From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 02/10] [TCP]: Extend reordering detection to cover CA_Loss partially Date: Thu, 15 Nov 2007 19:35:27 -0800 (PST) Message-ID: <20071115.193527.149970561.davem@davemloft.net> References: <11951338542267-git-send-email-ilpo.jarvinen@helsinki.fi> <1195133854795-git-send-email-ilpo.jarvinen@helsinki.fi> <11951338543953-git-send-email-ilpo.jarvinen@helsinki.fi> Mime-Version: 1.0 Content-Type: Text/Plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org To: ilpo.jarvinen@helsinki.fi Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:52094 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1753629AbXKPDf2 convert rfc822-to-8bit (ORCPT ); Thu, 15 Nov 2007 22:35:28 -0500 In-Reply-To: <11951338543953-git-send-email-ilpo.jarvinen@helsinki.fi> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org =46rom: "Ilpo_J=E4rvinen" Date: Thu, 15 Nov 2007 15:37:26 +0200 > This implements more accurately what is stated in sacktag's > overall comment: >=20 > "Both of these heuristics are not used in Loss state, when > we cannot account for retransmits accurately." >=20 > When CA_Loss state is entered, the state changer ensures that > undo_marker is only set if no TCPCB_RETRANS skbs were found, > thus having non-zero undo_marker in CA_Loss basically tells > that the R-bits still accurately reflect the current state > of TCP. >=20 > Signed-off-by: Ilpo J=E4rvinen Applied to net-2.6.25, thanks!