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Merge remote-tracking branch 'asoc/topic/tas5270' into asoc-next
[linux-2.6-block.git] / drivers / target / target_core_configfs.c
CommitLineData
c66ac9db
NB		 1/*******************************************************************************
2 * Filename: target_core_configfs.c
3 *
4 * This file contains ConfigFS logic for the Generic Target Engine project.
5 *
4c76251e 6 * (c) Copyright 2008-2013 Datera, Inc.
c66ac9db
NB		 7 *
8 * Nicholas A. Bellinger <nab@kernel.org>
9 *
10 * based on configfs Copyright (C) 2005 Oracle. All rights reserved.
11 *
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.
16 *
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 ****************************************************************************/
22
23#include <linux/module.h>
24#include <linux/moduleparam.h>
c66ac9db
NB		 25#include <generated/utsrelease.h>
26#include <linux/utsname.h>
27#include <linux/init.h>
28#include <linux/fs.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/parser.h>
36#include <linux/syscalls.h>
37#include <linux/configfs.h>
e3d6f909 38#include <linux/spinlock.h>
c66ac9db
NB		 39
40#include <target/target_core_base.h>
c4795fb2
CH		 41#include <target/target_core_backend.h>
42#include <target/target_core_fabric.h>
c66ac9db 43
e26d99ae 44#include "target_core_internal.h"
c66ac9db 45#include "target_core_alua.h"
c66ac9db
NB		 46#include "target_core_pr.h"
47#include "target_core_rd.h"
f99715ac 48#include "target_core_xcopy.h"
c66ac9db 49
73112edc 50#define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \
0a06d430 51static void target_core_setup_##_name##_cit(struct target_backend *tb) \
73112edc 52{ \
0a06d430 53 struct config_item_type *cit = &tb->tb_##_name##_cit; \
73112edc
NB		 54 \
55 cit->ct_item_ops = _item_ops; \
56 cit->ct_group_ops = _group_ops; \
57 cit->ct_attrs = _attrs; \
0a06d430
CH		 58 cit->ct_owner = tb->ops->owner; \
59 pr_debug("Setup generic %s\n", __stringify(_name)); \
60}
61
62#define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \
63static void target_core_setup_##_name##_cit(struct target_backend *tb) \
64{ \
65 struct config_item_type *cit = &tb->tb_##_name##_cit; \
66 \
67 cit->ct_item_ops = _item_ops; \
68 cit->ct_group_ops = _group_ops; \
69 cit->ct_attrs = tb->ops->tb_##_name##_attrs; \
70 cit->ct_owner = tb->ops->owner; \
73112edc
NB		 71 pr_debug("Setup generic %s\n", __stringify(_name)); \
72}
73
e3d6f909
AG		 74extern struct t10_alua_lu_gp *default_lu_gp;
75
d0f474e5
RD		 76static LIST_HEAD(g_tf_list);
77static DEFINE_MUTEX(g_tf_lock);
c66ac9db 78
e3d6f909
AG		 79static struct config_group target_core_hbagroup;
80static struct config_group alua_group;
81static struct config_group alua_lu_gps_group;
82
c66ac9db
NB		 83static inline struct se_hba *
84item_to_hba(struct config_item *item)
85{
86 return container_of(to_config_group(item), struct se_hba, hba_group);
87}
88
89/*
90 * Attributes for /sys/kernel/config/target/
91 */
2eafd729
CH		 92static ssize_t target_core_item_version_show(struct config_item *item,
93 char *page)
c66ac9db
NB		 94{
95 return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s"
ce8dd25d 96 " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION,
c66ac9db
NB		 97 utsname()->sysname, utsname()->machine);
98}
99
2eafd729 100CONFIGFS_ATTR_RO(target_core_item_, version);
c66ac9db
NB		 101
102static struct target_fabric_configfs *target_core_get_fabric(
103 const char *name)
104{
105 struct target_fabric_configfs *tf;
106
6708bb27 107 if (!name)
c66ac9db
NB		 108 return NULL;
109
110 mutex_lock(&g_tf_lock);
111 list_for_each_entry(tf, &g_tf_list, tf_list) {
0dc2e8d1 112 if (!strcmp(tf->tf_ops->name, name)) {
c66ac9db
NB		 113 atomic_inc(&tf->tf_access_cnt);
114 mutex_unlock(&g_tf_lock);
115 return tf;
116 }
117 }
118 mutex_unlock(&g_tf_lock);
119
120 return NULL;
121}
122
123/*
124 * Called from struct target_core_group_ops->make_group()
125 */
126static struct config_group *target_core_register_fabric(
127 struct config_group *group,
128 const char *name)
129{
130 struct target_fabric_configfs *tf;
131 int ret;
132
6708bb27 133 pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
c66ac9db 134 " %s\n", group, name);
e7b7af6e
RD		 135
136 tf = target_core_get_fabric(name);
137 if (!tf) {
62554910
NB		 138 pr_debug("target_core_register_fabric() trying autoload for %s\n",
139 name);
e7b7af6e 140
c66ac9db 141 /*
e7b7af6e
RD		 142 * Below are some hardcoded request_module() calls to automatically
143 * local fabric modules when the following is called:
c66ac9db 144 *
e7b7af6e 145 * mkdir -p /sys/kernel/config/target/$MODULE_NAME
c66ac9db 146 *
e7b7af6e
RD		 147 * Note that this does not limit which TCM fabric module can be
148 * registered, but simply provids auto loading logic for modules with
149 * mkdir(2) system calls with known TCM fabric modules.
c66ac9db 150 */
e7b7af6e
RD		 151
152 if (!strncmp(name, "iscsi", 5)) {
153 /*
154 * Automatically load the LIO Target fabric module when the
155 * following is called:
156 *
157 * mkdir -p $CONFIGFS/target/iscsi
158 */
159 ret = request_module("iscsi_target_mod");
160 if (ret < 0) {
62554910
NB		 161 pr_debug("request_module() failed for"
162 " iscsi_target_mod.ko: %d\n", ret);
e7b7af6e
RD		 163 return ERR_PTR(-EINVAL);
164 }
165 } else if (!strncmp(name, "loopback", 8)) {
166 /*
167 * Automatically load the tcm_loop fabric module when the
168 * following is called:
169 *
170 * mkdir -p $CONFIGFS/target/loopback
171 */
172 ret = request_module("tcm_loop");
173 if (ret < 0) {
62554910
NB		 174 pr_debug("request_module() failed for"
175 " tcm_loop.ko: %d\n", ret);
e7b7af6e
RD		 176 return ERR_PTR(-EINVAL);
177 }
c66ac9db 178 }
e7b7af6e
RD		 179
180 tf = target_core_get_fabric(name);
c66ac9db
NB		 181 }
182
6708bb27 183 if (!tf) {
62554910
NB		 184 pr_debug("target_core_get_fabric() failed for %s\n",
185 name);
c66ac9db
NB		 186 return ERR_PTR(-EINVAL);
187 }
6708bb27 188 pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:"
0dc2e8d1 189 " %s\n", tf->tf_ops->name);
c66ac9db
NB		 190 /*
191 * On a successful target_core_get_fabric() look, the returned
192 * struct target_fabric_configfs *tf will contain a usage reference.
193 */
6708bb27 194 pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
968ebe75 195 &tf->tf_wwn_cit);
c66ac9db 196
968ebe75 197 config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit);
1ae1602d 198
c66ac9db 199 config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
968ebe75 200 &tf->tf_discovery_cit);
1ae1602d 201 configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group);
c66ac9db 202
6708bb27 203 pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
c66ac9db 204 " %s\n", tf->tf_group.cg_item.ci_name);
c66ac9db
NB		 205 return &tf->tf_group;
206}
207
208/*
209 * Called from struct target_core_group_ops->drop_item()
210 */
211static void target_core_deregister_fabric(
212 struct config_group *group,
213 struct config_item *item)
214{
215 struct target_fabric_configfs *tf = container_of(
216 to_config_group(item), struct target_fabric_configfs, tf_group);
c66ac9db 217
6708bb27 218 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in"
c66ac9db
NB		 219 " tf list\n", config_item_name(item));
220
6708bb27 221 pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:"
0dc2e8d1 222 " %s\n", tf->tf_ops->name);
c66ac9db
NB		 223 atomic_dec(&tf->tf_access_cnt);
224
6708bb27 225 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci"
c66ac9db
NB		 226 " %s\n", config_item_name(item));
227
1ae1602d 228 configfs_remove_default_groups(&tf->tf_group);
c66ac9db
NB		 229 config_item_put(item);
230}
231
232static struct configfs_group_operations target_core_fabric_group_ops = {
233 .make_group = &target_core_register_fabric,
234 .drop_item = &target_core_deregister_fabric,
235};
236
237/*
238 * All item attributes appearing in /sys/kernel/target/ appear here.
239 */
240static struct configfs_attribute *target_core_fabric_item_attrs[] = {
241 &target_core_item_attr_version,
242 NULL,
243};
244
245/*
246 * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/
247 */
248static struct config_item_type target_core_fabrics_item = {
c66ac9db
NB		 249 .ct_group_ops = &target_core_fabric_group_ops,
250 .ct_attrs = target_core_fabric_item_attrs,
251 .ct_owner = THIS_MODULE,
252};
253
254static struct configfs_subsystem target_core_fabrics = {
255 .su_group = {
256 .cg_item = {
257 .ci_namebuf = "target",
258 .ci_type = &target_core_fabrics_item,
259 },
260 },
261};
262
d588cf8f
CH		 263int target_depend_item(struct config_item *item)
264{
265 return configfs_depend_item(&target_core_fabrics, item);
266}
267EXPORT_SYMBOL(target_depend_item);
268
269void target_undepend_item(struct config_item *item)
270{
9a9e3415 271 return configfs_undepend_item(item);
d588cf8f
CH		 272}
273EXPORT_SYMBOL(target_undepend_item);
c66ac9db
NB		 274
275/*##############################################################################
276// Start functions called by external Target Fabrics Modules
277//############################################################################*/
278
9ac8928e 279static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo)
c66ac9db 280{
9ac8928e
CH		 281 if (!tfo->name) {
282 pr_err("Missing tfo->name\n");
283 return -EINVAL;
c66ac9db 284 }
9ac8928e 285 if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) {
6708bb27 286 pr_err("Passed name: %s exceeds TARGET_FABRIC"
9ac8928e
CH		 287 "_NAME_SIZE\n", tfo->name);
288 return -EINVAL;
c66ac9db 289 }
6708bb27
AG		 290 if (!tfo->get_fabric_name) {
291 pr_err("Missing tfo->get_fabric_name()\n");
c66ac9db
NB		 292 return -EINVAL;
293 }
6708bb27
AG		 294 if (!tfo->tpg_get_wwn) {
295 pr_err("Missing tfo->tpg_get_wwn()\n");
c66ac9db
NB		 296 return -EINVAL;
297 }
6708bb27
AG		 298 if (!tfo->tpg_get_tag) {
299 pr_err("Missing tfo->tpg_get_tag()\n");
c66ac9db
NB		 300 return -EINVAL;
301 }
6708bb27
AG		 302 if (!tfo->tpg_check_demo_mode) {
303 pr_err("Missing tfo->tpg_check_demo_mode()\n");
c66ac9db
NB		 304 return -EINVAL;
305 }
6708bb27
AG		 306 if (!tfo->tpg_check_demo_mode_cache) {
307 pr_err("Missing tfo->tpg_check_demo_mode_cache()\n");
c66ac9db
NB		 308 return -EINVAL;
309 }
6708bb27
AG		 310 if (!tfo->tpg_check_demo_mode_write_protect) {
311 pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n");
c66ac9db
NB		 312 return -EINVAL;
313 }
6708bb27
AG		 314 if (!tfo->tpg_check_prod_mode_write_protect) {
315 pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n");
c66ac9db
NB		 316 return -EINVAL;
317 }
6708bb27
AG		 318 if (!tfo->tpg_get_inst_index) {
319 pr_err("Missing tfo->tpg_get_inst_index()\n");
c66ac9db
NB		 320 return -EINVAL;
321 }
35462975 322 if (!tfo->release_cmd) {
6708bb27 323 pr_err("Missing tfo->release_cmd()\n");
c66ac9db
NB		 324 return -EINVAL;
325 }
6708bb27
AG		 326 if (!tfo->shutdown_session) {
327 pr_err("Missing tfo->shutdown_session()\n");
c66ac9db
NB		 328 return -EINVAL;
329 }
6708bb27
AG		 330 if (!tfo->close_session) {
331 pr_err("Missing tfo->close_session()\n");
c66ac9db
NB		 332 return -EINVAL;
333 }
6708bb27
AG		 334 if (!tfo->sess_get_index) {
335 pr_err("Missing tfo->sess_get_index()\n");
c66ac9db
NB		 336 return -EINVAL;
337 }
6708bb27
AG		 338 if (!tfo->write_pending) {
339 pr_err("Missing tfo->write_pending()\n");
c66ac9db
NB		 340 return -EINVAL;
341 }
6708bb27
AG		 342 if (!tfo->write_pending_status) {
343 pr_err("Missing tfo->write_pending_status()\n");
c66ac9db
NB		 344 return -EINVAL;
345 }
6708bb27
AG		 346 if (!tfo->set_default_node_attributes) {
347 pr_err("Missing tfo->set_default_node_attributes()\n");
c66ac9db
NB		 348 return -EINVAL;
349 }
6708bb27
AG		 350 if (!tfo->get_cmd_state) {
351 pr_err("Missing tfo->get_cmd_state()\n");
c66ac9db
NB		 352 return -EINVAL;
353 }
6708bb27
AG		 354 if (!tfo->queue_data_in) {
355 pr_err("Missing tfo->queue_data_in()\n");
c66ac9db
NB		 356 return -EINVAL;
357 }
6708bb27
AG		 358 if (!tfo->queue_status) {
359 pr_err("Missing tfo->queue_status()\n");
c66ac9db
NB		 360 return -EINVAL;
361 }
6708bb27
AG		 362 if (!tfo->queue_tm_rsp) {
363 pr_err("Missing tfo->queue_tm_rsp()\n");
c66ac9db
NB		 364 return -EINVAL;
365 }
131e6abc
NB		 366 if (!tfo->aborted_task) {
367 pr_err("Missing tfo->aborted_task()\n");
368 return -EINVAL;
369 }
c66ac9db
NB		 370 /*
371 * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
372 * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in
373 * target_core_fabric_configfs.c WWN+TPG group context code.
