There is a null pointer dereference that can happen in the FOF interrupt
handler.
The driver was not setting up cq->assoc_qp_for sli4_hba->oas_cq.
Initialize cq->assoc_qp before accessing it.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Set lpfc driver revision to 11.4.0.0
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Administrator intervention is currently required to get good numbers
when switching from running latency tests to IOPS tests.
The configured interrupt coalescing values will greatly effect the
results of these tests. Currently, the driver has a single coalescing
value set by values of the module attribute. This patch changes the
driver to support auto-configuration of the coalescing value based on
the total number of outstanding IOs and average number of CQEs processed
per interrupt for an EQ. Values are checked every 5 seconds.
The driver defaults to the automatic selection. Automatic selection can
be disabled by the new lpfc_auto_imax module_parameter.
Older hardware can only change interrupt coalescing by mailbox
command. Newer hardware supports change via a register. The patch
support both.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addressed the following reported defects:
** CID 1411552: Control flow issues (MISSING_BREAK)
/drivers/scsi/lpfc/lpfc_sli.c: 13259 in lpfc_sli4_nvmet_handle_rcqe()
** CID 1411553: Memory - illegal accesses (OVERRUN)
/drivers/scsi/lpfc/lpfc_sli.c: 16218 in lpfc_fc_frame_check()
** CID 1411553: Memory - illegal accesses (OVERRUN)
Overrunning array "lpfc_rctl_names" of 202 8-byte elements at element
index 244 (byte offset 1952) using index "fc_hdr->fh_r_ctl" (which
evaluates to 244).
** CID 1411554: Null pointer dereferences (REVERSE_INULL)
/drivers/scsi/lpfc/lpfc_nvmet.c: 2131 in lpfc_nvmet_unsol_fcp_abort_cmp()
** CID 1411555: Memory - illegal accesses (UNINIT)
/drivers/scsi/lpfc/lpfc_nvmet.c: 180 in lpfc_nvmet_ctxbuf_post()
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
vports cannot login to target.
For vports, lpfc_nodelist is allocated for targets only on completion of
GFF_ID command. Driver checks if lpfc_nodelist exists for target before
sending GFF_ID. So, GFF_ID and PLOGI are not sent.
As mentioned by the comment in lpfc_prep_node_fc4type() routine, do not
send GFF_ID only if this NPortID is previously identified as FCP
target. Send GFF_ID if it is a newly identified remote port from GID_FT
response.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The nvmet driver was rejecting the initiator's PRLI because its reg_rpi
for the PLOGI was still outstanding. The initiator would resend the
PRLI without delay and get the same answer. The PRLI retries would
exhaust causing the nvme initiator to set the nvmet ndlp to UNMAPPED.
The driver's lpfc_els_retry handler did not have a policy for an LS_RJT
with explanation CMD_IN_PROGRESS for PRLI or NVME_PRLI. This caused the
delay to remain at 0 but retry set 1.
Fix: When the ELS response is LS_RJT, TPC and the command was PRLI or
NVME_PRLI, just set the delay to 1000 mS to get a 1 second delay on the
PRLI retry. This was enough to allow the REG_RPI to complete at the
target.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Kernel panic when log_verbose is set to 0xffffffff
phba->pport is dereferenced before it is initialized
Fix: Do not dereference phba->pport if it is NULL
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
System panic with general protection fault during driver load
The driver uses a static array sli4_hba.handler_name to store the irq
handler names. If the io_channel_irqs exceeds the pre-allocated size
(32+1), then the driver will overwrite other fields of sli4_hba.
Fix: Dynamically allocate handler_name.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Null pointer dereference when BFS VM is powered off
The driver incorrectly uses sli3_ring on SLI-4 adapters
Use the correct ring structure based on sli_rev
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Tested-by: Raphael Silva <raphasil@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
On hbacmd reset failure, observing wrong string "nline" in kernel log.
On failure, non negative value (1) is returned from sysfs store
routine. It is interpreted as count by kernel and store routine is
called again with the remaining characters as input.
Fix: Return negative error code (-EIO) in case of failure.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
NVME FC counters don't reflect actual results
Since counters are not atomic, or protected by a lock, the values often
get screwed up.
Make them atomic, like NVMET. Fix up sysfs and debugfs display
accordingly Added Outstanding IOs to stats display
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Observing lpfc port down after issuing hbacmd reset command
Failure in posting SGL buffers. If there is only one SGL buffer and rrq
is valid for its XRI, we are rightly returning NULL but not adding the
buffer back to the SGL list. So, number of buffers become less than
total count and repost fails during reset.
