[SCSI] megaraid_sas: Fix synchronization problem between sysPD IO path and AEN path
There is syncronization problem between sysPD IO path and AEN path. Driver
maintains instance->pd_list[] array, which will get updated(by calling
function megasas_get_pd_list[]), whenever any of below events occurs-
At same time running sysPD IO will be accessing the same array
instance->pd_list[], which is getting updated in AEN path, because of this IO
may not get correct PD info from instance->pd_list[] array.
Signed-off-by: Adam Radford <adam.radford@lsi.com> Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Felipe Pena [Wed, 16 Oct 2013 00:29:50 +0000 (21:29 -0300)]
[SCSI] lpfc: Fix typo on NULL assignment
In the lpfc_ct_free_iocb function after freeing associated memory to the
ctiocb->context3, the ctiocb->context1 is set to NULL instead of context3.
Signed-off-by: Felipe Pena <felipensp@gmail.com> Acked-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Stewart, Sean [Tue, 15 Oct 2013 15:52:54 +0000 (15:52 +0000)]
[SCSI] scsi_dh_alua: ALUA handler attach should succeed while TPG is transitioning
During testing, it was discovered that when a device tries to attach to the
alua handler while in TPG state of transitioning, the alua_rtpg function will
wait for it to exit the state before allowing it to continue. As a result, if
the 60 second timeout expires, the alua handler will not attach to the device.
To fix this, I have introduced an input argument to alua_rtpg called
wait_for_transition. The idea is that it will wait for the transition to
complete before an activation (because the current TPG state has some bearing
in that case), but during a discovery if it is transitioning, it will not
wait, and will store the state as standby for the time being.
I believe the precedent exists for this from commit c0d289b3e59577532c45ee9110ef81bd7b341272 Since if the device reports a state
of transitioning, it can transition to other more valid states, and it has
been established TPGS is supported on the device, if it is attaching.
Signed-off-by: Sean Stewart <Sean.Stewart@netapp.com> Acked-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Stewart, Sean [Tue, 15 Oct 2013 15:52:39 +0000 (15:52 +0000)]
[SCSI] scsi_dh_alua: ALUA check sense should retry device internal reset unit attention
When the scsi_dh_alua handler issues an RTPG during initialization, if it gets
0x06/0x29/0x04 as the sense, it will fail to attach the handler. NetApp
E-Series returns 0x29/0x00 for power on, and 0x29/0x04 for conditions that
cause the controller to reboot again. These conditions should be treated
identically within the handler.
Signed-off-by: Sean Stewart <Sean.Stewart@netapp.com> Acked-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bradley Grove [Tue, 1 Oct 2013 18:26:02 +0000 (14:26 -0400)]
[SCSI] esas2r: Fixes for big-endian platforms
In esas2r_format_init_msg(), sgl_page_size and epoch_time params
are converted to little endian and the firmware version read from
the hba is converted to cpu endianess.
In esas2r_rq_init_request, correct and simplify the construction
of the SCSI handle.
These fixes are the result of testing on a PPC64 machine.
Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bradley Grove [Tue, 1 Oct 2013 18:26:01 +0000 (14:26 -0400)]
[SCSI] esas2r: Directly call kernel functions for atomic bit operations
Previously the code embedded the kernel's test_bit/clear_bit
functions in wrappers that accepted u32 parameters. The
wrapper cast these parameters to longs before passing them
to the kernel's bit functions. This did not work properly
on platforms with 64-bit longs.
Signed-off-by: Bradley Grove <bgrove@attotech.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Smart [Thu, 10 Oct 2013 16:24:07 +0000 (12:24 -0400)]
[SCSI] lpfc 8.3.43: Fixed not processing task management IOCB response status
This patch implements the changes requested by Jeremy Linton:
http://marc.info/?l=linux-scsi&m=136242124409687&w=2
The patch revises the command issuing behavior, detecting cases where the
Task Mgmt command may have completed but with a non-successful status, which it
previously treated as a successful TMF. The patch also corrects a flushing of
I/O that was done which should only be done on successful TMF completion.
Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Bottomley [Fri, 4 Oct 2013 21:42:24 +0000 (21:42 +0000)]
[SCSI] Derive the FLUSH_TIMEOUT from the basic I/O timeout
Rather than having a separate constant for specifying the timeout on FLUSH
operations, use the basic I/O timeout value that is already configurable
on a per target basis to derive the FLUSH timeout. Looking at the current
definitions of these timeout values, the FLUSH operation is supposed to have
a value that is twice the normal timeout value. This patch preserves this
relationship while leveraging the flexibility of specifying the I/O timeout.
Based on a prior patch by KY Srinivasan <kys@microsoft.com>
Reviewed-by: KY Srinivasan <kys@microsoft.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Supports below logging facilities,
Inbound outbound queues dump.
Non fatal dump in case of IO failures.
Fatal dump in case of firmware failure.
[jejb: checkpatch spacing fixes] Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] pm80xx: Phy settings support for motherboard controller.
Phy profile implementation to support phy settings feature
for motherboard controllers.
[jejb: checkpatch fixes] Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] pm80xx: IButton security feature support for motherboard controllers.
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] pm80xx: Print SAS address of IO failed device.
[jejb: checkpatch fixes] Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Firmware is having an issue. When a single IO request crosses
4G boundary, system will crash. To avoid the issue single sg is
converted into extended sg.
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] pm80xx: Queue rotation logic for inbound and outbound queues.
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] pm80xx: Set device state response logic fix.
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Fix for indirect data transfer mode in case of SMP request.
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] pm80xx: Device id changes to support series 8 controllers.
Updated pci id table with device, vendor, subdevice and subvendor ids
for 8074, 8076, 8077 SAS/SATA 12G controllers. Added 12G related macros.
Signed-off-by: Anandkumar.Santhanam@pmcs.com Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Chris Leech [Thu, 26 Sep 2013 16:09:44 +0000 (09:09 -0700)]
[SCSI] iscsi_tcp: consider session state in iscsi_sw_sk_state_check
It seems some iSCSI targets (including the Linux kernel target) close
the TCP connection from the target side immediately after processing a
session logout.
When a TCP FIN comes in right after the iSCSI logout response,
iscsi_sw_sk_state_check sees the local socket as not yet being in
CLOSE_WAIT or CLOSE and logs an error. But the initiator would close
the connection right after processing the logout response anyway, and
the error is confusing to admins who just requested that the session be
shut down.
This adds a check of the session state, and suppresses the error if we
are in the process of logging out.
Signed-off-by: Chris Leech <cleech@redhat.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Oliver Neukum [Mon, 16 Sep 2013 11:28:15 +0000 (13:28 +0200)]
[SCSI] sd: Add error handling during flushing caches
It makes no sense to flush the cache of a device without medium.
Errors during suspend must be handled according to their causes.
Errors due to missing media or unplugged devices must be ignored.
Errors due to devices being offlined must also be ignored.
The error returns must be modified so that the generic layer
understands them.
[jejb: fix up whitespace and other formatting problems] Signed-off-by: Oliver Neukum <oneukum@suse.de> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Somehow older areca firmware versions have issues with
scsi_get_vpd_page() and a large buffer, the firmware
seems to crash and the scsi error-handler will start endless
recovery retries.
Limiting the buf-size to 64-bytes fixes this issue with older
firmware versions (<1.49 for my controller).
Akinobu Mita [Wed, 18 Sep 2013 12:27:28 +0000 (21:27 +0900)]
[SCSI] scsi_debug: fix sparse warnings related to data integrity field
Each member in data integrity field tuple is big-endian. But the
endianness of the values being compared with these members are not
annotated. So this fixes these sparse warnings.
Reported-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Akinobu Mita [Wed, 18 Sep 2013 12:27:27 +0000 (21:27 +0900)]
[SCSI] scsi_debug: fix invalid value check for guard module parameter
In the module initialization, invalid value for guard module parameter
is detected by the following check:
if (scsi_debug_guard > 1) {
printk(KERN_ERR "scsi_debug_init: guard must be 0 or 1\n");
return -EINVAL;
}
But this check isn't enough, because the type of scsi_debug_guard is
'int' and scsi_debug_guard could be a negative value.
