From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,LOTS_OF_MONEY, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C9C0C432C0 for ; Tue, 3 Dec 2019 22:55:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5F30620674 for ; Tue, 3 Dec 2019 22:55:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575413725; bh=1iCYYouaItMbER6bksKCfjllwJWyolJzIHzovLyWJVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KrXDIespdRYfpvOz72PqflgrRcHYy5Tf1huh4THnrhIL0SJWa6vCyMas5EXTHkty9 cHRu7pz5/g2clWbVK9g/haWMb3IgiBRJPUhnv5kXiUmqvQ1+H2sjP0Ti3HJDlDXOpJ Ep/rThuy/FPr7gORReNSn/X05UexX4Dlj2jOK2bk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730276AbfLCWzY (ORCPT ); Tue, 3 Dec 2019 17:55:24 -0500 Received: from mail.kernel.org ([198.145.29.99]:49644 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730267AbfLCWzU (ORCPT ); Tue, 3 Dec 2019 17:55:20 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3DCA320674; Tue, 3 Dec 2019 22:55:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575413719; bh=1iCYYouaItMbER6bksKCfjllwJWyolJzIHzovLyWJVc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dT6sV43npYFqeoVCxZ4MUDdnK5OYtsoXdXXLRMnSwwPquK6XzHOknZMD9A3Y1y06r yqJKQKR0zX0CeVIFqd25xqH7TFawM2MTD4P8XY6e8zI3vCrfDnpzmXre1wxl+4Xch/ kjFbFxALL4dyCaklIAEyzLgGLbZZnD2m70q+sksQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Lorenzo Bianconi , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 236/321] net: ip_gre: do not report erspan_ver for gre or gretap Date: Tue, 3 Dec 2019 23:35:02 +0100 Message-Id: <20191203223439.408664471@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191203223427.103571230@linuxfoundation.org> References: <20191203223427.103571230@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Lorenzo Bianconi [ Upstream commit 2bdf700e538828d6456150b9319e5f689b062d54 ] Report erspan version field to userspace in ipgre_fill_info just for erspan tunnels. The issue can be triggered with the following reproducer: $ip link add name gre1 type gre local 192.168.0.1 remote 192.168.1.1 $ip link set dev gre1 up $ip -d link sh gre1 13: gre1@NONE: mtu 1476 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/gre 192.168.0.1 peer 192.168.1.1 promiscuity 0 minmtu 0 maxmtu 0 gre remote 192.168.1.1 local 192.168.0.1 ttl inherit erspan_ver 0 addrgenmode eui64 numtxqueues 1 numrxqueues 1 Fixes: f551c91de262 ("net: erspan: introduce erspan v2 for ip_gre") Signed-off-by: Lorenzo Bianconi Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/ipv4/ip_gre.c | 33 +++++++++++++++++---------------- 1 file changed, 17 insertions(+), 16 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 681276111310b..a3f77441f3e69 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1466,9 +1466,23 @@ static int ipgre_fill_info(struct sk_buff *skb, const struct net_device *dev) struct ip_tunnel_parm *p = &t->parms; __be16 o_flags = p->o_flags; - if ((t->erspan_ver == 1 || t->erspan_ver == 2) && - !t->collect_md) - o_flags |= TUNNEL_KEY; + if (t->erspan_ver == 1 || t->erspan_ver == 2) { + if (!t->collect_md) + o_flags |= TUNNEL_KEY; + + if (nla_put_u8(skb, IFLA_GRE_ERSPAN_VER, t->erspan_ver)) + goto nla_put_failure; + + if (t->erspan_ver == 1) { + if (nla_put_u32(skb, IFLA_GRE_ERSPAN_INDEX, t->index)) + goto nla_put_failure; + } else { + if (nla_put_u8(skb, IFLA_GRE_ERSPAN_DIR, t->dir)) + goto nla_put_failure; + if (nla_put_u16(skb, IFLA_GRE_ERSPAN_HWID, t->hwid)) + goto nla_put_failure; + } + } if (nla_put_u32(skb, IFLA_GRE_LINK, p->link) || nla_put_be16(skb, IFLA_GRE_IFLAGS, @@ -1504,19 +1518,6 @@ static int ipgre_fill_info(struct sk_buff *skb, const struct net_device *dev) goto nla_put_failure; } - if (nla_put_u8(skb, IFLA_GRE_ERSPAN_VER, t->erspan_ver)) - goto nla_put_failure; - - if (t->erspan_ver == 1) { - if (nla_put_u32(skb, IFLA_GRE_ERSPAN_INDEX, t->index)) - goto nla_put_failure; - } else if (t->erspan_ver == 2) { - if (nla_put_u8(skb, IFLA_GRE_ERSPAN_DIR, t->dir)) - goto nla_put_failure; - if (nla_put_u16(skb, IFLA_GRE_ERSPAN_HWID, t->hwid)) - goto nla_put_failure; - } - return 0; nla_put_failure: -- 2.20.1