scsi: qedf: Modify abort and tmf handler to handle edge condition and flush

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An I/O can be in any state when flush is called, it can be in abort,
waiting for abort, RRQ send and waiting or TMF send.

 - HZ can be different on different architecture, correctly set abort
   timeout value.

 - Flush can complete the I/Os prematurely, handle refcount for aborted
   I/Os and for which RRQ is pending.

 - Differentiate LUN/TARGET reset, as cleanup needs to be send to firmware
   accordingly.

 - Add flush mutex to sync cleanup call from abort and flush routine.

 - Clear abort/outstanding bit on timeout.

Signed-off-by: Shyam Sundar <shyam.sundar@marvell.com>
Signed-off-by: Chad Dupuis <cdupuis@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

...

This commit is contained in:

Saurav Kashyap 2019-03-26 00:38:38 -07:00 • committed by Martin K. Petersen

parent 5d5e55659b

commit 69ef2c6925

4 changed files with 276 additions and 67 deletions

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10

drivers/scsi/qedf/qedf.h

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31

drivers/scsi/qedf/qedf_els.c

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178

drivers/scsi/qedf/qedf_io.c

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124

drivers/scsi/qedf/qedf_main.c

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