- 29 Oct, 2019 6 commits
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Benjamin Block authored
The FCP channel exposes two central interfaces to receive information about the local FCP-Adapter/-Port: Exchange Port and Exchange Config Data. Using these commands can negatively impact the adapter if we allow them to be sent at a very high rate. The later parts of this patchset will introduce new user-interfaces to receive more diagnostics from the adapter. To prevent any negative impact from using those, this patch adds a simple caching-mechanism that will prevent a malicious/faulty userspace-application from generating an abnormal high amount of Exchange Port/Config Data traffic. Relevant diagnostic data that is received via Exchange Config/Port Data is cached in buffers associated with the corresponding adapter-struct. Each buffer is associated with a timestamp that signals how old the data is, and, added via a following patch in this series, lets userspace-interfaces determine when the data is too old and needs to be updated. Buffer-updates are made during the normal response path of the corresponding command. With this patch only the output of the Exchange Port Data command is captured. Link: https://lore.kernel.org/r/054ca020ce0a53dc0d9176428bea373898944e6a.1572018130.git.bblock@linux.ibm.comReviewed-by:
Steffen Maier <maier@linux.ibm.com> Signed-off-by:
Benjamin Block <bblock@linux.ibm.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Benjamin Block authored
Adds a new FSF-Request status flag (ZFCP_STATUS_FSFREQ_XDATAINCOMPLETE) that signal that the data received using Exchange Config Data or Exchange Port Data was incomplete. This new flags is set in the respective handlers during the response path. With this patch, only the synchronous FSF-functions for each command got support for the new flag, otherwise it is transparent. Together with this new flag and already existing status flags the synchronous FSF-functions are extended to now detect whether the received data is complete, incomplete or completely invalid (this includes cases where a command ran into a timeout). This is now signaled back to the caller, where previously only failures on the request path would result in a bad return-code. For complete data the return-code remains 0. For incomplete data a new return-code -EAGAIN is added to the function-interface. For completely invalid data the already existing return-code -EIO is reused - formerly this was used to signal failures on the request path. Existing callers of the FSF-functions are adjusted so that they behave as before for return-code 0 and -EAGAIN, to not change the user-interface. As -EIO existed all along, it was already exposed to the user - and needed handling - and will now also be exposed in this new special case. Link: https://lore.kernel.org/r/e14f0702fa2b00a4d1f37c7981a13f2dd1ea2c83.1572018130.git.bblock@linux.ibm.comReviewed-by:
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YueHaibing authored
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.comReported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Reviewed-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
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Saurav Girepunje authored
mempool_destroy has taken null pointer check into account. Remove the redundant check. Link: https://lore.kernel.org/r/20191026194712.GA22249@sauravSigned-off-by:
Saurav Girepunje <saurav.girepunje@gmail.com> Reviewed-by:
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James Smart authored
convert MAGIC_NUMER_xxx to MAGIC_NUMBER_xxx Link: https://lore.kernel.org/r/20191025184342.6623-1-jsmart2021@gmail.comSigned-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:
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James Smart authored
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.comSigned-off-by:
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- 25 Oct, 2019 34 commits
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Luo Jiaxing authored
The number of phy down reflects the quality of the link between SAS controller and disk. In order to allow the user to confirm the link quality of the system, we record the number of phy down for each phy. The user can check the current phy down count by reading the debugfs file corresponding to the specific phy, or clear the phy down count by writing 0 to the debugfs file. Link: https://lore.kernel.org/r/1571926105-74636-19-git-send-email-john.garry@huawei.comSigned-off-by:
Luo Jiaxing <luojiaxing@huawei.com> Signed-off-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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Luo Jiaxing authored
Although if the debugfs initialization fails, we will delete the debugfs folder of hisi_sas, but we did not consider the scenario where debugfs was successfully initialized, but the probe failed for other reasons. We found out that hisi_sas folder is still remain after the probe failed. When probe fail, we should delete debugfs folder to avoid the above issue. Link: https://lore.kernel.org/r/1571926105-74636-18-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
