1 /*******************************************************************************
2 * Filename: target_core_fabric_configfs.c
4 * This file contains generic fabric module configfs infrastructure for
7 * Copyright (c) 2010,2011 Rising Tide Systems
8 * Copyright (c) 2010,2011 Linux-iSCSI.org
10 * Copyright (c) Nicholas A. Bellinger <nab@linux-iscsi.org>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 ****************************************************************************/
23 #include <linux/module.h>
24 #include <linux/moduleparam.h>
25 #include <generated/utsrelease.h>
26 #include <linux/utsname.h>
27 #include <linux/init.h>
29 #include <linux/namei.h>
30 #include <linux/slab.h>
31 #include <linux/types.h>
32 #include <linux/delay.h>
33 #include <linux/unistd.h>
34 #include <linux/string.h>
35 #include <linux/syscalls.h>
36 #include <linux/configfs.h>
38 #include <target/target_core_base.h>
39 #include <target/target_core_device.h>
40 #include <target/target_core_tpg.h>
41 #include <target/target_core_transport.h>
42 #include <target/target_core_fabric_ops.h>
43 #include <target/target_core_fabric_configfs.h>
44 #include <target/target_core_configfs.h>
45 #include <target/configfs_macros.h>
47 #include "target_core_alua.h"
48 #include "target_core_hba.h"
49 #include "target_core_pr.h"
50 #include "target_core_stat.h"
52 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
53 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
55 struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \
56 struct config_item_type *cit = &tfc->tfc_##_name##_cit; \
58 cit->ct_item_ops = _item_ops; \
59 cit->ct_group_ops = _group_ops; \
60 cit->ct_attrs = _attrs; \
61 cit->ct_owner = tf->tf_module; \
62 pr_debug("Setup generic %s\n", __stringify(_name)); \
65 /* Start of tfc_tpg_mappedlun_cit */
67 static int target_fabric_mappedlun_link(
68 struct config_item
*lun_acl_ci
,
69 struct config_item
*lun_ci
)
71 struct se_dev_entry
*deve
;
72 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
73 struct se_lun
, lun_group
);
74 struct se_lun_acl
*lacl
= container_of(to_config_group(lun_acl_ci
),
75 struct se_lun_acl
, se_lun_group
);
76 struct se_portal_group
*se_tpg
;
77 struct config_item
*nacl_ci
, *tpg_ci
, *tpg_ci_s
, *wwn_ci
, *wwn_ci_s
;
78 int ret
= 0, lun_access
;
80 * Ensure that the source port exists
82 if (!lun
->lun_sep
|| !lun
->lun_sep
->sep_tpg
) {
83 pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
84 "_tpg does not exist\n");
87 se_tpg
= lun
->lun_sep
->sep_tpg
;
89 nacl_ci
= &lun_acl_ci
->ci_parent
->ci_group
->cg_item
;
90 tpg_ci
= &nacl_ci
->ci_group
->cg_item
;
91 wwn_ci
= &tpg_ci
->ci_group
->cg_item
;
92 tpg_ci_s
= &lun_ci
->ci_parent
->ci_group
->cg_item
;
93 wwn_ci_s
= &tpg_ci_s
->ci_group
->cg_item
;
95 * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
97 if (strcmp(config_item_name(wwn_ci
), config_item_name(wwn_ci_s
))) {
98 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
99 config_item_name(wwn_ci
));
102 if (strcmp(config_item_name(tpg_ci
), config_item_name(tpg_ci_s
))) {
103 pr_err("Illegal Initiator ACL Symlink outside of %s"
104 " TPGT: %s\n", config_item_name(wwn_ci
),
105 config_item_name(tpg_ci
));
109 * If this struct se_node_acl was dynamically generated with
110 * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
111 * which be will write protected (READ-ONLY) when
112 * tpg_1/attrib/demo_mode_write_protect=1
114 spin_lock_irq(&lacl
->se_lun_nacl
->device_list_lock
);
115 deve
= &lacl
->se_lun_nacl
->device_list
[lacl
->mapped_lun
];
116 if (deve
->lun_flags
& TRANSPORT_LUNFLAGS_INITIATOR_ACCESS
)
117 lun_access
= deve
->lun_flags
;
120 (se_tpg
->se_tpg_tfo
->tpg_check_prod_mode_write_protect(
121 se_tpg
)) ? TRANSPORT_LUNFLAGS_READ_ONLY
:
122 TRANSPORT_LUNFLAGS_READ_WRITE
;
123 spin_unlock_irq(&lacl
->se_lun_nacl
->device_list_lock
);
125 * Determine the actual mapped LUN value user wants..
127 * This value is what the SCSI Initiator actually sees the
128 * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
130 ret
= core_dev_add_initiator_node_lun_acl(se_tpg
, lacl
,
131 lun
->unpacked_lun
, lun_access
);
133 return (ret
< 0) ? -EINVAL
: 0;
136 static int target_fabric_mappedlun_unlink(
137 struct config_item
*lun_acl_ci
,
138 struct config_item
*lun_ci
)
141 struct se_lun_acl
*lacl
= container_of(to_config_group(lun_acl_ci
),
142 struct se_lun_acl
, se_lun_group
);
143 struct se_node_acl
*nacl
= lacl
->se_lun_nacl
;
144 struct se_dev_entry
*deve
= &nacl
->device_list
[lacl
->mapped_lun
];
145 struct se_portal_group
*se_tpg
;
147 * Determine if the underlying MappedLUN has already been released..
