tree 23d8c00fd535abb6f9d56e98ade838b8ed253e99
parent e3453f6342110d60edb37be92c4a4f668ca8b0c4
author Sathya Perla <sathyap@serverengines.com> 1245283379 +0000
committer David S. Miller <davem@davemloft.net> 1245395919 -0700

be2net: Add MCC queue mechanism for BE cmds

Currenlty all cmds use the blocking MCC mbox to post cmds. An mbox cmd is protected
via a spin_lock(cmd_lock) and not spin_lock_bh() as it is undesirable
to disable BHs while a blocking mbox cmd is in progress (and take long to finish.)
This can lockup a cmd in progress in process context. Instead cmds that may be
called in BH context must use the MCC queue to post cmds. The cmd completions
are rcvd in a separate completion queue and the events are placed in the tx-event
queue.

Signed-off-by: Sathya Perla <sathyap@serverengines.com>
Signed-off-by: David S. Miller <davem@davemloft.net>