Francesco DiMambro writes:
>     Also I have in my driver an Implementation of MDT which works great 
> for x86 and
> sparc, Solaris 10 and 11 not sure how all the public/private interface 
> work now with
> everything being open sourced,

It works exactly the same way.  It's really an engineering matter, not
a funding matter, so who signs the paychecks of the folks doing the
work (or even if there aren't any paychecks) makes no difference, nor
does the location of the server on which you find the code (whether on
SWAN, off, or somewhere else entirely).

The engineering issue is to coordinate changes so that your drivers
don't just break when the bits are changed.

"Private" in ARC terms doesn't mean "you're not allowed to see this."
In fact, it means exactly the opposite: it means you *CAN* see this,
but you SHOULD NOT rely on it even though it's visible.

The things that are not visible at all (such as perhaps stack
variables and CPU registers) don't actually need to be classed as
"Private."  They're "Internal."

> driver for Solaris 10, and would like to make sure that I can continue 
> to use it for
> Solaris11, do I still need to do a contract or something, so you have on 
> file a
> customer that is successfully using the MDT interface?

Yes, you'd need an ARC contract.  I suggest contacting Markus Flierl,
and working out the details.  It should be simple, as I don't think
we're planning on enhancing MDT, so having a contract burdening the
team will probably not make a difference.

If you're using straight DLPI, I'd suggest at least asking about
GLDv3.  DLPI likely isn't going to go any faster.

> UDP performance is well, so it provided accelerated Tx for protocol 
> other than TCP,
> What about SCTP is it there also?

SCTP doesn't bother with MDT.

>      I also noticed with both MDT and LSO implemented and advertised as 
> a capability in
> the driver MDT takes config priority, which is a wonderful design choice.

It actually makes sense to me.  LSO is a brutal hack, at least as far
as the networking protocols go.  It breaks IPsec, PMTUD, and probably
other things as well.  MDT is transparent by comparison.

-- 
James Carlson, Solaris Networking              <[EMAIL PROTECTED]>
Sun Microsystems / 35 Network Drive        71.232W   Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757   42.496N   Fax +1 781 442 1677
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