Commit Graph

574947 Commits

Author SHA1 Message Date
Sumit Saxena
52b62ac7c6 megaraid_sas: IO throttling support
This patch will add capability in driver to tell firmware that it can
throttle IOs in case controller's queue depth is downgraded post OFU
(online firmware upgrade). This feature will ensure firmware can be
downgraded from higher queue depth to lower queue depth without needing
system reboot. Added throttling code in IO path of driver, in case OS
tries to send more IOs than post OFU firmware's queue depth.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
308ec459bc megaraid_sas: Dual queue depth support
1. For iMR controllers, firmware will report two queue depths:

   - Controller-wide queue depth
   - LDIO queue depth (240)

Controller-wide queue depth will be greater among the two. Using this
new feature, iMR can provide larger Queue depth(QD) for JBOD and limited
QD for Virtual Disk(VD).

2. megaraid_sas driver will throttle read/write LDIOs based on "LDIO
Queue Depth".

3. Dual queue depth can be enabled/disabled via module parameter. It is
enabled by default if the firmware supports it. Only specific firmware
builds will enable the feature.

4. Added sysfs parameter "ldio_outstanding" which permits querying the
number of outstanding LDIO requests at runtime.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
f9a9dee6a1 megaraid_sas: Code optimization build_and_issue_cmd return-type
build_and_issue_cmd should return SCSI_MLQUEUE_HOST_BUSY for a few error
cases instead of returning 1.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
179ac14291 megaraid_sas: Reply Descriptor Post Queue (RDPQ) support
This patch will create a reply queue pool for each MSI-X index and will
provide an array of base addresses instead of the single address of
legacy mode. Using this new interface the driver can support higher
queue depths through scattered DMA pools.

If array mode is not supported driver will fall back to the legacy
method of reply pool allocation. This limits controller queue depth to
1K max. To enable a queue depth of more than 1K driver requires firmware
to support array mode and scratch_pad3 will provide the new queue depth
value.

When RDPQ is used, downgrading to an older firmware release should not
be permitted. This may cause firmware fault and is not supported.

Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
8f05024cd3 megaraid_sas: Fastpath region lock bypass
Firmware will fill out per-LD data to tell driver whether a particular
LD supports region lock bypass. If yes, then driver will send non-FP
LDIO to region lock bypass FIFO. With this change in driver, firmware
will optimize certain code to improve performance.

Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
2216c30523 megaraid_sas: Update device queue depth based on interface type
This patch will update device Queue depth based on interface type(SAS,
SATA..) for sysPDs.  For Virtual disks(VDs), there will be no change in
queue depth (will remain 256).  To fetch interface type (SAS or SATA or
FC..) of syspD, driver will send DCMD MR_DCMD_PD_GET_INFO.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
18365b1385 megaraid_sas: Task management support
This patch adds task management for SCSI commands. Added functions are
task abort and target reset.

1. Currently, megaraid_sas driver performs controller reset when any IO
times out.  With task management support added, task abort and target
reset will be tried to recover timed out IO. If task management fails,
then controller reset will be performaned. If the task management
request times out, fail the request and escalate to the next
level (controller reset).

2. mr_device_priv_data will be allocated for all generations of
controller, but is_tm_capable flag will never be set for
controllers (prior to Invader series) as firmware support is not
available for task management.

3. Task management capable firmware will set is_tm_capable flag in
firmware API.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
2c048351c8 megaraid_sas: Syncing request flags macro names with firmware
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
6d40afbc7d megaraid_sas: MFI IO timeout handling
This patch will do proper error handling for DCMD timeout failure cases
for Fusion adapters:

1. For MFI adapters, in case of DCMD timeout (DCMD which must return
SUCCESS) driver will call kill adapter.

2. What action needs to be taken in case of DCMD timeout is decided by
function dcmd_timeout_ocr_possible().  DCMD timeout causing OCR is
applicable to the following commands:

	MR_DCMD_PD_LIST_QUERY
	MR_DCMD_LD_GET_LIST
	MR_DCMD_LD_LIST_QUERY
	MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS
	MR_DCMD_SYSTEM_PD_MAP_GET_INFO
	MR_DCMD_LD_MAP_GET_INFO

3. If DCMD fails from driver init path there are certain DCMDs which
must return SUCCESS. If those DCMDs fail, driver bails out. For optional
DCMDs like pd_info etc., driver continues without executing certain
functionality.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sumit Saxena
11c71cb4ab megaraid_sas: Do not allow PCI access during OCR
This patch will do synhronization between OCR function and AEN function
using "reset_mutex" lock.  reset_mutex will be acquired only in the
first half of the AEN function which issues a DCMD. Second half of the
function which calls SCSI API (scsi_add_device/scsi_remove_device)
should be out of reset_mutex to avoid deadlock between scsi_eh thread
and driver.

