On Mon, Oct 24, 2005 at 02:35:42PM -0700, Ben Greear wrote:
> It doesn't matter too much to me either way, but I'd like for there to
> be a precisely documented definition for the various net-stats so that
> I can correctly show the values to user-space (I can certainly add
> rx_discards
> to rx_errors for a 'total rx errors' value, but I need to know whether
> rx_discards is already in rx_errors to keep from counting things twice.)
My opinion is that:
-- rx_errors should count all "on the wire" hardware errors;
-- rx_missed_errors should count frames w/ no "on the wire"
errors that cannot be received by the hardware (generally
due to lack of DMA bufers); and,
-- rx_discards should count frames dropped by the kernel
after successful reception by the hardware.
I do _not_ think rx_missed_errors should be counted as part of
rx_errors, but I could be persuaded otherwise.
> Jeff: Could you lay down the law somewhere in the Documentation/
> directory and then let us start fixing any driver that does it differently?
It does seem like a netdev stats clarification doc would be
appropriate. Does anyone have the beginnings of this?
John
--
John W. Linville
[email protected]
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