From patchwork Thu Jan 26 15:11:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Schultz X-Patchwork-Id: 720195 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.osmocom.org (lists.osmocom.org [144.76.43.76]) by ozlabs.org (Postfix) with ESMTP id 3v8QPD68K1z9rxv for ; Fri, 27 Jan 2017 02:11:44 +1100 (AEDT) Received: from lists.osmocom.org (lists.osmocom.org [144.76.43.76]) by lists.osmocom.org (Postfix) with ESMTP id 7EC9D29933; Thu, 26 Jan 2017 15:11:41 +0000 (UTC) Authentication-Results: lists.osmocom.org; dmarc=none header.from=tpip.net X-Original-To: openbsc@lists.osmocom.org Delivered-To: openbsc@lists.osmocom.org Received-SPF: Pass (sender SPF authorized) identity=mailfrom; client-ip=92.43.49.48; helo=mail.tpip.net; envelope-from=aschultz@tpip.net; receiver=openbsc@lists.osmocom.org Authentication-Results: lists.osmocom.org; dmarc=none header.from=tpip.net Received: from mail.tpip.net (mail.tpip.net [92.43.49.48]) by lists.osmocom.org (Postfix) with ESMTP id 78E7C298FD for ; Thu, 26 Jan 2017 15:11:40 +0000 (UTC) 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 7B9434F405; Thu, 26 Jan 2017 15:11:39 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by office.tpip.net (Postfix) with ESMTP id D7F66A2CDA; Thu, 26 Jan 2017 16:11:39 +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 08DVYV3umfIV; Thu, 26 Jan 2017 16:11:39 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by office.tpip.net (Postfix) with ESMTP id 7D551A2CDB; Thu, 26 Jan 2017 16:11:39 +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 RqJ_xVFWZHK3; Thu, 26 Jan 2017 16:11:39 +0100 (CET) Received: from localhost.localdomain (pd95c9392.dip0.t-ipconnect.de [217.92.147.146]) by office.tpip.net (Postfix) with ESMTPSA id 3226DA2CD9; Thu, 26 Jan 2017 16:11:39 +0100 (CET) From: Andreas Schultz To: Pablo Neira Subject: [PATCH net v2 2/3] gtp: clear DF bit on GTP packet tx Date: Thu, 26 Jan 2017 16:11:33 +0100 Message-Id: <20170126151134.2892-3-aschultz@tpip.net> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20170126151134.2892-1-aschultz@tpip.net> References: <20170126151134.2892-1-aschultz@tpip.net> X-BeenThere: openbsc@lists.osmocom.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Development of OpenBSC, OsmoBSC, OsmoNITB, OsmoCSCN" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, openbsc@lists.osmocom.org, Lionel Gauthier Errors-To: openbsc-bounces@lists.osmocom.org Sender: "OpenBSC" 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. Acked-by: Harald Welte Signed-off-by: Andreas Schultz Acked-by: Pablo Neira Ayuso --- 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;