drivers/target/target_core_device.c

   1 /*******************************************************************************
   2  * Filename:  target_core_device.c (based on iscsi_target_device.c)
   3  *
   4  * This file contains the TCM Virtual Device and Disk Transport
   5  * agnostic related functions.
   6  *
   7  * (c) Copyright 2003-2013 Datera, Inc.
   8  *
   9  * Nicholas A. Bellinger <nab@kernel.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/net.h>
  28 #include <linux/string.h>
  29 #include <linux/delay.h>
  30 #include <linux/timer.h>
  31 #include <linux/slab.h>
  32 #include <linux/spinlock.h>
  33 #include <linux/kthread.h>
  34 #include <linux/in.h>
  35 #include <linux/export.h>
  36 #include <net/sock.h>
  37 #include <net/tcp.h>
  38 #include <scsi/scsi.h>
  39 #include <scsi/scsi_device.h>
  40
  41 #include <target/target_core_base.h>
  42 #include <target/target_core_backend.h>
  43 #include <target/target_core_fabric.h>
  44
  45 #include "target_core_internal.h"
  46 #include "target_core_alua.h"
  47 #include "target_core_pr.h"
  48 #include "target_core_ua.h"
  49
  50 DEFINE_MUTEX(g_device_mutex);
  51 LIST_HEAD(g_device_list);
  52
  53 static struct se_hba *lun0_hba;
  54 /* not static, needed by tpg.c */
  55 struct se_device *g_lun0_dev;
  56
  57 sense_reason_t
  58 transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
  59 {
  60         struct se_lun *se_lun = NULL;
  61         struct se_session *se_sess = se_cmd->se_sess;
  62         struct se_device *dev;
  63         unsigned long flags;
  64
  65         if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG)
  66                 return TCM_NON_EXISTENT_LUN;
  67
  68         spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags);
  69         se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun];
  70         if (se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
  71                 struct se_dev_entry *deve = se_cmd->se_deve;
  72
  73                 deve->total_cmds++;
  74
  75                 if ((se_cmd->data_direction == DMA_TO_DEVICE) &&
  76                     (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY)) {
  77                         pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
  78                                 " Access for 0x%08x\n",
  79                                 se_cmd->se_tfo->get_fabric_name(),
  80                                 unpacked_lun);
  81                         spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
  82                         return TCM_WRITE_PROTECTED;
  83                 }
  84
  85                 if (se_cmd->data_direction == DMA_TO_DEVICE)
  86                         deve->write_bytes += se_cmd->data_length;
  87                 else if (se_cmd->data_direction == DMA_FROM_DEVICE)
  88                         deve->read_bytes += se_cmd->data_length;
  89
  90                 se_lun = deve->se_lun;
  91                 se_cmd->se_lun = deve->se_lun;
  92                 se_cmd->pr_res_key = deve->pr_res_key;
  93                 se_cmd->orig_fe_lun = unpacked_lun;
  94                 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
  95
  96                 percpu_ref_get(&se_lun->lun_ref);
  97                 se_cmd->lun_ref_active = true;
  98         }
  99         spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
 100
 101         if (!se_lun) {
 102                 /*
 103                  * Use the se_portal_group->tpg_virt_lun0 to allow for
 104                  * REPORT_LUNS, et al to be returned when no active
 105                  * MappedLUN=0 exists for this Initiator Port.
 106                  */
 107                 if (unpacked_lun != 0) {
 108                         pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
 109                                 " Access for 0x%08x\n",
 110                                 se_cmd->se_tfo->get_fabric_name(),
 111                                 unpacked_lun);
 112                         return TCM_NON_EXISTENT_LUN;
 113                 }
 114                 /*
 115                  * Force WRITE PROTECT for virtual LUN 0
 116                  */
 117                 if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
 118                     (se_cmd->data_direction != DMA_NONE))
 119                         return TCM_WRITE_PROTECTED;
 120
 121                 se_lun = &se_sess->se_tpg->tpg_virt_lun0;
 122                 se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0;
 123                 se_cmd->orig_fe_lun = 0;
 124                 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
 125
 126                 percpu_ref_get(&se_lun->lun_ref);
 127                 se_cmd->lun_ref_active = true;
 128         }
 129
 130         /* Directly associate cmd with se_dev */
 131         se_cmd->se_dev = se_lun->lun_se_dev;
 132
 133         dev = se_lun->lun_se_dev;
 134         atomic_long_inc(&dev->num_cmds);
 135         if (se_cmd->data_direction == DMA_TO_DEVICE)
 136                 atomic_long_add(se_cmd->data_length, &dev->write_bytes);
 137         else if (se_cmd->data_direction == DMA_FROM_DEVICE)
 138                 atomic_long_add(se_cmd->data_length, &dev->read_bytes);
 139
 140         return 0;
 141 }
 142 EXPORT_SYMBOL(transport_lookup_cmd_lun);
 143
 144 int transport_lookup_tmr_lun(struct se_cmd *se_cmd, u32 unpacked_lun)
 145 {
 146         struct se_dev_entry *deve;
 147         struct se_lun *se_lun = NULL;
 148         struct se_session *se_sess = se_cmd->se_sess;
 149         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 150         unsigned long flags;
 151
 152         if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG)
 153                 return -ENODEV;
 154
 155         spin_lock_irqsave(&se_sess->se_node_acl->device_list_lock, flags);
 156         se_cmd->se_deve = se_sess->se_node_acl->device_list[unpacked_lun];
 157         deve = se_cmd->se_deve;
 158
 159         if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
 160                 se_tmr->tmr_lun = deve->se_lun;
 161                 se_cmd->se_lun = deve->se_lun;
 162                 se_lun = deve->se_lun;
 163                 se_cmd->pr_res_key = deve->pr_res_key;
 164                 se_cmd->orig_fe_lun = unpacked_lun;
 165         }
 166         spin_unlock_irqrestore(&se_sess->se_node_acl->device_list_lock, flags);
 167
 168         if (!se_lun) {
 169                 pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
 170                         " Access for 0x%08x\n",
 171                         se_cmd->se_tfo->get_fabric_name(),
 172                         unpacked_lun);
 173                 return -ENODEV;
 174         }
 175
 176         /* Directly associate cmd with se_dev */
 177         se_cmd->se_dev = se_lun->lun_se_dev;
 178         se_tmr->tmr_dev = se_lun->lun_se_dev;
 179
 180         spin_lock_irqsave(&se_tmr->tmr_dev->se_tmr_lock, flags);
 181         list_add_tail(&se_tmr->tmr_list, &se_tmr->tmr_dev->dev_tmr_list);
 182         spin_unlock_irqrestore(&se_tmr->tmr_dev->se_tmr_lock, flags);
 183
 184         return 0;
 185 }
 186 EXPORT_SYMBOL(transport_lookup_tmr_lun);
 187
 188 /*
 189  * This function is called from core_scsi3_emulate_pro_register_and_move()
 190  * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count
 191  * when a matching rtpi is found.
