[openib-general] mapping between IP address and device name

[Jay Rosser]

On the subject of NFS/RDMA, what is the IB ServiceID space that is used? 
If I recall correctly, I have seen simply the value 2049 (i.e. the 
standard TCP/UDP port number) used in some implementations (i.e. 00 00 
00 00 00 00 20 49). Is there a mapping onto an IB ServiceID defined?

Thanks,

Jay

>At 12:19 PM 6/24/2005, Roland Dreier wrote:
>  
>
>>It seems far preferable to me to just define the wire protocol of
>>NFS/RDMA for IB such that a client passes its IP address as part of
>>the connection request.  This scheme was used for SDP to avoid
>>precisely the complications that we're discussing now.
>>    
>>
>
>But that's totally and completely insecure. The goal of /etc/exports
>is to place at least part of the client authentication in the network
>rather than the supplied credentials. NFS has quite enough of a
>history with AUTH_SYS to prove the issues there. Some of the
>exports options (e.g. the *_squash ones) are specifically because
>of this.
>
>I don't care about ATS either, by the way. I'm looking for an
>interoperable alternative.
>
>Tom.
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>  
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-- 
jay.rosser at hp.com 408-447-3175