1 /*******************************************************************************
2 * Filename: target_core_tpg.c
4 * This file contains generic Target Portal Group related functions.
6 * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc.
7 * Copyright (c) 2005, 2006, 2007 SBE, Inc.
8 * Copyright (c) 2007-2010 Rising Tide Systems
9 * Copyright (c) 2008-2010 Linux-iSCSI.org
11 * Nicholas A. Bellinger <nab@kernel.org>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 ******************************************************************************/
29 #include <linux/net.h>
30 #include <linux/string.h>
31 #include <linux/timer.h>
32 #include <linux/slab.h>
33 #include <linux/spinlock.h>
35 #include <linux/export.h>
38 #include <scsi/scsi.h>
39 #include <scsi/scsi_cmnd.h>
41 #include <target/target_core_base.h>
42 #include <target/target_core_backend.h>
43 #include <target/target_core_fabric.h>
45 #include "target_core_internal.h"
47 extern struct se_device *g_lun0_dev;
49 static DEFINE_SPINLOCK(tpg_lock);
50 static LIST_HEAD(tpg_list);
52 /* core_clear_initiator_node_from_tpg():
56 static void core_clear_initiator_node_from_tpg(
57 struct se_node_acl *nacl,
58 struct se_portal_group *tpg)
61 struct se_dev_entry *deve;
64 spin_lock_irq(&nacl->device_list_lock);
65 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
66 deve = nacl->device_list[i];
68 if (!(deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS))
72 pr_err("%s device entries device pointer is"
73 " NULL, but Initiator has access.\n",
74 tpg->se_tpg_tfo->get_fabric_name());
79 spin_unlock_irq(&nacl->device_list_lock);
80 core_update_device_list_for_node(lun, NULL, deve->mapped_lun,
81 TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0);
83 spin_lock_irq(&nacl->device_list_lock);
85 spin_unlock_irq(&nacl->device_list_lock);
88 /* __core_tpg_get_initiator_node_acl():
90 * spin_lock_bh(&tpg->acl_node_lock); must be held when calling
92 struct se_node_acl *__core_tpg_get_initiator_node_acl(
93 struct se_portal_group *tpg,
94 const char *initiatorname)
96 struct se_node_acl *acl;
98 list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
99 if (!strcmp(acl->initiatorname, initiatorname))
106 /* core_tpg_get_initiator_node_acl():
110 struct se_node_acl *core_tpg_get_initiator_node_acl(
111 struct se_portal_group *tpg,
112 unsigned char *initiatorname)
114 struct se_node_acl *acl;
116 spin_lock_irq(&tpg->acl_node_lock);
117 list_for_each_entry(acl, &tpg->acl_node_list, acl_list) {
118 if (!strcmp(acl->initiatorname, initiatorname) &&
119 !acl->dynamic_node_acl) {
120 spin_unlock_irq(&tpg->acl_node_lock);
124 spin_unlock_irq(&tpg->acl_node_lock);
129 /* core_tpg_add_node_to_devs():
133 void core_tpg_add_node_to_devs(
134 struct se_node_acl *acl,
135 struct se_portal_group *tpg)
140 struct se_device *dev;
142 spin_lock(&tpg->tpg_lun_lock);
143 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
144 lun = tpg->tpg_lun_list[i];
145 if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE)
148 spin_unlock(&tpg->tpg_lun_lock);
150 dev = lun->lun_se_dev;
152 * By default in LIO-Target $FABRIC_MOD,
153 * demo_mode_write_protect is ON, or READ_ONLY;
155 if (!tpg->se_tpg_tfo->tpg_check_demo_mode_write_protect(tpg)) {
156 if (dev->dev_flags & DF_READ_ONLY)
157 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
159 lun_access = TRANSPORT_LUNFLAGS_READ_WRITE;
162 * Allow only optical drives to issue R/W in default RO
165 if (dev->transport->get_device_type(dev) == TYPE_DISK)
166 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
168 lun_access = TRANSPORT_LUNFLAGS_READ_WRITE;
171 pr_debug("TARGET_CORE[%s]->TPG[%u]_LUN[%u] - Adding %s"
172 " access for LUN in Demo Mode\n",
173 tpg->se_tpg_tfo->get_fabric_name(),
174 tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun,
175 (lun_access == TRANSPORT_LUNFLAGS_READ_WRITE) ?
