commit a9e170e286 ("scsi: qla2xxx: Fix uninitialized work element")
moved initializiation of work element earlier in the probe to fix call
stack. However, it still leaves a window where interrupt can be
generated before work element is initialized. Fix that window by
initializing work element before we are requesting IRQs.
[mkp: fixed typos]
Fixes: a9e170e286 ("scsi: qla2xxx: Fix uninitialized work element")
Cc: <stable@vger.kernel.org> # 4.13
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Based on the FC4 type, login will proceed to either FCP or FC-NVMe
remote ports.
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In some environments, user can choose to not enable SCSI-MQ but wants to
use FC-NVMe feature of the driver. Since driver relies on Q-Pairs to
allocate FC-NVMe resources, use existing module parameter to create
Q-Pairs when FC-NVMe is enabled.
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If there are IO's running and host reset or chip reset is triggered,
IO's can fail due to rport time out. During chip reset recovery process,
driver notifies the transport layer that remote port no longer exist, by
calling fc_remote_port_delete(). When this function is called, it
actually delays deletion by "blocking" it. It sets the remote port state
to "FC_PORTSTATE_BLOCKED" and sets FC_RPORT_DEVLOSS_PENDING. When
driver tries to abort the command by calling its abort handler function,
abort handler will wait until remote port state is blocked state or wait
for dev_loss_tmo time. Due to this blocking, rport times out and results
in an IO failure. This patch adds a check for any active reset process
before calling abort handler function.
[mkp: typo]
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
ql2xmaxqdepth is the module parameter that seeds the per target
queue depth in the Scsi midlayer (sdev->queue_depth). Performance
testing revealed that increasing this value would improve IOPS
numbers under certain workloads.
Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Calling sp->free() ensures the context-correct free routine is called.
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
SFP can come in 2 formats: short range/SR and long range/LR. For LR,
user the can increase the number of Buffer to Buffer credits between end
points via Cavium's command line tool. By default, FW uses a lower BB
Credit value optimized for SR. This patch will read the SFP for each
link up event and during chip reset sequence. If the SFP type and
setting are mismatch, then the chip is reset 1 time to use the
appropriate setting.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update ha->wq max_active from 1 to default. MQ interrupts are queued up
via this work queue. This allows interrupts to be process in parrallel,
instead of serialized by the work queue.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Driver will perform following
- Set PFLG_DRIVER_REMOVING flag and do not disable PCIe error reporting
during adapter shutdown.
- If PCIe device count is already zero, return correct error type from
PCI error interface.
- When device is offline, return correct error type from PCIe error
path.
- If there is board disable thread active during shutdown and PCIe
device count is zero then cancel scheduling board disable thread
during shutdown and return.
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver held spinlocks during callbacks for NVME errors which
resulted in a deadlock because recovery LS cmds needed the same lock.
Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add support to the driver to set the exchange threshold value for
the number of outstanding AENs.
Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Darren Trapp <darren.trapp@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch does not change any functionality.
Following cleanups have been done as requested by reviewer
- Changed waitQ --> waitq
- Collapsed multiple debug statements into single
- Remove extra parentheses in if-else as per operator precedence
- Remove unnecessary casting
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This code provides the interfaces to register remote and local ports of
FC4 type 0x28 with the FC-NVMe transport and transports the requests
(FC-NVMe FC link services and FC-NVMe commands IUs) to the fabric. It
also provides the support for allocating h/w queues and aborting FC-NVMe
FC requests.
Signed-off-by: Darren Trapp <darren.trapp@cavium.com>
Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch adds logic to handle the completion of FC-NVMe commands and
creates a sub-command in the SRB command structure to manage NVMe
commands.
Signed-off-by: Darren Trapp <darren.trapp@cavium.com>
Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Added logic to change the login process into an optional PRIL step for
FC-NVMe ports as a separate operation, such that we can change type to
0x28 (NVMe).
Currently, the driver performs the PLOGI/PRLI together as one operation,
but if the discovered port is an NVMe port then we first issue the PLOGI
and then we issue the PRLI. Also, the fabric discovery logic was changed
to mark each discovered FC NVMe port, so that we can register them with
the FC-NVMe transport later.
Signed-off-by: Darren Trapp <darren.trapp@cavium.com>
Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add call back to door bell for qpair. This help reduce access to
qla_hw_data structure, in order to reduce cach thrash.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
For ISP27XX, use shadow register to read FW provided REQQ's consumer
index. The shadow register is dma'ed by firmware.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
- Move chip_reset, enable_class_2 fields from qla_hw_data to qla_qpair
to reduce cache thrash for target MQ.
- Optimizations to reduce unnecessary memory load for good path io.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In target mode driver, queue pairs are not created during driver load
time, instead they are created at the configuration time after chip
reset. If a user tries to load/unload driver after queue pairs are
created, then there would be mailbox failure, while deleting queue
pairs. Flag is added to check if queue pairs are created or not. Queue
pairs will be deleted only If they were created during target
configuration.
