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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*******************************************************************************
3* Filename: target_core_fabric_configfs.c
4 *
5 * This file contains generic fabric module configfs infrastructure for
6 * TCM v4.x code
7 *
8 * (c) Copyright 2010-2013 Datera, Inc.
9 *
10 * Nicholas A. Bellinger <nab@linux-iscsi.org>
11*
12 ****************************************************************************/
13
14#include <linux/kstrtox.h>
15#include <linux/module.h>
16#include <linux/moduleparam.h>
17#include <linux/utsname.h>
18#include <linux/init.h>
19#include <linux/fs.h>
20#include <linux/namei.h>
21#include <linux/slab.h>
22#include <linux/types.h>
23#include <linux/delay.h>
24#include <linux/unistd.h>
25#include <linux/string.h>
26#include <linux/syscalls.h>
27#include <linux/configfs.h>
28
29#include <target/target_core_base.h>
30#include <target/target_core_backend.h>
31#include <target/target_core_fabric.h>
32
33#include "target_core_internal.h"
34#include "target_core_alua.h"
35#include "target_core_pr.h"
36
37#define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
38static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
39{ \
40 struct config_item_type *cit = &tf->tf_##_name##_cit; \
41 \
42 cit->ct_item_ops = _item_ops; \
43 cit->ct_group_ops = _group_ops; \
44 cit->ct_attrs = _attrs; \
45 cit->ct_owner = tf->tf_ops->module; \
46 pr_debug("Setup generic %s\n", __stringify(_name)); \
47}
48
49#define TF_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
50static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
51{ \
52 struct config_item_type *cit = &tf->tf_##_name##_cit; \
53 struct configfs_attribute **attrs = tf->tf_ops->tfc_##_name##_attrs; \
54 \
55 cit->ct_item_ops = _item_ops; \
56 cit->ct_group_ops = _group_ops; \
57 cit->ct_attrs = attrs; \
58 cit->ct_owner = tf->tf_ops->module; \
59 pr_debug("Setup generic %s\n", __stringify(_name)); \
60}
61
62static struct configfs_item_operations target_fabric_port_item_ops;
63
64/* Start of tfc_tpg_mappedlun_cit */
65
66static int target_fabric_mappedlun_link(
67 struct config_item *lun_acl_ci,
68 struct config_item *lun_ci)
69{
70 struct se_dev_entry *deve;
71 struct se_lun *lun;
72 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
73 struct se_lun_acl, se_lun_group);
74 struct se_portal_group *se_tpg;
75 struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
76 bool lun_access_ro;
77
78 if (!lun_ci->ci_type ||
79 lun_ci->ci_type->ct_item_ops != &target_fabric_port_item_ops) {
80 pr_err("Bad lun_ci, not a valid lun_ci pointer: %p\n", lun_ci);
81 return -EFAULT;
82 }
83 lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
84
85 /*
86 * Ensure that the source port exists
87 */
88 if (!lun->lun_se_dev) {
89 pr_err("Source se_lun->lun_se_dev does not exist\n");
90 return -EINVAL;
91 }
92 if (lun->lun_shutdown) {
93 pr_err("Unable to create mappedlun symlink because"
94 " lun->lun_shutdown=true\n");
95 return -EINVAL;
96 }
97 se_tpg = lun->lun_tpg;
98
99 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
100 tpg_ci = &nacl_ci->ci_group->cg_item;
101 wwn_ci = &tpg_ci->ci_group->cg_item;
102 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
103 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
104 /*
105 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
106 */
107 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
108 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
109 config_item_name(wwn_ci));
110 return -EINVAL;
111 }
112 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
113 pr_err("Illegal Initiator ACL Symlink outside of %s"
114 " TPGT: %s\n", config_item_name(wwn_ci),
115 config_item_name(tpg_ci));
116 return -EINVAL;
117 }
118 /*
119 * If this struct se_node_acl was dynamically generated with
120 * tpg_1/attrib/generate_node_acls=1, use the existing
121 * deve->lun_access_ro value, which will be true when
122 * tpg_1/attrib/demo_mode_write_protect=1
123 */
124 rcu_read_lock();
125 deve = target_nacl_find_deve(lacl->se_lun_nacl, lacl->mapped_lun);
126 if (deve)
127 lun_access_ro = deve->lun_access_ro;
128 else
129 lun_access_ro =
130 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
131 se_tpg)) ? true : false;
132 rcu_read_unlock();
133 /*
134 * Determine the actual mapped LUN value user wants..
135 *
136 * This value is what the SCSI Initiator actually sees the
137 * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
138 */
139 return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access_ro);
140}
141
142static void target_fabric_mappedlun_unlink(
143 struct config_item *lun_acl_ci,
144 struct config_item *lun_ci)
145{
146 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
147 struct se_lun_acl, se_lun_group);
148 struct se_lun *lun = container_of(to_config_group(lun_ci),
149 struct se_lun, lun_group);
150
151 core_dev_del_initiator_node_lun_acl(lun, lacl);
152}
153
154static struct se_lun_acl *item_to_lun_acl(struct config_item *item)
155{
156 return container_of(to_config_group(item), struct se_lun_acl,
157 se_lun_group);
158}
159
160static ssize_t target_fabric_mappedlun_write_protect_show(
161 struct config_item *item, char *page)
162{
163 struct se_lun_acl *lacl = item_to_lun_acl(item);
164 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
165 struct se_dev_entry *deve;
166 ssize_t len = 0;
167
168 rcu_read_lock();
169 deve = target_nacl_find_deve(se_nacl, lacl->mapped_lun);
170 if (deve) {
171 len = sprintf(page, "%d\n", deve->lun_access_ro);
172 }
173 rcu_read_unlock();
174
175 return len;
176}
177
178static ssize_t target_fabric_mappedlun_write_protect_store(
179 struct config_item *item, const char *page, size_t count)
180{
181 struct se_lun_acl *lacl = item_to_lun_acl(item);
182 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
183 struct se_portal_group *se_tpg = se_nacl->se_tpg;
184 unsigned long wp;
185 int ret;
186
187 ret = kstrtoul(page, 0, &wp);
188 if (ret)
189 return ret;
190
191 if ((wp != 1) && (wp != 0))
192 return -EINVAL;
193
194 /* wp=1 means lun_access_ro=true */
195 core_update_device_list_access(lacl->mapped_lun, wp, lacl->se_lun_nacl);
196
197 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
198 " Mapped LUN: %llu Write Protect bit to %s\n",
199 se_tpg->se_tpg_tfo->fabric_name,
200 se_nacl->initiatorname, lacl->mapped_lun, (wp) ? "ON" : "OFF");
201
202 return count;
203
204}
205
206CONFIGFS_ATTR(target_fabric_mappedlun_, write_protect);
207
208static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
209 &target_fabric_mappedlun_attr_write_protect,
210 NULL,
211};
212
213static void target_fabric_mappedlun_release(struct config_item *item)
214{
215 struct se_lun_acl *lacl = container_of(to_config_group(item),
216 struct se_lun_acl, se_lun_group);
217 struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
218
219 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
220}
221
222static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
223 .release = target_fabric_mappedlun_release,
224 .allow_link = target_fabric_mappedlun_link,
225 .drop_link = target_fabric_mappedlun_unlink,
226};
227
228TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
229 target_fabric_mappedlun_attrs);
230
231/* End of tfc_tpg_mappedlun_cit */
232
233/* Start of tfc_tpg_mappedlun_port_cit */
234
235static struct config_group *target_core_mappedlun_stat_mkdir(
236 struct config_group *group,
237 const char *name)
238{
239 return ERR_PTR(-ENOSYS);
240}
241
242static void target_core_mappedlun_stat_rmdir(
243 struct config_group *group,
244 struct config_item *item)
245{
246 return;
247}
248
249static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
250 .make_group = target_core_mappedlun_stat_mkdir,
251 .drop_item = target_core_mappedlun_stat_rmdir,
252};
253
254TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
255 NULL);
256
257/* End of tfc_tpg_mappedlun_port_cit */
258
259TF_CIT_SETUP_DRV(tpg_nacl_attrib, NULL, NULL);
260TF_CIT_SETUP_DRV(tpg_nacl_auth, NULL, NULL);
261TF_CIT_SETUP_DRV(tpg_nacl_param, NULL, NULL);
262
263/* Start of tfc_tpg_nacl_base_cit */
264
265static struct config_group *target_fabric_make_mappedlun(
266 struct config_group *group,
267 const char *name)
268{
269 struct se_node_acl *se_nacl = container_of(group,
270 struct se_node_acl, acl_group);
271 struct se_portal_group *se_tpg = se_nacl->se_tpg;
272 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
273 struct se_lun_acl *lacl = NULL;
274 char *buf;
275 unsigned long long mapped_lun;
276 int ret = 0;
277
278 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
279 if (!buf) {
280 pr_err("Unable to allocate memory for name buf\n");
281 return ERR_PTR(-ENOMEM);
282 }
283 snprintf(buf, strlen(name) + 1, "%s", name);
284 /*
285 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
286 */
287 if (strstr(buf, "lun_") != buf) {
288 pr_err("Unable to locate \"lun_\" from buf: %s"
289 " name: %s\n", buf, name);
290 ret = -EINVAL;
291 goto out;
292 }
293 /*
294 * Determine the Mapped LUN value. This is what the SCSI Initiator
295 * Port will actually see.
