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BranchCommit messageAuthorAge
archive/unc-master-3.0P-FP: fix BUG_ON releated to priority inheritanceBjoern Brandenburg13 years
archived-2013.1uncachedev: mmap memory that is not cached by CPUsGlenn Elliott12 years
archived-private-masterMerge branch 'wip-2.6.34' into old-private-masterAndrea Bastoni15 years
archived-semi-partMerge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...Andrea Bastoni15 years
demoFurther refinementsJonathan Herman14 years
ecrts-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
ecrts14-pgm-finalMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
gpusync-rtss12Final GPUSync implementation.Glenn Elliott12 years
gpusync/stagingRename IKGLP R2DGLP.Glenn Elliott12 years
linux-tipMerge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...Linus Torvalds15 years
litmus2008-patch-seriesadd i386 feather-trace implementationBjoern B. Brandenburg16 years
masterPSN-EDF: use inferred_sporadic_job_release_atBjoern Brandenburg9 years
pgmmake it compileGlenn Elliott12 years
prop/litmus-signalsInfrastructure for Litmus signals.Glenn Elliott13 years
prop/robust-tie-breakFixed bug in edf_higher_prio().Glenn Elliott13 years
stagingFix tracepoint compilation errorFelipe Cerqueira13 years
test9/23/2016Namhoon Kim9 years
tracing-develTest kernel tracing events capabilitiesAndrea Bastoni16 years
v2.6.34-with-arm-patchessmsc911x: Add spinlocks around registers accessCatalin Marinas15 years
v2015.1Add ARM syscall def for get_current_budgetBjoern Brandenburg10 years
wip-2011.2-bbbLitmus core: simplify np-section protocolBjoern B. Brandenburg14 years
wip-2011.2-bbb-traceRefactor sched_trace_log_message() -> debug_trace_log_message()Andrea Bastoni14 years
wip-2012.3-gpuSOBLIV draining support for C-EDF.Glenn Elliott12 years
wip-2012.3-gpu-preportpick up last C-RM fileGlenn Elliott12 years
wip-2012.3-gpu-rtss13Fix critical bug in GPU tracker.Glenn Elliott12 years
wip-2012.3-gpu-sobliv-budget-w-ksharkProper sobliv draining and many bug fixes.Glenn Elliott12 years
wip-aedzl-finalMake it easier to compile AEDZL interfaces in liblitmus.Glenn Elliott15 years
wip-aedzl-revisedAdd sched_trace data for Apative EDZLGlenn Elliott15 years
wip-arbit-deadlineFix compilation bug.Glenn Elliott13 years
wip-aux-tasksDescription of refined aux task inheritance.Glenn Elliott13 years
wip-bbbGSN-EDF & Core: improve debug TRACE'ing for NP sectionsBjoern B. Brandenburg14 years
wip-bbb-prio-donuse correct timestampBjoern B. Brandenburg14 years
wip-better-breakImplement hash-based EDF tie-breaking.Glenn Elliott13 years
wip-binary-heapMake C-EDF work with simplified binheap_deleteGlenn Elliott13 years
wip-budgetAdded support for choices in budget policy enforcement.Glenn Elliott15 years
wip-colorSummarize schedulability with final recordJonathan Herman13 years
wip-color-jlhsched_color: Fixed two bugs causing crashing on experiment restart and a rare...Jonathan Herman13 years
wip-d10-hz1000Enable HZ=1000 on District 10Bjoern B. Brandenburg15 years
wip-default-clusteringFeature: Make default C-EDF clustering compile-time configurable.Glenn Elliott15 years
wip-dissipation-jericksoUpdate from 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-dissipation2-jericksoUpdate 2.6.36 to 2.6.36.4Jeremy Erickson11 years
wip-ecrts14-pgmMerge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...Glenn Elliott12 years
wip-edf-hsblast tested versionJonathan Herman14 years
wip-edf-osLookup table EDF-osJeremy Erickson12 years