176 "READ-WRITE" : "READ-ONLY");
178 core_update_device_list_for_node(lun, NULL, lun->unpacked_lun,
179 lun_access, acl, tpg, 1);
180 spin_lock(&tpg->tpg_lun_lock);
182 spin_unlock(&tpg->tpg_lun_lock);
185 /* core_set_queue_depth_for_node():
189 static int core_set_queue_depth_for_node(
190 struct se_portal_group *tpg,
191 struct se_node_acl *acl)
193 if (!acl->queue_depth) {
194 pr_err("Queue depth for %s Initiator Node: %s is 0,"
195 "defaulting to 1.\n", tpg->se_tpg_tfo->get_fabric_name(),
197 acl->queue_depth = 1;
203 void array_free(void *array, int n)
208 for (i = 0; i < n; i++)
213 static void *array_zalloc(int n, size_t size, gfp_t flags)
218 a = kzalloc(n * sizeof(void*), flags);
221 for (i = 0; i < n; i++) {
222 a[i] = kzalloc(size, flags);
231 /* core_create_device_list_for_node():
235 static int core_create_device_list_for_node(struct se_node_acl *nacl)
237 struct se_dev_entry *deve;
240 nacl->device_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG,
241 sizeof(struct se_dev_entry), GFP_KERNEL);
242 if (!nacl->device_list) {
243 pr_err("Unable to allocate memory for"
244 " struct se_node_acl->device_list\n");
247 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
248 deve = nacl->device_list[i];
250 atomic_set(&deve->ua_count, 0);
251 atomic_set(&deve->pr_ref_count, 0);
252 spin_lock_init(&deve->ua_lock);
253 INIT_LIST_HEAD(&deve->alua_port_list);
254 INIT_LIST_HEAD(&deve->ua_list);
260 /* core_tpg_check_initiator_node_acl()
264 struct se_node_acl *core_tpg_check_initiator_node_acl(
265 struct se_portal_group *tpg,
266 unsigned char *initiatorname)
268 struct se_node_acl *acl;
270 acl = core_tpg_get_initiator_node_acl(tpg, initiatorname);
274 if (!tpg->se_tpg_tfo->tpg_check_demo_mode(tpg))
277 acl = tpg->se_tpg_tfo->tpg_alloc_fabric_acl(tpg);
281 INIT_LIST_HEAD(&acl->acl_list);
282 INIT_LIST_HEAD(&acl->acl_sess_list);
283 kref_init(&acl->acl_kref);
284 init_completion(&acl->acl_free_comp);
285 spin_lock_init(&acl->device_list_lock);
286 spin_lock_init(&acl->nacl_sess_lock);
287 atomic_set(&acl->acl_pr_ref_count, 0);
288 acl->queue_depth = tpg->se_tpg_tfo->tpg_get_default_depth(tpg);
289 snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname);
291 acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX);
292 spin_lock_init(&acl->stats_lock);
293 acl->dynamic_node_acl = 1;
295 tpg->se_tpg_tfo->set_default_node_attributes(acl);
297 if (core_create_device_list_for_node(acl) < 0) {
298 tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl);
302 if (core_set_queue_depth_for_node(tpg, acl) < 0) {
303 core_free_device_list_for_node(acl, tpg);
304 tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl);
308 * Here we only create demo-mode MappedLUNs from the active
309 * TPG LUNs if the fabric is not explictly asking for
310 * tpg_check_demo_mode_login_only() == 1.