 192  */
 193 struct se_dev_entry *core_get_se_deve_from_rtpi(
 194         struct se_node_acl *nacl,
 195         u16 rtpi)
 196 {
 197         struct se_dev_entry *deve;
 198         struct se_lun *lun;
 199         struct se_port *port;
 200         struct se_portal_group *tpg = nacl->se_tpg;
 201         u32 i;
 202
 203         spin_lock_irq(&nacl->device_list_lock);
 204         for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
 205                 deve = nacl->device_list[i];
 206
 207                 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
 208                         continue;
 209
 210                 lun = deve->se_lun;
 211                 if (!lun) {
 212                         pr_err("%s device entries device pointer is"
 213                                 " NULL, but Initiator has access.\n",
 214                                 tpg->se_tpg_tfo->get_fabric_name());
 215                         continue;
 216                 }
 217                 port = lun->lun_sep;
 218                 if (!port) {
 219                         pr_err("%s device entries device pointer is"
 220                                 " NULL, but Initiator has access.\n",
 221                                 tpg->se_tpg_tfo->get_fabric_name());
 222                         continue;
 223                 }
 224                 if (port->sep_rtpi != rtpi)
 225                         continue;
 226
 227                 atomic_inc_mb(&deve->pr_ref_count);
 228                 spin_unlock_irq(&nacl->device_list_lock);
 229
 230                 return deve;
 231         }
 232         spin_unlock_irq(&nacl->device_list_lock);
 233
 234         return NULL;
 235 }
 236
 237 int core_free_device_list_for_node(
 238         struct se_node_acl *nacl,
 239         struct se_portal_group *tpg)
 240 {
 241         struct se_dev_entry *deve;
 242         struct se_lun *lun;
 243         u32 i;
 244
 245         if (!nacl->device_list)
 246                 return 0;
 247
 248         spin_lock_irq(&nacl->device_list_lock);
 249         for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
 250                 deve = nacl->device_list[i];
 251
 252                 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
 253                         continue;
 254
 255                 if (!deve->se_lun) {
 256                         pr_err("%s device entries device pointer is"
 257                                 " NULL, but Initiator has access.\n",
 258                                 tpg->se_tpg_tfo->get_fabric_name());
 259                         continue;
 260                 }
 261                 lun = deve->se_lun;
 262
 263                 spin_unlock_irq(&nacl->device_list_lock);
 264                 core_disable_device_list_for_node(lun, NULL, deve->mapped_lun,
 265                         TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg);
 266                 spin_lock_irq(&nacl->device_list_lock);
 267         }
 268         spin_unlock_irq(&nacl->device_list_lock);
 269
 270         array_free(nacl->device_list, TRANSPORT_MAX_LUNS_PER_TPG);
 271         nacl->device_list = NULL;
 272
 273         return 0;
 274 }
 275
 276 void core_update_device_list_access(
 277         u32 mapped_lun,
 278         u32 lun_access,
 279         struct se_node_acl *nacl)
 280 {
 281         struct se_dev_entry *deve;
 282
 283         spin_lock_irq(&nacl->device_list_lock);
 284         deve = nacl->device_list[mapped_lun];
 285         if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
 286                 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
 287                 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
 288         } else {
 289                 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
 290                 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
 291         }
 292         spin_unlock_irq(&nacl->device_list_lock);
 293 }
 294
 295 /*      core_enable_device_list_for_node():
 296  *
 297  *
 298  */
 299 int core_enable_device_list_for_node(
 300         struct se_lun *lun,
 301         struct se_lun_acl *lun_acl,
 302         u32 mapped_lun,
 303         u32 lun_access,
 304         struct se_node_acl *nacl,
 305         struct se_portal_group *tpg)
 306 {
 307         struct se_port *port = lun->lun_sep;
 308         struct se_dev_entry *deve;
 309
 310         spin_lock_irq(&nacl->device_list_lock);
 311
 312         deve = nacl->device_list[mapped_lun];
 313
 314         /*
 315          * Check if the call is handling demo mode -> explicit LUN ACL
 316          * transition.  This transition must be for the same struct se_lun
 317          * + mapped_lun that was setup in demo mode..
 318          */
 319         if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
 320                 if (deve->se_lun_acl != NULL) {
 321                         pr_err("struct se_dev_entry->se_lun_acl"
 322                                " already set for demo mode -> explicit"
 323                                " LUN ACL transition\n");
 324                         spin_unlock_irq(&nacl->device_list_lock);
 325                         return -EINVAL;
 326                 }
 327                 if (deve->se_lun != lun) {
 328                         pr_err("struct se_dev_entry->se_lun does"
 329                                " match passed struct se_lun for demo mode"
 330                                " -> explicit LUN ACL transition\n");
 331                         spin_unlock_irq(&nacl->device_list_lock);
 332                         return -EINVAL;
 333                 }
 334                 deve->se_lun_acl = lun_acl;
 335
 336                 if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
 337                         deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
 338                         deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
 339                 } else {
 340                         deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
 341                         deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
 342                 }
 343
 344                 spin_unlock_irq(&nacl->device_list_lock);
 345                 return 0;
 346         }
 347
 348         deve->se_lun = lun;
 349         deve->se_lun_acl = lun_acl;
 350         deve->mapped_lun = mapped_lun;
 351         deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS;
 352
 353         if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
 354                 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
 355                 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
 356         } else {
 357                 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
 358                 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
 359         }
 360
 361         deve->creation_time = get_jiffies_64();
 362         deve->attach_count++;
 363         spin_unlock_irq(&nacl->device_list_lock);
 364
 365         spin_lock_bh(&port->sep_alua_lock);
 366         list_add_tail(&deve->alua_port_list, &port->sep_alua_list);
 367         spin_unlock_bh(&port->sep_alua_lock);
 368
 369         return 0;
 370 }
 371
 372 /*      core_disable_device_list_for_node():
 373  *
 374  *
 375  */
 376 int core_disable_device_list_for_node(
 377         struct se_lun *lun,
 378         struct se_lun_acl *lun_acl,
 379         u32 mapped_lun,
 380         u32 lun_access,
 381         struct se_node_acl *nacl,
 382         struct se_portal_group *tpg)
 383 {
 384         struct se_port *port = lun->lun_sep;
 385         struct se_dev_entry *deve = nacl->device_list[mapped_lun];
 386
 387         /*
 388          * If the MappedLUN entry is being disabled, the entry in
 389          * port->sep_alua_list must be removed now before clearing the
 390          * struct se_dev_entry pointers below as logic in
 391          * core_alua_do_transition_tg_pt() depends on these being present.
 392          *
 393          * deve->se_lun_acl will be NULL for demo-mode created LUNs
 394          * that have not been explicitly converted to MappedLUNs ->
 395          * struct se_lun_acl, but we remove deve->alua_port_list from
 396          * port->sep_alua_list. This also means that active UAs and
 397          * NodeACL context specific PR metadata for demo-mode
 398          * MappedLUN *deve will be released below..
 399          */
 400         spin_lock_bh(&port->sep_alua_lock);
 401         list_del(&deve->alua_port_list);
 402         spin_unlock_bh(&port->sep_alua_lock);
 403         /*
 404          * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE
 405          * PR operation to complete.
 406          */
 407         while (atomic_read(&deve->pr_ref_count) != 0)
 408                 cpu_relax();
 409
 410         spin_lock_irq(&nacl->device_list_lock);
 411         /*
 412          * Disable struct se_dev_entry LUN ACL mapping
 413          */
 414         core_scsi3_ua_release_all(deve);
 415         deve->se_lun = NULL;
 416         deve->se_lun_acl = NULL;
 417         deve->lun_flags = 0;
 418         deve->creation_time = 0;
 419         deve->attach_count--;
 420         spin_unlock_irq(&nacl->device_list_lock);
 421
 422         core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl);
 423         return 0;
 424 }
 425
 426 /*      core_clear_lun_from_tpg():
 427  *
 428  *
 429  */
 430 void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg)
 431 {
 432         struct se_node_acl *nacl;
 433         struct se_dev_entry *deve;
 434         u32 i;
 435
 436         spin_lock_irq(&tpg->acl_node_lock);
 437         list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) {
 438                 spin_unlock_irq(&tpg->acl_node_lock);
 439
 440                 spin_lock_irq(&nacl->device_list_lock);
 441                 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
 442                         deve = nacl->device_list[i];
 443                         if (lun != deve->se_lun)
 444                                 continue;
 445                         spin_unlock_irq(&nacl->device_list_lock);
 446
 447                         core_disable_device_list_for_node(lun, NULL,
 448                                 deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS,
 449                                 nacl, tpg);
 450
 451                         spin_lock_irq(&nacl->device_list_lock);
 452                 }
 453                 spin_unlock_irq(&nacl->device_list_lock);
 454
 455                 spin_lock_irq(&tpg->acl_node_lock);
 456         }
 457         spin_unlock_irq(&tpg->acl_node_lock);
 458 }
 459
 460 static struct se_port *core_alloc_port(struct se_device *dev)
 461 {
 462         struct se_port *port, *port_tmp;
 463
 464         port = kzalloc(sizeof(struct se_port), GFP_KERNEL);
 465         if (!port) {
 466                 pr_err("Unable to allocate struct se_port\n");
 467                 return ERR_PTR(-ENOMEM);
 468         }
 469         INIT_LIST_HEAD(&port->sep_alua_list);
 470         INIT_LIST_HEAD(&port->sep_list);
 471         atomic_set(&port->sep_tg_pt_secondary_offline, 0);
 472         spin_lock_init(&port->sep_alua_lock);
 473         mutex_init(&port->sep_tg_pt_md_mutex);
 474
 475         spin_lock(&dev->se_port_lock);
 476         if (dev->dev_port_count == 0x0000ffff) {
 477                 pr_warn("Reached dev->dev_port_count =="
 478                                 " 0x0000ffff\n");
 479                 spin_unlock(&dev->se_port_lock);
 480                 return ERR_PTR(-ENOSPC);
 481         }
 482 again:
 483         /*
 484          * Allocate the next RELATIVE TARGET PORT IDENTIFIER for this struct se_device
 485          * Here is the table from spc4r17 section 7.7.3.8.
