This patch modifies lpfc to register for Link Integrity events via the use
of an RDF ELS and to perform Link Integrity FPIN logging.
Specifically, the driver was modified to:
- Format and issue the RDF ELS immediately following SCR registration.
This registers the ability of the driver to receive FPIN ELS.
- Adds decoding of the FPIN els into the received descriptors, with
logging of the Link Integrity event information. After decoding, the ELS
is delivered to the scsi fc transport to be delivered to any user-space
applications.
- To aid in logging, simple helpers were added to create enum to name
string lookup functions that utilize the initialization helpers from the
fc_els.h header.
- Note: base header definitions for the ELS's don't populate the
descriptor payloads. As such, lpfc creates it's own version of the
structures, using the base definitions (mostly headers) and additionally
declaring the descriptors that will complete the population of the ELS.
Link: https://lore.kernel.org/r/20200210173155.547-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update copyrights to 2020 for files modified in the 12.6.0.4 patch set.
Link: https://lore.kernel.org/r/20200128002312.16346-13-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The current code does some odd +1 over maximum xri count checks and
requires that the lun_queue_count can't be bigger than maximum xri count
divided by 8. These items are bogus.
Clean the code up to cap lun_queue_count to maximum xri count.
Link: https://lore.kernel.org/r/20200128002312.16346-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There was report of an odd "Fix me..." log message, which was tracked down
to the lpfc_els_rcv_rps() routine. This was in handling of a very old and
obsolete ELS - Read Port Status. The RPS ELS was defined in FC-LS-1, but
deprecated in FC-LS-2, and removed from all later FC-LS revisions. It was
replaced by the Read Diagnostic Parameters (RDP) ELS and the Link Error
Status Block descriptor.
There should be no support for the RSP ELS. Remove support from driver.
Link: https://lore.kernel.org/r/20200128002312.16346-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Coverity reported a memory corruption error for the fdmi attributes
routines:
CID 15768 [Memory Corruption] Out-of-bounds access on FDMI
Sloppy coding of the fmdi structures. In both the lpfc_fdmi_attr_def and
lpfc_fdmi_reg_port_list structures, a field was placed at the start of
payload that may have variable content. The field was given an arbitrary
type (uint32_t). The code then uses the field name to derive an address,
which it used in things such as memset and memcpy. The memset sizes or
memcpy lengths were larger than the arbitrary type, thus coverity reported
an error.
Fix by replacing the arbitrary fields with the real field structures
describing the payload.
Link: https://lore.kernel.org/r/20200128002312.16346-8-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The following error is see from the compiler:
drivers/scsi/lpfc/lpfc_init.c: In function
‘lpfc_cpuhp_get_eq’: drivers/scsi/lpfc/lpfc_init.c:12660:1:
error: the frame size of 1032 bytes is larger than 1024 bytes
[-Werror=frame-larger-than=]
The issue is due to allocating a cpumask on the stack.
Fix by converting to a dynamical allocation of the cpu mask.
Link: https://lore.kernel.org/r/20200128002312.16346-7-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When performing reset testing, the eq's list for related hwqs was getting
corrupted. In cases where there is not a 1:1 eq to hwq, the eq is
shared. The eq maintains a list of hwqs utilizing it in case of cpu
offlining and polling. During the reset, the hwqs are being torn down so
they can be recreated. The recreation was getting confused by seeing a
non-null eq assignment on the eq and the eq list became corrupt.
Correct by clearing the hdwq eq assignment when the hwq is cleaned up.
Link: https://lore.kernel.org/r/20200128002312.16346-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Adjust FC4 Types in FDMI settings
The driver sets FDMI information registring ELS as a FC4 type. ELS is a
fc3 type and should not be registered.
Fix by removing ELS type bit when we register for FDMI Port attributes.
Link: https://lore.kernel.org/r/20200128002312.16346-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When driver is set to enable bb credit recovery, the switch displayed the
setting as inactive. If the link bounces, it switches to Active.
During link up processing, the driver currently does a MBX_READ_SPARAM
followed by a MBX_CONFIG_LINK. These mbox commands are queued to be
executed, one at a time and the completion is processed by the worker
thread. Since the MBX_READ_SPARAM is done BEFORE the MBX_CONFIG_LINK, the
BB_SC_N bit is never set the the returned values. BB Credit recovery status
only gets set after the driver requests the feature in CONFIG_LINK, which
is done after the link up. Thus the ordering of READ_SPARAM needs to follow
the CONFIG_LINK.
Fix by reordering so that READ_SPARAM is done after CONFIG_LINK. Added a
HBA_DEFER_FLOGI flag so that any FLOGI handling waits until after the
READ_SPARAM is done so that the proper BB credit value is set in the FLOGI
payload.
Fixes: 6bfb162082 ("scsi: lpfc: Fix configuration of BB credit recovery in service parameters")
Cc: <stable@vger.kernel.org> # v5.4+
Link: https://lore.kernel.org/r/20200128002312.16346-4-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a call to lpfc_get_cmd_rsp_buf_per_hdwq returns NULL (memory allocation
failure), a previously allocated lpfc_io_buf resource is leaked.
Fix by releasing the lpfc_io_buf resource in the failure path.
Fixes: d79c9e9d4b ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.")
Cc: <stable@vger.kernel.org> # v5.4+
Link: https://lore.kernel.org/r/20200128002312.16346-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver is occasionally seeing the following SLI Port error, requiring
reset and reinit:
Port Status Event: ... error 1=0x52004a01, error 2=0x218
The failure means an RQ timeout. That is, the adapter had received
asynchronous receive frames, ran out of buffer slots to place the frames,
and the driver did not replenish the buffer slots before a timeout
occurred. The driver should not be so slow in replenishing buffers that a
timeout can occur.
When the driver received all the frames of a sequence, it allocates an IOCB
to put the frames in. In a situation where there was no IOCB available for
the frame of a sequence, the RQ buffer corresponding to the first frame of
the sequence was not returned to the FW. Eventually, with enough traffic
encountering the situation, the timeout occurred.
Fix by releasing the buffer back to firmware whenever there is no IOCB for
the first frame.
[mkp: typo]
Link: https://lore.kernel.org/r/20200128002312.16346-2-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix sparse warning:
drivers/scsi/lpfc/lpfc_nportdisc.c:344:1: warning:
symbol 'lpfc_defer_acc_rsp' was not declared. Should it be static?
Link: https://lore.kernel.org/r/20200107014956.41748-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This series concludes the work I did for linux-5.5 on the compat_ioctl()
cleanup, killing off fs/compat_ioctl.c and block/compat_ioctl.c by moving
everything into drivers.
Overall this would be a reduction both in complexity and line count, but
as I'm also adding documentation the overall number of lines increases
in the end.
My plan was originally to keep the SCSI and block parts separate.
This did not work easily because of interdependencies: I cannot
do the final SCSI cleanup in a good way without first addressing the
CDROM ioctls, so this is one series that I hope could be merged through
either the block or the scsi git trees, or possibly both if you can
pull in the same branch.
The series comes in these steps:
1. clean up the sg v3 interface as suggested by Linus. I have
talked about this with Doug Gilbert as well, and he would
rebase his sg v4 patches on top of "compat: scsi: sg: fix v3
compat read/write interface"
2. Actually moving handlers out of block/compat_ioctl.c and
block/scsi_ioctl.c into drivers, mixed in with cleanup
patches
3. Document how to do this right. I keep getting asked about this,
and it helps to point to some documentation file.
The branch is based on another one that fixes a couple of bugs found
during the creation of this series.
Changes since v3:
https://lore.kernel.org/lkml/20200102145552.1853992-1-arnd@arndb.de/
- Move sr_compat_ioctl fixup to correct patch (Ben Hutchings)
- Add Reviewed-by tags
Changes since v2:
https://lore.kernel.org/lkml/20191217221708.3730997-1-arnd@arndb.de/
- Rebase to v5.5-rc4, which contains the earlier bugfixes
- Fix sr_block_compat_ioctl() error handling bug found by
Ben Hutchings
- Fix idecd_locked_compat_ioctl() compat_ptr() bug
- Don't try to handle HDIO_DRIVE_TASKFILE in drivers/ide
- More documentation improvements
Changes since v1:
https://lore.kernel.org/lkml/20191211204306.1207817-1-arnd@arndb.de/
- move out the bugfixes into a branch for itself
- clean up scsi sg driver further as suggested by Christoph Hellwig
- avoid some ifdefs by moving compat_ptr() out of asm/compat.h
- split out the blkdev_compat_ptr_ioctl function; bug spotted by
Ben Hutchings
- Improve formatting of documentation
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Merge tag 'block-ioctl-cleanup-5.6' into 5.6/scsi-queue
Pull compat_ioctl cleanup from Arnd. Here's his description:
This series concludes the work I did for linux-5.5 on the compat_ioctl()
cleanup, killing off fs/compat_ioctl.c and block/compat_ioctl.c by moving
everything into drivers.
Overall this would be a reduction both in complexity and line count, but
as I'm also adding documentation the overall number of lines increases
in the end.
My plan was originally to keep the SCSI and block parts separate.
This did not work easily because of interdependencies: I cannot
do the final SCSI cleanup in a good way without first addressing the
CDROM ioctls, so this is one series that I hope could be merged through
either the block or the scsi git trees, or possibly both if you can
pull in the same branch.
The series comes in these steps:
1. clean up the sg v3 interface as suggested by Linus. I have
talked about this with Doug Gilbert as well, and he would
rebase his sg v4 patches on top of "compat: scsi: sg: fix v3
compat read/write interface"
2. Actually moving handlers out of block/compat_ioctl.c and
block/scsi_ioctl.c into drivers, mixed in with cleanup
patches
3. Document how to do this right. I keep getting asked about this,
and it helps to point to some documentation file.
The branch is based on another one that fixes a couple of bugs found
during the creation of this series.
Changes since v3:
https://lore.kernel.org/lkml/20200102145552.1853992-1-arnd@arndb.de/
- Move sr_compat_ioctl fixup to correct patch (Ben Hutchings)
- Add Reviewed-by tags
Changes since v2:
https://lore.kernel.org/lkml/20191217221708.3730997-1-arnd@arndb.de/
- Rebase to v5.5-rc4, which contains the earlier bugfixes
- Fix sr_block_compat_ioctl() error handling bug found by
Ben Hutchings
- Fix idecd_locked_compat_ioctl() compat_ptr() bug
- Don't try to handle HDIO_DRIVE_TASKFILE in drivers/ide
- More documentation improvements
Changes since v1:
https://lore.kernel.org/lkml/20191211204306.1207817-1-arnd@arndb.de/
- move out the bugfixes into a branch for itself
- clean up scsi sg driver further as suggested by Christoph Hellwig
- avoid some ifdefs by moving compat_ptr() out of asm/compat.h
- split out the blkdev_compat_ptr_ioctl function; bug spotted by
Ben Hutchings
- Improve formatting of documentation
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Four fixes and one spelling update, all in drivers: 2 in lpfc and the
rest in mp3sas, cxgbi and target.
Signed-off-by: James E.J. Bottomley <jejb@linux.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:
"Four fixes and one spelling update, all in drivers: two in lpfc and
the rest in mp3sas, cxgbi and target"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target/iblock: Fix protection error with blocks greater than 512B
scsi: libcxgbi: fix NULL pointer dereference in cxgbi_device_destroy()
scsi: lpfc: fix spelling mistakes of asynchronous
scsi: lpfc: fix build failure with DEBUGFS disabled
scsi: mpt3sas: Fix double free in attach error handling
Current driver code looks at iocb types and uses a "==" comparison on the
flags to determine type. If another flag were set, it would disrupt the
comparison.
Fix by converting to a bitwise & operation.
Link: https://lore.kernel.org/r/20191218235808.31922-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When running Cisco-MDS diagnostics which perform driver-level frame loop
back, the switch is reporting errors. Diagnostic has a limit on latency
that is not being met by the driver.
The requirement of Latency frames is that they should be responded back by
the host with a maximum delay of few hundreds of microseconds. If the
switch doesn't get response frames within this time frame, it fails the
test.
Test is failing as the lpfc-wq workqueue was overwhelmed by the packet rate
and in some cases, the work element yielded to other kernel elements.
To resolve, reduce the outstanding load allowed by the adapter. This
ensures the driver spends a reasonable amount of time doing loopback and
can do so such that latency values can be met. Load is managed by reducing
the number of receive buffers posted such that the link can be
backpressured to reduce load.
Link: https://lore.kernel.org/r/20191218235808.31922-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When unattaching, the driver did not unmap the DPP bar. This caused the
next load of the driver, which attempts to enable wc, to not work correctly
and wc to be disabled due to an address mapping overlap.
Fix by unmapping on unattach.
Link: https://lore.kernel.org/r/20191218235808.31922-8-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The order of the flags/checks for adapters where FC-AL is supported
erroneously excluded lpe35000 adapter models. Also noted that the G7 flags
for Loop and Persistent topology are incorrect. They should follow the
rules as G6.
Rework the logic to enable LPe35000 FC-AL support. Collapse G7 support
logic to the same rules as G6.
Link: https://lore.kernel.org/r/20191218235808.31922-7-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
/sys/kernel/debug/lpfc/fn0/ras_log always shows the same ras_log even if
there are link bounce events triggered via issue_lip
Dynamic FW logging had logic that prematurely breaks from the buffer
filling loop.
Fix the check for buffer overrun by looking before copying and restricting
copy length to the remaining buffer. When copying, ensure space for NULL
character is left in the buffer. While in the routine - ensure the buffer
is cleared before adding elements.
Link: https://lore.kernel.org/r/20191218235808.31922-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There are reports of multiple ports on the same system displaying different
hostnames in fabric FDMI displays.
Currently, the driver registers the hostname at initialization and obtains
the hostname via init_utsname()->nodename queried at the time the FC link
comes up. Unfortunately, if the machine hostname is updated after
initialization, such as via DHCP or admin command, the value registered
initially will be incorrect.
Fix by having the driver save the hostname that was registered with FDMI.
The driver then runs a heartbeat action that will check the hostname. If
the name changes, reregister the FMDI data.
The hostname is used in RSNN_NN, FDMI RPA and FDMI RHBA.
Link: https://lore.kernel.org/r/20191218235808.31922-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When the WriteObject mailbox response has change_status set to is 0x2
(Firmware Reset) or 0x04 (Port Migration Reset), the CSF field should also
be checked to see if a fw reset is sufficient to enable all new features in
the updated firmware image. If not, a fw reset would start the new
firmware, but with a feature level equal to existing firmware. To enable
the new features, a chip reset/pci slot reset would be required.
Check the CSF bit when change_status is 0x2 or 0x4 to know whether to
perform a pci bus reset or fw reset.
Link: https://lore.kernel.org/r/20191218235808.31922-4-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch reworks the fdmi symbolic node name data for the following two
issues:
- Correcting extraneous periods following the DV and HN fdmi data fields.
- Avoiding buffer overflow issues when formatting the data.
The fix to the fist issue is to just remove the characters.
The fix to the second issue has all data being staged in temporary storage
before being moved to the real buffer.
Link: https://lore.kernel.org/r/20191218235808.31922-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
NVMe device re-discovery does not complete. Dev_loss_tmo messages seen on
initiator after recovery from a link disturbance.
