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>
38 #include <target/target_core_fabric_configfs.h>
39 #include <target/configfs_macros.h>
41 #include "target_core_internal.h"
42 #include "target_core_alua.h"
43 #include "target_core_pr.h"
45 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
46 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
48 struct config_item_type *cit = &tf->tf_##_name##_cit; \
50 cit->ct_item_ops = _item_ops; \
51 cit->ct_group_ops = _group_ops; \
52 cit->ct_attrs = _attrs; \
53 cit->ct_owner = tf->tf_ops->module; \
54 pr_debug("Setup generic %s\n", __stringify(_name)); \
57 #define TF_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
58 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
60 struct config_item_type *cit = &tf->tf_##_name##_cit; \
61 struct configfs_attribute **attrs = tf->tf_ops->tfc_##_name##_attrs; \
63 cit->ct_item_ops = _item_ops; \
64 cit->ct_group_ops = _group_ops; \
65 cit->ct_attrs = attrs; \
66 cit->ct_owner = tf->tf_ops->module; \
67 pr_debug("Setup generic %s\n", __stringify(_name)); \
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
;
77 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
78 struct se_lun
, lun_group
);
79 struct se_lun_acl
*lacl
= container_of(to_config_group(lun_acl_ci
),
80 struct se_lun_acl
, se_lun_group
);
81 struct se_portal_group
*se_tpg
;
82 struct config_item
*nacl_ci
, *tpg_ci
, *tpg_ci_s
, *wwn_ci
, *wwn_ci_s
;
85 if (lun
->lun_link_magic
!= SE_LUN_LINK_MAGIC
) {
86 pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
87 " %p to struct lun: %p\n", lun_ci
, lun
);
91 * Ensure that the source port exists
93 if (!lun
->lun_se_dev
) {
94 pr_err("Source se_lun->lun_se_dev does not exist\n");
97 se_tpg
= lun
->lun_tpg
;
99 nacl_ci
= &lun_acl_ci
->ci_parent
->ci_group
->cg_item
;
100 tpg_ci
= &nacl_ci
->ci_group
->cg_item
;
101 wwn_ci
= &tpg_ci
->ci_group
->cg_item
;
102 tpg_ci_s
= &lun_ci
->ci_parent
->ci_group
->cg_item
;
103 wwn_ci_s
= &tpg_ci_s
->ci_group
->cg_item
;
105 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
107 if (strcmp(config_item_name(wwn_ci
), config_item_name(wwn_ci_s
))) {
108 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
109 config_item_name(wwn_ci
));
112 if (strcmp(config_item_name(tpg_ci
), config_item_name(tpg_ci_s
))) {
113 pr_err("Illegal Initiator ACL Symlink outside of %s"
114 " TPGT: %s\n", config_item_name(wwn_ci
),
115 config_item_name(tpg_ci
));
119 * If this struct se_node_acl was dynamically generated with
120 * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
121 * which be will write protected (READ-ONLY) when
122 * tpg_1/attrib/demo_mode_write_protect=1
125 deve
= target_nacl_find_deve(lacl
->se_lun_nacl
, lacl
->mapped_lun
);
127 lun_access
= deve
->lun_flags
;
130 (se_tpg
->se_tpg_tfo
->tpg_check_prod_mode_write_protect(
131 se_tpg
)) ? TRANSPORT_LUNFLAGS_READ_ONLY
:
132 TRANSPORT_LUNFLAGS_READ_WRITE
;
135 * Determine the actual mapped LUN value user wants..
137 * This value is what the SCSI Initiator actually sees the
138 * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
140 return core_dev_add_initiator_node_lun_acl(se_tpg
, lacl
, lun
, lun_access
);
143 static int target_fabric_mappedlun_unlink(
144 struct config_item
*lun_acl_ci
,
145 struct config_item
*lun_ci
)
147 struct se_lun_acl
*lacl
= container_of(to_config_group(lun_acl_ci
),
148 struct se_lun_acl
, se_lun_group
);
149 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
150 struct se_lun
, lun_group
);
152 return core_dev_del_initiator_node_lun_acl(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
;
171 deve
= target_nacl_find_deve(se_nacl
, lacl
->mapped_lun
);
173 len
= sprintf(page
, "%d\n",
174 (deve
->lun_flags
& TRANSPORT_LUNFLAGS_READ_ONLY
) ? 1 : 0);
181 static ssize_t
target_fabric_mappedlun_store_write_protect(
182 struct se_lun_acl
*lacl
,
186 struct se_node_acl
*se_nacl
= lacl
->se_lun_nacl
;
187 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
191 ret
= kstrtoul(page
, 0, &op
);
195 if ((op
!= 1) && (op
!= 0))
198 core_update_device_list_access(lacl
->mapped_lun
, (op
) ?