374 */
6708bb27
AG		 375 if (!tfo->fabric_make_wwn) {
376 pr_err("Missing tfo->fabric_make_wwn()\n");
c66ac9db
NB		 377 return -EINVAL;
378 }
6708bb27
AG		 379 if (!tfo->fabric_drop_wwn) {
380 pr_err("Missing tfo->fabric_drop_wwn()\n");
c66ac9db
NB		 381 return -EINVAL;
382 }
6708bb27
AG		 383 if (!tfo->fabric_make_tpg) {
384 pr_err("Missing tfo->fabric_make_tpg()\n");
c66ac9db
NB		 385 return -EINVAL;
386 }
6708bb27
AG		 387 if (!tfo->fabric_drop_tpg) {
388 pr_err("Missing tfo->fabric_drop_tpg()\n");
c66ac9db
NB		 389 return -EINVAL;
390 }
391
392 return 0;
393}
394
9ac8928e 395int target_register_template(const struct target_core_fabric_ops *fo)
c66ac9db 396{
9ac8928e 397 struct target_fabric_configfs *tf;
c66ac9db
NB		 398 int ret;
399
9ac8928e
CH		 400 ret = target_fabric_tf_ops_check(fo);
401 if (ret)
402 return ret;
403
404 tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL);
6708bb27 405 if (!tf) {
9ac8928e
CH		 406 pr_err("%s: could not allocate memory!\n", __func__);
407 return -ENOMEM;
c66ac9db 408 }
c66ac9db 409
9ac8928e
CH		 410 INIT_LIST_HEAD(&tf->tf_list);
411 atomic_set(&tf->tf_access_cnt, 0);
ef0caf8d 412 tf->tf_ops = fo;
9ac8928e
CH		 413 target_fabric_setup_cits(tf);
414
415 mutex_lock(&g_tf_lock);
416 list_add_tail(&tf->tf_list, &g_tf_list);
417 mutex_unlock(&g_tf_lock);
418
c66ac9db
NB		 419 return 0;
420}
9ac8928e 421EXPORT_SYMBOL(target_register_template);
c66ac9db 422
9ac8928e 423void target_unregister_template(const struct target_core_fabric_ops *fo)
c66ac9db 424{
9ac8928e 425 struct target_fabric_configfs *t;
c66ac9db 426
c66ac9db 427 mutex_lock(&g_tf_lock);
9ac8928e 428 list_for_each_entry(t, &g_tf_list, tf_list) {
0dc2e8d1 429 if (!strcmp(t->tf_ops->name, fo->name)) {
9ac8928e
CH		 430 BUG_ON(atomic_read(&t->tf_access_cnt));
431 list_del(&t->tf_list);
94509182
NB		 432 mutex_unlock(&g_tf_lock);
433 /*
434 * Wait for any outstanding fabric se_deve_entry->rcu_head
435 * callbacks to complete post kfree_rcu(), before allowing
436 * fabric driver unload of TFO->module to proceed.
437 */
438 rcu_barrier();
9ac8928e 439 kfree(t);
94509182 440 return;
9ac8928e 441 }
c66ac9db 442 }
c66ac9db 443 mutex_unlock(&g_tf_lock);
c66ac9db 444}
9ac8928e 445EXPORT_SYMBOL(target_unregister_template);
c66ac9db
NB		 446
447/*##############################################################################
448// Stop functions called by external Target Fabrics Modules
449//############################################################################*/
450
2eafd729
CH		 451static inline struct se_dev_attrib *to_attrib(struct config_item *item)
452{
453 return container_of(to_config_group(item), struct se_dev_attrib,
454 da_group);
455}
456
f79a897e 457/* Start functions for struct config_item_type tb_dev_attrib_cit */
2eafd729
CH		 458#define DEF_CONFIGFS_ATTRIB_SHOW(_name) \
459static ssize_t _name##_show(struct config_item *item, char *page) \
5873c4d1 460{ \
2eafd729
CH		 461 return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \
462}
463
464DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias);
465DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo);
466DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write);
467DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read);
468DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache);
469DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl);
470DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas);
471DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu);
472DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws);
473DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw);
474DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc);
475DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type);
476DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type);
477DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_format);
478DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids);
479DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot);
480DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord);
481DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl);
482DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size);
483DEF_CONFIGFS_ATTRIB_SHOW(block_size);
484DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors);
485DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors);
486DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth);
487DEF_CONFIGFS_ATTRIB_SHOW(queue_depth);
488DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count);
489DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count);
490DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity);
491DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment);
e6f41633 492DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data);
2eafd729
CH		 493DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len);
494
495#define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \
496static ssize_t _name##_store(struct config_item *item, const char *page,\
3effdb90 497 size_t count) \
5873c4d1 498{ \
2eafd729 499 struct se_dev_attrib *da = to_attrib(item); \
3effdb90 500 u32 val; \
5873c4d1
CH		 501 int ret; \
502 \
3effdb90
CH		 503 ret = kstrtou32(page, 0, &val); \
504 if (ret < 0) \
505 return ret; \
506 da->_name = val; \
507 return count; \
508}
509
2eafd729
CH		 510DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count);
511DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count);
512DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity);
513DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment);
514DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len);
3effdb90 515
2eafd729
CH		 516#define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \
517static ssize_t _name##_store(struct config_item *item, const char *page, \
3effdb90
CH		 518 size_t count) \
519{ \
2eafd729 520 struct se_dev_attrib *da = to_attrib(item); \
3effdb90
CH		 521 bool flag; \
522 int ret; \
5873c4d1 523 \
3effdb90
CH		 524 ret = strtobool(page, &flag); \
525 if (ret < 0) \
526 return ret; \
527 da->_name = flag; \
528 return count; \
529}
530
2eafd729
CH		 531DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write);
532DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw);
533DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc);
534DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids);
535DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot);
3effdb90 536
2eafd729
CH		 537#define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \
538static ssize_t _name##_store(struct config_item *item, const char *page,\
3effdb90
CH		 539 size_t count) \
540{ \
541 printk_once(KERN_WARNING \
234bdbc4
CVB		 542 "ignoring deprecated %s attribute\n", \
543 __stringify(_name)); \
3effdb90
CH		 544 return count; \
545}
546
2eafd729
CH		 547DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo);
548DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read);
3effdb90
CH		 549
550static void dev_set_t10_wwn_model_alias(struct se_device *dev)
551{
552 const char *configname;
553
554 configname = config_item_name(&dev->dev_group.cg_item);
555 if (strlen(configname) >= 16) {
556 pr_warn("dev[%p]: Backstore name '%s' is too long for "
557 "INQUIRY_MODEL, truncating to 16 bytes\n", dev,
558 configname);
559 }
560 snprintf(&dev->t10_wwn.model[0], 16, "%s", configname);
561}
562
2eafd729 563static ssize_t emulate_model_alias_store(struct config_item *item,
3effdb90
CH		 564 const char *page, size_t count)
565{
2eafd729 566 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 567 struct se_device *dev = da->da_dev;
568 bool flag;
569 int ret;
570
571 if (dev->export_count) {
572 pr_err("dev[%p]: Unable to change model alias"
573 " while export_count is %d\n",
574 dev, dev->export_count);
575 return -EINVAL;
576 }
577
578 ret = strtobool(page, &flag);
579 if (ret < 0)
580 return ret;
581
582 if (flag) {
583 dev_set_t10_wwn_model_alias(dev);
584 } else {
585 strncpy(&dev->t10_wwn.model[0],
586 dev->transport->inquiry_prod, 16);
587 }
588 da->emulate_model_alias = flag;
589 return count;
590}
591
2eafd729 592static ssize_t emulate_write_cache_store(struct config_item *item,
3effdb90
CH		 593 const char *page, size_t count)
594{
2eafd729 595 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 596 bool flag;
597 int ret;
598
599 ret = strtobool(page, &flag);
600 if (ret < 0)
601 return ret;
602
603 if (flag && da->da_dev->transport->get_write_cache) {
604 pr_err("emulate_write_cache not supported for this device\n");
605 return -EINVAL;
606 }
607
608 da->emulate_write_cache = flag;
609 pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n",
610 da->da_dev, flag);
611 return count;
612}
613
2eafd729 614static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item,
3effdb90
CH		 615 const char *page, size_t count)
616{
2eafd729 617 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 618 u32 val;
619 int ret;
620
621 ret = kstrtou32(page, 0, &val);
622 if (ret < 0)
623 return ret;
624
625 if (val != 0 && val != 1 && val != 2) {
626 pr_err("Illegal value %d\n", val);
627 return -EINVAL;
628 }
629
630 if (da->da_dev->export_count) {
631 pr_err("dev[%p]: Unable to change SE Device"
632 " UA_INTRLCK_CTRL while export_count is %d\n",
633 da->da_dev, da->da_dev->export_count);
634 return -EINVAL;
635 }
636 da->emulate_ua_intlck_ctrl = val;
637 pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n",
638 da->da_dev, val);
639 return count;
640}
641
2eafd729 642static ssize_t emulate_tas_store(struct config_item *item,
3effdb90
CH		 643 const char *page, size_t count)
644{
2eafd729 645 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 646 bool flag;
647 int ret;
648
649 ret = strtobool(page, &flag);
650 if (ret < 0)
651 return ret;
652
653 if (da->da_dev->export_count) {
654 pr_err("dev[%p]: Unable to change SE Device TAS while"
655 " export_count is %d\n",
656 da->da_dev, da->da_dev->export_count);
657 return -EINVAL;
658 }
659 da->emulate_tas = flag;
660 pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n",
661 da->da_dev, flag ? "Enabled" : "Disabled");
662
663 return count;
664}
665
2eafd729 666static ssize_t emulate_tpu_store(struct config_item *item,
3effdb90
CH		 667 const char *page, size_t count)
668{
2eafd729 669 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 670 bool flag;
671 int ret;
672
673 ret = strtobool(page, &flag);
674 if (ret < 0)
675 return ret;
676
677 /*
678 * We expect this value to be non-zero when generic Block Layer
679 * Discard supported is detected iblock_create_virtdevice().
680 */
681 if (flag && !da->max_unmap_block_desc_count) {
682 pr_err("Generic Block Discard not supported\n");
683 return -ENOSYS;
684 }
685
686 da->emulate_tpu = flag;
687 pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n",
688 da->da_dev, flag);
689 return count;
690}
691
2eafd729 692static ssize_t emulate_tpws_store(struct config_item *item,
3effdb90
CH		 693 const char *page, size_t count)
694{
2eafd729 695 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 696 bool flag;
697 int ret;
698
699 ret = strtobool(page, &flag);
700 if (ret < 0)
701 return ret;
702
703 /*
704 * We expect this value to be non-zero when generic Block Layer
705 * Discard supported is detected iblock_create_virtdevice().
706 */
707 if (flag && !da->max_unmap_block_desc_count) {
708 pr_err("Generic Block Discard not supported\n");
709 return -ENOSYS;
710 }
711
712 da->emulate_tpws = flag;
713 pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n",
714 da->da_dev, flag);
715 return count;
716}
717
2eafd729 718static ssize_t pi_prot_type_store(struct config_item *item,
3effdb90
CH		 719 const char *page, size_t count)
720{
2eafd729 721 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 722 int old_prot = da->pi_prot_type, ret;
723 struct se_device *dev = da->da_dev;
724 u32 flag;
725
726 ret = kstrtou32(page, 0, &flag);
727 if (ret < 0)
728 return ret;
729
730 if (flag != 0 && flag != 1 && flag != 2 && flag != 3) {
731 pr_err("Illegal value %d for pi_prot_type\n", flag);
732 return -EINVAL;
733 }
734 if (flag == 2) {
735 pr_err("DIF TYPE2 protection currently not supported\n");
736 return -ENOSYS;
737 }
738 if (da->hw_pi_prot_type) {
739 pr_warn("DIF protection enabled on underlying hardware,"
740 " ignoring\n");
741 return count;
742 }
743 if (!dev->transport->init_prot || !dev->transport->free_prot) {
744 /* 0 is only allowed value for non-supporting backends */
745 if (flag == 0)
bc1a7d6a 746 return count;
3effdb90
CH		 747
748 pr_err("DIF protection not supported by backend: %s\n",
749 dev->transport->name);
750 return -ENOSYS;
751 }
752 if (!(dev->dev_flags & DF_CONFIGURED)) {
753 pr_err("DIF protection requires device to be configured\n");
754 return -ENODEV;
755 }
756 if (dev->export_count) {
757 pr_err("dev[%p]: Unable to change SE Device PROT type while"
758 " export_count is %d\n", dev, dev->export_count);
759 return -EINVAL;
760 }
761
762 da->pi_prot_type = flag;
763
764 if (flag && !old_prot) {
765 ret = dev->transport->init_prot(dev);
766 if (ret) {
767 da->pi_prot_type = old_prot;
768 return ret;
769 }
770
771 } else if (!flag && old_prot) {
772 dev->transport->free_prot(dev);
773 }
774
775 pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag);
776 return count;
777}
778
2eafd729 779static ssize_t pi_prot_format_store(struct config_item *item,
3effdb90
CH		 780 const char *page, size_t count)
781{
2eafd729 782 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 783 struct se_device *dev = da->da_dev;
784 bool flag;
785 int ret;
786
787 ret = strtobool(page, &flag);
788 if (ret < 0)
789 return ret;
790
791 if (!flag)
792 return count;
793
794 if (!dev->transport->format_prot) {
795 pr_err("DIF protection format not supported by backend %s\n",
796 dev->transport->name);
797 return -ENOSYS;
798 }
799 if (!(dev->dev_flags & DF_CONFIGURED)) {
800 pr_err("DIF protection format requires device to be configured\n");
801 return -ENODEV;
802 }
803 if (dev->export_count) {
804 pr_err("dev[%p]: Unable to format SE Device PROT type while"
805 " export_count is %d\n", dev, dev->export_count);
806 return -EINVAL;
807 }
808
809 ret = dev->transport->format_prot(dev);
810 if (ret)
811 return ret;
812
813 pr_debug("dev[%p]: SE Device Protection Format complete\n", dev);
814 return count;
815}
816
2eafd729 817static ssize_t force_pr_aptpl_store(struct config_item *item,
3effdb90
CH		 818 const char *page, size_t count)
819{
2eafd729 820 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 821 bool flag;
822 int ret;
823
824 ret = strtobool(page, &flag);
825 if (ret < 0)
826 return ret;
827 if (da->da_dev->export_count) {
828 pr_err("dev[%p]: Unable to set force_pr_aptpl while"
829 " export_count is %d\n",
830 da->da_dev, da->da_dev->export_count);
831 return -EINVAL;
832 }
833
834 da->force_pr_aptpl = flag;
835 pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag);
836 return count;
837}
838
2eafd729 839static ssize_t emulate_rest_reord_store(struct config_item *item,
3effdb90
CH		 840 const char *page, size_t count)
841{
2eafd729 842 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 843 bool flag;
844 int ret;
845
846 ret = strtobool(page, &flag);
847 if (ret < 0)
848 return ret;
849
850 if (flag != 0) {
851 printk(KERN_ERR "dev[%p]: SE Device emulation of restricted"
852 " reordering not implemented\n", da->da_dev);
853 return -ENOSYS;
854 }
855 da->emulate_rest_reord = flag;
856 pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n",
857 da->da_dev, flag);
858 return count;
859}
860
e6f41633
JP		 861static ssize_t unmap_zeroes_data_store(struct config_item *item,
862 const char *page, size_t count)
863{
864 struct se_dev_attrib *da = to_attrib(item);
865 bool flag;
866 int ret;
867
868 ret = strtobool(page, &flag);
869 if (ret < 0)
870 return ret;
871
872 if (da->da_dev->export_count) {
873 pr_err("dev[%p]: Unable to change SE Device"
874 " unmap_zeroes_data while export_count is %d\n",
875 da->da_dev, da->da_dev->export_count);
876 return -EINVAL;
877 }
878 /*
879 * We expect this value to be non-zero when generic Block Layer
880 * Discard supported is detected iblock_configure_device().
881 */
882 if (flag && !da->max_unmap_block_desc_count) {
883 pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set"
884 " because max_unmap_block_desc_count is zero\n",
885 da->da_dev);
9b3118ce 886 return -ENOSYS;
e6f41633
JP		 887 }
888 da->unmap_zeroes_data = flag;
889 pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n",
890 da->da_dev, flag);
2e498f25 891 return count;
e6f41633
JP		 892}
893
3effdb90
CH		 894/*
895 * Note, this can only be called on unexported SE Device Object.
