1 /*******************************************************************************
2 * Filename: target_core_fabric_configfs.c
3  *
4  * This file contains generic fabric module configfs infrastructure for
5  * TCM v4.x code
6  *
7  * (c) Copyright 2010-2012 RisingTide Systems LLC.
8  *
9  * Nicholas A. Bellinger <nab@linux-iscsi.org>
10 *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation; either version 2 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  ****************************************************************************/
21 
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/utsname.h>
25 #include <linux/init.h>
26 #include <linux/fs.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>
35 
36 #include <target/target_core_base.h>
37 #include <target/target_core_fabric.h>
38 #include <target/target_core_fabric_configfs.h>
39 #include <target/target_core_configfs.h>
40 #include <target/configfs_macros.h>
41 
42 #include "target_core_internal.h"
43 #include "target_core_alua.h"
44 #include "target_core_pr.h"
45 
46 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs)		\
47 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
48 {									\
49 	struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl;	\
50 	struct config_item_type *cit = &tfc->tfc_##_name##_cit;		\
51 									\
52 	cit->ct_item_ops = _item_ops;					\
53 	cit->ct_group_ops = _group_ops;					\
54 	cit->ct_attrs = _attrs;						\
55 	cit->ct_owner = tf->tf_module;					\
56 	pr_debug("Setup generic %s\n", __stringify(_name));		\
57 }
58 
59 /* Start of tfc_tpg_mappedlun_cit */
60 
61 static int target_fabric_mappedlun_link(
62 	struct config_item *lun_acl_ci,
63 	struct config_item *lun_ci)
64 {
65 	struct se_dev_entry *deve;
66 	struct se_lun *lun = container_of(to_config_group(lun_ci),
67 			struct se_lun, lun_group);
68 	struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
69 			struct se_lun_acl, se_lun_group);
70 	struct se_portal_group *se_tpg;
71 	struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
72 	int ret = 0, lun_access;
73 
74 	if (lun->lun_link_magic != SE_LUN_LINK_MAGIC) {
75 		pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
76 			" %p to struct lun: %p\n", lun_ci, lun);
77 		return -EFAULT;
78 	}
79 	/*
80 	 * Ensure that the source port exists
81 	 */
82 	if (!lun->lun_sep || !lun->lun_sep->sep_tpg) {
83 		pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
84 				"_tpg does not exist\n");
85 		return -EINVAL;
86 	}
87 	se_tpg = lun->lun_sep->sep_tpg;
88 
89 	nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
90 	tpg_ci = &nacl_ci->ci_group->cg_item;
91 	wwn_ci = &tpg_ci->ci_group->cg_item;
92 	tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
93 	wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
94 	/*
95 	 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
96 	 */
97 	if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
98 		pr_err("Illegal Initiator ACL SymLink outside of %s\n",
99 			config_item_name(wwn_ci));
100 		return -EINVAL;
101 	}
102 	if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
103 		pr_err("Illegal Initiator ACL Symlink outside of %s"
104 			" TPGT: %s\n", config_item_name(wwn_ci),
105 			config_item_name(tpg_ci));
106 		return -EINVAL;
107 	}
108 	/*
109 	 * If this struct se_node_acl was dynamically generated with
110 	 * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
111 	 * which be will write protected (READ-ONLY) when
112 	 * tpg_1/attrib/demo_mode_write_protect=1
113 	 */
114 	spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
115 	deve = lacl->se_lun_nacl->device_list[lacl->mapped_lun];
116 	if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
117 		lun_access = deve->lun_flags;
118 	else
119 		lun_access =
120 			(se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
121 				se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
122 					   TRANSPORT_LUNFLAGS_READ_WRITE;
123 	spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
124 	/*
125 	 * Determine the actual mapped LUN value user wants..
126 	 *
127 	 * This value is what the SCSI Initiator actually sees the
128 	 * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
129 	 */
130 	ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
131 			lun->unpacked_lun, lun_access);
132 
133 	return (ret < 0) ? -EINVAL : 0;
134 }
135 
136 static int target_fabric_mappedlun_unlink(
137 	struct config_item *lun_acl_ci,
138 	struct config_item *lun_ci)
139 {
140 	struct se_lun *lun;
141 	struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
142 			struct se_lun_acl, se_lun_group);
143 	struct se_node_acl *nacl = lacl->se_lun_nacl;
144 	struct se_dev_entry *deve = nacl->device_list[lacl->mapped_lun];
145 	struct se_portal_group *se_tpg;
146 	/*
147 	 * Determine if the underlying MappedLUN has already been released..