We use the module parameter debugfs_dump_count to manage the upper limit of the memory block for multiple dumps. Link: https://lore.kernel.org/r/1571926105-74636-17-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
We still only use dump index #0 however. Link: https://lore.kernel.org/r/1571926105-74636-16-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
We add multiple dumps for debugfs, but only allocate memory this time and only dump #0. Link: https://lore.kernel.org/r/1571926105-74636-15-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address for ITCT cache at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it needs. Link: https://lore.kernel.org/r/1571926105-74636-14-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address for IOST cache at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it needs. Link: https://lore.kernel.org/r/1571926105-74636-13-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address for ITCT at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it needs. Link: https://lore.kernel.org/r/1571926105-74636-12-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address for IOST at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it needs. Link: https://lore.kernel.org/r/1571926105-74636-11-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address and phy pointer for port at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it need. Link: https://lore.kernel.org/r/1571926105-74636-10-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address and hisi_hba pointer for REGS at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it need. Link: https://lore.kernel.org/r/1571926105-74636-9-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address and DQ pointer for DQ at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it need. Link: https://lore.kernel.org/r/1571926105-74636-8-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
Create a file structure which was used to save the memory address and CQ pointer for CQ at debugfs. This structure is bound to the corresponding debugfs file, it can help callback function of debugfs file to get what it need. Link: https://lore.kernel.org/r/1571926105-74636-7-git-send-email-john.garry@huawei.comSigned-off-by:
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Luo Jiaxing authored
It's useful to know when the dump occurred, so add a timestamp file for this. Link: https://lore.kernel.org/r/1571926105-74636-6-git-send-email-john.garry@huawei.comSigned-off-by:
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Xiang Chen authored
For IOs from upper layer, preemption may be disabled as it may be called by function __blk_mq_delay_run_hw_queue which will call get_cpu() (it disables preemption). So if flags HISI_SAS_REJECT_CMD_BIT is set in function hisi_sas_task_exec(), it may disable preempt twice after down() and up() which will cause following call trace: BUG: scheduling while atomic: fio/60373/0x00000002 Call trace: dump_backtrace+0x0/0x150 show_stack+0x24/0x30 dump_stack+0xa0/0xc4 __schedule_bug+0x68/0x88 __schedule+0x4b8/0x548 schedule+0x40/0xd0 schedule_timeout+0x200/0x378 __down+0x78/0xc8 down+0x54/0x70 hisi_sas_task_exec.isra.10+0x598/0x8d8 [hisi_sas_main] hisi_sas_queue_command+0x28/0x38 [hisi_sas_main] sas_queuecommand+0x168/0x1b0 [libsas] scsi_queue_rq+0x2ac/0x980 blk_mq_dispatch_rq_list+0xb0/0x550 blk_mq_do_dispatch_sched+0x6c/0x110 blk_mq_sched_dispatch_requests+0x114/0x1d8 __blk_mq_run_hw_queue+0xb8/0x130 __blk_mq_delay_run_hw_queue+0x1c0/0x220 blk_mq_run_hw_queue+0xb0/0x128 blk_mq_sched_insert_requests+0xdc/0x208 blk_mq_flush_plug_list+0x1b4/0x3a0 blk_flush_plug_list+0xdc/0x110 blk_finish_plug+0x3c/0x50 blkdev_direct_IO+0x404/0x550 generic_file_read_iter+0x9c/0x848 blkdev_read_iter+0x50/0x78 aio_read+0xc8/0x170 io_submit_one+0x1fc/0x8d8 __arm64_sys_io_submit+0xdc/0x280 el0_svc_common.constprop.0+0xe0/0x1e0 el0_svc_handler+0x34/0x90 el0_svc+0x10/0x14 ... To solve the issue, check preemptible() to avoid disabling preempt multiple when flag HISI_SAS_REJECT_CMD_BIT is set. Link: https://lore.kernel.org/r/1571926105-74636-5-git-send-email-john.garry@huawei.comSigned-off-by:
Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by:
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Xiang Chen authored
When injecting 2bit ecc errors, it will cause confusion inside SAS controller which needs host reset to recover it. If a device is gone at the same times inject 2bit ecc errors, we may not receive the ITCT interrupt so it will wait for completion in clear_itct_v3_hw() all the time. And host reset will also not occur because it can't require hisi_hba->sem, so the system will be suspended. To solve the issue, use wait_for_completion_timeout() instead of wait_for_completion(), and also don't mark the gone device as SAS_PHY_UNUSED when device gone. Link: https://lore.kernel.org/r/1571926105-74636-4-git-send-email-john.garry@huawei.comSigned-off-by:
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Xiang Chen authored
If set the BIST init value after enabling BIST, there may be still some few error bits. According to the process, need to set the BIST init value before enabling BIST. Fixes: 97b151e7 ("scsi: hisi_sas: Add BIST support for phy loopback") Link: https://lore.kernel.org/r/1571926105-74636-3-git-send-email-john.garry@huawei.comSigned-off-by:
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Xiang Chen authored
Due to a merge error, we attempt to create 2x debugfs dump folders, which fails: [ 861.101914] debugfs: Directory 'dump' with parent '0000:74:02.0' already present! This breaks the dump function. To fix, remove the superfluous attempt to create the folder. Fixes: 7ec7082c ("scsi: hisi_sas: Add hisi_sas_debugfs_alloc() to centralise allocation") Link: https://lore.kernel.org/r/1571926105-74636-2-git-send-email-john.garry@huawei.comSigned-off-by:
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Geert Uytterhoeven authored
Fix misspellings of "disonnect", "reconnect", "connection", "connected", and "disconnection". Link: https://lore.kernel.org/r/20191024152633.30404-1-geert+renesas@glider.beSigned-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Geert Uytterhoeven authored
Fix misspelling of "configuration". Link: https://lore.kernel.org/r/20191024152543.30310-1-geert+renesas@glider.beSigned-off-by:
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Tomas Henzl authored
From an interrupt handler path memory may be allocated using GFP_KERNEL, replace it with GFP_ATOMIC. _base_interrupt->_scsih_io_done->_scsih_smart_predicted_fault Link: https://lore.kernel.org/r/20191024152835.6177-1-thenzl@redhat.comSigned-off-by:
Tomas Henzl <thenzl@redhat.com> Signed-off-by:
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Dan Carpenter authored
This error path is missing an unlock. Fixes: 26780d9e ("[SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver") Link: https://lore.kernel.org/r/20191022102324.GA27540@mwandaSigned-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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YueHaibing authored
Fixes gcc '-Wunused-but-set-variable' warning: drivers/scsi/cxgbi/cxgb4i/cxgb4i.c:2076:15: warning: variable ppmax set but not used [-Wunused-but-set-variable] drivers/target/iscsi/cxgbit/cxgbit_ddp.c:300:15: warning: variable ppmax set but not used [-Wunused-but-set-variable] It is not used since commit a248384e ("cxgb4/libcxgb/cxgb4i/cxgbit: enable eDRAM page pods for iSCSI") Link: https://lore.kernel.org/r/20191021142042.30964-1-yuehaibing@huawei.comSigned-off-by:
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Dan Carpenter authored
These are called with IRQs disabled from csio_mgmt_tmo_handler() so we can't call spin_unlock_irq() or it will enable IRQs prematurely. Fixes: a3667aae ("[SCSI] csiostor: Chelsio FCoE offload driver") Link: https://lore.kernel.org/r/20191019085913.GA14245@mwandaSigned-off-by:
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Saurav Girepunje authored
Replace assignment of 0 to pointer with NULL assignment. Link: https://lore.kernel.org/r/20191024030857.GA12097@sauravSigned-off-by:
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Saurav Girepunje authored
Replace assignment of 0 to pointer with NULL assignment. Link: https://lore.kernel.org/r/20191024025726.GA31421@sauravSigned-off-by:
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James Smart authored
Update lpfc version to 12.6.0.0 Link: https://lore.kernel.org/r/20191018211832.7917-17-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
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.comSigned-off-by:
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James Smart authored
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.comSigned-off-by:
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James Smart authored
Add decode support for adapter Async Events which report FA-WWN configuration errors. Link: https://lore.kernel.org/r/20191018211832.7917-14-jsmart2021@gmail.comSigned-off-by:
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James Smart authored
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.comSigned-off-by:
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James Smart authored
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.comSigned-off-by:
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James Smart authored
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.comSigned-off-by: -
James Smart authored
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.comSigned-off-by:
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