The failing case is the following:
When the driver (as a NVME target) receives a PLOGI, the driver initiates
an "unreg rpi" mailbox command. While the mailbox command is in progress,
the driver requests that an ACC be sent to the initiator. The target's ACC
is received by the initiator and the initiator then transmits a PLOGI. The
driver receives the PLOGI prior to receiving the completion for the PLOGI
response WQE that sent the ACC. (Different delivery sources from the hw so
the race is very possible). Given the PLOGI is prior to the ACC completion
(signifying PLOGI exchange complete), the driver LS_RJT's the PRLI. The
"unreg rpi" mailbox then completes. Since PRLI has been received, the
driver transmits a PLOGI to restart discovery, which the initiator then
ACC's. If the driver processes the (re)PLOGI ACC prior to the completing
the handling for the earlier ACC it sent the intiators original PLOGI,
there is no state change for completion of the (re)PLOGI. The ndlp remains
in "PLOGI Sent" and the initiator continues sending PRLI's which are
rejected by the target until timeout or retry is reached.
Fix by: When in target mode, defer sending an ACC for the received PLOGI
until unreg RPI completes.
Link: https://lore.kernel.org/r/20191218235808.31922-2-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There are spelling mistakes of asynchronous in a lpfc_printf_log message
and comments. Fix these.
Link: https://lore.kernel.org/r/20191218084301.627555-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A recent change appears to have moved an #endif by accident:
drivers/scsi/lpfc/lpfc_debugfs.c:5393:18: error: 'lpfc_debugfs_dumpHBASlim_open' undeclared here (not in a function); did you mean 'lpfc_debugfs_op_dumpHBASlim'?
drivers/scsi/lpfc/lpfc_debugfs.c:5394:18: error: 'lpfc_debugfs_lseek' undeclared here (not in a function); did you mean 'lpfc_debugfs_nvme_trc'?
drivers/scsi/lpfc/lpfc_debugfs.c:5395:18: error: 'lpfc_debugfs_read' undeclared here (not in a function); did you mean 'lpfc_debug_dump_q'?
drivers/scsi/lpfc/lpfc_debugfs.c:5396:18: error: 'lpfc_debugfs_release' undeclared here (not in a function); did you mean 'lpfc_debugfs_terminate'?
drivers/scsi/lpfc/lpfc_debugfs.c:5402:18: error: 'lpfc_debugfs_dumpHostSlim_open' undeclared here (not in a function); did you mean 'lpfc_debugfs_op_dumpHostSlim'?
Move it back to where it was previously.
Fixes: 95bfc6d8ad ("scsi: lpfc: Make FW logging dynamically configurable")
Link: https://lore.kernel.org/r/20191216131701.3125077-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
24 fixes, all in drivers. The lion's share (16) are qla2xxx and the
rest are iscsi (3), ufs (2), smarpqi, lpfc and libsas.
Signed-off-by: James E.J. Bottomley <jejb@linux.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:
"24 fixes, all in drivers. The lion's share (16) are qla2xxx and the
rest are iscsi (3), ufs (2), smarpqi, lpfc and libsas"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
scsi: iscsi: Avoid potential deadlock in iscsi_if_rx func
scsi: iscsi: Fix a potential deadlock in the timeout handler
scsi: smartpqi: Update attribute name to `driver_version`
scsi: libsas: stop discovering if oob mode is disconnected
scsi: ufs: Disable autohibern8 feature in Cadence UFS
scsi: iscsi: qla4xxx: fix double free in probe
scsi: ufs: Give an unique ID to each ufs-bsg
scsi: qla2xxx: Add debug dump of LOGO payload and ELS IOCB
scsi: qla2xxx: Ignore PORT UPDATE after N2N PLOGI
scsi: qla2xxx: Don't defer relogin unconditonally
scsi: qla2xxx: Send Notify ACK after N2N PLOGI
scsi: qla2xxx: Configure local loop for N2N target
scsi: qla2xxx: Fix PLOGI payload and ELS IOCB dump length
scsi: qla2xxx: Don't call qlt_async_event twice
scsi: qla2xxx: Allow PLOGI in target mode
scsi: qla2xxx: Change discovery state before PLOGI
scsi: qla2xxx: Drop superfluous INIT_WORK of del_work
scsi: qla2xxx: Initialize free_work before flushing it
scsi: qla2xxx: Use explicit LOGO in target mode
scsi: qla2xxx: Ignore NULL pointer in tcm_qla2xxx_free_mcmd
...
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Merge tag 'for-linus-20191212' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- stable fix for the bi_size overflow. Not a corruption issue, but a
case wher we could merge but disallowed (Andreas)
- NVMe pull request via Keith, with various fixes.
- MD pull request from Song.
- Merge window regression fix for the rq passthrough stats (Logan)
- Remove unused blkcg_drain_queue() function (Guoqing)
* tag 'for-linus-20191212' of git://git.kernel.dk/linux-block:
blk-cgroup: remove blkcg_drain_queue
block: fix NULL pointer dereference in account statistics with IDE
md: make sure desc_nr less than MD_SB_DISKS
md: raid1: check rdev before reference in raid1_sync_request func
raid5: need to set STRIPE_HANDLE for batch head
block: fix "check bi_size overflow before merge"
nvme/pci: Fix read queue count
nvme/pci Limit write queue sizes to possible cpus
nvme/pci: Fix write and poll queue types
nvme/pci: Remove last_cq_head
nvme: Namepace identification descriptor list is optional
nvme-fc: fix double-free scenarios on hw queues
nvme: else following return is not needed
nvme: add error message on mismatching controller ids
nvme_fc: add module to ops template to allow module references
nvmet-loop: Avoid preallocating big SGL for data
nvme-fc: Avoid preallocating big SGL for data
nvme-rdma: Avoid preallocating big SGL for data
When phba->mbox_ext_buf_ctx.seqNum != phba->mbox_ext_buf_ctx.numBuf,
dd_data should be freed before return SLI_CONFIG_HANDLED.
When lpfc_sli_issue_mbox func return fails, pmboxq should be also freed in
job_error tag.
Link: https://lore.kernel.org/r/EDBAAA0BBBA2AC4E9C8B6B81DEEE1D6915E7A966@DGGEML525-MBS.china.huawei.com
Signed-off-by: Bo Wu <wubo40@huawei.com>
Reviewed-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
11 patches, all in drivers (no core changes) that are either minor
cleanups or small fixes. They were late arriving, but still safe for
-rc1.
Signed-off-by: James E.J. Bottomley <jejb@linux.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:
"Eleven patches, all in drivers (no core changes) that are either minor
cleanups or small fixes.
They were late arriving, but still safe for -rc1"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: MAINTAINERS: Add the linux-scsi mailing list to the ISCSI entry
scsi: megaraid_sas: Make poll_aen_lock static
scsi: sd_zbc: Improve report zones error printout
scsi: qla2xxx: Fix qla2x00_request_irqs() for MSI
scsi: qla2xxx: unregister ports after GPN_FT failure
scsi: qla2xxx: fix rports not being mark as lost in sync fabric scan
scsi: pm80xx: Remove unused include of linux/version.h
scsi: pm80xx: fix logic to break out of loop when register value is 2 or 3
scsi: scsi_transport_sas: Fix memory leak when removing devices
scsi: lpfc: size cpu map by last cpu id set
scsi: ibmvscsi_tgt: Remove unneeded variable rc
This is mostly update of the usual drivers: aacraid, ufs, zfcp,
NCR5380, lpfc, qla2xxx, smartpqi, hisi_sas, target, mpt3sas, pm80xx
plus a whole load of minor updates and fixes. The two major core
changes are Al Viro's reworking of sg's handling of copy to/from user,
Ming Lei's removal of the host busy counter to avoid contention in the
multiqueue case and Damien Le Moal's fixing of residual tracking
across error handling.
Signed-off-by: James E.J. Bottomley <jejb@linux.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 is mostly update of the usual drivers: aacraid, ufs, zfcp,
NCR5380, lpfc, qla2xxx, smartpqi, hisi_sas, target, mpt3sas, pm80xx
plus a whole load of minor updates and fixes.
The major core changes are Al Viro's reworking of sg's handling of
copy to/from user, Ming Lei's removal of the host busy counter to
avoid contention in the multiqueue case and Damien Le Moal's fixing of
residual tracking across error handling"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (251 commits)
scsi: bnx2fc: timeout calculation invalid for bnx2fc_eh_abort()
scsi: target: core: Fix a pr_debug() argument
scsi: iscsi: Don't send data to unbound connection
scsi: target: iscsi: Wait for all commands to finish before freeing a session
scsi: target: core: Release SPC-2 reservations when closing a session
scsi: target: core: Document target_cmd_size_check()
scsi: bnx2i: fix potential use after free
Revert "scsi: qla2xxx: Fix memory leak when sending I/O fails"
scsi: NCR5380: Add disconnect_mask module parameter
scsi: NCR5380: Unconditionally clear ICR after do_abort()
scsi: NCR5380: Call scsi_set_resid() on command completion
scsi: scsi_debug: num_tgts must be >= 0
scsi: lpfc: use hdwq assigned cpu for allocation
scsi: arcmsr: fix indentation issues
scsi: qla4xxx: fix double free bug
scsi: pm80xx: Modified the logic to collect fatal dump
scsi: pm80xx: Tie the interrupt name to the module instance
scsi: pm80xx: Controller fatal error through sysfs
scsi: pm80xx: Do not request 12G sas speeds
scsi: pm80xx: Cleanup command when a reset times out
...
In nvme-fc: it's possible to have connected active controllers
and as no references are taken on the LLDD, the LLDD can be
unloaded. The controller would enter a reconnect state and as
long as the LLDD resumed within the reconnect timeout, the
controller would resume. But if a namespace on the controller
is the root device, allowing the driver to unload can be problematic.
To reload the driver, it may require new io to the boot device,
and as it's no longer connected we get into a catch-22 that
eventually fails, and the system locks up.
Fix this issue by taking a module reference for every connected
controller (which is what the core layer did to the transport
module). Reference is cleared when the controller is removed.
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Currently the lpfc driver sizes its cpu_map array based on
num_possible_cpus(). However, that can be a value that is less than the
highest cpu id bit that is set. As such, if a thread runs on a cpu with a
larger cpu id, or for_each_possible_cpu() is used, the driver could index
off the end of the array and return garbage or GPF.
The driver maintains its own internal copy of the "num_possible" cpu value
and sizes arrays by it.
Fix by setting the driver's value to the value of the last cpu id bit set
in the possible_mask - plus 1. Thus cpu_map will be sized to allow access
by any cpu id possible.
Link: https://lore.kernel.org/r/20191121175556.18953-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Looking at the recent conversion from smp_processor_id() to
raw_smp_processor_id(), realized that the allocation should be based on the
cpu the hdwq is bound to, not the executing cpu.
Revise to pull cpu number from the hdwq
Fixes: 765ab6cdac ("scsi: lpfc: Fix a kernel warning triggered by lpfc_get_sgl_per_hdwq()")
Link: https://lore.kernel.org/r/20191116003847.6141-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update lpfc version to 12.6.0.2
Link: https://lore.kernel.org/r/20191111230401.12958-7-jsmart2021@gmail.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Driver is setting the initiator nvme template with a max hw queues value of
the present cpu count which is odd. It should be registering the number of
hdwq queues (queues created on the adapter).
Change to set nvme tempate, in all cases, to the number of hardware queues.
Link: https://lore.kernel.org/r/20191111230401.12958-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, cpu_map[cpu#]->hdwq is left to equal LPFC_VECTOR_MAP_EMPTY for
not present CPUs. If a CPU is dynamically hot-added, it is possible we may
crash due to not assigning an allocated hdwq.
Correct by assigning a hdwq at initialization for all not-present CPUs.
Fixes: dcaa213679 ("scsi: lpfc: Change default IRQ model on AMD architectures")
Link: https://lore.kernel.org/r/20191111230401.12958-5-jsmart2021@gmail.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Compilation can fail due to having an inline function reference where the
function body is not present.
Fix by removing the inline tag.
Fixes: 93a4d6f401 ("scsi: lpfc: Add registration for CPU Offline/Online events")
Link: https://lore.kernel.org/r/20191111230401.12958-4-jsmart2021@gmail.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Coverity reported the following:
*** CID 101747: Null pointer dereferences (FORWARD_NULL)
/drivers/scsi/lpfc/lpfc_els.c: 4439 in lpfc_cmpl_els_rsp()
4433 kfree(mp);
4434 }
4435 mempool_free(mbox, phba->mbox_mem_pool);
4436 }
4437 out:
4438 if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
vvv CID 101747: Null pointer dereferences (FORWARD_NULL)
vvv Dereferencing null pointer "shost".
4439 spin_lock_irq(shost->host_lock);
4440 ndlp->nlp_flag &= ~(NLP_ACC_REGLOGIN | NLP_RM_DFLT_RPI);
4441 spin_unlock_irq(shost->host_lock);
4442
4443 /* If the node is not being used by another discovery thread,
4444 * and we are sending a reject, we are done with it.
Fix by adding a check for non-null shost in line 4438.
The scenario when shost is set to null is when ndlp is null.
As such, the ndlp check present was sufficient. But better safe
than sorry so add the shost check.
Reported-by: coverity-bot <keescook+coverity-bot@chromium.org>
Addresses-Coverity-ID: 101747 ("Null pointer dereferences")
Fixes: 2e0fef85e0 ("[SCSI] lpfc: NPIV: split ports")
CC: James Bottomley <James.Bottomley@SteelEye.com>
CC: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
CC: linux-next@vger.kernel.org
Link: https://lore.kernel.org/r/20191111230401.12958-3-jsmart2021@gmail.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the following kernel warning:
cpumask_of_node(-1): (unsigned)node >= nr_node_ids(1)
Fixes: dcaa213679 ("scsi: lpfc: Change default IRQ model on AMD architectures")
Link: https://lore.kernel.org/r/20191108225947.1395-1-jsmart2021@gmail.com
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix the following kernel bug report:
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-udevd/954
Fixes: d79c9e9d4b ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.")
Link: https://lore.kernel.org/r/20191107052158.25788-2-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update lpfc version to 12.6.0.1
Link: https://lore.kernel.org/r/20191105005708.7399-12-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Some adapters support the ability to hold multiple adapter dumps on the
adapter flash. Some adapters default to enabling this feature while others
default to single-dump.
Make support uniform by enabling dual dump by default.
Link: https://lore.kernel.org/r/20191105005708.7399-11-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The current driver attempts to allocate an interrupt vector per cpu using
the systems managed IRQ allocator (flag PCI_IRQ_AFFINITY). The system IRQ
allocator will either provide the per-cpu vector, or return fewer
vectors. When fewer vectors, they are evenly spread between the numa nodes
on the system. When run on an AMD architecture, if interrupts occur to a
cpu that is not in the same numa node as the adapter generating the
interrupt, there are extreme costs and overheads in performance. Thus, if
1:1 vector allocation is used, or the "balanced" vectors in the other numa
nodes, performance can be hit significantly.
A much more performant model is to allocate interrupts only on the cpus
that are in the numa node where the adapter resides. I/O completion is
still performed by the cpu where the I/O was generated. Unfortunately,
there is no flag to request the managed IRQ subsystem allocate vectors only
for the CPUs in the numa node as the adapter.
