From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([140.186.70.92]:49435)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <hdegoede@redhat.com>) id 1Qii3y-0001Qg-Tz
	for qemu-devel@nongnu.org; Mon, 18 Jul 2011 03:16:24 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <hdegoede@redhat.com>) id 1Qii3w-0002Ol-Mg
	for qemu-devel@nongnu.org; Mon, 18 Jul 2011 03:16:22 -0400
Received: from mx1.redhat.com ([209.132.183.28]:58703)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <hdegoede@redhat.com>) id 1Qii3w-0002Oh-8Y
	for qemu-devel@nongnu.org; Mon, 18 Jul 2011 03:16:20 -0400
Received: from int-mx09.intmail.prod.int.phx2.redhat.com
	(int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22])
	by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p6I7GJTh016678
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK)
	for <qemu-devel@nongnu.org>; Mon, 18 Jul 2011 03:16:19 -0400
Received: from shalem.localdomain (vpn1-5-8.ams2.redhat.com [10.36.5.8])
	by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP
	id p6I7GHaZ016644
	(version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO)
	for <qemu-devel@nongnu.org>; Mon, 18 Jul 2011 03:16:18 -0400
Message-ID: <4E23DE19.8040205@redhat.com>
Date: Mon, 18 Jul 2011 09:17:45 +0200
From: Hans de Goede <hdegoede@redhat.com>
MIME-Version: 1.0
References: <1310973217-12242-1-git-send-email-hdegoede@redhat.com>
In-Reply-To: <1310973217-12242-1-git-send-email-hdegoede@redhat.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] [PATCH] USB: add usb network redirection support
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

Hi,

Note that using this with devices where a lot of data is send to the device
(ie a usb stick and writing to it a lot) may lead to increased latencies, due
to the long missing flowcontrol support in chardev in one direction.

For those interested, my personal tree contains Amit's flowcontrol patches
ported to the latest qemu-git + a version of the usb-redir patch with
flowcontrol support:
http://cgit.freedesktop.org/~jwrdegoede/qemu/log/?h=usbredir

Regards,

Hans