896 */
2eafd729 897static ssize_t queue_depth_store(struct config_item *item,
3effdb90
CH		 898 const char *page, size_t count)
899{
2eafd729 900 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 901 struct se_device *dev = da->da_dev;
902 u32 val;
903 int ret;
904
905 ret = kstrtou32(page, 0, &val);
906 if (ret < 0)
907 return ret;
908
909 if (dev->export_count) {
910 pr_err("dev[%p]: Unable to change SE Device TCQ while"
911 " export_count is %d\n",
912 dev, dev->export_count);
913 return -EINVAL;
914 }
915 if (!val) {
916 pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev);
917 return -EINVAL;
918 }
919
920 if (val > dev->dev_attrib.queue_depth) {
921 if (val > dev->dev_attrib.hw_queue_depth) {
922 pr_err("dev[%p]: Passed queue_depth:"
923 " %u exceeds TCM/SE_Device MAX"
924 " TCQ: %u\n", dev, val,
925 dev->dev_attrib.hw_queue_depth);
926 return -EINVAL;
927 }
928 }
929 da->queue_depth = dev->queue_depth = val;
930 pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val);
931 return count;
932}
933
2eafd729 934static ssize_t optimal_sectors_store(struct config_item *item,
3effdb90
CH		 935 const char *page, size_t count)
936{
2eafd729 937 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 938 u32 val;
939 int ret;
940
941 ret = kstrtou32(page, 0, &val);
942 if (ret < 0)
943 return ret;
944
945 if (da->da_dev->export_count) {
946 pr_err("dev[%p]: Unable to change SE Device"
947 " optimal_sectors while export_count is %d\n",
948 da->da_dev, da->da_dev->export_count);
949 return -EINVAL;
950 }
951 if (val > da->hw_max_sectors) {
952 pr_err("dev[%p]: Passed optimal_sectors %u cannot be"
953 " greater than hw_max_sectors: %u\n",
954 da->da_dev, val, da->hw_max_sectors);
955 return -EINVAL;
956 }
957
958 da->optimal_sectors = val;
959 pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n",
960 da->da_dev, val);
961 return count;
5873c4d1
CH		 962}
963
2eafd729 964static ssize_t block_size_store(struct config_item *item,
3effdb90
CH		 965 const char *page, size_t count)
966{
2eafd729 967 struct se_dev_attrib *da = to_attrib(item);
3effdb90
CH		 968 u32 val;
969 int ret;
970
971 ret = kstrtou32(page, 0, &val);
972 if (ret < 0)
973 return ret;
5873c4d1 974
3effdb90
CH		 975 if (da->da_dev->export_count) {
976 pr_err("dev[%p]: Unable to change SE Device block_size"
977 " while export_count is %d\n",
978 da->da_dev, da->da_dev->export_count);
979 return -EINVAL;
980 }
981
982 if (val != 512 && val != 1024 && val != 2048 && val != 4096) {
983 pr_err("dev[%p]: Illegal value for block_device: %u"
984 " for SE device, must be 512, 1024, 2048 or 4096\n",
985 da->da_dev, val);
986 return -EINVAL;
987 }
988
989 da->block_size = val;
990 if (da->max_bytes_per_io)
991 da->hw_max_sectors = da->max_bytes_per_io / val;
992
993 pr_debug("dev[%p]: SE Device block_size changed to %u\n",
994 da->da_dev, val);
995 return count;
996}
5873c4d1 997
2eafd729
CH		 998CONFIGFS_ATTR(, emulate_model_alias);
999CONFIGFS_ATTR(, emulate_dpo);
1000CONFIGFS_ATTR(, emulate_fua_write);
1001CONFIGFS_ATTR(, emulate_fua_read);
1002CONFIGFS_ATTR(, emulate_write_cache);
1003CONFIGFS_ATTR(, emulate_ua_intlck_ctrl);
1004CONFIGFS_ATTR(, emulate_tas);
1005CONFIGFS_ATTR(, emulate_tpu);
1006CONFIGFS_ATTR(, emulate_tpws);
1007CONFIGFS_ATTR(, emulate_caw);
1008CONFIGFS_ATTR(, emulate_3pc);
1009CONFIGFS_ATTR(, pi_prot_type);
1010CONFIGFS_ATTR_RO(, hw_pi_prot_type);
1011CONFIGFS_ATTR(, pi_prot_format);
1012CONFIGFS_ATTR(, enforce_pr_isids);
1013CONFIGFS_ATTR(, is_nonrot);
1014CONFIGFS_ATTR(, emulate_rest_reord);
1015CONFIGFS_ATTR(, force_pr_aptpl);
1016CONFIGFS_ATTR_RO(, hw_block_size);
1017CONFIGFS_ATTR(, block_size);
1018CONFIGFS_ATTR_RO(, hw_max_sectors);
1019CONFIGFS_ATTR(, optimal_sectors);
1020CONFIGFS_ATTR_RO(, hw_queue_depth);
1021CONFIGFS_ATTR(, queue_depth);
1022CONFIGFS_ATTR(, max_unmap_lba_count);
1023CONFIGFS_ATTR(, max_unmap_block_desc_count);
1024CONFIGFS_ATTR(, unmap_granularity);
1025CONFIGFS_ATTR(, unmap_granularity_alignment);
e6f41633 1026CONFIGFS_ATTR(, unmap_zeroes_data);
2eafd729 1027CONFIGFS_ATTR(, max_write_same_len);
c66ac9db 1028
5873c4d1
CH		 1029/*
1030 * dev_attrib attributes for devices using the target core SBC/SPC
1031 * interpreter. Any backend using spc_parse_cdb should be using
1032 * these.
1033 */
1034struct configfs_attribute *sbc_attrib_attrs[] = {
2eafd729
CH		 1035 &attr_emulate_model_alias,
1036 &attr_emulate_dpo,
1037 &attr_emulate_fua_write,
1038 &attr_emulate_fua_read,
1039 &attr_emulate_write_cache,
1040 &attr_emulate_ua_intlck_ctrl,
1041 &attr_emulate_tas,
1042 &attr_emulate_tpu,
1043 &attr_emulate_tpws,
1044 &attr_emulate_caw,
1045 &attr_emulate_3pc,
1046 &attr_pi_prot_type,
1047 &attr_hw_pi_prot_type,
1048 &attr_pi_prot_format,
1049 &attr_enforce_pr_isids,
1050 &attr_is_nonrot,
1051 &attr_emulate_rest_reord,
1052 &attr_force_pr_aptpl,
1053 &attr_hw_block_size,
1054 &attr_block_size,
1055 &attr_hw_max_sectors,
1056 &attr_optimal_sectors,
1057 &attr_hw_queue_depth,
1058 &attr_queue_depth,
1059 &attr_max_unmap_lba_count,
1060 &attr_max_unmap_block_desc_count,
1061 &attr_unmap_granularity,
1062 &attr_unmap_granularity_alignment,
e6f41633 1063 &attr_unmap_zeroes_data,
2eafd729 1064 &attr_max_write_same_len,
5873c4d1
CH		 1065 NULL,
1066};
1067EXPORT_SYMBOL(sbc_attrib_attrs);
1068
5873c4d1
CH		 1069/*
1070 * Minimal dev_attrib attributes for devices passing through CDBs.
1071 * In this case we only provide a few read-only attributes for
1072 * backwards compatibility.
1073 */
1074struct configfs_attribute *passthrough_attrib_attrs[] = {
2eafd729
CH		 1075 &attr_hw_pi_prot_type,
1076 &attr_hw_block_size,
1077 &attr_hw_max_sectors,
1078 &attr_hw_queue_depth,
5873c4d1
CH		 1079 NULL,
1080};
1081EXPORT_SYMBOL(passthrough_attrib_attrs);
1082
2eafd729 1083TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL);
c66ac9db 1084
f79a897e 1085/* End functions for struct config_item_type tb_dev_attrib_cit */
c66ac9db 1086
f8d389c6 1087/* Start functions for struct config_item_type tb_dev_wwn_cit */
c66ac9db 1088
2eafd729
CH		 1089static struct t10_wwn *to_t10_wwn(struct config_item *item)
1090{
1091 return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group);
1092}
c66ac9db
NB		 1093
1094/*
1095 * VPD page 0x80 Unit serial
1096 */
2eafd729
CH		 1097static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item,
1098 char *page)
c66ac9db 1099{
c66ac9db 1100 return sprintf(page, "T10 VPD Unit Serial Number: %s\n",
2eafd729 1101 &to_t10_wwn(item)->unit_serial[0]);
c66ac9db
NB		 1102}
1103
2eafd729
CH		 1104static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item,
1105 const char *page, size_t count)
c66ac9db 1106{
2eafd729 1107 struct t10_wwn *t10_wwn = to_t10_wwn(item);
0fd97ccf 1108 struct se_device *dev = t10_wwn->t10_dev;
c66ac9db
NB		 1109 unsigned char buf[INQUIRY_VPD_SERIAL_LEN];
1110
1111 /*
1112 * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial
1113 * from the struct scsi_device level firmware, do not allow
1114 * VPD Unit Serial to be emulated.
1115 *
1116 * Note this struct scsi_device could also be emulating VPD
1117 * information from its drivers/scsi LLD. But for now we assume
1118 * it is doing 'the right thing' wrt a world wide unique
1119 * VPD Unit Serial Number that OS dependent multipath can depend on.
1120 */
0fd97ccf 1121 if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) {
6708bb27 1122 pr_err("Underlying SCSI device firmware provided VPD"
c66ac9db
NB		 1123 " Unit Serial, ignoring request\n");
1124 return -EOPNOTSUPP;
1125 }
1126
60d645a4 1127 if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) {
6708bb27 1128 pr_err("Emulated VPD Unit Serial exceeds"
c66ac9db
NB		 1129 " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN);
1130 return -EOVERFLOW;
1131 }
1132 /*
1133 * Check to see if any active $FABRIC_MOD exports exist. If they
1134 * do exist, fail here as changing this information on the fly
1135 * (underneath the initiator side OS dependent multipath code)
1136 * could cause negative effects.
1137 */
0fd97ccf
CH		 1138 if (dev->export_count) {
1139 pr_err("Unable to set VPD Unit Serial while"
1140 " active %d $FABRIC_MOD exports exist\n",
1141 dev->export_count);
1142 return -EINVAL;
c66ac9db 1143 }
0fd97ccf 1144
c66ac9db
NB		 1145 /*
1146 * This currently assumes ASCII encoding for emulated VPD Unit Serial.
1147 *
1148 * Also, strip any newline added from the userspace
1149 * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial
1150 */
1151 memset(buf, 0, INQUIRY_VPD_SERIAL_LEN);
1152 snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page);
0fd97ccf 1153 snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN,
c66ac9db 1154 "%s", strstrip(buf));
0fd97ccf 1155 dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL;
c66ac9db 1156
6708bb27 1157 pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:"
0fd97ccf 1158 " %s\n", dev->t10_wwn.unit_serial);
c66ac9db
NB		 1159
1160 return count;
1161}
1162
c66ac9db
NB		 1163/*
1164 * VPD page 0x83 Protocol Identifier
1165 */
2eafd729
CH		 1166static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item,
1167 char *page)
c66ac9db 1168{
2eafd729 1169 struct t10_wwn *t10_wwn = to_t10_wwn(item);
c66ac9db
NB		 1170 struct t10_vpd *vpd;
1171 unsigned char buf[VPD_TMP_BUF_SIZE];
1172 ssize_t len = 0;
1173
c66ac9db
NB		 1174 memset(buf, 0, VPD_TMP_BUF_SIZE);
1175
1176 spin_lock(&t10_wwn->t10_vpd_lock);
1177 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) {
6708bb27 1178 if (!vpd->protocol_identifier_set)
c66ac9db
NB		 1179 continue;
1180
1181 transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE);
1182
6708bb27 1183 if (len + strlen(buf) >= PAGE_SIZE)
c66ac9db
NB		 1184 break;
1185
1186 len += sprintf(page+len, "%s", buf);
1187 }
1188 spin_unlock(&t10_wwn->t10_vpd_lock);
1189
1190 return len;
1191}
1192
c66ac9db
NB		 1193/*
1194 * Generic wrapper for dumping VPD identifiers by association.