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Enable Multi Queue for Target mode. At Initiator LUN scan time, each LUN
is assign to a QPair. Each QPair is affinitize to certain CPU. When new
cmd arrives from the wire, the lunid is used to search for qpair. The
qpair's affinitized cpuid will be used to queue up the work element.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In Current code, Req Q 0, RespQ 0 & hardware_lock are the main resources
for sending and process completion of Target IO. These resources are now
referenced behind a new qpair/"struct qla_qpair base_qpair". Main path
IO handle will access those resources via the qpair pointer in
preparation for Target MQ.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Merge active/outstanding cmd arrays from target side and initiator side
together in prepration for Target Multi Queue support.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Previously, the ql2xexchoffld module parameter was used to control the
max number of exchanges to be offload onto host memory.
Module parameter ql_dm_tgt_ex_pct was used to control the percentage of
exchanges allocated to the Target side.
With this patch, module parameter ql_dm_tgt_ex_pct is no longer used to
control exchanges for the driver. New module parameter ql2xiniexchg is
added to control exchanges between target mode and initiator mode.
With the updated module parameters, users can control the exact number
of exchanges for either Initiator or Target. The exchange offload
feature will be automatically enabled when the total number of exchanges
exceeds 2048 limit.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Assign unique id to all traces and logs for debug purpose.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Hung task timeouts can result if a qlogic board breaks unexpectedly
while running I/O. These tasks become hung because command srb reference
counts are not going to zero, hence the affected srbs and commands do
not get freed. This fix accounts for this extra reference in the srbs in
the case of a board failure.
Fixes: a465537ad1 ("qla2xxx: Disable the adapter and skip error recovery in case of register disconnect")
Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes following signature in the stack trace:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000374
IP: [<ffffffffa06ec8eb>] qla2x00_sp_free_dma+0xeb/0x2a0 [qla2xxx]
Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When pci_enable_device() or pci_enable_device_mem() fail in
qla2x00_probe_one() we bail out but do a call to
pci_disable_device(). This causes the dev_WARN_ON() in
pci_disable_device() to trigger, as the device wasn't enabled
previously.
So instead of taking the 'probe_out' error path we can directly return
*iff* one of the pci_enable_device() calls fails.
Additionally rename the 'probe_out' goto label's name to the more
descriptive 'disable_device'.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Fixes: e315cd28b9 ("[SCSI] qla2xxx: Code changes for qla data structure refactoring")
Cc: <stable@vger.kernel.org>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This is seven small fixes which are all for user visible issues that
fortunately only occur in rare circumstances. The most serious is the
sr one in which QEMU can cause us to read beyond the end of a buffer
(I don't think it's exploitable, but just in case). The next is the
sd capacity fix which means all non 512 byte sector drives greater
than 2TB fail to be correctly sized. The rest are either in new
drivers (qedf) or on error legs.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is seven small fixes which are all for user visible issues that
fortunately only occur in rare circumstances.
The most serious is the sr one in which QEMU can cause us to read
beyond the end of a buffer (I don't think it's exploitable, but just
in case).
The next is the sd capacity fix which means all non 512 byte sector
drives greater than 2TB fail to be correctly sized.
The rest are either in new drivers (qedf) or on error legs"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ipr: do not set DID_PASSTHROUGH on CHECK CONDITION
scsi: aacraid: fix PCI error recovery path
scsi: sd: Fix capacity calculation with 32-bit sector_t
scsi: qla2xxx: Add fix to read correct register value for ISP82xx.
scsi: qedf: Fix crash due to unsolicited FIP VLAN response.
scsi: sr: Sanity check returned mode data
scsi: sd: Consider max_xfer_blocks if opt_xfer_blocks is unusable
There are several local or function parameter pointers that are being
assigned NULL after a kfree where and these have no effect and hence can
be removed.
Fixes various cppcheck warnings:
"Assignment of function parameter has no effect outside the
function. Did you forget dereferencing it"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add fix to read correct register value for ISP82xx, during check for
register disconnect.ISP82xx has different base register.
Fixes: a465537ad1 ("qla2xxx: Disable the adapter and skip error recovery in case of register disconnect")
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Thirteen small fixes: The hopefully final effort to get the lpfc nvme
kconfig problems sorted, there's one important sg fix (user can induce
read after end of buffer) and one minor enhancement (adding an extra
PCI ID to qedi). The rest are a set of minor fixes, which mostly occur
as user visible in error legs or on specific devices.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Thirteen small fixes: The hopefully final effort to get the lpfc nvme
kconfig problems sorted, there's one important sg fix (user can induce
read after end of buffer) and one minor enhancement (adding an extra
PCI ID to qedi). The rest are a set of minor fixes, which mostly occur
as user visible in error legs or on specific devices"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: remove the duplicated checking for supporting clkscaling
scsi: lpfc: fix building without debugfs support
scsi: lpfc: Fix PT2PT PRLI reject
scsi: hpsa: fix volume offline state
scsi: libsas: fix ata xfer length
scsi: scsi_dh_alua: Warn if the first argument of alua_rtpg_queue() is NULL
scsi: scsi_dh_alua: Ensure that alua_activate() calls the completion function
scsi: scsi_dh_alua: Check scsi_device_get() return value
scsi: sg: check length passed to SG_NEXT_CMD_LEN
scsi: ufshcd-platform: remove the useless cast in ERR_PTR/IS_ERR
scsi: qedi: Add PCI device-ID for QL41xxx adapters.
scsi: aacraid: Fix potential null access
scsi: qla2xxx: Fix crash in qla2xxx_eh_abort on bad ptr
Current driver wait for FW to be in the ready state before
processing in-coming commands. For Arbitrated Loop or
Point-to- Point (not switch), FW Ready state can take a while.
