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 88A4BCCA492 for ; Tue, 5 Jul 2022 12:24:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236944AbiGEMW1 (ORCPT ); Tue, 5 Jul 2022 08:22:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237827AbiGEMTv (ORCPT ); Tue, 5 Jul 2022 08:19:51 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 449C61E3DD; Tue, 5 Jul 2022 05:16:21 -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 80074619B9; Tue, 5 Jul 2022 12:16:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88FB8C341C7; Tue, 5 Jul 2022 12:16:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1657023379; bh=0K93LLavEfQYsy3uxPhTBfrPbOOzfUMfmuR5iFYW/uU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dFu/gbbFsWg3PcAE5cwZ2bcF7pAbMviu1LYeC9rseZ+JbVEb0WK1VMZsXjjVMZTqR yEBiFE/JFABiVQ4WsrzeX7EORwtKZGnpxeOnWGO9U8cbrYdelEQNQhauvtz2++NhuY zucdnJEeGRnysHEqXQPJN2Na2cEb9G3du/ESIvBU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, stable@kernel.org, David Forster , Siwar Zitouni , Nicolas Dichtel , David Ahern , Jakub Kicinski Subject: [PATCH 5.18 007/102] ipv6: take care of disable_policy when restoring routes Date: Tue, 5 Jul 2022 13:57:33 +0200 Message-Id: <20220705115618.623537187@linuxfoundation.org> X-Mailer: git-send-email 2.37.0 In-Reply-To: <20220705115618.410217782@linuxfoundation.org> References: <20220705115618.410217782@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: stable@vger.kernel.org From: Nicolas Dichtel commit 3b0dc529f56b5f2328244130683210be98f16f7f upstream. When routes corresponding to addresses are restored by fixup_permanent_addr(), the dst_nopolicy parameter was not set. The typical use case is a user that configures an address on a down interface and then put this interface up. Let's take care of this flag in addrconf_f6i_alloc(), so that every callers benefit ont it. CC: stable@kernel.org CC: David Forster Fixes: df789fe75206 ("ipv6: Provide ipv6 version of "disable_policy" sysctl") Reported-by: Siwar Zitouni Signed-off-by: Nicolas Dichtel Reviewed-by: David Ahern Link: https://lore.kernel.org/r/20220623120015.32640-1-nicolas.dichtel@6wind.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- net/ipv6/addrconf.c | 4 ---- net/ipv6/route.c | 9 ++++++++- 2 files changed, 8 insertions(+), 5 deletions(-) --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1109,10 +1109,6 @@ ipv6_add_addr(struct inet6_dev *idev, st goto out; } - if (net->ipv6.devconf_all->disable_policy || - idev->cnf.disable_policy) - f6i->dst_nopolicy = true; - neigh_parms_data_state_setall(idev->nd_parms); ifa->addr = *cfg->pfx; --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -4565,8 +4565,15 @@ struct fib6_info *addrconf_f6i_alloc(str } f6i = ip6_route_info_create(&cfg, gfp_flags, NULL); - if (!IS_ERR(f6i)) + if (!IS_ERR(f6i)) { f6i->dst_nocount = true; + + if (!anycast && + (net->ipv6.devconf_all->disable_policy || + idev->cnf.disable_policy)) + f6i->dst_nopolicy = true; + } + return f6i; }