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 * Copyright (c) 2010,2011 Rising Tide Systems
8 * Copyright (c) 2010,2011 Linux-iSCSI.org
9 *
10 * Copyright (c) Nicholas A. Bellinger <nab@linux-iscsi.org>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 ****************************************************************************/
22
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <generated/utsrelease.h>
26 #include <linux/utsname.h>
27 #include <linux/init.h>
28 #include <linux/fs.h>
29 #include <linux/namei.h>
30 #include <linux/slab.h>
31 #include <linux/types.h>
32 #include <linux/delay.h>
33 #include <linux/unistd.h>
34 #include <linux/string.h>
35 #include <linux/syscalls.h>
36 #include <linux/configfs.h>
37
38 #include <target/target_core_base.h>
39 #include <target/target_core_fabric.h>
40 #include <target/target_core_fabric_configfs.h>
41 #include <target/target_core_configfs.h>
42 #include <target/configfs_macros.h>
43
44 #include "target_core_internal.h"
45 #include "target_core_alua.h"
46 #include "target_core_pr.h"
47
48 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
49 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
50 { \
51 struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \
52 struct config_item_type *cit = &tfc->tfc_##_name##_cit; \
53 \
54 cit->ct_item_ops = _item_ops; \
55 cit->ct_group_ops = _group_ops; \
56 cit->ct_attrs = _attrs; \
57 cit->ct_owner = tf->tf_module; \
58 pr_debug("Setup generic %s\n", __stringify(_name)); \
59 }
60
61 /* Start of tfc_tpg_mappedlun_cit */
62
target_fabric_mappedlun_link(struct config_item * lun_acl_ci,struct config_item * lun_ci)63 static int target_fabric_mappedlun_link(
64 struct config_item *lun_acl_ci,
65 struct config_item *lun_ci)
66 {
67 struct se_dev_entry *deve;
68 struct se_lun *lun = container_of(to_config_group(lun_ci),
69 struct se_lun, lun_group);
70 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
71 struct se_lun_acl, se_lun_group);
72 struct se_portal_group *se_tpg;
73 struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
74 int ret = 0, lun_access;
75
76 if (lun->lun_link_magic != SE_LUN_LINK_MAGIC) {
77 pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
78 " %p to struct lun: %p\n", lun_ci, lun);
79 return -EFAULT;
80 }
81 /*
82 * Ensure that the source port exists
83 */
84 if (!lun->lun_sep || !lun->lun_sep->sep_tpg) {
85 pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
86 "_tpg does not exist\n");
87 return -EINVAL;
88 }
89 se_tpg = lun->lun_sep->sep_tpg;
90
91 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
92 tpg_ci = &nacl_ci->ci_group->cg_item;
93 wwn_ci = &tpg_ci->ci_group->cg_item;
94 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
95 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
96 /*
97 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
98 */
99 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
100 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
101 config_item_name(wwn_ci));
102 return -EINVAL;
103 }
104 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
105 pr_err("Illegal Initiator ACL Symlink outside of %s"
106 " TPGT: %s\n", config_item_name(wwn_ci),
107 config_item_name(tpg_ci));
108 return -EINVAL;
109 }
110 /*
111 * If this struct se_node_acl was dynamically generated with
112 * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
113 * which be will write protected (READ-ONLY) when
114 * tpg_1/attrib/demo_mode_write_protect=1
115 */
116 spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
117 deve = lacl->se_lun_nacl->device_list[lacl->mapped_lun];
118 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
119 lun_access = deve->lun_flags;
120 else
121 lun_access =
122 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
123 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
124 TRANSPORT_LUNFLAGS_READ_WRITE;
125 spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
126 /*
127 * Determine the actual mapped LUN value user wants..
128 *
129 * This value is what the SCSI Initiator actually sees the
130 * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
131 */
132 ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
133 lun->unpacked_lun, lun_access);
134
135 return (ret < 0) ? -EINVAL : 0;
136 }
137
target_fabric_mappedlun_unlink(struct config_item * lun_acl_ci,struct config_item * lun_ci)138 static int target_fabric_mappedlun_unlink(
139 struct config_item *lun_acl_ci,
140 struct config_item *lun_ci)
141 {
142 struct se_lun *lun;
143 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
144 struct se_lun_acl, se_lun_group);
145 struct se_node_acl *nacl = lacl->se_lun_nacl;
146 struct se_dev_entry *deve = nacl->device_list[lacl->mapped_lun];
147 struct se_portal_group *se_tpg;
148 /*
149 * Determine if the underlying MappedLUN has already been released..