wip-edf-tie-breakMerge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...Glenn Elliott13 years
wip-edzl-critiqueUse hr_timer's active checks instead of having own flag.Glenn Elliott15 years
wip-edzl-finalImplementation of the EDZL scheduler.Glenn Elliott15 years
wip-edzl-revisedClean up comments.Glenn Elliott15 years
wip-eventsAdded support for tracing arbitrary actions.Jonathan Herman15 years
wip-extra-debugDBG: add additional tracingBjoern B. Brandenburg15 years
wip-fix-switch-jericksoAttempt to fix race condition with plugin switchingJeremy Erickson15 years
wip-fix3sched: show length of runqueue clock deactivation in /proc/sched_debugBjoern B. Brandenburg15 years
wip-fmlp-dequeueImprove FMLP queue management.Glenn Elliott14 years
wip-ft-irq-flagFeather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-gpu-cleanupEnable sched_trace log injection from userspaceGlenn Elliott13 years
wip-gpu-interruptsRemove option for threading of all softirqs.Glenn Elliott14 years
wip-gpu-rtas12Generalized GPU cost predictors + EWMA. (untested)Glenn Elliott13 years
wip-gpu-rtss12Final GPUSync implementation.Glenn Elliott13 years
wip-gpu-rtss12-srpexperimental changes to support GPUs under SRPGlenn Elliott13 years
wip-gpusync-mergeCleanup priority tracking for budget enforcement.Glenn Elliott11 years
wip-ikglpMove RSM and IKGLP imp. to own .c filesGlenn Elliott13 years
wip-k-fmlpMerge branch 'mpi-master' into wip-k-fmlpGlenn Elliott14 years
wip-kernel-coloringAdded recolor syscallNamhoon Kim7 years
wip-kernthreadsKludge work-queue processing into klitirqd.Glenn Elliott15 years
wip-klmirqd-to-auxAllow klmirqd threads to be given names.Glenn Elliott13 years
wip-ksharkMerge branch 'mpi-staging' into wip-ksharkJonathan Herman13 years
wip-litmus-3.2Merge commit 'v3.2' into litmus-stagingAndrea Bastoni13 years
wip-litmus2011.2Cleanup: Coding conformance for affinity stuff.Glenn Elliott14 years
wip-litmus3.0-2011.2Feather-Trace: keep track of interrupt-related interference.Bjoern B. Brandenburg14 years
wip-master-2.6.33-rtAvoid deadlock when switching task policy to BACKGROUND (ugly)Andrea Bastoni15 years
wip-mcRemoved ARM-specific hacks which disabled less common mixed-criticality featu...Jonathan Herman12 years
wip-mc-bipasaMC-EDF addedbipasa chattopadhyay13 years
wip-mc-jericksoSplit C/D queuesJeremy Erickson15 years
wip-mc2-cache-slackManually patched mc^2 related codeMing Yang10 years
wip-mcrit-maccosmeticMac Mollison15 years
wip-merge-3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-merge-v3.0Prevent Linux to send IPI and queue tasks on remote CPUs.Andrea Bastoni14 years
wip-migration-affinityNULL affinity dereference in C-EDF.Glenn Elliott14 years
wip-mmap-uncacheshare branch with othersGlenn Elliott13 years
wip-modechangeRTSS 2017 submissionNamhoon Kim8 years
wip-nested-lockingAppears to be working.Bryan Ward12 years
wip-omlp-gedfFirst implementation of G-OMLP.Glenn Elliott15 years
wip-paiSome cleanup of PAIGlenn Elliott14 years
wip-percore-lib9/21/2016Namhoon Kim9 years
wip-performanceCONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.Glenn Elliott14 years
wip-pgmAdd PGM support to C-FLGlenn Elliott12 years
wip-pgm-splitFirst draft of C-FL-splitNamhoon Kim12 years
wip-pm-ovdAdd preemption-and-migration overhead tracing supportAndrea Bastoni15 years
wip-prio-inhP-EDF updated to use the generic pi framework.Glenn Elliott15 years
wip-prioq-dglBUG FIX: Support DGLs with PRIOQ_MUTEXGlenn Elliott13 years
