From nobody Fri Jan 2 22:08:14 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 654F8E95A61 for ; Sat, 7 Oct 2023 08:45:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232558AbjJGIpO (ORCPT ); Sat, 7 Oct 2023 04:45:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234152AbjJGIpH (ORCPT ); Sat, 7 Oct 2023 04:45:07 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20750C2 for ; Sat, 7 Oct 2023 01:44:44 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1c5db4925f9so22802535ad.1 for ; Sat, 07 Oct 2023 01:44:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1696668283; x=1697273083; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=DYsTV8KQJWPLnxFgGwY07YV1sQ8Lujc5noM4wlj3swY=; b=i9Y8JQmwfQqJop84DuisE1icfL0vhmW8XcScyqc2zOUTQuTR7IPVhnBMVHkv4GVBXL iUghLCwdBfOsST9UzpPItj604USqSCCYA8nc0Vfwy/ovyvaVDVkTpY2FBhPqh8MXrYO5 hl8fJE4QAswjwXrFGnFG5jyjXhuYmHSykZ/dHboHAdBHK54ZsPTZfdLPpBxiwqbL/QBu h4q0UMq7z7vfh6GYo9BAB14OCrSsobbAp1cWLRbgWOfag2qW56A469tixam3fzrUo0/j E4abxO4Y4HRuf9SZKUX6eBmWBzOClDL17FZEzvHMQg6PjiKZWLc4lGL9u1lJHSKXWQhF Xpnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696668283; x=1697273083; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=DYsTV8KQJWPLnxFgGwY07YV1sQ8Lujc5noM4wlj3swY=; b=MaekZ0m6tXe8WkEz3ZYf4GUDQ5yVlFg5jBDBbgpFSpVfolGkKp0E+5x9IbMBkiU8ur aLX4BcLpEtI+rmCB14u9NEGAXyaxQuvhdReUh3bbga2FT8t8Z2M4popJ4gSt1yr3XxX5 ASZ/IHCn/5z4rH8XqOB+0iNe9f+aqLCrqWKn2zc0mTJ2e1weiqgWULMwW4KUyOzPLRfb sm4jMJcjWQi/5ELjg0+huy6dAKCfwJNA6XveusnHFWqnoO+VO4mrdrofBRqCbJloDgsb 3AgSLvGe4lF0qpemxLSj8iFkqL2amYLVmf5Qi420TK4Q0KPwvuexndoGPsCagcFGrD2S lytw== X-Gm-Message-State: AOJu0YwiUmjQ9hmLKilQJxMM0CqN0y4yG4WDG/I6STJXrD0Y3K4dZ8dF wBffJULtxZ5UuKcUn1fEr7j/wh9D9s7H5hOb5f0= X-Google-Smtp-Source: AGHT+IFfYluDDpg6ygH4dFg5jy5tmXVAf4NvvaUhFb/Bu6EObCEfHdWAO6/qFYUW1VtuzlH5uGhaHw== X-Received: by 2002:a17:902:ec90:b0:1c7:27a1:a9e5 with SMTP id x16-20020a170902ec9000b001c727a1a9e5mr12310794plg.33.1696668283532; Sat, 07 Oct 2023 01:44:43 -0700 (PDT) Received: from C02FG34NMD6R.bytedance.net ([203.208.189.14]) by smtp.gmail.com with ESMTPSA id e4-20020a17090301c400b001c75627545csm5298205plh.135.2023.10.07.01.44.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Oct 2023 01:44:42 -0700 (PDT) From: Albert Huang To: Karsten Graul , Wenjia Zhang , Jan Karcher , "D. Wythe" , Tony Lu Cc: Albert Huang , Wen Gu , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-s390@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net] net/smc: fix smc clc failed issue when netdevice not in init_net Date: Sat, 7 Oct 2023 16:44:19 +0800 Message-Id: <20231007084420.80236-1-huangjie.albert@bytedance.com> X-Mailer: git-send-email 2.37.1 (Apple Git-137.1) MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" If the netdevice is within a container and communicates externally through network technologies such as VxLAN, we won't be able to find routing information in the init_net namespace. To address this issue, we need to add a struct net parameter to the smc_ib_find_route function. This allow us to locate the routing information within the corresponding net namespace, ensuring the correct completion of the SMC CLC interaction. Signed-off-by: Albert Huang --- net/smc/af_smc.c | 3 ++- net/smc/smc_ib.c | 7 ++++--- net/smc/smc_ib.h | 2 +- 3 files changed, 7 insertions(+), 5 deletions(-) diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c index bacdd971615e..7a874da90c7f 100644 --- a/net/smc/af_smc.c +++ b/net/smc/af_smc.c @@ -1201,6 +1201,7 @@ static int smc_connect_rdma_v2_prepare(struct smc_soc= k *smc, (struct smc_clc_msg_accept_confirm_v2 *)aclc; struct smc_clc_first_contact_ext *fce =3D smc_get_clc_first_contact_ext(clc_v2, false); + struct net *net =3D sock_net(&smc->sk); int rc; =20 if (!ini->first_contact_peer || aclc->hdr.version =3D=3D SMC_V1) @@ -1210,7 +1211,7 @@ static int smc_connect_rdma_v2_prepare(struct smc_soc= k *smc, memcpy(ini->smcrv2.nexthop_mac, &aclc->r0.lcl.mac, ETH_ALEN); ini->smcrv2.uses_gateway =3D false; } else { - if (smc_ib_find_route(smc->clcsock->sk->sk_rcv_saddr, + if (smc_ib_find_route(net, smc->clcsock->sk->sk_rcv_saddr, smc_ib_gid_to_ipv4(aclc->r0.lcl.gid), ini->smcrv2.nexthop_mac, &ini->smcrv2.uses_gateway)) diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c index 9b66d6aeeb1a..89981dbe46c9 100644 --- a/net/smc/smc_ib.c +++ b/net/smc/smc_ib.c @@ -193,7 +193,7 @@ bool smc_ib_port_active(struct smc_ib_device *smcibdev,= u8 ibport) return smcibdev->pattr[ibport - 1].state =3D=3D IB_PORT_ACTIVE; } =20 -int smc_ib_find_route(__be32 saddr, __be32 daddr, +int smc_ib_find_route(struct net *net, __be32 saddr, __be32 daddr, u8 nexthop_mac[], u8 *uses_gateway) { struct neighbour *neigh =3D NULL; @@ -205,7 +205,7 @@ int smc_ib_find_route(__be32 saddr, __be32 daddr, =20 if (daddr =3D=3D cpu_to_be32(INADDR_NONE)) goto out; - rt =3D ip_route_output_flow(&init_net, &fl4, NULL); + rt =3D ip_route_output_flow(net, &fl4, NULL); if (IS_ERR(rt)) goto out; if (rt->rt_uses_gateway && rt->rt_gw_family !=3D AF_INET) @@ -235,6 +235,7 @@ static int smc_ib_determine_gid_rcu(const struct net_de= vice *ndev, if (smcrv2 && attr->gid_type =3D=3D IB_GID_TYPE_ROCE_UDP_ENCAP && smc_ib_gid_to_ipv4((u8 *)&attr->gid) !=3D cpu_to_be32(INADDR_NONE)) { struct in_device *in_dev =3D __in_dev_get_rcu(ndev); + struct net *net =3D dev_net(ndev); const struct in_ifaddr *ifa; bool subnet_match =3D false; =20 @@ -248,7 +249,7 @@ static int smc_ib_determine_gid_rcu(const struct net_de= vice *ndev, } if (!subnet_match) goto out; - if (smcrv2->daddr && smc_ib_find_route(smcrv2->saddr, + if (smcrv2->daddr && smc_ib_find_route(net, smcrv2->saddr, smcrv2->daddr, smcrv2->nexthop_mac, &smcrv2->uses_gateway)) diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h index 4df5f8c8a0a1..ef8ac2b7546d 100644 --- a/net/smc/smc_ib.h +++ b/net/smc/smc_ib.h @@ -112,7 +112,7 @@ void smc_ib_sync_sg_for_device(struct smc_link *lnk, int smc_ib_determine_gid(struct smc_ib_device *smcibdev, u8 ibport, unsigned short vlan_id, u8 gid[], u8 *sgid_index, struct smc_init_info_smcrv2 *smcrv2); -int smc_ib_find_route(__be32 saddr, __be32 daddr, +int smc_ib_find_route(struct net *net, __be32 saddr, __be32 daddr, u8 nexthop_mac[], u8 *uses_gateway); bool smc_ib_is_valid_local_systemid(void); int smcr_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb); --=20 2.37.1 (Apple Git-137.1)