Commit Graph

8730 Commits

Author SHA1 Message Date
Stephen M. Cameron 1d94f94d89 [SCSI] hpsa: factor out tail calls to next_command() in process_(non)indexed_cmd()
This is in order to smooth the way for upcoming changes to allow use of
multiple reply queues for command completions.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Matt Gates <matthew.gates@hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:15:46 +01:00
Stephen M. Cameron 6cba3f1972 [SCSI] hpsa: do aborts two ways
When aborting a command, the tag is supposed to be
specified as 64-bit little endian.  However, some smart
arrays expect the tag of the command to be aborted to be
specified in a strange byte order.  How to tell which sort
of Smart Array firmware we're dealing with is not obvious.
However, because of the way we construct our tags, the values
of any outstanding tag when specified with the "strange" byte
order will not collide with the value specified in the correct
order.  That means we can safely attempt the abort both ways.

Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:15:16 +01:00
Stephen M. Cameron 75167d2cc7 [SCSI] hpsa: add abort error handler function
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:14:29 +01:00
Stephen M. Cameron 5a3d16f51e [SCSI] hpsa: remove unused parameter from finish_cmd
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:13:55 +01:00
Stephen M. Cameron 9c2fc1605f [SCSI] hpsa: do not give up retry of driver cmds after only 3 retries
Instead of giving up after 3 immediate retries of driver initiated
commands, back off the rate of retries and retry a bunch more times.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reviewed-by: Andi Shyti <andi.shyti@gmail.com> 
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:13:25 +01:00
Matt Bondurant 852af20aa6 [SCSI] hpsa: retry driver initiated commands on busy status
In shared SAS configurations we might get a busy status
during driver initiated commands (e.g. during rescan for
devices).  We should retry the command in such cases rather
than giving up.

Signed-off-by: Matt Bondurant <Matthew.dav.bondurant@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:12:10 +01:00
Stephen M. Cameron 2c17d2da8c [SCSI] hpsa: do not read from controller unnecessarily in completion code
MSI/MSI-X interrupts can't race the DMA completion they are communicating
so no need to read from controller to flush the DMA to the host if
MSI or MSI-X interrupts are being used.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:11:43 +01:00
Stephen M. Cameron 21b8e4ef03 [SCSI] hpsa: suppress excessively chatty error messages
Default behavior for any CHECK CONDITION excepting a few special cases is to
print out certain parts of the sense buffer and the CDB.  Default behavior
should be to print nothing and let the upper layers or applications decide what
to do about these.  The same information is already available by setting the
appropriate bits of the scsi_logging_level kernel parameter or via
/proc/sys/dev/scsi/logging_level.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:10:23 +01:00
Stephen M. Cameron 5cb460a640 [SCSI] hpsa: enable bus master bit after pci_enable_device
pci_disable_device() disables the bus master bit and pci_enable_device does
not re-enable it.  It needs to be enabled.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:10:00 +01:00
Stephen M. Cameron e754b42424 [SCSI] hpsa: do not skip disabled devices
There was code to skip "disabled" devices which was intended to
skip devices disabled in the BIOS, but it really just checks to
see if the device can write to host memory, which this is disabled
by pci_disable_device on driver unload, so this check has the effect
of preventing subsequent load of the driver.  And devices disabled in
the BIOS don't show up at all anyway, so this check never made any
sense to begin with, and should be removed.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:09:20 +01:00
Stephen M. Cameron f0bd0b6822 [SCSI] hpsa: call pci_disable_device on driver unload
As Jenx Axboe explained to me: "In earlier times (2.6.18 and pre, iirc), Linux
disabled IO and mem bars on pci_disable_device(). Now in newer kernel it does
not. And in the newer kernels you run into problems if you DON'T disable the
device on exit, since when it later loads the device is already in the enabled
state - and pci_enable_device() then does nothing. This typically screws
MSI/MSI-X." This is what the big scary comment that says pci_disable_device
does "something nasty" to smart arrays was evidently referring to.

If pci_disable_device is not called on driver rmmod, subsequently insmod'ing
the driver may in result in some cases fail to be able to receive interrupts,
esp.  if other drivers are loaded between unloading and loading hpsa.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:07:56 +01:00
Mike Maslenkin 89a342ca6b [SCSI] scsi_transport_spi: fix for unbalanced reference counting
Check the domain validation flag on the given device before referencing
scsi_device instance, otherwise if the flag is already set we return without
decrementing the reference count.