152 lun
= container_of(to_config_group(lun_ci
), struct se_lun
, lun_group
);
153 se_tpg
= lun
->lun_sep
->sep_tpg
;
155 core_dev_del_initiator_node_lun_acl(se_tpg
, lun
, lacl
);
159 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun
, se_lun_acl
);
160 #define TCM_MAPPEDLUN_ATTR(_name, _mode) \
161 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
162 __CONFIGFS_EATTR(_name, _mode, \
163 target_fabric_mappedlun_show_##_name, \
164 target_fabric_mappedlun_store_##_name);
166 static ssize_t
target_fabric_mappedlun_show_write_protect(
167 struct se_lun_acl
*lacl
,
170 struct se_node_acl
*se_nacl
= lacl
->se_lun_nacl
;
171 struct se_dev_entry
*deve
;
174 spin_lock_irq(&se_nacl
->device_list_lock
);
175 deve
= &se_nacl
->device_list
[lacl
->mapped_lun
];
176 len
= sprintf(page
, "%d\n",
177 (deve
->lun_flags
& TRANSPORT_LUNFLAGS_READ_ONLY
) ?
179 spin_unlock_irq(&se_nacl
->device_list_lock
);
184 static ssize_t
target_fabric_mappedlun_store_write_protect(
185 struct se_lun_acl
*lacl
,
189 struct se_node_acl
*se_nacl
= lacl
->se_lun_nacl
;
190 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
193 if (strict_strtoul(page
, 0, &op
))
196 if ((op
!= 1) && (op
!= 0))
199 core_update_device_list_access(lacl
->mapped_lun
, (op
) ?
200 TRANSPORT_LUNFLAGS_READ_ONLY
:
201 TRANSPORT_LUNFLAGS_READ_WRITE
,
204 pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
205 " Mapped LUN: %u Write Protect bit to %s\n",
206 se_tpg
->se_tpg_tfo
->get_fabric_name(),
207 lacl
->initiatorname
, lacl
->mapped_lun
, (op
) ? "ON" : "OFF");
213 TCM_MAPPEDLUN_ATTR(write_protect
, S_IRUGO
| S_IWUSR
);
215 CONFIGFS_EATTR_OPS(target_fabric_mappedlun
, se_lun_acl
, se_lun_group
);
217 static void target_fabric_mappedlun_release(struct config_item
*item
)
219 struct se_lun_acl
*lacl
= container_of(to_config_group(item
),
220 struct se_lun_acl
, se_lun_group
);
221 struct se_portal_group
*se_tpg
= lacl
->se_lun_nacl
->se_tpg
;
223 core_dev_free_initiator_node_lun_acl(se_tpg
, lacl
);
226 static struct configfs_attribute
*target_fabric_mappedlun_attrs
[] = {
227 &target_fabric_mappedlun_write_protect
.attr
,
231 static struct configfs_item_operations target_fabric_mappedlun_item_ops
= {
232 .release
= target_fabric_mappedlun_release
,
233 .show_attribute
= target_fabric_mappedlun_attr_show
,
234 .store_attribute
= target_fabric_mappedlun_attr_store
,
235 .allow_link
= target_fabric_mappedlun_link
,
236 .drop_link
= target_fabric_mappedlun_unlink
,
239 TF_CIT_SETUP(tpg_mappedlun
, &target_fabric_mappedlun_item_ops
, NULL
,
240 target_fabric_mappedlun_attrs
);
242 /* End of tfc_tpg_mappedlun_cit */
244 /* Start of tfc_tpg_mappedlun_port_cit */
246 static struct config_group
*target_core_mappedlun_stat_mkdir(
247 struct config_group
*group
,
250 return ERR_PTR(-ENOSYS
);
253 static void target_core_mappedlun_stat_rmdir(
254 struct config_group
*group
,
255 struct config_item
*item
)
260 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops
= {
261 .make_group
= target_core_mappedlun_stat_mkdir
,
262 .drop_item
= target_core_mappedlun_stat_rmdir
,
265 TF_CIT_SETUP(tpg_mappedlun_stat
, NULL
, &target_fabric_mappedlun_stat_group_ops
,
268 /* End of tfc_tpg_mappedlun_port_cit */
270 /* Start of tfc_tpg_nacl_attrib_cit */
272 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib
, se_node_acl
, acl_attrib_group
);
274 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops
= {
275 .show_attribute
= target_fabric_nacl_attrib_attr_show
,
276 .store_attribute
= target_fabric_nacl_attrib_attr_store
,
279 TF_CIT_SETUP(tpg_nacl_attrib
, &target_fabric_nacl_attrib_item_ops
, NULL
, NULL
);
281 /* End of tfc_tpg_nacl_attrib_cit */
283 /* Start of tfc_tpg_nacl_auth_cit */
285 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth
, se_node_acl
, acl_auth_group
);
287 static struct configfs_item_operations target_fabric_nacl_auth_item_ops
= {
288 .show_attribute
= target_fabric_nacl_auth_attr_show
,
289 .store_attribute
