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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 ED438C5DF60 for ; Tue, 5 Nov 2019 15:42:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD8DC2087E for ; Tue, 5 Nov 2019 15:42:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=6wind.com header.i=@6wind.com header.b="jtFKvW/3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389961AbfKEPmf (ORCPT ); Tue, 5 Nov 2019 10:42:35 -0500 Received: from mail-wr1-f68.google.com ([209.85.221.68]:36930 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389032AbfKEPmf (ORCPT ); Tue, 5 Nov 2019 10:42:35 -0500 Received: by mail-wr1-f68.google.com with SMTP id t1so16013930wrv.4 for ; Tue, 05 Nov 2019 07:42:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind.com; s=google; h=reply-to:subject:to:cc:references:from:organization:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=ihWl6tbPxjGEAfGSpYgRl/v+8P5acse/QfPFY9bQYv4=; b=jtFKvW/3NrrKUNLCW6tunBqhmsxRLFXCBK7g3Oo7rknvY6A7mhGfcG6ZbLcxy/bs2V Yizwshz0ZxR3lAL87YXza4xTxYVqaOCDG4Wq/CcVcT0/LAOc5w7mPEiycRKexq/o6CbR UL8TUu6CuQxIzdSc4ciMo3EcxA/cFGupzNeBaZHNZTFOWICC+2TB3utIkKmJ4oyy4cI7 o4qp84k+uua7lRXLCPTfIjub8ZNdKr1tlgdjKCMCqUM72D22HBzDjyTj94UHXs1ZjT06 LnLjZkCwCO0OnxodHCPWuZ98f8y4wVmf9lqTcuMnu9m1m6ZtAT2pvkDckFC48O7ur9WP p6Bw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:reply-to:subject:to:cc:references:from :organization:message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=ihWl6tbPxjGEAfGSpYgRl/v+8P5acse/QfPFY9bQYv4=; b=RAWK5AhR8aN9tfM0lTT7jOR1HY9h9UK8xclUL6XirYhAyMoeqecZjKGk/spJqcjooo z290gc2pbKlwdoIBG3uLSBBAWMk4k154dMnOktdYyWc+tvpJylSo7z8BB54R6d5+Vh0U 6Rsj7fsVqTlZWogGf9b+Hk/LyT2IUz62d8oztdbhD4fYbHRk3RpYA5P1C0wxnfVumPcS pSw/1tHKbpHkchZMPvf8N1Mtsc3OV+ZfvQQ5xYReted+4SAyR7/nrvZik6AXjyGHRQkz 8AnDZe1IcyoqXGPLf09Xa/ACtZzyHI4ExjyRx28CNE4IM6Mj5tVvCmemsgQgbiVRJVVq 7ZYw== X-Gm-Message-State: APjAAAUcc8NdW0wANwHBZz21Nfpq9nHaM8yRBHEkzDvTshumgb5aNU1P ZwFGmUD7daGso4iPx3SvtuRb3g== X-Google-Smtp-Source: APXvYqx8kC0WQWfv9qPkY5bcs/nSmWc7axoqe1afbOX2XUVdmOqx3cnUP+JzYrgAFN8OVrrc2n1jaA== X-Received: by 2002:a5d:4982:: with SMTP id r2mr22885116wrq.254.1572968553045; Tue, 05 Nov 2019 07:42:33 -0800 (PST) Received: from ?IPv6:2a01:e35:8b63:dc30:f096:9925:304a:fd2a? ([2a01:e35:8b63:dc30:f096:9925:304a:fd2a]) by smtp.gmail.com with ESMTPSA id y67sm2257449wmb.38.2019.11.05.07.42.32 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Nov 2019 07:42:32 -0800 (PST) Reply-To: nicolas.dichtel@6wind.com Subject: Re: [PATCH 2/5] rtnetlink: skip namespace change if already effect To: Jonas Bonn , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Cc: davem@davemloft.net References: <20191105081112.16656-1-jonas@norrbonn.se> <20191105081112.16656-3-jonas@norrbonn.se> From: Nicolas Dichtel Organization: 6WIND Message-ID: <1a6ff19a-36f5-ec3e-3616-5dc142635223@6wind.com> Date: Tue, 5 Nov 2019 16:42:31 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20191105081112.16656-3-jonas@norrbonn.se> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 05/11/2019 à 09:11, Jonas Bonn a écrit : > RTM_SETLINK uses IFA_TARGET_NETNSID both as a selector for the device to > act upon and as a selection of the namespace to move a device in the > current namespace to. As such, one ends up in the code path for setting > the namespace every time one calls setlink on a device outside the > current namespace. This has the unfortunate side effect of setting the > 'modified' flag on the device for every pass, resulting in Netlink > notifications even when nothing was changed. > > This patch just makes the namespace switch dependent upon the namespace > the device currently resides in. > > Signed-off-by: Jonas Bonn Acked-by: Nicolas Dichtel