150 */
151 if (!deve->se_lun)
152 return 0;
153
154 lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
155 se_tpg = lun->lun_sep->sep_tpg;
156
157 core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
158 return 0;
159 }
160
161 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
162 #define TCM_MAPPEDLUN_ATTR(_name, _mode) \
163 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
164 __CONFIGFS_EATTR(_name, _mode, \
165 target_fabric_mappedlun_show_##_name, \
166 target_fabric_mappedlun_store_##_name);
167
target_fabric_mappedlun_show_write_protect(struct se_lun_acl * lacl,char * page)168 static ssize_t target_fabric_mappedlun_show_write_protect(
169 struct se_lun_acl *lacl,
170 char *page)
171 {
172 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
173 struct se_dev_entry *deve;
174 ssize_t len;
175
176 spin_lock_irq(&se_nacl->device_list_lock);
177 deve = se_nacl->device_list[lacl->mapped_lun];
178 len = sprintf(page, "%d\n",
179 (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
180 1 : 0);
181 spin_unlock_irq(&se_nacl->device_list_lock);
182
183 return len;
184 }
185
target_fabric_mappedlun_store_write_protect(struct se_lun_acl * lacl,const char * page,size_t count)186 static ssize_t target_fabric_mappedlun_store_write_protect(
187 struct se_lun_acl *lacl,
188 const char *page,
189 size_t count)
190 {
191 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
192 struct se_portal_group *se_tpg = se_nacl->se_tpg;
193 unsigned long op;
194
195 if (strict_strtoul(page, 0, &op))
196 return -EINVAL;
197
198 if ((op != 1) && (op != 0))
199 return -EINVAL;
200
201 core_update_device_list_access(lacl->mapped_lun, (op) ?
202 TRANSPORT_LUNFLAGS_READ_ONLY :
203 TRANSPORT_LUNFLAGS_READ_WRITE,
204 lacl->se_lun_nacl);
205
206 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
207 " Mapped LUN: %u Write Protect bit to %s\n",
208 se_tpg->se_tpg_tfo->get_fabric_name(),
209 lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
210
211 return count;
212
213 }
214
215 TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
216
217 CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
218
target_fabric_mappedlun_release(struct config_item * item)219 static void target_fabric_mappedlun_release(struct config_item *item)
220 {
221 struct se_lun_acl *lacl = container_of(to_config_group(item),
222 struct se_lun_acl, se_lun_group);
223 struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
224
225 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
226 }
227
228 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
229 &target_fabric_mappedlun_write_protect.attr,
230 NULL,
231 };
232
233 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
234 .release = target_fabric_mappedlun_release,
235 .show_attribute = target_fabric_mappedlun_attr_show,
236 .store_attribute = target_fabric_mappedlun_attr_store,
237 .allow_link = target_fabric_mappedlun_link,
238 .drop_link = target_fabric_mappedlun_unlink,
239 };
240
241 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
242 target_fabric_mappedlun_attrs);
243
244 /* End of tfc_tpg_mappedlun_cit */
245
246 /* Start of tfc_tpg_mappedlun_port_cit */
247
target_core_mappedlun_stat_mkdir(struct config_group * group,const char * name)248 static struct config_group *target_core_mappedlun_stat_mkdir(
249 struct config_group *group,
250 const char *name)
251 {
252 return ERR_PTR(-ENOSYS);
253 }
254
target_core_mappedlun_stat_rmdir(struct config_group * group,struct config_item * item)255 static void target_core_mappedlun_stat_rmdir(
256 struct config_group *group,
257 struct config_item *item)
258 {
259 return;
260 }
261
262 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
263 .make_group = target_core_mappedlun_stat_mkdir,
264 .drop_item = target_core_mappedlun_stat_rmdir,
265 };
266
267 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
268 NULL);
269
270 /* End of tfc_tpg_mappedlun_port_cit */
271
272 /* Start of tfc_tpg_nacl_attrib_cit */
273
274 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
275
276 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
277 .show_attribute = target_fabric_nacl_attrib_attr_show,
278 .store_attribute = target_fabric_nacl_attrib_attr_store,
279 };
280
281 TF_CIT_SETUP(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, NULL);
282
283 /* End of tfc_tpg_nacl_attrib_cit */
284
285 /* Start of tfc_tpg_nacl_auth_cit */
286
287 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
288
289 static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
290 .show_attribute = target_fabric_nacl_auth_attr_show,
291 .store_attribute = target_fabric_nacl_auth_attr_store,
292 };
293
294 TF_CIT_SETUP(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, NULL);
295
296 /* End of tfc_tpg_nacl_auth_cit */
297
298 /* Start of tfc_tpg_nacl_param_cit */
299
300 CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
301
302 static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
303 .show_attribute = target_fabric_nacl_param_attr_show,
304 .store_attribute = target_fabric_nacl_param_attr_store,
305 };
306
307 TF_CIT_SETUP(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, NULL);
308
309 /* End of tfc_tpg_nacl_param_cit */
310
311 /* Start of tfc_tpg_nacl_base_cit */
312
313 CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
314
target_fabric_make_mappedlun(struct config_group * group,const char * name)315 static struct config_group *target_fabric_make_mappedlun(
316 struct config_group *group,
317 const char *name)
318 {
319 struct se_node_acl *se_nacl = container_of(group,
320 struct se_node_acl, acl_group);
321 struct se_portal_group *se_tpg = se_nacl->se_tpg;
322 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
323 struct se_lun_acl *lacl;
324 struct config_item *acl_ci;
325 struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
326 char *buf;
327 unsigned long mapped_lun;
328 int ret = 0;
329
330 acl_ci = &group->cg_item;
331 if (!acl_ci) {
332 pr_err("Unable to locatel acl_ci\n");
333 return NULL;
334 }
335
336 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
337 if (!buf) {
338 pr_err("Unable to allocate memory for name buf\n");
339 return ERR_PTR(-ENOMEM);
340 }
341 snprintf(buf, strlen(name) + 1, "%s", name);
342 /*
343 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
344 */
345 if (strstr(buf, "lun_") != buf) {
346 pr_err("Unable to locate \"lun_\" from buf: %s"
347 " name: %s\n", buf, name);
348 ret = -EINVAL;
349 goto out;
350 }
351 /*
352 * Determine the Mapped LUN value. This is what the SCSI Initiator
353 * Port will actually see.
