// SPDX-License-Identifier: GPL-2.0-or-later/******************************************************************************* * Filename: target_core_stat.c * * Modern ConfigFS group context specific statistics based on original * target_core_mib.c code * * (c) Copyright 2006-2013 Datera, Inc. * * Nicholas A. Bellinger <nab@linux-iscsi.org> * ******************************************************************************/ #include <linux/kernel.h>#include <linux/module.h>#include <linux/delay.h>#include <linux/timer.h>#include <linux/string.h>#include <linux/utsname.h>#include <linux/proc_fs.h>#include <linux/seq_file.h>#include <linux/configfs.h> #include <target/target_core_base.h>#include <target/target_core_backend.h>#include <target/target_core_fabric.h> #include "target_core_internal.h" #ifndef INITIAL_JIFFIES#define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))#endif #define SCSI_LU_INDEX 1#define LU_COUNT 1 /* * SCSI Device Table */ static struct se_device *to_stat_dev(struct config_item *item){ struct se_dev_stat_grps *sgrps = container_of(to_config_group(item), struct se_dev_stat_grps, scsi_dev_group); return container_of(sgrps, struct se_device, dev_stat_grps);} static ssize_t target_stat_inst_show(struct config_item *item, char *page){ struct se_hba *hba = to_stat_dev(item)->se_hba; return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);} static ssize_t target_stat_indx_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%u\n", to_stat_dev(item)->dev_index);} static ssize_t target_stat_role_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "Target\n");} static ssize_t target_stat_ports_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%u\n", to_stat_dev(item)->export_count);} CONFIGFS_ATTR_RO(target_stat_, inst);CONFIGFS_ATTR_RO(target_stat_, indx);CONFIGFS_ATTR_RO(target_stat_, role);CONFIGFS_ATTR_RO(target_stat_, ports); static struct configfs_attribute *target_stat_scsi_dev_attrs[] = { &target_stat_attr_inst, &target_stat_attr_indx, &target_stat_attr_role, &target_stat_attr_ports, NULL,}; static const struct config_item_type target_stat_scsi_dev_cit = { .ct_attrs = target_stat_scsi_dev_attrs, .ct_owner = THIS_MODULE,}; /* * SCSI Target Device Table */static struct se_device *to_stat_tgt_dev(struct config_item *item){ struct se_dev_stat_grps *sgrps = container_of(to_config_group(item), struct se_dev_stat_grps, scsi_tgt_dev_group); return container_of(sgrps, struct se_device, dev_stat_grps);} static ssize_t target_stat_tgt_inst_show(struct config_item *item, char *page){ struct se_hba *hba = to_stat_tgt_dev(item)->se_hba; return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);} static ssize_t target_stat_tgt_indx_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%u\n", to_stat_tgt_dev(item)->dev_index);} static ssize_t target_stat_tgt_num_lus_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%u\n", LU_COUNT);} static ssize_t target_stat_tgt_status_show(struct config_item *item, char *page){ if (to_stat_tgt_dev(item)->export_count) return snprintf(page, PAGE_SIZE, "activated\n"); else return snprintf(page, PAGE_SIZE, "deactivated\n");} static ssize_t target_stat_tgt_non_access_lus_show(struct config_item *item, char *page){ int non_accessible_lus; if (to_stat_tgt_dev(item)->export_count) non_accessible_lus = 0; else non_accessible_lus = 1; return snprintf(page, PAGE_SIZE, "%u\n", non_accessible_lus);} static ssize_t target_stat_tgt_resets_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&to_stat_tgt_dev(item)->num_resets));} static