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 /* Start of tfc_tpg_mappedlun_cit */
70 static int target_fabric_mappedlun_link(
71 struct config_item
*lun_acl_ci
,
72 struct config_item
*lun_ci
)
74 struct se_dev_entry
*deve
;
75 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
76 struct se_lun
, lun_group
);
77 struct se_lun_acl
*lacl
= container_of(to_config_group(lun_acl_ci
),
78 struct se_lun_acl
, se_lun_group
);
79 struct se_portal_group
*se_tpg
;
80 struct config_item
*nacl_ci
, *tpg_ci
, *tpg_ci_s
, *wwn_ci
, *wwn_ci_s
;
83 if (lun
->lun_link_magic
!= SE_LUN_LINK_MAGIC
) {
84 pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
85 " %p to struct lun: %p\n", lun_ci
, lun
);
89 * Ensure that the source port exists
91 if (!lun
->lun_se_dev
) {
92 pr_err("Source se_lun->lun_se_dev does not exist\n");
95 se_tpg
= lun
->lun_tpg
;
97 nacl_ci
= &lun_acl_ci
->ci_parent
->ci_group
->cg_item
;
98 tpg_ci
= &nacl_ci
->ci_group
->cg_item
;
99 wwn_ci
= &tpg_ci
->ci_group
->cg_item
;
100 tpg_ci_s
= &lun_ci
->ci_parent
->ci_group
->cg_item
;
101 wwn_ci_s
= &tpg_ci_s
->ci_group
->cg_item
;
103 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
105 if (strcmp(config_item_name(wwn_ci
), config_item_name(wwn_ci_s
))) {
106 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
107 config_item_name(wwn_ci
));
110 if (strcmp(config_item_name(tpg_ci
), config_item_name(tpg_ci_s
))) {
111 pr_err("Illegal Initiator ACL Symlink outside of %s"
112 " TPGT: %s\n", config_item_name(wwn_ci
),
113 config_item_name(tpg_ci
));
117 * If this struct se_node_acl was dynamically generated with
118 * tpg_1/attrib/generate_node_acls=1, use the existing
119 * deve->lun_access_ro value, which will be true when
120 * tpg_1/attrib/demo_mode_write_protect=1
123 deve
= target_nacl_find_deve(lacl
->se_lun_nacl
, lacl
->mapped_lun
);
125 lun_access_ro
= deve
->lun_access_ro
;
128 (se_tpg
->se_tpg_tfo
->tpg_check_prod_mode_write_protect(
129 se_tpg
)) ? true : false;
132 * Determine the actual mapped LUN value user wants..
134 * This value is what the SCSI Initiator actually sees the
135 * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
137 return core_dev_add_initiator_node_lun_acl(se_tpg
, lacl
, lun
, lun_access_ro
);
140 static int target_fabric_mappedlun_unlink(
141 struct config_item
*lun_acl_ci
,
142 struct config_item
*lun_ci
)
144 struct se_lun_acl
*lacl
= container_of(to_config_group(lun_acl_ci
),
145 struct se_lun_acl
, se_lun_group
);
146 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
147 struct se_lun
, lun_group
);
149 return core_dev_del_initiator_node_lun_acl(lun
, lacl
);
152 static struct se_lun_acl
*item_to_lun_acl(struct config_item
*item
)
154 return container_of(to_config_group(item
), struct se_lun_acl
,
158 static ssize_t
target_fabric_mappedlun_write_protect_show(
159 struct config_item
*item
, char *page
)
161 struct se_lun_acl
*lacl
= item_to_lun_acl(item
);
162 struct se_node_acl
*se_nacl
= lacl
->se_lun_nacl
;
163 struct se_dev_entry
*deve
;
167 deve
= target_nacl_find_deve(se_nacl
, lacl
->mapped_lun
);
169 len
= sprintf(page
, "%d\n", deve
->lun_access_ro
);
176 static ssize_t
target_fabric_mappedlun_write_protect_store(
177 struct config_item
*item
, const char *page
, size_t count
)
179 struct se_lun_acl
*lacl
= item_to_lun_acl(item
);
180 struct se_node_acl
*se_nacl
= lacl
->se_lun_nacl
;
181 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
185 ret
= kstrtoul(page
, 0, &wp
);
189 if ((wp
!= 1) && (wp
!= 0))
192 /* wp=1 means lun_access_ro=true */
193 core_update_device_list_access(lacl
->mapped_lun
, wp
, lacl
->se_lun_nacl
);
195 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
196 " Mapped LUN: %llu Write Protect bit to %s\n",
197 se_tpg
->se_tpg_tfo
->get_fabric_name(),
198 se_nacl
->initiatorname
, lacl
->mapped_lun
, (wp
) ? "ON" : "OFF");
204 CONFIGFS_ATTR(target_fabric_mappedlun_
, write_protect
);
206 static struct configfs_attribute
*target_fabric_mappedlun_attrs
[] = {
207 &target_fabric_mappedlun_attr_write_protect
,
211 static void target_fabric_mappedlun_release(struct config_item
*item
)
213 struct se_lun_acl
*lacl
= container_of(to_config_group(item
),
214 struct se_lun_acl
, se_lun_group
);
215 struct se_portal_group
*se_tpg
= lacl
->se_lun_nacl
->se_tpg
;
217 core_dev_free_initiator_node_lun_acl(se_tpg
, lacl
);
220 static struct configfs_item_operations target_fabric_mappedlun_item_ops
= {
221 .release
= target_fabric_mappedlun_release
,
222 .allow_link
= target_fabric_mappedlun_link
,
223 .drop_link
= target_fabric_mappedlun_unlink
,
226 TF_CIT_SETUP(tpg_mappedlun
, &target_fabric_mappedlun_item_ops
, NULL
,
227 target_fabric_mappedlun_attrs
);
229 /* End of tfc_tpg_mappedlun_cit */
231 /* Start of tfc_tpg_mappedlun_port_cit */
233 static struct config_group
*target_core_mappedlun_stat_mkdir(
234 struct config_group
*group
,
237 return ERR_PTR(-ENOSYS
);
240 static void target_core_mappedlun_stat_rmdir(
241 struct config_group
*group
,
242 struct config_item
*item
)
247 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops
= {
248 .make_group
= target_core_mappedlun_stat_mkdir
,
249 .drop_item
= target_core_mappedlun_stat_rmdir
,
252 TF_CIT_SETUP(tpg_mappedlun_stat
, NULL
, &target_fabric_mappedlun_stat_group_ops
,
255 /* End of tfc_tpg_mappedlun_port_cit */
257 TF_CIT_SETUP_DRV(tpg_nacl_attrib
, NULL
, NULL
);
258 TF_CIT_SETUP_DRV(tpg_nacl_auth
, NULL
, NULL
);
259 TF_CIT_SETUP_DRV(tpg_nacl_param
, NULL
, NULL
);
261 /* Start of tfc_tpg_nacl_base_cit */
263 static struct config_group
*target_fabric_make_mappedlun(
264 struct config_group
*group
,
267 struct se_node_acl
*se_nacl
= container_of(group
,
268 struct se_node_acl
, acl_group
);
269 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
270 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
271 struct se_lun_acl
*lacl
= NULL
;
273 unsigned long long mapped_lun
;
276 buf
= kzalloc(strlen(name
) + 1, GFP_KERNEL
);
278 pr_err("Unable to allocate memory for name buf\n");
279 return ERR_PTR(-ENOMEM
);
281 snprintf(buf
, strlen(name
) + 1, "%s", name
);
283 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
285 if (strstr(buf
, "lun_") != buf
) {
286 pr_err("Unable to locate \"lun_\" from buf: %s"
287 " name: %s\n", buf
, name
);
292 * Determine the Mapped LUN value. This is what the SCSI Initiator
293 * Port will actually see.
295 ret
= kstrtoull(buf
+ 4, 0, &mapped_lun
);
299 lacl
= core_dev_init_initiator_node_lun_acl(se_tpg
, se_nacl
,
306 config_group_init_type_name(&lacl
->se_lun_group
, name
,
307 &tf
->tf_tpg_mappedlun_cit
);
309 config_group_init_type_name(&lacl
->ml_stat_grps
.stat_group
,
310 "statistics", &tf
->tf_tpg_mappedlun_stat_cit
);
311 configfs_add_default_group(&lacl
->ml_stat_grps
.stat_group
,
312 &lacl
->se_lun_group
);
314 target_stat_setup_mappedlun_default_groups(lacl
);
317 return &lacl
->se_lun_group
;
324 static void target_fabric_drop_mappedlun(
325 struct config_group
*group
,
326 struct config_item
*item
)
328 struct se_lun_acl
*lacl
= container_of(to_config_group(item
),
329 struct se_lun_acl
, se_lun_group
);
331 configfs_remove_default_groups(&lacl
->ml_stat_grps
.stat_group
);
332 configfs_remove_default_groups(&lacl
->se_lun_group
);
334 config_item_put(item
);
337 static void target_fabric_nacl_base_release(struct config_item
*item
)
339 struct se_node_acl
*se_nacl
= container_of(to_config_group(item
),
340 struct se_node_acl
, acl_group
);
341 struct target_fabric_configfs
*tf
= se_nacl
->se_tpg
->se_tpg_wwn
->wwn_tf
;
343 if (tf
->tf_ops
->fabric_cleanup_nodeacl
)
344 tf
->tf_ops
->fabric_cleanup_nodeacl(se_nacl
);
345 core_tpg_del_initiator_node_acl(se_nacl
);
348 static struct configfs_item_operations target_fabric_nacl_base_item_ops
= {
349 .release
= target_fabric_nacl_base_release
,
352 static struct configfs_group_operations target_fabric_nacl_base_group_ops
= {
353 .make_group
= target_fabric_make_mappedlun
,
354 .drop_item
= target_fabric_drop_mappedlun
,
357 TF_CIT_SETUP_DRV(tpg_nacl_base
, &target_fabric_nacl_base_item_ops
,
358 &target_fabric_nacl_base_group_ops
);
360 /* End of tfc_tpg_nacl_base_cit */
362 /* Start of tfc_node_fabric_stats_cit */
364 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
365 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
367 TF_CIT_SETUP(tpg_nacl_stat
, NULL
, NULL
, NULL
);
369 /* End of tfc_wwn_fabric_stats_cit */
371 /* Start of tfc_tpg_nacl_cit */
373 static struct config_group
*target_fabric_make_nodeacl(
374 struct config_group
*group
,
377 struct se_portal_group
*se_tpg
= container_of(group
,
378 struct se_portal_group
, tpg_acl_group
);
379 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
380 struct se_node_acl
*se_nacl
;
382 se_nacl
= core_tpg_add_initiator_node_acl(se_tpg
, name
);
384 return ERR_CAST(se_nacl
);
386 if (tf
->tf_ops
->fabric_init_nodeacl
) {
387 int ret
= tf
->tf_ops
->fabric_init_nodeacl(se_nacl
, name
);
389 core_tpg_del_initiator_node_acl(se_nacl
);
394 config_group_init_type_name(&se_nacl
->acl_group
, name
,
395 &tf
->tf_tpg_nacl_base_cit
);
397 config_group_init_type_name(&se_nacl
->acl_attrib_group
, "attrib",
398 &tf
->tf_tpg_nacl_attrib_cit
);
399 configfs_add_default_group(&se_nacl
->acl_attrib_group
,
400 &se_nacl
->acl_group
);
402 config_group_init_type_name(&se_nacl
->acl_auth_group
, "auth",
403 &tf
->tf_tpg_nacl_auth_cit
);
404 configfs_add_default_group(&se_nacl
->acl_auth_group
,
405 &se_nacl
->acl_group
);
407 config_group_init_type_name(&se_nacl
->acl_param_group
, "param",
408 &tf
->tf_tpg_nacl_param_cit
);
409 configfs_add_default_group(&se_nacl
->acl_param_group
,
410 &se_nacl
->acl_group
);
412 config_group_init_type_name(&se_nacl
->acl_fabric_stat_group
,
413 "fabric_statistics", &tf
->tf_tpg_nacl_stat_cit
);
414 configfs_add_default_group(&se_nacl
->acl_fabric_stat_group
,
415 &se_nacl
->acl_group
);
417 return &se_nacl
->acl_group
;
420 static void target_fabric_drop_nodeacl(
421 struct config_group
*group
,
422 struct config_item
*item
)
424 struct se_node_acl
*se_nacl
= container_of(to_config_group(item
),
425 struct se_node_acl
, acl_group
);
427 configfs_remove_default_groups(&se_nacl
->acl_group
);
430 * struct se_node_acl free is done in target_fabric_nacl_base_release()
432 config_item_put(item
);
435 static struct configfs_group_operations target_fabric_nacl_group_ops
= {
436 .make_group
= target_fabric_make_nodeacl
,
437 .drop_item
= target_fabric_drop_nodeacl
,
440 TF_CIT_SETUP(tpg_nacl
, NULL
, &target_fabric_nacl_group_ops
, NULL
);
442 /* End of tfc_tpg_nacl_cit */
444 /* Start of tfc_tpg_np_base_cit */
446 static void target_fabric_np_base_release(struct config_item
*item
)
448 struct se_tpg_np
*se_tpg_np
= container_of(to_config_group(item
),
449 struct se_tpg_np
, tpg_np_group
);
450 struct se_portal_group
*se_tpg
= se_tpg_np
->tpg_np_parent
;
451 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
453 tf
->tf_ops
->fabric_drop_np(se_tpg_np
);
456 static struct configfs_item_operations target_fabric_np_base_item_ops
= {
457 .release
= target_fabric_np_base_release
,
460 TF_CIT_SETUP_DRV(tpg_np_base
, &target_fabric_np_base_item_ops
, NULL
);
462 /* End of tfc_tpg_np_base_cit */
464 /* Start of tfc_tpg_np_cit */
466 static struct config_group
*target_fabric_make_np(
467 struct config_group
*group
,
470 struct se_portal_group
*se_tpg
= container_of(group
,
471 struct se_portal_group
, tpg_np_group
);
472 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
473 struct se_tpg_np
*se_tpg_np
;
475 if (!tf
->tf_ops
->fabric_make_np
) {
476 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
477 return ERR_PTR(-ENOSYS
);
480 se_tpg_np
= tf
->tf_ops
->fabric_make_np(se_tpg
, group
, name
);
481 if (!se_tpg_np
|| IS_ERR(se_tpg_np
))
482 return ERR_PTR(-EINVAL
);
484 se_tpg_np
->tpg_np_parent
= se_tpg
;
485 config_group_init_type_name(&se_tpg_np
->tpg_np_group
, name
,
486 &tf
->tf_tpg_np_base_cit
);
488 return &se_tpg_np
->tpg_np_group
;
491 static void target_fabric_drop_np(
492 struct config_group
*group
,
493 struct config_item
*item
)
496 * struct se_tpg_np is released via target_fabric_np_base_release()
498 config_item_put(item
);
501 static struct configfs_group_operations target_fabric_np_group_ops
= {
502 .make_group
= &target_fabric_make_np
,
503 .drop_item
= &target_fabric_drop_np
,
506 TF_CIT_SETUP(tpg_np
, NULL
, &target_fabric_np_group_ops
, NULL
);
508 /* End of tfc_tpg_np_cit */
510 /* Start of tfc_tpg_port_cit */
512 static struct se_lun
*item_to_lun(struct config_item
*item
)
514 return container_of(to_config_group(item
), struct se_lun
,
518 static ssize_t
target_fabric_port_alua_tg_pt_gp_show(struct config_item
*item
,
521 struct se_lun
*lun
= item_to_lun(item
);
523 if (!lun
|| !lun
->lun_se_dev
)
526 return core_alua_show_tg_pt_gp_info(lun
, page
);
529 static ssize_t
target_fabric_port_alua_tg_pt_gp_store(struct config_item
*item
,
530 const char *page
, size_t count
)
532 struct se_lun
*lun
= item_to_lun(item
);
534 if (!lun
|| !lun
->lun_se_dev
)
537 return core_alua_store_tg_pt_gp_info(lun
, page
, count
);
540 static ssize_t
target_fabric_port_alua_tg_pt_offline_show(
541 struct config_item
*item
, char *page
)
543 struct se_lun
*lun
= item_to_lun(item
);
545 if (!lun
|| !lun
->lun_se_dev
)
548 return core_alua_show_offline_bit(lun
, page
);
551 static ssize_t
target_fabric_port_alua_tg_pt_offline_store(
552 struct config_item
*item
, const char *page
, size_t count
)
554 struct se_lun
*lun
= item_to_lun(item
);
556 if (!lun
|| !lun
->lun_se_dev
)
559 return core_alua_store_offline_bit(lun
, page
, count
);
562 static ssize_t
target_fabric_port_alua_tg_pt_status_show(
563 struct config_item
*item
, char *page
)
565 struct se_lun
*lun
= item_to_lun(item
);
567 if (!lun
|| !lun
->lun_se_dev
)
570 return core_alua_show_secondary_status(lun
, page
);
573 static ssize_t
target_fabric_port_alua_tg_pt_status_store(
574 struct config_item
*item
, const char *page
, size_t count
)
576 struct se_lun
*lun
= item_to_lun(item
);
578 if (!lun
|| !lun
->lun_se_dev
)
581 return core_alua_store_secondary_status(lun
, page
, count
);
584 static ssize_t
target_fabric_port_alua_tg_pt_write_md_show(
585 struct config_item
*item
, char *page
)
587 struct se_lun
*lun
= item_to_lun(item
);
589 if (!lun
|| !lun
->lun_se_dev
)
592 return core_alua_show_secondary_write_metadata(lun
, page
);
595 static ssize_t
target_fabric_port_alua_tg_pt_write_md_store(
596 struct config_item
*item
, const char *page
, size_t count
)
598 struct se_lun
*lun
= item_to_lun(item
);
600 if (!lun
|| !lun
->lun_se_dev
)
603 return core_alua_store_secondary_write_metadata(lun
, page
, count
);
606 CONFIGFS_ATTR(target_fabric_port_
, alua_tg_pt_gp
);
607 CONFIGFS_ATTR(target_fabric_port_
, alua_tg_pt_offline
);
608 CONFIGFS_ATTR(target_fabric_port_
, alua_tg_pt_status
);
609 CONFIGFS_ATTR(target_fabric_port_
, alua_tg_pt_write_md
);
611 static struct configfs_attribute
*target_fabric_port_attrs
[] = {
612 &target_fabric_port_attr_alua_tg_pt_gp
,
613 &target_fabric_port_attr_alua_tg_pt_offline
,
614 &target_fabric_port_attr_alua_tg_pt_status
,
615 &target_fabric_port_attr_alua_tg_pt_write_md
,
619 static int target_fabric_port_link(
620 struct config_item
*lun_ci
,
621 struct config_item
*se_dev_ci
)
623 struct config_item
*tpg_ci
;
624 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
625 struct se_lun
, lun_group
);
626 struct se_portal_group
*se_tpg
;
627 struct se_device
*dev
=
628 container_of(to_config_group(se_dev_ci
), struct se_device
, dev_group
);
629 struct target_fabric_configfs
*tf
;
632 if (dev
->dev_link_magic
!= SE_DEV_LINK_MAGIC
) {
633 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
634 " %p to struct se_device: %p\n", se_dev_ci
, dev
);
638 if (!(dev
->dev_flags
& DF_CONFIGURED
)) {
639 pr_err("se_device not configured yet, cannot port link\n");
643 tpg_ci
= &lun_ci
->ci_parent
->ci_group
->cg_item
;
644 se_tpg
= container_of(to_config_group(tpg_ci
),
645 struct se_portal_group
, tpg_group
);
646 tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
648 if (lun
->lun_se_dev
!= NULL
) {
649 pr_err("Port Symlink already exists\n");
653 ret
= core_dev_add_lun(se_tpg
, dev
, lun
);
655 pr_err("core_dev_add_lun() failed: %d\n", ret
);
659 if (tf
->tf_ops
->fabric_post_link
) {
661 * Call the optional fabric_post_link() to allow a
662 * fabric module to setup any additional state once
663 * core_dev_add_lun() has been called..
665 tf
->tf_ops
->fabric_post_link(se_tpg
, lun
);
673 static int target_fabric_port_unlink(
674 struct config_item
*lun_ci
,
675 struct config_item
*se_dev_ci
)
677 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
678 struct se_lun
, lun_group
);
679 struct se_portal_group
*se_tpg
= lun
->lun_tpg
;
680 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
682 if (tf
->tf_ops
->fabric_pre_unlink
) {
684 * Call the optional fabric_pre_unlink() to allow a
685 * fabric module to release any additional stat before
686 * core_dev_del_lun() is called.
688 tf
->tf_ops
->fabric_pre_unlink(se_tpg
, lun
);
691 core_dev_del_lun(se_tpg
, lun
);
695 static void target_fabric_port_release(struct config_item
*item
)
697 struct se_lun
*lun
= container_of(to_config_group(item
),
698 struct se_lun
, lun_group
);
700 kfree_rcu(lun
, rcu_head
);
703 static struct configfs_item_operations target_fabric_port_item_ops
= {
704 .release
= target_fabric_port_release
,
705 .allow_link
= target_fabric_port_link
,
706 .drop_link
= target_fabric_port_unlink
,
709 TF_CIT_SETUP(tpg_port
, &target_fabric_port_item_ops
, NULL
, target_fabric_port_attrs
);
711 /* End of tfc_tpg_port_cit */
713 /* Start of tfc_tpg_port_stat_cit */
715 static struct config_group
*target_core_port_stat_mkdir(
716 struct config_group
*group
,
719 return ERR_PTR(-ENOSYS
);
722 static void target_core_port_stat_rmdir(
723 struct config_group
*group
,
724 struct config_item
*item
)
729 static struct configfs_group_operations target_fabric_port_stat_group_ops
= {
730 .make_group
= target_core_port_stat_mkdir
,
731 .drop_item
= target_core_port_stat_rmdir
,
734 TF_CIT_SETUP(tpg_port_stat
, NULL
, &target_fabric_port_stat_group_ops
, NULL
);
736 /* End of tfc_tpg_port_stat_cit */
738 /* Start of tfc_tpg_lun_cit */
740 static struct config_group
*target_fabric_make_lun(
741 struct config_group
*group
,
745 struct se_portal_group
*se_tpg
= container_of(group
,
746 struct se_portal_group
, tpg_lun_group
);
747 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
748 unsigned long long unpacked_lun
;
751 if (strstr(name
, "lun_") != name
) {
752 pr_err("Unable to locate \'_\" in"
753 " \"lun_$LUN_NUMBER\"\n");
754 return ERR_PTR(-EINVAL
);
756 errno
= kstrtoull(name
+ 4, 0, &unpacked_lun
);
758 return ERR_PTR(errno
);
760 lun
= core_tpg_alloc_lun(se_tpg
, unpacked_lun
);
762 return ERR_CAST(lun
);
764 config_group_init_type_name(&lun
->lun_group
, name
,
765 &tf
->tf_tpg_port_cit
);
767 config_group_init_type_name(&lun
->port_stat_grps
.stat_group
,
768 "statistics", &tf
->tf_tpg_port_stat_cit
);
769 configfs_add_default_group(&lun
->port_stat_grps
.stat_group
,
772 target_stat_setup_port_default_groups(lun
);
774 return &lun
->lun_group
;
777 static void target_fabric_drop_lun(
778 struct config_group
*group
,
779 struct config_item
*item
)
781 struct se_lun
*lun
= container_of(to_config_group(item
),
782 struct se_lun
, lun_group
);
784 configfs_remove_default_groups(&lun
->port_stat_grps
.stat_group
);
785 configfs_remove_default_groups(&lun
->lun_group
);
787 config_item_put(item
);
790 static struct configfs_group_operations target_fabric_lun_group_ops
= {
791 .make_group
= &target_fabric_make_lun
,
792 .drop_item
= &target_fabric_drop_lun
,
795 TF_CIT_SETUP(tpg_lun
, NULL
, &target_fabric_lun_group_ops
, NULL
);
797 /* End of tfc_tpg_lun_cit */
799 TF_CIT_SETUP_DRV(tpg_attrib
, NULL
, NULL
);
800 TF_CIT_SETUP_DRV(tpg_auth
, NULL
, NULL
);
801 TF_CIT_SETUP_DRV(tpg_param
, NULL
, NULL
);
803 /* Start of tfc_tpg_base_cit */
805 static void target_fabric_tpg_release(struct config_item
*item
)
807 struct se_portal_group
*se_tpg
= container_of(to_config_group(item
),
808 struct se_portal_group
, tpg_group
);
809 struct se_wwn
*wwn
= se_tpg
->se_tpg_wwn
;
810 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
812 tf
->tf_ops
->fabric_drop_tpg(se_tpg
);
815 static struct configfs_item_operations target_fabric_tpg_base_item_ops
= {
816 .release
= target_fabric_tpg_release
,
819 TF_CIT_SETUP_DRV(tpg_base
, &target_fabric_tpg_base_item_ops
, NULL
);
821 /* End of tfc_tpg_base_cit */
823 /* Start of tfc_tpg_cit */
825 static struct config_group
*target_fabric_make_tpg(
826 struct config_group
*group
,
829 struct se_wwn
*wwn
= container_of(group
, struct se_wwn
, wwn_group
);
830 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
831 struct se_portal_group
*se_tpg
;
833 if (!tf
->tf_ops
->fabric_make_tpg
) {
834 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
835 return ERR_PTR(-ENOSYS
);
838 se_tpg
= tf
->tf_ops
->fabric_make_tpg(wwn
, group
, name
);
839 if (!se_tpg
|| IS_ERR(se_tpg
))
840 return ERR_PTR(-EINVAL
);
842 config_group_init_type_name(&se_tpg
->tpg_group
, name
,
843 &tf
->tf_tpg_base_cit
);
845 config_group_init_type_name(&se_tpg
->tpg_lun_group
, "lun",
846 &tf
->tf_tpg_lun_cit
);
847 configfs_add_default_group(&se_tpg
->tpg_lun_group
,
850 config_group_init_type_name(&se_tpg
->tpg_np_group
, "np",
852 configfs_add_default_group(&se_tpg
->tpg_np_group
,
855 config_group_init_type_name(&se_tpg
->tpg_acl_group
, "acls",
856 &tf
->tf_tpg_nacl_cit
);
857 configfs_add_default_group(&se_tpg
->tpg_acl_group
,
860 config_group_init_type_name(&se_tpg
->tpg_attrib_group
, "attrib",
861 &tf
->tf_tpg_attrib_cit
);
862 configfs_add_default_group(&se_tpg
->tpg_attrib_group
,
865 config_group_init_type_name(&se_tpg
->tpg_auth_group
, "auth",
866 &tf
->tf_tpg_auth_cit
);
867 configfs_add_default_group(&se_tpg
->tpg_auth_group
,
870 config_group_init_type_name(&se_tpg
->tpg_param_group
, "param",
871 &tf
->tf_tpg_param_cit
);
872 configfs_add_default_group(&se_tpg
->tpg_param_group
,
875 return &se_tpg
->tpg_group
;
878 static void target_fabric_drop_tpg(
879 struct config_group
*group
,
880 struct config_item
*item
)
882 struct se_portal_group
*se_tpg
= container_of(to_config_group(item
),
883 struct se_portal_group
, tpg_group
);
885 configfs_remove_default_groups(&se_tpg
->tpg_group
);
886 config_item_put(item
);
889 static void target_fabric_release_wwn(struct config_item
*item
)
891 struct se_wwn
*wwn
= container_of(to_config_group(item
),
892 struct se_wwn
, wwn_group
);
893 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
895 tf
->tf_ops
->fabric_drop_wwn(wwn
);
898 static struct configfs_item_operations target_fabric_tpg_item_ops
= {
899 .release
= target_fabric_release_wwn
,
902 static struct configfs_group_operations target_fabric_tpg_group_ops
= {
903 .make_group
= target_fabric_make_tpg
,
904 .drop_item
= target_fabric_drop_tpg
,
907 TF_CIT_SETUP(tpg
, &target_fabric_tpg_item_ops
, &target_fabric_tpg_group_ops
,
910 /* End of tfc_tpg_cit */
912 /* Start of tfc_wwn_fabric_stats_cit */
914 * This is used as a placeholder for struct se_wwn->fabric_stat_group
915 * to allow fabrics access to ->fabric_stat_group->default_groups[]
917 TF_CIT_SETUP(wwn_fabric_stats
, NULL
, NULL
, NULL
);
919 /* End of tfc_wwn_fabric_stats_cit */
921 /* Start of tfc_wwn_cit */
923 static struct config_group
*target_fabric_make_wwn(
924 struct config_group
*group
,
927 struct target_fabric_configfs
*tf
= container_of(group
,
928 struct target_fabric_configfs
, tf_group
);
931 if (!tf
->tf_ops
->fabric_make_wwn
) {
932 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
933 return ERR_PTR(-ENOSYS
);
936 wwn
= tf
->tf_ops
->fabric_make_wwn(tf
, group
, name
);
937 if (!wwn
|| IS_ERR(wwn
))
938 return ERR_PTR(-EINVAL
);
942 config_group_init_type_name(&wwn
->wwn_group
, name
, &tf
->tf_tpg_cit
);
944 config_group_init_type_name(&wwn
->fabric_stat_group
, "fabric_statistics",
945 &tf
->tf_wwn_fabric_stats_cit
);
946 configfs_add_default_group(&wwn
->fabric_stat_group
, &wwn
->wwn_group
);
948 return &wwn
->wwn_group
;
951 static void target_fabric_drop_wwn(
952 struct config_group
*group
,
953 struct config_item
*item
)
955 struct se_wwn
*wwn
= container_of(to_config_group(item
),
956 struct se_wwn
, wwn_group
);
958 configfs_remove_default_groups(&wwn
->wwn_group
);
959 config_item_put(item
);
962 static struct configfs_group_operations target_fabric_wwn_group_ops
= {
963 .make_group
= target_fabric_make_wwn
,
964 .drop_item
= target_fabric_drop_wwn
,
967 TF_CIT_SETUP_DRV(wwn
, NULL
, &target_fabric_wwn_group_ops
);
968 TF_CIT_SETUP_DRV(discovery
, NULL
, NULL
);
970 int target_fabric_setup_cits(struct target_fabric_configfs
*tf
)
972 target_fabric_setup_discovery_cit(tf
);
973 target_fabric_setup_wwn_cit(tf
);
974 target_fabric_setup_wwn_fabric_stats_cit(tf
);
975 target_fabric_setup_tpg_cit(tf
);
976 target_fabric_setup_tpg_base_cit(tf
);
977 target_fabric_setup_tpg_port_cit(tf
);
978 target_fabric_setup_tpg_port_stat_cit(tf
);
979 target_fabric_setup_tpg_lun_cit(tf
);
980 target_fabric_setup_tpg_np_cit(tf
);
981 target_fabric_setup_tpg_np_base_cit(tf
);
982 target_fabric_setup_tpg_attrib_cit(tf
);
983 target_fabric_setup_tpg_auth_cit(tf
);
984 target_fabric_setup_tpg_param_cit(tf
);
985 target_fabric_setup_tpg_nacl_cit(tf
);
986 target_fabric_setup_tpg_nacl_base_cit(tf
);
987 target_fabric_setup_tpg_nacl_attrib_cit(tf
);
988 target_fabric_setup_tpg_nacl_auth_cit(tf
);
989 target_fabric_setup_tpg_nacl_param_cit(tf
);
990 target_fabric_setup_tpg_nacl_stat_cit(tf
);
991 target_fabric_setup_tpg_mappedlun_cit(tf
);
992 target_fabric_setup_tpg_mappedlun_stat_cit(tf
);