1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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
68static struct configfs_item_operations target_fabric_port_item_ops;
69
70
71
72static int target_fabric_mappedlun_link(
73 struct config_item *lun_acl_ci,
74 struct config_item *lun_ci)
75{
76 struct se_dev_entry *deve;
77 struct se_lun *lun;
78 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
79 struct se_lun_acl, se_lun_group);
80 struct se_portal_group *se_tpg;
81 struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
82 bool lun_access_ro;
83
84 if (!lun_ci->ci_type ||
85 lun_ci->ci_type->ct_item_ops != &target_fabric_port_item_ops) {
86 pr_err("Bad lun_ci, not a valid lun_ci pointer: %p\n", lun_ci);
87 return -EFAULT;
88 }
89 lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
90
91
92
93
94 if (!lun->lun_se_dev) {
95 pr_err("Source se_lun->lun_se_dev does not exist\n");
96 return -EINVAL;
97 }
98 if (lun->lun_shutdown) {
99 pr_err("Unable to create mappedlun symlink because"
100 " lun->lun_shutdown=true\n");
101 return -EINVAL;
102 }
103 se_tpg = lun->lun_tpg;
104
105 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
106 tpg_ci = &nacl_ci->ci_group->cg_item;
107 wwn_ci = &tpg_ci->ci_group->cg_item;
108 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
109 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
110
111
112
113 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
114 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
115 config_item_name(wwn_ci));
116 return -EINVAL;
117 }
118 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
119 pr_err("Illegal Initiator ACL Symlink outside of %s"
120 " TPGT: %s\n", config_item_name(wwn_ci),
121 config_item_name(tpg_ci));
122 return -EINVAL;
123 }
124
125
126
127
128
129
130 rcu_read_lock();
131 deve = target_nacl_find_deve(lacl->se_lun_nacl, lacl->mapped_lun);
132 if (deve)
133 lun_access_ro = deve->lun_access_ro;
134 else
135 lun_access_ro =
136 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
137 se_tpg)) ? true : false;
138 rcu_read_unlock();
139
140
141
142
143
144
145 return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access_ro);
146}
147
148static void target_fabric_mappedlun_unlink(
149 struct config_item *lun_acl_ci,
150 struct config_item *lun_ci)
151{
152 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
153 struct se_lun_acl, se_lun_group);
154 struct se_lun *lun = container_of(to_config_group(lun_ci),
155 struct se_lun, lun_group);
156
157 core_dev_del_initiator_node_lun_acl(lun, lacl);
158}
159
160static struct se_lun_acl *item_to_lun_acl(struct config_item *item)
161{
162 return container_of(to_config_group(item), struct se_lun_acl,
163 se_lun_group);
164}
165
166static ssize_t target_fabric_mappedlun_write_protect_show(
167 struct config_item *item, char *page)
168{
169 struct se_lun_acl *lacl = item_to_lun_acl(item);
170 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
171 struct se_dev_entry *deve;
172 ssize_t len = 0;
173
174 rcu_read_lock();
175 deve = target_nacl_find_deve(se_nacl, lacl->mapped_lun);
176 if (deve) {
177 len = sprintf(page, "%d\n", deve->lun_access_ro);
178 }
179 rcu_read_unlock();
180
181 return len;
182}
183
184static ssize_t target_fabric_mappedlun_write_protect_store(
185 struct config_item *item, const char *page, size_t count)
186{
187 struct se_lun_acl *lacl = item_to_lun_acl(item);
188 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
189 struct se_portal_group *se_tpg = se_nacl->se_tpg;
190 unsigned long wp;
191 int ret;
192
193 ret = kstrtoul(page, 0, &wp);
194 if (ret)
195 return ret;
196
197 if ((wp != 1) && (wp != 0))
