From patchwork Tue Mar 8 08:20:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 12773267 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 721BEC433EF for ; Tue, 8 Mar 2022 08:21:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344984AbiCHIWZ (ORCPT ); Tue, 8 Mar 2022 03:22:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46082 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344963AbiCHIWI (ORCPT ); Tue, 8 Mar 2022 03:22:08 -0500 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A70093F336 for ; Tue, 8 Mar 2022 00:21:10 -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 22881NID019263 for ; Tue, 8 Mar 2022 00:21:10 -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=TqUDQMyqkT6jEv2rF4y5UEMCjb3/kGaUhhXCyyFspC0=; b=kiWwYeuuSTjYTHFXP6m97Midh5yOa2LeXAMKJ/rHvJ9ZKM7EtWXhkyUpdekMYDvrYLD+ AJ87yC7vpWiNd5pGeg4ilkacgcVcJVwKGLcNJCExii0xRIaaM88p3KufXp4Ta0na+ojv Yul7iW0KUtbIm4dnO0QpGAoO0MV5lfjGe/2bu/67pl1UvwoeJSA2+GYaFkcERSMMA/KF 5McZ7m8AtKIRj+sQ4BUHQPiCdW+lSQ1L9TJUkZ+RwCJa9kSOOzh69Nyuxhe1I8RvBLKs 0XluNakJHXGnvH1H3xrtOMEckz6/ulj8JNwAZ32DRi+tuu2kgF8Wt+UuvR0A1xaaQqp1 FQ== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3ep38p838b-6 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Tue, 08 Mar 2022 00:21:09 -0800 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 8 Mar 2022 00:21:06 -0800 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 8 Mar 2022 00:21:06 -0800 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 178525B692E; Tue, 8 Mar 2022 00:21:06 -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 2288L50m009837; Tue, 8 Mar 2022 00:21:05 -0800 Received: (from root@localhost) by dut1171.mv.qlogic.com (8.14.7/8.14.7/Submit) id 2288L5mW009836; Tue, 8 Mar 2022 00:21:05 -0800 From: Nilesh Javali To: CC: , Subject: [PATCH 07/13] qla2xxx: Fix hang due to session stuck Date: Tue, 8 Mar 2022 00:20:42 -0800 Message-ID: <20220308082048.9774-8-njavali@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20220308082048.9774-1-njavali@marvell.com> References: <20220308082048.9774-1-njavali@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: yEbOd8jI35AXqzCvZzk_ifwqhLwqK7hA X-Proofpoint-ORIG-GUID: yEbOd8jI35AXqzCvZzk_ifwqhLwqK7hA 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=2022-03-08_03,2022-03-04_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 --- 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..b0579bce5b88 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 SESSION_DELETE(_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..3c58a2911937 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 (SESSION_DELETE(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 (SESSION_DELETE(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);