linux.git/drivers/scsi/fcoe, branch v2.6.33

[SCSI] fcoe: Only rmmod fcoe.ko if there are no active connections

2010-02-17T15:57:05+00:00

Currently we're gracefully tearing down each active connection
when fcoe.ko is removed. We shouldn't allow the user to destroy
connections by removing the module. We should force the user to
destroy each connection and then the module can be removed.

This patch makes it so a refrerence count on the module is taken
each time a fcoe_interface is created. The reference count
is dropped when the fcoe_interface is destroyed. This makes it
so that module_exit() doesn't get called unless all fcoe_interfaces
have been destroyed.

This patch leaves the removal of interfaces in the module_exit
routine so that if the user does a 'rmmod -f' we'll clean everything
up before removing the module.

The module_put line was put before the out_putdev goto line because
we should only be decrementing the reference count if a
fcoe_interface is actually destroyed. If we can't find the netdev
or the fcoe_interface then it's assumed that something else has
destroyed the fcoe_interface and it would have decremented the
reference count at that time.

Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe: Send port LKA every FIP_VN_KA_PERIOD secs.

2010-02-17T15:57:03+00:00

libfcoe module doesnt send port keep alive every
FIP_VN_KA_PERIOD due to improper assignment of timeout value.
Update the port_ka_time appropriately by incrementing it by
FIP_VN_KA_PERIOD in fcoe_ctlr_timeout(), so that the link_work
is scheduled to send the port LKA.

Signed-off-by: Bhanu Gollapudi 
Acked-by: Joe Eykholt 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

Merge branch 'cpumask-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

2009-12-18T01:00:20+00:00

* 'cpumask-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  cpumask: rename tsk_cpumask to tsk_cpus_allowed
  cpumask: don't recommend set_cpus_allowed hack in Documentation/cpu-hotplug.txt
  cpumask: avoid dereferencing struct cpumask
  cpumask: convert drivers/idle/i7300_idle.c to cpumask_var_t
  cpumask: use modern cpumask style in drivers/scsi/fcoe/fcoe.c
  cpumask: avoid deprecated function in mm/slab.c
  cpumask: use cpu_online in kernel/perf_event.c

cpumask: use modern cpumask style in drivers/scsi/fcoe/fcoe.c

2009-12-17T01:13:16+00:00

Signed-off-by: Rusty Russell 
Cc: "James E.J. Bottomley" 
Cc: Robert Love 
Cc: Chris Leech 
Cc: linux-scsi@vger.kernel.org

[SCSI] fcoe, libfc: adds enable/disable for fcoe interface

2009-12-12T22:30:34+00:00

This is to allow fcoemon util to enable or disable a fcoe interface
according to DCB link state change.

Adds sysfs module param enable and disable for this and also
updates existing other module param description to be consistent
and more accurate since older description had double "fcoe" word
with less meaningful netdev reference to user space.

Adds code to ignore redundant fc_lport_enter_reset handling for a
already disabled fcoe interface by checking LPORT_ST_DISABLED
or LPORT_ST_LOGO states, this also prevents lport state transition
on link flap on a disabled interface.

Above changes required lport state transition to get out of
disabled or logo state on call to fc_fabric_login.

Signed-off-by: Vasu Dev 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe: Use LLD's WWPN and WWNN for lport if LLD supports ndo_fcoe_get_wwn

2009-12-10T15:45:53+00:00

If the LLD wants its own WWNN/WWPN to be used, it should implement the
netdev_ops.ndo_fcoe_get_wwn(). If that is the case, we query the LLD and use
the queried WWNN/WWPN from the LLD.

Signed-off-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] fcoe, libfc: add get_lesb() to allow LLD to fill the link error status block (LESB)

2009-12-04T18:01:58+00:00

Add a member function pointer as get_lesb to libfc_function_template so LLD
can fill the LESB based on its own statistics. For fcoe, it fills the LESB
as a fcoe_fc_els_lesb struct according to FC-BB-5.

Signed-off-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe: add tracking FIP Missing Discovery Advertisement count

2009-12-04T18:01:56+00:00

Add tracking the Missing Discovery Advertisement count for FIP Fiber Channel
Forwarder (FCF) as described in FC-BB-5 Rev2.0 for LESB. The time is 1.5 times
the FKA_ADV_PERIOD of the corresponding FCF.

Signed-off-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe: add tracking FIP Virtual Link Failure count

2009-12-04T18:01:56+00:00

Add tracking the Virtual Link Failure count when either we have found
the FCF as "aged" or we are receiving FIP Clear Virtual Link from the
FCF.

Signed-off-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley

[SCSI] libfcoe: add checking disable flag in FIP_FKA_ADV

2009-12-04T18:01:55+00:00

When the D bit is set if the FKA_ADV_Period of the FIP Discovery
Advertisement, the ENode should not transmit period ENode FIP Keep Alive and
VN_Port FIP Keep Alive (FC-BB-5 Rev2, 7.8.3.13).

Note that fcf->flags is taken directly from the fip_header, I am claiming one
bit for the purpose of the FIP_FKA_Period D bit as FIP_FL_FK_ADV_B, and use
FIP_HEADER_FLAGS as bitmask for bits used in fip_header.

Signed-off-by: Yi Zou 
Signed-off-by: Robert Love 
Signed-off-by: James Bottomley