148 	 */
149 	if (!deve->se_lun)
150 		return 0;
151 
152 	lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
153 	se_tpg = lun->lun_sep->sep_tpg;
154 
155 	core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
156 	return 0;
157 }
158 
159 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
160 #define TCM_MAPPEDLUN_ATTR(_name, _mode)				\
161 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
162 	__CONFIGFS_EATTR(_name, _mode,					\
163 	target_fabric_mappedlun_show_##_name,				\
164 	target_fabric_mappedlun_store_##_name);
165 
166 static ssize_t target_fabric_mappedlun_show_write_protect(
167 	struct se_lun_acl *lacl,
168 	char *page)
169 {
170 	struct se_node_acl *se_nacl = lacl->se_lun_nacl;
171 	struct se_dev_entry *deve;
172 	ssize_t len;
173 
174 	spin_lock_irq(&se_nacl->device_list_lock);
175 	deve = se_nacl->device_list[lacl->mapped_lun];
176 	len = sprintf(page, "%d\n",
177 			(deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
178 			1 : 0);
179 	spin_unlock_irq(&se_nacl->device_list_lock);
180 
181 	return len;
182 }
183 
184 static ssize_t target_fabric_mappedlun_store_write_protect(
185 	struct se_lun_acl *lacl,
186 	const char *page,
187 	size_t count)
188 {
189 	struct se_node_acl *se_nacl = lacl->se_lun_nacl;
190 	struct se_portal_group *se_tpg = se_nacl->se_tpg;
191 	unsigned long op;
192 
193 	if (strict_strtoul(page, 0, &op))
194 		return -EINVAL;
195 
196 	if ((op != 1) && (op != 0))
197 		return -EINVAL;
198 
199 	core_update_device_list_access(lacl->mapped_lun, (op) ?
200 			TRANSPORT_LUNFLAGS_READ_ONLY :
201 			TRANSPORT_LUNFLAGS_READ_WRITE,
202 			lacl->se_lun_nacl);
203 
204 	pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
205 		" Mapped LUN: %u Write Protect bit to %s\n",
206 		se_tpg->se_tpg_tfo->get_fabric_name(),
207 		lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
208 
209 	return count;
210 
211 }
212 
213 TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
214 
215 CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
216 
217 static void target_fabric_mappedlun_release(struct config_item *item)
218 {
219 	struct se_lun_acl *lacl = container_of(to_config_group(item),
220 				struct se_lun_acl, se_lun_group);
221 	struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
222 
223 	core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
224 }
225 
226 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
227 	&target_fabric_mappedlun_write_protect.attr,
228 	NULL,
229 };
230 
231 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
232 	.release		= target_fabric_mappedlun_release,
233 	.show_attribute		= target_fabric_mappedlun_attr_show,
234 	.store_attribute	= target_fabric_mappedlun_attr_store,
235 	.allow_link		= target_fabric_mappedlun_link,
236 	.drop_link		= target_fabric_mappedlun_unlink,
237 };
238 
239 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
240 		target_fabric_mappedlun_attrs);
241 
242 /* End of tfc_tpg_mappedlun_cit */
243 
244 /* Start of tfc_tpg_mappedlun_port_cit */
245 
246 static struct config_group *target_core_mappedlun_stat_mkdir(
247 	struct config_group *group,
248 	const char *name)
249 {
250 	return ERR_PTR(-ENOSYS);
251 }
252 
253 static void target_core_mappedlun_stat_rmdir(
254 	struct config_group *group,
255 	struct config_item *item)
256 {
257 	return;
258 }
259 
260 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
261 	.make_group		= target_core_mappedlun_stat_mkdir,
262 	.drop_item		= target_core_mappedlun_stat_rmdir,
263 };
264 
265 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
266 		NULL);
267 
268 /* End of tfc_tpg_mappedlun_port_cit */
269 
270 /* Start of tfc_tpg_nacl_attrib_cit */
271 
272 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
273 
274 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
275 	.show_attribute		= target_fabric_nacl_attrib_attr_show,
276 	.store_attribute	= target_fabric_nacl_attrib_attr_store,
277 };
278 
279 TF_CIT_SETUP(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, NULL);
280 
281 /* End of tfc_tpg_nacl_attrib_cit */
282 
283 /* Start of tfc_tpg_nacl_auth_cit */
284 
285 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
286 
287 static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
288 	.show_attribute		= target_fabric_nacl_auth_attr_show,
289 	.store_attribute	= target_fabric_nacl_auth_attr_store,
290 };
291 
292 TF_CIT_SETUP(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, NULL);
293 
294 /* End of tfc_tpg_nacl_auth_cit */
295 
296 /* Start of tfc_tpg_nacl_param_cit */
297 
298 CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
299 
300 static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
301 	.show_attribute		= target_fabric_nacl_param_attr_show,
302 	.store_attribute	= target_fabric_nacl_param_attr_store,
303 };
304 
305 TF_CIT_SETUP(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, NULL);
306 
307 /* End of tfc_tpg_nacl_param_cit */
308 
309 /* Start of tfc_tpg_nacl_base_cit */
310 
311 CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
312 
313 static struct config_group *target_fabric_make_mappedlun(
314 	struct config_group *group,
315 	const char *name)
316 {
317 	struct se_node_acl *se_nacl = container_of(group,
318 			struct se_node_acl, acl_group);
319 	struct se_portal_group *se_tpg = se_nacl->se_tpg;
320 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
321 	struct se_lun_acl *lacl;
322 	struct config_item *acl_ci;
323 	struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
324 	char *buf;
325 	unsigned long mapped_lun;
326 	int ret = 0;
327 
328 	acl_ci = &group->cg_item;
329 	if (!acl_ci) {
330 		pr_err("Unable to locatel acl_ci\n");
331 		return NULL;
332 	}
333 
334 	buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
335 	if (!buf) {
336 		pr_err("Unable to allocate memory for name buf\n");
337 		return ERR_PTR(-ENOMEM);
338 	}
339 	snprintf(buf, strlen(name) + 1, "%s", name);
340 	/*
341 	 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
342 	 */
343 	if (strstr(buf, "lun_") != buf) {
344 		pr_err("Unable to locate \"lun_\" from buf: %s"
345 			" name: %s\n", buf, name);
346 		ret = -EINVAL;
347 		goto out;
348 	}
349 	/*
350 	 * Determine the Mapped LUN value.  This is what the SCSI Initiator
351 	 * Port will actually see.
