diff options
Diffstat (limited to 'drivers/target/target_core_device.c')
| -rw-r--r-- | drivers/target/target_core_device.c | 1237 |
1 files changed, 666 insertions, 571 deletions
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 0b25b50900e..98da9016715 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -4,10 +4,7 @@ * This file contains the TCM Virtual Device and Disk Transport * agnostic related functions. * - * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc. - * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved. - * Copyright (c) 2007-2010 Rising Tide Systems - * Copyright (c) 2008-2010 Linux-iSCSI.org + * (c) Copyright 2003-2013 Datera, Inc. * * Nicholas A. Bellinger <nab@kernel.org> * @@ -50,45 +47,39 @@ #include "target_core_pr.h" #include "target_core_ua.h" -static void se_dev_start(struct se_device *dev); -static void se_dev_stop(struct se_device *dev); +DEFINE_MUTEX(g_device_mutex); +LIST_HEAD(g_device_list); static struct se_hba *lun0_hba; -static struct se_subsystem_dev *lun0_su_dev; /* not static, needed by tpg.c */ struct se_device *g_lun0_dev; -int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) +sense_reason_t +transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) { struct se_lun *se_lun = NULL; struct se_session *se_sess = se_cmd->se_sess; struct se_device *dev; unsigned long flags; - if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { - se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; - return -ENODEV; - } + if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) + return TCM_NON_EXISTENT_LUN; spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); - se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; + se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { struct se_dev_entry *deve = se_cmd->se_deve; deve->total_cmds++; - deve->total_bytes += se_cmd->data_length; if ((se_cmd->data_direction == DMA_TO_DEVICE) && (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { - se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" " Access for 0x%08x\n", se_cmd->se_tfo->get_fabric_name(), unpacked_lun); spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); - return -EACCES; + return TCM_WRITE_PROTECTED; } if (se_cmd->data_direction == DMA_TO_DEVICE) @@ -96,13 +87,14 @@ int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) else if (se_cmd->data_direction == DMA_FROM_DEVICE) deve->read_bytes += se_cmd->data_length; - deve->deve_cmds++; - se_lun = deve->se_lun; se_cmd->se_lun = deve->se_lun; se_cmd->pr_res_key = deve->pr_res_key; se_cmd->orig_fe_lun = unpacked_lun; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; + + percpu_ref_get(&se_lun->lun_ref); + se_cmd->lun_ref_active = true; } spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); @@ -113,55 +105,37 @@ int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) * MappedLUN=0 exists for this Initiator Port. */ if (unpacked_lun != 0) { - se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" " Access for 0x%08x\n", se_cmd->se_tfo->get_fabric_name(), unpacked_lun); - return -ENODEV; + return TCM_NON_EXISTENT_LUN; } /* * Force WRITE PROTECT for virtual LUN 0 */ if ((se_cmd->data_direction != DMA_FROM_DEVICE) && - (se_cmd->data_direction != DMA_NONE)) { - se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; - return -EACCES; - } + (se_cmd->data_direction != DMA_NONE)) + return TCM_WRITE_PROTECTED; se_lun = &se_sess->se_tpg->tpg_virt_lun0; se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; se_cmd->orig_fe_lun = 0; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; - } - /* - * Determine if the struct se_lun is online. - * FIXME: Check for LUN_RESET + UNIT Attention - */ - if (se_dev_check_online(se_lun->lun_se_dev) != 0) { - se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; - return -ENODEV; + + percpu_ref_get(&se_lun->lun_ref); + se_cmd->lun_ref_active = true; } /* Directly associate cmd with se_dev */ se_cmd->se_dev = se_lun->lun_se_dev; - /* TODO: get rid of this and use atomics for stats */ dev = se_lun->lun_se_dev; - spin_lock_irqsave(&dev->stats_lock, flags); - dev->num_cmds++; + atomic_long_inc(&dev->num_cmds); if (se_cmd->data_direction == DMA_TO_DEVICE) - dev->write_bytes += se_cmd->data_length; + atomic_long_add(se_cmd->data_length, &dev->write_bytes); else if (se_cmd->data_direction == DMA_FROM_DEVICE) - dev->read_bytes += se_cmd->data_length; - spin_unlock_irqrestore(&dev->stats_lock, flags); - - spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); - list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); - spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); + atomic_long_add(se_cmd->data_length, &dev->read_bytes); return 0; } @@ -175,14 +149,11 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; unsigned long flags; - if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { - se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; + if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) return -ENODEV; - } spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); - se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; + se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun]; deve = se_cmd->se_deve; if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { @@ -199,15 +170,6 @@ int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) " Access for 0x%08x\n", se_cmd->se_tfo->get_fabric_name(), unpacked_lun); - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; - return -ENODEV; - } - /* - * Determine if the struct se_lun is online. - * FIXME: Check for LUN_RESET + UNIT Attention - */ - if (se_dev_check_online(se_lun->lun_se_dev) != 0) { - se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; return -ENODEV; } @@ -240,7 +202,7 @@ struct se_dev_entry *core_get_se_deve_from_rtpi( spin_lock_irq(&nacl->device_list_lock); for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - deve = &nacl->device_list[i]; + deve = nacl->device_list[i]; if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) continue; @@ -263,7 +225,7 @@ struct se_dev_entry *core_get_se_deve_from_rtpi( continue; atomic_inc(&deve->pr_ref_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock_irq(&nacl->device_list_lock); return deve; @@ -286,7 +248,7 @@ int core_free_device_list_for_node( spin_lock_irq(&nacl->device_list_lock); for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - deve = &nacl->device_list[i]; + deve = nacl->device_list[i]; if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) continue; @@ -300,29 +262,18 @@ int core_free_device_list_for_node( lun = deve->se_lun; spin_unlock_irq(&nacl->device_list_lock); - core_update_device_list_for_node(lun, NULL, deve->mapped_lun, - TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); + core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, + TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); spin_lock_irq(&nacl->device_list_lock); } spin_unlock_irq(&nacl->device_list_lock); - kfree(nacl->device_list); + array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG); nacl->device_list = NULL; return 0; } -void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) -{ - struct se_dev_entry *deve; - unsigned long flags; - - spin_lock_irqsave(&se_nacl->device_list_lock, flags); - deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; - deve->deve_cmds--; - spin_unlock_irqrestore(&se_nacl->device_list_lock, flags); -} - void core_update_device_list_access( u32 mapped_lun, u32 lun_access, @@ -331,7 +282,7 @@ void core_update_device_list_access( struct se_dev_entry *deve; spin_lock_irq(&nacl->device_list_lock); - deve = &nacl->device_list[mapped_lun]; + deve = nacl->device_list[mapped_lun]; if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; @@ -342,72 +293,46 @@ void core_update_device_list_access( spin_unlock_irq(&nacl->device_list_lock); } -/* core_update_device_list_for_node(): +/* core_enable_device_list_for_node(): * * */ -int core_update_device_list_for_node( +int core_enable_device_list_for_node( struct se_lun *lun, struct se_lun_acl *lun_acl, u32 mapped_lun, u32 lun_access, struct se_node_acl *nacl, - struct se_portal_group *tpg, - int enable) + struct se_portal_group *tpg) { struct se_port *port = lun->lun_sep; - struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; - int trans = 0; - /* - * If the MappedLUN entry is being disabled, the entry in - * port->sep_alua_list must be removed now before clearing the - * struct se_dev_entry pointers below as logic in - * core_alua_do_transition_tg_pt() depends on these being present. - */ - if (!enable) { - /* - * deve->se_lun_acl will be NULL for demo-mode created LUNs - * that have not been explicitly concerted to MappedLUNs -> - * struct se_lun_acl, but we remove deve->alua_port_list from - * port->sep_alua_list. This also means that active UAs and - * NodeACL context specific PR metadata for demo-mode - * MappedLUN *deve will be released below.. - */ - spin_lock_bh(&port->sep_alua_lock); - list_del(&deve->alua_port_list); - spin_unlock_bh(&port->sep_alua_lock); - } + struct se_dev_entry *deve; spin_lock_irq(&nacl->device_list_lock); - if (enable) { - /* - * Check if the call is handling demo mode -> explict LUN ACL - * transition. This transition must be for the same struct se_lun - * + mapped_lun that was setup in demo mode.. - */ - if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { - if (deve->se_lun_acl != NULL) { - pr_err("struct se_dev_entry->se_lun_acl" - " already set for demo mode -> explict" - " LUN ACL transition\n"); - spin_unlock_irq(&nacl->device_list_lock); - return -EINVAL; - } - if (deve->se_lun != lun) { - pr_err("struct se_dev_entry->se_lun does" - " match passed struct se_lun for demo mode" - " -> explict LUN ACL transition\n"); - spin_unlock_irq(&nacl->device_list_lock); - return -EINVAL; - } - deve->se_lun_acl = lun_acl; - trans = 1; - } else { - deve->se_lun = lun; - deve->se_lun_acl = lun_acl; - deve->mapped_lun = mapped_lun; - deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; + + deve = nacl->device_list[mapped_lun]; + + /* + * Check if the call is handling demo mode -> explicit LUN ACL + * transition. This transition must be for the same struct se_lun + * + mapped_lun that was setup in demo mode.. + */ + if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { + if (deve->se_lun_acl != NULL) { + pr_err("struct se_dev_entry->se_lun_acl" + " already set for demo mode -> explicit" + " LUN ACL transition\n"); + spin_unlock_irq(&nacl->device_list_lock); + return -EINVAL; } + if (deve->se_lun != lun) { + pr_err("struct se_dev_entry->se_lun does" + " match passed struct se_lun for demo mode" + " -> explicit LUN ACL transition\n"); + spin_unlock_irq(&nacl->device_list_lock); + return -EINVAL; + } + deve->se_lun_acl = lun_acl; if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; @@ -417,27 +342,72 @@ int core_update_device_list_for_node( deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; } - if (trans) { - spin_unlock_irq(&nacl->device_list_lock); - return 0; - } - deve->creation_time = get_jiffies_64(); - deve->attach_count++; spin_unlock_irq(&nacl->device_list_lock); + return 0; + } - spin_lock_bh(&port->sep_alua_lock); - list_add_tail(&deve->alua_port_list, &port->sep_alua_list); - spin_unlock_bh(&port->sep_alua_lock); + deve->se_lun = lun; + deve->se_lun_acl = lun_acl; + deve->mapped_lun = mapped_lun; + deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; - return 0; + if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { + deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; + deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; + } else { + deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; + deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; } + + deve->creation_time = get_jiffies_64(); + deve->attach_count++; + spin_unlock_irq(&nacl->device_list_lock); + + spin_lock_bh(&port->sep_alua_lock); + list_add_tail(&deve->alua_port_list, &port->sep_alua_list); + spin_unlock_bh(&port->sep_alua_lock); + + return 0; +} + +/* core_disable_device_list_for_node(): + * + * + */ +int core_disable_device_list_for_node( + struct se_lun *lun, + struct se_lun_acl *lun_acl, + u32 mapped_lun, + u32 lun_access, + struct se_node_acl *nacl, + struct se_portal_group *tpg) +{ + struct se_port *port = lun->lun_sep; + struct se_dev_entry *deve = nacl->device_list[mapped_lun]; + + /* + * If the MappedLUN entry is being disabled, the entry in + * port->sep_alua_list must be removed now before clearing the + * struct se_dev_entry pointers below as logic in + * core_alua_do_transition_tg_pt() depends on these being present. + * + * deve->se_lun_acl will be NULL for demo-mode created LUNs + * that have not been explicitly converted to MappedLUNs -> + * struct se_lun_acl, but we remove deve->alua_port_list from + * port->sep_alua_list. This also means that active UAs and + * NodeACL context specific PR metadata for demo-mode + * MappedLUN *deve will be released below.. + */ + spin_lock_bh(&port->sep_alua_lock); + list_del(&deve->alua_port_list); + spin_unlock_bh(&port->sep_alua_lock); /* * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE * PR operation to complete. */ - spin_unlock_irq(&nacl->device_list_lock); while (atomic_read(&deve->pr_ref_count) != 0) cpu_relax(); + spin_lock_irq(&nacl->device_list_lock); /* * Disable struct se_dev_entry LUN ACL mapping @@ -470,14 +440,14 @@ void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) spin_lock_irq(&nacl->device_list_lock); for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - deve = &nacl->device_list[i]; + deve = nacl->device_list[i]; if (lun != deve->se_lun) continue; spin_unlock_irq(&nacl->device_list_lock); - core_update_device_list_for_node(lun, NULL, + core_disable_device_list_for_node(lun, NULL, deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, - nacl, tpg, 0); + nacl, tpg); spin_lock_irq(&nacl->device_list_lock); } @@ -512,7 +482,7 @@ static struct se_port *core_alloc_port(struct se_device *dev) } again: /* - * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device + * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device * Here is the table from spc4r17 section 7.7.3.8. * * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field @@ -529,7 +499,7 @@ again: list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { /* - * Make sure RELATIVE TARGET PORT IDENTIFER is unique + * Make sure RELATIVE TARGET PORT IDENTIFIER is unique * for 16-bit wrap.. */ if (port->sep_rtpi == port_tmp->sep_rtpi) @@ -546,7 +516,6 @@ static void core_export_port( struct se_port *port, struct se_lun *lun) { - struct se_subsystem_dev *su_dev = dev->se_sub_dev; struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; spin_lock(&dev->se_port_lock); @@ -559,7 +528,8 @@ static void core_export_port( list_add_tail(&port->sep_list, &dev->dev_sep_list); spin_unlock(&dev->se_port_lock); - if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { + if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV && + !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) { tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { pr_err("Unable to allocate t10_alua_tg_pt" @@ -568,7 +538,7 @@ static void core_export_port( } spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, - su_dev->t10_alua.default_tg_pt_gp); + dev->t10_alua.default_tg_pt_gp); spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); pr_debug("%s/%s: Adding to default ALUA Target Port" " Group: alua/default_tg_pt_gp\n", @@ -576,7 +546,7 @@ static void core_export_port( } dev->dev_port_count++; - port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ + port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */ } /* @@ -606,6 +576,7 @@ int core_dev_export( struct se_portal_group *tpg, struct se_lun *lun) { + struct se_hba *hba = dev->se_hba; struct se_port *port; port = core_alloc_port(dev); @@ -613,9 +584,11 @@ int core_dev_export( return PTR_ERR(port); lun->lun_se_dev = dev; - se_dev_start(dev); - atomic_inc(&dev->dev_export_obj.obj_access_count); + spin_lock(&hba->device_lock); + dev->export_count++; + spin_unlock(&hba->device_lock); + core_export_port(dev, tpg, port, lun); return 0; } @@ -625,6 +598,7 @@ void core_dev_unexport( struct se_portal_group *tpg, struct se_lun *lun) { + struct se_hba *hba = dev->se_hba; struct se_port *port = lun->lun_sep; spin_lock(&lun->lun_sep_lock); @@ -635,278 +609,55 @@ void core_dev_unexport( spin_unlock(&lun->lun_sep_lock); spin_lock(&dev->se_port_lock); - atomic_dec(&dev->dev_export_obj.obj_access_count); core_release_port(dev, port); spin_unlock(&dev->se_port_lock); - se_dev_stop(dev); - lun->lun_se_dev = NULL; -} - -int target_report_luns(struct se_task *se_task) -{ - struct se_cmd *se_cmd = se_task->task_se_cmd; - struct se_dev_entry *deve; - struct se_lun *se_lun; - struct se_session *se_sess = se_cmd->se_sess; - unsigned char *buf; - u32 cdb_offset = 0, lun_count = 0, offset = 8, i; - - buf = (unsigned char *) transport_kmap_data_sg(se_cmd); - - /* - * If no struct se_session pointer is present, this struct se_cmd is - * coming via a target_core_mod PASSTHROUGH op, and not through - * a $FABRIC_MOD. In that case, report LUN=0 only. - */ - if (!se_sess) { - int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); - lun_count = 1; - goto done; - } - - spin_lock_irq(&se_sess->se_node_acl->device_list_lock); - for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - deve = &se_sess->se_node_acl->device_list[i]; - if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) - continue; - se_lun = deve->se_lun; - /* - * We determine the correct LUN LIST LENGTH even once we - * have reached the initial allocation length. - * See SPC2-R20 7.19. - */ - lun_count++; - if ((cdb_offset + 8) >= se_cmd->data_length) - continue; - - int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); - offset += 8; - cdb_offset += 8; - } - spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); - - /* - * See SPC3 r07, page 159. - */ -done: - transport_kunmap_data_sg(se_cmd); - lun_count *= 8; - buf[0] = ((lun_count >> 24) & 0xff); - buf[1] = ((lun_count >> 16) & 0xff); - buf[2] = ((lun_count >> 8) & 0xff); - buf[3] = (lun_count & 0xff); - - se_task->task_scsi_status = GOOD; - transport_complete_task(se_task, 1); - return 0; -} - -/* se_release_device_for_hba(): - * - * - */ -void se_release_device_for_hba(struct se_device *dev) -{ - struct se_hba *hba = dev->se_hba; - - if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || - (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || - (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || - (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || - (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) - se_dev_stop(dev); - - if (dev->dev_ptr) { - kthread_stop(dev->process_thread); - if (dev->transport->free_device) - dev->transport->free_device(dev->dev_ptr); - } - spin_lock(&hba->device_lock); - list_del(&dev->dev_list); - hba->dev_count--; + dev->export_count--; spin_unlock(&hba->device_lock); - core_scsi3_free_all_registrations(dev); - se_release_vpd_for_dev(dev); - - kfree(dev); + lun->lun_sep = NULL; + lun->lun_se_dev = NULL; } -void se_release_vpd_for_dev(struct se_device *dev) +static void se_release_vpd_for_dev(struct se_device *dev) { struct t10_vpd *vpd, *vpd_tmp; - spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); + spin_lock(&dev->t10_wwn.t10_vpd_lock); list_for_each_entry_safe(vpd, vpd_tmp, - &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { + &dev->t10_wwn.t10_vpd_list, vpd_list) { list_del(&vpd->vpd_list); kfree(vpd); } - spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); -} - -/* se_free_virtual_device(): - * - * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. - */ -int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) -{ - if (!list_empty(&dev->dev_sep_list)) - dump_stack(); - - core_alua_free_lu_gp_mem(dev); - se_release_device_for_hba(dev); - - return 0; -} - -static void se_dev_start(struct se_device *dev) -{ - struct se_hba *hba = dev->se_hba; - - spin_lock(&hba->device_lock); - atomic_inc(&dev->dev_obj.obj_access_count); - if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { - if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { - dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; - dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; - } else if (dev->dev_status & - TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { - dev->dev_status &= - ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; - dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; - } - } - spin_unlock(&hba->device_lock); + spin_unlock(&dev->t10_wwn.t10_vpd_lock); } -static void se_dev_stop(struct se_device *dev) +static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) { - struct se_hba *hba = dev->se_hba; - - spin_lock(&hba->device_lock); - atomic_dec(&dev->dev_obj.obj_access_count); - if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { - if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { - dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; - dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; - } else if (dev->dev_status & - TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { - dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; - dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; - } - } - spin_unlock(&hba->device_lock); -} - -int se_dev_check_online(struct se_device *dev) -{ - unsigned long flags; - int ret; - - spin_lock_irqsave(&dev->dev_status_lock, flags); - ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || - (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; - spin_unlock_irqrestore(&dev->dev_status_lock, flags); - - return ret; -} - -int se_dev_check_shutdown(struct se_device *dev) -{ - int ret; - - spin_lock_irq(&dev->dev_status_lock); - ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); - spin_unlock_irq(&dev->dev_status_lock); - - return ret; -} - -u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size) -{ - u32 tmp, aligned_max_sectors; + u32 aligned_max_sectors; + u32 alignment; /* * Limit max_sectors to a PAGE_SIZE aligned value for modern * transport_allocate_data_tasks() operation. */ - tmp = rounddown((max_sectors * block_size), PAGE_SIZE); - aligned_max_sectors = (tmp / block_size); - if (max_sectors != aligned_max_sectors) { - printk(KERN_INFO "Rounding down aligned max_sectors from %u" - " to %u\n", max_sectors, aligned_max_sectors); - return aligned_max_sectors; - } + alignment = max(1ul, PAGE_SIZE / block_size); + aligned_max_sectors = rounddown(max_sectors, alignment); - return max_sectors; -} + if (max_sectors != aligned_max_sectors) + pr_info("Rounding down aligned max_sectors from %u to %u\n", + max_sectors, aligned_max_sectors); -void se_dev_set_default_attribs( - struct se_device *dev, - struct se_dev_limits *dev_limits) -{ - struct queue_limits *limits = &dev_limits->limits; - - dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; - dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; - dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; - dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; - dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; - dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; - dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; - dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; - dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; - dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; - dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; - dev->se_sub_dev->se_dev_attrib.is_nonrot = DA_IS_NONROT; - dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; - /* - * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK - * iblock_create_virtdevice() from struct queue_limits values - * if blk_queue_discard()==1 - */ - dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; - dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = - DA_MAX_UNMAP_BLOCK_DESC_COUNT; - dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; - dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = - DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; - /* - * block_size is based on subsystem plugin dependent requirements. - */ - dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size; - dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size; - /* - * max_sectors is based on subsystem plugin dependent requirements. - */ - dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; - /* - * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() - */ - limits->max_sectors = se_dev_align_max_sectors(limits->max_sectors, - limits->logical_block_size); - dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors; - /* - * Set optimal_sectors from max_sectors, which can be lowered via - * configfs. - */ - dev->se_sub_dev->se_dev_attrib.optimal_sectors = limits->max_sectors; - /* - * queue_depth is based on subsystem plugin dependent requirements. - */ - dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; - dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth; + return aligned_max_sectors; } int se_dev_set_max_unmap_lba_count( struct se_device *dev, u32 max_unmap_lba_count) { - dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count; + dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count; pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n", - dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); + dev, dev->dev_attrib.max_unmap_lba_count); return 0; } @@ -914,10 +665,10 @@ int se_dev_set_max_unmap_block_desc_count( struct se_device *dev, u32 max_unmap_block_desc_count) { - dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = + dev->dev_attrib.max_unmap_block_desc_count = max_unmap_block_desc_count; pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n", - dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count); + dev, dev->dev_attrib.max_unmap_block_desc_count); return 0; } @@ -925,9 +676,9 @@ int se_dev_set_unmap_granularity( struct se_device *dev, u32 unmap_granularity) { - dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; + dev->dev_attrib.unmap_granularity = unmap_granularity; pr_debug("dev[%p]: Set unmap_granularity: %u\n", - dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); + dev, dev->dev_attrib.unmap_granularity); return 0; } @@ -935,9 +686,57 @@ int se_dev_set_unmap_granularity_alignment( struct se_device *dev, u32 unmap_granularity_alignment) { - dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; + dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n", - dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); + dev, dev->dev_attrib.unmap_granularity_alignment); + return 0; +} + +int se_dev_set_max_write_same_len( + struct se_device *dev, + u32 max_write_same_len) +{ + dev->dev_attrib.max_write_same_len = max_write_same_len; + pr_debug("dev[%p]: Set max_write_same_len: %u\n", + dev, dev->dev_attrib.max_write_same_len); + return 0; +} + +static void dev_set_t10_wwn_model_alias(struct se_device *dev) +{ + const char *configname; + + configname = config_item_name(&dev->dev_group.cg_item); + if (strlen(configname) >= 16) { + pr_warn("dev[%p]: Backstore name '%s' is too long for " + "INQUIRY_MODEL, truncating to 16 bytes\n", dev, + configname); + } + snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); +} + +int se_dev_set_emulate_model_alias(struct se_device *dev, int flag) +{ + if (dev->export_count) { + pr_err("dev[%p]: Unable to change model alias" + " while export_count is %d\n", + dev, dev->export_count); + return -EINVAL; + } + + if (flag != 0 && flag != 1) { + pr_err("Illegal value %d\n", flag); + return -EINVAL; + } + + if (flag) { + dev_set_t10_wwn_model_alias(dev); + } else { + strncpy(&dev->t10_wwn.model[0], + dev->transport->inquiry_prod, 16); + } + dev->dev_attrib.emulate_model_alias = flag; + return 0; } @@ -963,13 +762,14 @@ int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) return -EINVAL; } - if (flag && dev->transport->fua_write_emulated == 0) { - pr_err("fua_write_emulated not supported\n"); + if (flag && + dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { + pr_err("emulate_fua_write not supported for pSCSI\n"); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; + dev->dev_attrib.emulate_fua_write = flag; pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", - dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); + dev, dev->dev_attrib.emulate_fua_write); return 0; } @@ -994,13 +794,20 @@ int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) pr_err("Illegal value %d\n", flag); return -EINVAL; } - if (flag && dev->transport->write_cache_emulated == 0) { - pr_err("write_cache_emulated not supported\n"); + if (flag && + dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { + pr_err("emulate_write_cache not supported for pSCSI\n"); + return -EINVAL; + } + if (flag && + dev->transport->get_write_cache) { + pr_err("emulate_write_cache not supported for this device\n"); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; + + dev->dev_attrib.emulate_write_cache = flag; pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", - dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); + dev, dev->dev_attrib.emulate_write_cache); return 0; } @@ -1011,16 +818,15 @@ int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) return -EINVAL; } - if (atomic_read(&dev->dev_export_obj.obj_access_count)) { + if (dev->export_count) { pr_err("dev[%p]: Unable to change SE Device" - " UA_INTRLCK_CTRL while dev_export_obj: %d count" - " exists\n", dev, - atomic_read(&dev->dev_export_obj.obj_access_count)); + " UA_INTRLCK_CTRL while export_count is %d\n", + dev, dev->export_count); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; + dev->dev_attrib.emulate_ua_intlck_ctrl = flag; pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", - dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); + dev, dev->dev_attrib.emulate_ua_intlck_ctrl); return 0; } @@ -1032,15 +838,15 @@ int se_dev_set_emulate_tas(struct se_device *dev, int flag) return -EINVAL; } - if (atomic_read(&dev->dev_export_obj.obj_access_count)) { + if (dev->export_count) { pr_err("dev[%p]: Unable to change SE Device TAS while" - " dev_export_obj: %d count exists\n", dev, - atomic_read(&dev->dev_export_obj.obj_access_count)); + " export_count is %d\n", + dev, dev->export_count); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; + dev->dev_attrib.emulate_tas = flag; pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", - dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); + dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); return 0; } @@ -1055,12 +861,12 @@ int se_dev_set_emulate_tpu(struct se_device *dev, int flag) * We expect this value to be non-zero when generic Block Layer * Discard supported is detected iblock_create_virtdevice(). */ - if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { + if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { pr_err("Generic Block Discard not supported\n"); return -ENOSYS; } - dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; + dev->dev_attrib.emulate_tpu = flag; pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", dev, flag); return 0; @@ -1076,26 +882,140 @@ int se_dev_set_emulate_tpws(struct se_device *dev, int flag) * We expect this value to be non-zero when generic Block Layer * Discard supported is detected iblock_create_virtdevice(). */ - if (flag && !dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count) { + if (flag && !dev->dev_attrib.max_unmap_block_desc_count) { pr_err("Generic Block Discard not supported\n"); return -ENOSYS; } - dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; + dev->dev_attrib.emulate_tpws = flag; pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", dev, flag); return 0; } +int se_dev_set_emulate_caw(struct se_device *dev, int flag) +{ + if (flag != 0 && flag != 1) { + pr_err("Illegal value %d\n", flag); + return -EINVAL; + } + dev->dev_attrib.emulate_caw = flag; + pr_debug("dev[%p]: SE Device CompareAndWrite (AtomicTestandSet): %d\n", + dev, flag); + + return 0; +} + +int se_dev_set_emulate_3pc(struct se_device *dev, int flag) +{ + if (flag != 0 && flag != 1) { + pr_err("Illegal value %d\n", flag); + return -EINVAL; + } + dev->dev_attrib.emulate_3pc = flag; + pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n", + dev, flag); + + return 0; +} + +int se_dev_set_pi_prot_type(struct se_device *dev, int flag) +{ + int rc, old_prot = dev->dev_attrib.pi_prot_type; + + if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { + pr_err("Illegal value %d for pi_prot_type\n", flag); + return -EINVAL; + } + if (flag == 2) { + pr_err("DIF TYPE2 protection currently not supported\n"); + return -ENOSYS; + } + if (dev->dev_attrib.hw_pi_prot_type) { + pr_warn("DIF protection enabled on underlying hardware," + " ignoring\n"); + return 0; + } + if (!dev->transport->init_prot || !dev->transport->free_prot) { + /* 0 is only allowed value for non-supporting backends */ + if (flag == 0) + return 0; + + pr_err("DIF protection not supported by backend: %s\n", + dev->transport->name); + return -ENOSYS; + } + if (!(dev->dev_flags & DF_CONFIGURED)) { + pr_err("DIF protection requires device to be configured\n"); + return -ENODEV; + } + if (dev->export_count) { + pr_err("dev[%p]: Unable to change SE Device PROT type while" + " export_count is %d\n", dev, dev->export_count); + return -EINVAL; + } + + dev->dev_attrib.pi_prot_type = flag; + + if (flag && !old_prot) { + rc = dev->transport->init_prot(dev); + if (rc) { + dev->dev_attrib.pi_prot_type = old_prot; + return rc; + } + + } else if (!flag && old_prot) { + dev->transport->free_prot(dev); + } + pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); + + return 0; +} + +int se_dev_set_pi_prot_format(struct se_device *dev, int flag) +{ + int rc; + + if (!flag) + return 0; + + if (flag != 1) { + pr_err("Illegal value %d for pi_prot_format\n", flag); + return -EINVAL; + } + if (!dev->transport->format_prot) { + pr_err("DIF protection format not supported by backend %s\n", + dev->transport->name); + return -ENOSYS; + } + if (!