Prospects for per-receive queue tracing or perhaps tagging packets with their receive queue for later filtering?

[Rick Jones <rick.jones2 () hp com>]

I find myself looking at the likes of ethtool -S output on a Linux 
system, for a multi-queue NIC, and seeing drops reported for a specific 
receive queue.  I thus find myself wishing I could know which 
packets/flows were arriving on that receive queue so I could, 
presumably, figure-out who the "top talker" through that receive queue 
might be.

I can find the top talker overall for traffic arriving on the NIC of 
course, but that requires ass-u-me-ing that the top talker overall would 
be the top talker on the queue with the drops, and given Murphy's Law 
and differing IRQ assignments, that probably isn't a good assumption.

thoughts?

rick jones
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