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=-4.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 2C284C11F69 for ; Thu, 1 Jul 2021 03:03:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05F9161477 for ; Thu, 1 Jul 2021 03:03:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238718AbhGADGK (ORCPT ); Wed, 30 Jun 2021 23:06:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51702 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238056AbhGADGI (ORCPT ); Wed, 30 Jun 2021 23:06:08 -0400 Received: from mail-oo1-xc2e.google.com (mail-oo1-xc2e.google.com [IPv6:2607:f8b0:4864:20::c2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC211C061756; Wed, 30 Jun 2021 20:03:38 -0700 (PDT) Received: by mail-oo1-xc2e.google.com with SMTP id d1-20020a4ad3410000b029024c4d2ea72aso1200791oos.4; Wed, 30 Jun 2021 20:03:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=miX+HUGNry9LPmmE01qiRM28/4hRXxW/rSyq1X5RMvA=; b=rrcLIpMYDVHo8YMMCg+C5g3Y2pyHlfkH9Yasw0GfBTJIJG5VkNl/+aT2dHxvcG0KsZ 58ARZrBU4ydpsDCtR+e6MwvgQ08Y4ibgDTktIZ6qHftwV2zNobAZm0Ke0KvdEBDdjJeA FHi5esfucH4d0STJBO/p9uYNtDeepR4HxMhnAO9G50xqtpMaHe1BQZJim6ZRYeaxZBBO 5kRB5Tb5rDsvbJJzpnY68MmDDr1K4Gm+PicNXhDZHyx58gvPWIoraS5uflsiArm/o70G 4W+fctfsQQVHlRXh8/PsKiaQdBuom0cXbMOnGCwKcxokZ/O5i/M++eR3WO81Sz17gBBN e1Eg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=miX+HUGNry9LPmmE01qiRM28/4hRXxW/rSyq1X5RMvA=; b=sszzhreMmEWVS9BKM3YqLNH/5aODVbHrKDlwJZDdp0AKdkUdl4xztsWR16pBr9W1Lf 3Cn8X0Ij5hcMISSC1C4DFvy5L52S395euWAogXAdVFQEMWqsmYGUmKJOrLtLjzUU34yh bkzCzcrPJ/v66Tw7IQuHc9JsbGgLbQTjNUiEF79abLCQfltJKhDA7j2RrynqGn7CmUOT 1B3KDfpACiBIs0VVsPRFzvDHSpDDKz3aFxXDR8pHd8lqCxZYT5rfoQwxHTGDbIaqnxg/ zvkmb/YBrYn328eq+H2CHy9k7fvx1FrmgK2h3V7JNUjOF+UJA+uxBAlsaB3HXvr/f8up A+Wg== X-Gm-Message-State: AOAM5310yDFof1QcZkkijPdaXWMc4Gj3rMlaI+NXN+be9URDnOUu5Txj FhYTvoiCOmTY3heDpoQ4baY= X-Google-Smtp-Source: ABdhPJxNS3uM9ZSKZcUsFOgGvl15CC7VjYn6u1n4W3yLMranX1a/tzUlEv8HZdfoRQfVP/XaZUYLaA== X-Received: by 2002:a4a:cb06:: with SMTP id r6mr11136256ooq.15.1625108618137; Wed, 30 Jun 2021 20:03:38 -0700 (PDT) Received: from Davids-MacBook-Pro.local ([8.48.134.38]) by smtp.googlemail.com with ESMTPSA id c34sm5236974otu.42.2021.06.30.20.03.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 30 Jun 2021 20:03:37 -0700 (PDT) Subject: Re: [PATCH] net: ipv6: don't generate link-local address in any addr_gen_mode To: Rocco Yue , "David S . Miller" , Hideaki YOSHIFUJI , David Ahern , Jakub Kicinski , Matthias Brugger Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, wsd_upstream@mediatek.com, Rocco.Yue@gmail.com, chao.song@mediatek.com, kuohong.wang@mediatek.com, zhuoliang.zhang@mediatek.com References: <20210701015940.29726-1-rocco.yue@mediatek.com> From: David Ahern Message-ID: <3c0e5c52-4204-ae1e-526a-5f3a5c9738c2@gmail.com> Date: Wed, 30 Jun 2021 21:03:35 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210701015940.29726-1-rocco.yue@mediatek.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/30/21 7:59 PM, Rocco Yue wrote: > This patch provides an ipv6 proc file named > "disable_gen_linklocal_addr", its absolute path is as follows: > "/proc/sys/net/ipv6/conf//disable_gen_linklocal_addr". > > When the "disable_gen_linklocal_addr" value of a device is 1, > it means that this device does not need the Linux kernel to > automatically generate the ipv6 link-local address no matter > which IN6_ADDR_GEN_MODE is used. > doesn't this duplicate addr_gen_mode == 1 == IN6_ADDR_GEN_MODE_NONE?