This fixes it by changing the type of scsi_debug_guard to 'unsigned int'
instead of adding extra check for a negative value.
Reported-by: Joe Perches <joe@perches.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Akinobu Mita [Wed, 18 Sep 2013 12:27:26 +0000 (21:27 +0900)]
[SCSI] scsi_debug: avoid partial copying PI from prot_sglist to dif_storep
If data integrity support is enabled, prot_verify_write() is called in
response to WRITE commands and it verifies protection info from
prot_sglist by comparing against data sglist, and copies protection info
to dif_storep.
When multiple blocks are transfered by a WRITE command, it verifies and
copies these blocks one by one. So if it fails to verify protection
info in the middle of blocks, the actual data transfer to fake_storep
isn't proceeded at all although protection info for some blocks are
already copied to dif_storep. Therefore, it breaks the data integrity
between fake_storep and dif_storep.
This fixes it by ensuring that copying protection info to dif_storep is
done after all blocks are successfully verified. Reusing dif_copy_prot()
with supporting the opposite direction simplifies this fix.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Akinobu Mita [Wed, 18 Sep 2013 12:27:25 +0000 (21:27 +0900)]
[SCSI] scsi_debug: factor out copying PI from dif_storep to prot_sglist
If data integrity support is enabled, prot_verify_read() is called in
response to READ commands and it verifies protection info from dif_storep
by comparing against fake_storep, and copies protection info to
prot_sglist.
This factors out the portion of copying protection info into a separate
function. It will also be reused in the next change after supporting
the opposite direction (copying prot_sglist to dif_storep).
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Akinobu Mita [Wed, 18 Sep 2013 12:27:24 +0000 (21:27 +0900)]
[SCSI] scsi_debug: fix buffer overrun when DIF/DIX is enabled and virtual_gb > 0
If the module parameter virtual_gb is greater than 0, the READ command
may request the blocks which exceed actual ramdisk storage (fake_storep).
prot_verify_read() should treat those blocks as wrap around the end of
fake_storep. But it actually causes fake_storep and dif_storep buffer
overruns.
This fixes these buffer overruns. In order to simplify the fix,
this also introduces fake_store() and dif_store() which return
corresponding wrap around addresses.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix SGL posting for unaligned ICD values
If certain configuration it is possible that ICD range is not page-aligned.
SGL posting failed in these configuration and driver load was not success.
This fix aligns ICD range values and SGL posting for IO is done.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Invalidate WRB in Abort/Reset Path
When iSCSI stack invokes Abort or Reset handlers, the aborted tasks
Invalid Bit in WRB needs to be set. Else FW will not be aware of
the command invalidated which leads to BAD_WRB error posted by FW.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix Insufficient Buffer Error returned in MBX Completion
When MBX_Cmd completion happens with error code Insufficient Buffer,
the MBX_Cmd is posted again with the new buffer size posted by FW.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix log level for protocol specific logs
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix MSIx creation for SKH-R adapter
The MSIx to be created for SKH-R adapter should be based on
eq_count returned by get_fw_config.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Display Port Identifier for each iSCSI function
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Dispaly CID available for connection offload
Display CID available on each iSCSI Fn which can be used to
offload a connection. The display is split across available CID
on each chute.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix chute cleanup during drivers unload.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix connection offload to support Dual Chute.
The connection is offload to each chute in a round-robin manner
if both the chute is loaded with iSCSI protocol
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix CID allocation/freeing to support Dual chute mode
Configuration parameters returns the number of connection that
can be offloaded one each chute.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix WRB_Q posting to support Dual Chute mode
Configuration parameters return number of CID each chute supports. The WRB_Q
is created for the passed CID count. If both the Chute has iSCSI Protocol then
WRB_Q creation is in a round robin mechanism.
For BE-X family iSCSI protocol is loaded only on single chute.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix SGL Initilization and posting Pages for Dual Chute
Initialization of SGL and related PAGE posting is to be done for the chute.
