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2017-01-06scsi: hisi_sas: lock sensitive region in hisi_sas_slot_abort()John Garry1-0/+3
When we call hisi_sas_slot_task_free() we should grab the hisi_hba.lock, as hisi_sas_slot_task_free() accesses common hisi_hba elements. Function hisi_sas_slot_abort() is missing this, so add it. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: hisi_sas: lock sensitive regions when servicing CQ interruptJohn Garry2-0/+4
There is a bug in the current driver in that certain hisi_hba and port structure elements which we access when servicing the CQ interrupt do not use thread-safe accesses; these include hisi_sas_port linked-list of active slots (hisi_sas_port.entry), bitmap of currently allocated IPTT (in hisi_hba.slot_index_tags), and completion queue read pointer. As a solution, lock these elements with the hisi_hba.lock. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: hisi_sas: service v2 hw CQ ISR with taskletJohn Garry2-6/+19
Currently the all the slot processing for the completion queue is done in ISR context. It is judged that the slot processing can take a long time, especially when a SATA NCQ completes (upto 32 slots). So, as a solution, defer the bulk of the ISR processing to tasklet context. Each CQ will have its down tasklet. Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Xiang Chen <chenxiang66@hisilicon.com> Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs-qcom: Fix module autoloadJavier Martinez Canillas1-0/+1
If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module. Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/scsi/ufs/ufs-qcom.ko | grep alias $ After this patch: $ modinfo drivers/scsi/ufs/ufs-qcom.ko | grep alias alias: of:N*T*Cqcom,ufshcC* alias: of:N*T*Cqcom,ufshc Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: Improve fatal error logsDolev Raviv2-42/+208
Errors such as UIC error, illegal OCS values, and others may require more information for debugging. Such information could be hibern8 events, events sequences, recoverable errors, error history, and more. This patch improves tracking of important errors and events in debug level to be enabled when debugging a such issues. It includes: * UIC error history * Successful hibern8 events * Successful command after hibern8 exit * Clk-freq info * Failed device command * Infrastructure for dumping host controller debug information Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: add trace event for ufs commandsLee Susman2-1/+79
Use the ftrace infrastructure to conditionally trace ufs command events. New trace event is created, which samples the following ufs command data: - device name - optional identification string - task tag - doorbell register - number of transfer bytes - interrupt status register - request start LBA - command opcode Currently we only fully trace read(10) and write(10) commands. All other commands which pass through ufshcd_send_command() will be printed with "-1" in the lba and transfer_len fields. Usage: echo 1 > /sys/kernel/debug/tracing/events/ufs/enable cat /sys/kernel/debug/tracing/trace_pipe Signed-off-by: Lee Susman <lsusman@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: add time profiling supportsubhashj@codeaurora.org2-0/+64
This patch adds the profiling support for some of the time critical operations like hibern8 enter/exit, clock gating & clock scaling. Reviewed-by: Venkat Gopalakrishnan <venkatg@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: fix setting init power modesubhashj@codeaurora.org1-3/+4
Immediately after successful UFS link startup, UFS link power mode would be in PWM-G1, 1-lane, SLOW-AUTO mode. But currently we are doing few of the DME local/peer attributes access before setting the "hba->pwr_info" to default power mode. If we are doing link startup as part of error recovery then old power mode might be set to FAST mode and doing DME peer access (after link startup but before updating "hba->pwr_info" to default power mode) unintentionally tries to switch from FAST to FAST_AUTO mode (if UFSHCD_QUIRK_DME_PEER_ACCESS_AUTO_MODE quirk is enabled). Above issue is fixed by setting the default power mode immediately after successful link startup. Reviewed-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: add capability to keep auto bkops always enabledsubhashj@codeaurora.org2-11/+35
UFS device requires to perform bkops (back ground operations) periodically but host can control (via auto-bkops parameter of device) when device can perform bkops based on its performance requirements. In general, host would like to enable the device's auto-bkops only when it's not doing any regular data transfer but sometimes device may not behave properly if host keeps the auto-bkops disabled. This change adds the capability to let the device auto-bkops always enabled except suspend. Reviewed-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: set default UFS power management levelsubhashj@codeaurora.org1-0/+28
UFS device and link can be put in multiple different low power modes hence UFS driver supports multiple different low power modes. This change sets the default UFS power management level which should put the link hibernate state and device in sleep state. This default power management level gives good power savings with relatively less enter/exit latencies. Reviewed-by: Yaniv Gardi <ygardi@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: provide sysfs attribute to select the PM levelsubhashj@codeaurora.org2-0/+146
This patch provides the sysfs attribute to choose the power management level for UFS runtime and system suspend. Reviewed-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: Add sysfs node to dynamically control clock scalingSahitya Tummala2-17/+82
Provide an option to enable/disable clock scaling during runtime. Write 1/0 to "clkscale_enable" sysfs node to enable/disable clock scaling. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: Add sysfs node to dynamically control clock gatingSahitya Tummala2-1/+51