312 if ((tpg->se_tpg_tfo->tpg_check_demo_mode_login_only != NULL) &&
313 (tpg->se_tpg_tfo->tpg_check_demo_mode_login_only(tpg) == 1))
316 core_tpg_add_node_to_devs(acl, tpg);
318 spin_lock_irq(&tpg->acl_node_lock);
319 list_add_tail(&acl->acl_list, &tpg->acl_node_list);
320 tpg->num_node_acls++;
321 spin_unlock_irq(&tpg->acl_node_lock);
323 pr_debug("%s_TPG[%u] - Added DYNAMIC ACL with TCQ Depth: %d for %s"
324 " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(),
325 tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth,
326 tpg->se_tpg_tfo->get_fabric_name(), initiatorname);
330 EXPORT_SYMBOL(core_tpg_check_initiator_node_acl);
332 void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *nacl)
334 while (atomic_read(&nacl->acl_pr_ref_count) != 0)
338 void core_tpg_clear_object_luns(struct se_portal_group *tpg)
343 spin_lock(&tpg->tpg_lun_lock);
344 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
345 lun = tpg->tpg_lun_list[i];
347 if ((lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) ||
348 (lun->lun_se_dev == NULL))
351 spin_unlock(&tpg->tpg_lun_lock);
352 core_dev_del_lun(tpg, lun->unpacked_lun);
353 spin_lock(&tpg->tpg_lun_lock);
355 spin_unlock(&tpg->tpg_lun_lock);
357 EXPORT_SYMBOL(core_tpg_clear_object_luns);
359 /* core_tpg_add_initiator_node_acl():
363 struct se_node_acl *core_tpg_add_initiator_node_acl(
364 struct se_portal_group *tpg,
365 struct se_node_acl *se_nacl,
366 const char *initiatorname,
369 struct se_node_acl *acl = NULL;
371 spin_lock_irq(&tpg->acl_node_lock);
372 acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname);
374 if (acl->dynamic_node_acl) {
375 acl->dynamic_node_acl = 0;
376 pr_debug("%s_TPG[%u] - Replacing dynamic ACL"
377 " for %s\n", tpg->se_tpg_tfo->get_fabric_name(),
378 tpg->se_tpg_tfo->tpg_get_tag(tpg), initiatorname);
379 spin_unlock_irq(&tpg->acl_node_lock);
381 * Release the locally allocated struct se_node_acl
382 * because * core_tpg_add_initiator_node_acl() returned
383 * a pointer to an existing demo mode node ACL.
386 tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg,
391 pr_err("ACL entry for %s Initiator"
392 " Node %s already exists for TPG %u, ignoring"
393 " request.\n", tpg->se_tpg_tfo->get_fabric_name(),
394 initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg));
395 spin_unlock_irq(&tpg->acl_node_lock);
396 return ERR_PTR(-EEXIST);
398 spin_unlock_irq(&tpg->acl_node_lock);
401 pr_err("struct se_node_acl pointer is NULL\n");
402 return ERR_PTR(-EINVAL);
405 * For v4.x logic the se_node_acl_s is hanging off a fabric
406 * dependent structure allocated via
407 * struct target_core_fabric_ops->fabric_make_nodeacl()
411 INIT_LIST_HEAD(&acl->acl_list);
412 INIT_LIST_HEAD(&acl->acl_sess_list);
413 kref_init(&acl->acl_kref);
414 init_completion(&acl->acl_free_comp);
415 spin_lock_init(&acl->device_list_lock);
416 spin_lock_init(&acl->nacl_sess_lock);
417 atomic_set(&acl->acl_pr_ref_count, 0);
418 acl->queue_depth = queue_depth;
419 snprintf(acl->initiatorname, TRANSPORT_IQN_LEN, "%s", initiatorname);
421 acl->acl_index = scsi_get_new_index(SCSI_AUTH_INTR_INDEX);
422 spin_lock_init(&acl->stats_lock);
424 tpg->se_tpg_tfo->set_default_node_attributes(acl);
426 if (core_create_device_list_for_node(acl) < 0) {
427 tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl);
428 return ERR_PTR(-ENOMEM);
431 if (core_set_queue_depth_for_node(tpg, acl) < 0) {
432 core_free_device_list_for_node(acl, tpg);
433 tpg->se_tpg_tfo->tpg_release_fabric_acl(tpg, acl);
434 return ERR_PTR(-EINVAL);
437 spin_lock_irq(&tpg->acl_node_lock);
438 list_add_tail(&acl->acl_list, &tpg->acl_node_list);
439 tpg->num_node_acls++;
440 spin_unlock_irq(&tpg->acl_node_lock);
443 pr_debug("%s_TPG[%hu] - Added ACL with TCQ Depth: %d for %s"
444 " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(),
445 tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth,
446 tpg->se_tpg_tfo->get_fabric_name(), initiatorname);
450 EXPORT_SYMBOL(core_tpg_add_initiator_node_acl);
452 /* core_tpg_del_initiator_node_acl():
456 int core_tpg_del_initiator_node_acl(
457 struct se_portal_group *tpg,
458 struct se_node_acl *acl,
461 LIST_HEAD(sess_list);
462 struct se_session *sess, *sess_tmp;
466 spin_lock_irq(&tpg->acl_node_lock);
467 if (acl->dynamic_node_acl) {
468 acl->dynamic_node_acl = 0;
470 list_del(&acl->acl_list);
471 tpg->num_node_acls--;
472 spin_unlock_irq(&tpg->acl_node_lock);
474 spin_lock_irqsave(&acl->nacl_sess_lock, flags);
477 list_for_each_entry_safe(sess, sess_tmp, &acl->acl_sess_list,
479 if (sess->sess_tearing_down != 0)
482 target_get_session(sess);
483 list_move(&sess->sess_acl_list, &sess_list);
485 spin_unlock_irqrestore(&acl->nacl_sess_lock, flags);
487 list_for_each_entry_safe(sess, sess_tmp, &sess_list, sess_acl_list) {
488 list_del(&sess->sess_acl_list);
490 rc = tpg->se_tpg_tfo->shutdown_session(sess);
491 target_put_session(sess);
494 target_put_session(sess);
496 target_put_nacl(acl);
498 * Wait for last target_put_nacl() to complete in target_complete_nacl()
499 * for active fabric session transport_deregister_session() callbacks.
