From patchwork Tue Jan 24 15:28:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Schultz X-Patchwork-Id: 719191 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3v7Bt64pzqz9sxS for ; Wed, 25 Jan 2017 02:29:02 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751178AbdAXP3A (ORCPT ); Tue, 24 Jan 2017 10:29:00 -0500 Received: from mail.tpip.net ([92.43.49.48]:60589 "EHLO mail.tpip.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751115AbdAXP25 (ORCPT ); Tue, 24 Jan 2017 10:28:57 -0500 Received: from office.tpip.net (unknown [153.92.65.89]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.tpip.net (Postfix) with ESMTPS id 81D3D4F40A; Tue, 24 Jan 2017 15:28:54 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by office.tpip.net (Postfix) with ESMTP id 5A037A2CC0; Tue, 24 Jan 2017 16:28:54 +0100 (CET) Received: from office.tpip.net ([127.0.0.1]) by localhost (office.tpip.net [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id FPNwskbuM2Jo; Tue, 24 Jan 2017 16:28:54 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by office.tpip.net (Postfix) with ESMTP id F3F85A2CC3; Tue, 24 Jan 2017 16:28:53 +0100 (CET) X-Virus-Scanned: amavisd-new at tpip.net Received: from office.tpip.net ([127.0.0.1]) by localhost (office.tpip.net [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id ltZMeK6ufeOM; Tue, 24 Jan 2017 16:28:53 +0100 (CET) Received: from localhost.localdomain (pd95c9392.dip0.t-ipconnect.de [217.92.147.146]) by office.tpip.net (Postfix) with ESMTPSA id A7C10A2CC0; Tue, 24 Jan 2017 16:28:53 +0100 (CET) From: Andreas Schultz To: Pablo Neira Cc: netdev@vger.kernel.org, Lionel Gauthier , openbsc@lists.osmocom.org, Harald Welte Subject: [PATCH v2 06/18] gtp: fix cross netns recv on gtp socket Date: Tue, 24 Jan 2017 16:28:36 +0100 Message-Id: <20170124152848.6120-7-aschultz@tpip.net> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170124152848.6120-1-aschultz@tpip.net> References: <20170124152848.6120-1-aschultz@tpip.net> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The use of the paassed through netlink src_net to check for a cross netns operation was wrong. Using the GTP socket and the GTP netdevice is always correct (even if the netdev has been moved to new netns after link creation). Remove the now obsolete net field from gtp_dev. Signed-off-by: Andreas Schultz --- drivers/net/gtp.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 7a3c5f6..bc8734b7 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -69,7 +69,6 @@ struct gtp_dev { struct socket *sock0; struct socket *sock1u; - struct net *net; struct net_device *dev; unsigned int hash_size; @@ -292,7 +291,7 @@ static int gtp_encap_recv(struct sock *sk, struct sk_buff *skb) netdev_dbg(gtp->dev, "encap_recv sk=%p\n", sk); - xnet = !net_eq(gtp->net, dev_net(gtp->dev)); + xnet = !net_eq(sock_net(sk), dev_net(gtp->dev)); switch (udp_sk(sk)->encap_type) { case UDP_ENCAP_GTP0: @@ -642,7 +641,7 @@ static void gtp_link_setup(struct net_device *dev) static int gtp_hashtable_new(struct gtp_dev *gtp, int hsize); static void gtp_hashtable_free(struct gtp_dev *gtp); static int gtp_encap_enable(struct net_device *dev, struct gtp_dev *gtp, - struct net *src_net, struct nlattr *data[]); + struct nlattr *data[]); static void gtp_encap_disable(struct gtp_dev *gtp); static int gtp_newlink(struct net *src_net, struct net_device *dev, @@ -660,7 +659,7 @@ static int gtp_newlink(struct net *src_net, struct net_device *dev, hashsize = nla_get_u32(data[IFLA_GTP_PDP_HASHSIZE]); if (data[IFLA_GTP_FD0] || data[IFLA_GTP_FD1]) { - err = gtp_encap_enable(dev, gtp, src_net, data); + err = gtp_encap_enable(dev, gtp, data); if (err < 0) goto out_err; } @@ -839,7 +838,7 @@ static struct socket *gtp_encap_enable_socket(int fd, int type, } static int gtp_encap_enable(struct net_device *dev, struct gtp_dev *gtp, - struct net *src_net, struct nlattr *data[]) + struct nlattr *data[]) { struct socket *sock0 = NULL; struct socket *sock1u = NULL; @@ -867,7 +866,6 @@ static int gtp_encap_enable(struct net_device *dev, struct gtp_dev *gtp, gtp->sock0 = sock0; gtp->sock1u = sock1u; - gtp->net = src_net; return 0; }