[ofa-general] openSM design document required

[Hal Rosenstock]

On Thu, 2007-04-05 at 07:05, keshetti mahesh wrote:
> ya I found that old document here
> http://infiniband.sourceforge.net/LinuxSAS.1.0.1.pdf.  its dated
> 8/1/2002 ..pretty
>  old.
> 
> Is there any effort going on to design a latest openSM design document
> as such?

Nope; not that I'm aware of.

> actually i want to know how the subnet discovery in detail using
> directed route
>  SMPs is implemented in openSM.
>  Acc. to the spec. SM it discovers the subnet topology using directed
> route
>  SMPs. How exactly it is done in openSM. 

OpenSM walks out a hop at a time starting at hop 0 based on what node
type is found at that hop level. It determines whether to walk out a
switch link based on whether the port state is down or not. Have you
looked at osm_state_mgr.c ?

-- Hal

> thanks and regards,
> Mahesh
> 
> 
> 
> 
> Hal Rosenstock <halr at voltaire.com> wrote:
>         Mahesh,
>         
>         On Thu, 2007-04-05 at 00:41, keshetti mahesh wrote:
>         > Hi,
>         > 
>         > whosoever owning the openSM currently can you please give me
>         the
>         > design document(not UN or RN) of it. If it is already
>         exisiting
>         > somewhere give me the links.
>         > 
>         > Please CC your rpelies to me .
>         
>         I am the maintainer of OpenSM and there is no current design
>         document.
>         There may be a very old one from the Intel IBAL days. If that
>         exists
>         somewhere, it's got to get at least 5 years old (and quite
>         incomplete
>         and out of date).
>         
>         -- Hal
>         
>         > thanks and regards,
>         > Mahesh
>         > 
>         > 
>         >
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