199 TRANSPORT_LUNFLAGS_READ_ONLY
:
200 TRANSPORT_LUNFLAGS_READ_WRITE
,
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
, (op
) ? "ON" : "OFF");
212 TCM_MAPPEDLUN_ATTR(write_protect
, S_IRUGO
| S_IWUSR
);
214 CONFIGFS_EATTR_OPS(target_fabric_mappedlun
, se_lun_acl
, se_lun_group
);
216 static void target_fabric_mappedlun_release(struct config_item
*item
)
218 struct se_lun_acl
*lacl
= container_of(to_config_group(item
),
219 struct se_lun_acl
, se_lun_group
);
220 struct se_portal_group
*se_tpg
= lacl
->se_lun_nacl
->se_tpg
;
222 core_dev_free_initiator_node_lun_acl(se_tpg
, lacl
);
225 static struct configfs_attribute
*target_fabric_mappedlun_attrs
[] = {
226 &target_fabric_mappedlun_write_protect
.attr
,
230 static struct configfs_item_operations target_fabric_mappedlun_item_ops
= {
231 .release
= target_fabric_mappedlun_release
,
232 .show_attribute
= target_fabric_mappedlun_attr_show
,
233 .store_attribute
= target_fabric_mappedlun_attr_store
,
234 .allow_link
= target_fabric_mappedlun_link
,
235 .drop_link
= target_fabric_mappedlun_unlink
,
238 TF_CIT_SETUP(tpg_mappedlun
, &target_fabric_mappedlun_item_ops
, NULL
,
239 target_fabric_mappedlun_attrs
);
241 /* End of tfc_tpg_mappedlun_cit */
243 /* Start of tfc_tpg_mappedlun_port_cit */
245 static struct config_group
*target_core_mappedlun_stat_mkdir(
246 struct config_group
*group
,
249 return ERR_PTR(-ENOSYS
);
252 static void target_core_mappedlun_stat_rmdir(
253 struct config_group
*group
,
254 struct config_item
*item
)
259 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops
= {
260 .make_group
= target_core_mappedlun_stat_mkdir
,
261 .drop_item
= target_core_mappedlun_stat_rmdir
,
264 TF_CIT_SETUP(tpg_mappedlun_stat
, NULL
, &target_fabric_mappedlun_stat_group_ops
,
267 /* End of tfc_tpg_mappedlun_port_cit */
269 /* Start of tfc_tpg_nacl_attrib_cit */
271 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib
, se_node_acl
, acl_attrib_group
);
273 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops
= {
274 .show_attribute
= target_fabric_nacl_attrib_attr_show
,
275 .store_attribute
= target_fabric_nacl_attrib_attr_store
,
278 TF_CIT_SETUP_DRV(tpg_nacl_attrib
, &target_fabric_nacl_attrib_item_ops
, NULL
);
280 /* End of tfc_tpg_nacl_attrib_cit */
282 /* Start of tfc_tpg_nacl_auth_cit */
284 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth
, se_node_acl
, acl_auth_group
);
286 static struct configfs_item_operations target_fabric_nacl_auth_item_ops
= {
287 .show_attribute
= target_fabric_nacl_auth_attr_show
,
288 .store_attribute
= target_fabric_nacl_auth_attr_store
,
291 TF_CIT_SETUP_DRV(tpg_nacl_auth
, &target_fabric_nacl_auth_item_ops
, NULL
);
293 /* End of tfc_tpg_nacl_auth_cit */
295 /* Start of tfc_tpg_nacl_param_cit */
297 CONFIGFS_EATTR_OPS(target_fabric_nacl_param
, se_node_acl
, acl_param_group
);
299 static struct configfs_item_operations target_fabric_nacl_param_item_ops
= {
300 .show_attribute
= target_fabric_nacl_param_attr_show
,
301 .store_attribute
= target_fabric_nacl_param_attr_store
,
304 TF_CIT_SETUP_DRV(tpg_nacl_param
, &target_fabric_nacl_param_item_ops
, NULL
);
306 /* End of tfc_tpg_nacl_param_cit */
308 /* Start of tfc_tpg_nacl_base_cit */
310 CONFIGFS_EATTR_OPS(target_fabric_nacl_base
, se_node_acl
, acl_group
);
312 static struct config_group
*target_fabric_make_mappedlun(
313 struct config_group
*group
,
316 struct se_node_acl
*se_nacl
= container_of(group
,
317 struct se_node_acl
, acl_group
);
318 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
319 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
320 struct se_lun_acl
*lacl
= NULL
;
321 struct config_item
*acl_ci
;
322 struct config_group
*lacl_cg
= NULL
, *ml_stat_grp
= NULL
;
324 unsigned long long mapped_lun
;
327 acl_ci
= &group
->cg_item
;
329 pr_err("Unable to locatel acl_ci\n");
333 buf
= kzalloc(strlen(name
) + 1, GFP_KERNEL
);
335 pr_err("Unable to allocate memory for name buf\n");
336 return ERR_PTR(-ENOMEM
);
338 snprintf(buf
, strlen(name
) + 1, "%s", name
);
340 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
342 if (strstr(buf
, "lun_") != buf
) {
343 pr_err("Unable to locate \"lun_\" from buf: %s"
344 " name: %s\n", buf
, name
);
349 * Determine the Mapped LUN value. This is what the SCSI Initiator
350 * Port will actually see.