296 */
297 ret = kstrtoull(buf + 4, 0, &mapped_lun);
298 if (ret)
299 goto out;
300
301 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
302 mapped_lun, &ret);
303 if (!lacl) {
304 ret = -EINVAL;
305 goto out;
306 }
307
308 config_group_init_type_name(&lacl->se_lun_group, name,
309 &tf->tf_tpg_mappedlun_cit);
310
311 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
312 "statistics", &tf->tf_tpg_mappedlun_stat_cit);
313 configfs_add_default_group(&lacl->ml_stat_grps.stat_group,
314 &lacl->se_lun_group);
315
316 target_stat_setup_mappedlun_default_groups(lacl);
317
318 kfree(buf);
319 return &lacl->se_lun_group;
320out:
321 kfree(lacl);
322 kfree(buf);
323 return ERR_PTR(ret);
324}
325
326static void target_fabric_drop_mappedlun(
327 struct config_group *group,
328 struct config_item *item)
329{
330 struct se_lun_acl *lacl = container_of(to_config_group(item),
331 struct se_lun_acl, se_lun_group);
332
333 configfs_remove_default_groups(&lacl->ml_stat_grps.stat_group);
334 configfs_remove_default_groups(&lacl->se_lun_group);
335
336 config_item_put(item);
337}
338
339static void target_fabric_nacl_base_release(struct config_item *item)
340{
341 struct se_node_acl *se_nacl = container_of(to_config_group(item),
342 struct se_node_acl, acl_group);
343
344 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
345 core_tpg_del_initiator_node_acl(se_nacl);
346}
347
348static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
349 .release = target_fabric_nacl_base_release,
350};
351
352static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
353 .make_group = target_fabric_make_mappedlun,
354 .drop_item = target_fabric_drop_mappedlun,
355};
356
357TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
358 &target_fabric_nacl_base_group_ops);
359
360/* End of tfc_tpg_nacl_base_cit */
361
362/* Start of tfc_node_fabric_stats_cit */
363/*
364 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
365 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
366 */
367TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
368
369/* End of tfc_wwn_fabric_stats_cit */
370
371/* Start of tfc_tpg_nacl_cit */
372
373static struct config_group *target_fabric_make_nodeacl(
374 struct config_group *group,
375 const char *name)
376{
377 struct se_portal_group *se_tpg = container_of(group,
378 struct se_portal_group, tpg_acl_group);
379 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
380 struct se_node_acl *se_nacl;
381
382 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
383 if (IS_ERR(se_nacl))
384 return ERR_CAST(se_nacl);
385
386 config_group_init_type_name(&se_nacl->acl_group, name,
387 &tf->tf_tpg_nacl_base_cit);
388
389 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
390 &tf->tf_tpg_nacl_attrib_cit);
391 configfs_add_default_group(&se_nacl->acl_attrib_group,
392 &se_nacl->acl_group);
393
394 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
395 &tf->tf_tpg_nacl_auth_cit);
396 configfs_add_default_group(&se_nacl->acl_auth_group,
397 &se_nacl->acl_group);
398
399 config_group_init_type_name(&se_nacl->acl_param_group, "param",
400 &tf->tf_tpg_nacl_param_cit);
401 configfs_add_default_group(&se_nacl->acl_param_group,
402 &se_nacl->acl_group);
403
404 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
405 "fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
406 configfs_add_default_group(&se_nacl->acl_fabric_stat_group,
407 &se_nacl->acl_group);
408
409 if (tf->tf_ops->fabric_init_nodeacl) {
410 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
411 if (ret) {
412 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
413 core_tpg_del_initiator_node_acl(se_nacl);
414 return ERR_PTR(ret);
415 }
416 }
417
418 return &se_nacl->acl_group;
419}
420
421static void target_fabric_drop_nodeacl(
422 struct config_group *group,
423 struct config_item *item)
424{
425 struct se_node_acl *se_nacl = container_of(to_config_group(item),
426 struct se_node_acl, acl_group);
427
428 configfs_remove_default_groups(&se_nacl->acl_group);
429
430 /*
431 * struct se_node_acl free is done in target_fabric_nacl_base_release()
432 */
433 config_item_put(item);
434}
435
436static struct configfs_group_operations target_fabric_nacl_group_ops = {
437 .make_group = target_fabric_make_nodeacl,
438 .drop_item = target_fabric_drop_nodeacl,
439};
440
441TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
442
443/* End of tfc_tpg_nacl_cit */
444
445/* Start of tfc_tpg_np_base_cit */
446
447static void target_fabric_np_base_release(struct config_item *item)
448{
449 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
450 struct se_tpg_np, tpg_np_group);
451 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
452 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
453
454 tf->tf_ops->fabric_drop_np(se_tpg_np);
455}
456
457static struct configfs_item_operations target_fabric_np_base_item_ops = {
458 .release = target_fabric_np_base_release,
459};
460
461TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
462
463/* End of tfc_tpg_np_base_cit */
464
465/* Start of tfc_tpg_np_cit */
466
467static struct config_group *target_fabric_make_np(
468 struct config_group *group,
469 const char *name)
470{
471 struct se_portal_group *se_tpg = container_of(group,
472 struct se_portal_group, tpg_np_group);
473 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
474 struct se_tpg_np *se_tpg_np;
475
476 if (!tf->tf_ops->fabric_make_np) {
477 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
478 return ERR_PTR(-ENOSYS);
479 }
480
481 se_tpg_np = tf->tf_ops->fabric_make_np(se_tpg, group, name);
482 if (!se_tpg_np || IS_ERR(se_tpg_np))
483 return ERR_PTR(-EINVAL);
484
485 se_tpg_np->tpg_np_parent = se_tpg;
486 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
487 &tf->tf_tpg_np_base_cit);
488
489 return &se_tpg_np->tpg_np_group;
490}
491
492static void target_fabric_drop_np(
493 struct config_group *group,
494 struct config_item *item)
495{
496 /*
497 * struct se_tpg_np is released via target_fabric_np_base_release()
498 */
499 config_item_put(item);
500}
501
502static struct configfs_group_operations target_fabric_np_group_ops = {
503 .make_group = &target_fabric_make_np,
504 .drop_item = &target_fabric_drop_np,
505};
506
507TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
508
509/* End of tfc_tpg_np_cit */
510
511/* Start of tfc_tpg_port_cit */
512
513static struct se_lun *item_to_lun(struct config_item *item)
514{
515 return container_of(to_config_group(item), struct se_lun,
516 lun_group);
517}
518
519static ssize_t target_fabric_port_alua_tg_pt_gp_show(struct config_item *item,
520 char *page)
521{
522 struct se_lun *lun = item_to_lun(item);
523
524 if (!lun->lun_se_dev)
525 return -ENODEV;
526
527 return core_alua_show_tg_pt_gp_info(lun, page);
528}
529
530static ssize_t target_fabric_port_alua_tg_pt_gp_store(struct config_item *item,
531 const char *page, size_t count)
532{
533 struct se_lun *lun = item_to_lun(item);
534
535 if (!lun->lun_se_dev)
536 return -ENODEV;
537
538 return core_alua_store_tg_pt_gp_info(lun, page, count);
539}