During chip reset (inside OCR function), there should not be any PCI
access and AEN function (which is called in delayed context) may be
firing DCMDs (doing PCI writes) when chip reset is happening in parallel
which will cause FW fault. This patch will solve the problem by making
AEN thread and OCR thread mutually exclusive.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Don Brace
3846470a1b scsi: Export function scsi_scan.c:sanitize_inquiry_string
The hpsa driver uses this function to cleanup inquiry data. Our new pqi
driver will also use this function. This function was copied into both
drivers.

This patch exports sanitize_inquiry_string so the hpsa and the pqi
drivers can use this function directly.

Suggested-by: Hannes Reinecke <hare@suse.de>
Suggested-by: Matthew R. Ochs mrochs@linux.vnet.ibm.com
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com>
Reviewed-by: Justin Lindley <justin.lindley@pmcs.com>
Reviewed-by: Scott Teel <scott.teel@pmcs.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Don Brace <don.brace@pmcs.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Himanshu Madhani
dde3283346 qla2xxx: Update driver version to 8.07.00.33-k
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Chad Dupuis
080c9517ea qla2xxx: Set relogin flag when we fail to queue login requests.
If we fail to queue an srb for an async login we should set the
relogin flag so it will be retried as the reason for the queuing
failure was most likely transient.  Failure to do this can lead to
failed paths as login is never retried if the relogin flag is not
set.

Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Himanshu Madhani
8ce3f57051 qla2xxx: Enable T10-DIF for ISP27XX
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Harish Zunjarrao
c73191b83b qla2xxx: Provide mbx info in BBCR data after mbx failure
Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Joe Carnuccio
da08ef5c30 qla2xxx: Avoid side effects when using endianizer macros.
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Harish Zunjarrao
243de6768d qla2xxx: Add support for Private link statistics counters.
Signed-off-by: Harish Zunjarrao <harish.zunjarrao@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sawan Chandak
969a619966 qla2xxx: Add support for buffer to buffer credit value for ISP27XX.
Signed-off-by: Sawan Chandak <sawan.chandak@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Sawan Chandak
4243c115f4 qla2xxx: Add support for online flash update for ISP27XX.
Signed-off-by: Sawan Chandak <sawan.chandak@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Himanshu Madhani
f198cafaa4 qla2xxx: Allow fw to hold status before sending ABTS response.
Set bit 12 of additional firmware options 3 to let firmware
hold status IOCB until ABTS response is received from Target.

Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Joe Carnuccio
9f8d3d5bc5 qla2xxx: Seed init-cb login timeout from nvram exclusively.
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Chad Dupuis
0a583e4531 qla2xxx: Remove unneeded link offline message.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Alexey Khoroshilov
e0493627c3 be2iscsi: add checks for dma mapping errors
hwi_write_buffer() does not check if mapping dma memory succeed. The
patch adds the check and failure handling.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Acked-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
1db1194f1f be2iscsi: Update the driver version
Driver version: 11.0.0.0

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
cb564c6b44 be2iscsi: Fix WRB leak in login/logout path
Login/Logout loop was hanging after few hours. /var/log/message showed
that alloc_wrb_handle() function was not able to allocate any new WRB.

Sep 11 11:25:22 Jhelum10 kernel: connection32513:0: Could not send nopout
Sep 11 11:25:22 Jhelum10 kernel: scsi host10: BM_4989 : Alloc of WRB_HANDLE
Failed for the CID : 384
Sep 11 11:25:22 Jhelum10 kernel: connection32513:0: Could not allocate pdu for
mgmt task.

Driver allocates WRB to pass login negotiated parameters information to FW
in beiscsi_offload_connection(). This allocated WRB was not freed so there
was WRB_Leak happening.

