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path: root/drivers/scsi/lpfc
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2021-10-20scsi: lpfc: Revert LOG_TRACE_EVENT back to LOG_INIT prior to ↵James Smart
driver_resource_setup() In cases when lpfc_enable_pci_dev() fails, lpfc_printf_log() with LOG_TRACE_EVENT set will call lpfc_dmp_dbg() which uses the phba->port_list_lock. However, phba->port_list_lock does not get initialized until lpfc_setup_driver_resource_phase1(). Thus, any initialization routine with LOG_TRACE_EVENT log message prior to lpfc_setup_driver_resource_phase1() will crash. Revert LOG_TRACE_EVENT back to LOG_INIT for all log messages in routines prior to lpfc_setup_driver_resource_phase1(). Link: https://lore.kernel.org/r/20211020211417.88754-2-jsmart2021@gmail.com CC: Zheyu Ma <zheyuma97@gmail.com> Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-18block: move elevator.h to block/Christoph Hellwig
Except for the features passed to blk_queue_required_elevator_features, elevator.h is only needed internally to the block layer. Move the ELEVATOR_F_* definitions to blkdev.h, and the move elevator.h to block/, dropping all the spurious includes outside of that. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20210920123328.1399408-13-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-10-16scsi: lpfc: Switch to attribute groupsBart Van Assche
struct device supports attribute groups directly but does not support struct device_attribute directly. Hence switch to attribute groups. Link: https://lore.kernel.org/r/20211012233558.4066756-28-bvanassche@acm.org Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-16scsi: lpfc: Call scsi_done() directlyBart Van Assche
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-47-bvanassche@acm.org Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-12Merge branch '5.15/scsi-fixes' into 5.16/scsi-stagingMartin K. Petersen
Merge the 5.15/scsi-fixes branch into the staging tree to resolve UFS conflict reported by sfr. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-10-04scsi: lpfc: Fix memory overwrite during FC-GS I/O abort handlingJames Smart
When an FC-GS I/O is aborted by lpfc, the driver requires a node pointer for a dereference operation. In the abort I/O routine, the driver miscasts a context pointer to the wrong data type and overwrites a single byte outside of the allocated space. This miscast is done in the abort I/O function handler because the handler works on both FC-GS and FC-LS commands. However, the code neglected to get the correct job location for the node. Fix this by acquiring the necessary node pointer from the correct job structure depending on the I/O type. Link: https://lore.kernel.org/r/20211004231210.35524-1-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-28scsi: lpfc: Add support for optional PLDV handlingJames Smart
At adapter attachment or SLI port initialization, read the SLIPORT_STATUS register to check for pldv_enable. If found, the driver will perform a PCIe configuration space write when attaching to an SLI port instance that is an LPe32000 series adapter. Link: https://lore.kernel.org/r/20210927183518.22130-1-jsmart2021@gmail.com Co-developed-by: Nigel Kirkland <nkirkland2304@gmail.com> Signed-off-by: Nigel Kirkland <nkirkland2304@gmail.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-28scsi: lpfc: Return NULL rather than a plain 0 integerColin Ian King
Function lpfc_sli4_perform_vport_cvl() returns a pointer to struct lpfc_nodelist so returning a plain 0 integer isn't good practice. Fix this by returning a NULL instead. Link: https://lore.kernel.org/r/20210925224113.183040-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-28scsi: lpfc: Fix a function name in commentsCai Huoqing
Use dma_map_sg() instead of pci_map_sg() in comments. Link: https://lore.kernel.org/r/20210925125324.1760-3-caihuoqing@baidu.com Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-22scsi: lpfc: Fix mailbox command failure during driver initializationJames Smart
Contention for the mailbox interface may occur during driver initialization (immediately after a function reset), between mailbox commands initiated via ioctl (bsg) and those driver requested by the driver. After setting SLI_ACTIVE flag for a port, there is a window in which the driver will allow an ioctl to be initiated while the adapter is initializing and issuing mailbox commands via polling. The polling logic then gets confused. Correct by having thread setting SLI_ACTIVE spot an active mailbox command and allow it complete before proceeding. Link: https://lore.kernel.org/r/20210921143008.64212-1-jsmart2021@gmail.com Co-developed-by: Nigel Kirkland <nkirkland2304@gmail.com> Signed-off-by: Nigel Kirkland <nkirkland2304@gmail.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-22scsi: lpfc: Fix gcc -Wstringop-overread warning, againArnd Bergmann
