From 09559e81121f9663e8f1f6ed05672c49e31be3db Mon Sep 17 00:00:00 2001 From: James Smart Date: Thu, 15 Jun 2017 22:56:46 -0700 Subject: [PATCH] scsi: lpfc: Fix SLI3 drivers attempting NVME ELS commands. In a server with an 8G adapter and a 32G adapter, running NVME and FCP, the server would crash with the following stack. RIP: 0010: ... lpfc_nvme_register_port+0x38/0x420 [lpfc] lpfc_nlp_state_cleanup+0x154/0x4f0 [lpfc] lpfc_nlp_set_state+0x9d/0x1a0 [lpfc] lpfc_cmpl_prli_prli_issue+0x35f/0x440 [lpfc] lpfc_disc_state_machine+0x78/0x1c0 [lpfc] lpfc_cmpl_els_prli+0x17c/0x1f0 [lpfc] lpfc_sli_sp_handle_rspiocb+0x39b/0x6b0 [lpfc] lpfc_sli_handle_slow_ring_event_s3+0x134/0x2d0 [lpfc] lpfc_work_done+0x8ac/0x13b0 [lpfc] lpfc_do_work+0xf1/0x1b0 [lpfc] Crash, on the 8G adapter, is due to a vport which does not have a nvme local port structure. It's not supposed to have one. NVME is not supported on the 8G adapter, so the NVME PRLI, which started this flow shouldn't have been sent in the first place. Correct discovery engine to recognize when on an SLI3 rport, which doesn't support SLI3, if the rport supports only NVME, don't send a NVME PRLI. Instead, as no FC4 will be used, a LOGO is sent. If rport is FCP and NVME, only execute the SCSI PRLI. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_els.c | 16 +++++++++++++++- drivers/scsi/lpfc/lpfc_hbadisc.c | 3 ++- 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index a140318..54de984 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -2168,6 +2168,19 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, ndlp->nlp_fc4_type, ndlp->nlp_DID); return 1; } + + /* SLI3 ports don't support NVME. If this rport is a strict NVME + * FC4 type, implicitly LOGO. + */ + if (phba->sli_rev == LPFC_SLI_REV3 && + ndlp->nlp_fc4_type == NLP_FC4_NVME) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, + "3088 Rport fc4 type 0x%x not supported by SLI3 adapter\n", + ndlp->nlp_type); + lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); + return 1; + } + elsiocb = lpfc_prep_els_iocb(vport, 1, cmdsize, retry, ndlp, ndlp->nlp_DID, elscmd); if (!elsiocb) @@ -2268,7 +2281,8 @@ lpfc_issue_els_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, /* The driver supports 2 FC4 types. Make sure * a PRLI is issued for all types before exiting. */ - if (local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) + if (phba->sli_rev == LPFC_SLI_REV4 && + local_nlp_type & (NLP_FC4_FCP | NLP_FC4_NVME)) goto send_next_prli; return 0; diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index db2d0e6..aa5e5ff 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -4194,7 +4194,8 @@ lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, lpfc_register_remote_port(vport, ndlp); } /* Notify the NVME transport of this new rport. */ - if (ndlp->nlp_fc4_type & NLP_FC4_NVME) { + if (vport->phba->sli_rev >= LPFC_SLI_REV4 && + ndlp->nlp_fc4_type & NLP_FC4_NVME) { if (vport->phba->nvmet_support == 0) { /* Register this rport with the transport. * Initiators take the NDLP ref count in -- 2.7.4