354 */
355 if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) {
356 ret = -EINVAL;
357 goto out;
358 }
359 if (mapped_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
360 pr_err("Mapped LUN: %lu exceeds TRANSPORT_MAX_LUNS_PER_TPG"
361 "-1: %u for Target Portal Group: %u\n", mapped_lun,
362 TRANSPORT_MAX_LUNS_PER_TPG-1,
363 se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
364 ret = -EINVAL;
365 goto out;
366 }
367
368 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
369 mapped_lun, &ret);
370 if (!lacl) {
371 ret = -EINVAL;
372 goto out;
373 }
374
375 lacl_cg = &lacl->se_lun_group;
376 lacl_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
377 GFP_KERNEL);
378 if (!lacl_cg->default_groups) {
379 pr_err("Unable to allocate lacl_cg->default_groups\n");
380 ret = -ENOMEM;
381 goto out;
382 }
383
384 config_group_init_type_name(&lacl->se_lun_group, name,
385 &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
386 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
387 "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
388 lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
389 lacl_cg->default_groups[1] = NULL;
390
391 ml_stat_grp = &lacl->ml_stat_grps.stat_group;
392 ml_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
393 GFP_KERNEL);
394 if (!ml_stat_grp->default_groups) {
395 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
396 ret = -ENOMEM;
397 goto out;
398 }
399 target_stat_setup_mappedlun_default_groups(lacl);
400
401 kfree(buf);
402 return &lacl->se_lun_group;
403 out:
404 if (lacl_cg)
405 kfree(lacl_cg->default_groups);
406 kfree(buf);
407 return ERR_PTR(ret);
408 }
409
target_fabric_drop_mappedlun(struct config_group * group,struct config_item * item)410 static void target_fabric_drop_mappedlun(
411 struct config_group *group,
412 struct config_item *item)
413 {
414 struct se_lun_acl *lacl = container_of(to_config_group(item),
415 struct se_lun_acl, se_lun_group);
416 struct config_item *df_item;
417 struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
418 int i;
419
420 ml_stat_grp = &lacl->ml_stat_grps.stat_group;
421 for (i = 0; ml_stat_grp->default_groups[i]; i++) {
422 df_item = &ml_stat_grp->default_groups[i]->cg_item;
423 ml_stat_grp->default_groups[i] = NULL;
424 config_item_put(df_item);
425 }
426 kfree(ml_stat_grp->default_groups);
427
428 lacl_cg = &lacl->se_lun_group;
429 for (i = 0; lacl_cg->default_groups[i]; i++) {
430 df_item = &lacl_cg->default_groups[i]->cg_item;
431 lacl_cg->default_groups[i] = NULL;
432 config_item_put(df_item);
433 }
434 kfree(lacl_cg->default_groups);
435
436 config_item_put(item);
437 }
438
target_fabric_nacl_base_release(struct config_item * item)439 static void target_fabric_nacl_base_release(struct config_item *item)
440 {
441 struct se_node_acl *se_nacl = container_of(to_config_group(item),
442 struct se_node_acl, acl_group);
443 struct se_portal_group *se_tpg = se_nacl->se_tpg;
444 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
445
446 tf->tf_ops.fabric_drop_nodeacl(se_nacl);
447 }
448
449 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
450 .release = target_fabric_nacl_base_release,
451 .show_attribute = target_fabric_nacl_base_attr_show,
452 .store_attribute = target_fabric_nacl_base_attr_store,
453 };
454
455 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
456 .make_group = target_fabric_make_mappedlun,
457 .drop_item = target_fabric_drop_mappedlun,
458 };
459
460 TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
461 &target_fabric_nacl_base_group_ops, NULL);
462
463 /* End of tfc_tpg_nacl_base_cit */
464
465 /* Start of tfc_node_fabric_stats_cit */
466 /*
467 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
468 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
469 */
470 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
471
472 /* End of tfc_wwn_fabric_stats_cit */
473
474 /* Start of tfc_tpg_nacl_cit */
475
target_fabric_make_nodeacl(struct config_group * group,const char * name)476 static struct config_group *target_fabric_make_nodeacl(
477 struct config_group *group,
478 const char *name)
479 {
480 struct se_portal_group *se_tpg = container_of(group,
481 struct se_portal_group, tpg_acl_group);
482 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
483 struct se_node_acl *se_nacl;
484 struct config_group *nacl_cg;
485
486 if (!tf->tf_ops.fabric_make_nodeacl) {
487 pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n");
488 return ERR_PTR(-ENOSYS);
489 }
490
491 se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name);
492 if (IS_ERR(se_nacl))
493 return ERR_CAST(se_nacl);
494
495 nacl_cg = &se_nacl->acl_group;
496 nacl_cg->default_groups = se_nacl->acl_default_groups;
497 nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
498 nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
