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Date: Tue, 25 Mar 2014 15:15:32 -0400
Message-ID: <CAFMmRNxKAX9d0A=qCtX7f-NSKEM_4KcEZFMFvrzRVNzR=oWcKg@mail.gmail.com>
Subject: Re: Non-interrupt packet sending and receiving
From: Ryan Stone <rysto32@gmail.com>
To: Sean Fagan <sef@ixsystems.com>
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You might want to take a look at the projects/sv branch, which
implement kernel core dumps over the network.  We had to solve a
similar problem there (in lem, em, igb and ixgbe) and ended up
piggybacking on most of the DEVICE_POLLING code to do it.  The work
ended up stalling over objections over calling into the mbuf allocator
(which I guess may be a stumbling block for your work).  Unfortunately
we weren't able to come up with a clean way to share the existing
rx/tx paths in the drivers while separating the mbuf allocations out.