[openib-general] RE: CMA backlog

[Sean Hefty]

>This approach would affect all ULPs, however. For example, no SDP imlementation
>that I know of retries after a REJ - so this approach won't be interoperable.
>And AFAIK SDP spec already interprets reject as connection refused.
>There's no provision I cansee in SDP spec for retries on specific
>reject code.

How did SDP expect to handle backlog then?  Or was that a consideration?

>Yes, that was my thinking. To avoid touching all users, maybe the simplest way
>is to make ib_cm discard the new cm_id without reject if the client callback
>returned -ENOMEM?
>
>If you consider that in out of memory situation sending reject will also likely
>fail, this might be a good idea, regardless.
>
>Sounds good?

I'd like to get some other feedback, but this approach sounds reasonable.

- Sean