499 nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
500 nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
501 nacl_cg->default_groups[4] = NULL;
502
503 config_group_init_type_name(&se_nacl->acl_group, name,
504 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
505 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
506 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
507 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
508 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
509 config_group_init_type_name(&se_nacl->acl_param_group, "param",
510 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
511 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
512 "fabric_statistics",
513 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
514
515 return &se_nacl->acl_group;
516 }
517
target_fabric_drop_nodeacl(struct config_group * group,struct config_item * item)518 static void target_fabric_drop_nodeacl(
519 struct config_group *group,
520 struct config_item *item)
521 {
522 struct se_node_acl *se_nacl = container_of(to_config_group(item),
523 struct se_node_acl, acl_group);
524 struct config_item *df_item;
525 struct config_group *nacl_cg;
526 int i;
527
528 nacl_cg = &se_nacl->acl_group;
529 for (i = 0; nacl_cg->default_groups[i]; i++) {
530 df_item = &nacl_cg->default_groups[i]->cg_item;
531 nacl_cg->default_groups[i] = NULL;
532 config_item_put(df_item);
533 }
534 /*
535 * struct se_node_acl free is done in target_fabric_nacl_base_release()
536 */
537 config_item_put(item);
538 }
539
540 static struct configfs_group_operations target_fabric_nacl_group_ops = {
541 .make_group = target_fabric_make_nodeacl,
542 .drop_item = target_fabric_drop_nodeacl,
543 };
544
545 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
546
547 /* End of tfc_tpg_nacl_cit */
548
549 /* Start of tfc_tpg_np_base_cit */
550
551 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
552
target_fabric_np_base_release(struct config_item * item)553 static void target_fabric_np_base_release(struct config_item *item)
554 {
555 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
556 struct se_tpg_np, tpg_np_group);
557 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
558 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
559
560 tf->tf_ops.fabric_drop_np(se_tpg_np);
561 }
562
563 static struct configfs_item_operations target_fabric_np_base_item_ops = {
564 .release = target_fabric_np_base_release,
565 .show_attribute = target_fabric_np_base_attr_show,
566 .store_attribute = target_fabric_np_base_attr_store,
567 };
568
569 TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL);
570
571 /* End of tfc_tpg_np_base_cit */
572
573 /* Start of tfc_tpg_np_cit */
574
target_fabric_make_np(struct config_group * group,const char * name)575 static struct config_group *target_fabric_make_np(
576 struct config_group *group,
577 const char *name)
578 {
579 struct se_portal_group *se_tpg = container_of(group,
580 struct se_portal_group, tpg_np_group);
581 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
582 struct se_tpg_np *se_tpg_np;
583
584 if (!tf->tf_ops.fabric_make_np) {
585 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
586 return ERR_PTR(-ENOSYS);
587 }
588
589 se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name);
590 if (!se_tpg_np || IS_ERR(se_tpg_np))
591 return ERR_PTR(-EINVAL);
592
593 se_tpg_np->tpg_np_parent = se_tpg;
594 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
595 &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
596
597 return &se_tpg_np->tpg_np_group;
598 }
599
target_fabric_drop_np(struct config_group * group,struct config_item * item)600 static void target_fabric_drop_np(
601 struct config_group *group,
602 struct config_item *item)
603 {
604 /*
605 * struct se_tpg_np is released via target_fabric_np_base_release()
606 */
607 config_item_put(item);
608 }
609
610 static struct configfs_group_operations target_fabric_np_group_ops = {
611 .make_group = &target_fabric_make_np,
612 .drop_item = &target_fabric_drop_np,
613 };
614
615 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
616
617 /* End of tfc_tpg_np_cit */
618
619 /* Start of tfc_tpg_port_cit */
620
621 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
622 #define TCM_PORT_ATTR(_name, _mode) \
623 static struct target_fabric_port_attribute target_fabric_port_##_name = \
624 __CONFIGFS_EATTR(_name, _mode, \
625 target_fabric_port_show_attr_##_name, \
626 target_fabric_port_store_attr_##_name);
627
628 #define TCM_PORT_ATTOR_RO(_name) \
629 __CONFIGFS_EATTR_RO(_name, \
630 target_fabric_port_show_attr_##_name);
631
632 /*
633 * alua_tg_pt_gp
634 */
target_fabric_port_show_attr_alua_tg_pt_gp(struct se_lun * lun,char * page)635 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
636 struct se_lun *lun,
637 char *page)
638 {
639 if (!lun || !lun->lun_sep)
