GitHub/LineageOS/android_kernel_motorola_exynos9610.git
15 years ago[SCSI] zfcp: Use common code definitions for FC ELS structs
Christof Schmitt [Tue, 24 Nov 2009 15:54:09 +0000 (16:54 +0100)]
[SCSI] zfcp: Use common code definitions for FC ELS structs

Use common code definitions for FC plogi, logo, rscn and adisc structs
instead of inventing private ones. Move the private struct for issuing
ELS ADISC inside zfcp to zfcp_fc header file.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Update FCP protocol related code
Christof Schmitt [Tue, 24 Nov 2009 15:54:08 +0000 (16:54 +0100)]
[SCSI] zfcp: Update FCP protocol related code

Use common data structures for FCP CMND, FCP RSP and related
definitions and remove zfcp private definitions. Split the FCP CMND
setup and FCP RSP evaluation code in seperate functions. Use inline
functions to not negatively impact the I/O path.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport
Christof Schmitt [Tue, 24 Nov 2009 15:54:07 +0000 (16:54 +0100)]
[SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport

If an error occurs that triggers the call to fc_remote_port_delete,
ideally this call would happen before any I/O is passed back to the
SCSI midlayer through scsi_done. The SCSI midlayer will retry the
commands and fc_remote_port_chkready will return the correct status
code.  But with the delay between calling scsi_done in softirq context
and the call to fc_remote_port_delete from the workqueue, there is a
window where zfcp returns DID_ERROR. This leads to SCSI error recovery
which then leads to offline SCSI devices since all recovery actions
will fail with the rport now being blocked.

In this window, zfcp has to return DID_IMM_RETRY just as the FC
transport class would do in fc_remote_port_chkready for the blocked
fc_rport. As soon as the fc_rport is BLOCKED, fc_remote_port_chkready
will do the right thing.

Additionally, there are two more cases to catch in zfcp_scsi_queuecommand:
- After the port has been opened, the unit has to be opened. During
  this period I/O has to be retried. This can also be handled with
  DID_IMM_RETRY.
- If the access to the unit fails, but the port is good, then
  this single unit cannot be accessed and I/O to this unit has to fail
  without involving the FC transport class.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Assign scheduled work to driver queue
Swen Schillig [Tue, 24 Nov 2009 15:54:06 +0000 (16:54 +0100)]
[SCSI] zfcp: Assign scheduled work to driver queue

The port_scan work was scheduled to the work_queue provided by the
kernel. This resulted on SMP systems to a likely situation that more
than one scan_work were processed in parallel. This is not required
and openes the possibility of race conditions between the removal of
invalid ports and the enqueue of just scanned ports.  This patch
synchronizes the scan_work tasks by scheduling them to adapter local
work_queue.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Remove STATUS_COMMON_REMOVE flag as it is not required anymore
Swen Schillig [Tue, 24 Nov 2009 15:54:05 +0000 (16:54 +0100)]
[SCSI] zfcp: Remove STATUS_COMMON_REMOVE flag as it is not required anymore

The flag ZFCP_STATUS_COMMON_REMOVE was used to indicate that a
resource is not ready to be used or about to be removed from the
system. This is now better done by an improved list handling
and therefore the additional indicator is not required anymore.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Implement module unloading
Christof Schmitt [Tue, 24 Nov 2009 15:54:04 +0000 (16:54 +0100)]
[SCSI] zfcp: Implement module unloading

With the reference counting for zfcp data structures, it is now
possible to implement module unloading again. Module unloading
requires to free all data structures in the module exit function. This
is done by unregistering zfcp from s390 cio and the SCSI midlayer
first in the module exit function.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Merge trace code for fsf requests in one function
Christof Schmitt [Tue, 24 Nov 2009 15:54:03 +0000 (16:54 +0100)]
[SCSI] zfcp: Merge trace code for fsf requests in one function

The latencies traced per fsf request are traced for sysfs output and
for blktrace, each in one function. Simplify the tracing code by
merging both tracing functions into one.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Access ports and units with container_of in sysfs code
Christof Schmitt [Tue, 24 Nov 2009 15:54:02 +0000 (16:54 +0100)]
[SCSI] zfcp: Access ports and units with container_of in sysfs code

When accessing port and unit attributes, use container_of instead of
dev_get_drvdata. This eliminates some code checker warnings about
aliased access of data structures.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Remove suspend callback
Swen Schillig [Tue, 24 Nov 2009 15:54:01 +0000 (16:54 +0100)]
[SCSI] zfcp: Remove suspend callback

The callback for suspend is not required because it contains exactly
the same functionality as the _set_offline routine does.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Remove global config_mutex
Swen Schillig [Tue, 24 Nov 2009 15:54:00 +0000 (16:54 +0100)]
[SCSI] zfcp: Remove global config_mutex

The global config_mutex was required for the serialization of a
configuration change within the zfcp driver.  This global locking is
now obsolete and can be removed.  The requirement of serializing the
access to a zfcp_adapter reference via a ccw_device is realized wth a
static spinlock.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Replace local reference counting with common kref
Swen Schillig [Tue, 24 Nov 2009 15:53:59 +0000 (16:53 +0100)]
[SCSI] zfcp: Replace local reference counting with common kref

Replace the local reference counting by already available mechanisms
offered by kref. Where possible existing device structures were used,
including the same functionality.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] zfcp: Replace global config_lock with local list locks
Swen Schillig [Tue, 24 Nov 2009 15:53:58 +0000 (16:53 +0100)]
[SCSI] zfcp: Replace global config_lock with local list locks

The global config_lock was used to protect the configuration organized
in independent lists. It is not necessary to have a lock on driver
level for this purpose.  This patch replaces the global config_lock
with a set of local list locks.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Add target reset flag to FCP header file
Christof Schmitt [Tue, 24 Nov 2009 15:53:57 +0000 (16:53 +0100)]
[SCSI] libfc: Add target reset flag to FCP header file

While the target reset task management function has been deprecated in
newer specs, it is still in use by SCSI FC drivers and there is no
real replacement. Add the target reset flag to the FCP header file to
allow usage of this definition in SCSI FC drivers.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: add support of receiving ELS_RLS
Yi Zou [Fri, 20 Nov 2009 22:55:24 +0000 (14:55 -0800)]
[SCSI] libfc: add support of receiving ELS_RLS

Upon receiving ELS_RLS, send the Link Error Status Block (LESB) back.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe, libfc: add get_lesb() to allow LLD to fill the link error status block...
Yi Zou [Fri, 20 Nov 2009 22:55:19 +0000 (14:55 -0800)]
[SCSI] fcoe, libfc: add get_lesb() to allow LLD to fill the link error status block (LESB)