ssize_t target_stat_tgt_aborts_complete_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&to_stat_tgt_dev(item)->aborts_complete));} static ssize_t target_stat_tgt_aborts_no_task_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&to_stat_tgt_dev(item)->aborts_no_task));} CONFIGFS_ATTR_RO(target_stat_tgt_, inst);CONFIGFS_ATTR_RO(target_stat_tgt_, indx);CONFIGFS_ATTR_RO(target_stat_tgt_, num_lus);CONFIGFS_ATTR_RO(target_stat_tgt_, status);CONFIGFS_ATTR_RO(target_stat_tgt_, non_access_lus);CONFIGFS_ATTR_RO(target_stat_tgt_, resets);CONFIGFS_ATTR_RO(target_stat_tgt_, aborts_complete);CONFIGFS_ATTR_RO(target_stat_tgt_, aborts_no_task); static struct configfs_attribute *target_stat_scsi_tgt_dev_attrs[] = { &target_stat_tgt_attr_inst, &target_stat_tgt_attr_indx, &target_stat_tgt_attr_num_lus, &target_stat_tgt_attr_status, &target_stat_tgt_attr_non_access_lus, &target_stat_tgt_attr_resets, &target_stat_tgt_attr_aborts_complete, &target_stat_tgt_attr_aborts_no_task, NULL,}; static const struct config_item_type target_stat_scsi_tgt_dev_cit = { .ct_attrs = target_stat_scsi_tgt_dev_attrs, .ct_owner = THIS_MODULE,}; /* * SCSI Logical Unit Table */ static struct se_device *to_stat_lu_dev(struct config_item *item){ struct se_dev_stat_grps *sgrps = container_of(to_config_group(item), struct se_dev_stat_grps, scsi_lu_group); return container_of(sgrps, struct se_device, dev_stat_grps);} static ssize_t target_stat_lu_inst_show(struct config_item *item, char *page){ struct se_hba *hba = to_stat_lu_dev(item)->se_hba; return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index);} static ssize_t target_stat_lu_dev_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%u\n", to_stat_lu_dev(item)->dev_index);} static ssize_t target_stat_lu_indx_show(struct config_item *item, char *page){ return snprintf(page, PAGE_SIZE, "%u\n", SCSI_LU_INDEX);} static ssize_t target_stat_lu_lun_show(struct config_item *item, char *page){ /* FIXME: scsiLuDefaultLun */ return snprintf(page, PAGE_SIZE, "%llu\n", (unsigned long long)0);} static ssize_t target_stat_lu_lu_name_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); /* scsiLuWwnName */ return snprintf(page, PAGE_SIZE, "%s\n", (strlen(dev->t10_wwn.unit_serial)) ? dev->t10_wwn.unit_serial : "None");} static ssize_t target_stat_lu_vend_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_VENDOR_LEN) "s\n", dev->t10_wwn.vendor);} static ssize_t target_stat_lu_prod_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_MODEL_LEN) "s\n", dev->t10_wwn.model);} static ssize_t target_stat_lu_rev_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_REVISION_LEN) "s\n", dev->t10_wwn.revision);} static ssize_t target_stat_lu_dev_type_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); /* scsiLuPeripheralType */ return snprintf(page, PAGE_SIZE, "%u\n", dev->transport->get_device_type(dev));} static ssize_t target_stat_lu_status_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); /* scsiLuStatus */ return snprintf(page, PAGE_SIZE, "%s\n", (dev->export_count) ? "available" : "notavailable");} static ssize_t target_stat_lu_state_bit_show(struct config_item *item, char *page){ /* scsiLuState */ return snprintf(page, PAGE_SIZE, "exposed\n");} #define per_cpu_stat_snprintf(stats_struct, prefix, field, shift) \static ssize_t \per_cpu_stat_##prefix##_snprintf(struct stats_struct __percpu *per_cpu_stats, \ char *page) \{ \ struct stats_struct *stats; \ unsigned int cpu; \ u64 sum = 0; \ \ for_each_possible_cpu(cpu) { \ stats = per_cpu_ptr(per_cpu_stats, cpu); \ sum += stats->field; \ } \ \ return snprintf(page, PAGE_SIZE, "%llu\n", sum >> shift); \} #define lu_show_per_cpu_stat(prefix, field, shift) \per_cpu_stat_snprintf(se_dev_io_stats, prefix, field, shift); \static ssize_t \target_stat_##prefix##_show(struct config_item *item, char *page) \{ \ struct se_device *dev = to_stat_lu_dev(item); \ \ return per_cpu_stat_##prefix##_snprintf(dev->stats, page); \} \ /* scsiLuNumCommands */lu_show_per_cpu_stat(lu_num_cmds, total_cmds, 0);/* scsiLuReadMegaBytes */lu_show_per_cpu_stat(lu_read_mbytes, read_bytes, 20);/* scsiLuWrittenMegaBytes */lu_show_per_cpu_stat(lu_write_mbytes, write_bytes, 20); static ssize_t target_stat_lu_resets_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); /* scsiLuInResets */ return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&dev->num_resets));} static ssize_t target_stat_lu_full_stat_show(struct config_item *item, char *page){ /* FIXME: scsiLuOutTaskSetFullStatus */ return snprintf(page, PAGE_SIZE, "%u\n", 0);} static ssize_t target_stat_lu_hs_num_cmds_show(struct config_item *item, char *page){ /* FIXME: scsiLuHSInCommands */ return snprintf(page, PAGE_SIZE, "%u\n", 0);} static ssize_t target_stat_lu_creation_time_show(struct config_item *item, char *page){ struct se_device *dev = to_stat_lu_dev(item); /* scsiLuCreationTime */ return snprintf(page, PAGE_SIZE, "%u\n", (u32)(((u32)dev->creation_time - INITIAL_JIFFIES) * 100 / HZ));} CONFIGFS_ATTR_RO(target_stat_lu_, inst);CONFIGFS_ATTR_RO(target_stat_lu_, dev);CONFIGFS_ATTR_RO(target_stat_lu_, indx);CONFIGFS_ATTR_RO(target_stat_lu_, lun);CONFIGFS_ATTR_RO(target_stat_lu_, lu_name);CONFIGFS_ATTR_RO(target_stat_lu_, vend);CONFIGFS_ATTR_RO(target_stat_lu_, prod);CONFIGFS_ATTR_RO(target_stat_lu_, rev);CONFIGFS_ATTR_RO(target_stat_lu_, dev_type);CONFIGFS_ATTR_RO(target_stat_lu_, status);CONFIGFS_ATTR_RO(target_stat_lu_, state_bit);CONFIGFS_ATTR_RO(target_stat_lu_, num_cmds);CONFIGFS_ATTR_RO(target_stat_lu_, read_mbytes);CONFIGFS_ATTR_RO(target_stat_lu_, write_mbytes);CONFIGFS_ATTR_RO(target_stat_lu_, resets);CONFIGFS_ATTR_RO(target_stat_lu_, full_stat);CONFIGFS_ATTR_RO(target_stat_lu_, hs_num_cmds);CONFIGFS_ATTR_RO(target_stat_lu_, creation_time); static struct configfs_attribute *target_stat_scsi_lu_attrs[] = { &target_stat_lu_attr_inst, &target_stat_lu_attr_dev, &target_stat_lu_attr_indx, &target_stat_lu_attr_lun, &target_stat_lu_attr_lu_name, &target_stat_lu_attr_vend, &target_stat_lu_attr_prod, &target_stat_lu_attr_rev, &target_stat_lu_attr_dev_type, &target_stat_lu_attr_status, &target_stat_lu_attr_state_bit, &target_stat_lu_attr_num_cmds, &target_stat_lu_attr_read_mbytes, &target_stat_lu_attr_write_mbytes, &target_stat_lu_attr_resets, &target_stat_lu_attr_full_stat, &target_stat_lu_attr_hs_num_cmds, &target_stat_lu_attr_creation_time, NULL,}; static const struct config_item_type target_stat_scsi_lu_cit = { .ct_attrs = target_stat_scsi_lu_attrs, .ct_owner = THIS_MODULE,}; /* * Called from target_core_configfs.c:target_core_make_subdev() to setup * the target statistics groups + configfs CITs located in target_core_stat.c */void target_stat_setup_dev_default_groups(struct se_device *dev){ config_group_init_type_name(&dev->dev_stat_grps.scsi_dev_group, "scsi_dev", &target_stat_scsi_dev_cit); configfs_add_default_group(&dev->dev_stat_grps.scsi_dev_group, &dev->dev_stat_grps.stat_group); config_group_init_type_name(&dev->dev_stat_grps.scsi_tgt_dev_group, "scsi_tgt_dev", &target_stat_scsi_tgt_dev_cit); configfs_add_default_group(&dev->dev_stat_grps.scsi_tgt_dev_group, &dev->dev_stat_grps.stat_group); config_group_init_type_name(&dev->dev_stat_grps.scsi_lu_group, "scsi_lu", &target_stat_scsi_lu_cit); configfs_add_default_group(&dev->dev_stat_grps.scsi_lu_group, &dev->dev_stat_grps.stat_group);} /* * SCSI