John W. Linville wrote:
So, when a perfectly good incoming frame is dropped by the NIC
(generally due to lack of hardware resources), how should it be
counted? There appears to be some confusion or disagreement...
The e100 driver counts such a frame under the rx_dropped field of
its net_device_stats structure. The tg3 driver counts it under the
rx_errors field. The e1000 driver counts it in _both_ places!
Yes there is confusion. I commented on e1000 here last month:
http://sourceforge.net/mailarchive/forum.php?thread_id=7764998&forum_id=12401
The conclusion to that thread was e1000 was going
to be changed to do the following in the next release:
rx_dropped = 0
rx_missed_errors = mpc /* drops only occur in NIC buffer */
--
Pádraig Brady - http://www.pixelbeat.org
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