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23#include <linux/module.h>
24#include <linux/moduleparam.h>
25#include <linux/version.h>
26#include <generated/utsrelease.h>
27#include <linux/utsname.h>
28#include <linux/init.h>
29#include <linux/fs.h>
30#include <linux/namei.h>
31#include <linux/slab.h>
32#include <linux/types.h>
33#include <linux/delay.h>
34#include <linux/unistd.h>
35#include <linux/string.h>
36#include <linux/syscalls.h>
37#include <linux/configfs.h>
38
39#include <target/target_core_base.h>
40#include <target/target_core_device.h>
41#include <target/target_core_tpg.h>
42#include <target/target_core_transport.h>
43#include <target/target_core_fabric_ops.h>
44#include <target/target_core_fabric_configfs.h>
45#include <target/target_core_configfs.h>
46#include <target/configfs_macros.h>
47
48#include "target_core_alua.h"
49#include "target_core_hba.h"
50#include "target_core_pr.h"
51#include "target_core_stat.h"
52
53#define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
54static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
55{ \
56 struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \
57 struct config_item_type *cit = &tfc->tfc_##_name##_cit; \
58 \
59 cit->ct_item_ops = _item_ops; \
60 cit->ct_group_ops = _group_ops; \
61 cit->ct_attrs = _attrs; \
62 cit->ct_owner = tf->tf_module; \
63 printk("Setup generic %s\n", __stringify(_name)); \
64}
65
66
67
68static int target_fabric_mappedlun_link(
69 struct config_item *lun_acl_ci,
70 struct config_item *lun_ci)
71{
72 struct se_dev_entry *deve;
73 struct se_lun *lun = container_of(to_config_group(lun_ci),
74 struct se_lun, lun_group);
75 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
76 struct se_lun_acl, se_lun_group);
77 struct se_portal_group *se_tpg;
78 struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
79 int ret = 0, lun_access;
80
81
82
83 if (!(lun->lun_sep) || !(lun->lun_sep->sep_tpg)) {
84 printk(KERN_ERR "Source se_lun->lun_sep or lun->lun_sep->sep"
85 "_tpg does not exist\n");
86 return -EINVAL;
87 }
88 se_tpg = lun->lun_sep->sep_tpg;
89
90 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
91 tpg_ci = &nacl_ci->ci_group->cg_item;
92 wwn_ci = &tpg_ci->ci_group->cg_item;
93 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
94 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
95
96
97
98 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
99 printk(KERN_ERR "Illegal Initiator ACL SymLink outside of %s\n",
100 config_item_name(wwn_ci));
101 return -EINVAL;
102 }
103 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
104 printk(KERN_ERR "Illegal Initiator ACL Symlink outside of %s"
105 " TPGT: %s\n", config_item_name(wwn_ci),
106 config_item_name(tpg_ci));
107 return -EINVAL;
108 }
109
110
111
112
113
114
115 spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
116 deve = &lacl->se_lun_nacl->device_list[lacl->mapped_lun];
117 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
118 lun_access = deve->lun_flags;
119 else
120 lun_access =
121 (TPG_TFO(se_tpg)->tpg_check_prod_mode_write_protect(
122 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
123 TRANSPORT_LUNFLAGS_READ_WRITE;
124 spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
125
126
127
128
129
130
131 ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
132 lun->unpacked_lun, lun_access);
133
134 return (ret < 0) ? -EINVAL : 0;
135}
136
137static int target_fabric_mappedlun_unlink(
138 struct config_item *lun_acl_ci,
139 struct config_item *lun_ci)
140{
141 struct se_lun *lun;
142 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
143 struct se_lun_acl, se_lun_group);
144 struct se_node_acl *nacl = lacl->se_lun_nacl;
145 struct se_dev_entry *deve = &nacl->device_list[lacl->mapped_lun];
146 struct se_portal_group *se_tpg;
147
148
149
150 if (!(deve->se_lun))
151 return 0;
152
153 lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
154 se_tpg = lun->lun_sep->sep_tpg;
155
156 core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
157 return 0;
158}
159
160CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
161#define TCM_MAPPEDLUN_ATTR(_name, _mode) \
162static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
163 __CONFIGFS_EATTR(_name, _mode, \
164 target_fabric_mappedlun_show_##_name, \
165 target_fabric_mappedlun_store_##_name);
166
167static ssize_t target_fabric_mappedlun_show_write_protect(
168 struct se_lun_acl *lacl,
169 char *page)
170{
171 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
172 struct se_dev_entry *deve;
173 ssize_t len;
174
175 spin_lock_irq(&se_nacl->device_list_lock);
176 deve = &se_nacl->device_list[lacl->mapped_lun];
177 len = sprintf(page, "%d\n",
178 (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
179 1 : 0);
180 spin_unlock_irq(&se_nacl->device_list_lock);
181
182 return len;
183}
184
185static ssize_t target_fabric_mappedlun_store_write_protect(
186 struct se_lun_acl *lacl,
187 const char *page,
188 size_t count)
189{
190 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
191 struct se_portal_group *se_tpg = se_nacl->se_tpg;
192 unsigned long op;
193
194 if (strict_strtoul(page, 0, &op))
195 return -EINVAL;
196
197 if ((op != 1) && (op != 0))
198 return -EINVAL;
199
200 core_update_device_list_access(lacl->mapped_lun, (op) ?
