1 /*******************************************************************************
2 * Filename: target_core_fabric_configfs.c
4 * This file contains generic fabric module configfs infrastructure for
7 * Copyright (c) 2010,2011 Rising Tide Systems
8 * Copyright (c) 2010,2011 Linux-iSCSI.org
10 * Copyright (c) Nicholas A. Bellinger <nab@linux-iscsi.org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 ****************************************************************************/
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <generated/utsrelease.h>
26 #include <linux/utsname.h>
27 #include <linux/init.h>
29 #include <linux/namei.h>
30 #include <linux/slab.h>
31 #include <linux/types.h>
32 #include <linux/delay.h>
33 #include <linux/unistd.h>
34 #include <linux/string.h>
35 #include <linux/syscalls.h>
36 #include <linux/configfs.h>
38 #include <target/target_core_base.h>
39 #include <target/target_core_fabric.h>
40 #include <target/target_core_fabric_configfs.h>
41 #include <target/target_core_configfs.h>
42 #include <target/configfs_macros.h>
44 #include "target_core_internal.h"
45 #include "target_core_alua.h"
46 #include "target_core_pr.h"
48 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
49 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
51 struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \
52 struct config_item_type *cit = &tfc->tfc_##_name##_cit; \
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_module; \
58 pr_debug("Setup generic %s\n", __stringify(_name)); \
61 /* Start of tfc_tpg_mappedlun_cit */
63 static int target_fabric_mappedlun_link(
64 struct config_item *lun_acl_ci,
65 struct config_item *lun_ci)
67 struct se_dev_entry *deve;
68 struct se_lun *lun = container_of(to_config_group(lun_ci),
69 struct se_lun, lun_group);
70 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
71 struct se_lun_acl, se_lun_group);
72 struct se_portal_group *se_tpg;
73 struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
74 int ret = 0, lun_access;
76 * Ensure that the source port exists
78 if (!lun->lun_sep || !lun->lun_sep->sep_tpg) {
79 pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
80 "_tpg does not exist\n");
83 se_tpg = lun->lun_sep->sep_tpg;
85 nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
86 tpg_ci = &nacl_ci->ci_group->cg_item;
87 wwn_ci = &tpg_ci->ci_group->cg_item;
88 tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
89 wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
91 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
93 if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
94 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
95 config_item_name(wwn_ci));
98 if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
99 pr_err("Illegal Initiator ACL Symlink outside of %s"
100 " TPGT: %s\n", config_item_name(wwn_ci),
101 config_item_name(tpg_ci));
105 * If this struct se_node_acl was dynamically generated with
106 * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
107 * which be will write protected (READ-ONLY) when
108 * tpg_1/attrib/demo_mode_write_protect=1
110 spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
111 deve = lacl->se_lun_nacl->device_list[lacl->mapped_lun];
112 if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
113 lun_access = deve->lun_flags;
116 (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
117 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
118 TRANSPORT_LUNFLAGS_READ_WRITE;
119 spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
121 * Determine the actual mapped LUN value user wants..
123 * This value is what the SCSI Initiator actually sees the
124 * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
126 ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
127 lun->unpacked_lun, lun_access);
129 return (ret < 0) ? -EINVAL : 0;
132 static int target_fabric_mappedlun_unlink(
133 struct config_item *lun_acl_ci,
134 struct config_item *lun_ci)
137 struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
138 struct se_lun_acl, se_lun_group);
139 struct se_node_acl *nacl = lacl->se_lun_nacl;
140 struct se_dev_entry *deve = nacl->device_list[lacl->mapped_lun];
141 struct se_portal_group *se_tpg;
143 * Determine if the underlying MappedLUN has already been released..
148 lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
149 se_tpg = lun->lun_sep->sep_tpg;
151 core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
155 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
156 #define TCM_MAPPEDLUN_ATTR(_name, _mode) \
157 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
158 __CONFIGFS_EATTR(_name, _mode, \
159 target_fabric_mappedlun_show_##_name, \
160 target_fabric_mappedlun_store_##_name);
162 static ssize_t target_fabric_mappedlun_show_write_protect(
163 struct se_lun_acl *lacl,
166 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
167 struct se_dev_entry *deve;
170 spin_lock_irq(&se_nacl->device_list_lock);
171 deve = se_nacl->device_list[lacl->mapped_lun];
172 len = sprintf(page, "%d\n",
173 (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
175 spin_unlock_irq(&se_nacl->device_list_lock);
180 static ssize_t target_fabric_mappedlun_store_write_protect(
181 struct se_lun_acl *lacl,
185 struct se_node_acl *se_nacl = lacl->se_lun_nacl;
186 struct se_portal_group *se_tpg = se_nacl->se_tpg;
189 if (strict_strtoul(page, 0, &op))
192 if ((op != 1) && (op != 0))
195 core_update_device_list_access(lacl->mapped_lun, (op) ?
