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scsi: be2iscsi: Add TPE recovery feature

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After UE is detected, check for recoverable error by reading
SLIPORT SEMAPHORE register. If transient parity error i.e. 0xExxx
then schedule recovery work on driver wq.

FLag this error to prevent any transactions for the duration of ue2rp to
restart polling. After that, if FW becomes ready then recover port.

Wake up processes in wq before going offline.
Wait for process to execute before cleaning up.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Jitendra Bhivare 2016-08-19 15:20:18 +05:30 • committed by Martin K. Petersen
commit d1d5ca887c
7 changed files with 632 additions and 433 deletions
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