[openib-general] Re: DMA mapping on sparc64

[Roland Dreier]

    Michael> Maybe for IP over IB you can have a pool of pre-allocated buffers.

You can't control the buffers the network stack passes down for you to
send.  In fact you can't even control where the skbuffs you allocate
for receives will be.  If you want to use pre-allocated buffers for
IPoIB then you're stuck copying to and from your own buffers.

What's wrong with using an L_Key with translation off?  It solves all
these problems very simply and it works with all known hardware.

 - R.