1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_device.c (based on iscsi_target_device.c) 3c66ac9dbSNicholas Bellinger * 4c66ac9dbSNicholas Bellinger * This file contains the iSCSI 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/smp_lock.h> 37c66ac9dbSNicholas Bellinger #include <linux/kthread.h> 38c66ac9dbSNicholas Bellinger #include <linux/in.h> 39c66ac9dbSNicholas Bellinger #include <net/sock.h> 40c66ac9dbSNicholas Bellinger #include <net/tcp.h> 41c66ac9dbSNicholas Bellinger #include <scsi/scsi.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 57c66ac9dbSNicholas Bellinger int transport_get_lun_for_cmd( 58c66ac9dbSNicholas Bellinger struct se_cmd *se_cmd, 59c66ac9dbSNicholas Bellinger unsigned char *cdb, 60c66ac9dbSNicholas Bellinger u32 unpacked_lun) 61c66ac9dbSNicholas Bellinger { 62c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 63c66ac9dbSNicholas Bellinger struct se_lun *se_lun = NULL; 64c66ac9dbSNicholas Bellinger struct se_session *se_sess = SE_SESS(se_cmd); 65c66ac9dbSNicholas Bellinger unsigned long flags; 66c66ac9dbSNicholas Bellinger int read_only = 0; 67c66ac9dbSNicholas Bellinger 68c66ac9dbSNicholas Bellinger spin_lock_irq(&SE_NODE_ACL(se_sess)->device_list_lock); 69c66ac9dbSNicholas Bellinger deve = se_cmd->se_deve = 70c66ac9dbSNicholas Bellinger &SE_NODE_ACL(se_sess)->device_list[unpacked_lun]; 71c66ac9dbSNicholas Bellinger if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { 72c66ac9dbSNicholas Bellinger if (se_cmd) { 73c66ac9dbSNicholas Bellinger deve->total_cmds++; 74c66ac9dbSNicholas Bellinger deve->total_bytes += se_cmd->data_length; 75c66ac9dbSNicholas Bellinger 76c66ac9dbSNicholas Bellinger if (se_cmd->data_direction == DMA_TO_DEVICE) { 77c66ac9dbSNicholas Bellinger if (deve->lun_flags & 78c66ac9dbSNicholas Bellinger TRANSPORT_LUNFLAGS_READ_ONLY) { 79c66ac9dbSNicholas Bellinger read_only = 1; 80c66ac9dbSNicholas Bellinger goto out; 81c66ac9dbSNicholas Bellinger } 82c66ac9dbSNicholas Bellinger deve->write_bytes += se_cmd->data_length; 83c66ac9dbSNicholas Bellinger } else if (se_cmd->data_direction == 84c66ac9dbSNicholas Bellinger DMA_FROM_DEVICE) { 85c66ac9dbSNicholas Bellinger deve->read_bytes += se_cmd->data_length; 86c66ac9dbSNicholas Bellinger } 87c66ac9dbSNicholas Bellinger } 88c66ac9dbSNicholas Bellinger deve->deve_cmds++; 89c66ac9dbSNicholas Bellinger 90c66ac9dbSNicholas Bellinger se_lun = se_cmd->se_lun = deve->se_lun; 91c66ac9dbSNicholas Bellinger se_cmd->pr_res_key = deve->pr_res_key; 92c66ac9dbSNicholas Bellinger se_cmd->orig_fe_lun = unpacked_lun; 93c66ac9dbSNicholas Bellinger se_cmd->se_orig_obj_ptr = SE_LUN(se_cmd)->lun_se_dev; 94c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; 95c66ac9dbSNicholas Bellinger } 96c66ac9dbSNicholas Bellinger out: 97c66ac9dbSNicholas Bellinger spin_unlock_irq(&SE_NODE_ACL(se_sess)->device_list_lock); 98c66ac9dbSNicholas Bellinger 99c66ac9dbSNicholas Bellinger if (!se_lun) { 100c66ac9dbSNicholas Bellinger if (read_only) { 101c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; 102c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 103c66ac9dbSNicholas Bellinger printk("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" 104c66ac9dbSNicholas Bellinger " Access for 0x%08x\n", 105c66ac9dbSNicholas Bellinger CMD_TFO(se_cmd)->get_fabric_name(), 106c66ac9dbSNicholas Bellinger unpacked_lun); 107c66ac9dbSNicholas Bellinger return -1; 108c66ac9dbSNicholas Bellinger } else { 109c66ac9dbSNicholas Bellinger /* 110c66ac9dbSNicholas Bellinger * Use the se_portal_group->tpg_virt_lun0 to allow for 111c66ac9dbSNicholas Bellinger * REPORT_LUNS, et al to be returned when no active 112c66ac9dbSNicholas Bellinger * MappedLUN=0 exists for this Initiator Port. 113c66ac9dbSNicholas Bellinger */ 114c66ac9dbSNicholas Bellinger if (unpacked_lun != 0) { 115c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN; 116c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 117c66ac9dbSNicholas Bellinger printk("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" 118c66ac9dbSNicholas Bellinger " Access for 0x%08x\n", 119c66ac9dbSNicholas Bellinger CMD_TFO(se_cmd)->get_fabric_name(), 120c66ac9dbSNicholas Bellinger unpacked_lun); 121c66ac9dbSNicholas Bellinger return -1; 122c66ac9dbSNicholas Bellinger } 123c66ac9dbSNicholas Bellinger /* 124c66ac9dbSNicholas Bellinger * Force WRITE PROTECT for virtual LUN 0 125c66ac9dbSNicholas Bellinger */ 126c66ac9dbSNicholas Bellinger if ((se_cmd->data_direction != DMA_FROM_DEVICE) && 127c66ac9dbSNicholas Bellinger (se_cmd->data_direction != DMA_NONE)) { 128c66ac9dbSNicholas Bellinger se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED; 129c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 130c66ac9dbSNicholas Bellinger return -1; 131c66ac9dbSNicholas Bellinger } 132c66ac9dbSNicholas Bellinger #if 0 133c66ac9dbSNicholas Bellinger printk("TARGET_CORE[%s]: Using virtual LUN0! :-)\n", 134c66ac9dbSNicholas Bellinger CMD_TFO(se_cmd)->get_fabric_name()); 135c66ac9dbSNicholas Bellinger #endif 136c66ac9dbSNicholas Bellinger se_lun = se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; 137c66ac9dbSNicholas Bellinger se_cmd->orig_fe_lun = 0; 138c66ac9dbSNicholas Bellinger se_cmd->se_orig_obj_ptr = SE_LUN(se_cmd)->lun_se_dev; 139c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; 140c66ac9dbSNicholas Bellinger } 141c66ac9dbSNicholas Bellinger } 142c66ac9dbSNicholas Bellinger /* 143c66ac9dbSNicholas Bellinger * Determine if the struct se_lun is online. 144c66ac9dbSNicholas Bellinger */ 145c66ac9dbSNicholas Bellinger /* #warning FIXME: Check for LUN_RESET + UNIT Attention */ 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; 149c66ac9dbSNicholas Bellinger return -1; 150c66ac9dbSNicholas Bellinger } 151c66ac9dbSNicholas Bellinger 152c66ac9dbSNicholas Bellinger { 153c66ac9dbSNicholas Bellinger struct se_device *dev = se_lun->lun_se_dev; 154c66ac9dbSNicholas Bellinger spin_lock(&dev->stats_lock); 155c66ac9dbSNicholas Bellinger dev->num_cmds++; 156c66ac9dbSNicholas Bellinger if (se_cmd->data_direction == DMA_TO_DEVICE) 157c66ac9dbSNicholas Bellinger dev->write_bytes += se_cmd->data_length; 158c66ac9dbSNicholas Bellinger else if (se_cmd->data_direction == DMA_FROM_DEVICE) 159c66ac9dbSNicholas Bellinger dev->read_bytes += se_cmd->data_length; 160c66ac9dbSNicholas Bellinger spin_unlock(&dev->stats_lock); 161c66ac9dbSNicholas Bellinger } 162c66ac9dbSNicholas Bellinger 163c66ac9dbSNicholas Bellinger /* 164c66ac9dbSNicholas Bellinger * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used 165c66ac9dbSNicholas Bellinger * for tracking state of struct se_cmds during LUN shutdown events. 166c66ac9dbSNicholas Bellinger */ 167c66ac9dbSNicholas Bellinger spin_lock_irqsave(&se_lun->lun_cmd_lock, flags); 168c66ac9dbSNicholas Bellinger list_add_tail(&se_cmd->se_lun_list, &se_lun->lun_cmd_list); 169c66ac9dbSNicholas Bellinger atomic_set(&T_TASK(se_cmd)->transport_lun_active, 1); 170c66ac9dbSNicholas Bellinger #if 0 171c66ac9dbSNicholas Bellinger printk(KERN_INFO "Adding ITT: 0x%08x to LUN LIST[%d]\n", 172c66ac9dbSNicholas Bellinger CMD_TFO(se_cmd)->get_task_tag(se_cmd), se_lun->unpacked_lun); 173c66ac9dbSNicholas Bellinger #endif 174c66ac9dbSNicholas Bellinger spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags); 175c66ac9dbSNicholas Bellinger 176c66ac9dbSNicholas Bellinger return 0; 177c66ac9dbSNicholas Bellinger } 178c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(transport_get_lun_for_cmd); 179c66ac9dbSNicholas Bellinger 180c66ac9dbSNicholas Bellinger int transport_get_lun_for_tmr( 181c66ac9dbSNicholas Bellinger struct se_cmd *se_cmd, 182c66ac9dbSNicholas Bellinger u32 unpacked_lun) 183c66ac9dbSNicholas Bellinger { 184c66ac9dbSNicholas Bellinger struct se_device *dev = NULL; 185c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 186c66ac9dbSNicholas Bellinger struct se_lun *se_lun = NULL; 187c66ac9dbSNicholas Bellinger struct se_session *se_sess = SE_SESS(se_cmd); 188c66ac9dbSNicholas Bellinger struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 189c66ac9dbSNicholas Bellinger 190c66ac9dbSNicholas Bellinger spin_lock_irq(&SE_NODE_ACL(se_sess)->device_list_lock); 191c66ac9dbSNicholas Bellinger deve = se_cmd->se_deve = 192c66ac9dbSNicholas Bellinger &SE_NODE_ACL(se_sess)->device_list[unpacked_lun]; 193c66ac9dbSNicholas Bellinger if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { 194c66ac9dbSNicholas Bellinger se_lun = se_cmd->se_lun = se_tmr->tmr_lun = deve->se_lun; 195c66ac9dbSNicholas Bellinger dev = se_tmr->tmr_dev = se_lun->lun_se_dev; 196c66ac9dbSNicholas Bellinger se_cmd->pr_res_key = deve->pr_res_key; 197c66ac9dbSNicholas Bellinger se_cmd->orig_fe_lun = unpacked_lun; 198c66ac9dbSNicholas Bellinger se_cmd->se_orig_obj_ptr = SE_LUN(se_cmd)->lun_se_dev; 199c66ac9dbSNicholas Bellinger /* se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; */ 200c66ac9dbSNicholas Bellinger } 201c66ac9dbSNicholas Bellinger spin_unlock_irq(&SE_NODE_ACL(se_sess)->device_list_lock); 202c66ac9dbSNicholas Bellinger 203c66ac9dbSNicholas Bellinger if (!se_lun) { 204c66ac9dbSNicholas Bellinger printk(KERN_INFO "TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" 205c66ac9dbSNicholas Bellinger " Access for 0x%08x\n", 206c66ac9dbSNicholas Bellinger CMD_TFO(se_cmd)->get_fabric_name(), 207c66ac9dbSNicholas Bellinger unpacked_lun); 208c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 209c66ac9dbSNicholas Bellinger return -1; 210c66ac9dbSNicholas Bellinger } 211c66ac9dbSNicholas Bellinger /* 212c66ac9dbSNicholas Bellinger * Determine if the struct se_lun is online. 213c66ac9dbSNicholas Bellinger */ 214c66ac9dbSNicholas Bellinger /* #warning FIXME: Check for LUN_RESET + UNIT Attention */ 215c66ac9dbSNicholas Bellinger if (se_dev_check_online(se_lun->lun_se_dev) != 0) { 216c66ac9dbSNicholas Bellinger se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; 217c66ac9dbSNicholas Bellinger return -1; 218c66ac9dbSNicholas Bellinger } 219c66ac9dbSNicholas Bellinger 220c66ac9dbSNicholas Bellinger spin_lock(&dev->se_tmr_lock); 221c66ac9dbSNicholas Bellinger list_add_tail(&se_tmr->tmr_list, &dev->dev_tmr_list); 222c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_tmr_lock); 223c66ac9dbSNicholas Bellinger 224c66ac9dbSNicholas Bellinger return 0; 225c66ac9dbSNicholas Bellinger } 226c66ac9dbSNicholas Bellinger EXPORT_SYMBOL(transport_get_lun_for_tmr); 227c66ac9dbSNicholas Bellinger 228c66ac9dbSNicholas Bellinger /* 229c66ac9dbSNicholas Bellinger * This function is called from core_scsi3_emulate_pro_register_and_move() 230c66ac9dbSNicholas Bellinger * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count 231c66ac9dbSNicholas Bellinger * when a matching rtpi is found. 232c66ac9dbSNicholas Bellinger */ 233c66ac9dbSNicholas Bellinger struct se_dev_entry *core_get_se_deve_from_rtpi( 234c66ac9dbSNicholas Bellinger struct se_node_acl *nacl, 235c66ac9dbSNicholas Bellinger u16 rtpi) 236c66ac9dbSNicholas Bellinger { 237c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 238c66ac9dbSNicholas Bellinger struct se_lun *lun; 239c66ac9dbSNicholas Bellinger struct se_port *port; 240c66ac9dbSNicholas Bellinger struct se_portal_group *tpg = nacl->se_tpg; 241c66ac9dbSNicholas Bellinger u32 i; 242c66ac9dbSNicholas Bellinger 243c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 244c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 245c66ac9dbSNicholas Bellinger deve = &nacl->device_list[i]; 246c66ac9dbSNicholas Bellinger 247c66ac9dbSNicholas Bellinger if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 248c66ac9dbSNicholas Bellinger continue; 249c66ac9dbSNicholas Bellinger 250c66ac9dbSNicholas Bellinger lun = deve->se_lun; 251c66ac9dbSNicholas Bellinger if (!