From patchwork Mon Nov 2 19:34:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karsten Graul X-Patchwork-Id: 11875105 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 0F336C2D0A3 for ; Mon, 2 Nov 2020 19:34:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A634B2225E for ; Mon, 2 Nov 2020 19:34:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="VnOTd8BZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726924AbgKBTer (ORCPT ); Mon, 2 Nov 2020 14:34:47 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:49298 "EHLO mx0b-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726751AbgKBTeg (ORCPT ); Mon, 2 Nov 2020 14:34:36 -0500 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0A2JWwrU015344; 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=w99bE9+8A6yJTY2d7U9dS4NK2pzEHXP0TvSqxY3Azwk=; b=VnOTd8BZ5Mz0HQHqRSQJp4RIdqoGeBcaniUB6rLYA8jcZs30zOPBJZV1oBl5yhCi99BA vUcc2zYE7b6SGvHVeOpFAPAAlm4nJd48TmHW3kQwpy9Nb1+0Sd4FP/ZHEss626QkCsu7 JlQxP1qkfCF9clkkTmvxE+HEwVJK0Y9PJJ7/EqIqsaRT0MrxuSdfByBHVkOv2HgkmFhF pAXYte/PRDHhxgmkdfnX4ertfmwzuCHgLGuVfkhD5yH/w1wrO9wY7HLSRcclNGhLihYV uqayIYtUMLJouRQjuQEA9/eKPjZdg/Mu7BbQJUYUaMuQeH6HHoKS/889RlfxFNQHR3y8 EA== 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 34jm708ftr-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 0A2JXMHW027878; 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 34h0fcte9n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 02 Nov 2020 19:34:31 +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 0A2JYSog61473078 (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 B1E474C040; 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 809C54C044; 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 19:34:28 +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 12/15] net/smc: Add support for obtaining SMCD device list Date: Mon, 2 Nov 2020 20:34:06 +0100 Message-Id: <20201102193409.70901-13-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 mlxscore=0 suspectscore=1 spamscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 phishscore=0 clxscore=1015 malwarescore=0 bulkscore=0 mlxlogscore=999 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 Deliver SMCD device information via netlink based diagnostic interface. Signed-off-by: Guvenc Gulce Signed-off-by: Karsten Graul --- include/uapi/linux/smc.h | 2 + include/uapi/linux/smc_diag.h | 20 +++++++++ net/smc/smc_core.h | 27 +++++++++++++ net/smc/smc_diag.c | 76 +++++++++++++++++++++++++++++++++++ net/smc/smc_ib.h | 1 - 5 files changed, 125 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/smc.h b/include/uapi/linux/smc.h index 635e2c2aeac5..736e8b98c8a5 100644 --- a/include/uapi/linux/smc.h +++ b/include/uapi/linux/smc.h @@ -38,4 +38,6 @@ enum { /* SMC PNET Table commands */ #define SMC_LGR_ID_SIZE 4 #define SMC_MAX_HOSTNAME_LEN 32 /* Max length of hostname */ #define SMC_MAX_EID_LEN 32 /* Max length of eid */ +#define SMC_MAX_PORTS 2 /* Max # of ports per ib device */ +#define SMC_PCI_ID_STR_LEN 16 /* Max length of pci id string */ #endif /* _UAPI_LINUX_SMC_H */ diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h index ee9668917aa7..b01133eb998c 100644 --- a/include/uapi/linux/smc_diag.h +++ b/include/uapi/linux/smc_diag.h @@ -73,6 +73,7 @@ enum { /* V2 Commands */ enum { SMC_DIAG_GET_LGR_INFO = SMC_DIAG_EXTS_PER_CMD, + SMC_DIAG_GET_DEV_INFO, __SMC_DIAG_EXT_MAX, }; @@ -83,6 +84,11 @@ enum { SMC_DIAG_LGR_INFO_SMCD, }; +/* SMC_DIAG_GET_DEV_INFO command extensions */ +enum { + SMC_DIAG_DEV_INFO_SMCD = 1, +}; + #define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1) #define SMC_DIAG_EXT_MAX (__SMC_DIAG_EXT_MAX - 1) @@ -163,6 +169,20 @@ struct smcd_diag_dmbinfo { /* SMC-D Socket internals */ struct smc_diag_v2_lgr_info v2_lgr_info; /* SMCv2 info */ }; +struct smc_diag_dev_info { + /* Pnet ID per device port */ + __u8 pnet_id[SMC_MAX_PORTS][SMC_MAX_PNETID_LEN]; + /* whether pnetid is set by user */ + __u8 pnetid_by_user[SMC_MAX_PORTS]; + __u32 use_cnt; /* Number of linkgroups */ + __u8 is_critical; /* Is device critical */ + __u32 pci_fid; /* PCI FID */ + __u16 pci_pchid; /* PCI CHID */ + __u16 pci_vendor; /* PCI Vendor */ + __u16 pci_device; /* PCI Device Vendor ID */ + __u8 pci_id[SMC_PCI_ID_STR_LEN]; /* PCI ID */ +}; + struct smc_diag_lgr { __u8 lgr_id[SMC_LGR_ID_SIZE]; /* Linkgroup identifier */ __u8 lgr_role; /* Linkgroup role */ diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index 639c7565b302..0f966a21c223 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -13,6 +13,7 @@ #define _SMC_CORE_H #include +#include #include #include "smc.h" @@ -366,6 +367,32 @@ static inline bool smc_link_active(struct smc_link *lnk) return lnk->state == SMC_LNK_ACTIVE; } +struct smc_pci_dev { + __u32 pci_fid; + __u16 pci_pchid; + __u16 pci_vendor; + __u16 pci_device; + __u8 pci_id[SMC_PCI_ID_STR_LEN]; +}; + +static inline void smc_set_pci_values(struct pci_dev *pci_dev, + struct smc_pci_dev *smc_dev) +{ + smc_dev->pci_vendor = pci_dev->vendor; + smc_dev->pci_device = pci_dev->device; + snprintf(smc_dev->pci_id, sizeof(smc_dev->pci_id), "%s", + pci_name(pci_dev)); +#if IS_ENABLED(CONFIG_S390) + { + struct zpci_dev *zdev; + + zdev = to_zpci(pci_dev); + smc_dev->pci_fid = zdev->fid; + smc_dev->pci_pchid = zdev->pchid; + } +#endif +} + struct smc_sock; struct smc_clc_msg_accept_confirm; struct smc_clc_msg_local; diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c index fcff07a9ea47..252aae0b11d9 100644 --- a/net/smc/smc_diag.c +++ b/net/smc/smc_diag.c @@ -448,6 +448,78 @@ static int smc_diag_fill_smcd_dev(struct smcd_dev_list *dev_list, return rc; } +static int smc_diag_handle_smcd_dev(struct smcd_dev *smcd, + struct sk_buff *skb, + struct netlink_callback *cb, + struct smc_diag_req_v2 *req) +{ + struct smc_diag_dev_info smc_diag_dev; + struct smc_pci_dev smc_pci_dev; + struct nlmsghdr *nlh; + int dummy = 0; + int rc = 0; + + nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, MAGIC_SEQ_V2_ACK, + cb->nlh->nlmsg_type, 0, NLM_F_MULTI); + if (!nlh) + return -EMSGSIZE; + + memset(&smc_diag_dev, 0, sizeof(smc_diag_dev)); + memset(&smc_pci_dev, 0, sizeof(smc_pci_dev)); + smc_diag_dev.use_cnt = atomic_read(&smcd->lgr_cnt); + smc_diag_dev.is_critical = (smc_diag_dev.use_cnt > 0); + smc_diag_dev.pnetid_by_user[0] = smcd->pnetid_by_user; + smc_set_pci_values(to_pci_dev(smcd->dev.parent), &smc_pci_dev); + smc_diag_dev.pci_device = smc_pci_dev.pci_device; + smc_diag_dev.pci_fid = smc_pci_dev.pci_fid; + smc_diag_dev.pci_pchid = smc_pci_dev.pci_pchid; + smc_diag_dev.pci_vendor = smc_pci_dev.pci_vendor; + snprintf(smc_diag_dev.pci_id, sizeof(smc_diag_dev.pci_id), "%s", + smc_pci_dev.pci_id); + snprintf((char *)&smc_diag_dev.pnet_id[0], + sizeof(smc_diag_dev.pnet_id[0]), "%s", smcd->pnetid); + /* Just a command place holder to signal back the command reply type */ + if (nla_put(skb, SMC_DIAG_GET_DEV_INFO, sizeof(dummy), &dummy) < 0) + goto errout; + + if (nla_put(skb, SMC_DIAG_DEV_INFO_SMCD, + sizeof(smc_diag_dev), &smc_diag_dev) < 0) + goto errout; + + nlmsg_end(skb, nlh); + return rc; + +errout: + nlmsg_cancel(skb, nlh); + return -EMSGSIZE; +} + +static int smc_diag_prep_smcd_dev(struct smcd_dev_list *dev_list, + struct sk_buff *skb, + struct netlink_callback *cb, + struct smc_diag_req_v2 *req) +{ + struct smc_diag_dump_ctx *cb_ctx = smc_dump_context(cb); + int snum = cb_ctx->pos[0]; + struct smcd_dev *smcd; + int rc = 0, num = 0; + + mutex_lock(&dev_list->mutex); + list_for_each_entry(smcd, &dev_list->list, list) { + if (num < snum) + goto next; + rc = smc_diag_handle_smcd_dev(smcd, skb, cb, req); + if (rc < 0) + goto errout; +next: + num++; + } +errout: + mutex_unlock(&dev_list->mutex); + cb_ctx->pos[0] = num; + return rc; +} + static int __smc_diag_dump(struct sock *sk, struct sk_buff *skb, struct netlink_callback *cb, const struct smc_diag_req *req) @@ -549,6 +621,10 @@ static int smc_diag_dump_ext(struct sk_buff *skb, struct netlink_callback *cb) if ((req->cmd_ext & (1 << (SMC_DIAG_LGR_INFO_SMCD - 1)))) smc_diag_fill_smcd_dev(&smcd_dev_list, skb, cb, req); + } else if (req->cmd == SMC_DIAG_GET_DEV_INFO) { + if ((req->cmd_ext & (1 << (SMC_DIAG_DEV_INFO_SMCD - 1)))) + smc_diag_prep_smcd_dev(&smcd_dev_list, skb, cb, + req); } return skb->len; diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h index b0868146b46b..c4380112ba44 100644 --- a/net/smc/smc_ib.h +++ b/net/smc/smc_ib.h @@ -19,7 +19,6 @@ #include #include -#define SMC_MAX_PORTS 2 /* Max # of ports */ #define SMC_GID_SIZE sizeof(union ib_gid) #define SMC_IB_MAX_SEND_SGE 2