1195 */
1196#define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \
2eafd729
CH		 1197static ssize_t target_wwn_##_name##_show(struct config_item *item, \
1198 char *page) \
c66ac9db 1199{ \
2eafd729
CH		 1200 struct t10_wwn *t10_wwn = to_t10_wwn(item); \
1201 struct t10_vpd *vpd; \
c66ac9db
NB		 1202 unsigned char buf[VPD_TMP_BUF_SIZE]; \
1203 ssize_t len = 0; \
1204 \
c66ac9db
NB		 1205 spin_lock(&t10_wwn->t10_vpd_lock); \
1206 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \
1207 if (vpd->association != _assoc) \
1208 continue; \
1209 \
1210 memset(buf, 0, VPD_TMP_BUF_SIZE); \
1211 transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \
6708bb27 1212 if (len + strlen(buf) >= PAGE_SIZE) \
c66ac9db
NB		 1213 break; \
1214 len += sprintf(page+len, "%s", buf); \
1215 \
1216 memset(buf, 0, VPD_TMP_BUF_SIZE); \
1217 transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \
6708bb27 1218 if (len + strlen(buf) >= PAGE_SIZE) \
c66ac9db
NB		 1219 break; \
1220 len += sprintf(page+len, "%s", buf); \
1221 \
1222 memset(buf, 0, VPD_TMP_BUF_SIZE); \
1223 transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \
6708bb27 1224 if (len + strlen(buf) >= PAGE_SIZE) \
c66ac9db
NB		 1225 break; \
1226 len += sprintf(page+len, "%s", buf); \
1227 } \
1228 spin_unlock(&t10_wwn->t10_vpd_lock); \
1229 \
1230 return len; \
1231}
1232
2eafd729 1233/* VPD page 0x83 Association: Logical Unit */
c66ac9db 1234DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00);
2eafd729 1235/* VPD page 0x83 Association: Target Port */
c66ac9db 1236DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10);
2eafd729 1237/* VPD page 0x83 Association: SCSI Target Device */
c66ac9db
NB		 1238DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20);
1239
2eafd729
CH		 1240CONFIGFS_ATTR(target_wwn_, vpd_unit_serial);
1241CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier);
1242CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit);
1243CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port);
1244CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device);
c66ac9db
NB		 1245
1246static struct configfs_attribute *target_core_dev_wwn_attrs[] = {
2eafd729
CH		 1247 &target_wwn_attr_vpd_unit_serial,
1248 &target_wwn_attr_vpd_protocol_identifier,
1249 &target_wwn_attr_vpd_assoc_logical_unit,
1250 &target_wwn_attr_vpd_assoc_target_port,
1251 &target_wwn_attr_vpd_assoc_scsi_target_device,
c66ac9db
NB		 1252 NULL,
1253};
1254
2eafd729 1255TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs);
c66ac9db 1256
f8d389c6 1257/* End functions for struct config_item_type tb_dev_wwn_cit */
c66ac9db 1258
91e2e39b 1259/* Start functions for struct config_item_type tb_dev_pr_cit */
c66ac9db 1260
2eafd729
CH		 1261static struct se_device *pr_to_dev(struct config_item *item)
1262{
1263 return container_of(to_config_group(item), struct se_device,
1264 dev_pr_group);
1265}
c66ac9db 1266
d977f437
CH		 1267static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev,
1268 char *page)
c66ac9db
NB		 1269{
1270 struct se_node_acl *se_nacl;
1271 struct t10_pr_registration *pr_reg;
1272 char i_buf[PR_REG_ISID_ID_LEN];
c66ac9db
NB		 1273
1274 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1275
c66ac9db 1276 pr_reg = dev->dev_pr_res_holder;
d977f437
CH		 1277 if (!pr_reg)
1278 return sprintf(page, "No SPC-3 Reservation holder\n");
1279
c66ac9db 1280 se_nacl = pr_reg->pr_reg_nacl;
d2843c17 1281 core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
c66ac9db 1282
d977f437 1283 return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n",
e3d6f909 1284 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
d2843c17 1285 se_nacl->initiatorname, i_buf);
c66ac9db
NB		 1286}
1287
d977f437
CH		 1288static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev,
1289 char *page)
c66ac9db
NB		 1290{
1291 struct se_node_acl *se_nacl;
d977f437 1292 ssize_t len;
c66ac9db 1293
c66ac9db 1294 se_nacl = dev->dev_reserved_node_acl;
d977f437
CH		 1295 if (se_nacl) {
1296 len = sprintf(page,
1297 "SPC-2 Reservation: %s Initiator: %s\n",
1298 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
1299 se_nacl->initiatorname);
1300 } else {
1301 len = sprintf(page, "No SPC-2 Reservation holder\n");
c66ac9db 1302 }
d977f437 1303 return len;
c66ac9db
NB		 1304}
1305
2eafd729 1306static ssize_t target_pr_res_holder_show(struct config_item *item, char *page)
c66ac9db 1307{
2eafd729 1308 struct se_device *dev = pr_to_dev(item);
d977f437 1309 int ret;
c66ac9db 1310
a3541703 1311 if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
d977f437 1312 return sprintf(page, "Passthrough\n");
c66ac9db 1313
d977f437
CH		 1314 spin_lock(&dev->dev_reservation_lock);
1315 if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
1316 ret = target_core_dev_pr_show_spc2_res(dev, page);
1317 else
1318 ret = target_core_dev_pr_show_spc3_res(dev, page);
1319 spin_unlock(&dev->dev_reservation_lock);
1320 return ret;
c66ac9db
NB		 1321}
1322
2eafd729
CH		 1323static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item,
1324 char *page)
c66ac9db 1325{
2eafd729 1326 struct se_device *dev = pr_to_dev(item);
c66ac9db
NB		 1327 ssize_t len = 0;
1328
c66ac9db 1329 spin_lock(&dev->dev_reservation_lock);
d977f437 1330 if (!dev->dev_pr_res_holder) {
c66ac9db 1331 len = sprintf(page, "No SPC-3 Reservation holder\n");
d977f437 1332 } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) {
c66ac9db
NB		 1333 len = sprintf(page, "SPC-3 Reservation: All Target"
1334 " Ports registration\n");
d977f437 1335 } else {
c66ac9db
NB		 1336 len = sprintf(page, "SPC-3 Reservation: Single"
1337 " Target Port registration\n");
d977f437 1338 }
c66ac9db 1339
d977f437 1340 spin_unlock(&dev->dev_reservation_lock);
c66ac9db
NB		 1341 return len;
1342}
1343
2eafd729
CH		 1344static ssize_t target_pr_res_pr_generation_show(struct config_item *item,
1345 char *page)
c66ac9db 1346{
2eafd729 1347 return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation);
c66ac9db
NB		 1348}
1349
c66ac9db 1350
2eafd729
CH		 1351static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item,
1352 char *page)
c66ac9db 1353{
2eafd729 1354 struct se_device *dev = pr_to_dev(item);
c66ac9db 1355 struct se_node_acl *se_nacl;
c66ac9db
NB		 1356 struct se_portal_group *se_tpg;
1357 struct t10_pr_registration *pr_reg;
9ac8928e 1358 const struct target_core_fabric_ops *tfo;
c66ac9db
NB		 1359 ssize_t len = 0;
1360
c66ac9db
NB		 1361 spin_lock(&dev->dev_reservation_lock);
1362 pr_reg = dev->dev_pr_res_holder;
6708bb27 1363 if (!pr_reg) {
c66ac9db 1364 len = sprintf(page, "No SPC-3 Reservation holder\n");
d977f437 1365 goto out_unlock;
c66ac9db 1366 }
d977f437 1367
c66ac9db
NB		 1368 se_nacl = pr_reg->pr_reg_nacl;
1369 se_tpg = se_nacl->se_tpg;
e3d6f909 1370 tfo = se_tpg->se_tpg_tfo;
c66ac9db
NB		 1371
1372 len += sprintf(page+len, "SPC-3 Reservation: %s"
1373 " Target Node Endpoint: %s\n", tfo->get_fabric_name(),
1374 tfo->tpg_get_wwn(se_tpg));
1375 len += sprintf(page+len, "SPC-3 Reservation: Relative Port"
35d1efe8 1376 " Identifier Tag: %hu %s Portal Group Tag: %hu"
f2d30680 1377 " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi,
c66ac9db 1378 tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg),
79dc9c9e 1379 tfo->get_fabric_name(), pr_reg->pr_aptpl_target_lun);
c66ac9db 1380
d977f437
CH		 1381out_unlock:
1382 spin_unlock(&dev->dev_reservation_lock);
c66ac9db
NB		 1383 return len;
1384}
1385
c66ac9db 1386
2eafd729
CH		 1387static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item,
1388 char *page)
c66ac9db 1389{
2eafd729 1390 struct se_device *dev = pr_to_dev(item);
9ac8928e 1391 const struct target_core_fabric_ops *tfo;
c66ac9db
NB		 1392 struct t10_pr_registration *pr_reg;
1393 unsigned char buf[384];
1394 char i_buf[PR_REG_ISID_ID_LEN];
1395 ssize_t len = 0;
d2843c17 1396 int reg_count = 0;
c66ac9db 1397
c66ac9db
NB		 1398 len += sprintf(page+len, "SPC-3 PR Registrations:\n");
1399
0fd97ccf
CH		 1400 spin_lock(&dev->t10_pr.registration_lock);
1401 list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
c66ac9db
NB		 1402 pr_reg_list) {
1403
1404 memset(buf, 0, 384);
1405 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1406 tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
d2843c17 1407 core_pr_dump_initiator_port(pr_reg, i_buf,
c66ac9db
NB		 1408 PR_REG_ISID_ID_LEN);
1409 sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
1410 tfo->get_fabric_name(),
d2843c17 1411 pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key,
c66ac9db
NB		 1412 pr_reg->pr_res_generation);
1413
6708bb27 1414 if (len + strlen(buf) >= PAGE_SIZE)
c66ac9db
NB		 1415 break;
1416
1417 len += sprintf(page+len, "%s", buf);
1418 reg_count++;
1419 }
0fd97ccf 1420 spin_unlock(&dev->t10_pr.registration_lock);
c66ac9db 1421
6708bb27 1422 if (!reg_count)
c66ac9db
NB		 1423 len += sprintf(page+len, "None\n");
1424
1425 return len;
1426}
1427
2eafd729 1428static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page)
c66ac9db 1429{
2eafd729 1430 struct se_device *dev = pr_to_dev(item);
c66ac9db
NB		 1431 struct t10_pr_registration *pr_reg;
1432 ssize_t len = 0;
1433
c66ac9db
NB		 1434 spin_lock(&dev->dev_reservation_lock);
1435 pr_reg = dev->dev_pr_res_holder;
d977f437
CH		 1436 if (pr_reg) {
1437 len = sprintf(page, "SPC-3 Reservation Type: %s\n",
1438 core_scsi3_pr_dump_type(pr_reg->pr_res_type));
1439 } else {
c66ac9db 1440 len = sprintf(page, "No SPC-3 Reservation holder\n");
c66ac9db 1441 }
c66ac9db 1442
d977f437 1443 spin_unlock(&dev->dev_reservation_lock);
c66ac9db
NB		 1444 return len;
1445}
1446
2eafd729 1447static ssize_t target_pr_res_type_show(struct config_item *item, char *page)
c66ac9db 1448{
2eafd729
CH		 1449 struct se_device *dev = pr_to_dev(item);
1450
a3541703 1451 if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
d977f437
CH		 1452 return sprintf(page, "SPC_PASSTHROUGH\n");
1453 else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
1454 return sprintf(page, "SPC2_RESERVATIONS\n");
1455 else
1456 return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
c66ac9db
NB		 1457}
1458
2eafd729
CH		 1459static ssize_t target_pr_res_aptpl_active_show(struct config_item *item,
1460 char *page)
c66ac9db 1461{
2eafd729
CH		 1462 struct se_device *dev = pr_to_dev(item);
1463
a3541703 1464 if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
c66ac9db
NB		 1465 return 0;
1466
1467 return sprintf(page, "APTPL Bit Status: %s\n",
0fd97ccf 1468 (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled");
c66ac9db
NB		 1469}
1470
2eafd729
CH		 1471static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item,
1472 char *page)
c66ac9db 1473{
2eafd729
CH		 1474 struct se_device *dev = pr_to_dev(item);
1475
a3541703 1476 if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
c66ac9db
NB		 1477 return 0;
1478
1479 return sprintf(page, "Ready to process PR APTPL metadata..\n");
1480}
1481
1482enum {
1483 Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid,
1484 Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope,
1485 Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric,
1486 Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err
1487};
1488
1489static match_table_t tokens = {
1490 {Opt_initiator_fabric, "initiator_fabric=%s"},
1491 {Opt_initiator_node, "initiator_node=%s"},
1492 {Opt_initiator_sid, "initiator_sid=%s"},
1493 {Opt_sa_res_key, "sa_res_key=%s"},
1494 {Opt_res_holder, "res_holder=%d"},
1495 {Opt_res_type, "res_type=%d"},
1496 {Opt_res_scope, "res_scope=%d"},
1497 {Opt_res_all_tg_pt, "res_all_tg_pt=%d"},
f2d30680 1498 {Opt_mapped_lun, "mapped_lun=%lld"},
c66ac9db
NB		 1499 {Opt_target_fabric, "target_fabric=%s"},
1500 {Opt_target_node, "target_node=%s"},
1501 {Opt_tpgt, "tpgt=%d"},
1502 {Opt_port_rtpi, "port_rtpi=%d"},
f2d30680 1503 {Opt_target_lun, "target_lun=%lld"},
c66ac9db
NB		 1504 {Opt_err, NULL}
1505};
1506
2eafd729
CH		 1507static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item,
1508 const char *page, size_t count)
c66ac9db 1509{
2eafd729 1510 struct se_device *dev = pr_to_dev(item);
6d180253
JJ		 1511 unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
1512 unsigned char *t_fabric = NULL, *t_port = NULL;
8d213559 1513 char *orig, *ptr, *opts;
c66ac9db
NB		 1514 substring_t args[MAX_OPT_ARGS];
1515 unsigned long long tmp_ll;
1516 u64 sa_res_key = 0;
f2d30680 1517 u64 mapped_lun = 0, target_lun = 0;
c66ac9db 1518 int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token;
45fb94c2
BVA		 1519 u16 tpgt = 0;
1520 u8 type = 0;
c66ac9db 1521
a3541703 1522 if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)
9105bfc0 1523 return count;
d977f437 1524 if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
9105bfc0 1525 return count;
c66ac9db 1526
0fd97ccf 1527 if (dev->export_count) {
6708bb27 1528 pr_debug("Unable to process APTPL metadata while"
c66ac9db
NB		 1529 " active fabric exports exist\n");
1530 return -EINVAL;
1531 }
1532
1533 opts = kstrdup(page, GFP_KERNEL);
1534 if (!opts)
1535 return -ENOMEM;
1536
1537 orig = opts;
90c161b6 1538 while ((ptr = strsep(&opts, ",\n")) != NULL) {