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 <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: add fcoe_fc_els_lesb to fc_fcoe.h for FC-BB-5 LESB definitions
Yi Zou [Fri, 20 Nov 2009 22:55:14 +0000 (14:55 -0800)]
[SCSI] libfc: add fcoe_fc_els_lesb to fc_fcoe.h for FC-BB-5 LESB definitions

Add struct fcoe_fc_els_lesb as described in FC-BB-5 LESB for FCoE. It has
the same size as LESB defined in FC-FS-3 (struct fc_els_lesb) but members
have different meanings according to FC-BB-5.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: add tracking FIP Missing Discovery Advertisement count
Yi Zou [Fri, 20 Nov 2009 22:55:08 +0000 (14:55 -0800)]
[SCSI] libfcoe: add tracking FIP Missing Discovery Advertisement count

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 <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: add tracking FIP Virtual Link Failure count
Yi Zou [Fri, 20 Nov 2009 22:55:02 +0000 (14:55 -0800)]
[SCSI] libfcoe: add tracking FIP Virtual Link Failure count

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 <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: add checking disable flag in FIP_FKA_ADV
Yi Zou [Fri, 20 Nov 2009 22:54:57 +0000 (14:54 -0800)]
[SCSI] libfcoe: add checking disable flag in FIP_FKA_ADV

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 <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: add FC-BB-5 LESB counters to fcoe_dev_stats
Yi Zou [Fri, 20 Nov 2009 22:54:52 +0000 (14:54 -0800)]
[SCSI] libfc: add FC-BB-5 LESB counters to fcoe_dev_stats

FC-BB-5 Rev2.0, Clause 7.10 extends the FC-LS-3 LESB for FC-BB_E. We are
already tracking Link Failure Count so add the rest in this patch.

For VLinkFailureCount and MissDiscAdvCount, they are part of the per-cpu
fcoe_dev_stats. For SymbolErrorCount, ErroredBlockCount, and FCSErrorCount,
they are defined in IEEE 802.3-2008 and are per LLD. They are expected to
come from LLD.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: allow SCSI-FCP to be processed directly in softirq context
Chris Leech [Fri, 20 Nov 2009 22:54:47 +0000 (14:54 -0800)]
[SCSI] fcoe: allow SCSI-FCP to be processed directly in softirq context

Allow FCP frames to bypass the FCoE receive processing threads and handle
them directly in softirq context, if they are received on the correct CPU.
This preserves the queuing to threads for scaling out receive processing
to multiple CPUs, but allows FCoE-aware multi-queue network drivers that
direct frames to the originating CPUs to handle FCP processing with less
scheduling latency.

Only FCP is handled directly, because libfc makes use of mutexes in ELS
handling routines.

The bulk of this change is just moving the FCoE receive processing out of
the receive thread function, leaving behind just the thread and queue
management.  The interesting bits are in fcoe_rcv()

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: fix payload size passed to fc_frame_alloc() in fc_lport_els_request
Yi Zou [Fri, 20 Nov 2009 22:54:41 +0000 (14:54 -0800)]
[SCSI] libfc: fix payload size passed to fc_frame_alloc() in fc_lport_els_request

Frame header room is already incluced, just pass the length of payload.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.6 : Update lpfc driver version to 8.3.6
James Smart [Wed, 18 Nov 2009 20:41:46 +0000 (15:41 -0500)]
[SCSI] lpfc 8.3.6 : Update lpfc driver version to 8.3.6

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.6 : Hardware related fixes and changes
James Smart [Wed, 18 Nov 2009 20:41:10 +0000 (15:41 -0500)]
[SCSI] lpfc 8.3.6 : Hardware related fixes and changes

Hardware related Fixes and Changes.
 - Added new Adapter IDs and update default Adapter names.
 - Added PCI read after EQarm doorbell PCI write to flush the write
   and avoid spurrious interrupts when in INTx mode.
 - Phase out use of ONLINE registers.
 - Fix for lost MSI interrupt

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.6 : Fix critical errors
James Smart [Wed, 18 Nov 2009 20:40:49 +0000 (15:40 -0500)]
[SCSI] lpfc 8.3.6 : Fix critical errors

Fix errors relating to crashes and hangs.
 - Fix crash due to list corruption while unloading driver.
 - Fix panic during pci-hot-plug testing.
 - Fix panic when unmapping luns.
 - Fixed total_scsi_bufs counting could cause exhausted memory.
 - Fixed locking issue causing hang.
 - Fixed the call from lpfc_new_scsi_buf_s3 to use lpfc_release_scsi_buf_s3.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.6 : Fix AER issues
James Smart [Wed, 18 Nov 2009 20:40:23 +0000 (15:40 -0500)]
[SCSI] lpfc 8.3.6 : Fix AER issues

Fix AER issues.
 - Made AER sysfs entry point return "Operation not permitted" to
   OneConnect HBAs
 - Stop and abort all I/Os on HBA for AER uncorrectable non-fatal error
   handling

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.6 : FC Protocol Fixes
James Smart [Wed, 18 Nov 2009 20:39:44 +0000 (15:39 -0500)]
[SCSI] lpfc 8.3.6 : FC Protocol Fixes

FC protocol fixes.
 - Fix send sequence logic to handle multi SGL IOCBs.
 - Fix FDISC completion always setting VPORT state to failed.
 - Ported the fix on reporting of max_vpi to uppper layer.
 - Fix incorrect number of Vports allowed to be created.
 - Fixed Dead FCoE port after creating vports.
 - Added handling of ELS request for Reinstate Recovery Qualifier (RRQ)
 - Handle unsolicited CT exchange initiator receiving CT exchange ABTS
 - Migrate LUN queue depth ramp up code to scsi mid-layer.
 - Made ABTS WQE go to the same WQ as the WQE to be aborted.
 - Fix Vport does not rediscover after FCF goes away.
 - Fixed lpfc_unreg_vfi failure after devloss timeout.
 - Fixed RPI bit leak.
 - Fix hbq pointer corruption during target discovery.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.6 : FCoE Protocol Fixes
James Smart [Wed, 18 Nov 2009 20:39:16 +0000 (15:39 -0500)]
[SCSI] lpfc 8.3.6 : FCoE Protocol Fixes

FCoE Protocol fixes.
 - Fixed FIP frame designation for ELS commands.
 - Fix CVL received on Port 1 not processed by driver.
 - Fix Zeroed frame on wire after FLOGI
 - Fix vport keep-alive does not contain the correct WWN.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] st: fix test of value range in st_set_options()
Roel Kluin [Tue, 17 Nov 2009 22:53:22 +0000 (14:53 -0800)]
[SCSI] st: fix test of value range in st_set_options()

value cannot logically be less than START and greater than BUFFERSIZE.