wip-refactored-gedfGeneralizd architecture for GEDF-style scheduelrs to reduce code redundancy.Glenn Elliott15 years
wip-release-master-fixbugfix: release master CPU must signal task was pickedBjoern B. Brandenburg14 years
wip-robust-tie-breakEDF priority tie-breaks.Glenn Elliott13 years
wip-rt-ksharkMove task time accounting into the complete_job method.Jonathan Herman13 years
wip-rtas12-pgmScheduling of PGM jobs.Glenn Elliott13 years
wip-semi-partFix compile error with newer GCCJeremy Erickson12 years
wip-semi-part-edfos-jericksoUse initial CPU set by clientJeremy Erickson12 years
wip-shared-libTODO: Fix condition checks in replicate_page_move_mapping()Namhoon Kim9 years
wip-shared-lib2RTAS 2017 Submission ver.Namhoon Kim9 years
wip-shared-memInitial commit for shared libraryNamhoon Kim9 years
wip-splitting-jericksoFix release behaviorJeremy Erickson13 years
wip-splitting-omlp-jericksoBjoern's Dissertation Code with Priority DonationJeremy Erickson13 years
wip-stage-binheapAn efficient binary heap implementation.Glenn Elliott13 years
wip-sun-portDynamic memory allocation and clean exit for FeatherTraceChristopher Kenna15 years
wip-timer-tracebugfix: C-EDF, clear scheduled field of the correct CPU upon task_exitAndrea Bastoni15 years
wip-tracepointsAdd kernel-style events for sched_trace_XXX() functionsAndrea Bastoni14 years
 
TagDownloadAuthorAge
2015.1commit 8e51b37822...Bjoern Brandenburg10 years
2013.1commit bcaacec1ca...Glenn Elliott12 years
2012.3commit c158b5fbe4...Jonathan Herman13 years
2012.2commit b53c479a0f...Glenn Elliott13 years
2012.1commit 83b11ea1c6...Bjoern B. Brandenburg14 years
rtas12-mc-beta-expcommit 8e236ee20f...Christopher Kenna14 years
2011.1commit d11808b5c6...Christopher Kenna15 years
v2.6.37-rc4commit e8a7e48bb2...Linus Torvalds15 years
v2.6.37-rc3commit 3561d43fd2...Linus Torvalds15 years
v2.6.37-rc2commit e53beacd23...Linus Torvalds15 years
v2.6.37-rc1commit c8ddb2713c...Linus Torvalds15 years
v2.6.36commit f6f94e2ab1...Linus Torvalds15 years
2010.2commit 5c5456402d...Bjoern B. Brandenburg15 years
v2.6.36-rc8commit cd07202cc8...Linus Torvalds15 years
v2.6.36-rc7commit cb655d0f3d...Linus Torvalds15 years
v2.6.36-rc6commit 899611ee7d...Linus Torvalds15 years
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2010.1commit 7c1ff4c544...Andrea Bastoni15 years
v2.6.34commit e40152ee1e...Linus Torvalds15 years
v2.6.33.4commit 4640b4e7d9...Greg Kroah-Hartman15 years
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v2.6.15-rc3commit 624f54be20...Linus Torvalds20 years
v2.6.15-rc2commit 3bedff1d73...Linus Torvalds20 years
v2.6.15-rc1commit cd52d1ee9a...Linus Torvalds20 years
v2.6.14commit 741b2252a5...Linus Torvalds20 years
v2.6.14-rc5commit 93918e9afc...Linus Torvalds20 years
v2.6.14-rc4commit 907a426179...Linus Torvalds20 years
v2.6.14-rc3commit 1c9426e8a5...Linus Torvalds20 years
v2.6.14-rc2commit 676d55ae30...Linus Torvalds20 years
v2.6.14-rc1commit 2f4ba45a75...Linus Torvalds20 years
v2.6.13commit 02b3e4e2d7...Linus Torvalds20 years
v2.6.13-rc7commit 0572e3da3f...Linus Torvalds20 years
v2.6.13-rc6commit 6fc32179de...Linus Torvalds20 years
v2.6.13-rc5commit 9a351e30d7...Linus Torvalds20 years
v2.6.13-rc4commit 6395352334...Linus Torvalds20 years
v2.6.11tree c39ae07f39...
v2.6.11-treetree c39ae07f39...
v2.6.12commit 9ee1c939d1...
v2.6.12-rc2commit 1da177e4c3...
v2.6.12-rc3commit a2755a80f4...
v2.6.12-rc4commit 88d7bd8cb9...
v2.6.12-rc5commit 2a24ab628a...
v2.6.12-rc6commit 7cef5677ef...
v2.6.13-rc1commit 4c91aedb75...
v2.6.13-rc2commit a18bcb7450...
v2.6.13-rc3commit c32511e271...
