From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B4D2C432C3 for ; Sat, 16 Nov 2019 15:53:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 74E1D218A3 for ; Sat, 16 Nov 2019 15:53:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919605; bh=6rMtuoMPk0La/9q0RunePPpfC/2Sl50DzEPPOEwmU+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=bbWwoPQEJqkaLY7oSZb0jXOHvVKR9qIlMyZjLetspAWYD4Fg3MLsBBeZRSkdBLNvB LdCXrg2EQKAzEDavsKq04ygP+LqwBVaeQpqI6ZhjZZy8ONAPzDtyEeCZK+88S0hrES ERt7G6pt6x7ca/U/QZAAtzepODH4hruteil1n4VY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730188AbfKPPxY (ORCPT ); Sat, 16 Nov 2019 10:53:24 -0500 Received: from mail.kernel.org ([198.145.29.99]:34352 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731198AbfKPPxU (ORCPT ); Sat, 16 Nov 2019 10:53:20 -0500 Received: from sasha-vm.mshome.net (unknown [50.234.116.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6FF8E21844; Sat, 16 Nov 2019 15:53:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919598; bh=6rMtuoMPk0La/9q0RunePPpfC/2Sl50DzEPPOEwmU+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oI26jQFRT21FBx6Ib3hhyiCRFQthG5qtlqK78HPuCGkpccsw6WMbnBGsvo8oC3L1G m2TigiSmFX45xUQjLiXtzVObIyBhgTZCq7eL4K9kEzxKDx2JHi9rZfqvzinfNB/aQ3 Ol7ByILVt6Ozl5qtbOyUGv6AfWhT+rfBd/pVt5Bs= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: James Smart , Dick Kennedy , Hannes Reinecke , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 86/99] scsi: lpfc: fcoe: Fix link down issue after 1000+ link bounces Date: Sat, 16 Nov 2019 10:50:49 -0500 Message-Id: <20191116155103.10971-86-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191116155103.10971-1-sashal@kernel.org> References: <20191116155103.10971-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: James Smart [ Upstream commit 036cad1f1ac9ce03e2db94b8460f98eaf1e1ee4c ] On FCoE adapters, when running link bounce test in a loop, initiator failed to login with switch switch and required driver reload to recover. Switch reached a point where all subsequent FLOGIs would be LS_RJT'd. Further testing showed the condition to be related to not performing FCF discovery between FLOGI's. Fix by monitoring FLOGI failures and once a repeated error is seen repeat FCF discovery. 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_els.c | 2 ++ drivers/scsi/lpfc/lpfc_hbadisc.c | 20 ++++++++++++++++++++ drivers/scsi/lpfc/lpfc_init.c | 2 +- drivers/scsi/lpfc/lpfc_sli.c | 11 ++--------- drivers/scsi/lpfc/lpfc_sli4.h | 1 + 5 files changed, 26 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index b5be4df05733f..3702497b5b169 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -1141,6 +1141,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, phba->fcf.fcf_flag &= ~FCF_DISCOVERY; phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); spin_unlock_irq(&phba->hbalock); + phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out; } if (!rc) { @@ -1155,6 +1156,7 @@ lpfc_cmpl_els_flogi(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, phba->fcf.fcf_flag &= ~FCF_DISCOVERY; phba->hba_flag &= ~(FCF_RR_INPROG | HBA_DEVLOSS_TMO); spin_unlock_irq(&phba->hbalock); + phba->fcf.fcf_redisc_attempted = 0; /* reset */ goto out; } } diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 9cca5ddbc50cc..6eaba16768461 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -1969,6 +1969,26 @@ int lpfc_sli4_fcf_rr_next_proc(struct lpfc_vport *vport, uint16_t fcf_index) "failover and change port state:x%x/x%x\n", phba->pport->port_state, LPFC_VPORT_UNKNOWN); phba->pport->port_state = LPFC_VPORT_UNKNOWN; + + if (!phba->fcf.fcf_redisc_attempted) { + lpfc_unregister_fcf(phba); + + rc = lpfc_sli4_redisc_fcf_table(phba); + if (!rc) { + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "3195 Rediscover FCF table\n"); + phba->fcf.fcf_redisc_attempted = 1; + lpfc_sli4_clear_fcf_rr_bmask(phba); + } else { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "3196 Rediscover FCF table " + "failed. Status:x%x\n", rc); + } + } else { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "3197 Already rediscover FCF table " + "attempted. No more retry\n"); + } goto stop_flogi_current_fcf; } else { lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_ELS, diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index e9ea8f4ea2c92..2f80b2c0409e0 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -4444,7 +4444,7 @@ lpfc_sli4_async_fip_evt(struct lpfc_hba *phba, break; } /* If fast FCF failover rescan event is pending, do nothing */ - if (phba->fcf.fcf_flag & FCF_REDISC_EVT) { + if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) { spin_unlock_irq(&phba->hbalock); break; } diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index c05fc61a383b2..e1e0feb250031 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -16553,15 +16553,8 @@ lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba) goto initial_priority; lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, "2844 No roundrobin failover FCF available\n"); - if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) - return LPFC_FCOE_FCF_NEXT_NONE; - else { - lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, - "3063 Only FCF available idx %d, flag %x\n", - next_fcf_index, - phba->fcf.fcf_pri[next_fcf_index].fcf_rec.flag); - return next_fcf_index; - } + + return LPFC_FCOE_FCF_NEXT_NONE; } if (next_fcf_index < LPFC_SLI4_FCF_TBL_INDX_MAX && diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 0b88b5703e0f1..9c69c4215de30 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -237,6 +237,7 @@ struct lpfc_fcf { #define FCF_REDISC_EVT 0x100 /* FCF rediscovery event to worker thread */ #define FCF_REDISC_FOV 0x200 /* Post FCF rediscovery fast failover */ #define FCF_REDISC_PROG (FCF_REDISC_PEND | FCF_REDISC_EVT) + uint16_t fcf_redisc_attempted; uint32_t addr_mode; uint32_t eligible_fcf_cnt; struct lpfc_fcf_rec current_rec; -- 2.20.1