= target_fabric_nacl_auth_attr_store
,
292 TF_CIT_SETUP(tpg_nacl_auth
, &target_fabric_nacl_auth_item_ops
, NULL
, NULL
);
294 /* End of tfc_tpg_nacl_auth_cit */
296 /* Start of tfc_tpg_nacl_param_cit */
298 CONFIGFS_EATTR_OPS(target_fabric_nacl_param
, se_node_acl
, acl_param_group
);
300 static struct configfs_item_operations target_fabric_nacl_param_item_ops
= {
301 .show_attribute
= target_fabric_nacl_param_attr_show
,
302 .store_attribute
= target_fabric_nacl_param_attr_store
,
305 TF_CIT_SETUP(tpg_nacl_param
, &target_fabric_nacl_param_item_ops
, NULL
, NULL
);
307 /* End of tfc_tpg_nacl_param_cit */
309 /* Start of tfc_tpg_nacl_base_cit */
311 CONFIGFS_EATTR_OPS(target_fabric_nacl_base
, se_node_acl
, acl_group
);
313 static struct config_group
*target_fabric_make_mappedlun(
314 struct config_group
*group
,
317 struct se_node_acl
*se_nacl
= container_of(group
,
318 struct se_node_acl
, acl_group
);
319 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
320 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
321 struct se_lun_acl
*lacl
;
322 struct config_item
*acl_ci
;
323 struct config_group
*lacl_cg
= NULL
, *ml_stat_grp
= NULL
;
325 unsigned long mapped_lun
;
328 acl_ci
= &group
->cg_item
;
330 pr_err("Unable to locatel acl_ci\n");
334 buf
= kzalloc(strlen(name
) + 1, GFP_KERNEL
);
336 pr_err("Unable to allocate memory for name buf\n");
337 return ERR_PTR(-ENOMEM
);
339 snprintf(buf
, strlen(name
) + 1, "%s", name
);
341 * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
343 if (strstr(buf
, "lun_") != buf
) {
344 pr_err("Unable to locate \"lun_\" from buf: %s"
345 " name: %s\n", buf
, name
);
350 * Determine the Mapped LUN value. This is what the SCSI Initiator
351 * Port will actually see.
353 if (strict_strtoul(buf
+ 4, 0, &mapped_lun
) || mapped_lun
> UINT_MAX
) {
358 lacl
= core_dev_init_initiator_node_lun_acl(se_tpg
, mapped_lun
,
359 config_item_name(acl_ci
), &ret
);
365 lacl_cg
= &lacl
->se_lun_group
;
366 lacl_cg
->default_groups
= kzalloc(sizeof(struct config_group
) * 2,
368 if (!lacl_cg
->default_groups
) {
369 pr_err("Unable to allocate lacl_cg->default_groups\n");
374 config_group_init_type_name(&lacl
->se_lun_group
, name
,
375 &TF_CIT_TMPL(tf
)->tfc_tpg_mappedlun_cit
);
376 config_group_init_type_name(&lacl
->ml_stat_grps
.stat_group
,
377 "statistics", &TF_CIT_TMPL(tf
)->tfc_tpg_mappedlun_stat_cit
);
378 lacl_cg
->default_groups
[0] = &lacl
->ml_stat_grps
.stat_group
;
379 lacl_cg
->default_groups
[1] = NULL
;
381 ml_stat_grp
= &lacl
->ml_stat_grps
.stat_group
;
382 ml_stat_grp
->default_groups
= kzalloc(sizeof(struct config_group
) * 3,
384 if (!ml_stat_grp
->default_groups
) {
385 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
389 target_stat_setup_mappedlun_default_groups(lacl
);
392 return &lacl
->se_lun_group
;
395 kfree(lacl_cg
->default_groups
);
400 static void target_fabric_drop_mappedlun(
401 struct config_group
*group
,
402 struct config_item
*item
)
404 struct se_lun_acl
*lacl
= container_of(to_config_group(item
),
405 struct se_lun_acl
, se_lun_group
);
406 struct config_item
*df_item
;
407 struct config_group
*lacl_cg
= NULL
, *ml_stat_grp
= NULL
;
410 ml_stat_grp
= &lacl
->ml_stat_grps
.stat_group
;
411 for (i
= 0; ml_stat_grp
->default_groups
[i
]; i
++) {
412 df_item
= &ml_stat_grp
->default_groups
[i
]->cg_item
;
413 ml_stat_grp
->default_groups
[i
] = NULL
;
414 config_item_put(df_item
);
416 kfree(ml_stat_grp
->default_groups
);
418 lacl_cg
= &lacl
->se_lun_group
;
419 for (i
= 0; lacl_cg
->default_groups
[i
]; i
++) {
420 df_item
= &lacl_cg
->default_groups
[i
]->cg_item
;
421 lacl_cg
->default_groups
[i
] = NULL
;
422 config_item_put(df_item
);
424 kfree(lacl_cg
->default_groups
);
426 config_item_put(item
);
429 static void target_fabric_nacl_base_release(struct config_item
*item
)
431 struct se_node_acl
*se_nacl
= container_of(to_config_group(item
),
432 struct se_node_acl
, acl_group
);
433 struct se_portal_group
*se_tpg
= se_nacl
