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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 E9364C04E53 for ; Wed, 15 May 2019 11:25:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BBEFA20843 for ; Wed, 15 May 2019 11:25:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557919507; bh=GlqbzxP1iKRD9SbG11QnA4E7zsVZc8ZExrGnkid4cR4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QF48Znrr3pkQquHquUa6ccRPAFowXtAhf9KCiHyYoeZIXORX9vH6QFpEDYFqFpOug RIrFp0pUqIzGdQIoPmst+eu8lf9Q7PMsuESUFkMBGCx7h52RJoMFL9nTElCGrdmL9O Y5KAuC6MjEkMI6fH3Tq1gICkIIv2/rIUK3dvQRbk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731928AbfEOLZG (ORCPT ); Wed, 15 May 2019 07:25:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:35724 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729575AbfEOLZE (ORCPT ); Wed, 15 May 2019 07:25:04 -0400 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 B76B820818; Wed, 15 May 2019 11:25:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557919504; bh=GlqbzxP1iKRD9SbG11QnA4E7zsVZc8ZExrGnkid4cR4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gI3RTzhTIULFBRkfNRCx6Qa/E1UfvJ857CS1eAatPKbf/yzy0BGedHI69H19gNB+o lKVpM2EsumyBL4093dxFXdAk+Q43lRU9cZWuw0pGEOiGeUHutZ5Ne2TWR6U/UqMMlI XLwynICkKcUag0BnqGaz4n3Vhuw+nk8gFcZOdVFw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Stephen Suryaputra , David Ahern , "David S. Miller" Subject: [PATCH 4.19 101/113] vrf: sit mtu should not be updated when vrf netdev is the link Date: Wed, 15 May 2019 12:56:32 +0200 Message-Id: <20190515090701.290309582@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190515090652.640988966@linuxfoundation.org> References: <20190515090652.640988966@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: Stephen Suryaputra [ Upstream commit ff6ab32bd4e073976e4d8797b4d514a172cfe6cb ] VRF netdev mtu isn't typically set and have an mtu of 65536. When the link of a tunnel is set, the tunnel mtu is changed from 1480 to the link mtu minus tunnel header. In the case of VRF netdev is the link, then the tunnel mtu becomes 65516. So, fix it by not setting the tunnel mtu in this case. Signed-off-by: Stephen Suryaputra Reviewed-by: David Ahern Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/sit.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/ipv6/sit.c +++ b/net/ipv6/sit.c @@ -1084,7 +1084,7 @@ static void ipip6_tunnel_bind_dev(struct if (!tdev && tunnel->parms.link) tdev = __dev_get_by_index(tunnel->net, tunnel->parms.link); - if (tdev) { + if (tdev && !netif_is_l3_master(tdev)) { int t_hlen = tunnel->hlen + sizeof(struct iphdr); dev->hard_header_len = tdev->hard_header_len + sizeof(struct iphdr);