On AMD architecture, revert the irq allocation to the normal style
(non-managed) and then use irq_set_affinity_hint() to set the cpu
affinity and disable user-space rebalancing.
Tie the support into CPU offline/online. If the cpu being offlined owns a
vector, the vector is re-affinitized to one of the other CPUs on the same
numa node. If there are no more CPUs on the numa node, the vector has all
affinity removed and lets the system determine where it's serviced.
Similarly, when the cpu that owned a vector comes online, the vector is
reaffinitized to the cpu.
Link: https://lore.kernel.org/r/20191105005708.7399-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The recent affinitization didn't address cpu offlining/onlining. If an
interrupt vector is shared and the low order cpu owning the vector is
offlined, as interrupts are managed, the vector is taken offline. This
causes the other CPUs sharing the vector will hang as they can't get io
completions.
Correct by registering callbacks with the system for Offline/Online
events. When a cpu is taken offline, its eq, which is tied to an interrupt
vector is found. If the cpu is the "owner" of the vector and if the
eq/vector is shared by other CPUs, the eq is placed into a polled mode.
Additionally, code paths that perform io submission on the "sharing CPUs"
will check the eq state and poll for completion after submission of new io
to a wq that uses the eq.
Similarly, when a cpu comes back online and owns an offlined vector, the eq
is taken out of polled mode and rearmed to start driving interrupts for eq.
Link: https://lore.kernel.org/r/20191105005708.7399-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Current message on FAWWN events is rather cryptic.
Expand the message to clarify its meaning.
Link: https://lore.kernel.org/r/20191105005708.7399-8-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Prior to the last FC-NVME-2 draft, SLER and CONF were independent. SLER
now requires CONF to be set.
Revise the NVME PRLI checking to look for both inorder to enable SLER.
Link: https://lore.kernel.org/r/20191105005708.7399-7-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The recently posted patch had a typo that incorrectly tested the receiving
function.
Fix the typo (change == to !=)
Fixes: 95bfc6d8ad ("scsi: lpfc: Make FW logging dynamically configurable")
Link: https://lore.kernel.org/r/20191105005708.7399-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
During heavy RCN activity and log_verbose = 0 we see these messages:
2754 PRLI failure DID:521245 Status:x9/xb2c00, data: x0
0231 RSCN timeout Data: x0 x3
0230 Unexpected timeout, hba link state x5
This is due to delayed RSCN activity.
Correct by avoiding the timeout thus the messages by restarting the
discovery timeout whenever an rscn is received.
Filter PRLI responses such that severity depends on whether expected for
the configuration or not. For example, PRLI errors on a fabric will be
informational (they are expected), but Point-to-Point errors are not
necessarily expected so they are raised to an error level.
Link: https://lore.kernel.org/r/20191105005708.7399-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When reading sysfs nvme_info file while a remote port leaves and comes
back, a NULL pointer is encountered. The issue is due to ndlp list
corruption as the the nvme_info_show does not use the same lock as the rest
of the code.
Correct by removing the rcu_xxx_lock calls and replace by the host_lock and
phba->hbaLock spinlocks that are used by the rest of the driver. Given
we're called from sysfs, we are safe to use _irq rather than _irqsave.
Link: https://lore.kernel.org/r/20191105005708.7399-4-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver today is reading service parameters from the firmware and then
overwriting the firmware-provided values with values of its own. There are
some switch features that require preliminary FLOGI's that are
switch-specific and done prior to the actual fabric FLOGI for traffic. The
fw will perform those FLOGIs and will revise the service parameters for the
features configured. As the driver later overwrites those values with its
own values, it misconfigures things like BBSCN use by doing so.
Correct by eliminating the driver-overwrite of firmware values. The driver
correctly re-reads the service parameters after each link up to obtain the
latest values from firmware.
Link: https://lore.kernel.org/r/20191105005708.7399-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If the driver receives a login that is later then LOGO'd by the remote port
(aka ndlp), the driver, upon the completion of the LOGO ACC transmission,
will logout the node and unregister the rpi that is being used for the
node. As part of the unreg, the node's rpi value is replaced by the
LPFC_RPI_ALLOC_ERROR value. If the port is subsequently offlined, the
offline walks the nodes and ensures they are logged out, which possibly
entails unreg'ing their rpi values. This path does not validate the node's
rpi value, thus doesn't detect that it has been unreg'd already. The
replaced rpi value is then used when accessing the rpi bitmask array which
tracks active rpi values. As the LPFC_RPI_ALLOC_ERROR value is not a valid
index for the bitmask, it may fault the system.
Revise the rpi release code to detect when the rpi value is the replaced
RPI_ALLOC_ERROR value and ignore further release steps.
Link: https://lore.kernel.org/r/20191105005708.7399-2-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Nine changes, eight in drivers [ufs, target, lpfc x 2, qla2xxx x 4]
and one core change in sd that fixes an I/O failure on DIF type 3
devices.
Signed-off-by: James E.J. Bottomley <jejb@linux.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:
"Nine changes, eight in drivers [ufs, target, lpfc x 2, qla2xxx x 4]
and one core change in sd that fixes an I/O failure on DIF type 3
devices"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: qla2xxx: stop timer in shutdown path
scsi: sd: define variable dif as unsigned int instead of bool
scsi: target: cxgbit: Fix cxgbit_fw4_ack()
scsi: qla2xxx: Fix partial flash write of MBI
scsi: qla2xxx: Initialized mailbox to prevent driver load failure
scsi: lpfc: Honor module parameter lpfc_use_adisc
scsi: ufs-bsg: Wake the device before sending raw upiu commands
scsi: lpfc: Check queue pointer before use
scsi: qla2xxx: fixup incorrect usage of host_byte
Fix sparse warning:
drivers/scsi/lpfc/lpfc_debugfs.c:2083:1: warning:
symbol 'lpfc_debugfs_ras_log_data' was not declared. Should it be static?
Link: https://lore.kernel.org/r/20191028132556.16272-1-yuehaibing@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
mempool_destroy has taken null pointer check into account. Remove the
redundant check.
Link: https://lore.kernel.org/r/20191026194712.GA22249@saurav
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
convert MAGIC_NUMER_xxx to MAGIC_NUMBER_xxx
Link: https://lore.kernel.org/r/20191025184342.6623-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
lpfc_debufs.c was missing include of vmalloc.h when compiled on PPC.
Add missing header.
Link: https://lore.kernel.org/r/20191025182530.26653-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Nine changes, eight to drivers (qla2xxx, hpsa, lpfc, alua, ch,
53c710[x2], target) and one core change that tries to close a race
between sysfs delete and module removal.
Signed-off-by: James E.J. Bottomley <jejb@linux.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:
"Nine changes, eight to drivers (qla2xxx, hpsa, lpfc, alua, ch,
53c710[x2], target) and one core change that tries to close a race
between sysfs delete and module removal"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: remove left-over BUILD_NVME defines
scsi: core: try to get module before removing device
scsi: hpsa: add missing hunks in reset-patch
scsi: target: core: Do not overwrite CDB byte 1
scsi: ch: Make it possible to open a ch device multiple times again
scsi: fix kconfig dependency warning related to 53C700_LE_ON_BE
scsi: sni_53c710: fix compilation error
scsi: scsi_dh_alua: handle RTPG sense code correctly during state transitions
scsi: qla2xxx: fix a potential NULL pointer dereference
Replace assignment of 0 to pointer with NULL assignment.
Link: https://lore.kernel.org/r/20191024030857.GA12097@saurav
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Replace assignment of 0 to pointer with NULL assignment.
Link: https://lore.kernel.org/r/20191024025726.GA31421@saurav
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update lpfc version to 12.6.0.0
Link: https://lore.kernel.org/r/20191018211832.7917-17-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When debugging a recent discovery customer problem it was very hard to tell
what was happening with the existing discovery log messages. To fully debug
the issue additional log messages were necessary.
Add or extend log messages so that sufficient information is present for
debugging.
Link: https://lore.kernel.org/r/20191018211832.7917-16-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In the past, the lpe32000 models, based their main support being for 32G,
and as FC-AL is not supported in the FC standards past 8G, did not support
FC-AL operation.
This patch adds private-loop FC-AL support for the LPE32000 adapters
when a link is 8G or below. To avoid conditions where link rate may
change, which would cause non-connectivity to the AL device, FC-AL
mode must become a persistent setting and the link kept at a speed
supporting FC-AL.
The patch:
- Adds a pls attribute indicating whether the adapter properly supports
FC-AL.
- Adds support for the adapter to indicate that topology should be fixed
and the topology types to be configured.
- Adds a pt attribute to report the persistent topology if present.
Link: https://lore.kernel.org/r/20191018211832.7917-15-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add decode support for adapter Async Events which report FA-WWN
configuration errors.
Link: https://lore.kernel.org/r/20191018211832.7917-14-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add two new macros to aid in message logging:
Both macros print a message if the corresponding lpfc verbosity setting is
set or the kernel log level is WARNING or more critical.
One macro is for use with a phba structure, the other with a vport
structure.
[mkp: typo]
Link: https://lore.kernel.org/r/20191018211832.7917-13-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, the FW logging facility is a load/boot time parameter which
requires the driver to be unloaded/reloaded or the system rebooted in order
to change its configuration.
Convert the logging facility to allow dynamic enablement and configuration.
Specifically:
- Convert the feature so that it can be enabled dynamically via an
attribute. Additionally, the size of the buffer can be configured
dynamically.
- Add locks around states that now may be changing.
- Tie the feature into debugfs so that the logs can be read at any time.
Link: https://lore.kernel.org/r/20191018211832.7917-12-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The existing "auto eq delay" mechanism was sometimes skipping over an EQ,
not ramping the coalescing down under light load fast enough, and in other
cases never kicked in as cpu sharing by multiple vectors didn't quite add
up right.
Tweak the interrupt mechanism such that:
- Add a flag to the EQ to force checking for colaescing values when being
serviced in the interrupt handler. The flag will be set by any CQ bound
to the EQ whenever the number of CQ elements process in a single scan
meets or exceeds the hardware queue notify level. E.g. there's a
significant number of completions happening.
- In the heartbeat work item that checks coalescing:
- Replace the structure that was counting the number of EQs that
interrupted on a single cpu with a new structure that looks at the EQ
to see whether EQ currently has a coalescing value (thus it should be
re-evaluate) or was marked by the new flag indicating heavy
completions.
- When a cpu, which may be servicing multiple vectors, had at least 1 EQ
that should be checked, a new coalescing delay is calculated based on
the number of interrupts that occurred on the cpu.
- The new coalescing value is then applied to the EQs that had
interrupted on the cpu.
Link: https://lore.kernel.org/r/20191018211832.7917-11-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Lower IOps performance with write operations. Perf tool shows lock
contention in dma_pool_alloc and dma_pool_free related to the
txrdy_payload_pool.
The allocations are for dma buffers for XFER_RDY's, which actually are not
needed for the FCP_TRECEIVE command as the command contents are used by the
adapter to generate the IU.
Remove the allocations and the associated buffer pool. Rather than leaving
NULLs in buffer pointer locations, set command and sgl to indicate skipped
SGLE indexes.
Link: https://lore.kernel.org/r/20191018211832.7917-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Slightly rework some error check code paths for better streamlining.
Added compiler unlikely hints to allow slightly better optimization of the
fast-path.
Removed a few pointer checks that were obviously already valid.
Link: https://lore.kernel.org/r/20191018211832.7917-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Log message conditional upon vport being NULL dereferences vport to
determine log verbose setting.
Changed to use lpfc_print_log which uses phba to determine the active log
verbose setting.
Fixes: 43bfea1bff ("scsi: lpfc: Fix coverity errors on NULL pointer checks")
Link: https://lore.kernel.org/r/20191018211832.7917-8-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In lpfc_abort_handler, the lock acquire order is hbalock (irqsave),
buf_lock (irq) and ring_lock (irq). The issue is that in two places the
locks are released out of order - the buf_lock and the hbalock - resulting
in the cpu preemption/lock flags getting restored out of order and
deadlocking the cpu.
Fix the unlock order by fully releasing the hbalocks as well.
CC: Zhangguanghui <zhang.guanghui@h3c.com>
Link: https://lore.kernel.org/r/20191018211832.7917-7-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In cases where I/O may be aborted, such as driver unload or link bounces,
the system will crash based on a bad ndlp pointer.
Example:
RIP: 0010:lpfc_sli4_abts_err_handler+0x15/0x140 [lpfc]
...
lpfc_sli4_io_xri_aborted+0x20d/0x270 [lpfc]
lpfc_sli4_sp_handle_abort_xri_wcqe.isra.54+0x84/0x170 [lpfc]
lpfc_sli4_fp_handle_cqe+0xc2/0x480 [lpfc]
__lpfc_sli4_process_cq+0xc6/0x230 [lpfc]
__lpfc_sli4_hba_process_cq+0x29/0xc0 [lpfc]
process_one_work+0x14c/0x390
Crash was caused by a bad ndlp address passed to I/O indicated by the XRI
aborted CQE. The address was not NULL so the routine deferenced the ndlp
ptr. The bad ndlp also caused the lpfc_sli4_io_xri_aborted to call an
erroneous io handler. Root cause for the bad ndlp was an lpfc_ncmd that
was aborted, put on the abort_io list, completed, taken off the abort_io
list, sent to lpfc_release_nvme_buf where it was put back on the abort_io
list because the lpfc_ncmd->flags setting LPFC_SBUF_XBUSY was not cleared
on the final completion.
Rework the exchange busy handling to ensure the flags are properly set for
both scsi and nvme.
Fixes: c490850a09 ("scsi: lpfc: Adapt partitioned XRI lists to efficient sharing")
Cc: <stable@vger.kernel.org> # v5.1+
Link: https://lore.kernel.org/r/20191018211832.7917-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When operating in private loop mode, PLOGI exchanges are racing and the
driver tries to abort it's PLOGI. But the PLOGI abort ends up terminating
the login with the other end causing the other end to abort its PLOGI as
well. Discovery never fully completes.
Fix by disabling the PLOGI abort when private loop and letting the state
machine play out.
Link: https://lore.kernel.org/r/20191018211832.7917-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix lockdep error in __lpfc_sli_ringtx_put(): The hbalock is valid for
sli3, but not for sli4. Change lockdep to look at ring lock if sli4.
Also update comment in __lpfc_sli_issue_iocb_s4() to reflect proper
lock. Note: lockdep check is already correct.
Link: https://lore.kernel.org/r/20191018211832.7917-4-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When the adapter FW is administratively set to RO mode, a FW update
triggered by the driver's sysfs attribute will fail. Currently, the
driver's logging mechanism does not properly parse the adapter return codes
and print a meaningful message. This oversight prevents quick diagnosis in
the field.
Parse the adapter return codes for Write_Object and write an appropriate
message to the system console.
[mkp: typo]
Link: https://lore.kernel.org/r/20191018211832.7917-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, lpfc_nvmet_mrq is always scaled back to the min(lpfc_nvmet_mrq,
lpfc_irq_chann). There's no reason to reduce it to the number of interrupt
vectors. Rather, it should be scaled down based on the number of hardware
queues for the system (if lower than max of 16).
Change scaling to use hardware queue count rather than interrupt vector
count.