Put WRB used for posting the login-negotiated parameters back in pool.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
9c4f8b0173 be2iscsi: Fix async link event processing
Use only port_link_status only to determine link state change.  Only bit
0 is used to get the state.  Remove code for processing port_fault.

Fixed get_nic_conf structure definition. Removed rsvd[23] field in
be_cmd_get_nic_conf_resp.

Moved definitions of struct field values below the field.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
048084c268 be2iscsi: Fix to process 25G link speed info from FW
Async link event provides port_speed info. Cache the port_speed info
and use the same to report in ISCSI_HOST_PARAM_PORT_SPEED query.

Removed link status query IOCTL used to do the same.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
f9e4fa4619 scsi_transport_iscsi: Add 25G and 40G speed definition
iscsi_port_speed and iscsi_port_speed_names have new entries for
25Gbps and 40Gbps link speeds.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
1094cf68e8 be2iscsi: Fix IOPOLL implementation
OS not responding when running 2 port traffic on 72 CPUs system.

be2iscsi IRQs gets affined to CPU0 when irqbalancer is disabled.
be_iopoll processing completions in BLOCK_IOPOLL_SOFTIRQ hogged CPU0.

1. Use budget to exit the polling loop. beiscsi_process_cq didn't honour
   it.
2. Rearming of EQ is done only after iopoll completes.

[mkp: Fixed up blk_iopoll -> irq_poll transition]

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
23d7ccf134 be2iscsi: Fix return value for MCC completion
Change return value of completed MCC EBUSY to EINVAL.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
4570f1618e be2iscsi: Add FW config validation
System crash in I+T card personality.

Fix to add validation for ULP in initiator mode, physical port number,
and supported queue, icd, cid counts.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
53aefe2552 be2iscsi: Fix to handle misconfigured optics events
Log messages for misconfigured transceivers reported by FW.

Register async events that driver handles using MCC_CREATE_EXT ioctl.
Errors messages for faulted/uncertified/unqualified optics are logged.
Added IOCTL to get port_name to be displayed in error message.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
c9beb6fa14 be2iscsi: Fix VLAN support for IPv6 network
Configuring VLAN parameters through IPv6 interface was not supported in
driver.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
cdaa4ded06 be2iscsi: Fix to remove shutdown entry point
Null pointer dereference in shutdown path after taking dump.

Shutdown path is not needed as FW comes up clean every time during probe
after issuing FUNCTION reset MBOX command.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
3c9d903b17 be2iscsi: Added return value check for mgmt_get_all_if_id
Use of mutex_lock_interruptible can return -EINTR, handle and log the
error.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
9ec6f6b89a be2iscsi: Set mbox timeout to 30s
FW recommended timeout for all mbox command is 30s.  Use msleep instead
mdelay to relinquish CPU when polling for mbox completion.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
12843f0361 be2iscsi: Fix to synchronize tag allocation using spin_lock
alloc_mcc_tag needs to be done under mcc_lock.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
cdde6682ab be2iscsi: Fix to use atomic bit operations for tag_state
beiscsi_mccq_compl sets MCC_TAG_STATE_TIMEOUT before setting up
tag_mem_state. be_mcc_compl_process_isr checks for MCC_TAG_STATE_TIMEOUT
first then accesses tag_mem_state which might be still getting populated
in the process context.

Fix: Set MCC_TAG_STATE_TIMEOUT after tag_mem_state is populated.
Removed MCC_TAG_STATE_COMPLETED. When posted its in running state and
the running state is cleared in be_mcc_compl_process_isr.  be_mcc_notify
now takes tag argument to set it to running state.  Use bit operations
for tag_state. Use barriers before setting the state.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
c03a50f709 be2iscsi: Fix mbox synchronization replacing spinlock with mutex
This is second part of actual fix for soft lockup.

All mbox cmds issued using BMBX and MCC are synchronized using mutex
mbox_lock instead of spin_lock. Used mutex_lock_interruptible where ever
possible.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Jitendra Bhivare
6ac999efee be2iscsi: Fix soft lockup in mgmt_get_all_if_id path using bmbx
We are taking mbox_lock spinlock which disables pre-emption before we
poll for mbox completion. Waiting there with spinlock held in excess of
20s will cause soft lockup.

Actual fix is to change mbox_lock to mutex. The changes are done in
phases. This is the first part.