Based on configuration value of each Chute,SGL initialization and page posting
is done.
For BE-X family iSCSI protocol is loaded only on single chute
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix Template HDR support for Dual Chute mode
Template HDR is created for each chute which has iSCSI Protocol loaded.
For BE-X family iSCSI protocol is loaded only on single chute.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix changes in ASYNC Path for SKH-R adapter
DEF_Q[HDR/DATA] is created on the chute on which iSCSI Protocol is loaded.
When a connection is offloaded, the DEF_Q HDR/Data ID needs to be passed.
FW posts ASYNC message received from target on the passed DEF_Q. Connection
can be offloaded on any of the chute so DEF_Q is created on each Chute.
Change in the ASYNC path initialization based on the configuration parameters
returned for each chute.
For BE-X family iSCSI protocol is loaded only on single chute.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Config parameters update for Dual Chute Support
On the adapter iSCSI protocol can be loaded on either one or both
the CHUTE.Check on which CHUTE iSCSI Protocol is loaded and get
configuration parameters based on which driver initization is done.
For BE-X family iSCSI protocol is loaded only on single chute.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix soft lock up issue during UE or if FW taking time to respond
The timeout set in MBX_CMD is 100sec and the ready bit checking in BMBX
mode is done for 4sec. After 4sec the task is scheduled out for 5 secs
to avoid kernel soft lockup stack trace. The loop of 4sec ready bit check
and then schedule out is done until the following conditon occur
- The Ready Bit is Set
- The timeout set in MBX_CMD expires
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix locking mechanism in Unsol Path
The default pdu is a common resource and needs to be protected
while manipulating it.
Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix negotiated parameters upload to FW
- Removed the check of MaxXmitDSL == 0 as this is not a possible
case.
- Update connection offload data structure for SKH-R adapters.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] be2iscsi: Fix repeated issue of MAC ADDR get IOCTL
Storing MAC ADDR of each function in it's priv structure to
avoid issuing MAC_ADDR get IOCTL. Based on a flag set/unset
it's decided if MAC_ADDR is stored in priv structure or IOCTL
needs to be issued.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
When MBX CMD is posted in MCCQ and if command times out,during
mccq resource cleanup for the timed out command mccq->count
was not decremented. The led to BUG_ON being hit.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Allocating memory in the Host which will be used by the
TOE functionality during Session Offload. This fix will
allow performance improvement as adapter memory contention
will be reduced.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Eddie Wai [Thu, 26 Sep 2013 05:01:20 +0000 (22:01 -0700)]
[SCSI] BNX2FC: hung task timeout warning observed when rmmod bnx2x with active FCoE targets
[v2] - removed the interface->enabled flag setting which prevented the
fcoe ctlr link from being brought back up after a MTU change
A rtnl_lock deadlock was observed from the rmmod thread where it
tries to unregister the fcoe_ctlr device. This unregistration
triggered a flush of the sysfs queue of the associated ctlr and led to
a call to the set_fcoe_ctlr_enabled routine. This will eventually propagate
down to call the bnx2fc_disable routine and contented for the rtnl_lock
in the same context.
This patch creates a subset of the bnx2fc_enable/disable routine which
removes the unnecesary rtnl_lock and the bnx2fc_dev_lock acquisition from
the set_fcoe_ctlr_enabled path.
Eddie Wai [Wed, 18 Sep 2013 05:33:10 +0000 (22:33 -0700)]
[SCSI] bnx2fc: Fixed a SCSI CMD cmpl race condition between ABTS and CLEANUP
In the case when a SCSI_CMD times out, bnx2fc will initiate the sending of the
ABTS. However, if the SCSI layer's SCSI command timer also times out, it'll
instantiate a task abort of the same xid.
The race condition this patch tries to fix is as follows:
SCSI_CMD timeout (20s)
thread 1 thread 2
send ABTS
rx ABTS cmpl
task abort_eh
explicit LOGO since ABTS was engaged
CLEANUP cmpl
SCSI_CMD cmpl (ABTS cmpl)
instantiate RRQ
wait 10s
attempt to send RRQ (because of LOGO, it wouldn't continue)
Note that there is no call to scsi_done for this SCSI_CMD cmpletion
in this path.