->se_tpg
;
434 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
436 tf
->tf_ops
.fabric_drop_nodeacl(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(tpg_nacl_base
, &target_fabric_nacl_base_item_ops
,
451 &target_fabric_nacl_base_group_ops
, NULL
);
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 if (!tf
->tf_ops
.fabric_make_nodeacl
) {
477 pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n");
478 return ERR_PTR(-ENOSYS
);
481 se_nacl
= tf
->tf_ops
.fabric_make_nodeacl(se_tpg
, group
, name
);
483 return ERR_CAST(se_nacl
);
485 nacl_cg
= &se_nacl
->acl_group
;
486 nacl_cg
->default_groups
= se_nacl
->acl_default_groups
;
487 nacl_cg
->default_groups
[0] = &se_nacl
->acl_attrib_group
;
488 nacl_cg
->default_groups
[1] = &se_nacl
->acl_auth_group
;
489 nacl_cg
->default_groups
[2] = &se_nacl
->acl_param_group
;
490 nacl_cg
->default_groups
[3] = &se_nacl
->acl_fabric_stat_group
;
491 nacl_cg
->default_groups
[4] = NULL
;
493 config_group_init_type_name(&se_nacl
->acl_group
, name
,
494 &TF_CIT_TMPL(tf
)->tfc_tpg_nacl_base_cit
);
495 config_group_init_type_name(&se_nacl
->acl_attrib_group
, "attrib",
496 &TF_CIT_TMPL(tf
)->tfc_tpg_nacl_attrib_cit
);
497 config_group_init_type_name(&se_nacl
->acl_auth_group
, "auth",
498 &TF_CIT_TMPL(tf
)->tfc_tpg_nacl_auth_cit
);
499 config_group_init_type_name(&se_nacl
->acl_param_group
, "param",
500 &TF_CIT_TMPL(tf
)->tfc_tpg_nacl_param_cit
);
501 config_group_init_type_name(&se_nacl
->acl_fabric_stat_group
,
503 &TF_CIT_TMPL(tf
)->tfc_tpg_nacl_stat_cit
);
505 return &se_nacl
->acl_group
;
508 static void target_fabric_drop_nodeacl(
509 struct config_group
*group
,
510 struct config_item
*item
)
512 struct se_node_acl
*se_nacl
= container_of(to_config_group(item
),
513 struct se_node_acl
, acl_group
);
514 struct config_item
*df_item
;
515 struct config_group
*nacl_cg
;
518 nacl_cg
= &se_nacl
->acl_group
;
519 for (i
= 0; nacl_cg
->default_groups
[i
]; i
++) {
520 df_item
= &nacl_cg
->default_groups
[i
]->cg_item
;
521 nacl_cg
->default_groups
[i
] = NULL
;
522 config_item_put(df_item
);
525 * struct se_node_acl free is done in target_fabric_nacl_base_release()
527 config_item_put(item
);
530 static struct configfs_group_operations target_fabric_nacl_group_ops
= {
531 .make_group
= target_fabric_make_nodeacl
,
532 .drop_item
= target_fabric_drop_nodeacl
,
535 TF_CIT_SETUP(tpg_nacl
, NULL
, &target_fabric_nacl_group_ops
, NULL
);
537 /* End of tfc_tpg_nacl_cit */
539 /* Start of tfc_tpg_np_base_cit */
541 CONFIGFS_EATTR_OPS(target_fabric_np_base
, se_tpg_np
, tpg_np_group
);
543 static void target_fabric_np_base_release(struct config_item
*item
)
545 struct se_tpg_np
*se_tpg_np
= container_of(to_config_group(item
),
546 struct se_tpg_np
, tpg_np_group
);
547 struct se_portal_group
*se_tpg
= se_tpg_np
->tpg_np_parent
;
548 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
550 tf
->tf_ops
.fabric_drop_np(se_tpg_np
);
553 static struct configfs_item_operations target_fabric_np_base_item_ops
= {
554 .release
= target_fabric_np_base_release
,
555 .show_attribute
= target_fabric_np_base_attr_show
,
556 .store_attribute
= target_fabric_np_base_attr_store
,
559 TF_CIT_SETUP(tpg_np_base
, &target_fabric_np_base_item_ops
, NULL
, NULL
);
561 /* End of tfc_tpg_np_base_cit */
563 /* Start of tfc_tpg_np_cit */
565 static struct config_group
*target_fabric_make_np(
566 struct config_group
*group
,
569 struct se_portal_group
*se_tpg
= container_of(group
,
570 struct se_portal_group
, tpg_np_group
);
571 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
572 struct se_tpg_np
*se_tpg_np
;
574 if (!tf
->tf_ops
.fabric_make_np
) {
575 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
576 return ERR_PTR(-ENOSYS
);
579 se_tpg_np
= tf
->tf_ops
.fabric_make_np(se_tpg
, group
, name
);
580 if (!se_tpg_np
|| IS_ERR(se_tpg_np
))
581 return ERR_PTR(-EINVAL
);
583 se_tpg_np
->tpg_np_parent
= se_tpg
;
584 config_group_init_type_name(&se_tpg_np
->tpg_np_group