#define EXTENDED_SENSE_START  18

// vi include/scsi/scsi_cmnd.h +105
#define SCSI_SENSE_BUFFERSIZE  96

[akpm@linux-foundation.org: fix warning]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fix func names in kernel-doc
Randy Dunlap [Tue, 17 Nov 2009 22:53:20 +0000 (14:53 -0800)]
[SCSI] fix func names in kernel-doc

Fix scsi_devinfo.c kernel-doc function names to match actual function
names.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] osd_protocol.h: Add missing #include
Martin Michlmayr [Mon, 16 Nov 2009 18:49:25 +0000 (20:49 +0200)]
[SCSI] osd_protocol.h: Add missing #include

include/scsi/osd_protocol.h uses ALIGN() without an #include
<linux/kernel.h>, leading to:
| include/scsi/osd_protocol.h:362: error: implicit declaration of function 'ALIGN'

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libosd: Error handling revamped
Boaz Harrosh [Mon, 16 Nov 2009 18:48:38 +0000 (20:48 +0200)]
[SCSI] libosd: Error handling revamped

Administer some love to the osd_req_decode_sense function

* Fix a bad bug with osd_req_decode_sense(). If there was no scsi
  residual, .i.e the request never reached the target, then all the
  osd_sense_info members where garbage.

* Add grossly missing in/out_resid to osd_sense_info and fill them in
  properly.

* Define an osd_err_priority enum which divides the possible errors into
  7 categories in ascending severity. Each category is also assigned a
  Linux return code translation.

  Analyze the different osd/scsi/block returned errors and set the
  proper osd_err_priority and Linux return code accordingly.

* extra check a few situations so not to get stuck with inconsistent
  error view. Example an empty residual with an error code, and other
  places ...

Lots of libosd's osd_req_decode_sense clients had this logic in some
form or another. Consolidate all these into one place that should
actually know about osd returns. Thous translating it to a more
abstract error.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libosd: Bugfix of error handling in attributes-list decoding
Boaz Harrosh [Mon, 16 Nov 2009 18:47:47 +0000 (20:47 +0200)]
[SCSI] libosd: Bugfix of error handling in attributes-list decoding

When an error was detected in an attribute list do to
a target bug. We would print an error but spin endlessly
regardless. Fix it.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libosd: bug in osd_req_decode_sense_full()
Boaz Harrosh [Mon, 16 Nov 2009 18:47:07 +0000 (20:47 +0200)]
[SCSI] libosd: bug in osd_req_decode_sense_full()

The (never tested) osd_sense_attribute_identification case
has never worked. The loop was never advanced on.
Fix it to work as intended.

On 10/30/2009 04:39 PM, Roel Kluin wrote:
  I found this by code analysis, searching for while
  loops that test a local variable, but do not modify
  the variable.

Reported-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libosd: osd_dev_info: Unique Identification of an OSD device
Boaz Harrosh [Sun, 29 Nov 2009 14:26:45 +0000 (16:26 +0200)]
[SCSI] libosd: osd_dev_info: Unique Identification of an OSD device

Define an osd_dev_info structure that Uniquely identifies an OSD
device lun on the network. The identification is built from unique
target attributes and is the same for all network/SAN machines.

osduld_info_lookup() - NEW
    New API that will lookup an osd_dev by its osd_dev_info.
    This is used by pNFS-objects for cross network global device
    identification. And by exofs multy-device support, the device
    info is specified in the on-disk exofs device table.

osduld_device_info() - NEW
    Given an osd_dev handle returns its associated osd_dev_info.
    The ULD fetches this information at startup and hangs it on
    each OSD device. (This is a fast operation that can be called
    at any condition)

osduld_device_same() - NEW
    With a given osd_dev at one hand and an osd_dev_info
    at another, we would like to know if they are the same
    device.
    Two osd_dev handles can be checked by:
        osduld_device_same(od1, osduld_device_info(od2));

osd_auto_detect_ver() - REVISED
    Now returns an osd_dev_info structure. Is only called once
    by ULD as before. See added comments for how to use.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] osduld: Use device->release instead of internal kref
Boaz Harrosh [Sun, 29 Nov 2009 14:25:26 +0000 (16:25 +0200)]
[SCSI] osduld: Use device->release instead of internal kref

The true logic of this patch will be clear in the next patch where we
use the class_find_device() API. When doing so the use of an internal
kref leaves us a narrow window where a find is started while the actual
object can go away. Using the device's kobj reference solves this
problem because now the same kref is used for both operations. (Remove
and find)

Core changes
* Embed a struct device in uld_ structure and use device_register
  instead of devie_create. Set __remove to be the device release
  function.
* __uld_get/put is just get_/put_device. Now every thing is accounted
  for on the device object. Internal kref is removed.
* At __remove() we can safely de-allocate the uld_ structure. (The
  function has moved to avoid forward declaration)

Some cleanups
* Use class register/unregister is cleaner for this driver now.
* cdev ref-counting games are no longer necessary

I have incremented the device version string in case of new bugs.

Note: Previous bugfix of taking the reference around fput() still
      applies.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] osduld: Ref-counting bug fix
Boaz Harrosh [Mon, 16 Nov 2009 18:44:02 +0000 (20:44 +0200)]
[SCSI] osduld: Ref-counting bug fix

If scsi has released the device (logout), and exofs has last
reference on the osduld_device it will be freed by
osd_uld_release() within the call to fput(). But this will
oops in cdev_release() which is called after the fops->release.
(cdev is embedded within osduld_device). __uld_get/put pair
makes sure we have a cdev for the duration of fput()

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libosd: osd_sense: OSD_CFO_PERMISSIONS
Boaz Harrosh [Mon, 16 Nov 2009 18:41:03 +0000 (20:41 +0200)]
[SCSI] libosd: osd_sense: OSD_CFO_PERMISSIONS

Add one more important cdb_field_offset that can be returned with
scsi_invalid_field_in_cdb. It is the offset of the permissions_bit_mask
field in the capabilities structure.

