1 /*******************************************************************************
2 * Filename: target_core_device.c (based on iscsi_target_device.c)
4 * This file contains the iSCSI Virtual Device and Disk Transport
5 * agnostic related functions.
7 * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc.
8 * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved.
9 * Copyright (c) 2007-2010 Rising Tide Systems
10 * Copyright (c) 2008-2010 Linux-iSCSI.org
12 * Nicholas A. Bellinger <nab@kernel.org>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
28 ******************************************************************************/
30 #include <linux/net.h>
31 #include <linux/string.h>
32 #include <linux/delay.h>
33 #include <linux/timer.h>
34 #include <linux/slab.h>
35 #include <linux/spinlock.h>
36 #include <linux/kthread.h>
40 #include <scsi/scsi.h>
41 #include <scsi/scsi_device.h>
43 #include <target/target_core_base.h>
44 #include <target/target_core_device.h>
45 #include <target/target_core_tpg.h>
46 #include <target/target_core_transport.h>
47 #include <target/target_core_fabric_ops.h>
49 #include "target_core_alua.h"
50 #include "target_core_hba.h"
51 #include "target_core_pr.h"
52 #include "target_core_ua.h"
54 static void se_dev_start(struct se_device *dev);
55 static void se_dev_stop(struct se_device *dev);
57 int transport_get_lun_for_cmd(
58 struct se_cmd *se_cmd,
61 struct se_dev_entry *deve;
62 struct se_lun *se_lun = NULL;
63 struct se_session *se_sess = SE_SESS(se_cmd);
67 if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
68 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
69 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
73 spin_lock_irq(&SE_NODE_ACL(se_sess)->device_list_lock);
74 deve = se_cmd->se_deve =
75 &SE_NODE_ACL(se_sess)->device_list[unpacked_lun];
76 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
79 deve->total_bytes += se_cmd->data_length;
81 if (se_cmd->data_direction == DMA_TO_DEVICE) {
83 TRANSPORT_LUNFLAGS_READ_ONLY) {
87 deve->write_bytes += se_cmd->data_length;
88 } else if (se_cmd->data_direction ==
90 deve->read_bytes += se_cmd->data_length;
95 se_lun = se_cmd->se_lun = deve->se_lun;
96 se_cmd->pr_res_key = deve->pr_res_key;
97 se_cmd->orig_fe_lun = unpacked_lun;
98 se_cmd->se_orig_obj_ptr = SE_LUN(se_cmd)->lun_se_dev;
99 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
102 spin_unlock_irq(&SE_NODE_ACL(se_sess)->device_list_lock);
106 se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED;
107 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
108 printk("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN"
109 " Access for 0x%08x\n",
110 CMD_TFO(se_cmd)->get_fabric_name(),
115 * Use the se_portal_group->tpg_virt_lun0 to allow for
116 * REPORT_LUNS, et al to be returned when no active
117 * MappedLUN=0 exists for this Initiator Port.
119 if (unpacked_lun != 0) {
120 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
121 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
122 printk("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
123 " Access for 0x%08x\n",
124 CMD_TFO(se_cmd)->get_fabric_name(),
129 * Force WRITE PROTECT for virtual LUN 0
131 if ((se_cmd->data_direction != DMA_FROM_DEVICE) &&
132 (se_cmd->data_direction != DMA_NONE)) {
133 se_cmd->scsi_sense_reason = TCM_WRITE_PROTECTED;
134 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
138 printk("TARGET_CORE[%s]: Using virtual LUN0! :-)\n",
139 CMD_TFO(se_cmd)->get_fabric_name());
141 se_lun = se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0;
142 se_cmd->orig_fe_lun = 0;
143 se_cmd->se_orig_obj_ptr = SE_LUN(se_cmd)->lun_se_dev;
144 se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD;
148 * Determine if the struct se_lun is online.
150 /* #warning FIXME: Check for LUN_RESET + UNIT Attention */
151 if (se_dev_check_online(se_lun->lun_se_dev) != 0) {
152 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
153 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
158 struct se_device *dev = se_lun->lun_se_dev;
159 spin_lock_irq(&dev->stats_lock);
161 if (se_cmd->data_direction == DMA_TO_DEVICE)
162 dev->write_bytes += se_cmd->data_length;
163 else if (se_cmd->data_direction == DMA_FROM_DEVICE)
164 dev->read_bytes += se_cmd->data_length;
165 spin_unlock_irq(&dev->stats_lock);
169 * Add the iscsi_cmd_t to the struct se_lun's cmd list. This list is used
170 * for tracking state of struct se_cmds during LUN shutdown events.
172 spin_lock_irqsave(&se_lun->lun_cmd_lock, flags);
173 list_add_tail(&se_cmd->se_lun_list, &se_lun->lun_cmd_list);
174 atomic_set(&T_TASK(se_cmd)->transport_lun_active, 1);
176 printk(KERN_INFO "Adding ITT: 0x%08x to LUN LIST[%d]\n",
177 CMD_TFO(se_cmd)->get_task_tag(se_cmd), se_lun->unpacked_lun);
179 spin_unlock_irqrestore(&se_lun->lun_cmd_lock, flags);
183 EXPORT_SYMBOL(transport_get_lun_for_cmd);
185 int transport_get_lun_for_tmr(
186 struct se_cmd *se_cmd,
189 struct se_device *dev = NULL;
190 struct se_dev_entry *deve;
191 struct se_lun *se_lun = NULL;
192 struct se_session *se_sess = SE_SESS(se_cmd);
193 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
195 if (unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) {
196 se_cmd->scsi_sense_reason = TCM_NON_EXISTENT_LUN;
197 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
201 spin_lock_irq(&SE_NODE_ACL(se_sess)->device_list_lock);
202 deve = se_cmd->se_deve =
203 &SE_NODE_ACL(se_sess)->device_list[unpacked_lun];
204 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
205 se_lun = se_cmd->se_lun = se_tmr->tmr_lun = deve->se_lun;
206 dev = se_lun->lun_se_dev;
207 se_cmd->pr_res_key = deve->pr_res_key;
208 se_cmd->orig_fe_lun = unpacked_lun;
209 se_cmd->se_orig_obj_ptr = SE_LUN(se_cmd)->lun_se_dev;
210 /* se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; */
212 spin_unlock_irq(&SE_NODE_ACL(se_sess)->device_list_lock);
215 printk(KERN_INFO "TARGET_CORE[%s]: Detected NON_EXISTENT_LUN"
216 " Access for 0x%08x\n",
217 CMD_TFO(se_cmd)->get_fabric_name(),
219 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
223 * Determine if the struct se_lun is online.