, name
,
585 &TF_CIT_TMPL(tf
)->tfc_tpg_np_base_cit
);
587 return &se_tpg_np
->tpg_np_group
;
590 static void target_fabric_drop_np(
591 struct config_group
*group
,
592 struct config_item
*item
)
595 * struct se_tpg_np is released via target_fabric_np_base_release()
597 config_item_put(item
);
600 static struct configfs_group_operations target_fabric_np_group_ops
= {
601 .make_group
= &target_fabric_make_np
,
602 .drop_item
= &target_fabric_drop_np
,
605 TF_CIT_SETUP(tpg_np
, NULL
, &target_fabric_np_group_ops
, NULL
);
607 /* End of tfc_tpg_np_cit */
609 /* Start of tfc_tpg_port_cit */
611 CONFIGFS_EATTR_STRUCT(target_fabric_port
, se_lun
);
612 #define TCM_PORT_ATTR(_name, _mode) \
613 static struct target_fabric_port_attribute target_fabric_port_##_name = \
614 __CONFIGFS_EATTR(_name, _mode, \
615 target_fabric_port_show_attr_##_name, \
616 target_fabric_port_store_attr_##_name);
618 #define TCM_PORT_ATTOR_RO(_name) \
619 __CONFIGFS_EATTR_RO(_name, \
620 target_fabric_port_show_attr_##_name);
625 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_gp(
629 if (!lun
|| !lun
->lun_sep
)
632 return core_alua_show_tg_pt_gp_info(lun
->lun_sep
, page
);
635 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_gp(
640 if (!lun
|| !lun
->lun_sep
)
643 return core_alua_store_tg_pt_gp_info(lun
->lun_sep
, page
, count
);
646 TCM_PORT_ATTR(alua_tg_pt_gp
, S_IRUGO
| S_IWUSR
);
651 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_offline(
655 if (!lun
|| !lun
->lun_sep
)
658 return core_alua_show_offline_bit(lun
, page
);
661 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_offline(
666 if (!lun
|| !lun
->lun_sep
)
669 return core_alua_store_offline_bit(lun
, page
, count
);
672 TCM_PORT_ATTR(alua_tg_pt_offline
, S_IRUGO
| S_IWUSR
);
677 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_status(
681 if (!lun
|| !lun
->lun_sep
)
684 return core_alua_show_secondary_status(lun
, page
);
687 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_status(
692 if (!lun
|| !lun
->lun_sep
)
695 return core_alua_store_secondary_status(lun
, page
, count
);
698 TCM_PORT_ATTR(alua_tg_pt_status
, S_IRUGO
| S_IWUSR
);
701 * alua_tg_pt_write_md
703 static ssize_t
target_fabric_port_show_attr_alua_tg_pt_write_md(
707 if (!lun
|| !lun
->lun_sep
)
710 return core_alua_show_secondary_write_metadata(lun
, page
);
713 static ssize_t
target_fabric_port_store_attr_alua_tg_pt_write_md(
718 if (!lun
|| !lun
->lun_sep
)
721 return core_alua_store_secondary_write_metadata(lun
, page
, count
);
724 TCM_PORT_ATTR(alua_tg_pt_write_md
, S_IRUGO
| S_IWUSR
);
727 static struct configfs_attribute
*target_fabric_port_attrs
[] = {
728 &target_fabric_port_alua_tg_pt_gp
.attr
,
729 &target_fabric_port_alua_tg_pt_offline
.attr
,
730 &target_fabric_port_alua_tg_pt_status
.attr
,
731 &target_fabric_port_alua_tg_pt_write_md
.attr
,
735 CONFIGFS_EATTR_OPS(target_fabric_port
, se_lun
, lun_group
);
737 static int target_fabric_port_link(
738 struct config_item
*lun_ci
,
739 struct config_item
*se_dev_ci
)
741 struct config_item
*tpg_ci
;
742 struct se_device
*dev
;
743 struct se_lun
*lun
= container_of(to_config_group(lun_ci
),
744 struct se_lun
, lun_group
);
745 struct se_lun
*lun_p
;
746 struct se_portal_group
*se_tpg
;
747 struct se_subsystem_dev
*se_dev
= container_of(
748 to_config_group(se_dev_ci
), struct se_subsystem_dev
,
750 struct target_fabric_configfs
*tf
;
753 tpg_ci
= &lun_ci
->ci_parent
->ci_group
->cg_item
;
754 se_tpg
= container_of(to_config_group(tpg_ci
),
755 struct se_portal_group
, tpg_group
);
756 tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
758 if (lun
->lun_se_dev
!= NULL
) {
759 pr_err("Port Symlink already exists\n");
763 dev
= se_dev
->se_dev_ptr
;
765 pr_err("Unable to locate struct se_device pointer from"
766 " %s\n", config_item_name(se_dev_ci
));
771 lun_p
= core_dev_add_lun(se_tpg
, dev
->se_hba
, dev
,
773 if (IS_ERR(lun_p
) || !lun_p
) {
774 pr_err("core_dev_add_lun() failed\n");