198 return -EINVAL;
199
200
201 core_update_device_list_access(lacl->mapped_lun, wp, lacl->se_lun_nacl);
202
203 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
204 " Mapped LUN: %llu Write Protect bit to %s\n",
205 se_tpg->se_tpg_tfo->get_fabric_name(),
206 se_nacl->initiatorname, lacl->mapped_lun, (wp) ? "ON" : "OFF");
207
208 return count;
209
210}
211
212CONFIGFS_ATTR(target_fabric_mappedlun_, write_protect);
213
214static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
215 &target_fabric_mappedlun_attr_write_protect,
216 NULL,
217};
218
219static 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
228static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
229 .release = target_fabric_mappedlun_release,
230 .allow_link = target_fabric_mappedlun_link,
231 .drop_link = target_fabric_mappedlun_unlink,
232};
233
234TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
235 target_fabric_mappedlun_attrs);
236
237
238
239
240
241static struct config_group *target_core_mappedlun_stat_mkdir(
242 struct config_group *group,
243 const char *name)
244{
245 return ERR_PTR(-ENOSYS);
246}
247
248static void target_core_mappedlun_stat_rmdir(
249 struct config_group *group,
250 struct config_item *item)
251{
252 return;
253}
254
255static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
256 .make_group = target_core_mappedlun_stat_mkdir,
257 .drop_item = target_core_mappedlun_stat_rmdir,
258};
259
260TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
261 NULL);
262
263
264
265TF_CIT_SETUP_DRV(tpg_nacl_attrib, NULL, NULL);
266TF_CIT_SETUP_DRV(tpg_nacl_auth, NULL, NULL);
267TF_CIT_SETUP_DRV(tpg_nacl_param, NULL, NULL);
268
269
270
271static struct config_group *target_fabric_make_mappedlun(
272 struct config_group *group,
273 const char *name)
274{
275 struct se_node_acl *se_nacl = container_of(group,
276 struct se_node_acl, acl_group);
277 struct se_portal_group *se_tpg = se_nacl->se_tpg;
278 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
279 struct se_lun_acl *lacl = NULL;
280 char *buf;
281 unsigned long long mapped_lun;
282 int ret = 0;
283
284 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
285 if (!buf) {
286 pr_err("Unable to allocate memory for name buf\n");
287 return ERR_PTR(-ENOMEM);
288 }
289 snprintf(buf, strlen(name) + 1, "%s", name);
290
291
292
293 if (strstr(buf, "lun_") != buf) {
294 pr_err("Unable to locate \"lun_\" from buf: %s"
295 " name: %s\n", buf, name);
296 ret = -EINVAL;
297 goto out;
298 }
299
300
301
302
303 ret = kstrtoull(buf + 4, 0, &mapped_lun);
304 if (ret)
305 goto out;
306
307 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
308 mapped_lun, &ret);
309 if (!lacl) {
310 ret = -EINVAL;
311 goto out;
312 }
313
314 config_group_init_type_name(&lacl->se_lun_group, name,
315 &tf->tf_tpg_mappedlun_cit);
316
317 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
318 "statistics", &tf->tf_tpg_mappedlun_stat_cit);
319 configfs_add_default_group(&lacl->ml_stat_grps.stat_group,
320 &lacl->se_lun_group);
321
322 target_stat_setup_mappedlun_default_groups(lacl);
323
324 kfree(buf);
325 return &lacl->se_lun_group;
326out:
327 kfree(lacl);
328 kfree(buf);
329 return ERR_PTR(ret);
330}
331
332static void target_fabric_drop_mappedlun(
333 struct config_group *group,
334 struct config_item *item)
335{
336 struct se_lun_acl *lacl = container_of(to_config_group(item),
337 struct se_lun_acl, se_lun_group);
338
339 configfs_remove_default_groups(&lacl->ml_stat_grps.stat_group);
340 configfs_remove_default_groups(&lacl->se_lun_group);
341
342 config_item_put(item);
343}
344
345static void target_fabric_nacl_base_release(struct config_item *item)