Provide an option to enable/disable clock gating during runtime. Write 1 or 0 to "clkgate_enable" sysfs node to enable/disable clock gating. Signed-off-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: fix multiple ufs spec violationDolev Raviv1-1/+12
When a command to a W-LU is timed out via scsi, error handling will treat it as any other LU and send commands such as START_STOP with wrong format or task abort. Those commands are illegal for W-LU according to the UFS spec. To solve it, when an error is recognized those steps are skipped and the last step, reset and restore process, is initiated. Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: add tracing supportsubhashj@codeaurora.org2-12/+258
This change adds the ftrace support for following: 1. UFS initialization time 2. Clock gating states 3. Clock scaling states 4. Power management APIs latency 5. BKOPs enable/disable Usage: echo 1 > /sys/kernel/debug/tracing/events/ufs/enable cat /sys/kernel/debug/tracing/trace_pipe Reviewed-by: Sahitya Tummala <stummala@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-06scsi: ufs: dump debug info during failuresDolev Raviv2-0/+132
Inserts driver dumps for UFS Host Controller registers, Transfer Requests and Task Management Requests. The dumps will occur on driver initialization failure, ufshcd_abort() and on error handling path. Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: qla4xxx: comments correctionCao jin1-3/+3
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Acked-by: Nilesh Javali <nilesh.javali@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: qedi: return via va_end to match corresponding va_startColin Ian King1-3/+6
Although on most systems va_end is a no-op, it is good practice to use va_end on the function return path, especially since the va_start documenation states: "Each invocation of va_start() must be matched by a corresponding invocation of va_end() in the same function." Found with static analysis by CoverityScan, CIDs 1389477-1389479 Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: Manish Rangankar <manish.rangankar@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Update driver versionJitendra Bhivare1-1/+1
Version 11.2.1.0 Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Add warning message for unsupported adapterKetan Mukadam2-1/+4
Add a warning message to indicate obsolete/unsupported BE2 Adapter Family devices Signed-off-by: Ketan Mukadam <ketan.mukadam@avagotech.com> Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Reinit SGL handle, CID tables after TPEJitendra Bhivare1-41/+20
After TPE recovery, CID table needs to be repopulated as per CIDs in WRBQ creation responses. SGL handles table needs to be recreated for posting and its indices need to be resetted. This is achieved by calling beiscsi_cleanup_port when disabling and beiscsi_init_port in enabling port. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Add checks to validate CID alloc/freeJitendra Bhivare3-84/+87
Set CID slot to 0xffff to indicate empty. Check if connection already exists in conn_table before binding. Check if endpoint already NULL before putting back CID. Break ep->conn link in free_ep to ignore completions after freeing. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Remove wq_name from beiscsi_hbaJitendra Bhivare2-5/+5
wq_name is used only to set WQ name when its being allocated. Remove it from beiscsi_hba structure and define locally. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Remove unused struct membersJitendra Bhivare8-124/+21
Fix errors reported in static analysis. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Remove redundant receive buffers postingJitendra Bhivare1-8/+0
This duplicate code got added during manual merging. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Fix iSCSI cmd cleanup IOCTLJitendra Bhivare2-17/+19
Prepare the IOCTL with appropriate sizes of buffers of V0 and V1. Set missing chute number in V1 IOCTL. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Add checks to validate completionsJitendra Bhivare1-7/+21
Added check in beiscsi_process_cq for pio_handle. pio_handle is cleared in beiscsi_put_wrb_handle. This catches any case where task gets cleaned up just before completion. Use back_lock before accessing pio_handle. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Set WRB invalid bit for SkyHawkJitendra Bhivare2-6/+15
invalid bit in WRB indicates to FW that IO was invalidated before WRB was fetched from host memory. For SkyHawk, this invalid bit in WRB is at a different offset. Use amap_iscsi_wrb_v2 to mark invalid bit for SkyHawk. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Take iscsi_task ref in abort handlerJitendra Bhivare1-26/+19
Hold the reference of iscsi_task till invalidation completes. This prevents use of ICD when invalidation of that ICD is being processed. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Fix for crash in beiscsi_eh_device_resetJitendra Bhivare3-122/+114
System crashes when sg_reset is executed in a loop. CPU: 13 PID: 7073 Comm: sg_reset Tainted: G E 4.8.0-rc1+ #4 RIP: 0010:[<ffffffffa0825370>] [<ffffffffa0825370>] beiscsi_eh_device_reset+0x160/0x520 [be2iscsi] Call Trace: [<ffffffff814c7c77>] ? scsi_host_alloc_command+0x47/0xc0 [<ffffffff814caafa>] scsi_try_bus_device_reset+0x2a/0x50 [<ffffffff814cb46e>] scsi_ioctl_reset+0x13e/0x260 [<ffffffff814ca477>] scsi_ioctl+0x137/0x3d0 [<ffffffffa05e4ba2>] sg_ioctl+0x572/0xc20 [sg] [<ffffffff8123f627>] do_vfs_ioctl+0xa7/0x5d0 The accesses to beiscsi_io_task is being protected in device reset handler with frwd_lock but the freeing of task can happen under back_lock. Hold the reference of iscsi_task till invalidation completes. This prevents use of ICD when invalidation of that ICD is being processed. Use frwd_lock for iscsi_tasks looping and back_lock to access beiscsi_io_task structures. Rewrite mgmt_invalidation_icds to handle allocation and freeing of IOCTL buffer in one place. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: be2iscsi: Fix use of invalidate command table reqJitendra Bhivare4-70/+83