c66ac9db
NB		 1539 if (!*ptr)
1540 continue;
1541
1542 token = match_token(ptr, tokens, args);
1543 switch (token) {
1544 case Opt_initiator_fabric:
8d213559 1545 i_fabric = match_strdup(args);
6d180253
JJ		 1546 if (!i_fabric) {
1547 ret = -ENOMEM;
1548 goto out;
1549 }
c66ac9db
NB		 1550 break;
1551 case Opt_initiator_node:
8d213559 1552 i_port = match_strdup(args);
6d180253
JJ		 1553 if (!i_port) {
1554 ret = -ENOMEM;
1555 goto out;
1556 }
60d645a4 1557 if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) {
6708bb27 1558 pr_err("APTPL metadata initiator_node="
c66ac9db
NB		 1559 " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n",
1560 PR_APTPL_MAX_IPORT_LEN);
1561 ret = -EINVAL;
1562 break;
1563 }
1564 break;
1565 case Opt_initiator_sid:
8d213559 1566 isid = match_strdup(args);
6d180253
JJ		 1567 if (!isid) {
1568 ret = -ENOMEM;
1569 goto out;
1570 }
60d645a4 1571 if (strlen(isid) >= PR_REG_ISID_LEN) {
6708bb27 1572 pr_err("APTPL metadata initiator_isid"
c66ac9db
NB		 1573 "= exceeds PR_REG_ISID_LEN: %d\n",
1574 PR_REG_ISID_LEN);
1575 ret = -EINVAL;
1576 break;
1577 }
1578 break;
1579 case Opt_sa_res_key:
8d213559 1580 ret = kstrtoull(args->from, 0, &tmp_ll);
c66ac9db 1581 if (ret < 0) {
8d213559 1582 pr_err("kstrtoull() failed for sa_res_key=\n");
c66ac9db
NB		 1583 goto out;
1584 }
1585 sa_res_key = (u64)tmp_ll;
1586 break;
1587 /*
1588 * PR APTPL Metadata for Reservation
1589 */
1590 case Opt_res_holder:
c2091026
DD		 1591 ret = match_int(args, &arg);
1592 if (ret)
1593 goto out;
c66ac9db
NB		 1594 res_holder = arg;
1595 break;
1596 case Opt_res_type:
c2091026
DD		 1597 ret = match_int(args, &arg);
1598 if (ret)
1599 goto out;
c66ac9db
NB		 1600 type = (u8)arg;
1601 break;
1602 case Opt_res_scope:
c2091026
DD		 1603 ret = match_int(args, &arg);
1604 if (ret)
1605 goto out;
c66ac9db
NB		 1606 break;
1607 case Opt_res_all_tg_pt:
c2091026
DD		 1608 ret = match_int(args, &arg);
1609 if (ret)
1610 goto out;
c66ac9db
NB		 1611 all_tg_pt = (int)arg;
1612 break;
1613 case Opt_mapped_lun:
c2091026
DD		 1614 ret = match_int(args, &arg);
1615 if (ret)
1616 goto out;
f2d30680 1617 mapped_lun = (u64)arg;
c66ac9db
NB		 1618 break;
1619 /*
1620 * PR APTPL Metadata for Target Port
1621 */
1622 case Opt_target_fabric:
8d213559 1623 t_fabric = match_strdup(args);
6d180253
JJ		 1624 if (!t_fabric) {
1625 ret = -ENOMEM;
1626 goto out;
1627 }
c66ac9db
NB		 1628 break;
1629 case Opt_target_node:
8d213559 1630 t_port = match_strdup(args);
6d180253
JJ		 1631 if (!t_port) {
1632 ret = -ENOMEM;
1633 goto out;
1634 }
60d645a4 1635 if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) {
6708bb27 1636 pr_err("APTPL metadata target_node="
c66ac9db
NB		 1637 " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n",
1638 PR_APTPL_MAX_TPORT_LEN);
1639 ret = -EINVAL;
1640 break;
1641 }
1642 break;
1643 case Opt_tpgt:
c2091026
DD		 1644 ret = match_int(args, &arg);
1645 if (ret)
1646 goto out;
c66ac9db
NB		 1647 tpgt = (u16)arg;
1648 break;
1649 case Opt_port_rtpi:
c2091026
DD		 1650 ret = match_int(args, &arg);
1651 if (ret)
1652 goto out;
c66ac9db
NB		 1653 break;
1654 case Opt_target_lun:
c2091026
DD		 1655 ret = match_int(args, &arg);
1656 if (ret)
1657 goto out;
f2d30680 1658 target_lun = (u64)arg;
c66ac9db
NB		 1659 break;
1660 default:
1661 break;
1662 }
1663 }
1664
6708bb27
AG		 1665 if (!i_port || !t_port || !sa_res_key) {
1666 pr_err("Illegal parameters for APTPL registration\n");
c66ac9db
NB		 1667 ret = -EINVAL;
1668 goto out;
1669 }
1670
1671 if (res_holder && !(type)) {
6708bb27 1672 pr_err("Illegal PR type: 0x%02x for reservation"
c66ac9db
NB		 1673 " holder\n", type);
1674 ret = -EINVAL;
1675 goto out;
1676 }
1677
0fd97ccf 1678 ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key,
c66ac9db
NB		 1679 i_port, isid, mapped_lun, t_port, tpgt, target_lun,
1680 res_holder, all_tg_pt, type);
1681out:
6d180253
JJ		 1682 kfree(i_fabric);
1683 kfree(i_port);
1684 kfree(isid);
1685 kfree(t_fabric);
1686 kfree(t_port);
c66ac9db
NB		 1687 kfree(orig);
1688 return (ret == 0) ? count : ret;
1689}
1690
c66ac9db 1691
2eafd729
CH		 1692CONFIGFS_ATTR_RO(target_pr_, res_holder);
1693CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts);
1694CONFIGFS_ATTR_RO(target_pr_, res_pr_generation);
1695CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port);
1696CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts);
1697CONFIGFS_ATTR_RO(target_pr_, res_pr_type);
1698CONFIGFS_ATTR_RO(target_pr_, res_type);
1699CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active);
1700CONFIGFS_ATTR(target_pr_, res_aptpl_metadata);
c66ac9db
NB		 1701
1702static struct configfs_attribute *target_core_dev_pr_attrs[] = {
2eafd729
CH		 1703 &target_pr_attr_res_holder,
1704 &target_pr_attr_res_pr_all_tgt_pts,
1705 &target_pr_attr_res_pr_generation,
1706 &target_pr_attr_res_pr_holder_tg_port,
1707 &target_pr_attr_res_pr_registered_i_pts,
1708 &target_pr_attr_res_pr_type,
1709 &target_pr_attr_res_type,
1710 &target_pr_attr_res_aptpl_active,
1711 &target_pr_attr_res_aptpl_metadata,
c66ac9db
NB		 1712 NULL,
1713};
1714
2eafd729 1715TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs);
c66ac9db 1716
91e2e39b 1717/* End functions for struct config_item_type tb_dev_pr_cit */
c66ac9db 1718
73112edc 1719/* Start functions for struct config_item_type tb_dev_cit */
c66ac9db 1720
2eafd729
CH		 1721static inline struct se_device *to_device(struct config_item *item)
1722{
1723 return container_of(to_config_group(item), struct se_device, dev_group);
1724}
1725
1726static ssize_t target_dev_info_show(struct config_item *item, char *page)
c66ac9db 1727{
2eafd729 1728 struct se_device *dev = to_device(item);
c66ac9db
NB		 1729 int bl = 0;
1730 ssize_t read_bytes = 0;
1731
0fd97ccf 1732 transport_dump_dev_state(dev, page, &bl);
c66ac9db 1733 read_bytes += bl;
0a06d430
CH		 1734 read_bytes += dev->transport->show_configfs_dev_params(dev,
1735 page+read_bytes);
c66ac9db
NB		 1736 return read_bytes;
1737}
1738
2eafd729
CH		 1739static ssize_t target_dev_control_store(struct config_item *item,
1740 const char *page, size_t count)
c66ac9db 1741{
2eafd729 1742 struct se_device *dev = to_device(item);
c66ac9db 1743
0a06d430 1744 return dev->transport->set_configfs_dev_params(dev, page, count);
c66ac9db
NB		 1745}
1746
2eafd729 1747static ssize_t target_dev_alias_show(struct config_item *item, char *page)
c66ac9db 1748{
2eafd729 1749 struct se_device *dev = to_device(item);
c66ac9db 1750
0fd97ccf 1751 if (!(dev->dev_flags & DF_USING_ALIAS))
c66ac9db
NB		 1752 return 0;
1753
0fd97ccf 1754 return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias);
c66ac9db
NB		 1755}
1756
2eafd729
CH		 1757static ssize_t target_dev_alias_store(struct config_item *item,
1758 const char *page, size_t count)
c66ac9db 1759{
2eafd729 1760 struct se_device *dev = to_device(item);
0fd97ccf 1761 struct se_hba *hba = dev->se_hba;
c66ac9db
NB		 1762 ssize_t read_bytes;
1763
1764 if (count > (SE_DEV_ALIAS_LEN-1)) {
6708bb27 1765 pr_err("alias count: %d exceeds"
c66ac9db
NB		 1766 " SE_DEV_ALIAS_LEN-1: %u\n", (int)count,
1767 SE_DEV_ALIAS_LEN-1);
1768 return -EINVAL;
1769 }
1770
0fd97ccf 1771 read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page);
3011684c
DC		 1772 if (!read_bytes)
1773 return -EINVAL;
0fd97ccf
CH		 1774 if (dev->dev_alias[read_bytes - 1] == '\n')
1775 dev->dev_alias[read_bytes - 1] = '\0';
0877eafd 1776
0fd97ccf 1777 dev->dev_flags |= DF_USING_ALIAS;
3011684c 1778
6708bb27 1779 pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n",
c66ac9db 1780 config_item_name(&hba->hba_group.cg_item),
0fd97ccf
CH		 1781 config_item_name(&dev->dev_group.cg_item),
1782 dev->dev_alias);
c66ac9db
NB		 1783
1784 return read_bytes;
1785}
1786
2eafd729 1787static ssize_t target_dev_udev_path_show(struct config_item *item, char *page)
c66ac9db 1788{
2eafd729 1789 struct se_device *dev = to_device(item);
c66ac9db 1790
0fd97ccf 1791 if (!(dev->dev_flags & DF_USING_UDEV_PATH))
c66ac9db
NB		 1792 return 0;
1793
0fd97ccf 1794 return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path);
c66ac9db
NB		 1795}
1796
2eafd729
CH		 1797static ssize_t target_dev_udev_path_store(struct config_item *item,
1798 const char *page, size_t count)
c66ac9db 1799{
2eafd729 1800 struct se_device *dev = to_device(item);
0fd97ccf 1801 struct se_hba *hba = dev->se_hba;
c66ac9db
NB		 1802 ssize_t read_bytes;
1803
1804 if (count > (SE_UDEV_PATH_LEN-1)) {
6708bb27 1805 pr_err("udev_path count: %d exceeds"
c66ac9db
NB		 1806 " SE_UDEV_PATH_LEN-1: %u\n", (int)count,
1807 SE_UDEV_PATH_LEN-1);
1808 return -EINVAL;
1809 }
1810
0fd97ccf 1811 read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN,
c66ac9db 1812 "%s", page);
3011684c
DC		 1813 if (!read_bytes)
1814 return -EINVAL;
0fd97ccf
CH		 1815 if (dev->udev_path[read_bytes - 1] == '\n')
1816 dev->udev_path[read_bytes - 1] = '\0';
0877eafd 1817
0fd97ccf 1818 dev->dev_flags |= DF_USING_UDEV_PATH;
3011684c 1819
6708bb27 1820 pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n",
c66ac9db 1821 config_item_name(&hba->hba_group.cg_item),
0fd97ccf
CH		 1822 config_item_name(&dev->dev_group.cg_item),
1823 dev->udev_path);
c66ac9db
NB		 1824
1825 return read_bytes;
1826}
1827
2eafd729 1828static ssize_t target_dev_enable_show(struct config_item *item, char *page)
64146db7 1829{
2eafd729 1830 struct se_device *dev = to_device(item);
64146db7
AG		 1831
1832 return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED));
1833}
1834
2eafd729
CH		 1835static ssize_t target_dev_enable_store(struct config_item *item,
1836 const char *page, size_t count)
c66ac9db 1837{
2eafd729 1838 struct se_device *dev = to_device(item);
c66ac9db 1839 char *ptr;
0fd97ccf 1840 int ret;
c66ac9db
NB		 1841
1842 ptr = strstr(page, "1");
6708bb27
AG		 1843 if (!ptr) {
1844 pr_err("For dev_enable ops, only valid value"
c66ac9db
NB		 1845 " is \"1\"\n");
1846 return -EINVAL;
1847 }
c66ac9db 1848
0fd97ccf
CH		 1849 ret = target_configure_device(dev);
1850 if (ret)
1851 return ret;
c66ac9db
NB		 1852 return count;
1853}
1854
2eafd729 1855static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page)
c66ac9db 1856{
2eafd729 1857 struct se_device *dev = to_device(item);
c66ac9db
NB		 1858 struct config_item *lu_ci;
1859 struct t10_alua_lu_gp *lu_gp;
1860 struct t10_alua_lu_gp_member *lu_gp_mem;
1861 ssize_t len = 0;
1862
c66ac9db 1863 lu_gp_mem = dev->dev_alua_lu_gp_mem;
c87fbd56
CH		 1864 if (!lu_gp_mem)
1865 return 0;
c66ac9db
NB		 1866
1867 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1868 lu_gp = lu_gp_mem->lu_gp;
6708bb27 1869 if (lu_gp) {
c66ac9db
NB		 1870 lu_ci = &lu_gp->lu_gp_group.cg_item;
1871 len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n",
1872 config_item_name(lu_ci), lu_gp->lu_gp_id);
1873 }
1874 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1875
1876 return len;
1877}
1878
2eafd729
CH		 1879static ssize_t target_dev_alua_lu_gp_store(struct config_item *item,
1880 const char *page, size_t count)
c66ac9db 1881{
2eafd729 1882 struct se_device *dev = to_device(item);
0fd97ccf 1883 struct se_hba *hba = dev->se_hba;
c66ac9db
NB		 1884 struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL;
1885 struct t10_alua_lu_gp_member *lu_gp_mem;
1886 unsigned char buf[LU_GROUP_NAME_BUF];
1887 int move = 0;
1888
c87fbd56
CH		 1889 lu_gp_mem = dev->dev_alua_lu_gp_mem;
1890 if (!lu_gp_mem)
9105bfc0 1891 return count;
c87fbd56 1892
c66ac9db 1893 if (count > LU_GROUP_NAME_BUF) {
6708bb27 1894 pr_err("ALUA LU Group Alias too large!\n");
c66ac9db
NB		 1895 return -EINVAL;
1896 }
1897 memset(buf, 0, LU_GROUP_NAME_BUF);
1898 memcpy(buf, page, count);
1899 /*
1900 * Any ALUA logical unit alias besides "NULL" means we will be
1901 * making a new group association.
1902 */
1903 if (strcmp(strstrip(buf), "NULL")) {
1904 /*
1905 * core_alua_get_lu_gp_by_name() will increment reference to
1906 * struct t10_alua_lu_gp. This reference is released with
1907 * core_alua_get_lu_gp_by_name below().
1908 */
1909 lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf));
6708bb27 1910 if (!lu_gp_new)
c66ac9db
NB		 1911 return -ENODEV;
1912 }
c66ac9db
NB		 1913
1914 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1915 lu_gp = lu_gp_mem->lu_gp;
6708bb27 1916 if (lu_gp) {
c66ac9db
NB		 1917 /*
1918 * Clearing an existing lu_gp association, and replacing
1919 * with NULL
1920 */
6708bb27
AG		 1921 if (!lu_gp_new) {
1922 pr_debug("Target_Core_ConfigFS: Releasing %s/%s"
c66ac9db
NB		 1923 " from ALUA LU Group: core/alua/lu_gps/%s, ID:"
1924 " %hu\n",
1925 config_item_name(&hba->hba_group.cg_item),
0fd97ccf 1926 config_item_name(&dev->dev_group.cg_item),
c66ac9db
NB		 1927 config_item_name(&lu_gp->lu_gp_group.cg_item),
1928 lu_gp->lu_gp_id);
1929
1930 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1931 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1932
1933 return count;
1934 }
1935 /*
1936 * Removing existing association of lu_gp_mem with lu_gp
1937 */
1938 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1939 move = 1;
1940 }
1941 /*
1942 * Associate lu_gp_mem with lu_gp_new.
