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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 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 B89C7C4CEC9 for ; Tue, 17 Sep 2019 18:44:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F63E2054F for ; Tue, 17 Sep 2019 18:44:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZF3c50QS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728002AbfIQSoZ (ORCPT ); Tue, 17 Sep 2019 14:44:25 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:51881 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726573AbfIQSoZ (ORCPT ); Tue, 17 Sep 2019 14:44:25 -0400 Received: by mail-wm1-f65.google.com with SMTP id 7so4760598wme.1 for ; Tue, 17 Sep 2019 11:44:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:subject:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=ZjoHDBBadvwRyyw+M9tGmZyBWChr8xvbK/hlxQBDTY0=; b=ZF3c50QSHO+kq45MJ6xhAEcXjougQuCcR859hh2SKCfJs1xnUz4jzC2yVSXyap7i+E Nkx96JycZLYUMKJ2/YFBxRUcO7xTVgb8xfnb40IUminYSXtFmuNGzJAYOc998KE08CQK dpgd+BumP5qXmlqgUXnhdNKKkqI54694PkWlFxN5o12BNes+lEjeko5FeqxW3j6++akS EejayiwnP6KUG+p0ccwjF2gVBYby2wRpePjeoCCexJLvo/U1jP8kkUlKqzriHoMnfYSS CLQsVbYeBdwxpSiUlP0llDONHTquvZqbON6YavqFmBqmfKNZofbM+fXdeXAsLTPTsbCm AGJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ZjoHDBBadvwRyyw+M9tGmZyBWChr8xvbK/hlxQBDTY0=; b=Netk/jC86ii3M1lCmucwzjoHGoe2OEjA9hMlmwscqxJjg4EltY9mMik+i6MmI1Ipfi izUOKyzX9Iu6KkQhjHj0rj3+wGEhMF3kWe3kkF1hlEm4z3OYYTFXkRW8S+BKRbdDWCcZ +SjU6Dz9v/2F3hAwMHs+LsmX740GQURK6m7DhGI6MhAcaJrlkGhPriI1k87Ic/9LLgaz 7yuuuMoUDSbfLurkytnt+uaupawU0FCG7wI/ob1iRtz2V5HIpeJaYv9YiYcP/Z/ZVKkS 849TdqD6fV49ZsAdrA2wMRvWUGYQxzMO0eAFwhya7h1M9gv65NCwWR92DkdYh5fExZ1n PqTw== X-Gm-Message-State: APjAAAWZTy4QBCSIB9xXYelBIWvvJws9dKyJA68/5Rvzc2a9cnkCetS7 zjXGF3FKNr7GDXyb0p1LVcgQMOGT X-Google-Smtp-Source: APXvYqxa5RO4PbzT0YIi8MUJRdOVUosR/LN1K7RQO7TjOC18H9b6FAwyMMbtRpgyhGPCRmc/nd/ZiQ== X-Received: by 2002:a1c:9a46:: with SMTP id c67mr4611628wme.115.1568745863327; Tue, 17 Sep 2019 11:44:23 -0700 (PDT) Received: from smicro.local.lan (BSN-77-158-208.static.siol.net. [193.77.158.208]) by smtp.gmail.com with ESMTPSA id y5sm1195787wma.14.2019.09.17.11.44.22 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 17 Sep 2019 11:44:22 -0700 (PDT) Date: Tue, 17 Sep 2019 20:44:19 +0200 From: Bob Marcan To: linux-wireless@vger.kernel.org Subject: Re: [RFC 0/4] Allow live MAC address change Message-ID: <20190917204419.41235404@smicro.local.lan> In-Reply-To: <763f4560-ba78-b0e7-6855-fd4bc048ec13@gmail.com> References: <20190904191155.28056-1-prestwoj@gmail.com> <4c43ea6a74cacc61184bc5b1387fecaa40711369.camel@gmail.com> <4909a428ee6fef2bf8b0e61841bc88062f534b13.camel@sipsolutions.net> <896183390a396e8e0508622eceb3664effcb3c30.camel@gmail.com> <87a7b8lciz.fsf@tynnyri.adurom.net> <844f1a1dc72ec73df5a86864b410bbc490c4abdd.camel@gmail.com> <87imprbc0j.fsf@kamboji.qca.qualcomm.com> <763f4560-ba78-b0e7-6855-fd4bc048ec13@gmail.com> X-Mailer: Claws Mail 3.15.1-dirty (GTK+ 2.24.31; x86_64-redhat-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On Tue, 17 Sep 2019 10:40:49 -0500 Denis Kenzior wrote: > Hi Kalle, >=20 > > For user experience scanning and DHCP are also important, what kind of = > numbers you get when those are included? No need to have anything> precis= e, I would like just to get an understanding where we are> nowadays. =20 >=20 > Scanning heavily depends on the RF environment and the hardware. In our = testing ath9k takes stupid long to scan for example. >=20 > But in a sort of best case scenario, using limited scan and no mac change= , iwd connects in ~300ms. People have reported that they have not finished= opening their laptop screen and they're connected, so at that level of lat= ency, every millisecond is important and totally worth fighting for. Rando= mizing the MAC would penalize our connection times by 2X (300 ms at least).= And Android folks have reported the penalty to be as high as 3 seconds. = So this needs to be fixed. And do note that this is a feature every modern= OS implements by default. Randomizing the MAC is a stupid decision. Do you realy expect that this will add something to the security? B. Mar=C4=8Dan