From: Dick Kennedy <dick.kenn...@broadcom.com>
Modify driver return error codes to align with host nvme transport.
Driver isn't returning Exxx error codes to properly reflect out of
resource or connectivity conditions (-EBUSY), yet there were hard
error conditions returning -EBUSY.
Ensure the following situations return the proper return code:
temporary failures or temporary resource availability: -EBUSY
Connectivity issues: -ENODEV
all others are treated as hard errors and return an -Exxx value
that indicates the type of error.
Also, lpfc_sli4_issue_wqe() was modified to not translate error
from -Exxx to WQE state. This allows lpfc_nvme_fcp_io_submit()
routine to just return whatever -E value was returned from other
routines.
Signed-off-by: Dick Kennedy <dick.kenn...@broadcom.com>
Signed-off-by: James Smart <james.sm...@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumsh...@suse.de>
---
v3:
slight reword of patch description per review
---
drivers/scsi/lpfc/lpfc_nvme.c | 9 ++++-----
drivers/scsi/lpfc/lpfc_sli.c | 23 ++++++++++++++---------
2 files changed, 18 insertions(+), 14 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c
index ce8d6bbf8148..24dc69de6023 100644
--- a/drivers/scsi/lpfc/lpfc_nvme.c
+++ b/drivers/scsi/lpfc/lpfc_nvme.c
@@ -364,7 +364,7 @@ lpfc_nvme_gen_req(struct lpfc_vport *vport, struct
lpfc_dmabuf *bmp,
genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID);
rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe);
- if (rc == WQE_ERROR) {
+ if (rc) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"6045 Issue GEN REQ WQE to NPORT x%x "
"Data: x%x x%x\n",
@@ -1270,7 +1270,7 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port
*pnvme_lport,
* not exceed the programmed depth.
*/
if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) {
- ret = -EAGAIN;
+ ret = -EBUSY;
goto out_fail;
}
@@ -1279,7 +1279,7 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port
*pnvme_lport,
lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR,
"6065 driver's buffer pool is empty, "
"IO failed\n");
- ret = -ENOMEM;
+ ret = -EBUSY;
goto out_fail;
}
#ifdef CONFIG_SCSI_LPFC_DEBUG_FS
@@ -1332,7 +1332,6 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port
*pnvme_lport,
"sid: x%x did: x%x oxid: x%x\n",
ret, vport->fc_myDID, ndlp->nlp_DID,
lpfc_ncmd->cur_iocbq.sli4_xritag);
- ret = -EBUSY;
goto out_free_nvme_buf;
}
@@ -1576,7 +1575,7 @@ lpfc_nvme_fcp_abort(struct nvme_fc_local_port
*pnvme_lport,
abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl;
ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf);
spin_unlock_irqrestore(&phba->hbalock, flags);
- if (ret_val == IOCB_ERROR) {
+ if (ret_val) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS,
"6137 Failed abts issue_wqe with status x%x "
"for nvme_fcreq %p.\n",
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 0a8c9b59365a..6569fffb8b71 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -106,7 +106,7 @@ lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
* -ENOMEM.
* The caller is expected to hold the hbalock when calling this routine.
**/
-static uint32_t
+static int
lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
{
union lpfc_wqe *temp_wqe;
@@ -123,7 +123,7 @@ lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
idx = ((q->host_index + 1) % q->entry_count);
if (idx == q->hba_index) {
q->WQ_overflow++;
- return -ENOMEM;
+ return -EBUSY;
}
q->WQ_posted++;
/* set consumption flag every once in a while */
@@ -10741,7 +10741,7 @@ lpfc_sli4_abort_nvme_io(struct lpfc_hba *phba, struct
lpfc_sli_ring *pring,
abtsiocbp->vport = vport;
abtsiocbp->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl;
retval = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abtsiocbp);
- if (retval == IOCB_ERROR) {
+ if (retval) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME,
"6147 Failed abts issue_wqe with status x%x "
"for oxid x%x\n",
@@ -18888,6 +18888,7 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t
ring_number,
struct lpfc_sglq *sglq;
struct lpfc_sli_ring *pring;
unsigned long iflags;
+ uint32_t ret = 0;
/* NVME_LS and NVME_LS ABTS requests. */
if (pwqe->iocb_flag & LPFC_IO_NVME_LS) {
@@ -18906,10 +18907,12 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t
ring_number,
}
bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com,
pwqe->sli4_xritag);
- if (lpfc_sli4_wq_put(phba->sli4_hba.nvmels_wq, wqe)) {
+ ret = lpfc_sli4_wq_put(phba->sli4_hba.nvmels_wq, wqe);
+ if (ret) {
spin_unlock_irqrestore(&pring->ring_lock, iflags);
- return WQE_ERROR;
+ return ret;
}
+
lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
spin_unlock_irqrestore(&pring->ring_lock, iflags);
return 0;
@@ -18924,9 +18927,10 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t
ring_number,
wq = phba->sli4_hba.nvme_wq[pwqe->hba_wqidx];
bf_set(wqe_cqid, &wqe->generic.wqe_com,
phba->sli4_hba.nvme_cq[pwqe->hba_wqidx]->queue_id);
- if (lpfc_sli4_wq_put(wq, wqe)) {
+ ret = lpfc_sli4_wq_put(wq, wqe);
+ if (ret) {
spin_unlock_irqrestore(&pring->ring_lock, iflags);
- return WQE_ERROR;
+ return ret;
}
lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
spin_unlock_irqrestore(&pring->ring_lock, iflags);
@@ -18950,9 +18954,10 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t
ring_number,
wq = phba->sli4_hba.nvme_wq[pwqe->hba_wqidx];
bf_set(wqe_cqid, &wqe->generic.wqe_com,
phba->sli4_hba.nvme_cq[pwqe->hba_wqidx]->queue_id);
- if (lpfc_sli4_wq_put(wq, wqe)) {
+ ret = lpfc_sli4_wq_put(wq, wqe);
+ if (ret) {
spin_unlock_irqrestore(&pring->ring_lock, iflags);
- return WQE_ERROR;
+ return ret;
}
lpfc_sli_ringtxcmpl_put(phba, pring, pwqe);
spin_unlock_irqrestore(&pring->ring_lock, iflags);
--
2.13.1