352 ret
= kstrtoull(buf
+ 4, 0, &mapped_lun
);
356 lacl
= core_dev_init_initiator_node_lun_acl(se_tpg
, se_nacl
,
363 lacl_cg
= &lacl
->se_lun_group
;
364 lacl_cg
->default_groups
= kmalloc(sizeof(struct config_group
*) * 2,
366 if (!lacl_cg
->default_groups
) {
367 pr_err("Unable to allocate lacl_cg->default_groups\n");
372 config_group_init_type_name(&lacl
->se_lun_group
, name
,
373 &tf
->tf_tpg_mappedlun_cit
);
374 config_group_init_type_name(&lacl
->ml_stat_grps
.stat_group
,
375 "statistics", &tf
->tf_tpg_mappedlun_stat_cit
);
376 lacl_cg
->default_groups
[0] = &lacl
->ml_stat_grps
.stat_group
;
377 lacl_cg
->default_groups
[1] = NULL
;
379 ml_stat_grp
= &lacl
->ml_stat_grps
.stat_group
;
380 ml_stat_grp
->default_groups
= kmalloc(sizeof(struct config_group
*) * 3,
382 if (!ml_stat_grp
->default_groups
) {
383 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
387 target_stat_setup_mappedlun_default_groups(lacl
);
390 return &lacl
->se_lun_group
;
393 kfree(lacl_cg
->default_groups
);
399 static void target_fabric_drop_mappedlun(
400 struct config_group
*group
,
401 struct config_item
*item
)
403 struct se_lun_acl
*lacl
= container_of(to_config_group(item
),
404 struct se_lun_acl
, se_lun_group
);
405 struct config_item
*df_item
;
406 struct config_group
*lacl_cg
= NULL
, *ml_stat_grp
= NULL
;
409 ml_stat_grp
= &lacl
->ml_stat_grps
.stat_group
;
410 for (i
= 0; ml_stat_grp
->default_groups
[i
]; i
++) {
411 df_item
= &ml_stat_grp
->default_groups
[i
]->cg_item
;
412 ml_stat_grp
->default_groups
[i
] = NULL
;
413 config_item_put(df_item
);
415 kfree(ml_stat_grp
->default_groups
);
417 lacl_cg
= &lacl
->se_lun_group
;
418 for (i
= 0; lacl_cg
->default_groups
[i
]; i
++) {
419 df_item
= &lacl_cg
->default_groups
[i
]->cg_item
;
420 lacl_cg
->default_groups
[i
] = NULL
;
421 config_item_put(df_item
);
423 kfree(lacl_cg
->default_groups
);
425 config_item_put(item
);
428 static void target_fabric_nacl_base_release(struct config_item
*item
)
430 struct se_node_acl
*se_nacl
= container_of(to_config_group(item
),
431 struct se_node_acl
, acl_group
);
432 struct target_fabric_configfs
*tf
= se_nacl
->se_tpg
->se_tpg_wwn
->wwn_tf
;
434 if (tf
->tf_ops
->fabric_cleanup_nodeacl
)
435 tf
->tf_ops
->fabric_cleanup_nodeacl(se_nacl
);
436 core_tpg_del_initiator_node_acl(se_nacl
);
439 static struct configfs_item_operations target_fabric_nacl_base_item_ops
= {
440 .release
= target_fabric_nacl_base_release
,
441 .show_attribute
= target_fabric_nacl_base_attr_show
,
442 .store_attribute
= target_fabric_nacl_base_attr_store
,
445 static struct configfs_group_operations target_fabric_nacl_base_group_ops
= {
446 .make_group
= target_fabric_make_mappedlun
,
447 .drop_item
= target_fabric_drop_mappedlun
,
450 TF_CIT_SETUP_DRV(tpg_nacl_base
, &target_fabric_nacl_base_item_ops
,
451 &target_fabric_nacl_base_group_ops
);
453 /* End of tfc_tpg_nacl_base_cit */
455 /* Start of tfc_node_fabric_stats_cit */
457 * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
458 * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
460 TF_CIT_SETUP(tpg_nacl_stat
, NULL
, NULL
, NULL
);
462 /* End of tfc_wwn_fabric_stats_cit */
464 /* Start of tfc_tpg_nacl_cit */
466 static struct config_group
*target_fabric_make_nodeacl(
467 struct config_group
*group
,
470 struct se_portal_group
*se_tpg
= container_of(group
,
471 struct se_portal_group
, tpg_acl_group
);
472 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
473 struct se_node_acl
*se_nacl
;
474 struct config_group
*nacl_cg
;
476 se_nacl
= core_tpg_add_initiator_node_acl(se_tpg
, name
);
478 return ERR_CAST(se_nacl
);
480 if (tf
->tf_ops
->fabric_init_nodeacl
) {
481 int ret
= tf
->tf_ops
->fabric_init_nodeacl(se_nacl
, name
);
483 core_tpg_del_initiator_node_acl(se_nacl
);
488 nacl_cg
= &se_nacl
->acl_group
;
489 nacl_cg
->default_groups
= se_nacl
->acl_default_groups
;
490 nacl_cg
->default_groups
[0] = &se_nacl
->acl_attrib_group
;
491 nacl_cg
->default_groups
