1 /*******************************************************************************
2 * Filename: target_core_fabric_configfs.c
4 * This file contains generic fabric module configfs infrastructure for
7 * (c) Copyright 2010-2013 Datera, Inc.
9 * Nicholas A. Bellinger <nab@linux-iscsi.org>
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.
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 ****************************************************************************/
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/utsname.h>
25 #include <linux/init.h>
27 #include <linux/namei.h>
28 #include <linux/slab.h>
29 #include <linux/types.h>
30 #include <linux/delay.h>
31 #include <linux/unistd.h>
32 #include <linux/string.h>
33 #include <linux/syscalls.h>
34 #include <linux/configfs.h>
36 #include <target/target_core_base.h>
37 #include <target/target_core_fabric.h>
39 #include "target_core_internal.h"
40 #include "target_core_alua.h"
41 #include "target_core_pr.h"
43 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
44 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
46 struct config_item_type *cit = &tf->tf_##_name##_cit; \
48 cit->ct_item_ops = _item_ops; \
49 cit->ct_group_ops = _group_ops; \
50 cit->ct_attrs = _attrs; \
51 cit->ct_owner = tf->tf_ops->module; \
52 pr_debug("Setup generic %s\n", __stringify(_name)); \
55 #define TF_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
56 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
58 struct config_item_type *cit = &tf->tf_##_name##_cit; \
59 struct configfs_attribute **attrs = tf->tf_ops->tfc_##_name##_attrs; \
61 cit->ct_item_ops = _item_ops; \
62 cit->ct_group_ops = _group_ops; \
63 cit->ct_attrs = attrs; \
64 cit->ct_owner = tf->tf_ops->module; \
65 pr_debug("Setup generic %s\n", __stringify(_name)); \
68 /* Start of tfc_tpg_mappedlun_cit */
70 static int target_fabric_mappedlun_link(
71 struct config_item *lun_acl_ci,
72 struct config_item *lun_ci)
74 struct se_dev_entry *deve;
75 struct se_lun *lun = container_of(to_config_group(lun_ci),
76 struct se_lun, lun_group);
77 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
78 struct se_lun_acl, se_lun_group);
79 struct se_portal_group *se_tpg;
80 struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
83 if (lun->lun_link_magic != SE_LUN_LINK_MAGIC) {
84 pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
85 " %p to struct lun: %p\n", lun_ci, lun);
89 * Ensure that the source port exists
91 if (!lun->lun_se_dev) {
92 pr_err("Source se_lun->lun_se_dev does not exist\n");
95 if (lun->lun_shutdown) {
96 pr_err("Unable to create mappedlun symlink because"
97 " lun->lun_shutdown=true\n");
100 se_tpg = lun->lun_tpg;
102 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
103 tpg_ci = &nacl_ci->ci_group->cg_item;
104 wwn_ci = &tpg_ci->ci_group->cg_item;
105 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
106 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
108 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
110 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
111 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
112 config_item_name(wwn_ci));
115 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
116 pr_err("Illegal Initiator ACL Symlink outside of %s"
117 " TPGT: %s\n", config_item_name(wwn_ci),
118 config_item_name(tpg_ci));
122 * If this struct se_node_acl was dynamically generated with
123 * tpg_1/attrib/generate_node_acls=1, use the existing
124 * deve->lun_access_ro value, which will be true when
125 * tpg_1/attrib/demo_mode_write_protect=1
128 deve = target_nacl_find_deve(lacl->se_lun_nacl, lacl->mapped_lun);
130 lun_access_ro = deve->lun_access_ro;
133 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
134 se_tpg)) ? true : false;
137 * Determine the actual mapped LUN value user wants..
