Return-path: Received: from lo.gmane.org ([80.91.229.12]:40115 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755917Ab0CVTkM (ORCPT ); Mon, 22 Mar 2010 15:40:12 -0400 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1NtnTp-0000GY-EF for linux-wireless@vger.kernel.org; Mon, 22 Mar 2010 20:40:05 +0100 Received: from p54A74390.dip.t-dialin.net ([84.167.67.144]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 22 Mar 2010 20:40:05 +0100 Received: from m1kes by p54A74390.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 22 Mar 2010 20:40:05 +0100 To: linux-wireless@vger.kernel.org From: Michael Stahn Subject: Re: [Proposal]TX flags Date: Mon, 22 Mar 2010 19:32:21 +0000 (UTC) Message-ID: References: <69e28c910904141733m72ce521ap8f1865bec991fff7@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-wireless-owner@vger.kernel.org List-ID: Regarding to this proposal I suggest this additional Radiotap feature to be standardised: - Duration field shall not be recalculated ("No-Dur"). The approbiate mask for the Radiotap-Header would be 0x0020. The No-Dur flag is used when sending frames from the userspace to indicate that the frame already has its duration time preconfigured and should not be recalculated by low-level. This is useful for testing porpuses or tools like aireplay which trust on the "send out what you put in"-behaviour, especialliy on RTS-Frames, where duration-fields are reset to 0. If fragmentation is set (Bit 1, mask 0x08), duration-recalculation should be done after all because this would imply the given duration is reused for every subsequent fragment and there isn't an easy way to set different durations for all of them. --Michael Stahn