[1] = &se_nacl
->acl_auth_group
;
492 nacl_cg
->default_groups
[2] = &se_nacl
->acl_param_group
;
493 nacl_cg
->default_groups
[3] = &se_nacl
->acl_fabric_stat_group
;
494 nacl_cg
->default_groups
[4] = NULL
;
496 config_group_init_type_name(&se_nacl
->acl_group
, name
,
497 &tf
->tf_tpg_nacl_base_cit
);
498 config_group_init_type_name(&se_nacl
->acl_attrib_group
, "attrib",
499 &tf
->tf_tpg_nacl_attrib_cit
);
500 config_group_init_type_name(&se_nacl
->acl_auth_group
, "auth",
501 &tf
->tf_tpg_nacl_auth_cit
);
502 config_group_init_type_name(&se_nacl
->acl_param_group
, "param",
503 &tf
->tf_tpg_nacl_param_cit
);
504 config_group_init_type_name(&se_nacl
->acl_fabric_stat_group
,
505 "fabric_statistics", &tf
->tf_tpg_nacl_stat_cit
);
507 return &se_nacl
->acl_group
;
510 static void target_fabric_drop_nodeacl(
511 struct config_group
*group
,
512 struct config_item
*item
)
514 struct se_node_acl
*se_nacl
= container_of(to_config_group(item
),
515 struct se_node_acl
, acl_group
);
516 struct config_item
*df_item
;
517 struct config_group
*nacl_cg
;
520 nacl_cg
= &se_nacl
->acl_group
;
521 for (i
= 0; nacl_cg
->default_groups
[i
]; i
++) {
522 df_item
= &nacl_cg
->default_groups
[i
]->cg_item
;
523 nacl_cg
->default_groups
[i
] = NULL
;
524 config_item_put(df_item
);
527 * struct se_node_acl free is done in target_fabric_nacl_base_release()
529 config_item_put(item
);
532 static struct configfs_group_operations target_fabric_nacl_group_ops
= {
533 .make_group
= target_fabric_make_nodeacl
,
534 .drop_item
= target_fabric_drop_nodeacl
,
537 TF_CIT_SETUP(tpg_nacl
, NULL
, &target_fabric_nacl_group_ops
, NULL
);
539 /* End of tfc_tpg_nacl_cit */
541 /* Start of tfc_tpg_np_base_cit */
543 CONFIGFS_EATTR_OPS(target_fabric_np_base
, se_tpg_np
, tpg_np_group
);
545 static void target_fabric_np_base_release(struct config_item
*item
)
547 struct se_tpg_np
*se_tpg_np
= container_of(to_config_group(item
),
548 struct se_tpg_np
, tpg_np_group
);
549 struct se_portal_group
*se_tpg
= se_tpg_np
->tpg_np_parent
;
550 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
552 tf
->tf_ops
->fabric_drop_np(se_tpg_np
);
555 static struct configfs_item_operations target_fabric_np_base_item_ops
= {
556 .release
= target_fabric_np_base_release
,
557 .show_attribute
= target_fabric_np_base_attr_show
,
558 .store_attribute
= target_fabric_np_base_attr_store
,
561 TF_CIT_SETUP_DRV(tpg_np_base
, &target_fabric_np_base_item_ops
, NULL
);
563 /* End of tfc_tpg_np_base_cit */
565 /* Start of tfc_tpg_np_cit */
567 static struct config_group
*target_fabric_make_np(
568 struct config_group
*group
,
571 struct se_portal_group
*se_tpg
= container_of(group
,
572 struct se_portal_group
, tpg_np_group
);
573 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
574 struct se_tpg_np
*se_tpg_np
;
576 if (!tf
->tf_ops
->fabric_make_np
) {
577 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
578 return ERR_PTR(-ENOSYS
);
581 se_tpg_np
= tf
->tf_ops
->fabric_make_np(se_tpg
, group
, name
);
582 if (!se_tpg_np
|| IS_ERR(se_tpg_np
))
583 return ERR_PTR(-EINVAL
);
585 se_tpg_np
->tpg_np_parent
= se_tpg
;
586 config_group_init_type_name(&se_tpg_np
->tpg_np_group
, name
,
587 &tf
->tf_tpg_np_base_cit
);
589 return &se_tpg_np
->tpg_np_group
;
592 static void target_fabric_drop_np(
593 struct config_group
*group
,
594 struct config_item
*item
)
597 * struct se_tpg_np is released via target_fabric_np_base_release()
599 config_item_put(item
);
602 static struct configfs_group_operations target_fabric_np_group_ops
= {
603 .make_group
= &target_fabric_make_np
,
604 .drop_item
= &target_fabric_drop_np
,
607 TF_CIT_SETUP(tpg_np
, NULL
, &target_fabric_np_group_ops
, NULL
);
609 /* End of tfc_tpg_np_cit */
611 /* Start of tfc_tpg_port_cit */
613 CONFIGFS_EATTR_STRUCT(target_fabric_port
, se_lun
);
614 #define TCM_PORT_ATTR(_name, _mode) \
615 static struct target_fabric_port_attribute target_fabric_port_##_name = \
616 __CONFIGFS_EATTR(_name, _mode, \