501 wait_for_completion(&acl->acl_free_comp);
503 core_tpg_wait_for_nacl_pr_ref(acl);
504 core_clear_initiator_node_from_tpg(acl, tpg);
505 core_free_device_list_for_node(acl, tpg);
507 pr_debug("%s_TPG[%hu] - Deleted ACL with TCQ Depth: %d for %s"
508 " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(),
509 tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth,
510 tpg->se_tpg_tfo->get_fabric_name(), acl->initiatorname);
514 EXPORT_SYMBOL(core_tpg_del_initiator_node_acl);
516 /* core_tpg_set_initiator_node_queue_depth():
520 int core_tpg_set_initiator_node_queue_depth(
521 struct se_portal_group *tpg,
522 unsigned char *initiatorname,
526 struct se_session *sess, *init_sess = NULL;
527 struct se_node_acl *acl;
531 spin_lock_irq(&tpg->acl_node_lock);
532 acl = __core_tpg_get_initiator_node_acl(tpg, initiatorname);
534 pr_err("Access Control List entry for %s Initiator"
535 " Node %s does not exists for TPG %hu, ignoring"
536 " request.\n", tpg->se_tpg_tfo->get_fabric_name(),
537 initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg));
538 spin_unlock_irq(&tpg->acl_node_lock);
541 if (acl->dynamic_node_acl) {
542 acl->dynamic_node_acl = 0;
545 spin_unlock_irq(&tpg->acl_node_lock);
547 spin_lock_irqsave(&tpg->session_lock, flags);
548 list_for_each_entry(sess, &tpg->tpg_sess_list, sess_list) {
549 if (sess->se_node_acl != acl)
553 pr_err("Unable to change queue depth for %s"
554 " Initiator Node: %s while session is"
555 " operational. To forcefully change the queue"
556 " depth and force session reinstatement"
557 " use the \"force=1\" parameter.\n",
558 tpg->se_tpg_tfo->get_fabric_name(), initiatorname);
559 spin_unlock_irqrestore(&tpg->session_lock, flags);
561 spin_lock_irq(&tpg->acl_node_lock);
563 acl->dynamic_node_acl = 1;
564 spin_unlock_irq(&tpg->acl_node_lock);
568 * Determine if the session needs to be closed by our context.
570 if (!tpg->se_tpg_tfo->shutdown_session(sess))
578 * User has requested to change the queue depth for a Initiator Node.
579 * Change the value in the Node's struct se_node_acl, and call
580 * core_set_queue_depth_for_node() to add the requested queue depth.
582 * Finally call tpg->se_tpg_tfo->close_session() to force session
583 * reinstatement to occur if there is an active session for the
584 * $FABRIC_MOD Initiator Node in question.
586 acl->queue_depth = queue_depth;
588 if (core_set_queue_depth_for_node(tpg, acl) < 0) {
589 spin_unlock_irqrestore(&tpg->session_lock, flags);
591 * Force session reinstatement if
592 * core_set_queue_depth_for_node() failed, because we assume
593 * the $FABRIC_MOD has already the set session reinstatement
594 * bit from tpg->se_tpg_tfo->shutdown_session() called above.
597 tpg->se_tpg_tfo->close_session(init_sess);
599 spin_lock_irq(&tpg->acl_node_lock);
601 acl->dynamic_node_acl = 1;
602 spin_unlock_irq(&tpg->acl_node_lock);
605 spin_unlock_irqrestore(&tpg->session_lock, flags);
607 * If the $FABRIC_MOD session for the Initiator Node ACL exists,
608 * forcefully shutdown the $FABRIC_MOD session/nexus.