540
541static ssize_t target_fabric_port_alua_tg_pt_offline_show(
542 struct config_item *item, char *page)
543{
544 struct se_lun *lun = item_to_lun(item);
545
546 if (!lun->lun_se_dev)
547 return -ENODEV;
548
549 return core_alua_show_offline_bit(lun, page);
550}
551
552static ssize_t target_fabric_port_alua_tg_pt_offline_store(
553 struct config_item *item, const char *page, size_t count)
554{
555 struct se_lun *lun = item_to_lun(item);
556
557 if (!lun->lun_se_dev)
558 return -ENODEV;
559
560 return core_alua_store_offline_bit(lun, page, count);
561}
562
563static ssize_t target_fabric_port_alua_tg_pt_status_show(
564 struct config_item *item, char *page)
565{
566 struct se_lun *lun = item_to_lun(item);
567
568 if (!lun->lun_se_dev)
569 return -ENODEV;
570
571 return core_alua_show_secondary_status(lun, page);
572}
573
574static ssize_t target_fabric_port_alua_tg_pt_status_store(
575 struct config_item *item, const char *page, size_t count)
576{
577 struct se_lun *lun = item_to_lun(item);
578
579 if (!lun->lun_se_dev)
580 return -ENODEV;
581
582 return core_alua_store_secondary_status(lun, page, count);
583}
584
585static ssize_t target_fabric_port_alua_tg_pt_write_md_show(
586 struct config_item *item, char *page)
587{
588 struct se_lun *lun = item_to_lun(item);
589
590 if (!lun->lun_se_dev)
591 return -ENODEV;
592
593 return core_alua_show_secondary_write_metadata(lun, page);
594}
595
596static ssize_t target_fabric_port_alua_tg_pt_write_md_store(
597 struct config_item *item, const char *page, size_t count)
598{
599 struct se_lun *lun = item_to_lun(item);
600
601 if (!lun->lun_se_dev)
602 return -ENODEV;
603
604 return core_alua_store_secondary_write_metadata(lun, page, count);
605}
606
607CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_gp);
608CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_offline);
609CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_status);
610CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_write_md);
611
612static struct configfs_attribute *target_fabric_port_attrs[] = {
613 &target_fabric_port_attr_alua_tg_pt_gp,
614 &target_fabric_port_attr_alua_tg_pt_offline,
615 &target_fabric_port_attr_alua_tg_pt_status,
616 &target_fabric_port_attr_alua_tg_pt_write_md,
617 NULL,
618};
619
620static int target_fabric_port_link(
621 struct config_item *lun_ci,
622 struct config_item *se_dev_ci)
623{
624 struct config_item *tpg_ci;
625 struct se_lun *lun = container_of(to_config_group(lun_ci),
626 struct se_lun, lun_group);
627 struct se_portal_group *se_tpg;
628 struct se_device *dev;
629 struct target_fabric_configfs *tf;
630 int ret;
631
632 if (!se_dev_ci->ci_type ||
633 se_dev_ci->ci_type->ct_item_ops != &target_core_dev_item_ops) {
634 pr_err("Bad se_dev_ci, not a valid se_dev_ci pointer: %p\n", se_dev_ci);
635 return -EFAULT;
636 }
637 dev = container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
638
639 if (!target_dev_configured(dev)) {
640 pr_err("se_device not configured yet, cannot port link\n");
641 return -ENODEV;
642 }
643
644 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
645 se_tpg = container_of(to_config_group(tpg_ci),
646 struct se_portal_group, tpg_group);
647 tf = se_tpg->se_tpg_wwn->wwn_tf;
648
649 if (lun->lun_se_dev != NULL) {
650 pr_err("Port Symlink already exists\n");
651 return -EEXIST;
652 }
653
654 ret = core_dev_add_lun(se_tpg, dev, lun);
655 if (ret) {
656 pr_err("core_dev_add_lun() failed: %d\n", ret);
657 goto out;
658 }
659
660 if (tf->tf_ops->fabric_post_link) {
661 /*
662 * Call the optional fabric_post_link() to allow a
663 * fabric module to setup any additional state once
664 * core_dev_add_lun() has been called..
665 */
666 tf->tf_ops->fabric_post_link(se_tpg, lun);
667 }
668
669 return 0;
670out:
671 return ret;
672}
673
674static void target_fabric_port_unlink(
675 struct config_item *lun_ci,
676 struct config_item *se_dev_ci)
677{
678 struct se_lun *lun = container_of(to_config_group(lun_ci),
679 struct se_lun, lun_group);
680 struct se_portal_group *se_tpg = lun->lun_tpg;
681 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
682
683 if (tf->tf_ops->fabric_pre_unlink) {
684 /*
685 * Call the optional fabric_pre_unlink() to allow a
686 * fabric module to release any additional stat before
687 * core_dev_del_lun() is called.
688 */
689 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
690 }
691
692 core_dev_del_lun(se_tpg, lun);
693}
694
695static void target_fabric_port_release(struct config_item *item)
696{
697 struct se_lun *lun = container_of(to_config_group(item),
698 struct se_lun, lun_group);
699
700 kfree_rcu(lun, rcu_head);
701}
702
703static struct configfs_item_operations target_fabric_port_item_ops = {
704 .release = target_fabric_port_release,
705 .allow_link = target_fabric_port_link,
706 .drop_link = target_fabric_port_unlink,
707};
708
709TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
710
711/* End of tfc_tpg_port_cit */
712
713/* Start of tfc_tpg_port_stat_cit */
714
715static struct config_group *target_core_port_stat_mkdir(
716 struct config_group *group,
717 const char *name)
718{
719 return ERR_PTR(-ENOSYS);
720}
721
722static void target_core_port_stat_rmdir(
723 struct config_group *group,
724 struct config_item *item)
725{
726 return;
727}
728
729static struct configfs_group_operations target_fabric_port_stat_group_ops = {
730 .make_group = target_core_port_stat_mkdir,
731 .drop_item = target_core_port_stat_rmdir,
732};
733
734TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
735
736/* End of tfc_tpg_port_stat_cit */
737
738/* Start of tfc_tpg_lun_cit */
739
740static struct config_group *target_fabric_make_lun(
741 struct config_group *group,
742 const char *name)
743{
744 struct se_lun *lun;
745 struct se_portal_group *se_tpg = container_of(group,
746 struct se_portal_group, tpg_lun_group);
747 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
748 unsigned long long unpacked_lun;
749 int errno;
750
751 if (strstr(name, "lun_") != name) {
752 pr_err("Unable to locate \'_\" in"
753 " \"lun_$LUN_NUMBER\"\n");
754 return ERR_PTR(-EINVAL);
755 }
756 errno = kstrtoull(name + 4, 0, &unpacked_lun);
757 if (errno)
758 return ERR_PTR(errno);
759
760 lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
761 if (IS_ERR(lun))
762 return ERR_CAST(lun);
763
764 config_group_init_type_name(&lun->lun_group, name,
765 &tf->tf_tpg_port_cit);
766
767 config_group_init_type_name(&lun->port_stat_grps.stat_group,
768 "statistics", &tf->tf_tpg_port_stat_cit);
769 configfs_add_default_group(&lun->port_stat_grps.stat_group,
770 &lun->lun_group);
771
772 target_stat_setup_port_default_groups(lun);
773
774 return &lun->lun_group;
775}
776
777static void target_fabric_drop_lun(
778 struct config_group *group,
779 struct config_item *item)
780{
781 struct se_lun *lun = container_of(to_config_group(item),
782 struct se_lun, lun_group);
783
784 configfs_remove_default_groups(&lun->port_stat_grps.stat_group);
785 configfs_remove_default_groups(&lun->lun_group);
786
787 config_item_put(item);
788}
789