Add SGL buffer back to list before returning NULL.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When unloading the driver, the NVMET driver would wait the full 30
seconds for its UNMAPPED initiator node to get removed before continuing
with the unload process. NVMEI worked correctly.
For each rport put into UNMAPPED or MAPPED state by NVMET, the driver
puts a reference on the NDLP. The difference is that NVMEI has a
unregister call for its rports and the extra reference is removed in the
unregister process. For NVMET, the driver has to remove the reference
explicitly when dropping out of UNMAPPED or MAPPED because there is no
unregister call.
Add a call to lpfc_nlp_put on the ndlp when NVMET and the old state was
UNMAPPED or MAPPED.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Lun Priority level shown as NA
Remote port is not getting registered for nameserver and fdmi. Due to
which dfc SendCTPassThru cmd is failing.
Made changes to register the remote port for both.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Inconsistent error messages and context state checks
Context state sanity checks were not accurate or inconsistent in the
code paths.
Separated LS context states from FCP.
Added and modified context state sanity checks.
Use context state to determine if a sol or unsol ABORT is needed.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While debugging Devloss and recovery, debugfs and sysfs were found to
not show the NVME port roles consistently.
The port role FC_PORT_ROLE_NVME_DISCOVERY was added with the devloss
bringup and the other issues were just oversight.
Add NVME Target and DISCSRVC to debugfs nodeinfo and sysfs nvme info
handlers. The full port role was added to the NVME data only not the
generic nodelist.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
As the devloss API was implemented in the nvmei driver, an evaluation of
the nvme transport and the lpfc driver showed dual management of the
rports. This creates a bug possibility when the thread count and SAN
size increases.
The nvmei driver code was based on a very early transport and was not
revisited until the devloss API was introduced.
Remove the listhead in the driver's rport data structure and the
listhead in the driver's lport data structure. Remove all rport_list
traversal. Convert the driver to use the nrport (nvme rport) pointer
that is now NULL or nonNULL depending on a devloss action. Convert
debugfs and nvme_info in sysfs to use the fc_nodes list in the vport.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add nvme initiator devloss support
The existing implementation was based on no devloss behavior in the
transport (e.g. immediate teardown) so code didn't properly handle
delayed nvme rport device unregister calls. In addition, the driver was
not correctly cycling the rport port role for each
register-unregister-reregister process.
This patch does the following:
Rework the code to properly handle rport device unregister calls and
potential re-allocation of the remoteport structure if the port comes
back in under dev_loss_tmo.
Correct code that was incorrectly cycling the rport port role for each
register-unregister-reregister process.
Prep the code to enable calling the nvme_fc transport api to dynamically
update dev_loss_tmo when the scsi sysfs interface changes it.
Memset the rpinfo structure in the registration call to enforce "accept
nvme transport defaults" in the registration call. Driver parameters do
influence the dev_loss_tmo transport setting dynamically.
Simplifies the register function: the driver was incorrectly searching
its local rport list to determine resume or new semantics, which is not
valid as the transport already handles this. The rport was resumed if
the rport handed back matches the ndlp->nrport pointer. Otherwise,
devloss fired and the ndlp's nrport is NULL.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
functions lpfc_nvmet_cleanup_io_context and lpfc_nvmet_setup_io_context
can be made static as they do not need to be in global scope.
Cleans up sparse warnings:
"warning: symbol 'lpfc_nvmet_cleanup_io_context' was not declared.
Should it be static?"
"warning: symbol 'lpfc_nvmet_setup_io_context' was not declared.
Should it be static?"
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Trivial fix to spelling mistake in debugfs message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This is a set of user visible fixes (excepting one format string
change). Four of the qla2xxx fixes only affect the firmware dump
path, but it's still important to the enterprise. The rest are
various NULL pointer crash conditions or outright driver hangs.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of user visible fixes (excepting one format string
change).
Four of the qla2xxx fixes only affect the firmware dump path, but it's
still important to the enterprise. The rest are various NULL pointer
crash conditions or outright driver hangs"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: cxgb4i: libcxgbi: in error case RST tcp conn
scsi: scsi_debug: Avoid PI being disabled when TPGS is enabled
scsi: qla2xxx: Fix extraneous ref on sp's after adapter break
scsi: lpfc: prevent potential null pointer dereference
scsi: lpfc: Avoid NULL pointer dereference in lpfc_els_abort()
scsi: lpfc: nvmet_fc: fix format string
scsi: qla2xxx: Fix crash due to NULL pointer dereference of ctx
scsi: qla2xxx: Fix mailbox pointer error in fwdump capture
scsi: qla2xxx: Set bit 15 for DIAG_ECHO_TEST MBC
scsi: qla2xxx: Modify T262 FW dump template to specify same start/end to debug customer issues
scsi: qla2xxx: Fix crash due to mismatch mumber of Q-pair creation for Multi queue
scsi: qla2xxx: Fix NULL pointer access due to redundant fc_host_port_name call
scsi: qla2xxx: Fix recursive loop during target mode configuration for ISP25XX leaving system unresponsive
scsi: bnx2fc: fix race condition in bnx2fc_get_host_stats()
scsi: qla2xxx: don't disable a not previously enabled PCI device
Null check at line 966: if (ndlp) {, implies that ndlp might be NULL.