(lun)) { 252c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s device entries device pointer is" 253c66ac9dbSNicholas Bellinger " NULL, but Initiator has access.\n", 254c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name()); 255c66ac9dbSNicholas Bellinger continue; 256c66ac9dbSNicholas Bellinger } 257c66ac9dbSNicholas Bellinger port = lun->lun_sep; 258c66ac9dbSNicholas Bellinger if (!(port)) { 259c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s device entries device pointer is" 260c66ac9dbSNicholas Bellinger " NULL, but Initiator has access.\n", 261c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name()); 262c66ac9dbSNicholas Bellinger continue; 263c66ac9dbSNicholas Bellinger } 264c66ac9dbSNicholas Bellinger if (port->sep_rtpi != rtpi) 265c66ac9dbSNicholas Bellinger continue; 266c66ac9dbSNicholas Bellinger 267c66ac9dbSNicholas Bellinger atomic_inc(&deve->pr_ref_count); 268c66ac9dbSNicholas Bellinger smp_mb__after_atomic_inc(); 269c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 270c66ac9dbSNicholas Bellinger 271c66ac9dbSNicholas Bellinger return deve; 272c66ac9dbSNicholas Bellinger } 273c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 274c66ac9dbSNicholas Bellinger 275c66ac9dbSNicholas Bellinger return NULL; 276c66ac9dbSNicholas Bellinger } 277c66ac9dbSNicholas Bellinger 278c66ac9dbSNicholas Bellinger int core_free_device_list_for_node( 279c66ac9dbSNicholas Bellinger struct se_node_acl *nacl, 280c66ac9dbSNicholas Bellinger struct se_portal_group *tpg) 281c66ac9dbSNicholas Bellinger { 282c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 283c66ac9dbSNicholas Bellinger struct se_lun *lun; 284c66ac9dbSNicholas Bellinger u32 i; 285c66ac9dbSNicholas Bellinger 286c66ac9dbSNicholas Bellinger if (!nacl->device_list) 287c66ac9dbSNicholas Bellinger return 0; 288c66ac9dbSNicholas Bellinger 289c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 290c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 291c66ac9dbSNicholas Bellinger deve = &nacl->device_list[i]; 292c66ac9dbSNicholas Bellinger 293c66ac9dbSNicholas Bellinger if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 294c66ac9dbSNicholas Bellinger continue; 295c66ac9dbSNicholas Bellinger 296c66ac9dbSNicholas Bellinger if (!deve->se_lun) { 297c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s device entries device pointer is" 298c66ac9dbSNicholas Bellinger " NULL, but Initiator has access.\n", 299c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name()); 300c66ac9dbSNicholas Bellinger continue; 301c66ac9dbSNicholas Bellinger } 302c66ac9dbSNicholas Bellinger lun = deve->se_lun; 303c66ac9dbSNicholas Bellinger 304c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 305c66ac9dbSNicholas Bellinger core_update_device_list_for_node(lun, NULL, deve->mapped_lun, 306c66ac9dbSNicholas Bellinger TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); 307c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 308c66ac9dbSNicholas Bellinger } 309c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 310c66ac9dbSNicholas Bellinger 311c66ac9dbSNicholas Bellinger kfree(nacl->device_list); 312c66ac9dbSNicholas Bellinger nacl->device_list = NULL; 313c66ac9dbSNicholas Bellinger 314c66ac9dbSNicholas Bellinger return 0; 315c66ac9dbSNicholas Bellinger } 316c66ac9dbSNicholas Bellinger 317c66ac9dbSNicholas Bellinger void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd) 318c66ac9dbSNicholas Bellinger { 319c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 320c66ac9dbSNicholas Bellinger 321c66ac9dbSNicholas Bellinger spin_lock_irq(&se_nacl->device_list_lock); 322c66ac9dbSNicholas Bellinger deve = &se_nacl->device_list[se_cmd->orig_fe_lun]; 323c66ac9dbSNicholas Bellinger deve->deve_cmds--; 324c66ac9dbSNicholas Bellinger spin_unlock_irq(&se_nacl->device_list_lock); 325c66ac9dbSNicholas Bellinger 326c66ac9dbSNicholas Bellinger return; 327c66ac9dbSNicholas Bellinger } 328c66ac9dbSNicholas Bellinger 329c66ac9dbSNicholas Bellinger void core_update_device_list_access( 330c66ac9dbSNicholas Bellinger u32 mapped_lun, 331c66ac9dbSNicholas Bellinger u32 lun_access, 332c66ac9dbSNicholas Bellinger struct se_node_acl *nacl) 333c66ac9dbSNicholas Bellinger { 334c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 335c66ac9dbSNicholas Bellinger 336c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 337c66ac9dbSNicholas Bellinger deve = &nacl->device_list[mapped_lun]; 338c66ac9dbSNicholas Bellinger if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { 339c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; 340c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; 341c66ac9dbSNicholas Bellinger } else { 342c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; 343c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; 344c66ac9dbSNicholas Bellinger } 345c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 346c66ac9dbSNicholas Bellinger 347c66ac9dbSNicholas Bellinger return; 348c66ac9dbSNicholas Bellinger } 349c66ac9dbSNicholas Bellinger 350c66ac9dbSNicholas Bellinger /* core_update_device_list_for_node(): 351c66ac9dbSNicholas Bellinger * 352c66ac9dbSNicholas Bellinger * 353c66ac9dbSNicholas Bellinger */ 354c66ac9dbSNicholas Bellinger int core_update_device_list_for_node( 355c66ac9dbSNicholas Bellinger struct se_lun *lun, 356c66ac9dbSNicholas Bellinger struct se_lun_acl *lun_acl, 357c66ac9dbSNicholas Bellinger u32 mapped_lun, 358c66ac9dbSNicholas Bellinger u32 lun_access, 359c66ac9dbSNicholas Bellinger struct se_node_acl *nacl, 360c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 361c66ac9dbSNicholas Bellinger int enable) 362c66ac9dbSNicholas Bellinger { 363c66ac9dbSNicholas Bellinger struct se_port *port = lun->lun_sep; 364c66ac9dbSNicholas Bellinger struct se_dev_entry *deve = &nacl->device_list[mapped_lun]; 365c66ac9dbSNicholas Bellinger int trans = 0; 366c66ac9dbSNicholas Bellinger /* 367c66ac9dbSNicholas Bellinger * If the MappedLUN entry is being disabled, the entry in 368c66ac9dbSNicholas Bellinger * port->sep_alua_list must be removed now before clearing the 369c66ac9dbSNicholas Bellinger * struct se_dev_entry pointers below as logic in 370c66ac9dbSNicholas Bellinger * core_alua_do_transition_tg_pt() depends on these being present. 371c66ac9dbSNicholas Bellinger */ 372c66ac9dbSNicholas Bellinger if (!(enable)) { 373c66ac9dbSNicholas Bellinger /* 374c66ac9dbSNicholas Bellinger * deve->se_lun_acl will be NULL for demo-mode created LUNs 375c66ac9dbSNicholas Bellinger * that have not been explictly concerted to MappedLUNs -> 376c66ac9dbSNicholas Bellinger * struct se_lun_acl. 377c66ac9dbSNicholas Bellinger */ 378c66ac9dbSNicholas Bellinger if (!(deve->se_lun_acl)) 379c66ac9dbSNicholas Bellinger return 0; 380c66ac9dbSNicholas Bellinger 381c66ac9dbSNicholas Bellinger spin_lock_bh(&port->sep_alua_lock); 382c66ac9dbSNicholas Bellinger list_del(&deve->alua_port_list); 383c66ac9dbSNicholas Bellinger spin_unlock_bh(&port->sep_alua_lock); 384c66ac9dbSNicholas Bellinger } 385c66ac9dbSNicholas Bellinger 386c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 387c66ac9dbSNicholas Bellinger if (enable) { 388c66ac9dbSNicholas Bellinger /* 389c66ac9dbSNicholas Bellinger * Check if the call is handling demo mode -> explict LUN ACL 390c66ac9dbSNicholas Bellinger * transition. This transition must be for the same struct se_lun 391c66ac9dbSNicholas Bellinger * + mapped_lun that was setup in demo mode.. 392c66ac9dbSNicholas Bellinger */ 393c66ac9dbSNicholas Bellinger if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) { 394c66ac9dbSNicholas Bellinger if (deve->se_lun_acl != NULL) { 395c66ac9dbSNicholas Bellinger printk(KERN_ERR "struct se_dev_entry->se_lun_acl" 396c66ac9dbSNicholas Bellinger " already set for demo mode -> explict" 397c66ac9dbSNicholas Bellinger " LUN ACL transition\n"); 398c66ac9dbSNicholas Bellinger return -1; 399c66ac9dbSNicholas Bellinger } 400c66ac9dbSNicholas Bellinger if (deve->se_lun != lun) { 401c66ac9dbSNicholas Bellinger printk(KERN_ERR "struct se_dev_entry->se_lun does" 402c66ac9dbSNicholas Bellinger " match passed struct se_lun for demo mode" 403c66ac9dbSNicholas Bellinger " -> explict LUN ACL transition\n"); 404c66ac9dbSNicholas Bellinger return -1; 405c66ac9dbSNicholas Bellinger } 406c66ac9dbSNicholas Bellinger deve->se_lun_acl = lun_acl; 407c66ac9dbSNicholas Bellinger trans = 1; 408c66ac9dbSNicholas Bellinger } else { 409c66ac9dbSNicholas Bellinger deve->se_lun = lun; 410c66ac9dbSNicholas Bellinger deve->se_lun_acl = lun_acl; 411c66ac9dbSNicholas Bellinger deve->mapped_lun = mapped_lun; 412c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS; 413c66ac9dbSNicholas Bellinger } 414c66ac9dbSNicholas Bellinger 415c66ac9dbSNicholas Bellinger if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) { 416c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY; 417c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE; 418c66ac9dbSNicholas Bellinger } else { 419c66ac9dbSNicholas Bellinger deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE; 420c66ac9dbSNicholas Bellinger deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY; 421c66ac9dbSNicholas Bellinger } 422c66ac9dbSNicholas Bellinger 423c66ac9dbSNicholas Bellinger if (trans) { 424c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 425c66ac9dbSNicholas Bellinger return 0; 426c66ac9dbSNicholas Bellinger } 427c66ac9dbSNicholas Bellinger deve->creation_time = get_jiffies_64(); 428c66ac9dbSNicholas Bellinger deve->attach_count++; 429c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 430c66ac9dbSNicholas Bellinger 431c66ac9dbSNicholas Bellinger spin_lock_bh(&port->sep_alua_lock); 432c66ac9dbSNicholas Bellinger list_add_tail(&deve->alua_port_list, &port->sep_alua_list); 433c66ac9dbSNicholas Bellinger spin_unlock_bh(&port->sep_alua_lock); 434c66ac9dbSNicholas Bellinger 435c66ac9dbSNicholas Bellinger return 0; 436c66ac9dbSNicholas Bellinger } 437c66ac9dbSNicholas Bellinger /* 438c66ac9dbSNicholas Bellinger * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE 439c66ac9dbSNicholas Bellinger * PR operation to complete. 