From patchwork Thu Mar 10 09:25:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 12776065 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 8E769C4332F for ; Thu, 10 Mar 2022 09:26:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240816AbiCJJ1e (ORCPT ); Thu, 10 Mar 2022 04:27:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240800AbiCJJ11 (ORCPT ); Thu, 10 Mar 2022 04:27:27 -0500 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94D7D139CE9 for ; Thu, 10 Mar 2022 01:26:26 -0800 (PST) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 22A1dmHQ025048 for ; Thu, 10 Mar 2022 01:26:25 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=pfpt0220; bh=9yDHClaXazJDFKOkKT3zdekb+BBdQgrfjOcEsQBvQNs=; b=NVjo8jZlmcm4VpD7qno6NcfHJ+JQT7GOwAgUMzqnd5us3oYaJGhk6+GN33vLP5Nq0LgY 6TCgims7NT1b9sprqdEQk2L1fq6J0gHDe5FKAmpPafY2Nyh9ap0iuZgFu1u21BZmch4X v18FNP1QQDseUNoaaa2Js4WDyhIklL0fY2SN1as2iRMpqBAMEKf9xmBJjDSrxhcByyoH m7W13z+6uDMD3Y2TpeWeHChN2JEEiLhIAIezJlnSU7UPd2QNMDHXweB0ZTwraMkWsszR 55FPfsiXQJ5nlhvOqcrqOGgSg1o+az1bPuHZF4sMBu3EIIy9FUAgIqMGYJFNDiy1jyKL oQ== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3ep38pmd7w-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 10 Mar 2022 01:26:25 -0800 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 10 Mar 2022 01:26:23 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Thu, 10 Mar 2022 01:26:23 -0800 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 68ED63F7061; Thu, 10 Mar 2022 01:26:23 -0800 (PST) Received: from dut1171.mv.qlogic.com (localhost [127.0.0.1]) by dut1171.mv.qlogic.com (8.14.7/8.14.7) with ESMTP id 22A9QN8b023013; Thu, 10 Mar 2022 01:26:23 -0800 Received: (from root@localhost) by dut1171.mv.qlogic.com (8.14.7/8.14.7/Submit) id 22A9QNWY023012; Thu, 10 Mar 2022 01:26:23 -0800 From: Nilesh Javali To: CC: , Subject: [PATCH v2 07/13] qla2xxx: Fix hang due to session stuck Date: Thu, 10 Mar 2022 01:25:58 -0800 Message-ID: <20220310092604.22950-8-njavali@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20220310092604.22950-1-njavali@marvell.com> References: <20220310092604.22950-1-njavali@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: mhAsJAV0EqTwFJVtGDZDNpE81_sGT3m0 X-Proofpoint-ORIG-GUID: mhAsJAV0EqTwFJVtGDZDNpE81_sGT3m0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.64.514 definitions=2022-03-10_03,2022-03-09_01,2022-02-23_01 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Quinn Tran User experience device lost. The log shows Get port data base command was queued up, failed, and requeued again. Every time it is requeued, it set the FCF_ASYNC_ACTIVE. This prevents any recovery code from occurring because driver thinks a recovery is in progress for this session. In essence, this session is hung. The reason it gets into this place is the session deletion got in front of this call due to link perturbation. Break the requeue cycle and exit. The session deletion code will trigger a session relogin. Cc: stable@vger.kernel.org Fixes: 726b85487067 ("qla2xxx: Add framework for async fabric discovery") Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali Reviewed-by: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_def.h | 4 ++++ drivers/scsi/qla2xxx/qla_init.c | 19 +++++++++++++++++-- 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 47d7fa1c7ae8..25b884701267 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -5437,4 +5437,8 @@ struct ql_vnd_tgt_stats_resp { #include "qla_gbl.h" #include "qla_dbg.h" #include "qla_inline.h" + +#define IS_SESSION_DELETED(_fcport) (_fcport->disc_state == DSC_DELETE_PEND || \ + _fcport->disc_state == DSC_DELETED) + #endif diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 6ffe44b805b6..3f05e87ac2d6 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -575,6 +575,14 @@ qla2x00_async_adisc(struct scsi_qla_host *vha, fc_port_t *fcport, struct srb_iocb *lio; int rval = QLA_FUNCTION_FAILED; + if (IS_SESSION_DELETED(fcport)) { + ql_log(ql_log_warn, vha, 0xffff, + "%s: %8phC is being delete - not sending command.\n", + __func__, fcport->port_name); + fcport->flags &= ~FCF_ASYNC_ACTIVE; + return rval; + } + if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT)) return rval; @@ -1338,8 +1346,15 @@ int qla24xx_async_gpdb(struct scsi_qla_host *vha, fc_port_t *fcport, u8 opt) struct port_database_24xx *pd; struct qla_hw_data *ha = vha->hw; - if (!vha->flags.online || (fcport->flags & FCF_ASYNC_SENT) || - fcport->loop_id == FC_NO_LOOP_ID) { + if (IS_SESSION_DELETED(fcport)) { + ql_log(ql_log_warn, vha, 0xffff, + "%s: %8phC is being delete - not sending command.\n", + __func__, fcport->port_name); + fcport->flags &= ~FCF_ASYNC_ACTIVE; + return rval; + } + + if (!vha->flags.online || fcport->flags & FCF_ASYNC_SENT) { ql_log(ql_log_warn, vha, 0xffff, "%s: %8phC online %d flags %x - not sending command.\n", __func__, fcport->port_name, vha->flags.online, fcport->flags);