[openib-general] [PATCH] FMR support in mthca

[Grant Grundler]

On Tue, Mar 29, 2005 at 06:12:28PM -0800, Libor Michalek wrote:
>   The recompile modifications to use SDP protocol familt for regular 
> ttcp are pretty straight forward:
> 
>   #include <sdp_sock.h>
>   #undef AF_INET
>   #define AF_INET AF_INET_SDP

Yes, that's pretty easy.

>   I could checkin the source for the modified ttcp's but I'm not sure
> exactly where... (gen2/users/libor ???)

I wouldn't bother for the "#define AF_INET AF_INET_SDP" above.
If the AIO version is more complicated, maybe create an "examples"
directory under gen2/src/userspace?

[ list of modules deleted ]
>   That's pretty much all you need, once ipoib is configure a socket
> created with the SDP protocol family can connect/bind using the
> addresses of the ipoib interfaces as you would for a TCP socket.

Ah! *click* ib_ipoib is missing!

For whatever reason I didn't realize ib_sdp only adds the alternative
net family. Yes, I did notice the "NET: Registered protocol family 27"
when loading ib_sdp.

I had associated ip_ipoib with providing TCP/IP but of course it does NOT.
ipoib *uses* the existing stack for AF_INET. Doh!
Feeling a little slow these days...

> > The most recent "How-To test SDP" for gen1 posted on Jun 17, 2004:
> > 	http://openib.org/pipermail/openib-general/2004-June/002892.html
> > 
> > It references libsdp.so which doesn't seem to exist in gen2.
> > Has anyone written an update for gen2?
> 
>   MST checked libsdp into the gen2 tree: gen2/trunk/src/userspace/libsdp

sorry...my bad. usespace part of my local tree was quite stale. 
"svn up" fixed that. Thanks for patiently pointing out the obvious.

> Which is great for using SDP with application binaries that you do not
> want to modify. However, for the async numbers you need a program that's
> using AIO for network sockets, of which I have a few...

More fodder for "examples" someplace in gen2 tree?
Or perhaps links to the right projects (e.g netperf.org) in
a userspace/examples/README file?
Or maybe more obvious here -> http://www.openib.org/doc.html ?


I just stumbled across links to http://www.web-polygraph.org/ again.
That's not something I use every day... Pointers to different
tests that are relevant to evaluating IB are helpful. If someone
starts it, I'll contribute to the list.

thanks,
grant