Port Table */ static struct se_lun *to_stat_port(struct config_item *item){ struct se_port_stat_grps *pgrps = container_of(to_config_group(item), struct se_port_stat_grps, scsi_port_group); return container_of(pgrps, struct se_lun, port_stat_grps);} static ssize_t target_stat_port_inst_show(struct config_item *item, char *page){ struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%u\n", dev->hba_index); rcu_read_unlock(); return ret;} static ssize_t target_stat_port_dev_show(struct config_item *item, char *page){ struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index); rcu_read_unlock(); return ret;} static ssize_t target_stat_port_indx_show(struct config_item *item, char *page){ struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_tpg->tpg_rtpi); rcu_read_unlock(); return ret;} static ssize_t target_stat_port_role_show(struct config_item *item, char *page){ struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index); rcu_read_unlock(); return ret;} static ssize_t target_stat_port_busy_count_show(struct config_item *item, char *page){ struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) { /* FIXME: scsiPortBusyStatuses */ ret = snprintf(page, PAGE_SIZE, "%u\n", 0); } rcu_read_unlock(); return ret;} CONFIGFS_ATTR_RO(target_stat_port_, inst);CONFIGFS_ATTR_RO(target_stat_port_, dev);CONFIGFS_ATTR_RO(target_stat_port_, indx);Lines 1–500 of 1312. 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// SPDX-License-Identifier: GPL-2.0-or-later /******************************************************************************* * Filename: target_core_stat.c * * Modern ConfigFS group context specific statistics based on original * target_core_mib.c code * * (c) Copyright 2006-2013 Datera, Inc. * * Nicholas A. Bellinger <nab@linux-iscsi.org> * ******************************************************************************/ #include <linux/kernel.h> #include <linux/module.h> #include <linux/delay.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/utsname.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/configfs.h> #include <target/target_core_base.h> #include <target/target_core_backend.h> #include <target/target_core_fabric.h> #include "target_core_internal.h" #ifndef INITIAL_JIFFIES #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ)) #endif #define SCSI_LU_INDEX 1 #define LU_COUNT 1 /* * SCSI Device Table */ static struct se_device *to_stat_dev(struct config_item *item) { struct se_dev_stat_grps *sgrps = container_of(to_config_group(item), struct se_dev_stat_grps, scsi_dev_group); return container_of(sgrps, struct se_device, dev_stat_grps); } static ssize_t target_stat_inst_show(struct config_item *item, char *page) { struct se_hba *hba = to_stat_dev(item)->se_hba; return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); } static ssize_t target_stat_indx_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%u\n", to_stat_dev(item)->dev_index); } static ssize_t target_stat_role_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "Target\n"); } static ssize_t target_stat_ports_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%u\n", to_stat_dev(item)->export_count); } CONFIGFS_ATTR_RO(target_stat_, inst); CONFIGFS_ATTR_RO(target_stat_, indx); CONFIGFS_ATTR_RO(target_stat_, role); CONFIGFS_ATTR_RO(target_stat_, ports); static