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* Merge tag 'for-linus-5.1a-rc1-tag' of ↵Linus Torvalds2019-03-111-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: "xen fixes and features: - remove fallback code for very old Xen hypervisors - three patches for fixing Xen dom0 boot regressions - an old patch for Xen PCI passthrough which was never applied for unknown reasons - some more minor fixes and cleanup patches" * tag 'for-linus-5.1a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: fix dom0 boot on huge systems xen, cpu_hotplug: Prevent an out of bounds access xen: remove pre-xen3 fallback handlers xen/ACPI: Switch to bitmap_zalloc() x86/xen: dont add memory above max allowed allocation x86: respect memory size limiting via mem= parameter xen/gntdev: Check and release imported dma-bufs on close xen/gntdev: Do not destroy context while dma-bufs are in use xen/pciback: Don't disable PCI_COMMAND on PCI device reset. xen-scsiback: mark expected switch fall-through xen: mark expected switch fall-through
| * xen-scsiback: mark expected switch fall-throughGustavo A. R. Silva2019-02-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warning: drivers/xen/xen-scsiback.c: In function ‘scsiback_frontend_changed’: drivers/xen/xen-scsiback.c:1185:6: warning: this statement may fall through [-Wimplicit-fallthrough=] if (xenbus_dev_is_online(dev)) ^ drivers/xen/xen-scsiback.c:1188:2: note: here case XenbusStateUnknown: ^~~~ Warning level 3 was used: -Wimplicit-fallthrough=3 Notice that, in this particular case, the code comment is modified in accordance with what GCC is expecting to find. This patch is part of the ongoing efforts to enable -Wimplicit-fallthrough. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Juergen Gross <jgross@suse.com>
* | scsi: target/core: Remove the write_pending_status() callback functionBart Van Assche2019-02-041-6/+0
|/ | | | | | | | | | | | | | | | | | | | | | Due to the patch that makes TMF handling synchronous the write_pending_status() callback function is no longer called. Hence remove it. Acked-by: Felipe Balbi <balbi@ti.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Andy Grover <agrover@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Himanshu Madhani <himanshu.madhani@qlogic.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: target: replace fabric_ops.name with fabric_aliasDavid Disseldorp2018-11-281-1/+0
| | | | | | | | | | | | | | iscsi_target_mod is the only LIO fabric where fabric_ops.name differs from the fabric_ops.fabric_name string. fabric_ops.name is used when matching target/$fabric ConfigFS create paths, so rename it .fabric_alias and fallback to target/$fabric vs .fabric_name comparison if .fabric_alias isn't initialised. iscsi_target_mod is the only fabric module to set .fabric_alias . All other fabric modules rely on .fabric_name matching and can drop the duplicate string. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: target: drop unnecessary get_fabric_name() accessor from fabric_opsDavid Disseldorp2018-11-281-6/+1
| | | | | | | | | | | | | | | All fabrics return a const string. In all cases *except* iSCSI the get_fabric_name() string matches fabric_ops.name. Both fabric_ops.get_fabric_name() and fabric_ops.name are user-facing, with the former being used for PR/ALUA state and the latter for ConfigFS (config/target/$name), so we unfortunately need to keep both strings around for now. Replace the useless .get_fabric_name() accessor function with a const string fabric_name member variable. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2018-08-151-10/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI updates from James Bottomley: "This is mostly updates to the usual drivers: mpt3sas, lpfc, qla2xxx, hisi_sas, smartpqi, megaraid_sas, arcmsr. In addition, with the continuing absence of Nic we have target updates for tcmu and target core (all with reviews and acks). The biggest observable change is going to be that we're (again) trying to switch to mulitqueue as the default (a user can still override the setting on the kernel command line). Other major core stuff is the removal of the remaining Microchannel drivers, an update of the internal timers and some reworks of completion and result handling" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (203 commits) scsi: core: use blk_mq_run_hw_queues in scsi_kick_queue scsi: ufs: remove unnecessary query(DM) UPIU trace scsi: qla2xxx: Fix issue reported by static checker for qla2x00_els_dcmd2_sp_done() scsi: aacraid: Spelling fix in comment scsi: mpt3sas: Fix calltrace observed while running IO & reset scsi: aic94xx: fix an error code in aic94xx_init() scsi: st: remove redundant pointer STbuffer scsi: qla2xxx: Update driver version to 10.00.00.08-k scsi: qla2xxx: Migrate NVME N2N handling into state machine scsi: qla2xxx: Save frame payload size from ICB scsi: qla2xxx: Fix stalled relogin scsi: qla2xxx: Fix race between switch cmd completion and timeout scsi: qla2xxx: Fix Management Server NPort handle reservation logic scsi: qla2xxx: Flush mailbox commands on chip reset scsi: qla2xxx: Fix unintended Logout scsi: qla2xxx: Fix session state stuck in Get Port DB scsi: qla2xxx: Fix redundant fc_rport registration scsi: qla2xxx: Silent erroneous message scsi: qla2xxx: Prevent sysfs access when chip is down scsi: qla2xxx: Add longer window for chip reset ...
