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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,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 6979CCA9EB9 for ; Sat, 26 Oct 2019 13:30:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 366D3206DD for ; Sat, 26 Oct 2019 13:30:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572096627; bh=CW0U6OxZeP57JfVw3yQhUtuFdKqeIEOgsaW8QmdA7mo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=M5MMZNoaLh4iVRcVpipHQpQZIKQlRhstptx0vcUWJmnBPx2gzhXp3fueHjr2KZfe3 nR+3XXpVfR24iMmQzFuRh2ueiXpwc3jCjtOZO8HHsVEbAid1KUCciX70USP3IgDRIL xyD/nDJkte66pOoOx1eWxc/KtcdZ5StKLrvAJhIU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727381AbfJZNa0 (ORCPT ); Sat, 26 Oct 2019 09:30:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:41722 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728451AbfJZNTt (ORCPT ); Sat, 26 Oct 2019 09:19:49 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C4CF521E6F; Sat, 26 Oct 2019 13:19:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1572095989; bh=CW0U6OxZeP57JfVw3yQhUtuFdKqeIEOgsaW8QmdA7mo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=T2Pm5zT2tUYJbRjiq77osSOFSUQhJ66sCFfh8aOYvMwVxPwpBx7L3Y2n9KR00YGzu gmSHgd4WNuYLiRYKGO6PMx6DweUo7ZKiO2xNo+wl9zJefA4weP0c0JgYBrG+uCLXUU c5V1rcSN3ofv/Rdjvhbb0kJA9jKbbrMiyqWY+1QY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Haishuang Yan , William Tu , Jakub Kicinski , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 22/59] ip6erspan: remove the incorrect mtu limit for ip6erspan Date: Sat, 26 Oct 2019 09:18:33 -0400 Message-Id: <20191026131910.3435-22-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191026131910.3435-1-sashal@kernel.org> References: <20191026131910.3435-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Haishuang Yan [ Upstream commit 4123f637a5129470ff9d3cb00a5a4e213f2e15cc ] ip6erspan driver calls ether_setup(), after commit 61e84623ace3 ("net: centralize net_device min/max MTU checking"), the range of mtu is [min_mtu, max_mtu], which is [68, 1500] by default. It causes the dev mtu of the erspan device to not be greater than 1500, this limit value is not correct for ip6erspan tap device. Fixes: 61e84623ace3 ("net: centralize net_device min/max MTU checking") Signed-off-by: Haishuang Yan Acked-by: William Tu Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- net/ipv6/ip6_gre.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index a23516e220569..d16b19885d993 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -2218,6 +2218,7 @@ static void ip6erspan_tap_setup(struct net_device *dev) { ether_setup(dev); + dev->max_mtu = 0; dev->netdev_ops = &ip6erspan_netdev_ops; dev->needs_free_netdev = true; dev->priv_destructor = ip6gre_dev_free; -- 2.20.1