139 * This value is what the SCSI Initiator actually sees the
140 * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
142 return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access_ro);
145 static void target_fabric_mappedlun_unlink(
146 struct config_item *lun_acl_ci,
147 struct config_item *lun_ci)
149 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
150 struct se_lun_acl, se_lun_group);
151 struct se_lun *lun = container_of(to_config_group(lun_ci),
152 struct se_lun, lun_group);
154 core_dev_del_initiator_node_lun_acl(lun, lacl);
157 static struct se_lun_acl *item_to_lun_acl(struct config_item *item)
159 return container_of(to_config_group(item), struct se_lun_acl,
163 static ssize_t target_fabric_mappedlun_write_protect_show(
164 struct config_item *item, char *page)
166 struct se_lun_acl *lacl = item_to_lun_acl(item);
167 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
168 struct se_dev_entry *deve;
172 deve = target_nacl_find_deve(se_nacl, lacl->mapped_lun);
174 len = sprintf(page, "%d\n", deve->lun_access_ro);
181 static ssize_t target_fabric_mappedlun_write_protect_store(
182 struct config_item *item, const char *page, size_t count)
184 struct se_lun_acl *lacl = item_to_lun_acl(item);
185 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
186 struct se_portal_group *se_tpg = se_nacl->se_tpg;
190 ret = kstrtoul(page, 0, &wp);
194 if ((wp != 1) && (wp != 0))
197 /* wp=1 means lun_access_ro=true */
198 core_update_device_list_access(lacl->mapped_lun, wp, lacl->se_lun_nacl);
200 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
201 " Mapped LUN: %llu Write Protect bit to %s\n",
202 se_tpg->se_tpg_tfo->get_fabric_name(),
203 se_nacl->initiatorname, lacl->mapped_lun, (wp) ? "ON" : "OFF");
209 CONFIGFS_ATTR(target_fabric_mappedlun_, write_protect);
211 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
212 &target_fabric_mappedlun_attr_write_protect,
216 static void target_fabric_mappedlun_release(struct config_item *item)
218 struct se_lun_acl *lacl = container_of(to_config_group(item),
219 struct se_lun_acl, se_lun_group);
220 struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
222 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
225 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
226 .release = target_fabric_mappedlun_release,
227 .allow_link = target_fabric_mappedlun_link,
228 .drop_link = target_fabric_mappedlun_unlink,
231 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
232 target_fabric_mappedlun_attrs);
234 /* End of tfc_tpg_mappedlun_cit */
236 /* Start of tfc_tpg_mappedlun_port_cit */
238 static struct config_group *target_core_mappedlun_stat_mkdir(
239 struct config_group *group,
242 return ERR_PTR(-ENOSYS);
245 static void target_core_mappedlun_stat_rmdir(
246 struct config_group *group,
247 struct config_item *item)
252 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
253 .make_group = target_core_mappedlun_stat_mkdir,
254 .drop_item = target_core_mappedlun_stat_rmdir,
257 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
260 /* End of tfc_tpg_mappedlun_port_cit */
262 TF_CIT_SETUP_DRV(tpg_nacl_attrib, NULL, NULL);
263 TF_CIT_SETUP_DRV(tpg_nacl_auth, NULL, NULL);
264 TF_CIT_SETUP_DRV(tpg_nacl_param, NULL, NULL);
266 /* Start of tfc_tpg_nacl_base_cit */
268 static struct config_group *target_fabric_make_mappedlun(
269 struct config_group *group,
272 struct se_node_acl *se_nacl = container_of(group,
273 struct se_node_acl, acl_group);
274 struct se_portal_group *se_tpg = se_nacl->se_tpg;
275 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
276 struct se_lun_acl *lacl = NULL;
278 unsigned long long mapped_lun;
281 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
283 pr_err("Unable to allocate memory for name buf\n");
284 return ERR_PTR(-ENOMEM);
286 snprintf(buf, strlen(name) + 1, "%s", name);
288 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
290 if (strstr(buf, "lun_") != buf) {
291 pr_err("Unable to locate \"lun_\" from buf: %s"
292 " name: %s\n", buf, name);
297 * Determine the Mapped LUN value. This is what the SCSI Initiator
298 * Port will actually see.