790static struct configfs_group_operations target_fabric_lun_group_ops = {
791 .make_group = &target_fabric_make_lun,
792 .drop_item = &target_fabric_drop_lun,
793};
794
795TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
796
797/* End of tfc_tpg_lun_cit */
798
799TF_CIT_SETUP_DRV(tpg_attrib, NULL, NULL);
800TF_CIT_SETUP_DRV(tpg_auth, NULL, NULL);
801TF_CIT_SETUP_DRV(tpg_param, NULL, NULL);
802
803/* Start of tfc_tpg_base_cit */
804
805static void target_fabric_tpg_release(struct config_item *item)
806{
807 struct se_portal_group *se_tpg = container_of(to_config_group(item),
808 struct se_portal_group, tpg_group);
809 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
810 struct target_fabric_configfs *tf = wwn->wwn_tf;
811
812 tf->tf_ops->fabric_drop_tpg(se_tpg);
813}
814
815static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
816 .release = target_fabric_tpg_release,
817};
818
819static ssize_t target_fabric_tpg_base_enable_show(struct config_item *item,
820 char *page)
821{
822 return sysfs_emit(page, "%d\n", to_tpg(item)->enabled);
823}
824
825static ssize_t target_fabric_tpg_base_enable_store(struct config_item *item,
826 const char *page,
827 size_t count)
828{
829 struct se_portal_group *se_tpg = to_tpg(item);
830 int ret;
831 bool op;
832
833 ret = kstrtobool(page, &op);
834 if (ret)
835 return ret;
836
837 if (se_tpg->enabled == op)
838 return count;
839 if (op)
840 ret = target_tpg_enable(se_tpg);
841 else
842 ret = target_tpg_disable(se_tpg);
843 if (ret)
844 return ret;
845 return count;
846}
847static ssize_t target_fabric_tpg_base_rtpi_show(struct config_item *item, char *page)
848{
849 struct se_portal_group *se_tpg = to_tpg(item);
850
851 return sysfs_emit(page, "%#x\n", se_tpg->tpg_rtpi);
852}
853
854static ssize_t target_fabric_tpg_base_rtpi_store(struct config_item *item,
855 const char *page, size_t count)
856{
857 struct se_portal_group *se_tpg = to_tpg(item);
858 u16 val;
859 int ret;
860
861 ret = kstrtou16(page, 0, &val);
862 if (ret < 0)
863 return ret;
864 if (val == 0)
865 return -EINVAL;
866
867 if (se_tpg->enabled) {
868 pr_info("%s_TPG[%hu] - Can not change RTPI on enabled TPG",
869 se_tpg->se_tpg_tfo->fabric_name,
870 se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
871 return -EINVAL;
872 }
873
874 se_tpg->tpg_rtpi = val;
875 se_tpg->rtpi_manual = true;
876
877 return count;
878}
879
880CONFIGFS_ATTR(target_fabric_tpg_base_, enable);
881CONFIGFS_ATTR(target_fabric_tpg_base_, rtpi);
882
883static int
884target_fabric_setup_tpg_base_cit(struct target_fabric_configfs *tf)
885{
886 struct config_item_type *cit = &tf->tf_tpg_base_cit;
887 struct configfs_attribute **attrs = NULL;
888 size_t nr_attrs = 0;
889 int i = 0;
890
891 if (tf->tf_ops->tfc_tpg_base_attrs)
892 while (tf->tf_ops->tfc_tpg_base_attrs[nr_attrs] != NULL)
893 nr_attrs++;
894
895 if (tf->tf_ops->fabric_enable_tpg)
896 nr_attrs++;
897
898 /* + 1 for target_fabric_tpg_base_attr_rtpi */
899 nr_attrs++;
900
901 /* + 1 for final NULL in the array */
902 attrs = kcalloc(nr_attrs + 1, sizeof(*attrs), GFP_KERNEL);
903 if (!attrs)
904 return -ENOMEM;
905
906 if (tf->tf_ops->tfc_tpg_base_attrs)
907 for (; tf->tf_ops->tfc_tpg_base_attrs[i] != NULL; i++)
908 attrs[i] = tf->tf_ops->tfc_tpg_base_attrs[i];
909
910 if (tf->tf_ops->fabric_enable_tpg)
911 attrs[i++] = &target_fabric_tpg_base_attr_enable;
912
913 attrs[i++] = &target_fabric_tpg_base_attr_rtpi;
914
915 cit->ct_item_ops = &target_fabric_tpg_base_item_ops;
916 cit->ct_attrs = attrs;
917 cit->ct_owner = tf->tf_ops->module;
918 pr_debug("Setup generic tpg_base\n");
919
920 return 0;
921}
922/* End of tfc_tpg_base_cit */
923
924/* Start of tfc_tpg_cit */
925
926static struct config_group *target_fabric_make_tpg(
927 struct config_group *group,
928 const char *name)
929{
930 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
931 struct target_fabric_configfs *tf = wwn->wwn_tf;
932 struct se_portal_group *se_tpg;
933
934 if (!tf->tf_ops->fabric_make_tpg) {
935 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
936 return ERR_PTR(-ENOSYS);
937 }
938
939 se_tpg = tf->tf_ops->fabric_make_tpg(wwn, name);
940 if (!se_tpg || IS_ERR(se_tpg))
941 return ERR_PTR(-EINVAL);
942
943 config_group_init_type_name(&se_tpg->tpg_group, name,
944 &tf->tf_tpg_base_cit);
945
946 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
947 &tf->tf_tpg_lun_cit);
948 configfs_add_default_group(&se_tpg->tpg_lun_group,
949 &se_tpg->tpg_group);
950
951 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
952 &tf->tf_tpg_np_cit);
953 configfs_add_default_group(&se_tpg->tpg_np_group,
954 &se_tpg->tpg_group);
955
956 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
957 &tf->tf_tpg_nacl_cit);
958 configfs_add_default_group(&se_tpg->tpg_acl_group,
959 &se_tpg->tpg_group);
960
961 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
962 &tf->tf_tpg_attrib_cit);
963 configfs_add_default_group(&se_tpg->tpg_attrib_group,
964 &se_tpg->tpg_group);
965
966 config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
967 &tf->tf_tpg_auth_cit);
968 configfs_add_default_group(&se_tpg->tpg_auth_group,
969 &se_tpg->tpg_group);
970
971 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
972 &tf->tf_tpg_param_cit);
973 configfs_add_default_group(&se_tpg->tpg_param_group,
974 &se_tpg->tpg_group);
975
976 return &se_tpg->tpg_group;
977}
978
979static void target_fabric_drop_tpg(
980 struct config_group *group,
981 struct config_item *item)
982{
983 struct se_portal_group *se_tpg = container_of(to_config_group(item),
984 struct se_portal_group, tpg_group);
985
986 configfs_remove_default_groups(&se_tpg->tpg_group);
987 config_item_put(item);
988}
989
990static void target_fabric_release_wwn(struct config_item *item)
991{
992 struct se_wwn *wwn = container_of(to_config_group(item),
993 struct se_wwn, wwn_group);
994 struct target_fabric_configfs *tf = wwn->wwn_tf;
995
996 configfs_remove_default_groups(&wwn->fabric_stat_group);
997 configfs_remove_default_groups(&wwn->param_group);
998 tf->tf_ops->fabric_drop_wwn(wwn);
999}
1000
1001static struct configfs_item_operations target_fabric_tpg_item_ops = {
1002 .release = target_fabric_release_wwn,
1003};
1004
1005static struct configfs_group_operations target_fabric_tpg_group_ops = {
1006 .make_group = target_fabric_make_tpg,
1007 .drop_item = target_fabric_drop_tpg,
1008};
1009
1010TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1011 NULL);
1012
1013/* End of tfc_tpg_cit */
1014
1015/* Start of tfc_wwn_fabric_stats_cit */
1016/*
1017 * This is used as a placeholder for struct se_wwn->fabric_stat_group
1018 * to allow fabrics access to ->fabric_stat_group->default_groups[]
1019 */
1020TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1021
1022/* End of tfc_wwn_fabric_stats_cit */
1023
1024static ssize_t
1025target_fabric_wwn_cmd_completion_affinity_show(struct config_item *item,
1026 char *page)
1027{
1028 struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn,
1029 param_group);
1030 return sprintf(page, "%d\n",
1031 wwn->cmd_compl_affinity == WORK_CPU_UNBOUND ?
