linux-toradex.git/drivers/scsi/fcoe/fcoe.h, branch v4.10

fcoe: Use default VLAN for FIP VLAN discovery

2016-07-27T04:32:08+00:00

FC-BB-6 states: FIP protocols shall be performed on a per-VLAN basis. It
is recommended to use the FIP VLAN discovery protocol on the default
VLAN.

Signed-off-by: Hannes Reinecke 
Acked-by: Johannes Thumshirn 
Signed-off-by: Martin K. Petersen

libfc, libfcoe, fcoe: Convert debug_logging macros to pr_info

2012-12-14T18:38:55+00:00

Convert libfc, libfcoe and fcoe's debug_logging macros
to use pr_info() instead of printk(KERN_INFO, ...). checkpatch.pl
now complains about this, so convert libfcoe to preferred
method.

Signed-off-by: Robert Love 
Tested-by: Marcus Dennis

[SCSI] fcoe: Fix write errors on NPIV ports

2012-10-07T10:49:34+00:00

SCSI errors were generated while writing to LUNs
connected via NPIV ports.

Debugging this it was found that the FCoE packets
transmitted via the NPIV ports were not tagged with
correct user priority as negotiated with peer by DCB
agent. This resulted in FCoE traffic going with priority
zero(0) that did not have priority flow control (PFC)
enabled for it. The initiator after transferring data
to the target never saw any reply indicating the transfer
was complete. This resulted in error recovery (ABTS) and
SCSI command retries by the scsi-mid layer; eventually
resulting in I/O errors.

This patch fixes this issue by keeping the FCoE user
priority information in the fcoe_interface instance
that is common for both the physical port as well as
NPIV ports connected to that physical port; instead
of storing it in fcoe_port structure that has a per
port instance.

Signed-off-by: Neerav Parikh 
Acked-by: Yi Zou 
Acked-by: John Fastabend 
Tested-by: Marcus Dennis 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe: Allocate fcoe_ctlr with fcoe_interface, not as a member

2012-05-23T08:36:27+00:00

Currently the fcoe_ctlr associated with an interface is allocated
as a member of struct fcoe_interface. This causes problems when
attempting to use the new fcoe_sysfs APIs which allow us to allocate
the fcoe_interface as private data to the fcoe_ctlr_device instance.
The problem is that libfcoe wants to be able use pointer math to find a
fcoe_ctlr's fcoe_ctlr_device as well as finding a fcoe_ctlr_device's
assocated fcoe_ctlr. To do this we need to allocate the
fcoe_ctlr_device, with private data for the LLD. The private data
contains the fcoe_ctlr and its private data is the fcoe_interface.
This patch only allocates the fcoe_interface with the fcoe_ctlr, the
fcoe_ctlr_device will be added in a later patch, which will complete
the below diagram-

+------------------+
| fcoe_ctlr_device |
+------------------+
| fcoe_ctlr        |
+------------------+
| fcoe_interface   |
+------------------+

This prep work will allow us to go from a fcoe_ctlr_device instance
to its fcoe_ctlr as well as from a fcoe_ctlr to its fcoe_ctlr_device
once the fcoe_sysfs API is in use (later patches in this series).

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

[SCSI] fcoe: remove lport from net device before doing per cpu rx thread cleanup

2012-05-10T07:59:24+00:00

Remove lport from net device and then do synchronize net device to flush
inflight rx frames for the lport before doing fcoe_percpu_clean.

In case of master lport, remove all rx packet handlers completely and
then only do fcoe_percpu_clean. This required splitting fcoe_interface_cleanup
to do remove part separately and for that added func fcoe_interface_remove
and then  call it from fcoe_if_destory before doing fcoe_percpu_clean.
However if fcoe_interface_remove() is already called then
don't call again from fcoe_interface_cleanup() to preserve its
existing flows.

This patch along with Neil's other patch to avoid soft irq context
on ingress will avoid passing up frames on disabled lport as
discussed in this mail thread:-
http://lists.open-fcoe.org/pipermail/devel/2012-February/011947.html

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

[SCSI] fcoe: Remove reference counting on 'stuct fcoe_interface'

2012-02-19T15:25:41+00:00

The reference counting was necessary on these instances
because it was possible for NPIV ports to be destroyed
after the N_Port. A previous patch ensures that all NPIV
ports are destroyed before the N_Port making the need to
track references on the interface unnecessary.

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

[SCSI] fcoe: Move fcoe_debug_logging from fcoe.h to fcoe.c

2012-01-16T08:46:31+00:00

Move the definition of the global variable fcoe_debug_logging
from fcoe.h to fcoe.c. Avoid that sparse complains about missing
declarations for local functions or variables by declaring these
static.

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

[SCSI] fcoe: use real dev in case of HW vlan acceleration

2011-10-02T17:57:12+00:00

Use real dev in case it has HW vlan acceleration
support since in this case the real dev would
do needed vlan processing, this way unnecessary
vlan layer processing avoided and it gives
slightly better IOPS with 512B size IOs.

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

[SCSI] fcoe: Move common functions to fcoe_transport library

2011-08-27T14:35:46+00:00

Export fcoe_get_wwn, fcoe_validate_vport_create and fcoe_wwn_to_str so that all
LLDs can use these common function.

Signed-off-by: Bhanu Prakash Gollapudi 
Signed-off-by: James Bottomley

[SCSI] fcoe: Prevent creation of an NPIV port with duplicate WWPN

2011-05-24T16:36:29+00:00

This patch adds a validation step before allowing creation of a new NPIV port.
It checks whether the WWPN passed for the new NPIV port to be created is unique
for the given physical port.

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