netdev - network stack bypassing with hw queue classification and QOS?

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Message-ID: <BANLkTi=jNezGcDJN-P4xNAht-CiknZa3sQ@mail.gmail.com>
Date:	Tue, 19 Apr 2011 21:17:42 +0200
From:	Daniel Nilsson <gnuffel@...il.com>
To:	netdev@...r.kernel.org
Subject: network stack bypassing with hw queue classification and QOS?

I have hardware that can classify incoming IP-packets L2-L4, and on
the DS field.
This classification allows me to know what outgoing NIC the packets
should end up on, but I still want normal QOS functionality for this
traffic, so I can't push the packets across while staying in the
driver.

Is there any good way of making use of the availability of a
TCAM-alike packet rule classifier while still having the kernel
sort/drop/queue the packets according to various QOS-settings (with no
limitation on what king of policy that can be used for a certain flow)
before they end up in the outgoind NIC? The aim for this application
is to get good packet rate in a system that doesn't have much CPU to
spare.

/Daniel
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