1943 */
1944 __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new);
1945 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1946
6708bb27 1947 pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:"
c66ac9db
NB		 1948 " core/alua/lu_gps/%s, ID: %hu\n",
1949 (move) ? "Moving" : "Adding",
1950 config_item_name(&hba->hba_group.cg_item),
0fd97ccf 1951 config_item_name(&dev->dev_group.cg_item),
c66ac9db
NB		 1952 config_item_name(&lu_gp_new->lu_gp_group.cg_item),
1953 lu_gp_new->lu_gp_id);
1954
1955 core_alua_put_lu_gp_from_name(lu_gp_new);
1956 return count;
1957}
1958
2eafd729 1959static ssize_t target_dev_lba_map_show(struct config_item *item, char *page)
229d4f11 1960{
2eafd729 1961 struct se_device *dev = to_device(item);
229d4f11
HR		 1962 struct t10_alua_lba_map *map;
1963 struct t10_alua_lba_map_member *mem;
1964 char *b = page;
1965 int bl = 0;
1966 char state;
1967
1968 spin_lock(&dev->t10_alua.lba_map_lock);
1969 if (!list_empty(&dev->t10_alua.lba_map_list))
1970 bl += sprintf(b + bl, "%u %u\n",
1971 dev->t10_alua.lba_map_segment_size,
1972 dev->t10_alua.lba_map_segment_multiplier);
1973 list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) {
1974 bl += sprintf(b + bl, "%llu %llu",
1975 map->lba_map_first_lba, map->lba_map_last_lba);
1976 list_for_each_entry(mem, &map->lba_map_mem_list,
1977 lba_map_mem_list) {
1978 switch (mem->lba_map_mem_alua_state) {
1979 case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
1980 state = 'O';
1981 break;
1982 case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
1983 state = 'A';
1984 break;
1985 case ALUA_ACCESS_STATE_STANDBY:
1986 state = 'S';
1987 break;
1988 case ALUA_ACCESS_STATE_UNAVAILABLE:
1989 state = 'U';
1990 break;
1991 default:
1992 state = '.';
1993 break;
1994 }
1995 bl += sprintf(b + bl, " %d:%c",
1996 mem->lba_map_mem_alua_pg_id, state);
1997 }
1998 bl += sprintf(b + bl, "\n");
1999 }
2000 spin_unlock(&dev->t10_alua.lba_map_lock);
2001 return bl;
2002}
2003
2eafd729
CH		 2004static ssize_t target_dev_lba_map_store(struct config_item *item,
2005 const char *page, size_t count)
229d4f11 2006{
2eafd729 2007 struct se_device *dev = to_device(item);
229d4f11
HR		 2008 struct t10_alua_lba_map *lba_map = NULL;
2009 struct list_head lba_list;
f0a8afec 2010 char *map_entries, *orig, *ptr;
229d4f11
HR		 2011 char state;
2012 int pg_num = -1, pg;
2013 int ret = 0, num = 0, pg_id, alua_state;
2014 unsigned long start_lba = -1, end_lba = -1;
2015 unsigned long segment_size = -1, segment_mult = -1;
2016
f0a8afec 2017 orig = map_entries = kstrdup(page, GFP_KERNEL);
229d4f11
HR		 2018 if (!map_entries)
2019 return -ENOMEM;
2020
2021 INIT_LIST_HEAD(&lba_list);
2022 while ((ptr = strsep(&map_entries, "\n")) != NULL) {
2023 if (!*ptr)
2024 continue;
2025
2026 if (num == 0) {
2027 if (sscanf(ptr, "%lu %lu\n",
2028 &segment_size, &segment_mult) != 2) {
2029 pr_err("Invalid line %d\n", num);
2030 ret = -EINVAL;
2031 break;
2032 }
2033 num++;
2034 continue;
2035 }
2036 if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) {
2037 pr_err("Invalid line %d\n", num);
2038 ret = -EINVAL;
2039 break;
2040 }
2041 ptr = strchr(ptr, ' ');
2042 if (!ptr) {
2043 pr_err("Invalid line %d, missing end lba\n", num);
2044 ret = -EINVAL;
2045 break;
2046 }
2047 ptr++;
2048 ptr = strchr(ptr, ' ');
2049 if (!ptr) {
2050 pr_err("Invalid line %d, missing state definitions\n",
2051 num);
2052 ret = -EINVAL;
2053 break;
2054 }
2055 ptr++;
2056 lba_map = core_alua_allocate_lba_map(&lba_list,
2057 start_lba, end_lba);
2058 if (IS_ERR(lba_map)) {
2059 ret = PTR_ERR(lba_map);
2060 break;
2061 }
2062 pg = 0;
2063 while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) {
2064 switch (state) {
2065 case 'O':
2066 alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED;
2067 break;
2068 case 'A':
2069 alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED;
2070 break;
2071 case 'S':
2072 alua_state = ALUA_ACCESS_STATE_STANDBY;
2073 break;
2074 case 'U':
2075 alua_state = ALUA_ACCESS_STATE_UNAVAILABLE;
2076 break;
2077 default:
2078 pr_err("Invalid ALUA state '%c'\n", state);
2079 ret = -EINVAL;
2080 goto out;
2081 }
2082
2083 ret = core_alua_allocate_lba_map_mem(lba_map,
2084 pg_id, alua_state);
2085 if (ret) {
2086 pr_err("Invalid target descriptor %d:%c "
2087 "at line %d\n",
2088 pg_id, state, num);
2089 break;
2090 }
2091 pg++;
2092 ptr = strchr(ptr, ' ');
2093 if (ptr)
2094 ptr++;
2095 else
2096 break;
2097 }
2098 if (pg_num == -1)
2099 pg_num = pg;
2100 else if (pg != pg_num) {
2101 pr_err("Only %d from %d port groups definitions "
2102 "at line %d\n", pg, pg_num, num);
2103 ret = -EINVAL;
2104 break;
2105 }
2106 num++;
2107 }
2108out:
2109 if (ret) {
2110 core_alua_free_lba_map(&lba_list);
2111 count = ret;
2112 } else
2113 core_alua_set_lba_map(dev, &lba_list,
2114 segment_size, segment_mult);
f0a8afec 2115 kfree(orig);
229d4f11
HR		 2116 return count;
2117}
2118
2eafd729
CH		 2119CONFIGFS_ATTR_RO(target_dev_, info);
2120CONFIGFS_ATTR_WO(target_dev_, control);
2121CONFIGFS_ATTR(target_dev_, alias);
2122CONFIGFS_ATTR(target_dev_, udev_path);
2123CONFIGFS_ATTR(target_dev_, enable);
2124CONFIGFS_ATTR(target_dev_, alua_lu_gp);
2125CONFIGFS_ATTR(target_dev_, lba_map);
229d4f11 2126
73112edc 2127static struct configfs_attribute *target_core_dev_attrs[] = {
2eafd729
CH		 2128 &target_dev_attr_info,
2129 &target_dev_attr_control,
2130 &target_dev_attr_alias,
2131 &target_dev_attr_udev_path,
2132 &target_dev_attr_enable,
2133 &target_dev_attr_alua_lu_gp,
2134 &target_dev_attr_lba_map,
c66ac9db
NB		 2135 NULL,
2136};
2137
2138static void target_core_dev_release(struct config_item *item)
2139{
0fd97ccf
CH		 2140 struct config_group *dev_cg = to_config_group(item);
2141 struct se_device *dev =
2142 container_of(dev_cg, struct se_device, dev_group);
c66ac9db 2143
0fd97ccf 2144 target_free_device(dev);
c66ac9db
NB		 2145}
2146
c66ac9db
NB		 2147static struct configfs_item_operations target_core_dev_item_ops = {
2148 .release = target_core_dev_release,
c66ac9db
NB		 2149};
2150
73112edc 2151TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs);
c66ac9db 2152
73112edc 2153/* End functions for struct config_item_type tb_dev_cit */
c66ac9db
NB		 2154
2155/* Start functions for struct config_item_type target_core_alua_lu_gp_cit */
2156
2eafd729
CH		 2157static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item)
2158{
2159 return container_of(to_config_group(item), struct t10_alua_lu_gp,
2160 lu_gp_group);
2161}
c66ac9db 2162
2eafd729 2163static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page)
c66ac9db 2164{
2eafd729
CH		 2165 struct t10_alua_lu_gp *lu_gp = to_lu_gp(item);
2166
6708bb27 2167 if (!lu_gp->lu_gp_valid_id)
c66ac9db 2168 return 0;
c66ac9db
NB		 2169 return sprintf(page, "%hu\n", lu_gp->lu_gp_id);
2170}
2171
2eafd729
CH		 2172static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item,
2173 const char *page, size_t count)
c66ac9db 2174{
2eafd729 2175 struct t10_alua_lu_gp *lu_gp = to_lu_gp(item);
c66ac9db
NB		 2176 struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group;
2177 unsigned long lu_gp_id;
2178 int ret;
2179
57103d7f 2180 ret = kstrtoul(page, 0, &lu_gp_id);
c66ac9db 2181 if (ret < 0) {
57103d7f 2182 pr_err("kstrtoul() returned %d for"
c66ac9db 2183 " lu_gp_id\n", ret);
57103d7f 2184 return ret;
c66ac9db
NB		 2185 }
2186 if (lu_gp_id > 0x0000ffff) {
6708bb27 2187 pr_err("ALUA lu_gp_id: %lu exceeds maximum:"
c66ac9db
NB		 2188 " 0x0000ffff\n", lu_gp_id);
2189 return -EINVAL;
2190 }
2191
2192 ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id);
2193 if (ret < 0)
2194 return -EINVAL;
2195
6708bb27 2196 pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit"
c66ac9db
NB		 2197 " Group: core/alua/lu_gps/%s to ID: %hu\n",
2198 config_item_name(&alua_lu_gp_cg->cg_item),
2199 lu_gp->lu_gp_id);
2200
2201 return count;
2202}
2203
2eafd729 2204static ssize_t target_lu_gp_members_show(struct config_item *item, char *page)
c66ac9db 2205{
2eafd729 2206 struct t10_alua_lu_gp *lu_gp = to_lu_gp(item);
c66ac9db
NB		 2207 struct se_device *dev;
2208 struct se_hba *hba;
c66ac9db
NB		 2209 struct t10_alua_lu_gp_member *lu_gp_mem;
2210 ssize_t len = 0, cur_len;
2211 unsigned char buf[LU_GROUP_NAME_BUF];
2212
2213 memset(buf, 0, LU_GROUP_NAME_BUF);
2214
2215 spin_lock(&lu_gp->lu_gp_lock);
2216 list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) {
2217 dev = lu_gp_mem->lu_gp_mem_dev;
0fd97ccf 2218 hba = dev->se_hba;
c66ac9db
NB		 2219
2220 cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n",
2221 config_item_name(&hba->hba_group.cg_item),
0fd97ccf 2222 config_item_name(&dev->dev_group.cg_item));
c66ac9db
NB		 2223 cur_len++; /* Extra byte for NULL terminator */
2224
2225 if ((cur_len + len) > PAGE_SIZE) {
6708bb27 2226 pr_warn("Ran out of lu_gp_show_attr"
c66ac9db
NB		 2227 "_members buffer\n");
2228 break;
2229 }
2230 memcpy(page+len, buf, cur_len);
2231 len += cur_len;
2232 }
2233 spin_unlock(&lu_gp->lu_gp_lock);
2234
2235 return len;
2236}
2237
2eafd729
CH		 2238CONFIGFS_ATTR(target_lu_gp_, lu_gp_id);
2239CONFIGFS_ATTR_RO(target_lu_gp_, members);
c66ac9db
NB		 2240
2241static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = {
2eafd729
CH		 2242 &target_lu_gp_attr_lu_gp_id,
2243 &target_lu_gp_attr_members,
c66ac9db
NB		 2244 NULL,
2245};
2246
1f6fe7cb
NB		 2247static void target_core_alua_lu_gp_release(struct config_item *item)
2248{
2249 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2250 struct t10_alua_lu_gp, lu_gp_group);
2251
2252 core_alua_free_lu_gp(lu_gp);
2253}
2254
c66ac9db 2255static struct configfs_item_operations target_core_alua_lu_gp_ops = {
1f6fe7cb 2256 .release = target_core_alua_lu_gp_release,
c66ac9db
NB		 2257};
2258
2259static struct config_item_type target_core_alua_lu_gp_cit = {
2260 .ct_item_ops = &target_core_alua_lu_gp_ops,
2261 .ct_attrs = target_core_alua_lu_gp_attrs,
2262 .ct_owner = THIS_MODULE,
2263};
2264
2265/* End functions for struct config_item_type target_core_alua_lu_gp_cit */
2266
2267/* Start functions for struct config_item_type target_core_alua_lu_gps_cit */
2268
2269static struct config_group *target_core_alua_create_lu_gp(
2270 struct config_group *group,
2271 const char *name)
2272{
2273 struct t10_alua_lu_gp *lu_gp;
2274 struct config_group *alua_lu_gp_cg = NULL;
2275 struct config_item *alua_lu_gp_ci = NULL;
2276
2277 lu_gp = core_alua_allocate_lu_gp(name, 0);
2278 if (IS_ERR(lu_gp))
2279 return NULL;
2280
2281 alua_lu_gp_cg = &lu_gp->lu_gp_group;
2282 alua_lu_gp_ci = &alua_lu_gp_cg->cg_item;
2283
2284 config_group_init_type_name(alua_lu_gp_cg, name,
2285 &target_core_alua_lu_gp_cit);
2286
6708bb27 2287 pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit"
c66ac9db
NB		 2288 " Group: core/alua/lu_gps/%s\n",
2289 config_item_name(alua_lu_gp_ci));
2290
2291 return alua_lu_gp_cg;
2292
2293}
2294
2295static void target_core_alua_drop_lu_gp(
2296 struct config_group *group,
2297 struct config_item *item)
2298{
2299 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2300 struct t10_alua_lu_gp, lu_gp_group);
2301
6708bb27 2302 pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit"
c66ac9db
NB		 2303 " Group: core/alua/lu_gps/%s, ID: %hu\n",
2304 config_item_name(item), lu_gp->lu_gp_id);
1f6fe7cb
NB		 2305 /*
2306 * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release()
2307 * -> target_core_alua_lu_gp_release()
2308 */
c66ac9db 2309 config_item_put(item);
c66ac9db
NB		 2310}
2311
2312static struct configfs_group_operations target_core_alua_lu_gps_group_ops = {
2313 .make_group = &target_core_alua_create_lu_gp,
2314 .drop_item = &target_core_alua_drop_lu_gp,
2315};
2316
2317static struct config_item_type target_core_alua_lu_gps_cit = {
2318 .ct_item_ops = NULL,
2319 .ct_group_ops = &target_core_alua_lu_gps_group_ops,
2320 .ct_owner = THIS_MODULE,
2321};
2322
2323/* End functions for struct config_item_type target_core_alua_lu_gps_cit */
2324
2325/* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
2326
2eafd729
CH		 2327static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item)
2328{
2329 return container_of(to_config_group(item), struct t10_alua_tg_pt_gp,
2330 tg_pt_gp_group);
2331}
c66ac9db 2332
2eafd729
CH		 2333static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item,
2334 char *page)
c66ac9db
NB		 2335{
2336 return sprintf(page, "%d\n",
2eafd729 2337 atomic_read(&to_tg_pt_gp(item)->tg_pt_gp_alua_access_state));
c66ac9db
NB		 2338}
2339
2eafd729
CH		 2340static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item,
2341 const char *page, size_t count)
c66ac9db 2342{
2eafd729 2343 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
0fd97ccf 2344 struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
c66ac9db
NB		 2345 unsigned long tmp;
2346 int new_state, ret;
2347
6708bb27 2348 if (!tg_pt_gp->tg_pt_gp_valid_id) {
125d0119 2349 pr_err("Unable to do implicit ALUA on non valid"
c66ac9db
NB		 2350 " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id);
2351 return -EINVAL;
2352 }
f1453773
NB		 2353 if (!(dev->dev_flags & DF_CONFIGURED)) {
2354 pr_err("Unable to set alua_access_state while device is"
2355 " not configured\n");
2356 return -ENODEV;
2357 }
c66ac9db 2358
57103d7f 2359 ret = kstrtoul(page, 0, &tmp);
c66ac9db 2360 if (ret < 0) {
6708bb27 2361 pr_err("Unable to extract new ALUA access state from"
c66ac9db 2362 " %s\n", page);
57103d7f 2363 return ret;
c66ac9db
NB		 2364 }
2365 new_state = (int)tmp;
2366
125d0119
HR		 2367 if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) {
2368 pr_err("Unable to process implicit configfs ALUA"
2369 " transition while TPGS_IMPLICIT_ALUA is disabled\n");
c66ac9db
NB		 2370 return -EINVAL;
2371 }
c66094bf
HR		 2372 if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA &&
2373 new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) {
2374 /* LBA DEPENDENT is only allowed with implicit ALUA */
2375 pr_err("Unable to process implicit configfs ALUA transition"
2376 " while explicit ALUA management is enabled\n");
2377 return -EINVAL;
2378 }
c66ac9db 2379
0fd97ccf 2380 ret = core_alua_do_port_transition(tg_pt_gp, dev,
c66ac9db
NB		 2381 NULL, NULL, new_state, 0);
2382 return (!ret) ? count : -EINVAL;
2383}
2384
2eafd729
CH		 2385static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item,
2386 char *page)
c66ac9db 2387{
2eafd729 2388 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
c66ac9db
NB		 2389 return sprintf(page, "%s\n",
2390 core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status));
2391}
2392
2eafd729
CH		 2393static ssize_t target_tg_pt_gp_alua_access_status_store(
2394 struct config_item *item, const char *page, size_t count)
c66ac9db 2395{
2eafd729 2396 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
c66ac9db
NB		 2397 unsigned long tmp;
2398 int new_status, ret;
2399
6708bb27
AG		 2400 if (!tg_pt_gp->tg_pt_gp_valid_id) {
2401 pr_err("Unable to do set ALUA access status on non"
c66ac9db
NB		 2402 " valid tg_pt_gp ID: %hu\n",
2403 tg_pt_gp->tg_pt_gp_valid_id);
2404 return -EINVAL;
2405 }
2406
57103d7f 2407 ret = kstrtoul(page, 0, &tmp);
c66ac9db 2408 if (ret < 0) {
6708bb27 2409 pr_err("Unable to extract new ALUA access status"
c66ac9db 2410 " from %s\n", page);
57103d7f 2411 return ret;
c66ac9db
NB		 2412 }
2413 new_status = (int)tmp;
2414
2415 if ((new_status != ALUA_STATUS_NONE) &&
125d0119
HR		 2416 (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
2417 (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) {
6708bb27 2418 pr_err("Illegal ALUA access status: 0x%02x\n",
c66ac9db
NB		 2419 new_status);
2420 return -EINVAL;
2421 }
2422
2423 tg_pt_gp->tg_pt_gp_alua_access_status = new_status;
2424 return count;
2425}
2426
2eafd729
CH		 2427static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item,
2428 char *page)
c66ac9db 2429{
2eafd729 2430 return core_alua_show_access_type(to_tg_pt_gp(item), page);
c66ac9db
NB		 2431}
2432
2eafd729
CH		 2433static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item,
2434 const char *page, size_t count)
c66ac9db 2435{
2eafd729 2436 return core_alua_store_access_type(to_tg_pt_gp(item), page, count);
c66ac9db
NB		 2437}
2438
2eafd729
CH		 2439#define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \
2440static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \
2441 struct config_item *item, char *p) \
b0a382c5 2442{ \
2eafd729
CH		 2443 struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \
2444 return sprintf(p, "%d\n", \
2445 !!(t->tg_pt_gp_alua_supported_states & _bit)); \
2446} \
2447 \
2448static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \
2449 struct config_item *item, const char *p, size_t c) \
b0a382c5 2450{ \
