From patchwork Mon Jul 20 12:47:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11673713 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 A39CB1392 for ; Mon, 20 Jul 2020 12:49:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C0CF22C9D for ; Mon, 20 Jul 2020 12:49:02 +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="Wkzy9EJD" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728647AbgGTMs5 (ORCPT ); Mon, 20 Jul 2020 08:48:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40640 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729253AbgGTMsx (ORCPT ); Mon, 20 Jul 2020 08:48:53 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BA45C061794; Mon, 20 Jul 2020 05:48:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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=XFgdEhn2vLmThLShP1o7gYGDYV3zgNoNH4PA05fsJS8=; b=Wkzy9EJDG4l7lgluY2A4k1gkzk dHXnUTdC/Nhh1WIcSPASdHtlIMwcRj8ffKYWkm/ND2HeOF9pwAr6W0kFtq++kQkmsFbDKkGph29TG mLxMkHP/KhFXpyNQnHvKtgkdUiKmemflpUt39osjFaqvvF/EFGdVXCXHfwu5HIh/q2IOaC35QPVM6 DUvpfkRYCdoLNG0Zz72Bb7JVAWpDKbATSgbOwnqvggK4gHxNhJVnpZGhEV0mRP+mMAL7ub9tuTAvU xQHw+/y8tgti6Qyzdrzl2hUUfwrzU7JnbzMGgsdbBO4RfqCvdlUEEmDH0RkjxN+ICaczwlL2GumfX JoHLgVXw==; Received: from [2001:4bb8:105:4a81:2a8f:15b1:2c3:7be7] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jxVDk-0004dj-69; Mon, 20 Jul 2020 12:48:42 +0000 From: Christoph Hellwig To: "David S. Miller" , Jakub Kicinski , Alexei Starovoitov , Daniel Borkmann , Alexey Kuznetsov , Hideaki YOSHIFUJI , Eric Dumazet Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, linux-sctp@vger.kernel.org, linux-hams@vger.kernel.org, linux-bluetooth@vger.kernel.org, bridge@lists.linux-foundation.org, linux-can@vger.kernel.org, dccp@vger.kernel.org, linux-decnet-user@lists.sourceforge.net, linux-wpan@vger.kernel.org, linux-s390@vger.kernel.org, mptcp@lists.01.org, lvs-devel@vger.kernel.org, rds-devel@oss.oracle.com, linux-afs@lists.infradead.org, tipc-discussion@lists.sourceforge.net, linux-x25@vger.kernel.org Subject: [PATCH 22/24] net/tcp: switch ->md5_parse to sockptr_t Date: Mon, 20 Jul 2020 14:47:35 +0200 Message-Id: <20200720124737.118617-23-hch@lst.de> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200720124737.118617-1-hch@lst.de> References: <20200720124737.118617-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-wpan-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org Pass a sockptr_t to prepare for set_fs-less handling of the kernel pointer from bpf-cgroup. Signed-off-by: Christoph Hellwig --- include/net/tcp.h | 2 +- net/ipv4/tcp.c | 3 ++- net/ipv4/tcp_ipv4.c | 4 ++-- net/ipv6/tcp_ipv6.c | 4 ++-- 4 files changed, 7 insertions(+), 6 deletions(-) diff --git a/include/net/tcp.h b/include/net/tcp.h index 9f7f7c0c110451..e3c8e1d820214c 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -2002,7 +2002,7 @@ struct tcp_sock_af_ops { const struct sk_buff *skb); int (*md5_parse)(struct sock *sk, int optname, - char __user *optval, + sockptr_t optval, int optlen); #endif }; diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 58ede3d62b2e2c..49bf15c27deac7 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3249,7 +3249,8 @@ static int do_tcp_setsockopt(struct sock *sk, int level, #ifdef CONFIG_TCP_MD5SIG case TCP_MD5SIG: case TCP_MD5SIG_EXT: - err = tp->af_specific->md5_parse(sk, optname, optval, optlen); + err = tp->af_specific->md5_parse(sk, optname, + USER_SOCKPTR(optval), optlen); break; #endif case TCP_USER_TIMEOUT: diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index cd81b6e04efbfa..a03e70b3af2e6c 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1194,7 +1194,7 @@ static void tcp_clear_md5_list(struct sock *sk) } static int tcp_v4_parse_md5_keys(struct sock *sk, int optname, - char __user *optval, int optlen) + sockptr_t optval, int optlen) { struct tcp_md5sig cmd; struct sockaddr_in *sin = (struct sockaddr_in *)&cmd.tcpm_addr; @@ -1205,7 +1205,7 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, int optname, if (optlen < sizeof(cmd)) return -EINVAL; - if (copy_from_user(&cmd, optval, sizeof(cmd))) + if (copy_from_sockptr(&cmd, optval, sizeof(cmd))) return -EFAULT; if (sin->sin_family != AF_INET) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index c34b7834fd84a8..305870a72352d6 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -567,7 +567,7 @@ static struct tcp_md5sig_key *tcp_v6_md5_lookup(const struct sock *sk, } static int tcp_v6_parse_md5_keys(struct sock *sk, int optname, - char __user *optval, int optlen) + sockptr_t optval, int optlen) { struct tcp_md5sig cmd; struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)&cmd.tcpm_addr; @@ -577,7 +577,7 @@ static int tcp_v6_parse_md5_keys(struct sock *sk, int optname, if (optlen < sizeof(cmd)) return -EINVAL; - if (copy_from_user(&cmd, optval, sizeof(cmd))) + if (copy_from_sockptr(&cmd, optval, sizeof(cmd))) return -EFAULT; if (sin6->sin6_family != AF_INET6)