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2019-02-04scsi: megaraid_sas: Add support for DEVICE_LIST DCMD in driverShivasharan S4-23/+250
This patch adds support for the new DEVICE_LIST DCMD. Driver currently sends two separate DCMDs for getting the list of PDs and LDs that are exposed to host. The new DCMD provides a single interface to get a list of both PDs and LDs that are exposed to the host. Based on the list of target IDs that are returned by this DCMD, driver will add the devices (PD/LD) to SML. Driver will check for FW support for this new DCMD and based on the support will either send the new DCMD or will fall back to the earlier method of sending two separate DCMDs for PD and LD list. Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-02-04scsi: megaraid_sas: Rework device add code in AEN pathShivasharan S1-66/+107
In preparation of adding support for the DEVICE_LIST DCMD, this patch refactors the code in the AEN event handling path. Add new function to update the PD and LD list in driver. Move the code to scan PD and VD channels into separate function. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-02-04scsi: megaraid_sas: Rework code to get PD and LD listShivasharan S1-13/+31
During FW init, combine the code to get the PD and LD list from FW into a single function. This patch is in preparation for adding support for HOST_DEVICE_LIST DCMD. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-20scsi: megaraid: fix out-of-bound array accessesQian Cai2-2/+2
UBSAN reported those with MegaRAID SAS-3 3108, [ 77.467308] UBSAN: Undefined behaviour in drivers/scsi/megaraid/megaraid_sas_fp.c:117:32 [ 77.475402] index 255 is out of range for type 'MR_LD_SPAN_MAP [1]' [ 77.481677] CPU: 16 PID: 333 Comm: kworker/16:1 Not tainted 4.20.0-rc5+ #1 [ 77.488556] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.50 06/01/2018 [ 77.495791] Workqueue: events work_for_cpu_fn [ 77.500154] Call trace: [ 77.502610] dump_backtrace+0x0/0x2c8 [ 77.506279] show_stack+0x24/0x30 [ 77.509604] dump_stack+0x118/0x19c [ 77.513098] ubsan_epilogue+0x14/0x60 [ 77.516765] __ubsan_handle_out_of_bounds+0xfc/0x13c [ 77.521767] mr_update_load_balance_params+0x150/0x158 [megaraid_sas] [ 77.528230] MR_ValidateMapInfo+0x2cc/0x10d0 [megaraid_sas] [ 77.533825] megasas_get_map_info+0x244/0x2f0 [megaraid_sas] [ 77.539505] megasas_init_adapter_fusion+0x9b0/0xf48 [megaraid_sas] [ 77.545794] megasas_init_fw+0x1ab4/0x3518 [megaraid_sas] [ 77.551212] megasas_probe_one+0x2c4/0xbe0 [megaraid_sas] [ 77.556614] local_pci_probe+0x7c/0xf0 [ 77.560365] work_for_cpu_fn+0x34/0x50 [ 77.564118] process_one_work+0x61c/0xf08 [ 77.568129] worker_thread+0x534/0xa70 [ 77.571882] kthread+0x1c8/0x1d0 [ 77.575114] ret_from_fork+0x10/0x1c [ 89.240332] UBSAN: Undefined behaviour in drivers/scsi/megaraid/megaraid_sas_fp.c:117:32 [ 89.248426] index 255 is out of range for type 'MR_LD_SPAN_MAP [1]' [ 89.254700] CPU: 16 PID: 95 Comm: kworker/u130:0 Not tainted 4.20.0-rc5+ #1 [ 89.261665] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.50 06/01/2018 [ 89.268903] Workqueue: events_unbound async_run_entry_fn [ 89.274222] Call trace: [ 89.276680] dump_backtrace+0x0/0x2c8 [ 89.280348] show_stack+0x24/0x30 [ 89.283671] dump_stack+0x118/0x19c [ 89.287167] ubsan_epilogue+0x14/0x60 [ 89.290835] __ubsan_handle_out_of_bounds+0xfc/0x13c [ 89.295828] MR_LdRaidGet+0x50/0x58 [megaraid_sas] [ 89.300638] megasas_build_io_fusion+0xbb8/0xd90 [megaraid_sas] [ 89.306576] megasas_build_and_issue_cmd_fusion+0x138/0x460 [megaraid_sas] [ 89.313468] megasas_queue_command+0x398/0x3d0 [megaraid_sas] [ 89.319222] scsi_dispatch_cmd+0x1dc/0x8a8 [ 89.323321] scsi_request_fn+0x8e8/0xdd0 [ 89.327249] __blk_run_queue+0xc4/0x158 [ 89.331090] blk_execute_rq_nowait+0xf4/0x158 [ 89.335449] blk_execute_rq+0xdc/0x158 [ 89.339202] __scsi_execute+0x130/0x258 [ 89.343041] scsi_probe_and_add_lun+0x2fc/0x1488 [ 89.347661] __scsi_scan_target+0x1cc/0x8c8 [ 89.351848] scsi_scan_channel.part.3+0x8c/0xc0 [ 89.356382] scsi_scan_host_selected+0x130/0x1f0 [ 89.361002] do_scsi_scan_host+0xd8/0xf0 [ 89.364927] do_scan_async+0x9c/0x320 [ 89.368594] async_run_entry_fn+0x138/0x420 [ 89.372780] process_one_work+0x61c/0xf08 [ 89.376793] worker_thread+0x13c/0xa70 [ 89.380546] kthread+0x1c8/0x1d0 [ 89.383778] ret_from_fork+0x10/0x1c This is because when populating Driver Map using firmware raid map, all non-existing VDs set their ldTgtIdToLd to 0xff, so it can be skipped later. From drivers/scsi/megaraid/megaraid_sas_base.c , memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS); From drivers/scsi/megaraid/megaraid_sas_fp.c , /* For non existing VDs, iterate to next VD*/ if (ld >= (MAX_LOGICAL_DRIVES_EXT - 1)) continue; However, there are a few places that failed to skip those non-existing VDs due to off-by-one errors. Then, those 0xff leaked into MR_LdRaidGet(0xff, map) and triggered the out-of-bound accesses. Fixes: 51087a8617fe ("megaraid_sas : Extended VD support") Signed-off-by: Qian Cai <cai@lca.pw> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-19scsi: megaraid_sas: driver version updateShivasharan S1-2/+2