FW will transition to ready state after all Nports have been
logged in. In the mean time, certain initiators have completed
the login and starts IO. Driver needs to start processing all
queues if FW is already started.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
For target mode, when new scsi command arrive, driver first performs
a look up of the SCSI Host. The current look up method is based on
the ALPA portion of the NPort ID. For Cisco switch, the ALPA can
not be used as the index. Instead, the new search method is based
on the full value of the Nport_ID via btree lib.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
After a Qlogic card breaks when initializing (test case), the system can
crash in qla2xxx_eh_abort if processing anything but a scsi command type
srb.
Fixes: 1535aa75a3 ("scsi: qla2xxx: fix invalid DMA access after command aborts in PCI device remove")
Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com>
Acked-By: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This is the set of stuff that didn't quite make the initial pull and a
set of fixes for stuff which did. The new stuff is basically lpfc
(nvme), qedi and aacraid. The fixes cover a lot of previously
submitted stuff, the most important of which probably covers some of
the failing irq vectors allocation and other fallout from having the
SCSI command allocated as part of the block allocation functions.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"This is the set of stuff that didn't quite make the initial pull and a
set of fixes for stuff which did.
The new stuff is basically lpfc (nvme), qedi and aacraid. The fixes
cover a lot of previously submitted stuff, the most important of which
probably covers some of the failing irq vectors allocation and other
fallout from having the SCSI command allocated as part of the block
allocation functions"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (59 commits)
scsi: qedi: Fix memory leak in tmf response processing.
scsi: aacraid: remove redundant zero check on ret
scsi: lpfc: use proper format string for dma_addr_t
scsi: lpfc: use div_u64 for 64-bit division
scsi: mac_scsi: Fix MAC_SCSI=m option when SCSI=m
scsi: cciss: correct check map error.
scsi: qla2xxx: fix spelling mistake: "seperator" -> "separator"
scsi: aacraid: Fixed expander hotplug for SMART family
scsi: mpt3sas: switch to pci_alloc_irq_vectors
scsi: qedf: fixup compilation warning about atomic_t usage
scsi: remove scsi_execute_req_flags
scsi: merge __scsi_execute into scsi_execute
scsi: simplify scsi_execute_req_flags
scsi: make the sense header argument to scsi_test_unit_ready mandatory
scsi: sd: improve TUR handling in sd_check_events
scsi: always zero sshdr in scsi_normalize_sense
scsi: scsi_dh_emc: return success in clariion_std_inquiry()
scsi: fix memory leak of sdpk on when gd fails to allocate
scsi: sd: make sd_devt_release() static
scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.
...
Pull SCSI target updates from Nicholas Bellinger:
"The highlights this round include:
- enable dual mode (initiator + target) qla2xxx operation. (Quinn +
Himanshu)
- add a framework for qla2xxx async fabric discovery. (Quinn +
Himanshu)
- enable iscsi PDU DDP completion offload in cxgbit/T6 NICs. (Varun)
- fix target-core handling of aborted failed commands. (Bart)
- fix a long standing target-core issue NULL pointer dereference with
active I/O LUN shutdown. (Rob Millner + Bryant + nab)"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (44 commits)
target: Add counters for ABORT_TASK success + failure
iscsi-target: Fix early login failure statistics misses
target: Fix NULL dereference during LUN lookup + active I/O shutdown
target: Delete tmr from list before processing
target: Fix handling of aborted failed commands
uapi: fix linux/target_core_user.h userspace compilation errors
target: export protocol identifier
qla2xxx: Fix a warning reported by the "smatch" static checker
target/iscsi: Fix unsolicited data seq_end_offset calculation
target/cxgbit: add T6 iSCSI DDP completion feature
target/cxgbit: Enable DDP for T6 only if data sequence and pdu are in order
target/cxgbit: Use T6 specific macros to get ETH/IP hdr len
target/cxgbit: use cxgb4_tp_smt_idx() to get smt idx
target/iscsi: split iscsit_check_dataout_hdr()
target: Remove command flag CMD_T_DEV_ACTIVE
target: Remove command flag CMD_T_BUSY
target: Move session check from target_put_sess_cmd() into target_release_cmd_kref()
target: Inline transport_cmd_check_stop()
target: Remove an overly chatty debug message
target: Stop execution if CMD_T_STOP has been set
...
This patch cleaned up queue configuration code, such that once
initialized, we should not touch msix_count value. This will prevent
incorrect numbers of MSI-X vectors requested while performing target
mode configuration.
[mkp: fixed Fixes: hash]
Cc: <stable@vger.kernel.org>
Fixes: d74595278f ("scsi: qla2xxx: Add multiple queue pair functionality.")
Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This update includes the usual round of major driver updates (ncr5380,
ufs, lpfc, be2iscsi, hisi_sas, storvsc, cxlflash, aacraid,
megaraid_sas, ). There's also an assortment of minor fixes and the
major update of switching a bunch of drivers to pci_alloc_irq_vectors
from Christoph.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This update includes the usual round of major driver updates (ncr5380,
ufs, lpfc, be2iscsi, hisi_sas, storvsc, cxlflash, aacraid,
megaraid_sas, ...).