352 	 */
353 	if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) {
354 		ret = -EINVAL;
355 		goto out;
356 	}
357 	if (mapped_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
358 		pr_err("Mapped LUN: %lu exceeds TRANSPORT_MAX_LUNS_PER_TPG"
359 			"-1: %u for Target Portal Group: %u\n", mapped_lun,
360 			TRANSPORT_MAX_LUNS_PER_TPG-1,
361 			se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
362 		ret = -EINVAL;
363 		goto out;
364 	}
365 
366 	lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
367 			mapped_lun, &ret);
368 	if (!lacl) {
369 		ret = -EINVAL;
370 		goto out;
371 	}
372 
373 	lacl_cg = &lacl->se_lun_group;
374 	lacl_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
375 				GFP_KERNEL);
376 	if (!lacl_cg->default_groups) {
377 		pr_err("Unable to allocate lacl_cg->default_groups\n");
378 		ret = -ENOMEM;
379 		goto out;
380 	}
381 
382 	config_group_init_type_name(&lacl->se_lun_group, name,
383 			&TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
384 	config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
385 			"statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
386 	lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
387 	lacl_cg->default_groups[1] = NULL;
388 
389 	ml_stat_grp = &lacl->ml_stat_grps.stat_group;
390 	ml_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 3,
391 				GFP_KERNEL);
392 	if (!ml_stat_grp->default_groups) {
393 		pr_err("Unable to allocate ml_stat_grp->default_groups\n");
394 		ret = -ENOMEM;
395 		goto out;
396 	}
397 	target_stat_setup_mappedlun_default_groups(lacl);
398 
399 	kfree(buf);
400 	return &lacl->se_lun_group;
401 out:
402 	if (lacl_cg)
403 		kfree(lacl_cg->default_groups);
404 	kfree(buf);
405 	return ERR_PTR(ret);
406 }
407 
408 static void target_fabric_drop_mappedlun(
409 	struct config_group *group,
410 	struct config_item *item)
411 {
412 	struct se_lun_acl *lacl = container_of(to_config_group(item),
413 			struct se_lun_acl, se_lun_group);
414 	struct config_item *df_item;
415 	struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
416 	int i;
417 
418 	ml_stat_grp = &lacl->ml_stat_grps.stat_group;
419 	for (i = 0; ml_stat_grp->default_groups[i]; i++) {
420 		df_item = &ml_stat_grp->default_groups[i]->cg_item;
421 		ml_stat_grp->default_groups[i] = NULL;
422 		config_item_put(df_item);
423 	}
424 	kfree(ml_stat_grp->default_groups);
425 
426 	lacl_cg = &lacl->se_lun_group;
427 	for (i = 0; lacl_cg->default_groups[i]; i++) {
428 		df_item = &lacl_cg->default_groups[i]->cg_item;
429 		lacl_cg->default_groups[i] = NULL;
430 		config_item_put(df_item);
431 	}
432 	kfree(lacl_cg->default_groups);
433 
434 	config_item_put(item);
435 }
436 
437 static void target_fabric_nacl_base_release(struct config_item *item)
438 {
439 	struct se_node_acl *se_nacl = container_of(to_config_group(item),
440 			struct se_node_acl, acl_group);
441 	struct se_portal_group *se_tpg = se_nacl->se_tpg;
442 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
443 
444 	tf->tf_ops.fabric_drop_nodeacl(se_nacl);
445 }
446 
447 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
448 	.release		= target_fabric_nacl_base_release,
449 	.show_attribute		= target_fabric_nacl_base_attr_show,
450 	.store_attribute	= target_fabric_nacl_base_attr_store,
451 };
452 
453 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
454 	.make_group		= target_fabric_make_mappedlun,
455 	.drop_item		= target_fabric_drop_mappedlun,
456 };
457 
458 TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
459 		&target_fabric_nacl_base_group_ops, NULL);
460 
461 /* End of tfc_tpg_nacl_base_cit */
462 
463 /* Start of tfc_node_fabric_stats_cit */
464 /*
465  * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
466  * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
467  */
468 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
469 
470 /* End of tfc_wwn_fabric_stats_cit */
471 
472 /* Start of tfc_tpg_nacl_cit */
473 
474 static struct config_group *target_fabric_make_nodeacl(
475 	struct config_group *group,
476 	const char *name)
477 {
478 	struct se_portal_group *se_tpg = container_of(group,
479 			struct se_portal_group, tpg_acl_group);
480 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
481 	struct se_node_acl *se_nacl;
482 	struct config_group *nacl_cg;
483 
484 	if (!tf->tf_ops.fabric_make_nodeacl) {
485 		pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n");
486 		return ERR_PTR(-ENOSYS);
487 	}
488 
489 	se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name);
490 	if (IS_ERR(se_nacl))
