From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 9A394C43381 for ; Thu, 28 Feb 2019 14:10:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6E1D02133D for ; Thu, 28 Feb 2019 14:10:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732333AbfB1OK2 (ORCPT ); Thu, 28 Feb 2019 09:10:28 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:35300 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731930AbfB1OK2 (ORCPT ); Thu, 28 Feb 2019 09:10:28 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1SE5Upl027750 for ; Thu, 28 Feb 2019 09:10:27 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2qxfnrvtve-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 28 Feb 2019 09:10:26 -0500 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 28 Feb 2019 14:10:24 -0000 Received: from b06cxnps3075.portsmouth.uk.ibm.com (9.149.109.195) by e06smtp07.uk.ibm.com (192.168.101.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 28 Feb 2019 14:10:22 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x1SEAK6055378034 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 28 Feb 2019 14:10:21 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DAEC4A4057; Thu, 28 Feb 2019 14:10:20 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8AF1FA4053; Thu, 28 Feb 2019 14:10:20 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Thu, 28 Feb 2019 14:10:20 +0000 (GMT) From: Ursula Braun To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, schwidefsky@de.ibm.com, heiko.carstens@de.ibm.com, raspl@linux.ibm.com, kgraul@linux.ibm.com, ubraun@linux.ibm.com Subject: [PATCH net-next 1/1] net/smc: allow pnetid-less configuration Date: Thu, 28 Feb 2019 15:10:08 +0100 X-Mailer: git-send-email 2.16.4 X-TM-AS-GCONF: 00 x-cbid: 19022814-0028-0000-0000-0000034E2AFB X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19022814-0029-0000-0000-0000240C8697 Message-Id: <20190228141008.16458-1-ubraun@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-02-28_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1902280098 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Without hardware pnetid support there must currently be a pnet table configured to determine the IB device port to be used for SMC RDMA traffic. This patch enables a setup without pnet table, if the used handshake interface belongs already to a RoCE port. Signed-off-by: Ursula Braun --- net/smc/smc_pnet.c | 42 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-) diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c index 25dfbe343e26..8d2f6296279c 100644 --- a/net/smc/smc_pnet.c +++ b/net/smc/smc_pnet.c @@ -754,9 +754,47 @@ static int smc_pnet_find_ndev_pnetid_by_table(struct net_device *ndev, return rc; } +/* if handshake network device belongs to a roce device, return its + * IB device and port + */ +static void smc_pnet_find_rdma_dev(struct net_device *netdev, + struct smc_ib_device **smcibdev, + u8 *ibport, unsigned short vlan_id, u8 gid[]) +{ + struct smc_ib_device *ibdev; + + spin_lock(&smc_ib_devices.lock); + list_for_each_entry(ibdev, &smc_ib_devices.list, list) { + struct net_device *ndev; + int i; + + for (i = 1; i <= SMC_MAX_PORTS; i++) { + if (!rdma_is_port_valid(ibdev->ibdev, i)) + continue; + if (!ibdev->ibdev->ops.get_netdev) + continue; + ndev = ibdev->ibdev->ops.get_netdev(ibdev->ibdev, i); + if (!ndev) + continue; + dev_put(ndev); + if (netdev == ndev && + smc_ib_port_active(ibdev, i) && + !smc_ib_determine_gid(ibdev, i, vlan_id, gid, + NULL)) { + *smcibdev = ibdev; + *ibport = i; + break; + } + } + } + spin_unlock(&smc_ib_devices.lock); +} + /* Determine the corresponding IB device port based on the hardware PNETID. * Searching stops at the first matching active IB device port with vlan_id * configured. + * If nothing found, check pnetid table. + * If nothing found, try to use handshake device */ static void smc_pnet_find_roce_by_pnetid(struct net_device *ndev, struct smc_ib_device **smcibdev, @@ -770,8 +808,10 @@ static void smc_pnet_find_roce_by_pnetid(struct net_device *ndev, ndev = pnet_find_base_ndev(ndev); if (smc_pnetid_by_dev_port(ndev->dev.parent, ndev->dev_port, ndev_pnetid) && - smc_pnet_find_ndev_pnetid_by_table(ndev, ndev_pnetid)) + smc_pnet_find_ndev_pnetid_by_table(ndev, ndev_pnetid)) { + smc_pnet_find_rdma_dev(ndev, smcibdev, ibport, vlan_id, gid); return; /* pnetid could not be determined */ + } spin_lock(&smc_ib_devices.lock); list_for_each_entry(ibdev, &smc_ib_devices.list, list) { -- 2.16.4