There's also an assortment of minor fixes and the major update of
switching a bunch of drivers to pci_alloc_irq_vectors from Christoph"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (188 commits)
scsi: megaraid_sas: handle dma_addr_t right on 32-bit
scsi: megaraid_sas: array overflow in megasas_dump_frame()
scsi: snic: switch to pci_irq_alloc_vectors
scsi: megaraid_sas: driver version upgrade
scsi: megaraid_sas: Change RAID_1_10_RMW_CMDS to RAID_1_PEER_CMDS and set value to 2
scsi: megaraid_sas: Indentation and smatch warning fixes
scsi: megaraid_sas: Cleanup VD_EXT_DEBUG and SPAN_DEBUG related debug prints
scsi: megaraid_sas: Increase internal command pool
scsi: megaraid_sas: Use synchronize_irq to wait for IRQs to complete
scsi: megaraid_sas: Bail out the driver load if ld_list_query fails
scsi: megaraid_sas: Change build_mpt_mfi_pass_thru to return void
scsi: megaraid_sas: During OCR, if get_ctrl_info fails do not continue with OCR
scsi: megaraid_sas: Do not set fp_possible if TM capable for non-RW syspdIO, change fp_possible to bool
scsi: megaraid_sas: Remove unused pd_index from megasas_build_ld_nonrw_fusion
scsi: megaraid_sas: megasas_return_cmd does not memset IO frame to zero
scsi: megaraid_sas: max_fw_cmds are decremented twice, remove duplicate
scsi: megaraid_sas: update can_queue only if the new value is less
scsi: megaraid_sas: Change max_cmd from u32 to u16 in all functions
scsi: megaraid_sas: set pd_after_lb from MR_BuildRaidContext and initialize pDevHandle to MR_DEVHANDLE_INVALID
scsi: megaraid_sas: latest controller OCR capability from FW before sending shutdown DCMD
...
Six fairly small fixes. None is a real show stopper, two automation
detected problems: one memory leak, one use after free and four others
each of which fixes something that has been a significant source of
annoyance to someone.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Six fairly small fixes. None is a real show stopper, two automation
detected problems: one memory leak, one use after free and four others
each of which fixes something that has been a significant source of
annoyance to someone"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: zfcp: fix use-after-free by not tracing WKA port open/close on failed send
scsi: aacraid: Fix INTx/MSI-x issue with older controllers
scsi: mpt3sas: disable ASPM for MPI2 controllers
scsi: mpt3sas: Force request partial completion alignment
scsi: qla2xxx: Avoid that issuing a LIP triggers a kernel crash
scsi: qla2xxx: Fix a recently introduced memory leak
This patch does not change any functionality but avoids that sparse
complains about using variable-length arrays.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Cc: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This patch simplifies SRB structure usage in driver.
- Simplify sp->done() and sp->free() interfaces.
- Remove sp->fcport->vha to use vha pointer from sp.
- Use sp->vha context in qla2x00_rel_sp().
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Current code blindly does State Change Registration when
the link is up. Move SCR behind fabric scan, so that arbitrated
loop scan would not get erroneous error message.
Some of the other improvements are as follows
- Add session deletion for TPRLO and send acknowledgment for TPRLO.
- Enable FW option to move ABTS, RIDA & PUREX from RSPQ to ATIOQ.
- Save NPort ID early in link init.
- Move ABTS & RIDA to ATIOQ helps in keeping command ordering and
link up sequence ordering.
- Save Nport ID and update VP map so that SCSI CMD/ATIO won't be dropped.
- fcport alloc does the initializes memory to zero. Remove memset to
zero since It might corrupt link list.
- Turn off Registration for State Change MB in loop mode.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Currently code performs a full scan of the fabric for
every RSCN. Its an expensive process in a noisy large SAN.
This patch optimizes expensive fabric discovery process by
scanning switch for the affected port when RSCN is received.
Currently Initiator Mode code makes login/logout decision without
knowledge of target mode. This causes driver and firmware to go
out-of-sync. This framework synchronizes both initiator mode
personality and target mode personality in making login/logout
decision.
This patch adds following capabilities in the driver
- Send Notification Acknowledgement asynchronously.
- Update session/fcport state asynchronously.
- Create a session or fcport struct asynchronously.
- Send GNL asynchronously. The command will ask FW to
provide a list of FC Port entries FW knows about.
- Send GPDB asynchronously. The command will ask FW to
provide detail data of an FC Port FW knows about or
perform ADISC to verify the state of the session.
- Send GPNID asynchronously. The command will ask switch
to provide WWPN for provided NPort ID.
- Send GPSC asynchronously. The command will ask switch
to provide registered port speed for provided WWPN.
- Send GIDPN asynchronously. The command will ask the
switch to provide Nport ID for provided WWPN.
- In driver unload path, schedule all session for deletion
and wait for deletion to complete before allowing driver
unload to proceed.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
[ bvanassche: fixed spelling in patch description ]
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Callback for sp->done expects scsi_qla_host is passed in as argument,
Instead qla_hw_data is passed in.
