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