struct configfs_attribute *target_stat_scsi_dev_attrs[] = { &target_stat_attr_inst, &target_stat_attr_indx, &target_stat_attr_role, &target_stat_attr_ports, NULL, }; static const struct config_item_type target_stat_scsi_dev_cit = { .ct_attrs = target_stat_scsi_dev_attrs, .ct_owner = THIS_MODULE, }; /* * SCSI Target Device Table */ static struct se_device *to_stat_tgt_dev(struct config_item *item) { struct se_dev_stat_grps *sgrps = container_of(to_config_group(item), struct se_dev_stat_grps, scsi_tgt_dev_group); return container_of(sgrps, struct se_device, dev_stat_grps); } static ssize_t target_stat_tgt_inst_show(struct config_item *item, char *page) { struct se_hba *hba = to_stat_tgt_dev(item)->se_hba; return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); } static ssize_t target_stat_tgt_indx_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%u\n", to_stat_tgt_dev(item)->dev_index); } static ssize_t target_stat_tgt_num_lus_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%u\n", LU_COUNT); } static ssize_t target_stat_tgt_status_show(struct config_item *item, char *page) { if (to_stat_tgt_dev(item)->export_count) return snprintf(page, PAGE_SIZE, "activated\n"); else return snprintf(page, PAGE_SIZE, "deactivated\n"); } static ssize_t target_stat_tgt_non_access_lus_show(struct config_item *item, char *page) { int non_accessible_lus; if (to_stat_tgt_dev(item)->export_count) non_accessible_lus = 0; else non_accessible_lus = 1; return snprintf(page, PAGE_SIZE, "%u\n", non_accessible_lus); } static ssize_t target_stat_tgt_resets_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&to_stat_tgt_dev(item)->num_resets)); } static ssize_t target_stat_tgt_aborts_complete_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&to_stat_tgt_dev(item)->aborts_complete)); } static ssize_t target_stat_tgt_aborts_no_task_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&to_stat_tgt_dev(item)->aborts_no_task)); } CONFIGFS_ATTR_RO(target_stat_tgt_, inst); CONFIGFS_ATTR_RO(target_stat_tgt_, indx); CONFIGFS_ATTR_RO(target_stat_tgt_, num_lus); CONFIGFS_ATTR_RO(target_stat_tgt_, status); CONFIGFS_ATTR_RO(target_stat_tgt_, non_access_lus); CONFIGFS_ATTR_RO(target_stat_tgt_, resets); CONFIGFS_ATTR_RO(target_stat_tgt_, aborts_complete); CONFIGFS_ATTR_RO(target_stat_tgt_, aborts_no_task); static struct configfs_attribute *target_stat_scsi_tgt_dev_attrs[] = { &target_stat_tgt_attr_inst, &target_stat_tgt_attr_indx, &target_stat_tgt_attr_num_lus, &target_stat_tgt_attr_status, &target_stat_tgt_attr_non_access_lus, &target_stat_tgt_attr_resets, &target_stat_tgt_attr_aborts_complete, &target_stat_tgt_attr_aborts_no_task, NULL, }; static const struct config_item_type target_stat_scsi_tgt_dev_cit = { .ct_attrs = target_stat_scsi_tgt_dev_attrs, .ct_owner = THIS_MODULE, }; /* * SCSI Logical Unit Table */ static struct se_device *to_stat_lu_dev(struct config_item *item) { struct se_dev_stat_grps *sgrps = container_of(to_config_group(item), struct se_dev_stat_grps, scsi_lu_group); return container_of(sgrps, struct se_device, dev_stat_grps); } static ssize_t target_stat_lu_inst_show(struct config_item *item, char *page) { struct se_hba *hba = to_stat_lu_dev(item)->se_hba; return snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); } static ssize_t target_stat_lu_dev_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%u\n", to_stat_lu_dev(item)->dev_index); } static ssize_t target_stat_lu_indx_show(struct