640 return -ENODEV;
641
642 return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
643 }
644
target_fabric_port_store_attr_alua_tg_pt_gp(struct se_lun * lun,const char * page,size_t count)645 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
646 struct se_lun *lun,
647 const char *page,
648 size_t count)
649 {
650 if (!lun || !lun->lun_sep)
651 return -ENODEV;
652
653 return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
654 }
655
656 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
657
658 /*
659 * alua_tg_pt_offline
660 */
target_fabric_port_show_attr_alua_tg_pt_offline(struct se_lun * lun,char * page)661 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
662 struct se_lun *lun,
663 char *page)
664 {
665 if (!lun || !lun->lun_sep)
666 return -ENODEV;
667
668 return core_alua_show_offline_bit(lun, page);
669 }
670
target_fabric_port_store_attr_alua_tg_pt_offline(struct se_lun * lun,const char * page,size_t count)671 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
672 struct se_lun *lun,
673 const char *page,
674 size_t count)
675 {
676 if (!lun || !lun->lun_sep)
677 return -ENODEV;
678
679 return core_alua_store_offline_bit(lun, page, count);
680 }
681
682 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
683
684 /*
685 * alua_tg_pt_status
686 */
target_fabric_port_show_attr_alua_tg_pt_status(struct se_lun * lun,char * page)687 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
688 struct se_lun *lun,
689 char *page)
690 {
691 if (!lun || !lun->lun_sep)
692 return -ENODEV;
693
694 return core_alua_show_secondary_status(lun, page);
695 }
696
target_fabric_port_store_attr_alua_tg_pt_status(struct se_lun * lun,const char * page,size_t count)697 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
698 struct se_lun *lun,
699 const char *page,
700 size_t count)
701 {
702 if (!lun || !lun->lun_sep)
703 return -ENODEV;
704
705 return core_alua_store_secondary_status(lun, page, count);
706 }
707
708 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
709
710 /*
711 * alua_tg_pt_write_md
712 */
target_fabric_port_show_attr_alua_tg_pt_write_md(struct se_lun * lun,char * page)713 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
714 struct se_lun *lun,
715 char *page)
716 {
717 if (!lun || !lun->lun_sep)
718 return -ENODEV;
719
720 return core_alua_show_secondary_write_metadata(lun, page);
721 }
722
target_fabric_port_store_attr_alua_tg_pt_write_md(struct se_lun * lun,const char * page,size_t count)723 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
724 struct se_lun *lun,
725 const char *page,
726 size_t count)
727 {
728 if (!lun || !lun->lun_sep)
729 return -ENODEV;
730
731 return core_alua_store_secondary_write_metadata(lun, page, count);
732 }
733
734 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
735
736
737 static struct configfs_attribute *target_fabric_port_attrs[] = {
738 &target_fabric_port_alua_tg_pt_gp.attr,
739 &target_fabric_port_alua_tg_pt_offline.attr,
740 &target_fabric_port_alua_tg_pt_status.attr,
741 &target_fabric_port_alua_tg_pt_write_md.attr,
742 NULL,
743 };
744
745 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
746
target_fabric_port_link(struct config_item * lun_ci,struct config_item * se_dev_ci)747 static int target_fabric_port_link(
748 struct config_item *lun_ci,
749 struct config_item *se_dev_ci)
750 {
751 struct config_item *tpg_ci;
752 struct se_device *dev;
753 struct se_lun *lun = container_of(to_config_group(lun_ci),
754 struct se_lun, lun_group);
755 struct se_lun *lun_p;
756 struct se_portal_group *se_tpg;
757 struct se_subsystem_dev *se_dev = container_of(
758 to_config_group(se_dev_ci), struct se_subsystem_dev,
759 se_dev_group);
760 struct target_fabric_configfs *tf;
761 int ret;
762
763 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
764 se_tpg = container_of(to_config_group(tpg_ci),
765 struct se_portal_group, tpg_group);
766 tf = se_tpg->se_tpg_wwn->wwn_tf;
767
768 if (lun->lun_se_dev != NULL) {
769 pr_err("Port Symlink already exists\n");
770 return -EEXIST;
771 }
772
773 dev = se_dev->se_dev_ptr;
774 if (!dev) {
775 pr_err("Unable to locate struct se_device pointer from"
776 " %s\n", config_item_name(se_dev_ci));
777 ret = -ENODEV;
778 goto out;
779 }
780 if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
781 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
782 " %p to struct se_device: %p\n", se_dev_ci, dev);
783 return -EFAULT;
784 }
785
786 lun_p = core_dev_add_lun(se_tpg, dev->se_hba, dev,
787 lun->unpacked_lun);
788 if (IS_ERR(lun_p)) {
789 pr_err("core_dev_add_lun() failed\n");
790 ret = PTR_ERR(lun_p);
791 goto out;
792 }
793
794 if (tf->tf_ops.fabric_post_link) {
795 /*
796 * Call the optional fabric_post_link() to allow a
797 * fabric module to setup any additional state once
798 * core_dev_add_lun() has been called..