Signed-off-by: Mike Maslenkin <mihailm@parallels.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:06:12 +01:00
Eddie Wai 9ebd99c599 [SCSI] bnx2i: Updated version and copyright year
Old version: 2.7.0.3
New version: 2.7.2.2

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:04:18 +01:00
Eddie Wai 6f9c04ff77 [SCSI] bnx2i: Added the setting of target can_queue via target_alloc
This will set the target can_queue limit to the number of preallocated
session tasks set during creation.

"Could not send nopout" messages were observed without this when the
iSCSI connection experiences dropped frames under heavy I/O stress.

Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:03:18 +01:00
Mark Salyzyn 99c72ebceb [SCSI] pm8001: raise host can queue
This is a followup to a patch provided by Jack Wang on September 21 2011.

After increasing the CAN_QUEUE to 510 in pm8001 we discovered some performance
degredation from time to time. We needed to increase the MPI queue to
compensate and ensure we never hit that limit. We also needed to double
the margin to support event and administrivial commands that take from
the pool resulting in an occasional largely unproductive command completion
with soft error to the caller when the command pool is overloaded temporarily.

Signed-off-by: Mark Salyzyn <mark_salyzyn@xyratex.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 09:02:07 +01:00
Santosh Yaraganavi 85bb4457ef [SCSI] ufs: Assign UTRLBAU = upper_32_ bits(UTRLD base address)
UTP Transfer request list base registers UTRLBA and UTRLBAU
must be assigned, lower-32 and upper-32 bits of UTRLD list
physical base addresses respectively.

Currently UTRLBAU is being assigned lower-32 bits of UTRLD
physical base address. This will cause an issue with
controllers that can support 64-bit addressing.

This patch correctly assigns upper-32 bits of UTRLD physical
base address to UTRLBAU.

Reported-by: Rene De Jong <rene.dejong@arm.com>
Signed-off-by: Santosh Yaraganavi <santoshsy@gmail.com>
Reviewed-by: Vinayak Holikatti <vinholikatti@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:26 +01:00
Dan Carpenter b3b8abd857 [SCSI] fcoe: remove a stray unlock
We moved the locking in dd060e74fb "[SCSI] fcoe: remove frame dropping
code from fcoe_percpu_clean" but this unlock was missed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:26 +01:00
Yi Zou d227f029c2 [SCSI] libfcoe: fix VN2VN N_Port_ID Beacon source MAC
FC-BB-6 v1.04 7.9.8.14 N_Port_ID Beacon:

"A N_Port_ID Beacon is multicast and uses the VN_Port MAC address as source
address."

Currently, libfcoe is using ENode MAC, this seems ok and functionality wise
not a problem in my back to back testing setup, however, just fix this to
make libfcoe VN2VN support more spec compliant.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:26 +01:00
Robert Love 949e71f17d [SCSI] fcoe: Don't hold rtnl_mutex in fcoe_update_src_mac
The rtnl_mutex was held to protect calls to dev_uc_add
and dev_uc_del. Holding rtnl is not required as those
functions make use of the netif_addr_lock* API to
protect the MAC changing.

This change fixes the following regression by removing
the rtnl usage when fcoe_update_src_mac is called.

https://bugzilla.kernel.org/show_bug.cgi?id=42918

the existing dependency chain (in reverse order) is:

-> #1 (&fip->ctlr_mutex){+.+...}:
       [<c1091f70>] lock_acquire+0x80/0x1b0
       [<c147655d>] mutex_lock_nested+0x6d/0x340
       [<f8970c32>] fcoe_ctlr_link_up+0x22/0x180 [libfcoe]
       [<f894620e>] fcoe_create+0x47e/0x6e0 [fcoe]
       [<f8973dd3>] fcoe_transport_create+0x143/0x250 [libfcoe]
       [<c10527e0>] param_attr_store+0x30/0x60
       [<c1052696>] module_attr_store+0x26/0x40
       [<c11a201e>] sysfs_write_file+0xae/0x100
       [<c11449df>] vfs_write+0x8f/0x160
       [<c1144cbd>] sys_write+0x3d/0x70
       [<c147a0c4>] syscall_call+0x7/0xb

