Re: [openib-general] [PATCH 0 of 20] [RFC] ipath driver - another round for review

[Grant Grundler]

On Fri, Mar 10, 2006 at 09:54:19AM -0800, Bryan O'Sullivan wrote:
> On Fri, 2006-03-10 at 09:48 -0800, Grant Grundler wrote:
> 
> > My gut feeling is you want to look at SDP first.
> 
> We already implement SDP.

ah ok.
Is your SDP slower than the "ethernet emulation" for message passing?

> > I'm skeptical that yet another wire protocol will get
> > accepted into the linux kernel.
> 
> It's just a simple net device driver.

I guess I need to look at the code if I want to understand
what "ethernet emulation" and "simple net device driver"
exactly mean.

You missed the netdev and netfilter guys ranting when Infiniband
promoters proprosed putting a switch in the kernel to bypass
the TCP/IP stack when SDP was available. This happened at OLS2004
Infiniband BOF. Very strong opposition to SDP masquerading
as AF_INET.  SDP is squatting on AT_INET_SDP (27) until it
gets integrated in the kernel.

hth,
grant
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