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Instead define the timeout behavior purely based on the host_template
eh_timed_out method and wire up the existing transport implementations
in the host templates. This also clears up the confusion that the
transport template method overrides the host template one, so some
drivers have to re-override the transport template one.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Pull SCSI target fixes from Bart Van Assche:
- two small fixes for the ibmvscsis driver
- ten patches with bug fixes for the target mode of the qla2xxx driver
- four patches that avoid that the "sparse" and "smatch" static
analyzer tools report false positives for the qla2xxx code base
* 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux:
qla2xxx: Disable out-of-order processing by default in firmware
qla2xxx: Fix erroneous invalid handle message
qla2xxx: Reduce exess wait during chip reset
qla2xxx: Terminate exchange if corrupted
qla2xxx: Fix crash due to null pointer access
qla2xxx: Collect additional information to debug fw dump
qla2xxx: Reset reserved field in firmware options to 0
qla2xxx: Set tcm_qla2xxx version to automatically track qla2xxx version
qla2xxx: Include ATIO queue in firmware dump when in target mode
qla2xxx: Fix wrong IOCB type assumption
qla2xxx: Avoid that building with W=1 triggers complaints about set-but-not-used variables
qla2xxx: Move two arrays from header files to .c files
qla2xxx: Declare an array with file scope static
qla2xxx: Fix indentation
ibmvscsis: Fix sleeping in interrupt context
ibmvscsis: Fix max transfer length
During code inspection, while investigating following stack trace
seen on one of the test setup, we found out there was possibility
of memory leak becuase driver was not unwinding the stack properly.
This issue has not been reproduced in a test environment or on a
customer setup.
Here's stack trace that was seen.
[1469877.797315] Call Trace:
[1469877.799940] [<ffffffffa03ab6e9>] qla2x00_mem_alloc+0xb09/0x10c0 [qla2xxx]
[1469877.806980] [<ffffffffa03ac50a>] qla2x00_probe_one+0x86a/0x1b50 [qla2xxx]
[1469877.814013] [<ffffffff813b6d01>] ? __pm_runtime_resume+0x51/0xa0
[1469877.820265] [<ffffffff8157c1f5>] ? _raw_spin_lock_irqsave+0x25/0x90
[1469877.826776] [<ffffffff8157cd2d>] ? _raw_spin_unlock_irqrestore+0x6d/0x80
[1469877.833720] [<ffffffff810741d1>] ? preempt_count_sub+0xb1/0x100
[1469877.839885] [<ffffffff8157cd0c>] ? _raw_spin_unlock_irqrestore+0x4c/0x80
[1469877.846830] [<ffffffff81319b9c>] local_pci_probe+0x4c/0xb0
[1469877.852562] [<ffffffff810741d1>] ? preempt_count_sub+0xb1/0x100
[1469877.858727] [<ffffffff81319c89>] pci_call_probe+0x89/0xb0
Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
[ bvanassche: Fixed spelling in patch description ]
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Commit 093df73771 ("scsi: qla2xxx: Fix Target mode handling with
Multiqueue changes.") introduces two bodies of code that look similar
but with s/req/rsp/ in the second instance. But in one case, it looks
like this conversion was missed.
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Acked-by: Quinn Tran <Quinn.Tran@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
- Fix race condition between dpc_thread accessing Multiqueue resources
and qla2x00_remove_one thread trying to free resource.
- Fix out of order free for Multiqueue resources. Also, Multiqueue
interrupts needs a workqueue. Interrupt needed to stop before
the wq can be destroyed.
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Tell the SCSI layer how many hardware queues we have based on the number
of max queue pairs created. The number of max queue pairs created will
depend on number of MSI-X vector count.
This feature can be turned on via CONFIG_SCSI_MQ_DEFAULT or passing
scsi_mod.use_blk_mq=Y as a parameter to the kernel
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Replaced existing multiple queue functionality with framework
that allows for the creation of pairs of request and response queues,
either at start of day or dynamically.
Queue pair creation depend on module parameter "ql2xmqsupport",
which need to be enabled to create queue pair.
Signed-off-by: Sawan Chandak <sawan.chandak@cavium.com>
Signed-off-by: Michael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The previous commit 1535aa75a3 ("qla2xxx: fix invalid DMA access after
command aborts in PCI device remove") introduced a regression during an
EEH recovery, since the change to the qla2x00_abort_all_cmds() function
calls qla2xxx_eh_abort(), which verifies the EEH recovery condition but
handles it heavy-handed. (commit a465537ad1 "qla2xxx: Disable the
adapter and skip error recovery in case of register disconnect.")
This problem warrants a more general/optimistic solution right into
qla2xxx_eh_abort() (eg in case a real command abort arrives during EEH
recovery, or if it takes long enough to trigger command aborts); but
it's still worth to add a check to ensure the code added by the previous
commit is correct and contained within its owner function.
This commit just adds a 'if (!ha->flags.eeh_busy)' check around it.
(ahem; a trivial fix for this -rc series; sorry for this oversight.)
With it applied, both PCI device remove and EEH recovery works fine.
Fixes: 1535aa75a3 ("scsi: qla2xxx: fix invalid DMA access after command aborts in PCI device remove")
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a command is aborted in the kernel but not in the adapter, it might be
considered complete and its DMA memory released, but it is still alive in
the adapter, which will trigger an invalid DMA access upon its completion
(in the DMA operations to deliver the command response to the driver).
