[openib-general] MAD module removal and MAD cache

[Hal Rosenstock]

Hi Sean,

The MAD send code can place a send request on the send list, the QP's
send queue, or overflow list. 

On port close, I see the receive queue being cleaned up but not these.

Am I missing something ? If I'm not, then this may be the MAD cache leak
which causes a problem when running SM, killing it, and trying to remove
the modules.

-- Hal