1032 SE_COMPL_AFFINITY_CURR_CPU : wwn->cmd_compl_affinity);
1033}
1034
1035static ssize_t
1036target_fabric_wwn_cmd_completion_affinity_store(struct config_item *item,
1037 const char *page, size_t count)
1038{
1039 struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn,
1040 param_group);
1041 int compl_val;
1042
1043 if (kstrtoint(page, 0, &compl_val))
1044 return -EINVAL;
1045
1046 switch (compl_val) {
1047 case SE_COMPL_AFFINITY_CPUID:
1048 wwn->cmd_compl_affinity = compl_val;
1049 break;
1050 case SE_COMPL_AFFINITY_CURR_CPU:
1051 wwn->cmd_compl_affinity = WORK_CPU_UNBOUND;
1052 break;
1053 default:
1054 if (compl_val < 0 || compl_val >= nr_cpu_ids ||
1055 !cpu_online(compl_val)) {
1056 pr_err("Command completion value must be between %d and %d or an online CPU.\n",
1057 SE_COMPL_AFFINITY_CPUID,
1058 SE_COMPL_AFFINITY_CURR_CPU);
1059 return -EINVAL;
1060 }
1061 wwn->cmd_compl_affinity = compl_val;
1062 }
1063
1064 return count;
1065}
1066CONFIGFS_ATTR(target_fabric_wwn_, cmd_completion_affinity);
1067
1068static ssize_t
1069target_fabric_wwn_default_submit_type_show(struct config_item *item,
1070 char *page)
1071{
1072 struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn,
1073 param_group);
1074 return sysfs_emit(page, "%u\n",
1075 wwn->wwn_tf->tf_ops->default_submit_type);
1076}
1077CONFIGFS_ATTR_RO(target_fabric_wwn_, default_submit_type);
1078
1079static ssize_t
1080target_fabric_wwn_direct_submit_supported_show(struct config_item *item,
1081 char *page)
1082{
1083 struct se_wwn *wwn = container_of(to_config_group(item), struct se_wwn,
1084 param_group);
1085 return sysfs_emit(page, "%u\n",
1086 wwn->wwn_tf->tf_ops->direct_submit_supp);
1087}
1088CONFIGFS_ATTR_RO(target_fabric_wwn_, direct_submit_supported);
1089
1090static struct configfs_attribute *target_fabric_wwn_param_attrs[] = {
1091 &target_fabric_wwn_attr_cmd_completion_affinity,
1092 &target_fabric_wwn_attr_default_submit_type,
1093 &target_fabric_wwn_attr_direct_submit_supported,
1094 NULL,
1095};
1096
1097TF_CIT_SETUP(wwn_param, NULL, NULL, target_fabric_wwn_param_attrs);
1098
1099/* Start of tfc_wwn_cit */
1100
1101static struct config_group *target_fabric_make_wwn(
1102 struct config_group *group,
1103 const char *name)
1104{
1105 struct target_fabric_configfs *tf = container_of(group,
1106 struct target_fabric_configfs, tf_group);
1107 struct se_wwn *wwn;
1108
1109 if (!tf->tf_ops->fabric_make_wwn) {
1110 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1111 return ERR_PTR(-ENOSYS);
1112 }
1113
1114 wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
1115 if (!wwn || IS_ERR(wwn))
1116 return ERR_PTR(-EINVAL);
1117
1118 wwn->cmd_compl_affinity = SE_COMPL_AFFINITY_CPUID;
1119 wwn->wwn_tf = tf;
1120
1121 config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
1122
1123 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1124 &tf->tf_wwn_fabric_stats_cit);
1125 configfs_add_default_group(&wwn->fabric_stat_group, &wwn->wwn_group);
1126
1127 config_group_init_type_name(&wwn->param_group, "param",
1128 &tf->tf_wwn_param_cit);
1129 configfs_add_default_group(&wwn->param_group, &wwn->wwn_group);
1130
1131 if (tf->tf_ops->add_wwn_groups)
1132 tf->tf_ops->add_wwn_groups(wwn);
1133 return &wwn->wwn_group;
1134}
1135
1136static void target_fabric_drop_wwn(
1137 struct config_group *group,
1138 struct config_item *item)
1139{
1140 struct se_wwn *wwn = container_of(to_config_group(item),
1141 struct se_wwn, wwn_group);
1142
1143 configfs_remove_default_groups(&wwn->wwn_group);
1144 config_item_put(item);
1145}
1146
1147static struct configfs_group_operations target_fabric_wwn_group_ops = {
1148 .make_group = target_fabric_make_wwn,
1149 .drop_item = target_fabric_drop_wwn,
1150};
1151
1152TF_CIT_SETUP_DRV(wwn, NULL, &target_fabric_wwn_group_ops);
1153TF_CIT_SETUP_DRV(discovery, NULL, NULL);
1154
1155int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1156{
1157 int ret;
1158
1159 target_fabric_setup_discovery_cit(tf);
1160 target_fabric_setup_wwn_cit(tf);
1161 target_fabric_setup_wwn_fabric_stats_cit(tf);
1162 target_fabric_setup_wwn_param_cit(tf);
1163 target_fabric_setup_tpg_cit(tf);
1164
1165 ret = target_fabric_setup_tpg_base_cit(tf);
1166 if (ret)
1167 return ret;
1168
1169 target_fabric_setup_tpg_port_cit(tf);
1170 target_fabric_setup_tpg_port_stat_cit(tf);
1171 target_fabric_setup_tpg_lun_cit(tf);
1172 target_fabric_setup_tpg_np_cit(tf);
1173 target_fabric_setup_tpg_np_base_cit(tf);
1174 target_fabric_setup_tpg_attrib_cit(tf);
1175 target_fabric_setup_tpg_auth_cit(tf);
1176 target_fabric_setup_tpg_param_cit(tf);
1177 target_fabric_setup_tpg_nacl_cit(tf);
1178 target_fabric_setup_tpg_nacl_base_cit(tf);
1179 target_fabric_setup_tpg_nacl_attrib_cit(tf);
1180 target_fabric_setup_tpg_nacl_auth_cit(tf);
1181 target_fabric_setup_tpg_nacl_param_cit(tf);
1182 target_fabric_setup_tpg_nacl_stat_cit(tf);
1183 target_fabric_setup_tpg_mappedlun_cit(tf);
1184 target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1185
1186 return 0;
1187}
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 2010-2013 Datera, Inc.
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
39#include "target_core_internal.h"
40#include "target_core_alua.h"
41#include "target_core_pr.h"
42
43#define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
44static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
45{ \
46 struct config_item_type *cit = &tf->tf_##_name##_cit; \
47 \
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)); \
53}
54
55#define TF_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
56static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
57{ \
58 struct config_item_type *cit = &tf->tf_##_name##_cit; \
59 struct configfs_attribute **attrs = tf->tf_ops->tfc_##_name##_attrs; \
60 \
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)); \
66}
67
68/* Start of tfc_tpg_mappedlun_cit */
69
70static int target_fabric_mappedlun_link(
71 struct config_item *lun_acl_ci,
72 struct config_item *lun_ci)
73{
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;
81 bool lun_access_ro;
82
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);
86 return -EFAULT;
87 }
88 /*
89 * Ensure that the source port exists
90 */
91 if (!lun->lun_se_dev) {
92 pr_err("Source se_lun->lun_se_dev does not exist\n");
93 return -EINVAL;
94 }
95 se_tpg = lun->lun_tpg;
96
97 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
98 tpg_ci = &nacl_ci->ci_group->cg_item;
99 wwn_ci = &tpg_ci->ci_group->cg_item;
100 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
101 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
102 /*
103 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
104 */
105 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
106 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
107 config_item_name(wwn_ci));
108 return -EINVAL;
109 }
110 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
111 pr_err("Illegal Initiator ACL Symlink outside of %s"
112 " TPGT: %s\n", config_item_name(wwn_ci),
113 config_item_name(tpg_ci));
114 return -EINVAL;
115 }
116 /*
117 * If this struct se_node_acl was dynamically generated with
118 * tpg_1/attrib/generate_node_acls=1, use the existing
119 * deve->lun_access_ro value, which will be true when
120 * tpg_1/attrib/demo_mode_write_protect=1
121 */
122 rcu_read_lock();
123 deve = target_nacl_find_deve(lacl->se_lun_nacl, lacl->mapped_lun);
124 if (deve)
125 lun_access_ro = deve->lun_access_ro;
126 else
127 lun_access_ro =
128 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
129 se_tpg)) ? true : false;
130 rcu_read_unlock();
131 /*
132 * Determine the actual mapped LUN value user wants..