 486          *
 487          *    Table 473 -- RELATIVE TARGET PORT IDENTIFIER field
 488          *
 489          * Code      Description
 490          * 0h        Reserved
 491          * 1h        Relative port 1, historically known as port A
 492          * 2h        Relative port 2, historically known as port B
 493          * 3h to FFFFh    Relative port 3 through 65 535
 494          */
 495         port->sep_rtpi = dev->dev_rpti_counter++;
 496         if (!port->sep_rtpi)
 497                 goto again;
 498
 499         list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) {
 500                 /*
 501                  * Make sure RELATIVE TARGET PORT IDENTIFIER is unique
 502                  * for 16-bit wrap..
 503                  */
 504                 if (port->sep_rtpi == port_tmp->sep_rtpi)
 505                         goto again;
 506         }
 507         spin_unlock(&dev->se_port_lock);
 508
 509         return port;
 510 }
 511
 512 static void core_export_port(
 513         struct se_device *dev,
 514         struct se_portal_group *tpg,
 515         struct se_port *port,
 516         struct se_lun *lun)
 517 {
 518         struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL;
 519
 520         spin_lock(&dev->se_port_lock);
 521         spin_lock(&lun->lun_sep_lock);
 522         port->sep_tpg = tpg;
 523         port->sep_lun = lun;
 524         lun->lun_sep = port;
 525         spin_unlock(&lun->lun_sep_lock);
 526
 527         list_add_tail(&port->sep_list, &dev->dev_sep_list);
 528         spin_unlock(&dev->se_port_lock);
 529
 530         if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV &&
 531             !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) {
 532                 tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port);
 533                 if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) {
 534                         pr_err("Unable to allocate t10_alua_tg_pt"
 535                                         "_gp_member_t\n");
 536                         return;
 537                 }
 538                 spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
 539                 __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
 540                         dev->t10_alua.default_tg_pt_gp);
 541                 spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
 542                 pr_debug("%s/%s: Adding to default ALUA Target Port"
 543                         " Group: alua/default_tg_pt_gp\n",
 544                         dev->transport->name, tpg->se_tpg_tfo->get_fabric_name());
 545         }
 546
 547         dev->dev_port_count++;
 548         port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */
 549 }
 550
 551 /*
 552  *      Called with struct se_device->se_port_lock spinlock held.
 553  */
 554 static void core_release_port(struct se_device *dev, struct se_port *port)
 555         __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock)
 556 {
 557         /*
 558          * Wait for any port reference for PR ALL_TG_PT=1 operation
 559          * to complete in __core_scsi3_alloc_registration()
 560          */
 561         spin_unlock(&dev->se_port_lock);
 562         if (atomic_read(&port->sep_tg_pt_ref_cnt))
 563                 cpu_relax();
 564         spin_lock(&dev->se_port_lock);
 565
 566         core_alua_free_tg_pt_gp_mem(port);
 567
 568         list_del(&port->sep_list);
 569         dev->dev_port_count--;
 570         kfree(port);
 571 }
 572
 573 int core_dev_export(
 574         struct se_device *dev,
 575         struct se_portal_group *tpg,
 576         struct se_lun *lun)
 577 {
 578         struct se_hba *hba = dev->se_hba;
 579         struct se_port *port;
 580
 581         port = core_alloc_port(dev);
 582         if (IS_ERR(port))
 583                 return PTR_ERR(port);
 584
 585         lun->lun_se_dev = dev;
 586
 587         spin_lock(&hba->device_lock);
 588         dev->export_count++;
 589         spin_unlock(&hba->device_lock);
 590
 591         core_export_port(dev, tpg, port, lun);
 592         return 0;
 593 }
 594
 595 void core_dev_unexport(
 596         struct se_device *dev,
 597         struct se_portal_group *tpg,
 598         struct se_lun *lun)
 599 {
 600         struct se_hba *hba = dev->se_hba;
 601         struct se_port *port = lun->lun_sep;
 602
 603         spin_lock(&lun->lun_sep_lock);
 604         if (lun->lun_se_dev == NULL) {
 605                 spin_unlock(&lun->lun_sep_lock);
 606                 return;
 607         }
 608         spin_unlock(&lun->lun_sep_lock);
 609
 610         spin_lock(&dev->se_port_lock);
 611         core_release_port(dev, port);
 612         spin_unlock(&dev->se_port_lock);
 613
 614         spin_lock(&hba->device_lock);
 615         dev->export_count--;
 616         spin_unlock(&hba->device_lock);
 617
 618         lun->lun_sep = NULL;
 619         lun->lun_se_dev = NULL;
 620 }
 621
 622 static void se_release_vpd_for_dev(struct se_device *dev)
 623 {
 624         struct t10_vpd *vpd, *vpd_tmp;
 625
 626         spin_lock(&dev->t10_wwn.t10_vpd_lock);
 627         list_for_each_entry_safe(vpd, vpd_tmp,
 628                         &dev->t10_wwn.t10_vpd_list, vpd_list) {
 629                 list_del(&vpd->vpd_list);
 630                 kfree(vpd);
 631         }
 632         spin_unlock(&dev->t10_wwn.t10_vpd_lock);
 633 }
 634
 635 static u32 se_dev_align_max_sectors(u32 max_sectors, u32 block_size)
 636 {
 637         u32 aligned_max_sectors;
 638         u32 alignment;
 639         /*
 640          * Limit max_sectors to a PAGE_SIZE aligned value for modern
 641          * transport_allocate_data_tasks() operation.
