On 4/12/20 5:32 AM, James Smart wrote:
This patch continues the libefc library population.
This patch adds library interface definitions for:
- FC Domain registration, allocation and deallocation sequence
Signed-off-by: Ram Vegesna <ram.vegesna@xxxxxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
---
v3:
Acquire efc->lock in efc_domain_cb to protect all the domain state
transitions.
Removed efc_assert and used WARN_ON.
Note: Re: Locking:
efc->lock is a global per port lock which is used to synchronize and
serialize all the state machine event processing. As there is a
single EQ all the events are serialized. This lock will protect the
sport list, sport, node list, node, and vport list. All the libefc
APIs called by the driver will take this lock internally.
Note: Re: "It would even simplify the code, as several cases can be
collapsed into one ..."
The Hardware events cannot be collapsed as each events is different
from State Machine events. The code present looks more readable than
a mapping array in this case.
---
drivers/scsi/elx/libefc/efc_domain.c | 1109 ++++++++++++++++++++++++++++++++++
drivers/scsi/elx/libefc/efc_domain.h | 52 ++
2 files changed, 1161 insertions(+)
create mode 100644 drivers/scsi/elx/libefc/efc_domain.c
create mode 100644 drivers/scsi/elx/libefc/efc_domain.h
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
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