From patchwork Thu Apr 27 08:03:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 13225241 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 6FC71C77B73 for ; Thu, 27 Apr 2023 08:04:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243235AbjD0IEL (ORCPT ); Thu, 27 Apr 2023 04:04:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34210 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243220AbjD0IEH (ORCPT ); Thu, 27 Apr 2023 04:04:07 -0400 Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07B3F2D69 for ; Thu, 27 Apr 2023 01:04:06 -0700 (PDT) Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33R7CHrD006786 for ; Thu, 27 Apr 2023 01:04:05 -0700 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=e+Y2ocT4dwDngs5eczMMHYfSOaEM2pYjqd2e0OdthtM=; b=JDQXUXKkVF28oDKlba+hMnW5B/xvzWFTl741HZ6orysqwlNTPSioUh63nWQXQLaYjBUb MioNdF10N4uXKblvjdB5oyeQ0Ad1T3PTgQixlDLeTAszYFu+8OGdIyBr41Em9o6kQeDC n9rWoSe/7/Rqyn385oyM1AkTEa8F1v+Y3zrZUE0eE8GfvfMTrXeMk9HRcVQAYyDkzo8i x5mxZWNAjWmWmHIchcTk2qBN3IMU30BgKmRTwNxt+Xp6I/BI20Uns2wxrAc1g3/ZFHKy jVHqmdLGsbSDsBTLyzlNQDQpaMJzGG9Bu63gWRAyf2k/0X8F9OfTV2CWHyiz6AIK/Sct oQ== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3q7apa2khg-6 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 27 Apr 2023 01:04:05 -0700 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Thu, 27 Apr 2023 01:04:03 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Thu, 27 Apr 2023 01:04:03 -0700 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 0BE213F7086; Thu, 27 Apr 2023 01:04:03 -0700 (PDT) From: Nilesh Javali To: CC: , , , , Subject: [PATCH 4/7] qla2xxx: Fix hang in task management Date: Thu, 27 Apr 2023 01:03:48 -0700 Message-ID: <20230427080351.9889-5-njavali@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20230427080351.9889-1-njavali@marvell.com> References: <20230427080351.9889-1-njavali@marvell.com> MIME-Version: 1.0 X-Proofpoint-ORIG-GUID: 4XoV8E99rrV18wqIus9lQNhQ4PL9nH1X X-Proofpoint-GUID: 4XoV8E99rrV18wqIus9lQNhQ4PL9nH1X X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-27_05,2023-04-26_03,2023-02-09_01 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Quinn Tran Task management command hangs where a side band chip reset failed to nudge the TMF from it's current send path. Add additional error check to block TMF from entering during chip reset and along the TMF path to cause it to bail out, skip over abort of marker. Cc: stable@vger.kernel.org Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali --- drivers/scsi/qla2xxx/qla_def.h | 4 +++ drivers/scsi/qla2xxx/qla_init.c | 60 +++++++++++++++++++++++++++++++-- 2 files changed, 61 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 0971150953a9..3e0be0136cad 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -5516,4 +5516,8 @@ struct ql_vnd_tgt_stats_resp { _fp->disc_state, _fp->scan_state, _fp->loop_id, _fp->deleted, \ _fp->flags +#define TMF_NOT_READY(_fcport) \ + (!_fcport || IS_SESSION_DELETED(_fcport) || atomic_read(&_fcport->state) != FCS_ONLINE || \ + !