225 /* #warning FIXME: Check for LUN_RESET + UNIT Attention */
226 if (se_dev_check_online(se_lun->lun_se_dev) != 0) {
227 se_cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
230 se_tmr->tmr_dev = dev;
232 spin_lock(&dev->se_tmr_lock);
233 list_add_tail(&se_tmr->tmr_list, &dev->dev_tmr_list);
234 spin_unlock(&dev->se_tmr_lock);
238 EXPORT_SYMBOL(transport_get_lun_for_tmr);
241 * This function is called from core_scsi3_emulate_pro_register_and_move()
242 * and core_scsi3_decode_spec_i_port(), and will increment &deve->pr_ref_count
243 * when a matching rtpi is found.
245 struct se_dev_entry *core_get_se_deve_from_rtpi(
246 struct se_node_acl *nacl,
249 struct se_dev_entry *deve;
251 struct se_port *port;
252 struct se_portal_group *tpg = nacl->se_tpg;
255 spin_lock_irq(&nacl->device_list_lock);
256 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
257 deve = &nacl->device_list[i];
259 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
264 printk(KERN_ERR "%s device entries device pointer is"
265 " NULL, but Initiator has access.\n",
266 TPG_TFO(tpg)->get_fabric_name());
271 printk(KERN_ERR "%s device entries device pointer is"
272 " NULL, but Initiator has access.\n",
273 TPG_TFO(tpg)->get_fabric_name());
276 if (port->sep_rtpi != rtpi)
279 atomic_inc(&deve->pr_ref_count);
280 smp_mb__after_atomic_inc();
281 spin_unlock_irq(&nacl->device_list_lock);
285 spin_unlock_irq(&nacl->device_list_lock);
290 int core_free_device_list_for_node(
291 struct se_node_acl *nacl,
292 struct se_portal_group *tpg)
294 struct se_dev_entry *deve;
298 if (!nacl->device_list)
301 spin_lock_irq(&nacl->device_list_lock);
302 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
303 deve = &nacl->device_list[i];
305 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
309 printk(KERN_ERR "%s device entries device pointer is"
310 " NULL, but Initiator has access.\n",
311 TPG_TFO(tpg)->get_fabric_name());
316 spin_unlock_irq(&nacl->device_list_lock);
317 core_update_device_list_for_node(lun, NULL, deve->mapped_lun,
318 TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0);
319 spin_lock_irq(&nacl->device_list_lock);
321 spin_unlock_irq(&nacl->device_list_lock);
323 kfree(nacl->device_list);
324 nacl->device_list = NULL;
329 void core_dec_lacl_count(struct se_node_acl *se_nacl, struct se_cmd *se_cmd)
331 struct se_dev_entry *deve;
333 spin_lock_irq(&se_nacl->device_list_lock);
334 deve = &se_nacl->device_list[se_cmd->orig_fe_lun];
336 spin_unlock_irq(&se_nacl->device_list_lock);
341 void core_update_device_list_access(
344 struct se_node_acl *nacl)
346 struct se_dev_entry *deve;
348 spin_lock_irq(&nacl->device_list_lock);
349 deve = &nacl->device_list[mapped_lun];
350 if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
351 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
352 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
354 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
355 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
357 spin_unlock_irq(&nacl->device_list_lock);
362 /* core_update_device_list_for_node():
366 int core_update_device_list_for_node(
368 struct se_lun_acl *lun_acl,
371 struct se_node_acl *nacl,
372 struct se_portal_group *tpg,
375 struct se_port *port = lun->lun_sep;
376 struct se_dev_entry *deve = &nacl->device_list[mapped_lun];
379 * If the MappedLUN entry is being disabled, the entry in
380 * port->sep_alua_list must be removed now before clearing the
381 * struct se_dev_entry pointers below as logic in
382 * core_alua_do_transition_tg_pt() depends on these being present.
386 * deve->se_lun_acl will be NULL for demo-mode created LUNs
387 * that have not been explicitly concerted to MappedLUNs ->
388 * struct se_lun_acl, but we remove deve->alua_port_list from
389 * port->sep_alua_list. This also means that active UAs and
390 * NodeACL context specific PR metadata for demo-mode
391 * MappedLUN *deve will be released below..
393 spin_lock_bh(&port->sep_alua_lock);
394 list_del(&deve->alua_port_list);
395 spin_unlock_bh(&port->sep_alua_lock);
398 spin_lock_irq(&nacl->device_list_lock);
401 * Check if the call is handling demo mode -> explict LUN ACL
402 * transition. This transition must be for the same struct se_lun
403 * + mapped_lun that was setup in demo mode..
405 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS) {
406 if (deve->se_lun_acl != NULL) {
407 printk(KERN_ERR "struct se_dev_entry->se_lun_acl"
408 " already set for demo mode -> explict"
409 " LUN ACL transition\n");
410 spin_unlock_irq(&nacl->device_list_lock);
413 if (deve->se_lun != lun) {
414 printk(KERN_ERR "struct se_dev_entry->se_lun does"
415 " match passed struct se_lun for demo mode"
416 " -> explict LUN ACL transition\n");
417 spin_unlock_irq(&nacl->device_list_lock);
420 deve->se_lun_acl = lun_acl;
424 deve->se_lun_acl = lun_acl;
425 deve->mapped_lun = mapped_lun;
426 deve->lun_flags |= TRANSPORT_LUNFLAGS_INITIATOR_ACCESS;
429 if (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) {
430 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_ONLY;
431 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_WRITE;
433 deve->lun_flags &= ~TRANSPORT_LUNFLAGS_READ_WRITE;
434 deve->lun_flags |= TRANSPORT_LUNFLAGS_READ_ONLY;
438 spin_unlock_irq(&nacl->device_list_lock);
441 deve->creation_time = get_jiffies_64();
442 deve->attach_count++;
443 spin_unlock_irq(&nacl->device_list_lock);
445 spin_lock_bh(&port->sep_alua_lock);
446 list_add_tail(&deve->alua_port_list, &port->sep_alua_list);
447 spin_unlock_bh(&port->sep_alua_lock);
452 * Wait for any in process SPEC_I_PT=1 or REGISTER_AND_MOVE
453 * PR operation to complete.