799 */
800 tf->tf_ops.fabric_post_link(se_tpg, lun);
801 }
802
803 return 0;
804 out:
805 return ret;
806 }
807
target_fabric_port_unlink(struct config_item * lun_ci,struct config_item * se_dev_ci)808 static int target_fabric_port_unlink(
809 struct config_item *lun_ci,
810 struct config_item *se_dev_ci)
811 {
812 struct se_lun *lun = container_of(to_config_group(lun_ci),
813 struct se_lun, lun_group);
814 struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
815 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
816
817 if (tf->tf_ops.fabric_pre_unlink) {
818 /*
819 * Call the optional fabric_pre_unlink() to allow a
820 * fabric module to release any additional stat before
821 * core_dev_del_lun() is called.
822 */
823 tf->tf_ops.fabric_pre_unlink(se_tpg, lun);
824 }
825
826 core_dev_del_lun(se_tpg, lun->unpacked_lun);
827 return 0;
828 }
829
830 static struct configfs_item_operations target_fabric_port_item_ops = {
831 .show_attribute = target_fabric_port_attr_show,
832 .store_attribute = target_fabric_port_attr_store,
833 .allow_link = target_fabric_port_link,
834 .drop_link = target_fabric_port_unlink,
835 };
836
837 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
838
839 /* End of tfc_tpg_port_cit */
840
841 /* Start of tfc_tpg_port_stat_cit */
842
target_core_port_stat_mkdir(struct config_group * group,const char * name)843 static struct config_group *target_core_port_stat_mkdir(
844 struct config_group *group,
845 const char *name)
846 {
847 return ERR_PTR(-ENOSYS);
848 }
849
target_core_port_stat_rmdir(struct config_group * group,struct config_item * item)850 static void target_core_port_stat_rmdir(
851 struct config_group *group,
852 struct config_item *item)
853 {
854 return;
855 }
856
857 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
858 .make_group = target_core_port_stat_mkdir,
859 .drop_item = target_core_port_stat_rmdir,
860 };
861
862 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
863
864 /* End of tfc_tpg_port_stat_cit */
865
866 /* Start of tfc_tpg_lun_cit */
867
target_fabric_make_lun(struct config_group * group,const char * name)868 static struct config_group *target_fabric_make_lun(
869 struct config_group *group,
870 const char *name)
871 {
872 struct se_lun *lun;
873 struct se_portal_group *se_tpg = container_of(group,
874 struct se_portal_group, tpg_lun_group);
875 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
876 struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
877 unsigned long unpacked_lun;
878 int errno;
879
880 if (strstr(name, "lun_") != name) {
881 pr_err("Unable to locate \'_\" in"
882 " \"lun_$LUN_NUMBER\"\n");
883 return ERR_PTR(-EINVAL);
884 }
885 if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX)
886 return ERR_PTR(-EINVAL);
887
888 lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
889 if (!lun)
890 return ERR_PTR(-EINVAL);
891
892 lun_cg = &lun->lun_group;
893 lun_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
894 GFP_KERNEL);
895 if (!lun_cg->default_groups) {
896 pr_err("Unable to allocate lun_cg->default_groups\n");
897 return ERR_PTR(-ENOMEM);
898 }
899
900 config_group_init_type_name(&lun->lun_group, name,
901 &TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
902 config_group_init_type_name(&lun->port_stat_grps.stat_group,
903 "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
904 lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
905 lun_cg->default_groups[1] = NULL;
906
907 port_stat_grp = &lun->port_stat_grps.stat_group;
908 port_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
909 GFP_KERNEL);
910 if (!port_stat_grp->default_groups) {
911 pr_err("Unable to allocate port_stat_grp->default_groups\n");
912 errno = -ENOMEM;
913 goto out;
914 }
915 target_stat_setup_port_default_groups(lun);
916
917 return &lun->lun_group;
918 out:
919 if (lun_cg)
920 kfree(lun_cg->default_groups);
921 return ERR_PTR(errno);
922 }
923
target_fabric_drop_lun(struct config_group * group,struct config_item * item)924 static void target_fabric_drop_lun(
925 struct config_group *group,
926 struct config_item *item)
927 {
928 struct se_lun *lun = container_of(to_config_group(item),
929 struct se_lun, lun_group);
930 struct config_item *df_item;
931 struct config_group *lun_cg, *port_stat_grp;
932 int i;
933
934 port_stat_grp = &lun->port_stat_grps.stat_group;
935 for (i = 0; port_stat_grp->default_groups[i]; i++) {
936 df_item = &port_stat_grp->default_groups[i]->cg_item;
937 port_stat_grp->default_groups[i] = NULL;
938 config_item_put(df_item);
939 }
940 kfree(port_stat_grp->default_groups);
941
942 lun_cg = &lun->lun_group;
943 for (i = 0; lun_cg->default_groups[i]; i++) {