Remove shared structure inv_tbl in phba for all sessions to post invalidation IOCTL. Always allocate and then free the table after use in reset handler. Abort handler needs just one instance so define it on stack. Add checks for BE_INVLDT_CMD_TBL_SZ to not exceed invalidation command table size in IOCTL. Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: dpt_i2o: double free if adpt_i2o_online_hba() failsDan Carpenter1-6/+2
There are two places where adpt_i2o_online_hba() is called. Both callers call adpt_i2o_delete_hba(pHba) if adpt_i2o_online_hba() fails and since we also free it here that causes a double free bug. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: mptlan: Remove linux/miscdevice.h from mptlan.hCorentin Labbe1-1/+0
This patch remove linux/miscdevice.h from mptlan.h since mptlan.h does not contain any miscdevice. The only user of it is mptctl.c which already include linux/miscdevice.h So no need to include it twice. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: cciss: use designated initializersKees Cook1-15/+15
Prepare to mark sensitive kernel structures for randomization by making sure they're using designated initializers. These were identified during allyesconfig builds of x86, arm, and arm64, with most initializer fixes extracted from grsecurity. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: hpsa: use designated initializersKees Cook1-20/+20
Prepare to mark sensitive kernel structures for randomization by making sure they're using designated initializers. These were identified during allyesconfig builds of x86, arm, and arm64, with most initializer fixes extracted from grsecurity. Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: lpfc version change to 11.2.0.4James Smart1-1/+1
lpfc version change to 11.2.0.4 Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Add missing memory barrierJames Smart1-0/+2
On loosely ordered memory systems (PPC for example), the WQE elements were being updated in memory, but not necessarily flushed before the separate doorbell was written to hw which would cause hw to dma the WQE element. Thus, the hardware occasionally received partially updated WQE data. Add the memory barrier after updating the WQE memory. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Correct oops on vport port resetsJames Smart1-3/+4
Correct oops on vport port resets. Incorrect WQE type, thus the clearing code actually overstepped the WQE. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Deprecate lpfc_prot_sg_seg_cnt parameterJames Smart2-11/+0
Deprecate lpfc_prot_sg_seg_cnt parameter. Eliminates driver from unnecessarily limiting DIF s/g list length. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Fix Xlane dynamic LUN set for LUN priority.James Smart3-17/+31
Fix Xlane dynamic LUN set for LUN priority. Dynamic changing of the priority was not getting reflected on the LUN. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: FCoE VPort enable-disable does not bring up the VPortJames Smart1-0/+8
FCoE VPort enable-disable does not bring up the VPort. VPI structure needed to be initialized before being re-registered. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Correct host name in symbolic_name fieldJames Smart1-0/+17
Correct host name in symbolic_name field of nameserver registrations Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Correct issue leading to oops during link resetJames Smart1-0/+1
Correct issue leading to oops during link reset. Missing vport pointer. [mkp: fixed typo] Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Deprecate lpfc_soft_wwn parameterJames Smart3-233/+3
Deprecate lpfc_soft_wwn parameter. No longer allow override of hw-assigned wwns Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Correct error in setting OS Driver Version with FWJames Smart1-1/+2
Correct error in setting OS Driver Version with FW. Prior length was too short. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@Suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: lpfc: Clear the VendorVersion in the PLOGI/PLOGI ACC payloadJames Smart2-0/+12
Clear the VendorVersion in the PLOGI/PLOGI ACC payload Vendor version info may have been set on fabric login. Before sending PLOGI payloads, ensure that it's cleared. Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: storvsc: properly set residual data length on errorsLong Li1-3/+13
On I/O errors, the Windows driver doesn't set data_transfer_length on error conditions other than SRB_STATUS_DATA_OVERRUN. In these cases we need to set data_transfer_length to 0, indicating there is no data transferred. On SRB_STATUS_DATA_OVERRUN, data_transfer_length is set by the Windows driver to the actual data transferred. Reported-by: Shiva Krishna <Shiva.Krishna@nimblestorage.com> Signed-off-by: Long Li <longli@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: storvsc: properly handle SRB_ERROR when sense message is presentLong Li1-0/+7
When sense message is present on error, we should pass along to the upper layer to decide how to deal with the error. This patch fixes connectivity issues with Fiber Channel devices. Signed-off-by: Long Li <longli@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: storvsc: use tagged SRB requests if supported by the deviceLong Li1-0/+9
Properly set SRB flags when hosting device supports tagged queuing. This patch improves the performance on Fiber Channel disks. Signed-off-by: Long Li <longli@microsoft.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Cc: <stable@vger.kernel.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05scsi: storvsc: Enable multi-queue supportK. Y. Srinivasan1-3/+110
Enable multi-q support. We will allocate the outgoing channel using the following policy: 1. We will make every effort to pick a channel that is in the same NUMA node that is initiating the I/O 2. The mapping between the guest CPU and the outgoing channel is persistent. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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