On powerpc platforms with IOMMU/EEH capabilities, the problem is observed
during PCI device removal with ongoing IO requests -- which might trigger
an EEH event very often, pointing to a 'TCE Request Page Access Error'.
In that path, which is qla2x00_remove_one(), the commands are aborted in
qla2x00_abort_all_cmds(), which does not perform an abort in the adapter
as is done in qla2xxx_eh_abort() for example.
So, this patch changes qla2x00_abort_all_cmds() to abort commands in the
adapter too, with a call to qla2xxx_eh_abort(), which already implements
all the logic to submit abort requests and handle responses.
Reported-by: Naresh Bannoth <nbannoth@in.ibm.com>
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When the driver is unloading, in qla2x00_remove_one(), there is a single
call/point in time to abort ongoing commands, qla2x00_abort_all_cmds(),
which is still several steps away from the call to scsi_remove_host().
If more commands continue to arrive and be processed during that
interval, when the driver is tearing down and releasing its structures,
it might potentially hit an oops due to invalid memory access:
Unable to handle kernel paging request for data at address 0x00000138
<...>
NIP [d000000004700a40] qla2xxx_queuecommand+0x80/0x3f0 [qla2xxx]
LR [d000000004700a10] qla2xxx_queuecommand+0x50/0x3f0 [qla2xxx]
So, fail commands in qla2xxx_queuecommand() if the UNLOADING bit is set.
Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A system can get hung task timeouts if a qlogic board fails during
initialization (if the board breaks again or fails the init). The hang
involves the scsi scan.
In a nutshell, since commit beb9e315e6 ("qla2xxx: Prevent removal and
board_disable race"):
...it is possible to have freed ha (base_vha->hw) early by a call to
qla2x00_remove_one when pdev->enable_cnt equals zero:
if (!atomic_read(&pdev->enable_cnt)) {
scsi_host_put(base_vha->host);
kfree(ha);
pci_set_drvdata(pdev, NULL);
return;
Almost always, the scsi_host_put above frees the vha structure
(attached to the end of the Scsi_Host we're putting) since it's the last
put, and life is good. However, if we are entering this routine because
the adapter has broken sometime during initialization AND a scsi scan is
already in progress (and has done its own scsi_host_get), vha will not
be freed. What's worse, the scsi scan will access the freed ha structure
through qla2xxx_scan_finished:
if (time > vha->hw->loop_reset_delay * HZ)
return 1;
The scsi scan keeps checking to see if a scan is complete by calling
qla2xxx_scan_finished. There is a timeout value that limits the length
of time a scan can take (hw->loop_reset_delay, usually set to 5
seconds), but this definition is in the data structure (hw) that can get
freed early.
This can yield unpredictable results, the worst of which is that the
scsi scan can hang indefinitely. This happens when the freed structure
gets reused and loop_reset_delay gets overwritten with garbage, which
the scan obliviously uses as its timeout value.
The fix for this is simple: at the top of qla2xxx_scan_finished, check
for the UNLOADING bit in the vha structure (_vha is not freed at this
point). If UNLOADING is set, we exit the scan for this adapter
immediately. After this last reference to the ha structure, we'll exit
the scan for this adapter, and continue on.
This problem is hard to hit, but I have run into it doing negative
testing many times now (with a test specifically designed to bring it
out), so I can verify that this fix works. My testing has been against a
RHEL7 driver variant, but the bug and patch are equally relevant to to
the upstream driver.
Fixes: beb9e315e6 ("qla2xxx: Prevent removal and board_disable race")
Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Bill Kuzeja <william.kuzeja@stratus.com>
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Trivial fix to spelling mistakes in ql_dbg messages.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The "if (test_bit(UNLOADING..." line was indented one tab more than it
should have been. There was an extra parenthesis around the
qla2x00_reset_active() function call. I lined up the conditions a bit
so that it shows how they group together.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If there is error recovery going on due to command timeout and
there is register disconnect, then disable the adapter.
Signed-off-by: Sawan Chandak <sawan.chandak@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
During hot swap of PCI device, there can be PCI error on device,
during normal driver unload. The race between normal driver unload and
driver unload due to PCI error, can lead to system crash.Fix is to check
if there is unload going on and allow that function to unload the driver.
Signed-off-by: Sawan Chandak <sawan.chandak@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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>
[ Upstream Commit 84e32a06f4 ]
Commit 84e32a0 ("qla2xxx: Use pci_enable_msix_range() instead of
pci_enable_msix()") introduced a regression when target mode is enabled.
In qla24xx_enable_msix(), ha->max_rsp_queues was incorrectly set
to a value higher than the number of response queues allocated causing
an invalid dereference. Specifically here in qla2x00_init_rings():
*rsp->in_ptr = 0;
Add additional check to make sure the pointer is valid. following
call stack will be seen
---- 8< ----
RIP: 0010:[<ffffffffa02ccadc>] [<ffffffffa02ccadc>] qla2x00_init_rings+0xdc/0x320 [qla2xxx]
RSP: 0018:ffff880429447dd8 EFLAGS: 00010082
....