 642          */
 643         alignment = max(1ul, PAGE_SIZE / block_size);
 644         aligned_max_sectors = rounddown(max_sectors, alignment);
 645
 646         if (max_sectors != aligned_max_sectors)
 647                 pr_info("Rounding down aligned max_sectors from %u to %u\n",
 648                         max_sectors, aligned_max_sectors);
 649
 650         return aligned_max_sectors;
 651 }
 652
 653 int se_dev_set_max_unmap_lba_count(
 654         struct se_device *dev,
 655         u32 max_unmap_lba_count)
 656 {
 657         dev->dev_attrib.max_unmap_lba_count = max_unmap_lba_count;
 658         pr_debug("dev[%p]: Set max_unmap_lba_count: %u\n",
 659                         dev, dev->dev_attrib.max_unmap_lba_count);
 660         return 0;
 661 }
 662
 663 int se_dev_set_max_unmap_block_desc_count(
 664         struct se_device *dev,
 665         u32 max_unmap_block_desc_count)
 666 {
 667         dev->dev_attrib.max_unmap_block_desc_count =
 668                 max_unmap_block_desc_count;
 669         pr_debug("dev[%p]: Set max_unmap_block_desc_count: %u\n",
 670                         dev, dev->dev_attrib.max_unmap_block_desc_count);
 671         return 0;
 672 }
 673
 674 int se_dev_set_unmap_granularity(
 675         struct se_device *dev,
 676         u32 unmap_granularity)
 677 {
 678         dev->dev_attrib.unmap_granularity = unmap_granularity;
 679         pr_debug("dev[%p]: Set unmap_granularity: %u\n",
 680                         dev, dev->dev_attrib.unmap_granularity);
 681         return 0;
 682 }
 683
 684 int se_dev_set_unmap_granularity_alignment(
 685         struct se_device *dev,
 686         u32 unmap_granularity_alignment)
 687 {
 688         dev->dev_attrib.unmap_granularity_alignment = unmap_granularity_alignment;
 689         pr_debug("dev[%p]: Set unmap_granularity_alignment: %u\n",
 690                         dev, dev->dev_attrib.unmap_granularity_alignment);
 691         return 0;
 692 }
 693
 694 int se_dev_set_max_write_same_len(
 695         struct se_device *dev,
 696         u32 max_write_same_len)
 697 {
 698         dev->dev_attrib.max_write_same_len = max_write_same_len;
 699         pr_debug("dev[%p]: Set max_write_same_len: %u\n",
 700                         dev, dev->dev_attrib.max_write_same_len);
 701         return 0;
 702 }
 703
 704 static void dev_set_t10_wwn_model_alias(struct se_device *dev)
 705 {
 706         const char *configname;
 707
 708         configname = config_item_name(&dev->dev_group.cg_item);
 709         if (strlen(configname) >= 16) {
 710                 pr_warn("dev[%p]: Backstore name '%s' is too long for "
 711                         "INQUIRY_MODEL, truncating to 16 bytes\n", dev,
 712                         configname);
 713         }
 714         snprintf(&dev->t10_wwn.model[0], 16, "%s", configname);
 715 }
 716
 717 int se_dev_set_emulate_model_alias(struct se_device *dev, int flag)
 718 {
 719         if (dev->export_count) {
 720                 pr_err("dev[%p]: Unable to change model alias"
 721                         " while export_count is %d\n",
 722                         dev, dev->export_count);
 723                         return -EINVAL;
 724         }
 725
 726         if (flag != 0 && flag != 1) {
 727                 pr_err("Illegal value %d\n", flag);
 728                 return -EINVAL;
 729         }
 730
 731         if (flag) {
 732                 dev_set_t10_wwn_model_alias(dev);
 733         } else {
 734                 strncpy(&dev->t10_wwn.model[0],
 735                         dev->transport->inquiry_prod, 16);
 736         }
 737         dev->dev_attrib.emulate_model_alias = flag;
 738
 739         return 0;
 740 }
 741
 742 int se_dev_set_emulate_dpo(struct se_device *dev, int flag)
 743 {
 744         if (flag != 0 && flag != 1) {
 745                 pr_err("Illegal value %d\n", flag);
 746                 return -EINVAL;
 747         }
 748
 749         if (flag) {
 750                 pr_err("dpo_emulated not supported\n");
 751                 return -EINVAL;
 752         }
 753
 754         return 0;
 755 }
 756
 757 int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
 758 {
 759         if (flag != 0 && flag != 1) {
 760                 pr_err("Illegal value %d\n", flag);
 761                 return -EINVAL;
 762         }
 763
 764         if (flag &&
 765             dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
 766                 pr_err("emulate_fua_write not supported for pSCSI\n");
 767                 return -EINVAL;
 768         }
 769         dev->dev_attrib.emulate_fua_write = flag;
 770         pr_debug("dev[%p]: SE Device Forced Unit Access WRITEs: %d\n",
 771                         dev, dev->dev_attrib.emulate_fua_write);
 772         return 0;
 773 }
 774
 775 int se_dev_set_emulate_fua_read(struct se_device *dev, int flag)
 776 {
 777         if (flag != 0 && flag != 1) {
 778                 pr_err("Illegal value %d\n", flag);
 779                 return -EINVAL;
 780         }
 781
 782         if (flag) {
 783                 pr_err("ua read emulated not supported\n");
 784                 return -EINVAL;
 785         }
 786
 787         return 0;
 788 }
 789
 790 int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
 791 {
 792         if (flag != 0 && flag != 1) {
 793                 pr_err("Illegal value %d\n", flag);
 794                 return -EINVAL;
 795         }
 796         if (flag &&
 797             dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
 798                 pr_err("emulate_write_cache not supported for pSCSI\n");
 799                 return -EINVAL;
 800         }
 801         if (flag &&
 802             dev->transport->get_write_cache) {
 803                 pr_err("emulate_write_cache not supported for this device\n");
 804                 return -EINVAL;
 805         }
 806
 807         dev->dev_attrib.emulate_write_cache = flag;
 808         pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
 809                         dev, dev->dev_attrib.emulate_write_cache);
 810         return 0;
 811 }
 812
 813 int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag)
 814 {
 815         if ((flag != 0) && (flag != 1) && (flag != 2)) {
 816                 pr_err("Illegal value %d\n", flag);
 817                 return -EINVAL;
 818         }
 819
 820         if (dev->export_count) {
 821                 pr_err("dev[%p]: Unable to change SE Device"
 822                         " UA_INTRLCK_CTRL while export_count is %d\n",
 823                         dev, dev->export_count);
 824                 return -EINVAL;
 825         }
 826         dev->dev_attrib.emulate_ua_intlck_ctrl = flag;
 827         pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
 828                 dev, dev->dev_attrib.emulate_ua_intlck_ctrl);
 829
 830         return 0;
 831 }
 832
 833 int se_dev_set_emulate_tas(struct se_device *dev, int flag)
 834 {
 835         if ((flag != 0) && (flag != 1)) {
 836                 pr_err("Illegal value %d\n", flag);
 837                 return -EINVAL;
 838         }
 839
 840         if (dev->export_count) {
 841                 pr_err("dev[%p]: Unable to change SE Device TAS while"
 842                         " export_count is %d\n",
 843                         dev, dev->export_count);
 844                 return -EINVAL;
 845         }
 846         dev->dev_attrib.emulate_tas = flag;
 847         pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
 848                 dev, (dev->dev_attrib.emulate_tas) ? "Enabled" : "Disabled");
 849
 850         return 0;
 851 }
 852
 853 int se_dev_set_emulate_tpu(struct se_device *dev, int flag)
 854 {
 855         if ((flag != 0) && (flag != 1)) {
 856                 pr_err("Illegal value %d\n", flag);
 857                 return -EINVAL;
 858         }
 859         /*
 860          * We expect this value to be non-zero when generic Block Layer
 861          * Discard supported is detected iblock_create_virtdevice().
 862          */
 863         if (flag && !dev->dev_attrib.max_unmap_block_desc_count) {
 864                 pr_err("Generic Block Discard not supported\n");
 865                 return -ENOSYS;
 866         }
 867
 868         dev->dev_attrib.emulate_tpu = flag;
 869         pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
 870                                 dev, flag);
 871         return 0;
 872 }
 873
 874 int se_dev_set_emulate_tpws(struct se_device *dev, int flag)
 875 {
 876         if ((flag != 0) && (flag != 1)) {
 877                 pr_err("Illegal value %d\n", flag);
 878                 return -EINVAL;
 879         }
 880         /*
 881          * We expect this value to be non-zero when generic Block Layer
 882          * Discard supported is detected iblock_create_virtdevice().