491 		return ERR_CAST(se_nacl);
492 
493 	nacl_cg = &se_nacl->acl_group;
494 	nacl_cg->default_groups = se_nacl->acl_default_groups;
495 	nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
496 	nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
497 	nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
498 	nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
499 	nacl_cg->default_groups[4] = NULL;
500 
501 	config_group_init_type_name(&se_nacl->acl_group, name,
502 			&TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
503 	config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
504 			&TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
505 	config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
506 			&TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
507 	config_group_init_type_name(&se_nacl->acl_param_group, "param",
508 			&TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
509 	config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
510 			"fabric_statistics",
511 			&TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
512 
513 	return &se_nacl->acl_group;
514 }
515 
516 static void target_fabric_drop_nodeacl(
517 	struct config_group *group,
518 	struct config_item *item)
519 {
520 	struct se_node_acl *se_nacl = container_of(to_config_group(item),
521 			struct se_node_acl, acl_group);
522 	struct config_item *df_item;
523 	struct config_group *nacl_cg;
524 	int i;
525 
526 	nacl_cg = &se_nacl->acl_group;
527 	for (i = 0; nacl_cg->default_groups[i]; i++) {
528 		df_item = &nacl_cg->default_groups[i]->cg_item;
529 		nacl_cg->default_groups[i] = NULL;
530 		config_item_put(df_item);
531 	}
532 	/*
533 	 * struct se_node_acl free is done in target_fabric_nacl_base_release()
534 	 */
535 	config_item_put(item);
536 }
537 
538 static struct configfs_group_operations target_fabric_nacl_group_ops = {
539 	.make_group	= target_fabric_make_nodeacl,
540 	.drop_item	= target_fabric_drop_nodeacl,
541 };
542 
543 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
544 
545 /* End of tfc_tpg_nacl_cit */
546 
547 /* Start of tfc_tpg_np_base_cit */
548 
549 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
550 
551 static void target_fabric_np_base_release(struct config_item *item)
552 {
553 	struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
554 				struct se_tpg_np, tpg_np_group);
555 	struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
556 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
557 
558 	tf->tf_ops.fabric_drop_np(se_tpg_np);
559 }
560 
561 static struct configfs_item_operations target_fabric_np_base_item_ops = {
562 	.release		= target_fabric_np_base_release,
563 	.show_attribute		= target_fabric_np_base_attr_show,
564 	.store_attribute	= target_fabric_np_base_attr_store,
565 };
566 
567 TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL);
568 
569 /* End of tfc_tpg_np_base_cit */
570 
571 /* Start of tfc_tpg_np_cit */
572 
573 static struct config_group *target_fabric_make_np(
574 	struct config_group *group,
575 	const char *name)
576 {
577 	struct se_portal_group *se_tpg = container_of(group,
578 				struct se_portal_group, tpg_np_group);
579 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
580 	struct se_tpg_np *se_tpg_np;
581 
582 	if (!tf->tf_ops.fabric_make_np) {
583 		pr_err("tf->tf_ops.fabric_make_np is NULL\n");
584 		return ERR_PTR(-ENOSYS);
585 	}
586 
587 	se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name);
588 	if (!se_tpg_np || IS_ERR(se_tpg_np))
589 		return ERR_PTR(-EINVAL);
590 
591 	se_tpg_np->tpg_np_parent = se_tpg;
592 	config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
593 			&TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
594 
595 	return &se_tpg_np->tpg_np_group;
596 }
597 
598 static void target_fabric_drop_np(
599 	struct config_group *group,
600 	struct config_item *item)
601 {
602 	/*
603 	 * struct se_tpg_np is released via target_fabric_np_base_release()
604 	 */
605 	config_item_put(item);
606 }
607 
608 static struct configfs_group_operations target_fabric_np_group_ops = {
609 	.make_group	= &target_fabric_make_np,
610 	.drop_item	= &target_fabric_drop_np,
611 };
612 
613 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
614 
615 /* End of tfc_tpg_np_cit */
616 
617 /* Start of tfc_tpg_port_cit */
618 
619 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
620 #define TCM_PORT_ATTR(_name, _mode)					\
621 static struct target_fabric_port_attribute target_fabric_port_##_name =	\
622 	__CONFIGFS_EATTR(_name, _mode,					\
