From patchwork Thu May 28 05:12:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11574439 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 6FA7C60D for ; Thu, 28 May 2020 05:14:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 571512084C for ; Thu, 28 May 2020 05:14:59 +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="TyyzpOSO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728265AbgE1FO3 (ORCPT ); Thu, 28 May 2020 01:14:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728235AbgE1FO1 (ORCPT ); Thu, 28 May 2020 01:14:27 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C538C08C5C3; Wed, 27 May 2020 22:14:27 -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=B8AAretIu5FmedPsdm8UByxsgeixSPHOD/FDCOuT058=; b=TyyzpOSO7/oKDZGowkS0hprG/g YGiFM+X4kmRzl761xV3iqO3ALicBOREACJGYJaiR9tGScQt0z8zG3dpyEGl53HUH8cl/ZCFfu34Ks Z2ACUovmX8WL/XYeE7ewQ0czVaH6MsErvhmxz95ozhQA8SijytgFLW7FnLrfIeBqkdrQYJnej3xty CbOt+GNZQbIIAnQH66dY6QohYOu77xVV4Tccy5bE3oy0dB6bKUysaXWiojk3dotM7Q5p0M4LceMEy fbs8470Gv0QRYpfoLCrv5343vgRATpA6CHLOIO7gpkRNrK5vmBqQ9+3+mNRQJxv7HMLbxvXh5OFED 85V2vqOQ==; 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 1jeAre-0002XI-Jl; Thu, 28 May 2020 05:13:59 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski Cc: Eric Dumazet , Alexey Kuznetsov , Hideaki YOSHIFUJI , Jon Maloy , Ying Xue , drbd-dev@lists.linbit.com, 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, ceph-devel@vger.kernel.org, rds-devel@oss.oracle.com, linux-nfs@vger.kernel.org, tipc-discussion@lists.sourceforge.net, David Howells Subject: [PATCH 24/28] ipv6: add ip6_sock_set_recverr Date: Thu, 28 May 2020 07:12:32 +0200 Message-Id: <20200528051236.620353-25-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 Sender: target-devel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: target-devel@vger.kernel.org Add a helper to directly set the IPV6_RECVERR sockopt from kernel space without going through a fake uaccess. Signed-off-by: Christoph Hellwig Reviewed-by: David Howells --- include/net/ipv6.h | 7 +++++++ net/rxrpc/local_object.c | 10 ++-------- 2 files changed, 9 insertions(+), 8 deletions(-) diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 9b91188c9a74c..49c4abf991489 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -1188,4 +1188,11 @@ static inline int ip6_sock_set_v6only(struct sock *sk) return 0; } +static inline void ip6_sock_set_recverr(struct sock *sk) +{ + lock_sock(sk); + inet6_sk(sk)->recverr = true; + release_sock(sk); +} + #endif /* _NET_IPV6_H */ diff --git a/net/rxrpc/local_object.c b/net/rxrpc/local_object.c index 6f4e6b4817cf2..c8b2097f499c0 100644 --- a/net/rxrpc/local_object.c +++ b/net/rxrpc/local_object.c @@ -107,7 +107,7 @@ static struct rxrpc_local *rxrpc_alloc_local(struct rxrpc_net *rxnet, static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net) { struct sock *usk; - int ret, opt; + int ret; _enter("%p{%d,%d}", local, local->srx.transport_type, local->srx.transport.family); @@ -157,13 +157,7 @@ static int rxrpc_open_socket(struct rxrpc_local *local, struct net *net) switch (local->srx.transport.family) { case AF_INET6: /* we want to receive ICMPv6 errors */ - opt = 1; - ret = kernel_setsockopt(local->socket, SOL_IPV6, IPV6_RECVERR, - (char *) &opt, sizeof(opt)); - if (ret < 0) { - _debug("setsockopt failed"); - goto error; - } + ip6_sock_set_recverr(local->socket->sk); /* Fall through and set IPv4 options too otherwise we don't get * errors from IPv4 packets sent through the IPv6 socket.