 883          */
 884         if (flag && !dev->dev_attrib.max_unmap_block_desc_count) {
 885                 pr_err("Generic Block Discard not supported\n");
 886                 return -ENOSYS;
 887         }
 888
 889         dev->dev_attrib.emulate_tpws = flag;
 890         pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
 891                                 dev, flag);
 892         return 0;
 893 }
 894
 895 int se_dev_set_emulate_caw(struct se_device *dev, int flag)
 896 {
 897         if (flag != 0 && flag != 1) {
 898                 pr_err("Illegal value %d\n", flag);
 899                 return -EINVAL;
 900         }
 901         dev->dev_attrib.emulate_caw = flag;
 902         pr_debug("dev[%p]: SE Device CompareAndWrite (AtomicTestandSet): %d\n",
 903                  dev, flag);
 904
 905         return 0;
 906 }
 907
 908 int se_dev_set_emulate_3pc(struct se_device *dev, int flag)
 909 {
 910         if (flag != 0 && flag != 1) {
 911                 pr_err("Illegal value %d\n", flag);
 912                 return -EINVAL;
 913         }
 914         dev->dev_attrib.emulate_3pc = flag;
 915         pr_debug("dev[%p]: SE Device 3rd Party Copy (EXTENDED_COPY): %d\n",
 916                 dev, flag);
 917
 918         return 0;
 919 }
 920
 921 int se_dev_set_pi_prot_type(struct se_device *dev, int flag)
 922 {
 923         int rc, old_prot = dev->dev_attrib.pi_prot_type;
 924
 925         if (flag != 0 && flag != 1 && flag != 2 && flag != 3) {
 926                 pr_err("Illegal value %d for pi_prot_type\n", flag);
 927                 return -EINVAL;
 928         }
 929         if (flag == 2) {
 930                 pr_err("DIF TYPE2 protection currently not supported\n");
 931                 return -ENOSYS;
 932         }
 933         if (dev->dev_attrib.hw_pi_prot_type) {
 934                 pr_warn("DIF protection enabled on underlying hardware,"
 935                         " ignoring\n");
 936                 return 0;
 937         }
 938         if (!dev->transport->init_prot || !dev->transport->free_prot) {
 939                 /* 0 is only allowed value for non-supporting backends */
 940                 if (flag == 0)
 941                         return 0;
 942
 943                 pr_err("DIF protection not supported by backend: %s\n",
 944                        dev->transport->name);
 945                 return -ENOSYS;
 946         }
 947         if (!(dev->dev_flags & DF_CONFIGURED)) {
 948                 pr_err("DIF protection requires device to be configured\n");
 949                 return -ENODEV;
 950         }
 951         if (dev->export_count) {
 952                 pr_err("dev[%p]: Unable to change SE Device PROT type while"
 953                        " export_count is %d\n", dev, dev->export_count);
 954                 return -EINVAL;
 955         }
 956
 957         dev->dev_attrib.pi_prot_type = flag;
 958
 959         if (flag && !old_prot) {
 960                 rc = dev->transport->init_prot(dev);
 961                 if (rc) {
 962                         dev->dev_attrib.pi_prot_type = old_prot;
 963                         return rc;
 964                 }
 965
 966         } else if (!flag && old_prot) {
 967                 dev->transport->free_prot(dev);
 968         }
 969         pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag);
 970
 971         return 0;
 972 }
 973
 974 int se_dev_set_pi_prot_format(struct se_device *dev, int flag)
 975 {
 976         int rc;
 977
 978         if (!flag)
 979                 return 0;
 980
 981         if (flag != 1) {
 982                 pr_err("Illegal value %d for pi_prot_format\n", flag);
 983                 return -EINVAL;
 984         }
 985         if (!dev->transport->format_prot) {
 986                 pr_err("DIF protection format not supported by backend %s\n",
 987                        dev->transport->name);
 988                 return -ENOSYS;
 989         }
 990         if (!(dev->dev_flags & DF_CONFIGURED)) {
 991                 pr_err("DIF protection format requires device to be configured\n");
 992                 return -ENODEV;
 993         }
 994         if (dev->export_count) {
 995                 pr_err("dev[%p]: Unable to format SE Device PROT type while"
 996                        " export_count is %d\n", dev, dev->export_count);
 997                 return -EINVAL;
 998         }
 999
1000         rc = dev->transport->format_prot(dev);
1001         if (rc)
1002                 return rc;
1003
1004         pr_debug("dev[%p]: SE Device Protection Format complete\n", dev);
1005
1006         return 0;
1007 }
1008
1009 int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
1010 {
1011         if ((flag != 0) && (flag != 1)) {
1012                 pr_err("Illegal value %d\n", flag);
1013                 return -EINVAL;
1014         }
1015         dev->dev_attrib.enforce_pr_isids = flag;
1016         pr_debug("dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev,
1017                 (dev->dev_attrib.enforce_pr_isids) ? "Enabled" : "Disabled");
1018         return 0;
1019 }
1020
1021 int se_dev_set_force_pr_aptpl(struct se_device *dev, int flag)
1022 {
1023         if ((flag != 0) && (flag != 1)) {
1024                 printk(KERN_ERR "Illegal value %d\n", flag);
1025                 return -EINVAL;
1026         }
1027         if (dev->export_count) {
1028                 pr_err("dev[%p]: Unable to set force_pr_aptpl while"
1029                        " export_count is %d\n", dev, dev->export_count);
1030                 return -EINVAL;
1031         }
1032
1033         dev->dev_attrib.force_pr_aptpl = flag;
1034         pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", dev, flag);
1035         return 0;
1036 }
1037
1038 int se_dev_set_is_nonrot(struct se_device *dev, int flag)
1039 {
1040         if ((flag != 0) && (flag != 1)) {
1041                 printk(KERN_ERR "Illegal value %d\n", flag);
1042                 return -EINVAL;
1043         }
1044         dev->dev_attrib.is_nonrot = flag;
1045         pr_debug("dev[%p]: SE Device is_nonrot bit: %d\n",
1046                dev, flag);
1047         return 0;
1048 }
1049
1050 int se_dev_set_emulate_rest_reord(struct se_device *dev, int flag)
1051 {
1052         if (flag != 0) {
1053                 printk(KERN_ERR "dev[%p]: SE Device emulatation of restricted"
1054                         " reordering not implemented\n", dev);
1055                 return -ENOSYS;
1056         }
1057         dev->dev_attrib.emulate_rest_reord = flag;
1058         pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", dev, flag);
1059         return 0;
1060 }
1061
1062 /*
1063  * Note, this can only be called on unexported SE Device Object.
1064  */
1065 int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
1066 {
1067         if (dev->export_count) {
1068                 pr_err("dev[%p]: Unable to change SE Device TCQ while"
1069                         " export_count is %d\n",
1070                         dev, dev->export_count);
1071                 return -EINVAL;
1072         }
1073         if (!queue_depth) {
1074                 pr_err("dev[%p]: Illegal ZERO value for queue"
1075                         "_depth\n", dev);
1076                 return -EINVAL;
1077         }
1078
1079         if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1080                 if (queue_depth > dev->dev_attrib.hw_queue_depth) {
1081                         pr_err("dev[%p]: Passed queue_depth: %u"
1082                                 " exceeds TCM/SE_Device TCQ: %u\n",
1083                                 dev, queue_depth,
1084                                 dev->dev_attrib.hw_queue_depth);
1085                         return -EINVAL;
1086                 }
1087         } else {
1088                 if (queue_depth > dev->dev_attrib.queue_depth) {
1089                         if (queue_depth > dev->dev_attrib.hw_queue_depth) {
1090                                 pr_err("dev[%p]: Passed queue_depth:"
1091                                         " %u exceeds TCM/SE_Device MAX"
1092                                         " TCQ: %u\n", dev, queue_depth,
1093                                         dev->dev_attrib.hw_queue_depth);
1094                                 return -EINVAL;
1095                         }
1096                 }
1097         }
1098
1099         dev->dev_attrib.queue_depth = dev->queue_depth = queue_depth;
1100         pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n",
1101                         dev, queue_depth);
1102         return 0;
1103 }
1104
1105 int se_dev_set_fabric_max_sectors(struct se_device *dev, u32 fabric_max_sectors)