455 spin_unlock_irq(&nacl->device_list_lock);
456 while (atomic_read(&deve->pr_ref_count) != 0)
458 spin_lock_irq(&nacl->device_list_lock);
460 * Disable struct se_dev_entry LUN ACL mapping
462 core_scsi3_ua_release_all(deve);
464 deve->se_lun_acl = NULL;
466 deve->creation_time = 0;
467 deve->attach_count--;
468 spin_unlock_irq(&nacl->device_list_lock);
470 core_scsi3_free_pr_reg_from_nacl(lun->lun_se_dev, nacl);
474 /* core_clear_lun_from_tpg():
478 void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg)
480 struct se_node_acl *nacl;
481 struct se_dev_entry *deve;
484 spin_lock_bh(&tpg->acl_node_lock);
485 list_for_each_entry(nacl, &tpg->acl_node_list, acl_list) {
486 spin_unlock_bh(&tpg->acl_node_lock);
488 spin_lock_irq(&nacl->device_list_lock);
489 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
490 deve = &nacl->device_list[i];
491 if (lun != deve->se_lun)
493 spin_unlock_irq(&nacl->device_list_lock);
495 core_update_device_list_for_node(lun, NULL,
496 deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS,
499 spin_lock_irq(&nacl->device_list_lock);
501 spin_unlock_irq(&nacl->device_list_lock);
503 spin_lock_bh(&tpg->acl_node_lock);
505 spin_unlock_bh(&tpg->acl_node_lock);
510 static struct se_port *core_alloc_port(struct se_device *dev)
512 struct se_port *port, *port_tmp;
514 port = kzalloc(sizeof(struct se_port), GFP_KERNEL);
516 printk(KERN_ERR "Unable to allocate struct se_port\n");
519 INIT_LIST_HEAD(&port->sep_alua_list);
520 INIT_LIST_HEAD(&port->sep_list);
521 atomic_set(&port->sep_tg_pt_secondary_offline, 0);
522 spin_lock_init(&port->sep_alua_lock);
523 mutex_init(&port->sep_tg_pt_md_mutex);
525 spin_lock(&dev->se_port_lock);
526 if (dev->dev_port_count == 0x0000ffff) {
527 printk(KERN_WARNING "Reached dev->dev_port_count =="
529 spin_unlock(&dev->se_port_lock);
534 * Allocate the next RELATIVE TARGET PORT IDENTIFER for this struct se_device
535 * Here is the table from spc4r17 section 7.7.3.8.
537 * Table 473 -- RELATIVE TARGET PORT IDENTIFIER field
541 * 1h Relative port 1, historically known as port A
542 * 2h Relative port 2, historically known as port B
543 * 3h to FFFFh Relative port 3 through 65 535
545 port->sep_rtpi = dev->dev_rpti_counter++;
546 if (!(port->sep_rtpi))
549 list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) {
551 * Make sure RELATIVE TARGET PORT IDENTIFER is unique
554 if (port->sep_rtpi == port_tmp->sep_rtpi)
557 spin_unlock(&dev->se_port_lock);
562 static void core_export_port(
563 struct se_device *dev,
564 struct se_portal_group *tpg,
565 struct se_port *port,
568 struct se_subsystem_dev *su_dev = SU_DEV(dev);
569 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL;
571 spin_lock(&dev->se_port_lock);
572 spin_lock(&lun->lun_sep_lock);
576 spin_unlock(&lun->lun_sep_lock);
578 list_add_tail(&port->sep_list, &dev->dev_sep_list);
579 spin_unlock(&dev->se_port_lock);
581 if (T10_ALUA(su_dev)->alua_type == SPC3_ALUA_EMULATED) {
582 tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port);
583 if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) {
584 printk(KERN_ERR "Unable to allocate t10_alua_tg_pt"
588 spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
589 __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem,
590 T10_ALUA(su_dev)->default_tg_pt_gp);
591 spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock);
592 printk(KERN_INFO "%s/%s: Adding to default ALUA Target Port"
593 " Group: alua/default_tg_pt_gp\n",
594 TRANSPORT(dev)->name, TPG_TFO(tpg)->get_fabric_name());
597 dev->dev_port_count++;
598 port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFER */
602 * Called with struct se_device->se_port_lock spinlock held.
604 static void core_release_port(struct se_device *dev, struct se_port *port)
605 __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock)
608 * Wait for any port reference for PR ALL_TG_PT=1 operation
609 * to complete in __core_scsi3_alloc_registration()
611 spin_unlock(&dev->se_port_lock);
612 if (atomic_read(&port->sep_tg_pt_ref_cnt))
614 spin_lock(&dev->se_port_lock);
616 core_alua_free_tg_pt_gp_mem(port);
618 list_del(&port->sep_list);
619 dev->dev_port_count--;
626 struct se_device *dev,
627 struct se_portal_group *tpg,
630 struct se_port *port;
632 port = core_alloc_port(dev);
636 lun->lun_se_dev = dev;
639 atomic_inc(&dev->dev_export_obj.obj_access_count);
640 core_export_port(dev, tpg, port, lun);
644 void core_dev_unexport(
645 struct se_device *dev,
646 struct se_portal_group *tpg,
649 struct se_port *port = lun->lun_sep;
651 spin_lock(&lun->lun_sep_lock);
652 if (lun->lun_se_dev == NULL) {
653 spin_unlock(&lun->lun_sep_lock);
656 spin_unlock(&lun->lun_sep_lock);
658 spin_lock(&dev->se_port_lock);
659 atomic_dec(&dev->dev_export_obj.obj_access_count);
660 core_release_port(dev, port);
661 spin_unlock(&dev->se_port_lock);
664 lun->lun_se_dev = NULL;
667 int transport_core_report_lun_response(struct se_cmd *se_cmd)
669 struct se_dev_entry *deve;
670 struct se_lun *se_lun;
671 struct se_session *se_sess = SE_SESS(se_cmd);
672 struct se_task *se_task;
673 unsigned char *buf = (unsigned char *)T_TASK(se_cmd)->t_task_buf;
674 u32 cdb_offset = 0, lun_count = 0, offset = 8, i;
676 list_for_each_entry(se_task, &T_TASK(se_cmd)->t_task_list, t_list)
680 printk(KERN_ERR "Unable to locate struct se_task for struct se_cmd\n");
681 return PYX_TRANSPORT_LU_COMM_FAILURE;
685 * If no struct se_session pointer is present, this struct se_cmd is
686 * coming via a target_core_mod PASSTHROUGH op, and not through
687 * a $FABRIC_MOD. In that case, report LUN=0 only.
690 int_to_scsilun(0, (struct scsi_lun *)&buf[offset]);
695 spin_lock_irq(&SE_NODE_ACL(se_sess)->device_list_lock);
696 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
697 deve = &SE_NODE_ACL(se_sess)->device_list[i];
698 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
700 se_lun = deve->se_lun;
702 * We determine the correct LUN LIST LENGTH even once we
703 * have reached the initial allocation length.
707 if ((cdb_offset + 8) >= se_cmd->data_length)
710 int_to_scsilun(deve->mapped_lun, (struct scsi_lun *)&buf[offset]);
714 spin_unlock_irq(&SE_NODE_ACL(se_sess)->device_list_lock);
717 * See SPC3 r07, page 159.
721 buf[0] = ((lun_count >> 24) & 0xff);
722 buf[1] = ((lun_count >> 16) & 0xff);
723 buf[2] = ((lun_count >> 8) & 0xff);
724 buf[3] = (lun_count & 0xff);
726 return PYX_TRANSPORT_SENT_TO_TRANSPORT;
729 /* se_release_device_for_hba():
733 void se_release_device_for_hba(struct se_device *dev)
735 struct se_hba *hba = dev->se_hba;
737 if ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) ||
738 (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) ||
739 (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN) ||
740 (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_ACTIVATED) ||
741 (dev->dev_status & TRANSPORT_DEVICE_OFFLINE_DEACTIVATED))
745 kthread_stop(dev->process_thread);
746 if (dev->transport->free_device)
747 dev->transport->free_device(dev->dev_ptr);
750 spin_lock(&hba->device_lock);
751 list_del(&dev->dev_list);
753 spin_unlock(&hba->device_lock);
755 core_scsi3_free_all_registrations(dev);
756 se_release_vpd_for_dev(dev);
758 kfree(dev->dev_status_queue_obj);
759 kfree(dev->dev_queue_obj);
765 void se_release_vpd_for_dev(struct se_device *dev)
767 struct t10_vpd *vpd, *vpd_tmp;
769 spin_lock(&DEV_T10_WWN(dev)->t10_vpd_lock);
770 list_for_each_entry_safe(vpd, vpd_tmp,
771 &DEV_T10_WWN(dev)->t10_vpd_list, vpd_list) {
772 list_del(&vpd->vpd_list);
775 spin_unlock(&DEV_T10_WWN(dev)->t10_vpd_lock);
780 /* se_free_virtual_device():
782 * Used for IBLOCK, RAMDISK, and FILEIO Transport Drivers.
784 int se_free_virtual_device(struct se_device *dev, struct se_hba *hba)
786 if (!list_empty(&dev->dev_sep_list))
789 core_alua_free_lu_gp_mem(dev);
790 se_release_device_for_hba(dev);
795 static void se_dev_start(struct se_device *dev)
797 struct se_hba *hba = dev->se_hba;
799 spin_lock(&hba->device_lock);
800 atomic_inc(&dev->dev_obj.obj_access_count);
801 if (atomic_read(&dev->dev_obj.obj_access_count) == 1) {
802 if (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED) {
803 dev->dev_status &= ~TRANSPORT_DEVICE_DEACTIVATED;
804 dev->dev_status |= TRANSPORT_DEVICE_ACTIVATED;
805 } else if (dev->dev_status &
806 TRANSPORT_DEVICE_OFFLINE_DEACTIVATED) {
808 ~TRANSPORT_DEVICE_OFFLINE_DEACTIVATED;
809 dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_ACTIVATED;
812 spin_unlock(&hba->device_lock);
815 static void se_dev_stop(struct se_device *dev)
817 struct se_hba *hba = dev->se_hba;
819 spin_lock(&hba->device_lock);
820 atomic_dec(&dev->dev_obj.obj_access_count);
821 if (atomic_read(&dev->dev_obj.obj_access_count) == 0) {
822 if (dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) {
823 dev->dev_status &= ~TRANSPORT_DEVICE_ACTIVATED;
824 dev->dev_status |= TRANSPORT_DEVICE_DEACTIVATED;
825 } else if (dev->dev_status &
826 TRANSPORT_DEVICE_OFFLINE_ACTIVATED) {
827 dev->dev_status &= ~TRANSPORT_DEVICE_OFFLINE_ACTIVATED;
828 dev->dev_status |= TRANSPORT_DEVICE_OFFLINE_DEACTIVATED;
831 spin_unlock(&hba->device_lock);
834 int se_dev_check_online(struct se_device *dev)
838 spin_lock_irq(&dev->dev_status_lock);
839 ret = ((dev->dev_status & TRANSPORT_DEVICE_ACTIVATED) ||
840 (dev->dev_status & TRANSPORT_DEVICE_DEACTIVATED)) ? 0 : 1;
841 spin_unlock_irq(&dev->dev_status_lock);
846 int se_dev_check_shutdown(struct se_device *dev)
850 spin_lock_irq(&dev->dev_status_lock);
851 ret = (dev->dev_status & TRANSPORT_DEVICE_SHUTDOWN);
852 spin_unlock_irq(&dev->dev_status_lock);
857 void se_dev_set_default_attribs(
858 struct se_device *dev,
859 struct se_dev_limits *dev_limits)
861 struct queue_limits *limits = &dev_limits->limits;
863 DEV_ATTRIB(dev)->emulate_dpo = DA_EMULATE_DPO;
864 DEV_ATTRIB(dev)->emulate_fua_write = DA_EMULATE_FUA_WRITE;
865 DEV_ATTRIB(dev)->emulate_fua_read = DA_EMULATE_FUA_READ;
866 DEV_ATTRIB(dev)->emulate_write_cache = DA_EMULATE_WRITE_CACHE;
867 DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl = DA_EMULATE_UA_INTLLCK_CTRL;
868 DEV_ATTRIB(dev)->emulate_tas = DA_EMULATE_TAS;
869 DEV_ATTRIB(dev)->emulate_tpu = DA_EMULATE_TPU;
870 DEV_ATTRIB(dev)->emulate_tpws = DA_EMULATE_TPWS;
871 DEV_ATTRIB(dev)->emulate_reservations = DA_EMULATE_RESERVATIONS;
872 DEV_ATTRIB(dev)->emulate_alua = DA_EMULATE_ALUA;
873 DEV_ATTRIB(dev)->enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
875 * The TPU=1 and TPWS=1 settings will be set in TCM/IBLOCK
876 * iblock_create_virtdevice() from struct queue_limits values
877 * if blk_queue_discard()==1
879 DEV_ATTRIB(dev)->max_unmap_lba_count = DA_MAX_UNMAP_LBA_COUNT;
880 DEV_ATTRIB(dev)->max_unmap_block_desc_count =
881 DA_MAX_UNMAP_BLOCK_DESC_COUNT;
882 DEV_ATTRIB(dev)->unmap_granularity = DA_UNMAP_GRANULARITY_DEFAULT;
883 DEV_ATTRIB(dev)->unmap_granularity_alignment =
884 DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT;
886 * block_size is based on subsystem plugin dependent requirements.