201 TRANSPORT_LUNFLAGS_READ_ONLY :
202 TRANSPORT_LUNFLAGS_READ_WRITE,
203 lacl->se_lun_nacl);
204
205 printk(KERN_INFO "%s_ConfigFS: Changed Initiator ACL: %s"
206 " Mapped LUN: %u Write Protect bit to %s\n",
207 TPG_TFO(se_tpg)->get_fabric_name(),
208 lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
209
210 return count;
211
212}
213
214TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
215
216CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
217
218static void target_fabric_mappedlun_release(struct config_item *item)
219{
220 struct se_lun_acl *lacl = container_of(to_config_group(item),
221 struct se_lun_acl, se_lun_group);
222 struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
223
224 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
225}
226
227static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
228 &target_fabric_mappedlun_write_protect.attr,
229 NULL,
230};
231
232static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
233 .release = target_fabric_mappedlun_release,
234 .show_attribute = target_fabric_mappedlun_attr_show,
235 .store_attribute = target_fabric_mappedlun_attr_store,
236 .allow_link = target_fabric_mappedlun_link,
237 .drop_link = target_fabric_mappedlun_unlink,
238};
239
240TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
241 target_fabric_mappedlun_attrs);
242
243
244
245
246
247static struct config_group *target_core_mappedlun_stat_mkdir(
248 struct config_group *group,
249 const char *name)
250{
251 return ERR_PTR(-ENOSYS);
252}
253
254static void target_core_mappedlun_stat_rmdir(
255 struct config_group *group,
256 struct config_item *item)
257{
258 return;
259}
260
261static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
262 .make_group = target_core_mappedlun_stat_mkdir,
263 .drop_item = target_core_mappedlun_stat_rmdir,
264};
265
266TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
267 NULL);
268
269
270
271
272
273CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
274
275static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
276 .show_attribute = target_fabric_nacl_attrib_attr_show,
277 .store_attribute = target_fabric_nacl_attrib_attr_store,
278};
279
280TF_CIT_SETUP(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, NULL);
281
282
283
284
285
286CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
287
288static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
289 .show_attribute = target_fabric_nacl_auth_attr_show,
290 .store_attribute = target_fabric_nacl_auth_attr_store,
291};
292
293TF_CIT_SETUP(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, NULL);
294
295
296
297
298
299CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
300
301static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
302 .show_attribute = target_fabric_nacl_param_attr_show,
303 .store_attribute = target_fabric_nacl_param_attr_store,
304};
305
306TF_CIT_SETUP(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, NULL);
307
308
309
310
311
312CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
313
314static struct config_group *target_fabric_make_mappedlun(
315 struct config_group *group,
316 const char *name)
317{
318 struct se_node_acl *se_nacl = container_of(group,
319 struct se_node_acl, acl_group);
320 struct se_portal_group *se_tpg = se_nacl->se_tpg;
321 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
322 struct se_lun_acl *lacl;
323 struct config_item *acl_ci;
324 struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
325 char *buf;
326 unsigned long mapped_lun;
327 int ret = 0;
328
329 acl_ci = &group->cg_item;
330 if (!(acl_ci)) {
331 printk(KERN_ERR "Unable to locatel acl_ci\n");
332 return NULL;
333 }
334
335 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
336 if (!(buf)) {
337 printk(KERN_ERR "Unable to allocate memory for name buf\n");
338 return ERR_PTR(-ENOMEM);
339 }
340 snprintf(buf, strlen(name) + 1, "%s", name);
341
342
343
344 if (strstr(buf, "lun_") != buf) {
345 printk(KERN_ERR "Unable to locate \"lun_\" from buf: %s"
346 " name: %s\n", buf, name);
347 ret = -EINVAL;
348 goto out;
349 }
350
