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Date:      Fri, 11 Feb 2011 17:50:16 -0800
From:      "Santosh Rao Gururajan" <santosh@fastsoft.com>
To:        <freebsd-hackers@freebsd.org>
Subject:   ixgbe DMA question
Message-ID:  <D13CB108B048BD47B69C0CA1E0B5C03201EF10E1@hq-es.FASTSOFT.COM>

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I have a host machine with 2 ixgbe NICs. I am trying to pass the frames
from one NIC to the other with the lowest possible overhead to the host
(high speed bridge). I am wondering if I can do a rx-ring to tx-ring DMA
copy without creating a mbuf on the host. Is that possible? What are the
risks?

Thanks,

-santosh




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