1. Changed mgmt_get_all_if_id to use MCC where after posting lock is
released.

2. Changed be_mbox_db_ready_wait to busy wait for 12s max and removed
wait_event_timeout. Added error handling code for IO reads.
OPCODE_COMMON_QUERY_FIRMWARE_CONFIG mbox command takes 8s time when
unreachable boot targets configured.

Signed-off-by: Jitendra Bhivare <jitendra.bhivare@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
Linus Torvalds
420eb6d7ef NFS client bugfixes for Linux 4.5
Stable bugfixes:
 - Fix nfs_size_to_loff_t
 - NFSv4: Fix a dentry leak on alias use
 
 Other bugfixes:
 - Don't schedule a layoutreturn if the layout segment can be freed immediately.
 - Always set NFS_LAYOUT_RETURN_REQUESTED with lo->plh_return_iomode
 - rpcrdma_bc_receive_call() should init rq_private_buf.len
 - fix stateid handling for the NFS v4.2 operations
 - pnfs/blocklayout: fix a memeory leak when using,vmalloc_to_page
 - fix panic in gss_pipe_downcall() in fips mode
 - Fix a race between layoutget and pnfs_destroy_layout
 - Fix a race between layoutget and bulk recalls
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWzKShAAoJEGcL54qWCgDyN0QQALiX8v2wvn07vE5ZeXB5uONq
 +mfx8avhEoc3NVrpG6F4Kj+yJmHeAbkgIygnhZn4tcM/2YRxGDwlVLHb++yUTHO9
 8zEi+tiKx9f5pK2PxRQ0PjavVxO/xOyO0/QNrUdnj8hSNR9ow+YOVjEYUulbuhIg
 VAI3oSy5qIKgtDyW7w5PuPpTXLo74hPmyqHaa+ZIr2et//nJMSsw++vAmSg3oqXq
 6QkLWPHt/8yvDRRn2hKkbD9gOrFCVfaZIGLM6Q0zRWAcGTzJi94ELzPdm8cVpD1o
 eXKcufgLXPt3GOeAmxZ9kwQeebR6IFcvkYom5dsPhtMBuzXu1wpanU8PGgYIQ0VA
 88b2YNl+TZpiVbRzxSEellZq5b+zapH/VVVnYptZiq9wUTACc7jK6W2heqe5PzaT
 iepTGCAE21tV5JewcITMQHDZiOjRNdtbBzgixI7pNfMN8whU6e5NHYj6psZqT7cf
 xEEZzL+RBJuCFKhXSPbBefccA4HCRkDEpT+2QgrMbS4KKfWOg36UNbJ2kgbvcRVi
 HTqoRONR6zMzYBhyMlLaUuJ1co8nSHgEsL81Q3MwWSY6gucSW7jeJ2stR20KJIo1
 7qgod9Ac/BAIozjzywi0LtmxouPyPU8cqaboMhSRVPDKfFlqZBNBkFLNWwgoYXMa
 r1afZQwNeRRbZUR3RulE
 =/WDS
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-4.5-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Stable bugfixes:
   - Fix nfs_size_to_loff_t
   - NFSv4: Fix a dentry leak on alias use

  Other bugfixes:
   - Don't schedule a layoutreturn if the layout segment can be freed
     immediately.
   - Always set NFS_LAYOUT_RETURN_REQUESTED with lo->plh_return_iomode
   - rpcrdma_bc_receive_call() should init rq_private_buf.len
   - fix stateid handling for the NFS v4.2 operations
   - pnfs/blocklayout: fix a memeory leak when using,vmalloc_to_page
   - fix panic in gss_pipe_downcall() in fips mode
   - Fix a race between layoutget and pnfs_destroy_layout
   - Fix a race between layoutget and bulk recalls"