I fixed a stringop-overread warning earlier this year, now a second copy of the original code was added and the warning came back: drivers/scsi/lpfc/lpfc_attr.c: In function 'lpfc_cmf_info_show': drivers/scsi/lpfc/lpfc_attr.c:289:25: error: 'strnlen' specified bound 4095 exceeds source size 24 [-Werror=stringop-overread] 289 | strnlen(LPFC_INFO_MORE_STR, PAGE_SIZE - 1), | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fix it the same way as the other copy. Link: https://lore.kernel.org/r/20210920095628.1191676-1-arnd@kernel.org Fixes: ada48ba70f6b ("scsi: lpfc: Fix gcc -Wstringop-overread warning") Fixes: 74a7baa2a3ee ("scsi: lpfc: Add cmf_info sysfs entry") Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-22scsi: lpfc: Use correct scnprintf() limitDan Carpenter
The limit should be "PAGE_SIZE - len" instead of "PAGE_SIZE". We're not going to hit the limit so this fix will not affect runtime. Link: https://lore.kernel.org/r/20210916132331.GE25094@kili Fixes: 5b9e70b22cc5 ("scsi: lpfc: raise sg count for nvme to use available sg resources") Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-22scsi: lpfc: Fix sprintf() overflow in lpfc_display_fpin_wwpn()Dan Carpenter
This scnprintf() uses the wrong limit. It should be "LPFC_FPIN_WWPN_LINE_SZ - len" instead of LPFC_FPIN_WWPN_LINE_SZ. Link: https://lore.kernel.org/r/20210916132251.GD25094@kili Fixes: 428569e66fa7 ("scsi: lpfc: Expand FPIN and RDF receive logging") Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Update lpfc version to 14.0.0.2James Smart
Update lpfc version to 14.0.0.2. Link: https://lore.kernel.org/r/20210910233159.115896-15-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Improve PBDE checks during SGL processingJames Smart
The PBDE feature, setting payload buffer address explicitly in the WQE so it doesn't have to be fetched from the SGL, only makes sense when there is a single buffer for the I/O. When there are multiple buffers it actually hurts performance as the SGL subsequently has to be fetched. Rework the SGL logic to only use PBDE when a single buffer. Link: https://lore.kernel.org/r/20210910233159.115896-14-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Zero CGN stats only during initial driver load and stat resetJames Smart
Currently congestion management framework results are cleared whenever the framework settings changed (such as it being turned off then back on). This unfortunately means prior stats, rolled up to higher time windows lose meaning. Change such that stats are not cleared. Thus they pause and resume with prior values still being considered. Link: https://lore.kernel.org/r/20210910233159.115896-13-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix I/O block after enabling managed congestion modeJames Smart
If the congestion management framework dynamically enables, it may do so while I/O is in flight. The updates of cmf info due to inflight I/O completing may happen before values have been initialized. Fix by ensure cmf_max_bytes_per_interval is initialized when checking bandwidth utilization for SCSI layer blocking. Link: https://lore.kernel.org/r/20210910233159.115896-12-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Adjust bytes received vales during cmf timer intervalJames Smart
The newly added congestion mgmt framework is seeing unexpected congestion FPINs and signals. In analysis, time values given to the adapter are not at hard time intervals. Thus the drift vs the transfer count seen is affecting how the framework manages things. Adjust counters to cover the drift. Link: https://lore.kernel.org/r/20210910233159.115896-11-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix EEH support for NVMe I/OJames Smart
Injecting errors on the PCI slot while the driver is handling NVMe I/O will cause crashes and hangs. There are several rather difficult scenarios occurring. The main issue is that the adapter can report a PCI error before or simultaneously to the PCI subsystem reporting the error. Both paths have different entry points and currently there is no interlock between them. Thus multiple teardown paths are competing and all heck breaks loose. Complicating things is the NVMs path. To a large degree, I/O was able to be shutdown for a full FC port on the SCSI stack. But on NVMe, there isn't a similar call. At best, it works on a per-controller basis, but even at the controller level, it's a controller "reset" call. All of which means I/O is still flowing on different CPUs with reset paths expecting hw access (mailbox commands) to execute properly. The following modifications are made: - A new flag is set in PCI error entrypoints so the driver can track being called by that path. - An interlock is added in the SLI hw error path and the PCI error path such that only one of the paths proceeds with the teardown logic. - RPI cleanup is patched such that RPIs are marked unregistered w/o mbx cmds in cases of hw error. - If entering the SLI port re-init calls, a case where SLI error teardown was quick and beat the PCI calls now reporting error, check whether the SLI port is still live on the PCI bus. - In the PCI reset code to bring the adapter back, recheck the IRQ settings. Different checks for SLI3 vs SLI4. - In I/O completions, that may be called as part of the cleanup or underway just before the hw error, check the state of the adapter. If in error, shortcut handling that would expect further adapter completions as the hw error won't be sending them. - In routines waiting on I/O completions, which may have been in progress prior to the hw error, detect the device is being torn down and abort from their waits and just give up. This points to a larger issue in the driver on ref-counting for data structures, as it doesn't have ref-counting on q and port structures. We'll do this fix for now as it would be a major rework to be done differently. - Fix the NVMe cleanup to simulate NVMe I/O completions if I/O is being failed back due to hw error. - In I/O buf allocation, done at the start of new I/Os, check hw state and fail if hw error. Link: https://lore.kernel.org/r/20210910233159.115896-10-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix FCP I/O flush functionality for TMF routinesJames Smart
A prior patch inadvertently caused lpfc_sli_sum_iocb() to exclude counting of outstanding aborted I/Os and ABORT IOCBs. Thus, lpfc_reset_flush_io_context() called from any TMF routine does not properly wait to flush all outstanding FCP IOCBs leading to a block layer crash on an invalid scsi_cmnd->request pointer. kernel BUG at ../block/blk-core.c:1489! RIP: 0010:blk_requeue_request+0xaf/0xc0 ... Call Trace: <IRQ> __scsi_queue_insert+0x90/0xe0 [scsi_mod] blk_done_softirq+0x7e/0x90 __do_softirq+0xd2/0x280 irq_exit+0xd5/0xe0 do_IRQ+0x4c/0xd0 common_interrupt+0x87/0x87 </IRQ> Fix by separating out the LPFC_IO_FCP, LPFC_IO_ON_TXCMPLQ, LPFC_DRIVER_ABORTED, and CMD_ABORT_XRI_CN || CMD_CLOSE_XRI_CN checks into a new lpfc_sli_validate_fcp_iocb_for_abort() routine when determining to build an ABORT iocb. Restore lpfc_reset_flush_io_context() functionality by including counting of outstanding aborted IOCBs and ABORT IOCBs in lpfc_sli_sum_iocb(). Link: https://lore.kernel.org/r/20210910233159.115896-9-jsmart2021@gmail.com Fixes: e1364711359f ("scsi: lpfc: Fix illegal memory access on Abort IOCBs") Cc: <stable@vger.kernel.org> # v5.12+ Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix NVMe I/O failover to non-optimized pathJames Smart
Currently, we hold off unregistering with NVMe transport layer until GID_FT or ADISC completes upon receipt of RSCN. In the ADISC discovery routine, for nodes not found in the GID_FT response, the nodes are unregistered from the SCSI transport but not UNREG_RPI'd. Meaning outstanding WQEs continue to be outstanding and were not failed back to the OS. If an NVMe device, this mean there wasn't initial termination of the I/Os so they could be issued on a different NVMe path. Fix by unregistering the RPI so that I/O is cancelled. Link: https://lore.kernel.org/r/20210910233159.115896-8-jsmart2021@gmail.com Fixes: 0614568361b0 ("scsi: lpfc: Delay unregistering from transport until GIDFT or ADISC completes") Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Don't remove ndlp on PRLI errors in P2P modeJames Smart
In pt-2-pt mode, the initiator does not log into the target after a PRLI error. In pt-2-pt mode, the target responded to the PRLI by sending a LOGO. The LOGO causes all ELS and I/Os to be aborted. This caused the PRLI to fail. The PRLI completion path caused the discovery node to be dropped to avoid being stick in an UNUSED (not logged in) state. As the node was dropped there is no retry of the login and as it is pt-2-pt, there is no RSCN to retrigger discovery. Thus the other end is not seen by the OS. Fix by ensuring the discovery node is not dropped if connecting pt-2-pt. This will cause PLOGI to be retried. Link: https://lore.kernel.org/r/20210910233159.115896-7-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix rediscovery of tape device after LIPJames Smart