Call Trace:
[<ffffffffa02ceb40>] qla2x00_abort_isp+0x170/0x6b0 [qla2xxx]
[<ffffffffa02c6f77>] qla2x00_do_dpc+0x357/0x7f0 [qla2xxx]
[<ffffffffa02c6c20>] ? qla2x00_relogin+0x260/0x260 [qla2xxx]
[<ffffffff8107d2c9>] kthread+0xc9/0xe0
[<ffffffff8107d200>] ? flush_kthread_worker+0x90/0x90
[<ffffffff8172cc6f>] ret_from_fork+0x3f/0x70
[<ffffffff8107d200>] ? flush_kthread_worker+0x90/0x90
---- 8< ----
Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Pull SCSI target updates from Nicholas Bellinger:
"The highlights this round include:
- Introduce configfs support for unlocked configfs_depend_item()
(krzysztof + andrezej)
- Conversion of usb-gadget target driver to new function registration
interface (andrzej + sebastian)
- Enable qla2xxx FC target mode support for Extended Logins (himansu +
giridhar)
- Enable qla2xxx FC target mode support for Exchange Offload (himansu +
giridhar)
- Add qla2xxx FC target mode irq affinity notification + selective
command queuing. (quinn + himanshu)
- Fix iscsi-target deadlock in se_node_acl configfs deletion (sagi +
nab)
- Convert se_node_acl configfs deletion + se_node_acl->queue_depth to
proper se_session->sess_kref + target_get_session() usage. (hch +
sagi + nab)
- Fix long-standing race between se_node_acl->acl_kref get and
get_initiator_node_acl() lookup. (hch + nab)
- Fix target/user block-size handling, and make sure netlink reaches
all network namespaces (sheng + andy)
Note there is an outstanding bug-fix series for remote I_T nexus port
TMR LUN_RESET has been posted and still being tested, and will likely
become post -rc1 material at this point"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (56 commits)
scsi: qla2xxxx: avoid type mismatch in comparison
target/user: Make sure netlink would reach all network namespaces
target: Obtain se_node_acl->acl_kref during get_initiator_node_acl
target: Convert ACL change queue_depth se_session reference usage
iscsi-target: Fix potential dead-lock during node acl delete
ib_srpt: Convert acl lookup to modern get_initiator_node_acl usage
tcm_fc: Convert acl lookup to modern get_initiator_node_acl usage
tcm_fc: Wait for command completion before freeing a session
target: Fix a memory leak in target_dev_lba_map_store()
target: Support aborting tasks with a 64-bit tag
usb/gadget: Remove set-but-not-used variables
target: Remove an unused variable
target: Fix indentation in target_core_configfs.c
target/user: Allow user to set block size before enabling device
iser-target: Fix non negative ERR_PTR isert_device_get usage
target/fcoe: Add tag support to tcm_fc
qla2xxx: Check for online flag instead of active reset when transmitting responses
qla2xxx: Set all queues to 4k
qla2xxx: Disable ZIO at start time.
qla2xxx: Move atioq to a different lock to reduce lock contention
...
set ATIO/Request/Response Queues and Default number
of outstanding command to 4k.
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
99% of the time the ATIOQ has SCSI command. The other 1% of time
is something else. Most of the time this interrupt does not need
to hold the hardware_lock. We're moving the ATIO interrupt thread
to a different lock to reduce lock contention.
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Sessions management (add, deleted, modify) currently are serialized
through the hardware_lock. Hardware_lock is a high traffic lock.
This lock is accessed by both the transmit & receive sides.
Sessions management is now moved off to another lock call sess_lock.
This is done to reduce lock contention and increase traffic throughput.
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Until now ack'ing of a new PLOGI has only been delayed if there
was an existing session for the same WWN. Ack was released when
the session deletion completed.
If there was another WWN session with the same fc_id/loop_id pair
(aka "conflicting session"), PLOGI was still ack'ed immediately.
This potentially caused a problem when old session deletion logged
fc_id/loop_id out of FW after new session has been established.
Two work-arounds were attempted before:
1. Dropping PLOGIs until conflicting session goes away.
2. Detecting initiator being logged out of FW and issuing LOGO
to force re-login.
This patch introduces proper solution to the problem where PLOGI
is held until either existing session with same WWN or any
conflicting session goes away. Mechanism supports one session holding
two PLOGI acks as well as one PLOGI ack being held by many sessions.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
1. Initiator A is logged in with fc_id(1)/loop_id(1)
2. Initiator A re-logs in with fc_id(2)/loop_id(2)
3. Part of old session deletion async logoout for 1/1 is queued
4. Initiator B logs in with fc_id(1)/loop_id(1), starts
passing data and creates session.
5. Async logo from 3 is processed by DPC and sent to FW
Now initiator B has the session but is logged out from FW.
This condition is detected first with CTIO error 29 at which
point we should delete current session. During session
deletion we will send LOGO to initiator to force re-login.
Under rare circumstances initiator might be logged out of FW,
not have driver session, but still think it's logged in.
E.g. the above sequence plus session deletion due to re-config.
Incoming commands will fail to create local session because
initiator is not found in FW. In this case we also issue LOGO
to initiator to force him re-login.
Finally this patch fixes exchange leak when commands where
received in logged out state. In this case loop_id must be
set to FFFF when corresponding exchange is terminated. The
patch modifies exchange termination to always use FFFF,
since in certain scenarios it's impossible to tell whether
command was received in logged in or logged out state.
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This patch enables Exchange offload support in Qlogic ISP.
To enable exchange offload with Qlogic ISP24XX/25XX/26XX,
set module parameter ql2xexchoffld to any non-zero number.
This will alow ISP firmware to store exchange data structures
used by firmware to host memory provided by driver. ISP firmware
can supports upto 32k total active exchanges.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This patch enables Extended Logins support in Qlogic ISP.
To enable extended login with Qlogic ISP24XX/25XX/26XX,
set module parameter ql2xexlogins to any non-zero number.
This will alow ISP firmware to store port database structure
information of remote login sessions to host memory provided
by driver. ISP firmware supports upto 16k total logins.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Remove firmware binary names for the ISPs, which are not submitted to
linux-firmware.
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Reviewed-by: Julian Calaby <julian.calaby@gmail.com>
Reviewed-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch changes the !blk-mq path to the same defaults as the blk-mq
I/O path by always enabling block tagging, and always using host wide
tags. We've had blk-mq available for a few releases so bugs with
this mode should have been ironed out, and this ensures we get better
coverage of over tagging setup over different configs.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This includes one new driver: cxlflash plus the usual grab bag of updates for
the major drivers: qla2xxx, ipr, storvsc, pm80xx, hptiop, plus a few assorted
fixes.
Signed-off-by: James Bottomley <JBottomley@Odin.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull first round of SCSI updates from James Bottomley:
"This includes one new driver: cxlflash plus the usual grab bag of
updates for the major drivers: qla2xxx, ipr, storvsc, pm80xx, hptiop,
plus a few assorted fixes.
There's another tranch coming, but I want to incubate it another few
days in the checkers, plus it includes a mpt2sas separated lifetime
fix, which Avago won't get done testing until Friday"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (85 commits)
aic94xx: set an error code on failure
storvsc: Set the error code correctly in failure conditions
storvsc: Allow write_same when host is windows 10
storvsc: use storage protocol version to determine storage capabilities
storvsc: use correct defaults for values determined by protocol negotiation
storvsc: Untangle the storage protocol negotiation from the vmbus protocol negotiation.
storvsc: Use a single value to track protocol versions
storvsc: Rather than look for sets of specific protocol versions, make decisions based on ranges.
cxlflash: Remove unused variable from queuecommand
cxlflash: shift wrapping bug in afu_link_reset()
cxlflash: off by one bug in cxlflash_show_port_status()
cxlflash: Virtual LUN support
cxlflash: Superpipe support
cxlflash: Base error recovery support
qla2xxx: Update driver version to 8.07.00.26-k
qla2xxx: Add pci device id 0x2261.
qla2xxx: Fix missing device login retries.
qla2xxx: do not clear slot in outstanding cmd array
qla2xxx: Remove decrement of sp reference count in abort handler.
qla2xxx: Add support to show MPI and PEP FW version for ISP27xx.
...
On certain conditions, login failures will just invoke
qla2x00_mark_device_lost() with the intend to do login again;
but if login_retry has been set already, that would fail to set the
relogin needed flag which is required to wakeup the DPC to retry.
Signed-off-by: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Fix for memory leak when command is not found by firmware due to
mismatch in sp reference count.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
If an SRB is NULL but the handle is in range just drop the
command instead of also resetting the adapter. If the handle
is in range then the command was valid at some point and may
have been aborted. Resetting the adapter can lead to extended
recovery times in this case.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Aovid crashing the system in the scenario where firmware
just completes the command and it can not find the command
during abort mailbox processing. This scenario can lead to
sp reference counter being zero. Instead of crashing the
system, use WARN_ON to print warning in log file.
Signed-off-by: Hiral Patel <hiral.patel@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Detected these variables by building with W=1.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
There are multiple reasons for disabling this:
1. It provides no functional benefit. We pretty much only get a few more
sysfs entries for each port, but all that information is already
available from /sys/kernel/debug/target/qla-session-X
2. It already only works in private-loop mode. By disabling we'll be
getting more uniform behavior with fabric mode.
3. It creates complications for the new PLOGI handling mechanism:
scsi_transport_fc port deletion timer could race with new session
from initiator and cause logout after successful login.
Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
RSCN processing in qla2xxx driver can run in parallel with ELS/IO
processing. As such the decision to remove disappeared fc port's
session could be stale, because a new login sequence has occurred
since and created a brand new session.
Previous mechanism of dealing with this by delaying deletion request
was prone to erroneous deletions if the event that was supposed to
cancel the deletion never arrived or has been delayed in processing.
New mechanism relies on a time-like generation counter to serialize
RSCN updates relative to ELS/IO updates.
Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Since cmds go into qla_tgt_wq and TMRs don't, it's possible that TMR
like TASK_ABORT can be queued over the cmd for which it was meant.
To avoid this race, use a per-port list to keep track of cmds that
are enqueued to qla_tgt_wq but not yet processed. When a TMR arrives,
iterate through this list and remove any cmds that match the TMR.
This patch supports TASK_ABORT and LUN_RESET.
Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Swapnil Nagle <swapnil.nagle@purestorage.com>
Signed-off-by: Alexei Potashnik <alexei@purestorage.com>
Acked-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