| * scsi: target: loop, usb, vhost, xen: use target_remove_sessionMike Christie2018-08-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This converts drivers that were only calling transport_deregister_session to use target_remove_session. The calling of transport_deregister_session_configfs via target_remove_session for these types of drivers is ok, because they were not exporting info from fields like sess_acl_list, sess->se_tpg and sess->fabric_sess_ptr from configfs accessible functions, so they will see no difference. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: target: rename target_alloc_sessionMike Christie2018-08-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename target_alloc_session to target_setup_session to avoid confusion with the other transport session allocation function that only allocates the session and because the target_alloc_session does so much more. It allocates the session, sets up the nacl and registers the session. The next patch will then add a remove function to match the setup in this one, so it should make sense for all drivers, except iscsi, to just call those 2 functions to setup and remove a session. iscsi will continue to be the odd driver. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Chris Boot <bootc@bootc.net> Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com> Cc: <qla2xxx-upstream@qlogic.com> Cc: Johannes Thumshirn <jth@kernel.org> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: target: Remove second argument from fabric_make_tpg()Bart Van Assche2018-07-021-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Since most target drivers do not use the second fabric_make_tpg() argument ("group") and since it is trivial to derive the group pointer from the wwn pointer, do not pass the group pointer to fabric_make_tpg(). Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Mike Christie <mchristi@redhat.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: target: Convert target drivers to use sbitmapMatthew Wilcox2018-06-191-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sbitmap and the percpu_ida perform essentially the same task, allocating tags for commands. The sbitmap outperforms the percpu_ida as documented here: https://lkml.org/lkml/2014/4/22/553 The sbitmap interface is a little harder to use, but being able to remove the percpu_ida code and getting better performance justifies the additional complexity. Signed-off-by: Matthew Wilcox <willy@infradead.org> Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> # f_tcm Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: target: Abstract tag freeingMatthew Wilcox2018-06-191-3/+1
| | | | | | | | | | | | | | | | Introduce target_free_tag() and convert all drivers to use it. Signed-off-by: Matthew Wilcox <willy@infradead.org> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | xen/scsiback: add error handling for xenbus_printfZhouyang Jia2018-06-191-3/+13
|/ | | | | | | | | | | When xenbus_printf fails, the lack of error-handling code may cause unexpected results. This patch adds error-handling code after calling xenbus_printf. Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
* xen/scsiback: Make TMF processing slightly fasterBart Van Assche2017-07-061-1/+1
| | | | | | | | | | | | | | | | | | Target drivers must guarantee that struct se_cmd and struct se_tmr_req exist as long as target_tmr_work() is in progress. Since the last access by the LIO core is a call to .check_stop_free() and since the Xen scsiback .check_stop_free() drops a reference to the TMF, it is already guaranteed that the struct se_cmd that corresponds to the TMF exists as long as target_tmr_work() is in progress. Hence change the second argument of transport_generic_free_cmd() from 1 into 0. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Cc: xen-devel@lists.xenproject.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* xen/scsiback: Replace a waitqueue and a counter by a completionBart Van Assche2017-07-061-7/+4