On link up and node discovery, a remote port is registered with the SCSI transport and the driver sets fc4_xpt_flags to track transport registration. A link down event causes the driver to deregister with the SCSI transport, starting the devloss timer, and calls a local unreg routine to clear the login state. Part of the login state is the fc4_xpt_flags. However, with tape devices that support sequence level error recovery, which wants to preserve the login, the local unreg routine is skipped, thus the flags aren't cleared. A subsequent link up, ADISC is performed and the lpfc_nlp_reg_node() routine is called. As the fc4_xpt_flags is not clear, it's believed the node is already registered with the transport. Unfortunately, the registration was already terminated. Eventually the devloss tmo timer expires and tears down the device. Fix by ensuring the tape device, known by the ADISC flag, is always unregistered if the link drops. Link: https://lore.kernel.org/r/20210910233159.115896-6-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix hang on unload due to stuck fport nodeJames Smart
A test scenario encountered an unload hang while an FLOGI ELS was in flight when a link down condition occurred. The driver fails unload as it never releases the fport node. For most nodes, when the link drops, devloss tmo is started and the timeout will cause the final node release. For the Fport, as it has not yet registered with the SCSI transport, there is no devloss timer to be started, so there is no final release. Additionally, the link down sequence causes ABORTS to be issued for pending ELS's. The completions from the ABORTS perform the release of node references. However, as the adapter is being reset to be unloaded, those completions will never occur. Fix by the following: - In the ELS cleanup, recognize when unloading and place the ELS's on a different list that immediately cleans up/completes the ELS's. It's recognized that this condition primarily affects only the fport, with other ports having normal clean up logic that handles things. - Resolve the devloss issue by, when cleaning up nodes on after link down, recognizing when the fabric node does not have a completed state (its state is UNUSED) and removing a reference so the node can delete after the ELS reference is released. Link: https://lore.kernel.org/r/20210910233159.115896-5-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix premature rpi release for unsolicited TPLS and LS_RJTJames Smart
A test scenario has a target issuing a TPLS after accepting the driver's PRLI. TPLS is not supported by the driver so it rejects the ELS. However, the reject was only happening on the primary N_Port. If the TPLS was to a NPIV vport, not only would it reject the ELS, but it would act on the TPLS, starting devloss, then unregister from the SCSI transport and release the node. When devloss expired, it would access the node again and cause a page faul. Fix by altering the NPIV code to recognize that a correctly registered node can reject unsolicited ELS I/O and to not unregister with the SCSI transport and tear the node down. Add a check of the fc4_xpt_flags so that only a zero value allows the unreg and teardown. Link: https://lore.kernel.org/r/20210910233159.115896-4-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Don't release final kref on Fport node while ABTS outstandingJames Smart
In a rarely executed path, FLOGI failure, there is a refcounting error. If FLOGI completed with an error, typically a timeout, the initial completion handler would remove the job reference. However, the job completion isn't the actual end of the job/exchange as the timeout usually initiates an ABTS, and upon that ABTS completion, a final completion is sent. The driver removes the reference again in the final completion. Thus the imbalance. In the buggy cases, if there was a link bounce while the delayed response is outstanding, the fport node may be referenced again but there was no additional reference as it is already present. The delayed completion then occurs and removes the last reference freeing the node and causing issues in the link up processed that is using the node. Fix this scenario by removing the snippet that removed the reference in the initial FLOGI completion. The bad snippet was poorly trying to identify the FLOGI as OK to do so by realizing the node was not registered with either SCSI or NVMe transport. Link: https://lore.kernel.org/r/20210910233159.115896-3-jsmart2021@gmail.com Fixes: 618e2ee146d4 ("scsi: lpfc: Fix FLOGI failure due to accessing a freed node") Cc: <stable@vger.kernel.org> # v5.13+ Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-14scsi: lpfc: Fix list_add() corruption in lpfc_drain_txq()James Smart