617 target_fabric_port_show_attr_##_name, \
618 target_fabric_port_store_attr_##_name);
620 #define TCM_PORT_ATTOR_RO(_name) \
621 __CONFIGFS_EATTR_RO(_name, \
622 target_fabric_port_show_attr_##_name);
627 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_gp(
631 if (!lun
|| !lun
->lun_se_dev
)
634 return core_alua_show_tg_pt_gp_info(lun
, page
);
637 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_gp(
642 if (!lun
|| !lun
->lun_se_dev
)
645 return core_alua_store_tg_pt_gp_info(lun
, page
, count
);
648 TCM_PORT_ATTR(alua_tg_pt_gp
, S_IRUGO
| S_IWUSR
);
653 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_offline(
657 if (!lun
|| !lun
->lun_se_dev
)
660 return core_alua_show_offline_bit(lun
, page
);
663 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_offline(
668 if (!lun
|| !lun
->lun_se_dev
)
671 return core_alua_store_offline_bit(lun
, page
, count
);
674 TCM_PORT_ATTR(alua_tg_pt_offline
, S_IRUGO
| S_IWUSR
);
679 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_status(
683 if (!lun
|| !lun
->lun_se_dev
)
686 return core_alua_show_secondary_status(lun
, page
);
689 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_status(
694 if (!lun
|| !lun
->lun_se_dev
)
697 return core_alua_store_secondary_status(lun
, page
, count
);
700 TCM_PORT_ATTR(alua_tg_pt_status
, S_IRUGO
| S_IWUSR
);
703 * alua_tg_pt_write_md
705 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_write_md(
709 if (!lun
|| !lun
->lun_se_dev
)
712 return core_alua_show_secondary_write_metadata(lun
, page
);
715 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_write_md(
720 if (!lun
|| !lun
->lun_se_dev
)
723 return core_alua_store_secondary_write_metadata(lun
, page
, count
);
726 TCM_PORT_ATTR(alua_tg_pt_write_md
, S_IRUGO
| S_IWUSR
);
729 static struct configfs_attribute
*target_fabric_port_attrs
[] = {
730 &target_fabric_port_alua_tg_pt_gp
.attr
,
731 &target_fabric_port_alua_tg_pt_offline
.attr
,
732 &target_fabric_port_alua_tg_pt_status
.attr
,
733 &target_fabric_port_alua_tg_pt_write_md
.attr
,
737 CONFIGFS_EATTR_OPS(target_fabric_port
, se_lun
, lun_group
);
739 static int target_fabric_port_link(
740 struct config_item
*lun_ci
,
741 struct config_item
*se_dev_ci
)
743 struct config_item
*tpg_ci
;
744 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
745 struct se_lun
, lun_group
);
746 struct se_portal_group
*se_tpg
;
747 struct se_device
*dev
=
748 container_of(to_config_group(se_dev_ci
), struct se_device
, dev_group
);
749 struct target_fabric_configfs
*tf
;
752 if (dev
->dev_link_magic
!= SE_DEV_LINK_MAGIC
) {
753 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
754 " %p to struct se_device: %p\n", se_dev_ci
, dev
);
758 if (!(dev
->dev_flags
& DF_CONFIGURED
)) {
759 pr_err("se_device not configured yet, cannot port link\n");
763 tpg_ci
= &lun_ci
->ci_parent
->ci_group
->cg_item
;
764 se_tpg
= container_of(to_config_group(tpg_ci
),
765 struct se_portal_group
, tpg_group
);
766 tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
768 if (lun
->lun_se_dev
!= NULL
) {
769 pr_err("Port Symlink already exists\n");
773 ret
= core_dev_add_lun(se_tpg
, dev
, lun
);
775 pr_err("core_dev_add_lun() failed: %d\n", ret
);
779 if (tf
->tf_ops
->fabric_post_link
) {
781 * Call the optional fabric_post_link() to allow a
782 * fabric module to setup any additional state once
783 * core_dev_add_lun() has been called..
785 tf
->tf_ops
->fabric_post_link(se_tpg
, lun
);
793 static int target_fabric_port_unlink(
794 struct config_item
*lun_ci
,
795 struct config_item
*se_dev_ci
)
797 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
798 struct se_lun
, lun_group
);
799 struct se_portal_group
*se_tpg
= lun
->lun_tpg
;
800 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
802 if (tf
->tf_ops
->fabric_pre_unlink
) {
804 * Call the optional fabric_pre_unlink() to allow a
805 * fabric module to release any additional stat before
806 * core_dev_del_lun() is called.
