Xen users - Apr 2007 - IB devices visible on RHEL5 Guest OS

I am running the Xen kernel and installed RHEL5 64bit guest OS. I have
access to the ethernet devices i.e. eth0 and eth1 from the virtual
machine (guest OS), but how can get access to the IB HCA (Infiniband
network card, ib0) on my VM?

Here''s my ethernet bridge config, can I do the same thing with IB? I
haven''t had any luck b/c the MAC address in 20 bytes instead of 6.  
Has
anyone tried this before?
 
[root@svbu-qa1950-3 ~]# ifconfig ib1
ib1       Link encap:InfiniBand  HWaddr
00:00:04:05:FE:80:00:00:00:00:00:00:00:00:00:00:00:00:00:00  
          BROADCAST MULTICAST  MTU:2044  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:128 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)


[root@svbu-qa1950-3 ~]# brctl show
bridge name bridge id STP enabled interfaces
xenbr0 8000.feffffffffff no peth0
vif0.0
xenbr1 8000.feffffffffff no peth1
vif0.1
xenbr3 8000.000000000000 no
 
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Hi,

i''m experiencing the same problem, with Xen-SmartIO and Infiniband, on
a
SLES10 OS.
Currently, my domU is linked via its eth0 on vifx.0 of my dom0.

I tried to modify script files in /etc/xen/scripts/ (for instance
network-bridge,vif-bridge...) , but it doesn''t work...

In fact, i want to do this :

dom0: fake ib0 -> vif0.0 -+
                            |
                          bridge -> real ib0 -> the network
                            |
domU: fake ib0 -> vifN.0 -+

I want if it''s possible that domU see the fake ib0 interface as an
infiniband interface.

If someone has an idea, it would be great!

Thanks

Thibaud


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