440c66ac9dbSNicholas Bellinger */ 441c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 442c66ac9dbSNicholas Bellinger while (atomic_read(&deve->pr_ref_count) != 0) 443c66ac9dbSNicholas Bellinger cpu_relax(); 444c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 445c66ac9dbSNicholas Bellinger /* 446c66ac9dbSNicholas Bellinger * Disable struct se_dev_entry LUN ACL mapping 447c66ac9dbSNicholas Bellinger */ 448c66ac9dbSNicholas Bellinger core_scsi3_ua_release_all(deve); 449c66ac9dbSNicholas Bellinger deve->se_lun = NULL; 450c66ac9dbSNicholas Bellinger deve->se_lun_acl = NULL; 451c66ac9dbSNicholas Bellinger deve->lun_flags = 0; 452c66ac9dbSNicholas Bellinger deve->creation_time = 0; 453c66ac9dbSNicholas Bellinger deve->attach_count--; 454c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 455c66ac9dbSNicholas Bellinger 456c66ac9dbSNicholas Bellinger core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl); 457c66ac9dbSNicholas Bellinger return 0; 458c66ac9dbSNicholas Bellinger } 459c66ac9dbSNicholas Bellinger 460c66ac9dbSNicholas Bellinger /* core_clear_lun_from_tpg(): 461c66ac9dbSNicholas Bellinger * 462c66ac9dbSNicholas Bellinger * 463c66ac9dbSNicholas Bellinger */ 464c66ac9dbSNicholas Bellinger void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) 465c66ac9dbSNicholas Bellinger { 466c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 467c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 468c66ac9dbSNicholas Bellinger u32 i; 469c66ac9dbSNicholas Bellinger 470c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 471c66ac9dbSNicholas Bellinger list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) { 472c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 473c66ac9dbSNicholas Bellinger 474c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 475c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 476c66ac9dbSNicholas Bellinger deve = &nacl->device_list[i]; 477c66ac9dbSNicholas Bellinger if (lun != deve->se_lun) 478c66ac9dbSNicholas Bellinger continue; 479c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 480c66ac9dbSNicholas Bellinger 481c66ac9dbSNicholas Bellinger core_update_device_list_for_node(lun, NULL, 482c66ac9dbSNicholas Bellinger deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, 483c66ac9dbSNicholas Bellinger nacl, tpg, 0); 484c66ac9dbSNicholas Bellinger 485c66ac9dbSNicholas Bellinger spin_lock_irq(&nacl->device_list_lock); 486c66ac9dbSNicholas Bellinger } 487c66ac9dbSNicholas Bellinger spin_unlock_irq(&nacl->device_list_lock); 488c66ac9dbSNicholas Bellinger 489c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 490c66ac9dbSNicholas Bellinger } 491c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 492c66ac9dbSNicholas Bellinger 493c66ac9dbSNicholas Bellinger return; 494c66ac9dbSNicholas Bellinger } 495c66ac9dbSNicholas Bellinger 496c66ac9dbSNicholas Bellinger static struct se_port *core_alloc_port(struct se_device *dev) 497c66ac9dbSNicholas Bellinger { 498c66ac9dbSNicholas Bellinger struct se_port *port, *port_tmp; 499c66ac9dbSNicholas Bellinger 500c66ac9dbSNicholas Bellinger port = kzalloc(sizeof(struct se_port), GFP_KERNEL); 501c66ac9dbSNicholas Bellinger if (!(port)) { 502c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate struct se_port\n"); 503c66ac9dbSNicholas Bellinger return NULL; 504c66ac9dbSNicholas Bellinger } 505c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&port->sep_alua_list); 506c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&port->sep_list); 507c66ac9dbSNicholas Bellinger atomic_set(&port->sep_tg_pt_secondary_offline, 0); 508c66ac9dbSNicholas Bellinger spin_lock_init(&port->sep_alua_lock); 509c66ac9dbSNicholas Bellinger mutex_init(&port->sep_tg_pt_md_mutex); 510c66ac9dbSNicholas Bellinger 511c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 512c66ac9dbSNicholas Bellinger if (dev->dev_port_count == 0x0000ffff) { 513c66ac9dbSNicholas Bellinger printk(KERN_WARNING "Reached dev->dev_port_count ==" 514c66ac9dbSNicholas Bellinger " 0x0000ffff\n"); 515c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 516c66ac9dbSNicholas Bellinger return NULL; 517c66ac9dbSNicholas Bellinger } 518c66ac9dbSNicholas Bellinger again: 519c66ac9dbSNicholas Bellinger /* 520c66ac9dbSNicholas Bellinger * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device 521c66ac9dbSNicholas Bellinger * Here is the table from spc4r17 section 7.7.3.8. 522c66ac9dbSNicholas Bellinger * 523c66ac9dbSNicholas Bellinger * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field 524c66ac9dbSNicholas Bellinger * 525c66ac9dbSNicholas Bellinger * Code Description 526c66ac9dbSNicholas Bellinger * 0h Reserved 527c66ac9dbSNicholas Bellinger * 1h Relative port 1, historically known as port A 528c66ac9dbSNicholas Bellinger * 2h Relative port 2, historically known as port B 529c66ac9dbSNicholas Bellinger * 3h to FFFFh Relative port 3 through 65 535 530c66ac9dbSNicholas Bellinger */ 531c66ac9dbSNicholas Bellinger port->sep_rtpi = dev->dev_rpti_counter++; 532c66ac9dbSNicholas Bellinger if (!(port->sep_rtpi)) 533c66ac9dbSNicholas Bellinger goto again; 534c66ac9dbSNicholas Bellinger 535c66ac9dbSNicholas Bellinger list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { 536c66ac9dbSNicholas Bellinger /* 537c66ac9dbSNicholas Bellinger * Make sure RELATIVE TARGET PORT IDENTIFER is unique 538c66ac9dbSNicholas Bellinger * for 16-bit wrap.. 539c66ac9dbSNicholas Bellinger */ 540c66ac9dbSNicholas Bellinger if (port->sep_rtpi == port_tmp->sep_rtpi) 541c66ac9dbSNicholas Bellinger goto again; 542c66ac9dbSNicholas Bellinger } 543c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 544c66ac9dbSNicholas Bellinger 545c66ac9dbSNicholas Bellinger return port; 546c66ac9dbSNicholas Bellinger } 547c66ac9dbSNicholas Bellinger 548c66ac9dbSNicholas Bellinger static void core_export_port( 549c66ac9dbSNicholas Bellinger struct se_device *dev, 550c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 551c66ac9dbSNicholas Bellinger struct se_port *port, 552c66ac9dbSNicholas Bellinger struct se_lun *lun) 553c66ac9dbSNicholas Bellinger { 554c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev = SU_DEV(dev); 555c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; 556c66ac9dbSNicholas Bellinger 557c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 558c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_sep_lock); 559c66ac9dbSNicholas Bellinger port->sep_tpg = tpg; 560c66ac9dbSNicholas Bellinger port->sep_lun = lun; 561c66ac9dbSNicholas Bellinger lun->lun_sep = port; 562c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 563c66ac9dbSNicholas Bellinger 564c66ac9dbSNicholas Bellinger list_add_tail(&port->sep_list, &dev->dev_sep_list); 565c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 566c66ac9dbSNicholas Bellinger 567c66ac9dbSNicholas Bellinger if (T10_ALUA(su_dev)->alua_type == SPC3_ALUA_EMULATED) { 568c66ac9dbSNicholas Bellinger tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); 569c66ac9dbSNicholas Bellinger if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { 570c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate t10_alua_tg_pt" 571c66ac9dbSNicholas Bellinger "_gp_member_t\n"); 572c66ac9dbSNicholas Bellinger return; 573c66ac9dbSNicholas Bellinger } 574c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 575c66ac9dbSNicholas Bellinger __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, 576c66ac9dbSNicholas Bellinger T10_ALUA(su_dev)->default_tg_pt_gp); 577c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); 578c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s/%s: Adding to default ALUA Target Port" 579c66ac9dbSNicholas Bellinger " Group: alua/default_tg_pt_gp\n", 580c66ac9dbSNicholas Bellinger TRANSPORT(dev)->name, TPG_TFO(tpg)->get_fabric_name()); 581c66ac9dbSNicholas Bellinger } 582c66ac9dbSNicholas Bellinger 583c66ac9dbSNicholas Bellinger dev->dev_port_count++; 584c66ac9dbSNicholas Bellinger port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */ 585c66ac9dbSNicholas Bellinger } 586c66ac9dbSNicholas Bellinger 587c66ac9dbSNicholas Bellinger /* 588c66ac9dbSNicholas Bellinger * Called with struct se_device->se_port_lock spinlock held. 589c66ac9dbSNicholas Bellinger */ 590c66ac9dbSNicholas Bellinger static void core_release_port(struct se_device *dev, struct se_port *port) 591c66ac9dbSNicholas Bellinger { 592c66ac9dbSNicholas Bellinger /* 593c66ac9dbSNicholas Bellinger * Wait for any port reference for PR ALL_TG_PT=1 operation 594c66ac9dbSNicholas Bellinger * to complete in __core_scsi3_alloc_registration() 595c66ac9dbSNicholas Bellinger */ 596c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 597c66ac9dbSNicholas Bellinger if (atomic_read(&port->sep_tg_pt_ref_cnt)) 598c66ac9dbSNicholas Bellinger cpu_relax(); 599c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 600c66ac9dbSNicholas Bellinger 601c66ac9dbSNicholas Bellinger core_alua_free_tg_pt_gp_mem(port); 602c66ac9dbSNicholas Bellinger 603c66ac9dbSNicholas Bellinger list_del(&port->sep_list); 604c66ac9dbSNicholas Bellinger dev->dev_port_count--; 605c66ac9dbSNicholas Bellinger kfree(port); 606c66ac9dbSNicholas Bellinger 607c66ac9dbSNicholas Bellinger return; 608c66ac9dbSNicholas Bellinger } 609c66ac9dbSNicholas Bellinger 610c66ac9dbSNicholas Bellinger int core_dev_export( 611c66ac9dbSNicholas Bellinger struct se_device *dev, 612c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 613c66ac9dbSNicholas Bellinger struct se_lun *lun) 614c66ac9dbSNicholas Bellinger { 615c66ac9dbSNicholas Bellinger struct se_port *port; 616c66ac9dbSNicholas Bellinger 617c66ac9dbSNicholas Bellinger port = core_alloc_port(dev); 618c66ac9dbSNicholas Bellinger if (!(port)) 619c66ac9dbSNicholas Bellinger return -1; 620c66ac9dbSNicholas Bellinger 621c66ac9dbSNicholas Bellinger lun->lun_se_dev = dev; 622c66ac9dbSNicholas Bellinger se_dev_start(dev); 623c66ac9dbSNicholas Bellinger 624c66ac9dbSNicholas Bellinger atomic_inc(&dev->dev_export_obj.obj_access_count); 625c66ac9dbSNicholas Bellinger core_export_port(dev, tpg, port, lun); 626c66ac9dbSNicholas Bellinger return 0; 627c66ac9dbSNicholas Bellinger } 628c66ac9dbSNicholas Bellinger 629c66ac9dbSNicholas Bellinger void core_dev_unexport( 630c66ac9dbSNicholas Bellinger struct se_device *dev, 631c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 632c66ac9dbSNicholas Bellinger struct se_lun *lun) 633c66ac9dbSNicholas Bellinger { 634c66ac9dbSNicholas Bellinger struct se_port *port = lun->lun_sep; 635c66ac9dbSNicholas Bellinger 636c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_sep_lock); 637c66ac9dbSNicholas Bellinger if (lun->lun_se_dev == NULL) { 638c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 639c66ac9dbSNicholas Bellinger return; 640c66ac9dbSNicholas Bellinger } 641c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 642c66ac9dbSNicholas Bellinger 643c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 644c66ac9dbSNicholas Bellinger atomic_dec(&dev->dev_export_obj.obj_access_count); 645c66ac9dbSNicholas Bellinger core_release_port(dev, port); 646c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 647c66ac9dbSNicholas Bellinger 648c66ac9dbSNicholas Bellinger se_dev_stop(dev); 649c66ac9dbSNicholas Bellinger lun->lun_se_dev = NULL; 650c66ac9dbSNicholas Bellinger } 651c66ac9dbSNicholas Bellinger 652c66ac9dbSNicholas Bellinger int transport_core_report_lun_response(struct se_cmd *se_cmd) 653c66ac9dbSNicholas Bellinger { 654c66ac9dbSNicholas Bellinger struct se_dev_entry *deve; 655c66ac9dbSNicholas Bellinger struct se_lun *se_lun; 656c66ac9dbSNicholas Bellinger struct se_session *se_sess = SE_SESS(se_cmd); 657c66ac9dbSNicholas Bellinger struct se_task *se_task; 658c66ac9dbSNicholas Bellinger unsigned char *buf = (unsigned char *)T_TASK(se_cmd)->t_task_buf; 659c66ac9dbSNicholas Bellinger u32 cdb_offset = 0, lun_count = 0, offset = 8; 660c66ac9dbSNicholas Bellinger u64 i, lun; 661c66ac9dbSNicholas Bellinger 662c66ac9dbSNicholas Bellinger list_for_each_entry(se_task, &T_TASK(se_cmd)->t_task_list, t_list) 663c66ac9dbSNicholas Bellinger break; 664c66ac9dbSNicholas Bellinger 665c66ac9dbSNicholas Bellinger if (!(se_task)) { 666c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to locate struct se_task for struct se_cmd\n"); 667c66ac9dbSNicholas Bellinger return PYX_TRANSPORT_LU_COMM_FAILURE; 668c66ac9dbSNicholas Bellinger } 669c66ac9dbSNicholas Bellinger 670c66ac9dbSNicholas Bellinger /* 671c66ac9dbSNicholas Bellinger * If no struct se_session pointer is present, this struct se_cmd is 672c66ac9dbSNicholas Bellinger * coming via a target_core_mod PASSTHROUGH op, and not through 673c66ac9dbSNicholas Bellinger * a $FABRIC_MOD. In that case, report LUN=0 only. 674c66ac9dbSNicholas Bellinger */ 675c66ac9dbSNicholas Bellinger if (!