808 tf
->tf_ops
->fabric_pre_unlink(se_tpg
, lun
);
811 core_dev_del_lun(se_tpg
, lun
);
815 static void target_fabric_port_release(struct config_item
*item
)
817 struct se_lun
*lun
= container_of(to_config_group(item
),
818 struct se_lun
, lun_group
);
820 kfree_rcu(lun
, rcu_head
);
823 static struct configfs_item_operations target_fabric_port_item_ops
= {
824 .show_attribute
= target_fabric_port_attr_show
,
825 .store_attribute
= target_fabric_port_attr_store
,
826 .release
= target_fabric_port_release
,
827 .allow_link
= target_fabric_port_link
,
828 .drop_link
= target_fabric_port_unlink
,
831 TF_CIT_SETUP(tpg_port
, &target_fabric_port_item_ops
, NULL
, target_fabric_port_attrs
);
833 /* End of tfc_tpg_port_cit */
835 /* Start of tfc_tpg_port_stat_cit */
837 static struct config_group
*target_core_port_stat_mkdir(
838 struct config_group
*group
,
841 return ERR_PTR(-ENOSYS
);
844 static void target_core_port_stat_rmdir(
845 struct config_group
*group
,
846 struct config_item
*item
)
851 static struct configfs_group_operations target_fabric_port_stat_group_ops
= {
852 .make_group
= target_core_port_stat_mkdir
,
853 .drop_item
= target_core_port_stat_rmdir
,
856 TF_CIT_SETUP(tpg_port_stat
, NULL
, &target_fabric_port_stat_group_ops
, NULL
);
858 /* End of tfc_tpg_port_stat_cit */
860 /* Start of tfc_tpg_lun_cit */
862 static struct config_group
*target_fabric_make_lun(
863 struct config_group
*group
,
867 struct se_portal_group
*se_tpg
= container_of(group
,
868 struct se_portal_group
, tpg_lun_group
);
869 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
870 struct config_group
*lun_cg
= NULL
, *port_stat_grp
= NULL
;
871 unsigned long long unpacked_lun
;
874 if (strstr(name
, "lun_") != name
) {
875 pr_err("Unable to locate \'_\" in"
876 " \"lun_$LUN_NUMBER\"\n");
877 return ERR_PTR(-EINVAL
);
879 errno
= kstrtoull(name
+ 4, 0, &unpacked_lun
);
881 return ERR_PTR(errno
);
883 lun
= core_tpg_alloc_lun(se_tpg
, unpacked_lun
);
885 return ERR_CAST(lun
);
887 lun_cg
= &lun
->lun_group
;
888 lun_cg
->default_groups
= kmalloc(sizeof(struct config_group
*) * 2,
890 if (!lun_cg
->default_groups
) {
891 pr_err("Unable to allocate lun_cg->default_groups\n");
893 return ERR_PTR(-ENOMEM
);
896 config_group_init_type_name(&lun
->lun_group
, name
,
897 &tf
->tf_tpg_port_cit
);
898 config_group_init_type_name(&lun
->port_stat_grps
.stat_group
,
899 "statistics", &tf
->tf_tpg_port_stat_cit
);
900 lun_cg
->default_groups
[0] = &lun
->port_stat_grps
.stat_group
;
901 lun_cg
->default_groups
[1] = NULL
;
903 port_stat_grp
= &lun
->port_stat_grps
.stat_group
;
904 port_stat_grp
->default_groups
= kzalloc(sizeof(struct config_group
*) * 4,
906 if (!port_stat_grp
->default_groups
) {
907 pr_err("Unable to allocate port_stat_grp->default_groups\n");
908 kfree(lun_cg
->default_groups
);
910 return ERR_PTR(-ENOMEM
);
912 target_stat_setup_port_default_groups(lun
);
914 return &lun
->lun_group
;
917 static void target_fabric_drop_lun(
918 struct config_group
*group
,
919 struct config_item
*item
)
921 struct se_lun
*lun
= container_of(to_config_group(item
),
922 struct se_lun
, lun_group
);
923 struct config_item
*df_item
;
924 struct config_group
*lun_cg
, *port_stat_grp
;
927 port_stat_grp
= &lun
->port_stat_grps
.stat_group
;
928 for (i
= 0; port_stat_grp
->default_groups
[i
]; i
++) {
929 df_item
= &port_stat_grp
->default_groups
[i
]->cg_item
;
930 port_stat_grp
->default_groups
[i
] = NULL
;
931 config_item_put(df_item
);
933 kfree(port_stat_grp
->default_groups
);
935 lun_cg
= &lun
->lun_group
;
936 for (i
= 0; lun_cg
->default_groups
[i
]; i
++) {
937 df_item
= &lun_cg
->default_groups
[i
]->cg_item
;
938 lun_cg
->default_groups
[i
] = NULL
;
939 config_item_put(df_item
);
941 kfree(lun_cg
->default_groups
);
943 config_item_put(item
);
946 static struct configfs_group_operations target_fabric_lun_group_ops
= {
947 .make_group
= &target_fabric_make_lun
,
948 .drop_item
= &target_fabric_drop_lun
,
951 TF_CIT_SETUP(tpg_lun
, NULL
, &target_fabric_lun_group_ops
, NULL
);
953 /* End of tfc_tpg_lun_cit */
955 /* Start of tfc_tpg_attrib_cit */
957 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib
, se_portal_group
, tpg_attrib_group
);
959 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops
= {
960 .show_attribute