Interestingly, the offset is the same for V1/V2

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libosd: osd_dev_is_ver1 - Minor API cleanup
Boaz Harrosh [Mon, 16 Nov 2009 18:39:25 +0000 (20:39 +0200)]
[SCSI] libosd: osd_dev_is_ver1 - Minor API cleanup

define a new osd_dev_is_ver1 that operates on devices
and the old osd_req_is_ver1 uses that new API.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.5: Update the lpfc driver version to 8.3.5
James Smart [Fri, 2 Oct 2009 19:17:08 +0000 (15:17 -0400)]
[SCSI] lpfc 8.3.5: Update the lpfc driver version to 8.3.5

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.5: fix fcp command polling, add FIP mode, performance optimisations...
James Smart [Fri, 2 Oct 2009 19:17:02 +0000 (15:17 -0400)]
[SCSI] lpfc 8.3.5: fix fcp command polling, add FIP mode, performance optimisations and devloss timout fixes

This patch includes the following changes:
- Fixed Panic/Hang when using polling mode for fcp commands
- Added support for Read_rev mbox bits indicating FIP mode of HBA
- Optimize performance of slow-path handling of els responses
- Add code to cleanup orphaned unsolicited receive sequences
- Fixed Devloss timeout when multiple initiators are in same zone

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.5: Add AER support
James Smart [Fri, 2 Oct 2009 19:16:56 +0000 (15:16 -0400)]
[SCSI] lpfc 8.3.5: Add AER support

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.5: fix sysfs parameters, vport creation and other bugs and update...
James Smart [Fri, 2 Oct 2009 19:16:51 +0000 (15:16 -0400)]
[SCSI] lpfc 8.3.5: fix sysfs parameters, vport creation and other bugs and update logging

This patch include the following fixes and changes:
- Fix crash when "error" is echoed to board_mode sysfs parameter
- Fix FCoE Parameter parsing in regions 23
- Fix driver crash when creating vport with large number of targets on SLI4
- Fix bug with npiv message being logged when it is not supported by the adapter
- Fix a potential dereferencing mailbox structure after free bug
- Fix firmware crash after vport create with high target count
- Error out requests to set board_mode to warm restart via sysfs on SLI4 HBAs
- Fix Block guard logging
- Fix a memory corruption issue during GID_FT IO prep
- Fix crash while processing unsolicited FC frames
- Fix failed to allocate XRI message is not a critical failure
- Update and fix formatting in some log messages
- Fix missing new line characters in log messages
- Removed the use of the locally defined FC transport layer related macros
- Check the rsplen in lpfc_handle_fcp_err function before using rsplen

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.5: fix VPI registration, error clean up and add support for vlink...
James Smart [Fri, 2 Oct 2009 19:16:45 +0000 (15:16 -0400)]
[SCSI] lpfc 8.3.5: fix VPI registration, error clean up and add support for vlink events

This patch includes the following fixes and new features:
- Fix mask size for CT field in WQE
- Fix VPI base not used when unregistering VPI on port 1.
- Fix UNREG_VPI mailbox command to unreg the correct VPI
- Fixed Check for aborted els command
- Fix error when trying to load driver with wrong firmware on FCoE HBA.
- Fix bug with probe_one routines not putting the Scsi_Host back upon error
- Add support for Clear Virtual Link Async Events
- Add support for unsolicited CT exchange sequence abort
- Add 0x0714 OCeXXXXX PCI ID

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] lpfc 8.3.5: fix reset path, ELS ordering and discovery issues
James Smart [Fri, 2 Oct 2009 19:16:39 +0000 (15:16 -0400)]
[SCSI] lpfc 8.3.5: fix reset path, ELS ordering and discovery issues

This patch includes the following fixes:
- Fixed panic during HBA reset.
- Fixed FCoE event tag passed in resume_rpi.
- Fix out of order ELS commands
- Fixed discovery issues found during VLAN testing.
- Fix UNREG_VPI failure on extended link pull
- Fixed crash while processing unsolicited FC frames.
- Clear retry count in the delayed ELS handler
- Fixed discovery failure during quick link bounce.

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libiscsi: hook into ramp up/down handling
Mike Christie [Wed, 11 Nov 2009 22:34:36 +0000 (16:34 -0600)]
[SCSI] libiscsi: hook into ramp up/down handling

It is rare to get a queue full with iscsi, because targets seem to
just reduce the iscsi cmd window. However, there is at least
one iscsi target that will throw a queue full when overloaded.
This hooks the iscsi code in to the ramp up/down code, so we
can handle it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] iser: set tgt and lu reset timeout
Mike Christie [Wed, 11 Nov 2009 22:34:35 +0000 (16:34 -0600)]
[SCSI] iser: set tgt and lu reset timeout

When iser enabled lu reset support it did not set the
bit to allow userspace to get/set the timeout. This
sets the tgt and lu reset timeout bits.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] iscsi class: modify handling of replacement timeout
Mike Christie [Wed, 11 Nov 2009 22:34:34 +0000 (16:34 -0600)]
[SCSI] iscsi class: modify handling of replacement timeout

This patch modifies the replacement/recovery_timeout so it works
more like the fc fast io fail tmo.

If userspace tries to set the replacement/recovery_timeout to less than
zero, we will turn off the forced recovery cleanup.

If userspace sets the value to 0 then we will force the recovery
cleanup immediately.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libiscsi: add warm target reset tmf support
Mike Christie [Wed, 11 Nov 2009 22:34:33 +0000 (16:34 -0600)]
[SCSI] libiscsi: add warm target reset tmf support

This implements warm target reset tmf support for
the scsi-ml target reset callback. Previously we would
just drop the session in that callback. This patch will
now try a target reset and if that fails drop the session.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libiscsi: Check TMF state before sending PDU
Mike Christie [Wed, 11 Nov 2009 22:34:32 +0000 (16:34 -0600)]
[SCSI] libiscsi: Check TMF state before sending PDU

Patch and mail from both MikeC and HannesR:

Before we're trying to send a PDU we have to check whether a TMF
is active. If so and if the PDU will be affected by the TMF
we should allow only Data-out PDUs to be sent.

If fast_abort is set, no Data-out PDUs will be sent while
a LUN reset is being processed for a affected LUN.

fast_abort is now ingored during a ABORT TASK tmf. We will not
send any Data-outs for a task if the task is being aborted.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libiscsi: fix login/text checks in pdu injection code
Mike Christie [Wed, 11 Nov 2009 22:34:31 +0000 (16:34 -0600)]
[SCSI] libiscsi: fix login/text checks in pdu injection code

For some reason we used to check for the the immediate bit
set and the opcocde in many places instead of just masking
the opcode. In the passthrough code this is a problem
because userspace may or may not have set the immediate bit
and it does not have to. This fixes up the opcode checks
in the passthrough code, so we mask off the opcode then
check against the iscsi proto definition like is done in
other places.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] bnx2i: use common iscsi suspend queue
Mike Christie [Wed, 11 Nov 2009 22:34:30 +0000 (16:34 -0600)]
[SCSI] bnx2i: use common iscsi suspend queue

This just has bnx2i use the iscsi_suspend_queue helper.

