K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2009-08-25T06:25:59.429097Z
K 7
svn:log
V 491
Rather than havnig enabled/disabled, implement a max queue depth.
While usually not an issue, this firewalls bugs in the code that may
run us out of memory.

Fix a memory exhaustion in the case where devctl was disabled, but the
link was bouncing.  The check to queue was in the wrong place.

Implement a new sysctl hw.bus.devctl_queue to control the depth.  Make
compatibility hacks for hw.bus.devctl_disable to ease transition.

Reviewed by:	emaste@
Approved by:	re@ (kib)
MFC after:	asap

END