* tag 'nfs-for-4.5-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4.x/pnfs: Fix a race between layoutget and bulk recalls
  NFSv4.x/pnfs: Fix a race between layoutget and pnfs_destroy_layout
  auth_gss: fix panic in gss_pipe_downcall() in fips mode
  pnfs/blocklayout: fix a memeory leak when using,vmalloc_to_page
  nfs4: fix stateid handling for the NFS v4.2 operations
  NFSv4: Fix a dentry leak on alias use
  xprtrdma: rpcrdma_bc_receive_call() should init rq_private_buf.len
  pNFS: Always set NFS_LAYOUT_RETURN_REQUESTED with lo->plh_return_iomode
  pNFS: Fix pnfs_mark_matching_lsegs_return()
  nfs: fix nfs_size_to_loff_t
2016-02-23 16:39:21 -08:00
Linus Torvalds
de9e478b9d x86: fix SMAP in 32-bit environments
In commit 11f1a4b975 ("x86: reorganize SMAP handling in user space
accesses") I changed how the stac/clac instructions were generated
around the user space accesses, which then made it possible to do
batched accesses efficiently for user string copies etc.

However, in doing so, I completely spaced out, and didn't even think
about the 32-bit case.  And nobody really even seemed to notice, because
SMAP doesn't even exist until modern Skylake processors, and you'd have
to be crazy to run 32-bit kernels on a modern CPU.

Which brings us to Andy Lutomirski.

He actually tested the 32-bit kernel on new hardware, and noticed that
it doesn't work.  My bad.  The trivial fix is to add the required
uaccess begin/end markers around the raw accesses in <asm/uaccess_32.h>.

I feel a bit bad about this patch, just because that header file really
should be cleaned up to avoid all the duplicated code in it, and this
commit just expands on the problem.  But this just fixes the bug without
any bigger cleanup surgery.

Reported-and-tested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-23 16:25:20 -08:00
Trond Myklebust
9fd4b9fc76 NFSv4.x/pnfs: Fix a race between layoutget and bulk recalls
Replace another case where the layout 'plh_block_lgets' can trigger
infinite loops in send_layoutget().

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2016-02-22 17:46:34 -05:00
Trond Myklebust
2454dfea0a NFSv4.x/pnfs: Fix a race between layoutget and pnfs_destroy_layout
If the server reboots while there is a layoutget outstanding, then
the call to pnfs_choose_layoutget_stateid() will fail with an EAGAIN
error, which causes an infinite loop in send_layoutget(). The reason
why we never break out of the loop is that the layout 'plh_block_lgets'
field is never cleared.

Fix is to replace plh_block_lgets with NFS_LAYOUT_INVALID_STID, which
can be reset after a new layoutget.

Fixes: ab7d763e47 ("pNFS: Ensure nfs4_layoutget_prepare returns...")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2016-02-22 17:34:59 -05:00
Linus Torvalds
4de8ebeff8 Two more small fixes.
One is by Yang Shi who added a READ_ONCE_NOCHECK() to the scan of the
 stack made by the stack tracer. As the stack tracer scans the entire
 kernel stack, KASAN triggers seeing it as a "stack out of bounds" error.
 As the scan is looking at the contents of the stack from parent functions.
 The NOCHECK() tells KASAN that this is done on purpose, and is not some
 kind of stack overflow.
 
 The second fix is to the ftrace selftests, to retrieve the PID of executed
 commands from the shell with "$!" and not by parsing "jobs".
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJWyycyAAoJEKKk/i67LK/8ALoH/RkMZ7Cih7vXb30wB13xSNrB
 6o4ApuC4YOS9Un/4ruCXb+cGbW2LJLHkEU2ageoHLOZMvwuAM7iQ6fTUW1KxCRP2
 ECvqyqi0ZRyoi/CibxVVH9hHEAJzUTwok67nkLeZBqIN9Fglcfd7toAwgcrH3y59
 Pybyv5CV2eaff5IKoLXKZJNRLdrVLeM7v4BvdI0dxEikhWZ0XsA0RoIaNfTPqyQJ
 F6sJ/njdoMMJK4N8CCPxlvnvEOzn0DnJnfUNUQEj5J3YU9DbAHAACaBSg5oSh9oK
 BcFYKV2GIzPku1cafutRRlErcGyB2yqv7bB8Eo86zXRHbeonaj4XGJmH276ldVg=
 =srlj
 -----END PGP SIGNATURE-----

Merge tag 'trace-fixes-v4.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:
 "Two more small fixes.

  One is by Yang Shi who added a READ_ONCE_NOCHECK() to the scan of the
  stack made by the stack tracer.  As the stack tracer scans the entire
  kernel stack, KASAN triggers seeing it as a "stack out of bounds"
  error.  As the scan is looking at the contents of the stack from
  parent functions.  The NOCHECK() tells KASAN that this is done on
  purpose, and is not some kind of stack overflow.