944 df_item = &lun_cg->default_groups[i]->cg_item;
945 lun_cg->default_groups[i] = NULL;
946 config_item_put(df_item);
947 }
948 kfree(lun_cg->default_groups);
949
950 config_item_put(item);
951 }
952
953 static struct configfs_group_operations target_fabric_lun_group_ops = {
954 .make_group = &target_fabric_make_lun,
955 .drop_item = &target_fabric_drop_lun,
956 };
957
958 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
959
960 /* End of tfc_tpg_lun_cit */
961
962 /* Start of tfc_tpg_attrib_cit */
963
964 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
965
966 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
967 .show_attribute = target_fabric_tpg_attrib_attr_show,
968 .store_attribute = target_fabric_tpg_attrib_attr_store,
969 };
970
971 TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
972
973 /* End of tfc_tpg_attrib_cit */
974
975 /* Start of tfc_tpg_param_cit */
976
977 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
978
979 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
980 .show_attribute = target_fabric_tpg_param_attr_show,
981 .store_attribute = target_fabric_tpg_param_attr_store,
982 };
983
984 TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL);
985
986 /* End of tfc_tpg_param_cit */
987
988 /* Start of tfc_tpg_base_cit */
989 /*
990 * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
991 */
992 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
993
target_fabric_tpg_release(struct config_item * item)994 static void target_fabric_tpg_release(struct config_item *item)
995 {
996 struct se_portal_group *se_tpg = container_of(to_config_group(item),
997 struct se_portal_group, tpg_group);
998 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
999 struct target_fabric_configfs *tf = wwn->wwn_tf;
1000
1001 tf->tf_ops.fabric_drop_tpg(se_tpg);
1002 }
1003
1004 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
1005 .release = target_fabric_tpg_release,
1006 .show_attribute = target_fabric_tpg_attr_show,
1007 .store_attribute = target_fabric_tpg_attr_store,
1008 };
1009
1010 TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL);
1011
1012 /* End of tfc_tpg_base_cit */
1013
1014 /* Start of tfc_tpg_cit */
1015
target_fabric_make_tpg(struct config_group * group,const char * name)1016 static struct config_group *target_fabric_make_tpg(
1017 struct config_group *group,
1018 const char *name)
1019 {
1020 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1021 struct target_fabric_configfs *tf = wwn->wwn_tf;
1022 struct se_portal_group *se_tpg;
1023
1024 if (!tf->tf_ops.fabric_make_tpg) {
1025 pr_err("tf->tf_ops.fabric_make_tpg is NULL\n");
1026 return ERR_PTR(-ENOSYS);
1027 }
1028
1029 se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name);
1030 if (!se_tpg || IS_ERR(se_tpg))
1031 return ERR_PTR(-EINVAL);
1032 /*
1033 * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1034 */
1035 se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1036 se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1037 se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1038 se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1039 se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1040 se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
1041 se_tpg->tpg_group.default_groups[5] = NULL;
1042
1043 config_group_init_type_name(&se_tpg->tpg_group, name,
1044 &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
1045 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1046 &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
1047 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1048 &TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
1049 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1050 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
1051 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1052 &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
1053 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1054 &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
1055
1056 return &se_tpg->tpg_group;
1057 }
1058
target_fabric_drop_tpg(struct config_group * group,struct config_item * item)1059 static void target_fabric_drop_tpg(
1060 struct config_group *group,
1061 struct config_item *item)
1062 {
1063 struct se_portal_group *se_tpg = container_of(to_config_group(item),
1064 struct se_portal_group, tpg_group);
1065 struct config_group *tpg_cg = &se_tpg->tpg_group;
1066 struct config_item *df_item;
1067 int i;
1068 /*
1069 * Release default groups, but do not release tpg_cg->default_groups
1070 * memory as it is statically allocated at se_tpg->tpg_default_groups.