| | | | | | | | | | | | | This patch simplifies the implementation of the scsiback driver but does not change its behavior. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Cc: xen-devel@lists.xenproject.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* xen/scsiback: Fix a TMR related use-after-freeBart Van Assche2017-07-061-24/+9
| | | | | | | | | | | | | | | | scsiback_release_cmd() must not dereference se_cmd->se_tmr_req because that memory is freed by target_free_cmd_mem() before scsiback_release_cmd() is called. Fix this use-after-free by inlining struct scsiback_tmr into struct vscsibk_pend. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Cc: xen-devel@lists.xenproject.org Cc: <stable@vger.kernel.org> # 3.18+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* target: make close_session optionalChristoph Hellwig2016-05-101-5/+0
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* target: make ->shutdown_session optionalChristoph Hellwig2016-05-101-6/+0
| | | | | | | | | | | | | | Turns out the template and thus many drivers got the return value wrong: 0 means the fabrics driver needs to put a session reference, which no driver except for the iSCSI target drivers did. Fortunately none of these drivers supports explicit Node ACLs, so the bug was harmless. Even without that only qla2xxx and iscsi every did real work in shutdown_session, so get rid of the boilerplate code in all other drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* Merge branch 'for-next' of ↵Linus Torvalds2016-03-221-142/+139
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "The highlights this round include: - Add target_alloc_session() w/ callback helper for doing se_session allocation + tag + se_node_acl lookup. (HCH + nab) - Tree-wide fabric driver conversion to use target_alloc_session() - Convert sbp-target to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Chris Boot + nab) - Convert usb-gadget to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Andrzej Pietrasiewicz + nab) - Convert xen-scsiback to use percpu_ida tag pre-allocation, and TARGET_SCF_ACK_KREF I/O krefs (Juergen Gross + nab) - Convert tcm_fc to use TARGET_SCF_ACK_KREF I/O + TMR krefs - Convert ib_srpt to use percpu_ida tag pre-allocation - Add DebugFS node for qla2xxx target sess list (Quinn) - Rework iser-target connection termination (Jenny + Sagi) - Convert iser-target to new CQ API (HCH) - Add pass-through WRITE_SAME support for IBLOCK (Mike Christie) - Introduce data_bitmap for asynchronous access of data area (Sheng Yang + Andy) - Fix target_release_cmd_kref shutdown comp leak (Himanshu Madhani) Also, there is a separate PULL request coming for cxgb4 NIC driver prerequisites for supporting hw iscsi segmentation offload (ISO), that will be the base for a number of v4.7 developments involving iscsi-target hw offloads" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (36 commits) target: Fix target_release_cmd_kref shutdown comp leak target: Avoid DataIN transfers for non-GOOD SAM status target/user: Report capability of handling out-of-order completions to userspace target/user: Fix size_t format-spec build warning target/user: Don't free expired command when time out target/user: Introduce data_bitmap, replace data_length/data_head/data_tail target/user: Free data ring in unified function target/user: Use iovec[] to describe continuous area target: Remove enum transport_lunflags_table target/iblock: pass WRITE_SAME to device if possible iser-target: Kill the ->isert_cmd back pointer in struct iser_tx_desc iser-target: Kill struct isert_rdma_wr iser-target: Convert to new CQ API iser-target: Split and properly type the login buffer iser-target: Remove ISER_RECV_DATA_SEG_LEN iser-target: Remove impossible condition from isert_wait_conn iser-target: Remove redundant wait in release_conn iser-target: Rework connection termination iser-target: Separate flows for np listeners and connections cma events iser-target: Add new state ISER_CONN_BOUND to isert_conn ...