346{
347 struct se_node_acl *se_nacl = container_of(to_config_group(item),
348 struct se_node_acl, acl_group);
349
350 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
351 core_tpg_del_initiator_node_acl(se_nacl);
352}
353
354static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
355 .release = target_fabric_nacl_base_release,
356};
357
358static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
359 .make_group = target_fabric_make_mappedlun,
360 .drop_item = target_fabric_drop_mappedlun,
361};
362
363TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
364 &target_fabric_nacl_base_group_ops);
365
366
367
368
369
370
371
372
373TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
374
375
376
377
378
379static struct config_group *target_fabric_make_nodeacl(
380 struct config_group *group,
381 const char *name)
382{
383 struct se_portal_group *se_tpg = container_of(group,
384 struct se_portal_group, tpg_acl_group);
385 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
386 struct se_node_acl *se_nacl;
387
388 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
389 if (IS_ERR(se_nacl))
390 return ERR_CAST(se_nacl);
391
392 config_group_init_type_name(&se_nacl->acl_group, name,
393 &tf->tf_tpg_nacl_base_cit);
394
395 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
396 &tf->tf_tpg_nacl_attrib_cit);
397 configfs_add_default_group(&se_nacl->acl_attrib_group,
398 &se_nacl->acl_group);
399
400 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
401 &tf->tf_tpg_nacl_auth_cit);
402 configfs_add_default_group(&se_nacl->acl_auth_group,
403 &se_nacl->acl_group);
404
405 config_group_init_type_name(&se_nacl->acl_param_group, "param",
406 &tf->tf_tpg_nacl_param_cit);
407 configfs_add_default_group(&se_nacl->acl_param_group,
408 &se_nacl->acl_group);
409
410 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
411 "fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
412 configfs_add_default_group(&se_nacl->acl_fabric_stat_group,
413 &se_nacl->acl_group);
414
415 if (tf->tf_ops->fabric_init_nodeacl) {
416 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
417 if (ret) {
418 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
419 core_tpg_del_initiator_node_acl(se_nacl);
420 return ERR_PTR(ret);
421 }
422 }
423
424 return &se_nacl->acl_group;
425}
426
427static void target_fabric_drop_nodeacl(
428 struct config_group *group,
429 struct config_item *item)
430{
431 struct se_node_acl *se_nacl = container_of(to_config_group(item),
432 struct se_node_acl, acl_group);
433
434 configfs_remove_default_groups(&se_nacl->acl_group);
435
436
437
438
439 config_item_put(item);
440}
441
442static struct configfs_group_operations target_fabric_nacl_group_ops = {
443 .make_group = target_fabric_make_nodeacl,
444 .drop_item = target_fabric_drop_nodeacl,
445};
446
447TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
448
449
450
451
452
453static void target_fabric_np_base_release(struct config_item *item)
454{
455 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
456 struct se_tpg_np, tpg_np_group);
457 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
458 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
459
460 tf->tf_ops->fabric_drop_np(se_tpg_np);
461}
462
463static struct configfs_item_operations target_fabric_np_base_item_ops = {
464 .release = target_fabric_np_base_release,
465};
466
467TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
468
469
470
471
472
473static struct config_group *target_fabric_make_np(
474 struct config_group *group,
475 const char *name)
476{
477 struct se_portal_group *se_tpg = container_of(group,
478 struct se_portal_group, tpg_np_group);
