From patchwork Thu Apr 27 08:03:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 13225240 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 CAFDBC77B61 for ; Thu, 27 Apr 2023 08:04:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243228AbjD0IEJ (ORCPT ); Thu, 27 Apr 2023 04:04:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243216AbjD0IEG (ORCPT ); Thu, 27 Apr 2023 04:04:06 -0400 Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 947E02D65 for ; Thu, 27 Apr 2023 01:04:05 -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 33R7CHrC006786 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=jc+EhZqol86mfjm9cB5uoMKxsIdMmjGw44ecfInONWs=; b=gUvDKtjTa3fS2hrSTPq/gGknvPMt4L/l0jM9ibm85GGygg1+nLnz5OF/qj4GAsDfPusS PfqMY6s8pwrZ47Q6MUgWA7oJqIN61ECfdOObyUExJaXBV+55mHlntWbPmaRXV6gTgKqd ri5eQkGF2nItKKQ6NKr88/Bi4CntGPbqrp6f/GaDG3p3QpBfHMoI6N87unus1a9B9sey /+b6vALsDIma0mESO1OTJnNtsRK3TULyckV2x0EshFa2045loZKlaiMo4dhdiKpV7LiC z0cz/oeeC3kFP9XxWSWXSvASxfuRS2CN447UjwgP/cSc/tbiKUtvPj0wLdib+snS7RTO jQ== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3q7apa2khg-5 (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 01:04:02 -0700 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id ED8983F7088; Thu, 27 Apr 2023 01:04:02 -0700 (PDT) From: Nilesh Javali To: CC: , , , , Subject: [PATCH 3/7] qla2xxx: Fix task management cmd fail due to unavailable resource Date: Thu, 27 Apr 2023 01:03:47 -0700 Message-ID: <20230427080351.9889-4-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: vkRabsZBwEG1tqwRO0yhS_oQGzrqmh6D X-Proofpoint-GUID: vkRabsZBwEG1tqwRO0yhS_oQGzrqmh6D 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 failed with status 2Ch which is a result of too many task management commands sent to the same target. Hence limit task management commands to 8 per target. Cc: stable@vger.kernel.org Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali --- drivers/scsi/qla2xxx/qla_def.h | 3 ++ drivers/scsi/qla2xxx/qla_init.c | 63 ++++++++++++++++++++++++++++++--- 2 files changed, 61 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 0437e0150a50..0971150953a9 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -2543,6 +2543,7 @@ enum rscn_addr_format { typedef struct fc_port { struct list_head list; struct scsi_qla_host *vha; + struct list_head tmf_pending; unsigned int conf_compl_supported:1; unsigned int deleted:2; @@ -2563,6 +2564,8 @@ typedef struct fc_port { unsigned int do_prli_nvme:1; uint8_t nvme_flag; + uint8_t active_tmf; +#define MAX_ACTIVE_TMF 8 uint8_t node_name[WWN_SIZE]; uint8_t port_name[WWN_SIZE]; diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 45a941409fef..9920a3b821b0 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2149,6 +2149,54 @@ __qla2x00_async_tm_cmd(struct tmf_arg *arg) return rval; } +void qla_put_tmf(fc_port_t *fcport) +{ + struct scsi_qla_host *vha = fcport->vha; + struct qla_hw_data *ha = vha->hw; + unsigned long flags; + + spin_lock_irqsave(&ha->tgt.sess_lock, flags); + fcport->active_tmf--; + spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); +} + +static +int qla_get_tmf(fc_port_t *fcport) +{ + struct scsi_qla_host *vha = fcport->vha; + struct qla_hw_data *ha = vha->hw; + unsigned long flags; + int rc = 0; + LIST_HEAD(tmf_elem); + + spin_lock_irqsave(&ha->tgt.sess_lock, flags); + list_add_tail(&tmf_elem, &fcport->tmf_pending); + + while (fcport->active_tmf >= MAX_ACTIVE_TMF) { + spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); + + msleep(1); + + spin_lock_irqsave(&ha->tgt.sess_lock, flags); + if (fcport->deleted) { + rc = EIO; + break; + } + if (fcport->active_tmf < MAX_ACTIVE_TMF && + list_is_first(&tmf_elem, &fcport->tmf_pending)) + break; + } + + list_del(&tmf_elem); + + if (!rc) + fcport->active_tmf++; + + spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); + + return rc; +} + int qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, uint32_t tag) @@ -2156,18 +2204,19 @@ 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; - struct completion comp; int i, rval; - init_completion(&comp); a.vha = fcport->vha; a.fcport = fcport; a.lun = lun; - - if (flags & (TCF_LUN_RESET|TCF_ABORT_TASK_SET| TCF_CLEAR_TASK_SET|TCF_CLEAR_ACA)) + if (flags & (TCF_LUN_RESET|TCF_ABORT_TASK_SET| TCF_CLEAR_TASK_SET|TCF_CLEAR_ACA)) { a.modifier = MK_SYNC_ID_LUN; - else + + if (qla_get_tmf(fcport)) + return QLA_FUNCTION_FAILED; + } else { a.modifier = MK_SYNC_ID; + } if (vha->hw->mqenable) { for (i = 0; i < vha->hw->num_qpairs; i++) { @@ -2186,6 +2235,9 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, a.flags = flags; rval = __qla2x00_async_tm_cmd(&a); + if (a.modifier == MK_SYNC_ID_LUN) + qla_put_tmf(fcport); + return rval; } @@ -5400,6 +5452,7 @@ qla2x00_alloc_fcport(scsi_qla_host_t *vha, gfp_t flags) INIT_WORK(&fcport->reg_work, qla_register_fcport_fn); INIT_LIST_HEAD(&fcport->gnl_entry); INIT_LIST_HEAD(&fcport->list); + INIT_LIST_HEAD(&fcport->tmf_pending); INIT_LIST_HEAD(&fcport->sess_cmd_list); spin_lock_init(&fcport->sess_cmd_lock);