300 ret = kstrtoull(buf + 4, 0, &mapped_lun);
304 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
311 config_group_init_type_name(&lacl->se_lun_group, name,
312 &tf->tf_tpg_mappedlun_cit);
314 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
315 "statistics", &tf->tf_tpg_mappedlun_stat_cit);
316 configfs_add_default_group(&lacl->ml_stat_grps.stat_group,
317 &lacl->se_lun_group);
319 target_stat_setup_mappedlun_default_groups(lacl);
322 return &lacl->se_lun_group;
329 static void target_fabric_drop_mappedlun(
330 struct config_group *group,
331 struct config_item *item)
333 struct se_lun_acl *lacl = container_of(to_config_group(item),
334 struct se_lun_acl, se_lun_group);
336 configfs_remove_default_groups(&lacl->ml_stat_grps.stat_group);
337 configfs_remove_default_groups(&lacl->se_lun_group);
339 config_item_put(item);
342 static void target_fabric_nacl_base_release(struct config_item *item)
344 struct se_node_acl *se_nacl = container_of(to_config_group(item),
345 struct se_node_acl, acl_group);
347 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
348 core_tpg_del_initiator_node_acl(se_nacl);
351 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
352 .release = target_fabric_nacl_base_release,
355 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
356 .make_group = target_fabric_make_mappedlun,
357 .drop_item = target_fabric_drop_mappedlun,
360 TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
361 &target_fabric_nacl_base_group_ops);
363 /* End of tfc_tpg_nacl_base_cit */
365 /* Start of tfc_node_fabric_stats_cit */
367 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
368 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
370 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
372 /* End of tfc_wwn_fabric_stats_cit */
374 /* Start of tfc_tpg_nacl_cit */
376 static struct config_group *target_fabric_make_nodeacl(
377 struct config_group *group,
380 struct se_portal_group *se_tpg = container_of(group,
381 struct se_portal_group, tpg_acl_group);
382 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
383 struct se_node_acl *se_nacl;
385 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
387 return ERR_CAST(se_nacl);
389 config_group_init_type_name(&se_nacl->acl_group, name,
390 &tf->tf_tpg_nacl_base_cit);
392 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
393 &tf->tf_tpg_nacl_attrib_cit);
394 configfs_add_default_group(&se_nacl->acl_attrib_group,
395 &se_nacl->acl_group);
397 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
398 &tf->tf_tpg_nacl_auth_cit);
399 configfs_add_default_group(&se_nacl->acl_auth_group,
400 &se_nacl->acl_group);
402 config_group_init_type_name(&se_nacl->acl_param_group, "param",
403 &tf->tf_tpg_nacl_param_cit);
404 configfs_add_default_group(&se_nacl->acl_param_group,
405 &se_nacl->acl_group);
407 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
408 "fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
409 configfs_add_default_group(&se_nacl->acl_fabric_stat_group,
410 &se_nacl->acl_group);
412 if (tf->tf_ops->fabric_init_nodeacl) {
413 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
415 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
416 core_tpg_del_initiator_node_acl(se_nacl);
421 return &se_nacl->acl_group;
424 static void target_fabric_drop_nodeacl(
425 struct config_group *group,
426 struct config_item *item)
428 struct se_node_acl *se_nacl = container_of(to_config_group(item),
429 struct se_node_acl, acl_group);
431 configfs_remove_default_groups(&se_nacl->acl_group);
434 * struct se_node_acl free is done in target_fabric_nacl_base_release()
436 config_item_put(item);
439 static struct configfs_group_operations target_fabric_nacl_group_ops = {
