[ofa-general] Re: Re: IPoIB-CM UC mode

[Michael S. Tsirkin]

> Quoting Sean Hefty <mshefty at ichips.intel.com>:
> Subject: Re: [ofa-general] Re: Re: IPoIB-CM UC mode
> 
> >So we must send something that will force remote side to respond. One such
> >message is LAP with current primary path used as proposed alternate path.
> >Remote will respond with APR with AP status 5 if the connection is there, 
> >and
> >status 1 if it is not.
> 
> I didn't follow this.  Is this just an out of band keep alive message? 

Yes. Exactly.

> Why not use DREQ to indicate that the connection went away under normal 
> circumstances,

Yes, clearly we do this.
Keepalives cover the failure cases: remote is down, or has rebooted,
or all DREQs were lost, etc ...

> and a send failure in an abnormal termination case?

What do you mean by "send failure"? Completion with error?
We only get these with RC, not with UC.

-- 
MST