ss="hl opt">->iov[0].iov_base, sizeof(v_req)); if (unlikely(ret)) { vq_err(vq, "Faulted on virtio_scsi_cmd_req\n"); break; } exp_data_len = 0; for (i = 0; i < data_num; i++) exp_data_len += vq->iov[data_first + i].iov_len; tv_cmd = vhost_scsi_allocate_cmd(tv_tpg, &v_req, exp_data_len, data_direction); if (IS_ERR(tv_cmd)) { vq_err(vq, "vhost_scsi_allocate_cmd failed %ld\n", PTR_ERR(tv_cmd)); break; } pr_debug("Allocated tv_cmd: %p exp_data_len: %d, data_direction" ": %d\n", tv_cmd, exp_data_len, data_direction); tv_cmd->tvc_vhost = vs; if (unlikely(vq->iov[out].iov_len != sizeof(struct virtio_scsi_cmd_resp))) { vq_err(vq, "Expecting virtio_scsi_cmd_resp, got %zu" " bytes, out: %d, in: %d\n", vq->iov[out].iov_len, out, in); break; } tv_cmd->tvc_resp = vq->iov[out].iov_base; /* * Copy in the recieved CDB descriptor into tv_cmd->tvc_cdb * that will be used by tcm_vhost_new_cmd_map() and down into * target_setup_cmd_from_cdb() */ memcpy(tv_cmd->tvc_cdb, v_req.cdb, TCM_VHOST_MAX_CDB_SIZE); /* * Check that the recieved CDB size does not exceeded our * hardcoded max for tcm_vhost */ /* TODO what if cdb was too small for varlen cdb header? */ if (unlikely(scsi_command_size(tv_cmd->tvc_cdb) > TCM_VHOST_MAX_CDB_SIZE)) { vq_err(vq, "Received SCSI CDB with command_size: %d that" " exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n", scsi_command_size(tv_cmd->tvc_cdb), TCM_VHOST_MAX_CDB_SIZE); break; /* TODO */ } tv_cmd->tvc_lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF; pr_debug("vhost_scsi got command opcode: %#02x, lun: %d\n", tv_cmd->tvc_cdb[0], tv_cmd->tvc_lun); if (data_direction != DMA_NONE) { ret = vhost_scsi_map_iov_to_sgl(tv_cmd, &vq->iov[data_first], data_num, data_direction == DMA_TO_DEVICE); if (unlikely(ret)) { vq_err(vq, "Failed to map iov to sgl\n"); break; /* TODO */ } } /* * Save the descriptor from vhost_get_vq_desc() to be used to * complete the virtio-scsi request in TCM callback context via * tcm_vhost_queue_data_in() and tcm_vhost_queue_status() */ tv_cmd->tvc_vq_desc = head; /* * Dispatch tv_cmd descriptor for cmwq execution in process * context provided by tcm_vhost_workqueue. This also ensures * tv_cmd is executed on the same kworker CPU as this vhost * thread to gain positive L2 cache locality effects.. */ INIT_WORK(&tv_cmd->work, tcm_vhost_submission_work); queue_work(tcm_vhost_workqueue, &tv_cmd->work); } mutex_unlock(&vq->mutex); } static void vhost_scsi_ctl_handle_kick(struct vhost_work *work) { pr_debug("%s: The handling func for control queue.\n", __func__); } static void vhost_scsi_evt_handle_kick(struct vhost_work *work) { pr_debug("%s: The handling func for event queue.\n", __func__); } static void vhost_scsi_handle_kick(struct vhost_work *work) { struct vhost_virtqueue *vq = container_of(work, struct vhost_virtqueue, poll.work); struct vhost_scsi *vs = container_of(vq->dev, struct vhost_scsi, dev); vhost_scsi_handle_vq(vs); } /* * Called from vhost_scsi_ioctl() context to walk the list of available * tcm_vhost_tpg with an active struct tcm_vhost_nexus */ static int vhost_scsi_set_endpoint( struct vhost_scsi *vs, struct vhost_scsi_target *t) { struct tcm_vhost_tport *tv_tport; struct tcm_vhost_tpg *tv_tpg; int index; mutex_lock(&vs->dev.mutex); /* Verify that ring has been setup correctly. */ for (index = 0; index < vs->dev.nvqs; ++index) { /* Verify that ring has been setup correctly. */ if (!vhost_vq_access_ok(&vs->vqs[index])) { mutex_unlock(&vs->dev.mutex); return -EFAULT; } } mutex_unlock(&vs->dev.mutex); mutex_lock(&tcm_vhost_mutex); list_for_each_entry(tv_tpg, &tcm_vhost_list, tv_tpg_list) { mutex_lock(&tv_tpg->tv_tpg_mutex); if (!tv_tpg->tpg_nexus) { mutex_unlock(&tv_tpg->tv_tpg_mutex); continue; } if (tv_tpg->tv_tpg_vhost_count != 0) { mutex_unlock(&tv_tpg->tv_tpg_mutex); continue; } tv_tport = tv_tpg->tport; if (!strcmp(tv_tport->tport_name, t->vhost_wwpn) && (tv_tpg->tport_tpgt == t->vhost_tpgt)) { tv_tpg->tv_tpg_vhost_count++; mutex_unlock(&tv_tpg->tv_tpg_mutex); mutex_unlock(&tcm_vhost_mutex); mutex_lock(&vs->dev.mutex); if (vs->vs_tpg) { mutex_unlock(&vs->dev.mutex); mutex_lock(&tv_tpg->tv_tpg_mutex); tv_tpg->tv_tpg_vhost_count--; mutex_unlock(&tv_tpg->tv_tpg_mutex); return -EEXIST; } vs->vs_tpg = tv_tpg; smp_mb__after_atomic_inc(); mutex_unlock(&vs->dev.mutex); return 0; } mutex_unlock(&tv_tpg->tv_tpg_mutex); } mutex_unlock(&tcm_vhost_mutex); return -EINVAL; } static int vhost_scsi_clear_endpoint( struct vhost_scsi *vs, struct vhost_scsi_target *t) { struct tcm_vhost_tport *tv_tport; struct tcm_vhost_tpg *tv_tpg; int index, ret; mutex_lock(&vs->dev.mutex); /* Verify that ring has been setup correctly. */ for (index = 0; index < vs->dev.nvqs; ++index) { if (!vhost_vq_access_ok(&vs->vqs[index])) { ret = -EFAULT; goto err; } } if (!vs->vs_tpg) { ret = -ENODEV; goto err; } tv_tpg = vs->vs_tpg; tv_tport = tv_tpg->tport; if (strcmp(tv_tport->tport_name, t->vhost_wwpn) || (tv_tpg->tport_tpgt != t->vhost_tpgt)) { pr_warn("tv_tport->tport_name: %s, tv_tpg->tport_tpgt: %hu" " does not match t->vhost_wwpn: %s, t->vhost_tpgt: %hu\n", tv_tport->tport_name, tv_tpg->tport_tpgt, t->vhost_wwpn, t->vhost_tpgt); ret = -EINVAL; goto err; } tv_tpg->tv_tpg_vhost_count--; vs->vs_tpg = NULL; mutex_unlock(&vs->dev.mutex); return 0; err: mutex_unlock(&vs->dev.mutex); return ret; } static int vhost_scsi_open(struct inode *inode, struct file *f) { struct vhost_scsi *s; int r; s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) return -ENOMEM; vhost_work_init(&s->vs_completion_work, vhost_scsi_complete_cmd_work); INIT_LIST_HEAD(&s->vs_completion_list); spin_lock_init(&s->vs_completion_lock); s->vqs[VHOST_SCSI_VQ_CTL].handle_kick = vhost_scsi_ctl_handle_kick; s->vqs[VHOST_SCSI_VQ_EVT].handle_kick = vhost_scsi_evt_handle_kick; s->vqs[VHOST_SCSI_VQ_IO].handle_kick = vhost_scsi_handle_kick; r = vhost_dev_init(&s->dev, s->vqs, 3); if (r < 0) { kfree(s); return r; } f->private_data = s; return 0; } static int vhost_scsi_release(struct inode *inode, struct file *f) { struct vhost_scsi *s = f->private_data; if (s->vs_tpg && s->vs_tpg->tport) { struct vhost_scsi_target backend; memcpy(backend.vhost_wwpn, s->vs_tpg->tport->tport_name, sizeof(backend.vhost_wwpn)); backend.vhost_tpgt = s->vs_tpg->tport_tpgt; vhost_scsi_clear_endpoint(s, &backend); } vhost_dev_stop(&s->dev); vhost_dev_cleanup(&s->dev, false); kfree(s); return 0; } static void vhost_scsi_flush_vq(struct vhost_scsi *vs, int index) { vhost_poll_flush(&vs->dev.vqs[index].poll); } static void vhost_scsi_flush(struct vhost_scsi *vs) { vhost_scsi_flush_vq(vs, VHOST_SCSI_VQ_CTL); vhost_scsi_flush_vq(vs, VHOST_SCSI_VQ_EVT); vhost_scsi_flush_vq(vs, VHOST_SCSI_VQ_IO); } static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features) { if (features & ~VHOST_FEATURES) return -EOPNOTSUPP; mutex_lock(&vs->dev.mutex); if ((features & (1 << VHOST_F_LOG_ALL)) && !vhost_log_access_ok(&vs->dev)) { mutex_unlock(&vs->dev.mutex); return -EFAULT; } vs->dev.acked_features = features; smp_wmb(); vhost_scsi_flush(vs); mutex_unlock(&vs->dev.mutex); return 0; } static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl, unsigned long arg) { struct vhost_scsi *vs = f->private_data; struct vhost_scsi_target backend; void __user *argp = (void __user *)arg; u64 __user *featurep = argp; u64 features; int r, abi_version = VHOST_SCSI_ABI_VERSION; switch (ioctl) { case VHOST_SCSI_SET_ENDPOINT: if (copy_from_user(&backend, argp, sizeof backend)) return -EFAULT; if (backend.reserved != 0) return -EOPNOTSUPP; return vhost_scsi_set_endpoint(vs, &backend); case VHOST_SCSI_CLEAR_ENDPOINT: if (copy_from_user(&backend, argp, sizeof backend)) return -EFAULT; if (backend.reserved != 0) return -EOPNOTSUPP; return vhost_scsi_clear_endpoint(vs, &backend); case VHOST_SCSI_GET_ABI_VERSION: if (copy_to_user(argp, &abi_version, sizeof abi_version)) return -EFAULT; return 0; case VHOST_GET_FEATURES: features = VHOST_FEATURES; if (copy_to_user(featurep, &features, sizeof features)) return -EFAULT; return 0; case VHOST_SET_FEATURES: if (copy_from_user(&features, featurep, sizeof features)) return -EFAULT; return vhost_scsi_set_features(vs, features); default: mutex_lock(&vs->dev.mutex); r = vhost_dev_ioctl(&vs->dev, ioctl, argp); /* TODO: flush backend after dev ioctl. */ if (r == -ENOIOCTLCMD) r = vhost_vring_ioctl(&vs->dev, ioctl, argp); mutex_unlock(&vs->dev.mutex); return r; } } #ifdef CONFIG_COMPAT static long vhost_scsi_compat_ioctl(struct file *f, unsigned int ioctl, unsigned long arg) { return vhost_scsi_ioctl(f, ioctl, (unsigned long)compat_ptr(arg)); } #endif static const struct file_operations vhost_scsi_fops = { .owner = THIS_MODULE, .release = vhost_scsi_release, .unlocked_ioctl = vhost_scsi_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = vhost_scsi_compat_ioctl, #endif .open = vhost_scsi_open, .llseek = noop_llseek, }; static struct miscdevice vhost_scsi_misc = { MISC_DYNAMIC_MINOR, "vhost-scsi", &vhost_scsi_fops, }; static int __init vhost_scsi_register(void) { return misc_register(&vhost_scsi_misc); } static int vhost_scsi_deregister(void) { return misc_deregister(&vhost_scsi_misc); } static char *tcm_vhost_dump_proto_id(struct tcm_vhost_tport *tport) { switch (tport->tport_proto_id) { case SCSI_PROTOCOL_SAS: return "SAS"; case SCSI_PROTOCOL_FCP: return "FCP"; case SCSI_PROTOCOL_ISCSI: return "iSCSI"; default: break; } return "Unknown"; } static int tcm_vhost_port_link(struct se_portal_group *se_tpg, struct se_lun *lun) { struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg, struct tcm_vhost_tpg, se_tpg); mutex_lock(&tv_tpg->tv_tpg_mutex); tv_tpg->tv_tpg_port_count++; mutex_unlock(&tv_tpg->tv_tpg_mutex); return 0; } static void tcm_vhost_port_unlink(struct se_portal_group *se_tpg, struct se_lun *se_lun) { struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg, struct tcm_vhost_tpg, se_tpg); mutex_lock(&tv_tpg->tv_tpg_mutex); tv_tpg->tv_tpg_port_count--; mutex_unlock(&tv_tpg->tv_tpg_mutex); } static struct se_node_acl *tcm_vhost_make_nodeacl( struct se_portal_group *se_tpg, struct config_group *group, const char *name) { struct se_node_acl *se_nacl, *se_nacl_new; struct tcm_vhost_nacl *nacl; u64 wwpn = 0; u32 nexus_depth; /* tcm_vhost_parse_wwn(name, &wwpn, 1) < 0) return ERR_PTR(-EINVAL); */ se_nacl_new = tcm_vhost_alloc_fabric_acl(se_tpg); if (!se_nacl_new) return ERR_PTR(-ENOMEM); nexus_depth = 1; /* * se_nacl_new may be released by core_tpg_add_initiator_node_acl() * when converting a NodeACL from demo mode -> explict */ se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, name, nexus_depth); if (IS_ERR(se_nacl)) { tcm_vhost_release_fabric_acl(se_tpg, se_nacl_new); return se_nacl; } /* * Locate our struct tcm_vhost_nacl and set the FC Nport WWPN */ nacl = container_of(se_nacl, struct tcm_vhost_nacl, se_node_acl); nacl->iport_wwpn = wwpn; return se_nacl; } static void tcm_vhost_drop_nodeacl(struct se_node_acl *se_acl) { struct tcm_vhost_nacl *nacl = container_of(se_acl, struct tcm_vhost_nacl, se_node_acl); core_tpg_del_initiator_node_acl(se_acl->se_tpg, se_acl, 1); kfree(nacl); } static int tcm_vhost_make_nexus(struct tcm_vhost_tpg *tv_tpg, const char *name) { struct se_portal_group *se_tpg; struct tcm_vhost_nexus *tv_nexus; mutex_lock(&tv_tpg->tv_tpg_mutex); if (tv_tpg->tpg_nexus) { mutex_unlock(&tv_tpg->tv_tpg_mutex); pr_debug("tv_tpg->tpg_nexus already exists\n"); return -EEXIST; } se_tpg = &tv_tpg->se_tpg; tv_nexus = kzalloc(sizeof(struct tcm_vhost_nexus), GFP_KERNEL); if (!tv_nexus) { mutex_unlock(&tv_tpg->tv_tpg_mutex); pr_err("Unable to allocate struct tcm_vhost_nexus\n"); return -ENOMEM; } /* * Initialize the struct se_session pointer */ tv_nexus->tvn_se_sess = transport_init_session(); if (IS_ERR(tv_nexus->tvn_se_sess)) { mutex_unlock(&tv_tpg->tv_tpg_mutex); kfree(tv_nexus); return -ENOMEM; } /* * Since we are running in 'demo mode' this call with generate a * struct se_node_acl for the tcm_vhost struct se_portal_group with * the SCSI Initiator port name of the passed configfs group 'name'. */ tv_nexus->tvn_se_sess->se_node_acl = core_tpg_check_initiator_node_acl( se_tpg, (unsigned char *)name); if (!tv_nexus->tvn_se_sess->se_node_acl) { mutex_unlock(&tv_tpg->tv_tpg_mutex); pr_debug("core_tpg_check_initiator_node_acl() failed" " for %s\n", name); transport_free_session(tv_nexus->tvn_se_sess); kfree(tv_nexus); return -ENOMEM; } /* * Now register the TCM vhost virtual I_T Nexus as active with the * call to __transport_register_session() */ __transport_register_session(se_tpg, tv_nexus->tvn_se_sess->se_node_acl, tv_nexus->tvn_se_sess, tv_nexus); tv_tpg->tpg_nexus = tv_nexus; mutex_unlock(&tv_tpg->tv_tpg_mutex); return 0; } static int tcm_vhost_drop_nexus(struct tcm_vhost_tpg *tpg) { struct se_session *se_sess; struct tcm_vhost_nexus *tv_nexus; mutex_lock(&tpg->tv_tpg_mutex); tv_nexus = tpg->tpg_nexus; if (!tv_nexus) { mutex_unlock(&tpg->tv_tpg_mutex); return -ENODEV; } se_sess = tv_nexus->tvn_se_sess; if (!se_sess) { mutex_unlock(&tpg->tv_tpg_mutex); return -ENODEV; } if (tpg->tv_tpg_port_count != 0) { mutex_unlock(&tpg->tv_tpg_mutex); pr_err("Unable to remove TCM_vhost I_T Nexus with" " active TPG port count: %d\n", tpg->tv_tpg_port_count); return -EBUSY; } if (tpg->tv_tpg_vhost_count != 0) { mutex_unlock(&tpg->tv_tpg_mutex); pr_err("Unable to remove TCM_vhost I_T Nexus