623 	target_fabric_port_show_attr_##_name,				\
624 	target_fabric_port_store_attr_##_name);
625 
626 #define TCM_PORT_ATTOR_RO(_name)					\
627 	__CONFIGFS_EATTR_RO(_name,					\
628 	target_fabric_port_show_attr_##_name);
629 
630 /*
631  * alua_tg_pt_gp
632  */
633 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
634 	struct se_lun *lun,
635 	char *page)
636 {
637 	if (!lun || !lun->lun_sep)
638 		return -ENODEV;
639 
640 	return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
641 }
642 
643 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
644 	struct se_lun *lun,
645 	const char *page,
646 	size_t count)
647 {
648 	if (!lun || !lun->lun_sep)
649 		return -ENODEV;
650 
651 	return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
652 }
653 
654 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
655 
656 /*
657  * alua_tg_pt_offline
658  */
659 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
660 	struct se_lun *lun,
661 	char *page)
662 {
663 	if (!lun || !lun->lun_sep)
664 		return -ENODEV;
665 
666 	return core_alua_show_offline_bit(lun, page);
667 }
668 
669 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
670 	struct se_lun *lun,
671 	const char *page,
672 	size_t count)
673 {
674 	if (!lun || !lun->lun_sep)
675 		return -ENODEV;
676 
677 	return core_alua_store_offline_bit(lun, page, count);
678 }
679 
680 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
681 
682 /*
683  * alua_tg_pt_status
684  */
685 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
686 	struct se_lun *lun,
687 	char *page)
688 {
689 	if (!lun || !lun->lun_sep)
690 		return -ENODEV;
691 
692 	return core_alua_show_secondary_status(lun, page);
693 }
694 
695 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
696 	struct se_lun *lun,
697 	const char *page,
698 	size_t count)
699 {
700 	if (!lun || !lun->lun_sep)
701 		return -ENODEV;
702 
703 	return core_alua_store_secondary_status(lun, page, count);
704 }
705 
706 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
707 
708 /*
709  * alua_tg_pt_write_md
710  */
711 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
712 	struct se_lun *lun,
713 	char *page)
714 {
715 	if (!lun || !lun->lun_sep)
716 		return -ENODEV;
717 
718 	return core_alua_show_secondary_write_metadata(lun, page);
719 }
720 
721 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
722 	struct se_lun *lun,
723 	const char *page,
724 	size_t count)
725 {
726 	if (!lun || !lun->lun_sep)
727 		return -ENODEV;
728 
729 	return core_alua_store_secondary_write_metadata(lun, page, count);
730 }
731 
732 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
733 
734 
735 static struct configfs_attribute *target_fabric_port_attrs[] = {
736 	&target_fabric_port_alua_tg_pt_gp.attr,
737 	&target_fabric_port_alua_tg_pt_offline.attr,
738 	&target_fabric_port_alua_tg_pt_status.attr,
739 	&target_fabric_port_alua_tg_pt_write_md.attr,
740 	NULL,
741 };
742 
743 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
744 
745 static int target_fabric_port_link(
746 	struct config_item *lun_ci,
747 	struct config_item *se_dev_ci)
748 {
749 	struct config_item *tpg_ci;
750 	struct se_lun *lun = container_of(to_config_group(lun_ci),
751 				struct se_lun, lun_group);
752 	struct se_lun *lun_p;
753 	struct se_portal_group *se_tpg;
754 	struct se_device *dev =
755 		container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
756 	struct target_fabric_configfs *tf;
757 	int ret;
758 
759 	if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
760 		pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
761 			" %p to struct se_device: %p\n", se_dev_ci, dev);
762 		return -EFAULT;
763 	}
764 
765 	if (!(dev->dev_flags & DF_CONFIGURED)) {
766 		pr_err("se_device not configured yet, cannot port link\n");
767 		return -ENODEV;
768 	}
769 
770 	tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
771 	se_tpg = container_of(to_config_group(tpg_ci),
772 				struct se_portal_group, tpg_group);
773 	tf = se_tpg->se_tpg_wwn->wwn_tf;
774 
775 	if (lun->lun_se_dev !=  NULL) {
776 		pr_err("Port Symlink already exists\n");
777 		return -EEXIST;
778 	}
779 
780 	lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun);
781 	if (IS_ERR(lun_p)) {
782 		pr_err("core_dev_add_lun() failed\n");
783 		ret = PTR_ERR(lun_p);
784 		goto out;
785 	}
786 
787 	if (tf->tf_ops.fabric_post_link) {
788 		/*
789 		 * Call the optional fabric_post_link() to allow a
790 		 * fabric module to setup any additional state once
791 		 * core_dev_add_lun() has been called..