Functions lpfc_nlp_set_state() and lpfc_issue_els_prli() dereference
pointer ndlp. Include these function calls inside the IF block that
tests pointer ndlp.
Addresses-Coverity-ID: 1401856
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We might have a NULL pring in lpfc_els_abort(), for example on error
recovery path, since queues are destroyed during error recovery
mechanism.
In this case, we should just drop the abort since the queues will be
recreated anyway. This patch just verifies for NULL pointer and stop the
abortion of the queue in case of a NULL pring.
Also, this patch converts return type of lpfc_els_abort() from int to
void, since it's not checked anywhere.
Reported-by: Harsha Thyagaraja <hathyaga@in.ibm.com>
Reported-by: Naresh Bannoth <nbannoth@in.ibm.com>
Tested-by: Raphael Silva <raphasil@linux.vnet.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The lpfc_nvmeio_data() tracing helper always takes a format string and
three additional arguments. The latest caller has a format string with
only two integer arguments, causing this harmless warning:
drivers/scsi/lpfc/lpfc_nvmet.c: In function 'lpfc_nvmet_xmt_fcp_release':
drivers/scsi/lpfc/lpfc_nvmet.c:802:25: error: too many arguments for format [-Werror=format-extra-args]
lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d\n", ctxp->oxid,
We could add a dummy argument here, but it seems reasonable to print
the 'abort' flag as the third argument.
Fixes: 19b58d9473 ("nvmet_fc: add req_release to lldd api")
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 is quite a big update because it includes a rework of the lpfc
driver to separate the NVMe part from the FC part. The reason for
doing this is because two separate trees (the nvme and scsi trees
respectively) want to update the individual components and this
separation will prevent a really nasty cross tree entanglement by the
time we reach the next merge window. The rest of the fixes are the
usual minor sort with no significant security implications.
Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is quite a big update because it includes a rework of the lpfc
driver to separate the NVMe part from the FC part.
The reason for doing this is because two separate trees (the nvme and
scsi trees respectively) want to update the individual components and
this separation will prevent a really nasty cross tree entanglement by
the time we reach the next merge window.
The rest of the fixes are the usual minor sort with no significant
security implications"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (25 commits)
scsi: zero per-cmd private driver data for each MQ I/O
scsi: csiostor: fix use after free in csio_hw_use_fwconfig()
scsi: ufs: Clean up some rpm/spm level SysFS nodes upon remove
scsi: lpfc: fix build issue if NVME_FC_TARGET is not defined
scsi: lpfc: Fix NULL pointer dereference during PCI error recovery
scsi: lpfc: update version to 11.2.0.14
scsi: lpfc: Add MDS Diagnostic support.
scsi: lpfc: Fix NVMEI's handling of NVMET's PRLI response attributes
scsi: lpfc: Cleanup entry_repost settings on SLI4 queues
scsi: lpfc: Fix debugfs root inode "lpfc" not getting deleted on driver unload.
scsi: lpfc: Fix NVME I+T not registering NVME as a supported FC4 type
scsi: lpfc: Added recovery logic for running out of NVMET IO context resources
scsi: lpfc: Separate NVMET RQ buffer posting from IO resources SGL/iocbq/context
scsi: lpfc: Separate NVMET data buffer pool fir ELS/CT.
scsi: lpfc: Fix NMI watchdog assertions when running nvmet IOPS tests
scsi: lpfc: Fix NVMEI driver not decrementing counter causing bad rport state.
scsi: lpfc: Fix nvmet RQ resource needs for large block writes.
scsi: lpfc: Adding additional stats counters for nvme.
scsi: lpfc: Fix system crash when port is reset.
scsi: lpfc: Fix used-RPI accounting problem.
...
Pull block fixes from Jens Axboe:
"A small collection of fixes that should go into this cycle.
- a pull request from Christoph for NVMe, which ended up being
manually applied to avoid pulling in newer bits in master. Mostly
fibre channel fixes from James, but also a few fixes from Jon and
Vijay
- a pull request from Konrad, with just a single fix for xen-blkback
from Gustavo.