When parsing the txq list in lpfc_drain_txq(), the driver attempts to pass the requests to the adapter. If such an attempt fails, a local "fail_msg" string is set and a log message output. The job is then added to a completions list for cancellation. Processing of any further jobs from the txq list continues, but since "fail_msg" remains set, jobs are added to the completions list regardless of whether a wqe was passed to the adapter. If successfully added to txcmplq, jobs are added to both lists resulting in list corruption. Fix by clearing the fail_msg string after adding a job to the completions list. This stops the subsequent jobs from being added to the completions list unless they had an appropriate failure. Link: https://lore.kernel.org/r/20210910233159.115896-2-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-13scsi: lpfc: Remove unneeded variableChi Minghao
Fix the following coccicheck REVIEW: ./drivers/scsi/lpfc/lpfc_scsi.c:1498:9-12 REVIEW Unneeded variable Link: https://lore.kernel.org/r/20210831114058.17817-1-lv.ruyi@zte.com.cn Reported-by: Zeal Robot <zealci@zte.com.cm> Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Chi Minghao <chi.minghao@zte.com.cn> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-13scsi: lpfc: Fix compilation errors on kernels with no CONFIG_DEBUG_FSJames Smart
The Kernel test robot flagged the following warning: ".../lpfc_init.c:7788:35: error: 'struct lpfc_sli4_hba' has no member named 'c_stat'" Reviewing this issue highlighted that one of the recent patches caused the driver to no longer compile cleanly if CONFIG_DEBUG_FS is not set. Correct the different areas that are failing to compile. Link: https://lore.kernel.org/r/20210908050927.37275-1-jsmart2021@gmail.com Fixes: 02243836ad6f ("scsi: lpfc: Add support for the CM framework") Reviewed-by: Nathan Chancellor <nathan@kernel.org> Build-tested-by: Nathan Chancellor <nathan@kernel.org> Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-13scsi: lpfc: Fix CPU to/from endian warnings introduced by ELS processingJames Smart
The kernel test robot reported the following sparse warning: ".../lpfc_els.c:3984:25: sparse: sparse: cast from restricted __be16" For the error being flagged, using be32_to_cpu() on a be16 data type, it was simple enough. But a review of other elements and warnings were also evaluated. This patch corrected several items in the original patch: - Using be32_to_cpu() on a be16 data type - cpu_to_le32() used on a std uint32_t (CPU) data type. Note: This is a byte array, but stored in LE layout by hardware at 32-bit boundaries. So it possibly needed conversion. - Using cpu_to_le32() on a std uint16_t and assigned to a char typeA - Using le32_to_cpu() on a le16 type - Missing cpu_to_le16() on an assignment Link: https://lore.kernel.org/r/20210830231243.6227-1-jsmart2021@gmail.com Fixes: 9064aeb2df8e ("scsi: lpfc: Add EDC ELS support") Reported-by: kernel test robot <lkp@intel.com> Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-09-02Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This series consists of the usual driver updates (ufs, qla2xxx, target, smartpqi, lpfc, mpt3sas). The core change causing the most churn was replacing the command request field request with a macro, allowing us to offset map to it and remove the redundant field; the same was also done for the tag field. The most impactful change is the final removal of scsi_ioctl, which has been deprecated for over a decade" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (293 commits) scsi: ufs: Fix ufshcd_request_sense_async() for Samsung KLUFG8RHDA-B2D1 scsi: ufs: ufs-exynos: Fix static checker warning scsi: mpt3sas: Use the proper SCSI midlayer interfaces for PI scsi: lpfc: Use the proper SCSI midlayer interfaces for PI scsi: lpfc: Copyright updates for 14.0.0.1 patches scsi: lpfc: Update lpfc version to 14.0.0.1 scsi: lpfc: Add bsg support for retrieving adapter cmf data scsi: lpfc: Add cmf_info sysfs entry scsi: lpfc: Add debugfs support for cm framework buffers scsi: lpfc: Add support for maintaining the cm statistics buffer scsi: lpfc: Add rx monitoring statistics scsi: lpfc: Add support for the CM framework scsi: lpfc: Add cmfsync WQE support scsi: lpfc: Add support for cm enablement buffer scsi: lpfc: Add cm statistics buffer support scsi: lpfc: Add EDC ELS support scsi: lpfc: Expand FPIN and RDF receive logging scsi: lpfc: Add MIB feature enablement support scsi: lpfc: Add SET_HOST_DATA mbox cmd to pass date/time info to firmware scsi: fc: Add EDC ELS definition ...
