[ofa-general] What are the valid values for SM LID ?

[Kuchimanchi, Ramachandra]

Hal,

Thanks a lot for the information.

Regards,
Ram

-----Original Message-----
From: Hal Rosenstock [mailto:halr at voltaire.com]
Sent: Fri 7/13/2007 8:30 PM
To: Kuchimanchi, Ramachandra
Cc: general at lists.openfabrics.org
Subject: RE: [ofa-general] What are the valid values for SM LID ?
 
Ram,

On Fri, 2007-07-13 at 10:58, Kuchimanchi, Ramachandra wrote:
> Hal,
> 
> > Where ? In ibsrpdm ?
> 
> Yes or in general any one who is reading the SM LID value.
> 
> Put another way, how do you know when the SM LID value in
> /sys/infiniband/.../sm_lid is the correct value ? Is it
> better to check that the value is neither 0x0 nor 0xffff ?
> 
> Or do you go by the state of the port (armed or beyond as you
> mentioned)
> and then read the sm_lid value ?

I think there are multiple algorithms that work:
1. If port state > armed (e.g. armed or active), SMLID is required to be
valid
2. If (SMLID != 0xffff) && (SMLID != 0x0), SMLID is valid

Maybe other algorithms too.

(Same for LID too)

-- Hal

> Regards,
> Ram
> 
> 
> 
> 


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