[ofa-general] Port State Change Event

[Batwara, Ashish]

Hi,
We would want to simulate various port states (ARM, INIT, ACTIVE, DOWN,
ACTIVE DEFER) on target side without connecting to the network (No SM).

Question: Is it true that functions in mad.c gets called even for local
port (Assuming that we have SM in the network and one target port is
directly connected to initiator port running SM)? In other words, where
in the OFED code, we can see port states getting changed?

Thanks
Ashish

-----Original Message-----
From: Dotan Barak [mailto:dotanb at dev.mellanox.co.il] 
Sent: Sunday, September 09, 2007 1:08 AM
To: Batwara, Ashish
Cc: openib-general at openib.org
Subject: Re: [ofa-general] Port State Change Event

Hi.

Batwara, Ashish wrote:
>
> Hi,
>
> I am looking for a single point in code where I can get the 
> information about the port state change. We are using mthca driver. I 
> can see port_change in mthca_eq.c, but here I can only see two states 
> - Active and Down. Is there any place in the code where I can see 
> about other states as well, e.g. Arm, Init, Active Defer.
>
What exactly do you need?

I believe that you saw the code that produces the event (port active and

port down events).

The entity that takes care of the machine state of the logical link is 
the openSM (or any other Subnet Manager):
It sends MADs to the IB port between the nodes in the subnet, configures

the port's properties and
move the logical link to active state.

thanks
Dotan