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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 0BAAEC4161F for ; Wed, 20 Jan 2021 11:21:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E655F23331 for ; Wed, 20 Jan 2021 11:21:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389203AbhATLRR (ORCPT ); Wed, 20 Jan 2021 06:17:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730486AbhATKrz (ORCPT ); Wed, 20 Jan 2021 05:47:55 -0500 Received: from Chamillionaire.breakpoint.cc (Chamillionaire.breakpoint.cc [IPv6:2a0a:51c0:0:12e:520::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2C256C0613ED; Wed, 20 Jan 2021 02:46:59 -0800 (PST) Received: from fw by Chamillionaire.breakpoint.cc with local (Exim 4.92) (envelope-from ) id 1l2B0H-00051F-Cb; Wed, 20 Jan 2021 11:46:21 +0100 Date: Wed, 20 Jan 2021 11:46:21 +0100 From: Florian Westphal To: menglong8.dong@gmail.com Cc: kuba@kernel.org, christian.brauner@ubuntu.com, davem@davemloft.net, yoshfuji@linux-ipv6.org, dong.menglong@zte.com.cn, daniel@iogearbox.net, gnault@redhat.com, ast@kernel.org, nicolas.dichtel@6wind.com, ap420073@gmail.com, edumazet@google.com, pabeni@redhat.com, jakub@cloudflare.com, bjorn.topel@intel.com, keescook@chromium.org, viro@zeniv.linux.org.uk, rdna@fb.com, maheshb@google.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next 3/3] net: core: Namespace-ify sysctl_rmem_max and sysctl_wmem_max Message-ID: <20210120104621.GM19605@breakpoint.cc> References: <20210118143932.56069-1-dong.menglong@zte.com.cn> <20210118143932.56069-4-dong.menglong@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210118143932.56069-4-dong.menglong@zte.com.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org menglong8.dong@gmail.com wrote: > From: Menglong Dong > > For now, sysctl_wmem_max and sysctl_rmem_max are globally unified. > It's not convenient in some case. For example, when we use docker > and try to control the default udp socket receive buffer for each > container. > > For that reason, make sysctl_wmem_max and sysctl_rmem_max > per-namespace. I think having those values be restricted by init netns is a desirable property.