196 TRANSPORT_LUNFLAGS_READ_ONLY :
197 TRANSPORT_LUNFLAGS_READ_WRITE,
200 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
201 " Mapped LUN: %u Write Protect bit to %s\n",
202 se_tpg->se_tpg_tfo->get_fabric_name(),
203 lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
209 TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
211 CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
213 static void target_fabric_mappedlun_release(struct config_item *item)
215 struct se_lun_acl *lacl = container_of(to_config_group(item),
216 struct se_lun_acl, se_lun_group);
217 struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
219 core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
222 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
223 &target_fabric_mappedlun_write_protect.attr,
227 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
228 .release = target_fabric_mappedlun_release,
229 .show_attribute = target_fabric_mappedlun_attr_show,
230 .store_attribute = target_fabric_mappedlun_attr_store,
231 .allow_link = target_fabric_mappedlun_link,
232 .drop_link = target_fabric_mappedlun_unlink,
235 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
236 target_fabric_mappedlun_attrs);
238 /* End of tfc_tpg_mappedlun_cit */
240 /* Start of tfc_tpg_mappedlun_port_cit */
242 static struct config_group *target_core_mappedlun_stat_mkdir(
243 struct config_group *group,
246 return ERR_PTR(-ENOSYS);
249 static void target_core_mappedlun_stat_rmdir(
250 struct config_group *group,
251 struct config_item *item)
256 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
257 .make_group = target_core_mappedlun_stat_mkdir,
258 .drop_item = target_core_mappedlun_stat_rmdir,
261 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
264 /* End of tfc_tpg_mappedlun_port_cit */
266 /* Start of tfc_tpg_nacl_attrib_cit */
268 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
270 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
271 .show_attribute = target_fabric_nacl_attrib_attr_show,
272 .store_attribute = target_fabric_nacl_attrib_attr_store,
275 TF_CIT_SETUP(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, NULL);
277 /* End of tfc_tpg_nacl_attrib_cit */
279 /* Start of tfc_tpg_nacl_auth_cit */
281 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
283 static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
284 .show_attribute = target_fabric_nacl_auth_attr_show,
285 .store_attribute = target_fabric_nacl_auth_attr_store,
288 TF_CIT_SETUP(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, NULL);
290 /* End of tfc_tpg_nacl_auth_cit */
292 /* Start of tfc_tpg_nacl_param_cit */
294 CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
296 static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
297 .show_attribute = target_fabric_nacl_param_attr_show,
298 .store_attribute = target_fabric_nacl_param_attr_store,
301 TF_CIT_SETUP(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, NULL);
303 /* End of tfc_tpg_nacl_param_cit */
305 /* Start of tfc_tpg_nacl_base_cit */
307 CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
309 static struct config_group *target_fabric_make_mappedlun(
310 struct config_group *group,
313 struct se_node_acl *se_nacl = container_of(group,
314 struct se_node_acl, acl_group);
315 struct se_portal_group *se_tpg = se_nacl->se_tpg;
316 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
317 struct se_lun_acl *lacl;
318 struct config_item *acl_ci;
319 struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
321 unsigned long mapped_lun;
324 acl_ci = &group->cg_item;
326 pr_err("Unable to locatel acl_ci\n");
330 buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
332 pr_err("Unable to allocate memory for name buf\n");
333 return ERR_PTR(-ENOMEM);
335 snprintf(buf, strlen(name) + 1, "%s", name);
337 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
339 if (strstr(buf, "lun_") != buf) {
340 pr_err("Unable to locate \"lun_\" from buf: %s"
341 " name: %s\n", buf, name);
346 * Determine the Mapped LUN value. This is what the SCSI Initiator
347 * Port will actually see.
