From patchwork Fri Jul 1 21:14:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: James Smart X-Patchwork-Id: 586481 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 040F5CCA479 for ; Fri, 1 Jul 2022 21:15:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231558AbiGAVPO (ORCPT ); Fri, 1 Jul 2022 17:15:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40892 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231391AbiGAVPL (ORCPT ); Fri, 1 Jul 2022 17:15:11 -0400 Received: from mail-qk1-x72f.google.com (mail-qk1-x72f.google.com [IPv6:2607:f8b0:4864:20::72f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E3D843AE0 for ; Fri, 1 Jul 2022 14:15:10 -0700 (PDT) Received: by mail-qk1-x72f.google.com with SMTP id b125so2697849qkg.11 for ; Fri, 01 Jul 2022 14:15:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bTctusDPUQ6dpOmwSeJoxHf3oZihoAR5MMEfys9sFmk=; b=e/A6YFHWmw5m6BVUOQO1V2bdm+yO1sZjM3zel4fek7sQycYe5/Kg4CCvVan4L2aV8M FAhKSNwKkk106sdKnTFqxhhbtSshqnLofjDL0AUJH7uJG9cLmC3M63f9v/EywAMDtJY3 VvGVB27lAv9ElDo/1pr71YhgcFix7aOuVgHF/TNuYpW5PFeKFSljhc6DQTCVVrqE7Rv9 jaQGRABK5xx096Qb3roLLOtvJZXM0wRAMNCQc7E76vwdB0tpEwXTc81eGhIJCGPTajXR hXz3CPKtymKYrLR+TRL7d7+B1b8NxkZQpVyKYyDrZzXNvCnfvUDgYUDv7rnqoXz3kWEf xCZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bTctusDPUQ6dpOmwSeJoxHf3oZihoAR5MMEfys9sFmk=; b=JQuD9quregOjfK13YCNPUltdXOmYZOyhvhUG2Cw+1ffVeetjH6Bm2yMg8Kxe1gzXwm glITUk2s/C1aiNGlXQMoRcM/vOw1V1aejYZoafK/U7n5gw1LVFHV9pDG5jkJbuPLvfvi F4Pz8WQJwbdh1/SsiXeR8f/cbkVLqHpPUsjLPvapAceFNeIShvUjbz1+hMo6XGrHPHiP W+BW5jYLVbMWZq6a9SIA3Og7U9QAIGElFpOlffdrlMkS/ukEaITK/9rcwo3OE9Eyv3lY h8mAYeEPwX1UqBawVDsaOXTgP8pZnfMFeqYuXOj6L3Cuy40fO4l4nmd8NIYVQXC8b6Mu nSCw== X-Gm-Message-State: AJIora88G5/3yVlKSKKxEGtPaja1kG4dsG4btMDhhQL7sKxP68VYA5Cx mVDwP0TuyS0I0sKlU4eEgficDicNl9o= X-Google-Smtp-Source: AGRyM1vrMTjNJSHVNe+5TmdXC5Eadp/N8R/giYYC6R9Nf6ULpj9ECEEDsDlBozYy3tRxzs6x+2645Q== X-Received: by 2002:a05:620a:10a1:b0:6ae:fecd:758f with SMTP id h1-20020a05620a10a100b006aefecd758fmr12314838qkk.412.1656710109819; Fri, 01 Jul 2022 14:15:09 -0700 (PDT) Received: from mail-lvn-it-01.broadcom.com ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id g6-20020ac842c6000000b00317ccc66971sm14584509qtm.52.2022.07.01.14.15.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Jul 2022 14:15:08 -0700 (PDT) From: James Smart To: linux-scsi@vger.kernel.org Cc: James Smart , Justin Tee Subject: [PATCH 08/12] lpfc: Revert RSCN_MEMENTO workaround for misbehaved configuration Date: Fri, 1 Jul 2022 14:14:21 -0700 Message-Id: <20220701211425.2708-9-jsmart2021@gmail.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20220701211425.2708-1-jsmart2021@gmail.com> References: <20220701211425.2708-1-jsmart2021@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org 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. Fixes: 1045592fc968 ("scsi: lpfc: Introduce FC_RSCN_MEMENTO flag for tracking post RSCN completion") Co-developed-by: Justin Tee Signed-off-by: Justin Tee Signed-off-by: James Smart --- 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 31fb2ee07bfa..9371829e11b2 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -1887,7 +1887,6 @@ 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); } } @@ -2435,14 +2434,13 @@ 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; @@ -7916,7 +7914,6 @@ 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; @@ -7966,7 +7963,6 @@ 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);