133 *
134 * This value is what the SCSI Initiator actually sees the
135 * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
136 */
137 return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access_ro);
138}
139
140static void target_fabric_mappedlun_unlink(
141 struct config_item *lun_acl_ci,
142 struct config_item *lun_ci)
143{
144 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
145 struct se_lun_acl, se_lun_group);
146 struct se_lun *lun = container_of(to_config_group(lun_ci),
147 struct se_lun, lun_group);
148
149 core_dev_del_initiator_node_lun_acl(lun, lacl);
150}
151
152static struct se_lun_acl *item_to_lun_acl(struct config_item *item)
153{
154 return container_of(to_config_group(item), struct se_lun_acl,
155 se_lun_group);
156}
157
158static ssize_t target_fabric_mappedlun_write_protect_show(
159 struct config_item *item, char *page)
160{
161 struct se_lun_acl *lacl = item_to_lun_acl(item);
162 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
163 struct se_dev_entry *deve;
164 ssize_t len = 0;
165
166 rcu_read_lock();
167 deve = target_nacl_find_deve(se_nacl, lacl->mapped_lun);
168 if (deve) {
169 len = sprintf(page, "%d\n", deve->lun_access_ro);
170 }
171 rcu_read_unlock();
172
173 return len;
174}
175
176static ssize_t target_fabric_mappedlun_write_protect_store(
177 struct config_item *item, const char *page, size_t count)
178{
179 struct se_lun_acl *lacl = item_to_lun_acl(item);
180 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
181 struct se_portal_group *se_tpg = se_nacl->se_tpg;
182 unsigned long wp;
183 int ret;
184
185 ret = kstrtoul(page, 0, &wp);
186 if (ret)
187 return ret;
188
189 if ((wp != 1) && (wp != 0))
190 return -EINVAL;
191
192 /* wp=1 means lun_access_ro=true */
193 core_update_device_list_access(lacl->mapped_lun, wp, lacl->se_lun_nacl);
194
195 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
196 " Mapped LUN: %llu Write Protect bit to %s\n",
197 se_tpg->se_tpg_tfo->get_fabric_name(),
198 se_nacl->initiatorname, lacl->mapped_lun, (wp) ? "ON" : "OFF");
199
200 return count;
201
202}
203
204CONFIGFS_ATTR(target_fabric_mappedlun_, write_protect);
205
206static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
207 &target_fabric_mappedlun_attr_write_protect,
208 NULL,
209};
210
211static void target_fabric_mappedlun_release(struct config_item *item)
212{
213 struct se_lun_acl *lacl = container_of(to_config_group(item),
214 struct se_lun_acl, se_lun_group);
215 struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
216
217 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
218}
219
220static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
221 .release = target_fabric_mappedlun_release,
222 .allow_link = target_fabric_mappedlun_link,
223 .drop_link = target_fabric_mappedlun_unlink,
224};
225
226TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
227 target_fabric_mappedlun_attrs);
228
229/* End of tfc_tpg_mappedlun_cit */
230
231/* Start of tfc_tpg_mappedlun_port_cit */
232
233static struct config_group *target_core_mappedlun_stat_mkdir(
234 struct config_group *group,
235 const char *name)
236{
237 return ERR_PTR(-ENOSYS);
238}
239
240static void target_core_mappedlun_stat_rmdir(
241 struct config_group *group,
242 struct config_item *item)
243{
244 return;
245}
246
247static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
248 .make_group = target_core_mappedlun_stat_mkdir,
249 .drop_item = target_core_mappedlun_stat_rmdir,
250};
251
252TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
253 NULL);
254
255/* End of tfc_tpg_mappedlun_port_cit */
256
257TF_CIT_SETUP_DRV(tpg_nacl_attrib, NULL, NULL);
258TF_CIT_SETUP_DRV(tpg_nacl_auth, NULL, NULL);
259TF_CIT_SETUP_DRV(tpg_nacl_param, NULL, NULL);
260
261/* Start of tfc_tpg_nacl_base_cit */
262
263static struct config_group *target_fabric_make_mappedlun(
264 struct config_group *group,
265 const char *name)
266{
267 struct se_node_acl *se_nacl = container_of(group,
268 struct se_node_acl, acl_group);
269 struct se_portal_group *se_tpg = se_nacl->se_tpg;
270 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
271 struct se_lun_acl *lacl = NULL;
272 char *buf;
273 unsigned long long mapped_lun;
274 int ret = 0;
275
276 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
277 if (!buf) {
278 pr_err("Unable to allocate memory for name buf\n");
279 return ERR_PTR(-ENOMEM);
280 }
281 snprintf(buf, strlen(name) + 1, "%s", name);
282 /*
283 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
284 */
285 if (strstr(buf, "lun_") != buf) {
286 pr_err("Unable to locate \"lun_\" from buf: %s"
287 " name: %s\n", buf, name);
288 ret = -EINVAL;
289 goto out;
290 }
291 /*
292 * Determine the Mapped LUN value. This is what the SCSI Initiator
293 * Port will actually see.
294 */
295 ret = kstrtoull(buf + 4, 0, &mapped_lun);
296 if (ret)
297 goto out;
298
299 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
300 mapped_lun, &ret);
301 if (!lacl) {
302 ret = -EINVAL;
303 goto out;
304 }
305
306 config_group_init_type_name(&lacl->se_lun_group, name,
307 &tf->tf_tpg_mappedlun_cit);
308
309 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
310 "statistics", &tf->tf_tpg_mappedlun_stat_cit);
311 configfs_add_default_group(&lacl->ml_stat_grps.stat_group,
312 &lacl->se_lun_group);
313
314 target_stat_setup_mappedlun_default_groups(lacl);
315
316 kfree(buf);
317 return &lacl->se_lun_group;
318out:
319 kfree(lacl);
320 kfree(buf);
321 return ERR_PTR(ret);
322}
323
324static void target_fabric_drop_mappedlun(
325 struct config_group *group,
326 struct config_item *item)
327{
328 struct se_lun_acl *lacl = container_of(to_config_group(item),
329 struct se_lun_acl, se_lun_group);
330
331 configfs_remove_default_groups(&lacl->ml_stat_grps.stat_group);
332 configfs_remove_default_groups(&lacl->se_lun_group);
333
334 config_item_put(item);
335}
336
337static void target_fabric_nacl_base_release(struct config_item *item)
338{
339 struct se_node_acl *se_nacl = container_of(to_config_group(item),
340 struct se_node_acl, acl_group);
341
342 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
343 core_tpg_del_initiator_node_acl(se_nacl);
344}
345
346static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
347 .release = target_fabric_nacl_base_release,
348};
349
350static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
351 .make_group = target_fabric_make_mappedlun,
352 .drop_item = target_fabric_drop_mappedlun,
353};
354
355TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
356 &target_fabric_nacl_base_group_ops);
357
358/* End of tfc_tpg_nacl_base_cit */
359
360/* Start of tfc_node_fabric_stats_cit */
361/*
362 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
363 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
364 */
365TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
366
367/* End of tfc_wwn_fabric_stats_cit */
368
369/* Start of tfc_tpg_nacl_cit */
370
371static struct config_group *target_fabric_make_nodeacl(
372 struct config_group *group,
373 const char *name)
374{
375 struct se_portal_group *se_tpg = container_of(group,
376 struct se_portal_group, tpg_acl_group);
377 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
378 struct se_node_acl *se_nacl;
379
380 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
381 if (IS_ERR(se_nacl))
382 return ERR_CAST(se_nacl);
383
384 config_group_init_type_name(&se_nacl->acl_group, name,
385 &tf->tf_tpg_nacl_base_cit);
386
387 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
388 &tf->tf_tpg_nacl_attrib_cit);
389 configfs_add_default_group(&se_nacl->acl_attrib_group,
390 &se_nacl->acl_group);
391
392 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
393 &tf->tf_tpg_nacl_auth_cit);
394 configfs_add_default_group(&se_nacl->acl_auth_group,
395 &se_nacl->acl_group);
396
397 config_group_init_type_name(&se_nacl->acl_param_group, "param",
398 &tf->tf_tpg_nacl_param_cit);
399 configfs_add_default_group(&se_nacl->acl_param_group,
400 &se_nacl->acl_group);
401
402 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
403 "fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
