[openib-general] cmpost: failure sending REQ: -22

[Sean Hefty]

>> >Has anyone seen ib_send_cm_req() return -22?
>>
>> I believe that this is a timeout error, possibly indicating that the
>server
>> side of the connection wasn't running.  You may also want to verify the
>slid
>> and dlid are correct for your configuration.
>
>Don't you get a REJ now when there is no one listening on a service ID
>requested ?

You do if the CM is loaded on the destination.

>-22 is EINVAL. In terms of ib_send_cm_req, it is returned for a number
>of cases:
>1. peer to peer connection is requested
>2. No primary path is supplied
>3. QP is not RC or UC
>4. private data is supplied and length > 92
>5. alternate path supplied and PKEY or MTU does not match primary path
>6. connection state is not IDLE
>7. Primary or alternate path SGID or PKey does not match those of port

You're right.  I was thinking about the request failing asynchronously, not
synchronously when called.  Mostly likely cause is a bad slid/dlid.

- Sean