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_sep
->sep_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
->unpacked_lun
);
815 static struct configfs_item_operations target_fabric_port_item_ops
= {
816 .show_attribute
= target_fabric_port_attr_show
,
817 .store_attribute
= target_fabric_port_attr_store
,
818 .allow_link
= target_fabric_port_link
,
819 .drop_link
= target_fabric_port_unlink
,
822 TF_CIT_SETUP(tpg_port
, &target_fabric_port_item_ops
, NULL
, target_fabric_port_attrs
);
824 /* End of tfc_tpg_port_cit */
826 /* Start of tfc_tpg_port_stat_cit */
828 static struct config_group
*target_core_port_stat_mkdir(
829 struct config_group
*group
,
832 return ERR_PTR(-ENOSYS
);
835 static void target_core_port_stat_rmdir(
836 struct config_group
*group
,
837 struct config_item
*item
)
842 static struct configfs_group_operations target_fabric_port_stat_group_ops
= {
843 .make_group
= target_core_port_stat_mkdir
,
844 .drop_item
= target_core_port_stat_rmdir
,
847 TF_CIT_SETUP(tpg_port_stat
, NULL
, &target_fabric_port_stat_group_ops
, NULL
);
849 /* End of tfc_tpg_port_stat_cit */
851 /* Start of tfc_tpg_lun_cit */
853 static struct config_group
*target_fabric_make_lun(
854 struct config_group
*group
,
858 struct se_portal_group
*se_tpg
= container_of(group
,
859 struct se_portal_group
, tpg_lun_group
);
860 struct target_fabric_configfs
*tf
= se_tpg
->se_tpg_wwn
->wwn_tf
;
861 struct config_group
*lun_cg
= NULL
, *port_stat_grp
= NULL
;
862 unsigned long unpacked_lun
;
865 if (strstr(name
, "lun_") != name
) {
866 pr_err("Unable to locate \'_\" in"
867 " \"lun_$LUN_NUMBER\"\n");
868 return ERR_PTR(-EINVAL
);
870 if (strict_strtoul(name
+ 4, 0, &unpacked_lun
) || unpacked_lun
> UINT_MAX
)
871 return ERR_PTR(-EINVAL
);
873 lun
= core_get_lun_from_tpg(se_tpg
, unpacked_lun
);
875 return ERR_PTR(-EINVAL
);
877 lun_cg
= &lun
->lun_group
;
878 lun_cg
->default_groups
= kzalloc(sizeof(struct config_group
) * 2,
880 if (!lun_cg
->default_groups
) {
881 pr_err("Unable to allocate lun_cg->default_groups\n");
882 return ERR_PTR(-ENOMEM
);
885 config_group_init_type_name(&lun
->lun_group
, name
,
886 &TF_CIT_TMPL(tf
)->tfc_tpg_port_cit
);
887 config_group_init_type_name(&lun
->port_stat_grps
.stat_group
,
888 "statistics", &TF_CIT_TMPL(tf
)->tfc_tpg_port_stat_cit
);
889 lun_cg
->default_groups
[0] = &lun
->port_stat_grps
.stat_group
;
890 lun_cg
->default_groups
[1] = NULL
;
892 port_stat_grp
= &lun
->port_stat_grps
.stat_group
;
893 port_stat_grp
->default_groups
= kzalloc(sizeof(struct config_group
) * 3,
895 if (!port_stat_grp
->default_groups
) {
896 pr_err("Unable to allocate port_stat_grp->default_groups\n");
900 target_stat_setup_port_default_groups(lun
);
902 return &lun
->lun_group
;
905 kfree(lun_cg
->default_groups
);
906 return ERR_PTR(errno
);
909 static void target_fabric_drop_lun(
910 struct config_group
*group
,
911 struct config_item
*item
)
913 struct se_lun
*lun
= container_of(to_config_group(item
),
914 struct se_lun
, lun_group
);
915 struct config_item
*df_item
;
916 struct config_group
*lun_cg
, *port_stat_grp
;
919 port_stat_grp
= &lun
->port_stat_grps
.stat_group
;
920 for (i
= 0; port_stat_grp
->default_groups
[i
]; i
++) {
921 df_item
= &port_stat_grp
->default_groups
[i
]->cg_item
;
922 port_stat_grp
->default_groups
[i
] = NULL
;
923 config_item_put(df_item
);
925 kfree(port_stat_grp
->default_groups
);
927 lun_cg
= &lun
->lun_group
;
928 for (i
= 0; lun_cg
->default_groups
[i
]; i
++) {
929 df_item
= &lun_cg
->default_groups
[i
]->cg_item
;
930 lun_cg
->default_groups
[i
] = NULL
;
931 config_item_put(df_item
);
933 kfree(lun_cg
->default_groups
);
935 config_item_put(item
);
938 static struct configfs_group_operations target_fabric_lun_group_ops
= {
939 .make_group
= &target_fabric_make_lun
,
940 .drop_item
= &target_fabric_drop_lun
,
943 TF_CIT_SETUP(tpg_lun
, NULL
, &target_fabric_lun_group_ops
, NULL
);
945 /* End of tfc_tpg_lun_cit */
947 /* Start of tfc_tpg_attrib_cit */