888 DEV_ATTRIB(dev)->hw_block_size = limits->logical_block_size;
889 DEV_ATTRIB(dev)->block_size = limits->logical_block_size;
891 * max_sectors is based on subsystem plugin dependent requirements.
893 DEV_ATTRIB(dev)->hw_max_sectors = limits->max_hw_sectors;
894 DEV_ATTRIB(dev)->max_sectors = limits->max_sectors;
896 * Set optimal_sectors from max_sectors, which can be lowered via
899 DEV_ATTRIB(dev)->optimal_sectors = limits->max_sectors;
901 * queue_depth is based on subsystem plugin dependent requirements.
903 DEV_ATTRIB(dev)->hw_queue_depth = dev_limits->hw_queue_depth;
904 DEV_ATTRIB(dev)->queue_depth = dev_limits->queue_depth;
907 int se_dev_set_task_timeout(struct se_device *dev, u32 task_timeout)
909 if (task_timeout > DA_TASK_TIMEOUT_MAX) {
910 printk(KERN_ERR "dev[%p]: Passed task_timeout: %u larger then"
911 " DA_TASK_TIMEOUT_MAX\n", dev, task_timeout);
914 DEV_ATTRIB(dev)->task_timeout = task_timeout;
915 printk(KERN_INFO "dev[%p]: Set SE Device task_timeout: %u\n",
922 int se_dev_set_max_unmap_lba_count(
923 struct se_device *dev,
924 u32 max_unmap_lba_count)
926 DEV_ATTRIB(dev)->max_unmap_lba_count = max_unmap_lba_count;
927 printk(KERN_INFO "dev[%p]: Set max_unmap_lba_count: %u\n",
928 dev, DEV_ATTRIB(dev)->max_unmap_lba_count);
932 int se_dev_set_max_unmap_block_desc_count(
933 struct se_device *dev,
934 u32 max_unmap_block_desc_count)
936 DEV_ATTRIB(dev)->max_unmap_block_desc_count = max_unmap_block_desc_count;
937 printk(KERN_INFO "dev[%p]: Set max_unmap_block_desc_count: %u\n",
938 dev, DEV_ATTRIB(dev)->max_unmap_block_desc_count);
942 int se_dev_set_unmap_granularity(
943 struct se_device *dev,
944 u32 unmap_granularity)
946 DEV_ATTRIB(dev)->unmap_granularity = unmap_granularity;
947 printk(KERN_INFO "dev[%p]: Set unmap_granularity: %u\n",
948 dev, DEV_ATTRIB(dev)->unmap_granularity);
952 int se_dev_set_unmap_granularity_alignment(
953 struct se_device *dev,
954 u32 unmap_granularity_alignment)
956 DEV_ATTRIB(dev)->unmap_granularity_alignment = unmap_granularity_alignment;
957 printk(KERN_INFO "dev[%p]: Set unmap_granularity_alignment: %u\n",
958 dev, DEV_ATTRIB(dev)->unmap_granularity_alignment);
962 int se_dev_set_emulate_dpo(struct se_device *dev, int flag)
964 if ((flag != 0) && (flag != 1)) {
965 printk(KERN_ERR "Illegal value %d\n", flag);
968 if (TRANSPORT(dev)->dpo_emulated == NULL) {
969 printk(KERN_ERR "TRANSPORT(dev)->dpo_emulated is NULL\n");
972 if (TRANSPORT(dev)->dpo_emulated(dev) == 0) {
973 printk(KERN_ERR "TRANSPORT(dev)->dpo_emulated not supported\n");
976 DEV_ATTRIB(dev)->emulate_dpo = flag;
977 printk(KERN_INFO "dev[%p]: SE Device Page Out (DPO) Emulation"
978 " bit: %d\n", dev, DEV_ATTRIB(dev)->emulate_dpo);
982 int se_dev_set_emulate_fua_write(struct se_device *dev, int flag)
984 if ((flag != 0) && (flag != 1)) {
985 printk(KERN_ERR "Illegal value %d\n", flag);
988 if (TRANSPORT(dev)->fua_write_emulated == NULL) {
989 printk(KERN_ERR "TRANSPORT(dev)->fua_write_emulated is NULL\n");
992 if (TRANSPORT(dev)->fua_write_emulated(dev) == 0) {
993 printk(KERN_ERR "TRANSPORT(dev)->fua_write_emulated not supported\n");
996 DEV_ATTRIB(dev)->emulate_fua_write = flag;
997 printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access WRITEs: %d\n",
998 dev, DEV_ATTRIB(dev)->emulate_fua_write);
1002 int se_dev_set_emulate_fua_read(struct se_device *dev, int flag)
1004 if ((flag != 0) && (flag != 1)) {
1005 printk(KERN_ERR "Illegal value %d\n", flag);
1008 if (TRANSPORT(dev)->fua_read_emulated == NULL) {
1009 printk(KERN_ERR "TRANSPORT(dev)->fua_read_emulated is NULL\n");
1012 if (TRANSPORT(dev)->fua_read_emulated(dev) == 0) {
1013 printk(KERN_ERR "TRANSPORT(dev)->fua_read_emulated not supported\n");
1016 DEV_ATTRIB(dev)->emulate_fua_read = flag;
1017 printk(KERN_INFO "dev[%p]: SE Device Forced Unit Access READs: %d\n",
1018 dev, DEV_ATTRIB(dev)->emulate_fua_read);
1022 int se_dev_set_emulate_write_cache(struct se_device *dev, int flag)
1024 if ((flag != 0) && (flag != 1)) {
1025 printk(KERN_ERR "Illegal value %d\n", flag);
1028 if (TRANSPORT(dev)->write_cache_emulated == NULL) {
1029 printk(KERN_ERR "TRANSPORT(dev)->write_cache_emulated is NULL\n");
1032 if (TRANSPORT(dev)->write_cache_emulated(dev) == 0) {
1033 printk(KERN_ERR "TRANSPORT(dev)->write_cache_emulated not supported\n");
1036 DEV_ATTRIB(dev)->emulate_write_cache = flag;
1037 printk(KERN_INFO "dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
1038 dev, DEV_ATTRIB(dev)->emulate_write_cache);
1042 int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *dev, int flag)
1044 if ((flag != 0) && (flag != 1) && (flag != 2)) {
1045 printk(KERN_ERR "Illegal value %d\n", flag);
1049 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1050 printk(KERN_ERR "dev[%p]: Unable to change SE Device"
1051 " UA_INTRLCK_CTRL while dev_export_obj: %d count"
1053 atomic_read(&dev->dev_export_obj.obj_access_count));
1056 DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl = flag;
1057 printk(KERN_INFO "dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
1058 dev, DEV_ATTRIB(dev)->emulate_ua_intlck_ctrl);
1063 int se_dev_set_emulate_tas(struct se_device *dev, int flag)
1065 if ((flag != 0) && (flag != 1)) {
1066 printk(KERN_ERR "Illegal value %d\n", flag);
1070 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1071 printk(KERN_ERR "dev[%p]: Unable to change SE Device TAS while"
1072 " dev_export_obj: %d count exists\n", dev,
1073 atomic_read(&dev->dev_export_obj.obj_access_count));
1076 DEV_ATTRIB(dev)->emulate_tas = flag;
1077 printk(KERN_INFO "dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
1078 dev, (DEV_ATTRIB(dev)->emulate_tas) ? "Enabled" : "Disabled");
1083 int se_dev_set_emulate_tpu(struct se_device *dev, int flag)
1085 if ((flag != 0) && (flag != 1)) {
1086 printk(KERN_ERR "Illegal value %d\n", flag);
1090 * We expect this value to be non-zero when generic Block Layer
1091 * Discard supported is detected iblock_create_virtdevice().