1106 {
1107         int block_size = dev->dev_attrib.block_size;
1108
1109         if (dev->export_count) {
1110                 pr_err("dev[%p]: Unable to change SE Device"
1111                         " fabric_max_sectors while export_count is %d\n",
1112                         dev, dev->export_count);
1113                 return -EINVAL;
1114         }
1115         if (!fabric_max_sectors) {
1116                 pr_err("dev[%p]: Illegal ZERO value for"
1117                         " fabric_max_sectors\n", dev);
1118                 return -EINVAL;
1119         }
1120         if (fabric_max_sectors < DA_STATUS_MAX_SECTORS_MIN) {
1121                 pr_err("dev[%p]: Passed fabric_max_sectors: %u less than"
1122                         " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, fabric_max_sectors,
1123                                 DA_STATUS_MAX_SECTORS_MIN);
1124                 return -EINVAL;
1125         }
1126         if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1127                 if (fabric_max_sectors > dev->dev_attrib.hw_max_sectors) {
1128                         pr_err("dev[%p]: Passed fabric_max_sectors: %u"
1129                                 " greater than TCM/SE_Device max_sectors:"
1130                                 " %u\n", dev, fabric_max_sectors,
1131                                 dev->dev_attrib.hw_max_sectors);
1132                          return -EINVAL;
1133                 }
1134         } else {
1135                 if (fabric_max_sectors > DA_STATUS_MAX_SECTORS_MAX) {
1136                         pr_err("dev[%p]: Passed fabric_max_sectors: %u"
1137                                 " greater than DA_STATUS_MAX_SECTORS_MAX:"
1138                                 " %u\n", dev, fabric_max_sectors,
1139                                 DA_STATUS_MAX_SECTORS_MAX);
1140                         return -EINVAL;
1141                 }
1142         }
1143         /*
1144          * Align max_sectors down to PAGE_SIZE to follow transport_allocate_data_tasks()
1145          */
1146         if (!block_size) {
1147                 block_size = 512;
1148                 pr_warn("Defaulting to 512 for zero block_size\n");
1149         }
1150         fabric_max_sectors = se_dev_align_max_sectors(fabric_max_sectors,
1151                                                       block_size);
1152
1153         dev->dev_attrib.fabric_max_sectors = fabric_max_sectors;
1154         pr_debug("dev[%p]: SE Device max_sectors changed to %u\n",
1155                         dev, fabric_max_sectors);
1156         return 0;
1157 }
1158
1159 int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
1160 {
1161         if (dev->export_count) {
1162                 pr_err("dev[%p]: Unable to change SE Device"
1163                         " optimal_sectors while export_count is %d\n",
1164                         dev, dev->export_count);
1165                 return -EINVAL;
1166         }
1167         if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1168                 pr_err("dev[%p]: Passed optimal_sectors cannot be"
1169                                 " changed for TCM/pSCSI\n", dev);
1170                 return -EINVAL;
1171         }
1172         if (optimal_sectors > dev->dev_attrib.fabric_max_sectors) {
1173                 pr_err("dev[%p]: Passed optimal_sectors %u cannot be"
1174                         " greater than fabric_max_sectors: %u\n", dev,
1175                         optimal_sectors, dev->dev_attrib.fabric_max_sectors);
1176                 return -EINVAL;
1177         }
1178
1179         dev->dev_attrib.optimal_sectors = optimal_sectors;
1180         pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n",
1181                         dev, optimal_sectors);
1182         return 0;
1183 }
1184
1185 int se_dev_set_block_size(struct se_device *dev, u32 block_size)
1186 {
1187         if (dev->export_count) {
1188                 pr_err("dev[%p]: Unable to change SE Device block_size"
1189                         " while export_count is %d\n",
1190                         dev, dev->export_count);
1191                 return -EINVAL;
1192         }
1193
1194         if ((block_size != 512) &&
1195             (block_size != 1024) &&
1196             (block_size != 2048) &&
1197             (block_size != 4096)) {
1198                 pr_err("dev[%p]: Illegal value for block_device: %u"
1199                         " for SE device, must be 512, 1024, 2048 or 4096\n",
1200                         dev, block_size);
1201                 return -EINVAL;
1202         }
1203
1204         if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1205                 pr_err("dev[%p]: Not allowed to change block_size for"
1206                         " Physical Device, use for Linux/SCSI to change"
1207                         " block_size for underlying hardware\n", dev);
1208                 return -EINVAL;
1209         }
1210
1211         dev->dev_attrib.block_size = block_size;
1212         pr_debug("dev[%p]: SE Device block_size changed to %u\n",
1213                         dev, block_size);
1214
1215         if (dev->dev_attrib.max_bytes_per_io)
1216                 dev->dev_attrib.hw_max_sectors =
1217                         dev->dev_attrib.max_bytes_per_io / block_size;
1218
1219         return 0;
1220 }
1221
1222 struct se_lun *core_dev_add_lun(
1223         struct se_portal_group *tpg,
1224         struct se_device *dev,
1225         u32 unpacked_lun)
1226 {
1227         struct se_lun *lun;
1228         int rc;
1229
1230         lun = core_tpg_alloc_lun(tpg, unpacked_lun);
1231         if (IS_ERR(lun))
1232                 return lun;
1233
1234         rc = core_tpg_add_lun(tpg, lun,
1235                                 TRANSPORT_LUNFLAGS_READ_WRITE, dev);
1236         if (rc < 0)
1237                 return ERR_PTR(rc);
1238
1239         pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from"
1240                 " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
1241                 tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
1242                 tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id);
1243         /*
1244          * Update LUN maps for dynamically added initiators when
1245          * generate_node_acl is enabled.
1246          */
1247         if (tpg->se_tpg_tfo->tpg_check_demo_mode(tpg)) {
1248                 struct se_node_acl *acl;
1249                 spin_lock_irq(&tpg->acl_node_lock);
1250                 list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
1251                         if (acl->dynamic_node_acl &&
1252                             (!tpg->se_tpg_tfo->tpg_check_demo_mode_login_only ||
1253                              !tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg))) {
1254                                 spin_unlock_irq(&tpg->acl_node_lock);
1255                                 core_tpg_add_node_to_devs(acl, tpg);
1256                                 spin_lock_irq(&tpg->acl_node_lock);
1257                         }
1258                 }
1259                 spin_unlock_irq(&tpg->acl_node_lock);
1260         }
1261
1262         return lun;
1263 }
1264
1265 /*      core_dev_del_lun():
1266  *
1267  *
1268  */
1269 void core_dev_del_lun(
1270         struct se_portal_group *tpg,
1271         struct se_lun *lun)
1272 {
1273         pr_debug("%s_TPG[%u]_LUN[%u] - Deactivating %s Logical Unit from"
1274                 " device object\n", tpg->se_tpg_tfo->get_fabric_name(),
1275                 tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
1276                 tpg->se_tpg_tfo->get_fabric_name());
1277
1278         core_tpg_remove_lun(tpg, lun);
1279 }
1280
1281 struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun)
1282 {
1283         struct se_lun *lun;
1284
1285         spin_lock(&tpg->tpg_lun_lock);
1286         if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
1287                 pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS"
1288                         "_PER_TPG-1: %u for Target Portal Group: %hu\n",
1289                         tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1290                         TRANSPORT_MAX_LUNS_PER_TPG-1,
1291                         tpg->se_tpg_tfo->tpg_get_tag(tpg));
1292                 spin_unlock(&tpg->tpg_lun_lock);
1293                 return NULL;
1294         }
1295         lun = tpg->tpg_lun_list[unpacked_lun];
1296
1297         if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) {
1298                 pr_err("%s Logical Unit Number: %u is not free on"
1299                         " Target Portal Group: %hu, ignoring request.\n",