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-19scsi: megaraid_sas: Use 63-bit DMA addressingShivasharan S1-9/+9
Although MegaRAID controllers support 64-bit DMA addressing, as per hardware design, DMA address with all 64-bits set (0xFFFFFFFF-FFFFFFFF) results in a firmware fault. Driver will set 63-bit DMA mask to ensure the above address will not be used. Cc: stable@vger.kernel.org Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-19scsi: megaraid_sas: add retry logic in megasas_readlShivasharan S2-18/+49
Due to hardware errata in Aero controllers, reads to certain fusion registers could intermittently return zero. This behavior is transient in nature and subsequent reads will return valid value. For Aero controllers, any calls to readl to read from certain registers will be retried for maximum three times, if read returns zero. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-19scsi: megaraid_sas: changes to function prototypesShivasharan S3-59/+60
Instead of the register address, pass the instance pointer to clear_intr and read_fw_status_reg functions. This is done in preparation for adding adapter type based checks in these functions in later patches of this series. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-19scsi: megaraid_sas: Introduce new Aero adapter typeShivasharan S2-6/+13
Identify all Aero controller PCI IDs with new adapter type. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-19scsi: megaraid_sas: Fix Ventura series based checksShivasharan S3-20/+20
In preparation for the new Aero series adapter type, all the places where we check adapter type for Ventura series needs to include any later adapter types. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-18scsi: flip the default on use_clusteringChristoph Hellwig2-2/+0
Most SCSI drivers want to enable "clustering", that is merging of segments so that they might span more than a single page. Remove the ENABLE_CLUSTERING define, and require drivers to explicitly set DISABLE_CLUSTERING to disable this feature. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-12-07scsi: megaraid_sas: NULL check before some freeing functions is not neededThomas Meyer3-16/+8
NULL check before some freeing functions is not needed. Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-28scsi: megaraid_sas_fusion: Mark expected switch fall-throughGustavo A. R. Silva1-1/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that, in this particular case, I replaced "Fall thru" with a "Fall through" annotation and added a dash as a token in order to separate the "Fall through" annotation from the rest of the comment on the same line, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-28scsi: megaraid: megaraid_sas_base: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-21scsi: megaraid_sas: Add support for MegaRAID Aero controllersShivasharan S2-0/+19
This patch adds support for MegaRAID Aero controller PCI IDs. Print a message when a configurable secure type controller is encountered. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Update driver versionShivasharan S1-2/+2
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: modify max supported lds related printShivasharan S1-3/+3
The print related to number of VDs that a particular firmware supports is misleading in some cases. Even though supportMaxExtLDs is set, certain firmware profiles only supports upto 64VDs. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: remove unused macroShivasharan S1-1/+0
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: increase timeout for IOC INIT to 180secondsShivasharan S1-1/+1
IOC INIT frame needs to be fired with a timeout of 180 seconds. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Remove double endian conversionShivasharan S1-3/+1
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Re-use max_mfi_cmds to calculate queue sizesShivasharan S1-3/+1
In megasas_init_adapter_fusion(), max_mfi_cmds is being calcuated as (MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS). max_mfi_cmds can be used in megasas_configure_queue_sizes. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Rename scratch_pad registersShivasharan S3-46/+45
Rename the scratch pad registers to match firmware headers. No functional change. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Remove spin lock for dpc operationShivasharan S1-6/+1
Optimization: No need to hold hba_lock in dpc context for reading atomic variable. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: optimize raid context access in IO pathShivasharan S1-43/+31
No functional change. Use local variables when accessing raid context in IO path. Improves code readability. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Fail init if heartbeat timer failsShivasharan S1-2/+4
When driver fails to start the heartbeat timer, exit from FW init. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: For SRIOV, do not set STOP_ADP bitShivasharan S1-3/+5
For SRIOV based adapters, driver should not set the STOP_ADP bit as part of kill adapter. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Fix combined reply queue mode detectionShivasharan S1-3/+20