(se_sess)) { 676c66ac9dbSNicholas Bellinger lun = 0; 677c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 56) & 0xff); 678c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 48) & 0xff); 679c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 40) & 0xff); 680c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 32) & 0xff); 681c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 24) & 0xff); 682c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 16) & 0xff); 683c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 8) & 0xff); 684c66ac9dbSNicholas Bellinger buf[offset++] = (lun & 0xff); 685c66ac9dbSNicholas Bellinger lun_count = 1; 686c66ac9dbSNicholas Bellinger goto done; 687c66ac9dbSNicholas Bellinger } 688c66ac9dbSNicholas Bellinger 689c66ac9dbSNicholas Bellinger spin_lock_irq(&SE_NODE_ACL(se_sess)->device_list_lock); 690c66ac9dbSNicholas Bellinger for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { 691c66ac9dbSNicholas Bellinger deve = &SE_NODE_ACL(se_sess)->device_list[i]; 692c66ac9dbSNicholas Bellinger if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)) 693c66ac9dbSNicholas Bellinger continue; 694c66ac9dbSNicholas Bellinger se_lun = deve->se_lun; 695c66ac9dbSNicholas Bellinger /* 696c66ac9dbSNicholas Bellinger * We determine the correct LUN LIST LENGTH even once we 697c66ac9dbSNicholas Bellinger * have reached the initial allocation length. 698c66ac9dbSNicholas Bellinger * See SPC2-R20 7.19. 699c66ac9dbSNicholas Bellinger */ 700c66ac9dbSNicholas Bellinger lun_count++; 701c66ac9dbSNicholas Bellinger if ((cdb_offset + 8) >= se_cmd->data_length) 702c66ac9dbSNicholas Bellinger continue; 703c66ac9dbSNicholas Bellinger 704c66ac9dbSNicholas Bellinger lun = cpu_to_be64(CMD_TFO(se_cmd)->pack_lun(deve->mapped_lun)); 705c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 56) & 0xff); 706c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 48) & 0xff); 707c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 40) & 0xff); 708c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 32) & 0xff); 709c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 24) & 0xff); 710c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 16) & 0xff); 711c66ac9dbSNicholas Bellinger buf[offset++] = ((lun >> 8) & 0xff); 712c66ac9dbSNicholas Bellinger buf[offset++] = (lun & 0xff); 713c66ac9dbSNicholas Bellinger cdb_offset += 8; 714c66ac9dbSNicholas Bellinger } 715c66ac9dbSNicholas Bellinger spin_unlock_irq(&SE_NODE_ACL(se_sess)->device_list_lock); 716c66ac9dbSNicholas Bellinger 717c66ac9dbSNicholas Bellinger /* 718c66ac9dbSNicholas Bellinger * See SPC3 r07, page 159. 719c66ac9dbSNicholas Bellinger */ 720c66ac9dbSNicholas Bellinger done: 721c66ac9dbSNicholas Bellinger lun_count *= 8; 722c66ac9dbSNicholas Bellinger buf[0] = ((lun_count >> 24) & 0xff); 723c66ac9dbSNicholas Bellinger buf[1] = ((lun_count >> 16) & 0xff); 724c66ac9dbSNicholas Bellinger buf[2] = ((lun_count >> 8) & 0xff); 725c66ac9dbSNicholas Bellinger buf[3] = (lun_count & 0xff); 726c66ac9dbSNicholas Bellinger 727c66ac9dbSNicholas Bellinger return PYX_TRANSPORT_SENT_TO_TRANSPORT; 728c66ac9dbSNicholas Bellinger } 729c66ac9dbSNicholas Bellinger 730c66ac9dbSNicholas Bellinger /* se_release_device_for_hba(): 731c66ac9dbSNicholas Bellinger * 732c66ac9dbSNicholas Bellinger * 733c66ac9dbSNicholas Bellinger */ 734c66ac9dbSNicholas Bellinger void se_release_device_for_hba(struct se_device *dev) 735c66ac9dbSNicholas Bellinger { 736c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 737c66ac9dbSNicholas Bellinger 738c66ac9dbSNicholas Bellinger if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || 739c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) || 740c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) || 741c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) || 742c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED)) 743c66ac9dbSNicholas Bellinger se_dev_stop(dev); 744c66ac9dbSNicholas Bellinger 745c66ac9dbSNicholas Bellinger if (dev->dev_ptr) { 746c66ac9dbSNicholas Bellinger kthread_stop(dev->process_thread); 747c66ac9dbSNicholas Bellinger if (dev->transport->free_device) 748c66ac9dbSNicholas Bellinger dev->transport->free_device(dev->dev_ptr); 749c66ac9dbSNicholas Bellinger } 750c66ac9dbSNicholas Bellinger 751c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 752c66ac9dbSNicholas Bellinger list_del(&dev->dev_list); 753c66ac9dbSNicholas Bellinger hba->dev_count--; 754c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 755c66ac9dbSNicholas Bellinger 756c66ac9dbSNicholas Bellinger core_scsi3_free_all_registrations(dev); 757c66ac9dbSNicholas Bellinger se_release_vpd_for_dev(dev); 758c66ac9dbSNicholas Bellinger 759c66ac9dbSNicholas Bellinger kfree(dev->dev_status_queue_obj); 760c66ac9dbSNicholas Bellinger kfree(dev->dev_queue_obj); 761c66ac9dbSNicholas Bellinger kfree(dev); 762c66ac9dbSNicholas Bellinger 763c66ac9dbSNicholas Bellinger return; 764c66ac9dbSNicholas Bellinger } 765c66ac9dbSNicholas Bellinger 766c66ac9dbSNicholas Bellinger void se_release_vpd_for_dev(struct se_device *dev) 767c66ac9dbSNicholas Bellinger { 768c66ac9dbSNicholas Bellinger struct t10_vpd *vpd, *vpd_tmp; 769c66ac9dbSNicholas Bellinger 770c66ac9dbSNicholas Bellinger spin_lock(&DEV_T10_WWN(dev)->t10_vpd_lock); 771c66ac9dbSNicholas Bellinger list_for_each_entry_safe(vpd, vpd_tmp, 772c66ac9dbSNicholas Bellinger &DEV_T10_WWN(dev)->t10_vpd_list, vpd_list) { 773c66ac9dbSNicholas Bellinger list_del(&vpd->vpd_list); 774c66ac9dbSNicholas Bellinger kfree(vpd); 775c66ac9dbSNicholas Bellinger } 776c66ac9dbSNicholas Bellinger spin_unlock(&DEV_T10_WWN(dev)->t10_vpd_lock); 777c66ac9dbSNicholas Bellinger 778c66ac9dbSNicholas Bellinger return; 779c66ac9dbSNicholas Bellinger } 780c66ac9dbSNicholas Bellinger 781c66ac9dbSNicholas Bellinger /* 782c66ac9dbSNicholas Bellinger * Called with struct se_hba->device_lock held. 783c66ac9dbSNicholas Bellinger */ 784c66ac9dbSNicholas Bellinger void se_clear_dev_ports(struct se_device *dev) 785c66ac9dbSNicholas Bellinger { 786c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 787c66ac9dbSNicholas Bellinger struct se_lun *lun; 788c66ac9dbSNicholas Bellinger struct se_portal_group *tpg; 789c66ac9dbSNicholas Bellinger struct se_port *sep, *sep_tmp; 790c66ac9dbSNicholas Bellinger 791c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 792c66ac9dbSNicholas Bellinger list_for_each_entry_safe(sep, sep_tmp, &dev->dev_sep_list, sep_list) { 793c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 794c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 795c66ac9dbSNicholas Bellinger 796c66ac9dbSNicholas Bellinger lun = sep->sep_lun; 797c66ac9dbSNicholas Bellinger tpg = sep->sep_tpg; 798c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_sep_lock); 799c66ac9dbSNicholas Bellinger if (lun->lun_se_dev == NULL) { 800c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 801c66ac9dbSNicholas Bellinger continue; 802c66ac9dbSNicholas Bellinger } 803c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_sep_lock); 804c66ac9dbSNicholas Bellinger 805c66ac9dbSNicholas Bellinger core_dev_del_lun(tpg, lun->unpacked_lun); 806c66ac9dbSNicholas Bellinger 807c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 808c66ac9dbSNicholas Bellinger spin_lock(&dev->se_port_lock); 809c66ac9dbSNicholas Bellinger } 810c66ac9dbSNicholas Bellinger spin_unlock(&dev->se_port_lock); 811c66ac9dbSNicholas Bellinger 812c66ac9dbSNicholas Bellinger return; 813c66ac9dbSNicholas Bellinger } 814c66ac9dbSNicholas Bellinger 815c66ac9dbSNicholas Bellinger /* se_free_virtual_device(): 816c66ac9dbSNicholas Bellinger * 817c66ac9dbSNicholas Bellinger * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers. 818c66ac9dbSNicholas Bellinger */ 819c66ac9dbSNicholas Bellinger int se_free_virtual_device(struct se_device *dev, struct se_hba *hba) 820c66ac9dbSNicholas Bellinger { 821c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 822c66ac9dbSNicholas Bellinger se_clear_dev_ports(dev); 823c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 824c66ac9dbSNicholas Bellinger 825c66ac9dbSNicholas Bellinger core_alua_free_lu_gp_mem(dev); 826c66ac9dbSNicholas Bellinger se_release_device_for_hba(dev); 827c66ac9dbSNicholas Bellinger 828c66ac9dbSNicholas Bellinger return 0; 829c66ac9dbSNicholas Bellinger } 830c66ac9dbSNicholas Bellinger 831c66ac9dbSNicholas Bellinger static void se_dev_start(struct se_device *dev) 832c66ac9dbSNicholas Bellinger { 833c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 834c66ac9dbSNicholas Bellinger 835c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 836c66ac9dbSNicholas Bellinger atomic_inc(&dev->dev_obj.obj_access_count); 837c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_obj.obj_access_count) == 1) { 838c66ac9dbSNicholas Bellinger if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) { 839c66ac9dbSNicholas Bellinger dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED; 840c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED; 841c66ac9dbSNicholas Bellinger } else if (dev->dev_status & 842c66ac9dbSNicholas Bellinger TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) { 843c66ac9dbSNicholas Bellinger dev->dev_status &= 844c66ac9dbSNicholas Bellinger ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; 845c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED; 846c66ac9dbSNicholas Bellinger } 847c66ac9dbSNicholas Bellinger } 848c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 849c66ac9dbSNicholas Bellinger } 850c66ac9dbSNicholas Bellinger 851c66ac9dbSNicholas Bellinger static void se_dev_stop(struct se_device *dev) 852c66ac9dbSNicholas Bellinger { 853c66ac9dbSNicholas Bellinger struct se_hba *hba = dev->se_hba; 854c66ac9dbSNicholas Bellinger 855c66ac9dbSNicholas Bellinger spin_lock(&hba->device_lock); 856c66ac9dbSNicholas Bellinger atomic_dec(&dev->dev_obj.obj_access_count); 857c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_obj.obj_access_count) == 0) { 858c66ac9dbSNicholas Bellinger if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) { 859c66ac9dbSNicholas Bellinger dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED; 860c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED; 861c66ac9dbSNicholas Bellinger } else if (dev->dev_status & 862c66ac9dbSNicholas Bellinger TRANSPORT_DEVICE_OFFLINE_ACTIVATED) { 863c66ac9dbSNicholas Bellinger dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED; 864c66ac9dbSNicholas Bellinger dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED; 865c66ac9dbSNicholas Bellinger } 866c66ac9dbSNicholas Bellinger } 867c66ac9dbSNicholas Bellinger spin_unlock(&hba->device_lock); 868c66ac9dbSNicholas Bellinger 869c66ac9dbSNicholas Bellinger while (atomic_read(&hba->dev_mib_access_count)) 870c66ac9dbSNicholas Bellinger cpu_relax(); 871c66ac9dbSNicholas Bellinger } 872c66ac9dbSNicholas Bellinger 873c66ac9dbSNicholas Bellinger int se_dev_check_online(struct se_device *dev) 874c66ac9dbSNicholas Bellinger { 875c66ac9dbSNicholas Bellinger int ret; 876c66ac9dbSNicholas Bellinger 877c66ac9dbSNicholas Bellinger spin_lock_irq(&dev->dev_status_lock); 878c66ac9dbSNicholas Bellinger ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) || 879c66ac9dbSNicholas Bellinger (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1; 880c66ac9dbSNicholas Bellinger spin_unlock_irq(&dev->dev_status_lock); 881c66ac9dbSNicholas Bellinger 882c66ac9dbSNicholas Bellinger return ret; 883c66ac9dbSNicholas Bellinger } 884c66ac9dbSNicholas Bellinger 885c66ac9dbSNicholas Bellinger int se_dev_check_shutdown(struct se_device *dev) 886c66ac9dbSNicholas Bellinger { 887c66ac9dbSNicholas Bellinger int ret; 888c66ac9dbSNicholas Bellinger 889c66ac9dbSNicholas Bellinger spin_lock_irq(&dev->dev_status_lock); 890c66ac9dbSNicholas Bellinger ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN); 891c66ac9dbSNicholas Bellinger spin_unlock_irq(&dev->dev_status_lock); 892c66ac9dbSNicholas Bellinger 893c66ac9dbSNicholas Bellinger return ret; 894c66ac9dbSNicholas Bellinger } 895c66ac9dbSNicholas Bellinger 896c66ac9dbSNicholas