792 		 */
793 		tf->tf_ops.fabric_post_link(se_tpg, lun);
794 	}
795 
796 	return 0;
797 out:
798 	return ret;
799 }
800 
801 static int target_fabric_port_unlink(
802 	struct config_item *lun_ci,
803 	struct config_item *se_dev_ci)
804 {
805 	struct se_lun *lun = container_of(to_config_group(lun_ci),
806 				struct se_lun, lun_group);
807 	struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
808 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
809 
810 	if (tf->tf_ops.fabric_pre_unlink) {
811 		/*
812 		 * Call the optional fabric_pre_unlink() to allow a
813 		 * fabric module to release any additional stat before
814 		 * core_dev_del_lun() is called.
815 		*/
816 		tf->tf_ops.fabric_pre_unlink(se_tpg, lun);
817 	}
818 
819 	core_dev_del_lun(se_tpg, lun->unpacked_lun);
820 	return 0;
821 }
822 
823 static struct configfs_item_operations target_fabric_port_item_ops = {
824 	.show_attribute		= target_fabric_port_attr_show,
825 	.store_attribute	= target_fabric_port_attr_store,
826 	.allow_link		= target_fabric_port_link,
827 	.drop_link		= target_fabric_port_unlink,
828 };
829 
830 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
831 
832 /* End of tfc_tpg_port_cit */
833 
834 /* Start of tfc_tpg_port_stat_cit */
835 
836 static struct config_group *target_core_port_stat_mkdir(
837 	struct config_group *group,
838 	const char *name)
839 {
840 	return ERR_PTR(-ENOSYS);
841 }
842 
843 static void target_core_port_stat_rmdir(
844 	struct config_group *group,
845 	struct config_item *item)
846 {
847 	return;
848 }
849 
850 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
851 	.make_group		= target_core_port_stat_mkdir,
852 	.drop_item		= target_core_port_stat_rmdir,
853 };
854 
855 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
856 
857 /* End of tfc_tpg_port_stat_cit */
858 
859 /* Start of tfc_tpg_lun_cit */
860 
861 static struct config_group *target_fabric_make_lun(
862 	struct config_group *group,
863 	const char *name)
864 {
865 	struct se_lun *lun;
866 	struct se_portal_group *se_tpg = container_of(group,
867 			struct se_portal_group, tpg_lun_group);
868 	struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
869 	struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
870 	unsigned long unpacked_lun;
871 	int errno;
872 
873 	if (strstr(name, "lun_") != name) {
874 		pr_err("Unable to locate \'_\" in"
875 				" \"lun_$LUN_NUMBER\"\n");
876 		return ERR_PTR(-EINVAL);
877 	}
878 	if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX)
879 		return ERR_PTR(-EINVAL);
880 
881 	lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
882 	if (!lun)
883 		return ERR_PTR(-EINVAL);
884 
885 	lun_cg = &lun->lun_group;
886 	lun_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
887 				GFP_KERNEL);
888 	if (!lun_cg->default_groups) {
889 		pr_err("Unable to allocate lun_cg->default_groups\n");
890 		return ERR_PTR(-ENOMEM);
891 	}
892 
893 	config_group_init_type_name(&lun->lun_group, name,
894 			&TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
895 	config_group_init_type_name(&lun->port_stat_grps.stat_group,
896 			"statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
897 	lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
898 	lun_cg->default_groups[1] = NULL;
899 
900 	port_stat_grp = &lun->port_stat_grps.stat_group;
901 	port_stat_grp->default_groups =  kzalloc(sizeof(struct config_group) * 3,
902 				GFP_KERNEL);
903 	if (!port_stat_grp->default_groups) {
904 		pr_err("Unable to allocate port_stat_grp->default_groups\n");
905 		errno = -ENOMEM;
906 		goto out;
907 	}
908 	target_stat_setup_port_default_groups(lun);
909 
910 	return &lun->lun_group;
911 out:
912 	if (lun_cg)
913 		kfree(lun_cg->default_groups);
914 	return ERR_PTR(errno);
915 }
916 
917 static void target_fabric_drop_lun(
918 	struct config_group *group,
919 	struct config_item *item)
920 {
921 	struct se_lun *lun = container_of(to_config_group(item),
922 				struct se_lun, lun_group);
923 	struct config_item *df_item;
924 	struct config_group *lun_cg, *port_stat_grp;
925 	int i;
926 
927 	port_stat_grp = &lun->port_stat_grps.stat_group;
928 	for (i = 0; port_stat_grp->default_groups[i]; i++) {
929 		df_item = &port_stat_grp->default_groups[i]->cg_item;
930 		port_stat_grp->default_groups[i] = NULL;
931 		config_item_put(df_item);
932 	}
933 	kfree(port_stat_grp->default_groups);
934 
935 	lun_cg = &lun->lun_group;
936 	for (i = 0; lun_cg->default_groups[i]; i++) {
937 		df_item = &lun_cg->default_groups[i]->cg_item;