The suspend works as follows:

When ep_poll has succeeed iscsid will call conn_bind, the LLD will
then call iscsi_conn_bind which will clear the suspend bit.
When ep_disconnect is called (or if there is a conn error) we set
the suspend bit. For the ep_disconnect case I  added a helper
in the previous kernel that will take the session lock to make sure
iscsi_queuecommand/xmit_task is not running and it will set
the suspend bit.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Anil Veerabhadrappa <anilgv@broadcom.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] scsi_devinfo: update Hitachi entries (v2)
Takahiro Yasui [Tue, 10 Nov 2009 21:22:19 +0000 (16:22 -0500)]
[SCSI] scsi_devinfo: update Hitachi entries (v2)

Four models, OPEN-/DF400/DF500/DISK-SUBSYSTEM, can handle REPORT_LUN,
and the BLIST_REPORTLUN2 flag needs to be set. And DF600 doesn't require
any flags because it returns ANSI 03h (SPC).

Signed-off-by: Takahiro Yasui <tyasui@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] add scsi target reset support to scsi ioctl
Mike Christie [Thu, 5 Nov 2009 17:37:28 +0000 (11:37 -0600)]
[SCSI] add scsi target reset support to scsi ioctl

The scsi ioctl code path was missing scsi target reset
support. This patch just adds it.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fc class: fail fast bsg requests
Mike Christie [Thu, 5 Nov 2009 17:18:09 +0000 (11:18 -0600)]
[SCSI] fc class: fail fast bsg requests

If the port state is blocked and the fast io fail tmo has
fired then this patch will fail bsg requests immediately.
This is needed if userspace is sending IOs to test the transport
like with fcping, so it will not have to wait for the dev loss tmo.
With this patch he bsg req fast io fail code behaves like the normal
and sg io/passthrough fast io fail.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-By: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] pm8001: Fixes for tag alloc, error goto and code cleanup
jack_wang [Thu, 5 Nov 2009 14:33:51 +0000 (22:33 +0800)]
[SCSI] pm8001: Fixes for tag alloc, error goto and code cleanup

Allocate right size for bitmap tag,fix error goto and cleanup print
message and undocable commemts. patch attached.

Signed-off-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] pm8001: enhance IOMB process modules
jack_wang [Thu, 5 Nov 2009 14:33:35 +0000 (22:33 +0800)]
[SCSI] pm8001: enhance IOMB process modules

We set interupt cascading count of outbound queue to get better
performance, correct some unnecessary return values and some noisy
print messages.  patch attached.

Signed-off-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] pm8001: add reinitialize SPC parameters before phy start
jack_wang [Thu, 5 Nov 2009 14:32:31 +0000 (22:32 +0800)]
[SCSI] pm8001: add reinitialize SPC parameters before phy start

Signed-off-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] scsi_lib_dma: fix bug with dma maps on nested scsi objects
James Bottomley [Thu, 5 Nov 2009 19:33:12 +0000 (13:33 -0600)]
[SCSI] scsi_lib_dma: fix bug with dma maps on nested scsi objects

Some of our virtual SCSI hosts don't have a proper bus parent at the
top, which can be a problem for doing DMA on them

This patch makes the host device cache a pointer to the physical bus
device and provides an extra API for setting it (the normal API picks
it up from the parent).  This patch also modifies the qla2xxx and lpfc
vport logic to use the new DMA host setting API.

Acked-By: James Smart <james.smart@emulex.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] scsi_dh: create sysfs file, dh_state for all SCSI disk devices
Chandra Seetharaman [Fri, 11 Sep 2009 17:20:35 +0000 (10:20 -0700)]
[SCSI] scsi_dh: create sysfs file, dh_state for all SCSI disk devices

Create the sysfs file, dh_state even if the new SCSI device is not
in the any of the device handler's internal lists.

Signed-Off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] qlogicpti: add missing parentheses
Roel Kluin [Tue, 3 Nov 2009 23:38:44 +0000 (00:38 +0100)]
[SCSI] qlogicpti: add missing parentheses

`+' has a higher precedence than `?' so the condition always
evaluates to true and this is preprocessed to `7*((ql) - 1)'

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc fcoe: increase ELS and CT timeouts
Joe Eykholt [Tue, 3 Nov 2009 19:50:21 +0000 (11:50 -0800)]
[SCSI] libfc fcoe: increase ELS and CT timeouts

The FC-LS spec. says ELS timeouts should be 2 x R_A_TOV.
The FC-GS spec. says CT timeouts should be 3 x R_A_TOV.

We've been using E_D_TOV for both of those.

Change for all ELS and CT requests except FLOGI, which we
leave at 2 seconds (using E_D_TOV).  One could argue that
R_A_TOV is locally determined until after FLOGI succeeds.

This does change FLOGI for vports which becomes FDISC.
This does not change the REC/SRR timeout which is 2 seconds.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: Do not pad FIP keep-alive to full frame size
Yi Zou [Tue, 3 Nov 2009 19:50:16 +0000 (11:50 -0800)]
[SCSI] libfcoe: Do not pad FIP keep-alive to full frame size

According to the FC-BB-5 Rev2.0, 7.8.6.2, we should not pad FIP keep-alive
frames.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: fix an issue of pending exch/es after i/f destroyed or rmmod fcoe
Vasu Dev [Tue, 3 Nov 2009 19:50:10 +0000 (11:50 -0800)]
[SCSI] libfc: fix an issue of pending exch/es after i/f destroyed or rmmod fcoe

All exches must be freed before its EM mempool destroyed in this
case but currently some exches could be still pending in their
scheduled delayed work after EM mempool is destroyed causing
this issue discussed and reported in this latest email thread:-

 http://www.open-fcoe.org/pipermail/devel/2009-October/004788.html

This patch fixes this issue by adding dedicated work queue thread
fc_exch_workqueue for exch delayed work and then flush this work
queue before destroying EM mempool.

The cancel_delayed_work_sync cannot be called during final
fc_exch_reset due to lport and exch locking ordering, so removes
related comment block not relevant any more with this patch.

Reported-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc, fcoe: fixes for highmem skb linearize panics
Chris Leech [Tue, 3 Nov 2009 19:50:05 +0000 (11:50 -0800)]
[SCSI] libfc, fcoe: fixes for highmem skb linearize panics

There are cases outside of our control that may result in a transmit
skb being linearized in dev_queue_xmit.  There are a couple of bugs
in libfc/fcoe that can result in a panic at that point.  This patch
contains two fixes to prevent those panics.