The patch changes the path of execution to call scsi_done immediately
instead of instantiating the RRQ.
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] scsi_transport_iscsi: Add support to set CHAP entries
For offload iSCSI like qla4xxx, CHAP entries are stored in adapter's
flash.
This patch adds support to add/update CHAP entries in adapter's flash
using iscsi tools, like Open-iSCSI.
[SCSI] qla4xxx: Support setting of local CHAP index for flash target entry
Support setting of CHAP_OUT_IDX param for the target entry in flash.
Setting of valid local CHAP index with enable CHAP AUTH for that
flash target entry and disabling CHAP AUTH will invalidate the CHAP
index for the flash target entry.
Earlier logic for driver created iscsi_session->discovery_parent_idx
was to store ram index of a sendtarget entry, but driver frees
sendtarget ram index as soon as firmware is done with discovery,
which is available for further use. So changing the logic to point
iscsi_session->discovery_parent_idx to store sendtarget flashnode index.
[SCSI] megaraid_sas: fixes for few endianess issues
Fixed two issues in this patch-
1) In function megasas_get_pd_list(), data read(pd_addr->deviceId) from DMAed memory is converted to CPU's endianess.
2) While register AEN, removed some endianness conversion on some fields, since their endianess is already converted.
Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Khalid Aziz [Fri, 13 Sep 2013 19:44:06 +0000 (13:44 -0600)]
[SCSI] buslogic: Added check for DMA mapping errors
Added check for DMA mapping errors for request sense data
buffer. Checking for mapping error can avoid potential wild
writes. This patch was prompted by the warning from
dma_unmap when kernel is compiled with CONFIG_DMA_API_DEBUG.
Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com> Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This feature gathers active and cumulative per fnic stats for io,
abort, terminate, reset, vlan discovery path and it also includes
various important stats for debugging issues. It also provided
debugfs and ioctl interface for user to retrieve these stats.
It also provides functionality to reset cumulative stats through
user interface.
Signed-off-by: Hiral Patel <hiralpat@cisco.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
[SCSI] fnic: host reset returns nonzero value(errno) on success
Fixed appropriate error codes that returns negative error number on failure,
and 0 on success. fnic_reset() is used directly by the fc transport callback
issue_fc_host_lip which requires a negative error number on failure.
Jack Wang [Thu, 12 Sep 2013 15:29:52 +0000 (17:29 +0200)]
[SCSI] export device_busy for sdev
If you mutiple devices connect to a host, we might be interested in
have an intensive I/O workload on one disk, and notice starvation on others.
This give the user more hint about current infight io for scsi device.
Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Jon Mason [Wed, 11 Sep 2013 22:38:13 +0000 (15:38 -0700)]
[SCSI] lpfc: remove unnecessary read of PCI_CAP_ID_EXP
The PCIE capability offset is saved during PCI bus walking. It will
remove an unnecessary search in the PCI configuration space if this
value is referenced instead of reacquiring it. Also, pci_is_pcie is a
better way of determining if the device is PCIE or not (as it uses the
same saved PCIE capability offset).
Signed-off-by: Jon Mason <jdmason@kudzu.us> Acked-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Let's say the disk_events_workfn() calls sd_check_events() which tries
to send test_unit_ready() and because of sd_revalidate_disk() trying to
send another commands the test_unit_ready() might be re-queued as the
tagged command queuing is disabled.
The problem is, the test_unit_ready request doesn't get counted the
first time it is queued, so the later decrement of q->nr_pending in
blk_pm_requeue_request makes it unbalanced.
Fix this by calling blk_pm_runtime_init before add_disk so that all
requests initiated there will all be counted.
Signed-off-by: Aaron Lu <aaron.lu@intel.com> Reported-and-tested-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Cc: stable@vger.kernel.org Signed-off-by: James Bottomley <JBottomley@Parallels.com>
If an invalid IOCB is returned on the response queue then the index into the
request queue map could be invalid and could return to us a bogus value. This
could cause us to try to deference an invalid pointer and cause an exception.
