From patchwork Tue Jan 4 10:57:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: CGEL X-Patchwork-Id: 12703339 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 3FA30C433F5 for ; Tue, 4 Jan 2022 10:57:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231741AbiADK5p (ORCPT ); Tue, 4 Jan 2022 05:57:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33328 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231743AbiADK5p (ORCPT ); Tue, 4 Jan 2022 05:57:45 -0500 Received: from mail-pg1-x52e.google.com (mail-pg1-x52e.google.com [IPv6:2607:f8b0:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B2A5C061761; Tue, 4 Jan 2022 02:57:45 -0800 (PST) Received: by mail-pg1-x52e.google.com with SMTP id x194so9188037pgx.4; Tue, 04 Jan 2022 02:57:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hn5eFdr5rw5/OpN7yZoLYXJGWzqzZZgrg1LfspswN7M=; b=OGmY0yXF0uJl3zaziNQdwKDsCBMlSs+chkm28jhw9Rl5XHrlfzf5V+FxlgLE+8KvQ2 M3LwoUWei9bHltXKnqpXiztDY3BntpKPRj2mAinND2/3k8e9Qg/nQtiN8jxyJ59hEfys CQU7SnwugmXJBhiKp4Rxhwr5VdOvydSJvO2UTr5hs8oDBmtjbMygKcYxJMWHeFdkoJoL Ghq/KZnb1uI5T0pFhfAyhp6KxdEfhRxEmMu9K9+ncCDTZxlu+1ljBFOwM7GUQvq+JypG 0AHa+mjZrm/fhltilcpjE4Pte9FpQx5Evw4xI0sCoPYvTP7sj0Dl99LkmrsoFIoGfUkQ TVTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hn5eFdr5rw5/OpN7yZoLYXJGWzqzZZgrg1LfspswN7M=; b=Gh4bjZFwAD2sawTqjk5KD03TYqKHtny24W/tCGIEWxRrY+JpIHPNya5Be11pIbToFe TJaj1adWqUwCRsVpTPEpbt3laz/4trhRguuU/bzyn7YYu/qWDgABoGFRz7859ke6lDIp Xg8xkuf80MfIXgnNJ1Jt16YO+kq9NuOkZoyYKHgc6su7m+OcHzZcdh9KyK5Q3dXewWME aGuEQwV05nZRpXWexUU8EkcvfpOM5kEZMRjJzakYWQa2QSn/UaaIh4G3YnZgF95LPFzb gNdyPxRvv2z2f6DxJ0HzcF09PLdhaJY1QkEQLWKREzTCjKBYA0rr1KKlU7sh+SGVlj8e qSeg== X-Gm-Message-State: AOAM532qEVEjIhvNyggka0ZEop+C27EA5gpRTuu9KQvxgHruuDvPAMCw v3k5wOsjL1aNMbtAUH0cCzk= X-Google-Smtp-Source: ABdhPJxdxB/cClrALKt0FJPKOtERSfkH/CLWzs25rAkBnaCzUBYOQBdMMmntK83Hbq53hqYbEWPIdg== X-Received: by 2002:aa7:9515:0:b0:4ba:77b5:ef82 with SMTP id b21-20020aa79515000000b004ba77b5ef82mr50985648pfp.11.1641293864907; Tue, 04 Jan 2022 02:57:44 -0800 (PST) Received: from localhost.localdomain ([193.203.214.57]) by smtp.gmail.com with ESMTPSA id g21sm41648276pfc.75.2022.01.04.02.57.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Jan 2022 02:57:44 -0800 (PST) From: cgel.zte@gmail.com X-Google-Original-From: xu.xin16@zte.com.cn To: davem@davemloft.net, kuba@kernel.org, yoshfuji@linux-ipv6.org, dsahern@kernel.org Cc: xu.xin16@zte.com.cn, edumazet@google.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/2] ipv4: Namespaceify two sysctls related with mtu Date: Tue, 4 Jan 2022 10:57:39 +0000 Message-Id: <20220104105739.601448-1-xu.xin16@zte.com.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: xu xin The following patch series enables the min_pmtu and mtu_expires to be visible and configurable per net namespace. Different namespace application might have different requirements on the setting of min_pmtu and mtu_expires. If these two patches are applied, inside a net namespace we create, we can see two more sysctls under /proc/sys/net/ipv4/route: 1. min_pmtu 2. mtu_expires where min_pmtu and mtu_expires are configurable. xu xin (2): namespaceify-min-pmtu Namespaceify pmtu_expires xu xin (2): Namespaceify min_pmtu sysctl Namespaceify mtu_expires sysctl include/net/netns/ipv4.h | 3 ++ net/ipv4/route.c | 74 ++++++++++++++++++++++++++-------------- 2 files changed, 51 insertions(+), 26 deletions(-)