| * xen-scsiback: Convert to TARGET_SCF_ACK_KREF I/O krefsNicholas Bellinger2016-03-101-28/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts xen-scsiback to modern TARGET_SCF_ACK_KREF usage for scsiback_cmd_done() callback path. It also also converts TMR -> scsiback_device_action() to use modern target_submit_tmr() code. Acked-by: Juergen Gross <jgross@suse.com> Tested-by: Juergen Gross <jgross@suse.com> Cc: Hannes Reinecke <hare@suse.de> Cc: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * xen-scsiback: Convert to percpu_ida tag allocationNicholas Bellinger2016-03-101-78/+89
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts xen-scsiback to use percpu_ida tag pre-allocation for struct vscsibk_pend descriptor, in order to avoid fast-path struct vscsibk_pend memory allocations. Note by default this is currently hardcoded to 128. (Add wrapper for handling pending_req tag failure - Juergen) (Drop left-over se_cmd memset in scsiback_cmd_exec - Juergen) Acked-by: Juergen Gross <jgross@suse.com> Tested-by: Juergen Gross <jgross@suse.com> Cc: Hannes Reinecke <hare@suse.de> Cc: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: Convert demo-mode only drivers to target_alloc_sessionChristoph Hellwig2016-03-101-37/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts existing loopback, usb-gadget, and xen-scsiback demo-mode only fabric drivers to use the new target_alloc_session API caller. This includes adding a new alloc_session callback for fabric driver internal nexus pointer assignments. (Fixes for early for-next nexus breakage - Dan Carpenter) Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Acked-by: Juergen Gross <jgross@suse.com> Tested-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Chris Boot <bootc@bootc.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* | xen/scsiback: avoid warnings when adding multiple LUNs to a domainJuergen Gross2016-02-081-29/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding more than one LUN to a frontend a warning for a failed assignment is issued in dom0 for each already existing LUN. Avoid this warning by checking for a LUN already existing when existence is allowed (scsiback_do_add_lun() called with try == 1). As the LUN existence check is needed now for a third time, factor it out into a function. This in turn leads to a more or less complete rewrite of scsiback_del_translation_entry() which will now return a proper error code in case of failure. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
* | xen/scsiback: correct frontend countingJuergen Gross2016-02-081-5/+5
|/ | | | | | | | | | | | When adding a new frontend to xen-scsiback don't decrement the number of active frontends in case of no error. Doing so results in a failure when trying to remove the xen-pvscsi nexus even if no domain is using it. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: David Vrabel <david.vrabel@citrix.com>
* Merge tag 'for-linus-4.4-rc5-tag' of ↵Linus Torvalds2015-12-181-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen bug fixes from David Vrabel: - XSA-155 security fixes to backend drivers. - XSA-157 security fixes to pciback. * tag 'for-linus-4.4-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen-pciback: fix up cleanup path when alloc fails xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set. xen/pciback: For XEN_PCI_OP_disable_msi[|x] only disable if device has MSI(X) enabled. xen/pciback: Do not install an IRQ handler for MSI interrupts. xen/pciback: Return error on XEN_PCI_OP_enable_msix when device has MSI or MSI-X enabled xen/pciback: Return error on XEN_PCI_OP_enable_msi when device has MSI or MSI-X enabled xen/pciback: Save xen_pci_op commands before processing it xen-scsiback: safely copy requests xen-blkback: read from indirect descriptors only once xen-blkback: only read request operation from shared ring once xen-netback: use RING_COPY_REQUEST() throughout xen-netback: don't use last request to determine minimum Tx credit xen: Add RING_COPY_REQUEST() xen/x86/pvh: Use HVM's flush_tlb_others op xen: Resume PMU from non-atomic context xen/events/fifo: Consume unprocessed events when a CPU dies
| * xen-scsiback: safely copy requestsDavid Vrabel2015-12-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The copy of the ring request was lacking a following barrier(), potentially allowing the compiler to optimize the copy away. Use RING_COPY_REQUEST() to ensure the request is copied to local memory. This is part of XSA155. CC: stable@vger.kernel.org Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
* | target: use per-attribute show and store methodsChristoph Hellwig2015-10-131-16/+16