config_item *item, char *page) { return snprintf(page, PAGE_SIZE, "%u\n", SCSI_LU_INDEX); } static ssize_t target_stat_lu_lun_show(struct config_item *item, char *page) { /* FIXME: scsiLuDefaultLun */ return snprintf(page, PAGE_SIZE, "%llu\n", (unsigned long long)0); } static ssize_t target_stat_lu_lu_name_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); /* scsiLuWwnName */ return snprintf(page, PAGE_SIZE, "%s\n", (strlen(dev->t10_wwn.unit_serial)) ? dev->t10_wwn.unit_serial : "None"); } static ssize_t target_stat_lu_vend_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_VENDOR_LEN) "s\n", dev->t10_wwn.vendor); } static ssize_t target_stat_lu_prod_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_MODEL_LEN) "s\n", dev->t10_wwn.model); } static ssize_t target_stat_lu_rev_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_REVISION_LEN) "s\n", dev->t10_wwn.revision); } static ssize_t target_stat_lu_dev_type_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); /* scsiLuPeripheralType */ return snprintf(page, PAGE_SIZE, "%u\n", dev->transport->get_device_type(dev)); } static ssize_t target_stat_lu_status_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); /* scsiLuStatus */ return snprintf(page, PAGE_SIZE, "%s\n", (dev->export_count) ? "available" : "notavailable"); } static ssize_t target_stat_lu_state_bit_show(struct config_item *item, char *page) { /* scsiLuState */ return snprintf(page, PAGE_SIZE, "exposed\n"); } #define per_cpu_stat_snprintf(stats_struct, prefix, field, shift) \ static ssize_t \ per_cpu_stat_##prefix##_snprintf(struct stats_struct __percpu *per_cpu_stats, \ char *page) \ { \ struct stats_struct *stats; \ unsigned int cpu; \ u64 sum = 0; \ \ for_each_possible_cpu(cpu) { \ stats = per_cpu_ptr(per_cpu_stats, cpu); \ sum += stats->field; \ } \ \ return snprintf(page, PAGE_SIZE, "%llu\n", sum >> shift); \ } #define lu_show_per_cpu_stat(prefix, field, shift) \ per_cpu_stat_snprintf(se_dev_io_stats, prefix, field, shift); \ static ssize_t \ target_stat_##prefix##_show(struct config_item *item, char *page) \ { \ struct se_device *dev = to_stat_lu_dev(item); \ \ return per_cpu_stat_##prefix##_snprintf(dev->stats, page); \ } \ /* scsiLuNumCommands */ lu_show_per_cpu_stat(lu_num_cmds, total_cmds, 0); /* scsiLuReadMegaBytes */ lu_show_per_cpu_stat(lu_read_mbytes, read_bytes, 20); /* scsiLuWrittenMegaBytes */ lu_show_per_cpu_stat(lu_write_mbytes, write_bytes, 20); static ssize_t target_stat_lu_resets_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); /* scsiLuInResets */ return snprintf(page, PAGE_SIZE, "%lu\n", atomic_long_read(&dev->num_resets)); } static ssize_t target_stat_lu_full_stat_show(struct config_item *item, char *page) { /* FIXME: scsiLuOutTaskSetFullStatus */ return snprintf(page, PAGE_SIZE, "%u\n", 0); } static ssize_t target_stat_lu_hs_num_cmds_show(struct config_item *item, char *page) { /* FIXME: scsiLuHSInCommands */ return snprintf(page, PAGE_SIZE, "%u\n", 0); } static ssize_t target_stat_lu_creation_time_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); /* scsiLuCreationTime */ return snprintf(page, PAGE_SIZE, "%u\n", (u32)(((u32)dev->creation_time - INITIAL_JIFFIES) * 100 / HZ)); } CONFIGFS_ATTR_RO(target_stat_lu_, inst); CONFIGFS_ATTR_RO(target_stat_lu_, dev); CONFIGFS_ATTR_RO(target_stat_lu_, indx); CONFIGFS_ATTR_RO(target_stat_lu_, lun); CONFIGFS_ATTR_RO(target_stat_lu_, lu_name); CONFIGFS_ATTR_RO(target_stat_lu_, vend); CONFIGFS_ATTR_RO(target_stat_lu_, prod); CONFIGFS_ATTR_RO(target_stat_lu_, rev); CONFIGFS_ATTR_RO(target_stat_lu_, dev_type); CONFIGFS_ATTR_RO(target_stat_lu_, status); CONFIGFS_ATTR_RO(target_stat_lu_, state_bit); CONFIGFS_ATTR_RO(target_stat_lu_, num_cmds); CONFIGFS_ATTR_RO(target_stat_lu_, read_mbytes); CONFIGFS_ATTR_RO(target_stat_lu_, write_mbytes); CONFIGFS_ATTR_RO(target_stat_lu_, resets); CONFIGFS_ATTR_RO(target_stat_lu_, full_stat); CONFIGFS_ATTR_RO(target_stat_lu_, hs_num_cmds); CONFIGFS_ATTR_RO(target_stat_lu_, creation_time); static struct configfs_attribute *target_stat_scsi_lu_attrs[] = { &target_stat_lu_attr_inst, &target_stat_lu_attr_dev, &target_stat_lu_attr_indx, &target_stat_lu_attr_lun, &target_stat_lu_attr_lu_name, &target_stat_lu_attr_vend, &target_stat_lu_attr_prod, &target_stat_lu_attr_rev, &target_stat_lu_attr_dev_type, &target_stat_lu_attr_status, &target_stat_lu_attr_state_bit, &target_stat_lu_attr_num_cmds, &target_stat_lu_attr_read_mbytes, &target_stat_lu_attr_write_mbytes, &target_stat_lu_attr_resets, &target_stat_lu_attr_full_stat, &target_stat_lu_attr_hs_num_cmds, &target_stat_lu_attr_creation_time, NULL, }; static const struct config_item_type target_stat_scsi_lu_cit = { .ct_attrs = target_stat_scsi_lu_attrs, .ct_owner = THIS_MODULE, }; /* * Called from target_core_configfs.c:target_core_make_subdev() to setup * the target statistics groups + configfs CITs located in target_core_stat.c */ void target_stat_setup_dev_default_groups(struct se_device *dev) { config_group_init_type_name(&dev->dev_stat_grps.scsi_dev_group, "scsi_dev", &target_stat_scsi_dev_cit); configfs_add_default_group(&dev->dev_stat_grps.scsi_dev_group, &dev->dev_stat_grps.stat_group); config_group_init_type_name(&dev->dev_stat_grps.scsi_tgt_dev_group, "scsi_tgt_dev", &target_stat_scsi_tgt_dev_cit); configfs_add_default_group(&dev->dev_stat_grps.scsi_tgt_dev_group, &dev->dev_stat_grps.stat_group); config_group_init_type_name(&dev->dev_stat_grps.scsi_lu_group, "scsi_lu", &target_stat_scsi_lu_cit); configfs_add_default_group(&dev->dev_stat_grps.scsi_lu_group, &dev->dev_stat_grps.stat_group); } /* * SCSI Port Table */ static struct se_lun *to_stat_port(struct config_item *item) { struct se_port_stat_grps *pgrps = container_of(to_config_group(item), struct se_port_stat_grps, scsi_port_group); return container_of(pgrps, struct se_lun, port_stat_grps); } static ssize_t target_stat_port_inst_show(struct config_item *item, char *page) { struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%u\n", dev->hba_index); rcu_read_unlock(); return ret; } static ssize_t target_stat_port_dev_show(struct config_item *item, char *page) { struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index); rcu_read_unlock(); return ret; } static ssize_t target_stat_port_indx_show(struct config_item *item, char *page) { struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_tpg->tpg_rtpi); rcu_read_unlock(); return ret; } static ssize_t target_stat_port_role_show(struct config_item *item, char *page) { struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index); rcu_read_unlock(); return ret; } static ssize_t target_stat_port_busy_count_show(struct config_item *item, char *page) { struct se_lun *lun = to_stat_port(item); struct se_device *dev; ssize_t ret = -ENODEV; rcu_read_lock(); dev = rcu_dereference(lun->lun_se_dev); if (dev) { /* FIXME: scsiPortBusyStatuses */ ret = snprintf(page, PAGE_SIZE, "%u\n", 0); } rcu_read_unlock(); return ret; } CONFIGFS_ATTR_RO(target_stat_port_, inst); CONFIGFS_ATTR_RO(target_stat_port_, dev); CONFIGFS_ATTR_RO(target_stat_port_, indx);