351
352
353
354 if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) {
355 ret = -EINVAL;
356 goto out;
357 }
358
359 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, mapped_lun,
360 config_item_name(acl_ci), &ret);
361 if (!(lacl)) {
362 ret = -EINVAL;
363 goto out;
364 }
365
366 lacl_cg = &lacl->se_lun_group;
367 lacl_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
368 GFP_KERNEL);
369 if (!lacl_cg->default_groups) {
370 printk(KERN_ERR "Unable to allocate lacl_cg->default_groups\n");
371 ret = -ENOMEM;
372 goto out;
373 }
374
375 config_group_init_type_name(&lacl->se_lun_group, name,
376 &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
377 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
378 "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
379 lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
380 lacl_cg->default_groups[1] = NULL;
381
382 ml_stat_grp = &ML_STAT_GRPS(lacl)->stat_group;
383 ml_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
384 GFP_KERNEL);
385 if (!ml_stat_grp->default_groups) {
386 printk(KERN_ERR "Unable to allocate ml_stat_grp->default_groups\n");
387 ret = -ENOMEM;
388 goto out;
389 }
390 target_stat_setup_mappedlun_default_groups(lacl);
391
392 kfree(buf);
393 return &lacl->se_lun_group;
394out:
395 if (lacl_cg)
396 kfree(lacl_cg->default_groups);
397 kfree(buf);
398 return ERR_PTR(ret);
399}
400
401static void target_fabric_drop_mappedlun(
402 struct config_group *group,
403 struct config_item *item)
404{
405 struct se_lun_acl *lacl = container_of(to_config_group(item),
406 struct se_lun_acl, se_lun_group);
407 struct config_item *df_item;
408 struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
409 int i;
410
411 ml_stat_grp = &ML_STAT_GRPS(lacl)->stat_group;
412 for (i = 0; ml_stat_grp->default_groups[i]; i++) {
413 df_item = &ml_stat_grp->default_groups[i]->cg_item;
414 ml_stat_grp->default_groups[i] = NULL;
415 config_item_put(df_item);
416 }
417 kfree(ml_stat_grp->default_groups);
418
419 lacl_cg = &lacl->se_lun_group;
420 for (i = 0; lacl_cg->default_groups[i]; i++) {
421 df_item = &lacl_cg->default_groups[i]->cg_item;
422 lacl_cg->default_groups[i] = NULL;
423 config_item_put(df_item);
424 }
425 kfree(lacl_cg->default_groups);
426
427 config_item_put(item);
428}
429
430static void target_fabric_nacl_base_release(struct config_item *item)
431{
432 struct se_node_acl *se_nacl = container_of(to_config_group(item),
433 struct se_node_acl, acl_group);
434 struct se_portal_group *se_tpg = se_nacl->se_tpg;
435 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
436
437 tf->tf_ops.fabric_drop_nodeacl(se_nacl);
438}
439
440static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
441 .release = target_fabric_nacl_base_release,
442 .show_attribute = target_fabric_nacl_base_attr_show,
443 .store_attribute = target_fabric_nacl_base_attr_store,
444};
445
446static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
447 .make_group = target_fabric_make_mappedlun,
448 .drop_item = target_fabric_drop_mappedlun,
449};
450
451TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
452 &target_fabric_nacl_base_group_ops, NULL);
453
454
455
456
457
458
459
460
461TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
462
463
464
465
466
467static struct config_group *target_fabric_make_nodeacl(
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_acl_group);
473 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
474 struct se_node_acl *se_nacl;
475 struct config_group *nacl_cg;
476
477 if (!(tf->tf_ops.fabric_make_nodeacl)) {
478 printk(KERN_ERR "tf->tf_ops.fabric_make_nodeacl is NULL\n");
479 return ERR_PTR(-ENOSYS);
480 }
481
482 se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name);
483 if (IS_ERR(se_nacl))
484 return ERR_PTR(PTR_ERR(se_nacl));
485
486 nacl_cg = &se_nacl->acl_group;
487 nacl_cg->default_groups = se_nacl->acl_default_groups;
488 nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
489 nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
490 nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
