From patchwork Sat Nov 7 12:59:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karsten Graul X-Patchwork-Id: 11888939 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=-9.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,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 9F9B1C388F7 for ; Sat, 7 Nov 2020 13:01:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63A3A206D4 for ; Sat, 7 Nov 2020 13:01:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="LRQFFla7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728192AbgKGNBB (ORCPT ); Sat, 7 Nov 2020 08:01:01 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:2390 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728026AbgKGNAV (ORCPT ); Sat, 7 Nov 2020 08:00:21 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0A7CW50a099380; Sat, 7 Nov 2020 08:00:20 -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=/i3i9v1aWaAjXZWOlSFqJh43M+8QXv3ystWotp7zvIc=; b=LRQFFla7jDOOSiiDyVA42hvxuqATLXRXOm9mRoeIFbQ9Qqvh2UEYVrC22jfewleLNGWB 75UhTIp70E2KhGSkwUBc/lEY0eXh0VsxnfM2yh9rHEsm/xyIWdSKYvvXx9ER4EXY/DFB MS36fsExeiL8u9lEpxdVfjtyLko3XF+I9g47EcfRRbnKq/OLtyWiGAEY5180U/5d0Y00 BoBirPgidzioxQWrjhnOczKwXeQcSqNAO3RKWuNrF/UM3ho3xlOJf/0bWK/Bwv8qU85f R1KFJ7do9agHkk1j1x3LDYzDr5s6DTcCkxGgbCT7ZgbsFRLs2z86KqSGXkgfvA8wKQMd OA== Received: from ppma04ams.nl.ibm.com (63.31.33a9.ip4.static.sl-reverse.com [169.51.49.99]) by mx0a-001b2d01.pphosted.com with ESMTP id 34nry9bqm8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 07 Nov 2020 08:00:20 -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 0A7CvCCX016083; Sat, 7 Nov 2020 13:00:13 GMT Received: from b06avi18626390.portsmouth.uk.ibm.com (b06avi18626390.portsmouth.uk.ibm.com [9.149.26.192]) by ppma04ams.nl.ibm.com with ESMTP id 34nk788ag8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 07 Nov 2020 13:00:13 +0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0A7D0Aof24445380 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 7 Nov 2020 13:00:10 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4E65DA406E; Sat, 7 Nov 2020 13:00:10 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 280FCA4082; Sat, 7 Nov 2020 13:00:10 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Sat, 7 Nov 2020 13:00:10 +0000 (GMT) From: Karsten Graul To: davem@davemloft.net Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org, hca@linux.ibm.com, raspl@linux.ibm.com Subject: [PATCH net-next v3 10/15] net/smc: Introduce SMCR get link command Date: Sat, 7 Nov 2020 13:59:53 +0100 Message-Id: <20201107125958.16384-11-kgraul@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201107125958.16384-1-kgraul@linux.ibm.com> References: <20201107125958.16384-1-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=2020-11-07_07:2020-11-05,2020-11-07 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_spam_definite policy=outbound score=100 suspectscore=0 impostorscore=0 lowpriorityscore=0 adultscore=0 malwarescore=0 clxscore=1015 priorityscore=1501 bulkscore=0 mlxlogscore=-1000 mlxscore=100 spamscore=100 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011070081 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Guvenc Gulce Introduce get link command which loops through all available links of all available link groups. It uses the SMC-R linkgroup list as entry point, not the socket list, which makes linkgroup diagnosis possible, in case linkgroup does not contain active connections anymore. Signed-off-by: Guvenc Gulce Signed-off-by: Karsten Graul --- include/uapi/linux/smc_diag.h | 8 +++++ net/smc/smc_diag.c | 62 ++++++++++++++++++++++++++++++++++- 2 files changed, 69 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h index 6ae028344b6d..a57df0296aa4 100644 --- a/include/uapi/linux/smc_diag.h +++ b/include/uapi/linux/smc_diag.h @@ -4,6 +4,7 @@ #include #include +#include #include #include @@ -79,6 +80,7 @@ enum { /* SMC_DIAG_GET_LGR_INFO command extensions */ enum { SMC_DIAG_LGR_INFO_SMCR = 1, + SMC_DIAG_LGR_INFO_SMCR_LINK, }; #define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1) @@ -129,6 +131,12 @@ struct smc_diag_linkinfo { __u8 ibport; /* RDMA device port number */ __u8 gid[40]; /* local GID */ __u8 peer_gid[40]; /* peer GID */ + /* Fields above used by legacy v1 code */ + __u32 conn_cnt; + __u8 netdev[IFNAMSIZ]; /* ethernet device name */ + __u8 link_uid[4]; /* unique link id */ + __u8 peer_link_uid[4]; /* unique peer link id */ + __u32 link_state; /* link state */ }; struct smc_diag_lgrinfo { diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c index c958b23843e6..9a41548d6263 100644 --- a/net/smc/smc_diag.c +++ b/net/smc/smc_diag.c @@ -20,6 +20,7 @@ #include #include "smc.h" +#include "smc_ib.h" #include "smc_core.h" static const struct smc_diag_ops *smc_diag_ops; @@ -205,6 +206,54 @@ static bool smc_diag_fill_dmbinfo(struct sock *sk, struct sk_buff *skb) return true; } +static int smc_diag_fill_lgr_link(struct smc_link_group *lgr, + struct smc_link *link, + struct sk_buff *skb, + struct netlink_callback *cb, + struct smc_diag_req_v2 *req) +{ + struct smc_diag_linkinfo link_info; + int dummy = 0, rc = 0; + struct nlmsghdr *nlh; + + nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, MAGIC_SEQ_V2_ACK, + cb->nlh->nlmsg_type, 0, NLM_F_MULTI); + + memset(&link_info, 0, sizeof(link_info)); + link_info.link_state = link->state; + link_info.link_id = link->link_id; + link_info.conn_cnt = atomic_read(&link->conn_cnt); + link_info.ibport = link->ibport; + + memcpy(link_info.link_uid, link->link_uid, + sizeof(link_info.link_uid)); + snprintf(link_info.ibname, sizeof(link_info.ibname), "%s", + link->ibname); + snprintf(link_info.netdev, sizeof(link_info.netdev), "%s", + link->ndevname); + memcpy(link_info.peer_link_uid, link->peer_link_uid, + sizeof(link_info.peer_link_uid)); + + smc_gid_be16_convert(link_info.gid, + link->gid); + smc_gid_be16_convert(link_info.peer_gid, + link->peer_gid); + + /* Just a command place holder to signal back the command reply type */ + if (nla_put(skb, SMC_DIAG_GET_LGR_INFO, sizeof(dummy), &dummy) < 0) + goto errout; + if (nla_put(skb, SMC_DIAG_LGR_INFO_SMCR_LINK, + sizeof(link_info), &link_info) < 0) + goto errout; + + nlmsg_end(skb, nlh); + return rc; + +errout: + nlmsg_cancel(skb, nlh); + return -EMSGSIZE; +} + static int smc_diag_fill_lgr(struct smc_link_group *lgr, struct sk_buff *skb, struct netlink_callback *cb, @@ -240,7 +289,7 @@ static int smc_diag_handle_lgr(struct smc_link_group *lgr, struct smc_diag_req_v2 *req) { struct nlmsghdr *nlh; - int rc = 0; + int i, rc = 0; nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, MAGIC_SEQ_V2_ACK, cb->nlh->nlmsg_type, 0, NLM_F_MULTI); @@ -252,6 +301,17 @@ static int smc_diag_handle_lgr(struct smc_link_group *lgr, goto errout; nlmsg_end(skb, nlh); + + if ((req->cmd_ext & (1 << (SMC_DIAG_LGR_INFO_SMCR_LINK - 1)))) { + for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) { + if (!smc_link_usable(&lgr->lnk[i])) + continue; + rc = smc_diag_fill_lgr_link(lgr, &lgr->lnk[i], skb, + cb, req); + if (rc < 0) + goto errout; + } + } return rc; errout: