1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_device.c (based on iscsi_target_device.c) 3c66ac9dbSNicholas Bellinger * 4e3d6f909SAndy Grover * This file contains the TCM Virtual Device and Disk Transport 5c66ac9dbSNicholas Bellinger * agnostic related functions. 6c66ac9dbSNicholas Bellinger * 7c66ac9dbSNicholas Bellinger * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc. 8c66ac9dbSNicholas Bellinger * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved. 9c66ac9dbSNicholas Bellinger * Copyright (c) 2007-2010 Rising Tide Systems 10c66ac9dbSNicholas Bellinger * Copyright (c) 2008-2010 Linux-iSCSI.org 11c66ac9dbSNicholas Bellinger * 12c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 13c66ac9dbSNicholas Bellinger * 14c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 15c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 16c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 17c66ac9dbSNicholas Bellinger * (at your option) any later version. 18c66ac9dbSNicholas Bellinger * 19c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 20c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 21c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 23c66ac9dbSNicholas Bellinger * 24c66ac9dbSNicholas Bellinger * You should have received a copy of the GNU General Public License 25c66ac9dbSNicholas Bellinger * along with this program; if not, write to the Free Software 26c66ac9dbSNicholas Bellinger * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 27c66ac9dbSNicholas Bellinger * 28c66ac9dbSNicholas Bellinger ******************************************************************************/ 29c66ac9dbSNicholas Bellinger 30c66ac9dbSNicholas Bellinger #include <linux/net.h> 31c66ac9dbSNicholas Bellinger #include <linux/string.h> 32c66ac9dbSNicholas Bellinger #include <linux/delay.h> 33c66ac9dbSNicholas Bellinger #include <linux/timer.h> 34c66ac9dbSNicholas Bellinger #include <linux/slab.h> 35c66ac9dbSNicholas Bellinger #include <linux/spinlock.h> 36c66ac9dbSNicholas Bellinger #include <linux/kthread.h> 37c66ac9dbSNicholas Bellinger #include <linux/in.h> 38c66ac9dbSNicholas Bellinger #include <net/sock.h> 39c66ac9dbSNicholas Bellinger #include <net/tcp.h> 40c66ac9dbSNicholas Bellinger #include <scsi/scsi.h> 411078da16SNicholas Bellinger #include <scsi/scsi_device.h> 42c66ac9dbSNicholas Bellinger 43c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 44c66ac9dbSNicholas Bellinger #include <target/target_core_device.h> 45c66ac9dbSNicholas Bellinger #include <target/target_core_tpg.h> 46c66ac9dbSNicholas Bellinger #include <target/target_core_transport.h> 47c66ac9dbSNicholas Bellinger #include <target/target_core_fabric_ops.h> 48c66ac9dbSNicholas Bellinger 49c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 50c66ac9dbSNicholas Bellinger #include "target_core_hba.h" 51c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 52c66ac9dbSNicholas Bellinger #include "target_core_ua.h" 53c66ac9dbSNicholas Bellinger 54c66ac9dbSNicholas Bellinger static void se_dev_start(struct se_device *dev); 55c66ac9dbSNicholas Bellinger static void se_dev_stop(struct se_device *dev); 56c66ac9dbSNicholas Bellinger 57e3d6f909SAndy Grover static struct se_hba *lun0_hba; 58e3d6f909SAndy Grover static struct se_subsystem_dev *lun0_su_dev; 59e3d6f909SAndy Grover /* not static, needed by tpg.c */ 60e3d6f909SAndy Grover struct se_device *g_lun0_dev; 61e3d6f909SAndy Grover 625951146dSAndy Grover int transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) 63c66ac9dbSNicholas Bellinger { 64c66ac9dbSNicholas Bellinger struct se_lun *se_lun = NULL; 65e3d6f909SAndy Grover struct se_session *se_sess = se_cmd->se_sess; 665951146dSAndy Grover struct se_device *dev; 67c66ac9dbSNicholas Bellinger unsigned long flags; 68c66ac9dbSNicholas Bellinger 69d8144955SFubo Chen if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { 70d8144955SFubo Chen se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; 71d8144955SFubo Chen se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 72e3d6f909SAndy Grover return -ENODEV; 73d8144955SFubo Chen } 74d8144955SFubo Chen 7578faae37SRoland Dreier spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); 765951146dSAndy Grover se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; 775951146dSAndy Grover if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { 785951146dSAndy Grover struct se_dev_entry *deve = se_cmd->se_deve; 795951146dSAndy Grover 80c66ac9dbSNicholas Bellinger deve->total_cmds++; 81c66ac9dbSNicholas Bellinger deve->total_bytes += se_cmd->data_length; 82c66ac9dbSNicholas Bellinger 835951146dSAndy Grover if ((se_cmd->data_direction == DMA_TO_DEVICE) && 845951146dSAndy Grover (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) { 85c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; 86c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 87c66ac9dbSNicholas Bellinger printk("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" 88c66ac9dbSNicholas Bellinger " Access for 0x%08x\n", 89e3d6f909SAndy Grover se_cmd->se_tfo->get_fabric_name(), 90c66ac9dbSNicholas Bellinger unpacked_lun); 9178faae37SRoland Dreier spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); 92e3d6f909SAndy Grover return -EACCES; 935951146dSAndy Grover } 945951146dSAndy Grover 955951146dSAndy Grover if (se_cmd->data_direction == DMA_TO_DEVICE) 965951146dSAndy Grover deve->write_bytes += se_cmd->data_length; 975951146dSAndy Grover else if (se_cmd->data_direction == DMA_FROM_DEVICE) 985951146dSAndy Grover deve->read_bytes += se_cmd->data_length; 995951146dSAndy Grover 1005951146dSAndy Grover deve->deve_cmds++; 1015951146dSAndy Grover 1025951146dSAndy Grover se_lun = deve->se_lun; 1035951146dSAndy Grover se_cmd->se_lun = deve->se_lun; 1045951146dSAndy Grover se_cmd->pr_res_key = deve->pr_res_key; 1055951146dSAndy Grover se_cmd->orig_fe_lun = unpacked_lun; 1065951146dSAndy Grover se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; 1075951146dSAndy Grover se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; 1085951146dSAndy Grover } 10978faae37SRoland Dreier spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); 1105951146dSAndy Grover 1115951146dSAndy Grover if (!se_lun) { 112c66ac9dbSNicholas Bellinger /* 113c66ac9dbSNicholas Bellinger * Use the se_portal_group->tpg_virt_lun0 to allow for 114c66ac9dbSNicholas Bellinger * REPORT_LUNS, et al to be returned when no active 115c66ac9dbSNicholas Bellinger * MappedLUN=0 exists for this Initiator Port. 116c66ac9dbSNicholas Bellinger */ 117c66ac9dbSNicholas Bellinger if (unpacked_lun != 0) { 118c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; 119c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 120c66ac9dbSNicholas Bellinger printk("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" 121c66ac9dbSNicholas Bellinger " Access for 0x%08x\n", 122e3d6f909SAndy Grover se_cmd->se_tfo->get_fabric_name(), 123c66ac9dbSNicholas Bellinger unpacked_lun); 124e3d6f909SAndy Grover return -ENODEV; 125c66ac9dbSNicholas Bellinger } 126c66ac9dbSNicholas Bellinger /* 127c66ac9dbSNicholas Bellinger * Force WRITE PROTECT for virtual LUN 0 128c66ac9dbSNicholas Bellinger */ 129c66ac9dbSNicholas Bellinger if ((se_cmd->data_direction != DMA_FROM_DEVICE) && 130c66ac9dbSNicholas Bellinger (se_cmd->data_direction != DMA_NONE)) { 131c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; 132c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 133e3d6f909SAndy Grover return -EACCES; 134c66ac9dbSNicholas Bellinger } 1355951146dSAndy Grover 1365951146dSAndy Grover se_lun = &se_sess->se_tpg->tpg_virt_lun0; 1375951146dSAndy Grover se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; 138c66ac9dbSNicholas Bellinger se_cmd->orig_fe_lun = 0; 139e3d6f909SAndy Grover se_cmd->se_orig_obj_ptr = se_cmd->se_lun->lun_se_dev; 140c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; 141c66ac9dbSNicholas Bellinger } 142c66ac9dbSNicholas Bellinger /* 143c66ac9dbSNicholas Bellinger * Determine if the struct se_lun is online. 1445951146dSAndy Grover * FIXME: Check for LUN_RESET + UNIT Attention 145c66ac9dbSNicholas Bellinger */ 146c66ac9dbSNicholas Bellinger if (se_dev_check_online(se_lun->lun_se_dev) != 0) { 147c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; 148c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 149e3d6f909SAndy Grover return -ENODEV; 150c66ac9dbSNicholas Bellinger } 151c66ac9dbSNicholas Bellinger 1525951146dSAndy Grover /* Directly associate cmd with se_dev */ 1535951146dSAndy Grover se_cmd->se_dev = se_lun->lun_se_dev; 1545951146dSAndy Grover 1555951146dSAndy Grover /* TODO: get rid of this and use atomics for stats */ 1565951146dSAndy Grover dev = se_lun->lun_se_dev; 15778faae37SRoland Dreier spin_lock_irqsave(&dev->stats_lock, flags); 158c66ac9dbSNicholas Bellinger dev->num_cmds++; 159c66ac9dbSNicholas Bellinger if (se_cmd->data_direction == DMA_TO_DEVICE) 160c66ac9dbSNicholas Bellinger dev->write_bytes += se_cmd->data_length; 161c66ac9dbSNicholas Bellinger else if (se_cmd->data_direction == DMA_FROM_DEVICE) 162c66ac9dbSNicholas Bellinger dev->read_bytes += se_cmd->data_length; 16378faae37SRoland Dreier spin_unlock_irqrestore(&dev->stats_lock, flags); 164c66ac9dbSNicholas Bellinger 165c66ac9dbSNicholas Bellinger /* 166c66ac9dbSNicholas Bellinger * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used 167c66ac9dbSNicholas Bellinger * for tracking state of struct se_cmds during LUN shutdown events. 168c66ac9dbSNicholas Bellinger */ 169c66ac9dbSNicholas Bellinger spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); 1705951146dSAndy Grover list_add_tail(&se_cmd->se_lun_node, &se_lun->lun_cmd_list); 171a1d8b49aSAndy Grover atomic_set(&se_cmd->transport_lun_active, 1); 172c66ac9dbSNicholas Bellinger spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); 173c66ac9dbSNicholas Bellinger 174c66ac9dbSNicholas Bellinger return 0; 175c66ac9dbSNicholas Bellinger } 1765951146dSAndy Grover EXPORT_SYMBOL(transport_lookup_cmd_lun); 177c66ac9dbSNicholas Bellinger 1785951146dSAndy Grover int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun) 179c66ac9dbSNicholas Bellinger { 180c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 181c66ac9dbSNicholas Bellinger struct se_lun *se_lun = NULL; 182e3d6f909SAndy Grover struct se_session *se_sess = se_cmd->se_sess; 183c66ac9dbSNicholas Bellinger struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 1845e1be919SRoland Dreier unsigned long flags; 185c66ac9dbSNicholas Bellinger 186d8144955SFubo Chen if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { 187d8144955SFubo Chen se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; 188d8144955SFubo Chen se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 189e3d6f909SAndy Grover return -ENODEV; 190d8144955SFubo Chen } 191d8144955SFubo Chen 1925e1be919SRoland Dreier spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags); 1935951146dSAndy Grover se_cmd->se_deve = &se_sess->se_node_acl->device_list[unpacked_lun]; 1945951146dSAndy Grover deve = se_cmd->se_deve; 1955951146dSAndy Grover 196c66ac9dbSNicholas Bellinger if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { 1975951146dSAndy Grover se_tmr->tmr_lun = deve->se_lun; 1985951146dSAndy Grover se_cmd->se_lun = deve->se_lun; 1995951146dSAndy Grover se_lun = deve->se_lun; 200c66ac9dbSNicholas Bellinger se_cmd->pr_res_key = deve->pr_res_key; 201c66ac9dbSNicholas Bellinger se_cmd->orig_fe_lun = unpacked_lun; 2025951146dSAndy Grover se_cmd->se_orig_obj_ptr = se_cmd->se_dev; 203c66ac9dbSNicholas Bellinger } 2045e1be919SRoland Dreier spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags); 205c66ac9dbSNicholas Bellinger 206c66ac9dbSNicholas Bellinger if (!se_lun) { 207c66ac9dbSNicholas Bellinger printk(KERN_INFO "TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" 208c66ac9dbSNicholas Bellinger " Access for 0x%08x\n", 209e3d6f909SAndy Grover se_cmd->se_tfo->get_fabric_name(), 210c66ac9dbSNicholas Bellinger unpacked_lun); 211c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 212e3d6f909SAndy Grover return -ENODEV; 213c66ac9dbSNicholas Bellinger } 214c66ac9dbSNicholas Bellinger /* 215c66ac9dbSNicholas Bellinger * Determine if the struct se_lun is online. 2165951146dSAndy Grover * FIXME: Check for LUN_RESET + UNIT Attention 217c66ac9dbSNicholas Bellinger */ 218c66ac9dbSNicholas Bellinger if (se_dev_check_online(se_lun->lun_se_dev) != 0) { 219c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 220e3d6f909SAndy Grover return -ENODEV; 221c66ac9dbSNicholas Bellinger } 222c66ac9dbSNicholas Bellinger 2235951146dSAndy Grover /* Directly associate cmd with se_dev */ 2245951146dSAndy Grover se_cmd->se_dev = se_lun->lun_se_dev; 2255951146dSAndy Grover se_tmr->tmr_dev = se_lun->lun_se_dev; 2265951146dSAndy Grover 2275e1be919SRoland Dreier spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags); 2285951146dSAndy Grover list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list); 2295e1be919SRoland Dreier spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags); 230c66ac9dbSNicholas Bellinger 231c66ac9dbSNicholas Bellinger return 0; 232c66ac9dbSNicholas Bellinger } 2335951146dSAndy Grover EXPORT_SYMBOL(transport_lookup_tmr_lun); 234c66ac9dbSNicholas Bellinger 235c66ac9dbSNicholas Bellinger /* 236c66ac9dbSNicholas Bellinger * This function is called from core_scsi3_emulate_pro_register_and_move() 237c66ac9dbSNicholas Bellinger * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count 238c66ac9dbSNicholas Bellinger * when a matching rtpi is found. 239c66ac9dbSNicholas Bellinger */ 240c66ac9dbSNicholas Bellinger struct se_dev_entry *core_get_se_deve_from_rtpi( 241c66ac9dbSNicholas Bellinger struct se_node_acl *nacl, 242c66ac9dbSNicholas Bellinger u16 rtpi) 243c66ac9dbSNicholas Bellinger { 244c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 245c66ac9dbSNicholas Bellinger struct se_lun *lun; 246c66ac9dbSNicholas Bellinger struct se_port *port; 247c66ac9dbSNicholas Bellinger struct se_portal_group *tpg = nacl->se_tpg; 248c66ac9dbSNicholas Bellinger u32 i; 249c66ac9dbSNicholas Bellinger 250c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 251c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 252c66ac9dbSNicholas Bellinger deve = &nacl->device_list[i]; 253c66ac9dbSNicholas Bellinger 254c66ac9dbSNicholas Bellinger if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 255c66ac9dbSNicholas Bellinger continue; 256c66ac9dbSNicholas Bellinger 257c66ac9dbSNicholas Bellinger lun = deve->se_lun; 258c66ac9dbSNicholas Bellinger if (!(lun)) { 259c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s device entries device pointer is" 260c66ac9dbSNicholas Bellinger " NULL, but Initiator has access.\n", 261e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name()); 262c66ac9dbSNicholas Bellinger continue; 263c66ac9dbSNicholas Bellinger } 264c66ac9dbSNicholas Bellinger port = lun->lun_sep; 265c66ac9dbSNicholas Bellinger if (!(port)) { 266c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s device entries device pointer is" 267c66ac9dbSNicholas Bellinger " NULL, but Initiator has access.\n", 268e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name()); 269c66ac9dbSNicholas Bellinger continue; 270c66ac9dbSNicholas Bellinger } 271c66ac9dbSNicholas Bellinger if (port->sep_rtpi != rtpi) 272c66ac9dbSNicholas Bellinger continue; 273c66ac9dbSNicholas Bellinger 274c66ac9dbSNicholas Bellinger atomic_inc(&deve->pr_ref_count); 275c66ac9dbSNicholas Bellinger smp_mb__after_atomic_inc(); 276c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 277c66ac9dbSNicholas Bellinger 278c66ac9dbSNicholas Bellinger return deve; 279c66ac9dbSNicholas Bellinger } 280c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 281c66ac9dbSNicholas Bellinger 282c66ac9dbSNicholas Bellinger return NULL; 283c66ac9dbSNicholas Bellinger } 284c66ac9dbSNicholas Bellinger 285c66ac9dbSNicholas Bellinger int core_free_device_list_for_node( 286c66ac9dbSNicholas Bellinger struct se_node_acl *nacl, 287c66ac9dbSNicholas Bellinger struct se_portal_group *tpg) 288c66ac9dbSNicholas Bellinger { 289c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 290c66ac9dbSNicholas Bellinger struct se_lun *lun; 291c66ac9dbSNicholas Bellinger u32 i; 292c66ac9dbSNicholas Bellinger 293c66ac9dbSNicholas Bellinger if (!nacl->device_list) 294c66ac9dbSNicholas Bellinger return 0; 295c66ac9dbSNicholas Bellinger 296c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 297c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 298c66ac9dbSNicholas Bellinger deve = &nacl->device_list[i]; 299c66ac9dbSNicholas Bellinger 300c66ac9dbSNicholas Bellinger if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 301c66ac9dbSNicholas Bellinger continue; 302c66ac9dbSNicholas Bellinger 303c66ac9dbSNicholas Bellinger if (!deve->se_lun) { 304c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s device entries device pointer is" 305c66ac9dbSNicholas Bellinger " NULL, but Initiator has access.\n", 306e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name()); 307c66ac9dbSNicholas Bellinger continue; 308c66ac9dbSNicholas Bellinger } 309c66ac9dbSNicholas Bellinger lun = deve->se_lun; 310c66ac9dbSNicholas Bellinger 311c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 312c66ac9dbSNicholas Bellinger core_update_device_list_for_node(lun, NULL, deve->mapped_lun, 313c66ac9dbSNicholas Bellinger TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); 314c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 315c66ac9dbSNicholas Bellinger } 316c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 317c66ac9dbSNicholas Bellinger 318c66ac9dbSNicholas Bellinger kfree(nacl->device_list); 319c66ac9dbSNicholas Bellinger nacl->device_list = NULL; 320c66ac9dbSNicholas Bellinger 321c66ac9dbSNicholas Bellinger return 0; 322c66ac9dbSNicholas Bellinger } 323c66ac9dbSNicholas Bellinger 324c66ac9dbSNicholas Bellinger void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) 325c66ac9dbSNicholas Bellinger { 326c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 327c66ac9dbSNicholas Bellinger 328c66ac9dbSNicholas Bellinger spin_lock_irq(&se_nacl->device_list_lock); 329c66ac9dbSNicholas Bellinger deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; 330c66ac9dbSNicholas Bellinger deve->deve_cmds--; 331c66ac9dbSNicholas Bellinger spin_unlock_irq(&se_nacl->device_list_lock); 332c66ac9dbSNicholas Bellinger } 333c66ac9dbSNicholas Bellinger 334c66ac9dbSNicholas Bellinger void core_update_device_list_access( 335c66ac9dbSNicholas Bellinger u32 mapped_lun, 336c66ac9dbSNicholas Bellinger u32 lun_access, 337c66ac9dbSNicholas Bellinger struct se_node_acl *nacl) 338c66ac9dbSNicholas Bellinger { 339c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 340c66ac9dbSNicholas Bellinger 341c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 342c66ac9dbSNicholas Bellinger deve = &nacl->device_list[mapped_lun]; 343c66ac9dbSNicholas Bellinger if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { 344c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; 345c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; 346c66ac9dbSNicholas Bellinger } else { 347c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; 348c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; 349c66ac9dbSNicholas Bellinger } 350c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 351c66ac9dbSNicholas Bellinger } 352c66ac9dbSNicholas Bellinger 353c66ac9dbSNicholas Bellinger /* core_update_device_list_for_node(): 354c66ac9dbSNicholas Bellinger * 355c66ac9dbSNicholas Bellinger * 356c66ac9dbSNicholas Bellinger */ 357c66ac9dbSNicholas Bellinger int core_update_device_list_for_node( 358c66ac9dbSNicholas Bellinger struct se_lun *lun, 359c66ac9dbSNicholas Bellinger struct se_lun_acl *lun_acl, 360c66ac9dbSNicholas Bellinger u32 mapped_lun, 361c66ac9dbSNicholas Bellinger u32 lun_access, 362c66ac9dbSNicholas Bellinger struct se_node_acl *nacl, 363c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 364c66ac9dbSNicholas Bellinger int enable) 365c66ac9dbSNicholas Bellinger { 366c66ac9dbSNicholas Bellinger struct se_port *port = lun->lun_sep; 367c66ac9dbSNicholas Bellinger struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; 368c66ac9dbSNicholas Bellinger int trans = 0; 369c66ac9dbSNicholas Bellinger /* 370c66ac9dbSNicholas Bellinger * If the MappedLUN entry is being disabled, the entry in 371c66ac9dbSNicholas Bellinger * port->sep_alua_list must be removed now before clearing the 372c66ac9dbSNicholas Bellinger * struct se_dev_entry pointers below as logic in 373c66ac9dbSNicholas Bellinger * core_alua_do_transition_tg_pt() depends on these being present. 374c66ac9dbSNicholas Bellinger */ 375c66ac9dbSNicholas Bellinger if (!(enable)) { 376c66ac9dbSNicholas Bellinger /* 377c66ac9dbSNicholas Bellinger * deve->se_lun_acl will be NULL for demo-mode created LUNs 37825985edcSLucas De Marchi * that have not been explicitly concerted to MappedLUNs -> 37929fe609dSNicholas Bellinger * struct se_lun_acl, but we remove deve->alua_port_list from 38029fe609dSNicholas Bellinger * port->sep_alua_list. This also means that active UAs and 38129fe609dSNicholas Bellinger * NodeACL context specific PR metadata for demo-mode 38229fe609dSNicholas Bellinger * MappedLUN *deve will be released below.. 383c66ac9dbSNicholas Bellinger */ 384c66ac9dbSNicholas Bellinger spin_lock_bh(&port->sep_alua_lock); 385c66ac9dbSNicholas Bellinger list_del(&deve->alua_port_list); 386c66ac9dbSNicholas Bellinger spin_unlock_bh(&port->sep_alua_lock); 387c66ac9dbSNicholas Bellinger } 388c66ac9dbSNicholas Bellinger 389c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 390c66ac9dbSNicholas Bellinger if (enable) { 391c66ac9dbSNicholas Bellinger /* 392c66ac9dbSNicholas Bellinger * Check if the call is handling demo mode -> explict LUN ACL 393c66ac9dbSNicholas Bellinger * transition. This transition must be for the same struct se_lun 394c66ac9dbSNicholas Bellinger * + mapped_lun that was setup in demo mode.. 395c66ac9dbSNicholas Bellinger */ 396c66ac9dbSNicholas Bellinger if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { 397c66ac9dbSNicholas Bellinger if (deve->se_lun_acl != NULL) { 398c66ac9dbSNicholas Bellinger printk(KERN_ERR "struct se_dev_entry->se_lun_acl" 399c66ac9dbSNicholas Bellinger " already set for demo mode -> explict" 400c66ac9dbSNicholas Bellinger " LUN ACL transition\n"); 40185dc98d9SFubo Chen spin_unlock_irq(&nacl->device_list_lock); 402e3d6f909SAndy Grover return -EINVAL; 403c66ac9dbSNicholas Bellinger } 404c66ac9dbSNicholas Bellinger if (deve->se_lun != lun) { 405c66ac9dbSNicholas Bellinger printk(KERN_ERR "struct se_dev_entry->se_lun does" 406c66ac9dbSNicholas Bellinger " match passed struct se_lun for demo mode" 407c66ac9dbSNicholas Bellinger " -> explict LUN ACL transition\n"); 40885dc98d9SFubo Chen spin_unlock_irq(&nacl->device_list_lock); 409e3d6f909SAndy Grover return -EINVAL; 410c66ac9dbSNicholas Bellinger } 411c66ac9dbSNicholas Bellinger deve->se_lun_acl = lun_acl; 412c66ac9dbSNicholas Bellinger trans = 1; 413c66ac9dbSNicholas Bellinger } else { 414c66ac9dbSNicholas Bellinger deve->se_lun = lun; 415c66ac9dbSNicholas Bellinger deve->se_lun_acl = lun_acl; 416c66ac9dbSNicholas Bellinger deve->mapped_lun = mapped_lun; 417c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; 418c66ac9dbSNicholas Bellinger } 419c66ac9dbSNicholas Bellinger 420c66ac9dbSNicholas Bellinger if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { 421c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; 422c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; 423c66ac9dbSNicholas Bellinger } else { 424c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; 425c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; 426c66ac9dbSNicholas Bellinger } 427c66ac9dbSNicholas Bellinger 428c66ac9dbSNicholas Bellinger if (trans) { 429c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 430c66ac9dbSNicholas Bellinger return 0; 431c66ac9dbSNicholas Bellinger } 432c66ac9dbSNicholas Bellinger deve->creation_time = get_jiffies_64(); 433c66ac9dbSNicholas Bellinger deve->attach_count++; 434c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 435c66ac9dbSNicholas Bellinger 436c66ac9dbSNicholas Bellinger spin_lock_bh(&port->sep_alua_lock); 437c66ac9dbSNicholas Bellinger list_add_tail(&deve->alua_port_list, &port->sep_alua_list); 438c66ac9dbSNicholas Bellinger spin_unlock_bh(&port->sep_alua_lock); 439c66ac9dbSNicholas Bellinger 440c66ac9dbSNicholas Bellinger return 0; 441c66ac9dbSNicholas Bellinger } 442c66ac9dbSNicholas Bellinger /* 443c66ac9dbSNicholas Bellinger * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE 444c66ac9dbSNicholas Bellinger * PR operation to complete. 445c66ac9dbSNicholas Bellinger */ 446c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 447c66ac9dbSNicholas Bellinger while (atomic_read(&deve->pr_ref_count) != 0) 448c66ac9dbSNicholas Bellinger cpu_relax(); 449c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 450c66ac9dbSNicholas Bellinger /* 451c66ac9dbSNicholas Bellinger * Disable struct se_dev_entry LUN ACL mapping 452c66ac9dbSNicholas Bellinger */ 453c66ac9dbSNicholas Bellinger core_scsi3_ua_release_all(deve); 454c66ac9dbSNicholas Bellinger deve->se_lun = NULL; 455c66ac9dbSNicholas Bellinger deve->se_lun_acl = NULL; 456c66ac9dbSNicholas Bellinger deve->lun_flags = 0; 457c66ac9dbSNicholas Bellinger deve->creation_time = 0; 458c66ac9dbSNicholas Bellinger deve->attach_count--; 459c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 460c66ac9dbSNicholas Bellinger 461c66ac9dbSNicholas Bellinger core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); 462c66ac9dbSNicholas Bellinger return 0; 463c66ac9dbSNicholas Bellinger } 464c66ac9dbSNicholas Bellinger 465c66ac9dbSNicholas Bellinger /* core_clear_lun_from_tpg(): 466c66ac9dbSNicholas Bellinger * 467c66ac9dbSNicholas Bellinger * 468c66ac9dbSNicholas Bellinger */ 469c66ac9dbSNicholas Bellinger void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) 470c66ac9dbSNicholas Bellinger { 471c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 472c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 473c66ac9dbSNicholas Bellinger u32 i; 474c66ac9dbSNicholas Bellinger 475c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 476c66ac9dbSNicholas Bellinger list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { 477c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 478c66ac9dbSNicholas Bellinger 479c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 480c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 481c66ac9dbSNicholas Bellinger deve = &nacl->device_list[i]; 482c66ac9dbSNicholas Bellinger if (lun != deve->se_lun) 483c66ac9dbSNicholas Bellinger continue; 484c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 485c66ac9dbSNicholas Bellinger 486c66ac9dbSNicholas Bellinger core_update_device_list_for_node(lun, NULL, 487c66ac9dbSNicholas Bellinger deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, 488c66ac9dbSNicholas Bellinger nacl, tpg, 0); 489c66ac9dbSNicholas Bellinger 490c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 491c66ac9dbSNicholas Bellinger } 492c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 493c66ac9dbSNicholas Bellinger 494c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 495c66ac9dbSNicholas Bellinger } 496c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 497c66ac9dbSNicholas Bellinger } 498c66ac9dbSNicholas Bellinger 499c66ac9dbSNicholas Bellinger static struct se_port *core_alloc_port(struct se_device *dev) 500c66ac9dbSNicholas Bellinger { 501c66ac9dbSNicholas Bellinger struct se_port *port, *port_tmp; 502c66ac9dbSNicholas Bellinger 503c66ac9dbSNicholas Bellinger port = kzalloc(sizeof(struct se_port), GFP_KERNEL); 504c66ac9dbSNicholas Bellinger if (!(port)) { 505c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate struct se_port\n"); 506e3d6f909SAndy Grover return ERR_PTR(-ENOMEM); 507c66ac9dbSNicholas Bellinger } 508c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&port->sep_alua_list); 509c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&port->sep_list); 510c66ac9dbSNicholas Bellinger atomic_set(&port->sep_tg_pt_secondary_offline, 0); 511c66ac9dbSNicholas Bellinger spin_lock_init(&port->sep_alua_lock); 512c66ac9dbSNicholas Bellinger mutex_init(&port->sep_tg_pt_md_mutex); 513c66ac9dbSNicholas Bellinger 514c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 515c66ac9dbSNicholas Bellinger if (dev->dev_port_count == 0x0000ffff) { 516c66ac9dbSNicholas Bellinger printk(KERN_WARNING "Reached dev->dev_port_count ==" 517c66ac9dbSNicholas Bellinger " 0x0000ffff\n"); 518c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 519e3d6f909SAndy Grover return ERR_PTR(-ENOSPC); 520c66ac9dbSNicholas Bellinger } 521c66ac9dbSNicholas Bellinger again: 522c66ac9dbSNicholas Bellinger /* 523c66ac9dbSNicholas Bellinger * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device 524c66ac9dbSNicholas Bellinger * Here is the table from spc4r17 section 7.7.3.8. 525c66ac9dbSNicholas Bellinger * 526c66ac9dbSNicholas Bellinger * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field 527c66ac9dbSNicholas Bellinger * 528c66ac9dbSNicholas Bellinger * Code Description 529c66ac9dbSNicholas Bellinger * 0h Reserved 530c66ac9dbSNicholas Bellinger * 1h Relative port 1, historically known as port A 531c66ac9dbSNicholas Bellinger * 2h Relative port 2, historically known as port B 532c66ac9dbSNicholas Bellinger * 3h to FFFFh Relative port 3 through 65 535 533c66ac9dbSNicholas Bellinger */ 534c66ac9dbSNicholas Bellinger port->sep_rtpi = dev->dev_rpti_counter++; 535c66ac9dbSNicholas Bellinger if (!(port->sep_rtpi)) 536c66ac9dbSNicholas Bellinger goto again; 537c66ac9dbSNicholas Bellinger 538c66ac9dbSNicholas Bellinger list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { 539c66ac9dbSNicholas Bellinger /* 540c66ac9dbSNicholas Bellinger * Make sure RELATIVE TARGET PORT IDENTIFER is unique 541c66ac9dbSNicholas Bellinger * for 16-bit wrap.. 542c66ac9dbSNicholas Bellinger */ 543c66ac9dbSNicholas Bellinger if (port->sep_rtpi == port_tmp->sep_rtpi) 544c66ac9dbSNicholas Bellinger goto again; 545c66ac9dbSNicholas Bellinger } 546c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 547c66ac9dbSNicholas Bellinger 548c66ac9dbSNicholas Bellinger return port; 549c66ac9dbSNicholas Bellinger } 550c66ac9dbSNicholas Bellinger 551c66ac9dbSNicholas Bellinger static void core_export_port( 552c66ac9dbSNicholas Bellinger struct se_device *dev, 553c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 554c66ac9dbSNicholas Bellinger struct se_port *port, 555c66ac9dbSNicholas Bellinger struct se_lun *lun) 556c66ac9dbSNicholas Bellinger { 557e3d6f909SAndy Grover struct se_subsystem_dev *su_dev = dev->se_sub_dev; 558c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; 559c66ac9dbSNicholas Bellinger 560c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 561c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_sep_lock); 562c66ac9dbSNicholas Bellinger port->sep_tpg = tpg; 563c66ac9dbSNicholas Bellinger port->sep_lun = lun; 564c66ac9dbSNicholas Bellinger lun->lun_sep = port; 565c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 566c66ac9dbSNicholas Bellinger 567c66ac9dbSNicholas Bellinger list_add_tail(&port->sep_list, &dev->dev_sep_list); 568c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 569c66ac9dbSNicholas Bellinger 570e3d6f909SAndy Grover if (su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { 571c66ac9dbSNicholas Bellinger tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); 572c66ac9dbSNicholas Bellinger if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { 573c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate t10_alua_tg_pt" 574c66ac9dbSNicholas Bellinger "_gp_member_t\n"); 575c66ac9dbSNicholas Bellinger return; 576c66ac9dbSNicholas Bellinger } 577c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 578c66ac9dbSNicholas Bellinger __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, 579e3d6f909SAndy Grover su_dev->t10_alua.default_tg_pt_gp); 580c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 581c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s/%s: Adding to default ALUA Target Port" 582c66ac9dbSNicholas Bellinger " Group: alua/default_tg_pt_gp\n", 583e3d6f909SAndy Grover dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); 584c66ac9dbSNicholas Bellinger } 585c66ac9dbSNicholas Bellinger 586c66ac9dbSNicholas Bellinger dev->dev_port_count++; 587c66ac9dbSNicholas Bellinger port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ 588c66ac9dbSNicholas Bellinger } 589c66ac9dbSNicholas Bellinger 590c66ac9dbSNicholas Bellinger /* 591c66ac9dbSNicholas Bellinger * Called with struct se_device->se_port_lock spinlock held. 592c66ac9dbSNicholas Bellinger */ 593c66ac9dbSNicholas Bellinger static void core_release_port(struct se_device *dev, struct se_port *port) 5945dd7ed2eSDan Carpenter __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) 595c66ac9dbSNicholas Bellinger { 596c66ac9dbSNicholas Bellinger /* 597c66ac9dbSNicholas Bellinger * Wait for any port reference for PR ALL_TG_PT=1 operation 598c66ac9dbSNicholas Bellinger * to complete in __core_scsi3_alloc_registration() 599c66ac9dbSNicholas Bellinger */ 600c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 601c66ac9dbSNicholas Bellinger if (atomic_read(&port->sep_tg_pt_ref_cnt)) 602c66ac9dbSNicholas Bellinger cpu_relax(); 603c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 604c66ac9dbSNicholas Bellinger 605c66ac9dbSNicholas Bellinger core_alua_free_tg_pt_gp_mem(port); 606c66ac9dbSNicholas Bellinger 607c66ac9dbSNicholas Bellinger list_del(&port->sep_list); 608c66ac9dbSNicholas Bellinger dev->dev_port_count--; 609c66ac9dbSNicholas Bellinger kfree(port); 610c66ac9dbSNicholas Bellinger } 611c66ac9dbSNicholas Bellinger 612c66ac9dbSNicholas Bellinger int core_dev_export( 613c66ac9dbSNicholas Bellinger struct se_device *dev, 614c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 615c66ac9dbSNicholas Bellinger struct se_lun *lun) 616c66ac9dbSNicholas Bellinger { 617c66ac9dbSNicholas Bellinger struct se_port *port; 618c66ac9dbSNicholas Bellinger 619c66ac9dbSNicholas Bellinger port = core_alloc_port(dev); 620e3d6f909SAndy Grover if (IS_ERR(port)) 621e3d6f909SAndy Grover return PTR_ERR(port); 622c66ac9dbSNicholas Bellinger 623c66ac9dbSNicholas Bellinger lun->lun_se_dev = dev; 624c66ac9dbSNicholas Bellinger se_dev_start(dev); 625c66ac9dbSNicholas Bellinger 626c66ac9dbSNicholas Bellinger atomic_inc(&dev->dev_export_obj.obj_access_count); 627c66ac9dbSNicholas Bellinger core_export_port(dev, tpg, port, lun); 628c66ac9dbSNicholas Bellinger return 0; 629c66ac9dbSNicholas Bellinger } 630c66ac9dbSNicholas Bellinger 631c66ac9dbSNicholas Bellinger void core_dev_unexport( 632c66ac9dbSNicholas Bellinger struct se_device *dev, 633c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 634c66ac9dbSNicholas Bellinger struct se_lun *lun) 635c66ac9dbSNicholas Bellinger { 636c66ac9dbSNicholas Bellinger struct se_port *port = lun->lun_sep; 637c66ac9dbSNicholas Bellinger 638c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_sep_lock); 639c66ac9dbSNicholas Bellinger if (lun->lun_se_dev == NULL) { 640c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 641c66ac9dbSNicholas Bellinger return; 642c66ac9dbSNicholas Bellinger } 643c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 644c66ac9dbSNicholas Bellinger 645c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 646c66ac9dbSNicholas Bellinger atomic_dec(&dev->dev_export_obj.obj_access_count); 647c66ac9dbSNicholas Bellinger core_release_port(dev, port); 648c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 649c66ac9dbSNicholas Bellinger 650c66ac9dbSNicholas Bellinger se_dev_stop(dev); 651c66ac9dbSNicholas Bellinger lun->lun_se_dev = NULL; 652c66ac9dbSNicholas Bellinger } 653c66ac9dbSNicholas Bellinger 654c66ac9dbSNicholas Bellinger int transport_core_report_lun_response(struct se_cmd *se_cmd) 655c66ac9dbSNicholas Bellinger { 656c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 657c66ac9dbSNicholas Bellinger struct se_lun *se_lun; 658e3d6f909SAndy Grover struct se_session *se_sess = se_cmd->se_sess; 659c66ac9dbSNicholas Bellinger struct se_task *se_task; 660a1d8b49aSAndy Grover unsigned char *buf = se_cmd->t_task_buf; 6611078da16SNicholas Bellinger u32 cdb_offset = 0, lun_count = 0, offset = 8, i; 662c66ac9dbSNicholas Bellinger 663a1d8b49aSAndy Grover list_for_each_entry(se_task, &se_cmd->t_task_list, t_list) 664c66ac9dbSNicholas Bellinger break; 665c66ac9dbSNicholas Bellinger 666c66ac9dbSNicholas Bellinger if (!(se_task)) { 667c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to locate struct se_task for struct se_cmd\n"); 668c66ac9dbSNicholas Bellinger return PYX_TRANSPORT_LU_COMM_FAILURE; 669c66ac9dbSNicholas Bellinger } 670c66ac9dbSNicholas Bellinger 671c66ac9dbSNicholas Bellinger /* 672c66ac9dbSNicholas Bellinger * If no struct se_session pointer is present, this struct se_cmd is 673c66ac9dbSNicholas Bellinger * coming via a target_core_mod PASSTHROUGH op, and not through 674c66ac9dbSNicholas Bellinger * a $FABRIC_MOD. In that case, report LUN=0 only. 675c66ac9dbSNicholas Bellinger */ 676c66ac9dbSNicholas Bellinger if (!(se_sess)) { 6771078da16SNicholas Bellinger int_to_scsilun(0, (struct scsi_lun *)&buf[offset]); 678c66ac9dbSNicholas Bellinger lun_count = 1; 679c66ac9dbSNicholas Bellinger goto done; 680c66ac9dbSNicholas Bellinger } 681c66ac9dbSNicholas Bellinger 682e3d6f909SAndy Grover spin_lock_irq(&se_sess->se_node_acl->device_list_lock); 683c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 684e3d6f909SAndy Grover deve = &se_sess->se_node_acl->device_list[i]; 685c66ac9dbSNicholas Bellinger if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 686c66ac9dbSNicholas Bellinger continue; 687c66ac9dbSNicholas Bellinger se_lun = deve->se_lun; 688c66ac9dbSNicholas Bellinger /* 689c66ac9dbSNicholas Bellinger * We determine the correct LUN LIST LENGTH even once we 690c66ac9dbSNicholas Bellinger * have reached the initial allocation length. 691c66ac9dbSNicholas Bellinger * See SPC2-R20 7.19. 692c66ac9dbSNicholas Bellinger */ 693c66ac9dbSNicholas Bellinger lun_count++; 694c66ac9dbSNicholas Bellinger if ((cdb_offset + 8) >= se_cmd->data_length) 695c66ac9dbSNicholas Bellinger continue; 696c66ac9dbSNicholas Bellinger 6971078da16SNicholas Bellinger int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]); 6981078da16SNicholas Bellinger offset += 8; 699c66ac9dbSNicholas Bellinger cdb_offset += 8; 700c66ac9dbSNicholas Bellinger } 701e3d6f909SAndy Grover spin_unlock_irq(&se_sess->se_node_acl->device_list_lock); 702c66ac9dbSNicholas Bellinger 703c66ac9dbSNicholas Bellinger /* 704c66ac9dbSNicholas Bellinger * See SPC3 r07, page 159. 705c66ac9dbSNicholas Bellinger */ 706c66ac9dbSNicholas Bellinger done: 707c66ac9dbSNicholas Bellinger lun_count *= 8; 708c66ac9dbSNicholas Bellinger buf[0] = ((lun_count >> 24) & 0xff); 709c66ac9dbSNicholas Bellinger buf[1] = ((lun_count >> 16) & 0xff); 710c66ac9dbSNicholas Bellinger buf[2] = ((lun_count >> 8) & 0xff); 711c66ac9dbSNicholas Bellinger buf[3] = (lun_count & 0xff); 712c66ac9dbSNicholas Bellinger 713c66ac9dbSNicholas Bellinger return PYX_TRANSPORT_SENT_TO_TRANSPORT; 714c66ac9dbSNicholas Bellinger } 715c66ac9dbSNicholas Bellinger 716c66ac9dbSNicholas Bellinger /* se_release_device_for_hba(): 717c66ac9dbSNicholas Bellinger * 718c66ac9dbSNicholas Bellinger * 719c66ac9dbSNicholas Bellinger */ 720c66ac9dbSNicholas Bellinger void se_release_device_for_hba(struct se_device *dev) 721c66ac9dbSNicholas Bellinger { 722c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 723c66ac9dbSNicholas Bellinger 724c66ac9dbSNicholas Bellinger if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || 725c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || 726c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || 727c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || 728c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) 729c66ac9dbSNicholas Bellinger se_dev_stop(dev); 730c66ac9dbSNicholas Bellinger 731c66ac9dbSNicholas Bellinger if (dev->dev_ptr) { 732c66ac9dbSNicholas Bellinger kthread_stop(dev->process_thread); 733c66ac9dbSNicholas Bellinger if (dev->transport->free_device) 734c66ac9dbSNicholas Bellinger dev->transport->free_device(dev->dev_ptr); 735c66ac9dbSNicholas Bellinger } 736c66ac9dbSNicholas Bellinger 737c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 738c66ac9dbSNicholas Bellinger list_del(&dev->dev_list); 739c66ac9dbSNicholas Bellinger hba->dev_count--; 740c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 741c66ac9dbSNicholas Bellinger 742c66ac9dbSNicholas Bellinger core_scsi3_free_all_registrations(dev); 743c66ac9dbSNicholas Bellinger se_release_vpd_for_dev(dev); 744c66ac9dbSNicholas Bellinger 745c66ac9dbSNicholas Bellinger kfree(dev); 746c66ac9dbSNicholas Bellinger } 747c66ac9dbSNicholas Bellinger 748c66ac9dbSNicholas Bellinger void se_release_vpd_for_dev(struct se_device *dev) 749c66ac9dbSNicholas Bellinger { 750c66ac9dbSNicholas Bellinger struct t10_vpd *vpd, *vpd_tmp; 751c66ac9dbSNicholas Bellinger 752e3d6f909SAndy Grover spin_lock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); 753c66ac9dbSNicholas Bellinger list_for_each_entry_safe(vpd, vpd_tmp, 754e3d6f909SAndy Grover &dev->se_sub_dev->t10_wwn.t10_vpd_list, vpd_list) { 755c66ac9dbSNicholas Bellinger list_del(&vpd->vpd_list); 756c66ac9dbSNicholas Bellinger kfree(vpd); 757c66ac9dbSNicholas Bellinger } 758e3d6f909SAndy Grover spin_unlock(&dev->se_sub_dev->t10_wwn.t10_vpd_lock); 759c66ac9dbSNicholas Bellinger } 760c66ac9dbSNicholas Bellinger 761c66ac9dbSNicholas Bellinger /* se_free_virtual_device(): 762c66ac9dbSNicholas Bellinger * 763c66ac9dbSNicholas Bellinger * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. 764c66ac9dbSNicholas Bellinger */ 765c66ac9dbSNicholas Bellinger int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) 766c66ac9dbSNicholas Bellinger { 76705aea6e7SFubo Chen if (!list_empty(&dev->dev_sep_list)) 76805aea6e7SFubo Chen dump_stack(); 769c66ac9dbSNicholas Bellinger 770c66ac9dbSNicholas Bellinger core_alua_free_lu_gp_mem(dev); 771c66ac9dbSNicholas Bellinger se_release_device_for_hba(dev); 772c66ac9dbSNicholas Bellinger 773c66ac9dbSNicholas Bellinger return 0; 774c66ac9dbSNicholas Bellinger } 775c66ac9dbSNicholas Bellinger 776c66ac9dbSNicholas Bellinger static void se_dev_start(struct se_device *dev) 777c66ac9dbSNicholas Bellinger { 778c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 779c66ac9dbSNicholas Bellinger 780c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 781c66ac9dbSNicholas Bellinger atomic_inc(&dev->dev_obj.obj_access_count); 782c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { 783c66ac9dbSNicholas Bellinger if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { 784c66ac9dbSNicholas Bellinger dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; 785c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; 786c66ac9dbSNicholas Bellinger } else if (dev->dev_status & 787c66ac9dbSNicholas Bellinger TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { 788c66ac9dbSNicholas Bellinger dev->dev_status &= 789c66ac9dbSNicholas Bellinger ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; 790c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; 791c66ac9dbSNicholas Bellinger } 792c66ac9dbSNicholas Bellinger } 793c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 794c66ac9dbSNicholas Bellinger } 795c66ac9dbSNicholas Bellinger 796c66ac9dbSNicholas Bellinger static void se_dev_stop(struct se_device *dev) 797c66ac9dbSNicholas Bellinger { 798c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 799c66ac9dbSNicholas Bellinger 800c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 801c66ac9dbSNicholas Bellinger atomic_dec(&dev->dev_obj.obj_access_count); 802c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { 803c66ac9dbSNicholas Bellinger if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { 804c66ac9dbSNicholas Bellinger dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; 805c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; 806c66ac9dbSNicholas Bellinger } else if (dev->dev_status & 807c66ac9dbSNicholas Bellinger TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { 808c66ac9dbSNicholas Bellinger dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; 809c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; 810c66ac9dbSNicholas Bellinger } 811c66ac9dbSNicholas Bellinger } 812c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 813c66ac9dbSNicholas Bellinger } 814c66ac9dbSNicholas Bellinger 815c66ac9dbSNicholas Bellinger int se_dev_check_online(struct se_device *dev) 816c66ac9dbSNicholas Bellinger { 81756e34ee2SRoland Dreier unsigned long flags; 818c66ac9dbSNicholas Bellinger int ret; 819c66ac9dbSNicholas Bellinger 82056e34ee2SRoland Dreier spin_lock_irqsave(&dev->dev_status_lock, flags); 821c66ac9dbSNicholas Bellinger ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || 822c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; 82356e34ee2SRoland Dreier spin_unlock_irqrestore(&dev->dev_status_lock, flags); 824c66ac9dbSNicholas Bellinger 825c66ac9dbSNicholas Bellinger return ret; 826c66ac9dbSNicholas Bellinger } 827c66ac9dbSNicholas Bellinger 828c66ac9dbSNicholas Bellinger int se_dev_check_shutdown(struct se_device *dev) 829c66ac9dbSNicholas Bellinger { 830c66ac9dbSNicholas Bellinger int ret; 831c66ac9dbSNicholas Bellinger 832c66ac9dbSNicholas Bellinger spin_lock_irq(&dev->dev_status_lock); 833c66ac9dbSNicholas Bellinger ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); 834c66ac9dbSNicholas Bellinger spin_unlock_irq(&dev->dev_status_lock); 835c66ac9dbSNicholas Bellinger 836c66ac9dbSNicholas Bellinger return ret; 837c66ac9dbSNicholas Bellinger } 838c66ac9dbSNicholas Bellinger 839c66ac9dbSNicholas Bellinger void se_dev_set_default_attribs( 840c66ac9dbSNicholas Bellinger struct se_device *dev, 841c66ac9dbSNicholas Bellinger struct se_dev_limits *dev_limits) 842c66ac9dbSNicholas Bellinger { 843c66ac9dbSNicholas Bellinger struct queue_limits *limits = &dev_limits->limits; 844c66ac9dbSNicholas Bellinger 845e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_dpo = DA_EMULATE_DPO; 846e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE; 847e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ; 848e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE; 849e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; 850e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_tas = DA_EMULATE_TAS; 851e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_tpu = DA_EMULATE_TPU; 852e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_tpws = DA_EMULATE_TPWS; 853e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS; 854e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_alua = DA_EMULATE_ALUA; 855e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; 856c66ac9dbSNicholas Bellinger /* 857c66ac9dbSNicholas Bellinger * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK 858c66ac9dbSNicholas Bellinger * iblock_create_virtdevice() from struct queue_limits values 859c66ac9dbSNicholas Bellinger * if blk_queue_discard()==1 860c66ac9dbSNicholas Bellinger */ 861e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; 862e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = 863c66ac9dbSNicholas Bellinger DA_MAX_UNMAP_BLOCK_DESC_COUNT; 864e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; 865e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = 866c66ac9dbSNicholas Bellinger DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; 867c66ac9dbSNicholas Bellinger /* 868c66ac9dbSNicholas Bellinger * block_size is based on subsystem plugin dependent requirements. 869c66ac9dbSNicholas Bellinger */ 870e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_block_size = limits->logical_block_size; 871e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.block_size = limits->logical_block_size; 872c66ac9dbSNicholas Bellinger /* 873c66ac9dbSNicholas Bellinger * max_sectors is based on subsystem plugin dependent requirements. 874c66ac9dbSNicholas Bellinger */ 875e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_max_sectors = limits->max_hw_sectors; 876e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.max_sectors = limits->max_sectors; 877c66ac9dbSNicholas Bellinger /* 878c66ac9dbSNicholas Bellinger * Set optimal_sectors from max_sectors, which can be lowered via 879c66ac9dbSNicholas Bellinger * configfs. 880c66ac9dbSNicholas Bellinger */ 881e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.optimal_sectors = limits->max_sectors; 882c66ac9dbSNicholas Bellinger /* 883c66ac9dbSNicholas Bellinger * queue_depth is based on subsystem plugin dependent requirements. 884c66ac9dbSNicholas Bellinger */ 885e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_queue_depth = dev_limits->hw_queue_depth; 886e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.queue_depth = dev_limits->queue_depth; 887c66ac9dbSNicholas Bellinger } 888c66ac9dbSNicholas Bellinger 889c66ac9dbSNicholas Bellinger int se_dev_set_task_timeout(struct se_device *dev, u32 task_timeout) 890c66ac9dbSNicholas Bellinger { 891c66ac9dbSNicholas Bellinger if (task_timeout > DA_TASK_TIMEOUT_MAX) { 892c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed task_timeout: %u larger then" 893c66ac9dbSNicholas Bellinger " DA_TASK_TIMEOUT_MAX\n", dev, task_timeout); 894e3d6f909SAndy Grover return -EINVAL; 895c66ac9dbSNicholas Bellinger } else { 896e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.task_timeout = task_timeout; 897c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set SE Device task_timeout: %u\n", 898c66ac9dbSNicholas Bellinger dev, task_timeout); 899c66ac9dbSNicholas Bellinger } 900c66ac9dbSNicholas Bellinger 901c66ac9dbSNicholas Bellinger return 0; 902c66ac9dbSNicholas Bellinger } 903c66ac9dbSNicholas Bellinger 904c66ac9dbSNicholas Bellinger int se_dev_set_max_unmap_lba_count( 905c66ac9dbSNicholas Bellinger struct se_device *dev, 906c66ac9dbSNicholas Bellinger u32 max_unmap_lba_count) 907c66ac9dbSNicholas Bellinger { 908e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count = max_unmap_lba_count; 909c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set max_unmap_lba_count: %u\n", 910e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count); 911c66ac9dbSNicholas Bellinger return 0; 912c66ac9dbSNicholas Bellinger } 913c66ac9dbSNicholas Bellinger 914c66ac9dbSNicholas Bellinger int se_dev_set_max_unmap_block_desc_count( 915c66ac9dbSNicholas Bellinger struct se_device *dev, 916c66ac9dbSNicholas Bellinger u32 max_unmap_block_desc_count) 917c66ac9dbSNicholas Bellinger { 918e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count = 919e3d6f909SAndy Grover max_unmap_block_desc_count; 920c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set max_unmap_block_desc_count: %u\n", 921e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count); 922c66ac9dbSNicholas Bellinger return 0; 923c66ac9dbSNicholas Bellinger } 924c66ac9dbSNicholas Bellinger 925c66ac9dbSNicholas Bellinger int se_dev_set_unmap_granularity( 926c66ac9dbSNicholas Bellinger struct se_device *dev, 927c66ac9dbSNicholas Bellinger u32 unmap_granularity) 928c66ac9dbSNicholas Bellinger { 929e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.unmap_granularity = unmap_granularity; 930c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set unmap_granularity: %u\n", 931e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity); 932c66ac9dbSNicholas Bellinger return 0; 933c66ac9dbSNicholas Bellinger } 934c66ac9dbSNicholas Bellinger 935c66ac9dbSNicholas Bellinger int se_dev_set_unmap_granularity_alignment( 936c66ac9dbSNicholas Bellinger struct se_device *dev, 937c66ac9dbSNicholas Bellinger u32 unmap_granularity_alignment) 938c66ac9dbSNicholas Bellinger { 939e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment; 940c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set unmap_granularity_alignment: %u\n", 941e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment); 942c66ac9dbSNicholas Bellinger return 0; 943c66ac9dbSNicholas Bellinger } 944c66ac9dbSNicholas Bellinger 945c66ac9dbSNicholas Bellinger int se_dev_set_emulate_dpo(struct se_device *dev, int flag) 946c66ac9dbSNicholas Bellinger { 947c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 948c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 949e3d6f909SAndy Grover return -EINVAL; 950c66ac9dbSNicholas Bellinger } 951e3d6f909SAndy Grover if (dev->transport->dpo_emulated == NULL) { 952e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->dpo_emulated is NULL\n"); 953e3d6f909SAndy Grover return -EINVAL; 954c66ac9dbSNicholas Bellinger } 955e3d6f909SAndy Grover if (dev->transport->dpo_emulated(dev) == 0) { 956e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->dpo_emulated not supported\n"); 957e3d6f909SAndy Grover return -EINVAL; 958c66ac9dbSNicholas Bellinger } 959e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_dpo = flag; 960c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Page Out (DPO) Emulation" 961e3d6f909SAndy Grover " bit: %d\n", dev, dev->se_sub_dev->se_dev_attrib.emulate_dpo); 962c66ac9dbSNicholas Bellinger return 0; 963c66ac9dbSNicholas Bellinger } 964c66ac9dbSNicholas Bellinger 965c66ac9dbSNicholas Bellinger int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) 966c66ac9dbSNicholas Bellinger { 967c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 968c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 969e3d6f909SAndy Grover return -EINVAL; 970c66ac9dbSNicholas Bellinger } 971e3d6f909SAndy Grover if (dev->transport->fua_write_emulated == NULL) { 972e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->fua_write_emulated is NULL\n"); 973e3d6f909SAndy Grover return -EINVAL; 974c66ac9dbSNicholas Bellinger } 975e3d6f909SAndy Grover if (dev->transport->fua_write_emulated(dev) == 0) { 976e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->fua_write_emulated not supported\n"); 977e3d6f909SAndy Grover return -EINVAL; 978c66ac9dbSNicholas Bellinger } 979e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_fua_write = flag; 980c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", 981e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_write); 982c66ac9dbSNicholas Bellinger return 0; 983c66ac9dbSNicholas Bellinger } 984c66ac9dbSNicholas Bellinger 985c66ac9dbSNicholas Bellinger int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) 986c66ac9dbSNicholas Bellinger { 987c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 988c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 989e3d6f909SAndy Grover return -EINVAL; 990c66ac9dbSNicholas Bellinger } 991e3d6f909SAndy Grover if (dev->transport->fua_read_emulated == NULL) { 992e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->fua_read_emulated is NULL\n"); 993e3d6f909SAndy Grover return -EINVAL; 994c66ac9dbSNicholas Bellinger } 995e3d6f909SAndy Grover if (dev->transport->fua_read_emulated(dev) == 0) { 996e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->fua_read_emulated not supported\n"); 997e3d6f909SAndy Grover return -EINVAL; 998c66ac9dbSNicholas Bellinger } 999e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_fua_read = flag; 1000c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access READs: %d\n", 1001e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.emulate_fua_read); 1002c66ac9dbSNicholas Bellinger return 0; 1003c66ac9dbSNicholas Bellinger } 1004c66ac9dbSNicholas Bellinger 1005c66ac9dbSNicholas Bellinger int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) 1006c66ac9dbSNicholas Bellinger { 1007c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1008c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1009e3d6f909SAndy Grover return -EINVAL; 1010c66ac9dbSNicholas Bellinger } 1011e3d6f909SAndy Grover if (dev->transport->write_cache_emulated == NULL) { 1012e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->write_cache_emulated is NULL\n"); 1013e3d6f909SAndy Grover return -EINVAL; 1014c66ac9dbSNicholas Bellinger } 1015e3d6f909SAndy Grover if (dev->transport->write_cache_emulated(dev) == 0) { 1016e3d6f909SAndy Grover printk(KERN_ERR "dev->transport->write_cache_emulated not supported\n"); 1017e3d6f909SAndy Grover return -EINVAL; 1018c66ac9dbSNicholas Bellinger } 1019e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_write_cache = flag; 1020c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", 1021e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.emulate_write_cache); 1022c66ac9dbSNicholas Bellinger return 0; 1023c66ac9dbSNicholas Bellinger } 1024c66ac9dbSNicholas Bellinger 1025c66ac9dbSNicholas Bellinger int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) 1026c66ac9dbSNicholas Bellinger { 1027c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1) && (flag != 2)) { 1028c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1029e3d6f909SAndy Grover return -EINVAL; 1030c66ac9dbSNicholas Bellinger } 1031c66ac9dbSNicholas Bellinger 1032c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1033c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device" 1034c66ac9dbSNicholas Bellinger " UA_INTRLCK_CTRL while dev_export_obj: %d count" 1035c66ac9dbSNicholas Bellinger " exists\n", dev, 1036c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1037e3d6f909SAndy Grover return -EINVAL; 1038c66ac9dbSNicholas Bellinger } 1039e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl = flag; 1040c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", 1041e3d6f909SAndy Grover dev, dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl); 1042c66ac9dbSNicholas Bellinger 1043c66ac9dbSNicholas Bellinger return 0; 1044c66ac9dbSNicholas Bellinger } 1045c66ac9dbSNicholas Bellinger 1046c66ac9dbSNicholas Bellinger int se_dev_set_emulate_tas(struct se_device *dev, int flag) 1047c66ac9dbSNicholas Bellinger { 1048c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1049c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1050e3d6f909SAndy Grover return -EINVAL; 1051c66ac9dbSNicholas Bellinger } 1052c66ac9dbSNicholas Bellinger 1053c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1054c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device TAS while" 1055c66ac9dbSNicholas Bellinger " dev_export_obj: %d count exists\n", dev, 1056c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1057e3d6f909SAndy Grover return -EINVAL; 1058c66ac9dbSNicholas Bellinger } 1059e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_tas = flag; 1060c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device TASK_ABORTED status bit: %s\n", 1061e3d6f909SAndy Grover dev, (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? "Enabled" : "Disabled"); 1062c66ac9dbSNicholas Bellinger 1063c66ac9dbSNicholas Bellinger return 0; 1064c66ac9dbSNicholas Bellinger } 1065c66ac9dbSNicholas Bellinger 1066c66ac9dbSNicholas Bellinger int se_dev_set_emulate_tpu(struct se_device *dev, int flag) 1067c66ac9dbSNicholas Bellinger { 1068c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1069c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1070e3d6f909SAndy Grover return -EINVAL; 1071c66ac9dbSNicholas Bellinger } 1072c66ac9dbSNicholas Bellinger /* 1073c66ac9dbSNicholas Bellinger * We expect this value to be non-zero when generic Block Layer 1074c66ac9dbSNicholas Bellinger * Discard supported is detected iblock_create_virtdevice(). 1075c66ac9dbSNicholas Bellinger */ 1076e3d6f909SAndy Grover if (!(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count)) { 1077c66ac9dbSNicholas Bellinger printk(KERN_ERR "Generic Block Discard not supported\n"); 1078c66ac9dbSNicholas Bellinger return -ENOSYS; 1079c66ac9dbSNicholas Bellinger } 1080c66ac9dbSNicholas Bellinger 1081e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_tpu = flag; 1082c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", 1083c66ac9dbSNicholas Bellinger dev, flag); 1084c66ac9dbSNicholas Bellinger return 0; 1085c66ac9dbSNicholas Bellinger } 1086c66ac9dbSNicholas Bellinger 1087c66ac9dbSNicholas Bellinger int se_dev_set_emulate_tpws(struct se_device *dev, int flag) 1088c66ac9dbSNicholas Bellinger { 1089c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1090c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1091e3d6f909SAndy Grover return -EINVAL; 1092c66ac9dbSNicholas Bellinger } 1093c66ac9dbSNicholas Bellinger /* 1094c66ac9dbSNicholas Bellinger * We expect this value to be non-zero when generic Block Layer 1095c66ac9dbSNicholas Bellinger * Discard supported is detected iblock_create_virtdevice(). 1096c66ac9dbSNicholas Bellinger */ 1097e3d6f909SAndy Grover if (!(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count)) { 1098c66ac9dbSNicholas Bellinger printk(KERN_ERR "Generic Block Discard not supported\n"); 1099c66ac9dbSNicholas Bellinger return -ENOSYS; 1100c66ac9dbSNicholas Bellinger } 1101c66ac9dbSNicholas Bellinger 1102e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.emulate_tpws = flag; 1103c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", 1104c66ac9dbSNicholas Bellinger dev, flag); 1105c66ac9dbSNicholas Bellinger return 0; 1106c66ac9dbSNicholas Bellinger } 1107c66ac9dbSNicholas Bellinger 1108c66ac9dbSNicholas Bellinger int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) 1109c66ac9dbSNicholas Bellinger { 1110c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1111c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1112e3d6f909SAndy Grover return -EINVAL; 1113c66ac9dbSNicholas Bellinger } 1114e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.enforce_pr_isids = flag; 1115c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, 1116e3d6f909SAndy Grover (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled"); 1117c66ac9dbSNicholas Bellinger return 0; 1118c66ac9dbSNicholas Bellinger } 1119c66ac9dbSNicholas Bellinger 1120c66ac9dbSNicholas Bellinger /* 1121c66ac9dbSNicholas Bellinger * Note, this can only be called on unexported SE Device Object. 1122c66ac9dbSNicholas Bellinger */ 1123c66ac9dbSNicholas Bellinger int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) 1124c66ac9dbSNicholas Bellinger { 1125c66ac9dbSNicholas Bellinger u32 orig_queue_depth = dev->queue_depth; 1126c66ac9dbSNicholas Bellinger 1127c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1128c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device TCQ while" 1129c66ac9dbSNicholas Bellinger " dev_export_obj: %d count exists\n", dev, 1130c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1131e3d6f909SAndy Grover return -EINVAL; 1132c66ac9dbSNicholas Bellinger } 1133c66ac9dbSNicholas Bellinger if (!(queue_depth)) { 1134c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Illegal ZERO value for queue" 1135c66ac9dbSNicholas Bellinger "_depth\n", dev); 1136e3d6f909SAndy Grover return -EINVAL; 1137c66ac9dbSNicholas Bellinger } 1138c66ac9dbSNicholas Bellinger 1139e3d6f909SAndy Grover if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1140e3d6f909SAndy Grover if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { 1141c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed queue_depth: %u" 1142c66ac9dbSNicholas Bellinger " exceeds TCM/SE_Device TCQ: %u\n", 1143c66ac9dbSNicholas Bellinger dev, queue_depth, 1144e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_queue_depth); 1145e3d6f909SAndy Grover return -EINVAL; 1146c66ac9dbSNicholas Bellinger } 1147c66ac9dbSNicholas Bellinger } else { 1148e3d6f909SAndy Grover if (queue_depth > dev->se_sub_dev->se_dev_attrib.queue_depth) { 1149e3d6f909SAndy Grover if (queue_depth > dev->se_sub_dev->se_dev_attrib.hw_queue_depth) { 1150c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed queue_depth:" 1151c66ac9dbSNicholas Bellinger " %u exceeds TCM/SE_Device MAX" 1152c66ac9dbSNicholas Bellinger " TCQ: %u\n", dev, queue_depth, 1153e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_queue_depth); 1154e3d6f909SAndy Grover return -EINVAL; 1155c66ac9dbSNicholas Bellinger } 1156c66ac9dbSNicholas Bellinger } 1157c66ac9dbSNicholas Bellinger } 1158c66ac9dbSNicholas Bellinger 1159e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.queue_depth = dev->queue_depth = queue_depth; 1160c66ac9dbSNicholas Bellinger if (queue_depth > orig_queue_depth) 1161c66ac9dbSNicholas Bellinger atomic_add(queue_depth - orig_queue_depth, &dev->depth_left); 1162c66ac9dbSNicholas Bellinger else if (queue_depth < orig_queue_depth) 1163c66ac9dbSNicholas Bellinger atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left); 1164c66ac9dbSNicholas Bellinger 1165c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device TCQ Depth changed to: %u\n", 1166c66ac9dbSNicholas Bellinger dev, queue_depth); 1167c66ac9dbSNicholas Bellinger return 0; 1168c66ac9dbSNicholas Bellinger } 1169c66ac9dbSNicholas Bellinger 1170c66ac9dbSNicholas Bellinger int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) 1171c66ac9dbSNicholas Bellinger { 1172c66ac9dbSNicholas Bellinger int force = 0; /* Force setting for VDEVS */ 1173c66ac9dbSNicholas Bellinger 1174c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1175c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device" 1176c66ac9dbSNicholas Bellinger " max_sectors while dev_export_obj: %d count exists\n", 1177c66ac9dbSNicholas Bellinger dev, atomic_read(&dev->dev_export_obj.obj_access_count)); 1178e3d6f909SAndy Grover return -EINVAL; 1179c66ac9dbSNicholas Bellinger } 1180c66ac9dbSNicholas Bellinger if (!(max_sectors)) { 1181c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Illegal ZERO value for" 1182c66ac9dbSNicholas Bellinger " max_sectors\n", dev); 1183e3d6f909SAndy Grover return -EINVAL; 1184c66ac9dbSNicholas Bellinger } 1185c66ac9dbSNicholas Bellinger if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { 1186c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u less than" 1187c66ac9dbSNicholas Bellinger " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, 1188c66ac9dbSNicholas Bellinger DA_STATUS_MAX_SECTORS_MIN); 1189e3d6f909SAndy Grover return -EINVAL; 1190c66ac9dbSNicholas Bellinger } 1191e3d6f909SAndy Grover if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1192e3d6f909SAndy Grover if (max_sectors > dev->se_sub_dev->se_dev_attrib.hw_max_sectors) { 1193c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" 1194c66ac9dbSNicholas Bellinger " greater than TCM/SE_Device max_sectors:" 1195c66ac9dbSNicholas Bellinger " %u\n", dev, max_sectors, 1196e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_max_sectors); 1197e3d6f909SAndy Grover return -EINVAL; 1198c66ac9dbSNicholas Bellinger } 1199c66ac9dbSNicholas Bellinger } else { 1200c66ac9dbSNicholas Bellinger if (!(force) && (max_sectors > 1201e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.hw_max_sectors)) { 1202c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" 1203c66ac9dbSNicholas Bellinger " greater than TCM/SE_Device max_sectors" 1204c66ac9dbSNicholas Bellinger ": %u, use force=1 to override.