Bellinger void se_dev_set_default_attribs( 897c66ac9dbSNicholas Bellinger struct se_device *dev, 898c66ac9dbSNicholas Bellinger struct se_dev_limits *dev_limits) 899c66ac9dbSNicholas Bellinger { 900c66ac9dbSNicholas Bellinger struct queue_limits *limits = &dev_limits->limits; 901c66ac9dbSNicholas Bellinger 902c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_dpo = DA_EMULATE_DPO; 903c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_fua_write = DA_EMULATE_FUA_WRITE; 904c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_fua_read = DA_EMULATE_FUA_READ; 905c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_write_cache = DA_EMULATE_WRITE_CACHE; 906c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL; 907c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_tas = DA_EMULATE_TAS; 908c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_tpu = DA_EMULATE_TPU; 909c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_tpws = DA_EMULATE_TPWS; 910c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_reservations = DA_EMULATE_RESERVATIONS; 911c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_alua = DA_EMULATE_ALUA; 912c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->enforce_pr_isids = DA_ENFORCE_PR_ISIDS; 913c66ac9dbSNicholas Bellinger /* 914c66ac9dbSNicholas Bellinger * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK 915c66ac9dbSNicholas Bellinger * iblock_create_virtdevice() from struct queue_limits values 916c66ac9dbSNicholas Bellinger * if blk_queue_discard()==1 917c66ac9dbSNicholas Bellinger */ 918c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT; 919c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->max_unmap_block_desc_count = 920c66ac9dbSNicholas Bellinger DA_MAX_UNMAP_BLOCK_DESC_COUNT; 921c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT; 922c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->unmap_granularity_alignment = 923c66ac9dbSNicholas Bellinger DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT; 924c66ac9dbSNicholas Bellinger /* 925c66ac9dbSNicholas Bellinger * block_size is based on subsystem plugin dependent requirements. 926c66ac9dbSNicholas Bellinger */ 927c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_block_size = limits->logical_block_size; 928c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->block_size = limits->logical_block_size; 929c66ac9dbSNicholas Bellinger /* 930c66ac9dbSNicholas Bellinger * max_sectors is based on subsystem plugin dependent requirements. 931c66ac9dbSNicholas Bellinger */ 932c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_max_sectors = limits->max_hw_sectors; 933c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->max_sectors = limits->max_sectors; 934c66ac9dbSNicholas Bellinger /* 935c66ac9dbSNicholas Bellinger * Set optimal_sectors from max_sectors, which can be lowered via 936c66ac9dbSNicholas Bellinger * configfs. 937c66ac9dbSNicholas Bellinger */ 938c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->optimal_sectors = limits->max_sectors; 939c66ac9dbSNicholas Bellinger /* 940c66ac9dbSNicholas Bellinger * queue_depth is based on subsystem plugin dependent requirements. 941c66ac9dbSNicholas Bellinger */ 942c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_queue_depth = dev_limits->hw_queue_depth; 943c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->queue_depth = dev_limits->queue_depth; 944c66ac9dbSNicholas Bellinger } 945c66ac9dbSNicholas Bellinger 946c66ac9dbSNicholas Bellinger int se_dev_set_task_timeout(struct se_device *dev, u32 task_timeout) 947c66ac9dbSNicholas Bellinger { 948c66ac9dbSNicholas Bellinger if (task_timeout > DA_TASK_TIMEOUT_MAX) { 949c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed task_timeout: %u larger then" 950c66ac9dbSNicholas Bellinger " DA_TASK_TIMEOUT_MAX\n", dev, task_timeout); 951c66ac9dbSNicholas Bellinger return -1; 952c66ac9dbSNicholas Bellinger } else { 953c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->task_timeout = task_timeout; 954c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set SE Device task_timeout: %u\n", 955c66ac9dbSNicholas Bellinger dev, task_timeout); 956c66ac9dbSNicholas Bellinger } 957c66ac9dbSNicholas Bellinger 958c66ac9dbSNicholas Bellinger return 0; 959c66ac9dbSNicholas Bellinger } 960c66ac9dbSNicholas Bellinger 961c66ac9dbSNicholas Bellinger int se_dev_set_max_unmap_lba_count( 962c66ac9dbSNicholas Bellinger struct se_device *dev, 963c66ac9dbSNicholas Bellinger u32 max_unmap_lba_count) 964c66ac9dbSNicholas Bellinger { 965c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->max_unmap_lba_count = max_unmap_lba_count; 966c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set max_unmap_lba_count: %u\n", 967c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->max_unmap_lba_count); 968c66ac9dbSNicholas Bellinger return 0; 969c66ac9dbSNicholas Bellinger } 970c66ac9dbSNicholas Bellinger 971c66ac9dbSNicholas Bellinger int se_dev_set_max_unmap_block_desc_count( 972c66ac9dbSNicholas Bellinger struct se_device *dev, 973c66ac9dbSNicholas Bellinger u32 max_unmap_block_desc_count) 974c66ac9dbSNicholas Bellinger { 975c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->max_unmap_block_desc_count = max_unmap_block_desc_count; 976c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set max_unmap_block_desc_count: %u\n", 977c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->max_unmap_block_desc_count); 978c66ac9dbSNicholas Bellinger return 0; 979c66ac9dbSNicholas Bellinger } 980c66ac9dbSNicholas Bellinger 981c66ac9dbSNicholas Bellinger int se_dev_set_unmap_granularity( 982c66ac9dbSNicholas Bellinger struct se_device *dev, 983c66ac9dbSNicholas Bellinger u32 unmap_granularity) 984c66ac9dbSNicholas Bellinger { 985c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->unmap_granularity = unmap_granularity; 986c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set unmap_granularity: %u\n", 987c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->unmap_granularity); 988c66ac9dbSNicholas Bellinger return 0; 989c66ac9dbSNicholas Bellinger } 990c66ac9dbSNicholas Bellinger 991c66ac9dbSNicholas Bellinger int se_dev_set_unmap_granularity_alignment( 992c66ac9dbSNicholas Bellinger struct se_device *dev, 993c66ac9dbSNicholas Bellinger u32 unmap_granularity_alignment) 994c66ac9dbSNicholas Bellinger { 995c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->unmap_granularity_alignment = unmap_granularity_alignment; 996c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: Set unmap_granularity_alignment: %u\n", 997c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->unmap_granularity_alignment); 998c66ac9dbSNicholas Bellinger return 0; 999c66ac9dbSNicholas Bellinger } 1000c66ac9dbSNicholas Bellinger 1001c66ac9dbSNicholas Bellinger int se_dev_set_emulate_dpo(struct se_device *dev, int flag) 1002c66ac9dbSNicholas Bellinger { 1003c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1004c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1005c66ac9dbSNicholas Bellinger return -1; 1006c66ac9dbSNicholas Bellinger } 1007c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->dpo_emulated == NULL) { 1008c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->dpo_emulated is NULL\n"); 1009c66ac9dbSNicholas Bellinger return -1; 1010c66ac9dbSNicholas Bellinger } 1011c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->dpo_emulated(dev) == 0) { 1012c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->dpo_emulated not supported\n"); 1013c66ac9dbSNicholas Bellinger return -1; 1014c66ac9dbSNicholas Bellinger } 1015c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_dpo = flag; 1016c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Page Out (DPO) Emulation" 1017c66ac9dbSNicholas Bellinger " bit: %d\n", dev, DEV_ATTRIB(dev)->emulate_dpo); 1018c66ac9dbSNicholas Bellinger return 0; 1019c66ac9dbSNicholas Bellinger } 1020c66ac9dbSNicholas Bellinger 1021c66ac9dbSNicholas Bellinger int se_dev_set_emulate_fua_write(struct se_device *dev, int flag) 1022c66ac9dbSNicholas Bellinger { 1023c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1024c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1025c66ac9dbSNicholas Bellinger return -1; 1026c66ac9dbSNicholas Bellinger } 1027c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->fua_write_emulated == NULL) { 1028c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->fua_write_emulated is NULL\n"); 1029c66ac9dbSNicholas Bellinger return -1; 1030c66ac9dbSNicholas Bellinger } 1031c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->fua_write_emulated(dev) == 0) { 1032c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->fua_write_emulated not supported\n"); 1033c66ac9dbSNicholas Bellinger return -1; 1034c66ac9dbSNicholas Bellinger } 1035c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_fua_write = flag; 1036c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access WRITEs: %d\n", 1037c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->emulate_fua_write); 1038c66ac9dbSNicholas Bellinger return 0; 1039c66ac9dbSNicholas Bellinger } 1040c66ac9dbSNicholas Bellinger 1041c66ac9dbSNicholas Bellinger int se_dev_set_emulate_fua_read(struct se_device *dev, int flag) 1042c66ac9dbSNicholas Bellinger { 1043c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1044c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1045c66ac9dbSNicholas Bellinger return -1; 1046c66ac9dbSNicholas Bellinger } 1047c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->fua_read_emulated == NULL) { 1048c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->fua_read_emulated is NULL\n"); 1049c66ac9dbSNicholas Bellinger return -1; 1050c66ac9dbSNicholas Bellinger } 1051c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->fua_read_emulated(dev) == 0) { 1052c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->fua_read_emulated not supported\n"); 1053c66ac9dbSNicholas Bellinger return -1; 1054c66ac9dbSNicholas Bellinger } 1055c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_fua_read = flag; 1056c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access READs: %d\n", 1057c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->emulate_fua_read); 1058c66ac9dbSNicholas Bellinger return 0; 1059c66ac9dbSNicholas Bellinger } 1060c66ac9dbSNicholas Bellinger 1061c66ac9dbSNicholas Bellinger int se_dev_set_emulate_write_cache(struct se_device *dev, int flag) 1062c66ac9dbSNicholas Bellinger { 1063c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1064c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1065c66ac9dbSNicholas Bellinger return -1; 1066c66ac9dbSNicholas Bellinger } 1067c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->write_cache_emulated == NULL) { 1068c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->write_cache_emulated is NULL\n"); 1069c66ac9dbSNicholas Bellinger return -1; 1070c66ac9dbSNicholas Bellinger } 1071c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->write_cache_emulated(dev) == 0) { 1072c66ac9dbSNicholas Bellinger printk(KERN_ERR "TRANSPORT(dev)->write_cache_emulated not supported\n"); 1073c66ac9dbSNicholas Bellinger return -1; 1074c66ac9dbSNicholas Bellinger } 1075c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_write_cache = flag; 1076c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", 1077c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->emulate_write_cache); 1078c66ac9dbSNicholas Bellinger return 0; 1079c66ac9dbSNicholas Bellinger } 1080c66ac9dbSNicholas Bellinger 1081c66ac9dbSNicholas Bellinger int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag) 1082c66ac9dbSNicholas Bellinger { 