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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 D409EC2D0F8 for ; Wed, 13 May 2020 06:31:57 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 881EC206F5 for ; Wed, 13 May 2020 06:31:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="uHAjZcD7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 881EC206F5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=1cTZbfIM00bfGBj90hnZsM02GyDtebCYjSeKmKOlVR4=; b=uHAjZcD7Ty/leC K9M+d+cI+M75kPp2eZNKHBiJHuxUqnFENJsa5qjRRYPpZOX0T2XLAz72boQK+g6+t84ZSEM2ggXVE GMaWRnU980+ACE8XaYEiebluuNqIADQHmUb4KNQlFlmw+ccaBxveasU2USNBlYabpfEXi+RUY+QKb NGID0NNuKWqAvJqQ0gzfn9oe2+/UKvw09NcEFZW8Oj/VSqsxde+r3yZJudqVIOAeeEpZStNZIdkWS jupqnVmPoXww9zRvhvXsWbP9jSB0u9Q84NvH1vuHLErc5fuxVbevy0H9XKhqAsIIOe8oDz8w5WFuI eY2LiRLS4NZtq2qQnYCw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYkvp-00028g-Mf; Wed, 13 May 2020 06:31:53 +0000 Received: from [2001:4bb8:180:9d3f:c70:4a89:bc61:2] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYks2-0004lp-2x; Wed, 13 May 2020 06:27:58 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Subject: [PATCH 22/33] ipv6: add ip6_sock_set_v6only Date: Wed, 13 May 2020 08:26:37 +0200 Message-Id: <20200513062649.2100053-23-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513062649.2100053-1-hch@lst.de> References: <20200513062649.2100053-1-hch@lst.de> MIME-Version: 1.0 X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marcelo Ricardo Leitner , Eric Dumazet , linux-nvme@lists.infradead.org, linux-sctp@vger.kernel.org, target-devel@vger.kernel.org, linux-afs@lists.infradead.org, drbd-dev@lists.linbit.com, linux-cifs@vger.kernel.org, rds-devel@oss.oracle.com, linux-rdma@vger.kernel.org, cluster-devel@redhat.com, Alexey Kuznetsov , linux-block@vger.kernel.org, ceph-devel@vger.kernel.org, linux-nfs@vger.kernel.org, Neil Horman , Hideaki YOSHIFUJI , netdev@vger.kernel.org, Vlad Yasevich , linux-kernel@vger.kernel.org, Jon Maloy , Ying Xue , ocfs2-devel@oss.oracle.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Add a helper to directly set the IPV6_V6ONLY sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig --- include/net/ipv6.h | 3 +++ net/ipv6/ip6_udp_tunnel.c | 5 +---- net/ipv6/ipv6_sockglue.c | 11 +++++++++++ net/sunrpc/svcsock.c | 8 ++------ 4 files changed, 17 insertions(+), 10 deletions(-) diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 955badd1e8ffc..e24b59201a00d 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -1174,4 +1174,7 @@ int ipv6_sock_mc_join_ssm(struct sock *sk, int ifindex, const struct in6_addr *addr, unsigned int mode); int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr); + +int ip6_sock_set_v6only(struct sock *sk, bool val); + #endif /* _NET_IPV6_H */ diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c index 6523609516d25..bc4ee5cb14c8b 100644 --- a/net/ipv6/ip6_udp_tunnel.c +++ b/net/ipv6/ip6_udp_tunnel.c @@ -25,10 +25,7 @@ int udp_sock_create6(struct net *net, struct udp_port_cfg *cfg, goto error; if (cfg->ipv6_v6only) { - int val = 1; - - err = kernel_setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, - (char *) &val, sizeof(val)); + err = ip6_sock_set_v6only(sock->sk, true); if (err < 0) goto error; } diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index 18d05403d3b52..f26224bb3e098 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -136,6 +136,17 @@ static bool setsockopt_needs_rtnl(int optname) return false; } +int ip6_sock_set_v6only(struct sock *sk, bool val) +{ + if (inet_sk(sk)->inet_num) + return -EINVAL; + lock_sock(sk); + sk->sk_ipv6only = val; + release_sock(sk); + return 0; +} +EXPORT_SYMBOL(ip6_sock_set_v6only); + static int do_ipv6_setsockopt(struct sock *sk, int level, int optname, char __user *optval, unsigned int optlen) { diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 7a4f01c79e0f1..7fa7fedec3c5a 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -1328,7 +1328,6 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv, struct sockaddr *newsin = (struct sockaddr *)&addr; int newlen; int family; - int val; RPC_IFDEBUG(char buf[RPC_MAX_ADDRBUFLEN]); dprintk("svc: svc_create_socket(%s, %d, %s)\n", @@ -1364,11 +1363,8 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv, * getting requests from IPv4 remotes. Those should * be shunted to a PF_INET listener via rpcbind. */ - val = 1; - if (family == PF_INET6) - kernel_setsockopt(sock, SOL_IPV6, IPV6_V6ONLY, - (char *)&val, sizeof(val)); - + if (family == PF_INET6 && IS_REACHABLE(CONFIG_IPV6)) + ip6_sock_set_v6only(sock->sk, true); if (type == SOCK_STREAM) sock->sk->sk_reuse = SK_CAN_REUSE; /* allow address reuse */ error = kernel_bind(sock, sin, len); -- 2.26.2 _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme