From patchwork Fri Jul 14 07:00:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 703521 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 EDCE2EB64DA for ; Fri, 14 Jul 2023 07:01:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235142AbjGNHBU (ORCPT ); Fri, 14 Jul 2023 03:01:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234301AbjGNHBS (ORCPT ); Fri, 14 Jul 2023 03:01:18 -0400 Received: from mx0b-0016f401.pphosted.com (mx0a-0016f401.pphosted.com [67.231.148.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27D902708 for ; Fri, 14 Jul 2023 00:01:17 -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 36DL45di017666 for ; Fri, 14 Jul 2023 00:01:17 -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-transfer-encoding : content-type; s=pfpt0220; bh=4OTbTDTohh19XRNfqYpXe72aPdwi1jaK5kTMaa+rqvA=; b=G2HUx13OB7Q8nXDLb5nAS2oMot6Zj5mqFsoqx9V6MiVHbrHq0a2yPHgVXOjw0YgxVmaL k5EWgVL4ywCsxqrTf3ocOoJXXVGoW0RpPJ9FzmmfdF4GLwDyGkz9nbl5+WSI5dauV5b8 8bn07hTO85AD6ql+evkylvxhXMQgHMzXxRMq3BQFGJAgOl2Ta8Zv0HMoMaw8rojj9IZc YFAujqRnBcm92NMzXu4iuwq8tw/hrckAnH0VPcOKgNY3XSlkUSC0jJURrskx4SxGkgL4 cc87YseNMgnCW22RHPyHFYQY9fo/G1VasyCyxciDHS78/ryDCsRfylqAWgj6l9DA6dLZ xQ== Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0a-0016f401.pphosted.com (PPS) with ESMTPS id 3rtrux9mgg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Fri, 14 Jul 2023 00:01:16 -0700 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 15.0.1497.48; Fri, 14 Jul 2023 00:01:14 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Fri, 14 Jul 2023 00:01:14 -0700 Received: from localhost.marvell.com (unknown [10.30.46.195]) by maili.marvell.com (Postfix) with ESMTP id 169E23F7067; Fri, 14 Jul 2023 00:01:12 -0700 (PDT) From: Nilesh Javali To: CC: , , , Subject: [PATCH v2 03/10] qla2xxx: Limit TMF to 8 per function Date: Fri, 14 Jul 2023 12:30:57 +0530 Message-ID: <20230714070104.40052-4-njavali@marvell.com> X-Mailer: git-send-email 2.23.1 In-Reply-To: <20230714070104.40052-1-njavali@marvell.com> References: <20230714070104.40052-1-njavali@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: cKopcILiSvK95VWILVqsU7cfZDxjDoCl X-Proofpoint-ORIG-GUID: cKopcILiSvK95VWILVqsU7cfZDxjDoCl X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-14_04,2023-07-13_01,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Quinn Tran Per FW recommendation, 8 TMF's can be outstanding for each function. Previously, it allowed 8 per target. Limit TMF to 8 per function. Cc: stable@vger.kernel.org Fixes: 6a87679626b5 ("scsi: qla2xxx: Fix task management cmd fail due to unavailable resource") Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali Reviewed-by: Himanshu Madhani --- drivers/scsi/qla2xxx/qla_def.h | 9 +++--- drivers/scsi/qla2xxx/qla_init.c | 55 ++++++++++++++++++++------------- drivers/scsi/qla2xxx/qla_os.c | 2 ++ 3 files changed, 41 insertions(+), 25 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 95a12b4e0484..03d94e024bdd 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -466,6 +466,7 @@ static inline be_id_t port_id_to_be_id(port_id_t port_id) } struct tmf_arg { + struct list_head tmf_elem; struct qla_qpair *qpair; struct fc_port *fcport; struct scsi_qla_host *vha; @@ -2541,7 +2542,6 @@ 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; @@ -2562,9 +2562,6 @@ 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]; port_id_t d_id; @@ -4656,6 +4653,8 @@ struct qla_hw_data { uint32_t flt_region_aux_img_status_sec; }; uint8_t active_image; + uint8_t active_tmf; +#define MAX_ACTIVE_TMF 8 /* Needed for BEACON */ uint16_t beacon_blink_led; @@ -4670,6 +4669,8 @@ struct qla_hw_data { struct qla_msix_entry *msix_entries; + struct list_head tmf_pending; + struct list_head tmf_active; struct list_head vp_list; /* list of VP */ unsigned long vp_idx_map[(MAX_MULTI_ID_FABRIC / 8) / sizeof(unsigned long)]; diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 60dd0e415351..5ec6f01ca635 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -2192,30 +2192,42 @@ __qla2x00_async_tm_cmd(struct tmf_arg *arg) return rval; } -static void qla_put_tmf(fc_port_t *fcport) +static void qla_put_tmf(struct tmf_arg *arg) { - struct scsi_qla_host *vha = fcport->vha; + struct scsi_qla_host *vha = arg->vha; struct qla_hw_data *ha = vha->hw; unsigned long flags; spin_lock_irqsave(&ha->tgt.sess_lock, flags); - fcport->active_tmf--; + ha->active_tmf--; + list_del(&arg->tmf_elem); spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); } static -int qla_get_tmf(fc_port_t *fcport) +int qla_get_tmf(struct tmf_arg *arg) { - struct scsi_qla_host *vha = fcport->vha; + struct scsi_qla_host *vha = arg->vha; struct qla_hw_data *ha = vha->hw; unsigned long flags; + fc_port_t *fcport = arg->fcport; int rc = 0; - LIST_HEAD(tmf_elem); + struct tmf_arg *t; spin_lock_irqsave(&ha->tgt.sess_lock, flags); - list_add_tail(&tmf_elem, &fcport->tmf_pending); + list_for_each_entry(t, &ha->tmf_active, tmf_elem) { + if (t->fcport == arg->fcport && t->lun == arg->lun) { + /* reject duplicate TMF */ + ql_log(ql_log_warn, vha, 0x802c, + "found duplicate TMF. Nexus=%ld:%06x:%llu.\n", + vha->host_no, fcport->d_id.b24, arg->lun); + spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); + return -EINVAL; + } + } - while (fcport->active_tmf >= MAX_ACTIVE_TMF) { + list_add_tail(&arg->tmf_elem, &ha->tmf_pending); + while (ha->active_tmf >= MAX_ACTIVE_TMF) { spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); msleep(1); @@ -2227,15 +2239,17 @@ int qla_get_tmf(fc_port_t *fcport) rc = EIO; break; } - if (fcport->active_tmf < MAX_ACTIVE_TMF && - list_is_first(&tmf_elem, &fcport->tmf_pending)) + if (ha->active_tmf < MAX_ACTIVE_TMF && + list_is_first(&arg->tmf_elem, &ha->tmf_pending)) break; } - list_del(&tmf_elem); + list_del(&arg->tmf_elem); - if (!rc) - fcport->active_tmf++; + if (!rc) { + ha->active_tmf++; + list_add_tail(&arg->tmf_elem, &ha->tmf_active); + } spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); @@ -2257,15 +2271,18 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, a.vha = fcport->vha; a.fcport = fcport; a.lun = lun; + a.flags = flags; + INIT_LIST_HEAD(&a.tmf_elem); + if (flags & (TCF_LUN_RESET|TCF_ABORT_TASK_SET|TCF_CLEAR_TASK_SET|TCF_CLEAR_ACA)) { a.modifier = MK_SYNC_ID_LUN; - - if (qla_get_tmf(fcport)) - return QLA_FUNCTION_FAILED; } else { a.modifier = MK_SYNC_ID; } + if (qla_get_tmf(&a)) + return QLA_FUNCTION_FAILED; + if (vha->hw->mqenable) { for (i = 0; i < vha->hw->num_qpairs; i++) { qpair = vha->hw->queue_pair_map[i]; @@ -2291,13 +2308,10 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint64_t lun, 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); - + qla_put_tmf(&a); return rval; } @@ -5526,7 +5540,6 @@ 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); diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 877e4f446709..47bbc8b321f8 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -3009,6 +3009,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) atomic_set(&ha->num_pend_mbx_stage3, 0); atomic_set(&ha->zio_threshold, DEFAULT_ZIO_THRESHOLD); ha->last_zio_threshold = DEFAULT_ZIO_THRESHOLD; + INIT_LIST_HEAD(&ha->tmf_pending); + INIT_LIST_HEAD(&ha->tmf_active); /* Assign ISP specific operations. */ if (IS_QLA2100(ha)) {