- a fuseblk bdi fix from Jan, fixing a regression in this series with
the dynamic backing devices.
- a blktrace fix from Shaohua, replacing sscanf() with kstrtoull().
- a request leak fix for drbd from Lars, fixing a regression in the
last series with the kref changes. This will go to stable as well"
* 'for-linus' of git://git.kernel.dk/linux-block:
nvmet: release the sq ref on rdma read errors
nvmet-fc: remove target cpu scheduling flag
nvme-fc: stop queues on error detection
nvme-fc: require target or discovery role for fc-nvme targets
nvme-fc: correct port role bits
nvme: unmap CMB and remove sysfs file in reset path
blktrace: fix integer parse
fuseblk: Fix warning in super_setup_bdi_name()
block: xen-blkback: add null check to avoid null pointer dereference
drbd: fix request leak introduced by locking/atomic, kref: Kill kref_sub()
fix build issue if NVME_FC_TARGET is not defined. noop the code. The
code will never be invoked if target mode is not enabled.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Recent commit on patchset "lpfc updates for 11.2.0.14" fixed an issue
about dereferencing a NULL pointer on port reset. The specific commit,
named "lpfc: Fix system crash when port is reset.", is missing a check
against NULL pointer on lpfc_els_flush_cmd() though.
Since we destroy the queues on adapter resets, like in PCI error
recovery path, we need the validation present on this patch in order to
avoid a NULL pointer dereference when trying to flush commands of ELS
wq, after it has been destroyed (which would lead to a kernel oops).
Tested-by: Raphael Silva <raphasil@linux.vnet.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Change driver version to 11.2.0.14.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Added code to support Cisco MDS loopback diagnostic. The diagnostics run
various loopbacks including one which loops-back frame through the
driver.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Code review of NVMEI's FC_PORT_ROLE_NVME_DISCOVERY looked wrong.
Discussions with storage architecture team clarified NVMEI's audit of
the PRLI response port roles. Following up discussion with code review
showed a few minor corrections were required - especially in
anticipation of NVME auto discovery.
During PRLI, NVMEI should sent prli_init - which it it does. NVMET
should send prli_tgt and prli_disc - which it does. When NVMEI receives
a PRLI Response now, it audits the incoming target bits and stores the
attributes in the corresponding NDLP. Later, when NVMEI registers the
NVME rport, it uses the stored ndlp attributes to set the rport
port_roles correctly.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Too many work items being processed in IRQ context take a lot of CPU
time and cause problems.
With a recent change, we get out of the ISR after hitting entry_repost
work items on a queue. However, the actual values for entry repost are
still high. EQ is 128 and CQ is 128, this could translate into
processing 128 * 128 (16384) work items under IRQ context.
Set entry_repost in the actual queue creation routine now. Limit EQ
repost to 8 and CQ repost to 64 to further limit the amount of time
spent in the IRQ.
Fix fof IRQ routines as well.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When unloading and reloading the driver, the driver fails to recreate
the lpfc root inode in the debugfs tree.
The driver is incorrectly removing the lpfc root inode in
lpfc_debugfs_terminate in the first driver instance that unloads and
then sets the lpfc_debugfs_root global parameter to NULL. When the
final driver instance unloads, the debugfs calls quietly ignore the
remove on a NULL pointer. The bug is that the debugfs_remove call
returns void so the driver doesn't know to correctly set the global
parameter to NULL.
Base the debugfs_remove of the lpfc_debugfs_root parameter on
lpfc_debugfs_hba_count because this parameter tracks the fnX instance
tracked per driver instance.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When the driver send the RPA command, it does not send supported FC4
Type NVME to the management server.
Encode NVME (type x28) in the AttribEntry in the RPA command.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Previous logic would just drop the IO.
Added logic to queue the IO to wait for an IO context resource from an
IO thats already in progress.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently IO resources are mapped 1 to 1 with RQ buffers posted
Added logic to separate RQE buffers from IO op resources
(sgl/iocbq/context). During initialization, the driver will determine
how many SGLs it will allocate for NVMET (based on what the firmware
reports) and associate a NVMET IOCBq and NVMET context structure with
each one.
Now that hdr/data buffers are immediately reposted back to the RQ, 512
RQEs for each MRQ is sufficient. Also, since NVMET data buffers are now
128 bytes, lpfc_nvmet_mrq_post is not necessary anymore as we will
always post the max (512) buffers per NVMET MRQ.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Using 2048 byte buffer and onle 128 bytes is needed.