-> #0 (rtnl_mutex){+.+.+.}:
       [<c109164b>] __lock_acquire+0x140b/0x1720
       [<c1091f70>] lock_acquire+0x80/0x1b0
       [<c147655d>] mutex_lock_nested+0x6d/0x340
       [<c13a10c4>] rtnl_lock+0x14/0x20
       [<f89445ac>] fcoe_update_src_mac+0x2c/0xb0 [fcoe]
       [<f8971712>] fcoe_ctlr_timer_work+0x712/0xb60 [libfcoe]
       [<c104fb69>] process_one_work+0x179/0x5d0
       [<c10502f1>] worker_thread+0x121/0x2d0
       [<c10550ed>] kthread+0x7d/0x90
       [<c1481a82>] kernel_thread_helper+0x6/0x10

other info that might help us debug this:

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&fip->ctlr_mutex);
                               lock(rtnl_mutex);
                               lock(&fip->ctlr_mutex);
  lock(rtnl_mutex);

 *** DEADLOCK ***

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:25 +01:00
Vasu Dev 3cab4468fd [SCSI] libfc: defer releasing master lport until complete fcoe interface cleanuped up
The fcoe controller has back references, therefore defer
releasing master lport which gets freed along scsi_host_put
and then free it once fcoe interface is fully cleaned.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:25 +01:00
Vasu Dev 061446a159 [SCSI] libfc: flush lport worker after its disabled
The lport could get timeout armed while its getting disabled,
so flush lport worker after its disabled and ignore lport
retry in that case instead of WARN_ON.

 [13192.936858] WARNING: at drivers/scsi/libfc/fc_lport.c:1573 fc_lport_timeout+0x53/0xa9 [libfc]()
 [13192.938026] Hardware name: Bochs
 [13192.938620] Modules linked in: fcoe libfcoe libfc scsi_transport_fc scsi_tgt fuse 8021q garp stp llc sunrpc ipv6 uinput microcode joydev pcspkr ixgbe e1000 i2c_piix4 i2c_core virtio_balloon dca mdio virtio_blk virtio_pci virtio_ring virtio floppy [last unloaded: speedstep_lib]
 [13192.942589] Pid: 23605, comm: kworker/0:6 Tainted: G        W    3.2.0+ #71
 [13192.943587] Call Trace:
 [13192.944052]  [<ffffffff810403f4>] warn_slowpath_common+0x85/0x9d
 [13192.944940]  [<ffffffff81040426>] warn_slowpath_null+0x1a/0x1c
 [13192.945734]  [<ffffffffa02746eb>] fc_lport_timeout+0x53/0xa9 [libfc]
 [13192.946665]  [<ffffffff81058d88>] process_one_work+0x20c/0x3ad
 [13192.947541]  [<ffffffff81058cbe>] ? process_one_work+0x142/0x3ad
 [13192.948423]  [<ffffffffa0274698>] ? fc_lport_enter_ns+0x178/0x178 [libfc]
 [13192.949363]  [<ffffffff8105a313>] worker_thread+0xfd/0x181
 [13192.950191]  [<ffffffff8105a216>] ? manage_workers.clone.15+0x173/0x173
 [13192.951100]  [<ffffffff8105e19b>] kthread+0xa4/0xac
 [13192.951755]  [<ffffffff814edbb4>] kernel_thread_helper+0x4/0x10
 [13192.952520]  [<ffffffff814e5cb4>] ? retint_restore_args+0x13/0x13
 [13192.953398]  [<ffffffff8105e0f7>] ? __init_kthread_worker+0x5b/0x5b
 [13192.954278]  [<ffffffff814edbb0>] ? gs_change+0x13/0x13
 [13192.954911] ---[ end trace 9763213b95bbd803 ]---

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:25 +01:00
Vasu Dev 433eba04c2 [SCSI] fcoe: remove lport from net device before doing per cpu rx thread cleanup
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 <vasu.dev@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:24 +01:00
Venkatraman S fd0f8370c8 [SCSI] ufs: Fix evaluation of UTP task completion code
While interpreting the result of UTP task completion status,
by using boolean &&, the evaluation would fail when the
UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED was received.

Either UPIU_TASK_MANAGEMENT_FUNC_COMPL or
UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED should be
considered as a success result.