479 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
480 struct se_tpg_np *se_tpg_np;
481
482 if (!tf->tf_ops->fabric_make_np) {
483 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
484 return ERR_PTR(-ENOSYS);
485 }
486
487 se_tpg_np = tf->tf_ops->fabric_make_np(se_tpg, group, name);
488 if (!se_tpg_np || IS_ERR(se_tpg_np))
489 return ERR_PTR(-EINVAL);
490
491 se_tpg_np->tpg_np_parent = se_tpg;
492 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
493 &tf->tf_tpg_np_base_cit);
494
495 return &se_tpg_np->tpg_np_group;
496}
497
498static void target_fabric_drop_np(
499 struct config_group *group,
500 struct config_item *item)
501{
502
503
504
505 config_item_put(item);
506}
507
508static struct configfs_group_operations target_fabric_np_group_ops = {
509 .make_group = &target_fabric_make_np,
510 .drop_item = &target_fabric_drop_np,
511};
512
513TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
514
515
516
517
518
519static struct se_lun *item_to_lun(struct config_item *item)
520{
521 return container_of(to_config_group(item), struct se_lun,
522 lun_group);
523}
524
525static ssize_t target_fabric_port_alua_tg_pt_gp_show(struct config_item *item,
526 char *page)
527{
528 struct se_lun *lun = item_to_lun(item);
529
530 if (!lun || !lun->lun_se_dev)
531 return -ENODEV;
532
533 return core_alua_show_tg_pt_gp_info(lun, page);
534}
535
536static ssize_t target_fabric_port_alua_tg_pt_gp_store(struct config_item *item,
537 const char *page, size_t count)
538{
539 struct se_lun *lun = item_to_lun(item);
540
541 if (!lun || !lun->lun_se_dev)
542 return -ENODEV;
543
544 return core_alua_store_tg_pt_gp_info(lun, page, count);
545}
546
547static ssize_t target_fabric_port_alua_tg_pt_offline_show(
548 struct config_item *item, char *page)
549{
550 struct se_lun *lun = item_to_lun(item);
551
552 if (!lun || !lun->lun_se_dev)
553 return -ENODEV;
554
555 return core_alua_show_offline_bit(lun, page);
556}
557
558static ssize_t target_fabric_port_alua_tg_pt_offline_store(
559 struct config_item *item, const char *page, size_t count)
560{
561 struct se_lun *lun = item_to_lun(item);
562
563 if (!lun || !lun->lun_se_dev)
564 return -ENODEV;
565
566 return core_alua_store_offline_bit(lun, page, count);
567}
568
569static ssize_t target_fabric_port_alua_tg_pt_status_show(
570 struct config_item *item, char *page)
571{
572 struct se_lun *lun = item_to_lun(item);
573
574 if (!lun || !lun->lun_se_dev)
575 return -ENODEV;
576
577 return core_alua_show_secondary_status(lun, page);
578}
579
580static ssize_t target_fabric_port_alua_tg_pt_status_store(
581 struct config_item *item, const char *page, size_t count)
582{
583 struct se_lun *lun = item_to_lun(item);
584
585 if (!lun || !lun->lun_se_dev)
586 return -ENODEV;
587
588 return core_alua_store_secondary_status(lun, page, count);
589}
590
591static ssize_t target_fabric_port_alua_tg_pt_write_md_show(
592 struct config_item *item, char *page)
593{
594 struct se_lun *lun = item_to_lun(item);
595
596 if (!lun || !lun->lun_se_dev)
597 return -ENODEV;
598
599 return core_alua_show_secondary_write_metadata(lun, page);
600}
601
602static ssize_t target_fabric_port_alua_tg_pt_write_md_store(
603 struct config_item *item, const char *page, size_t count)
604{
605 struct se_lun *lun = item_to_lun(item);
606
607 if (!lun || !lun->lun_se_dev)
608 return -ENODEV;
609
610 return core_alua_store_secondary_write_metadata(lun, page, count);
611}
612
613CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_gp);
614CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_offline);
615CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_status);
616CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_write_md);
617
618static struct configfs_attribute *target_fabric_port_attrs[] = {
619 &target_fabric_port_attr_alua_tg_pt_gp,
620 &target_fabric_port_attr_alua_tg_pt_offline,
621 &target_fabric_port_attr_alua_tg_pt_status,
622 &target_fabric_port_attr_alua_tg_pt_write_md,
623 NULL,
624};
625
626static int target_fabric_port_link(
627 struct config_item *lun_ci,
628 struct config_item *se_dev_ci)
629{
630 struct config_item *tpg_ci;
631 struct se_lun *lun = container_of(to_config_group(lun_ci),
632 struct se_lun, lun_group);
633 struct se_portal_group *se_tpg;
634 struct se_device *dev;
635 struct target_fabric_configfs *tf;
636 int ret;
637
638 if (!se_dev_ci->ci_type ||
639 se_dev_ci->ci_type->ct_item_ops != &target_core_dev_item_ops) {
640 pr_err("Bad se_dev_ci, not a valid se_dev_ci pointer: %p\n", se_dev_ci);
641 return -EFAULT;
642 }
643 dev = container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
644
645 if (!(dev->dev_flags & DF_CONFIGURED)) {
646 pr_err("se_device not configured yet, cannot port link\n");
647 return -ENODEV;
648 }
649
650 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
651 se_tpg = container_of(to_config_group(tpg_ci),
652 struct se_portal_group, tpg_group);
653 tf = se_tpg->se_tpg_wwn->wwn_tf;
654
655 if (lun->lun_se_dev != NULL) {
656 pr_err("Port Symlink already exists\n");
657 return -EEXIST;
658 }
659
660 ret = core_dev_add_lun(se_tpg, dev, lun);
661 if (ret) {
662 pr_err("core_dev_add_lun() failed: %d\n", ret);
663 goto out;
664 }
665
666 if (tf->tf_ops->fabric_post_link) {
667
668
669
670
671
672 tf->tf_ops->fabric_post_link(se_tpg, lun);
673 }
674
675 return 0;
676out:
677 return ret;
678}
679
680static void target_fabric_port_unlink(
681 struct config_item *lun_ci,
682 struct config_item *se_dev_ci)
683{
684 struct se_lun *lun = container_of(to_config_group(lun_ci),
685 struct se_lun, lun_group);
686 struct se_portal_group *se_tpg = lun->lun_tpg;
687 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
688
689 if (tf->tf_ops->fabric_pre_unlink) {
690
691
692
693
694
695 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
696 }
697
698 core_dev_del_lun(se_tpg, lun);
699}
700
701static void target_fabric_port_release(struct config_item *item)
702{
703 struct se_lun *lun = container_of(to_config_group(item),
704 struct se_lun, lun_group);
705
706 kfree_rcu(lun, rcu_head);
707}
708
709static struct configfs_item_operations target_fabric_port_item_ops = {
710 .release = target_fabric_port_release,
711 .allow_link = target_fabric_port_link,
712 .drop_link = target_fabric_port_unlink,
713};
714
715TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
716
717
718
719
720
721static struct config_group *target_core_port_stat_mkdir(
722 struct config_group *group,
723 const char *name)
724{
725 return ERR_PTR(-ENOSYS);
726}
727
728static void target_core_port_stat_rmdir(
729 struct config_group *group,
730 struct config_item *item)
731{
732 return;
733}
734
735static struct configfs_group_operations target_fabric_port_stat_group_ops = {
736 .make_group = target_core_port_stat_mkdir,
737 .drop_item = target_core_port_stat_rmdir,
738};
739
740TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
741
742
743
744
745
746static struct config_group *target_fabric_make_lun(
747 struct config_group *group,
748 const char *name)
749{
750 struct se_lun *lun;
751 struct se_portal_group *se_tpg = container_of(group,
752 struct se_portal_group, tpg_lun_group);
753 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
754 unsigned long long unpacked_lun;
755 int errno;
756
757 if (strstr(name, "lun_") != name) {