|/ | | | | | | | | | | This also allows to remove the target-specific old configfs macros, and gets rid of the target_core_fabric_configfs.h header which only had one function declaration left that could be moved to a better place. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org> Acked-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* Merge branch 'for-next' of ↵Linus Torvalds2015-07-041-172/+19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "It's been a busy development cycle for target-core in a number of different areas. The fabric API usage for se_node_acl allocation is now within target-core code, dropping the external API callers for all fabric drivers tree-wide. There is a new conversion to RCU hlists for se_node_acl and se_portal_group LUN mappings, that turns fast-past LUN lookup into a completely lockless code-path. It also removes the original hard-coded limitation of 256 LUNs per fabric endpoint. The configfs attributes for backends can now be shared between core and driver code, allowing existing drivers to use common code while still allowing flexibility for new backend provided attributes. The highlights include: - Merge sbc_verify_dif_* into common code (sagi) - Remove iscsi-target support for obsolete IFMarker/OFMarker (Christophe Vu-Brugier) - Add bidi support in target/user backend (ilias + vangelis + agover) - Move se_node_acl allocation into target-core code (hch) - Add crc_t10dif_update common helper (akinobu + mkp) - Handle target-core odd SGL mapping for data transfer memory (akinobu) - Move transport ID handling into target-core (hch) - Move task tag into struct se_cmd + support 64-bit tags (bart) - Convert se_node_acl->device_list[] to RCU hlist (nab + hch + paulmck) - Convert se_portal_group->tpg_lun_list[] to RCU hlist (nab + hch + paulmck) - Simplify target backend driver registration (hch) - Consolidate + simplify target backend attribute implementations (hch + nab) - Subsume se_port + t10_alua_tg_pt_gp_member into se_lun (hch) - Drop lun_sep_lock for se_lun->lun_se_dev RCU usage (hch + nab) - Drop unnecessary core_tpg_register TFO parameter (nab) - Use 64-bit LUNs tree-wide (hannes) - Drop left-over TARGET_MAX_LUNS_PER_TRANSPORT limit (hannes)" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (76 commits) target: Bump core version to v5.0 target: remove target_core_configfs.h target: remove unused TARGET_CORE_CONFIG_ROOT define target: consolidate version defines target: implement WRITE_SAME with UNMAP bit using ->execute_unmap target: simplify UNMAP handling target: replace se_cmd->execute_rw with a protocol_data field target/user: Fix inconsistent kmap_atomic/kunmap_atomic target: Send UA when changing LUN inventory target: Send UA upon LUN RESET tmr completion target: Send UA on ALUA target port group change target: Convert se_lun->lun_deve_lock to normal spinlock target: use 'se_dev_entry' when allocating UAs target: Remove 'ua_nacl' pointer from se_ua structure target_core_alua: Correct UA handling when switching states xen-scsiback: Fix compile warning for 64-bit LUN target: Remove TARGET_MAX_LUNS_PER_TRANSPORT target: use 64-bit LUNs target: Drop duplicate + unused se_dev_check_wce target: Drop unnecessary core_tpg_register TFO parameter ...
| * xen-scsiback: Fix compile warning for 64-bit LUNNicholas Bellinger2015-06-161-1/+1
| | | | | | | | | | | | | | drivers/xen/xen-scsiback.c: In function ‘scsiback_add_translation_entry’: drivers/xen/xen-scsiback.c:911:3: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long unsigned int’ [-Wformat] Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: Remove TARGET_MAX_LUNS_PER_TRANSPORTHannes Reinecke2015-06-151-3/+4
| | | | | | | | | | | | | | | | LUN allocation is now fully dynamic, so there is no need to artificially restrain the number of exported LUNs. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: Drop unnecessary core_tpg_register TFO parameterNicholas Bellinger2015-06-151-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch drops unnecessary target_core_fabric_ops parameter usage for core_tpg_register() during fabric driver TFO->fabric_make_tpg() se_portal_group creation callback execution. Instead, use the existing se_wwn->wwn_tf->tf_ops pointer to ensure fabric driver is really using the same TFO provided at module_init time. Also go ahead and drop the forward TFO declarations tree-wide, and handling the special case for iscsi-target discovery TPG. Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: Convert se_portal_group->tpg_lun_list[] to RCU hlistNicholas Bellinger2015-06-011-12/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch converts the fixed size se_portal_group->tpg_lun_list[] to use modern RCU with hlist_head in order to support an arbitary number of se_lun ports per target endpoint. It includes dropping core_tpg_alloc_lun() from core_dev_add_lun(), and calling it directly from target_fabric_make_lun() to allocate a new se_lun. And add a new target_fabric_port_release() configfs item callback to invoke kfree_rcu() to release memory during se_lun->lun_group shutdown. Also now that se_node_acl->lun_entry_hlist is using RCU, convert existing tpg_lun_lock to struct mutex so core_tpg_add_node_to_devs() can perform RCU updater logic without releasing ->tpg_lun_mutex. Also, drop core_tpg_clear_object_luns() and it's single consumer in iscsi-target, which is duplicating TPG LUN shutdown logic and is current code results in a NOP. Finally, sbp-target and xen-scsiback fabric driver conversions are included, which are required due to the non-standard way they use ->tpg_lun_hlist. Reviewed-by: Hannes Reinecke <hare@suse.