2021-08-24scsi: lpfc: Use the proper SCSI midlayer interfaces for PIMartin K. Petersen
Use the SCSI midlayer interfaces to query protection interval, reference tag, per-command DIX flags, and logical block count. Link: https://lore.kernel.org/r/20210817025014.12085-3-martin.petersen@oracle.com CC: James Smart <james.smart@broadcom.com> CC: Dick Kennedy <dick.kennedy@broadcom.com> Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Copyright updates for 14.0.0.1 patchesJames Smart
Update copyrights to 2021 for files modified in the 14.0.0.1 patch set. Link: https://lore.kernel.org/r/20210816162901.121235-17-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Update lpfc version to 14.0.0.1James Smart
Update lpfc version to 14.0.0.1 Link: https://lore.kernel.org/r/20210816162901.121235-16-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add bsg support for retrieving adapter cmf dataJames Smart
Add a bsg ioctl to allow user applications to retrieve the adapter congestion management framework buffer. Link: https://lore.kernel.org/r/20210816162901.121235-15-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add cmf_info sysfs entryJames Smart
Allow abbreviated cm framework status information to be obtained via sysfs. Link: https://lore.kernel.org/r/20210816162901.121235-14-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add debugfs support for cm framework buffersJames Smart
Add support via debugfs to report the cm statistics, cm enablement, and rx monitor information. Link: https://lore.kernel.org/r/20210816162901.121235-13-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add support for maintaining the cm statistics bufferJames Smart
Add the logic to move the congestion management and event information into the cmd statistics buffer maintained for the adapter. The update includes rolling up values for the last minute, hour, and day information. Link: https://lore.kernel.org/r/20210816162901.121235-12-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add rx monitoring statisticsJames Smart
The driver provides overwatch of the cm behavior by maintaining a set of rx I/O statistics. This information is also used in later updating of the cm statistics buffer. Link: https://lore.kernel.org/r/20210816162901.121235-11-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add support for the CM frameworkJames Smart
Complete the enablement of the cm framework feature in the adapter. Perform the following: - Detect the presence of the congestion management framework feature. When the cm framework is present: - Issue the SET_FEATURE command to enable the feature. - Register the cm statistics buffer with the adapter. - Read the cm enablement buffer to determine the cm framework state for cm management. When cm management is enabled: - Monitor all FPIN and congestion signalling events, incrementing counters. - Regularly sync with the adapter to communicate congestion events and to receive an rx request limit. - Monitor requests for rx data and ensure that no more than the adapter prescribed limit is issued on the link. If the limit is exceeded, SCSI and/or NVMe traffic is temporarily suspended. - Maintain the minute, hourly, daily statistics buffer. - Monitor for congestion enablement change events, causing a reread of the enablement buffer and acting on any change in enablement. And: - Add teardown logic, including buffer deregistration, on adapter detachment or reset. Link: https://lore.kernel.org/r/20210816162901.121235-10-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add cmfsync WQE supportJames Smart
When congestion mgmt is enabled, cmf has the driver regularly issue a command to synchronize reporting of congestion mgmt events such as fpin and signal delivery. This patch adds the definition of the CMF_SYNC WQE and its CQE fields as well as support for issuing the command. The patch also adds the few remaining cmf-related SLI additions, such as feature definition for enablement of CMF and notifications to the driver if the cm enablement mode changes. Link: https://lore.kernel.org/r/20210816162901.121235-9-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add support for cm enablement bufferJames Smart