1) use fast cloning instead of shared skbs with dev_queue_xmit

dev_queue_xmit doen't want shared skbuffs being passed in, and
__skb_linearize will BUG if the skb is shared.  FCoE is holding an extra
reference around the call to dev_queue_xmit, so that when it returns an
error code indicating the frame has been dropped it can maintain it's
own backlog and retransmit.  Switch to using fast skb cloning for this
instead.

2) don't append compound pages as > PAGE_SIZE skb fragments

fc_fcp_send_data will append pages from a scatterlist to the nr_frags[]
if the netdev supports it.  But, it's using > PAGE_SIZE compound pages
as a single skb_frag.  In the highmem linearize case that page will be
passed to kmap_atomic to get a mapping to copy out of, but
kmap_atomic will only allow access to the first PAGE_SIZE part.
The memcpy will keep going and cause a page fault once is crosses the
first boundary.

If fc_fcp_send_data uses linear buffers from the start, it calls
kmap_atomic one PAGE_SIZE at a time.  That same logic needs to be
applied when setting up skb_frags.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: Fix using VLAN ID in creating lport's WWWN/WWPN
Yi Zou [Tue, 3 Nov 2009 19:49:59 +0000 (11:49 -0800)]
[SCSI] fcoe: Fix using VLAN ID in creating lport's WWWN/WWPN

If the underlying netdev is a VLAN device, make sure the VLAN ID is integrated
into the WWNN/WWPN name generation. Also added/updated the comments to reflect
this change.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: do not use DID_NO_CONNECT for pkt alloc failures.
Mike Christie [Tue, 3 Nov 2009 19:49:54 +0000 (11:49 -0800)]
[SCSI] libfc: do not use DID_NO_CONNECT for pkt alloc failures.

DID_NO_CONNECT is not a nice value to use for pkt alloc failures,
because you can probably retry and IO will become available again.
For the device reset callout, we do not want to set the scsi command
result for the above reason, and because we do not need to set
the scsi_cmd->result in this path. We and other drivers do not set it
for success for example, and we do not set it for other failure.
And scsi-ml does not send every command through this path, and it is
not expecting us to use the scsi_cmnd struct like a cmd coming thruogh
queuecommand. I think it is more for storage in case we need a cmd
struct for a tmf and to give us certain params like the LUN.

Patch was made over scsi-misc today.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: Fix setting lport's WWNN/WWPN to use san mac address
Yi Zou [Tue, 3 Nov 2009 19:49:49 +0000 (11:49 -0800)]
[SCSI] fcoe: Fix setting lport's WWNN/WWPN to use san mac address

We are still using netdev->dev_addr to generate lport's WWNN/WWPN even if the
LLD has support for NETDEV_HW_ADDR_T_SAN. Instead, we should just use the
fip->ctl_src_addr, which is the NETDEV_HW_ADDR_T_SAN if LLD supports it or it
is just the netdev->dev_addr if it does not.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: Fix getting san mac for VLAN interface
Yi Zou [Tue, 3 Nov 2009 19:49:43 +0000 (11:49 -0800)]
[SCSI] fcoe: Fix getting san mac for VLAN interface

Make sure we are get the SAN MAC address from the real netdev if the input
netdev is a VLAN device.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: Fix checking san mac address
Yi Zou [Tue, 3 Nov 2009 19:49:38 +0000 (11:49 -0800)]
[SCSI] fcoe: Fix checking san mac address

This was fixed before in 7a7f0c7 but it's introduced again recently.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fnic: enable bsg pass-thru for fcping
Joe Eykholt [Tue, 3 Nov 2009 19:49:32 +0000 (11:49 -0800)]
[SCSI] fnic: enable bsg pass-thru for fcping

Add initialization of .bsg_request in the scsi_transport_fc
template so that fcping works.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: register FC4 features with the FC switch
Joe Eykholt [Tue, 3 Nov 2009 19:49:27 +0000 (11:49 -0800)]
[SCSI] libfc: register FC4 features with the FC switch

Customers and certification tests have pointed out that we don't
show up on the switch management software as an initiator.

On some MDS switches 'show fcns database' command shows libfc
initiators as 'fcp' not 'fcp:init' like other initiators.

On others switches, I think the switch gets the features by doing a PRLI,
but it may be only certain models or under certain configurations.

Fix this by registering our FC4 features with the RFF_ID CT request
after local port login and after the RFT_ID.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fnic: Add FIP support to the fnic driver
Joe Eykholt [Tue, 3 Nov 2009 19:49:22 +0000 (11:49 -0800)]
[SCSI] fnic: Add FIP support to the fnic driver

Use libfcoe as a common FIP implementation with fcoe.
FIP or non-FIP mode is fully automatic if the firmware
supports and enables it.

Even if FIP is not supported, this uses libfcoe for the non-FIP
handling of FLOGI and its response.

Use the new lport_set_port_id() notification to capture
successful FLOGI responses and port_id resets.

While transitioning between Ethernet and FC mode, all rx and
tx FC frames are queued.  In Ethernet mode, all frames are
passed to the exchange manager to capture FLOGI responses.

Change to set data_src_addr to the ctl_src_addr whenever it
would have previously been zero because we're not logged in.
This seems safer so we'll never send a frame with a 0 source MAC.
This also eliminates a special case for sending FLOGI frames.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: fcoe: simplify receive FLOGI response
Joe Eykholt [Tue, 3 Nov 2009 19:49:16 +0000 (11:49 -0800)]
[SCSI] libfcoe: fcoe: simplify receive FLOGI response

There was a locking problem where the fip->lock was held during
the call to update_mac().  The rtnl_lock() must be taken before
the fip->lock, not the other way around.  This fixes that.

Now that fcoe_ctlr_recv_flog() is called only from the response handler
to a FLOGI request, some checking can be eliminated.  Instead of calling
update_mac(), just fill in the granted_mac address for the passed-in
frame (skb).

Eliminate the passed-in source MAC address since it is also in the skb.

Also, in fcoe, call fcoe_set_src_mac() directly instead of going thru
the fip function pointer.  This will generate less code.
Then, since fip isn't needed for LOGO response, use lport as the arg.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: add host number to lport link up/down messages.
Joe Eykholt [Tue, 3 Nov 2009 19:49:11 +0000 (11:49 -0800)]
[SCSI] libfc: add host number to lport link up/down messages.

The libfc link up/down messages don't indicate which port is changing.
The Port ID will often be 0.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: add set_fid function to libfc template
Joe Eykholt [Tue, 3 Nov 2009 19:49:05 +0000 (11:49 -0800)]
[SCSI] libfc: add set_fid function to libfc template

This is to notify the LLD when an FC_ID is assigned to the local port.

