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From: Keith Owens <kaos@ocs.com.au>
To: Jeff Garzik <jgarzik@mandrakesoft.mandrakesoft.com>,
        Donald Becker <becker@scyld.com>, linux-kernel@vger.kernel.org,
        netdev@oss.sgi.com
Subject: Re: [RFC] Configuring synchronous interfaces in Linux 
In-Reply-To: Your message of "Mon, 04 Dec 2000 07:29:10 +1100."
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Date: Mon, 04 Dec 2000 07:41:06 +1100
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On Mon, 04 Dec 2000 07:29:10 +1100, 
Keith Owens <kaos@ocs.com.au> wrote:
>On Sun, 3 Dec 2000 07:43:01 -0600 (CST), 
>Jeff Garzik <jgarzik@mandrakesoft.mandrakesoft.com> wrote:
>>On Sun, 3 Dec 2000, Keith Owens wrote:
>>> If you go down this path, please add a standard performance monitoring
>>> method to query the current capacity of an interface.
>>Well, ethtool interface supports reporting media selection as well as
>>[re]setting media setting.  I dunno if we could report what capacity
>>an interface is handling without adding code to hot paths...
>
>You calculate the capacity during ifconfig up or during speed change.
>That is not on the hot path.

Replying to my own mail, I just realised it was ambiguous.  By "current
capacity" I mean the maximum capacity of the link based on the current
settings.  We can get capacity _used_ from the byte counters, we do not
have a figure for maximum capacity.

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