1071 */
1072 for (i = 0; tpg_cg->default_groups[i]; i++) {
1073 df_item = &tpg_cg->default_groups[i]->cg_item;
1074 tpg_cg->default_groups[i] = NULL;
1075 config_item_put(df_item);
1076 }
1077
1078 config_item_put(item);
1079 }
1080
target_fabric_release_wwn(struct config_item * item)1081 static void target_fabric_release_wwn(struct config_item *item)
1082 {
1083 struct se_wwn *wwn = container_of(to_config_group(item),
1084 struct se_wwn, wwn_group);
1085 struct target_fabric_configfs *tf = wwn->wwn_tf;
1086
1087 tf->tf_ops.fabric_drop_wwn(wwn);
1088 }
1089
1090 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1091 .release = target_fabric_release_wwn,
1092 };
1093
1094 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1095 .make_group = target_fabric_make_tpg,
1096 .drop_item = target_fabric_drop_tpg,
1097 };
1098
1099 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1100 NULL);
1101
1102 /* End of tfc_tpg_cit */
1103
1104 /* Start of tfc_wwn_fabric_stats_cit */
1105 /*
1106 * This is used as a placeholder for struct se_wwn->fabric_stat_group
1107 * to allow fabrics access to ->fabric_stat_group->default_groups[]
1108 */
1109 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1110
1111 /* End of tfc_wwn_fabric_stats_cit */
1112
1113 /* Start of tfc_wwn_cit */
1114
target_fabric_make_wwn(struct config_group * group,const char * name)1115 static struct config_group *target_fabric_make_wwn(
1116 struct config_group *group,
1117 const char *name)
1118 {
1119 struct target_fabric_configfs *tf = container_of(group,
1120 struct target_fabric_configfs, tf_group);
1121 struct se_wwn *wwn;
1122
1123 if (!tf->tf_ops.fabric_make_wwn) {
1124 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1125 return ERR_PTR(-ENOSYS);
1126 }
1127
1128 wwn = tf->tf_ops.fabric_make_wwn(tf, group, name);
1129 if (!wwn || IS_ERR(wwn))
1130 return ERR_PTR(-EINVAL);
1131
1132 wwn->wwn_tf = tf;
1133 /*
1134 * Setup default groups from pre-allocated wwn->wwn_default_groups
1135 */
1136 wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1137 wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1138 wwn->wwn_group.default_groups[1] = NULL;
1139
1140 config_group_init_type_name(&wwn->wwn_group, name,
1141 &TF_CIT_TMPL(tf)->tfc_tpg_cit);
1142 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1143 &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
1144
1145 return &wwn->wwn_group;
1146 }
1147
target_fabric_drop_wwn(struct config_group * group,struct config_item * item)1148 static void target_fabric_drop_wwn(
1149 struct config_group *group,
1150 struct config_item *item)
1151 {
1152 struct se_wwn *wwn = container_of(to_config_group(item),
1153 struct se_wwn, wwn_group);
1154 struct config_item *df_item;
1155 struct config_group *cg = &wwn->wwn_group;
1156 int i;
1157
1158 for (i = 0; cg->default_groups[i]; i++) {
1159 df_item = &cg->default_groups[i]->cg_item;
1160 cg->default_groups[i] = NULL;
1161 config_item_put(df_item);
1162 }
1163
1164 config_item_put(item);
1165 }
1166
1167 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1168 .make_group = target_fabric_make_wwn,
1169 .drop_item = target_fabric_drop_wwn,
1170 };
1171 /*
1172 * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1173 */
1174 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1175
1176 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1177 .show_attribute = target_fabric_wwn_attr_show,
1178 .store_attribute = target_fabric_wwn_attr_store,
1179 };
1180
1181 TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL);
1182
1183 /* End of tfc_wwn_cit */
1184
1185 /* Start of tfc_discovery_cit */
1186
1187 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1188 tf_disc_group);
1189
1190 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1191 .show_attribute = target_fabric_discovery_attr_show,
1192 .store_attribute = target_fabric_discovery_attr_store,
1193 };
1194
1195 TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL);
1196
1197 /* End of tfc_discovery_cit */
1198
target_fabric_setup_cits(struct target_fabric_configfs * tf)1199 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1200 {
1201 target_fabric_setup_discovery_cit(tf);
1202 target_fabric_setup_wwn_cit(tf);
1203 target_fabric_setup_wwn_fabric_stats_cit(tf);
1204 target_fabric_setup_tpg_cit(tf);
1205 target_fabric_setup_tpg_base_cit(tf);
1206 target_fabric_setup_tpg_port_cit(tf);
1207 target_fabric_setup_tpg_port_stat_cit(tf);
1208 target_fabric_setup_tpg_lun_cit(tf);
1209 target_fabric_setup_tpg_np_cit(tf);
1210 target_fabric_setup_tpg_np_base_cit(tf);
1211 target_fabric_setup_tpg_attrib_cit(tf);
1212 target_fabric_setup_tpg_param_cit(tf);
1213 target_fabric_setup_tpg_nacl_cit(tf);
1214 target_fabric_setup_tpg_nacl_base_cit(tf);
1215 target_fabric_setup_tpg_nacl_attrib_cit(tf);
1216 target_fabric_setup_tpg_nacl_auth_cit(tf);
1217 target_fabric_setup_tpg_nacl_param_cit(tf);
1218 target_fabric_setup_tpg_nacl_stat_cit(tf);
1219 target_fabric_setup_tpg_mappedlun_cit(tf);
1220 target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1221
1222 return 0;
1223 }
1224