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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 8549AC43603 for ; Mon, 9 Dec 2019 23:42:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4A50B2071E for ; Mon, 9 Dec 2019 23:42:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="fSf1ZGmS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727291AbfLIXmV (ORCPT ); Mon, 9 Dec 2019 18:42:21 -0500 Received: from mail-pj1-f65.google.com ([209.85.216.65]:43577 "EHLO mail-pj1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727123AbfLIXmU (ORCPT ); Mon, 9 Dec 2019 18:42:20 -0500 Received: by mail-pj1-f65.google.com with SMTP id g4so6562570pjs.10 for ; Mon, 09 Dec 2019 15:42:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:in-reply-to:references :organization:mime-version:content-transfer-encoding; bh=V+QMhx7ddpbkcSbPVKvyp45lyXMPmAo/pgMKOqAodfE=; b=fSf1ZGmSL3/xD1sMkMysZYFQFkGtn4G49qvt9u4+83SppEPRq/o5shJLAh1xxMujyM VC8EVKvtCCF5tXdXKNzmki+xLo2g7WdS2UrLud6KSRM2ReK0TNZDd+c8F46NbwYLI2vx hek5iKYcDWlYOAAR0OSqHN7uIbTW27q7zhQSIGmLub8HR+sjnlIoMrleANj4pX3f7/LS M/YbmE76H8VqGGw6nUDGNeHMc5bQDCTZymYFmg4cFyHlPsDIsXN+VSW/W/YA93pUJAme c4lOGrIhofDpQupdRbBxJo5Z19M7z5rFb3rGDldu2L/4gXoSmlatMo8R7D47iILS8lzr DUSw== 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:cc:subject:message-id:in-reply-to :references:organization:mime-version:content-transfer-encoding; bh=V+QMhx7ddpbkcSbPVKvyp45lyXMPmAo/pgMKOqAodfE=; b=Ci9DZ/JEUwzcPDzhCXbdNgejqqO5zCzmDY56TNeP/oBPyhPu0XbMRx3RFxD20yAvCF KEx6i/qCs+QHP5wL+Ej8Kj4mXc1+S7MaShbEDbJ+lu89snEF5V0fD3SwJUFBYcT1wdP7 bYXaxPHmHKXjcqKchY/IeJp/X1r3Gg3PMzgmYnla+HgtNOGN2LEPWZ9eQYcITBA7pWzo Qj/UCmjjuA91g9u3coonJIC/mX9SWjiEY8zSTWHBxmPMtD1xBR/eyFGZaBNnLYtIfM1f QuTyPed9wRjdq0jlMzn0Kj3wySZHGwQMg08W92+/EphRNc31SMt6uLQnZcxRVEbhkns7 I7gA== X-Gm-Message-State: APjAAAU043pku6MC5S/kIQoIX0jSb8WhepNOLsUvXDX+BUxf74onbD46 aYdeuWTHhqg69RKFGg3mZphnTQ== X-Google-Smtp-Source: APXvYqyfZb7MEcnxbUPQl2yGD5rqMg8NC6Pf7z6qDPwFCvFdZjlSfWs3Vqyy3mFRXwiM+UpLFcbzCg== X-Received: by 2002:a17:902:820f:: with SMTP id x15mr32558307pln.125.1575934940114; Mon, 09 Dec 2019 15:42:20 -0800 (PST) Received: from cakuba.netronome.com ([66.60.152.14]) by smtp.gmail.com with ESMTPSA id w3sm552243pfd.161.2019.12.09.15.42.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Dec 2019 15:42:19 -0800 (PST) Date: Mon, 9 Dec 2019 15:42:16 -0800 From: Jakub Kicinski To: Maciej =?UTF-8?B?xbtlbmN6eWtvd3NraQ==?= Cc: Maciej =?UTF-8?B?xbtlbmN6eWtvd3NraQ==?= , "David S . Miller" , Linux Network Development Mailing List , Marcelo Ricardo Leitner , Sean Tranchetti , Eric Dumazet , Linux SCTP , Subash Abhinov Kasiviswanathan Subject: Re: [PATCH v2] net: introduce ip_local_unbindable_ports sysctl Message-ID: <20191209154216.7e19e0c0@cakuba.netronome.com> In-Reply-To: <20191209224530.156283-1-zenczykowski@gmail.com> References: <20191209224530.156283-1-zenczykowski@gmail.com> Organization: Netronome Systems, Ltd. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Mon, 9 Dec 2019 14:45:30 -0800, Maciej =C5=BBenczykowski wrote: > Example use cases might be: > - a port being stolen by the nic for remote serial console, remote > power management or some other sort of debugging functionality > (crash collection, gdb, direct access to some other microcontroller > on the nic or motherboard, remote management of the nic itself). This use case makes me a little uncomfortable. Could you elaborate what protocols and products are in need of this functionality? Why can't the NIC just get its own IP like it usually does with NCSI?