From: James Smart jsmart2021@gmail.com
[ Upstream commit ffc566411aded3c12c63e1310fb23830e9608c59 ]
The RSCN_MEMENTO logic was to workaround a target that does not register both FCP and NVMe FC4 types at the same time. This caused the configuration to not produce a second RSCN for the NVMe FC4 type registration in a timely manner. The intention of the RSCN_MEMENTO flag was to always signal to try NVMe PRLI.
However, there are other FCP-only target arrays in correctly behaved configurations that reject the NVMe PRLI followed by a LOGO leading to never rediscovering the target after an issue_lip (as LOGO causes a repeat of PLOGI/PRLIs).
Revert the RSCN_MEMENTO patch as it is causing correctly behaved configs to fail while it exists only to succeed on a misbehaved config.
Link: https://lore.kernel.org/r/20220701211425.2708-9-jsmart2021@gmail.com Fixes: 1045592fc968 ("scsi: lpfc: Introduce FC_RSCN_MEMENTO flag for tracking post RSCN completion") 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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/lpfc/lpfc.h | 1 - drivers/scsi/lpfc/lpfc_els.c | 8 ++------ drivers/scsi/lpfc/lpfc_hbadisc.c | 3 +-- 3 files changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index da9070cdad91..212f9b962187 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -604,7 +604,6 @@ struct lpfc_vport { #define FC_VFI_REGISTERED 0x800000 /* VFI is registered */ #define FC_FDISC_COMPLETED 0x1000000/* FDISC completed */ #define FC_DISC_DELAYED 0x2000000/* Delay NPort discovery */ -#define FC_RSCN_MEMENTO 0x4000000/* RSCN cmd processed */
uint32_t ct_flags; #define FC_CT_RFF_ID 0x1 /* RFF_ID accepted by switch */ diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 3fababb7c181..c904e9486b92 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -1886,7 +1886,6 @@ lpfc_end_rscn(struct lpfc_vport *vport) else { spin_lock_irq(shost->host_lock); vport->fc_flag &= ~FC_RSCN_MODE; - vport->fc_flag |= FC_RSCN_MEMENTO; spin_unlock_irq(shost->host_lock); } } @@ -2434,14 +2433,13 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, u32 local_nlp_type, elscmd;
/* - * If discovery was kicked off from RSCN mode, - * the FC4 types supported from a + * If we are in RSCN mode, the FC4 types supported from a * previous GFT_ID command may not be accurate. So, if we * are a NVME Initiator, always look for the possibility of * the remote NPort beng a NVME Target. */ if (phba->sli_rev == LPFC_SLI_REV4 && - vport->fc_flag & (FC_RSCN_MODE | FC_RSCN_MEMENTO) && + vport->fc_flag & FC_RSCN_MODE && vport->nvmei_support) ndlp->nlp_fc4_type |= NLP_FC4_NVME; local_nlp_type = ndlp->nlp_fc4_type; @@ -7915,7 +7913,6 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb, if ((rscn_cnt < FC_MAX_HOLD_RSCN) && !(vport->fc_flag & FC_RSCN_DISCOVERY)) { vport->fc_flag |= FC_RSCN_MODE; - vport->fc_flag &= ~FC_RSCN_MEMENTO; spin_unlock_irq(shost->host_lock); if (rscn_cnt) { cmd = vport->fc_rscn_id_list[rscn_cnt-1]->virt; @@ -7965,7 +7962,6 @@ lpfc_els_rcv_rscn(struct lpfc_vport *vport, struct lpfc_iocbq *cmdiocb,
spin_lock_irq(shost->host_lock); vport->fc_flag |= FC_RSCN_MODE; - vport->fc_flag &= ~FC_RSCN_MEMENTO; spin_unlock_irq(shost->host_lock); vport->fc_rscn_id_list[vport->fc_rscn_id_cnt++] = pcmd; /* Indicate we are done walking fc_rscn_id_list on this vport */ diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index fb36f26170e4..5cd838eac455 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -1354,8 +1354,7 @@ lpfc_linkup_port(struct lpfc_vport *vport)
spin_lock_irq(shost->host_lock); vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | - FC_RSCN_MEMENTO | FC_RSCN_MODE | - FC_NLP_MORE | FC_RSCN_DISCOVERY); + FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); vport->fc_flag |= FC_NDISC_ACTIVE; vport->fc_ns_retry = 0; spin_unlock_irq(shost->host_lock);