404 configfs_add_default_group(&se_nacl->acl_fabric_stat_group,
405 &se_nacl->acl_group);
406
407 if (tf->tf_ops->fabric_init_nodeacl) {
408 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
409 if (ret) {
410 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
411 core_tpg_del_initiator_node_acl(se_nacl);
412 return ERR_PTR(ret);
413 }
414 }
415
416 return &se_nacl->acl_group;
417}
418
419static void target_fabric_drop_nodeacl(
420 struct config_group *group,
421 struct config_item *item)
422{
423 struct se_node_acl *se_nacl = container_of(to_config_group(item),
424 struct se_node_acl, acl_group);
425
426 configfs_remove_default_groups(&se_nacl->acl_group);
427
428 /*
429 * struct se_node_acl free is done in target_fabric_nacl_base_release()
430 */
431 config_item_put(item);
432}
433
434static struct configfs_group_operations target_fabric_nacl_group_ops = {
435 .make_group = target_fabric_make_nodeacl,
436 .drop_item = target_fabric_drop_nodeacl,
437};
438
439TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
440
441/* End of tfc_tpg_nacl_cit */
442
443/* Start of tfc_tpg_np_base_cit */
444
445static void target_fabric_np_base_release(struct config_item *item)
446{
447 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
448 struct se_tpg_np, tpg_np_group);
449 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
450 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
451
452 tf->tf_ops->fabric_drop_np(se_tpg_np);
453}
454
455static struct configfs_item_operations target_fabric_np_base_item_ops = {
456 .release = target_fabric_np_base_release,
457};
458
459TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
460
461/* End of tfc_tpg_np_base_cit */
462
463/* Start of tfc_tpg_np_cit */
464
465static struct config_group *target_fabric_make_np(
466 struct config_group *group,
467 const char *name)
468{
469 struct se_portal_group *se_tpg = container_of(group,
470 struct se_portal_group, tpg_np_group);
471 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
472 struct se_tpg_np *se_tpg_np;
473
474 if (!tf->tf_ops->fabric_make_np) {
475 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
476 return ERR_PTR(-ENOSYS);
477 }
478
479 se_tpg_np = tf->tf_ops->fabric_make_np(se_tpg, group, name);
480 if (!se_tpg_np || IS_ERR(se_tpg_np))
481 return ERR_PTR(-EINVAL);
482
483 se_tpg_np->tpg_np_parent = se_tpg;
484 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
485 &tf->tf_tpg_np_base_cit);
486
487 return &se_tpg_np->tpg_np_group;
488}
489
490static void target_fabric_drop_np(
491 struct config_group *group,
492 struct config_item *item)
493{
494 /*
495 * struct se_tpg_np is released via target_fabric_np_base_release()
496 */
497 config_item_put(item);
498}
499
500static struct configfs_group_operations target_fabric_np_group_ops = {
501 .make_group = &target_fabric_make_np,
502 .drop_item = &target_fabric_drop_np,
503};
504
505TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
506
507/* End of tfc_tpg_np_cit */
508
509/* Start of tfc_tpg_port_cit */
510
511static struct se_lun *item_to_lun(struct config_item *item)
512{
513 return container_of(to_config_group(item), struct se_lun,
514 lun_group);
515}
516
517static ssize_t target_fabric_port_alua_tg_pt_gp_show(struct config_item *item,
518 char *page)
519{
520 struct se_lun *lun = item_to_lun(item);
521
522 if (!lun || !lun->lun_se_dev)
523 return -ENODEV;
524
525 return core_alua_show_tg_pt_gp_info(lun, page);
526}
527
528static ssize_t target_fabric_port_alua_tg_pt_gp_store(struct config_item *item,
529 const char *page, size_t count)
530{
531 struct se_lun *lun = item_to_lun(item);
532
533 if (!lun || !lun->lun_se_dev)
534 return -ENODEV;
535
536 return core_alua_store_tg_pt_gp_info(lun, page, count);
537}
538
539static ssize_t target_fabric_port_alua_tg_pt_offline_show(
540 struct config_item *item, char *page)
541{
542 struct se_lun *lun = item_to_lun(item);
543
544 if (!lun || !lun->lun_se_dev)
545 return -ENODEV;
546
547 return core_alua_show_offline_bit(lun, page);
548}
549
550static ssize_t target_fabric_port_alua_tg_pt_offline_store(
551 struct config_item *item, const char *page, size_t count)
552{
553 struct se_lun *lun = item_to_lun(item);
554
555 if (!lun || !lun->lun_se_dev)
556 return -ENODEV;
557
558 return core_alua_store_offline_bit(lun, page, count);
559}
560
561static ssize_t target_fabric_port_alua_tg_pt_status_show(
562 struct config_item *item, char *page)
563{
564 struct se_lun *lun = item_to_lun(item);
565
566 if (!lun || !lun->lun_se_dev)
567 return -ENODEV;
568
569 return core_alua_show_secondary_status(lun, page);
570}
571
572static ssize_t target_fabric_port_alua_tg_pt_status_store(
573 struct config_item *item, const char *page, size_t count)
574{
575 struct se_lun *lun = item_to_lun(item);
576
577 if (!lun || !lun->lun_se_dev)
578 return -ENODEV;
579
580 return core_alua_store_secondary_status(lun, page, count);
581}
582
583static ssize_t target_fabric_port_alua_tg_pt_write_md_show(
584 struct config_item *item, char *page)
585{
586 struct se_lun *lun = item_to_lun(item);
587
588 if (!lun || !lun->lun_se_dev)
589 return -ENODEV;
590
591 return core_alua_show_secondary_write_metadata(lun, page);
592}
593
594static ssize_t target_fabric_port_alua_tg_pt_write_md_store(
595 struct config_item *item, const char *page, size_t count)
596{
597 struct se_lun *lun = item_to_lun(item);
598
599 if (!lun || !lun->lun_se_dev)
600 return -ENODEV;
601
602 return core_alua_store_secondary_write_metadata(lun, page, count);
603}
604
605CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_gp);
606CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_offline);
607CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_status);
608CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_write_md);
609
610static struct configfs_attribute *target_fabric_port_attrs[] = {
611 &target_fabric_port_attr_alua_tg_pt_gp,
612 &target_fabric_port_attr_alua_tg_pt_offline,
613 &target_fabric_port_attr_alua_tg_pt_status,
614 &target_fabric_port_attr_alua_tg_pt_write_md,
615 NULL,
616};
617
618static int target_fabric_port_link(
619 struct config_item *lun_ci,
620 struct config_item *se_dev_ci)
621{
622 struct config_item *tpg_ci;
623 struct se_lun *lun = container_of(to_config_group(lun_ci),
624 struct se_lun, lun_group);
625 struct se_portal_group *se_tpg;
626 struct se_device *dev =
627 container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
628 struct target_fabric_configfs *tf;
629 int ret;
630
631 if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
632 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
633 " %p to struct se_device: %p\n", se_dev_ci, dev);
634 return -EFAULT;
635 }
636
637 if (!(dev->dev_flags & DF_CONFIGURED)) {
638 pr_err("se_device not configured yet, cannot port link\n");
639 return -ENODEV;
640 }
641
642 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
643 se_tpg = container_of(to_config_group(tpg_ci),
644 struct se_portal_group, tpg_group);
645 tf = se_tpg->se_tpg_wwn->wwn_tf;
646
647 if (lun->lun_se_dev != NULL) {
648 pr_err("Port Symlink already exists\n");
649 return -EEXIST;
650 }
651
652 ret = core_dev_add_lun(se_tpg, dev, lun);
653 if (ret) {
654 pr_err("core_dev_add_lun() failed: %d\n", ret);
655 goto out;
656 }
657
658 if (tf->tf_ops->fabric_post_link) {
659 /*
660 * Call the optional fabric_post_link() to allow a
661 * fabric module to setup any additional state once
662 * core_dev_add_lun() has been called..
663 */
664 tf->tf_ops->fabric_post_link(se_tpg, lun);
665 }
666
667 return 0;
668out:
669 return ret;
670}
671
672static void target_fabric_port_unlink(
673 struct config_item *lun_ci,
674 struct config_item *se_dev_ci)
675{
676 struct se_lun *lun = container_of(to_config_group(lun_ci),
677 struct se_lun, lun_group);
678 struct se_portal_group *se_tpg = lun->lun_tpg;
679 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
680
681 if (tf->tf_ops->fabric_pre_unlink) {
682 /*
683 * Call the optional fabric_pre_unlink() to allow a
684 * fabric module to release any additional stat before
685 * core_dev_del_lun() is called.