\n", dev, 1205e3d6f909SAndy Grover max_sectors, dev->se_sub_dev->se_dev_attrib.hw_max_sectors); 1206e3d6f909SAndy Grover return -EINVAL; 1207c66ac9dbSNicholas Bellinger } 1208c66ac9dbSNicholas Bellinger if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { 1209c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" 1210c66ac9dbSNicholas Bellinger " greater than DA_STATUS_MAX_SECTORS_MAX:" 1211c66ac9dbSNicholas Bellinger " %u\n", dev, max_sectors, 1212c66ac9dbSNicholas Bellinger DA_STATUS_MAX_SECTORS_MAX); 1213e3d6f909SAndy Grover return -EINVAL; 1214c66ac9dbSNicholas Bellinger } 1215c66ac9dbSNicholas Bellinger } 1216c66ac9dbSNicholas Bellinger 1217e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.max_sectors = max_sectors; 1218c66ac9dbSNicholas Bellinger printk("dev[%p]: SE Device max_sectors changed to %u\n", 1219c66ac9dbSNicholas Bellinger dev, max_sectors); 1220c66ac9dbSNicholas Bellinger return 0; 1221c66ac9dbSNicholas Bellinger } 1222c66ac9dbSNicholas Bellinger 1223c66ac9dbSNicholas Bellinger int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) 1224c66ac9dbSNicholas Bellinger { 1225c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1226c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device" 1227c66ac9dbSNicholas Bellinger " optimal_sectors while dev_export_obj: %d count exists\n", 1228c66ac9dbSNicholas Bellinger dev, atomic_read(&dev->dev_export_obj.obj_access_count)); 1229c66ac9dbSNicholas Bellinger return -EINVAL; 1230c66ac9dbSNicholas Bellinger } 1231e3d6f909SAndy Grover if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1232c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed optimal_sectors cannot be" 1233c66ac9dbSNicholas Bellinger " changed for TCM/pSCSI\n", dev); 1234c66ac9dbSNicholas Bellinger return -EINVAL; 1235c66ac9dbSNicholas Bellinger } 1236e3d6f909SAndy Grover if (optimal_sectors > dev->se_sub_dev->se_dev_attrib.max_sectors) { 1237c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed optimal_sectors %u cannot be" 1238c66ac9dbSNicholas Bellinger " greater than max_sectors: %u\n", dev, 1239e3d6f909SAndy Grover optimal_sectors, dev->se_sub_dev->se_dev_attrib.max_sectors); 1240c66ac9dbSNicholas Bellinger return -EINVAL; 1241c66ac9dbSNicholas Bellinger } 1242c66ac9dbSNicholas Bellinger 1243e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.optimal_sectors = optimal_sectors; 1244c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device optimal_sectors changed to %u\n", 1245c66ac9dbSNicholas Bellinger dev, optimal_sectors); 1246c66ac9dbSNicholas Bellinger return 0; 1247c66ac9dbSNicholas Bellinger } 1248c66ac9dbSNicholas Bellinger 1249c66ac9dbSNicholas Bellinger int se_dev_set_block_size(struct se_device *dev, u32 block_size) 1250c66ac9dbSNicholas Bellinger { 1251c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1252c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device block_size" 1253c66ac9dbSNicholas Bellinger " while dev_export_obj: %d count exists\n", dev, 1254c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1255e3d6f909SAndy Grover return -EINVAL; 1256c66ac9dbSNicholas Bellinger } 1257c66ac9dbSNicholas Bellinger 1258c66ac9dbSNicholas Bellinger if ((block_size != 512) && 1259c66ac9dbSNicholas Bellinger (block_size != 1024) && 1260c66ac9dbSNicholas Bellinger (block_size != 2048) && 1261c66ac9dbSNicholas Bellinger (block_size != 4096)) { 1262c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Illegal value for block_device: %u" 1263c66ac9dbSNicholas Bellinger " for SE device, must be 512, 1024, 2048 or 4096\n", 1264c66ac9dbSNicholas Bellinger dev, block_size); 1265e3d6f909SAndy Grover return -EINVAL; 1266c66ac9dbSNicholas Bellinger } 1267c66ac9dbSNicholas Bellinger 1268e3d6f909SAndy Grover if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1269c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Not allowed to change block_size for" 1270c66ac9dbSNicholas Bellinger " Physical Device, use for Linux/SCSI to change" 1271c66ac9dbSNicholas Bellinger " block_size for underlying hardware\n", dev); 1272e3d6f909SAndy Grover return -EINVAL; 1273c66ac9dbSNicholas Bellinger } 1274c66ac9dbSNicholas Bellinger 1275e3d6f909SAndy Grover dev->se_sub_dev->se_dev_attrib.block_size = block_size; 1276c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device block_size changed to %u\n", 1277c66ac9dbSNicholas Bellinger dev, block_size); 1278c66ac9dbSNicholas Bellinger return 0; 1279c66ac9dbSNicholas Bellinger } 1280c66ac9dbSNicholas Bellinger 1281c66ac9dbSNicholas Bellinger struct se_lun *core_dev_add_lun( 1282c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1283c66ac9dbSNicholas Bellinger struct se_hba *hba, 1284c66ac9dbSNicholas Bellinger struct se_device *dev, 1285c66ac9dbSNicholas Bellinger u32 lun) 1286c66ac9dbSNicholas Bellinger { 1287c66ac9dbSNicholas Bellinger struct se_lun *lun_p; 1288c66ac9dbSNicholas Bellinger u32 lun_access = 0; 1289c66ac9dbSNicholas Bellinger 1290c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { 1291c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to export struct se_device while dev_access_obj: %d\n", 1292c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_access_obj.obj_access_count)); 1293c66ac9dbSNicholas Bellinger return NULL; 1294c66ac9dbSNicholas Bellinger } 1295c66ac9dbSNicholas Bellinger 1296c66ac9dbSNicholas Bellinger lun_p = core_tpg_pre_addlun(tpg, lun); 1297c66ac9dbSNicholas Bellinger if ((IS_ERR(lun_p)) || !(lun_p)) 1298c66ac9dbSNicholas Bellinger return NULL; 1299c66ac9dbSNicholas Bellinger 1300c66ac9dbSNicholas Bellinger if (dev->dev_flags & DF_READ_ONLY) 1301c66ac9dbSNicholas Bellinger lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; 1302c66ac9dbSNicholas Bellinger else 1303c66ac9dbSNicholas Bellinger lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; 1304c66ac9dbSNicholas Bellinger 1305c66ac9dbSNicholas Bellinger if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0) 1306c66ac9dbSNicholas Bellinger return NULL; 1307c66ac9dbSNicholas Bellinger 1308c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" 1309e3d6f909SAndy Grover " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), 1310e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), lun_p->unpacked_lun, 1311e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), hba->hba_id); 1312c66ac9dbSNicholas Bellinger /* 1313c66ac9dbSNicholas Bellinger * Update LUN maps for dynamically added initiators when 1314c66ac9dbSNicholas Bellinger * generate_node_acl is enabled. 1315c66ac9dbSNicholas Bellinger */ 1316e3d6f909SAndy Grover if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) { 1317c66ac9dbSNicholas Bellinger struct se_node_acl *acl; 1318c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 1319c66ac9dbSNicholas Bellinger list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { 1320c66ac9dbSNicholas Bellinger if (acl->dynamic_node_acl) { 1321c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 1322c66ac9dbSNicholas Bellinger core_tpg_add_node_to_devs(acl, tpg); 1323c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 1324c66ac9dbSNicholas Bellinger } 1325c66ac9dbSNicholas Bellinger } 1326c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 1327c66ac9dbSNicholas Bellinger } 1328c66ac9dbSNicholas Bellinger 1329c66ac9dbSNicholas Bellinger return lun_p; 1330c66ac9dbSNicholas Bellinger } 1331c66ac9dbSNicholas Bellinger 1332c66ac9dbSNicholas Bellinger /* core_dev_del_lun(): 1333c66ac9dbSNicholas Bellinger * 1334c66ac9dbSNicholas Bellinger * 1335c66ac9dbSNicholas Bellinger */ 1336c66ac9dbSNicholas Bellinger int core_dev_del_lun( 1337c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1338c66ac9dbSNicholas Bellinger u32 unpacked_lun) 1339c66ac9dbSNicholas Bellinger { 1340c66ac9dbSNicholas Bellinger struct se_lun *lun; 1341c66ac9dbSNicholas Bellinger int ret = 0; 1342c66ac9dbSNicholas Bellinger 1343c66ac9dbSNicholas Bellinger lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret); 1344c66ac9dbSNicholas Bellinger if (!(lun)) 1345c66ac9dbSNicholas Bellinger return ret; 1346c66ac9dbSNicholas Bellinger 1347c66ac9dbSNicholas Bellinger core_tpg_post_dellun(tpg, lun); 1348c66ac9dbSNicholas Bellinger 1349c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" 1350e3d6f909SAndy Grover " device object\n", tpg->se_tpg_tfo->get_fabric_name(), 1351e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, 1352e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name()); 1353c66ac9dbSNicholas Bellinger 1354c66ac9dbSNicholas Bellinger return 0; 1355c66ac9dbSNicholas Bellinger } 1356c66ac9dbSNicholas Bellinger 1357c66ac9dbSNicholas Bellinger struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) 1358c66ac9dbSNicholas Bellinger { 1359c66ac9dbSNicholas Bellinger struct se_lun *lun; 1360c66ac9dbSNicholas Bellinger 1361c66ac9dbSNicholas Bellinger spin_lock(&tpg->tpg_lun_lock); 1362c66ac9dbSNicholas Bellinger if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { 1363c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS" 1364c66ac9dbSNicholas Bellinger "_PER_TPG-1: %u for Target Portal Group: %hu\n", 1365e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, 1366c66ac9dbSNicholas Bellinger TRANSPORT_MAX_LUNS_PER_TPG-1, 1367e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg)); 1368c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1369c66ac9dbSNicholas Bellinger return NULL; 1370c66ac9dbSNicholas Bellinger } 1371c66ac9dbSNicholas Bellinger lun = &tpg->tpg_lun_list[unpacked_lun]; 1372c66ac9dbSNicholas Bellinger 1373c66ac9dbSNicholas Bellinger if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { 1374c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s Logical Unit Number: %u is not free on" 1375c66ac9dbSNicholas Bellinger " Target Portal Group: %hu, ignoring request.\n", 1376e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, 1377e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg)); 1378c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1379c66ac9dbSNicholas Bellinger return NULL; 1380c66ac9dbSNicholas Bellinger } 1381c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1382c66ac9dbSNicholas Bellinger 1383c66ac9dbSNicholas Bellinger return lun; 1384c66ac9dbSNicholas Bellinger } 1385c66ac9dbSNicholas Bellinger 1386c66ac9dbSNicholas Bellinger /* core_dev_get_lun(): 1387c66ac9dbSNicholas Bellinger * 1388c66ac9dbSNicholas Bellinger * 1389c66ac9dbSNicholas Bellinger */ 1390c66ac9dbSNicholas Bellinger static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) 1391c66ac9dbSNicholas Bellinger { 1392c66ac9dbSNicholas Bellinger struct se_lun *lun; 1393c66ac9dbSNicholas Bellinger 1394c66ac9dbSNicholas Bellinger spin_lock(&tpg->tpg_lun_lock); 1395c66ac9dbSNicholas Bellinger if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { 1396c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" 1397c66ac9dbSNicholas Bellinger "_TPG-1: %u for Target Portal Group: %hu\n", 1398e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, 1399c66ac9dbSNicholas Bellinger TRANSPORT_MAX_LUNS_PER_TPG-1, 1400e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg)); 1401c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1402c66ac9dbSNicholas Bellinger return NULL; 1403c66ac9dbSNicholas Bellinger } 1404c66ac9dbSNicholas Bellinger lun = &tpg->tpg_lun_list[unpacked_lun]; 1405c66ac9dbSNicholas Bellinger 1406c66ac9dbSNicholas Bellinger if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { 1407c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s Logical Unit Number: %u is not active on" 1408c66ac9dbSNicholas Bellinger " Target Portal Group: %hu, ignoring request.\n", 1409e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, 1410e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg)); 1411c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1412c66ac9dbSNicholas Bellinger return NULL; 1413c66ac9dbSNicholas Bellinger } 1414c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1415c66ac9dbSNicholas Bellinger 1416c66ac9dbSNicholas Bellinger return lun; 1417c66ac9dbSNicholas Bellinger } 1418c66ac9dbSNicholas Bellinger 1419c66ac9dbSNicholas Bellinger struct se_lun_acl *core_dev_init_initiator_node_lun_acl( 1420c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1421c66ac9dbSNicholas Bellinger u32 mapped_lun, 1422c66ac9dbSNicholas Bellinger char *initiatorname, 1423c66ac9dbSNicholas Bellinger int *ret) 1424c66ac9dbSNicholas Bellinger { 1425c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl; 1426c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 1427c66ac9dbSNicholas Bellinger 142860d645a4SDan Carpenter if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) { 1429c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s InitiatorName exceeds maximum size.