1093 if (!(DEV_ATTRIB(dev)->max_unmap_block_desc_count)) {
1094 printk(KERN_ERR "Generic Block Discard not supported\n");
1098 DEV_ATTRIB(dev)->emulate_tpu = flag;
1099 printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
1104 int se_dev_set_emulate_tpws(struct se_device *dev, int flag)
1106 if ((flag != 0) && (flag != 1)) {
1107 printk(KERN_ERR "Illegal value %d\n", flag);
1111 * We expect this value to be non-zero when generic Block Layer
1112 * Discard supported is detected iblock_create_virtdevice().
1114 if (!(DEV_ATTRIB(dev)->max_unmap_block_desc_count)) {
1115 printk(KERN_ERR "Generic Block Discard not supported\n");
1119 DEV_ATTRIB(dev)->emulate_tpws = flag;
1120 printk(KERN_INFO "dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
1125 int se_dev_set_enforce_pr_isids(struct se_device *dev, int flag)
1127 if ((flag != 0) && (flag != 1)) {
1128 printk(KERN_ERR "Illegal value %d\n", flag);
1131 DEV_ATTRIB(dev)->enforce_pr_isids = flag;
1132 printk(KERN_INFO "dev[%p]: SE Device enforce_pr_isids bit: %s\n", dev,
1133 (DEV_ATTRIB(dev)->enforce_pr_isids) ? "Enabled" : "Disabled");
1138 * Note, this can only be called on unexported SE Device Object.
1140 int se_dev_set_queue_depth(struct se_device *dev, u32 queue_depth)
1142 u32 orig_queue_depth = dev->queue_depth;
1144 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1145 printk(KERN_ERR "dev[%p]: Unable to change SE Device TCQ while"
1146 " dev_export_obj: %d count exists\n", dev,
1147 atomic_read(&dev->dev_export_obj.obj_access_count));
1150 if (!(queue_depth)) {
1151 printk(KERN_ERR "dev[%p]: Illegal ZERO value for queue"
1156 if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1157 if (queue_depth > DEV_ATTRIB(dev)->hw_queue_depth) {
1158 printk(KERN_ERR "dev[%p]: Passed queue_depth: %u"
1159 " exceeds TCM/SE_Device TCQ: %u\n",
1161 DEV_ATTRIB(dev)->hw_queue_depth);
1165 if (queue_depth > DEV_ATTRIB(dev)->queue_depth) {
1166 if (queue_depth > DEV_ATTRIB(dev)->hw_queue_depth) {
1167 printk(KERN_ERR "dev[%p]: Passed queue_depth:"
1168 " %u exceeds TCM/SE_Device MAX"
1169 " TCQ: %u\n", dev, queue_depth,
1170 DEV_ATTRIB(dev)->hw_queue_depth);
1176 DEV_ATTRIB(dev)->queue_depth = dev->queue_depth = queue_depth;
1177 if (queue_depth > orig_queue_depth)
1178 atomic_add(queue_depth - orig_queue_depth, &dev->depth_left);
1179 else if (queue_depth < orig_queue_depth)
1180 atomic_sub(orig_queue_depth - queue_depth, &dev->depth_left);
1182 printk(KERN_INFO "dev[%p]: SE Device TCQ Depth changed to: %u\n",
1187 int se_dev_set_max_sectors(struct se_device *dev, u32 max_sectors)
1189 int force = 0; /* Force setting for VDEVS */
1191 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1192 printk(KERN_ERR "dev[%p]: Unable to change SE Device"
1193 " max_sectors while dev_export_obj: %d count exists\n",
1194 dev, atomic_read(&dev->dev_export_obj.obj_access_count));
1197 if (!(max_sectors)) {
1198 printk(KERN_ERR "dev[%p]: Illegal ZERO value for"
1199 " max_sectors\n", dev);
1202 if (max_sectors < DA_STATUS_MAX_SECTORS_MIN) {
1203 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u less than"
1204 " DA_STATUS_MAX_SECTORS_MIN: %u\n", dev, max_sectors,
1205 DA_STATUS_MAX_SECTORS_MIN);
1208 if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1209 if (max_sectors > DEV_ATTRIB(dev)->hw_max_sectors) {
1210 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u"
1211 " greater than TCM/SE_Device max_sectors:"
1212 " %u\n", dev, max_sectors,
1213 DEV_ATTRIB(dev)->hw_max_sectors);
1217 if (!(force) && (max_sectors >
1218 DEV_ATTRIB(dev)->hw_max_sectors)) {
1219 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u"
1220 " greater than TCM/SE_Device max_sectors"
1221 ": %u, use force=1 to override.\n", dev,
1222 max_sectors, DEV_ATTRIB(dev)->hw_max_sectors);
1225 if (max_sectors > DA_STATUS_MAX_SECTORS_MAX) {
1226 printk(KERN_ERR "dev[%p]: Passed max_sectors: %u"
1227 " greater than DA_STATUS_MAX_SECTORS_MAX:"
1228 " %u\n", dev, max_sectors,
1229 DA_STATUS_MAX_SECTORS_MAX);
1234 DEV_ATTRIB(dev)->max_sectors = max_sectors;
1235 printk("dev[%p]: SE Device max_sectors changed to %u\n",
1240 int se_dev_set_optimal_sectors(struct se_device *dev, u32 optimal_sectors)
1242 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1243 printk(KERN_ERR "dev[%p]: Unable to change SE Device"
1244 " optimal_sectors while dev_export_obj: %d count exists\n",
1245 dev, atomic_read(&dev->dev_export_obj.obj_access_count));
1248 if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1249 printk(KERN_ERR "dev[%p]: Passed optimal_sectors cannot be"
1250 " changed for TCM/pSCSI\n", dev);
1253 if (optimal_sectors > DEV_ATTRIB(dev)->max_sectors) {
1254 printk(KERN_ERR "dev[%p]: Passed optimal_sectors %u cannot be"
1255 " greater than max_sectors: %u\n", dev,
1256 optimal_sectors, DEV_ATTRIB(dev)->max_sectors);
1260 DEV_ATTRIB(dev)->optimal_sectors = optimal_sectors;
1261 printk(KERN_INFO "dev[%p]: SE Device optimal_sectors changed to %u\n",
1262 dev, optimal_sectors);
