From patchwork Wed May 13 06:26:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11544865 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 B48C681 for ; Wed, 13 May 2020 06:29:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D789206B7 for ; Wed, 13 May 2020 06:29:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="mfGOYIKe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732226AbgEMG3L (ORCPT ); Wed, 13 May 2020 02:29:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46226 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732222AbgEMG3J (ORCPT ); Wed, 13 May 2020 02:29:09 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9E3C6C061A0C; Tue, 12 May 2020 23:29:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description; bh=dCMTZO0AdXjanUxIKH6Ern8zD2+Bu/Awr8QhCk3IXDc=; b=mfGOYIKeamT2jkXYkmTd0SjiaE ivFhJZpttZo8rrFan2BdS0MPg3NgLaDTAXqwrnyNLNtg40m4gDO88/m5t/fydFMRS3h9Tl1v5i9CN S7tMbeb/KfoSzluyFajTeL3ImS2ticzZMcMkDz29xbj0tIUCgYzABdLklKDBQ11zhLGwh7m+dFEiR jjv7YN33T71S920gPnhbcZMfA/WYXo2SqDrwjk8Y7C7+ECOts9ho2eutNZ9VYrdJJOZI9nMOEeCho DXMniEsj3nA8965ed0T870qPya9DyyYccqlB3qnYYvZcQHmYzvwxtQAk8NaylIGq6sGmO/dd0FiGp zqi6GGrQ==; 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 1jYksC-0004vd-Gn; Wed, 13 May 2020 06:28:08 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Cc: Eric Dumazet , Alexey Kuznetsov , Hideaki YOSHIFUJI , Vlad Yasevich , Neil Horman , Marcelo Ricardo Leitner , Jon Maloy , Ying Xue , drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-nvme@lists.infradead.org, target-devel@vger.kernel.org, linux-afs@lists.infradead.org, linux-cifs@vger.kernel.org, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, netdev@vger.kernel.org, linux-sctp@vger.kernel.org, ceph-devel@vger.kernel.org, rds-devel@oss.oracle.com, linux-nfs@vger.kernel.org Subject: [PATCH 25/33] ipv6: add ip6_sock_set_recvpktinfo Date: Wed, 13 May 2020 08:26:40 +0200 Message-Id: <20200513062649.2100053-26-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-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-cifs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-cifs@vger.kernel.org Add a helper to directly set the IPV6_RECVPKTINFO sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig --- include/net/ipv6.h | 1 + net/ipv6/ipv6_sockglue.c | 8 ++++++++ net/sunrpc/svcsock.c | 11 +++-------- 3 files changed, 12 insertions(+), 8 deletions(-) diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 04b2bc1935054..170872bc4e960 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -1178,5 +1178,6 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, int ip6_sock_set_v6only(struct sock *sk, bool val); void ip6_sock_set_recverr(struct sock *sk, bool val); int ip6_sock_set_addr_preferences(struct sock *sk, bool val); +void ip6_sock_set_recvpktinfo(struct sock *sk, bool val); #endif /* _NET_IPV6_H */ diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index c23d42e809d7e..d60adb018d71c 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -225,6 +225,14 @@ int ip6_sock_set_addr_preferences(struct sock *sk, bool val) } EXPORT_SYMBOL(ip6_sock_set_addr_preferences); +void ip6_sock_set_recvpktinfo(struct sock *sk, bool val) +{ + lock_sock(sk); + inet6_sk(sk)->rxopt.bits.rxinfo = val; + release_sock(sk); +} +EXPORT_SYMBOL(ip6_sock_set_recvpktinfo); + 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 7fa7fedec3c5a..7cf8389b6f46f 100644 --- a/net/sunrpc/svcsock.c +++ b/net/sunrpc/svcsock.c @@ -595,8 +595,6 @@ static struct svc_xprt_class svc_udp_class = { static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv) { - int err, level, optname, one = 1; - svc_xprt_init(sock_net(svsk->sk_sock->sk), &svc_udp_class, &svsk->sk_xprt, serv); clear_bit(XPT_CACHE_AUTH, &svsk->sk_xprt.xpt_flags); @@ -617,17 +615,14 @@ static void svc_udp_init(struct svc_sock *svsk, struct svc_serv *serv) switch (svsk->sk_sk->sk_family) { case AF_INET: ip_sock_set_pktinfo(svsk->sk_sock->sk, true); - return; + break; case AF_INET6: - level = SOL_IPV6; - optname = IPV6_RECVPKTINFO; + if (IS_REACHABLE(CONFIG_IPV6)) + ip6_sock_set_recvpktinfo(svsk->sk_sock->sk, true); break; default: BUG(); } - err = kernel_setsockopt(svsk->sk_sock, level, optname, - (char *)&one, sizeof(one)); - dprintk("svc: kernel_setsockopt returned %d\n", err); } /*