scsi: qla2xxx: Fix NVMe session down detection

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When Target port transitions personality from one to another (NVMe <-->
FCP), there could be some overlap of the two where one layer is going down
while the other layer is coming up. This overlap can cause temporary I/O
error. Detect those errors/transitions and recover from them. Triggers
session tear down and allow relogin to re-drive the connection under the
following conditions:

 - NVMe command error

 - On PRLO + N2N (rida format 2)

Link: https://lore.kernel.org/r/20210817051315.2477-11-njavali@marvell.com
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Quinn Tran 2021-08-16 22:13:13 -07:00 • committed by Martin K. Petersen

parent f884445700

commit 7a8ff7d985

3 changed files with 26 additions and 5 deletions

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12

drivers/scsi/qla2xxx/qla_attr.c

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9

drivers/scsi/qla2xxx/qla_isr.c

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10

drivers/scsi/qla2xxx/qla_mbx.c

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