with" " active TPG vhost count: %d\n", tpg->tv_tpg_vhost_count); return -EBUSY; } pr_debug("TCM_vhost_ConfigFS: Removing I_T Nexus to emulated" " %s Initiator Port: %s\n", tcm_vhost_dump_proto_id(tpg->tport), tv_nexus->tvn_se_sess->se_node_acl->initiatorname); /* * Release the SCSI I_T Nexus to the emulated vhost Target Port */ transport_deregister_session(tv_nexus->tvn_se_sess); tpg->tpg_nexus = NULL; mutex_unlock(&tpg->tv_tpg_mutex); kfree(tv_nexus); return 0; } static ssize_t tcm_vhost_tpg_show_nexus(struct se_portal_group *se_tpg, char *page) { struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg, struct tcm_vhost_tpg, se_tpg); struct tcm_vhost_nexus *tv_nexus; ssize_t ret; mutex_lock(&tv_tpg->tv_tpg_mutex); tv_nexus = tv_tpg->tpg_nexus; if (!tv_nexus) { mutex_unlock(&tv_tpg->tv_tpg_mutex); return -ENODEV; } ret = snprintf(page, PAGE_SIZE, "%s\n", tv_nexus->tvn_se_sess->se_node_acl->initiatorname); mutex_unlock(&tv_tpg->tv_tpg_mutex); return ret; } static ssize_t tcm_vhost_tpg_store_nexus(struct se_portal_group *se_tpg, const char *page, size_t count) { struct tcm_vhost_tpg *tv_tpg = container_of(se_tpg, struct tcm_vhost_tpg, se_tpg); struct tcm_vhost_tport *tport_wwn = tv_tpg->tport; unsigned char i_port[TCM_VHOST_NAMELEN], *ptr, *port_ptr; int ret; /* * Shutdown the active I_T nexus if 'NULL' is passed.. */ if (!strncmp(page, "NULL", 4)) { ret = tcm_vhost_drop_nexus(tv_tpg); return (!ret) ? count : ret; } /* * Otherwise make sure the passed virtual Initiator port WWN matches * the fabric protocol_id set in tcm_vhost_make_tport(), and call * tcm_vhost_make_nexus(). */ if (strlen(page) >= TCM_VHOST_NAMELEN) { pr_err("Emulated NAA Sas Address: %s, exceeds" " max: %d\n", page, TCM_VHOST_NAMELEN); return -EINVAL; } snprintf(&i_port[0], TCM_VHOST_NAMELEN, "%s", page); ptr = strstr(i_port, "naa."); if (ptr) { if (tport_wwn->tport_proto_id != SCSI_PROTOCOL_SAS) { pr_err("Passed SAS Initiator Port %s does not" " match target port protoid: %s\n", i_port, tcm_vhost_dump_proto_id(tport_wwn)); return -EINVAL; } port_ptr = &i_port[0]; goto check_newline; } ptr = strstr(i_port, "fc."); if (ptr) { if (tport_wwn->tport_proto_id != SCSI_PROTOCOL_FCP) { pr_err("Passed FCP Initiator Port %s does not" " match target port protoid: %s\n", i_port, tcm_vhost_dump_proto_id(tport_wwn)); return -EINVAL; } port_ptr = &i_port[3]; /* Skip over "fc." */ goto check_newline; } ptr = strstr(i_port, "iqn."); if (ptr) { if (tport_wwn->tport_proto_id != SCSI_PROTOCOL_ISCSI) { pr_err("Passed iSCSI Initiator Port %s does not" " match target port protoid: %s\n", i_port, tcm_vhost_dump_proto_id(tport_wwn)); return -EINVAL; } port_ptr = &i_port[0]; goto check_newline; } pr_err("Unable to locate prefix for emulated Initiator Port:" " %s\n", i_port); return -EINVAL; /* * Clear any trailing newline for the NAA WWN */ check_newline: if (i_port[strlen(i_port)-1] == '\n') i_port[strlen(i_port)-1] = '\0'; ret = tcm_vhost_make_nexus(tv_tpg, port_ptr); if (ret < 0) return ret; return count; } TF_TPG_BASE_ATTR(tcm_vhost, nexus, S_IRUGO | S_IWUSR); static struct configfs_attribute *tcm_vhost_tpg_attrs[] = { &tcm_vhost_tpg_nexus.attr, NULL, }; static struct se_portal_group *tcm_vhost_make_tpg(struct se_wwn *wwn, struct config_group *group, const char *name) { struct tcm_vhost_tport *tport = container_of(wwn,