From patchwork Tue Dec 1 19:20:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karsten Graul X-Patchwork-Id: 11943581 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBA25C83017 for ; Tue, 1 Dec 2020 19:22:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 716BC221FD for ; Tue, 1 Dec 2020 19:22:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="HYSMUhi9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404325AbgLATV5 (ORCPT ); Tue, 1 Dec 2020 14:21:57 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:59114 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1731223AbgLATVp (ORCPT ); Tue, 1 Dec 2020 14:21:45 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0B1J5cwi009128; Tue, 1 Dec 2020 14:21:01 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=pp1; bh=jDCaiCwvw+nmkSQCw2Ei5Gdvdudsgqb5negAz6P3+Sg=; b=HYSMUhi9PVfIXbPCnJPtpnwy5EtE4ebZzddM2o2Q4W5TxekNslMEZYeS8Y1CSN46L8N1 wFhxuHg+qGZ7H0tLFdvQwuteqKzPYd/1fbbPIoQWQbqjJgZDzdUhvqS2qTwbwosHfclI q3b5hSQVa5R6HdRKk6HweNTTejr5AX0geAyIVEq8zzPAPks+8ykeq3++CQLlKLfct/z+ fsqNBt9774L3Yaswkkk1PQvSKCjLVhnMaFn1/etRPnymoQwJbyC2JX6cXvBQz9Tx3nCj DqgCJVp6OrPHjs4JjzyXf4o9HJ7slPx8TJn+XDWKx6VSgswMhvzdarDDYOeD8v5uiCKY lQ== Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0b-001b2d01.pphosted.com with ESMTP id 355jt77hk3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Dec 2020 14:21:01 -0500 Received: from pps.filterd (ppma04ams.nl.ibm.com [127.0.0.1]) by ppma04ams.nl.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0B1JI9kw018316; Tue, 1 Dec 2020 19:20:59 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma04ams.nl.ibm.com with ESMTP id 353e683etu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Dec 2020 19:20:59 +0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0B1JKuks53150112 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 1 Dec 2020 19:20:56 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id AE5EBAE045; Tue, 1 Dec 2020 19:20:56 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 749C5AE04D; Tue, 1 Dec 2020 19:20:56 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 1 Dec 2020 19:20:56 +0000 (GMT) From: Karsten Graul To: David Miller , Jakub Kicinski Cc: Heiko Carstens , Stefan Raspl , netdev@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH net-next v7 04/14] net/smc: Add link counters for IB device ports Date: Tue, 1 Dec 2020 20:20:39 +0100 Message-Id: <20201201192049.53517-5-kgraul@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201201192049.53517-1-kgraul@linux.ibm.com> References: <20201201192049.53517-1-kgraul@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-12-01_07:2020-11-30,2020-12-01 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxscore=0 adultscore=0 spamscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 lowpriorityscore=0 mlxlogscore=999 suspectscore=2 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012010112 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Guvenc Gulce Add link counters to the structure of the smc ib device, one counter per ib port. Increase/decrease the counters as needed in the corresponding routines. Signed-off-by: Guvenc Gulce Signed-off-by: Karsten Graul --- net/smc/smc_core.c | 13 +++++++++++++ net/smc/smc_ib.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c index 5bc8ebcd03f3..46087cec3bcd 100644 --- a/net/smc/smc_core.c +++ b/net/smc/smc_core.c @@ -63,6 +63,16 @@ static inline struct list_head *smc_lgr_list_head(struct smc_link_group *lgr, return &smc_lgr_list.list; } +static void smc_ibdev_cnt_inc(struct smc_link *lnk) +{ + atomic_inc(&lnk->smcibdev->lnk_cnt_by_port[lnk->ibport - 1]); +} + +static void smc_ibdev_cnt_dec(struct smc_link *lnk) +{ + atomic_dec(&lnk->smcibdev->lnk_cnt_by_port[lnk->ibport - 1]); +} + static void smc_lgr_schedule_free_work(struct smc_link_group *lgr) { /* client link group creation always follows the server link group @@ -316,6 +326,7 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk, lnk->link_idx = link_idx; lnk->smcibdev = ini->ib_dev; lnk->ibport = ini->ib_port; + smc_ibdev_cnt_inc(lnk); lnk->path_mtu = ini->ib_dev->pattr[ini->ib_port - 1].active_mtu; atomic_set(&lnk->conn_cnt, 0); smc_llc_link_set_uid(lnk); @@ -359,6 +370,7 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk, clear_llc_lnk: smc_llc_link_clear(lnk, false); out: + smc_ibdev_cnt_dec(lnk); put_device(&ini->ib_dev->ibdev->dev); memset(lnk, 0, sizeof(struct smc_link)); lnk->state = SMC_LNK_UNUSED; @@ -749,6 +761,7 @@ void smcr_link_clear(struct smc_link *lnk, bool log) smc_ib_destroy_queue_pair(lnk); smc_ib_dealloc_protection_domain(lnk); smc_wr_free_link_mem(lnk); + smc_ibdev_cnt_dec(lnk); put_device(&lnk->smcibdev->ibdev->dev); smcibdev = lnk->smcibdev; memset(lnk, 0, sizeof(struct smc_link)); diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h index 2ce481187dd0..3b85360a473b 100644 --- a/net/smc/smc_ib.h +++ b/net/smc/smc_ib.h @@ -53,6 +53,8 @@ struct smc_ib_device { /* ib-device infos for smc */ atomic_t lnk_cnt; /* number of links on ibdev */ wait_queue_head_t lnks_deleted; /* wait 4 removal of all links*/ struct mutex mutex; /* protect dev setup+cleanup */ + atomic_t lnk_cnt_by_port[SMC_MAX_PORTS]; + /* number of links per port */ }; struct smc_buf_desc;