From patchwork Tue Jan 24 17:23:59 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Schultz X-Patchwork-Id: 719270 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 3v7FR04xXtz9s3T for ; Wed, 25 Jan 2017 04:24:12 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750809AbdAXRYK (ORCPT ); Tue, 24 Jan 2017 12:24:10 -0500 Received: from mail.tpip.net ([92.43.49.48]:38763 "EHLO mail.tpip.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750757AbdAXRYI (ORCPT ); Tue, 24 Jan 2017 12:24:08 -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 EEF854F406; Tue, 24 Jan 2017 17:24:06 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by office.tpip.net (Postfix) with ESMTP id C5692A2CD8; Tue, 24 Jan 2017 18:24:06 +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 6NvDwhCFR0A7; Tue, 24 Jan 2017 18:24:06 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by office.tpip.net (Postfix) with ESMTP id 74F4CA2CC7; Tue, 24 Jan 2017 18:24:06 +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 2CqQO8pg0Len; Tue, 24 Jan 2017 18:24:06 +0100 (CET) Received: from localhost.localdomain (pd95c9392.dip0.t-ipconnect.de [217.92.147.146]) by office.tpip.net (Postfix) with ESMTPSA id 29578A2CC0; Tue, 24 Jan 2017 18:24:06 +0100 (CET) From: Andreas Schultz To: Pablo Neira Cc: netdev@vger.kernel.org, Lionel Gauthier , openbsc@lists.osmocom.org, Harald Welte Subject: [PATCH 2/5] gtp: clear DF bit on GTP packet tx Date: Tue, 24 Jan 2017 18:23:59 +0100 Message-Id: <20170124172402.12096-3-aschultz@tpip.net> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170124172402.12096-1-aschultz@tpip.net> References: <20170124172402.12096-1-aschultz@tpip.net> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org 3GPP TS 29.281 and 3GPP TS 29.060 imply that GTP-U packets should be sent with the DF bit cleared. For example 3GPP TS 29.060, Release 8, Section 13.2.2: > Backbone router: Any router in the backbone may fragment the GTP > packet if needed, according to IPv4. Signed-off-by: Andreas Schultz --- drivers/net/gtp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 7580ccc..1df54d6 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -612,7 +612,7 @@ static netdev_tx_t gtp_dev_xmit(struct sk_buff *skb, struct net_device *dev) pktinfo.fl4.saddr, pktinfo.fl4.daddr, pktinfo.iph->tos, ip4_dst_hoplimit(&pktinfo.rt->dst), - htons(IP_DF), + 0, pktinfo.gtph_port, pktinfo.gtph_port, true, false); break;