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Santosh Y <santoshsy@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:24 +01:00
Tomas Henzl f555e05265 [SCSI] mpt2sas: move the scsi_host_put to the right place
When scsi_add_host fails the scsi_host_put should be called.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: "Nandigama, Nagalakshmi" <Nagalakshmi.Nandigama@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:23 +01:00
Mike Christie 8fb2ef89b6 [SCSI] fc class: fix scanning when devs are offline
When a rport is added back or the role is changed the fc class
will queue a scan and then call scsi_target_unblock. The problem
with this is if the devices are in the SDEV_OFFLINE state and
the scan is run before the scsi_target_unblock, then the scan
will see LUN0 as offline and the scan will fail. This patch moves
the unblock call to before the scan, so we know the device state
will be set correctly when the scan is run.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:59:23 +01:00
David Jeffery 7c018a901c [SCSI] st: fix memory leak with >1MB tape I/O
There is a memory leak in the st driver when sending large enough reads or
writes using st's direct I/O path.  As part of mapping the application's
memory, a buffer to hold page pointers is allocated and the count of mapped
pages is stored in field do_dio.  A non-zero do_dio marks that direct I/O is
in use.

But do_dio is only 1 byte in size.  Mapping 256 4k pages overflows
do_dio and causes it to be set to 0, like direct I/O option was not
used.  When the I/O completes, the buffer to hold the page pointers is
not freed, and the page counts of the mapped pages are not reduced.
Every I/O of this size then leaks memory.

The size of do_dio needs to be increased to prevent it wrapping around.

Signed-off-by: David Jeffery <djeffery@redhat.com>
Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-05-10 08:32:34 +01:00
Krishna Gudipati a3f29cccbe [SCSI] bfa: Fix bfa logging for Logical port state change notification
Made changes to have the same logging level for Logical port
online and offline events, to display these events in pairs.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 10:02:03 +01:00
Krishna Gudipati 9d8ad782b9 [SCSI] bfa: sysfs model description fix.
Make changes to remove unsupported model numbers from the sysfs
model description routine.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:59:59 +01:00
Krishna Gudipati 17c201b328 [SCSI] bfa: Fix to defer vport delete handler invocation till firmware logo response.
Made changes to avoid queuing the vport delete work to IM driver
work queue in the bfa_fcb_lport_delete() - since at this stage we
are not completely done with using the vport structure as we are
still waiting for the LOGO response from the fw in online state or
just doing some cleanup. Since queuing up the vport delete work at
this stage will result in the FC transport layer to clean up the vport
before we get the response from firmware.
Made changes to queue the port delete work to the IM driver work queue -
from the bfa_fcs_vport_free() function since at this state we are done
with using the vport data structure and the FCS state machine is completely
cleaned up.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:58:31 +01:00
K. Y. Srinivasan 42e22cac4e [SCSI] storvsc: Properly handle errors from the host
Hyper-V cannot process some commands like ATA_12 and ATA_16. It also returns a
very generic error when this happens (SRB_STATUS_ERROR).  Most of the time we
treat SRB_STATUS_ERROR as DID_TARGET_FAILURE which causes error handler retry,
but in the case of pass through commands, they'll never succeed (and the error
handler will offline the device), so put a discriminating block in the command
completion routing and send the SRB_STATUS_ERROR upwards with DID_PASSTHROUGH
for commands we know should not be retried.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:51:43 +01:00
John Soni Jose c62eef0d1b [SCSI] be2iscsi: Get Port State and Speed of the Adapter
Implement ISCSI_HOST_PARAM_PORT_STATE and ISCSI_HOST_PARAM_PORT_SPEED
to get the Adapter port state and port name

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:36:47 +01:00
Mike Christie 0e43895ec1 [SCSI] be2iscsi: adding functionality to change network settings using iscsiadm
This patch allows iscsiadm to set/ delete static IP and enable /disable
DHCP.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:35:31 +01:00
Jayamohan Kallickal ffce3e2e8c [SCSI] be2iscsi: Adding bsg interface for be2iscsi
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:33:15 +01:00
John Soni Jose 2177199d51 [SCSI] be2iscsi: Get Initiator Name for the iSCSI_Host
Implement the ISCSI_HOST_PARAM_INITIATOR_NAME for .get_host_param

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:29:35 +01:00
Jayamohan Kallickal 605c6cd201 [SCSI] be2iscsi: Return async handle of unknown opcode to free list.
The async handle corresponding to unknown Opcode was not freed
earlier. This code does the fix for that.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:27:40 +01:00
Jayamohan Kallickal 9728d8d035 [SCSI] be2iscsi: Check ASYNC PDU Handle corresponds to HDR/DATA Handle
For each ASYNC PDU received there is an HDR and DATA handle for it.
There will be only 1 HDR ASYNC Handle, but DATA Handle can be more
than 1 for each ASYNC PDU received. Checking if the ASYNC Handle
correspongs to HDR or DATA while returning the Handle to the free list.
hwi_free_async_msg just return the handles to the free list. No return
values are needed so changing the return type to void.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:26:24 +01:00
Jayamohan Kallickal 76d15dbd5d [SCSI] be2iscsi: Bump the driver Version
Signed-off-by: Minh Tran <MinhDuc.Tran@Emulex.Com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:24:56 +01:00
Jayamohan Kallickal 2f63588386 [SCSI] be2iscsi: Update external Branding to Emulex
Change MODULE_AUTHOR, driver name and other external print strings from
Serverengines to Emulex.