1300                         tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1301                         tpg->se_tpg_tfo->tpg_get_tag(tpg));
1302                 spin_unlock(&tpg->tpg_lun_lock);
1303                 return NULL;
1304         }
1305         spin_unlock(&tpg->tpg_lun_lock);
1306
1307         return lun;
1308 }
1309
1310 /*      core_dev_get_lun():
1311  *
1312  *
1313  */
1314 static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun)
1315 {
1316         struct se_lun *lun;
1317
1318         spin_lock(&tpg->tpg_lun_lock);
1319         if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
1320                 pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER"
1321                         "_TPG-1: %u for Target Portal Group: %hu\n",
1322                         tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1323                         TRANSPORT_MAX_LUNS_PER_TPG-1,
1324                         tpg->se_tpg_tfo->tpg_get_tag(tpg));
1325                 spin_unlock(&tpg->tpg_lun_lock);
1326                 return NULL;
1327         }
1328         lun = tpg->tpg_lun_list[unpacked_lun];
1329
1330         if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) {
1331                 pr_err("%s Logical Unit Number: %u is not active on"
1332                         " Target Portal Group: %hu, ignoring request.\n",
1333                         tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1334                         tpg->se_tpg_tfo->tpg_get_tag(tpg));
1335                 spin_unlock(&tpg->tpg_lun_lock);
1336                 return NULL;
1337         }
1338         spin_unlock(&tpg->tpg_lun_lock);
1339
1340         return lun;
1341 }
1342
1343 struct se_lun_acl *core_dev_init_initiator_node_lun_acl(
1344         struct se_portal_group *tpg,
1345         struct se_node_acl *nacl,
1346         u32 mapped_lun,
1347         int *ret)
1348 {
1349         struct se_lun_acl *lacl;
1350
1351         if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) {
1352                 pr_err("%s InitiatorName exceeds maximum size.\n",
1353                         tpg->se_tpg_tfo->get_fabric_name());
1354                 *ret = -EOVERFLOW;
1355                 return NULL;
1356         }
1357         lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL);
1358         if (!lacl) {
1359                 pr_err("Unable to allocate memory for struct se_lun_acl.\n");
1360                 *ret = -ENOMEM;
1361                 return NULL;
1362         }
1363
1364         INIT_LIST_HEAD(&lacl->lacl_list);
1365         lacl->mapped_lun = mapped_lun;
1366         lacl->se_lun_nacl = nacl;
1367         snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s",
1368                  nacl->initiatorname);
1369
1370         return lacl;
1371 }
1372
1373 int core_dev_add_initiator_node_lun_acl(
1374         struct se_portal_group *tpg,
1375         struct se_lun_acl *lacl,
1376         u32 unpacked_lun,
1377         u32 lun_access)
1378 {
1379         struct se_lun *lun;
1380         struct se_node_acl *nacl;
1381
1382         lun = core_dev_get_lun(tpg, unpacked_lun);
1383         if (!lun) {
1384                 pr_err("%s Logical Unit Number: %u is not active on"
1385                         " Target Portal Group: %hu, ignoring request.\n",
1386                         tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
1387                         tpg->se_tpg_tfo->tpg_get_tag(tpg));
1388                 return -EINVAL;
1389         }
1390
1391         nacl = lacl->se_lun_nacl;
1392         if (!nacl)
1393                 return -EINVAL;
1394
1395         if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) &&
1396             (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE))
1397                 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
1398
1399         lacl->se_lun = lun;
1400
1401         if (core_enable_device_list_for_node(lun, lacl, lacl->mapped_lun,
1402                         lun_access, nacl, tpg) < 0)
1403                 return -EINVAL;
1404
1405         spin_lock(&lun->lun_acl_lock);
1406         list_add_tail(&lacl->lacl_list, &lun->lun_acl_list);
1407         atomic_inc_mb(&lun->lun_acl_count);
1408         spin_unlock(&lun->lun_acl_lock);
1409
1410         pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for "
1411                 " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(),
1412                 tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun,
1413                 (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO",
1414                 lacl->initiatorname);
1415         /*
1416          * Check to see if there are any existing persistent reservation APTPL
1417          * pre-registrations that need to be enabled for this LUN ACL..
1418          */
1419         core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, nacl,
1420                                             lacl->mapped_lun);
1421         return 0;
1422 }
1423
1424 /*      core_dev_del_initiator_node_lun_acl():
1425  *
1426  *
1427  */
1428 int core_dev_del_initiator_node_lun_acl(
1429         struct se_portal_group *tpg,
1430         struct se_lun *lun,
1431         struct se_lun_acl *lacl)
1432 {
1433         struct se_node_acl *nacl;
1434
1435         nacl = lacl->se_lun_nacl;
1436         if (!nacl)
1437                 return -EINVAL;
1438
1439         spin_lock(&lun->lun_acl_lock);
1440         list_del(&lacl->lacl_list);
1441         atomic_dec_mb(&lun->lun_acl_count);
1442         spin_unlock(&lun->lun_acl_lock);
1443
1444         core_disable_device_list_for_node(lun, NULL, lacl->mapped_lun,
1445                 TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg);
1446
1447         lacl->se_lun = NULL;
1448
1449         pr_debug("%s_TPG[%hu]_LUN[%u] - Removed ACL for"
1450                 " InitiatorNode: %s Mapped LUN: %u\n",
1451                 tpg->se_tpg_tfo->get_fabric_name(),
1452                 tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
1453                 lacl->initiatorname, lacl->mapped_lun);
1454
1455         return 0;
1456 }
1457
1458 void core_dev_free_initiator_node_lun_acl(
1459         struct se_portal_group *tpg,
1460         struct se_lun_acl *lacl)
1461 {
1462         pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s"
1463                 " Mapped LUN: %u\n", tpg->se_tpg_tfo->get_fabric_name(),
1464                 tpg->se_tpg_tfo->tpg_get_tag(tpg),
1465                 tpg->se_tpg_tfo->get_fabric_name(),
1466                 lacl->initiatorname, lacl->mapped_lun);
1467
1468         kfree(lacl);
1469 }
1470
1471 static void scsi_dump_inquiry(struct se_device *dev)
1472 {
1473         struct t10_wwn *wwn = &dev->t10_wwn;
1474         char buf[17];
1475         int i, device_type;
1476         /*
1477          * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer
1478          */
1479         for (i = 0; i < 8; i++)
1480                 if (wwn->vendor[i] >= 0x20)
1481                         buf[i] = wwn->vendor[i];
1482                 else
1483                         buf[i] = ' ';
1484         buf[i] = '\0';
1485         pr_debug("  Vendor: %s\n", buf);
1486
1487         for (i = 0; i < 16; i++)
1488                 if (wwn->model[i] >= 0x20)
1489                         buf[i] = wwn->model[i];
1490                 else
1491                         buf[i] = ' ';
1492         buf[i] = '\0';
1493         pr_debug("  Model: %s\n", buf);
1494
1495         for (i = 0; i < 4; i++)
1496                 if (wwn->revision[i] >= 0x20)
1497                         buf[i] = wwn->revision[i];
1498                 else
1499                         buf[i] = ' ';
1500         buf[i] = '\0';
1501         pr_debug("  Revision: %s\n", buf);
1502
1503         device_type = dev->transport->get_device_type(dev);
1504         pr_debug("  Type:   %s ", scsi_device_type(device_type));
1505 }
1506
1507 struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
1508 {
1509         struct se_device *dev;
1510         struct se_lun *xcopy_lun;
1511
1512         dev = hba->transport->alloc_device(hba, name);
1513         if (!dev)
1514                 return NULL;
1515
1516         dev->dev_link_magic = SE_DEV_LINK_MAGIC;
1517         dev->se_hba = hba;
1518         dev->transport = hba->transport;
1519         dev->prot_length = sizeof(struct se_dif_v1_tuple);
1520
1521         INIT_LIST_HEAD(&dev->dev_list);
1522         INIT_LIST_HEAD(&dev->dev_sep_list);
1523         INIT_LIST_HEAD(&dev->dev_tmr_list);
1524         INIT_LIST_HEAD(&dev->delayed_cmd_list);
1525         INIT_LIST_HEAD(&dev->state_list);
1526         INIT_LIST_HEAD(&dev->qf_cmd_list);
