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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,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 6522EC4321E for ; Mon, 10 Sep 2018 14:20:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5895520870 for ; Mon, 10 Sep 2018 14:20:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5895520870 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=cmss.chinamobile.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728740AbeIJTOk (ORCPT ); Mon, 10 Sep 2018 15:14:40 -0400 Received: from cmccmta1.chinamobile.com ([221.176.66.79]:8199 "EHLO cmccmta1.chinamobile.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728110AbeIJTOk (ORCPT ); Mon, 10 Sep 2018 15:14:40 -0400 Received: from spf.mail.chinamobile.com (unknown[172.16.121.17]) by rmmx-syy-dmz-app03-12003 (RichMail) with SMTP id 2ee35b967d9aae2-5ed14; Mon, 10 Sep 2018 22:20:10 +0800 (CST) X-RM-TRANSID: 2ee35b967d9aae2-5ed14 X-RM-TagInfo: emlType=0 X-RM-SPAM-FLAG: 00000000 Received: from localhost (unknown[223.105.0.240]) by rmsmtp-syy-appsvr09-12009 (RichMail) with SMTP id 2ee95b967d98a76-e5c3b; Mon, 10 Sep 2018 22:20:09 +0800 (CST) X-RM-TRANSID: 2ee95b967d98a76-e5c3b From: Haishuang Yan To: "David S. Miller" , Alexey Kuznetsov Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Haishuang Yan , William Tu Subject: [PATCH 1/2] erspan: return PACKET_REJECT when the appropriate tunnel is not found Date: Mon, 10 Sep 2018 22:19:47 +0800 Message-Id: <1536589188-27550-1-git-send-email-yanhaishuang@cmss.chinamobile.com> X-Mailer: git-send-email 1.8.3.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If erspan tunnel hasn't been established, we'd better send icmp port unreachable message after receive erspan packets. Fixes: 84e54fe0a5ea ("gre: introduce native tunnel support for ERSPAN") Cc: William Tu Signed-off-by: Haishuang Yan --- net/ipv4/ip_gre.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index ae714ae..85a714d 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -328,6 +328,8 @@ static int erspan_rcv(struct sk_buff *skb, struct tnl_ptk_info *tpi, ip_tunnel_rcv(tunnel, skb, tpi, tun_dst, log_ecn_error); return PACKET_RCVD; } + return PACKET_REJECT; + drop: kfree_skb(skb); return PACKET_RCVD; -- 1.8.3.1