349 if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) {
354 lacl = core_dev_init_initiator_node_lun_acl(se_tpg, mapped_lun,
355 config_item_name(acl_ci), &ret);
361 lacl_cg = &lacl->se_lun_group;
362 lacl_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
364 if (!lacl_cg->default_groups) {
365 pr_err("Unable to allocate lacl_cg->default_groups\n");
370 config_group_init_type_name(&lacl->se_lun_group, name,
371 &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
372 config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
373 "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
374 lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
375 lacl_cg->default_groups[1] = NULL;
377 ml_stat_grp = &lacl->ml_stat_grps.stat_group;
378 ml_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
380 if (!ml_stat_grp->default_groups) {
381 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
385 target_stat_setup_mappedlun_default_groups(lacl);
388 return &lacl->se_lun_group;
391 kfree(lacl_cg->default_groups);
396 static void target_fabric_drop_mappedlun(
397 struct config_group *group,
398 struct config_item *item)
400 struct se_lun_acl *lacl = container_of(to_config_group(item),
401 struct se_lun_acl, se_lun_group);
402 struct config_item *df_item;
403 struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
406 ml_stat_grp = &lacl->ml_stat_grps.stat_group;
407 for (i = 0; ml_stat_grp->default_groups[i]; i++) {
408 df_item = &ml_stat_grp->default_groups[i]->cg_item;
409 ml_stat_grp->default_groups[i] = NULL;
410 config_item_put(df_item);
412 kfree(ml_stat_grp->default_groups);
414 lacl_cg = &lacl->se_lun_group;
415 for (i = 0; lacl_cg->default_groups[i]; i++) {
416 df_item = &lacl_cg->default_groups[i]->cg_item;
417 lacl_cg->default_groups[i] = NULL;
418 config_item_put(df_item);
420 kfree(lacl_cg->default_groups);
422 config_item_put(item);
425 static void target_fabric_nacl_base_release(struct config_item *item)
427 struct se_node_acl *se_nacl = container_of(to_config_group(item),
428 struct se_node_acl, acl_group);
429 struct se_portal_group *se_tpg = se_nacl->se_tpg;
430 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
432 tf->tf_ops.fabric_drop_nodeacl(se_nacl);
435 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
436 .release = target_fabric_nacl_base_release,
437 .show_attribute = target_fabric_nacl_base_attr_show,
438 .store_attribute = target_fabric_nacl_base_attr_store,
441 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
442 .make_group = target_fabric_make_mappedlun,
443 .drop_item = target_fabric_drop_mappedlun,
446 TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
447 &target_fabric_nacl_base_group_ops, NULL);
449 /* End of tfc_tpg_nacl_base_cit */
451 /* Start of tfc_node_fabric_stats_cit */
453 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
454 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
456 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
458 /* End of tfc_wwn_fabric_stats_cit */
460 /* Start of tfc_tpg_nacl_cit */
462 static struct config_group *target_fabric_make_nodeacl(
463 struct config_group *group,
466 struct se_portal_group *se_tpg = container_of(group,
467 struct se_portal_group, tpg_acl_group);
468 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
469 struct se_node_acl *se_nacl;
470 struct config_group *nacl_cg;
472 if (!tf->tf_ops.fabric_make_nodeacl) {
473 pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n");
474 return ERR_PTR(-ENOSYS);
477 se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name);
479 return ERR_CAST(se_nacl);
481 nacl_cg = &se_nacl->acl_group;
482 nacl_cg->default_groups = se_nacl->acl_default_groups;
483 nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
484 nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
485 nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
486 nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
487 nacl_cg->default_groups[4] = NULL;
489 config_group_init_type_name(&se_nacl->acl_group, name,
490 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
491 config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
492 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
493 config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
494 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
495 config_group_init_type_name(&se_nacl->acl_param_group, "param",
496 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
497 config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
499 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
501 return &se_nacl->acl_group;
504 static void target_fabric_drop_nodeacl(
505 struct config_group *group,
506 struct config_item *item)
508 struct se_node_acl *se_nacl = container_of(to_config_group(item),
509 struct se_node_acl, acl_group);
510 struct config_item *df_item;
511 struct config_group *nacl_cg;
514 nacl_cg = &se_nacl->acl_group;
515 for (i = 0; nacl_cg->default_groups[i]; i++) {
516 df_item = &nacl_cg->default_groups[i]->cg_item;
517 nacl_cg->default_groups[i] = NULL;
518 config_item_put(df_item);
521 * struct se_node_acl free is done in target_fabric_nacl_base_release()
523 config_item_put(item);
526 static struct configfs_group_operations target_fabric_nacl_group_ops = {
527 .make_group = target_fabric_make_nodeacl,
528 .drop_item = target_fabric_drop_nodeacl,
531 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