For Invader series, if FW supports more than 8 MSI-x vectors, driver needs to enable combined reply queue mode. For Ventura series, driver enables combined reply queue mode in case of more than 16 MSI-x vectors. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Fix module parameter descriptionShivasharan S1-3/+2
Module parameter description for rdpq_enable incorrectly lists the default as enabled. Also, provide range of valid values for resetwaittime in the description. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Fix goto labels in error handlingShivasharan S1-3/+2
During init, if pci_alloc_irq_vectors() fails, the driver has not yet setup the IRQs. Fix the goto labels and error handling for this case. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Update copyright informationShivasharan S5-42/+32
Change copyright to Broadcom Inc. Also update any references to Avago with Broadcom. Update copyright duration wherever required. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Add check for reset adapter bitShivasharan S1-11/+22
For SAS3 and later controllers, FW sets the reset adapter bit indicating the driver to perform a controller reset. Driver needs to check if this bit is set before doing a reset. This reduces the driver probe failure time to 180seconds in case there is a faulty controller connected. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Fix msleep granularityShivasharan S1-2/+2
In megasas_transition_to_ready() driver waits 180seconds for controller to change FW state. Here we are calling msleep(1) in a loop for this. As explained in timers-howto.txt, msleep(1) will actually sleep longer than 1ms. If a faulty controller is connected, we will end up waiting for much more than 180 seconds causing unnecessary delays during load. Change the granularity of msleep() call from 1ms to 1000ms. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Add support for FW snap dumpShivasharan S4-13/+208
Latest firmware adds a mechanism to save firmware logs just before controller reset on pre-allocated internal controller DRAM. This feature is called snapdump which will help debugging firmware issues. This feature requires extra time and firmware reports these values through new driver interface. Before initiating an OCR, driver needs to inform FW to save a snapdump and then wait for a specified time for the snapdump to complete. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-11-06scsi: megaraid_sas: Add watchdog thread to detect Firmware faultShivasharan S3-54/+167
Currently driver checks for Firmware state change from ISR context, and only when there are interrupts tied with no I/O completions. We have seen multiple cases where doorbell interrupts sent by firmware to indicate FW state change are not processed by driver and it takes long time for driver to trigger OCR. And if there are no IOs running, since we only check the FW state as part of ISR code, fault goes undetected by driver and OCR will not be triggered. This patch introduces a separate workqueue that runs every one second to detect Firmware FAULT state and trigger reset immediately. As an additional gain, removing PCI reads from ISR to check FW state results in improved performance as well. Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-10-17scsi: megaraid_sas: switch to generic DMA APIChristoph Hellwig2-83/+83
Switch from the legacy PCI DMA API to the generic DMA API. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-10-17scsi: megaraid_mbox: switch to generic DMA APIChristoph Hellwig1-26/+25
Switch from the legacy PCI DMA API to the generic DMA API. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-10-16scsi: megaraid_mbox: remove set but not used variablesYueHaibing1-27/+0
Fixes gcc '-Wunused-but-set-variable' warning: drivers/scsi/megaraid/megaraid_mbox.c: In function 'megaraid_reset_handler': drivers/scsi/megaraid/megaraid_mbox.c:2580:7: warning: variable 'recovering' set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_mbox.c: In function 'mbox_post_sync_cmd': drivers/scsi/megaraid/megaraid_mbox.c:2728:12: warning: variable 'mbox64' set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_mbox.c: In function 'megaraid_mbox_support_random_del': drivers/scsi/megaraid/megaraid_mbox.c:3138:11: warning: variable 'mbox' set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_mbox.c: In function 'megaraid_mbox_flush_cache': drivers/scsi/megaraid/megaraid_mbox.c:3266:10: warning: variable 'mbox' set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_mbox.c: In function 'megaraid_mbox_fire_sync_cmd': drivers/scsi/megaraid/megaraid_mbox.c:3302:12: warning: variable 'mbox64' set but not used [-Wunused-but-set-variable] drivers/scsi/megaraid/megaraid_mbox.c: In function 'gather_hbainfo': drivers/scsi/megaraid/megaraid_mbox.c:3797:10: warning: variable 'dmajor' set but not used [-Wunused-but-set-variable] [mkp: applied by hand due to conflict with hch's DMA cleanup] Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-10-16scsi: megaraid_sas: fix a missing-check bugWenwen Wang1-0/+3