Link: https://lore.kernel.org/r/20191018211832.7917-2-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The initial lpfc_desc_set_adisc implementation in commit
dea3101e0a ("lpfc: add Emulex FC driver version 8.0.28") enabled ADISC if
cfg_use_adisc && RSCN_MODE && FCP_2_DEVICE
In commit 92d7f7b0cd ("[SCSI] lpfc: NPIV: add NPIV support on top of
SLI-3") this changed to
(cfg_use_adisc && RSC_MODE) || FCP_2_DEVICE
and later in commit ffc954936b ("[SCSI] lpfc 8.3.13: FC Discovery Fixes
and enhancements.") to
(cfg_use_adisc && RSC_MODE) || (FCP_2_DEVICE && FCP_TARGET)
A customer reports that after a devloss, an ADISC failure is logged. It
turns out the ADISC flag is set even the user explicitly set lpfc_use_adisc
= 0.
[Sat Dec 22 22:55:58 2018] lpfc 0000:82:00.0: 2:(0):0203 Devloss timeout on WWPN 50:01:43:80:12:8e:40:20 NPort x05df00 Data: x82000000 x8 xa
[Sat Dec 22 23:08:20 2018] lpfc 0000:82:00.0: 2:(0):2755 ADISC failure DID:05DF00 Status:x9/x70000
[mkp: fixed Hannes' email]
Fixes: 92d7f7b0cd ("[SCSI] lpfc: NPIV: add NPIV support on top of SLI-3")
Cc: Dick Kennedy <dick.kennedy@broadcom.com>
Cc: James Smart <james.smart@broadcom.com>
Link: https://lore.kernel.org/r/20191022072112.132268-1-dwagner@suse.de
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The queue pointer might not be valid. The rest of the code checks the
pointer before accessing it. lpfc_sli4_process_missed_mbox_completions is
the only place where the check is missing.
Fixes: 657add4e5e ("scsi: lpfc: Fix poor use of hardware queues if fewer irq vectors")
Cc: James Smart <jsmart2021@gmail.com>
Link: https://lore.kernel.org/r/20191018162111.8798-1-dwagner@suse.de
Signed-off-by: Daniel Wagner <dwagner@suse.de>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The BUILD_NVME define never got defined anywhere, causing NVMe commands to
be treated as SCSI commands when freeing the buffers. This was causing a
stuck discovery and a horrible crash in lpfc_set_rrq_active() later on.
Link: https://lore.kernel.org/r/20191017150019.75769-1-hare@suse.de
Fixes: c00f62e6c5 ("scsi: lpfc: Merge per-protocol WQ/CQ pairs into single per-cpu pair")
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix sparse warnings:
drivers/scsi/lpfc/lpfc_nportdisc.c:290:1: warning: symbol 'lpfc_defer_pt2pt_acc' was not declared. Should it be static?
Link: https://lore.kernel.org/r/1570183477-137273-1-git-send-email-zhengbin13@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Reviewed-by: Dick Kennedy <dick.kennedy@broadcom.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Local variable fcp_txcmplq_cnt is initialized to 0 and then displayed in
lpfc driver message 0387.
Presumed residual (or unused) code from previous commit.
Removed fcp_txcmplq_cnt.
Link: https://lore.kernel.org/r/20190922035906.10977-20-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
T10 PI support on SLI-4-based FCoE adapters is not supported. A prior
commit in the 12.4.0.0 stream added device recognition that would prevent
T10 PI enablement. However, it didn't contain a complete device list. Thus
some SLI-4 FCoE adapters still had T10 PI enabled.
Fix by expanding the device list that identifies FCoE devices.
Link: https://lore.kernel.org/r/20190922035906.10977-19-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch updates ACQE handling for:
- an EEPROM failure error reported by the adapter.
- ensures that all data for any ACQE, recognized or not, is logged.
- Given that all data is now logged unconditionally, the default case
(unrecognized) data can be reduced.
Link: https://lore.kernel.org/r/20190922035906.10977-18-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In lpfc_release_io_buf, an lpfc_io_buf is returned to the 'available' pool
before any associated sgl or cmd and rsp buffers are returned via their
respective 'put' routines. If xri rebalancing occurs and an lpfc_io_buf
structure is reused quickly, there may be a race condition between release
of old and association of new resources.
Re-ordered lpfc_release_io_buf to release sgl and cmd/rsp
buffer lists before releasing the lpfc_io_buf structure for re-use.
Fixes: d79c9e9d4b ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.")
Link: https://lore.kernel.org/r/20190922035906.10977-17-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Many of the sgl-per-hdwq paths are locking with spin_lock_irq() and
spin_unlock_irq() and may unwittingly raising irq when it shouldn't. Hard
deadlocks were seen around lpfc_scsi_prep_cmnd().
Fix by converting the locks to irqsave/irqrestore.
Fixes: d79c9e9d4b ("scsi: lpfc: Support dynamic unbounded SGL lists on G7 hardware.")
Link: https://lore.kernel.org/r/20190922035906.10977-16-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While reviewing the CT behavior, issues with spinlock_irq were seen. The
driver should be using spinlock_irqsave/irqrestore in the els flush
routine.
Changed to spinlock_irqsave/irqrestore.
Link: https://lore.kernel.org/r/20190922035906.10977-15-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After study, it was determined there was a double free of a CT iocb during
execution of lpfc_offline_prep and lpfc_offline. The prep routine issued
an abort for some CT iocbs, but the aborts did not complete fast enough for
a subsequent routine that waits for completion. Thus the driver proceeded
to lpfc_offline, which releases any pending iocbs. Unfortunately, the
completions for the aborts were then received which re-released the ct
iocbs.
Turns out the issue for why the aborts didn't complete fast enough was not
their time on the wire/in the adapter. It was the lpfc_work_done routine,
which requires the adapter state to be UP before it calls
lpfc_sli_handle_slow_ring_event() to process the completions. The issue is
the prep routine takes the link down as part of it's processing.
To fix, the following was performed:
- Prevent the offline routine from releasing iocbs that have had aborts
issued on them. Defer to the abort completions. Also means the driver
fully waits for the completions. Given this change, the recognition of
"driver-generated" status which then releases the iocb is no longer
valid. As such, the change made in the commit 296012285c is reverted.
As recognition of "driver-generated" status is no longer valid, this
patch reverts the changes made in
commit 296012285c ("scsi: lpfc: Fix leak of ELS completions on adapter reset")
- Modify lpfc_work_done to allow slow path completions so that the abort
completions aren't ignored.
- Updated the fdmi path to recognize a CT request that fails due to the
port being unusable. This stops FDMI retries. FDMI will be restarted on
next link up.
Link: https://lore.kernel.org/r/20190922035906.10977-14-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Scenarios were seen where a host hung when the system booted or the host
was very slow in booting. The link would not come up and no luns were
visible to the host.
After investigation, this was found to be due to the introduction of a new
ACQE that adapter may generate to report a adapter hw warning. The ACQE was
delivered to the driver very early in adapter initialization, when the
driver did not expect command completion. As part of handling this
unexpected interrupt the an EQEs are consumed and discarded and the EQ
rearmed. The issue is the CQ that cause the EQE and thus the interrupt was
not processed and the CQ was left unarmed. Meaning it would no longer
generate a new interrupt condition. Subsequent mailbox commands used to
initialize the adapter use the same CQ, and as there was no completion
interrupt generated, the driver never saw the mailbox commands complete and
it would wait long command timeouts.
Fix by having the early flush routine also process the related CQ and rearm
the CQ.
Link: https://lore.kernel.org/r/20190922035906.10977-13-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Coverity flagged several scenarios where checking of null pointer values
wasn't consistent.
Fix the code to that be consistent on checking.
Link: https://lore.kernel.org/r/20190922035906.10977-12-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When the port, running as a nvme target, receives an ABTS, it submits
commands to the adapter to Abort i/o outstanding in the adapter. The Abort
command formatting routine left a command field set to zero, which
instructs the adapter to generate an ABTS on the wire as part of cleaning
up the I/O. This is common operation for an initiator, but not for a
target.
Fix the driver to check whether an ABTS had been received for the I/O, and
if so, change the Abort command formatting so that the ABTS generation is
disabled (IA=1). No need to ABTS it when the other side already has.
Also refactored the code such that there is a single routine being used for
nvme or nvmet ABORT requests, and IA is an argument.
Link: https://lore.kernel.org/r/20190922035906.10977-11-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
An issue was seen discovering all SCSI Luns when a target device undergoes
link bounce.
The driver currently does not qualify the FC4 support on the target.
Therefore it will send a SCSI PRLI and an NVMe PRLI. The expectation is
that the target will reject the PRLI if it is not supported. If a PRLI
times out, the driver will retry. The driver will not proceed with the
device until both SCSI and NVMe PRLIs are resolved. In the failure case,
the device is FCP only and does not respond to the NVMe PRLI, thus
initiating the wait/retry loop in the driver. During that time, a RSCN is
received (device bounced) causing the driver to issue a GID_FT. The GID_FT
response comes back before the PRLI mess is resolved and it prematurely
cancels the PRLI retry logic and leaves the device in a STE_PRLI_ISSUE
state. Discovery with the target never completes or resets.
Fix by resetting the node state back to STE_NPR_NODE when GID_FT completes,
thereby restarting the discovery process for the node.
Link: https://lore.kernel.org/r/20190922035906.10977-10-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Faults are seen with RIP of lpfc_scsi_cmd_iocb_cmpl(). The failure is when
lpfc_update_status is being called as part of the completion. After
debugging, it was seen the issue was the shost pointer that the driver
derived from the scsi cmd. The crash showed the cmd->device pointer being
bogus, which is likely as the scsi devices were offlined prior. The bogus
device pointer caused subsequent pointers derived from the location,
specifically the vport, to be bogus.
Fix by adjusting the calling sequence to pass in the vport rather than
having to derive it from the cmd structure.
Link: https://lore.kernel.org/r/20190922035906.10977-9-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Symptoms were seen of the driver not having valid data for mailbox
commands. After debugging, the following sequence was found:
The driver maintains a port-wide pointer of the mailbox command that is
currently in execution. Once finished, the port-wide pointer is cleared
(done in lpfc_sli4_mq_release()). The next mailbox command issued will set
the next pointer and so on.
The mailbox response data is only copied if there is a valid port-wide
pointer.
In the failing case, it was seen that a new mailbox command was being
attempted in parallel with the completion. The parallel path was seeing
the mailbox no long in use (flag check under lock) and thus set the port
pointer. The completion path had cleared the active flag under lock, but
had not touched the port pointer. The port pointer is cleared after the
lock is released. In this case, the completion path cleared the just-set
value by the parallel path.
Fix by making the calls that clear mbox state/port pointer while under
lock. Also slightly cleaned up the error path.
Link: https://lore.kernel.org/r/20190922035906.10977-8-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When target-side fault injections are made, the driver isn't reconnecting
to the remote port. The driver is logging "2753" error messages which
state:
"PLOGI failure DID:1B2400 Status:x3/xf0240008"
The failures status is indicating a Illegal field error, which points to
the Temporary RPI field being used for the ELS. This error typically means
the driver used an RPI that was already registered (shouldn't be registered
if using it in this context).
Study has found that if the driver were in discovery attempts and
encountered an error, it wouldn't flag the temporary rpi in error. Yet the
rpi was released for reallocation in these error paths and another ELS
could allocate the rpi. In the failure situation a retry was done on an ELS
that had encountered an error, and as the rpi wasn't marked in error, the
ELS reused the rpi it originally allocated. But that rpi had been allocated
by a different ELS issued after the original error and before the retry
attempt. The different ELS had succeeded and the RPI was registered.
Fix by marking the rpi state for the node to be in error, aka as needing
reallocation, upon an error in the els processing. Error state marking is
always done prior to release back to the internal rpi free list, which the
driver wasn't doing in cases prior.
Also enhanced some of the logging to help in the next case of problem
troubleshooting.
Link: https://lore.kernel.org/r/20190922035906.10977-7-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A prior use-after-free mailbox fix solved it's problem by null'ing a ndlp
pointer. However, further testing has shown that this change causes a
later state change to occasionally be skipped, which results in a reference
count never being decremented thus the rpi is never released, which causes
a vport delete to never succeed.
Revise the fix in the prior patch to no longer null the ndlp. Instead the
RELEASE_RPI flag is set which will drive the release of the rpi.
Given the new code was added at a deep indentation level, refactor the code
block using a new routine that avoids the indentation issues.
Fixes: 9b16406864 ("scsi: lpfc: Fix use-after-free mailbox cmd completion")
Link: https://lore.kernel.org/r/20190922035906.10977-6-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The nvme-fc transport may call to abort an io on controller reset. If the
driver is out of resources to issue an abort command, it just gives up and
does nothing. The transport expects the lldd to always be able to terminate
an io it has issued. At that point, the controller hangs waiting for
aborted ios to be returned. Note: flaged by "6136" and "6176" error
messages.
Root issue was the adapter mis-allocated the number resources it allocated
for command entries for the adapter.
Convert the driver to allocate command resources based on the number of
xris supported by the FC port - 1 resource for the original command and 1
resource for the abort request.
Link: https://lore.kernel.org/r/20190922035906.10977-5-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Coverity flagged missing status check on register read that flags a
poisoned data return value.
Add checking of register read status.
Link: https://lore.kernel.org/r/20190922035906.10977-4-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use of spin_lock_irq may re-enable interrupts prematurely.
Convert to spin_lock. Note: code is under the phba->hba_lock which has been
locked with irqsave.
Link: https://lore.kernel.org/r/20190922035906.10977-3-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After exchanging PLOGI on an SLI-3 adapter, the PRLI exchange failed. Link
trace showed the port was assigned a non-zero n_port_id, but didn't use the
address on the PRLI. The assigned address is set on the port by the
CONFIG_LINK mailbox command. The driver responded to the PRLI before the
mailbox command completed. Thus the PRLI response used the old n_port_id.
Defer the PRLI response until CONFIG_LINK completes.
Link: https://lore.kernel.org/r/20190922035906.10977-2-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This is mostly update of the usual drivers: qla2xxx, ufs, smartpqi,
lpfc, hisi_sas, qedf, mpt3sas; plus a whole load of minor updates.
The only core change this time around is the addition of request
batching for virtio. Since batching requires an additional flag to
use, it should be invisible to the rest of the drivers.