533 /* End of tfc_tpg_nacl_cit */
535 /* Start of tfc_tpg_np_base_cit */
537 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
539 static void target_fabric_np_base_release(struct config_item *item)
541 struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
542 struct se_tpg_np, tpg_np_group);
543 struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
544 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
546 tf->tf_ops.fabric_drop_np(se_tpg_np);
549 static struct configfs_item_operations target_fabric_np_base_item_ops = {
550 .release = target_fabric_np_base_release,
551 .show_attribute = target_fabric_np_base_attr_show,
552 .store_attribute = target_fabric_np_base_attr_store,
555 TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL);
557 /* End of tfc_tpg_np_base_cit */
559 /* Start of tfc_tpg_np_cit */
561 static struct config_group *target_fabric_make_np(
562 struct config_group *group,
565 struct se_portal_group *se_tpg = container_of(group,
566 struct se_portal_group, tpg_np_group);
567 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
568 struct se_tpg_np *se_tpg_np;
570 if (!tf->tf_ops.fabric_make_np) {
571 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
572 return ERR_PTR(-ENOSYS);
575 se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name);
576 if (!se_tpg_np || IS_ERR(se_tpg_np))
577 return ERR_PTR(-EINVAL);
579 se_tpg_np->tpg_np_parent = se_tpg;
580 config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
581 &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
583 return &se_tpg_np->tpg_np_group;
586 static void target_fabric_drop_np(
587 struct config_group *group,
588 struct config_item *item)
591 * struct se_tpg_np is released via target_fabric_np_base_release()
593 config_item_put(item);
596 static struct configfs_group_operations target_fabric_np_group_ops = {
597 .make_group = &target_fabric_make_np,
598 .drop_item = &target_fabric_drop_np,
601 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
603 /* End of tfc_tpg_np_cit */
605 /* Start of tfc_tpg_port_cit */
607 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
608 #define TCM_PORT_ATTR(_name, _mode) \
609 static struct target_fabric_port_attribute target_fabric_port_##_name = \
610 __CONFIGFS_EATTR(_name, _mode, \
611 target_fabric_port_show_attr_##_name, \
612 target_fabric_port_store_attr_##_name);
614 #define TCM_PORT_ATTOR_RO(_name) \
615 __CONFIGFS_EATTR_RO(_name, \
616 target_fabric_port_show_attr_##_name);
621 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
625 if (!lun || !lun->lun_sep)
628 return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
631 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
636 if (!lun || !lun->lun_sep)
639 return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
642 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
647 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
651 if (!lun || !lun->lun_sep)
654 return core_alua_show_offline_bit(lun, page);
657 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
662 if (!lun || !lun->lun_sep)
665 return core_alua_store_offline_bit(lun, page, count);
668 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
673 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
677 if (!lun || !lun->lun_sep)
680 return core_alua_show_secondary_status(lun, page);
683 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
688 if (!lun || !lun->lun_sep)
691 return core_alua_store_secondary_status(lun, page, count);
694 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
697 * alua_tg_pt_write_md
699 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
703 if (!lun || !lun->lun_sep)
706 return core_alua_show_secondary_write_metadata(lun, page);
709 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
714 if (!lun || !lun->lun_sep)
717 return core_alua_store_secondary_write_metadata(lun, page, count);
720 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
723 static struct configfs_attribute *target_fabric_port_attrs[] = {
724 &target_fabric_port_alua_tg_pt_gp.attr,
725 &target_fabric_port_alua_tg_pt_offline.attr,
726 &target_fabric_port_alua_tg_pt_status.attr,
727 &target_fabric_port_alua_tg_pt_write_md.attr,
731 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
733 static int target_fabric_port_link(
734 struct config_item *lun_ci,
735 struct config_item *se_dev_ci)
737 struct config_item *tpg_ci;
738 struct se_device *dev;
739 struct se_lun *lun = container_of(to_config_group(lun_ci),
740 struct se_lun, lun_group);
741 struct se_lun *lun_p;
742 struct se_portal_group *se_tpg;
743 struct se_subsystem_dev *se_dev = container_of(
744 to_config_group(se_dev_ci), struct se_subsystem_dev,
746 struct target_fabric_configfs *tf;
749 tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
750 se_tpg = container_of(to_config_group(tpg_ci),
751 struct se_portal_group, tpg_group);
752 tf = se_tpg->se_tpg_wwn->wwn_tf;
754 if (lun->lun_se_dev != NULL) {
755 pr_err("Port Symlink already exists\n");
759 dev = se_dev->se_dev_ptr;
761 pr_err("Unable to locate struct se_device pointer from"
762 " %s\n", config_item_name(se_dev_ci));
767 lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun);
769 pr_err("core_dev_add_lun() failed\n");
770 ret = PTR_ERR(lun_p);
774 if (tf->tf_ops.fabric_post_link) {
776 * Call the optional fabric_post_link() to allow a
777 * fabric module to setup any additional state once
778 * core_dev_add_lun() has been called..
780 tf->tf_ops.fabric_post_link(se_tpg, lun);
788 static int target_fabric_port_unlink(
789 struct config_item *lun_ci,
790 struct config_item *se_dev_ci)
792 struct se_lun *lun = container_of(to_config_group(lun_ci),
793 struct se_lun, lun_group);
794 struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
795 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
797 if (tf->tf_ops.fabric_pre_unlink) {
799 * Call the optional fabric_pre_unlink() to allow a
800 * fabric module to release any additional stat before
801 * core_dev_del_lun() is called.
803 tf->tf_ops.fabric_pre_unlink(se_tpg, lun);
806 core_dev_del_lun(se_tpg, lun->unpacked_lun);
810 static struct configfs_item_operations target_fabric_port_item_ops = {
811 .show_attribute = target_fabric_port_attr_show,
812 .store_attribute = target_fabric_port_attr_store,
813 .allow_link = target_fabric_port_link,
814 .drop_link = target_fabric_port_unlink,
817 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
819 /* End of tfc_tpg_port_cit */
821 /* Start of tfc_tpg_port_stat_cit */
823 static struct config_group *target_core_port_stat_mkdir(
824 struct config_group *group,
827 return ERR_PTR(-ENOSYS);
830 static void target_core_port_stat_rmdir(
831 struct config_group *group,
832 struct config_item *item)
837 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
838 .make_group = target_core_port_stat_mkdir,
839 .drop_item = target_core_port_stat_rmdir,
842 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
844 /* End of tfc_tpg_port_stat_cit */
846 /* Start of tfc_tpg_lun_cit */
848 static struct config_group *target_fabric_make_lun(
849 struct config_group *group,
853 struct se_portal_group *se_tpg = container_of(group,
854 struct se_portal_group, tpg_lun_group);
855 struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
856 struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
857 unsigned long unpacked_lun;
860 if (strstr(name, "lun_") != name) {
861 pr_err("Unable to locate \'_\" in"
862 " \"lun_$LUN_NUMBER\"\n");
863 return ERR_PTR(-EINVAL);
865 if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX)
866 return ERR_PTR(-EINVAL);
868 lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
870 return ERR_PTR(-EINVAL);
872 lun_cg = &lun->lun_group;
873 lun_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
875 if (!lun_cg->default_groups) {
876 pr_err("Unable to allocate lun_cg->default_groups\n");
877 return ERR_PTR(-ENOMEM);
880 config_group_init_type_name(&lun->lun_group, name,
881 &TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
882 config_group_init_type_name(&lun->port_stat_grps.stat_group,
883 "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
884 lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
885 lun_cg->default_groups[1] = NULL;
887 port_stat_grp = &lun->port_stat_grps.stat_group;
888 port_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
890 if (!port_stat_grp->default_groups) {
891 pr_err("Unable to allocate port_stat_grp->default_groups\n");
895 target_stat_setup_port_default_groups(lun);
897 return &lun->lun_group;
900 kfree(lun_cg->default_groups);
901 return ERR_PTR(errno);
904 static void target_fabric_drop_lun(
905 struct config_group *group,
906 struct config_item *item)
908 struct se_lun *lun = container_of(to_config_group(item),
909 struct se_lun, lun_group);
910 struct config_item *df_item;
911 struct config_group *lun_cg, *port_stat_grp;
914 port_stat_grp = &lun->port_stat_grps.stat_group;
915 for (i = 0; port_stat_grp->default_groups[i]; i++) {
916 df_item = &port_stat_grp->default_groups[i]->cg_item;
917 port_stat_grp->default_groups[i] = NULL;
918 config_item_put(df_item);
920 kfree(port_stat_grp->default_groups);
922 lun_cg = &lun->lun_group;
923 for (i = 0; lun_cg->default_groups[i]; i++) {
924 df_item = &lun_cg->default_groups[i]->cg_item;
925 lun_cg->default_groups[i] = NULL;
926 config_item_put(df_item);
928 kfree(lun_cg->default_groups);
930 config_item_put(item);
933 static struct configfs_group_operations target_fabric_lun_group_ops = {
934 .make_group = &target_fabric_make_lun,
935 .drop_item = &target_fabric_drop_lun,
938 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
940 /* End of tfc_tpg_lun_cit */
942 /* Start of tfc_tpg_attrib_cit */
944 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
946 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
947 .show_attribute = target_fabric_tpg_attrib_attr_show,
948 .store_attribute = target_fabric_tpg_attrib_attr_store,
951 TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
953 /* End of tfc_tpg_attrib_cit */
955 /* Start of tfc_tpg_param_cit */
957 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
959 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
960 .show_attribute = target_fabric_tpg_param_attr_show,
961 .store_attribute = target_fabric_tpg_param_attr_store,
964 TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL);
966 /* End of tfc_tpg_param_cit */
968 /* Start of tfc_tpg_base_cit */
970 * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
972 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
974 static void target_fabric_tpg_release(struct config_item *item)
976 struct se_portal_group *se_tpg = container_of(to_config_group(item),
977 struct se_portal_group, tpg_group);
978 struct se_wwn *wwn = se_tpg->se_tpg_wwn;
979 struct target_fabric_configfs *tf = wwn->wwn_tf;
981 tf->tf_ops.fabric_drop_tpg(se_tpg);
984 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
985 .release = target_fabric_tpg_release,
986 .show_attribute = target_fabric_tpg_attr_show,
987 .store_attribute = target_fabric_tpg_attr_store,
990 TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL);
992 /* End of tfc_tpg_base_cit */
994 /* Start of tfc_tpg_cit */
996 static struct config_group *target_fabric_make_tpg(
997 struct config_group *group,
1000 struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1001 struct target_fabric_configfs *tf = wwn->wwn_tf;
1002 struct se_portal_group *se_tpg;
1004 if (!tf->tf_ops.fabric_make_tpg) {
1005 pr_err("tf->tf_ops.fabric_make_tpg is NULL\n");
1006 return ERR_PTR(-ENOSYS);
1009 se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name);
1010 if (!se_tpg || IS_ERR(se_tpg))
1011 return ERR_PTR(-EINVAL);
1013 * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1015 se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1016 se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1017 se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1018 se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1019 se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1020 se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
1021 se_tpg->tpg_group.default_groups[5] = NULL;
1023 config_group_init_type_name(&se_tpg->tpg_group, name,
1024 &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
1025 config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1026 &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
1027 config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1028 &TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
1029 config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1030 &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
1031 config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1032 &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
1033 config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1034 &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
1036 return &se_tpg->tpg_group;
1039 static void target_fabric_drop_tpg(
1040 struct config_group *group,
1041 struct config_item *item)
1043 struct se_portal_group *se_tpg = container_of(to_config_group(item),
1044 struct se_portal_group, tpg_group);
1045 struct config_group *tpg_cg = &se_tpg->tpg_group;
1046 struct config_item *df_item;
1049 * Release default groups, but do not release tpg_cg->default_groups
1050 * memory as it is statically allocated at se_tpg->tpg_default_groups.
1052 for (i = 0; tpg_cg->default_groups[i]; i++) {
1053 df_item = &tpg_cg->default_groups[i]->cg_item;
1054 tpg_cg->default_groups[i] = NULL;
1055 config_item_put(df_item);
1058 config_item_put(item);
1061 static void target_fabric_release_wwn(struct config_item *item)
1063 struct se_wwn *wwn = container_of(to_config_group(item),
1064 struct se_wwn, wwn_group);
1065 struct target_fabric_configfs *tf = wwn->wwn_tf;
1067 tf->tf_ops.fabric_drop_wwn(wwn);
1070 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1071 .release = target_fabric_release_wwn,
1074 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1075 .make_group = target_fabric_make_tpg,
1076 .drop_item = target_fabric_drop_tpg,
1079 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1082 /* End of tfc_tpg_cit */
1084 /* Start of tfc_wwn_fabric_stats_cit */
1086 * This is used as a placeholder for struct se_wwn->fabric_stat_group
1087 * to allow fabrics access to ->fabric_stat_group->default_groups[]
1089 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1091 /* End of tfc_wwn_fabric_stats_cit */
1093 /* Start of tfc_wwn_cit */
1095 static struct config_group *target_fabric_make_wwn(
1096 struct config_group *group,
1099 struct target_fabric_configfs *tf = container_of(group,
1100 struct target_fabric_configfs, tf_group);
1103 if (!tf->tf_ops.fabric_make_wwn) {
1104 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1105 return ERR_PTR(-ENOSYS);
1108 wwn = tf->tf_ops.fabric_make_wwn(tf, group, name);
1109 if (!wwn || IS_ERR(wwn))
1110 return ERR_PTR(-EINVAL);
1114 * Setup default groups from pre-allocated wwn->wwn_default_groups
1116 wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1117 wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1118 wwn->wwn_group.default_groups[1] = NULL;
1120 config_group_init_type_name(&wwn->wwn_group, name,
1121 &TF_CIT_TMPL(tf)->tfc_tpg_cit);
1122 config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1123 &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
1125 return &wwn->wwn_group;
1128 static void target_fabric_drop_wwn(
1129 struct config_group *group,
1130 struct config_item *item)
1132 struct se_wwn *wwn = container_of(to_config_group(item),
1133 struct se_wwn, wwn_group);
1134 struct config_item *df_item;
1135 struct config_group *cg = &wwn->wwn_group;
1138 for (i = 0; cg->default_groups[i]; i++) {
1139 df_item = &cg->default_groups[i]->cg_item;
1140 cg->default_groups[i] = NULL;
1141 config_item_put(df_item);
1144 config_item_put(item);
1147 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1148 .make_group = target_fabric_make_wwn,
1149 .drop_item = target_fabric_drop_wwn,
1152 * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1154 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1156 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1157 .show_attribute = target_fabric_wwn_attr_show,
1158 .store_attribute = target_fabric_wwn_attr_store,
1161 TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL);
1163 /* End of tfc_wwn_cit */
1165 /* Start of tfc_discovery_cit */
1167 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1170 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1171 .show_attribute = target_fabric_discovery_attr_show,
1172 .store_attribute = target_fabric_discovery_attr_store,
1175 TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL);
1177 /* End of tfc_discovery_cit */
1179 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1181 target_fabric_setup_discovery_cit(tf);
1182 target_fabric_setup_wwn_cit(tf);
1183 target_fabric_setup_wwn_fabric_stats_cit(tf);
1184 target_fabric_setup_tpg_cit(tf);
1185 target_fabric_setup_tpg_base_cit(tf);
1186 target_fabric_setup_tpg_port_cit(tf);
1187 target_fabric_setup_tpg_port_stat_cit(tf);
1188 target_fabric_setup_tpg_lun_cit(tf);
1189 target_fabric_setup_tpg_np_cit(tf);
1190 target_fabric_setup_tpg_np_base_cit(tf);
1191 target_fabric_setup_tpg_attrib_cit(tf);
1192 target_fabric_setup_tpg_param_cit(tf);
1193 target_fabric_setup_tpg_nacl_cit(tf);
1194 target_fabric_setup_tpg_nacl_base_cit(tf);
1195 target_fabric_setup_tpg_nacl_attrib_cit(tf);
1196 target_fabric_setup_tpg_nacl_auth_cit(tf);
1197 target_fabric_setup_tpg_nacl_param_cit(tf);
1198 target_fabric_setup_tpg_nacl_stat_cit(tf);
1199 target_fabric_setup_tpg_mappedlun_cit(tf);
1200 target_fabric_setup_tpg_mappedlun_stat_cit(tf);