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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71216C43334 for ; Mon, 13 Jun 2022 10:15:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241770AbiFMKPP (ORCPT ); Mon, 13 Jun 2022 06:15:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241614AbiFMKOq (ORCPT ); Mon, 13 Jun 2022 06:14:46 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0A31865E2; Mon, 13 Jun 2022 03:14:36 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CDA186149B; Mon, 13 Jun 2022 10:14:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF99DC3411C; Mon, 13 Jun 2022 10:14:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655115275; bh=08NwnF+qXnGXX79nWA1cKEM+XSZ7RbJgnHlUqUkWFRg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CxYgLUDRtkFyZlGLlVwcjVYHCtPx3kj2T9ZNPPbyiyAk7rra1NS6OMQq0qsf3erN+ DT1eb/2x9lW8VoNlxtvwbGugn7Iigl5f3LAsIzy5Dvgz0QAgUpbI3ZaR26sCgz/VxP AWnHcSDoZ9E5jCAkBeSr6ZiPTVL9ya/bY+Yt2KJc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, jianghaoran , Jakub Kicinski , Sasha Levin Subject: [PATCH 4.9 017/167] ipv6: Dont send rs packets to the interface of ARPHRD_TUNNEL Date: Mon, 13 Jun 2022 12:08:11 +0200 Message-Id: <20220613094844.943591653@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094840.720778945@linuxfoundation.org> References: <20220613094840.720778945@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: jianghaoran [ Upstream commit b52e1cce31ca721e937d517411179f9196ee6135 ] ARPHRD_TUNNEL interface can't process rs packets and will generate TX errors ex: ip tunnel add ethn mode ipip local 192.168.1.1 remote 192.168.1.2 ifconfig ethn x.x.x.x ethn: flags=209 mtu 1480 inet x.x.x.x netmask 255.255.255.255 destination x.x.x.x inet6 fe80::5efe:ac1e:3cdb prefixlen 64 scopeid 0x20 tunnel txqueuelen 1000 (IPIP Tunnel) RX packets 0 bytes 0 (0.0 B) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 0 bytes 0 (0.0 B) TX errors 3 dropped 0 overruns 0 carrier 0 collisions 0 Signed-off-by: jianghaoran Link: https://lore.kernel.org/r/20220429053802.246681-1-jianghaoran@kylinos.cn Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- net/ipv6/addrconf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 30ca73c78125..02f62253a835 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3993,7 +3993,8 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id) send_rs = send_mld && ipv6_accept_ra(ifp->idev) && ifp->idev->cnf.rtr_solicits != 0 && - (dev->flags&IFF_LOOPBACK) == 0; + (dev->flags & IFF_LOOPBACK) == 0 && + (dev->type != ARPHRD_TUNNEL); read_unlock_bh(&ifp->idev->lock); /* While dad is in progress mld report's source address is in6_addrany. -- 2.35.1