If we encounter this condition, simply return as no context can be established
for this response.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Khalid Aziz [Wed, 25 Sep 2013 17:45:11 +0000 (11:45 -0600)]
[SCSI] BusLogic: Fix an oops when intializing multimaster adapter
This fixes an oops caused by buslogic driver when initializing a BusLogic
MultiMaster adapter. Initialization code used scope of a variable
incorrectly which created a NULL pointer. Oops message is below:
Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com> Cc: <stable@vger.kernel.org> # 3.11.x Reported-by: Pierre Uszynski <pierre@rahul.net> Tested-by: Pierre Uszynski <pierre@rahul.net> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Linus Torvalds [Sun, 13 Oct 2013 18:41:26 +0000 (11:41 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog fixes from Wim Van Sebroeck:
"This will fix a deadlock on the ts72xx_wdt driver, fix bitmasks in the
kempld_wdt driver and fix a section mismatch in the sunxi_wdt driver"
* git://www.linux-watchdog.org/linux-watchdog:
watchdog: sunxi: Fix section mismatch
watchdog: kempld_wdt: Fix bit mask definition
watchdog: ts72xx_wdt: locking bug in ioctl
Maxime Ripard [Sat, 5 Oct 2013 14:20:17 +0000 (16:20 +0200)]
watchdog: sunxi: Fix section mismatch
This driver has a section mismatch, for probe and remove functions,
leading to the following warning during the compilation.
WARNING: drivers/watchdog/built-in.o(.data+0x24): Section mismatch in
reference from the variable sunxi_wdt_driver to the function
.init.text:sunxi_wdt_probe()
The variable sunxi_wdt_driver references
the function __init sunxi_wdt_probe()
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Linus Torvalds [Sun, 13 Oct 2013 16:59:10 +0000 (09:59 -0700)]
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A small batch of fixes this week, mostly OMAP related. Nothing stands
out as particularly controversial.
Also a fix for a 3.12-rc1 timer regression for Exynos platforms,
including the Chromebooks"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: exynos: dts: Update 5250 arch timer node with clock frequency
ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
ARM: mach-omap2: board-generic: fix undefined symbol
ARM: dts: Fix pinctrl mask for omap3
ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT
ARM: exynos: dts: Update 5250 arch timer node with clock frequency
Without the "clock-frequency" property in arch timer node, could able
to see the below crash dump.
[<c0014e28>] (unwind_backtrace+0x0/0xf4) from [<c0011808>] (show_stack+0x10/0x14)
[<c0011808>] (show_stack+0x10/0x14) from [<c036ac1c>] (dump_stack+0x7c/0xb0)
[<c036ac1c>] (dump_stack+0x7c/0xb0) from [<c01ab760>] (Ldiv0_64+0x8/0x18)
[<c01ab760>] (Ldiv0_64+0x8/0x18) from [<c0062f60>] (clockevents_config.part.2+0x1c/0x74)
[<c0062f60>] (clockevents_config.part.2+0x1c/0x74) from [<c0062fd8>] (clockevents_config_and_register+0x20/0x2c)
[<c0062fd8>] (clockevents_config_and_register+0x20/0x2c) from [<c02b8e8c>] (arch_timer_setup+0xa8/0x134)
[<c02b8e8c>] (arch_timer_setup+0xa8/0x134) from [<c04b47b4>] (arch_timer_init+0x1f4/0x24c)
[<c04b47b4>] (arch_timer_init+0x1f4/0x24c) from [<c04b40d8>] (clocksource_of_init+0x34/0x58)
[<c04b40d8>] (clocksource_of_init+0x34/0x58) from [<c049ed8c>] (time_init+0x20/0x2c)
[<c049ed8c>] (time_init+0x20/0x2c) from [<c049b95c>] (start_kernel+0x1e0/0x39c)
THis is because the Exynos u-boot, for example on the Chromebooks, doesn't set
up the CNTFRQ register as expected by arch_timer. Instead, we have to specify
the frequency in the device tree like this.