\n", 1430e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name()); 1431c66ac9dbSNicholas Bellinger *ret = -EOVERFLOW; 1432c66ac9dbSNicholas Bellinger return NULL; 1433c66ac9dbSNicholas Bellinger } 1434c66ac9dbSNicholas Bellinger nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); 1435c66ac9dbSNicholas Bellinger if (!(nacl)) { 1436c66ac9dbSNicholas Bellinger *ret = -EINVAL; 1437c66ac9dbSNicholas Bellinger return NULL; 1438c66ac9dbSNicholas Bellinger } 1439c66ac9dbSNicholas Bellinger lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); 1440c66ac9dbSNicholas Bellinger if (!(lacl)) { 1441c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate memory for struct se_lun_acl.\n"); 1442c66ac9dbSNicholas Bellinger *ret = -ENOMEM; 1443c66ac9dbSNicholas Bellinger return NULL; 1444c66ac9dbSNicholas Bellinger } 1445c66ac9dbSNicholas Bellinger 1446c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&lacl->lacl_list); 1447c66ac9dbSNicholas Bellinger lacl->mapped_lun = mapped_lun; 1448c66ac9dbSNicholas Bellinger lacl->se_lun_nacl = nacl; 1449c66ac9dbSNicholas Bellinger snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); 1450c66ac9dbSNicholas Bellinger 1451c66ac9dbSNicholas Bellinger return lacl; 1452c66ac9dbSNicholas Bellinger } 1453c66ac9dbSNicholas Bellinger 1454c66ac9dbSNicholas Bellinger int core_dev_add_initiator_node_lun_acl( 1455c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1456c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl, 1457c66ac9dbSNicholas Bellinger u32 unpacked_lun, 1458c66ac9dbSNicholas Bellinger u32 lun_access) 1459c66ac9dbSNicholas Bellinger { 1460c66ac9dbSNicholas Bellinger struct se_lun *lun; 1461c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 1462c66ac9dbSNicholas Bellinger 1463c66ac9dbSNicholas Bellinger lun = core_dev_get_lun(tpg, unpacked_lun); 1464c66ac9dbSNicholas Bellinger if (!(lun)) { 1465c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s Logical Unit Number: %u is not active on" 1466c66ac9dbSNicholas Bellinger " Target Portal Group: %hu, ignoring request.\n", 1467e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, 1468e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg)); 1469c66ac9dbSNicholas Bellinger return -EINVAL; 1470c66ac9dbSNicholas Bellinger } 1471c66ac9dbSNicholas Bellinger 1472c66ac9dbSNicholas Bellinger nacl = lacl->se_lun_nacl; 1473c66ac9dbSNicholas Bellinger if (!(nacl)) 1474c66ac9dbSNicholas Bellinger return -EINVAL; 1475c66ac9dbSNicholas Bellinger 1476c66ac9dbSNicholas Bellinger if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && 1477c66ac9dbSNicholas Bellinger (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) 1478c66ac9dbSNicholas Bellinger lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; 1479c66ac9dbSNicholas Bellinger 1480c66ac9dbSNicholas Bellinger lacl->se_lun = lun; 1481c66ac9dbSNicholas Bellinger 1482c66ac9dbSNicholas Bellinger if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, 1483c66ac9dbSNicholas Bellinger lun_access, nacl, tpg, 1) < 0) 1484c66ac9dbSNicholas Bellinger return -EINVAL; 1485c66ac9dbSNicholas Bellinger 1486c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_acl_lock); 1487c66ac9dbSNicholas Bellinger list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); 1488c66ac9dbSNicholas Bellinger atomic_inc(&lun->lun_acl_count); 1489c66ac9dbSNicholas Bellinger smp_mb__after_atomic_inc(); 1490c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_acl_lock); 1491c66ac9dbSNicholas Bellinger 1492c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " 1493e3d6f909SAndy Grover " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), 1494e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, 1495c66ac9dbSNicholas Bellinger (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", 1496c66ac9dbSNicholas Bellinger lacl->initiatorname); 1497c66ac9dbSNicholas Bellinger /* 1498c66ac9dbSNicholas Bellinger * Check to see if there are any existing persistent reservation APTPL 1499c66ac9dbSNicholas Bellinger * pre-registrations that need to be enabled for this LUN ACL.. 1500c66ac9dbSNicholas Bellinger */ 1501c66ac9dbSNicholas Bellinger core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); 1502c66ac9dbSNicholas Bellinger return 0; 1503c66ac9dbSNicholas Bellinger } 1504c66ac9dbSNicholas Bellinger 1505c66ac9dbSNicholas Bellinger /* core_dev_del_initiator_node_lun_acl(): 1506c66ac9dbSNicholas Bellinger * 1507c66ac9dbSNicholas Bellinger * 1508c66ac9dbSNicholas Bellinger */ 1509c66ac9dbSNicholas Bellinger int core_dev_del_initiator_node_lun_acl( 1510c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1511c66ac9dbSNicholas Bellinger struct se_lun *lun, 1512c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl) 1513c66ac9dbSNicholas Bellinger { 1514c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 1515c66ac9dbSNicholas Bellinger 1516c66ac9dbSNicholas Bellinger nacl = lacl->se_lun_nacl; 1517c66ac9dbSNicholas Bellinger if (!(nacl)) 1518c66ac9dbSNicholas Bellinger return -EINVAL; 1519c66ac9dbSNicholas Bellinger 1520c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_acl_lock); 1521c66ac9dbSNicholas Bellinger list_del(&lacl->lacl_list); 1522c66ac9dbSNicholas Bellinger atomic_dec(&lun->lun_acl_count); 1523c66ac9dbSNicholas Bellinger smp_mb__after_atomic_dec(); 1524c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_acl_lock); 1525c66ac9dbSNicholas Bellinger 1526c66ac9dbSNicholas Bellinger core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, 1527c66ac9dbSNicholas Bellinger TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); 1528c66ac9dbSNicholas Bellinger 1529c66ac9dbSNicholas Bellinger lacl->se_lun = NULL; 1530c66ac9dbSNicholas Bellinger 1531c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%hu]_LUN[%u] - Removed ACL for" 1532c66ac9dbSNicholas Bellinger " InitiatorNode: %s Mapped LUN: %u\n", 1533e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), 1534e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, 1535c66ac9dbSNicholas Bellinger lacl->initiatorname, lacl->mapped_lun); 1536c66ac9dbSNicholas Bellinger 1537c66ac9dbSNicholas Bellinger return 0; 1538c66ac9dbSNicholas Bellinger } 1539c66ac9dbSNicholas Bellinger 1540c66ac9dbSNicholas Bellinger void core_dev_free_initiator_node_lun_acl( 1541c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1542c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl) 1543c66ac9dbSNicholas Bellinger { 1544c66ac9dbSNicholas Bellinger printk("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" 1545e3d6f909SAndy Grover " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(), 1546e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 1547e3d6f909SAndy Grover tpg->se_tpg_tfo->get_fabric_name(), 1548c66ac9dbSNicholas Bellinger lacl->initiatorname, lacl->mapped_lun); 1549c66ac9dbSNicholas Bellinger 1550c66ac9dbSNicholas Bellinger kfree(lacl); 1551c66ac9dbSNicholas Bellinger } 1552c66ac9dbSNicholas Bellinger 1553c66ac9dbSNicholas Bellinger int core_dev_setup_virtual_lun0(void) 1554c66ac9dbSNicholas Bellinger { 1555c66ac9dbSNicholas Bellinger struct se_hba *hba; 1556c66ac9dbSNicholas Bellinger struct se_device *dev; 1557c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = NULL; 1558c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 1559c66ac9dbSNicholas Bellinger char buf[16]; 1560c66ac9dbSNicholas Bellinger int ret; 1561c66ac9dbSNicholas Bellinger 1562c66ac9dbSNicholas Bellinger hba = core_alloc_hba("rd_dr", 0, HBA_FLAGS_INTERNAL_USE); 1563c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 1564c66ac9dbSNicholas Bellinger return PTR_ERR(hba); 1565c66ac9dbSNicholas Bellinger 1566e3d6f909SAndy Grover lun0_hba = hba; 1567c66ac9dbSNicholas Bellinger t = hba->transport; 1568c66ac9dbSNicholas Bellinger 1569c66ac9dbSNicholas Bellinger se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); 1570c66ac9dbSNicholas Bellinger if (!(se_dev)) { 1571c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate memory for" 1572c66ac9dbSNicholas Bellinger " struct se_subsystem_dev\n"); 1573c66ac9dbSNicholas Bellinger ret = -ENOMEM; 1574c66ac9dbSNicholas Bellinger goto out; 1575c66ac9dbSNicholas Bellinger } 1576e3d6f909SAndy Grover INIT_LIST_HEAD(&se_dev->se_dev_node); 1577c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); 1578c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); 1579e3d6f909SAndy Grover INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); 1580e3d6f909SAndy Grover INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); 1581e3d6f909SAndy Grover spin_lock_init(&se_dev->t10_pr.registration_lock); 1582e3d6f909SAndy Grover spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); 1583c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); 1584c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); 1585c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->se_dev_lock); 1586e3d6f909SAndy Grover se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; 1587c66ac9dbSNicholas Bellinger se_dev->t10_wwn.t10_sub_dev = se_dev; 1588c66ac9dbSNicholas Bellinger se_dev->t10_alua.t10_sub_dev = se_dev; 1589c66ac9dbSNicholas Bellinger se_dev->se_dev_attrib.da_sub_dev = se_dev; 1590c66ac9dbSNicholas Bellinger se_dev->se_dev_hba = hba; 1591c66ac9dbSNicholas Bellinger 1592c66ac9dbSNicholas Bellinger se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); 1593c66ac9dbSNicholas Bellinger if (!(se_dev->se_dev_su_ptr)) { 1594c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to locate subsystem dependent pointer" 1595c66ac9dbSNicholas Bellinger " from allocate_virtdevice()\n"); 1596c66ac9dbSNicholas Bellinger ret = -ENOMEM; 1597c66ac9dbSNicholas Bellinger goto out; 1598c66ac9dbSNicholas Bellinger } 1599e3d6f909SAndy Grover lun0_su_dev = se_dev; 1600c66ac9dbSNicholas Bellinger 1601c66ac9dbSNicholas Bellinger memset(buf, 0, 16); 1602c66ac9dbSNicholas Bellinger sprintf(buf, "rd_pages=8"); 1603c66ac9dbSNicholas Bellinger t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); 1604c66ac9dbSNicholas Bellinger 1605c66ac9dbSNicholas Bellinger dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); 1606e3d6f909SAndy Grover if (IS_ERR(dev)) { 1607e3d6f909SAndy Grover ret = PTR_ERR(dev); 1608c66ac9dbSNicholas Bellinger goto out; 1609c66ac9dbSNicholas Bellinger } 1610c66ac9dbSNicholas Bellinger se_dev->se_dev_ptr = dev; 1611e3d6f909SAndy Grover g_lun0_dev = dev; 1612c66ac9dbSNicholas Bellinger 1613c66ac9dbSNicholas Bellinger return 0; 1614c66ac9dbSNicholas Bellinger out: 1615e3d6f909SAndy Grover lun0_su_dev = NULL; 1616c66ac9dbSNicholas Bellinger kfree(se_dev); 1617e3d6f909SAndy Grover if (lun0_hba) { 1618e3d6f909SAndy Grover core_delete_hba(lun0_hba); 1619e3d6f909SAndy Grover lun0_hba = NULL; 1620c66ac9dbSNicholas Bellinger } 1621c66ac9dbSNicholas Bellinger return ret; 1622c66ac9dbSNicholas Bellinger } 1623c66ac9dbSNicholas Bellinger 1624c66ac9dbSNicholas Bellinger 1625c66ac9dbSNicholas Bellinger void core_dev_release_virtual_lun0(void) 1626c66ac9dbSNicholas Bellinger { 1627e3d6f909SAndy Grover struct se_hba *hba = lun0_hba; 1628e3d6f909SAndy Grover struct se_subsystem_dev *su_dev = lun0_su_dev; 1629c66ac9dbSNicholas Bellinger 1630c66ac9dbSNicholas Bellinger if (!(hba)) 1631c66ac9dbSNicholas Bellinger return; 1632c66ac9dbSNicholas Bellinger 1633e3d6f909SAndy Grover if (g_lun0_dev) 1634e3d6f909SAndy Grover se_free_virtual_device(g_lun0_dev, hba); 1635c66ac9dbSNicholas Bellinger 1636c66ac9dbSNicholas Bellinger kfree(su_dev); 1637c66ac9dbSNicholas Bellinger core_delete_hba(hba); 1638c66ac9dbSNicholas Bellinger } 1639