FCoE Related Fixes
- Correct find-next-FCF routine so that it searches at next FCF rather
  than current one.
- Enhanced round-robin FCF failover algorithm to re-start on "New FCF"
  async event
- Update the manner in which we look at FCFs while they may be in
  their discovery state.
- Use LPFC_FCOE_NULL_VID macro when checkinf for valid vlan_id for FCF
Signed-off-by: NAlex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

- BSG interface related:
  - Fix node reference count if node is active
  - Warn if we're overwriting an active CT context

- Discovery related:
  - Clear "Ignore Reg Login" flag when purging mailbox queue
  - Pay attention to return code for fc_block_scsi_eh()
  - Stall device loss code if we're almost done when it fires
    (we're logged in, but PRLI is outstanding)

- Bugs
  - Correct DIF code for endianness issues
  - Correct where we had missed points to check txq on i/o
    completion/cleanup
Signed-off-by: NAlex Iannicelli <alex.iannicelli@emulex.com>
Signed-off-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Setting the resource type in the ipr_update_res_entry function was incorrect in
that the top 4 bits were masked off.  The assignment has been updated to no
longer mask those bits.

Then, two new attributes were added to allow the user space utilities to more
easily get information.  The resource_type sdev attribute is set for all devices
in the adapter's configuration table and indicates the type of device.  The
fw_type shost attribute indicates the firmware type supported by the adapter.

Finally, the resource_path attribute was changed to be mode S_IRUGO.
Signed-off-by: NWayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: NBrian King <brking@linux.vnet.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

The method of transitioning to operational for new adapters includes using
initialization stages.  The current stage is indicated via a register read.
The final good stage in the sequence is "operational" but does not necessarily
indicate that the driver can proceed.  There is another bit that gets set in the
adapter->host interrupt register when the adapter has completed enough of its
bringup such that it can accept commands.  The driver was not checking that
bit before proceeding which led to intermittent errors and adapter resets.

The fix is to check the "transition to operational" bit in the interrupt
register after detecting that the initialization stage is "operational" and
only proceed if both are set.
Signed-off-by: NWayne Boyer <wayneb@linux.vnet.ibm.com>
Acked-by: NBrian King <brking@linux.vnet.ibm.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

be2iscsi driver should #include linux/if_ether.h since it uses
sysfs_format_mac().

It should also depend on NET since it selects SCSI_ISCSI_ATTRS,
which depends on NET.

These changes fix a build error when CONFIG_NET is not enabled:
ERROR: "sysfs_format_mac" [drivers/scsi/be2iscsi/be2iscsi.ko] undefined!
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch fixes a bug where the buffer was being freed as soon as
 submission to HW is done.
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch removes a Debug Print in the IO path
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch limits max_xmit_length to 64K incase older
utilities are used
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch ensures that the same ITT is maintained across
all login pdu's
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

These changes allow the driver to support crashdump. We need to reset the
chip incase of a crashdump
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch  frees tags that are already allocated in case of
failure
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch handles request_irq failures  by properly cleaning up
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

hwi_enable_intr need not return any value. This patch fixes the
that and removes code designed to handle a failure return value
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch frees up the allocated cid and returns error if allocation
of tag fails.
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch passes on  the value returned by
beiscsi_open_conn
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Fixing some functions return values that did not match with
the possible return values
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch fixes the return values as per comment from Mike Christie
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

The latest checkpatch.pl throws some new warnings. Fixing it
to get rid of a bunch of warnings
Signed-off-by: NJayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Commit

commit 2c3c8bea
Author: Chris Wright <chrisw@sous-sol.org>
Date:   Wed May 12 18:28:57 2010 -0700

    sysfs: add struct file* to bin_attr callbacks

Added an extra struct file * parameter at the beginning, which the
arcmsr binary attribute additions didn't have.  Fix this to prevent
nasty crashes.

Cc: Nick Cheng <nick.cheng@areca.com.tw>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch removes malloc(), free(), and printf() wrappers from the aic7xxx
SCSI driver. I didn't use pr_debug for printf because of some 'clever' uses of
printf don't compile with the pr_debug. I didn't fix the overeager uses of
GFP_ATOMIC either because I wanted to keep this patch as simple as possible.

[jejb:fixed up checkpatch errors and fixed up missed conversion]
Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi>
Acked-by: NHannes Reinecke <hare@suse.de>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NCyril Jayaprakash <cyril.jayaprakash@gmail.com>
Acked-by: NAnil Ravindranath <anil_ravindranath@pmc-sierra.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NKaren Higgins <karen.higgins@qlogic.com>
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Signed-off-by: Vikas Chaudhary <Vikas Chaudhary@qlogic.com>
Signed-off-by: NKaren Higgins <karen.higgins@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Handle one H/W Interrupt at a time to prevent holding off H/W lock
for longer period of time.
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Fixed the DMA allocated memory freeing which wasn't taken care
in many cases.
Signed-off-by: NPrasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Handle fw_state "auto discovery in progress" correctly
to avoid marking adapter as offline.
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Once the device goes *missing*, driver blocks the session
ie iscsi_block_session() to stall the I/O.  So after device
comes back *online*, driver needs to unblock the session ie
iscsi_unblock_session(), else I/Os will fail even if
ddb_state is ONLINE.
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

If fw ddb state is ACTIVE mark driver ddb stat as ONLINE and
unblock iscsi session.
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NRavi Anand <ravi.anand@qlogic.com>
Reviewed-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

- Add debugfs support to obtain firmware trace, driver trace
  and read/write to registers.

- debugfs hierarchy:
  /sys/kernel/debug/bfa/host#
   where the host number corresponds to the one under /sys/class/scsi_host/host#

- Following are the new debugfs entries added:
  drvtrc: collect current driver trace
  fwtrc: collect current firmware trace.
  fwsave: collect last saved fw trace as a result of firmware crash.
  regwr: write one word to chip register
  regrd: read one or more words from chip register.
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Update driver version to 2.2.2.1
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch fixes 3 bugs in vport create/delete.
1) Replace scsi_add_host() with scsi_add_host_with_dma()
2) Fix rmmod hang when there are vports configured. This is due to a race
condition between the workqueue destroy in pci remove context and the vport
delete works being handled. The fix is to use a counter to track the
vport delete work, so that workqueue destroy will not be called until all
configured vports are deleted from workqueue.
3) Fix rmmmod crash when there are PBC vport configured. PBC is not allowed
to be deleted dynamically. However, if someone try to delete it, it leaves the
vport is wrong state. The fix is to restore the vport back to original state
when the attempt to delete pbc vport delete is failed.
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch fixes the issue of passing wrong argument to callback function.
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

This patch adds ioc state checking while enabling a port.
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Add description for bfa driver module parameters.
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

Update bfa driver API and data structure to support BOFM (IBM BladeCenter
Open Fabric Manager).
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

While processing the ioim in callback functions, the ioim is still in io_q.
During this time, if the itnim goes offline, the ioim is requeued from
itnim->io_q into itnim->delay_comp_q although the request is already completed.
This results in requeing the ioim into the callback queue if the ioim is not
freed by the time the ioim is requeued. This results in double completion of
the ioim. To fix this, whenever a response is received from firmware for an
ioim, deque it from io_q and enque to fcpim->comp_q. This will eliminate any
possibility of itnim picking any ioim for which the response is already
received.
Signed-off-by: NJing Huang <huangj@brocade.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>