Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754646AbdLGN6c (ORCPT ); Thu, 7 Dec 2017 08:58:32 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:32812 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754414AbdLGNAj (ORCPT ); Thu, 7 Dec 2017 08:00:39 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andreas Schultz , Harald Welte , Pablo Neira Ayuso , "David S. Miller" , Sasha Levin Subject: [PATCH 4.9 077/109] gtp: clear DF bit on GTP packet tx Date: Thu, 7 Dec 2017 13:57:01 +0100 Message-Id: <20171207125643.495590362@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171207125634.631485452@linuxfoundation.org> References: <20171207125634.631485452@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1211 Lines: 38 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andreas Schultz [ Upstream commit c6ce1d08eede4c2968ed08aafa3165e8e183c5a1 ] 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 Acked-by: Harald Welte Acked-by: Pablo Neira Ayuso Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/gtp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -612,7 +612,7 @@ static netdev_tx_t gtp_dev_xmit(struct s 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;