Create nee LFPC_NVMET_DATA_BUF_SIZE define to use for NVMET RQ/MRQs.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After running IOPS test for 30 second we get kernel:NMI watchdog:
Watchdog detected hard LOCKUP on cpu 0
The driver is speend too much time in its ISR.
In ISR EQ and CQ processing routines, if we hit the entry_repost numbers
of EQE/CQEs just break out of the routine as opposed to hitting the
doorbell with NOARM and continue processing.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
During driver boot, a latency in the NVMET driver side causes the
incoming NVMEI PRLI to get rejected by the NVMET driver. When this
happens, the NVMEI driver runs out of PRLI retries. Bouncing the link
does not fix the situation.
If the NVMEI driver decides, on PRLI completion failures, to retry the
PRLI, always decrement the fc4_prli_sent counter. This allows the PRLI
completion to resolve to UNMAPPED when NVMET rejects the PRLI.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Large block writes to the nvme target were failing because the default
number of RQs posted was insufficient.
Expand the NVMET RQs to 2048 RQEs and ensure a minimum of 512 RQEs are
posted, no matter how many MRQs are configured.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
More debug messages added for nvme statistics.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The driver panic when using the els_wq during port reset.
Check for NULL els_wq before dereferencing.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
With 255 vports created a link trasition can casue a crash.
When going through discovery after a link bounce the driver is using
rpis before the cmd FCOE_POST_HDR_TEMPLATES completes. By doing that the
next rpi bumps the rpi range out of the boundary.
The fix it to increment the next_rpi only when the
FCOE_POST_HDR_TEMPLATE succeeds.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
I believe there is a typo on the wq destroy of els_wq, currently the
driver is checking if els_cq is not null and I think this should be a
check on els_wq instead.
Detected by CoverityScan, CID#1411629 ("Copy-paste error")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is a double lock bug here so this will deadlock instead of
unlocking.
Fixes: 1c5b12f763 ("Fix implicit logo and RSCN handling for NVMET")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
To select the appropriate shost template, the driver is issuing a
mailbox command to retrieve the wwn. Turns out the sending of the
command precedes the reset of the function. On SLI-4 adapters, this is
inconsequential as the mailbox command location is specified by dma via
the BMBX register. However, on SLI-3 adapters, the location of the
mailbox command submission area changes. When the function is first
powered on or reset, the cmd is submitted via PCI bar memory. Later the
driver changes the function config to use host memory and DMA. The
request to start a mailbox command is the same, a simple doorbell write,
regardless of submission area. So.. if there has not been a boot driver
run against the adapter, the mailbox command works as defaults are
ok. But, if the boot driver has configured the card and, and if no
platform pci function/slot reset occurs as the os starts, the mailbox
command will fail. The SLI-3 device will use the stale boot driver dma
location. This can cause PCI eeh errors.
Fix is to reset the sli-3 function before sending the mailbox command,
thus synchronizing the function/driver on mailbox location.
Note: The fix uses routines that are typically invoked later in the call
flow to reset the sli-3 device. The issue in using those routines is
that the normal (non-fix) flow does additional initialization, namely
the allocation of the pport structure. So, rather than significantly
reworking the initialization flow so that the pport is alloc'd first,
pointer checks are added to work around it. Checks are limited to the
routines invoked by a sli-3 adapter (s3 routines) as this fix/early call
is only invoked on a sli3 adapter. Nothing changes post the
fix. Subsequent initialization, and another adapter reset, still occur -
both on sli-3 and sli-4 adapters.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Fixes: 96418b5e2c ("scsi: lpfc: Fix eh_deadline setting for sli3 adapters.")
Cc: stable@vger.kernel.org # v4.11+
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Christoph writes:
"A couple more updates for 4.12. The biggest pile is fc and lpfc
updates from James, but there are various small fixes and cleanups as
well."
Fixes up a few merge issues, and also a warning in
lpfc_nvmet_rcv_unsol_abort() if CONFIG_NVME_TARGET_FC isn't enabled.
Signed-off-by: Jens Axboe <axboe@fb.com>
lpfc was changing the private pointer that is set/maintained by
the nvme_fc transport. This caused two issues: a) the transport, on
teardown may erroneous attempt to free whatever address was set;
and b) lfpc uses any value set in lpfc_nvme_fcp_abort() and
assumes its a valid io request.
Correct issue by properly defining a context structure for lpfc.
Lpfc also updated to clear the private context structure on io
completion.
Since this bug caused scrutiny of the way lpfc moves local request
structures between lists, also cleaned up list_del()'s to
list_del_inits()'s.
This is a nvme-specific bug. The patch was cut against the
linux-block tree, for-4.12/block tree. It should be pulled in through
that tree.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