440 .make_group = target_fabric_make_nodeacl,
441 .drop_item = target_fabric_drop_nodeacl,
444 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
446 /* End of tfc_tpg_nacl_cit */
448 /* Start of tfc_tpg_np_base_cit */
450 static void target_fabric_np_base_release(struct config_item *item)
452 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
453 struct se_tpg_np, tpg_np_group);
454 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
455 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
457 tf->tf_ops->fabric_drop_np(se_tpg_np);
460 static struct configfs_item_operations target_fabric_np_base_item_ops = {
461 .release = target_fabric_np_base_release,
464 TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
466 /* End of tfc_tpg_np_base_cit */
468 /* Start of tfc_tpg_np_cit */
470 static struct config_group *target_fabric_make_np(
471 struct config_group *group,
474 struct se_portal_group *se_tpg = container_of(group,
475 struct se_portal_group, tpg_np_group);
476 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
477 struct se_tpg_np *se_tpg_np;
479 if (!tf->tf_ops->fabric_make_np) {
480 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
481 return ERR_PTR(-ENOSYS);
484 se_tpg_np = tf->tf_ops->fabric_make_np(se_tpg, group, name);
485 if (!se_tpg_np || IS_ERR(se_tpg_np))
486 return ERR_PTR(-EINVAL);
488 se_tpg_np->tpg_np_parent = se_tpg;
489 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
490 &tf->tf_tpg_np_base_cit);
492 return &se_tpg_np->tpg_np_group;
495 static void target_fabric_drop_np(
496 struct config_group *group,
497 struct config_item *item)
500 * struct se_tpg_np is released via target_fabric_np_base_release()
502 config_item_put(item);
505 static struct configfs_group_operations target_fabric_np_group_ops = {
506 .make_group = &target_fabric_make_np,
507 .drop_item = &target_fabric_drop_np,
510 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
512 /* End of tfc_tpg_np_cit */
514 /* Start of tfc_tpg_port_cit */
516 static struct se_lun *item_to_lun(struct config_item *item)
518 return container_of(to_config_group(item), struct se_lun,
522 static ssize_t target_fabric_port_alua_tg_pt_gp_show(struct config_item *item,
525 struct se_lun *lun = item_to_lun(item);
527 if (!lun || !lun->lun_se_dev)
530 return core_alua_show_tg_pt_gp_info(lun, page);
533 static ssize_t target_fabric_port_alua_tg_pt_gp_store(struct config_item *item,
534 const char *page, size_t count)
536 struct se_lun *lun = item_to_lun(item);
538 if (!lun || !lun->lun_se_dev)
541 return core_alua_store_tg_pt_gp_info(lun, page, count);
544 static ssize_t target_fabric_port_alua_tg_pt_offline_show(
545 struct config_item *item, char *page)
547 struct se_lun *lun = item_to_lun(item);
549 if (!lun || !lun->lun_se_dev)
552 return core_alua_show_offline_bit(lun, page);
555 static ssize_t target_fabric_port_alua_tg_pt_offline_store(
556 struct config_item *item, const char *page, size_t count)
558 struct se_lun *lun = item_to_lun(item);
560 if (!lun || !lun->lun_se_dev)
563 return core_alua_store_offline_bit(lun, page, count);
566 static ssize_t target_fabric_port_alua_tg_pt_status_show(
567 struct config_item *item, char *page)
569 struct se_lun *lun = item_to_lun(item);
571 if (!lun || !lun->lun_se_dev)
574 return core_alua_show_secondary_status(lun, page);
577 static ssize_t target_fabric_port_alua_tg_pt_status_store(
578 struct config_item *item, const char *page, size_t count)
580 struct se_lun *lun = item_to_lun(item);
582 if (!lun || !lun->lun_se_dev)
585 return core_alua_store_secondary_status(lun, page, count);
588 static ssize_t target_fabric_port_alua_tg_pt_write_md_show(
589 struct config_item *item, char *page)