949 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib
, se_portal_group
, tpg_attrib_group
);
951 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops
= {
952 .show_attribute
= target_fabric_tpg_attrib_attr_show
,
953 .store_attribute
= target_fabric_tpg_attrib_attr_store
,
956 TF_CIT_SETUP(tpg_attrib
, &target_fabric_tpg_attrib_item_ops
, NULL
, NULL
);
958 /* End of tfc_tpg_attrib_cit */
960 /* Start of tfc_tpg_param_cit */
962 CONFIGFS_EATTR_OPS(target_fabric_tpg_param
, se_portal_group
, tpg_param_group
);
964 static struct configfs_item_operations target_fabric_tpg_param_item_ops
= {
965 .show_attribute
= target_fabric_tpg_param_attr_show
,
966 .store_attribute
= target_fabric_tpg_param_attr_store
,
969 TF_CIT_SETUP(tpg_param
, &target_fabric_tpg_param_item_ops
, NULL
, NULL
);
971 /* End of tfc_tpg_param_cit */
973 /* Start of tfc_tpg_base_cit */
975 * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
977 CONFIGFS_EATTR_OPS(target_fabric_tpg
, se_portal_group
, tpg_group
);
979 static void target_fabric_tpg_release(struct config_item
*item
)
981 struct se_portal_group
*se_tpg
= container_of(to_config_group(item
),
982 struct se_portal_group
, tpg_group
);
983 struct se_wwn
*wwn
= se_tpg
->se_tpg_wwn
;
984 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
986 tf
->tf_ops
.fabric_drop_tpg(se_tpg
);
989 static struct configfs_item_operations target_fabric_tpg_base_item_ops
= {
990 .release
= target_fabric_tpg_release
,
991 .show_attribute
= target_fabric_tpg_attr_show
,
992 .store_attribute
= target_fabric_tpg_attr_store
,
995 TF_CIT_SETUP(tpg_base
, &target_fabric_tpg_base_item_ops
, NULL
, NULL
);
997 /* End of tfc_tpg_base_cit */
999 /* Start of tfc_tpg_cit */
1001 static struct config_group
*target_fabric_make_tpg(
1002 struct config_group
*group
,
1005 struct se_wwn
*wwn
= container_of(group
, struct se_wwn
, wwn_group
);
1006 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
1007 struct se_portal_group
*se_tpg
;
1009 if (!tf
->tf_ops
.fabric_make_tpg
) {
1010 pr_err("tf->tf_ops.fabric_make_tpg is NULL\n");
1011 return ERR_PTR(-ENOSYS
);
1014 se_tpg
= tf
->tf_ops
.fabric_make_tpg(wwn
, group
, name
);
1015 if (!se_tpg
|| IS_ERR(se_tpg
))
1016 return ERR_PTR(-EINVAL
);
1018 * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1020 se_tpg
->tpg_group
.default_groups
= se_tpg
->tpg_default_groups
;
1021 se_tpg
->tpg_group
.default_groups
[0] = &se_tpg
->tpg_lun_group
;
1022 se_tpg
->tpg_group
.default_groups
[1] = &se_tpg
->tpg_np_group
;
1023 se_tpg
->tpg_group
.default_groups
[2] = &se_tpg
->tpg_acl_group
;
1024 se_tpg
->tpg_group
.default_groups
[3] = &se_tpg
->tpg_attrib_group
;
1025 se_tpg
->tpg_group
.default_groups
[4] = &se_tpg
->tpg_param_group
;
1026 se_tpg
->tpg_group
.default_groups
[5] = NULL
;
1028 config_group_init_type_name(&se_tpg
->tpg_group
, name
,
1029 &TF_CIT_TMPL(tf
)->tfc_tpg_base_cit
);
1030 config_group_init_type_name(&se_tpg
->tpg_lun_group
, "lun",
1031 &TF_CIT_TMPL(tf
)->tfc_tpg_lun_cit
);
1032 config_group_init_type_name(&se_tpg
->tpg_np_group
, "np",
1033 &TF_CIT_TMPL(tf
)->tfc_tpg_np_cit
);
1034 config_group_init_type_name(&se_tpg
->tpg_acl_group
, "acls",
1035 &TF_CIT_TMPL(tf
)->tfc_tpg_nacl_cit
);
1036 config_group_init_type_name(&se_tpg
->tpg_attrib_group
, "attrib",
1037 &TF_CIT_TMPL(tf
)->tfc_tpg_attrib_cit
);
1038 config_group_init_type_name(&se_tpg
->tpg_param_group
, "param",
1039 &TF_CIT_TMPL(tf
)->tfc_tpg_param_cit
);
1041 return &se_tpg
->tpg_group
;
1044 static void target_fabric_drop_tpg(
1045 struct config_group
*group
,
1046 struct config_item
*item
)
1048 struct se_portal_group
*se_tpg
= container_of(to_config_group(item
),
1049 struct se_portal_group
, tpg_group
);
1050 struct config_group
*tpg_cg
= &se_tpg
->tpg_group
;
1051 struct config_item
*df_item
;
1054 * Release default groups, but do not release tpg_cg->default_groups
1055 * memory as it is statically allocated at se_tpg->tpg_default_groups.
