From: David Miller <davem@davemloft.net>
To: tgraf@infradead.org
Cc: jeff@garzik.org, bhutchings@solarflare.com,
shemminger@vyatta.com, netdev@vger.kernel.org
Subject: Re: the future of ethtool
Date: Mon, 15 Nov 2010 18:02:25 -0800 (PST) [thread overview]
Message-ID: <20101115.180225.189678628.davem@davemloft.net> (raw)
In-Reply-To: <20101115233335.GB24292@canuck.infradead.org>
From: Thomas Graf <tgraf@infradead.org>
Date: Mon, 15 Nov 2010 18:33:35 -0500
> I tried to solve this by splitting the validate/change operation and
> thus be able to validate all requests before starting to commit
> them. This would mean changing all drivers though which I wasn't
> willing to do.
It isn't sufficient. You can still get into unwindable failures.
Earlier operations can consume fixed resources like TCAM filter
slots or rx/tx queues, making a subsequent operation in the
sequence fail.
A validate/commit scheme cannot detect this effectively.
next prev parent reply other threads:[~2010-11-16 2:02 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-15 19:41 the future of ethtool Jeff Garzik
2010-11-15 20:18 ` Ben Hutchings
2010-11-15 20:44 ` Stephen Hemminger
2010-11-15 21:14 ` Ben Hutchings
2010-11-15 21:14 ` Stephen Hemminger
2010-11-15 21:52 ` Ben Hutchings
2010-11-15 22:49 ` Jeff Garzik
2010-11-15 23:33 ` Thomas Graf
2010-11-16 0:07 ` Jeff Garzik
2010-11-16 0:10 ` Ben Hutchings
2010-11-16 6:25 ` Thomas Graf
2010-11-16 2:02 ` David Miller [this message]
2010-11-16 6:17 ` Thomas Graf
2010-11-15 21:03 ` Jeff Garzik
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