Previously CTL would leave individual LUNs enabled in the target
driver, whether or not the port as a whole was enabled. It would
also leave the wildcard LUN enabled indefinitely.
This change means that CTL will enable and disable any active LUNs,
as well as the wildcard LUN, when enabling and disabling a port.
Also, fix a bug that could crop up due to an uninitialized CCB
type.
ctl.c: Before calling ctl_frontend_online(), run through
the LUN list and enable all active LUNs.
After calling ctl_frontend_offline(), run through
the LUN list and disble all active LUNs.
scsi_ctl.c: Before bringing a port online, allocate the
wildcard peripheral for that bus. And after taking
a port offline, invalidate the wildcard peripheral
for that bus.
Make sure that we hold the SIM lock around all
calls to xpt_action() and other transport layer
interfaces that require it.
Use CAM_SIM_{LOCK|UNLOCK} consistently to acquire
and release the SIM lock.
Update a number of outdated comments. Some of
these should have been fixed long ago.
Actually do LUN disbables now. The newer drivers
in the tree work correctly for this as far as I
know.
Initialize the CCB type to CTLFE_CCB_DEFAULT to
avoid a panic due to uninitialized memory.
Submitted by: Chuck Tuffli (partially)
MFC after: 1 week
744c26b250