The fnic driver needs to push the assigned FC_ID to firmware.
It currently does this by intercepting the FLOGI responses, and
in order to make that code more common with FIP and NPIV, it
makes more sense to wait until the local port has completely
handled the FLOGI or FDISC response.  Also, when we fix
point-to-point FC_ID assignment, we'll need this callback as well.

Add a call to the libfc template, which is called whenever
the local port FC_ID is being assigned.  It defaults to
fc_lport_set_fid(), supplied by libfc.

As additional benefit of this function, the LLD may determine
the MAC address that caused the change by looking at the received frame.

We also print the assigned port ID as long as it isn't 0.
Setting port ID to 0 happens often in reset while retrying FLOGI,
and would be uninteresting.  This replaces the previous message
which didn't identify the host adapter instance.

patch v2 note: changed one word in a comment.  "intercepted" -> "provided".

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: fix fc_els_resp_type to correct display of CT responses
Joe Eykholt [Tue, 3 Nov 2009 19:49:00 +0000 (11:49 -0800)]
[SCSI] libfc: fix fc_els_resp_type to correct display of CT responses

Local port debug messages were using fc_els_resp_type() which showed
all CT responses as rejects.

Handle CT responses correctly based by inspecting fh_type.

I decided not to rename the function to keep the patch smaller.
We could call it just fc_resp_type() or fc_elsct_resp_type().

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: fix symbolic name registrations smashing skb data
Joe Eykholt [Tue, 3 Nov 2009 19:48:55 +0000 (11:48 -0800)]
[SCSI] libfc: fix symbolic name registrations smashing skb data

The strncpy for RSPN_ID and RSNN_NN requests was padding
past the allocated frame size.

Get the string length before filling in the ct header.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: fix RNN_ID smashing skb payload
Joe Eykholt [Tue, 3 Nov 2009 19:48:50 +0000 (11:48 -0800)]
[SCSI] libfc: fix RNN_ID smashing skb payload

The code that filled in the name server RNN_ID (register node name)
request had somehow gotten a line in it from the RFT_ID code
which copies 32 bytes of data over the relatively short payload.
This caused some corruption and hangs.

Simply deleted the extraneous line.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: add check to fail gracefully in bonding mode
john fastabend [Tue, 3 Nov 2009 19:48:44 +0000 (11:48 -0800)]
[SCSI] fcoe: add check to fail gracefully in bonding mode

This patch adds a check to fail gracefully when the netdevice
is bonded.  Previously, the error was detected but the stack
would continue to load.  This resulted in a partially enabled
fcoe intance and errors when the fcoe instance was destroy.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: remove extra function decalrations
Yi Zou [Tue, 3 Nov 2009 19:48:39 +0000 (11:48 -0800)]
[SCSI] fcoe: remove extra function decalrations

Remove the two extra function decalartions in fcoe.c.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: don't send ELS in FIP mode if no FCF selected
Joe Eykholt [Tue, 3 Nov 2009 19:48:32 +0000 (11:48 -0800)]
[SCSI] libfcoe: don't send ELS in FIP mode if no FCF selected

If link is up, but no FCF is selected, don't send any ELS frames.

This came up when an fnic received a multicast advertisement but
no solitited advertisments, so no FCF was selected.  It tried
to send FLOGIs anyway.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: FIP should report link to libfc whether selected or not
Joe Eykholt [Tue, 3 Nov 2009 19:48:27 +0000 (11:48 -0800)]
[SCSI] libfcoe: FIP should report link to libfc whether selected or not

The fnic driver with FIP is reporting link up, even though it's down.

When the interface is shut down by the switch, we receive a clear
virtual link, and set the state reported to libfc as down, although
we still report it up.  Clearly wrong.  That causes the subsequent
link down event not to be reported, and /sys shows the host "Online".

Currently, in FIP mode, if an FCF times out, then link to libfc
is reported as down, to stop FLOGIs.  That interferes with the LLD
link down being reported.

Users really need to know the physical link information, to diagnose
cabling issues, so physical link status should be reported to libfc.

If the selected FCF needs to be reported, that should be done
separately, in a later patch.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: fip: allow FIP receive to be called from IRQ.
Joe Eykholt [Tue, 3 Nov 2009 19:48:22 +0000 (11:48 -0800)]
[SCSI] libfcoe: fip: allow FIP receive to be called from IRQ.

FIP's fcoe_ctlr_recv() function was previously only called from
the soft IRQ in FCoE.  It's not performance critical and is more
convenient for some drivers to call it from the IRQ level.  Just
Change to use skb_queue()/dequeue() which uses spinlock_irqsave
instead of separate locking with _bh locks.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: fip: use SCSI host number to identify debug messages.
Joe Eykholt [Tue, 3 Nov 2009 19:48:16 +0000 (11:48 -0800)]
[SCSI] libfcoe: fip: use SCSI host number to identify debug messages.

Use scsi host number to identify debug messages.
Previously, no instance information was given, so if multiple
ports were active, it became confusing.
Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: Allow FIP to be disabled by the driver
Joe Eykholt [Tue, 3 Nov 2009 19:48:11 +0000 (11:48 -0800)]
[SCSI] libfcoe: Allow FIP to be disabled by the driver

Allow FIP to be disabled by the driver for devices
that want to use libfcoe in non-FIP mode.

The driver merely sets the fcoe_ctlr mode to the state which
should be entered when the link comes up.  The default is auto.
No change is needed for fcoe.c which uses auto mode.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: adds can_queue ramp up
Vasu Dev [Tue, 3 Nov 2009 19:48:06 +0000 (11:48 -0800)]
[SCSI] libfc: adds can_queue ramp up

Adds last_can_queue_ramp_down_time and updates this on every
ramp down. If last_can_queue_ramp_down_time is not zero then
do ramp up on any IO completion in added fc_fcp_can_queue_ramp_up.

Reset last_can_queue_ramp_down_time to zero once can_queue
is ramped up to added max_can_queue limit, this is to avoid any
more ramp up attempts on subsequent IO completion.

The ramp down and up are skipped for FC_CAN_QUEUE_PERIOD
to avoid infrequent changes to can_queue, this required
keeping track of ramp up time also in last_can_queue_ramp_up_time.

Adds code to ramp down can_queue if lp->qfull is set, with added
new ramp up code the can_queue will be increased after
FC_CAN_QUEUE_PERIOD, therefore it is safe to do ramp down
without fsp in this case and will avoid thrash. This required
fc_fcp_can_queue_ramp_down locking change so that it can be
called with Scsi_Host lock held.