Signed-off-by: Minh Tran <MinhDuc.Tran@Emulex.Com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:23:08 +01:00
Jayamohan Kallickal a49e06d58d [SCSI] be2iscsi: Fix the function return values.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:18:52 +01:00
Jayamohan Kallickal db7f770968 [SCSI] be2iscsi: Code cleanup, removing the goto statement
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:14:18 +01:00
Jayamohan Kallickal c8b25598dc [SCSI] be2iscsi: Fix double free of MCCQ info memory.
In case of MCC_Q creation failed, the MCCQ info memory is freed
from be_mcc_queues_destroy and be_mcc_queues_create. This caused
kernel to panic because of double free.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:09:22 +01:00
Jayamohan Kallickal b547f2d699 [SCSI] be2iscsi: Set num_cpu = 1 if pci_enable_msix fails
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:08:14 +01:00
Jayamohan Kallickal b5b9323b95 [SCSI] be2iscsi: Fix typo function name mismatch
Signed-off-by: Minh Tran <MinhDuc.Tran@Emulex.Com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:05:08 +01:00
Mike Christie 1282ab76d9 [SCSI] be2iscsi: Freeing of WRB and SGL Handle in cleanup task
The WRB and SGL Handle allocated for Login task were not freed
back to the pool after the login process was done. This code
releases the WRB and SGL Handle after the login process.

v2:
- Fix up locking so bh calls are not done when not needed.
- Make beiscsi_cleanup_task static.

Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
[various fixes]
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:01:40 +01:00
Jayamohan Kallickal 3ec7827134 [SCSI] be2iscsi: WRB Initialization and Failure code path change
Removing code duplication during the WRB_Handle and WRB
initialization.
Added memory allocation failure handling code during WRB
initialization.

Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 09:00:38 +01:00
Jayamohan Kallickal f2ba02b89a [SCSI] be2iscsi: Fix in ASYNC PDU stitching logic.
The buffer length passed for processing the ASYNC PDU
was not proper.

Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 08:57:02 +01:00
Jayamohan Kallickal dc63aac62d [SCSI] be2iscsi: Fix in the Asynchronous Code Path
Set the ASYNC PDU Handle pBuffer for Data ring with the VA/PA
of the allocated memory for it.
To get the correct ASYNC PDY Handle iterate the list and compare
the PA set during initialization with the passed PHY Address.
The buffer_size and num_enteries are common for HDR and Data ring

Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-25 08:52:50 +01:00
Akinobu Mita 0fc9fd4016 [SCSI] hpsa: use check_signature
Use check_signature to find a signature in the mmio address.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Mike Miller <mike.miller@hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 23:16:56 +01:00
Tomas Henzl 7155250574 [SCSI] aacraid: add an iounmap call to aac_src_ioremap
The patch 116046127d "[SCSI] aacraid: Added
Sync.mode to support series 7/8/9 controllers" removed an iounmap call from
aac_src_ioremap. Before that, the iounmap has been called twice with the same
value (dev->base and dev->regs.src.bar0) and the iounmap complained about it
(iounmap: bad address ...).

The proper solution is a change the paremeter from bar0 to bar1.
Fix this by adding a an iounmap(dev->regs.src.bar1) call.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Achim Leubner <achim_leubner@pmc-sierra.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:28:24 +01:00
Moger, Babu 72d9e0f383 [SCSI] scsi_dh_alua: Optimize the STPG command
This patch optimizes the set target port group(STPG) command. During our
testing, we found that it is not optimal to send stpg command every time
the path group switch happens. This patch uses PREF (preferred target port)
bit with combination of flags passed by multipath user level tool to
optimize this behaviour. If PREF bit is set then it issues a STPG command,
otherwise it will let implicit transfer take place.

By default there is no change in the behaviour. User tool needs to pass the
parameter to make this change take effect. Patch has been tested on NetApp
E series storage.

Signed-off-by: Babu Moger <babu.moger@netapp.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2012-04-23 19:28:18 +01:00