_fcport->vha->hw->flags.fw_started) + #endif diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 9920a3b821b0..426ca8985bd1 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1996,6 +1996,11 @@ qla2x00_tmf_iocb_timeout(void *data) int rc, h; unsigned long flags; + if (sp->type == SRB_MARKER) { + complete(&tmf->u.tmf.comp); + return; + } + rc = qla24xx_async_abort_cmd(sp, false); if (rc) { spin_lock_irqsave(sp->qpair->qp_lock_ptr, flags); @@ -2023,6 +2028,7 @@ static void qla_marker_sp_done(srb_t *sp, int res) sp->handle, sp->fcport->d_id.b24, sp->u.iocb_cmd.u.tmf.flags, sp->u.iocb_cmd.u.tmf.lun, sp->qpair->id); + sp->u.iocb_cmd.u.tmf.data = res; complete(&tmf->u.tmf.comp); } @@ -2039,6 +2045,11 @@ static void qla_marker_sp_done(srb_t *sp, int res) } while (cnt); \ } +/** + * qla26xx_marker: send marker IOCB and wait for the completion of it. + * @arg: pointer to argument list. + * It is assume caller will provide an fcport pointer and modifier + */ int qla26xx_marker(struct tmf_arg *arg) { @@ -2048,6 +2059,14 @@ qla26xx_marker(struct tmf_arg *arg) int rval = QLA_FUNCTION_FAILED; fc_port_t *fcport = arg->fcport; + if (TMF_NOT_READY(arg->fcport)) { + ql_dbg(ql_dbg_taskm, vha, 0x8039, + "FC port not ready for marker loop-id=%x portid=%06x modifier=%x lun=%lld qp=%d.\n", + fcport->loop_id, fcport->d_id.b24, + arg->modifier, arg->lun, arg->qpair->id); + return QLA_SUSPENDED; + } + /* ref: INIT */ sp = qla2xxx_get_qpair_sp(vha, arg->qpair, fcport, GFP_KERNEL); if (!sp) @@ -2074,11 +2093,19 @@ qla26xx_marker(struct tmf_arg *arg) if (rval != QLA_SUCCESS) { ql_log(ql_log_warn, vha, 0x8031, - "Marker IOCB failed (%x).\n", rval); + "Marker IOCB send failure (%x).\n", rval); goto done_free_sp; } wait_for_completion(&tm_iocb->u.tmf.comp); + rval = tm_iocb->u.tmf.data; + + if (rval != QLA_SUCCESS) { + ql_log(ql_log_warn, vha, 0x8019, + "Marker failed hdl=%x loop-id=%x portid=%06x modifier=%x lun=%lld qp=%d rval %d.\n", + sp->handle, fcport->loop_id, fcport->d_id.b24, + arg->modifier, arg->lun, sp->qpair->id, rval); + } done_free_sp: /* ref: INIT */ @@ -2091,6 +2118,8 @@ static void qla2x00_tmf_sp_done(srb_t *sp, int res) { struct srb_iocb *tmf = &sp->u.iocb_cmd; + if (res) + tmf->u.tmf.data = res; complete(&tmf->u.tmf.comp); } @@ -2104,6 +2133,14 @@ __qla2x00_async_tm_cmd(struct tmf_arg *arg) fc_port_t *fcport = arg->fcport; + if (TMF_NOT_READY(arg->fcport)) { + ql_dbg(ql_dbg_taskm, vha, 0x8032, + "FC port not ready for TM command loop-id=%x portid=%06x modifier=%x lun=%lld qp=%d.\n", + fcport->loop_id, fcport->d_id.b24, + arg->modifier, arg->lun, arg->qpair->id); + return QLA_SUSPENDED; + } + /* ref: INIT */ sp = qla2xxx_get_qpair_sp(vha, arg->qpair, fcport, GFP_KERNEL); if (!sp) @@ -2178,7 +2215,9 @@ int qla_get_tmf(fc_port_t *fcport) msleep(1); spin_lock_irqsave(&ha->tgt.sess_lock, flags); - if (fcport->deleted) { + if (TMF_NOT_READY(fcport)) { + ql_log(ql_log_warn, vha, 0x802c, + "Unable to acquire TM resource due to disruption.\n"); rc = EIO; break; } @@ -2204,7 +2243,10 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, struct scsi_qla_host *vha = fcport->vha; struct qla_qpair *qpair; struct tmf_arg a; - int i, rval; + int i, rval = QLA_SUCCESS; + + if (TMF_NOT_READY(fcport)) + return QLA_SUSPENDED; a.vha = fcport->vha; a.fcport = fcport; @@ -2223,6 +2265,14 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, qpair = vha->hw->queue_pair_map[i]; if (!qpair) continue; + + if (TMF_NOT_READY(fcport)) { + ql_log(ql_log_warn, vha, 0x8026, + "Unable to send TM due to disruption.\n"); + rval = QLA_SUSPENDED; + break; + } + a.qpair = qpair; a.flags = flags|TCF_NOTMCMD_TO_TARGET; rval = __qla2x00_async_tm_cmd(&a); @@ -2231,10 +2281,14 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, } } + if (rval) + goto bailout; + a.qpair = vha->hw->base_qpair; a.flags = flags; rval = __qla2x00_async_tm_cmd(&a); +bailout: if (a.modifier == MK_SYNC_ID_LUN) qla_put_tmf(fcport);