Signed-off-by: James E.J. Bottomley <jejb@linux.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 is mostly update of the usual drivers: qla2xxx, ufs, smartpqi,
lpfc, hisi_sas, qedf, mpt3sas; plus a whole load of minor updates. The
only core change this time around is the addition of request batching
for virtio. Since batching requires an additional flag to use, it
should be invisible to the rest of the drivers"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (264 commits)
scsi: hisi_sas: Fix the conflict between device gone and host reset
scsi: hisi_sas: Add BIST support for phy loopback
scsi: hisi_sas: Add hisi_sas_debugfs_alloc() to centralise allocation
scsi: hisi_sas: Remove some unused function arguments
scsi: hisi_sas: Remove redundant work declaration
scsi: hisi_sas: Remove hisi_sas_hw.slot_complete
scsi: hisi_sas: Assign NCQ tag for all NCQ commands
scsi: hisi_sas: Update all the registers after suspend and resume
scsi: hisi_sas: Retry 3 times TMF IO for SAS disks when init device
scsi: hisi_sas: Remove sleep after issue phy reset if sas_smp_phy_control() fails
scsi: hisi_sas: Directly return when running I_T_nexus reset if phy disabled
scsi: hisi_sas: Use true/false as input parameter of sas_phy_reset()
scsi: hisi_sas: add debugfs auto-trigger for internal abort time out
scsi: virtio_scsi: unplug LUNs when events missed
scsi: scsi_dh_rdac: zero cdb in send_mode_select()
scsi: fcoe: fix null-ptr-deref Read in fc_release_transport
scsi: ufs-hisi: use devm_platform_ioremap_resource() to simplify code
scsi: ufshcd: use devm_platform_ioremap_resource() to simplify code
scsi: hisi_sas: use devm_platform_ioremap_resource() to simplify code
scsi: ufs: Use kmemdup in ufshcd_read_string_desc()
...
A recent patch unconditionally marks the hba as in error as part of
resetting the adapter. The driver flow that called the adapter reset was a
recovery path, which expects the adapter to not be in an error state in
order to finish the recovery. Given the new error state being set, the
recovery fails and the adapter is left in limbo.
Revise the adapter reset routine so that it will only mark the adapter in
error if it was unable to reset the adapter.
Fixes: 8c24a4f643 ("scsi: lpfc: Fix crash due to port reset racing vs adapter error handling")
Link: https://lore.kernel.org/r/20190903215441.10490-1-jsmart2021@gmail.com
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Convert the remaining %pf users to %ps to prepare for the removal of the
old %pf conversion specifier support.
Fixes: 3235066449 ("scsi: lpfc: Migrate to %px and %pf in kernel print calls")
Link: https://lore.kernel.org/r/20190904160423.3865-1-sakari.ailus@linux.intel.com
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The 12.4.0.0 patch that merged WQ/CQ pairs into single per-cpu pair
contained a bug: a local variable was set to the queue pair by index. This
should have allowed the local variable to be natively used. Instead, the
code reused the index relative to the local variable, obtaining a random
pointer value that when used eventually faulted the system
Convert offending code to use local variable.
Fixes: c00f62e6c5 ("scsi: lpfc: Merge per-protocol WQ/CQ pairs into single per-cpu pair")
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Tested-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Raise the config max for lpfc_fcp_mq_threshold variable to 256.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: Hannes Reinecke <hare@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Capturing and downloading dif command data and dif data was done a dozen
years ago and no longer being used. Also creates a potential security hole.
Remove the debugfs buffer for dif debugging.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: KyleMahlkuch <kmahlkuc@linux.vnet.ibm.com>
CC: Hannes Reinecke <hare@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Per Dan Carpenter:
The patch d79c9e9d4b3d: "scsi: lpfc: Support dynamic unbounded SGL lists on
G7 hardware." from Aug 14, 2019, leads to the following static checker
warning:
drivers/scsi/lpfc/lpfc_init.c:4107 lpfc_new_io_buf()
error: not allocating enough data 784 vs 768
There was no need to compare sizes nor to allocate size based on a define.
Change allocation to use actual structure length
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update lpfc version to 12.4.0.0
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, each hardware queue, typically allocated per-cpu, consists of a
WQ/CQ pair per protocol. Meaning if both SCSI and NVMe are supported 2
WQ/CQ pairs will exist for the hardware queue. Separate queues are
unnecessary. The current implementation wastes memory backing the 2nd set
of queues, and the use of double the SLI-4 WQ/CQ's means less hardware
queues can be supported which means there may not always be enough to have
a pair per cpu. If there is only 1 pair per cpu, more cpu's may get their
own WQ/CQ.
Rework the implementation to use a single WQ/CQ pair by both protocols.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
FC-NVMe-2 added support for sequence level error recovery in the FC-NVME
protocol. This allows for the detection of errors and lost frames and
immediate retransmission of data to avoid exchange termination, which
escalates into NVMeoFC connection and association failures. A significant
RAS improvement.
The driver is modified to indicate support for SLER in the NVMe PRLI is
issues and to check for support in the PRLI response. When both sides
support it, the driver will set a bit in the WQE to enable the recovery
behavior on the exchange. The adapter will take care of all detection and
retransmission.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Typical SLI-4 hardware supports up to 2 4KB pages to be registered per XRI
to contain the exchanges Scatter/Gather List. This caps the number of SGL
elements that can be in the SGL. There are not extensions to extend the
list out of the 2 pages.
The G7 hardware adds a SGE type that allows the SGL to be vectored to a
different scatter/gather list segment. And that segment can contain a SGE
to go to another segment and so on. The initial segment must still be
pre-registered for the XRI, but it can be a much smaller amount (256Bytes)
as it can now be dynamically grown. This much smaller allocation can
handle the SG list for most normal I/O, and the dynamic aspect allows it to
support many MB's if needed.
The implementation creates a pool which contains "segments" and which is
initially sized to hold the initial small segment per xri. If an I/O
requires additional segments, they are allocated from the pool. If the
pool has no more segments, the pool is grown based on what is now
needed. After the I/O completes, the additional segments are returned to
the pool for use by other I/Os. Once allocated, the additional segments are
not released under the assumption of "if needed once, it will be needed
again". Pools are kept on a per-hardware queue basis, which is typically
1:1 per cpu, but may be shared by multiple cpus.
The switch to the smaller initial allocation significantly reduces the
memory footprint of the driver (which only grows if large ios are
issued). Based on the several K of XRIs for the adapter, the 8KB->256B
reduction can conserve 32MBs or more.
It has been observed with per-cpu resource pools that allocating a resource
on CPU A, may be put back on CPU B. While the get routines are distributed
evenly, only a limited subset of CPUs may be handling the put routines.
This can put a strain on the lpfc_put_cmd_rsp_buf_per_cpu routine because
all the resources are being put on a limited subset of CPUs.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Added code to support driver loopback with MDS Diagnostics. This style of
diagnostics passes frames from the fabric to the driver who then echo them
back out the link. SEND_FRAME WQEs are used to transmit the frames. Added
the SOF and EOF field location definitions for use by SEND_FRAME.
Also ensure that enable_mds_diags is a RW parameter.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
To aid better hardware detection when there are issues, report the first
and second level hardware revisions from the READ_REV command. Add the
elements to the existing hardware id string.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In order to see real addresses, convert %p with %px for kernel addresses
and replace %p with %pf for functions.
While converting, standardize on "x%px" throughout (not %px or 0x%px).
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While performing code review, several relatively simple optimizations can
be done in the fast path.
Add these optimizations (unlikely designators).
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Running on Coverity produced the following errors:
- coding style (indentation)
- memset size mismatch errors
note: comment cases where it is purposely a mismatch
Fix the errors.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
modinfo for lpfc_nvme_enable_fb is incorrect. FirstBurst on lpfc target is
not fully supported.
Update the attribute description
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver is allowing the user to change lpfc_enable_bg while loading the
driver against a FCoE adapter. This is not supported.
No check is made for the adapter type when applying the blockguard
enablement value.
Fix by verifying the adapter type before setting the enablement flag.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
GetTrunkInfo is displaying an incorrect link speed when the link is a trunk
and the link has gone down. The driver is not clearing the logical speed
as part of the link down transition.
Fix by setting the logical speed to UNKNOWN SPEED when the link goes down.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Max Frame Size value is shown as 34816 in fdmishow from Switch.
The driver uses bbRcvSize in common service param which is obtained from
the READ_SPARM mailbox command. The bbRcvSize field which is displayed is a
three nibble field but the driver is printing a full four nibbles.
Fix by masking off the upper nibble.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The scsi transport fc bsg interface does not expect the bsg_job_done()
callback to be done if the bsg request call returns failure. Several of the
HST_VENDOR cases in the driver unconditionally call bsg_job_done()
regardless of the returning value.
Fix the code to only call bsg_job_done() if the call to lpfc_bsg_request()
will return success.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When forcing the use of MSI (vs MSI-X) the driver is crashing in
pci_irq_get_affinity.
The driver was not using the new pci_alloc_irq_vectors interface in the MSI
path.
Fix by using pci_alloc_irq_vectors() with PCI_RQ_MSI in the MSI path.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver is currently reporting a non-zero nvme sg_seg_cnt value of 256
when nvme is disabled. It should be zero.
Fix by ensuring the value is cleared.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If an unsolicited ABTS was received, the driver looks up the exchange it
references. It it does various searches looking for the exchange
context. When one is eventually matched and it is associated with an XRI
context, the driver sends an ABORT WQE to terminate the exchange. Current
code looks at whether the transport had taken action on the XRI yet or not
(no action if set to LPFC_NVMET_STE_RCV; action if non-LPFC_NVMET_STE_RCV).
Based on action or not one of two (sol vs unsol) issue abort routines are
called. The unsol version cheats and transmits a sequence containing an
ABTS with no interaction with the adapter. The sol version issues an Abort
WQE and lets the adapter manage whether the ABTS is sent to not.
The issue is the unsol version is sending ABTS unconditionally for the
exchange that received the ABTS. It's unnecessary.
Remove the conditional and just call the adapter command-based routine to
let the adapter manage the ABTS.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
As part of firmware download, the adapter is reset. On the adapter the
reset causes the function to stop and all outstanding io is terminated
(without responses). The reset path then starts teardown of the adapter,
starting with deregistration of the remote ports with the nvme-fc
transport. The local port is then deregistered and the driver waits for
local port deregistration. This never finishes.
The remote port deregistrations terminated the nvme controllers, causing
them to send aborts for all the outstanding io. The aborts were serviced in
the driver, but stalled due to its state. The nvme layer then stops to
reclaim it's outstanding io before continuing. The io must be returned
before the reset on the controller is deemed complete and the controller
delete performed. The remote port deregistration won't complete until all
the controllers are terminated. And the local port deregistration won't
complete until all controllers and remote ports are terminated. Thus things
hang.
The issue is the reset which stopped the adapter also stopped all the
responses that would drive i/o completions, and the aborts were also
stopped that stopped i/o completions. The driver, when resetting the
adapter like this, needs to be generating the completions as part of the
adapter reset so that I/O complete (in error), and any aborts are not
queued.
Fix by adding flush routines whenever the adapter port has been reset or
discovered in error. The flush routines will generate the completions for
the scsi and nvme outstanding io. The abort ios, if waiting, will be caught
and flushed as well.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This issue is specific to SLI-3 adapters, specifically when DIF is used.
Once seen, this message floods the logs:
9064 BLKGRD: lpfc_scsi_prep_dma_buf_s3: Too many sg segments from
dma_map_sg
The driver, upon detecting an error such as too many elements in an sglist,
misrepresents the error by treating it as a temporary resource issue by
returning MLQUEUE_HOST_BUSY. In these cases, no retry will fix it and it
should have been a hard error. The repeated retry was causing the spamming
of the log.
As for the initial reason of why an I/O encountered this issue at all is
not clear as parameters set by the driver should have avoided this. The
dm multipath maintainer has been notified of the issue.
Fix by changing the return code for the dma mapping routines to indicate
cases that are not retryable and return DID_ERROR on those cases.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If the adapter encounters a condition which causes the adapter to fail
(driver must detect the failure) simultaneously to a request to the driver
to reset the adapter (such as a host_reset), the reset path will be racing
with the asynchronously-detect adapter failure path. In the failing
situation, one path has started to tear down the adapter data structures
(io_wq's) while the other path has initiated a repeat of the teardown and
is in the lpfc_sli_flush_xxx_rings path and attempting to access the
just-freed data structures.
Fix by the following:
- In cases where an adapter failure is detected, rather than explicitly
calling offline_eratt() to start the teardown, change the adapter state
and let the later calls of posted work to the slowpath thread invoke the
adapter recovery. In essence, this means all requests to reset are
serialized on the slowpath thread.
- Clean up the routine that restarts the adapter. If there is a failure
from brdreset, don't immediately error and leave things in a partial
state. Instead, ensure the adapter state is set and finish the teardown
of structures before returning.
- If in the scsi host reset handler and the board fails to reset and
restart (which can be due to parallel reset/recovery paths), instead of
hard failing and explicitly calling offline_eratt() (which gets into the
redundant path), just fail out and let the asynchronous path resolve the
adapter state.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
During cable pull testing a deadlock was seen between lpfc_nlp_counters()
vs lpfc_mbox_process_link_up() vs lpfc_work_list_done(). They are all
waiting on the shost->host_lock.
Issue is all of these cases raise irq when taking out the lock but use
spin_unlock_irq() when unlocking. The unlock path is will unconditionally
re-enable interrupts in cases where irq state should be preserved. The
re-enablement allowed the other paths to execute which then causes the
deadlock.
Fix by converting the lock/unlock to irqsave/irqrestore.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In a test with high nvme remote port counts connected via a multi-hop FC
switch config where switches were systematically reset (e.g. fabric
partitioning and re-establishment), the nvme remote ports would switch
addresses based on the switch reconfiguration events. The driver would get
into a situation where the nvme port changed address, PLOGI and PRLI would
succeed nvme transport registration occurred, but subsequent LS requests by
the nvme subsystem failed due to a bad ndlp state and connectivity to the
device failed.
The driver hit a race condition on multiple devices that address swapped
simultaneously. In cases where the driver notices the remote port structure
came back as the same value as previously (meaning a nvme_rport structure
was re-enabled and did not go through devloss_tmo/connect_tmo_failures on
all controllers) the driver would unconditionally exit assuming the ndlp
information was correct. But, if the ndlp's had been swapped, the ndlp had
stale port state information, which when used by the LS request commands,
would fail the commands.
Fix by checking whether a node swap had occurred, and only exit if no ndlp
swap had occurred.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In situations where zoning is not being used, thus NVMe initiators see
other NVMe initiators as well as NVMe targets, a link bounce on an
initiator will cause the NVMe initiators to spew "6169" State Error
messages.
The driver is not qualifying whether the remote port is a NVMe targer or
not before calling the lpfc_nvme_rescan_port(), which validates the role
and prints the message if its only an NVMe initiator.
Fix by the following:
- Before calling lpfc_nvme_rescan_port() ensure that the node is a NVMe
storage target or a NVMe discovery controller.
- Clean up implementation of lpfc_nvme_rescan_port. remoteport pointer
will always be NULL if a NVMe initiator only. But, grabbing of
remoteport pointer should be done under lock to coincide with the
registering of the remote port with the fc transport.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
On an SLI-3 adapter which does not support NVMe, but with the driver global
attribute to enable nvme on any adapter if it does support NVMe
(e.g. module parameter lpfc_enable_fc4_type=3), the SGL and total SGE
values are being munged by the protocol enablement when it shouldn't be.
Correct by changing the location of where the NVME sgl information is being
applied, which will avoid any SLI-3-based adapter.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If admin changes the devloss_tmo on an rport via the fc_remote_port rport
dev_loss_tmo attribute, the value is on set on scsi stack. The change is
not propagated to NVMe.
The set routine in the lldd lacks the call to
nvme_fc_set_remoteport_devloss() to set the value.
Fix by adding the call to the lldd set routine.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In tests with remote ports contantly logging out/logging coupled with
occassional local link bounce, if a remote port is disocnnected for longer
than devloss_tmo and then subsequently reconnected, eventually the test
will fail to login with the remote port and remote port connectivity is
lost.