1266 int se_dev_set_block_size(struct se_device *dev, u32 block_size)
1268 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1269 printk(KERN_ERR "dev[%p]: Unable to change SE Device block_size"
1270 " while dev_export_obj: %d count exists\n", dev,
1271 atomic_read(&dev->dev_export_obj.obj_access_count));
1275 if ((block_size != 512) &&
1276 (block_size != 1024) &&
1277 (block_size != 2048) &&
1278 (block_size != 4096)) {
1279 printk(KERN_ERR "dev[%p]: Illegal value for block_device: %u"
1280 " for SE device, must be 512, 1024, 2048 or 4096\n",
1285 if (TRANSPORT(dev)->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) {
1286 printk(KERN_ERR "dev[%p]: Not allowed to change block_size for"
1287 " Physical Device, use for Linux/SCSI to change"
1288 " block_size for underlying hardware\n", dev);
1292 DEV_ATTRIB(dev)->block_size = block_size;
1293 printk(KERN_INFO "dev[%p]: SE Device block_size changed to %u\n",
1298 struct se_lun *core_dev_add_lun(
1299 struct se_portal_group *tpg,
1301 struct se_device *dev,
1304 struct se_lun *lun_p;
1307 if (atomic_read(&dev->dev_access_obj.obj_access_count) != 0) {
1308 printk(KERN_ERR "Unable to export struct se_device while dev_access_obj: %d\n",
1309 atomic_read(&dev->dev_access_obj.obj_access_count));
1313 lun_p = core_tpg_pre_addlun(tpg, lun);
1314 if ((IS_ERR(lun_p)) || !(lun_p))
1317 if (dev->dev_flags & DF_READ_ONLY)
1318 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
1320 lun_access = TRANSPORT_LUNFLAGS_READ_WRITE;
1322 if (core_tpg_post_addlun(tpg, lun_p, lun_access, dev) < 0)
1325 printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from"
1326 " CORE HBA: %u\n", TPG_TFO(tpg)->get_fabric_name(),
1327 TPG_TFO(tpg)->tpg_get_tag(tpg), lun_p->unpacked_lun,
1328 TPG_TFO(tpg)->get_fabric_name(), hba->hba_id);
1330 * Update LUN maps for dynamically added initiators when
1331 * generate_node_acl is enabled.
1333 if (TPG_TFO(tpg)->tpg_check_demo_mode(tpg)) {
1334 struct se_node_acl *acl;
1335 spin_lock_bh(&tpg->acl_node_lock);
1336 list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
1337 if (acl->dynamic_node_acl) {
1338 spin_unlock_bh(&tpg->acl_node_lock);
1339 core_tpg_add_node_to_devs(acl, tpg);
1340 spin_lock_bh(&tpg->acl_node_lock);
1343 spin_unlock_bh(&tpg->acl_node_lock);
1349 /* core_dev_del_lun():
1353 int core_dev_del_lun(
1354 struct se_portal_group *tpg,
1360 lun = core_tpg_pre_dellun(tpg, unpacked_lun, &ret);
1364 core_tpg_post_dellun(tpg, lun);
1366 printk(KERN_INFO "%s_TPG[%u]_LUN[%u] - Deactivated %s Logical Unit from"
1367 " device object\n", TPG_TFO(tpg)->get_fabric_name(),
1368 TPG_TFO(tpg)->tpg_get_tag(tpg), unpacked_lun,
1369 TPG_TFO(tpg)->get_fabric_name());
1374 struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun)
1378 spin_lock(&tpg->tpg_lun_lock);
1379 if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
1380 printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS"
1381 "_PER_TPG-1: %u for Target Portal Group: %hu\n",
1382 TPG_TFO(tpg)->get_fabric_name(), unpacked_lun,
1383 TRANSPORT_MAX_LUNS_PER_TPG-1,
1384 TPG_TFO(tpg)->tpg_get_tag(tpg));
1385 spin_unlock(&tpg->tpg_lun_lock);
1388 lun = &tpg->tpg_lun_list[unpacked_lun];
1390 if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) {
1391 printk(KERN_ERR "%s Logical Unit Number: %u is not free on"
1392 " Target Portal Group: %hu, ignoring request.\n",
1393 TPG_TFO(tpg)->get_fabric_name(), unpacked_lun,
1394 TPG_TFO(tpg)->tpg_get_tag(tpg));
1395 spin_unlock(&tpg->tpg_lun_lock);
1398 spin_unlock(&tpg->tpg_lun_lock);
1403 /* core_dev_get_lun():
1407 static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun)
1411 spin_lock(&tpg->tpg_lun_lock);
1412 if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
1413 printk(KERN_ERR "%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER"
1414 "_TPG-1: %u for Target Portal Group: %hu\n",
1415 TPG_TFO(tpg)->get_fabric_name(), unpacked_lun,
1416 TRANSPORT_MAX_LUNS_PER_TPG-1,
1417 TPG_TFO(tpg)->tpg_get_tag(tpg));
1418 spin_unlock(&tpg->tpg_lun_lock);
1421 lun = &tpg->tpg_lun_list[unpacked_lun];
1423 if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) {
1424 printk(KERN_ERR "%s Logical Unit Number: %u is not active on"
1425 " Target Portal Group: %hu, ignoring request.\n",
1426 TPG_TFO(tpg)->get_fabric_name(), unpacked_lun,
1427 TPG_TFO(tpg)->tpg_get_tag(tpg));
1428 spin_unlock(&tpg->tpg_lun_lock);
1431 spin_unlock(&tpg->tpg_lun_lock);
1436 struct se_lun_acl *core_dev_init_initiator_node_lun_acl(
1437 struct se_portal_group *tpg,
1439 char *initiatorname,
1442 struct se_lun_acl *lacl;
1443 struct se_node_acl *nacl;
1445 if (strlen(initiatorname) >= TRANSPORT_IQN_LEN) {
1446 printk(KERN_ERR "%s InitiatorName exceeds maximum size.\n",
1447 TPG_TFO(tpg)->get_fabric_name());
1451 nacl = core_tpg_get_initiator_node_acl(tpg, initiatorname);
1456 lacl = kzalloc(sizeof(struct se_lun_acl), GFP_KERNEL);
1458 printk(KERN_ERR "Unable to allocate memory for struct se_lun_acl.\n");
1463 INIT_LIST_HEAD(&lacl->lacl_list);