2eafd729 2451 struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \
b0a382c5
HR		 2452 unsigned long tmp; \
2453 int ret; \
2454 \
2455 if (!t->tg_pt_gp_valid_id) { \
2456 pr_err("Unable to do set ##_name ALUA state on non" \
2457 " valid tg_pt_gp ID: %hu\n", \
2458 t->tg_pt_gp_valid_id); \
2459 return -EINVAL; \
2460 } \
2461 \
2462 ret = kstrtoul(p, 0, &tmp); \
2463 if (ret < 0) { \
2464 pr_err("Invalid value '%s', must be '0' or '1'\n", p); \
2465 return -EINVAL; \
2466 } \
2467 if (tmp > 1) { \
2468 pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \
2469 return -EINVAL; \
2470 } \
1f0b030c 2471 if (tmp) \
2eafd729 2472 t->tg_pt_gp_alua_supported_states |= _bit; \
b0a382c5 2473 else \
2eafd729 2474 t->tg_pt_gp_alua_supported_states &= ~_bit; \
b0a382c5
HR		 2475 \
2476 return c; \
2477}
2478
2eafd729
CH		 2479ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP);
2480ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP);
2481ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP);
2482ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP);
2483ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP);
2484ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP);
2485ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP);
6be526c4 2486
2eafd729
CH		 2487static ssize_t target_tg_pt_gp_alua_write_metadata_show(
2488 struct config_item *item, char *page)
c66ac9db 2489{
2eafd729
CH		 2490 return sprintf(page, "%d\n",
2491 to_tg_pt_gp(item)->tg_pt_gp_write_metadata);
c66ac9db
NB		 2492}
2493
2eafd729
CH		 2494static ssize_t target_tg_pt_gp_alua_write_metadata_store(
2495 struct config_item *item, const char *page, size_t count)
c66ac9db 2496{
2eafd729 2497 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
c66ac9db
NB		 2498 unsigned long tmp;
2499 int ret;
2500
57103d7f 2501 ret = kstrtoul(page, 0, &tmp);
c66ac9db 2502 if (ret < 0) {
6708bb27 2503 pr_err("Unable to extract alua_write_metadata\n");
57103d7f 2504 return ret;
c66ac9db
NB		 2505 }
2506
2507 if ((tmp != 0) && (tmp != 1)) {
6708bb27 2508 pr_err("Illegal value for alua_write_metadata:"
c66ac9db
NB		 2509 " %lu\n", tmp);
2510 return -EINVAL;
2511 }
2512 tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp;
2513
2514 return count;
2515}
2516
2eafd729
CH		 2517static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item,
2518 char *page)
c66ac9db 2519{
2eafd729 2520 return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page);
c66ac9db
NB		 2521}
2522
2eafd729
CH		 2523static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item,
2524 const char *page, size_t count)
c66ac9db 2525{
2eafd729
CH		 2526 return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page,
2527 count);
c66ac9db
NB		 2528}
2529
2eafd729
CH		 2530static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item,
2531 char *page)
c66ac9db 2532{
2eafd729 2533 return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page);
c66ac9db
NB		 2534}
2535
2eafd729
CH		 2536static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item,
2537 const char *page, size_t count)
c66ac9db 2538{
2eafd729
CH		 2539 return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page,
2540 count);
c66ac9db
NB		 2541}
2542
2eafd729
CH		 2543static ssize_t target_tg_pt_gp_implicit_trans_secs_show(
2544 struct config_item *item, char *page)
5b9a4d72 2545{
2eafd729 2546 return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page);
5b9a4d72
NB		 2547}
2548
2eafd729
CH		 2549static ssize_t target_tg_pt_gp_implicit_trans_secs_store(
2550 struct config_item *item, const char *page, size_t count)
5b9a4d72 2551{
2eafd729
CH		 2552 return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page,
2553 count);
5b9a4d72
NB		 2554}
2555
2eafd729
CH		 2556static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item,
2557 char *page)
c66ac9db 2558{
2eafd729 2559 return core_alua_show_preferred_bit(to_tg_pt_gp(item), page);
c66ac9db
NB		 2560}
2561
2eafd729
CH		 2562static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item,
2563 const char *page, size_t count)
c66ac9db 2564{
2eafd729 2565 return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count);
c66ac9db
NB		 2566}
2567
2eafd729
CH		 2568static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item,
2569 char *page)
c66ac9db 2570{
2eafd729
CH		 2571 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
2572
6708bb27 2573 if (!tg_pt_gp->tg_pt_gp_valid_id)
c66ac9db 2574 return 0;
c66ac9db
NB		 2575 return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id);
2576}
2577
2eafd729
CH		 2578static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item,
2579 const char *page, size_t count)
c66ac9db 2580{
2eafd729 2581 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
c66ac9db
NB		 2582 struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2583 unsigned long tg_pt_gp_id;
2584 int ret;
2585
57103d7f 2586 ret = kstrtoul(page, 0, &tg_pt_gp_id);
c66ac9db 2587 if (ret < 0) {
57103d7f 2588 pr_err("kstrtoul() returned %d for"
c66ac9db 2589 " tg_pt_gp_id\n", ret);
57103d7f 2590 return ret;
c66ac9db
NB		 2591 }
2592 if (tg_pt_gp_id > 0x0000ffff) {
6708bb27 2593 pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:"
c66ac9db
NB		 2594 " 0x0000ffff\n", tg_pt_gp_id);
2595 return -EINVAL;
2596 }
2597
2598 ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id);
2599 if (ret < 0)
2600 return -EINVAL;
2601
6708bb27 2602 pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: "
c66ac9db
NB		 2603 "core/alua/tg_pt_gps/%s to ID: %hu\n",
2604 config_item_name(&alua_tg_pt_gp_cg->cg_item),
2605 tg_pt_gp->tg_pt_gp_id);
2606
2607 return count;
2608}
2609
2eafd729
CH		 2610static ssize_t target_tg_pt_gp_members_show(struct config_item *item,
2611 char *page)
c66ac9db 2612{
2eafd729 2613 struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item);
c66ac9db 2614 struct se_lun *lun;
c66ac9db
NB		 2615 ssize_t len = 0, cur_len;
2616 unsigned char buf[TG_PT_GROUP_NAME_BUF];
2617
2618 memset(buf, 0, TG_PT_GROUP_NAME_BUF);
2619
2620 spin_lock(&tg_pt_gp->tg_pt_gp_lock);
adf653f9
CH		 2621 list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list,
2622 lun_tg_pt_gp_link) {
2623 struct se_portal_group *tpg = lun->lun_tpg;
c66ac9db
NB		 2624
2625 cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
e3d6f909
AG		 2626 "/%s\n", tpg->se_tpg_tfo->get_fabric_name(),
2627 tpg->se_tpg_tfo->tpg_get_wwn(tpg),
2628 tpg->se_tpg_tfo->tpg_get_tag(tpg),
c66ac9db
NB		 2629 config_item_name(&lun->lun_group.cg_item));
2630 cur_len++; /* Extra byte for NULL terminator */
2631
2632 if ((cur_len + len) > PAGE_SIZE) {
6708bb27 2633 pr_warn("Ran out of lu_gp_show_attr"
c66ac9db
NB		 2634 "_members buffer\n");
2635 break;
2636 }
2637 memcpy(page+len, buf, cur_len);
2638 len += cur_len;
2639 }
2640 spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
2641
2642 return len;
2643}
2644
2eafd729
CH		 2645CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state);
2646CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status);
2647CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type);
2648CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning);
2649CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline);
2650CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent);
2651CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable);
2652CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby);
2653CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized);
2654CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized);
2655CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata);
2656CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs);
2657CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs);
2658CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs);
2659CONFIGFS_ATTR(target_tg_pt_gp_, preferred);
2660CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id);
2661CONFIGFS_ATTR_RO(target_tg_pt_gp_, members);
c66ac9db
NB		 2662
2663static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
2eafd729
CH		 2664 &target_tg_pt_gp_attr_alua_access_state,
2665 &target_tg_pt_gp_attr_alua_access_status,
2666 &target_tg_pt_gp_attr_alua_access_type,
2667 &target_tg_pt_gp_attr_alua_support_transitioning,
2668 &target_tg_pt_gp_attr_alua_support_offline,
2669 &target_tg_pt_gp_attr_alua_support_lba_dependent,
2670 &target_tg_pt_gp_attr_alua_support_unavailable,
2671 &target_tg_pt_gp_attr_alua_support_standby,
2672 &target_tg_pt_gp_attr_alua_support_active_nonoptimized,
2673 &target_tg_pt_gp_attr_alua_support_active_optimized,
2674 &target_tg_pt_gp_attr_alua_write_metadata,
2675 &target_tg_pt_gp_attr_nonop_delay_msecs,
2676 &target_tg_pt_gp_attr_trans_delay_msecs,
2677 &target_tg_pt_gp_attr_implicit_trans_secs,
2678 &target_tg_pt_gp_attr_preferred,
2679 &target_tg_pt_gp_attr_tg_pt_gp_id,
2680 &target_tg_pt_gp_attr_members,
c66ac9db
NB		 2681 NULL,
2682};
2683
1f6fe7cb
NB		 2684static void target_core_alua_tg_pt_gp_release(struct config_item *item)
2685{
2686 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2687 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2688
2689 core_alua_free_tg_pt_gp(tg_pt_gp);
2690}
2691
c66ac9db 2692static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = {
1f6fe7cb 2693 .release = target_core_alua_tg_pt_gp_release,
c66ac9db
NB		 2694};
2695
2696static struct config_item_type target_core_alua_tg_pt_gp_cit = {
2697 .ct_item_ops = &target_core_alua_tg_pt_gp_ops,
2698 .ct_attrs = target_core_alua_tg_pt_gp_attrs,
2699 .ct_owner = THIS_MODULE,
2700};
2701
2702/* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
2703
72aca57b 2704/* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */
c66ac9db
NB		 2705
2706static struct config_group *target_core_alua_create_tg_pt_gp(
2707 struct config_group *group,
2708 const char *name)
2709{
2710 struct t10_alua *alua = container_of(group, struct t10_alua,
2711 alua_tg_pt_gps_group);
2712 struct t10_alua_tg_pt_gp *tg_pt_gp;
c66ac9db
NB		 2713 struct config_group *alua_tg_pt_gp_cg = NULL;
2714 struct config_item *alua_tg_pt_gp_ci = NULL;
2715
0fd97ccf 2716 tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0);
6708bb27 2717 if (!tg_pt_gp)
c66ac9db
NB		 2718 return NULL;
2719
2720 alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2721 alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item;
2722
2723 config_group_init_type_name(alua_tg_pt_gp_cg, name,
2724 &target_core_alua_tg_pt_gp_cit);
2725
6708bb27 2726 pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port"
c66ac9db
NB		 2727 " Group: alua/tg_pt_gps/%s\n",
2728 config_item_name(alua_tg_pt_gp_ci));
2729
2730 return alua_tg_pt_gp_cg;
2731}
2732
2733static void target_core_alua_drop_tg_pt_gp(
2734 struct config_group *group,
2735 struct config_item *item)
2736{
2737 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2738 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2739
6708bb27 2740 pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port"
c66ac9db
NB		 2741 " Group: alua/tg_pt_gps/%s, ID: %hu\n",
2742 config_item_name(item), tg_pt_gp->tg_pt_gp_id);
1f6fe7cb
NB		 2743 /*
2744 * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release()
2745 * -> target_core_alua_tg_pt_gp_release().
2746 */
c66ac9db 2747 config_item_put(item);
c66ac9db
NB		 2748}
2749
2750static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = {
2751 .make_group = &target_core_alua_create_tg_pt_gp,
2752 .drop_item = &target_core_alua_drop_tg_pt_gp,
2753};
2754
72aca57b 2755TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL);
c66ac9db 2756
72aca57b 2757/* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */
c66ac9db
NB		 2758
2759/* Start functions for struct config_item_type target_core_alua_cit */
2760
2761/*
2762 * target_core_alua_cit is a ConfigFS group that lives under
2763 * /sys/kernel/config/target/core/alua. There are default groups
2764 * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to
2765 * target_core_alua_cit in target_core_init_configfs() below.
2766 */
2767static struct config_item_type target_core_alua_cit = {
2768 .ct_item_ops = NULL,
2769 .ct_attrs = NULL,
2770 .ct_owner = THIS_MODULE,
2771};
2772
2773/* End functions for struct config_item_type target_core_alua_cit */
2774
d23ab570 2775/* Start functions for struct config_item_type tb_dev_stat_cit */
12d23384
NB		 2776
2777static struct config_group *target_core_stat_mkdir(
2778 struct config_group *group,
2779 const char *name)
2780{
2781 return ERR_PTR(-ENOSYS);
2782}
2783
2784static void target_core_stat_rmdir(
2785 struct config_group *group,
2786 struct config_item *item)
2787{
2788 return;
2789}
2790
2791static struct configfs_group_operations target_core_stat_group_ops = {
2792 .make_group = &target_core_stat_mkdir,
2793 .drop_item = &target_core_stat_rmdir,
2794};
2795
d23ab570 2796TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL);
12d23384 2797
d23ab570 2798/* End functions for struct config_item_type tb_dev_stat_cit */
12d23384 2799
c66ac9db
NB		 2800/* Start functions for struct config_item_type target_core_hba_cit */
2801
2802static struct config_group *target_core_make_subdev(
2803 struct config_group *group,
2804 const char *name)
2805{
2806 struct t10_alua_tg_pt_gp *tg_pt_gp;
c66ac9db
NB		 2807 struct config_item *hba_ci = &group->cg_item;
2808 struct se_hba *hba = item_to_hba(hba_ci);
0a06d430 2809 struct target_backend *tb = hba->backend;
0fd97ccf 2810 struct se_device *dev;
12d23384 2811 int errno = -ENOMEM, ret;
c66ac9db 2812
12d23384
NB		 2813 ret = mutex_lock_interruptible(&hba->hba_access_mutex);
2814 if (ret)
2815 return ERR_PTR(ret);
c66ac9db 2816
0fd97ccf
CH		 2817 dev = target_alloc_device(hba, name);
2818 if (!dev)
2819 goto out_unlock;
2820
1ae1602d 2821 config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit);
c66ac9db 2822
0fd97ccf 2823 config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
0a06d430 2824 &tb->tb_dev_attrib_cit);
1ae1602d
CH		 2825 configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group);
2826
0fd97ccf 2827 config_group_init_type_name(&dev->dev_pr_group, "pr",
0a06d430 2828 &tb->tb_dev_pr_cit);
1ae1602d
CH		 2829 configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group);
2830
0fd97ccf 2831 config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn",
0a06d430 2832 &tb->tb_dev_wwn_cit);
1ae1602d
CH		 2833 configfs_add_default_group(&dev->t10_wwn.t10_wwn_group,
2834 &dev->dev_group);
2835
0fd97ccf 2836 config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group,
0a06d430 2837 "alua", &tb->tb_dev_alua_tg_pt_gps_cit);
1ae1602d
CH		 2838 configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group,
2839 &dev->dev_group);
2840
0fd97ccf 2841 config_group_init_type_name(&dev->dev_stat_grps.stat_group,
0a06d430 2842 "statistics", &tb->tb_dev_stat_cit);
1ae1602d
CH		 2843 configfs_add_default_group(&dev->dev_stat_grps.stat_group,
2844 &dev->dev_group);
12d23384 2845
c66ac9db 2846 /*
12d23384 2847 * Add core/$HBA/$DEV/alua/default_tg_pt_gp
c66ac9db 2848 */
0fd97ccf 2849 tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1);
6708bb27 2850 if (!tg_pt_gp)
1ae1602d 2851 goto out_free_device;
0fd97ccf 2852 dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
c66ac9db 2853
c66ac9db
NB		 2854 config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
2855 "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
1ae1602d
CH		 2856 configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group,
2857 &dev->t10_alua.alua_tg_pt_gps_group);
2858
12d23384
NB		 2859 /*
2860 * Add core/$HBA/$DEV/statistics/ default groups
2861 */
0fd97ccf 2862 target_stat_setup_dev_default_groups(dev);
c66ac9db
NB		 2863
2864 mutex_unlock(&hba->hba_access_mutex);
1ae1602d 2865 return &dev->dev_group;
0fd97ccf 2866
0fd97ccf
CH		 2867out_free_device:
2868 target_free_device(dev);
2869out_unlock:
c66ac9db 2870 mutex_unlock(&hba->hba_access_mutex);
12d23384 2871 return ERR_PTR(errno);
c66ac9db
NB		 2872}
2873
2874static void target_core_drop_subdev(
2875 struct config_group *group,
2876 struct config_item *item)
2877{
0fd97ccf
CH		 2878 struct config_group *dev_cg = to_config_group(item);
2879 struct se_device *dev =
2880 container_of(dev_cg, struct se_device, dev_group);
c66ac9db 2881 struct se_hba *hba;
c66ac9db 2882
0fd97ccf 2883 hba = item_to_hba(&dev->se_hba->hba_group.cg_item);
c66ac9db 2884
1f6fe7cb 2885 mutex_lock(&hba->hba_access_mutex);
c66ac9db 2886
1ae1602d
CH		 2887 configfs_remove_default_groups(&dev->dev_stat_grps.stat_group);
2888 configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group);
12d23384 2889
1f6fe7cb
NB		 2890 /*
2891 * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp
2892 * directly from target_core_alua_tg_pt_gp_release().
2893 */
0fd97ccf 2894 dev->t10_alua.default_tg_pt_gp = NULL;
c66ac9db 2895
1ae1602d
CH		 2896 configfs_remove_default_groups(dev_cg);
2897
c66ac9db 2898 /*
0fd97ccf 2899 * se_dev is released from target_core_dev_item_ops->release()
c66ac9db 2900 */
1f6fe7cb 2901 config_item_put(item);
c66ac9db 2902 mutex_unlock(&hba->hba_access_mutex);
c66ac9db
NB		 2903}
2904
2905static struct configfs_group_operations target_core_hba_group_ops = {
2906 .make_group = target_core_make_subdev,
2907 .drop_item = target_core_drop_subdev,
2908};
2909
c66ac9db 2910
2eafd729
CH		 2911static inline struct se_hba *to_hba(struct config_item *item)
2912{
2913 return container_of(to_config_group(item), struct se_hba, hba_group);
2914}
c66ac9db 2915
2eafd729 2916static ssize_t target_hba_info_show(struct config_item *item, char *page)
c66ac9db 2917{
2eafd729
CH		 2918 struct se_hba *hba = to_hba(item);
2919
c66ac9db 2920 return sprintf(page, "HBA Index: %d plugin: %s version: %s\n",
0a06d430 2921 hba->hba_id, hba->backend->ops->name,
ce8dd25d 2922 TARGET_CORE_VERSION);
c66ac9db
NB		 2923}
2924
2eafd729 2925static ssize_t target_hba_mode_show(struct config_item *item, char *page)
c66ac9db 2926{
2eafd729 2927 struct se_hba *hba = to_hba(item);
c66ac9db
NB		 2928 int hba_mode = 0;
2929
2930 if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE)
2931 hba_mode = 1;
2932
2933 return sprintf(page, "%d\n", hba_mode);
2934}
2935
2eafd729
CH		 2936static ssize_t target_hba_mode_store(struct config_item *item,
2937 const char *page, size_t count)
c66ac9db 2938{
2eafd729 2939 struct se_hba *hba = to_hba(item);
c66ac9db
NB		 2940 unsigned long mode_flag;
2941 int ret;
2942
0a06d430 2943 if (hba->backend->ops->pmode_enable_hba == NULL)
c66ac9db
NB		 2944 return -EINVAL;
2945
57103d7f 2946 ret = kstrtoul(page, 0, &mode_flag);
c66ac9db 2947 if (ret < 0) {
6708bb27 2948 pr_err("Unable to extract hba mode flag: %d\n", ret);
57103d7f 2949 return ret;
c66ac9db
NB		 2950 }
2951
0fd97ccf 2952 if (hba->dev_count) {
6708bb27 2953 pr_err("Unable to set hba_mode with active devices\n");
c66ac9db
NB		 2954 return -EINVAL;
2955 }
c66ac9db 2956
0a06d430 2957 ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag);
c66ac9db
NB		 2958 if (ret < 0)
2959 return -EINVAL;
2960 if (ret > 0)
2961 hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
2962 else if (ret == 0)
2963 hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
2964
2965 return count;
2966}
2967
2eafd729
CH		 2968CONFIGFS_ATTR_RO(target_, hba_info);
2969CONFIGFS_ATTR(target_, hba_mode);
c66ac9db 2970
1f6fe7cb
NB		 2971static void target_core_hba_release(struct config_item *item)
2972{
2973 struct se_hba *hba = container_of(to_config_group(item),
2974 struct se_hba, hba_group);
2975 core_delete_hba(hba);
2976}
2977
c66ac9db 2978static struct configfs_attribute *target_core_hba_attrs[] = {
2eafd729
CH		 2979 &target_attr_hba_info,
2980 &target_attr_hba_mode,
c66ac9db
NB		 2981 NULL,
2982};
2983
2984static struct configfs_item_operations target_core_hba_item_ops = {
1f6fe7cb 2985 .release = target_core_hba_release,
c66ac9db
NB		 2986};
2987
2988static struct config_item_type target_core_hba_cit = {
2989 .ct_item_ops = &target_core_hba_item_ops,
2990 .ct_group_ops = &target_core_hba_group_ops,
2991 .ct_attrs = target_core_hba_attrs,
2992 .ct_owner = THIS_MODULE,
2993};
2994
2995static struct config_group *target_core_call_addhbatotarget(
2996 struct config_group *group,
2997 const char *name)
2998{
2999 char *se_plugin_str, *str, *str2;
3000 struct se_hba *hba;
3001 char buf[TARGET_CORE_NAME_MAX_LEN];
3002 unsigned long plugin_dep_id = 0;
3003 int ret;
3004
3005 memset(buf, 0, TARGET_CORE_NAME_MAX_LEN);
60d645a4 3006 if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) {
6708bb27 3007 pr_err("Passed *name strlen(): %d exceeds"
c66ac9db
NB		 3008 " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name),
3009 TARGET_CORE_NAME_MAX_LEN);
3010 return ERR_PTR(-ENAMETOOLONG);
3011 }
3012 snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name);
3013
3014 str = strstr(buf, "_");
6708bb27
AG		 3015 if (!str) {
3016 pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n");
c66ac9db
NB		 3017 return ERR_PTR(-EINVAL);
3018 }
3019 se_plugin_str = buf;
3020 /*
3021 * Special case for subsystem plugins that have "_" in their names.
3022 * Namely rd_direct and rd_mcp..
3023 */
3024 str2 = strstr(str+1, "_");
6708bb27 3025 if (str2) {
c66ac9db
NB		 3026 *str2 = '\0'; /* Terminate for *se_plugin_str */
3027 str2++; /* Skip to start of plugin dependent ID */
3028 str = str2;
3029 } else {
3030 *str = '\0'; /* Terminate for *se_plugin_str */
3031 str++; /* Skip to start of plugin dependent ID */
3032 }
3033
57103d7f 3034 ret = kstrtoul(str, 0, &plugin_dep_id);
c66ac9db 3035 if (ret < 0) {
57103d7f 3036 pr_err("kstrtoul() returned %d for"
c66ac9db 3037 " plugin_dep_id\n", ret);
57103d7f 3038 return ERR_PTR(ret);
c66ac9db
NB		 3039 }
3040 /*
3041 * Load up TCM subsystem plugins if they have not already been loaded.
3042 */
dbc5623e 3043 transport_subsystem_check_init();
c66ac9db
NB		 3044
3045 hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0);
3046 if (IS_ERR(hba))
3047 return ERR_CAST(hba);
3048
3049 config_group_init_type_name(&hba->hba_group, name,
3050 &target_core_hba_cit);
3051
3052 return &hba->hba_group;
3053}
3054
3055static void target_core_call_delhbafromtarget(
3056 struct config_group *group,
3057 struct config_item *item)
3058{
1f6fe7cb
NB		 3059 /*
3060 * core_delete_hba() is called from target_core_hba_item_ops->release()
3061 * -> target_core_hba_release()
3062 */
c66ac9db 3063 config_item_put(item);
c66ac9db
NB		 3064}
3065
3066static struct configfs_group_operations target_core_group_ops = {
3067 .make_group = target_core_call_addhbatotarget,
3068 .drop_item = target_core_call_delhbafromtarget,
3069};
3070
3071static struct config_item_type target_core_cit = {
3072 .ct_item_ops = NULL,
3073 .ct_group_ops = &target_core_group_ops,
3074 .ct_attrs = NULL,
3075 .ct_owner = THIS_MODULE,
3076};
3077
3078/* Stop functions for struct config_item_type target_core_hba_cit */
3079
0a06d430 3080void target_setup_backend_cits(struct target_backend *tb)
73112edc 3081{
0a06d430
CH		 3082 target_core_setup_dev_cit(tb);
3083 target_core_setup_dev_attrib_cit(tb);
3084 target_core_setup_dev_pr_cit(tb);
3085 target_core_setup_dev_wwn_cit(tb);
3086 target_core_setup_dev_alua_tg_pt_gps_cit(tb);
3087 target_core_setup_dev_stat_cit(tb);
73112edc 3088}
73112edc 3089
54550fab 3090static int __init target_core_init_configfs(void)
c66ac9db 3091{
d588cf8f 3092 struct configfs_subsystem *subsys = &target_core_fabrics;
c66ac9db
NB		 3093 struct t10_alua_lu_gp *lu_gp;
3094 int ret;
3095
6708bb27 3096 pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage"
c66ac9db
NB		 3097 " Engine: %s on %s/%s on "UTS_RELEASE"\n",
3098 TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine);
3099
c66ac9db
NB		 3100 config_group_init(&subsys->su_group);
3101 mutex_init(&subsys->su_mutex);
3102
e3d6f909 3103 ret = init_se_kmem_caches();
c66ac9db 3104 if (ret < 0)
e3d6f909 3105 return ret;
c66ac9db
NB		 3106 /*
3107 * Create $CONFIGFS/target/core default group for HBA <-> Storage Object
3108 * and ALUA Logical Unit Group and Target Port Group infrastructure.
3109 */
1ae1602d
CH		 3110 config_group_init_type_name(&target_core_hbagroup, "core",
3111 &target_core_cit);
3112 configfs_add_default_group(&target_core_hbagroup, &subsys->su_group);
c66ac9db 3113
c66ac9db
NB		 3114 /*
3115 * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/
3116 */
1ae1602d
CH		 3117 config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit);
3118 configfs_add_default_group(&alua_group, &target_core_hbagroup);
3119
c66ac9db
NB		 3120 /*
3121 * Add ALUA Logical Unit Group and Target Port Group ConfigFS
3122 * groups under /sys/kernel/config/target/core/alua/
3123 */
1ae1602d
CH		 3124 config_group_init_type_name(&alua_lu_gps_group, "lu_gps",
3125 &target_core_alua_lu_gps_cit);
3126 configfs_add_default_group(&alua_lu_gps_group, &alua_group);
c66ac9db 3127
c66ac9db
NB		 3128 /*
3129 * Add core/alua/lu_gps/default_lu_gp
3130 */
3131 lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1);
37bb7899
PST		 3132 if (IS_ERR(lu_gp)) {
3133 ret = -ENOMEM;
c66ac9db 3134 goto out_global;
37bb7899 3135 }
c66ac9db 3136
c66ac9db
NB		 3137 config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
3138 &target_core_alua_lu_gp_cit);
1ae1602d
CH		 3139 configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group);
3140
e3d6f909 3141 default_lu_gp = lu_gp;
1ae1602d 3142
c66ac9db
NB		 3143 /*
3144 * Register the target_core_mod subsystem with configfs.
3145 */
3146 ret = configfs_register_subsystem(subsys);
3147 if (ret < 0) {
6708bb27 3148 pr_err("Error %d while registering subsystem %s\n",
c66ac9db
NB		 3149 ret, subsys->su_group.cg_item.ci_namebuf);
3150 goto out_global;
3151 }
6708bb27 3152 pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric"
ce8dd25d 3153 " Infrastructure: "TARGET_CORE_VERSION" on %s/%s"
c66ac9db
NB		 3154 " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine);
3155 /*
3156 * Register built-in RAMDISK subsystem logic for virtual LUN 0
3157 */
3158 ret = rd_module_init();
3159 if (ret < 0)
3160 goto out;
3161
0d0f9dfb
RD		 3162 ret = core_dev_setup_virtual_lun0();
3163 if (ret < 0)
c66ac9db
NB		 3164 goto out;
3165
f99715ac
NB		 3166 ret = target_xcopy_setup_pt();
3167 if (ret < 0)
3168 goto out;
3169
c66ac9db
NB		 3170 return 0;
3171
3172out:
3173 configfs_unregister_subsystem(subsys);
c66ac9db
NB		 3174 core_dev_release_virtual_lun0();
3175 rd_module_exit();
3176out_global:
e3d6f909
AG		 3177 if (default_lu_gp) {
3178 core_alua_free_lu_gp(default_lu_gp);
3179 default_lu_gp = NULL;
c66ac9db 3180 }
e3d6f909
AG		 3181 release_se_kmem_caches();
3182 return ret;
c66ac9db
NB		 3183}
3184
54550fab 3185static void __exit target_core_exit_configfs(void)
c66ac9db 3186{
1ae1602d
CH		 3187 configfs_remove_default_groups(&alua_lu_gps_group);
3188 configfs_remove_default_groups(&alua_group);
3189 configfs_remove_default_groups(&target_core_hbagroup);
c66ac9db 3190
7c2bf6e9
NB		 3191 /*
3192 * We expect subsys->su_group.default_groups to be released
3193 * by configfs subsystem provider logic..
3194 */
d588cf8f 3195 configfs_unregister_subsystem(&target_core_fabrics);
c66ac9db 3196
e3d6f909
AG		 3197 core_alua_free_lu_gp(default_lu_gp);
3198 default_lu_gp = NULL;
7c2bf6e9 3199
6708bb27 3200 pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric"
c66ac9db
NB		 3201 " Infrastructure\n");
3202
c66ac9db
NB		 3203 core_dev_release_virtual_lun0();
3204 rd_module_exit();
f99715ac 3205 target_xcopy_release_pt();
e3d6f909 3206 release_se_kmem_caches();
c66ac9db
NB		 3207}
3208
3209MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS");
3210MODULE_AUTHOR("nab@Linux-iSCSI.org");
3211MODULE_LICENSE("GPL");
3212
3213module_init(target_core_init_configfs);
3214module_exit(target_core_exit_configfs);
Linux 6.x block layer and io_uring tree(s)