591 struct se_lun *lun = item_to_lun(item);
593 if (!lun || !lun->lun_se_dev)
596 return core_alua_show_secondary_write_metadata(lun, page);
599 static ssize_t target_fabric_port_alua_tg_pt_write_md_store(
600 struct config_item *item, const char *page, size_t count)
602 struct se_lun *lun = item_to_lun(item);
604 if (!lun || !lun->lun_se_dev)
607 return core_alua_store_secondary_write_metadata(lun, page, count);
610 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_gp);
611 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_offline);
612 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_status);
613 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_write_md);
615 static struct configfs_attribute *target_fabric_port_attrs[] = {
616 &target_fabric_port_attr_alua_tg_pt_gp,
617 &target_fabric_port_attr_alua_tg_pt_offline,
618 &target_fabric_port_attr_alua_tg_pt_status,
619 &target_fabric_port_attr_alua_tg_pt_write_md,
623 static int target_fabric_port_link(
624 struct config_item *lun_ci,
625 struct config_item *se_dev_ci)
627 struct config_item *tpg_ci;
628 struct se_lun *lun = container_of(to_config_group(lun_ci),
629 struct se_lun, lun_group);
630 struct se_portal_group *se_tpg;
631 struct se_device *dev =
632 container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
633 struct target_fabric_configfs *tf;
636 if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
637 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
638 " %p to struct se_device: %p\n", se_dev_ci, dev);
642 if (!(dev->dev_flags & DF_CONFIGURED)) {
643 pr_err("se_device not configured yet, cannot port link\n");
647 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
648 se_tpg = container_of(to_config_group(tpg_ci),
649 struct se_portal_group, tpg_group);
650 tf = se_tpg->se_tpg_wwn->wwn_tf;
652 if (lun->lun_se_dev != NULL) {
653 pr_err("Port Symlink already exists\n");
657 ret = core_dev_add_lun(se_tpg, dev, lun);
659 pr_err("core_dev_add_lun() failed: %d\n", ret);
663 if (tf->tf_ops->fabric_post_link) {
665 * Call the optional fabric_post_link() to allow a
666 * fabric module to setup any additional state once
667 * core_dev_add_lun() has been called..
669 tf->tf_ops->fabric_post_link(se_tpg, lun);
677 static void target_fabric_port_unlink(
678 struct config_item *lun_ci,
679 struct config_item *se_dev_ci)
681 struct se_lun *lun = container_of(to_config_group(lun_ci),
682 struct se_lun, lun_group);
683 struct se_portal_group *se_tpg = lun->lun_tpg;
684 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
686 if (tf->tf_ops->fabric_pre_unlink) {
688 * Call the optional fabric_pre_unlink() to allow a
689 * fabric module to release any additional stat before
690 * core_dev_del_lun() is called.
692 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
695 core_dev_del_lun(se_tpg, lun);
698 static void target_fabric_port_release(struct config_item *item)
700 struct se_lun *lun = container_of(to_config_group(item),
701 struct se_lun, lun_group);
703 kfree_rcu(lun, rcu_head);
706 static struct configfs_item_operations target_fabric_port_item_ops = {
707 .release = target_fabric_port_release,
708 .allow_link = target_fabric_port_link,
709 .drop_link = target_fabric_port_unlink,
712 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
714 /* End of tfc_tpg_port_cit */
716 /* Start of tfc_tpg_port_stat_cit */
718 static struct config_group *target_core_port_stat_mkdir(
719 struct config_group *group,
722 return ERR_PTR(-ENOSYS);
725 static void target_core_port_stat_rmdir(
726 struct config_group *group,
727 struct config_item *item)
732 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
733 .make_group = target_core_port_stat_mkdir,
734 .drop_item = target_core_port_stat_rmdir,