When devloss_tmo expires, the driver does not free the node struct until
the port or npiv instances is being deleted. The node is left allocated but
the state set to UNUSED. If the node was in the process of logging in when
the local link drop occurred, meaning the RPI was allocated for the node in
order to send the ELS, but not yet registered which comes after successful
login, the node is moved to the NPR state, and if devloss expires, to
UNUSED state. If the remote port comes back, the node associated with it
is restarted and this path happens to allocate a new RPI and overwrites the
prior RPI value. In the cases where the port was logged in and loggs out,
the path did release the RPI but did not set the node rpi value. In the
cases where the remote port never finished logging in, the path never did
the call to release the rpi. In this latter case, when the node is
subsequently restore, the new rpi allocation overwrites the rpi that was
not released, and the rpi is now leaked. Eventually the port will run out
of RPI resources to log into new remote ports.
Fix by following changes:
- When an rpi is released, do so under locks and ensure the node rpi value
is set to a non-allocated value (LPFC_RPI_ALLOC_ERROR). Note:
refactored to a small service routine to avoid indentation issues.
- When re-enabling a node, check the rpi value to determine if a new
allocation is necessary. If already set, use the prior rpi.
Enhanced logging to help in the future.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a remote port is removed and remains removed for devloss_tmo, if an RSCN
is subsequently received indicating the presence of the remte port, the
driver does not login to and rediscovery the remote port.
Currently, in order to for a port to be rediscovered post an RSCN, the node
state must be NPR to reflect not logged in. When devloss expires, the node
state is marked UNUSED. When an RSCN occurs, the nodes referenced by the
RSCN will have a NPR_2B_DISC flag set, but the re-login will only be
attempted if the node is in NPR_NODE state. Thus the node is skipped over.
Fix by recognizing the NPR_2B_DISC and UNUSED and transition the node back
to NPR state to allow the re-login to take place.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If an admin updates lpfc's devloss_tmo sysfs attribute, the kernel will
oops.
Coding of a loop allowed a new value (rport) to be set/checked for null
followed by an older value (remoteport) checked for null to allow progress
where the new value, even though null, will be referenced.
Rework the logic to validate and prevent any reference to the null ptr.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
It's possible for the driver to initiate an FLOGI and before it completes,
another link down/up transition occurs requiring a new FLOGI. Currently,
nothing is done to abort/noop the older FLOGI request to the adapter, so if
this transition occurs and the FLOGI completion is received after the link
down/up transition, the driver may erroneously act on the older FLOGI. In
most cases, the adapter properly terminates/fails the FLOGI, but there is a
timing condition where the FLOGI may complete on the wire prior to the
transition, but the response may not be seen/processed by the driver before
the driver sees the link transition.
Fix by having the link down handler in the driver run through any
outstanding ELS's and change the completion handler of the ELS so that it
will be no-op'd and released.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When tearing down the adapter for a reset, online/offline, or driver
unload, the queue free routine would hit a GPF oops. This only occurs on
conditions where the number of hardware queues created is fewer than the
number of cpus in the system. In this condition cpus share a hardware
queue. And of course, it's the 2nd cpu that shares a hardware that
attempted to free it a second time and hit the oops.
Fix by reworking the cpu to hardware queue mapping such that:
Assignment of hardware queues to cpus occur in two passes:
first pass: is first time assignment of a hardware queue to a cpu.
This will set the LPFC_CPU_FIRST_IRQ flag for the cpu.
second pass: for cpus that did not get a hardware queue they will
be assigned one from a primary cpu (one set in first pass).
Deletion of hardware queues is driven by cpu itteration, and queues
will only be deleted if the LPFC_CPU_FIRST_IRQ flag is set.
Also contains a few small cleanup fixes and a little better logging.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The adapter reset path (lpfc_sli_hba_down) is taking/releasing a lock with
irq. But, the path is already under the hbalock which raised irq so it's
unnecessary.
Convert to simple lock/unlock.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
lpfc_nvme_register_port hit a null prev_ndlp pointer in a test with lots of
target ports swapping addresses. The oldport value was stale, thus it's
ndlp (prev_ndlp set to it) was used.
Fix by moving oldrport pointer checks, and if used prev_ndlp pointer
assignment, to be done while the lock is held.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver is inadvertently trying to issue an INIT_VPI mailbox command on
an SLI-3 driver. The command is specific to SLI-4. When the call is made to
send the command, if on an SLI-3 adapter, an array pointer is NULL and the
driver will oops.
Fix by restricting the command to SLI-4 adapters only.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a target issues an ADISC to the port and the target is a NVME target,
the driver is inadvertantly invalidating the login and marking the remote
port as logged out. Communication with the target is lost.
Revise the ADISC check so that FCP or NVME targets will be marked valid at
the end of ADISC processing. Enhance logging to recognize condition
better.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Some remote ports may be slow in registering their GID_FT protocol
information with the fabric. If the remote port is an initiator, it may
send PLOGI to the port before the GID_FT logic is complete. Meaning, after
accepting the PLOGI, when the driver may see no response to the GID_FT that
is issued after the login to determine the protocols supported so that
proper PRLI's may be transmit. If the driver has no fc4 information, it
currently stops and the remote port is not discovered.
Fix by issuing a LOGO when there is no GID_FT information. The LOGO
completion handling will attempt to re-login if the nport_id is still
present.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In cases of remote-port-side cable pull/replug, there happens to be a
target that upon replug will send the port a PLOGI, a PRLI, and a LOGO.
When this sequence is received by the driver, the PLOGI accepted and a
GFT_ID is issued to find the protocol support for the remote port. While
the GFT_ID is outstanding, a LOGO is received. The driver logs the remote
port out and unregisters the RPI and schedules a new PLOGI transmission.
However, the GFT_ID was not terminated. When it completed, the driver
attempted to transition the remote port to PRLI transmission, which cancels
the PLOGI scheduling. The PRLI transmit attempt is rejected by the adapter
as the remote port is not logged in. No retry is attempted as it's expected
the logout is noted and the supposedly scheduled PLOGI should address the
state. As there is no PLOGI, the remote port does not get re-discovered.
Fix by aborting the outstanding GFT_ID if the related remote port is logged
out.
Ensure a PRLI transmit attempt only occurs if the remote port is logging
in. This avoids the incorrect attempt while logged out.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If the adapter is reset while there are outstanding ELS's, subsequent
reinitialization of the adapter will fail as it has not recovered all of
the io contexts relative to the ELS's.
If an ELS timed out or otherwise failed and an the ELS was attempted to be
aborted (which changes the ELS completion context), in causes where the
driver generates completions for the outstanding IO as the adapter would
not due to being reset, the driver released only the ELS context and failed
to release the abort context. When the adapter went to reinit, as it had
not received all of the contexts, it failed to reinit.
Fix by having the ELS completion handler identify the driver-generated
completion status and release the abort context.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Unusually high IO latency can be observed with little IO in progress. The
latency may remain high regardless of amount of IO and can only be cleared
by forcing lpfc_fcp_imax values to non-zero and then back to zero.
The driver's eq_delay mechanism that scales the interrupt coalescing based
on io completion load failed to reduce or turn off coalescing when load
decreased. Specifically, if no io completed on a cpu within an eq_delay
polling window, the eq delay processing was skipped and no change was made
to the coalescing values. This left the coalescing values set when they
were no longer applicable.
Fix by always clearing the percpu counters for each time period and always
run the eq_delay calculations if an eq has a non-zero coalescing value.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If a timer routine uses workqueues, it could fire before the workqueue is
allocated.
Fix by allocating the workqueue before the timer routines are setup
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After seeing some interoperability issues with ADISC, it was determined the
ELS definitions in lpfc were using types that allowed the compiler to add
pad to the structure, causing the structure to no longer be per spec. The
offending structures are ADISC, FAN, and RNID.
This patch implements the simple fix of eliminating the pad by forcing the
compiler to pack the structure. Care was taken to ensure field accesses
won't be by operations that would hit a bad field alignment.
The better solution would be to convert to the uapi fc header definitions,
but the number of changes required to do is rather intrusive so this course
of action was deferred.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When connected to a high number of remote ports, the driver is encountering
PLOGI errors. The errors are due to adapter detected failures indicating
illegal field values.
Turns out the driver was prematurely clearing an RPI bitmask before waiting
for an UNREG_RPI mailbox completion. This allowed the RPI to be reused
before it was actually available.
Fix by clearing RPI bitmask only after UNREG_RPI mailbox completion.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
scsi-mq operation inherently performs pre-allocation of resources for
blk-mq request queues. Even though the kdump environment reduces the
configuration to a single CPU, thus 1 hardware queue, which helps
significantly, the resources are still rather large due to the per request
allocations. blk-mq pre-allocations can be over 4KB per request. With
adapter can_queue values in the 4k or 8k range, this can easily be 32MBs
before any other driver memory is factored in. Driver SGL DMA buffer
allocation can be up to 8KB per request as well adding an additional
64MB. Totals are well over 100MB for a single shost. Given kdump memory
auto-sizing utilities don't accommodate this amount of memory well, it's
very possible for kdump to fail due to lack of memory.
Fix by having the driver recognize that it is booting within a kdump
context and reduce the number of requests it will support to a more
reasonable value.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
As dma_pool_destroy and mempool_destroy functions has NULL check. We may
not need NULL check before calling them.
Fix below warnings reported by coccicheck
./drivers/scsi/lpfc/lpfc_mem.c:252:2-18: WARNING: NULL check before some
freeing functions is not needed.
./drivers/scsi/lpfc/lpfc_mem.c:255:2-18: WARNING: NULL check before some
freeing functions is not needed.
./drivers/scsi/lpfc/lpfc_mem.c:258:2-18: WARNING: NULL check before some
freeing functions is not needed.
./drivers/scsi/lpfc/lpfc_mem.c:261:2-18: WARNING: NULL check before some
freeing functions is not needed.
./drivers/scsi/lpfc/lpfc_mem.c:265:2-18: WARNING: NULL check before some
freeing functions is not needed.
./drivers/scsi/lpfc/lpfc_mem.c:269:2-17: WARNING: NULL check before some
freeing functions is not needed.
Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When SCSI-MQ is enabled, the SCSI-MQ layers will do pre-allocation of MQ
resources based on shost values set by the driver. In newer cases of the
driver, which attempts to set nr_hw_queues to the cpu count, the
multipliers become excessive, with a single shost having SCSI-MQ
pre-allocation reaching into the multiple GBytes range. NPIV, which
creates additional shosts, only multiply this overhead. On lower-memory
systems, this can exhaust system memory very quickly, resulting in a system
crash or failures in the driver or elsewhere due to low memory conditions.
After testing several scenarios, the situation can be mitigated by limiting
the value set in shost->nr_hw_queues to 4. Although the shost values were
changed, the driver still had per-cpu hardware queues of its own that
allowed parallelization per-cpu. Testing revealed that even with the
smallish number for nr_hw_queues for SCSI-MQ, performance levels remained
near maximum with the within-driver affiinitization.
A module parameter was created to allow the value set for the nr_hw_queues
to be tunable.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
As spin_unlock_irq will enable interrupts.
Function lpfc_findnode_rpi is called from
lpfc_sli_abts_err_handler (./drivers/scsi/lpfc/lpfc_sli.c)
<- lpfc_sli_async_event_handler
<- lpfc_sli_process_unsol_iocb
<- lpfc_sli_handle_fast_ring_event
<- lpfc_sli_fp_intr_handler
<- lpfc_sli_intr_handler
and lpfc_sli_intr_handler is an interrupt handler.
Interrupts are enabled in interrupt handler. Use
spin_lock_irqsave/spin_unlock_irqrestore instead of spin_(un)lock_irq in
IRQ context to avoid this.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the redundant initialization code.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When a configurations runs with a single cpu (such as a kdump kernel),
which causes the driver to request a single vector, when the driver
subsequently requests an irq affinity mask, the mask comes back null. The
driver currently does nothing in this scenario, which leaves mappings to
hardware queues incomplete and crashes the system.
Fix by recognizing the null mask and assigning the vector to the first cpu
in the system.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A null check before a kfree is redundant, so remove it. This is detected
by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This is the final round of mostly small fixes in our initial submit.
It's mostly minor fixes and driver updates. The only change of note
is adding a virt_boundary_mask to the SCSI host and host template to
parametrise this for NVMe devices instead of having them do a call in
slave_alloc. It's a fairly straightforward conversion except in the
two NVMe handling drivers that didn't set it who now have a virtual
infinity parameter added.
Signed-off-by: James E.J. Bottomley <jejb@linux.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 the final round of mostly small fixes in our initial submit.
It's mostly minor fixes and driver updates. The only change of note is
adding a virt_boundary_mask to the SCSI host and host template to
parametrise this for NVMe devices instead of having them do a call in
slave_alloc. It's a fairly straightforward conversion except in the
two NVMe handling drivers that didn't set it who now have a virtual
infinity parameter added"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
scsi: megaraid_sas: set an unlimited max_segment_size
scsi: mpt3sas: set an unlimited max_segment_size for SAS 3.0 HBAs
scsi: IB/srp: set virt_boundary_mask in the scsi host
scsi: IB/iser: set virt_boundary_mask in the scsi host
scsi: storvsc: set virt_boundary_mask in the scsi host template
scsi: ufshcd: set max_segment_size in the scsi host template
scsi: core: take the DMA max mapping size into account
scsi: core: add a host / host template field for the virt boundary
scsi: core: Fix race on creating sense cache
scsi: sd_zbc: Fix compilation warning
scsi: libfc: fix null pointer dereference on a null lport
scsi: zfcp: fix GCC compiler warning emitted with -Wmaybe-uninitialized
scsi: zfcp: fix request object use-after-free in send path causing wrong traces
scsi: zfcp: fix request object use-after-free in send path causing seqno errors
scsi: megaraid_sas: Update driver version to 07.710.50.00
scsi: megaraid_sas: Add module parameter for FW Async event logging
scsi: megaraid_sas: Enable msix_load_balance for Invader and later controllers
scsi: megaraid_sas: Fix calculation of target ID
scsi: lpfc: reduce stack size with CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE
scsi: devinfo: BLIST_TRY_VPD_PAGES for SanDisk Cruzer Blade
...
Merge updates from Andrew Morton:
"Am experimenting with splitting MM up into identifiable subsystems
perhaps with a view to gitifying it in complex ways. Also with more
verbose "incoming" emails.
Most of MM is here and a few other trees.