As part of the cmf framework, the firmware maintains a table with congestion related state information, specifically whether enabled and if enabled, whether monitoring or actively managing congestion. Add definition of the table and add support to read the table from the adapter and determine if it is enabled. In support of this, the READ_OBJECT mailbox command definition is added to the driver. Link: https://lore.kernel.org/r/20210816162901.121235-8-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add cm statistics buffer supportJames Smart
The cmf framework requires the driver to maintain a cm statistics table, accessible inband, of congestion related statistics that are reported per minute, rolled up to per hour, and rolled up again per day. Several days worth may be maintained. The table is registered with the adapter when the MIB feature is enabled. Add definition of the table and add support to register the table with the adapter. Includes definition and initialization of event counters that are later added to the statistics table. Link: https://lore.kernel.org/r/20210816162901.121235-7-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add EDC ELS supportJames Smart
When congestion management is enabled, issue EDC ELS to register congestion signaling capabilities with the fabric. The response handling will process the fabric parameters and set the reporting parameters. Similarly, add support for receiving an EDC request from the fabric generating a corresponding response. Implement handlers for congestion signals from the fabric and maintain statistics for them. Link: https://lore.kernel.org/r/20210816162901.121235-6-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Expand FPIN and RDF receive loggingJames Smart
Expand FPIN logging: - Display Attached Port Names for Link Integrity and Peer Congestion events - Log Delivery, Peer Congestion, and Congestion events - Sanity check FPIN descriptor lengths when processing FPIN descriptors. Log RDF events when congestion logging is enabled. Link: https://lore.kernel.org/r/20210816162901.121235-5-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add MIB feature enablement supportJames Smart
MIB support is currently limited to detecting support in the adapter and ensuring FDMI support is enabled if present. For the new framework MIB support also requires active enablement of support via the SET_FEATURES command with the firmware. Rework the MIB detection and enablement for the following: - Move detection away from the get_sli4_parameters routine, and into the hba_setup path. get_sli4_parameters is only called once at attachment while hba_setup is called as part of any SLI port reset path. This ensures detection after firmware download. - Update SET_FEATURES mbx command for the MIB enablement feature and add support for the feature. - Create the cmf_setup routine to encapsulate the detection of MIB support and perform the enablement of the MIB support feature. Link: https://lore.kernel.org/r/20210816162901.121235-4-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-24scsi: lpfc: Add SET_HOST_DATA mbox cmd to pass date/time info to firmwareJames Smart
Implement the SET_HOST_DATA mbox command to set date / time during initialization. It is used by the firmware for various purposes including congestion management and firmware dumps. Link: https://lore.kernel.org/r/20210816162901.121235-3-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-11scsi: lpfc: Use scsi_cmd_to_rq() instead of scsi_cmnd.requestBart Van Assche