1083c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1) && (flag != 2)) { 1084c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1085c66ac9dbSNicholas Bellinger return -1; 1086c66ac9dbSNicholas Bellinger } 1087c66ac9dbSNicholas Bellinger 1088c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1089c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device" 1090c66ac9dbSNicholas Bellinger " UA_INTRLCK_CTRL while dev_export_obj: %d count" 1091c66ac9dbSNicholas Bellinger " exists\n", dev, 1092c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1093c66ac9dbSNicholas Bellinger return -1; 1094c66ac9dbSNicholas Bellinger } 1095c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl = flag; 1096c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", 1097c66ac9dbSNicholas Bellinger dev, DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl); 1098c66ac9dbSNicholas Bellinger 1099c66ac9dbSNicholas Bellinger return 0; 1100c66ac9dbSNicholas Bellinger } 1101c66ac9dbSNicholas Bellinger 1102c66ac9dbSNicholas Bellinger int se_dev_set_emulate_tas(struct se_device *dev, int flag) 1103c66ac9dbSNicholas Bellinger { 1104c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1105c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1106c66ac9dbSNicholas Bellinger return -1; 1107c66ac9dbSNicholas Bellinger } 1108c66ac9dbSNicholas Bellinger 1109c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1110c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device TAS while" 1111c66ac9dbSNicholas Bellinger " dev_export_obj: %d count exists\n", dev, 1112c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1113c66ac9dbSNicholas Bellinger return -1; 1114c66ac9dbSNicholas Bellinger } 1115c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_tas = flag; 1116c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device TASK_ABORTED status bit: %s\n", 1117c66ac9dbSNicholas Bellinger dev, (DEV_ATTRIB(dev)->emulate_tas) ? "Enabled" : "Disabled"); 1118c66ac9dbSNicholas Bellinger 1119c66ac9dbSNicholas Bellinger return 0; 1120c66ac9dbSNicholas Bellinger } 1121c66ac9dbSNicholas Bellinger 1122c66ac9dbSNicholas Bellinger int se_dev_set_emulate_tpu(struct se_device *dev, int flag) 1123c66ac9dbSNicholas Bellinger { 1124c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1125c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1126c66ac9dbSNicholas Bellinger return -1; 1127c66ac9dbSNicholas Bellinger } 1128c66ac9dbSNicholas Bellinger /* 1129c66ac9dbSNicholas Bellinger * We expect this value to be non-zero when generic Block Layer 1130c66ac9dbSNicholas Bellinger * Discard supported is detected iblock_create_virtdevice(). 1131c66ac9dbSNicholas Bellinger */ 1132c66ac9dbSNicholas Bellinger if (!(DEV_ATTRIB(dev)->max_unmap_block_desc_count)) { 1133c66ac9dbSNicholas Bellinger printk(KERN_ERR "Generic Block Discard not supported\n"); 1134c66ac9dbSNicholas Bellinger return -ENOSYS; 1135c66ac9dbSNicholas Bellinger } 1136c66ac9dbSNicholas Bellinger 1137c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_tpu = flag; 1138c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", 1139c66ac9dbSNicholas Bellinger dev, flag); 1140c66ac9dbSNicholas Bellinger return 0; 1141c66ac9dbSNicholas Bellinger } 1142c66ac9dbSNicholas Bellinger 1143c66ac9dbSNicholas Bellinger int se_dev_set_emulate_tpws(struct se_device *dev, int flag) 1144c66ac9dbSNicholas Bellinger { 1145c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1146c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1147c66ac9dbSNicholas Bellinger return -1; 1148c66ac9dbSNicholas Bellinger } 1149c66ac9dbSNicholas Bellinger /* 1150c66ac9dbSNicholas Bellinger * We expect this value to be non-zero when generic Block Layer 1151c66ac9dbSNicholas Bellinger * Discard supported is detected iblock_create_virtdevice(). 1152c66ac9dbSNicholas Bellinger */ 1153c66ac9dbSNicholas Bellinger if (!(DEV_ATTRIB(dev)->max_unmap_block_desc_count)) { 1154c66ac9dbSNicholas Bellinger printk(KERN_ERR "Generic Block Discard not supported\n"); 1155c66ac9dbSNicholas Bellinger return -ENOSYS; 1156c66ac9dbSNicholas Bellinger } 1157c66ac9dbSNicholas Bellinger 1158c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->emulate_tpws = flag; 1159c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", 1160c66ac9dbSNicholas Bellinger dev, flag); 1161c66ac9dbSNicholas Bellinger return 0; 1162c66ac9dbSNicholas Bellinger } 1163c66ac9dbSNicholas Bellinger 1164c66ac9dbSNicholas Bellinger int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag) 1165c66ac9dbSNicholas Bellinger { 1166c66ac9dbSNicholas Bellinger if ((flag != 0) && (flag != 1)) { 1167c66ac9dbSNicholas Bellinger printk(KERN_ERR "Illegal value %d\n", flag); 1168c66ac9dbSNicholas Bellinger return -1; 1169c66ac9dbSNicholas Bellinger } 1170c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->enforce_pr_isids = flag; 1171c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev, 1172c66ac9dbSNicholas Bellinger (DEV_ATTRIB(dev)->enforce_pr_isids) ? "Enabled" : "Disabled"); 1173c66ac9dbSNicholas Bellinger return 0; 1174c66ac9dbSNicholas Bellinger } 1175c66ac9dbSNicholas Bellinger 1176c66ac9dbSNicholas Bellinger /* 1177c66ac9dbSNicholas Bellinger * Note, this can only be called on unexported SE Device Object. 1178c66ac9dbSNicholas Bellinger */ 1179c66ac9dbSNicholas Bellinger int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth) 1180c66ac9dbSNicholas Bellinger { 1181c66ac9dbSNicholas Bellinger u32 orig_queue_depth = dev->queue_depth; 1182c66ac9dbSNicholas Bellinger 1183c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1184c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device TCQ while" 1185c66ac9dbSNicholas Bellinger " dev_export_obj: %d count exists\n", dev, 1186c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1187c66ac9dbSNicholas Bellinger return -1; 1188c66ac9dbSNicholas Bellinger } 1189c66ac9dbSNicholas Bellinger if (!(queue_depth)) { 1190c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Illegal ZERO value for queue" 1191c66ac9dbSNicholas Bellinger "_depth\n", dev); 1192c66ac9dbSNicholas Bellinger return -1; 1193c66ac9dbSNicholas Bellinger } 1194c66ac9dbSNicholas Bellinger 1195c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1196c66ac9dbSNicholas Bellinger if (queue_depth > DEV_ATTRIB(dev)->hw_queue_depth) { 1197c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed queue_depth: %u" 1198c66ac9dbSNicholas Bellinger " exceeds TCM/SE_Device TCQ: %u\n", 1199c66ac9dbSNicholas Bellinger dev, queue_depth, 1200c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_queue_depth); 1201c66ac9dbSNicholas Bellinger return -1; 1202c66ac9dbSNicholas Bellinger } 1203c66ac9dbSNicholas Bellinger } else { 1204c66ac9dbSNicholas Bellinger if (queue_depth > DEV_ATTRIB(dev)->queue_depth) { 1205c66ac9dbSNicholas Bellinger if (queue_depth > DEV_ATTRIB(dev)->hw_queue_depth) { 1206c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed queue_depth:" 1207c66ac9dbSNicholas Bellinger " %u exceeds TCM/SE_Device MAX" 1208c66ac9dbSNicholas Bellinger " TCQ: %u\n", dev, queue_depth, 1209c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_queue_depth); 1210c66ac9dbSNicholas Bellinger return -1; 1211c66ac9dbSNicholas Bellinger } 1212c66ac9dbSNicholas Bellinger } 1213c66ac9dbSNicholas Bellinger } 1214c66ac9dbSNicholas Bellinger 1215c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->queue_depth = dev->queue_depth = queue_depth; 1216c66ac9dbSNicholas Bellinger if (queue_depth > orig_queue_depth) 1217c66ac9dbSNicholas Bellinger atomic_add(queue_depth - orig_queue_depth, &dev->depth_left); 1218c66ac9dbSNicholas Bellinger else if (queue_depth < orig_queue_depth) 1219c66ac9dbSNicholas Bellinger atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left); 1220c66ac9dbSNicholas Bellinger 1221c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device TCQ Depth changed to: %u\n", 1222c66ac9dbSNicholas Bellinger dev, queue_depth); 1223c66ac9dbSNicholas Bellinger return 0; 1224c66ac9dbSNicholas Bellinger } 1225c66ac9dbSNicholas Bellinger 1226c66ac9dbSNicholas Bellinger int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors) 1227c66ac9dbSNicholas Bellinger { 1228c66ac9dbSNicholas Bellinger int force = 0; /* Force setting for VDEVS */ 1229c66ac9dbSNicholas Bellinger 1230c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1231c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device" 1232c66ac9dbSNicholas Bellinger " max_sectors while dev_export_obj: %d count exists\n", 1233c66ac9dbSNicholas Bellinger dev, atomic_read(&dev->dev_export_obj.obj_access_count)); 1234c66ac9dbSNicholas Bellinger return -1; 1235c66ac9dbSNicholas Bellinger } 1236c66ac9dbSNicholas Bellinger if (!(max_sectors)) { 1237c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Illegal ZERO value for" 1238c66ac9dbSNicholas Bellinger " max_sectors\n", dev); 1239c66ac9dbSNicholas Bellinger return -1; 1240c66ac9dbSNicholas Bellinger } 1241c66ac9dbSNicholas Bellinger if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) { 1242c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u less than" 1243c66ac9dbSNicholas Bellinger " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors, 1244c66ac9dbSNicholas Bellinger DA_STATUS_MAX_SECTORS_MIN); 1245c66ac9dbSNicholas Bellinger return -1; 1246c66ac9dbSNicholas Bellinger } 1247c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1248c66ac9dbSNicholas Bellinger if (max_sectors > DEV_ATTRIB(dev)->hw_max_sectors) { 1249c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" 1250c66ac9dbSNicholas Bellinger " greater than TCM/SE_Device max_sectors:" 1251c66ac9dbSNicholas Bellinger " %u\n", dev, max_sectors, 1252c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_max_sectors); 1253c66ac9dbSNicholas Bellinger return -1; 1254c66ac9dbSNicholas Bellinger } 1255c66ac9dbSNicholas Bellinger } else { 1256c66ac9dbSNicholas Bellinger if (!(force) && (max_sectors > 1257c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->hw_max_sectors)) { 1258c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" 1259c66ac9dbSNicholas Bellinger " greater than TCM/SE_Device max_sectors" 1260c66ac9dbSNicholas Bellinger ": %u, use force=1 to override.