  The second fix is to the ftrace selftests, to retrieve the PID of
  executed commands from the shell with '$!' and not by parsing 'jobs'"

* tag 'trace-fixes-v4.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing, kasan: Silence Kasan warning in check_stack of stack_tracer
  ftracetest: Fix instance test to use proper shell command for pids
2016-02-22 14:09:18 -08:00
Linus Torvalds
692b8c663c Xen bug fixes for 4.5-rc5
- Two scsiback fixes (resource leak and spurious warning).
 - Fix DMA mapping of compound pages on arm/arm64.
 - Fix some pciback regressions in MSI-X handling.
 - Fix a pcifront crash due to some uninitialize state.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJWyvatAAoJEFxbo/MsZsTRBFcH+wWnv0/N+gKib3cKCI4lwmTg
 n8iVgf8dNWwD36M2s/OlzCAglAIt8Xr6ySNvPqTerpm7lT9yXlIVQxGXTbIGuTAA
 h8Kt8WiC0BNLHHlLxBuCz62KR47DvMhsr84lFURE8FmpUiulFjXmRcbrZkHIMYRS
 l/X+xJWO1vxwrSYho0P9n3ksTWHm488DTPvZz3ICNI2G2sndDfbT3gv3tMDaQhcX
 ZaQR93vtIoldqk29Ga59vaVtksbgxHZIbasY9PQ8rqOxHJpDQbPzpjocoLxAzf50
 cioQVyKQ7i9vUvZ+B3TTAOhxisA2hDwNhLGQzmjgxe2TXeKdo3yjYwO6m1dDBzY=
 =VY/S
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.5-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen bug fixes from David Vrabel:

 - Two scsiback fixes (resource leak and spurious warning).

 - Fix DMA mapping of compound pages on arm/arm64.

 - Fix some pciback regressions in MSI-X handling.

 - Fix a pcifront crash due to some uninitialize state.

* tag 'for-linus-4.5-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/pcifront: Fix mysterious crashes when NUMA locality information was extracted.
  xen/pcifront: Report the errors better.
  xen/pciback: Save the number of MSI-X entries to be copied later.
  xen/pciback: Check PF instead of VF for PCI_COMMAND_MEMORY
  xen: fix potential integer overflow in queue_reply
  xen/arm: correctly handle DMA mapping of compound pages
  xen/scsiback: avoid warnings when adding multiple LUNs to a domain
  xen/scsiback: correct frontend counting
2016-02-22 13:57:01 -08:00
Linus Torvalds
dea08e6044 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Looks like a lot, but mostly driver fixes scattered all over as usual.

  Of note:

   1) Add conditional sched in nf conntrack in cleanup to avoid NMI
      watchdogs.  From Florian Westphal.

   2) Fix deadlock in nfnetlink cttimeout, also from Floarian.

   3) Fix handling of slaves in bonding ARP monitor validation, from Jay
      Vosburgh.

   4) Callers of ip_cmsg_send() are responsible for freeing IP options,
      some were not doing so.  Fix from Eric Dumazet.

   5) Fix per-cpu bugs in mvneta driver, from Gregory CLEMENT.

   6) Fix vlan handling in mv88e6xxx DSA driver, from Vivien Didelot.

   7) bcm7xxx PHY driver bug fixes from Florian Fainelli.

   8) Avoid unaligned accesses to protocol headers wrt.  GRE, from
      Alexander Duyck.

   9) SKB leaks and other problems in arc_emac driver, from Alexander
      Kochetkov.

  10) tcp_v4_inbound_md5_hash() releases listener socket instead of
      request socket on error path, oops.  Fix from Eric Dumazet.

  11) Missing socket release in pppoe_rcv_core() that seems to have
      existed basically forever.  From Guillaume Nault.

  12) Missing slave_dev unregister in dsa_slave_create() error path,
      from Florian Fainelli.

  13) crypto_alloc_hash() never returns NULL, fix return value check in
      __tcp_alloc_md5sig_pool.  From Insu Yun.

  14) Properly expire exception route entries in ipv4, from Xin Long.

  15) Fix races in tcp/dccp listener socket dismantle, from Eric
      Dumazet.

