From patchwork Thu May 28 05:12:31 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11574413 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F304B92A for ; Thu, 28 May 2020 05:14:42 +0000 (UTC) Received: from userp2130.oracle.com (userp2130.oracle.com [156.151.31.86]) (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 C81C1214D8 for ; Thu, 28 May 2020 05:14:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C81C1214D8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=ocfs2-devel-bounces@oss.oracle.com Received: from pps.filterd (userp2130.oracle.com [127.0.0.1]) by userp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04S57dRb033359; Thu, 28 May 2020 05:14:27 GMT Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2130.oracle.com with ESMTP id 316u8r2w3w-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 28 May 2020 05:14:27 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04S5Cuv6039527; Thu, 28 May 2020 05:14:27 GMT Received: from oss.oracle.com (oss-old-reserved.oracle.com [137.254.22.2]) by userp3030.oracle.com with ESMTP id 317ds1ub0j-1 (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO); Thu, 28 May 2020 05:14:26 +0000 Received: from localhost ([127.0.0.1] helo=lb-oss.oracle.com) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1jeAs6-0004gc-1K; Wed, 27 May 2020 22:14:26 -0700 Received: from userp3020.oracle.com ([156.151.31.79]) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1jeAs4-0004fx-Kn; Wed, 27 May 2020 22:14:24 -0700 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04S5Devi088773; Thu, 28 May 2020 05:14:24 GMT Received: from userp2030.oracle.com (userp2030.oracle.com [156.151.31.89]) by userp3020.oracle.com with ESMTP id 317dkvt2ae-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 28 May 2020 05:14:24 +0000 Received: from pps.filterd (userp2030.oracle.com [127.0.0.1]) by userp2030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04S5BQJ6035613; Thu, 28 May 2020 05:14:23 GMT Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by userp2030.oracle.com with ESMTP id 319y1s73ww-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 28 May 2020 05:14:23 +0000 Received: from p4fdb1ad2.dip0.t-ipconnect.de ([79.219.26.210] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeArb-0002VB-At; Thu, 28 May 2020 05:13:55 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Date: Thu, 28 May 2020 07:12:31 +0200 Message-Id: <20200528051236.620353-24-hch@lst.de> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200528051236.620353-1-hch@lst.de> References: <20200528051236.620353-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-PDR: PASS X-Source-IP: 198.137.202.133 X-ServerName: bombadil.infradead.org X-Proofpoint-SPF-Result: None X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9634 signatures=668686 X-Proofpoint-Spam-Details: rule=tap_notspam policy=tap score=0 lowpriorityscore=0 mlxlogscore=999 priorityscore=120 impostorscore=0 phishscore=0 bulkscore=0 malwarescore=0 adultscore=0 spamscore=0 clxscore=238 cotscore=-2147483648 suspectscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005280029 X-Spam: Clean X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 malwarescore=0 bulkscore=0 spamscore=0 suspectscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005280030 Cc: linux-cifs@vger.kernel.org, rds-devel@oss.oracle.com, cluster-devel@redhat.com, Hideaki YOSHIFUJI , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, Jon Maloy , linux-rdma@vger.kernel.org, Eric Dumazet , target-devel@vger.kernel.org, tipc-discussion@lists.sourceforge.net, linux-nfs@vger.kernel.org, Ying Xue , Alexey Kuznetsov , ceph-devel@vger.kernel.org, linux-afs@lists.infradead.org, ocfs2-devel@oss.oracle.com, drbd-dev@lists.linbit.com Subject: [Ocfs2-devel] [PATCH 23/28] ipv6: add ip6_sock_set_v6only X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9634 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 phishscore=0 malwarescore=0 mlxlogscore=999 adultscore=0 suspectscore=0 bulkscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005280030 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9634 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxscore=0 priorityscore=1501 spamscore=0 cotscore=-2147483648 suspectscore=0 phishscore=0 clxscore=1034 mlxlogscore=999 bulkscore=0 adultscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005280029 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 | 11 +++++++++++ net/ipv6/ip6_udp_tunnel.c | 5 +---- net/sunrpc/svcsock.c | 6 +----- 3 files changed, 13 insertions(+), 9 deletions(-) diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 39a00d3ef5e22..9b91188c9a74c 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -1177,4 +1177,15 @@ 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); + +static inline int ip6_sock_set_v6only(struct sock *sk) +{ + if (inet_sk(sk)->inet_num) + return -EINVAL; + lock_sock(sk); + sk->sk_ipv6only = true; + release_sock(sk); + return 0; +} + #endif /* _NET_IPV6_H */ diff --git a/net/ipv6/ip6_udp_tunnel.c b/net/ipv6/ip6_udp_tunnel.c index 6523609516d25..2e0ad1bc84a83 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); if (err < 0) goto error; } diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c index 7a805d165689c..a391892977cd2 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)); - + ip6_sock_set_v6only(sock->sk); if (type == SOCK_STREAM) sock->sk->sk_reuse = SK_CAN_REUSE; /* allow address reuse */ error = kernel_bind(sock, sin, len);