1464 lacl->mapped_lun = mapped_lun;
1465 lacl->se_lun_nacl = nacl;
1466 snprintf(lacl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname);
1471 int core_dev_add_initiator_node_lun_acl(
1472 struct se_portal_group *tpg,
1473 struct se_lun_acl *lacl,
1478 struct se_node_acl *nacl;
1480 lun = core_dev_get_lun(tpg, unpacked_lun);
1482 printk(KERN_ERR "%s Logical Unit Number: %u is not active on"
1483 " Target Portal Group: %hu, ignoring request.\n",
1484 TPG_TFO(tpg)->get_fabric_name(), unpacked_lun,
1485 TPG_TFO(tpg)->tpg_get_tag(tpg));
1489 nacl = lacl->se_lun_nacl;
1493 if ((lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) &&
1494 (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE))
1495 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
1499 if (core_update_device_list_for_node(lun, lacl, lacl->mapped_lun,
1500 lun_access, nacl, tpg, 1) < 0)
1503 spin_lock(&lun->lun_acl_lock);
1504 list_add_tail(&lacl->lacl_list, &lun->lun_acl_list);
1505 atomic_inc(&lun->lun_acl_count);
1506 smp_mb__after_atomic_inc();
1507 spin_unlock(&lun->lun_acl_lock);
1509 printk(KERN_INFO "%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for "
1510 " InitiatorNode: %s\n", TPG_TFO(tpg)->get_fabric_name(),
1511 TPG_TFO(tpg)->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun,
1512 (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO",
1513 lacl->initiatorname);
1515 * Check to see if there are any existing persistent reservation APTPL
1516 * pre-registrations that need to be enabled for this LUN ACL..
1518 core_scsi3_check_aptpl_registration(lun->lun_se_dev, tpg, lun, lacl);
1522 /* core_dev_del_initiator_node_lun_acl():
1526 int core_dev_del_initiator_node_lun_acl(
1527 struct se_portal_group *tpg,
1529 struct se_lun_acl *lacl)
1531 struct se_node_acl *nacl;
1533 nacl = lacl->se_lun_nacl;
1537 spin_lock(&lun->lun_acl_lock);
1538 list_del(&lacl->lacl_list);
1539 atomic_dec(&lun->lun_acl_count);
1540 smp_mb__after_atomic_dec();
1541 spin_unlock(&lun->lun_acl_lock);
1543 core_update_device_list_for_node(lun, NULL, lacl->mapped_lun,
1544 TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0);
1546 lacl->se_lun = NULL;
1548 printk(KERN_INFO "%s_TPG[%hu]_LUN[%u] - Removed ACL for"
1549 " InitiatorNode: %s Mapped LUN: %u\n",
1550 TPG_TFO(tpg)->get_fabric_name(),
1551 TPG_TFO(tpg)->tpg_get_tag(tpg), lun->unpacked_lun,
1552 lacl->initiatorname, lacl->mapped_lun);
1557 void core_dev_free_initiator_node_lun_acl(
1558 struct se_portal_group *tpg,
1559 struct se_lun_acl *lacl)
1561 printk("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s"
1562 " Mapped LUN: %u\n", TPG_TFO(tpg)->get_fabric_name(),
1563 TPG_TFO(tpg)->tpg_get_tag(tpg),
1564 TPG_TFO(tpg)->get_fabric_name(),
1565 lacl->initiatorname, lacl->mapped_lun);
1570 int core_dev_setup_virtual_lun0(void)
1573 struct se_device *dev;
1574 struct se_subsystem_dev *se_dev = NULL;
1575 struct se_subsystem_api *t;
1579 hba = core_alloc_hba("rd_dr", 0, HBA_FLAGS_INTERNAL_USE);
1581 return PTR_ERR(hba);
1583 se_global->g_lun0_hba = hba;
1586 se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL);
1588 printk(KERN_ERR "Unable to allocate memory for"
1589 " struct se_subsystem_dev\n");
1593 INIT_LIST_HEAD(&se_dev->g_se_dev_list);
1594 INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list);
1595 spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock);
1596 INIT_LIST_HEAD(&se_dev->t10_reservation.registration_list);
1597 INIT_LIST_HEAD(&se_dev->t10_reservation.aptpl_reg_list);
1598 spin_lock_init(&se_dev->t10_reservation.registration_lock);
1599 spin_lock_init(&se_dev->t10_reservation.aptpl_reg_lock);
1600 INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list);
1601 spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock);
1602 spin_lock_init(&se_dev->se_dev_lock);
1603 se_dev->t10_reservation.pr_aptpl_buf_len = PR_APTPL_BUF_LEN;
1604 se_dev->t10_wwn.t10_sub_dev = se_dev;
1605 se_dev->t10_alua.t10_sub_dev = se_dev;
1606 se_dev->se_dev_attrib.da_sub_dev = se_dev;
1607 se_dev->se_dev_hba = hba;
1609 se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, "virt_lun0");
1610 if (!(se_dev->se_dev_su_ptr)) {
1611 printk(KERN_ERR "Unable to locate subsystem dependent pointer"
1612 " from allocate_virtdevice()\n");
1616 se_global->g_lun0_su_dev = se_dev;
1619 sprintf(buf, "rd_pages=8");
1620 t->set_configfs_dev_params(hba, se_dev, buf, sizeof(buf));
1622 dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr);
1623 if (!(dev) || IS_ERR(dev)) {
1627 se_dev->se_dev_ptr = dev;
1628 se_global->g_lun0_dev = dev;
1632 se_global->g_lun0_su_dev = NULL;
1634 if (se_global->g_lun0_hba) {
1635 core_delete_hba(se_global->g_lun0_hba);
1636 se_global->g_lun0_hba = NULL;
1642 void core_dev_release_virtual_lun0(void)
1644 struct se_hba *hba = se_global->g_lun0_hba;
1645 struct se_subsystem_dev *su_dev = se_global->g_lun0_su_dev;
1650 if (se_global->g_lun0_dev)
1651 se_free_virtual_device(se_global->g_lun0_dev, hba);
1654 core_delete_hba(hba);