1057 for (i
= 0; tpg_cg
->default_groups
[i
]; i
++) {
1058 df_item
= &tpg_cg
->default_groups
[i
]->cg_item
;
1059 tpg_cg
->default_groups
[i
] = NULL
;
1060 config_item_put(df_item
);
1063 config_item_put(item
);
1066 static void target_fabric_release_wwn(struct config_item
*item
)
1068 struct se_wwn
*wwn
= container_of(to_config_group(item
),
1069 struct se_wwn
, wwn_group
);
1070 struct target_fabric_configfs
*tf
= wwn
->wwn_tf
;
1072 tf
->tf_ops
.fabric_drop_wwn(wwn
);
1075 static struct configfs_item_operations target_fabric_tpg_item_ops
= {
1076 .release
= target_fabric_release_wwn
,
1079 static struct configfs_group_operations target_fabric_tpg_group_ops
= {
1080 .make_group
= target_fabric_make_tpg
,
1081 .drop_item
= target_fabric_drop_tpg
,
1084 TF_CIT_SETUP(tpg
, &target_fabric_tpg_item_ops
, &target_fabric_tpg_group_ops
,
1087 /* End of tfc_tpg_cit */
1089 /* Start of tfc_wwn_fabric_stats_cit */
1091 * This is used as a placeholder for struct se_wwn->fabric_stat_group
1092 * to allow fabrics access to ->fabric_stat_group->default_groups[]
1094 TF_CIT_SETUP(wwn_fabric_stats
, NULL
, NULL
, NULL
);
1096 /* End of tfc_wwn_fabric_stats_cit */
1098 /* Start of tfc_wwn_cit */
1100 static struct config_group
*target_fabric_make_wwn(
1101 struct config_group
*group
,
1104 struct target_fabric_configfs
*tf
= container_of(group
,
1105 struct target_fabric_configfs
, tf_group
);
1108 if (!tf
->tf_ops
.fabric_make_wwn
) {
1109 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1110 return ERR_PTR(-ENOSYS
);
1113 wwn
= tf
->tf_ops
.fabric_make_wwn(tf
, group
, name
);
1114 if (!wwn
|| IS_ERR(wwn
))
1115 return ERR_PTR(-EINVAL
);
1119 * Setup default groups from pre-allocated wwn->wwn_default_groups
1121 wwn
->wwn_group
.default_groups
= wwn
->wwn_default_groups
;
1122 wwn
->wwn_group
.default_groups
[0] = &wwn
->fabric_stat_group
;
1123 wwn
->wwn_group
.default_groups
[1] = NULL
;
1125 config_group_init_type_name(&wwn
->wwn_group
, name
,
1126 &TF_CIT_TMPL(tf
)->tfc_tpg_cit
);
1127 config_group_init_type_name(&wwn
->fabric_stat_group
, "fabric_statistics",
1128 &TF_CIT_TMPL(tf
)->tfc_wwn_fabric_stats_cit
);
1130 return &wwn
->wwn_group
;
1133 static void target_fabric_drop_wwn(
1134 struct config_group
*group
,
1135 struct config_item
*item
)
1137 struct se_wwn
*wwn
= container_of(to_config_group(item
),
1138 struct se_wwn
, wwn_group
);
1139 struct config_item
*df_item
;
1140 struct config_group
*cg
= &wwn
->wwn_group
;
1143 for (i
= 0; cg
->default_groups
[i
]; i
++) {
1144 df_item
= &cg
->default_groups
[i
]->cg_item
;
1145 cg
->default_groups
[i
] = NULL
;
1146 config_item_put(df_item
);
1149 config_item_put(item
);
1152 static struct configfs_group_operations target_fabric_wwn_group_ops
= {
1153 .make_group
= target_fabric_make_wwn
,
1154 .drop_item
= target_fabric_drop_wwn
,
1157 * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1159 CONFIGFS_EATTR_OPS(target_fabric_wwn
, target_fabric_configfs
, tf_group
);
1161 static struct configfs_item_operations target_fabric_wwn_item_ops
= {
1162 .show_attribute
= target_fabric_wwn_attr_show
,
1163 .store_attribute
= target_fabric_wwn_attr_store
,
1166 TF_CIT_SETUP(wwn
, &target_fabric_wwn_item_ops
, &target_fabric_wwn_group_ops
, NULL
);
1168 /* End of tfc_wwn_cit */
1170 /* Start of tfc_discovery_cit */
1172 CONFIGFS_EATTR_OPS(target_fabric_discovery
, target_fabric_configfs
,
1175 static struct configfs_item_operations target_fabric_discovery_item_ops
= {
1176 .show_attribute
= target_fabric_discovery_attr_show
,
1177 .store_attribute
= target_fabric_discovery_attr_store
,
1180 TF_CIT_SETUP(discovery
, &target_fabric_discovery_item_ops
, NULL
, NULL
);
1182 /* End of tfc_discovery_cit */
1184 int target_fabric_setup_cits(struct target_fabric_configfs
*tf
)
1186 target_fabric_setup_discovery_cit(tf
);
1187 target_fabric_setup_wwn_cit(tf
);
1188 target_fabric_setup_wwn_fabric_stats_cit(tf
);
1189 target_fabric_setup_tpg_cit(tf
);
1190 target_fabric_setup_tpg_base_cit(tf
);
1191 target_fabric_setup_tpg_port_cit(tf
);
1192 target_fabric_setup_tpg_port_stat_cit(tf
);
1193 target_fabric_setup_tpg_lun_cit(tf
);
1194 target_fabric_setup_tpg_np_cit(tf
);
1195 target_fabric_setup_tpg_np_base_cit(tf
);
1196 target_fabric_setup_tpg_attrib_cit(tf
);
1197 target_fabric_setup_tpg_param_cit(tf
);
1198 target_fabric_setup_tpg_nacl_cit(tf
);
1199 target_fabric_setup_tpg_nacl_base_cit(tf
);
1200 target_fabric_setup_tpg_nacl_attrib_cit(tf
);
1201 target_fabric_setup_tpg_nacl_auth_cit(tf
);
1202 target_fabric_setup_tpg_nacl_param_cit(tf
);
1203 target_fabric_setup_tpg_nacl_stat_cit(tf
);
1204 target_fabric_setup_tpg_mappedlun_cit(tf
);
1205 target_fabric_setup_tpg_mappedlun_stat_cit(tf
);