[PATCH AUTOSEL for 4.15 67/78] scsi: lpfc: Fix SCSI LUN discovery when SCSI and NVME enabled

2018-03-07 Thread Sasha Levin 
From: James Smart 

[ Upstream commit 9de416ac67b54d666327ba927a190f4b7259f4a0 ]

When enabled for both SCSI and NVME support, and connected pt2pt to a
SCSI only target, the driver nodelist entry for the remote port is left
in PRLI_ISSUE state and no SCSI LUNs are discovered. Works fine if only
configured for SCSI support.

Error was due to some of the prli points still reflecting the need to
send only 1 PRLI. On a lot of fabric configs, targets were NVME only,
which meant the fabric-reported protocol attributes were only telling
the driver one protocol or the other. Thus things worked fine. With
pt2pt, the driver must send a PRLI for both protocols as there are no
hints on what the target supports. Thus pt2pt targets were hitting the
multiple PRLI issues.

Complete the dual PRLI support. Track explicitly whether scsi (fcp) or
nvme prli's have been sent. Accurately track protocol support detected
on each node as reported by the fabric or probed by PRLI traffic.

Signed-off-by: Dick Kennedy 
Signed-off-by: James Smart 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Sasha Levin 
---
 drivers/scsi/lpfc/lpfc_ct.c|  1 +
 drivers/scsi/lpfc/lpfc_els.c   | 30 --
 drivers/scsi/lpfc/lpfc_nportdisc.c | 30 +-
 3 files changed, 34 insertions(+), 27 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index f77673ab4a84..3a8ec82e685a 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -471,6 +471,7 @@ lpfc_prep_node_fc4type(struct lpfc_vport *vport, uint32_t 
Did, uint8_t fc4_type)
"Parse GID_FTrsp: did:x%x flg:x%x x%x",
Did, ndlp->nlp_flag, vport->fc_flag);
 
+   ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
/* By default, the driver expects to support FCP FC4 */
if (fc4_type == FC_TYPE_FCP)
ndlp->nlp_fc4_type |= NLP_FC4_FCP;
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 39d5b146202e..537ee0c44198 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -2088,6 +2088,10 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdiocb,
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_PRLI_SND;
+
+   /* Driver supports multiple FC4 types.  Counters matter. */
+   vport->fc_prli_sent--;
+   ndlp->fc4_prli_sent--;
spin_unlock_irq(shost->host_lock);
 
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
@@ -2095,9 +2099,6 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdiocb,
irsp->ulpStatus, irsp->un.ulpWord[4],
ndlp->nlp_DID);
 
-   /* Ddriver supports multiple FC4 types.  Counters matter. */
-   vport->fc_prli_sent--;
-
/* PRLI completes to NPort  */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 "0103 PRLI completes to NPort x%06x "
@@ -2111,7 +2112,6 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdiocb,
 
if (irsp->ulpStatus) {
/* Check for retry */
-   ndlp->fc4_prli_sent--;
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
goto out;
@@ -2190,6 +2190,15 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct 
lpfc_nodelist *ndlp,
ndlp->nlp_fc4_type |= NLP_FC4_NVME;
local_nlp_type = ndlp->nlp_fc4_type;
 
+   /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
+* fields here before any of them can complete.
+*/
+   ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
+   ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
+   ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+   ndlp->nlp_flag &= ~NLP_FIRSTBURST;
+   ndlp->nvme_fb_size = 0;
+
  send_next_prli:
if (local_nlp_type & NLP_FC4_FCP) {
/* Payload is 4 + 16 = 20 x14 bytes. */
@@ -2298,6 +2307,13 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct 
lpfc_nodelist *ndlp,
elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_PRLI_SND;
+
+   /* The vport counters are used for lpfc_scan_finished, but
+* the ndlp is used to track outstanding PRLIs for different
+* FC4 types.
+*/
+   vport->fc_prli_sent++;
+   ndlp->fc4_prli_sent++;
spin_unlock_irq(shost->host_lock);
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
@@ -2308,12

[PATCH AUTOSEL for 4.15 67/78] scsi: lpfc: Fix SCSI LUN discovery when SCSI and NVME enabled

2018-03-07 Thread Sasha Levin 
From: James Smart 

[ Upstream commit 9de416ac67b54d666327ba927a190f4b7259f4a0 ]

When enabled for both SCSI and NVME support, and connected pt2pt to a
SCSI only target, the driver nodelist entry for the remote port is left
in PRLI_ISSUE state and no SCSI LUNs are discovered. Works fine if only
configured for SCSI support.