(dev->dev_flags & DF_CONFIGURED)) { + pr_err("DIF protection format requires device to be configured\n"); + return -ENODEV; + } + if (dev->export_count) { + pr_err("dev[%p]: Unable to format SE Device PROT type while" + " export_count is %d\n", dev, dev->export_count); + return -EINVAL; + } + + rc = dev->transport->format_prot(dev); + if (rc) + return rc; + + pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); + + return 0; +} + int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) { if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; + dev->dev_attrib.enforce_pr_isids = flag; pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, - (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); + (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); return 0; } @@ -1105,7 +1025,7 @@ int se_dev_set_is_nonrot(struct se_device *dev, int flag) printk(KERN_ERR "Illegal value %d\n", flag); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.is_nonrot = flag; + dev->dev_attrib.is_nonrot = flag; pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n", dev, flag); return 0; @@ -1118,7 +1038,7 @@ int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) " reordering not implemented\n", dev); return -ENOSYS; } - dev->se_sub_dev->se_dev_attrib.emulate_rest_reord = flag; + dev->dev_attrib.emulate_rest_reord = flag; pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag); return 0; } @@ -1128,10 +1048,10 @@ int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag) */ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) { - if (atomic_read(&dev->dev_export_obj.obj_access_count)) { + if (dev->export_count) { pr_err("dev[%p]: Unable to change SE Device TCQ while" - " dev_export_obj: %d count exists\n", dev, - atomic_read(&dev->dev_export_obj.obj_access_count)); + " export_count is %d\n", + dev, dev->export_count); return -EINVAL; } if (!queue_depth) { @@ -1141,73 +1061,65 @@ int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) } if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { + if (queue_depth > dev->dev_attrib.hw_queue_depth) { pr_err("dev[%p]: Passed queue_depth: %u" " exceeds TCM/SE_Device TCQ: %u\n", dev, queue_depth, - dev->se_sub_dev->se_dev_attrib.hw_queue_depth); + dev->dev_attrib.hw_queue_depth); return -EINVAL; } } else { - if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) { - if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { + if (queue_depth > dev->dev_attrib.queue_depth) { + if (queue_depth > dev->dev_attrib.hw_queue_depth) { pr_err("dev[%p]: Passed queue_depth:" " %u exceeds TCM/SE_Device MAX" " TCQ: %u\n", dev, queue_depth, - dev->se_sub_dev->se_dev_attrib.hw_queue_depth); + dev->dev_attrib.hw_queue_depth); return -EINVAL; } } } - dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth; + dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth; pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, queue_depth); return 0; } -int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) +int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors) { - int force = 0; /* Force setting for VDEVS */ + int block_size = dev->dev_attrib.block_size; - if (atomic_read(&dev->dev_export_obj.obj_access_count)) { + if (dev->export_count) { pr_err("dev[%p]: Unable to change SE Device" - " max_sectors while dev_export_obj: %d count exists\n", - dev, atomic_read(&dev->dev_export_obj.obj_access_count)); + " fabric_max_sectors while export_count is %d\n", + dev, dev->export_count); return -EINVAL; } - if (!max_sectors) { + if (!fabric_max_sectors) { pr_err("dev[%p]: Illegal ZERO value for" - " max_sectors\n", dev); + " fabric_max_sectors\n", dev); return -EINVAL; } - if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { - pr_err("dev[%p]: Passed max_sectors: %u less than" - " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, + if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) { + pr_err("dev[%p]: Passed fabric_max_sectors: %u less than" + " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors, DA_STATUS_MAX_SECTORS_MIN); return -EINVAL; } if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { - if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { - pr_err("dev[%p]: Passed max_sectors: %u" + if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) { + pr_err("dev[%p]: Passed fabric_max_sectors: %u" " greater than TCM/SE_Device max_sectors:" - " %u\n", dev, max_sectors, - dev->se_sub_dev->se_dev_attrib.hw_max_sectors); + " %u\n", dev, fabric_max_sectors, + dev->dev_attrib.hw_max_sectors); return -EINVAL; } } else { - if (!force && (max_sectors > - dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) { - pr_err("dev[%p]: Passed max_sectors: %u" - " greater than TCM/SE_Device max_sectors" - ": %u, use force=1 to override.\n", dev, - max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors); - return -EINVAL; - } - if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { - pr_err("dev[%p]: Passed max_sectors: %u" + if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) { + pr_err("dev[%p]: Passed fabric_max_sectors: %u" " greater than DA_STATUS_MAX_SECTORS_MAX:" - " %u\n", dev, max_sectors, + " %u\n", dev, fabric_max_sectors, DA_STATUS_MAX_SECTORS_MAX); return -EINVAL; } @@ -1215,21 +1127,25 @@ int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) /* * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks() */ - max_sectors = se_dev_align_max_sectors(max_sectors, - dev->se_sub_dev->se_dev_attrib.block_size); + if (!block_size) { + block_size = 512; + pr_warn("Defaulting to 512 for zero block_size\n"); + } + fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors, + block_size); - dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors; + dev->dev_attrib.fabric_max_sectors = fabric_max_sectors; pr_debug("dev[%p]: SE Device max_sectors changed to %u\n", - dev, max_sectors); + dev, fabric_max_sectors); return 0; } int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) { - if (atomic_read(&dev->dev_export_obj.obj_access_count)) { + if (dev->export_count) { pr_err("dev[%p]: Unable to change SE Device" - " optimal_sectors while dev_export_obj: %d count exists\n", - dev, atomic_read(&dev->dev_export_obj.obj_access_count)); + " optimal_sectors while export_count is %d\n", + dev, dev->export_count); return -EINVAL; } if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { @@ -1237,14 +1153,14 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) " changed for TCM/pSCSI\n", dev); return -EINVAL; } - if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.max_sectors) { + if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) { pr_err("dev[%p]: Passed optimal_sectors %u cannot be" - " greater than max_sectors: %u\n", dev, - optimal_sectors, dev->se_sub_dev->se_dev_attrib.max_sectors); + " greater than fabric_max_sectors: %u\n", dev, + optimal_sectors, dev->dev_attrib.fabric_max_sectors); return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; + dev->dev_attrib.optimal_sectors = optimal_sectors; pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", dev, optimal_sectors); return 0; @@ -1252,10 +1168,10 @@ int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) int se_dev_set_block_size(struct se_device *dev, u32 block_size) { - if (atomic_read(&dev->dev_export_obj.obj_access_count)) { + if (dev->export_count) { pr_err("dev[%p]: Unable to change SE Device block_size" - " while dev_export_obj: %d count exists\n", dev, - atomic_read(&dev->dev_export_obj.obj_access_count)); + " while export_count is %d\n", + dev, dev->export_count); return -EINVAL; } @@ -1276,45 +1192,38 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size) return -EINVAL; } - dev->se_sub_dev->se_dev_attrib.block_size = block_size; + dev->dev_attrib.block_size = block_size; pr_debug("dev[%p]: SE Device block_size changed to %u\n", dev, block_size); + + if (dev->dev_attrib.max_bytes_per_io) + dev->dev_attrib.hw_max_sectors = + dev->dev_attrib.max_bytes_per_io / block_size; + return 0; } struct se_lun *core_dev_add_lun( struct se_portal_group *tpg, - struct se_hba *hba, struct se_device *dev, - u32 lun) + u32 unpacked_lun) { - struct se_lun *lun_p; - u32 lun_access = 0; + struct se_lun *lun; int rc; - if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { - pr_err("Unable to export struct se_device while dev_access_obj: %d\n", - atomic_read(&dev->dev_access_obj.obj_access_count)); - return ERR_PTR(-EACCES); - } - - lun_p = core_tpg_pre_addlun(tpg, lun); - if (IS_ERR(lun_p)) - return lun_p; - - if (dev->dev_flags & DF_READ_ONLY) - lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; - else - lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; + lun = core_tpg_alloc_lun(tpg, unpacked_lun); + if (IS_ERR(lun)) + return lun; - rc = core_tpg_post_addlun(tpg, lun_p, lun_access, dev); + rc = core_tpg_add_lun(tpg, lun, + TRANSPORT_LUNFLAGS_READ_WRITE, dev); if (rc < 0) return ERR_PTR(rc); pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), - tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, - tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id); + tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, + tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); /* * Update LUN maps for dynamically added initiators when * generate_node_acl is enabled. @@ -1334,7 +1243,7 @@ struct se_lun *core_dev_add_lun( spin_unlock_irq(&tpg->acl_node_lock); } - return lun_p; + return lun; } /* core_dev_del_lun(): @@ -1375,7 +1284,7 @@ struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_l spin_unlock(&tpg->tpg_lun_lock); return NULL; } - lun = &tpg->tpg_lun_list[unpacked_lun]; + lun = tpg->tpg_lun_list[unpacked_lun]; if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { pr_err("%s Logical Unit Number: %u is not free on" @@ -1408,7 +1317,7 @@ static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked spin_unlock(&tpg->tpg_lun_lock); return NULL; } - lun = &tpg->tpg_lun_list[unpacked_lun]; + lun = tpg->tpg_lun_list[unpacked_lun]; if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { pr_err("%s Logical Unit Number: %u is not active on" @@ -1425,24 +1334,18 @@ static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked struct se_lun_acl *core_dev_init_initiator_node_lun_acl( struct se_portal_group *tpg, + struct se_node_acl *nacl, u32 mapped_lun, - char *initiatorname, int *ret) { struct se_lun_acl *lacl; - struct se_node_acl *nacl; - if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { + if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { pr_err("%s InitiatorName exceeds maximum size.\n", tpg->se_tpg_tfo->get_fabric_name()); *ret = -EOVERFLOW; return NULL; } - nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); - if (!nacl) { - *ret = -EINVAL; - return NULL; - } lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); if (!lacl) { pr_err("Unable to allocate memory for struct se_lun_acl.\n"); @@ -1453,7 +1356,8 @@ struct se_lun_acl *core_dev_init_initiator_node_lun_acl( INIT_LIST_HEAD(&lacl->lacl_list); lacl->mapped_lun = mapped_lun; lacl->se_lun_nacl = nacl; - snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); + snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", + nacl->initiatorname); return lacl; } @@ -1486,14 +1390,14 @@ int core_dev_add_initiator_node_lun_acl( lacl->se_lun = lun; - if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, - lun_access, nacl, tpg, 1) < 0) + if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun, + lun_access, nacl, tpg) < 0) return -EINVAL; spin_lock(&lun->lun_acl_lock); list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); atomic_inc(&lun->lun_acl_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); spin_unlock(&lun->lun_acl_lock); pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " @@ -1527,11 +1431,11 @@ int core_dev_del_initiator_node_lun_acl( spin_lock(&lun->lun_acl_lock); list_del(&lacl->lacl_list); atomic_dec(&lun->lun_acl_count); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); spin_unlock(&lun->lun_acl_lock); - core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, - TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); + core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun, + TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg); lacl->se_lun = NULL; @@ -1557,73 +1461,267 @@ void core_dev_free_initiator_node_lun_acl( kfree(lacl); } -int core_dev_setup_virtual_lun0(void) +static void scsi_dump_inquiry(struct se_device *dev) +{ + struct t10_wwn *wwn = &dev->t10_wwn; + char buf[17]; + int i, device_type; + /* + * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer + */ + for (i = 0; i < 8; i++) + if (wwn->vendor[i] >= 0x20) + buf[i] = wwn->vendor[i]; + else + buf[i] = ' '; + buf[i] = '\0'; + pr_debug(" Vendor: %s\n", buf); + + for (i = 0; i < 16; i++) + if (wwn->model[i] >= 0x20) + buf[i] = wwn->model[i]; + else + buf[i] = ' '; + buf[i] = '\0'; + pr_debug(" Model: %s\n", buf); + + for (i = 0; i < 4; i++) + if (wwn->revision[i] >= 0x20) + buf[i] = wwn->revision[i]; + else + buf[i] = ' '; + buf[i] = '\0'; + pr_debug(" Revision: %s\n", buf); + + device_type = dev->transport->get_device_type(dev); + pr_debug(" Type: %s ", scsi_device_type(device_type)); +} + +struct se_device *target_alloc_device(struct se_hba *hba, const char *name) { - struct se_hba *hba; struct se_device *dev; - struct se_subsystem_dev *se_dev = NULL; - struct se_subsystem_api *t; - char buf[16]; + struct se_lun *xcopy_lun; + + dev = hba->transport->alloc_device(hba, name); + if (!dev) + return NULL; + + dev->dev_link_magic = SE_DEV_LINK_MAGIC; + dev->se_hba = hba; + dev->transport = hba->transport; + dev->prot_length = sizeof(struct se_dif_v1_tuple); + + INIT_LIST_HEAD(&dev->dev_list); + INIT_LIST_HEAD(&dev->dev_sep_list); + INIT_LIST_HEAD(&dev->dev_tmr_list); + INIT_LIST_HEAD(&dev->delayed_cmd_list); + INIT_LIST_HEAD(&dev->state_list); + INIT_LIST_HEAD(&dev->qf_cmd_list); + INIT_LIST_HEAD(&dev->g_dev_node); + spin_lock_init(&dev->execute_task_lock); + spin_lock_init(&dev->delayed_cmd_lock); + spin_lock_init(&dev->dev_reservation_lock); + spin_lock_init(&dev->se_port_lock); + spin_lock_init(&dev->se_tmr_lock); + spin_lock_init(&dev->qf_cmd_lock); + sema_init(&dev->caw_sem, 1); + atomic_set(&dev->dev_ordered_id, 0); + INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list); + spin_lock_init(&dev->t10_wwn.t10_vpd_lock); + INIT_LIST_HEAD(&dev->t10_pr.registration_list); + INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list); + spin_lock_init(&dev->t10_pr.registration_lock); + spin_lock_init(&dev->t10_pr.aptpl_reg_lock); + INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list); + spin_lock_init(&dev->t10_alua.tg_pt_gps_lock); + INIT_LIST_HEAD(&dev->t10_alua.lba_map_list); + spin_lock_init(&dev->t10_alua.lba_map_lock); + + dev->t10_wwn.t10_dev = dev; + dev->t10_alua.t10_dev = dev; + + dev->dev_attrib.da_dev = dev; + dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS; + dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO; + dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; + dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; + dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; + dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; + dev->dev_attrib.emulate_tas = DA_EMULATE_TAS; + dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU; + dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; + dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; + dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; + dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; + dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; + dev->dev_attrib.is_nonrot = DA_IS_NONROT; + dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD; + dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; + dev->dev_attrib.max_unmap_block_desc_count = + DA_MAX_UNMAP_BLOCK_DESC_COUNT; + dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; + dev->dev_attrib.unmap_granularity_alignment = + DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; + dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN; + dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS; + dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS; + + xcopy_lun = &dev->xcopy_lun; + xcopy_lun->lun_se_dev = dev; + init_completion(&xcopy_lun->lun_shutdown_comp); + INIT_LIST_HEAD(&xcopy_lun->lun_acl_list); + spin_lock_init(&xcopy_lun->lun_acl_lock); + spin_lock_init(&xcopy_lun->lun_sep_lock); + init_completion(&xcopy_lun->lun_ref_comp); + + return dev; +} + +int target_configure_device(struct se_device *dev) +{ + struct se_hba *hba = dev->se_hba; int ret; - hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); - if (IS_ERR(hba)) - return PTR_ERR(hba); + if (dev->dev_flags & DF_CONFIGURED) { + pr_err("se_dev->se_dev_ptr already set for storage" + " object\n"); + return -EEXIST; + } - lun0_hba = hba; - t = hba->transport; + ret = dev->transport->configure_device(dev); + if (ret) + goto out; + dev->dev_flags |= DF_CONFIGURED; - se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); - if (!se_dev) { - pr_err("Unable to allocate memory for" - " struct se_subsystem_dev\n"); - ret = -ENOMEM; + /* + * XXX: there is not much point to have two different values here.. + */ + dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size; + dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth; + + /* + * Align max_hw_sectors down to PAGE_SIZE I/O transfers + */ + dev->dev_attrib.hw_max_sectors = + se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors, + dev->dev_attrib.hw_block_size); + + dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX); + dev->creation_time = get_jiffies_64(); + + ret = core_setup_alua(dev); + if (ret) goto out; - } - INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); - spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); - INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); - INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); - spin_lock_init(&se_dev->t10_pr.registration_lock); - spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); - INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); - spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); - spin_lock_init(&se_dev->se_dev_lock); - se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; - se_dev->t10_wwn.t10_sub_dev = se_dev; - se_dev->t10_alua.t10_sub_dev = se_dev; - se_dev->se_dev_attrib.da_sub_dev = se_dev; - se_dev->se_dev_hba = hba; - - se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); - if (!se_dev->se_dev_su_ptr) { - pr_err("Unable to locate subsystem dependent pointer" - " from allocate_virtdevice()\n"); + + /* + * Startup the struct se_device processing thread + */ + dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, + dev->transport->name); + if (!dev->tmr_wq) { + pr_err("Unable to create tmr workqueue for %s\n", + dev->transport->name); ret = -ENOMEM; - goto out; + goto out_free_alua; } - lun0_su_dev = se_dev; - memset(buf, 0, 16); - sprintf(buf, "rd_pages=8"); - t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); + /* + * Setup work_queue for QUEUE_FULL + */ + INIT_WORK(&dev->qf_work_queue, target_qf_do_work); - dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); - if (IS_ERR(dev)) { - ret = PTR_ERR(dev); - goto out; + /* + * Preload the initial INQUIRY const values if we are doing + * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI + * passthrough because this is being provided by the backend LLD. + */ + if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { + strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); + strncpy(&dev->t10_wwn.model[0], + dev->transport->inquiry_prod, 16); + strncpy(&dev->t10_wwn.revision[0], + dev->transport->inquiry_rev, 4); } - se_dev->se_dev_ptr = dev; - g_lun0_dev = dev; + + scsi_dump_inquiry(dev); + + spin_lock(&hba->device_lock); + hba->dev_count++; + spin_unlock(&hba->device_lock); + + mutex_lock(&g_device_mutex); + list_add_tail(&dev->g_dev_node, &g_device_list); + mutex_unlock(&g_device_mutex); return 0; + +out_free_alua: + core_alua_free_lu_gp_mem(dev); out: - lun0_su_dev = NULL; - kfree(se_dev); - if (lun0_hba) { - core_delete_hba(lun0_hba); - lun0_hba = NULL; + se_release_vpd_for_dev(dev); + return ret; +} + +void target_free_device(struct se_device *dev) +{ + struct se_hba *hba = dev->se_hba; + + WARN_ON(!list_empty(&dev->dev_sep_list)); + + if (dev->dev_flags & DF_CONFIGURED) { + destroy_workqueue(dev->tmr_wq); + + mutex_lock(&g_device_mutex); + list_del(&dev->g_dev_node); + mutex_unlock(&g_device_mutex); + + spin_lock(&hba->device_lock); + hba->dev_count--; + spin_unlock(&hba->device_lock); } + + core_alua_free_lu_gp_mem(dev); + core_alua_set_lba_map(dev, NULL, 0, 0); + core_scsi3_free_all_registrations(dev); + se_release_vpd_for_dev(dev); + + if (dev->transport->free_prot) + dev->transport->free_prot(dev); + + dev->transport->free_device(dev); +} + +int core_dev_setup_virtual_lun0(void) +{ + struct se_hba *hba; + struct se_device *dev; + char buf[] = "rd_pages=8,rd_nullio=1"; + int ret; + + hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE); + if (IS_ERR(hba)) + return PTR_ERR(hba); + + dev = target_alloc_device(hba, "virt_lun0"); + if (!dev) { + ret = -ENOMEM; + goto out_free_hba; + } + + hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf)); + + ret = target_configure_device(dev); + if (ret) + goto out_free_se_dev; + + lun0_hba = hba; + g_lun0_dev = dev; + return 0; + +out_free_se_dev: + target_free_device(dev); +out_free_hba: + core_delete_hba(hba); return ret; } @@ -1631,14 +1729,11 @@ out: void core_dev_release_virtual_lun0(void) { struct se_hba *hba = lun0_hba; - struct se_subsystem_dev *su_dev = lun0_su_dev; if (!hba) return; if (g_lun0_dev) - se_free_virtual_device(g_lun0_dev, hba); - - kfree(su_dev); + target_free_device(g_lun0_dev); core_delete_hba(hba); } |