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
[olof: Changed subject, added comment, elaborated on commit message] Signed-off-by: Olof Johansson <olof@lixom.net>
Olof Johansson [Sun, 13 Oct 2013 16:33:32 +0000 (09:33 -0700)]
Merge tag 'fixes-against-v3.12-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
From Tony Lindgren:
Few fixes for omap3 related hangs and errors that people have
noticed now that people are actually using the device tree
based booting for omap3.
Also one regression fix for timer compile for dra7xx when
omap5 is not selected, and a LED regression fix for n900.
* tag 'fixes-against-v3.12-rc3-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2: RX-51: Add missing max_current to rx51_lp5523_led_config
ARM: mach-omap2: board-generic: fix undefined symbol
ARM: dts: Fix pinctrl mask for omap3
ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
ARM: OMAP2: gpmc-onenand: fix sync mode setup with DT
Linus Torvalds [Sun, 13 Oct 2013 16:13:28 +0000 (09:13 -0700)]
Merge branch 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"This patchset includes a bugfix to prevent a kernel crash when memory
in page zero is accessed by the kernel itself, e.g. via
probe_kernel_read().
Furthermore we now export flush_cache_page() which is needed
(indirectly) by the lustre filesystem. The other patches remove
unused functions and optimizes the page fault handler to only evaluate
variables if needed, which again protects against possible kernel
crashes"
* 'parisc-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: let probe_kernel_read() capture access to page zero
parisc: optimize variable initialization in do_page_fault
parisc: fix interruption handler to respect pagefault_disable()
parisc: mark parisc_terminate() noreturn and cold.
parisc: remove unused syscall_ipi() function.
parisc: kill SMP single function call interrupt
parisc: Export flush_cache_page() (needed by lustre)
Linus Torvalds [Sun, 13 Oct 2013 16:02:03 +0000 (09:02 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes from Vinod Koul:
"Another week, time to send another fixes request taking time out of
extended weekend for the festivities in this part of the world.
We have two fixes from Sergei for rcar driver and one fixing memory
leak of edma driver by Geyslan"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dma: edma.c: remove edma_desc leakage
rcar-hpbdma: add parameter to set_slave() method
rcar-hpbdma: remove shdma_free_irq() calls
parisc: optimize variable initialization in do_page_fault
The attached change defers the initialization of the variables tsk, mm
and flags until they are needed. As a result, the code won't crash if a
kernel probe is done with a corrupt context and the code will be better
optimized.
Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
Helge Deller [Tue, 1 Oct 2013 19:54:46 +0000 (21:54 +0200)]
parisc: fix interruption handler to respect pagefault_disable()
Running an "echo t > /proc/sysrq-trigger" crashes the parisc kernel. The
problem is, that in print_worker_info() we try to read the workqueue info via
the probe_kernel_read() functions which use pagefault_disable() to avoid
crashes like this:
probe_kernel_read(&pwq, &worker->current_pwq, sizeof(pwq));
probe_kernel_read(&wq, &pwq->wq, sizeof(wq));
probe_kernel_read(name, wq->name, sizeof(name) - 1);
The problem here is, that the first probe_kernel_read(&pwq) might return zero
in pwq and as such the following probe_kernel_reads() try to access contents of
the page zero which is read protected and generate a kernel segfault.
With this patch we fix the interruption handler to call parisc_terminate()
directly only if pagefault_disable() was not called (in which case
preempt_count()==0). Otherwise we hand over to the pagefault handler which
will try to look up the faulting address in the fixup tables.
Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org> # v3.0+ Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
Jiang Liu [Wed, 11 Sep 2013 16:07:18 +0000 (00:07 +0800)]
parisc: kill SMP single function call interrupt
Commit 9a46ad6d6df3b54 "smp: make smp_call_function_many() use logic
similar to smp_call_function_single()" has unified the way to handle
single and multiple cross-CPU function calls. Now only one interrupt
is needed for architecture specific code to support generic SMP function
call interfaces, so kill the redundant single function call interrupt.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Jiang Liu <liuj97@gmail.com> Signed-off-by: Helge Deller <deller@gmx.de>
projects / karo-tx-linux.git / log