From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932458Ab0AFUho (ORCPT ); Wed, 6 Jan 2010 15:37:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932296Ab0AFUhn (ORCPT ); Wed, 6 Jan 2010 15:37:43 -0500 Received: from mailout1.go2.pl ([193.17.41.11]:49965 "EHLO mailout1.go2.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932263Ab0AFUhm convert rfc822-to-8bit (ORCPT ); Wed, 6 Jan 2010 15:37:42 -0500 Subject: =?UTF-8?Q?Re:_[linux-pm]_[suspend/resume]_Re:_userspace_notific_?= =?UTF-8?Q?ation_from_module?= From: =?UTF-8?Q?Bart=C5=82omiej_Zimo=C5=84?= To: linux-kernel@vger.kernel.org Cc: aeriksson@fastmail.fm, awalls@radix.net, linux-pm@lists.linux-foundation.org, =?UTF-8?Q?Anders_Eriksson?= , danborkmann@googlemail.com In-Reply-To: <20100106143534.A7EEA33C5F5@tippex.mynet.homeunix.org> References: <686edb2c.6263643a.4b3f4a3b.b60b3@o2.pl> <201001060003.23419.rjw@sisk.pl> <1ab86ec9.7bc73105.4b43cd45.c2747@o2.pl> <20100106143534.A7EEA33C5F5@tippex.mynet.homeunix.org> Mime-Version: 1.0 Message-ID: <5c33d92a.63a2de8c.4b44f47a.8762@o2.pl> Date: Wed, 06 Jan 2010 21:37:14 +0100 X-Originator: 83.12.131.34 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dnia 6 stycznia 2010 15:35 Anders Eriksson napisał(a): > > uzi18@o2.pl said: > > Ummm sorry, it's IM App, to be realible for such app it's needed to close > > conn before suspend, because after resume tcp connections will wait > > (especialy on linux) quiet a lot of time to broke and reconnect. > > I don't know the details here, but shouldn't the kernel fix this internally? > > If sufficient time have elapsed so the kernel _should_ have sent keep alives > etc on an othervise idle connection, they shold be sent immediately on resume. > If the other end has disappeared by then, the resulting port unreachable > should trigger a local closure of the tcp state which the app will notice > (EBADF, or similar). Or? > > Seems to me the kernel should sit on enough info to handle this nicely. > Good bohevior is client to close session before suspend to not loose any message. Best Regards Bartlomiej Zimon