\n", dev, 1261c66ac9dbSNicholas Bellinger max_sectors, DEV_ATTRIB(dev)->hw_max_sectors); 1262c66ac9dbSNicholas Bellinger return -1; 1263c66ac9dbSNicholas Bellinger } 1264c66ac9dbSNicholas Bellinger if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) { 1265c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed max_sectors: %u" 1266c66ac9dbSNicholas Bellinger " greater than DA_STATUS_MAX_SECTORS_MAX:" 1267c66ac9dbSNicholas Bellinger " %u\n", dev, max_sectors, 1268c66ac9dbSNicholas Bellinger DA_STATUS_MAX_SECTORS_MAX); 1269c66ac9dbSNicholas Bellinger return -1; 1270c66ac9dbSNicholas Bellinger } 1271c66ac9dbSNicholas Bellinger } 1272c66ac9dbSNicholas Bellinger 1273c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->max_sectors = max_sectors; 1274c66ac9dbSNicholas Bellinger printk("dev[%p]: SE Device max_sectors changed to %u\n", 1275c66ac9dbSNicholas Bellinger dev, max_sectors); 1276c66ac9dbSNicholas Bellinger return 0; 1277c66ac9dbSNicholas Bellinger } 1278c66ac9dbSNicholas Bellinger 1279c66ac9dbSNicholas Bellinger int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors) 1280c66ac9dbSNicholas Bellinger { 1281c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1282c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device" 1283c66ac9dbSNicholas Bellinger " optimal_sectors while dev_export_obj: %d count exists\n", 1284c66ac9dbSNicholas Bellinger dev, atomic_read(&dev->dev_export_obj.obj_access_count)); 1285c66ac9dbSNicholas Bellinger return -EINVAL; 1286c66ac9dbSNicholas Bellinger } 1287c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1288c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed optimal_sectors cannot be" 1289c66ac9dbSNicholas Bellinger " changed for TCM/pSCSI\n", dev); 1290c66ac9dbSNicholas Bellinger return -EINVAL; 1291c66ac9dbSNicholas Bellinger } 1292c66ac9dbSNicholas Bellinger if (optimal_sectors > DEV_ATTRIB(dev)->max_sectors) { 1293c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Passed optimal_sectors %u cannot be" 1294c66ac9dbSNicholas Bellinger " greater than max_sectors: %u\n", dev, 1295c66ac9dbSNicholas Bellinger optimal_sectors, DEV_ATTRIB(dev)->max_sectors); 1296c66ac9dbSNicholas Bellinger return -EINVAL; 1297c66ac9dbSNicholas Bellinger } 1298c66ac9dbSNicholas Bellinger 1299c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->optimal_sectors = optimal_sectors; 1300c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device optimal_sectors changed to %u\n", 1301c66ac9dbSNicholas Bellinger dev, optimal_sectors); 1302c66ac9dbSNicholas Bellinger return 0; 1303c66ac9dbSNicholas Bellinger } 1304c66ac9dbSNicholas Bellinger 1305c66ac9dbSNicholas Bellinger int se_dev_set_block_size(struct se_device *dev, u32 block_size) 1306c66ac9dbSNicholas Bellinger { 1307c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1308c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Unable to change SE Device block_size" 1309c66ac9dbSNicholas Bellinger " while dev_export_obj: %d count exists\n", dev, 1310c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_export_obj.obj_access_count)); 1311c66ac9dbSNicholas Bellinger return -1; 1312c66ac9dbSNicholas Bellinger } 1313c66ac9dbSNicholas Bellinger 1314c66ac9dbSNicholas Bellinger if ((block_size != 512) && 1315c66ac9dbSNicholas Bellinger (block_size != 1024) && 1316c66ac9dbSNicholas Bellinger (block_size != 2048) && 1317c66ac9dbSNicholas Bellinger (block_size != 4096)) { 1318c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Illegal value for block_device: %u" 1319c66ac9dbSNicholas Bellinger " for SE device, must be 512, 1024, 2048 or 4096\n", 1320c66ac9dbSNicholas Bellinger dev, block_size); 1321c66ac9dbSNicholas Bellinger return -1; 1322c66ac9dbSNicholas Bellinger } 1323c66ac9dbSNicholas Bellinger 1324c66ac9dbSNicholas Bellinger if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) { 1325c66ac9dbSNicholas Bellinger printk(KERN_ERR "dev[%p]: Not allowed to change block_size for" 1326c66ac9dbSNicholas Bellinger " Physical Device, use for Linux/SCSI to change" 1327c66ac9dbSNicholas Bellinger " block_size for underlying hardware\n", dev); 1328c66ac9dbSNicholas Bellinger return -1; 1329c66ac9dbSNicholas Bellinger } 1330c66ac9dbSNicholas Bellinger 1331c66ac9dbSNicholas Bellinger DEV_ATTRIB(dev)->block_size = block_size; 1332c66ac9dbSNicholas Bellinger printk(KERN_INFO "dev[%p]: SE Device block_size changed to %u\n", 1333c66ac9dbSNicholas Bellinger dev, block_size); 1334c66ac9dbSNicholas Bellinger return 0; 1335c66ac9dbSNicholas Bellinger } 1336c66ac9dbSNicholas Bellinger 1337c66ac9dbSNicholas Bellinger struct se_lun *core_dev_add_lun( 1338c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1339c66ac9dbSNicholas Bellinger struct se_hba *hba, 1340c66ac9dbSNicholas Bellinger struct se_device *dev, 1341c66ac9dbSNicholas Bellinger u32 lun) 1342c66ac9dbSNicholas Bellinger { 1343c66ac9dbSNicholas Bellinger struct se_lun *lun_p; 1344c66ac9dbSNicholas Bellinger u32 lun_access = 0; 1345c66ac9dbSNicholas Bellinger 1346c66ac9dbSNicholas Bellinger if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) { 1347c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to export struct se_device while dev_access_obj: %d\n", 1348c66ac9dbSNicholas Bellinger atomic_read(&dev->dev_access_obj.obj_access_count)); 1349c66ac9dbSNicholas Bellinger return NULL; 1350c66ac9dbSNicholas Bellinger } 1351c66ac9dbSNicholas Bellinger 1352c66ac9dbSNicholas Bellinger lun_p = core_tpg_pre_addlun(tpg, lun); 1353c66ac9dbSNicholas Bellinger if ((IS_ERR(lun_p)) || !(lun_p)) 1354c66ac9dbSNicholas Bellinger return NULL; 1355c66ac9dbSNicholas Bellinger 1356c66ac9dbSNicholas Bellinger if (dev->dev_flags & DF_READ_ONLY) 1357c66ac9dbSNicholas Bellinger lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; 1358c66ac9dbSNicholas Bellinger else 1359c66ac9dbSNicholas Bellinger lun_access = TRANSPORT_LUNFLAGS_READ_WRITE; 1360c66ac9dbSNicholas Bellinger 1361c66ac9dbSNicholas Bellinger if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0) 1362c66ac9dbSNicholas Bellinger return NULL; 1363c66ac9dbSNicholas Bellinger 1364c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" 1365c66ac9dbSNicholas Bellinger " CORE HBA: %u\n", TPG_TFO(tpg)->get_fabric_name(), 1366c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg), lun_p->unpacked_lun, 1367c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), hba->hba_id); 1368c66ac9dbSNicholas Bellinger /* 1369c66ac9dbSNicholas Bellinger * Update LUN maps for dynamically added initiators when 1370c66ac9dbSNicholas Bellinger * generate_node_acl is enabled. 1371c66ac9dbSNicholas Bellinger */ 1372c66ac9dbSNicholas Bellinger if (TPG_TFO(tpg)->tpg_check_demo_mode(tpg)) { 1373c66ac9dbSNicholas Bellinger struct se_node_acl *acl; 1374c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 1375c66ac9dbSNicholas Bellinger list_for_each_entry(acl, &tpg->acl_node_list, acl_list) { 1376c66ac9dbSNicholas Bellinger if (acl->dynamic_node_acl) { 1377c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 1378c66ac9dbSNicholas Bellinger core_tpg_add_node_to_devs(acl, tpg); 1379c66ac9dbSNicholas Bellinger spin_lock_bh(&tpg->acl_node_lock); 1380c66ac9dbSNicholas Bellinger } 1381c66ac9dbSNicholas Bellinger } 1382c66ac9dbSNicholas Bellinger spin_unlock_bh(&tpg->acl_node_lock); 1383c66ac9dbSNicholas Bellinger } 1384c66ac9dbSNicholas Bellinger 1385c66ac9dbSNicholas Bellinger return lun_p; 1386c66ac9dbSNicholas Bellinger } 1387c66ac9dbSNicholas Bellinger 1388c66ac9dbSNicholas Bellinger /* core_dev_del_lun(): 1389c66ac9dbSNicholas Bellinger * 1390c66ac9dbSNicholas Bellinger * 1391c66ac9dbSNicholas Bellinger */ 1392c66ac9dbSNicholas Bellinger int core_dev_del_lun( 1393c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1394c66ac9dbSNicholas Bellinger u32 unpacked_lun) 1395c66ac9dbSNicholas Bellinger { 1396c66ac9dbSNicholas Bellinger struct se_lun *lun; 1397c66ac9dbSNicholas Bellinger int ret = 0; 1398c66ac9dbSNicholas Bellinger 1399c66ac9dbSNicholas Bellinger lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret); 1400c66ac9dbSNicholas Bellinger if (!(lun)) 1401c66ac9dbSNicholas Bellinger return ret; 1402c66ac9dbSNicholas Bellinger 1403c66ac9dbSNicholas Bellinger core_tpg_post_dellun(tpg, lun); 1404c66ac9dbSNicholas Bellinger 1405c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from" 1406c66ac9dbSNicholas Bellinger " device object\n", TPG_TFO(tpg)->get_fabric_name(), 1407c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg), unpacked_lun, 1408c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name()); 1409c66ac9dbSNicholas Bellinger 1410c66ac9dbSNicholas Bellinger return 0; 1411c66ac9dbSNicholas Bellinger } 1412c66ac9dbSNicholas Bellinger 1413c66ac9dbSNicholas Bellinger struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) 1414c66ac9dbSNicholas Bellinger { 1415c66ac9dbSNicholas Bellinger struct se_lun *lun; 1416c66ac9dbSNicholas Bellinger 1417c66ac9dbSNicholas Bellinger spin_lock(&tpg->tpg_lun_lock); 1418c66ac9dbSNicholas Bellinger if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { 1419c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS" 1420c66ac9dbSNicholas Bellinger "_PER_TPG-1: %u for Target Portal Group: %hu\n", 1421c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), unpacked_lun, 1422c66ac9dbSNicholas Bellinger TRANSPORT_MAX_LUNS_PER_TPG-1, 1423c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg)); 1424c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1425c66ac9dbSNicholas Bellinger return NULL; 1426c66ac9dbSNicholas Bellinger } 1427c66ac9dbSNicholas Bellinger lun = &tpg->tpg_lun_list[unpacked_lun]; 1428c66ac9dbSNicholas Bellinger 1429c66ac9dbSNicholas Bellinger if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { 1430c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s Logical Unit Number: %u is not free on" 1431c66ac9dbSNicholas Bellinger " Target Portal Group: %hu, ignoring request.\n", 1432c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), unpacked_lun, 1433c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg)); 1434c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1435c66ac9dbSNicholas Bellinger return NULL; 1436c66ac9dbSNicholas Bellinger } 1437c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1438c66ac9dbSNicholas Bellinger 1439c66ac9dbSNicholas Bellinger return lun; 1440c66ac9dbSNicholas Bellinger } 1441c66ac9dbSNicholas Bellinger 1442c66ac9dbSNicholas Bellinger /* core_dev_get_lun(): 1443c66ac9dbSNicholas Bellinger * 1444c66ac9dbSNicholas Bellinger * 1445c66ac9dbSNicholas Bellinger */ 1446c66ac9dbSNicholas Bellinger static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) 1447c66ac9dbSNicholas Bellinger { 1448c66ac9dbSNicholas Bellinger struct se_lun *lun; 1449c66ac9dbSNicholas Bellinger 1450c66ac9dbSNicholas Bellinger spin_lock(&tpg->tpg_lun_lock); 1451c66ac9dbSNicholas Bellinger if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { 1452c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" 1453c66ac9dbSNicholas Bellinger "_TPG-1: %u for Target Portal Group: %hu\n", 1454c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), unpacked_lun, 1455c66ac9dbSNicholas Bellinger TRANSPORT_MAX_LUNS_PER_TPG-1, 1456c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg)); 1457c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1458c66ac9dbSNicholas Bellinger return NULL; 1459c66ac9dbSNicholas Bellinger } 1460c66ac9dbSNicholas Bellinger lun = &tpg->tpg_lun_list[unpacked_lun]; 1461c66ac9dbSNicholas Bellinger 1462c66ac9dbSNicholas Bellinger if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { 1463c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s Logical Unit Number: %u is not active on" 1464c66ac9dbSNicholas Bellinger " Target Portal Group: %hu, ignoring request.\n", 1465c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), unpacked_lun, 1466c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg)); 1467c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1468c66ac9dbSNicholas Bellinger return NULL; 1469c66ac9dbSNicholas Bellinger } 1470c66ac9dbSNicholas Bellinger spin_unlock(&tpg->tpg_lun_lock); 1471c66ac9dbSNicholas Bellinger 1472c66ac9dbSNicholas Bellinger return lun; 1473c66ac9dbSNicholas Bellinger } 1474c66ac9dbSNicholas Bellinger 1475c66ac9dbSNicholas Bellinger struct se_lun_acl *core_dev_init_initiator_node_lun_acl( 1476c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1477c66ac9dbSNicholas Bellinger u32 mapped_lun, 1478c66ac9dbSNicholas Bellinger char *initiatorname, 1479c66ac9dbSNicholas Bellinger int *ret) 1480c66ac9dbSNicholas Bellinger { 1481c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl; 1482c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 1483c66ac9dbSNicholas Bellinger 1484c66ac9dbSNicholas Bellinger if (strlen(initiatorname) > TRANSPORT_IQN_LEN) { 1485c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s InitiatorName exceeds maximum size.\n", 1486c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name()); 1487c66ac9dbSNicholas Bellinger *ret = -EOVERFLOW; 1488c66ac9dbSNicholas Bellinger return NULL; 1489c66ac9dbSNicholas Bellinger } 1490c66ac9dbSNicholas Bellinger nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname); 1491c66ac9dbSNicholas Bellinger if (!