1 /*******************************************************************************
2 * Filename: target_core_fabric_configfs.c
4 * This file contains generic fabric module configfs infrastructure for
7 * (c) Copyright 2010-2013 Datera, Inc.
9 * Nicholas A. Bellinger <nab@linux-iscsi.org>
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.
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 ****************************************************************************/
22 #include <linux/module.h>
23 #include <linux/moduleparam.h>
24 #include <linux/utsname.h>
25 #include <linux/init.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>
36 #include <target/target_core_base.h>
37 #include <target/target_core_fabric.h>
39 #include "target_core_internal.h"
40 #include "target_core_alua.h"
41 #include "target_core_pr.h"
43 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
44 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
46 struct config_item_type *cit = &tf->tf_##_name##_cit; \
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)); \
55 #define TF_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
56 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
58 struct config_item_type *cit = &tf->tf_##_name##_cit; \
59 struct configfs_attribute **attrs = tf->tf_ops->tfc_##_name##_attrs; \
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)); \
68 static struct configfs_item_operations target_fabric_port_item_ops;
70 /* Start of tfc_tpg_mappedlun_cit */
72 static int target_fabric_mappedlun_link(
73 struct config_item *lun_acl_ci,
74 struct config_item *lun_ci)
76 struct se_dev_entry *deve;
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;
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);
89 lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
92 * Ensure that the source port exists
94 if (!lun->lun_se_dev) {
95 pr_err("Source se_lun->lun_se_dev does not exist\n");
98 if (lun->lun_shutdown) {
99 pr_err("Unable to create mappedlun symlink because"
100 " lun->lun_shutdown=true\n");
103 se_tpg = lun->lun_tpg;
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;
111 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
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));
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));
125 * If this struct se_node_acl was dynamically generated with
126 * tpg_1/attrib/generate_node_acls=1, use the existing
127 * deve->lun_access_ro value, which will be true when
128 * tpg_1/attrib/demo_mode_write_protect=1
131 deve = target_nacl_find_deve(lacl->se_lun_nacl, lacl->mapped_lun);
133 lun_access_ro = deve->lun_access_ro;
136 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
137 se_tpg)) ? true : false;
140 * Determine the actual mapped LUN value user wants..
142 * This value is what the SCSI Initiator actually sees the
143 * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
145 return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access_ro);
148 static void target_fabric_mappedlun_unlink(
149 struct config_item *lun_acl_ci,
150 struct config_item *lun_ci)
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);
157 core_dev_del_initiator_node_lun_acl(lun, lacl);
160 static struct se_lun_acl *item_to_lun_acl(struct config_item *item)
162 return container_of(to_config_group(item), struct se_lun_acl,
166 static ssize_t target_fabric_mappedlun_write_protect_show(
167 struct config_item *item, char *page)
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;
175 deve = target_nacl_find_deve(se_nacl, lacl->mapped_lun);
177 len = sprintf(page, "%d\n", deve->lun_access_ro);
184 static ssize_t target_fabric_mappedlun_write_protect_store(
185 struct config_item *item, const char *page, size_t count)
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;
193 ret = kstrtoul(page, 0, &wp);
197 if ((wp != 1) && (wp != 0))
200 /* wp=1 means lun_access_ro=true */
201 core_update_device_list_access(lacl->mapped_lun, wp, lacl->se_lun_nacl);
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");
212 CONFIGFS_ATTR(target_fabric_mappedlun_, write_protect);
214 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
215 &target_fabric_mappedlun_attr_write_protect,
219 static void target_fabric_mappedlun_release(struct config_item *item)
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;
225 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
228 static 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,
234 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
235 target_fabric_mappedlun_attrs);
237 /* End of tfc_tpg_mappedlun_cit */
239 /* Start of tfc_tpg_mappedlun_port_cit */
241 static struct config_group *target_core_mappedlun_stat_mkdir(
242 struct config_group *group,
245 return ERR_PTR(-ENOSYS);
248 static void target_core_mappedlun_stat_rmdir(
249 struct config_group *group,
250 struct config_item *item)
255 static 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,
260 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
263 /* End of tfc_tpg_mappedlun_port_cit */
265 TF_CIT_SETUP_DRV(tpg_nacl_attrib, NULL, NULL);
266 TF_CIT_SETUP_DRV(tpg_nacl_auth, NULL, NULL);
267 TF_CIT_SETUP_DRV(tpg_nacl_param, NULL, NULL);
269 /* Start of tfc_tpg_nacl_base_cit */
271 static struct config_group *target_fabric_make_mappedlun(
272 struct config_group *group,
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;
281 unsigned long long mapped_lun;
284 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
286 pr_err("Unable to allocate memory for name buf\n");
287 return ERR_PTR(-ENOMEM);
289 snprintf(buf, strlen(name) + 1, "%s", name);
291 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
293 if (strstr(buf, "lun_") != buf) {
294 pr_err("Unable to locate \"lun_\" from buf: %s"
295 " name: %s\n", buf, name);
300 * Determine the Mapped LUN value. This is what the SCSI Initiator
301 * Port will actually see.
303 ret = kstrtoull(buf + 4, 0, &mapped_lun);
307 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
314 config_group_init_type_name(&lacl->se_lun_group, name,
315 &tf->tf_tpg_mappedlun_cit);
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);
322 target_stat_setup_mappedlun_default_groups(lacl);
325 return &lacl->se_lun_group;
332 static void target_fabric_drop_mappedlun(
333 struct config_group *group,
334 struct config_item *item)
336 struct se_lun_acl *lacl = container_of(to_config_group(item),
337 struct se_lun_acl, se_lun_group);
339 configfs_remove_default_groups(&lacl->ml_stat_grps.stat_group);
340 configfs_remove_default_groups(&lacl->se_lun_group);
342 config_item_put(item);
345 static void target_fabric_nacl_base_release(struct config_item *item)
347 struct se_node_acl *se_nacl = container_of(to_config_group(item),
348 struct se_node_acl, acl_group);
350 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
351 core_tpg_del_initiator_node_acl(se_nacl);
354 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
355 .release = target_fabric_nacl_base_release,
358 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
359 .make_group = target_fabric_make_mappedlun,
360 .drop_item = target_fabric_drop_mappedlun,
363 TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
364 &target_fabric_nacl_base_group_ops);
366 /* End of tfc_tpg_nacl_base_cit */
368 /* Start of tfc_node_fabric_stats_cit */
370 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
371 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
373 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
375 /* End of tfc_wwn_fabric_stats_cit */
377 /* Start of tfc_tpg_nacl_cit */
379 static struct config_group *target_fabric_make_nodeacl(
380 struct config_group *group,
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;
388 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
390 return ERR_CAST(se_nacl);
392 config_group_init_type_name(&se_nacl->acl_group, name,
393 &tf->tf_tpg_nacl_base_cit);
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);
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);
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);
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);
415 if (tf->tf_ops->fabric_init_nodeacl) {
416 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
418 configfs_remove_default_groups(&se_nacl->acl_fabric_stat_group);
419 core_tpg_del_initiator_node_acl(se_nacl);
424 return &se_nacl->acl_group;
427 static void target_fabric_drop_nodeacl(
428 struct config_group *group,
429 struct config_item *item)
431 struct se_node_acl *se_nacl = container_of(to_config_group(item),
432 struct se_node_acl, acl_group);
434 configfs_remove_default_groups(&se_nacl->acl_group);
437 * struct se_node_acl free is done in target_fabric_nacl_base_release()
439 config_item_put(item);
442 static struct configfs_group_operations target_fabric_nacl_group_ops = {
443 .make_group = target_fabric_make_nodeacl,
444 .drop_item = target_fabric_drop_nodeacl,
447 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
449 /* End of tfc_tpg_nacl_cit */
451 /* Start of tfc_tpg_np_base_cit */
453 static void target_fabric_np_base_release(struct config_item *item)
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;
460 tf->tf_ops->fabric_drop_np(se_tpg_np);
463 static struct configfs_item_operations target_fabric_np_base_item_ops = {
464 .release = target_fabric_np_base_release,
467 TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
469 /* End of tfc_tpg_np_base_cit */
471 /* Start of tfc_tpg_np_cit */
473 static struct config_group *target_fabric_make_np(
474 struct config_group *group,
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;
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);
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);
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);
495 return &se_tpg_np->tpg_np_group;
498 static void target_fabric_drop_np(
499 struct config_group *group,
500 struct config_item *item)
503 * struct se_tpg_np is released via target_fabric_np_base_release()
505 config_item_put(item);
508 static struct configfs_group_operations target_fabric_np_group_ops = {
509 .make_group = &target_fabric_make_np,
510 .drop_item = &target_fabric_drop_np,
513 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
515 /* End of tfc_tpg_np_cit */
517 /* Start of tfc_tpg_port_cit */
519 static struct se_lun *item_to_lun(struct config_item *item)
521 return container_of(to_config_group(item), struct se_lun,
525 static ssize_t target_fabric_port_alua_tg_pt_gp_show(struct config_item *item,
528 struct se_lun *lun = item_to_lun(item);
530 if (!lun || !lun->lun_se_dev)
533 return core_alua_show_tg_pt_gp_info(lun, page);
536 static ssize_t target_fabric_port_alua_tg_pt_gp_store(struct config_item *item,
537 const char *page, size_t count)
539 struct se_lun *lun = item_to_lun(item);
541 if (!lun || !lun->lun_se_dev)
544 return core_alua_store_tg_pt_gp_info(lun, page, count);
547 static ssize_t target_fabric_port_alua_tg_pt_offline_show(
548 struct config_item *item, char *page)
550 struct se_lun *lun = item_to_lun(item);
552 if (!lun || !lun->lun_se_dev)
555 return core_alua_show_offline_bit(lun, page);
558 static ssize_t target_fabric_port_alua_tg_pt_offline_store(
559 struct config_item *item, const char *page, size_t count)
561 struct se_lun *lun = item_to_lun(item);
563 if (!lun || !lun->lun_se_dev)
566 return core_alua_store_offline_bit(lun, page, count);
569 static ssize_t target_fabric_port_alua_tg_pt_status_show(
570 struct config_item *item, char *page)
572 struct se_lun *lun = item_to_lun(item);
574 if (!lun || !lun->lun_se_dev)
577 return core_alua_show_secondary_status(lun, page);
580 static ssize_t target_fabric_port_alua_tg_pt_status_store(
581 struct config_item *item, const char *page, size_t count)
583 struct se_lun *lun = item_to_lun(item);
585 if (!lun || !lun->lun_se_dev)
588 return core_alua_store_secondary_status(lun, page, count);
591 static ssize_t target_fabric_port_alua_tg_pt_write_md_show(
592 struct config_item *item, char *page)
594 struct se_lun *lun = item_to_lun(item);
596 if (!lun || !lun->lun_se_dev)
599 return core_alua_show_secondary_write_metadata(lun, page);
602 static ssize_t target_fabric_port_alua_tg_pt_write_md_store(
603 struct config_item *item, const char *page, size_t count)
605 struct se_lun *lun = item_to_lun(item);
607 if (!lun || !lun->lun_se_dev)
610 return core_alua_store_secondary_write_metadata(lun, page, count);
613 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_gp);
614 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_offline);
615 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_status);
616 CONFIGFS_ATTR(target_fabric_port_, alua_tg_pt_write_md);
618 static 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,
626 extern struct configfs_item_operations target_core_dev_item_ops;
628 static int target_fabric_port_link(
629 struct config_item *lun_ci,
630 struct config_item *se_dev_ci)
632 struct config_item *tpg_ci;
633 struct se_lun *lun = container_of(to_config_group(lun_ci),
634 struct se_lun, lun_group);
635 struct se_portal_group *se_tpg;
636 struct se_device *dev;
637 struct target_fabric_configfs *tf;
640 if (!se_dev_ci->ci_type ||
641 se_dev_ci->ci_type->ct_item_ops != &target_core_dev_item_ops) {
642 pr_err("Bad se_dev_ci, not a valid se_dev_ci pointer: %p\n", se_dev_ci);
645 dev = container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
647 if (!(dev->dev_flags & DF_CONFIGURED)) {
648 pr_err("se_device not configured yet, cannot port link\n");
652 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
653 se_tpg = container_of(to_config_group(tpg_ci),
654 struct se_portal_group, tpg_group);
655 tf = se_tpg->se_tpg_wwn->wwn_tf;
657 if (lun->lun_se_dev != NULL) {
658 pr_err("Port Symlink already exists\n");
662 ret = core_dev_add_lun(se_tpg, dev, lun);
664 pr_err("core_dev_add_lun() failed: %d\n", ret);
668 if (tf->tf_ops->fabric_post_link) {
670 * Call the optional fabric_post_link() to allow a
671 * fabric module to setup any additional state once
672 * core_dev_add_lun() has been called..
674 tf->tf_ops->fabric_post_link(se_tpg, lun);
682 static void target_fabric_port_unlink(
683 struct config_item *lun_ci,
684 struct config_item *se_dev_ci)
686 struct se_lun *lun = container_of(to_config_group(lun_ci),
687 struct se_lun, lun_group);
688 struct se_portal_group *se_tpg = lun->lun_tpg;
689 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
691 if (tf->tf_ops->fabric_pre_unlink) {
693 * Call the optional fabric_pre_unlink() to allow a
694 * fabric module to release any additional stat before
695 * core_dev_del_lun() is called.
697 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
700 core_dev_del_lun(se_tpg, lun);
703 static void target_fabric_port_release(struct config_item *item)
705 struct se_lun *lun = container_of(to_config_group(item),
706 struct se_lun, lun_group);
708 kfree_rcu(lun, rcu_head);
711 static struct configfs_item_operations target_fabric_port_item_ops = {
712 .release = target_fabric_port_release,
713 .allow_link = target_fabric_port_link,
714 .drop_link = target_fabric_port_unlink,
717 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
719 /* End of tfc_tpg_port_cit */
721 /* Start of tfc_tpg_port_stat_cit */
723 static struct config_group *target_core_port_stat_mkdir(
724 struct config_group *group,
727 return ERR_PTR(-ENOSYS);
730 static void target_core_port_stat_rmdir(
731 struct config_group *group,
732 struct config_item *item)
737 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
738 .make_group = target_core_port_stat_mkdir,
739 .drop_item = target_core_port_stat_rmdir,
742 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
744 /* End of tfc_tpg_port_stat_cit */
746 /* Start of tfc_tpg_lun_cit */
748 static struct config_group *target_fabric_make_lun(
749 struct config_group *group,
753 struct se_portal_group *se_tpg = container_of(group,
754 struct se_portal_group, tpg_lun_group);
755 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
756 unsigned long long unpacked_lun;
759 if (strstr(name, "lun_") != name) {
760 pr_err("Unable to locate \'_\" in"
761 " \"lun_$LUN_NUMBER\"\n");
762 return ERR_PTR(-EINVAL);
764 errno = kstrtoull(name + 4, 0, &unpacked_lun);
766 return ERR_PTR(errno);
768 lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
770 return ERR_CAST(lun);
772 config_group_init_type_name(&lun->lun_group, name,
773 &tf->tf_tpg_port_cit);
775 config_group_init_type_name(&lun->port_stat_grps.stat_group,
776 "statistics", &tf->tf_tpg_port_stat_cit);
777 configfs_add_default_group(&lun->port_stat_grps.stat_group,
780 target_stat_setup_port_default_groups(lun);
782 return &lun->lun_group;
785 static void target_fabric_drop_lun(
786 struct config_group *group,
787 struct config_item *item)
789 struct se_lun *lun = container_of(to_config_group(item),
790 struct se_lun, lun_group);
792 configfs_remove_default_groups(&lun->port_stat_grps.stat_group);
793 configfs_remove_default_groups(&lun->lun_group);
795 config_item_put(item);
798 static struct configfs_group_operations target_fabric_lun_group_ops = {
799 .make_group = &target_fabric_make_lun,
800 .drop_item = &target_fabric_drop_lun,
803 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
805 /* End of tfc_tpg_lun_cit */
807 TF_CIT_SETUP_DRV(tpg_attrib, NULL, NULL);
808 TF_CIT_SETUP_DRV(tpg_auth, NULL, NULL);
809 TF_CIT_SETUP_DRV(tpg_param, NULL, NULL);
811 /* Start of tfc_tpg_base_cit */
813 static void target_fabric_tpg_release(struct config_item *item)
815 struct se_portal_group *se_tpg = container_of(to_config_group(item),
816 struct se_portal_group, tpg_group);
817 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
818 struct target_fabric_configfs *tf = wwn->wwn_tf;
820 tf->tf_ops->fabric_drop_tpg(se_tpg);
823 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
824 .release = target_fabric_tpg_release,
827 TF_CIT_SETUP_DRV(tpg_base, &target_fabric_tpg_base_item_ops, NULL);
829 /* End of tfc_tpg_base_cit */
831 /* Start of tfc_tpg_cit */
833 static struct config_group *target_fabric_make_tpg(
834 struct config_group *group,
837 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
838 struct target_fabric_configfs *tf = wwn->wwn_tf;
839 struct se_portal_group *se_tpg;
841 if (!tf->tf_ops->fabric_make_tpg) {
842 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
843 return ERR_PTR(-ENOSYS);
846 se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
847 if (!se_tpg || IS_ERR(se_tpg))
848 return ERR_PTR(-EINVAL);
850 config_group_init_type_name(&se_tpg->tpg_group, name,
851 &tf->tf_tpg_base_cit);
853 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
854 &tf->tf_tpg_lun_cit);
855 configfs_add_default_group(&se_tpg->tpg_lun_group,
858 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
860 configfs_add_default_group(&se_tpg->tpg_np_group,
863 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
864 &tf->tf_tpg_nacl_cit);
865 configfs_add_default_group(&se_tpg->tpg_acl_group,
868 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
869 &tf->tf_tpg_attrib_cit);
870 configfs_add_default_group(&se_tpg->tpg_attrib_group,
873 config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
874 &tf->tf_tpg_auth_cit);
875 configfs_add_default_group(&se_tpg->tpg_auth_group,
878 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
879 &tf->tf_tpg_param_cit);
880 configfs_add_default_group(&se_tpg->tpg_param_group,
883 return &se_tpg->tpg_group;
886 static void target_fabric_drop_tpg(
887 struct config_group *group,
888 struct config_item *item)
890 struct se_portal_group *se_tpg = container_of(to_config_group(item),
891 struct se_portal_group, tpg_group);
893 configfs_remove_default_groups(&se_tpg->tpg_group);
894 config_item_put(item);
897 static void target_fabric_release_wwn(struct config_item *item)
899 struct se_wwn *wwn = container_of(to_config_group(item),
900 struct se_wwn, wwn_group);
901 struct target_fabric_configfs *tf = wwn->wwn_tf;
903 configfs_remove_default_groups(&wwn->fabric_stat_group);
904 tf->tf_ops->fabric_drop_wwn(wwn);
907 static struct configfs_item_operations target_fabric_tpg_item_ops = {
908 .release = target_fabric_release_wwn,
911 static struct configfs_group_operations target_fabric_tpg_group_ops = {
912 .make_group = target_fabric_make_tpg,
913 .drop_item = target_fabric_drop_tpg,
916 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
919 /* End of tfc_tpg_cit */
921 /* Start of tfc_wwn_fabric_stats_cit */
923 * This is used as a placeholder for struct se_wwn->fabric_stat_group
924 * to allow fabrics access to ->fabric_stat_group->default_groups[]
926 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
928 /* End of tfc_wwn_fabric_stats_cit */
930 /* Start of tfc_wwn_cit */
932 static struct config_group *target_fabric_make_wwn(
933 struct config_group *group,
936 struct target_fabric_configfs *tf = container_of(group,
937 struct target_fabric_configfs, tf_group);
940 if (!tf->tf_ops->fabric_make_wwn) {
941 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
942 return ERR_PTR(-ENOSYS);
945 wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
946 if (!wwn || IS_ERR(wwn))
947 return ERR_PTR(-EINVAL);
951 config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
953 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
954 &tf->tf_wwn_fabric_stats_cit);
955 configfs_add_default_group(&wwn->fabric_stat_group, &wwn->wwn_group);
957 if (tf->tf_ops->add_wwn_groups)
958 tf->tf_ops->add_wwn_groups(wwn);
959 return &wwn->wwn_group;
962 static void target_fabric_drop_wwn(
963 struct config_group *group,
964 struct config_item *item)
966 struct se_wwn *wwn = container_of(to_config_group(item),
967 struct se_wwn, wwn_group);
969 configfs_remove_default_groups(&wwn->wwn_group);
970 config_item_put(item);
973 static struct configfs_group_operations target_fabric_wwn_group_ops = {
974 .make_group = target_fabric_make_wwn,
975 .drop_item = target_fabric_drop_wwn,
978 TF_CIT_SETUP_DRV(wwn, NULL, &target_fabric_wwn_group_ops);
979 TF_CIT_SETUP_DRV(discovery, NULL, NULL);
981 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
983 target_fabric_setup_discovery_cit(tf);
984 target_fabric_setup_wwn_cit(tf);
985 target_fabric_setup_wwn_fabric_stats_cit(tf);
986 target_fabric_setup_tpg_cit(tf);
987 target_fabric_setup_tpg_base_cit(tf);
988 target_fabric_setup_tpg_port_cit(tf);
989 target_fabric_setup_tpg_port_stat_cit(tf);
990 target_fabric_setup_tpg_lun_cit(tf);
991 target_fabric_setup_tpg_np_cit(tf);
992 target_fabric_setup_tpg_np_base_cit(tf);
993 target_fabric_setup_tpg_attrib_cit(tf);
994 target_fabric_setup_tpg_auth_cit(tf);
995 target_fabric_setup_tpg_param_cit(tf);
996 target_fabric_setup_tpg_nacl_cit(tf);
997 target_fabric_setup_tpg_nacl_base_cit(tf);
998 target_fabric_setup_tpg_nacl_attrib_cit(tf);
999 target_fabric_setup_tpg_nacl_auth_cit(tf);
1000 target_fabric_setup_tpg_nacl_param_cit(tf);
1001 target_fabric_setup_tpg_nacl_stat_cit(tf);
1002 target_fabric_setup_tpg_mappedlun_cit(tf);
1003 target_fabric_setup_tpg_mappedlun_stat_cit(tf);