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Chris Boot <bootc@bootc.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: remove ->put_session methodChristoph Hellwig2015-05-301-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The only instance of ->put_session is in qla2xxx, and was added by commit aaf68b ("tcm_qla2xxx: Convert to TFO->put_session() usage") with the following description: This patch converts tcm_qla2xxx code to use an internal kref_put() for se_session->sess_kref in order to ensure that qla_hw_data->hardware_lock can be held while calling qlt_unreg_sess() for the final put. But these day we're already holding the hardware lock over qlt_unreg_sess in the ->close_session callback, so we're fine without this method. (Re-add missing tcm_qla2xxx_release_session + drop put_session usage - nab) Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: target_core_configfs.h is not needed in fabric driversChristoph Hellwig2015-05-301-1/+0
| | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: Move task tag into struct se_cmd + support 64-bit tagsBart Van Assche2015-05-301-9/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify target core and target drivers by storing the task tag a.k.a. command identifier inside struct se_cmd. For several transports (e.g. SRP) tags are 64 bits wide. Hence add support for 64-bit tags. (Fix core_tmr_abort_task conversion spec warnings - nab) (Fix up usb-gadget to use 16-bit tags - HCH + bart) Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Andy Grover <agrover@redhat.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: <qla2xxx-upstream@qlogic.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: move transport ID handling to the coreChristoph Hellwig2015-05-301-94/+0
| | | | | | | | | | | | | | | | | | Now that struct se_portal_group contains a protocol identifier field we can take all the code to format an parse protocol identifiers in CDBs into common code instead of leaving this to low-level drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: remove the get_fabric_proto_ident methodChristoph Hellwig2015-05-301-23/+0
| | | | | | | | | | | | | | | | Now that we store the protocol identifier in the tpg structure we don't need this method. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: change core_tpg_register prototypeChristoph Hellwig2015-05-301-2/+2
| | | | | | | | | | | | | | | | Remove the unneeded fabric_ptr argument, and change the type argument to pass in a SPC protocol identifier. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: move node ACL allocation to core codeChristoph Hellwig2015-05-301-15/+0
| | | | | | | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: refactor init/drop_nodeacl methodsChristoph Hellwig2015-05-301-6/+0
| | | | | | | | | | | | | | | | | | | | | | By always allocating and adding, respectively removing and freeing the se_node_acl structure in core code we can remove tons of repeated code in the init_nodeacl and drop_nodeacl routines. Additionally this now respects the get_default_queue_depth method in this code path as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
| * target: make the tpg_get_default_depth method optionalChristoph Hellwig2015-05-301-6/+0
| | | | | | | | | | | | | | | | All fabric drivers except for iSCSI always return 1, so implement that as default behavior. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* | target: Minimize SCSI header #include directivesBart Van Assche2015-06-021-4/+1
|/ | | | | | | | | | | | | | | | | | | | | | Only include SCSI initiator header files in target code that needs these header files, namely the SCSI pass-through code and the tcm_loop driver. Change SCSI_SENSE_BUFFERSIZE into TRANSPORT_SENSE_BUFFER in target code because the former is intended for initiator code and the latter for target code. With this patch the only initiator include directives in target code that remain are as follows: $ git grep -nHE 'include .scsi/(scsi.h|scsi_host.h|scsi_device.h|scsi_cmnd.h)' drivers/target drivers/infiniband/ulp/{isert,srpt} drivers/usb/gadget/legacy/tcm_*.[ch] drivers/{vhost,xen} include/{target,trace/events/target.h} drivers/target/loopback/tcm_loop.c:29:#include <scsi/scsi.h> drivers/target/loopback/tcm_loop.c:31:#include <scsi/scsi_host.h> drivers/target/loopback/tcm_loop.c:32:#include <scsi/scsi_device.h> drivers/target/loopback/tcm_loop.c:33:#include <scsi/scsi_cmnd.h> drivers/target/target_core_pscsi.c:39:#include <scsi/scsi_device.h> drivers/target/target_core_pscsi.c:40:#include <scsi/scsi_host.h> drivers/xen/xen-scsiback.c:52:#include <scsi/scsi_host.h> /* SG_ALL */ Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* Merge branch 'for-next' of ↵Linus Torvalds2015-04-241-61/+13