758 pr_err("Unable to locate \'_\" in"
759 " \"lun_$LUN_NUMBER\"\n");
760 return ERR_PTR(-EINVAL);
761 }
762 errno = kstrtoull(name + 4, 0, &unpacked_lun);
763 if (errno)
764 return ERR_PTR(errno);
765
766 lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
767 if (IS_ERR(lun))
768 return ERR_CAST(lun);
769
770 config_group_init_type_name(&lun->lun_group, name,
771 &tf->tf_tpg_port_cit);
772
773 config_group_init_type_name(&lun->port_stat_grps.stat_group,
774 "statistics", &tf->tf_tpg_port_stat_cit);
775 configfs_add_default_group(&lun->port_stat_grps.stat_group,
776 &lun->lun_group);
777
778 target_stat_setup_port_default_groups(lun);
779
780 return &lun->lun_group;
781}
782
783static void target_fabric_drop_lun(
784 struct config_group *group,
785 struct config_item *item)
786{
787 struct se_lun *lun = container_of(to_config_group(item),
788 struct se_lun, lun_group);
789
790 configfs_remove_default_groups(&lun->port_stat_grps.stat_group);
791 configfs_remove_default_groups(&lun->lun_group);
792
793 config_item_put(item);
794}
795
796static struct configfs_group_operations target_fabric_lun_group_ops = {
797 .make_group = &target_fabric_make_lun,
798 .drop_item = &target_fabric_drop_lun,
799};
800
801TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
802
803
804
805TF_CIT_SETUP_DRV(tpg_attrib, NULL, NULL);
806TF_CIT_SETUP_DRV(tpg_auth, NULL, NULL);
807TF_CIT_SETUP_DRV(tpg_param, NULL, NULL);
808
809
810
811static void target_fabric_tpg_release(struct config_item *item)
812{
813 struct se_portal_group *se_tpg = container_of(to_config_group(item),
814 struct se_portal_group, tpg_group);
815 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
816 struct target_fabric_configfs *tf = wwn->wwn_tf;
817
818 tf->tf_ops->fabric_drop_tpg(se_tpg);
819}
820
821static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
822 .release = target_fabric_tpg_release,
823};
824
825TF_CIT_SETUP_DRV(tpg_base, &target_fabric_tpg_base_item_ops, NULL);
826
827
828
829
830
831static struct config_group *target_fabric_make_tpg(
832 struct config_group *group,
833 const char *name)
834{
835 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
836 struct target_fabric_configfs *tf = wwn->wwn_tf;
837 struct se_portal_group *se_tpg;
838
839 if (!tf->tf_ops->fabric_make_tpg) {
840 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
841 return ERR_PTR(-ENOSYS);
842 }
843
844 se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
845 if (!se_tpg || IS_ERR(se_tpg))
846 return ERR_PTR(-EINVAL);
847
848 config_group_init_type_name(&se_tpg->tpg_group, name,
849 &tf->tf_tpg_base_cit);
850
851 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
852 &tf->tf_tpg_lun_cit);
853 configfs_add_default_group(&se_tpg->tpg_lun_group,
854 &se_tpg->tpg_group);
855
856 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
857 &tf->tf_tpg_np_cit);
858 configfs_add_default_group(&se_tpg->tpg_np_group,
859 &se_tpg->tpg_group);
860
861 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
862 &tf->tf_tpg_nacl_cit);
863 configfs_add_default_group(&se_tpg->tpg_acl_group,
864 &se_tpg->tpg_group);
865
866 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
867 &tf->tf_tpg_attrib_cit);
868 configfs_add_default_group(&se_tpg->tpg_attrib_group,
869 &se_tpg->tpg_group);
870
871 config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
872 &tf->tf_tpg_auth_cit);
873 configfs_add_default_group(&se_tpg->tpg_auth_group,
874 &se_tpg->tpg_group);
875
876 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
877 &tf->tf_tpg_param_cit);
878 configfs_add_default_group(&se_tpg->tpg_param_group,
879 &se_tpg->tpg_group);
880
