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 A9787C433F5 for ; Fri, 24 Dec 2021 02:02:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350892AbhLXCCa (ORCPT ); Thu, 23 Dec 2021 21:02:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230044AbhLXCC1 (ORCPT ); Thu, 23 Dec 2021 21:02:27 -0500 Received: from mail-qt1-x835.google.com (mail-qt1-x835.google.com [IPv6:2607:f8b0:4864:20::835]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9355BC061401; Thu, 23 Dec 2021 18:02:27 -0800 (PST) Received: by mail-qt1-x835.google.com with SMTP id f9so6533061qtk.4; Thu, 23 Dec 2021 18:02:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:from:to:cc:subject:references:mime-version :content-disposition:in-reply-to; bh=8v+EFvrq9T+v8VQpeRHJXJ2x1pq772O3oGSuieKYzqU=; b=nmsB0CFvgBwpMxzUXfY5wZPBhvDR1l4YfQS+npNosLChn5WaGBgoBD0sG5ZrWq3QM0 2eWllSaiSK+/vhUdYISB4kx6ncY6P6LPfQ3rraLOJTR4ozJNkaVRdAJVS6tdadKKmCPK EplJAgj0xDxZ59XUcBMrKtA4yklNA6/hslYiyLIaLC/kFKtAE3HGTVditV8pr74QbKB4 bKAil1OpLBnL/9n7ZmPbze2YgGO08QVxYzUxdYGW04oxwKfbeHcunFbm0KRQlXQ9L5gj vHPBJNlrkOwdOjeRm2M+BK5X0ecic4whmviLL7wNlHUPFtrk6Tm8zCdFgAiUoKk2T49Y Th8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:from:to:cc:subject:references :mime-version:content-disposition:in-reply-to; bh=8v+EFvrq9T+v8VQpeRHJXJ2x1pq772O3oGSuieKYzqU=; b=ZqoBUvLtW6wRv26uKkhuVCCDpFKdaPN32frOklLsIisMCUc8wrvlO6zzEB5Znecd67 WsK+BTnj3SVaEAYzWfqCxhqdSq/Z1bu74mkaGz0VNCpOrO0wqEODeUnxlNVk6ldXTKri 6uY4n0mUMQKghN1mSmanBfnLi9ffqTm+Ijs4Esx1vz3Xj+0GWgc1la/fNZ5dV3RtvnVp MFud4vJwpsE9D85/Nl8KRVr47lsN8jD9sKUxqO5KaL/H9LyRJbBsOofnl0ZcmgMcX1IR QNzMruhb5NqbpOdcBLiYtm1yNBD/u3t/CnRs8X4LUqGEZdvuoGFRuRaQD7VhsYw9eJ6P +YSw== X-Gm-Message-State: AOAM530HCJDxv42FW0hmYxziNZ3xsxSMFRJfP919z+HMnY6KscznvUpS u+5NrO4A0obQbBM9uxV7nB8= X-Google-Smtp-Source: ABdhPJxMH8V8fcN88I0Q/LOISRupUL2sQM3S/8rdhesm6oPdZO6yfYN7mCRTO6MAvj14TeThZt48sA== X-Received: by 2002:a05:622a:11d2:: with SMTP id n18mr2791940qtk.10.1640311346687; Thu, 23 Dec 2021 18:02:26 -0800 (PST) Received: from localhost ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id ay42sm5547135qkb.40.2021.12.23.18.02.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Dec 2021 18:02:26 -0800 (PST) Message-ID: <61c52a32.1c69fb81.e2913.d0d9@mx.google.com> X-Google-Original-Message-ID: <20211224020223.GA570652@cgel.zte@gmail.com> Date: Fri, 24 Dec 2021 02:02:23 +0000 From: CGEL To: Jakub Kicinski Cc: davem@davemloft.net, yoshfuji@linux-ipv6.org, dsahern@kernel.org, prestwoj@gmail.com, xu.xin16@zte.com.cn, zxu@linkedin.com, praveen5582@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Zeal Robot Subject: Re: [PATCH net-next] ipv4: delete sysctls about routing cache References: <20211223122010.569553-1-xu.xin16@zte.com.cn> <20211223084702.51d09c08@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211223084702.51d09c08@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 23, 2021 at 08:47:02AM -0800, Jakub Kicinski wrote: > On Thu, 23 Dec 2021 12:20:10 +0000 cgel.zte@gmail.com wrote: > > From: xu xin > > > > Since routing cache in ipv4 has been deleted in 2012, the sysctls about > > it are useless. > > Search for those on GitHub. Useless or not, there is software which > expects those files to exist and which may break if they disappear. > That's why they were left in place. Maybe we can note these inoperative interfaces in ip-sysctl.rst or somewhere else, suggesting users not to use them any longer. Wish you merry christmas in advance. Xu Xin