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull SCSI target updates from Nicholas Bellinger: "Lots of activity in target land the last months. The highlights include: - Convert fabric drivers tree-wide to target_register_template() (hch + bart) - iser-target hardening fixes + v1.0 improvements (sagi) - Convert iscsi_thread_set usage to kthread.h + kill iscsi_target_tq.c (sagi + nab) - Add support for T10-PI WRITE_STRIP + READ_INSERT operation (mkp + sagi + nab) - DIF fixes for CONFIG_DEBUG_SG=y + UNMAP file emulation (akinobu + sagi + mkp) - Extended TCMU ABI v2 for future BIDI + DIF support (andy + ilias) - Fix COMPARE_AND_WRITE handling for NO_ALLLOC drivers (hch + nab) Thanks to everyone who contributed this round with new features, bug-reports, fixes, cleanups and improvements. Looking forward, it's currently shaping up to be a busy v4.2 as well" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (69 commits) target: Put TCMU under a new config option target: Version 2 of TCMU ABI target: fix tcm_mod_builder.py target/file: Fix UNMAP with DIF protection support target/file: Fix SG table for prot_buf initialization target/file: Fix BUG() when CONFIG_DEBUG_SG=y and DIF protection enabled target: Make core_tmr_abort_task() skip TMFs target/sbc: Update sbc_dif_generate pr_debug output target/sbc: Make internal DIF emulation honor ->prot_checks target/sbc: Return INVALID_CDB_FIELD if DIF + sess_prot_type disabled target: Ensure sess_prot_type is saved across session restart target/rd: Don't pass incomplete scatterlist entries to sbc_dif_verify_* target: Remove the unused flag SCF_ACK_KREF target: Fix two sparse warnings target: Fix COMPARE_AND_WRITE with SG_TO_MEM_NOALLOC handling target: simplify the target template registration API target: simplify target_xcopy_init_pt_lun target: remove the unused SCF_CMD_XCOPY_PASSTHROUGH flag target/rd: reduce code duplication in rd_execute_rw() tcm_loop: fixup tpgt string to integer conversion ...
| * target: simplify the target template registration APIChristoph Hellwig2015-04-141-61/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of calling target_fabric_configfs_init() + target_fabric_configfs_register() / target_fabric_configfs_deregister() target_fabric_configfs_free() from every target driver, rewrite the API so that we have simple register/unregister functions that operate on a const operations vector. This patch also fixes a memory leak in several target drivers. Several target drivers namely called target_fabric_configfs_deregister() without calling target_fabric_configfs_free(). A large part of this patch is based on earlier changes from Bart Van Assche <bart.vanassche@sandisk.com>. (v2: Add a new TF_CIT_SETUP_DRV macro so that the core configfs code can declare attributes as either core only or for drivers) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* | Merge tag 'stable/for-linus-4.1-rc0-tag' of ↵Linus Torvalds2015-04-161-45/+51
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen features and fixes from David Vrabel: - use a single source list of hypercalls, generating other tables etc. at build time. - add a "Xen PV" APIC driver to support >255 VCPUs in PV guests. - significant performance improve to guest save/restore/migration. - scsiback/front save/restore support. - infrastructure for multi-page xenbus rings. - misc fixes. * tag 'stable/for-linus-4.1-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/pci: Try harder to get PXM information for Xen xenbus_client: Extend interface to support multi-page ring xen-pciback: also support disabling of bus-mastering and memory-write-invalidate xen: support suspend/resume in pvscsi frontend xen: scsiback: add LUN of restored domain xen-scsiback: define a pr_fmt macro with xen-pvscsi xen/mce: fix up xen_late_init_mcelog() error handling xen/privcmd: improve performance of MMAPBATCH_V2 xen: unify foreign GFN map/unmap for auto-xlated physmap guests x86/xen/apic: WARN with details. x86/xen: Provide a "Xen PV" APIC driver to support >255 VCPUs xen/pciback: Don't print scary messages when unsupported by hypervisor. xen: use generated hypercall symbols in arch/x86/xen/xen-head.S xen: use generated hypervisor symbols in arch/x86/xen/trace.c xen: synchronize include/xen/interface/xen.h with xen xen: build infrastructure for generating hypercall depending symbols xen: balloon: Use static attribute groups for sysfs entries xen: pcpu: Use static attribute groups for sysfs entry