881 return &se_tpg->tpg_group;
882}
883
884static void target_fabric_drop_tpg(
885 struct config_group *group,
886 struct config_item *item)
887{
888 struct se_portal_group *se_tpg = container_of(to_config_group(item),
889 struct se_portal_group, tpg_group);
890
891 configfs_remove_default_groups(&se_tpg->tpg_group);
892 config_item_put(item);
893}
894
895static void target_fabric_release_wwn(struct config_item *item)
896{
897 struct se_wwn *wwn = container_of(to_config_group(item),
898 struct se_wwn, wwn_group);
899 struct target_fabric_configfs *tf = wwn->wwn_tf;
900
901 configfs_remove_default_groups(&wwn->fabric_stat_group);
902 tf->tf_ops->fabric_drop_wwn(wwn);
903}
904
905static struct configfs_item_operations target_fabric_tpg_item_ops = {
906 .release = target_fabric_release_wwn,
907};
908
909static struct configfs_group_operations target_fabric_tpg_group_ops = {
910 .make_group = target_fabric_make_tpg,
911 .drop_item = target_fabric_drop_tpg,
912};
913
914TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
915 NULL);
916
917
918
919
920
921
922
923
924TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
925
926
927
928
929
930static struct config_group *target_fabric_make_wwn(
931 struct config_group *group,
932 const char *name)
933{
934 struct target_fabric_configfs *tf = container_of(group,
935 struct target_fabric_configfs, tf_group);
936 struct se_wwn *wwn;
937
938 if (!tf->tf_ops->fabric_make_wwn) {
939 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
940 return ERR_PTR(-ENOSYS);
941 }
942
943 wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
944 if (!wwn || IS_ERR(wwn))
945 return ERR_PTR(-EINVAL);
946
947 wwn->wwn_tf = tf;
948
949 config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
950
951 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
952 &tf->tf_wwn_fabric_stats_cit);
953 configfs_add_default_group(&wwn->fabric_stat_group, &wwn->wwn_group);
954
955 if (tf->tf_ops->add_wwn_groups)
956 tf->tf_ops->add_wwn_groups(wwn);
957 return &wwn->wwn_group;
958}
959
960static void target_fabric_drop_wwn(
961 struct config_group *group,
962 struct config_item *item)
963{
964 struct se_wwn *wwn = container_of(to_config_group(item),
965 struct se_wwn, wwn_group);
966
967 configfs_remove_default_groups(&wwn->wwn_group);
968 config_item_put(item);
969}
970
971static struct configfs_group_operations target_fabric_wwn_group_ops = {
972 .make_group = target_fabric_make_wwn,
973 .drop_item = target_fabric_drop_wwn,
974};
975
976TF_CIT_SETUP_DRV(wwn, NULL, &target_fabric_wwn_group_ops);
977TF_CIT_SETUP_DRV(discovery, NULL, NULL);
978
979int target_fabric_setup_cits(struct target_fabric_configfs *tf)
980{
981 target_fabric_setup_discovery_cit(tf);
982 target_fabric_setup_wwn_cit(tf);
983 target_fabric_setup_wwn_fabric_stats_cit(tf);
984 target_fabric_setup_tpg_cit(tf);
985 target_fabric_setup_tpg_base_cit(tf);
986 target_fabric_setup_tpg_port_cit(tf);
987 target_fabric_setup_tpg_port_stat_cit(tf);
988 target_fabric_setup_tpg_lun_cit(tf);
989 target_fabric_setup_tpg_np_cit(tf);
990 target_fabric_setup_tpg_np_base_cit(tf);
991 target_fabric_setup_tpg_attrib_cit(tf);
992 target_fabric_setup_tpg_auth_cit(tf);
993 target_fabric_setup_tpg_param_cit(tf);
994 target_fabric_setup_tpg_nacl_cit(tf);
995 target_fabric_setup_tpg_nacl_base_cit(tf);
996 target_fabric_setup_tpg_nacl_attrib_cit(tf);
997 target_fabric_setup_tpg_nacl_auth_cit(tf);
998 target_fabric_setup_tpg_nacl_param_cit(tf);
999 target_fabric_setup_tpg_nacl_stat_cit(tf);
1000 target_fabric_setup_tpg_mappedlun_cit(tf);
1001 target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1002
1003 return 0;
1004}
1005