938 		lun_cg->default_groups[i] = NULL;
939 		config_item_put(df_item);
940 	}
941 	kfree(lun_cg->default_groups);
942 
943 	config_item_put(item);
944 }
945 
946 static struct configfs_group_operations target_fabric_lun_group_ops = {
947 	.make_group	= &target_fabric_make_lun,
948 	.drop_item	= &target_fabric_drop_lun,
949 };
950 
951 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
952 
953 /* End of tfc_tpg_lun_cit */
954 
955 /* Start of tfc_tpg_attrib_cit */
956 
957 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
958 
959 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
960 	.show_attribute		= target_fabric_tpg_attrib_attr_show,
961 	.store_attribute	= target_fabric_tpg_attrib_attr_store,
962 };
963 
964 TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
965 
966 /* End of tfc_tpg_attrib_cit */
967 
968 /* Start of tfc_tpg_param_cit */
969 
970 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
971 
972 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
973 	.show_attribute		= target_fabric_tpg_param_attr_show,
974 	.store_attribute	= target_fabric_tpg_param_attr_store,
975 };
976 
977 TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL);
978 
979 /* End of tfc_tpg_param_cit */
980 
981 /* Start of tfc_tpg_base_cit */
982 /*
983  * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
984  */
985 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
986 
987 static void target_fabric_tpg_release(struct config_item *item)
988 {
989 	struct se_portal_group *se_tpg = container_of(to_config_group(item),
990 			struct se_portal_group, tpg_group);
991 	struct se_wwn *wwn = se_tpg->se_tpg_wwn;
992 	struct target_fabric_configfs *tf = wwn->wwn_tf;
993 
994 	tf->tf_ops.fabric_drop_tpg(se_tpg);
995 }
996 
997 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
998 	.release		= target_fabric_tpg_release,
999 	.show_attribute		= target_fabric_tpg_attr_show,
1000 	.store_attribute	= target_fabric_tpg_attr_store,
1001 };
1002 
1003 TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL);
1004 
1005 /* End of tfc_tpg_base_cit */
1006 
1007 /* Start of tfc_tpg_cit */
1008 
1009 static struct config_group *target_fabric_make_tpg(
1010 	struct config_group *group,
1011 	const char *name)
1012 {
1013 	struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1014 	struct target_fabric_configfs *tf = wwn->wwn_tf;
1015 	struct se_portal_group *se_tpg;
1016 
1017 	if (!tf->tf_ops.fabric_make_tpg) {
1018 		pr_err("tf->tf_ops.fabric_make_tpg is NULL\n");
1019 		return ERR_PTR(-ENOSYS);
1020 	}
1021 
1022 	se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name);
1023 	if (!se_tpg || IS_ERR(se_tpg))
1024 		return ERR_PTR(-EINVAL);
1025 	/*
1026 	 * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1027 	 */
1028 	se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1029 	se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1030 	se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1031 	se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1032 	se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1033 	se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
1034 	se_tpg->tpg_group.default_groups[5] = NULL;
1035 
1036 	config_group_init_type_name(&se_tpg->tpg_group, name,
1037 			&TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
1038 	config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1039 			&TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
1040 	config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1041 			&TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
1042 	config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1043 			&TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
1044 	config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1045 			&TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
1046 	config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1047 			&TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
1048 
1049 	return &se_tpg->tpg_group;
1050 }
1051 
1052 static void target_fabric_drop_tpg(
1053 	struct config_group *group,
1054 	struct config_item *item)
1055 {
1056 	struct se_portal_group *se_tpg = container_of(to_config_group(item),
1057 				struct se_portal_group, tpg_group);
1058 	struct config_group *tpg_cg = &se_tpg->tpg_group;
1059 	struct config_item *df_item;
1060 	int i;
1061 	/*
1062 	 * Release default groups, but do not release tpg_cg->default_groups
1063 	 * memory as it is statically allocated at se_tpg->tpg_default_groups.