= target_fabric_tpg_attrib_attr_show
,
961 .store_attribute
= target_fabric_tpg_attrib_attr_store
,
964 TF_CIT_SETUP_DRV(tpg_attrib
, &target_fabric_tpg_attrib_item_ops
, NULL
);
966 /* End of tfc_tpg_attrib_cit */
968 /* Start of tfc_tpg_auth_cit */
970 CONFIGFS_EATTR_OPS(target_fabric_tpg_auth
, se_portal_group
, tpg_auth_group
);
972 static struct configfs_item_operations target_fabric_tpg_auth_item_ops
= {
973 .show_attribute
= target_fabric_tpg_auth_attr_show
,
974 .store_attribute
= target_fabric_tpg_auth_attr_store
,
977 TF_CIT_SETUP_DRV(tpg_auth
, &target_fabric_tpg_auth_item_ops
, NULL
);
979 /* End of tfc_tpg_attrib_cit */
981 /* Start of tfc_tpg_param_cit */
983 CONFIGFS_EATTR_OPS(target_fabric_tpg_param
, se_portal_group
, tpg_param_group
);
985 static struct configfs_item_operations target_fabric_tpg_param_item_ops
= {
986 .show_attribute
= target_fabric_tpg_param_attr_show
,
987 .store_attribute
= target_fabric_tpg_param_attr_store
,
990 TF_CIT_SETUP_DRV(tpg_param
, &target_fabric_tpg_param_item_ops
, NULL
);
992 /* End of tfc_tpg_param_cit */
994 /* Start of tfc_tpg_base_cit */
996 * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
998 CONFIGFS_EATTR_OPS(target_fabric_tpg
, se_portal_group
, tpg_group
);
1000 static void target_fabric_tpg_release(struct config_item
*item
)
1002 struct se_portal_group
*se_tpg
= container_of(to_config_group(item
),
1003 struct se_portal_group
, tpg_group
);
1004 struct se_wwn
*wwn
= se_tpg
->se_tpg_wwn
;
1005 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
1007 tf
->tf_ops
->fabric_drop_tpg(se_tpg
);
1010 static struct configfs_item_operations target_fabric_tpg_base_item_ops
= {
1011 .release
= target_fabric_tpg_release
,
1012 .show_attribute
= target_fabric_tpg_attr_show
,
1013 .store_attribute
= target_fabric_tpg_attr_store
,
1016 TF_CIT_SETUP_DRV(tpg_base
, &target_fabric_tpg_base_item_ops
, NULL
);
1018 /* End of tfc_tpg_base_cit */
1020 /* Start of tfc_tpg_cit */
1022 static struct config_group
*target_fabric_make_tpg(
1023 struct config_group
*group
,
1026 struct se_wwn
*wwn
= container_of(group
, struct se_wwn
, wwn_group
);
1027 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
1028 struct se_portal_group
*se_tpg
;
1030 if (!tf
->tf_ops
->fabric_make_tpg
) {
1031 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
1032 return ERR_PTR(-ENOSYS
);
1035 se_tpg
= tf
->tf_ops
->fabric_make_tpg(wwn
, group
, name
);
1036 if (!se_tpg
|| IS_ERR(se_tpg
))
1037 return ERR_PTR(-EINVAL
);
1039 * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1041 se_tpg
->tpg_group
.default_groups
= se_tpg
->tpg_default_groups
;
1042 se_tpg
->tpg_group
.default_groups
[0] = &se_tpg
->tpg_lun_group
;
1043 se_tpg
->tpg_group
.default_groups
[1] = &se_tpg
->tpg_np_group
;
1044 se_tpg
->tpg_group
.default_groups
[2] = &se_tpg
->tpg_acl_group
;
1045 se_tpg
->tpg_group
.default_groups
[3] = &se_tpg
->tpg_attrib_group
;
1046 se_tpg
->tpg_group
.default_groups
[4] = &se_tpg
->tpg_auth_group
;
1047 se_tpg
->tpg_group
.default_groups
[5] = &se_tpg
->tpg_param_group
;
1048 se_tpg
->tpg_group
.default_groups
[6] = NULL
;
1050 config_group_init_type_name(&se_tpg
->tpg_group
, name
,
1051 &tf
->tf_tpg_base_cit
);
1052 config_group_init_type_name(&se_tpg
->tpg_lun_group
, "lun",
1053 &tf
->tf_tpg_lun_cit
);
1054 config_group_init_type_name(&se_tpg
->tpg_np_group
, "np",
1055 &tf
->tf_tpg_np_cit
);
1056 config_group_init_type_name(&se_tpg
->tpg_acl_group
, "acls",
1057 &tf
->tf_tpg_nacl_cit
);
1058 config_group_init_type_name(&se_tpg
->tpg_attrib_group
, "attrib",
1059 &tf
->tf_tpg_attrib_cit
);
1060 config_group_init_type_name(&se_tpg
->tpg_auth_group
, "auth",
1061 &tf
->tf_tpg_auth_cit
);
1062 config_group_init_type_name(&se_tpg
->tpg_param_group
, "param",
1063 &tf
->tf_tpg_param_cit
);
1065 return &se_tpg
->tpg_group
;
1068 static void target_fabric_drop_tpg(
1069 struct config_group
*group
,
1070 struct config_item
*item
)
1072 struct se_portal_group
*se_tpg
= container_of(to_config_group(item
),
1073 struct se_portal_group
, tpg_group
);
1074 struct config_group
*tpg_cg
= &se_tpg
->tpg_group
;
1075 struct config_item
*df_item
;
1078 * Release default groups, but do not release tpg_cg->default_groups
1079 * memory as it is statically allocated at se_tpg->tpg_default_groups.