Error was due to some of the prli points still reflecting the need to
send only 1 PRLI. On a lot of fabric configs, targets were NVME only,
which meant the fabric-reported protocol attributes were only telling
the driver one protocol or the other. Thus things worked fine. With
pt2pt, the driver must send a PRLI for both protocols as there are no
hints on what the target supports. Thus pt2pt targets were hitting the
multiple PRLI issues.

Complete the dual PRLI support. Track explicitly whether scsi (fcp) or
nvme prli's have been sent. Accurately track protocol support detected
on each node as reported by the fabric or probed by PRLI traffic.

Signed-off-by: Dick Kennedy 
Signed-off-by: James Smart 
Reviewed-by: Hannes Reinecke 
Signed-off-by: Martin K. Petersen 
Signed-off-by: Sasha Levin 
---
 drivers/scsi/lpfc/lpfc_ct.c|  1 +
 drivers/scsi/lpfc/lpfc_els.c   | 30 --
 drivers/scsi/lpfc/lpfc_nportdisc.c | 30 +-
 3 files changed, 34 insertions(+), 27 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_ct.c b/drivers/scsi/lpfc/lpfc_ct.c
index f77673ab4a84..3a8ec82e685a 100644
--- a/drivers/scsi/lpfc/lpfc_ct.c
+++ b/drivers/scsi/lpfc/lpfc_ct.c
@@ -471,6 +471,7 @@ lpfc_prep_node_fc4type(struct lpfc_vport *vport, uint32_t 
Did, uint8_t fc4_type)
"Parse GID_FTrsp: did:x%x flg:x%x x%x",
Did, ndlp->nlp_flag, vport->fc_flag);
 
+   ndlp->nlp_fc4_type &= ~(NLP_FC4_FCP | NLP_FC4_NVME);
/* By default, the driver expects to support FCP FC4 */
if (fc4_type == FC_TYPE_FCP)
ndlp->nlp_fc4_type |= NLP_FC4_FCP;
diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c
index 39d5b146202e..537ee0c44198 100644
--- a/drivers/scsi/lpfc/lpfc_els.c
+++ b/drivers/scsi/lpfc/lpfc_els.c
@@ -2088,6 +2088,10 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdiocb,
ndlp = (struct lpfc_nodelist *) cmdiocb->context1;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_PRLI_SND;
+
+   /* Driver supports multiple FC4 types.  Counters matter. */
+   vport->fc_prli_sent--;
+   ndlp->fc4_prli_sent--;
spin_unlock_irq(shost->host_lock);
 
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD,
@@ -2095,9 +2099,6 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdiocb,
irsp->ulpStatus, irsp->un.ulpWord[4],
ndlp->nlp_DID);
 
-   /* Ddriver supports multiple FC4 types.  Counters matter. */
-   vport->fc_prli_sent--;
-
/* PRLI completes to NPort  */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
 "0103 PRLI completes to NPort x%06x "
@@ -2111,7 +2112,6 @@ lpfc_cmpl_els_prli(struct lpfc_hba *phba, struct 
lpfc_iocbq *cmdiocb,
 
if (irsp->ulpStatus) {
/* Check for retry */
-   ndlp->fc4_prli_sent--;
if (lpfc_els_retry(phba, cmdiocb, rspiocb)) {
/* ELS command is being retried */
goto out;
@@ -2190,6 +2190,15 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct 
lpfc_nodelist *ndlp,
ndlp->nlp_fc4_type |= NLP_FC4_NVME;
local_nlp_type = ndlp->nlp_fc4_type;
 
+   /* This routine will issue 1 or 2 PRLIs, so zero all the ndlp
+* fields here before any of them can complete.
+*/
+   ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
+   ndlp->nlp_type &= ~(NLP_NVME_TARGET | NLP_NVME_INITIATOR);
+   ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
+   ndlp->nlp_flag &= ~NLP_FIRSTBURST;
+   ndlp->nvme_fb_size = 0;
+
  send_next_prli:
if (local_nlp_type & NLP_FC4_FCP) {
/* Payload is 4 + 16 = 20 x14 bytes. */
@@ -2298,6 +2307,13 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct 
lpfc_nodelist *ndlp,
elsiocb->iocb_cmpl = lpfc_cmpl_els_prli;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_PRLI_SND;
+
+   /* The vport counters are used for lpfc_scan_finished, but
+* the ndlp is used to track outstanding PRLIs for different
+* FC4 types.
+*/
+   vport->fc_prli_sent++;
+   ndlp->fc4_prli_sent++;
spin_unlock_irq(shost->host_lock);
if (lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, elsiocb, 0) ==
IOCB_ERROR) {
@@ -2308,12 +2324,6 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct 
lpfc_nodelist *ndlp,
return 1;
}
 
-   /* The vport counters