1064 	 */
1065 	for (i = 0; tpg_cg->default_groups[i]; i++) {
1066 		df_item = &tpg_cg->default_groups[i]->cg_item;
1067 		tpg_cg->default_groups[i] = NULL;
1068 		config_item_put(df_item);
1069 	}
1070 
1071 	config_item_put(item);
1072 }
1073 
1074 static void target_fabric_release_wwn(struct config_item *item)
1075 {
1076 	struct se_wwn *wwn = container_of(to_config_group(item),
1077 				struct se_wwn, wwn_group);
1078 	struct target_fabric_configfs *tf = wwn->wwn_tf;
1079 
1080 	tf->tf_ops.fabric_drop_wwn(wwn);
1081 }
1082 
1083 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1084 	.release	= target_fabric_release_wwn,
1085 };
1086 
1087 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1088 	.make_group	= target_fabric_make_tpg,
1089 	.drop_item	= target_fabric_drop_tpg,
1090 };
1091 
1092 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1093 		NULL);
1094 
1095 /* End of tfc_tpg_cit */
1096 
1097 /* Start of tfc_wwn_fabric_stats_cit */
1098 /*
1099  * This is used as a placeholder for struct se_wwn->fabric_stat_group
1100  * to allow fabrics access to ->fabric_stat_group->default_groups[]
1101  */
1102 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1103 
1104 /* End of tfc_wwn_fabric_stats_cit */
1105 
1106 /* Start of tfc_wwn_cit */
1107 
1108 static struct config_group *target_fabric_make_wwn(
1109 	struct config_group *group,
1110 	const char *name)
1111 {
1112 	struct target_fabric_configfs *tf = container_of(group,
1113 				struct target_fabric_configfs, tf_group);
1114 	struct se_wwn *wwn;
1115 
1116 	if (!tf->tf_ops.fabric_make_wwn) {
1117 		pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1118 		return ERR_PTR(-ENOSYS);
1119 	}
1120 
1121 	wwn = tf->tf_ops.fabric_make_wwn(tf, group, name);
1122 	if (!wwn || IS_ERR(wwn))
1123 		return ERR_PTR(-EINVAL);
1124 
1125 	wwn->wwn_tf = tf;
1126 	/*
1127 	 * Setup default groups from pre-allocated wwn->wwn_default_groups
1128 	 */
1129 	wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1130 	wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1131 	wwn->wwn_group.default_groups[1] = NULL;
1132 
1133 	config_group_init_type_name(&wwn->wwn_group, name,
1134 			&TF_CIT_TMPL(tf)->tfc_tpg_cit);
1135 	config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1136 			&TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
1137 
1138 	return &wwn->wwn_group;
1139 }
1140 
1141 static void target_fabric_drop_wwn(
1142 	struct config_group *group,
1143 	struct config_item *item)
1144 {
1145 	struct se_wwn *wwn = container_of(to_config_group(item),
1146 				struct se_wwn, wwn_group);
1147 	struct config_item *df_item;
1148 	struct config_group *cg = &wwn->wwn_group;
1149 	int i;
1150 
1151 	for (i = 0; cg->default_groups[i]; i++) {
1152 		df_item = &cg->default_groups[i]->cg_item;
1153 		cg->default_groups[i] = NULL;
1154 		config_item_put(df_item);
1155 	}
1156 
1157 	config_item_put(item);
1158 }
1159 
1160 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1161 	.make_group	= target_fabric_make_wwn,
1162 	.drop_item	= target_fabric_drop_wwn,
1163 };
1164 /*
1165  * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1166  */
1167 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1168 
1169 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1170 	.show_attribute		= target_fabric_wwn_attr_show,
1171 	.store_attribute	= target_fabric_wwn_attr_store,
1172 };
1173 
1174 TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL);
1175 
1176 /* End of tfc_wwn_cit */
1177 
1178 /* Start of tfc_discovery_cit */
1179 
1180 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1181 		tf_disc_group);
1182 
1183 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1184 	.show_attribute		= target_fabric_discovery_attr_show,
1185 	.store_attribute	= target_fabric_discovery_attr_store,
1186 };
1187 
1188 TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL);
1189 
1190 /* End of tfc_discovery_cit */
1191 
1192 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1193 {
1194 	target_fabric_setup_discovery_cit(tf);
1195 	target_fabric_setup_wwn_cit(tf);
1196 	target_fabric_setup_wwn_fabric_stats_cit(tf);
1197 	target_fabric_setup_tpg_cit(tf);
1198 	target_fabric_setup_tpg_base_cit(tf);
1199 	target_fabric_setup_tpg_port_cit(tf);
1200 	target_fabric_setup_tpg_port_stat_cit(tf);
1201 	target_fabric_setup_tpg_lun_cit(tf);
1202 	target_fabric_setup_tpg_np_cit(tf);
1203 	target_fabric_setup_tpg_np_base_cit(tf);
1204 	target_fabric_setup_tpg_attrib_cit(tf);
1205 	target_fabric_setup_tpg_param_cit(tf);
1206 	target_fabric_setup_tpg_nacl_cit(tf);
1207 	target_fabric_setup_tpg_nacl_base_cit(tf);
1208 	target_fabric_setup_tpg_nacl_attrib_cit(tf);
1209 	target_fabric_setup_tpg_nacl_auth_cit(tf);
1210 	target_fabric_setup_tpg_nacl_param_cit(tf);
1211 	target_fabric_setup_tpg_nacl_stat_cit(tf);
1212 	target_fabric_setup_tpg_mappedlun_cit(tf);
1213 	target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1214 
1215 	return 0;
1216 }
1217