686 */
687 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
688 }
689
690 core_dev_del_lun(se_tpg, lun);
691}
692
693static void target_fabric_port_release(struct config_item *item)
694{
695 struct se_lun *lun = container_of(to_config_group(item),
696 struct se_lun, lun_group);
697
698 kfree_rcu(lun, rcu_head);
699}
700
701static struct configfs_item_operations target_fabric_port_item_ops = {
702 .release = target_fabric_port_release,
703 .allow_link = target_fabric_port_link,
704 .drop_link = target_fabric_port_unlink,
705};
706
707TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
708
709/* End of tfc_tpg_port_cit */
710
711/* Start of tfc_tpg_port_stat_cit */
712
713static struct config_group *target_core_port_stat_mkdir(
714 struct config_group *group,
715 const char *name)
716{
717 return ERR_PTR(-ENOSYS);
718}
719
720static void target_core_port_stat_rmdir(
721 struct config_group *group,
722 struct config_item *item)
723{
724 return;
725}
726
727static struct configfs_group_operations target_fabric_port_stat_group_ops = {
728 .make_group = target_core_port_stat_mkdir,
729 .drop_item = target_core_port_stat_rmdir,
730};
731
732TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
733
734/* End of tfc_tpg_port_stat_cit */
735
736/* Start of tfc_tpg_lun_cit */
737
738static struct config_group *target_fabric_make_lun(
739 struct config_group *group,
740 const char *name)
741{
742 struct se_lun *lun;
743 struct se_portal_group *se_tpg = container_of(group,
744 struct se_portal_group, tpg_lun_group);
745 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
746 unsigned long long unpacked_lun;
747 int errno;
748
749 if (strstr(name, "lun_") != name) {
750 pr_err("Unable to locate \'_\" in"
751 " \"lun_$LUN_NUMBER\"\n");
752 return ERR_PTR(-EINVAL);
753 }
754 errno = kstrtoull(name + 4, 0, &unpacked_lun);
755 if (errno)
756 return ERR_PTR(errno);
757
758 lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
759 if (IS_ERR(lun))
760 return ERR_CAST(lun);
761
762 config_group_init_type_name(&lun->lun_group, name,
763 &tf->tf_tpg_port_cit);
764
765 config_group_init_type_name(&lun->port_stat_grps.stat_group,
766 "statistics", &tf->tf_tpg_port_stat_cit);
767 configfs_add_default_group(&lun->port_stat_grps.stat_group,
768 &lun->lun_group);
769
770 target_stat_setup_port_default_groups(lun);
771
772 return &lun->lun_group;
773}
774
775static void target_fabric_drop_lun(
776 struct config_group *group,
777 struct config_item *item)
778{
779 struct se_lun *lun = container_of(to_config_group(item),
780 struct se_lun, lun_group);
781
782 configfs_remove_default_groups(&lun->port_stat_grps.stat_group);
783 configfs_remove_default_groups(&lun->lun_group);
784
785 config_item_put(item);
786}
787
788static struct configfs_group_operations target_fabric_lun_group_ops = {
789 .make_group = &target_fabric_make_lun,
790 .drop_item = &target_fabric_drop_lun,
791};
792
793TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
794
795/* End of tfc_tpg_lun_cit */
796
797TF_CIT_SETUP_DRV(tpg_attrib, NULL, NULL);
798TF_CIT_SETUP_DRV(tpg_auth, NULL, NULL);
799TF_CIT_SETUP_DRV(tpg_param, NULL, NULL);
800
801/* Start of tfc_tpg_base_cit */
802
803static void target_fabric_tpg_release(struct config_item *item)
804{
805 struct se_portal_group *se_tpg = container_of(to_config_group(item),
806 struct se_portal_group, tpg_group);
807 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
808 struct target_fabric_configfs *tf = wwn->wwn_tf;
809
810 tf->tf_ops->fabric_drop_tpg(se_tpg);
811}
812
813static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
814 .release = target_fabric_tpg_release,
815};
816
817TF_CIT_SETUP_DRV(tpg_base, &target_fabric_tpg_base_item_ops, NULL);
818
819/* End of tfc_tpg_base_cit */
820
821/* Start of tfc_tpg_cit */
822
823static struct config_group *target_fabric_make_tpg(
824 struct config_group *group,
825 const char *name)
826{
827 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
828 struct target_fabric_configfs *tf = wwn->wwn_tf;
829 struct se_portal_group *se_tpg;
830
831 if (!tf->tf_ops->fabric_make_tpg) {
832 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
833 return ERR_PTR(-ENOSYS);
834 }
835
836 se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
837 if (!se_tpg || IS_ERR(se_tpg))
838 return ERR_PTR(-EINVAL);
839
840 config_group_init_type_name(&se_tpg->tpg_group, name,
841 &tf->tf_tpg_base_cit);
842
843 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
844 &tf->tf_tpg_lun_cit);
845 configfs_add_default_group(&se_tpg->tpg_lun_group,
846 &se_tpg->tpg_group);
847
848 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
849 &tf->tf_tpg_np_cit);
850 configfs_add_default_group(&se_tpg->tpg_np_group,
851 &se_tpg->tpg_group);
852
853 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
854 &tf->tf_tpg_nacl_cit);
855 configfs_add_default_group(&se_tpg->tpg_acl_group,
856 &se_tpg->tpg_group);
857
858 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
859 &tf->tf_tpg_attrib_cit);
860 configfs_add_default_group(&se_tpg->tpg_attrib_group,
861 &se_tpg->tpg_group);
862
863 config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
864 &tf->tf_tpg_auth_cit);
865 configfs_add_default_group(&se_tpg->tpg_auth_group,
866 &se_tpg->tpg_group);
867
868 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
869 &tf->tf_tpg_param_cit);
870 configfs_add_default_group(&se_tpg->tpg_param_group,
871 &se_tpg->tpg_group);
872
873 return &se_tpg->tpg_group;
874}
875
876static void target_fabric_drop_tpg(
877 struct config_group *group,
878 struct config_item *item)
879{
880 struct se_portal_group *se_tpg = container_of(to_config_group(item),
881 struct se_portal_group, tpg_group);
882
883 configfs_remove_default_groups(&se_tpg->tpg_group);
884 config_item_put(item);
885}
886
887static void target_fabric_release_wwn(struct config_item *item)
888{
889 struct se_wwn *wwn = container_of(to_config_group(item),
890 struct se_wwn, wwn_group);
891 struct target_fabric_configfs *tf = wwn->wwn_tf;
892
893 configfs_remove_default_groups(&wwn->fabric_stat_group);
894 tf->tf_ops->fabric_drop_wwn(wwn);
895}
896
897static struct configfs_item_operations target_fabric_tpg_item_ops = {
898 .release = target_fabric_release_wwn,
899};
900
901static struct configfs_group_operations target_fabric_tpg_group_ops = {
902 .make_group = target_fabric_make_tpg,
903 .drop_item = target_fabric_drop_tpg,
904};
905
906TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
907 NULL);
908
909/* End of tfc_tpg_cit */
910
911/* Start of tfc_wwn_fabric_stats_cit */
912/*
913 * This is used as a placeholder for struct se_wwn->fabric_stat_group
914 * to allow fabrics access to ->fabric_stat_group->default_groups[]
915 */
916TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
917
918/* End of tfc_wwn_fabric_stats_cit */
919
920/* Start of tfc_wwn_cit */
921
922static struct config_group *target_fabric_make_wwn(
923 struct config_group *group,
924 const char *name)
925{
926 struct target_fabric_configfs *tf = container_of(group,
927 struct target_fabric_configfs, tf_group);
928 struct se_wwn *wwn;
929
930 if (!tf->tf_ops->fabric_make_wwn) {
931 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
932 return ERR_PTR(-ENOSYS);
933 }
934
935 wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
936 if (!wwn || IS_ERR(wwn))
937 return ERR_PTR(-EINVAL);
938
939 wwn->wwn_tf = tf;
940
941 config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
942
943 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
944 &tf->tf_wwn_fabric_stats_cit);
945 configfs_add_default_group(&wwn->fabric_stat_group, &wwn->wwn_group);
946
947 if (tf->tf_ops->add_wwn_groups)
948 tf->tf_ops->add_wwn_groups(wwn);
949 return &wwn->wwn_group;
950}
951
952static void target_fabric_drop_wwn(
953 struct config_group *group,
954 struct config_item *item)
955{
956 struct se_wwn *wwn = container_of(to_config_group(item),
957 struct se_wwn, wwn_group);
958
959 configfs_remove_default_groups(&wwn->wwn_group);
960 config_item_put(item);
961}
962
963static struct configfs_group_operations target_fabric_wwn_group_ops = {
964 .make_group = target_fabric_make_wwn,
965 .drop_item = target_fabric_drop_wwn,
966};
967
968TF_CIT_SETUP_DRV(wwn, NULL, &target_fabric_wwn_group_ops);
969TF_CIT_SETUP_DRV(discovery, NULL, NULL);
970
971int target_fabric_setup_cits(struct target_fabric_configfs *tf)
972{
973 target_fabric_setup_discovery_cit(tf);
974 target_fabric_setup_wwn_cit(tf);
975 target_fabric_setup_wwn_fabric_stats_cit(tf);
976 target_fabric_setup_tpg_cit(tf);
977 target_fabric_setup_tpg_base_cit(tf);
978 target_fabric_setup_tpg_port_cit(tf);
979 target_fabric_setup_tpg_port_stat_cit(tf);
980 target_fabric_setup_tpg_lun_cit(tf);
981 target_fabric_setup_tpg_np_cit(tf);
982 target_fabric_setup_tpg_np_base_cit(tf);
983 target_fabric_setup_tpg_attrib_cit(tf);
984 target_fabric_setup_tpg_auth_cit(tf);
985 target_fabric_setup_tpg_param_cit(tf);
986 target_fabric_setup_tpg_nacl_cit(tf);
987 target_fabric_setup_tpg_nacl_base_cit(tf);
988 target_fabric_setup_tpg_nacl_attrib_cit(tf);
989 target_fabric_setup_tpg_nacl_auth_cit(tf);
990 target_fabric_setup_tpg_nacl_param_cit(tf);
991 target_fabric_setup_tpg_nacl_stat_cit(tf);
992 target_fabric_setup_tpg_mappedlun_cit(tf);
993 target_fabric_setup_tpg_mappedlun_stat_cit(tf);
994
995 return 0;
996}