From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933348Ab0BHDSh (ORCPT ); Sun, 7 Feb 2010 22:18:37 -0500 Received: from mx1.redhat.com ([209.132.183.28]:16356 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755969Ab0BHDSf (ORCPT ); Sun, 7 Feb 2010 22:18:35 -0500 Message-ID: <4B6F834E.4010801@redhat.com> Date: Mon, 08 Feb 2010 11:21:50 +0800 From: Cong Wang User-Agent: Thunderbird 2.0.0.23 (X11/20091001) MIME-Version: 1.0 To: Octavian Purdila CC: David Miller , linux-kernel@vger.kernel.org, eric.dumazet@gmail.com, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, nhorman@tuxdriver.com, linux-sctp@vger.kernel.org Subject: Re: [RFC Patch] net: reserve ports for applications using fixed port numbers References: <201002031312.48531.opurdila@ixiacom.com> <201002042015.51092.opurdila@ixiacom.com> <4B6BA272.4090405@redhat.com> <201002051405.54029.opurdila@ixiacom.com> In-Reply-To: <201002051405.54029.opurdila@ixiacom.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Octavian Purdila wrote: > On Friday 05 February 2010 06:45:38 you wrote: > >> Again, using bitmap algorithm is not a problem and it's better, the >> problem is sysctl interface, how would you plan to interact with users >> via sysctl/proc if you use bitmap to handle this? I would like to hear >> more details about this. >> > > We could use something like positive values for setting and negative for reset > (e.g. 3 would set the port in the bitmap and -3 would reset it). Hmm, then how do you output the info of those ports? Arrays of bitmaps? > > But we would need new sysctl and proc handlers to handle the bitmap case (e.g. > sysctl_bitmap, proc_dobitmap_minmax). Maybe. Thanks.