[SCSI] qla2xxx: Correct synchronization of software/firmware fcport states.

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Greg Wettstein (greg@enjellic.com) noted:

	http://article.gmane.org/gmane.linux.scsi/43409

on a reboot of a previously recognized SCST target, the initiator
driver would be unable to re-recognize the device as a target.
It turns out that prior to the SCST software reloading and
returning it's "target-capable" abilities in the PRLI payload,
the HBA would be re-initialized as an initiator-only type port.
Since initiators typically classify themselves as an FCP-2
capable device, both software and firmware do not perform an
explicit logout during port-loss.  Unfortunately, as can be seen
by the failure case, when the port (now target-capable) returns,
firmware performs an ADISC without a follow-on PRLI, leaving
stale 'initiator-only' data in the firmware's port database.

Correct the discrepancy by performing the explicit logout during
the transport's request to terminate-rport-io, thus synchronizing
port states and ensuring a follow-on PRLI is performed.

Reported-by: Greg Wettstein <greg@enjellic.com>
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

...

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Andrew Vasquez 2008-08-13 21:36:56 -07:00 • committed by James Bottomley

parent fe42625cdf

commit 6390d1f33f

1 changed files with 11 additions and 0 deletions

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drivers/scsi/qla2xxx/qla_attr.c

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