Removes si->throttled and fsp state FC_SRB_NOMEM, not needed with
added ramp up code.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: reduce can_queue for all FCP frame allocation failures
Vasu Dev [Tue, 3 Nov 2009 19:48:00 +0000 (11:48 -0800)]
[SCSI] libfc: reduce can_queue for all FCP frame allocation failures

Currently can_queue is reduced only if frame alloc fails
during fc_fcp_send_data but frame alloc can fail at several
other places in FCP data path and can_queue needs to be
reduced for any FCP frame alloc failure.

This patch adds fc_fcp_frame_alloc for all FCP frame allocations
and if fc_frame_alloc fails in fc_fcp_frame_alloc then reduce
can_queue in fc_fcp_frame_alloc, this will reduce can_queue for
all FCP frame alloc failures.

This required moving fc_fcp_reduce_can_queue up, to build without
adding its prototype. Also renamed fc_fcp_reduce_can_queue to
fc_fcp_can_queue_ramp_down.

Removes fc_fcp_reduce_can_queue calling from fc_fcp_recv since
not needed with added fc_fcp_frame_alloc reducing can_queue.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe, libfc: use single frame allocation API
Vasu Dev [Tue, 3 Nov 2009 19:47:55 +0000 (11:47 -0800)]
[SCSI] fcoe, libfc: use single frame allocation API

Cleans up frame allocation APIs to have just single fc_frame_alloc API.

Removes _fc_frame_alloc, renames __fc_frame_alloc to _fc_frame_alloc.

Modifies fc_fcp_send_data for removed _fc_frame_alloc, fc_fcp_send_data
was the only user of removed _fc_frame_alloc.

Also Adds check in fc_frame_alloc to do mod by 4 for only non-zero
len value.

This patch is prep work to fix can_queue reducing in next patch.
Single fc_frame_alloc API helps in fixing can_queue reducing in
next patch.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: Formatting cleanups and commenting
Robert Love [Tue, 3 Nov 2009 19:47:50 +0000 (11:47 -0800)]
[SCSI] fcoe: Formatting cleanups and commenting

Added kernel-doc comment blocks to all structures and functions.

Renamed fc_lport instances rom lp to lport to be inline with our
naming convention.

Renamed all misnamed net_device instances to netdev to be inline
with our naming convention.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfcoe: formatting and comment cleanups
Robert Love [Tue, 3 Nov 2009 19:47:45 +0000 (11:47 -0800)]
[SCSI] libfcoe: formatting and comment cleanups

Ensures that there are kernel-doc style comments for all
routines and structures.

There were also a few instances of fc_lport's named 'lp'
which were switched to 'lport' as per the libfc/libfcoe/fcoe
naming convention.

Also, emacs 'indent-region' and 'tabify' were ran on libfcoe.c.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Formatting cleanups across libfc
Robert Love [Tue, 3 Nov 2009 19:47:39 +0000 (11:47 -0800)]
[SCSI] libfc: Formatting cleanups across libfc

This patch makes a variety of cleanup changes to all libfc files.

This patch adds kernel-doc headers to all functions lacking them
and attempts to better format existing headers. It also add kernel-doc
headers to structures.

This patch ensures that the current naming conventions for local ports,
remote ports and remote port private data is upheld in the following
manner.

struct               instance (i.e. variable name)
--------------------------------------------------
fc_lport                      lport
fc_rport                      rport
fc_rport_libfc_priv           rpriv
fc_rport_priv                 rdata

I also renamed dns_rp and ptp_rp to dns_rdata and ptp_rdata
respectively.

I used emacs 'indent-region' and 'tabify' on all libfc files
to correct spacing alignments.

I feel sorry for anyone attempting to review this patch.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc, fcoe: Add FC passthrough support
Steve Ma [Tue, 3 Nov 2009 19:47:34 +0000 (11:47 -0800)]
[SCSI] libfc, fcoe: Add FC passthrough support

This is the Open-FCoE implementation of the FC
passthrough support via bsg interface.

Passthrough support is added to both N_Ports and
VN_Ports.

Signed-off-by: Steve Ma <steve.ma@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Add routine to copy data from a buffer to a SG list
Robert Love [Tue, 3 Nov 2009 19:47:28 +0000 (11:47 -0800)]
[SCSI] libfc: Add routine to copy data from a buffer to a SG list

When handling the multi-frame responses of fc pass-thru requests,
a code segment similar to fc_fcp_recv_data (routine to receive
inbound SCSI data) is used in the response handler. This patch
is to add a routine, called fc_copy_buffer_to_sglist(), to handle
the common function of copying data from a buffer to a scatter-
gather list in order to avoid code duplication.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Export FC headers
Robert Love [Tue, 3 Nov 2009 19:47:23 +0000 (11:47 -0800)]
[SCSI] libfc: Export FC headers

Export fc_els.h, fc_fs.h, fc_gs.h and fc_ns.h so that they
may be used by applications.

This will be needed for FC Passthrough applications like fcping,
but could be used by other applications.

Fix to include <linux/types.h> to exported files provided by
Chris Leech <christopher.leech@intel.com>.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] fcoe: vport symbolic name support
Chris Leech [Tue, 3 Nov 2009 19:47:18 +0000 (11:47 -0800)]
[SCSI] fcoe: vport symbolic name support

Allow a vport specific string to be appended to the port symbolic
name.  The new symbolic name is sent to the name server after it
is set.

This currently messes with libhbalinux, which is looking for
the fcoe "fcoe <ver> over <ethX>" string and expects whatever
comes after the "over" to be a network interface name only.

Adds an EXPORT_SYMBOL to libfc for fc_frame_alloc_fill, which is
needed to allow fcoe to allocate a frame of variable length for
the RSPN request.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: combine name server registration request functions
Chris Leech [Tue, 3 Nov 2009 19:47:12 +0000 (11:47 -0800)]
[SCSI] libfc: combine name server registration request functions

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: combine name server registration response handlers
Chris Leech [Tue, 3 Nov 2009 19:47:07 +0000 (11:47 -0800)]
[SCSI] libfc: combine name server registration response handlers

They all do the same thing, so combine them into a single function.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Register Symbolic Port Name (RSPN_ID)
Chris Leech [Tue, 3 Nov 2009 19:47:01 +0000 (11:47 -0800)]
[SCSI] libfc: Register Symbolic Port Name (RSPN_ID)

Register the fc_host symbolic name as the symbolic port name
with the fabric name server.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
15 years ago[SCSI] libfc: Register Symbolic Node Name (RSNN_NN)
Chris Leech [Tue, 3 Nov 2009 19:46:56 +0000 (11:46 -0800)]
[SCSI] libfc: Register Symbolic Node Name (RSNN_NN)

Register the fc_host symbolic name as the symbolic node name
with the fabric name server.

Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>