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 A065BC433FE for ; Mon, 30 May 2022 14:48:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233619AbiE3Osz (ORCPT ); Mon, 30 May 2022 10:48:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40472 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240054AbiE3O2U (ORCPT ); Mon, 30 May 2022 10:28:20 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D8C12A26C; Mon, 30 May 2022 06:51:37 -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 9FC9660FE3; Mon, 30 May 2022 13:51:36 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0F05C385B8; Mon, 30 May 2022 13:51:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653918696; bh=MxBRfXlXQLUT75soDSKGi1x1t5WHTACug5T0lRzTfbk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A/zQZvJ18qcsXbrUQ+h+/zMDdpd9envwEV44wPvLjgtMzg7X0VxAmrRPLWAvQlobm y1vkoqaRb7TfMvpSxw0/0LU2MdUwP/KxUhtY7Nk4RWFgA1XiOTmoKDmtjHe/CjTV5I 8zTD9G5jxNdYQ40TVma+FlfBAubnXLMA18ZEhbOQqaDqhdR2s6zrz+UB2WAMT9u3ho uo+DI+gqdGP9wXEOjIKux57bQHPN+eh2wL5L0QhRqi+dIINJnfkXLN3H1f7WUOuFMV pu+cjuOGVji4ZIotWbVuZ3ACLCr4TyoQTu5e5f/8mrJkTq9GT2D6A5Aa+Pe9sBqu6E xyC7OAE0HAdaA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: jianghaoran , Jakub Kicinski , Sasha Levin , davem@davemloft.net, yoshfuji@linux-ipv6.org, dsahern@kernel.org, edumazet@google.com, pabeni@redhat.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 15/29] ipv6: Don't send rs packets to the interface of ARPHRD_TUNNEL Date: Mon, 30 May 2022 09:50:42 -0400 Message-Id: <20220530135057.1937286-15-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220530135057.1937286-1-sashal@kernel.org> References: <20220530135057.1937286-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 09807202bd1c..0d3e76b160a5 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4058,7 +4058,8 @@ 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