linux-toradex.git/include/scsi/libfc.h, branch v3.14.3

libfc: Do not invoke the response handler after fc_exch_done()

2013-09-04T20:45:22+00:00

While the FCoE initiator driver invokes fc_exch_done() from inside
the libfc response handler, FCoE target drivers typically invoke
fc_exch_done() from outside the libfc response handler. The object
fc_exch.arg points at may disappear as soon as fc_exch_done() has
finished. So it's important not to invoke the response handler
function after fc_exch_done() has finished. Modify libfc such that
this guarantee is provided if fc_exch_done() is invoked from
outside a response handler. This patch fixes a sporadic crash in
FCoE target implementations after a command has been aborted.

Signed-off-by: Bart Van Assche 
Cc: Neil Horman 
Signed-off-by: Robert Love

libfc, fcoe, bnx2fc: Split fc_disc_init into fc_disc_{init, config}

2013-03-25T23:03:03+00:00

Split discovery initialization in code that is setup once (fcoe_disc_init)
and code that can be re-configured (fcoe_disc_config).

Signed-off-by: Robert Love 
Tested-by: Jack Morgan 
Reviewed-by: Bhanu Prakash Gollapudi

libfc, fcoe, bnx2fc: Always use fcoe_disc_init for discovery layer initialization

2013-03-25T23:01:10+00:00

Currently libfcoe is doing some libfc discovery layer initialization outside of
libfc. This patch moves this code into libfc and sets up a split in discovery
(one time) initialization code and (re-configurable) settings that will come in
the next patch.

Signed-off-by: Robert Love 
Tested-by: Jack Morgan 
Reviewed-by: Bhanu Prakash Gollapudi

[SCSI] libfc: update fcp and exch stats

2012-07-20T07:31:48+00:00

Updates newly added stats from fc_get_host_stats,
added new function fc_exch_update_stats to
update exches related stats from fc_exch.c
by going thru internal ema_list elements.

Signed-off-by: Vasu Dev 
Acked-by : Robert Love 
Tested-by: Ross Brattain 
Signed-off-by: James Bottomley

[SCSI] libfc: adds FCP failures stats

2012-07-20T07:31:48+00:00

Adds stats to track FCP pkt and frame alloc
failure.

Signed-off-by: Vasu Dev 
Acked-by : Robert Love 
Tested-by: Ross Brattain 
Signed-off-by: James Bottomley

[SCSI] libfc, fcoe, bnx2fc: cleanup fcoe_dev_stats

2012-07-20T07:31:47+00:00

The libfc is used by fcoe but fcoe agnostic,
and therefore should not have any fcoe references.

So renaming fcoe_dev_stats from libfc as its for fc_stats.
After that libfc is fcoe string free except some strings for
Open-FCoE.org.

Signed-off-by: Vasu Dev 
Acked-by : Robert Love 
Tested-by: Ross Brattain 
Acked-by: Bhanu Prakash Gollapudi 
Signed-off-by: James Bottomley

[SCSI] libfc: Add support for FDMI

2012-02-19T14:08:58+00:00

This patch adds support for Fabric Device Management
Interface as per FC-GS-4 spec. in libfc. Any driver
making use of libfc can enable fdmi state machine
for a given lport.

If lport has enabled FDMI support the lport state
machine will transition into FDMI after completing
the DNS states and before entering the SCR state.
The FDMI state transition is such that if there is an
error, it won't stop the lport state machine from
transitioning and the it will behave as if there was
no FDMI support.

The FDMI HBA attributes are registed with the Management
server via Register HBA (RHBA) command and the port
attributes are reigstered using the Register Port(RPA)
command.

Signed-off-by: Neerav Parikh 
Tested-by: Ross Brattain 
Acked-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfc: Declare local functions static

2012-01-16T08:45:48+00:00

Avoid that sparse complains about missing declarations for local
functions by declaring these static or by adding an #include directive.
Add the __percpu annotation where it is missing.

Signed-off-by: Bart Van Assche 
Reviewed-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfc: cache align struct fc_exch fields

2011-10-02T17:56:26+00:00

cache aligned xid and ex_lock beside
removing holes.

Signed-off-by: Vasu Dev 
Tested-by: Ross Brattain 
Signed-off-by: Yi Zou 
Signed-off-by: James Bottomley

[SCSI] libfc: cache align struct fc_fcp_pkt fields

2011-10-02T17:55:07+00:00

Re-arrange its fields to avoid padding and have better
cacheline alignments.

Removed not used start_time, end_time and last_pkt_time
fields.

This all reduced this struct size to 448 from 480 and
that also reduced one cacheline on x86_64 beside
eliminating 8 pads. However kept logical fields together.

Signed-off-by: Vasu Dev 
Tested-by: Ross Brattain 
Signed-off-by: Yi Zou 
Signed-off-by: James Bottomley