Subsystems affected by this patch series:
- hotfixes
- iommu
- scripts
- arch/sh
- ocfs2
- mm:slab-generic
- mm:slub
- mm:kmemleak
- mm:kasan
- mm:cleanups
- mm:debug
- mm:pagecache
- mm:swap
- mm:memcg
- mm:gup
- mm:pagemap
- mm:infrastructure
- mm:vmalloc
- mm:initialization
- mm:pagealloc
- mm:vmscan
- mm:tools
- mm:proc
- mm:ras
- mm:oom-kill
hotfixes:
mm: vmscan: scan anonymous pages on file refaults
mm/nvdimm: add is_ioremap_addr and use that to check ioremap address
mm/memcontrol: fix wrong statistics in memory.stat
mm/z3fold.c: lock z3fold page before __SetPageMovable()
nilfs2: do not use unexported cpu_to_le32()/le32_to_cpu() in uapi header
MAINTAINERS: nilfs2: update email address
iommu:
include/linux/dmar.h: replace single-char identifiers in macros
scripts:
scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
scripts/decode_stacktrace: look for modules with .ko.debug extension
scripts/spelling.txt: drop "sepc" from the misspelling list
scripts/spelling.txt: add spelling fix for prohibited
scripts/decode_stacktrace: Accept dash/underscore in modules
scripts/spelling.txt: add more spellings to spelling.txt
arch/sh:
arch/sh/configs/sdk7786_defconfig: remove CONFIG_LOGFS
sh: config: remove left-over BACKLIGHT_LCD_SUPPORT
sh: prevent warnings when using iounmap
ocfs2:
fs: ocfs: fix spelling mistake "hearbeating" -> "heartbeat"
ocfs2/dlm: use struct_size() helper
ocfs2: add last unlock times in locking_state
ocfs2: add locking filter debugfs file
ocfs2: add first lock wait time in locking_state
ocfs: no need to check return value of debugfs_create functions
fs/ocfs2/dlmglue.c: unneeded variable: "status"
ocfs2: use kmemdup rather than duplicating its implementation
mm:slab-generic:
Patch series "mm/slab: Improved sanity checking":
mm/slab: validate cache membership under freelist hardening
mm/slab: sanity-check page type when looking up cache
lkdtm/heap: add tests for freelist hardening
mm:slub:
mm/slub.c: avoid double string traverse in kmem_cache_flags()
slub: don't panic for memcg kmem cache creation failure
mm:kmemleak:
mm/kmemleak.c: fix check for softirq context
mm/kmemleak.c: change error at _write when kmemleak is disabled
docs: kmemleak: add more documentation details
mm:kasan:
mm/kasan: print frame description for stack bugs
Patch series "Bitops instrumentation for KASAN", v5:
lib/test_kasan: add bitops tests
x86: use static_cpu_has in uaccess region to avoid instrumentation
asm-generic, x86: add bitops instrumentation for KASAN
Patch series "mm/kasan: Add object validation in ksize()", v3:
mm/kasan: introduce __kasan_check_{read,write}
mm/kasan: change kasan_check_{read,write} to return boolean
lib/test_kasan: Add test for double-kzfree detection
mm/slab: refactor common ksize KASAN logic into slab_common.c
mm/kasan: add object validation in ksize()
mm:cleanups:
include/linux/pfn_t.h: remove pfn_t_to_virt()
Patch series "remove ARCH_SELECT_MEMORY_MODEL where it has no effect":
arm: remove ARCH_SELECT_MEMORY_MODEL
s390: remove ARCH_SELECT_MEMORY_MODEL
sparc: remove ARCH_SELECT_MEMORY_MODEL
mm/gup.c: make follow_page_mask() static
mm/memory.c: trivial clean up in insert_page()
mm: make !CONFIG_HUGE_PAGE wrappers into static inlines
include/linux/mm_types.h: ifdef struct vm_area_struct::swap_readahead_info
mm: remove the account_page_dirtied export
mm/page_isolation.c: change the prototype of undo_isolate_page_range()
include/linux/vmpressure.h: use spinlock_t instead of struct spinlock
mm: remove the exporting of totalram_pages
include/linux/pagemap.h: document trylock_page() return value
mm:debug:
mm/failslab.c: by default, do not fail allocations with direct reclaim only
Patch series "debug_pagealloc improvements":
mm, debug_pagelloc: use static keys to enable debugging
mm, page_alloc: more extensive free page checking with debug_pagealloc
mm, debug_pagealloc: use a page type instead of page_ext flag
mm:pagecache:
Patch series "fix filler_t callback type mismatches", v2:
mm/filemap.c: fix an overly long line in read_cache_page
mm/filemap: don't cast ->readpage to filler_t for do_read_cache_page
jffs2: pass the correct prototype to read_cache_page
9p: pass the correct prototype to read_cache_page
mm/filemap.c: correct the comment about VM_FAULT_RETRY
mm:swap:
mm, swap: fix race between swapoff and some swap operations
mm/swap_state.c: simplify total_swapcache_pages() with get_swap_device()
mm, swap: use rbtree for swap_extent
mm/mincore.c: fix race between swapoff and mincore
mm:memcg:
memcg, oom: no oom-kill for __GFP_RETRY_MAYFAIL
memcg, fsnotify: no oom-kill for remote memcg charging
mm, memcg: introduce memory.events.local
mm: memcontrol: dump memory.stat during cgroup OOM
Patch series "mm: reparent slab memory on cgroup removal", v7:
mm: memcg/slab: postpone kmem_cache memcg pointer initialization to memcg_link_cache()
mm: memcg/slab: rename slab delayed deactivation functions and fields
mm: memcg/slab: generalize postponed non-root kmem_cache deactivation
mm: memcg/slab: introduce __memcg_kmem_uncharge_memcg()
mm: memcg/slab: unify SLAB and SLUB page accounting
mm: memcg/slab: don't check the dying flag on kmem_cache creation
mm: memcg/slab: synchronize access to kmem_cache dying flag using a spinlock
mm: memcg/slab: rework non-root kmem_cache lifecycle management
mm: memcg/slab: stop setting page->mem_cgroup pointer for slab pages
mm: memcg/slab: reparent memcg kmem_caches on cgroup removal
mm, memcg: add a memcg_slabinfo debugfs file
mm:gup:
Patch series "switch the remaining architectures to use generic GUP", v4:
mm: use untagged_addr() for get_user_pages_fast addresses
mm: simplify gup_fast_permitted
mm: lift the x86_32 PAE version of gup_get_pte to common code
MIPS: use the generic get_user_pages_fast code
sh: add the missing pud_page definition
sh: use the generic get_user_pages_fast code
sparc64: add the missing pgd_page definition
sparc64: define untagged_addr()
sparc64: use the generic get_user_pages_fast code
mm: rename CONFIG_HAVE_GENERIC_GUP to CONFIG_HAVE_FAST_GUP
mm: reorder code blocks in gup.c
mm: consolidate the get_user_pages* implementations
mm: validate get_user_pages_fast flags
mm: move the powerpc hugepd code to mm/gup.c
mm: switch gup_hugepte to use try_get_compound_head
mm: mark the page referenced in gup_hugepte
mm/gup: speed up check_and_migrate_cma_pages() on huge page
mm/gup.c: remove some BUG_ONs from get_gate_page()
mm/gup.c: mark undo_dev_pagemap as __maybe_unused
mm:pagemap:
asm-generic, x86: introduce generic pte_{alloc,free}_one[_kernel]
alpha: switch to generic version of pte allocation
arm: switch to generic version of pte allocation
arm64: switch to generic version of pte allocation
csky: switch to generic version of pte allocation
m68k: sun3: switch to generic version of pte allocation
mips: switch to generic version of pte allocation
nds32: switch to generic version of pte allocation
nios2: switch to generic version of pte allocation
parisc: switch to generic version of pte allocation
riscv: switch to generic version of pte allocation
um: switch to generic version of pte allocation
unicore32: switch to generic version of pte allocation
mm/pgtable: drop pgtable_t variable from pte_fn_t functions
mm/memory.c: fail when offset == num in first check of __vm_map_pages()
mm:infrastructure:
mm/mmu_notifier: use hlist_add_head_rcu()
mm:vmalloc:
Patch series "Some cleanups for the KVA/vmalloc", v5:
mm/vmalloc.c: remove "node" argument
mm/vmalloc.c: preload a CPU with one object for split purpose
mm/vmalloc.c: get rid of one single unlink_va() when merge
mm/vmalloc.c: switch to WARN_ON() and move it under unlink_va()
mm/vmalloc.c: spelling> s/informaion/information/
mm:initialization:
mm/large system hash: use vmalloc for size > MAX_ORDER when !hashdist
mm/large system hash: clear hashdist when only one node with memory is booted
mm:pagealloc:
arm64: move jump_label_init() before parse_early_param()
Patch series "add init_on_alloc/init_on_free boot options", v10:
mm: security: introduce init_on_alloc=1 and init_on_free=1 boot options
mm: init: report memory auto-initialization features at boot time
mm:vmscan:
mm: vmscan: remove double slab pressure by inc'ing sc->nr_scanned
mm: vmscan: correct some vmscan counters for THP swapout
mm:tools:
tools/vm/slabinfo: order command line options
tools/vm/slabinfo: add partial slab listing to -X
tools/vm/slabinfo: add option to sort by partial slabs
tools/vm/slabinfo: add sorting info to help menu
mm:proc:
proc: use down_read_killable mmap_sem for /proc/pid/maps
proc: use down_read_killable mmap_sem for /proc/pid/smaps_rollup
proc: use down_read_killable mmap_sem for /proc/pid/pagemap
proc: use down_read_killable mmap_sem for /proc/pid/clear_refs
proc: use down_read_killable mmap_sem for /proc/pid/map_files
mm: use down_read_killable for locking mmap_sem in access_remote_vm
mm: smaps: split PSS into components
mm: vmalloc: show number of vmalloc pages in /proc/meminfo
mm:ras:
mm/memory-failure.c: clarify error message
mm:oom-kill:
mm: memcontrol: use CSS_TASK_ITER_PROCS at mem_cgroup_scan_tasks()
mm, oom: refactor dump_tasks for memcg OOMs
mm, oom: remove redundant task_in_mem_cgroup() check
oom: decouple mems_allowed from oom_unkillable_task
mm/oom_kill.c: remove redundant OOM score normalization in select_bad_process()"
* akpm: (147 commits)
mm/oom_kill.c: remove redundant OOM score normalization in select_bad_process()
oom: decouple mems_allowed from oom_unkillable_task
mm, oom: remove redundant task_in_mem_cgroup() check
mm, oom: refactor dump_tasks for memcg OOMs
mm: memcontrol: use CSS_TASK_ITER_PROCS at mem_cgroup_scan_tasks()
mm/memory-failure.c: clarify error message
mm: vmalloc: show number of vmalloc pages in /proc/meminfo
mm: smaps: split PSS into components
mm: use down_read_killable for locking mmap_sem in access_remote_vm
proc: use down_read_killable mmap_sem for /proc/pid/map_files
proc: use down_read_killable mmap_sem for /proc/pid/clear_refs
proc: use down_read_killable mmap_sem for /proc/pid/pagemap
proc: use down_read_killable mmap_sem for /proc/pid/smaps_rollup
proc: use down_read_killable mmap_sem for /proc/pid/maps
tools/vm/slabinfo: add sorting info to help menu
tools/vm/slabinfo: add option to sort by partial slabs
tools/vm/slabinfo: add partial slab listing to -X
tools/vm/slabinfo: order command line options
mm: vmscan: correct some vmscan counters for THP swapout
mm: vmscan: remove double slab pressure by inc'ing sc->nr_scanned
...
The RISC-V architecture has a register named the "Supervisor Exception
Program Counter", or "sepc". This abbreviation triggers checkpatch.pl's
misspelling detector, resulting in noise in the checkpatch output. The
risk that this noise could cause more useful warnings to be missed seems
to outweigh the harm of an occasional misspelling of "spec". Thus drop
the "sepc" entry from the misspelling list.
[akpm@linux-foundation.org: fix existing "sepc" instances, per Joe]
Link: http://lkml.kernel.org/r/20190518210037.13674-1-paul.walmsley@sifive.com
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The lpfc_debug_dump_all_queues() function repeatedly calls into
lpfc_debug_dump_qe() which has a temporary 128 byte buffer. This was fine
before the introduction of CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE because
each instance could occupy the same stack slot. However, now they each get
their own copy, which leads to a huge increase in stack usage as seen from
the compiler warning:
drivers/scsi/lpfc/lpfc_debugfs.c: In function 'lpfc_debug_dump_all_queues':
drivers/scsi/lpfc/lpfc_debugfs.c:6474:1: error: the frame size of 1712 bytes is larger than 100 bytes [-Werror=frame-larger-than=]
Avoid this by not marking lpfc_debug_dump_qe() as inline so the compiler
can choose to emit a static version of this function when it's needed or
otherwise silently drop it. As an added benefit, not inlining multiple
copies of this function means we save several kilobytes of .text section,
reducing the file size from 47kb to 43.
It is somewhat unusual to have a function that is static but not inline in
a header file, but this does not cause problems here because it is only
used by other inline functions. It would however seem reasonable to move
all the lpfc_debug_dump_* functions into lpfc_debugfs.c and not mark them
inline as a later cleanup.
Fixes: 81a56f6dcd ("gcc-plugins: structleak: Generalize to all variable types")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This topic branch covers a fundamental change in how our sg lists are
allocated to make mq more efficient by reducing the size of the
preallocated sg list. This necessitates a large number of driver
changes because the previous guarantee that if a driver specified
SG_ALL as the size of its scatter list, it would get a non-chained
list and didn't need to bother with scatterlist iterators is now
broken and every driver *must* use scatterlist iterators.
This was broken out as a separate topic because we need to convert all
the drivers before pulling the trigger and unconverted drivers kept
being found, necessitating a rebase.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI scatter-gather list updates from James Bottomley:
"This topic branch covers a fundamental change in how our sg lists are
allocated to make mq more efficient by reducing the size of the
preallocated sg list.
This necessitates a large number of driver changes because the
previous guarantee that if a driver specified SG_ALL as the size of
its scatter list, it would get a non-chained list and didn't need to
bother with scatterlist iterators is now broken and every driver
*must* use scatterlist iterators.
This was broken out as a separate topic because we need to convert all
the drivers before pulling the trigger and unconverted drivers kept
being found, necessitating a rebase"
* tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (21 commits)
scsi: core: don't preallocate small SGL in case of NO_SG_CHAIN
scsi: lib/sg_pool.c: clear 'first_chunk' in case of no preallocation
scsi: core: avoid preallocating big SGL for data
scsi: core: avoid preallocating big SGL for protection information
scsi: lib/sg_pool.c: improve APIs for allocating sg pool
scsi: esp: use sg helper to iterate over scatterlist
scsi: NCR5380: use sg helper to iterate over scatterlist
scsi: wd33c93: use sg helper to iterate over scatterlist
scsi: ppa: use sg helper to iterate over scatterlist
scsi: pcmcia: nsp_cs: use sg helper to iterate over scatterlist
scsi: imm: use sg helper to iterate over scatterlist
scsi: aha152x: use sg helper to iterate over scatterlist
scsi: s390: zfcp_fc: use sg helper to iterate over scatterlist
scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist
scsi: usb: image: microtek: use sg helper to iterate over scatterlist
scsi: pmcraid: use sg helper to iterate over scatterlist
scsi: ipr: use sg helper to iterate over scatterlist
scsi: mvumi: use sg helper to iterate over scatterlist
scsi: lpfc: use sg helper to iterate over scatterlist
scsi: advansys: use sg helper to iterate over scatterlist
...
This is mostly update of the usual drivers: qla2xxx, hpsa, lpfc, ufs,
mpt3sas, ibmvscsi, megaraid_sas, bnx2fc and hisi_sas as well as the
removal of the osst driver (I heard from Willem privately that he
would like the driver removed because all his test hardware has
failed). Plus number of minor changes, spelling fixes and other
trivia.