Prepare for removal of the request pointer by using scsi_cmd_to_rq() instead. This patch does not change any functionality. Link: https://lore.kernel.org/r/20210809230355.8186-28-bvanassche@acm.org Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-09scsi: lpfc: Move initialization of phba->poll_list earlier to avoid crashEwan D. Milne
The phba->poll_list is traversed in case of an error in lpfc_sli4_hba_setup(), so it must be initialized earlier in case the error path is taken. [ 490.030738] lpfc 0000:65:00.0: 0:1413 Failed to init iocb list. [ 490.036661] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [ 490.044485] PGD 0 P4D 0 [ 490.047027] Oops: 0000 [#1] SMP PTI [ 490.050518] CPU: 0 PID: 7 Comm: kworker/0:1 Kdump: loaded Tainted: G I --------- - - 4.18. [ 490.060511] Hardware name: Dell Inc. PowerEdge R440/0WKGTH, BIOS 1.4.8 05/22/2018 [ 490.067994] Workqueue: events work_for_cpu_fn [ 490.072371] RIP: 0010:lpfc_sli4_cleanup_poll_list+0x20/0xb0 [lpfc] [ 490.078546] Code: cf e9 04 f7 fe ff 0f 1f 40 00 0f 1f 44 00 00 41 57 49 89 ff 41 56 41 55 41 54 4d 8d a79 [ 490.097291] RSP: 0018:ffffbd1a463dbcc8 EFLAGS: 00010246 [ 490.102518] RAX: 0000000000008200 RBX: ffff945cdb8c0000 RCX: 0000000000000000 [ 490.109649] RDX: 0000000000018200 RSI: ffff9468d0e16818 RDI: 0000000000000000 [ 490.116783] RBP: ffff945cdb8c1740 R08: 00000000000015c5 R09: 0000000000000042 [ 490.123915] R10: 0000000000000000 R11: ffffbd1a463dbab0 R12: ffff945cdb8c25c0 [ 490.131049] R13: 00000000fffffff4 R14: 0000000000001800 R15: ffff945cdb8c0000 [ 490.138182] FS: 0000000000000000(0000) GS:ffff9468d0e00000(0000) knlGS:0000000000000000 [ 490.146267] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 490.152013] CR2: 0000000000000000 CR3: 000000042ca10002 CR4: 00000000007706f0 [ 490.159146] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 490.166277] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 490.173409] PKRU: 55555554 [ 490.176123] Call Trace: [ 490.178598] lpfc_sli4_queue_destroy+0x7f/0x3c0 [lpfc] [ 490.183745] lpfc_sli4_hba_setup+0x1bc7/0x23e0 [lpfc] [ 490.188797] ? kernfs_activate+0x63/0x80 [ 490.192721] ? kernfs_add_one+0xe7/0x130 [ 490.196647] ? __kernfs_create_file+0x80/0xb0 [ 490.201020] ? lpfc_pci_probe_one_s4.isra.48+0x46f/0x9e0 [lpfc] [ 490.206944] lpfc_pci_probe_one_s4.isra.48+0x46f/0x9e0 [lpfc] [ 490.212697] lpfc_pci_probe_one+0x179/0xb70 [lpfc] [ 490.217492] local_pci_probe+0x41/0x90 [ 490.221246] work_for_cpu_fn+0x16/0x20 [ 490.224994] process_one_work+0x1a7/0x360 [ 490.229009] ? create_worker+0x1a0/0x1a0 [ 490.232933] worker_thread+0x1cf/0x390 [ 490.236687] ? create_worker+0x1a0/0x1a0 [ 490.240612] kthread+0x116/0x130 [ 490.243846] ? kthread_flush_work_fn+0x10/0x10 [ 490.248293] ret_from_fork+0x35/0x40 [ 490.251869] Modules linked in: lpfc(+) xt_CHECKSUM ipt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4i [ 490.332609] CR2: 0000000000000000 Link: https://lore.kernel.org/r/20210809150947.18104-1-emilne@redhat.com Fixes: 93a4d6f40198 ("scsi: lpfc: Add registration for CPU Offline/Online events") Cc: stable@vger.kernel.org Reviewed-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30scsi: lpfc: Fix possible ABBA deadlock in nvmet_xri_aborted()James Smart
The lpfc_sli4_nvmet_xri_aborted() routine takes out the abts_buf_list_lock and traverses the buffer contexts to match the xri. Upon match, it then takes the context lock before potentially removing the context from the associated buffer list. This violates the lock hierarchy used elsewhere in the driver of locking context, then the abts_buf_list_lock - thus a possible deadlock. Resolve by: after matching, release the abts_buf_list_lock, then take the context lock, and if to be deleted from the list, retake the abts_buf_list_lock, maintaining lock hierarchy. This matches same list lock hierarchy as elsewhere in the driver Link: https://lore.kernel.org/r/20210730163309.25809-1-jsmart2021@gmail.com Reported-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-04 06:43:22 +0000