[ofw] IPoIB MAC address generation for HP port GUIDs

Tzachi Dar tzachid at mellanox.co.il
Fri May 30 02:15:21 PDT 2008


Sure, just add one more company to the function ipoib_mac_from_guid
(port.c) 

Thanks
Tzachi

> -----Original Message-----
> From: ofw-bounces at lists.openfabrics.org 
> [mailto:ofw-bounces at lists.openfabrics.org] On Behalf Of Fab Tillier
> Sent: Friday, May 30, 2008 4:26 AM
> To: ofw at lists.openfabrics.org
> Subject: [ofw] IPoIB MAC address generation for HP port GUIDs
> 
> Hi Folks,
> 
> We have a cluster with Voltaire/HP HCAs.  The port GUIDs are 
> HP's (OUI == 0x0018FE), rather than Voltaire's (OUI == 
> 0x0008F1).  The result is that the MAC addresses generated by 
> IPoIB are of the locally administered address type - 0x02 in 
> the first byte - which breaks DHCP support.
> 
> Is there some algorithm for converting these GUIDs be added 
> to IPoIB?  Is it the same algorithm as for Voltaire GUIDs, 
> just with a different OUI?
> 
> Thanks!
> -Fab
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