  16) Don't set IFF_TX_SKB_SHARING in vxlan, geneve, or GRE, it's not
      legal.  These drivers modify the SKB on transmit.  From Jiri Benc.

  17) Fix regression in the initialziation of netdev->tx_queue_len.
      From Phil Sutter.

  18) Missing unlock in tipc_nl_add_bc_link() error path, from Insu Yun.

  19) SCTP port hash sizing does not properly ensure that table is a
      power of two in size.  From Neil Horman.

  20) Fix initializing of software copy of MAC address in fmvj18x_cs
      driver, from Ken Kawasaki"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (129 commits)
  bnx2x: Fix 84833 phy command handler
  bnx2x: Fix led setting for 84858 phy.
  bnx2x: Correct 84858 PHY fw version
  bnx2x: Fix 84833 RX CRC
  bnx2x: Fix link-forcing for KR2
  net: ethernet: davicom: fix devicetree irq resource
  fmvj18x_cs: fix incorrect indexing of dev->dev_addr[] when copying the MAC address
  Driver: Vmxnet3: Update Rx ring 2 max size
  net: netcp: rework the code for get/set sw_data in dma desc
  soc: ti: knav_dma: rename pad in struct knav_dma_desc to sw_data
  net: ti: netcp: restore get/set_pad_info() functionality
  MAINTAINERS: Drop myself as xen netback maintainer
  sctp: Fix port hash table size computation
  can: ems_usb: Fix possible tx overflow
  Bluetooth: hci_core: Avoid mixing up req_complete and req_complete_skb
  net: bcmgenet: Fix internal PHY link state
  af_unix: Don't use continue to re-execute unix_stream_read_generic loop
  unix_diag: fix incorrect sign extension in unix_lookup_by_ino
  bnxt_en: Failure to update PHY is not fatal condition.
  bnxt_en: Remove unnecessary call to update PHY settings.
  ...
2016-02-22 12:18:07 -08:00
Linus Torvalds
5c102d0eca Two fixes headed for stable:
Remove an un-necessary speed_index lookup for thermal hook in the gpio-fan
 driver. The unnecessary speed lookup can hog the system.
 
 Handle negative conversion values correctly in the ads1015 driver.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWydseAAoJEMsfJm/On5mBhxgP/iVNIDIusNLBHD7VG2vtpWim
 +nAmcdllLdtuT459zGX5z5HE3b7oj8v5JYW9TUH0x+N4WhvFZ9TWgH8OXt2cuUZ3
 vgbgt9QJLTzP6PHFdhhF2rLrL1Ur5eyeV0fIlRVHj2KqZixILcutLn3+TDKE1Buc
 o2Y5+CXI/XJZ2y5U8SOK5xYC1EmYkijc5rTmDdF1/5DhNzupO4S6bW/MdY9Qo5X6
 0qkyLQ01eH1GqnvUA9VNhDjlU7NZWVFpd/StL8IQk313E+79m3vwAlSNK6a33eC2
 w4nuFLA4zPfJwRYI7dN8jePCs+Y10ucfmX+EKFU7JzC4WTvyv1P76Ilrd6/ZuDJx
 YQ8ClT9ZscT9xqr+0MnhkBeE1Mu6YZoDLVaSCymcIp1E7mTAMY8yMBknFcWEZIX7
 cJuqMskvBHn7o1WCzzYOqFgOv4csm3fcazeEzp+R25Ds4NE715ClUfFZI6gLc9lg
 vYlLtU2mQGI3IsdD/a1/WOefOPGsFrGwVIAcgsi5zlCYFY/BSa9PLu/dWoLtomnP
 GEUUDIEyKsZ7om9B4B9229izL9jRT5MsYbh7vJb/1XULpXMBg1ESqhamxmtxV+oU
 J5fIlpw0g1/83mul8rq9FIeAxTcgAXsrGtJUWpatd/rHrQOgP/w5w9N3MkX7LDLE
 ccP+uEEP2z/i+PgOmr0L
 =luAI
 -----END PGP SIGNATURE-----

Merge tag 'hwmon-for-linus-v4.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "Two fixes headed for stable:

   - Remove an unnecessary speed_index lookup for thermal hook in the
     gpio-fan driver.  The unnecessary speed lookup can hog the system.