In megasas_mgmt_compat_ioctl_fw(), to handle the structure compat_megasas_iocpacket 'cioc', a user-space structure megasas_iocpacket 'ioc' is allocated before megasas_mgmt_ioctl_fw() is invoked to handle the packet. Since the two data structures have different fields, the data is copied from 'cioc' to 'ioc' field by field. In the copy process, 'sense_ptr' is prepared if the field 'sense_len' is not null, because it will be used in megasas_mgmt_ioctl_fw(). To prepare 'sense_ptr', the user-space data 'ioc->sense_off' and 'cioc->sense_off' are copied and saved to kernel-space variables 'local_sense_off' and 'user_sense_off' respectively. Given that 'ioc->sense_off' is also copied from 'cioc->sense_off', 'local_sense_off' and 'user_sense_off' should have the same value. However, 'cioc' is in the user space and a malicious user can race to change the value of 'cioc->sense_off' after it is copied to 'ioc->sense_off' but before it is copied to 'user_sense_off'. By doing so, the attacker can inject different values into 'local_sense_off' and 'user_sense_off'. This can cause undefined behavior in the following execution, because the two variables are supposed to be same. This patch enforces a check on the two kernel variables 'local_sense_off' and 'user_sense_off' to make sure they are the same after the copy. In case they are not, an error code EINVAL will be returned. Signed-off-by: Wenwen Wang <wang6495@umn.edu> Acked-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-10-15scsi: megaraid_mbox: remove bogus use of pci_dma_sync_sg_* APIsChristoph Hellwig1-34/+1
The dma_map_sg / dma_unmap_sg APIs called from scsi_dma_map / scsi_dma_unmap already transfer memory ownership to the device or cpu respectively. Adding additional calls to pci_dma_sync_sg_* will in fact lead to data corruption if we end up using swiotlb for some reason. Also remove the now pointless megaraid_mbox_sync_scb function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-09-25scsi: megaraid: fix spelling mistake "maibox" -> "mailbox"Colin Ian King2-3/+3
Trivial fix to spelling mistake in warning message and comments Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-26scsi: read host_busy via scsi_host_busy()Ming Lei1-1/+1
No functional change. Just introduce scsi_host_busy() and replace the direct read of scsi_host->host_busy with this new API. Cc: Omar Sandoval <osandov@fb.com>, Cc: "Martin K. Petersen" <martin.petersen@oracle.com>, Cc: James Bottomley <james.bottomley@hansenpartnership.com>, Cc: Christoph Hellwig <hch@lst.de>, Cc: Don Brace <don.brace@microsemi.com> Cc: Kashyap Desai <kashyap.desai@broadcom.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Laurence Oberman <loberman@redhat.com> Cc: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-18scsi: megaraid_sas: driver version upgradeShivasharan S1-2/+2
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-18scsi: megaraid_sas: Support FW provided TM timeout valuesShivasharan S3-17/+84
Firmware provides drive specific target reset and task abort timeout values. Driver needs to use these timeout values during task management calls. If FW does not provide these values, fall back to using earlier default timeout of 50 seconds for TM. [mkp: clarified comment] Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-18scsi: megaraid_sas: Return immediately from wait_for_adapter_operational after kill adapterShivasharan S1-7/+8
While driver is waiting for adapter to become operational, if a kill adapter is issued, driver can bail out from the wait loop immediately rather than waiting for the entire 180 seconds. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-18scsi: megaraid_sas: Update controller info during resumeShivasharan S1-0/+3
There is a possibility that firmware on the controller was upgraded before system was suspended. During resume, driver needs to read updated controller properties. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-18scsi: megaraid_sas: Do not do Kill adapter if GET_CTRL_INFO times outShivasharan S1-2/+3
If MR_DCMD_CTRL_GET_INFO DCMD timed out, return failure rather than doing kill adapter. Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-12treewide: Use array_size() in vzalloc()Kees Cook1-4/+6
The vzalloc() function has no 2-factor argument form, so multiplication factors need to be wrapped in array_size(). This patch replaces cases of: vzalloc(a * b) with: vzalloc(array_size(a, b)) as well as handling cases of: vzalloc(a * b * c) with: vzalloc(array3_size(a, b, c)) This does, however, attempt to ignore constant size factors like: vzalloc(4 * 1024) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( vzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | vzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( vzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | vzalloc( - sizeof(u8) * COUNT + COUNT , ...) | vzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | vzalloc( - sizeof(char) * COUNT + COUNT , ...) | vzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( vzalloc( - sizeof(TYPE) * (COUNT_ID) + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT_ID + array_size(COUNT_ID, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT_CONST + array_size(COUNT_CONST, sizeof(TYPE)) , ...) | vzalloc( - sizeof(THING) * (COUNT_ID) + array_size(COUNT_ID, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT_ID + array_size(COUNT_ID, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * (COUNT_CONST) + array_size(COUNT_CONST, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT_CONST + array_size(COUNT_CONST, sizeof(THING)) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ vzalloc( - SIZE * COUNT + array_size(COUNT, SIZE) , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( vzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | vzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | vzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( vzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | vzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | vzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | vzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( vzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | vzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( vzalloc(C1 * C2 * C3, ...) | vzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants. @@ expression E1, E2; constant C1, C2; @@ ( vzalloc(C1 * C2, ...) | vzalloc( - E1 * E2 + array_size(E1, E2) , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook2-5/+5
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12treewide: kmalloc() -> kmalloc_array()Kees Cook1-4/+6
The kmalloc() function has a 2-factor argument form, kmalloc_array(). This patch replaces cases of: kmalloc(a * b, gfp) with: kmalloc_array(a * b, gfp) as well as handling cases of: kmalloc(a * b * c, gfp) with: kmalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kmalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kmalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The tools/ directory was manually excluded, since it has its own implementation of kmalloc(). The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kmalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kmalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kmalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kmalloc( - sizeof(u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kmalloc( - sizeof(char) * COUNT + COUNT , ...) | kmalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kmalloc + kmalloc_array ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kmalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kmalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kmalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kmalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kmalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kmalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kmalloc(C1 * C2 * C3, ...) | kmalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kmalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kmalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kmalloc(sizeof(THING) * C2, ...) | kmalloc(sizeof(TYPE) * C2, ...) | kmalloc(C1 * C2 * C3, ...) | kmalloc(C1 * C2, ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kmalloc + kmalloc_array ( - (E1) * E2 + E1, E2 , ...) | - kmalloc + kmalloc_array ( - (E1) * (E2) + E1, E2 , ...) | - kmalloc + kmalloc_array ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-10Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds3-21/+18
Pull SCSI updates from James Bottomley: "This is mostly updates to the usual drivers: ufs, qedf, mpt3sas, lpfc, xfcp, hisi_sas, cxlflash, qla2xxx. In the absence of Nic, we're also taking target updates which are mostly minor except for the tcmu refactor. The only real core change to worry about is the removal of high page bouncing (in sas, storvsc and iscsi). This has been well tested and no problems have shown up so far" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (268 commits) scsi: lpfc: update driver version to 12.0.0.4 scsi: lpfc: Fix port initialization failure. scsi: lpfc: Fix 16gb hbas failing cq create. scsi: lpfc: Fix crash in blk_mq layer when executing modprobe -r lpfc scsi: lpfc: correct oversubscription of nvme io requests for an adapter scsi: lpfc: Fix MDS diagnostics failure (Rx < Tx) scsi: hisi_sas: Mark PHY as in reset for nexus reset scsi: hisi_sas: Fix return value when get_free_slot() failed scsi: hisi_sas: Terminate STP reject quickly for v2 hw scsi: hisi_sas: Add v2 hw force PHY function for internal ATA command scsi: hisi_sas: Include TMF elements in struct hisi_sas_slot scsi: hisi_sas: Try wait commands before before controller reset scsi: hisi_sas: Init disks after controller reset scsi: hisi_sas: Create a scsi_host_template per HW module scsi: hisi_sas: Reset disks when discovered scsi: hisi_sas: Add LED feature for v3 hw scsi: hisi_sas: Change common allocation mode of device id scsi: hisi_sas: change slot index allocation mode scsi: hisi_sas: Introduce hisi_sas_phy_set_linkrate() scsi: hisi_sas: fix a typo in hisi_sas_task_prep() ...
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