| * | xenbus_client: Extend interface to support multi-page ringWei Liu2015-04-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Originally Xen PV drivers only use single-page ring to pass along information. This might limit the throughput between frontend and backend. The patch extends Xenbus driver to support multi-page ring, which in general should improve throughput if ring is the bottleneck. Changes to various frontend / backend to adapt to the new interface are also included. Affected Xen drivers: * blkfront/back * netfront/back * pcifront/back * scsifront/back * vtpmfront The interface is documented, as before, in xenbus_client.c. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Signed-off-by: Bob Liu <bob.liu@oracle.com> Cc: Konrad Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
| * | xen: scsiback: add LUN of restored domainJuergen Gross2015-03-161-5/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a xen domain is being restored the LUN state of a pvscsi device is "Connected" and not "Initialising" as in case of attaching a new pvscsi LUN. This must be taken into account when adding a new pvscsi device for a domain as otherwise the pvscsi LUN won't be connected to the SCSI target associated with it. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
| * | xen-scsiback: define a pr_fmt macro with xen-pvscsiTao Chen2015-03-161-39/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add the {xen-pvscsi: } prefix in pr_fmt and remove DPRINTK, then replace all DPRINTK with pr_debug. Also fixed up some comments just as eliminate redundant whitespace and format the code. These will make the code easier to read. Signed-off-by: Tao Chen <boby.chen@huawei.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds2015-03-211-5/+2
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI target fixes from Nicholas Bellinger: "Here are current target-pending fixes for v4.0-rc5 code that have made their way into the queue over the last weeks. The fixes this round include: - Fix long-standing iser-target logout bug related to early conn_logout_comp completion, resulting in iscsi_conn use-after-tree OOpsen. (Sagi + nab) - Fix long-standing tcm_fc bug in ft_invl_hw_context() failure handing for DDP hw offload. (DanC) - Fix incorrect use of unprotected __transport_register_session() in tcm_qla2xxx + other single local se_node_acl fabrics. (Bart) - Fix reference leak in target_submit_cmd() -> target_get_sess_cmd() for ack_kref=1 failure path. (Bart) - Fix pSCSI backend ->get_device_type() statistics OOPs with un-configured device. (Olaf + nab) - Fix virtual LUN=0 target_configure_device failure OOPs at modprobe time. (Claudio + nab) - Fix FUA write false positive failure regression in v4.0-rc1 code. (Christophe Vu-Brugier + HCH)" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target: do not reject FUA CDBs when write cache is enabled but emulate_write_cache is 0 target: Fix virtual LUN=0 target_configure_device failure OOPs target/pscsi: Fix NULL pointer dereference in get_device_type tcm_fc: missing curly braces in ft_invl_hw_context() target: Fix reference leak in target_get_sess_cmd() error path loop/usb/vhost-scsi/xen-scsiback: Fix use of __transport_register_session tcm_qla2xxx: Fix incorrect use of __transport_register_session iscsi-target: Avoid early conn_logout_comp for iser connections Revert "iscsi-target: Avoid IN_LOGOUT failure case for iser-target" target: Disallow changing of WRITE cache/FUA attrs after export
| * | loop/usb/vhost-scsi/xen-scsiback: Fix use of __transport_register_sessionBart Van Assche2015-03-191-5/+2
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes loopback, usb-gadget, vhost-scsi and xen-scsiback fabric code to invoke transport_register_session() instead of the unprotected flavour, to ensure se_tpg->session_lock is taken when adding new session list nodes to se_tpg->tpg_sess_list. Note that since these four fabric drivers already hold their own internal TPG mutexes when accessing se_tpg->tpg_sess_list, and consist of a single se_session created through configfs attribute access, no list corruption can currently occur. So for correctness sake, go ahead and use the se_tpg->session_lock protected version for these four fabric drivers. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
* / xen-scsiback: mark pvscsi frontend request consumed only after last readJuergen Gross2015-02-231-8/+6
|/ | | | | | | | | | | | | | | A request in the ring buffer mustn't be read after it has been marked as consumed. Otherwise it might already have been reused by the frontend without violating the ring protocol. To avoid inconsistencies in the backend only work on a private copy of the request. This will ensure a malicious guest not being able to bypass consistency checks of the backend by modifying an active request. Signed-off-by: Juergen Gross <jgross@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 06:52:39 +0000