   - Handle negative conversion values correctly in the ads1015 driver"

* tag 'hwmon-for-linus-v4.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (gpio-fan) Remove un-necessary speed_index lookup for thermal hook
  hwmon: (ads1015) Handle negative conversion values correctly
2016-02-22 12:12:46 -08:00
Linus Torvalds
a16152c897 Additional 4.5-rc5 fixes
- One fix ocrdma - The new CQ API support was added to ocrdma, but they
   got the arming logic wrong, so without this, transfers eventually fail
   when they fail to arm the interrupt properly under load
 - Two related fixes for mlx4 - When we added the 64bit extended counters
   support to the core IB code, they forgot to update the RoCE side of the
   mlx4 driver (the IB side they properly updated).  I debated whether or
   not to include these patches as they could be considered feature
   enablement patches, but the existing code will blindy copy the 32bit
   counters, whether any counters were requested at all (a bug).  These
   two patches make it A) check to see that counters were requested and
   B) copy the right counters (the 64bit support is new, the 32bit is
   not).  For that reason I went ahead and took them.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJWxI9xAAoJELgmozMOVy/dqRgP/3JbB5MMcqqrxCXGE7874YOO
 ZXldH2nJ+uIffWn1IUDJd01vWKDbxBD5joD+HgH1XLjmSQZf7I6APmayTMx43k/k
 Ps4fg4iDU2HY35w4s8hCgIj1WmKtYWPA2wHFB1VUO8nhLQD0fxCInw3feDhOXu23
 VYSBOypHIMHZfldOog/RXQ4/cCStTmhyDlPtcldWTpMm/SmBEs/iGoUXe5gLHZfk
 aKEK2OOC/Yk/iK4flnYsNcgDhFfTcFlpbUtBfLYvFd9UxBCkPsB7WE5BT06zvEHe
 Cp5IN7093Nhh66uKyDHyzBJFMrZB3crcqmEGsauE6iBF6iQItlvVMch7DHP4FEWP
 2VlYKbhINH7yfl/bXq9CyljA2wcPS5MDtQgrEwa/qMeA8sqEQWnyPgS4xGKnufoQ
 SbvPY9pdzhU2G6weoRSiVfpMXh2dl/kbOcsn/rywfyrJ4Ne1lE60Di75WEpwxD+I
 4cRktAZp5W2gnv9NJRA/iYMQCVxJ9Sd7aj+dFfWOzJf3uuOlvMALTPuWF4zyeT1U
 VKpptmAmq0l3zVtpnmuVNO4BqC+00L+sojrkeGX9ZhLBaJZfUkj10sjPAWGHNU28
 liQ3Wnqb7q5Z7ROBs5bbMub7Q4+hWiEINPQtFm4f43bmievI9QgPjoNQXjXea7vI
 W9WXEhYS1fjI9z3w4Oqg
 =QD36
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "One ocrdma fix:

   - The new CQ API support was added to ocrdma, but they got the arming
     logic wrong, so without this, transfers eventually fail when they
     fail to arm the interrupt properly under load

  Two related fixes for mlx4:

   - When we added the 64bit extended counters support to the core IB
     code, they forgot to update the RoCE side of the mlx4 driver (the
     IB side they properly updated).

     I debated whether or not to include these patches as they could be
     considered feature enablement patches, but the existing code will
     blindy copy the 32bit counters, whether any counters were requested
     at all (a bug).

     These two patches make it (a) check to see that counters were
     requested and (b) copy the right counters (the 64bit support is
     new, the 32bit is not).  For that reason I went ahead and took
     them"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  IB/mlx4: Add support for the port info class for RoCE ports
  IB/mlx4: Add support for extended counters over RoCE ports
  RDMA/ocrdma: Fix arm logic to align with new cq API
2016-02-22 12:04:11 -08:00
Linus Torvalds
7ee302f6f7 Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "Some bugfixes from I2C for you:

  A fix for a RuntimePM regression with OMAP, a fix to enable TCO for
  Lewisburg platforms, and a typo fix while we are here"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i801: Adding Intel Lewisburg support for iTCO
  i2c: uniphier: fix typos in error messages
  i2c: omap: Fix PM regression with deferred probe for pm_runtime_reinit
2016-02-22 11:55:18 -08:00