611 tpg->se_tpg_tfo->close_session(init_sess);
613 pr_debug("Successfully changed queue depth to: %d for Initiator"
614 " Node: %s on %s Target Portal Group: %u\n", queue_depth,
615 initiatorname, tpg->se_tpg_tfo->get_fabric_name(),
616 tpg->se_tpg_tfo->tpg_get_tag(tpg));
618 spin_lock_irq(&tpg->acl_node_lock);
620 acl->dynamic_node_acl = 1;
621 spin_unlock_irq(&tpg->acl_node_lock);
625 EXPORT_SYMBOL(core_tpg_set_initiator_node_queue_depth);
627 static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg)
629 /* Set in core_dev_setup_virtual_lun0() */
630 struct se_device *dev = g_lun0_dev;
631 struct se_lun *lun = &se_tpg->tpg_virt_lun0;
632 u32 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY;
635 lun->unpacked_lun = 0;
636 lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
637 atomic_set(&lun->lun_acl_count, 0);
638 init_completion(&lun->lun_shutdown_comp);
639 INIT_LIST_HEAD(&lun->lun_acl_list);
640 INIT_LIST_HEAD(&lun->lun_cmd_list);
641 spin_lock_init(&lun->lun_acl_lock);
642 spin_lock_init(&lun->lun_cmd_lock);
643 spin_lock_init(&lun->lun_sep_lock);
645 ret = core_tpg_post_addlun(se_tpg, lun, lun_access, dev);
652 static void core_tpg_release_virtual_lun0(struct se_portal_group *se_tpg)
654 struct se_lun *lun = &se_tpg->tpg_virt_lun0;
656 core_tpg_post_dellun(se_tpg, lun);
659 int core_tpg_register(
660 struct target_core_fabric_ops *tfo,
661 struct se_wwn *se_wwn,
662 struct se_portal_group *se_tpg,
663 void *tpg_fabric_ptr,
669 se_tpg->tpg_lun_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG,
670 sizeof(struct se_lun), GFP_KERNEL);
671 if (!se_tpg->tpg_lun_list) {
672 pr_err("Unable to allocate struct se_portal_group->"
677 for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) {
678 lun = se_tpg->tpg_lun_list[i];
679 lun->unpacked_lun = i;
680 lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
681 atomic_set(&lun->lun_acl_count, 0);
682 init_completion(&lun->lun_shutdown_comp);
683 INIT_LIST_HEAD(&lun->lun_acl_list);
684 INIT_LIST_HEAD(&lun->lun_cmd_list);
685 spin_lock_init(&lun->lun_acl_lock);
686 spin_lock_init(&lun->lun_cmd_lock);
687 spin_lock_init(&lun->lun_sep_lock);
690 se_tpg->se_tpg_type = se_tpg_type;
691 se_tpg->se_tpg_fabric_ptr = tpg_fabric_ptr;
692 se_tpg->se_tpg_tfo = tfo;
693 se_tpg->se_tpg_wwn = se_wwn;
694 atomic_set(&se_tpg->tpg_pr_ref_count, 0);
695 INIT_LIST_HEAD(&se_tpg->acl_node_list);
696 INIT_LIST_HEAD(&se_tpg->se_tpg_node);
697 INIT_LIST_HEAD(&se_tpg->tpg_sess_list);
698 spin_lock_init(&se_tpg->acl_node_lock);
699 spin_lock_init(&se_tpg->session_lock);
700 spin_lock_init(&se_tpg->tpg_lun_lock);
702 if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) {
703 if (core_tpg_setup_virtual_lun0(se_tpg) < 0) {
709 spin_lock_bh(&tpg_lock);
710 list_add_tail(&se_tpg->se_tpg_node, &tpg_list);
711 spin_unlock_bh(&tpg_lock);
713 pr_debug("TARGET_CORE[%s]: Allocated %s struct se_portal_group for"
714 " endpoint: %s, Portal Tag: %u\n", tfo->get_fabric_name(),
715 (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ?
716 "Normal" : "Discovery", (tfo->tpg_get_wwn(se_tpg) == NULL) ?
717 "None" : tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg));
721 EXPORT_SYMBOL(core_tpg_register);
723 int core_tpg_deregister(struct se_portal_group *se_tpg)
725 struct se_node_acl *nacl, *nacl_tmp;
727 pr_debug("TARGET_CORE[%s]: Deallocating %s struct se_portal_group"
728 " for endpoint: %s Portal Tag %u\n",
729 (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) ?
