- 26 Jun, 2017 31 commits
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Uma Krishnan authored
The cxlflash driver currently lacks host management interface. Future devices supported by cxlflash will provide a variety of host-wide management functions. Examples include LUN provisioning, hardware debug support, and firmware download. In order to provide a way to manage the device, a character device will be created during probe of each adapter. This device will support a set of ioctls defined in the SISLite specification from which administrators can manage the adapter. Signed-off-by:
Uma Krishnan <ukrishn@linux.vnet.ibm.com> Acked-by:
Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Uma Krishnan authored
To date, CXL flash devices do not support a single command abort operation. Instead, the SISLite specification provides a context reset operation to cleanup all pending commands for a given context. When a context reset is successful, it is guaranteed that the AFU has aborted all currently pending I/O. This sequence is less invasive than a device or host reset and can be executed to support scsi command abort requests. Add eh_abort_handler callback support to process command timeouts and abort requests. Signed-off-by:
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Uma Krishnan authored
When the AFU is reset in an error path, pending scsi commands can be silently dropped without completion or a formal abort. This puts the onus on the cxlflash driver to notify mid-layer and indicating that the command can be retried. Once the card has been quiesced, the hardware send queue lock is acquired to prevent any data movement while the pending commands are processed. Signed-off-by:
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Uma Krishnan authored
Currently, there is no book keeping of the pending scsi commands in the cxlflash driver. This lack of tracking in-flight requests is too restrictive and requires a heavy-hammer reset each time an adapter error is encountered. Additionally, it does not allow for commands to be properly retried. In order to avoid this problem and to better handle error path command cleanup, introduce a linked list for each hardware queue that tracks pending commands. Signed-off-by:
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Uma Krishnan authored
AFU sync operations are not currently evaluated for failure. This is acceptable for paths where there is not a dependency on the AFU being consistent with the host. Examples include link reset events and LUN cleanup operations. On paths where there is a dependency, such as a LUN open, a sync failure should be acted upon. In the event of AFU sync failures, either log or cleanup as appropriate for operations that are dependent on a successful sync completion. Update documentation to reflect behavior in the event of an AFU sync failure. Signed-off-by:
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Uma Krishnan authored
A context reset failure indicates the AFU is in a bad state. At present, when such a situation occurs, no further action is taken. This leaves the adapter in an unusable state with no recoverable actions. To avoid this situation, context reset failures will be escalated to a host reset operation. This will be done asynchronously to allow the acting thread to return to the user with a failure. Signed-off-by:
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Uma Krishnan authored
Per the SISLite specification, context_reset() writes 0x1 to the LSB of the reset register. When the AFU processes this reset request, it is expected to clear the bit after reset is complete. The current implementation simply checks that the entire value read back is not 1, instead of masking off the LSB and evaluating it for a change to 0. Should the AFU manipulate other bits during the reset (reading back a value of 0xF for example), successful completion will be prematurely indicated given the existing logic. Additionally, in the event that the context reset operation fails, there does not currently exist a way to provide feedback to the initiator of the reset. This poses a problem for the rare case that a context reset fails as the caller will proceed on the assumption that all is well. To remedy these issues, refactor the context reset routine to only mask off the LSB when evaluating for success and return status to the caller. Also update the context reset handler parameters to pass a hardware queue reference instead of a single command to better reflect that the entire queue associated with the context is impacted by the reset. Signed-off-by:
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Uma Krishnan authored
The cxlflash_afu_sync() routine returns a negative one to indicate any kind of failure. This makes it impossible to establish why the error occurred. Update the return codes to clearly indicate the failure cause to the caller. Signed-off-by:
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Uma Krishnan authored
Currently there are separate spin locks for the two supported I/O queueing models. This makes it difficult to serialize with paths outside the enqueue path. As a design simplification and to support serialization with enqueue operations, move to only a single lock that is used for enqueueing regardless of the queueing model. Signed-off-by:
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Christoph Hellwig authored
Use dma_alloc_attrs directly instead of the dma_alloc_noncoherent wrapper. [mkp: fixed driver name] Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Christoph Hellwig authored
Use dma_alloc_attrs directly instead of the dma_alloc_noncoherent wrapper. Signed-off-by:
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Christos Gkekas authored
Variable idx is defined as u16 thus statement (idx < 0) is always false and should be removed. Signed-off-by:
Christos Gkekas <chris.gekas@gmail.com> Acked-by:
Manish Rangankar <Manish.Rangankar@cavium.com> Signed-off-by:
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Colin Ian King authored
Trivial fix to spelling mistake in dev_info message Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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John Garry authored
Element phy_type is a bitmask and it only ever has 2 bits possibly set, and it is overkill to define as a u64, so redefine as a u32. This change resolves static code check complaint that "phy->phy_type &= ~PORT_TYPE_SAS;" would unintentionally clear the high 32 bits as well. Structure hisi_sas_phy is also reordered to ensure packing efficiency. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
John Garry <john.garry@huawei.com> Signed-off-by:
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Bart Van Assche authored
The symbolic name VLC_SA_RECEIVE_CREDENTIAL is not used anywhere in the kernel. Additionally, since SPC 5 the RECEIVE CREDENTIAL command is obsolete. The VLC_SA_RECEIVE_CREDENTIAL definition is misleading since it occurs outside the list of other variable length CDB service action codes (READ_32, WRITE_32, ...). Hence remove this definition. References: commit e9ccc998 ("[SCSI] Add missing SPC-4 CDB and MAINTENANCE_[IN,OUT] service action definitions") Signed-off-by:
Bart Van Assche <bart.vanassche@wdc.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Seth Forshee authored
Both aac_send_raw_srb() and aac_get_hba_info() may copy stack allocated structs to userspace without initializing all members of these structs. Clear out this memory to prevent information leaks. Fixes: 423400e6 ("scsi: aacraid: Include HBA direct interface") Fixes: c799d519 ("scsi: aacraid: Retrieve HBA host information ioctl") Signed-off-by:
Seth Forshee <seth.forshee@canonical.com> Reviewed-by:
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Dan Carpenter authored
If bnx2i_map_ep_dbell_regs() then we accidentally return NULL instead of an error pointer. It results in a NULL dereference in iscsi_if_ep_connect(). Fixes: cf4e6363 ("[SCSI] bnx2i: Add bnx2i iSCSI driver.") Signed-off-by:
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Colin Ian King authored
The function hptiop_iop_request_callback_itl does not need to be in global scope, so make it static. Cleans up sparse warning: "symbol 'hptiop_iop_request_callback_itl' was not declared. Should it be static?" Signed-off-by:
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Varun Prakash authored
Assign rxq to TCP connections in round robin mode to use all available rxqs. Signed-off-by:
Varun Prakash <varun@chelsio.com> Signed-off-by:
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Tyrel Datwyler authored
Signed-off-by:
Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Reviewed-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
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James Smart authored
A change in remote port removal introduced a spurious put which can cause a premature structure teardown. The affects were most notable when the driver attempted to unload as a null pointer would be hit. Fix by removing the unnecessary put. Signed-off-by:
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James Smart authored
On link down, transport is calling driver to abort outstanding ios. Driver erroneously rejects the abort if the port indicates it isn't logged in - which will be the case after the link down. Thus, the io can't clean up. This prevents reconnection at the transport level. Fix by allowing abort to proceed. Signed-off-by:
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Paolo Bonzini authored
virtio_scsi tries to do exception handling after the default 30 seconds timeout expires. However, it's better to let the host control the timeout, otherwise with a heavy I/O load it is likely that an abort will also timeout. This leads to fatal errors like filesystems going offline. Disable the 'sd' timeout and allow the host to do exception handling, following the precedent of the storvsc driver. Hannes has a proposal to introduce timeouts in virtio, but this provides an immediate solution for stable kernels too. [mkp: fixed typo] Reported-by:
Douglas Miller <dougmill@linux.vnet.ibm.com> Cc: "James E.J. Bottomley" <jejb@linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Hannes Reinecke <hare@suse.de> Cc: linux-scsi@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Johannes Berg authored
There's no need to use the static UTS_RELEASE string, since utsname()->release contains the same. This avoids rebuilding this file for every change of the release string. Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Reviewed-by:
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Kefeng Wang authored
After commit 556e26a7 ("scsi: remove tsk_mgmt_response and it_nexus_response transport methods"), the target driver support was removed totally. Drop the residual. Signed-off-by:
Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by:
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Varun Prakash authored
Add -ko to the module version similar to module version of other Chelsio drivers. Signed-off-by:
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Martin K. Petersen authored
Avoid unnecessary snprintf() when formatting variables for display in sysfs and switch to sysfs_match_string() for validating user input. Reviewed-by:
Bart Van Assche <Bart.VanAssche@sandisk.com> Signed-off-by:
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Christoph Hellwig authored
Since 9c58b395 ("scsi: scsi_devinfo: remove synchronous ALUA for NETAPP devices") this code is unused. Signed-off-by:
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Christoph Hellwig authored
Signed-off-by:
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Long Li authored
FC disks issue I/O directly to the host storage port driver, this is diffirent to VHD disks where I/O is virtualized and timeout is handled by the host VSP (Virtualization Service Provider). FC disks are usually setup in a multipath system, and they don't want to reset timer on I/O timeout. Timeout is detected by multipath as a good time to failover and recover. Signed-off-by:
Long Li <longli@microsoft.com> Signed-off-by:
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Colin Ian King authored
The fields sense_data_size and sense_data are unitialized garbage from the stack and are being copied back to userspace. Fix this leak of stack information by ensuring they are zero'd. Detected by CoverityScan, CID#1435473 ("Uninitialized scalar variable") Fixes: 423400e6 ("scsi: aacraid: Include HBA direct interface") Signed-off-by:Dave Carroll <david.carroll@microsemi.com> Signed-off-by:
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- 20 Jun, 2017 9 commits
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James Smart authored
Set lpfc driver revision to 11.4.0.1 Signed-off-by:
Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by:
Hannes Reinecke <hare@suse.com> Signed-off-by:
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James Smart authored
Beacon OFF from switch is rejected by driver. Driver fails Beacon OFF if frequency is set to 0. As per fc-ls spec, status, capability, frequency and duration fields are only applicable for Beacon ON. Remove frequency and type checks. Reject Beacon ON if duration is non zero. Signed-off-by:
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James Smart authored
When running nvme detach-ns /dev/nvme0n1 -n 1 command, the nvmet lpfc driver crashes with this stack dump: kernel BUG at /root/NVME/lpfc_8.4/lpfc_sli.c:1393! invalid opcode: 0000 [#1] SMP Workqueue: nvmet-fc-cpu0 nvmet_fc_do_work_on_cpu [nvmet_fc] lpfc_sli4_issue_wqe+0x357/0x440 [lpfc] lpfc_nvmet_xmt_fcp_abort+0x36b/0x5c0 [lpfc] nvmet_fc_abort_op+0x30/0x50 [nvmet_fc] nvmet_fc_do_work_on_cpu+0xd9/0x130 [nvmet_fc] process_one_work+0x14e/0x410 worker_thread+0x116/0x490 kthread+0xc7/0xe0 ret_from_fork+0x3f/0x70 Crash is due to an uninitialized iocbq->vport pointer. Explicitly set the iocbq->vport field to phba->pport in lpfc_nvmet_sol_fcp_issue_abort as it does all abort iocbq initialization in the routine. Using phba->pport is ok because target does not support NPIV instances. Signed-off-by:
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James Smart authored
During every reset, IOCBs are allocated. So, at one point, number of allocated IOCBs reaches maximum limit and lpfc_sli_next_iotag fails. Allocate IOCBs only during initialization. Reuse them after every reset instead of allocating new set of IOCBs. Signed-off-by:
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James Smart authored
OS crashes after the completion of firmware download. Failure in posting SCSI SGL buffers because number of SGL buffers is less than total count. Some of the pending IOs are not completed by driver. SGL buffers for these IOs are not added back to the list. Pending IOs are not completed because lpfc_wq_list list is initialized before completion of pending IOs. Postpone lpfc_wq_list reinitialization by moving lpfc_sli4_queue_destroy() after lpfc_hba_down_post(). Signed-off-by:
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James Smart authored
In a server with an 8G adapter and a 32G adapter, running NVME and FCP, the server would crash with the following stack. RIP: 0010: ... lpfc_nvme_register_port+0x38/0x420 [lpfc] lpfc_nlp_state_cleanup+0x154/0x4f0 [lpfc] lpfc_nlp_set_state+0x9d/0x1a0 [lpfc] lpfc_cmpl_prli_prli_issue+0x35f/0x440 [lpfc] lpfc_disc_state_machine+0x78/0x1c0 [lpfc] lpfc_cmpl_els_prli+0x17c/0x1f0 [lpfc] lpfc_sli_sp_handle_rspiocb+0x39b/0x6b0 [lpfc] lpfc_sli_handle_slow_ring_event_s3+0x134/0x2d0 [lpfc] lpfc_work_done+0x8ac/0x13b0 [lpfc] lpfc_do_work+0xf1/0x1b0 [lpfc] Crash, on the 8G adapter, is due to a vport which does not have a nvme local port structure. It's not supposed to have one. NVME is not supported on the 8G adapter, so the NVME PRLI, which started this flow shouldn't have been sent in the first place. Correct discovery engine to recognize when on an SLI3 rport, which doesn't support SLI3, if the rport supports only NVME, don't send a NVME PRLI. Instead, as no FC4 will be used, a LOGO is sent. If rport is FCP and NVME, only execute the SCSI PRLI. Signed-off-by:
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James Smart authored
Since unsol rcv ISR and command cmpl ISR both access/lock this list, separate get/put lists will reduce contention. Replaced struct list_head lpfc_nvmet_ctx_list; with struct list_head lpfc_nvmet_ctx_get_list; struct list_head lpfc_nvmet_ctx_put_list; and all correpsonding locks and counters. Signed-off-by:
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James Smart authored
Removed unnecessary bzero of context area. Due to size of sg list, added a substantial delay and played havoc on cpu caches. Signed-off-by:
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James Smart authored
Vport creation fails for SLI-3 adapters. Mailbox submission fails because mailbox interrupt is disabled. Mailbox interrupt is disabled during port reset. Do reset only for physical port. Signed-off-by:
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