1527         INIT_LIST_HEAD(&dev->g_dev_node);
1528         spin_lock_init(&dev->execute_task_lock);
1529         spin_lock_init(&dev->delayed_cmd_lock);
1530         spin_lock_init(&dev->dev_reservation_lock);
1531         spin_lock_init(&dev->se_port_lock);
1532         spin_lock_init(&dev->se_tmr_lock);
1533         spin_lock_init(&dev->qf_cmd_lock);
1534         sema_init(&dev->caw_sem, 1);
1535         atomic_set(&dev->dev_ordered_id, 0);
1536         INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list);
1537         spin_lock_init(&dev->t10_wwn.t10_vpd_lock);
1538         INIT_LIST_HEAD(&dev->t10_pr.registration_list);
1539         INIT_LIST_HEAD(&dev->t10_pr.aptpl_reg_list);
1540         spin_lock_init(&dev->t10_pr.registration_lock);
1541         spin_lock_init(&dev->t10_pr.aptpl_reg_lock);
1542         INIT_LIST_HEAD(&dev->t10_alua.tg_pt_gps_list);
1543         spin_lock_init(&dev->t10_alua.tg_pt_gps_lock);
1544         INIT_LIST_HEAD(&dev->t10_alua.lba_map_list);
1545         spin_lock_init(&dev->t10_alua.lba_map_lock);
1546
1547         dev->t10_wwn.t10_dev = dev;
1548         dev->t10_alua.t10_dev = dev;
1549
1550         dev->dev_attrib.da_dev = dev;
1551         dev->dev_attrib.emulate_model_alias = DA_EMULATE_MODEL_ALIAS;
1552         dev->dev_attrib.emulate_dpo = DA_EMULATE_DPO;
1553         dev->dev_attrib.emulate_fua_write = DA_EMULATE_FUA_WRITE;
1554         dev->dev_attrib.emulate_fua_read = DA_EMULATE_FUA_READ;
1555         dev->dev_attrib.emulate_write_cache = DA_EMULATE_WRITE_CACHE;
1556         dev->dev_attrib.emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL;
1557         dev->dev_attrib.emulate_tas = DA_EMULATE_TAS;
1558         dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU;
1559         dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS;
1560         dev->dev_attrib.emulate_caw = DA_EMULATE_CAW;
1561         dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC;
1562         dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT;
1563         dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
1564         dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL;
1565         dev->dev_attrib.is_nonrot = DA_IS_NONROT;
1566         dev->dev_attrib.emulate_rest_reord = DA_EMULATE_REST_REORD;
1567         dev->dev_attrib.max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT;
1568         dev->dev_attrib.max_unmap_block_desc_count =
1569                 DA_MAX_UNMAP_BLOCK_DESC_COUNT;
1570         dev->dev_attrib.unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT;
1571         dev->dev_attrib.unmap_granularity_alignment =
1572                                 DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT;
1573         dev->dev_attrib.max_write_same_len = DA_MAX_WRITE_SAME_LEN;
1574         dev->dev_attrib.fabric_max_sectors = DA_FABRIC_MAX_SECTORS;
1575         dev->dev_attrib.optimal_sectors = DA_FABRIC_MAX_SECTORS;
1576
1577         xcopy_lun = &dev->xcopy_lun;
1578         xcopy_lun->lun_se_dev = dev;
1579         init_completion(&xcopy_lun->lun_shutdown_comp);
1580         INIT_LIST_HEAD(&xcopy_lun->lun_acl_list);
1581         spin_lock_init(&xcopy_lun->lun_acl_lock);
1582         spin_lock_init(&xcopy_lun->lun_sep_lock);
1583         init_completion(&xcopy_lun->lun_ref_comp);
1584
1585         return dev;
1586 }
1587
1588 int target_configure_device(struct se_device *dev)
1589 {
1590         struct se_hba *hba = dev->se_hba;
1591         int ret;
1592
1593         if (dev->dev_flags & DF_CONFIGURED) {
1594                 pr_err("se_dev->se_dev_ptr already set for storage"
1595                                 " object\n");
1596                 return -EEXIST;
1597         }
1598
1599         ret = dev->transport->configure_device(dev);
1600         if (ret)
1601                 goto out;
1602         dev->dev_flags |= DF_CONFIGURED;
1603
1604         /*
1605          * XXX: there is not much point to have two different values here..
1606          */
1607         dev->dev_attrib.block_size = dev->dev_attrib.hw_block_size;
1608         dev->dev_attrib.queue_depth = dev->dev_attrib.hw_queue_depth;
1609
1610         /*
1611          * Align max_hw_sectors down to PAGE_SIZE I/O transfers
1612          */
1613         dev->dev_attrib.hw_max_sectors =
1614                 se_dev_align_max_sectors(dev->dev_attrib.hw_max_sectors,
1615                                          dev->dev_attrib.hw_block_size);
1616
1617         dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX);
1618         dev->creation_time = get_jiffies_64();
1619
1620         ret = core_setup_alua(dev);
1621         if (ret)
1622                 goto out;
1623
1624         /*
1625          * Startup the struct se_device processing thread
1626          */
1627         dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1,
1628                                       dev->transport->name);
1629         if (!dev->tmr_wq) {
1630                 pr_err("Unable to create tmr workqueue for %s\n",
1631                         dev->transport->name);
1632                 ret = -ENOMEM;
1633                 goto out_free_alua;
1634         }
1635
1636         /*
1637          * Setup work_queue for QUEUE_FULL
1638          */
1639         INIT_WORK(&dev->qf_work_queue, target_qf_do_work);
1640
1641         /*
1642          * Preload the initial INQUIRY const values if we are doing
1643          * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI
1644          * passthrough because this is being provided by the backend LLD.
1645          */
1646         if (dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) {
1647                 strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8);
1648                 strncpy(&dev->t10_wwn.model[0],
1649                         dev->transport->inquiry_prod, 16);
1650                 strncpy(&dev->t10_wwn.revision[0],
1651                         dev->transport->inquiry_rev, 4);
1652         }
1653
1654         scsi_dump_inquiry(dev);
1655
1656         spin_lock(&hba->device_lock);
1657         hba->dev_count++;
1658         spin_unlock(&hba->device_lock);
1659
1660         mutex_lock(&g_device_mutex);
1661         list_add_tail(&dev->g_dev_node, &g_device_list);
1662         mutex_unlock(&g_device_mutex);
1663
1664         return 0;
1665
1666 out_free_alua:
1667         core_alua_free_lu_gp_mem(dev);
1668 out:
1669         se_release_vpd_for_dev(dev);
1670         return ret;
1671 }
1672
1673 void target_free_device(struct se_device *dev)
1674 {
1675         struct se_hba *hba = dev->se_hba;
1676
1677         WARN_ON(!list_empty(&dev->dev_sep_list));
1678
1679         if (dev->dev_flags & DF_CONFIGURED) {
1680                 destroy_workqueue(dev->tmr_wq);
1681
1682                 mutex_lock(&g_device_mutex);
1683                 list_del(&dev->g_dev_node);
1684                 mutex_unlock(&g_device_mutex);
1685
1686                 spin_lock(&hba->device_lock);
1687                 hba->dev_count--;
1688                 spin_unlock(&hba->device_lock);
1689         }
1690
1691         core_alua_free_lu_gp_mem(dev);
1692         core_alua_set_lba_map(dev, NULL, 0, 0);
1693         core_scsi3_free_all_registrations(dev);
1694         se_release_vpd_for_dev(dev);
1695
1696         if (dev->transport->free_prot)
1697                 dev->transport->free_prot(dev);
1698
1699         dev->transport->free_device(dev);
1700 }
1701
1702 int core_dev_setup_virtual_lun0(void)
1703 {
1704         struct se_hba *hba;
1705         struct se_device *dev;
1706         char buf[] = "rd_pages=8,rd_nullio=1";
1707         int ret;
1708
1709         hba = core_alloc_hba("rd_mcp", 0, HBA_FLAGS_INTERNAL_USE);
1710         if (IS_ERR(hba))
1711                 return PTR_ERR(hba);
1712
1713         dev = target_alloc_device(hba, "virt_lun0");
1714         if (!dev) {
1715                 ret = -ENOMEM;
1716                 goto out_free_hba;
1717         }
1718
1719         hba->transport->set_configfs_dev_params(dev, buf, sizeof(buf));
1720
1721         ret = target_configure_device(dev);
1722         if (ret)
1723                 goto out_free_se_dev;
1724
1725         lun0_hba = hba;
1726         g_lun0_dev = dev;
1727         return 0;
1728
1729 out_free_se_dev:
1730         target_free_device(dev);
1731 out_free_hba:
1732         core_delete_hba(hba);
1733         return ret;
1734 }
1735
1736
1737 void core_dev_release_virtual_lun0(void)
1738 {
1739         struct se_hba *hba = lun0_hba;
1740
1741         if (!hba)
1742                 return;
1743
1744         if (g_lun0_dev)
1745                 target_free_device(g_lun0_dev);
1746         core_delete_hba(hba);
1747 }