730 "Normal" : "Discovery", se_tpg->se_tpg_tfo->get_fabric_name(),
731 se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg),
732 se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
734 spin_lock_bh(&tpg_lock);
735 list_del(&se_tpg->se_tpg_node);
736 spin_unlock_bh(&tpg_lock);
738 while (atomic_read(&se_tpg->tpg_pr_ref_count) != 0)
741 * Release any remaining demo-mode generated se_node_acl that have
742 * not been released because of TFO->tpg_check_demo_mode_cache() == 1
743 * in transport_deregister_session().
745 spin_lock_irq(&se_tpg->acl_node_lock);
746 list_for_each_entry_safe(nacl, nacl_tmp, &se_tpg->acl_node_list,
748 list_del(&nacl->acl_list);
749 se_tpg->num_node_acls--;
750 spin_unlock_irq(&se_tpg->acl_node_lock);
752 core_tpg_wait_for_nacl_pr_ref(nacl);
753 core_free_device_list_for_node(nacl, se_tpg);
754 se_tpg->se_tpg_tfo->tpg_release_fabric_acl(se_tpg, nacl);
756 spin_lock_irq(&se_tpg->acl_node_lock);
758 spin_unlock_irq(&se_tpg->acl_node_lock);
760 if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL)
761 core_tpg_release_virtual_lun0(se_tpg);
763 se_tpg->se_tpg_fabric_ptr = NULL;
764 array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG);
767 EXPORT_SYMBOL(core_tpg_deregister);
769 struct se_lun *core_tpg_pre_addlun(
770 struct se_portal_group *tpg,
775 if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
776 pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG"
777 "-1: %u for Target Portal Group: %u\n",
778 tpg->se_tpg_tfo->get_fabric_name(),
779 unpacked_lun, TRANSPORT_MAX_LUNS_PER_TPG-1,
780 tpg->se_tpg_tfo->tpg_get_tag(tpg));
781 return ERR_PTR(-EOVERFLOW);
784 spin_lock(&tpg->tpg_lun_lock);
785 lun = tpg->tpg_lun_list[unpacked_lun];
786 if (lun->lun_status == TRANSPORT_LUN_STATUS_ACTIVE) {
787 pr_err("TPG Logical Unit Number: %u is already active"
788 " on %s Target Portal Group: %u, ignoring request.\n",
789 unpacked_lun, tpg->se_tpg_tfo->get_fabric_name(),
790 tpg->se_tpg_tfo->tpg_get_tag(tpg));
791 spin_unlock(&tpg->tpg_lun_lock);
792 return ERR_PTR(-EINVAL);
794 spin_unlock(&tpg->tpg_lun_lock);
799 int core_tpg_post_addlun(
800 struct se_portal_group *tpg,
807 ret = core_dev_export(lun_ptr, tpg, lun);
811 spin_lock(&tpg->tpg_lun_lock);
812 lun->lun_access = lun_access;
813 lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE;
814 spin_unlock(&tpg->tpg_lun_lock);
819 static void core_tpg_shutdown_lun(
820 struct se_portal_group *tpg,
823 core_clear_lun_from_tpg(lun, tpg);
824 transport_clear_lun_from_sessions(lun);
827 struct se_lun *core_tpg_pre_dellun(
828 struct se_portal_group *tpg,
833 if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
834 pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG"
835 "-1: %u for Target Portal Group: %u\n",
836 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
837 TRANSPORT_MAX_LUNS_PER_TPG-1,
838 tpg->se_tpg_tfo->tpg_get_tag(tpg));
839 return ERR_PTR(-EOVERFLOW);
842 spin_lock(&tpg->tpg_lun_lock);
843 lun = tpg->tpg_lun_list[unpacked_lun];
844 if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) {
845 pr_err("%s Logical Unit Number: %u is not active on"
846 " Target Portal Group: %u, ignoring request.\n",
847 tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun,
848 tpg->se_tpg_tfo->tpg_get_tag(tpg));
849 spin_unlock(&tpg->tpg_lun_lock);
850 return ERR_PTR(-ENODEV);
852 spin_unlock(&tpg->tpg_lun_lock);
857 int core_tpg_post_dellun(
858 struct se_portal_group *tpg,
861 core_tpg_shutdown_lun(tpg, lun);
863 core_dev_unexport(lun->lun_se_dev, tpg, lun);
865 spin_lock(&tpg->tpg_lun_lock);
866 lun->lun_status = TRANSPORT_LUN_STATUS_FREE;
867 spin_unlock(&tpg->tpg_lun_lock);