1081 for (i
= 0; tpg_cg
->default_groups
[i
]; i
++) {
1082 df_item
= &tpg_cg
->default_groups
[i
]->cg_item
;
1083 tpg_cg
->default_groups
[i
] = NULL
;
1084 config_item_put(df_item
);
1087 config_item_put(item
);
1090 static void target_fabric_release_wwn(struct config_item
*item
)
1092 struct se_wwn
*wwn
= container_of(to_config_group(item
),
1093 struct se_wwn
, wwn_group
);
1094 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
1096 tf
->tf_ops
->fabric_drop_wwn(wwn
);
1099 static struct configfs_item_operations target_fabric_tpg_item_ops
= {
1100 .release
= target_fabric_release_wwn
,
1103 static struct configfs_group_operations target_fabric_tpg_group_ops
= {
1104 .make_group
= target_fabric_make_tpg
,
1105 .drop_item
= target_fabric_drop_tpg
,
1108 TF_CIT_SETUP(tpg
, &target_fabric_tpg_item_ops
, &target_fabric_tpg_group_ops
,
1111 /* End of tfc_tpg_cit */
1113 /* Start of tfc_wwn_fabric_stats_cit */
1115 * This is used as a placeholder for struct se_wwn->fabric_stat_group
1116 * to allow fabrics access to ->fabric_stat_group->default_groups[]
1118 TF_CIT_SETUP(wwn_fabric_stats
, NULL
, NULL
, NULL
);
1120 /* End of tfc_wwn_fabric_stats_cit */
1122 /* Start of tfc_wwn_cit */
1124 static struct config_group
*target_fabric_make_wwn(
1125 struct config_group
*group
,
1128 struct target_fabric_configfs
*tf
= container_of(group
,
1129 struct target_fabric_configfs
, tf_group
);
1132 if (!tf
->tf_ops
->fabric_make_wwn
) {
1133 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1134 return ERR_PTR(-ENOSYS
);
1137 wwn
= tf
->tf_ops
->fabric_make_wwn(tf
, group
, name
);
1138 if (!wwn
|| IS_ERR(wwn
))
1139 return ERR_PTR(-EINVAL
);
1143 * Setup default groups from pre-allocated wwn->wwn_default_groups
1145 wwn
->wwn_group
.default_groups
= wwn
->wwn_default_groups
;
1146 wwn
->wwn_group
.default_groups
[0] = &wwn
->fabric_stat_group
;
1147 wwn
->wwn_group
.default_groups
[1] = NULL
;
1149 config_group_init_type_name(&wwn
->wwn_group
, name
, &tf
->tf_tpg_cit
);
1150 config_group_init_type_name(&wwn
->fabric_stat_group
, "fabric_statistics",
1151 &tf
->tf_wwn_fabric_stats_cit
);
1153 return &wwn
->wwn_group
;
1156 static void target_fabric_drop_wwn(
1157 struct config_group
*group
,
1158 struct config_item
*item
)
1160 struct se_wwn
*wwn
= container_of(to_config_group(item
),
1161 struct se_wwn
, wwn_group
);
1162 struct config_item
*df_item
;
1163 struct config_group
*cg
= &wwn
->wwn_group
;
1166 for (i
= 0; cg
->default_groups
[i
]; i
++) {
1167 df_item
= &cg
->default_groups
[i
]->cg_item
;
1168 cg
->default_groups
[i
] = NULL
;
1169 config_item_put(df_item
);
1172 config_item_put(item
);
1175 static struct configfs_group_operations target_fabric_wwn_group_ops
= {
1176 .make_group
= target_fabric_make_wwn
,
1177 .drop_item
= target_fabric_drop_wwn
,
1180 * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1182 CONFIGFS_EATTR_OPS(target_fabric_wwn
, target_fabric_configfs
, tf_group
);
1184 static struct configfs_item_operations target_fabric_wwn_item_ops
= {
1185 .show_attribute
= target_fabric_wwn_attr_show
,
1186 .store_attribute
= target_fabric_wwn_attr_store
,
1189 TF_CIT_SETUP_DRV(wwn
, &target_fabric_wwn_item_ops
, &target_fabric_wwn_group_ops
);
1191 /* End of tfc_wwn_cit */
1193 /* Start of tfc_discovery_cit */
1195 CONFIGFS_EATTR_OPS(target_fabric_discovery
, target_fabric_configfs
,
1198 static struct configfs_item_operations target_fabric_discovery_item_ops
= {
1199 .show_attribute
= target_fabric_discovery_attr_show
,
1200 .store_attribute
= target_fabric_discovery_attr_store
,
1203 TF_CIT_SETUP_DRV(discovery
, &target_fabric_discovery_item_ops
, NULL
);
1205 /* End of tfc_discovery_cit */
1207 int target_fabric_setup_cits(struct target_fabric_configfs
*tf
)
1209 target_fabric_setup_discovery_cit(tf
);
1210 target_fabric_setup_wwn_cit(tf
);
1211 target_fabric_setup_wwn_fabric_stats_cit(tf
);
1212 target_fabric_setup_tpg_cit(tf
);
1213 target_fabric_setup_tpg_base_cit(tf
);
1214 target_fabric_setup_tpg_port_cit(tf
);
1215 target_fabric_setup_tpg_port_stat_cit(tf
);
1216 target_fabric_setup_tpg_lun_cit(tf
);
1217 target_fabric_setup_tpg_np_cit(tf
);
1218 target_fabric_setup_tpg_np_base_cit(tf
);
1219 target_fabric_setup_tpg_attrib_cit(tf
);
1220 target_fabric_setup_tpg_auth_cit(tf
);
1221 target_fabric_setup_tpg_param_cit(tf
);
1222 target_fabric_setup_tpg_nacl_cit(tf
);
1223 target_fabric_setup_tpg_nacl_base_cit(tf
);
1224 target_fabric_setup_tpg_nacl_attrib_cit(tf
);
1225 target_fabric_setup_tpg_nacl_auth_cit(tf
);
1226 target_fabric_setup_tpg_nacl_param_cit(tf
);
1227 target_fabric_setup_tpg_nacl_stat_cit(tf
);
1228 target_fabric_setup_tpg_mappedlun_cit(tf
);
1229 target_fabric_setup_tpg_mappedlun_stat_cit(tf
);