Signed-off-by: James E.J. Bottomley <jejb@linux.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 is mostly update of the usual drivers: qla2xxx, hpsa, lpfc, ufs,
mpt3sas, ibmvscsi, megaraid_sas, bnx2fc and hisi_sas as well as the
removal of the osst driver (I heard from Willem privately that he
would like the driver removed because all his test hardware has
failed). Plus number of minor changes, spelling fixes and other
trivia.
The big merge conflict this time around is the SPDX licence tags.
Following discussion on linux-next, we believe our version to be more
accurate than the one in the tree, so the resolution is to take our
version for all the SPDX conflicts"
Note on the SPDX license tag conversion conflicts: the SCSI tree had
done its own SPDX conversion, which in some cases conflicted with the
treewide ones done by Thomas & co.
In almost all cases, the conflicts were purely syntactic: the SCSI tree
used the old-style SPDX tags ("GPL-2.0" and "GPL-2.0+") while the
treewide conversion had used the new-style ones ("GPL-2.0-only" and
"GPL-2.0-or-later").
In these cases I picked the new-style one.
In a few cases, the SPDX conversion was actually different, though. As
explained by James above, and in more detail in a pre-pull-request
thread:
"The other problem is actually substantive: In the libsas code Luben
Tuikov originally specified gpl 2.0 only by dint of stating:
* This file is licensed under GPLv2.
In all the libsas files, but then muddied the water by quoting GPLv2
verbatim (which includes the or later than language). So for these
files Christoph did the conversion to v2 only SPDX tags and Thomas
converted to v2 or later tags"
So in those cases, where the spdx tag substantially mattered, I took the
SCSI tree conversion of it, but then also took the opportunity to turn
the old-style "GPL-2.0" into a new-style "GPL-2.0-only" tag.
Similarly, when there were whitespace differences or other differences
to the comments around the copyright notices, I took the version from
the SCSI tree as being the more specific conversion.
Finally, in the spdx conversions that had no conflicts (because the
treewide ones hadn't been done for those files), I just took the SCSI
tree version as-is, even if it was old-style. The old-style conversions
are perfectly valid, even if the "-only" and "-or-later" versions are
perhaps more descriptive.
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (185 commits)
scsi: qla2xxx: move IO flush to the front of NVME rport unregistration
scsi: qla2xxx: Fix NVME cmd and LS cmd timeout race condition
scsi: qla2xxx: on session delete, return nvme cmd
scsi: qla2xxx: Fix kernel crash after disconnecting NVMe devices
scsi: megaraid_sas: Update driver version to 07.710.06.00-rc1
scsi: megaraid_sas: Introduce various Aero performance modes
scsi: megaraid_sas: Use high IOPS queues based on IO workload
scsi: megaraid_sas: Set affinity for high IOPS reply queues
scsi: megaraid_sas: Enable coalescing for high IOPS queues
scsi: megaraid_sas: Add support for High IOPS queues
scsi: megaraid_sas: Add support for MPI toolbox commands
scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver
scsi: megaraid_sas: RAID1 PCI bandwidth limit algorithm is applicable for only Ventura
scsi: megaraid_sas: megaraid_sas: Add check for count returned by HOST_DEVICE_LIST DCMD
scsi: megaraid_sas: Handle sequence JBOD map failure at driver level
scsi: megaraid_sas: Don't send FPIO to RL Bypass queue
scsi: megaraid_sas: In probe context, retry IOC INIT once if firmware is in fault
scsi: megaraid_sas: Release Mutex lock before OCR in case of DCMD timeout
scsi: megaraid_sas: Call disable_irq from process IRQ poll
scsi: megaraid_sas: Remove few debug counters from IO path
...
To support scenarios which aren't bound to nvmetcli add port scenarios,
which is currently where the nvmet_fc transport invokes the discovery
event callbacks, a syfs attribute is added to lpfc which can be written
to cause an RSCN to be generated for the nport.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This patch updates RSCN receive processing to check for the remote
port being an NVME port, and if so, invoke the nvme_fc callback to
rescan the remote port. The rescan will generate a discovery udev
event.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This patch adds support for the nvmet discovery op. When the callback
routine is called, the driver will call the routine to generate an RSCN
to the port on the other end of the link.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This patch adds general RSCN support:
- The ability to transmit an RSCN to the port on the other end of
the link (regular port if pt2pt, or fabric controller if fabric).
- And general recognition of an RSCN ELS when an ELS is received.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Unlike the legacy I/O path, scsi-mq preallocates a large array to hold
the scatterlist for each request. This static allocation can consume
substantial amounts of memory on modern controllers which support a
large number of concurrently outstanding requests.
To facilitate a switch to a smaller static allocation combined with a
dynamic allocation for requests that need it, we need to make sure all
SCSI drivers handle chained scatterlists correctly.
Convert remaining drivers that directly dereference the scatterlist
array to using the iterator functions.
[mkp: clarified commit message]
Reviewed by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When building powerpc pseries_defconfig or powernv_defconfig:
drivers/scsi/lpfc/lpfc_nvmet.c:224:1: error: unused function
'lpfc_nvmet_get_ctx_for_xri' [-Werror,-Wunused-function]
drivers/scsi/lpfc/lpfc_nvmet.c:246:1: error: unused function
'lpfc_nvmet_get_ctx_for_oxid' [-Werror,-Wunused-function]
These functions are only compiled when CONFIG_NVME_TARGET_FC is enabled.
Use that same condition so there is no more warning. While the fixes commit
did not introduce these functions, it caused these warnings.
Fixes: 4064b27417a7 ("scsi: lpfc: Make some symbols static")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix sparse warnings:
drivers/scsi/lpfc/lpfc_sli.c:115:1: warning: symbol 'lpfc_sli4_pcimem_bcopy' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_sli.c:7854:1: warning: symbol 'lpfc_sli4_process_missed_mbox_completions' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvmet.c:223:27: warning: symbol 'lpfc_nvmet_get_ctx_for_xri' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_nvmet.c:245:27: warning: symbol 'lpfc_nvmet_get_ctx_for_oxid' was not declared. Should it be static?
drivers/scsi/lpfc/lpfc_init.c:75:10: warning: symbol 'lpfc_present_cpu' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fixes gcc '-Wunused-but-set-variable' warnings:
drivers/scsi/lpfc/lpfc_init.c: In function lpfc_setup_cq_lookup:
drivers/scsi/lpfc/lpfc_init.c:9359:30: warning: variable qp set but not used [-Wunused-but-set-variable]
It's not used since commit e70596a60f88 ("scsi: lpfc: Fix poor use of
hardware queues if fewer irq vectors")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use *_pool_zalloc rather than *_pool_alloc followed by memset with 0.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Update lpfc version to 12.2.0.3
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Kernel warnings may be seen with preempt debugging enabled.
Replace smp_processor_id calls with raw_smp_processor_id or cpu information
stored in hdwq structures.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Crashes in scsi_queue_rq or in dma_unmap_direct_sg during BFS when lpfc has
lpfc_enable_bg=1.
lpfc is setting DIX and prot sg after scsi_add_host_with_dma() has been
called. The scsi_host_set_prot() and scsi_host_set_guard() routines need to
be called before scsi_add_host_with_dma().
Revise the calling sequence to set the protection/guard data before calling
scsi_add_host_with_dma().
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
FDMI protocol support registration was not accurately showing nvme
support. The fcponly-path clears the parameter object.
Move the code out of the fcponly code path. Fix the FDMI registration data
to properly check for nvme support. Commonize the manner in which the fdmi
routines set protocol support.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Issuing a LUN reset was resulting in a command failure which then escalated
to a host reset.
The FCP-4 spec allows fcp_rsp_len field to specify the number of valid
bytes of FCP_RSP_INFO, and the value could be 4 or 8. The driver is
allowing only a value of 8, thus it failed the command.
Revise the driver to allow 4 or 8.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While fixing the resources per socket, realized the driver was not using
hardware queues (up to 1 per cpu) if there were fewer interrupt
vectors. The driver was only using the hardware queue assigned to the cpu
with the vector.
Rework the affinity map check to use the additional hardware queue elements
that had been allocated. If the cpu count exceeds the hardware queue count
- share, but choose what is shared with by: hyperthread peer, core peer,
socket peer, or finally similar cpu in a different socket.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver was coded expecting enough hardware queues and interrupt vectors
such that at least there was one per socket. In the case where there were
fewer than sockets, cpus were left unassigned thus null pointers.
Rework the affinity mappings. Map settings for the cpu's that are in the
irq cpu mask. For each cpu not in the mask, map to another cpu that does
have a mask. Choice of the "other" cpu will attempt to map to the same cpu
but differing hyperthread, or cpu within in same core, or cpu within same
socket, or finally cpu in the base socket.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Invalid logical speed is displayed for trunk enabled ports when all ports
are down. Also noted that link speed is incorrectly reported for the units
when links are up.
Current code is returning the logical link speed from the last event from
the adapter. In cases where the last link went down, the link speed in the
event was not valid - meaning that although the links where down the field
had a bogus value.
Rework the event handling to qualify the trunk link state before using the
event speed data.
Also correct units on other areas where the logical link speed was taken
from a link event.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
eq create is leaking mailbox memory if it encounters an error.
rework error path to free the memory.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver unconditionally says fw doesn't support nvme when in
truth it was a driver parameter settings that disabled nvme support.
Rework the code validating nvme support to accurately report what
condition is disabling nvme support. Save state on whether nvme
fw supports nvme in case sysfs attributes change dynamically.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is a race condition with the abort handler declaring a waitq
item on it's stack, followed by a timeout in the abort handler that
has it give up on the abort return to its caller. When the io is
finally aborted and its completion handler called, it references
the waitq element that the abort_handler set up, which is no longer
valid resulting in a deadlock.
Fix by clearing the waitq reference, under lock, when the abort
handler timeout gives up. Have the completion handler validate the
waitq before referencing it.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When queued work is executed posting a new command to the transport
the driver is reporting a null buffer.
The driver had received an ABTS which matched a command that had
been scheduled for delivery to the transport. The driver proceeded
to cancel the command, but the work item was never cancelled.
Fix by cancelling the queued work item. Also turns out the ABTS
response was not properly sending a BA_ACC, so set the flag to
send the ACC.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use-after-free memory overwrite detected. Problem reported
by Ewan Milne at Red Hat after running lpfc target with additional
memory checking enabled.
Race condition when lpfc_nvmet_xmt_ls_rsp_cmp frees the ctxp
memory in interrupt context before lpfc_nvmet_xmt_ls_rsp
clears a field in the ctxp after successfully issuing the wqe.
Remove the unnecessary ctxp write after reposting the rq buffer. The
ctxp->rqb_buffer field is not checked in LS handling after the wqe
is submitted.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reported-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Under heavy load the target stops responding, the drivers aborts
timeout and we start recovery by logging out of the target, but
the target is never logged into again.
In a point-to-point scenario, there were battling PLOGI's. When we
received a PLOGI request after having sent one, the driver cancels
the processing of the original plogi. However, the completion path
of the remaining plogi was coded to skip the reg_rpi that should
be happening on the 2nd plogi.
Correct by adding a simple pt2pt check such that the 2nd plogi isn't
skipped and the reg_login occurs.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Turns out the message change in 12.2.0.1 for unsupported topology
makes the linux driver out of sync with other products.
Revert the message back to the prior content for product consistency.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver currently is relying on firmware to match ABTSs to existing
exchanges. This works fine as long as an exchange has been assigned to the
io and work posted to it. However, for unmapped frames (rxid=0xFFFF), the
driver has yet to assign an xri. The driver was blindly saying it couldn't
match the ABTS and sending the BA_xxx. However, the command frame may have
been in queues waiting on xri's before posting to the nvmet_fc layer. When
xri's became available, the command frame would still be pushed to the
transport and that io would execute, even though the io had been killed by
ABTS. The initiator, seeing the io ABTS'd, would reuse the exchange for a
different io which would be received on the target and pushed up. If the
"zombie" io then came back down and started transmitting, the initiator
would match the oxid and accept erroneous data. Bad things happened.
Add tracking of active exchanges in the target to allow matching of a
received ABTS against active or pending IO requests. If the ABTS is matched
to a pending or active IO, the drive initiates cleanup and conditionally
notifies the transport.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently the driver is notified of new command frame receipt by CQEs. As
part of the CQE processing, the driver upcalls the nvmet_fc transport to
deliver the command. nvmet_fc, as part of receiving the command builds out
a context for it, where one of the first steps is to allocate memory for
the io.
When running with tests that do large ios (1MB), it was found on some
systems, the total number of outstanding I/O's, at 1MB per, completely
consumed the system's memory. Thus additional ios were getting blocked in
the memory allocator. Given that this blocked the lpfc thread processing
CQEs, there were lots of other commands that were received and which are
then held up, and given CQEs are serially processed, the aggregate delays
for an IO waiting behind the others became cummulative - enough so that the
initiator hit timeouts for the ios.
The basic fix is to avoid the direct upcall and instead schedule a work
item for each io as it is received. This allows the cq processing to
complete very quickly, and each io can then run or block on it's own.
However, this general solution hurts latency when there are few ios. As
such, implemented the fix such that the driver watches how many CQEs it has
processed sequentially in one run. As long as the count is below a
threshold, the direct nvmet_fc upcall will be made. Only when the count is
exceeded will it revert to work scheduling.
Given that debug of this showed a surprisingly long delay in cq processing,
the io timer stats were updated to better reflect the processing of the
different points.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Revise a stalled adapter message to also include the number of jobs that
are stalling the thread.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
A race condition resulted in receive buffers being placed in the free list
twice.
Change the locking and handling to check whether the "other" path will be
freeing the entry in a later thread and skip it if it is.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After receiving an unsolicited ABTS (meaning rxid is 0xFFFF), the driver
used the oxid from the initiator to match against a local xri which may
have been allocated for the io. The xri would be the rxid - it's an invalid
check resulting in the command not being matched or erroneously matched.
Change the lookup to use the oxid and the SID to match against received
IO's original values.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Softlockups are seen in low memory situations. They are due to doing
oas_lun allocation with GFP_KERNEL in atomic contexts.
Change the calls to oas_lun to indicate atomic context so that GFP_ATOMIC
is used.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Due to the couple of bug fixes, update lpfc version to 12.2.0.2
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There was a missing qualification of a valid ndlp structure when calling to
send an RRQ for an abort. Add the check.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Many of the exit cases were not releasing the rcu read lock. Corrected the
exit paths.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There were a number of erroneous comments and incorrect older lockdep
checks that were causing a number of warnings.
Resolve the following:
- Inconsistent lock state warnings in lpfc_nvme_info_show().
- Fixed comments and code on sequences where ring lock is now held instead
of hbalock.
- Reworked calling sequences around lpfc_sli_iocbq_lookup(). Rather than
locking prior to the routine and have routine guess on what lock, take
the lock within the routine. The lockdep check becomes unnecessary.
- Fixed comments and removed erroneous hbalock checks.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
CC: Bart Van Assche <bvanassche@acm.org>
Tested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix sparse warning:
drivers/scsi/lpfc/lpfc_init.c:13091:1: warning:
symbol 'lpfc_sli4_oas_verify' was not declared. Should it be static?
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
James Smart