491 nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
492 nacl_cg->default_groups[4] = NULL;
493
494 config_group_init_type_name(&se_nacl->acl_group, name,
495 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
496 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
497 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
498 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
499 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
500 config_group_init_type_name(&se_nacl->acl_param_group, "param",
501 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
502 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
503 "fabric_statistics",
504 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
505
506 return &se_nacl->acl_group;
507}
508
509static void target_fabric_drop_nodeacl(
510 struct config_group *group,
511 struct config_item *item)
512{
513 struct se_node_acl *se_nacl = container_of(to_config_group(item),
514 struct se_node_acl, acl_group);
515 struct config_item *df_item;
516 struct config_group *nacl_cg;
517 int i;
518
519 nacl_cg = &se_nacl->acl_group;
520 for (i = 0; nacl_cg->default_groups[i]; i++) {
521 df_item = &nacl_cg->default_groups[i]->cg_item;
522 nacl_cg->default_groups[i] = NULL;
523 config_item_put(df_item);
524 }
525
526
527
528 config_item_put(item);
529}
530
531static struct configfs_group_operations target_fabric_nacl_group_ops = {
532 .make_group = target_fabric_make_nodeacl,
533 .drop_item = target_fabric_drop_nodeacl,
534};
535
536TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
537
538
539
540
541
542CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
543
544static void target_fabric_np_base_release(struct config_item *item)
545{
546 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
547 struct se_tpg_np, tpg_np_group);
548 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
549 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
550
551 tf->tf_ops.fabric_drop_np(se_tpg_np);
552}
553
554static struct configfs_item_operations target_fabric_np_base_item_ops = {
555 .release = target_fabric_np_base_release,
556 .show_attribute = target_fabric_np_base_attr_show,
557 .store_attribute = target_fabric_np_base_attr_store,
558};
559
560TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL);
561
562
563
564
565
566static struct config_group *target_fabric_make_np(
567 struct config_group *group,
568 const char *name)
569{
570 struct se_portal_group *se_tpg = container_of(group,
571 struct se_portal_group, tpg_np_group);
572 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
573 struct se_tpg_np *se_tpg_np;
574
575 if (!(tf->tf_ops.fabric_make_np)) {
576 printk(KERN_ERR "tf->tf_ops.fabric_make_np is NULL\n");
577 return ERR_PTR(-ENOSYS);
578 }
579
580 se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name);
581 if (!(se_tpg_np) || IS_ERR(se_tpg_np))
582 return ERR_PTR(-EINVAL);
583
584 se_tpg_np->tpg_np_parent = se_tpg;
585 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
586 &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
587
588 return &se_tpg_np->tpg_np_group;
589}
590
591static void target_fabric_drop_np(
592 struct config_group *group,
593 struct config_item *item)
594{
595
596
597
598 config_item_put(item);
599}
600
601static struct configfs_group_operations target_fabric_np_group_ops = {
602 .make_group = &target_fabric_make_np,
603 .drop_item = &target_fabric_drop_np,
604};
605
606TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
607
608
609
610
611
612CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
613#define TCM_PORT_ATTR(_name, _mode) \
614static struct target_fabric_port_attribute target_fabric_port_##_name = \
615 __CONFIGFS_EATTR(_name, _mode, \
616 target_fabric_port_show_attr_##_name, \
617 target_fabric_port_store_attr_##_name);
618
619#define TCM_PORT_ATTOR_RO(_name) \
620 __CONFIGFS_EATTR_RO(_name, \
621 target_fabric_port_show_attr_##_name);
622
623
624
625
626static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
627 struct se_lun *lun,
628 char *page)
629{
630 if (!(lun))
631 return -ENODEV;
632
633 if (!(lun->lun_sep))
634 return -ENODEV;
635
636 return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
637}
638
639static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
640 struct se_lun *lun,
641 const char *page,
642 size_t count)
643{
644 if (!(lun))
645 return -ENODEV;
646
647 if (!(lun->lun_sep))
648 return -ENODEV;
649
650 return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
651}
652
653TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
654
655
656
657
658static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
659 struct se_lun *lun,
660 char *page)
661{
662 if (!(lun))
663 return -ENODEV;
664
665 if (!(lun->lun_sep))
666 return -ENODEV;
667
668 return core_alua_show_offline_bit(lun, page);
669}
670
671static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
672 struct se_lun *lun,
673 const char *page,
674 size_t count)
675{
676 if (!(lun))
677 return -ENODEV;
678
679 if (!(lun->lun_sep))
680 return -ENODEV;
681
682 return core_alua_store_offline_bit(lun, page, count);
683}
684
685TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
686
687
688
689
690static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
691 struct se_lun *lun,
692 char *page)
693{
694 if (!(lun))
695 return -ENODEV;
696
697 if (!(lun->lun_sep))
698 return -ENODEV;
699
700 return core_alua_show_secondary_status(lun, page);
701}
702
703static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
704 struct se_lun *lun,
705 const char *page,
706 size_t count)
707{
708 if (!(lun))
709 return -ENODEV;
710
711 if (!(lun->lun_sep))
712 return -ENODEV;
713
714 return core_alua_store_secondary_status(lun, page, count);
715}
716
717TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
718
719
720
721
722static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
723 struct se_lun *lun,
724 char *page)
725{
726 if (!(lun))
727 return -ENODEV;
728
729 if (!(lun->lun_sep))
730 return -ENODEV;
731
732 return core_alua_show_secondary_write_metadata(lun, page);
733}
734
735static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
736 struct se_lun *lun,
737 const char *page,
738 size_t count)
739{
740 if (!(lun))
741 return -ENODEV;
742
743 if (!(lun->lun_sep))
744 return -ENODEV;
745
746 return core_alua_store_secondary_write_metadata(lun, page, count);
747}
748
749TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
750
751
752static struct configfs_attribute *target_fabric_port_attrs[] = {
753 &target_fabric_port_alua_tg_pt_gp.attr,
754 &target_fabric_port_alua_tg_pt_offline.attr,
755 &target_fabric_port_alua_tg_pt_status.attr,
756 &target_fabric_port_alua_tg_pt_write_md.attr,
757 NULL,
758};
759
760CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
761
762static int target_fabric_port_link(
763 struct config_item *lun_ci,
764 struct config_item *se_dev_ci)
765{
766 struct config_item *tpg_ci;
767 struct se_device *dev;
768 struct se_lun *lun = container_of(to_config_group(lun_ci),
769 struct se_lun, lun_group);
770 struct se_lun *lun_p;
771 struct se_portal_group *se_tpg;
772 struct se_subsystem_dev *se_dev = container_of(
773 to_config_group(se_dev_ci), struct se_subsystem_dev,
774 se_dev_group);
775 struct target_fabric_configfs *tf;
776 int ret;
777
778 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
779 se_tpg = container_of(to_config_group(tpg_ci),
780 struct se_portal_group, tpg_group);
781 tf = se_tpg->se_tpg_wwn->wwn_tf;
782
783 if (lun->lun_se_dev != NULL) {
784 printk(KERN_ERR "Port Symlink already exists\n");
785 return -EEXIST;
786 }
787
788 dev = se_dev->se_dev_ptr;
789 if (!(dev)) {
790 printk(KERN_ERR "Unable to locate struct se_device pointer from"
791 " %s\n", config_item_name(se_dev_ci));
792 ret = -ENODEV;
793 goto out;
794 }
795
796 lun_p = core_dev_add_lun(se_tpg, dev->se_hba, dev,
797 lun->unpacked_lun);
798 if ((IS_ERR(lun_p)) || !(lun_p)) {
799 printk(KERN_ERR "core_dev_add_lun() failed\n");
800 ret = -EINVAL;
801 goto out;
802 }
803
804 if (tf->tf_ops.fabric_post_link) {
805
806
807
808
809
810 tf->tf_ops.fabric_post_link(se_tpg, lun);
811 }
812
813 return 0;
814out:
815 return ret;
816}
817
818static int target_fabric_port_unlink(
819 struct config_item *lun_ci,
820 struct config_item *se_dev_ci)
821{
822 struct se_lun *lun = container_of(to_config_group(lun_ci),
823 struct se_lun, lun_group);
824 struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
825 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
826
827 if (tf->tf_ops.fabric_pre_unlink) {
828
829
830
831
832
833 tf->tf_ops.fabric_pre_unlink(se_tpg, lun);
834 }
835
836 core_dev_del_lun(se_tpg, lun->unpacked_lun);
837 return 0;
838}
839
840static struct configfs_item_operations target_fabric_port_item_ops = {
841 .show_attribute = target_fabric_port_attr_show,
842 .store_attribute = target_fabric_port_attr_store,
843 .allow_link = target_fabric_port_link,
844 .drop_link = target_fabric_port_unlink,
845};
846
847TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
848
849
850
851
852
853static struct config_group *target_core_port_stat_mkdir(
854 struct config_group *group,
855 const char *name)
856{
857 return ERR_PTR(-ENOSYS);
858}
859
860static void target_core_port_stat_rmdir(
861 struct config_group *group,
862 struct config_item *item)
863{
864 return;
865}
866
867static struct configfs_group_operations target_fabric_port_stat_group_ops = {
868 .make_group = target_core_port_stat_mkdir,
869 .drop_item = target_core_port_stat_rmdir,
870};
871
872TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
873
874
875
876
877
878static struct config_group *target_fabric_make_lun(
879 struct config_group *group,
880 const char *name)
881{
882 struct se_lun *lun;
883 struct se_portal_group *se_tpg = container_of(group,
884 struct se_portal_group, tpg_lun_group);
885 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
886 struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
887 unsigned long unpacked_lun;
888 int errno;
889
890 if (strstr(name, "lun_") != name) {
891 printk(KERN_ERR "Unable to locate \'_\" in"
892 " \"lun_$LUN_NUMBER\"\n");
893 return ERR_PTR(-EINVAL);
894 }
895 if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX)
896 return ERR_PTR(-EINVAL);
897
898 lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
899 if (!(lun))
900 return ERR_PTR(-EINVAL);
901
902 lun_cg = &lun->lun_group;
903 lun_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
904 GFP_KERNEL);
905 if (!lun_cg->default_groups) {
906 printk(KERN_ERR "Unable to allocate lun_cg->default_groups\n");
907 return ERR_PTR(-ENOMEM);
908 }
909
910 config_group_init_type_name(&lun->lun_group, name,
911 &TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
912 config_group_init_type_name(&lun->port_stat_grps.stat_group,
913 "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
914 lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
915 lun_cg->default_groups[1] = NULL;
916
917 port_stat_grp = &PORT_STAT_GRP(lun)->stat_group;
918 port_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
919 GFP_KERNEL);
920 if (!port_stat_grp->default_groups) {
921 printk(KERN_ERR "Unable to allocate port_stat_grp->default_groups\n");
922 errno = -ENOMEM;
923 goto out;
924 }
925 target_stat_setup_port_default_groups(lun);
926
927 return &lun->lun_group;
928out:
929 if (lun_cg)
930 kfree(lun_cg->default_groups);
931 return ERR_PTR(errno);
932}
933
934static void target_fabric_drop_lun(
935 struct config_group *group,
936 struct config_item *item)
937{
938 struct se_lun *lun = container_of(to_config_group(item),
939 struct se_lun, lun_group);
940 struct config_item *df_item;
941 struct config_group *lun_cg, *port_stat_grp;
942 int i;
943
944 port_stat_grp = &PORT_STAT_GRP(lun)->stat_group;
945 for (i = 0; port_stat_grp->default_groups[i]; i++) {
946 df_item = &port_stat_grp->default_groups[i]->cg_item;
947 port_stat_grp->default_groups[i] = NULL;
948 config_item_put(df_item);
949 }
950 kfree(port_stat_grp->default_groups);
951
952 lun_cg = &lun->lun_group;
953 for (i = 0; lun_cg->default_groups[i]; i++) {
954 df_item = &lun_cg->default_groups[i]->cg_item;
955 lun_cg->default_groups[i] = NULL;
956 config_item_put(df_item);
957 }
958 kfree(lun_cg->default_groups);
959
960 config_item_put(item);
961}
962
963static struct configfs_group_operations target_fabric_lun_group_ops = {
964 .make_group = &target_fabric_make_lun,
965 .drop_item = &target_fabric_drop_lun,
966};
967
968TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
969
970
971
972
973
974CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
975
976static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
977 .show_attribute = target_fabric_tpg_attrib_attr_show,
978 .store_attribute = target_fabric_tpg_attrib_attr_store,
979};
980
981TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
982
983
984
985
986
987CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
988
989static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
990 .show_attribute = target_fabric_tpg_param_attr_show,
991 .store_attribute = target_fabric_tpg_param_attr_store,
992};
993
994TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL);
995
996
997
998
999
1000
1001
1002CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
1003
1004static void target_fabric_tpg_release(struct config_item *item)
1005{
1006 struct se_portal_group *se_tpg = container_of(to_config_group(item),
1007 struct se_portal_group, tpg_group);
1008 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
1009 struct target_fabric_configfs *tf = wwn->wwn_tf;
1010
1011 tf->tf_ops.fabric_drop_tpg(se_tpg);
1012}
1013
1014static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
1015 .release = target_fabric_tpg_release,
1016 .show_attribute = target_fabric_tpg_attr_show,
1017 .store_attribute = target_fabric_tpg_attr_store,
1018};
1019
1020TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL);
1021
1022
1023
1024
1025
1026static struct config_group *target_fabric_make_tpg(
1027 struct config_group *group,
1028 const char *name)
1029{
1030 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1031 struct target_fabric_configfs *tf = wwn->wwn_tf;
1032 struct se_portal_group *se_tpg;
1033
1034 if (!(tf->tf_ops.fabric_make_tpg)) {
1035 printk(KERN_ERR "tf->tf_ops.fabric_make_tpg is NULL\n");
1036 return ERR_PTR(-ENOSYS);
1037 }
1038
1039 se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name);
1040 if (!(se_tpg) || IS_ERR(se_tpg))
1041 return ERR_PTR(-EINVAL);
1042
1043
1044
1045 se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1046 se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1047 se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1048 se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1049 se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1050 se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
1051 se_tpg->tpg_group.default_groups[5] = NULL;
1052
1053 config_group_init_type_name(&se_tpg->tpg_group, name,
1054 &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
1055 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1056 &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
1057 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1058 &TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
1059 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1060 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
1061 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1062 &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
1063 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1064 &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
1065
1066 return &se_tpg->tpg_group;
1067}
1068
1069static void target_fabric_drop_tpg(
1070 struct config_group *group,
1071 struct config_item *item)
1072{
1073 struct se_portal_group *se_tpg = container_of(to_config_group(item),
1074 struct se_portal_group, tpg_group);
1075 struct config_group *tpg_cg = &se_tpg->tpg_group;
1076 struct config_item *df_item;
1077 int i;
1078
1079
1080
1081
1082 for (i = 0; tpg_cg->default_groups[i]; i++) {
1083 df_item = &tpg_cg->default_groups[i]->cg_item;
1084 tpg_cg->default_groups[i] = NULL;
1085 config_item_put(df_item);
1086 }
1087
1088 config_item_put(item);
1089}
1090
1091static void target_fabric_release_wwn(struct config_item *item)
1092{
1093 struct se_wwn *wwn = container_of(to_config_group(item),
1094 struct se_wwn, wwn_group);
1095 struct target_fabric_configfs *tf = wwn->wwn_tf;
1096
1097 tf->tf_ops.fabric_drop_wwn(wwn);
1098}
1099
1100static struct configfs_item_operations target_fabric_tpg_item_ops = {
1101 .release = target_fabric_release_wwn,
1102};
1103
1104static struct configfs_group_operations target_fabric_tpg_group_ops = {
1105 .make_group = target_fabric_make_tpg,
1106 .drop_item = target_fabric_drop_tpg,
1107};
1108
1109TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1110 NULL);
1111
1112
1113
1114
1115
1116
1117
1118
1119TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1120
1121
1122
1123
1124
1125static struct config_group *target_fabric_make_wwn(
1126 struct config_group *group,
1127 const char *name)
1128{
1129 struct target_fabric_configfs *tf = container_of(group,
1130 struct target_fabric_configfs, tf_group);
1131 struct se_wwn *wwn;
1132
1133 if (!(tf->tf_ops.fabric_make_wwn)) {
1134 printk(KERN_ERR "tf->tf_ops.fabric_make_wwn is NULL\n");
1135 return ERR_PTR(-ENOSYS);
1136 }
1137
1138 wwn = tf->tf_ops.fabric_make_wwn(tf, group, name);
1139 if (!(wwn) || IS_ERR(wwn))
1140 return ERR_PTR(-EINVAL);
1141
1142 wwn->wwn_tf = tf;
1143
1144
1145
1146 wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1147 wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1148 wwn->wwn_group.default_groups[1] = NULL;
1149
1150 config_group_init_type_name(&wwn->wwn_group, name,
1151 &TF_CIT_TMPL(tf)->tfc_tpg_cit);
1152 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1153 &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
1154
1155 return &wwn->wwn_group;
1156}
1157
1158static void target_fabric_drop_wwn(
1159 struct config_group *group,
1160 struct config_item *item)
1161{
1162 struct se_wwn *wwn = container_of(to_config_group(item),
1163 struct se_wwn, wwn_group);
1164 struct config_item *df_item;
1165 struct config_group *cg = &wwn->wwn_group;
1166 int i;
1167
1168 for (i = 0; cg->default_groups[i]; i++) {
1169 df_item = &cg->default_groups[i]->cg_item;
1170 cg->default_groups[i] = NULL;
1171 config_item_put(df_item);
1172 }
1173
1174 config_item_put(item);
1175}
1176
1177static struct configfs_group_operations target_fabric_wwn_group_ops = {
1178 .make_group = target_fabric_make_wwn,
1179 .drop_item = target_fabric_drop_wwn,
1180};
1181
1182
1183
1184CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1185
1186static struct configfs_item_operations target_fabric_wwn_item_ops = {
1187 .show_attribute = target_fabric_wwn_attr_show,
1188 .store_attribute = target_fabric_wwn_attr_store,
1189};
1190
1191TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL);
1192
1193
1194
1195
1196
1197CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1198 tf_disc_group);
1199
1200static struct configfs_item_operations target_fabric_discovery_item_ops = {
1201 .show_attribute = target_fabric_discovery_attr_show,
1202 .store_attribute = target_fabric_discovery_attr_store,
1203};
1204
1205TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL);
1206
1207
1208
1209int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1210{
1211 target_fabric_setup_discovery_cit(tf);
1212 target_fabric_setup_wwn_cit(tf);
1213 target_fabric_setup_wwn_fabric_stats_cit(tf);
1214 target_fabric_setup_tpg_cit(tf);
1215 target_fabric_setup_tpg_base_cit(tf);
1216 target_fabric_setup_tpg_port_cit(tf);
1217 target_fabric_setup_tpg_port_stat_cit(tf);
1218 target_fabric_setup_tpg_lun_cit(tf);
1219 target_fabric_setup_tpg_np_cit(tf);
1220 target_fabric_setup_tpg_np_base_cit(tf);
1221 target_fabric_setup_tpg_attrib_cit(tf);
1222 target_fabric_setup_tpg_param_cit(tf);
1223 target_fabric_setup_tpg_nacl_cit(tf);
1224 target_fabric_setup_tpg_nacl_base_cit(tf);
1225 target_fabric_setup_tpg_nacl_attrib_cit(tf);
1226 target_fabric_setup_tpg_nacl_auth_cit(tf);
1227 target_fabric_setup_tpg_nacl_param_cit(tf);
1228 target_fabric_setup_tpg_nacl_stat_cit(tf);
1229 target_fabric_setup_tpg_mappedlun_cit(tf);
1230 target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1231
1232 return 0;
1233}
1234