737 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
739 /* End of tfc_tpg_port_stat_cit */
741 /* Start of tfc_tpg_lun_cit */
743 static struct config_group *target_fabric_make_lun(
744 struct config_group *group,
748 struct se_portal_group *se_tpg = container_of(group,
749 struct se_portal_group, tpg_lun_group);
750 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
751 unsigned long long unpacked_lun;
754 if (strstr(name, "lun_") != name) {
755 pr_err("Unable to locate \'_\" in"
756 " \"lun_$LUN_NUMBER\"\n");
757 return ERR_PTR(-EINVAL);
759 errno = kstrtoull(name + 4, 0, &unpacked_lun);
761 return ERR_PTR(errno);
763 lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
765 return ERR_CAST(lun);
767 config_group_init_type_name(&lun->lun_group, name,
768 &tf->tf_tpg_port_cit);
770 config_group_init_type_name(&lun->port_stat_grps.stat_group,
771 "statistics", &tf->tf_tpg_port_stat_cit);
772 configfs_add_default_group(&lun->port_stat_grps.stat_group,
775 target_stat_setup_port_default_groups(lun);
777 return &lun->lun_group;
780 static void target_fabric_drop_lun(
781 struct config_group *group,
782 struct config_item *item)
784 struct se_lun *lun = container_of(to_config_group(item),
785 struct se_lun, lun_group);
787 configfs_remove_default_groups(&lun->port_stat_grps.stat_group);
788 configfs_remove_default_groups(&lun->lun_group);
790 config_item_put(item);
793 static struct configfs_group_operations target_fabric_lun_group_ops = {
794 .make_group = &target_fabric_make_lun,
795 .drop_item = &target_fabric_drop_lun,
798 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
800 /* End of tfc_tpg_lun_cit */
802 TF_CIT_SETUP_DRV(tpg_attrib, NULL, NULL);
803 TF_CIT_SETUP_DRV(tpg_auth, NULL, NULL);
804 TF_CIT_SETUP_DRV(tpg_param, NULL, NULL);
806 /* Start of tfc_tpg_base_cit */
808 static void target_fabric_tpg_release(struct config_item *item)
810 struct se_portal_group *se_tpg = container_of(to_config_group(item),
811 struct se_portal_group, tpg_group);
812 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
813 struct target_fabric_configfs *tf = wwn->wwn_tf;
815 tf->tf_ops->fabric_drop_tpg(se_tpg);
818 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
819 .release = target_fabric_tpg_release,
822 TF_CIT_SETUP_DRV(tpg_base, &target_fabric_tpg_base_item_ops, NULL);
824 /* End of tfc_tpg_base_cit */
826 /* Start of tfc_tpg_cit */
828 static struct config_group *target_fabric_make_tpg(
829 struct config_group *group,
832 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
833 struct target_fabric_configfs *tf = wwn->wwn_tf;
834 struct se_portal_group *se_tpg;
836 if (!tf->tf_ops->fabric_make_tpg) {
837 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
838 return ERR_PTR(-ENOSYS);
841 se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
842 if (!se_tpg || IS_ERR(se_tpg))
843 return ERR_PTR(-EINVAL);
845 config_group_init_type_name(&se_tpg->tpg_group, name,
846 &tf->tf_tpg_base_cit);
848 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
849 &tf->tf_tpg_lun_cit);
850 configfs_add_default_group(&se_tpg->tpg_lun_group,
853 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
855 configfs_add_default_group(&se_tpg->tpg_np_group,
858 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
859 &tf->tf_tpg_nacl_cit);
860 configfs_add_default_group(&se_tpg->tpg_acl_group,
863 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
864 &tf->tf_tpg_attrib_cit);
865 configfs_add_default_group(&se_tpg->tpg_attrib_group,
868 config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
869 &tf->tf_tpg_auth_cit);
870 configfs_add_default_group(&se_tpg->tpg_auth_group,
873 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
