netdev - Re: [PATCH] Disable TSO for non standard qdiscs

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Message-ID: <47A2C985.30409@trash.net>
Date:	Fri, 01 Feb 2008 08:25:57 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Glen Turner <gdt@....id.au>,
	"Waskiewicz Jr, Peter P" <peter.p.waskiewicz.jr@...el.com>,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	netdev@...r.kernel.org
Subject: Re: [PATCH] Disable TSO for non standard qdiscs

Andi Kleen wrote:
>> The problem with ethtool is that it's a non-obvious nerd knob.  At
>> the least the ethtool documentation should be updated to indicate that 
>> activating TSO effects tc accuracy.
> 
> TSO tends to be activated by default in the driver; very few people who use it
> do even know that ethtool exist or what TSO is.


Indeed. As an example of an unknowing user, this discussion made me
check whether my cablemodem device (on which I'm using HFSC) uses
TSO :)

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