(nacl)) { 1492c66ac9dbSNicholas Bellinger *ret = -EINVAL; 1493c66ac9dbSNicholas Bellinger return NULL; 1494c66ac9dbSNicholas Bellinger } 1495c66ac9dbSNicholas Bellinger lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL); 1496c66ac9dbSNicholas Bellinger if (!(lacl)) { 1497c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate memory for struct se_lun_acl.\n"); 1498c66ac9dbSNicholas Bellinger *ret = -ENOMEM; 1499c66ac9dbSNicholas Bellinger return NULL; 1500c66ac9dbSNicholas Bellinger } 1501c66ac9dbSNicholas Bellinger 1502c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&lacl->lacl_list); 1503c66ac9dbSNicholas Bellinger lacl->mapped_lun = mapped_lun; 1504c66ac9dbSNicholas Bellinger lacl->se_lun_nacl = nacl; 1505c66ac9dbSNicholas Bellinger snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname); 1506c66ac9dbSNicholas Bellinger 1507c66ac9dbSNicholas Bellinger return lacl; 1508c66ac9dbSNicholas Bellinger } 1509c66ac9dbSNicholas Bellinger 1510c66ac9dbSNicholas Bellinger int core_dev_add_initiator_node_lun_acl( 1511c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1512c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl, 1513c66ac9dbSNicholas Bellinger u32 unpacked_lun, 1514c66ac9dbSNicholas Bellinger u32 lun_access) 1515c66ac9dbSNicholas Bellinger { 1516c66ac9dbSNicholas Bellinger struct se_lun *lun; 1517c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 1518c66ac9dbSNicholas Bellinger 1519c66ac9dbSNicholas Bellinger lun = core_dev_get_lun(tpg, unpacked_lun); 1520c66ac9dbSNicholas Bellinger if (!(lun)) { 1521c66ac9dbSNicholas Bellinger printk(KERN_ERR "%s Logical Unit Number: %u is not active on" 1522c66ac9dbSNicholas Bellinger " Target Portal Group: %hu, ignoring request.\n", 1523c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), unpacked_lun, 1524c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg)); 1525c66ac9dbSNicholas Bellinger return -EINVAL; 1526c66ac9dbSNicholas Bellinger } 1527c66ac9dbSNicholas Bellinger 1528c66ac9dbSNicholas Bellinger nacl = lacl->se_lun_nacl; 1529c66ac9dbSNicholas Bellinger if (!(nacl)) 1530c66ac9dbSNicholas Bellinger return -EINVAL; 1531c66ac9dbSNicholas Bellinger 1532c66ac9dbSNicholas Bellinger if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) && 1533c66ac9dbSNicholas Bellinger (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE)) 1534c66ac9dbSNicholas Bellinger lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; 1535c66ac9dbSNicholas Bellinger 1536c66ac9dbSNicholas Bellinger lacl->se_lun = lun; 1537c66ac9dbSNicholas Bellinger 1538c66ac9dbSNicholas Bellinger if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun, 1539c66ac9dbSNicholas Bellinger lun_access, nacl, tpg, 1) < 0) 1540c66ac9dbSNicholas Bellinger return -EINVAL; 1541c66ac9dbSNicholas Bellinger 1542c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_acl_lock); 1543c66ac9dbSNicholas Bellinger list_add_tail(&lacl->lacl_list, &lun->lun_acl_list); 1544c66ac9dbSNicholas Bellinger atomic_inc(&lun->lun_acl_count); 1545c66ac9dbSNicholas Bellinger smp_mb__after_atomic_inc(); 1546c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_acl_lock); 1547c66ac9dbSNicholas Bellinger 1548c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " 1549c66ac9dbSNicholas Bellinger " InitiatorNode: %s\n", TPG_TFO(tpg)->get_fabric_name(), 1550c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, 1551c66ac9dbSNicholas Bellinger (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", 1552c66ac9dbSNicholas Bellinger lacl->initiatorname); 1553c66ac9dbSNicholas Bellinger /* 1554c66ac9dbSNicholas Bellinger * Check to see if there are any existing persistent reservation APTPL 1555c66ac9dbSNicholas Bellinger * pre-registrations that need to be enabled for this LUN ACL.. 1556c66ac9dbSNicholas Bellinger */ 1557c66ac9dbSNicholas Bellinger core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl); 1558c66ac9dbSNicholas Bellinger return 0; 1559c66ac9dbSNicholas Bellinger } 1560c66ac9dbSNicholas Bellinger 1561c66ac9dbSNicholas Bellinger /* core_dev_del_initiator_node_lun_acl(): 1562c66ac9dbSNicholas Bellinger * 1563c66ac9dbSNicholas Bellinger * 1564c66ac9dbSNicholas Bellinger */ 1565c66ac9dbSNicholas Bellinger int core_dev_del_initiator_node_lun_acl( 1566c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1567c66ac9dbSNicholas Bellinger struct se_lun *lun, 1568c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl) 1569c66ac9dbSNicholas Bellinger { 1570c66ac9dbSNicholas Bellinger struct se_node_acl *nacl; 1571c66ac9dbSNicholas Bellinger 1572c66ac9dbSNicholas Bellinger nacl = lacl->se_lun_nacl; 1573c66ac9dbSNicholas Bellinger if (!(nacl)) 1574c66ac9dbSNicholas Bellinger return -EINVAL; 1575c66ac9dbSNicholas Bellinger 1576c66ac9dbSNicholas Bellinger spin_lock(&lun->lun_acl_lock); 1577c66ac9dbSNicholas Bellinger list_del(&lacl->lacl_list); 1578c66ac9dbSNicholas Bellinger atomic_dec(&lun->lun_acl_count); 1579c66ac9dbSNicholas Bellinger smp_mb__after_atomic_dec(); 1580c66ac9dbSNicholas Bellinger spin_unlock(&lun->lun_acl_lock); 1581c66ac9dbSNicholas Bellinger 1582c66ac9dbSNicholas Bellinger core_update_device_list_for_node(lun, NULL, lacl->mapped_lun, 1583c66ac9dbSNicholas Bellinger TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); 1584c66ac9dbSNicholas Bellinger 1585c66ac9dbSNicholas Bellinger lacl->se_lun = NULL; 1586c66ac9dbSNicholas Bellinger 1587c66ac9dbSNicholas Bellinger printk(KERN_INFO "%s_TPG[%hu]_LUN[%u] - Removed ACL for" 1588c66ac9dbSNicholas Bellinger " InitiatorNode: %s Mapped LUN: %u\n", 1589c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), 1590c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg), lun->unpacked_lun, 1591c66ac9dbSNicholas Bellinger lacl->initiatorname, lacl->mapped_lun); 1592c66ac9dbSNicholas Bellinger 1593c66ac9dbSNicholas Bellinger return 0; 1594c66ac9dbSNicholas Bellinger } 1595c66ac9dbSNicholas Bellinger 1596c66ac9dbSNicholas Bellinger void core_dev_free_initiator_node_lun_acl( 1597c66ac9dbSNicholas Bellinger struct se_portal_group *tpg, 1598c66ac9dbSNicholas Bellinger struct se_lun_acl *lacl) 1599c66ac9dbSNicholas Bellinger { 1600c66ac9dbSNicholas Bellinger printk("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" 1601c66ac9dbSNicholas Bellinger " Mapped LUN: %u\n", TPG_TFO(tpg)->get_fabric_name(), 1602c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->tpg_get_tag(tpg), 1603c66ac9dbSNicholas Bellinger TPG_TFO(tpg)->get_fabric_name(), 1604c66ac9dbSNicholas Bellinger lacl->initiatorname, lacl->mapped_lun); 1605c66ac9dbSNicholas Bellinger 1606c66ac9dbSNicholas Bellinger kfree(lacl); 1607c66ac9dbSNicholas Bellinger } 1608c66ac9dbSNicholas Bellinger 1609c66ac9dbSNicholas Bellinger int core_dev_setup_virtual_lun0(void) 1610c66ac9dbSNicholas Bellinger { 1611c66ac9dbSNicholas Bellinger struct se_hba *hba; 1612c66ac9dbSNicholas Bellinger struct se_device *dev; 1613c66ac9dbSNicholas Bellinger struct se_subsystem_dev *se_dev = NULL; 1614c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 1615c66ac9dbSNicholas Bellinger char buf[16]; 1616c66ac9dbSNicholas Bellinger int ret; 1617c66ac9dbSNicholas Bellinger 1618c66ac9dbSNicholas Bellinger hba = core_alloc_hba("rd_dr", 0, HBA_FLAGS_INTERNAL_USE); 1619c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 1620c66ac9dbSNicholas Bellinger return PTR_ERR(hba); 1621c66ac9dbSNicholas Bellinger 1622c66ac9dbSNicholas Bellinger se_global->g_lun0_hba = hba; 1623c66ac9dbSNicholas Bellinger t = hba->transport; 1624c66ac9dbSNicholas Bellinger 1625c66ac9dbSNicholas Bellinger se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); 1626c66ac9dbSNicholas Bellinger if (!(se_dev)) { 1627c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to allocate memory for" 1628c66ac9dbSNicholas Bellinger " struct se_subsystem_dev\n"); 1629c66ac9dbSNicholas Bellinger ret = -ENOMEM; 1630c66ac9dbSNicholas Bellinger goto out; 1631c66ac9dbSNicholas Bellinger } 1632c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->g_se_dev_list); 1633c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); 1634c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); 1635c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_reservation.registration_list); 1636c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_reservation.aptpl_reg_list); 1637c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_reservation.registration_lock); 1638c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_reservation.aptpl_reg_lock); 1639c66ac9dbSNicholas Bellinger INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); 1640c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); 1641c66ac9dbSNicholas Bellinger spin_lock_init(&se_dev->se_dev_lock); 1642c66ac9dbSNicholas Bellinger se_dev->t10_reservation.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; 1643c66ac9dbSNicholas Bellinger se_dev->t10_wwn.t10_sub_dev = se_dev; 1644c66ac9dbSNicholas Bellinger se_dev->t10_alua.t10_sub_dev = se_dev; 1645c66ac9dbSNicholas Bellinger se_dev->se_dev_attrib.da_sub_dev = se_dev; 1646c66ac9dbSNicholas Bellinger se_dev->se_dev_hba = hba; 1647c66ac9dbSNicholas Bellinger 1648c66ac9dbSNicholas Bellinger se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0"); 1649c66ac9dbSNicholas Bellinger if (!(se_dev->se_dev_su_ptr)) { 1650c66ac9dbSNicholas Bellinger printk(KERN_ERR "Unable to locate subsystem dependent pointer" 1651c66ac9dbSNicholas Bellinger " from allocate_virtdevice()\n"); 1652c66ac9dbSNicholas Bellinger ret = -ENOMEM; 1653c66ac9dbSNicholas Bellinger goto out; 1654c66ac9dbSNicholas Bellinger } 1655c66ac9dbSNicholas Bellinger se_global->g_lun0_su_dev = se_dev; 1656c66ac9dbSNicholas Bellinger 1657c66ac9dbSNicholas Bellinger memset(buf, 0, 16); 1658c66ac9dbSNicholas Bellinger sprintf(buf, "rd_pages=8"); 1659c66ac9dbSNicholas Bellinger t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf)); 1660c66ac9dbSNicholas Bellinger 1661c66ac9dbSNicholas Bellinger dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); 1662c66ac9dbSNicholas Bellinger if (!(dev) || IS_ERR(dev)) { 1663c66ac9dbSNicholas Bellinger ret = -ENOMEM; 1664c66ac9dbSNicholas Bellinger goto out; 1665c66ac9dbSNicholas Bellinger } 1666c66ac9dbSNicholas Bellinger se_dev->se_dev_ptr = dev; 1667c66ac9dbSNicholas Bellinger se_global->g_lun0_dev = dev; 1668c66ac9dbSNicholas Bellinger 1669c66ac9dbSNicholas Bellinger return 0; 1670c66ac9dbSNicholas Bellinger out: 1671c66ac9dbSNicholas Bellinger se_global->g_lun0_su_dev = NULL; 1672c66ac9dbSNicholas Bellinger kfree(se_dev); 1673c66ac9dbSNicholas Bellinger if (se_global->g_lun0_hba) { 1674c66ac9dbSNicholas Bellinger core_delete_hba(se_global->g_lun0_hba); 1675c66ac9dbSNicholas Bellinger se_global->g_lun0_hba = NULL; 1676c66ac9dbSNicholas Bellinger } 1677c66ac9dbSNicholas Bellinger return ret; 1678c66ac9dbSNicholas Bellinger } 1679c66ac9dbSNicholas Bellinger 1680c66ac9dbSNicholas Bellinger 1681c66ac9dbSNicholas Bellinger void core_dev_release_virtual_lun0(void) 1682c66ac9dbSNicholas Bellinger { 1683c66ac9dbSNicholas Bellinger struct se_hba *hba = se_global->g_lun0_hba; 1684c66ac9dbSNicholas Bellinger struct se_subsystem_dev *su_dev = se_global->g_lun0_su_dev; 1685c66ac9dbSNicholas Bellinger 1686c66ac9dbSNicholas Bellinger if (!(hba)) 1687c66ac9dbSNicholas Bellinger return; 1688c66ac9dbSNicholas Bellinger 1689c66ac9dbSNicholas Bellinger if (se_global->g_lun0_dev) 1690c66ac9dbSNicholas Bellinger se_free_virtual_device(se_global->g_lun0_dev, hba); 1691c66ac9dbSNicholas Bellinger 1692c66ac9dbSNicholas Bellinger kfree(su_dev); 1693c66ac9dbSNicholas Bellinger core_delete_hba(hba); 1694c66ac9dbSNicholas Bellinger } 1695