874 &tf->tf_tpg_param_cit);
875 configfs_add_default_group(&se_tpg->tpg_param_group,
878 return &se_tpg->tpg_group;
881 static void target_fabric_drop_tpg(
882 struct config_group *group,
883 struct config_item *item)
885 struct se_portal_group *se_tpg = container_of(to_config_group(item),
886 struct se_portal_group, tpg_group);
888 configfs_remove_default_groups(&se_tpg->tpg_group);
889 config_item_put(item);
892 static void target_fabric_release_wwn(struct config_item *item)
894 struct se_wwn *wwn = container_of(to_config_group(item),
895 struct se_wwn, wwn_group);
896 struct target_fabric_configfs *tf = wwn->wwn_tf;
898 configfs_remove_default_groups(&wwn->fabric_stat_group);
899 tf->tf_ops->fabric_drop_wwn(wwn);
902 static struct configfs_item_operations target_fabric_tpg_item_ops = {
903 .release = target_fabric_release_wwn,
906 static struct configfs_group_operations target_fabric_tpg_group_ops = {
907 .make_group = target_fabric_make_tpg,
908 .drop_item = target_fabric_drop_tpg,
911 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
914 /* End of tfc_tpg_cit */
916 /* Start of tfc_wwn_fabric_stats_cit */
918 * This is used as a placeholder for struct se_wwn->fabric_stat_group
919 * to allow fabrics access to ->fabric_stat_group->default_groups[]
921 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
923 /* End of tfc_wwn_fabric_stats_cit */
925 /* Start of tfc_wwn_cit */
927 static struct config_group *target_fabric_make_wwn(
928 struct config_group *group,
931 struct target_fabric_configfs *tf = container_of(group,
932 struct target_fabric_configfs, tf_group);
935 if (!tf->tf_ops->fabric_make_wwn) {
936 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
937 return ERR_PTR(-ENOSYS);
940 wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
941 if (!wwn || IS_ERR(wwn))
942 return ERR_PTR(-EINVAL);
946 config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
948 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
949 &tf->tf_wwn_fabric_stats_cit);
950 configfs_add_default_group(&wwn->fabric_stat_group, &wwn->wwn_group);
952 if (tf->tf_ops->add_wwn_groups)
953 tf->tf_ops->add_wwn_groups(wwn);
954 return &wwn->wwn_group;
957 static void target_fabric_drop_wwn(
958 struct config_group *group,
959 struct config_item *item)
961 struct se_wwn *wwn = container_of(to_config_group(item),
962 struct se_wwn, wwn_group);
964 configfs_remove_default_groups(&wwn->wwn_group);
965 config_item_put(item);
968 static struct configfs_group_operations target_fabric_wwn_group_ops = {
969 .make_group = target_fabric_make_wwn,
970 .drop_item = target_fabric_drop_wwn,
973 TF_CIT_SETUP_DRV(wwn, NULL, &target_fabric_wwn_group_ops);
974 TF_CIT_SETUP_DRV(discovery, NULL, NULL);
976 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
978 target_fabric_setup_discovery_cit(tf);
979 target_fabric_setup_wwn_cit(tf);
980 target_fabric_setup_wwn_fabric_stats_cit(tf);
981 target_fabric_setup_tpg_cit(tf);
982 target_fabric_setup_tpg_base_cit(tf);
983 target_fabric_setup_tpg_port_cit(tf);
984 target_fabric_setup_tpg_port_stat_cit(tf);
985 target_fabric_setup_tpg_lun_cit(tf);
986 target_fabric_setup_tpg_np_cit(tf);
987 target_fabric_setup_tpg_np_base_cit(tf);
988 target_fabric_setup_tpg_attrib_cit(tf);
989 target_fabric_setup_tpg_auth_cit(tf);
990 target_fabric_setup_tpg_param_cit(tf);
991 target_fabric_setup_tpg_nacl_cit(tf);
992 target_fabric_setup_tpg_nacl_base_cit(tf);
993 target_fabric_setup_tpg_nacl_attrib_cit(tf);
994 target_fabric_setup_tpg_nacl_auth_cit(tf);
995 target_fabric_setup_tpg_nacl_param_cit(tf);
996 target_fabric_setup_tpg_nacl_stat_cit(tf);
997 target_fabric_setup_tpg_mappedlun_cit(tf);
998 target_fabric_setup_tpg_mappedlun_stat_cit(tf);