From patchwork Mon Nov 2 19:34:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karsten Graul X-Patchwork-Id: 11875129 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 00D9EC2D0A3 for ; Mon, 2 Nov 2020 19:35:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AEFCE22275 for ; Mon, 2 Nov 2020 19:35:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="EvIr0Jmz" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726949AbgKBTfJ (ORCPT ); Mon, 2 Nov 2020 14:35:09 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:17664 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725806AbgKBTee (ORCPT ); Mon, 2 Nov 2020 14:34:34 -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 0A2JXDHG145431; Mon, 2 Nov 2020 14:34:33 -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=sMQNOIZtCtGN5tCOTTEV7U3ypuN59R33hyWHpQRjaWM=; b=EvIr0JmzOLqK46MZVo3/8pU0YbD4Ai9N8rvVAOzD8pUVTkQnUMgjVvjQHXMf942Gc/rz 0pD0Ep50GPa79qRfXs6mjulcdf3/axp8t406BoXk6DoAWwGxpuLUlj2vhXflGBMZAaia KD3srWjvF20M8LXuSf3/9kVHHs3lR/+cS60NmlKwPJQ22p/1rGabIfS710tmIjxRh4vv khiNVzaG+KhGLid0FvvCBL+khDGddlB0/oBI4DU6zcpBdIuGYwnou94yYTXv9/saXuOp 5cmdqnqgf33TUo3Hg3ZHruVF5TBXDDE3D7myA3M1+xhrwFZWwjCPEXnPzpcmo4n1cdJx 7Q== Received: from ppma06ams.nl.ibm.com (66.31.33a9.ip4.static.sl-reverse.com [169.51.49.102]) by mx0a-001b2d01.pphosted.com with ESMTP id 34jphb350m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 02 Nov 2020 14:34:33 -0500 Received: from pps.filterd (ppma06ams.nl.ibm.com [127.0.0.1]) by ppma06ams.nl.ibm.com (8.16.0.42/8.16.0.42) with SMTP id 0A2JXB97027872; Mon, 2 Nov 2020 19:34:31 GMT Received: from b06cxnps4075.portsmouth.uk.ibm.com (d06relay12.portsmouth.uk.ibm.com [9.149.109.197]) by ppma06ams.nl.ibm.com with ESMTP id 34h0fcte9m-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 02 Nov 2020 19:34:30 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0A2JYShs4391432 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 2 Nov 2020 19:34:28 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 380EF4C040; Mon, 2 Nov 2020 19:34:28 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 06C874C04A; Mon, 2 Nov 2020 19:34:28 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.152.85.9]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 2 Nov 2020 19:34:27 +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 10/15] net/smc: Introduce SMCR get link command Date: Mon, 2 Nov 2020 20:34:04 +0100 Message-Id: <20201102193409.70901-11-kgraul@linux.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201102193409.70901-1-kgraul@linux.ibm.com> References: <20201102193409.70901-1-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=2020-11-02_13:2020-11-02,2020-11-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 bulkscore=0 phishscore=0 mlxlogscore=999 impostorscore=0 suspectscore=1 malwarescore=0 spamscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011020149 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 Reported-by: kernel test robot --- include/uapi/linux/smc_diag.h | 7 ++++ net/smc/smc_diag.c | 62 ++++++++++++++++++++++++++++++++++- 2 files changed, 68 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h index 6ae028344b6d..16b8ea9da3d5 100644 --- a/include/uapi/linux/smc_diag.h +++ b/include/uapi/linux/smc_diag.h @@ -79,6 +79,7 @@ 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 +130,12 @@ 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 c53904b3f350..6885814b6e4f 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" struct smc_diag_dump_ctx { @@ -203,6 +204,54 @@ 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, @@ -238,7 +287,7 @@ 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); @@ -250,6 +299,17 @@ 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: