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
);