projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
target: Fix Task Aborted Status (TAS) handling
[deliverable/linux.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
NB		 43#include <target/target_core_fabric_configfs.h>
44#include <target/target_core_configfs.h>
45#include <target/configfs_macros.h>
46
e26d99ae 47#include "target_core_internal.h"
c66ac9db 48#include "target_core_alua.h"
c66ac9db
NB		 49#include "target_core_pr.h"
50#include "target_core_rd.h"
f99715ac 51#include "target_core_xcopy.h"
c66ac9db 52
e3d6f909
AG		 53extern struct t10_alua_lu_gp *default_lu_gp;
54
d0f474e5
RD		 55static LIST_HEAD(g_tf_list);
56static DEFINE_MUTEX(g_tf_lock);
c66ac9db
NB		 57
58struct target_core_configfs_attribute {
59 struct configfs_attribute attr;
60 ssize_t (*show)(void *, char *);
61 ssize_t (*store)(void *, const char *, size_t);
62};
63
e3d6f909
AG		 64static struct config_group target_core_hbagroup;
65static struct config_group alua_group;
66static struct config_group alua_lu_gps_group;
67
c66ac9db
NB		 68static inline struct se_hba *
69item_to_hba(struct config_item *item)
70{
71 return container_of(to_config_group(item), struct se_hba, hba_group);
72}
73
74/*
75 * Attributes for /sys/kernel/config/target/
76 */
77static ssize_t target_core_attr_show(struct config_item *item,
78 struct configfs_attribute *attr,
79 char *page)
80{
81 return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s"
82 " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION,
83 utsname()->sysname, utsname()->machine);
84}
85
86static struct configfs_item_operations target_core_fabric_item_ops = {
87 .show_attribute = target_core_attr_show,
88};
89
90static struct configfs_attribute target_core_item_attr_version = {
91 .ca_owner = THIS_MODULE,
92 .ca_name = "version",
93 .ca_mode = S_IRUGO,
94};
95
96static struct target_fabric_configfs *target_core_get_fabric(
97 const char *name)
98{
99 struct target_fabric_configfs *tf;
100
6708bb27 101 if (!name)
c66ac9db
NB		 102 return NULL;
103
104 mutex_lock(&g_tf_lock);
105 list_for_each_entry(tf, &g_tf_list, tf_list) {
6708bb27 106 if (!strcmp(tf->tf_name, name)) {
c66ac9db
NB		 107 atomic_inc(&tf->tf_access_cnt);
108 mutex_unlock(&g_tf_lock);
109 return tf;
110 }
111 }
112 mutex_unlock(&g_tf_lock);
113
114 return NULL;
115}
116
117/*
118 * Called from struct target_core_group_ops->make_group()
119 */
120static struct config_group *target_core_register_fabric(
121 struct config_group *group,
122 const char *name)
123{
124 struct target_fabric_configfs *tf;
125 int ret;
126
6708bb27 127 pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
c66ac9db 128 " %s\n", group, name);
c66ac9db
NB		 129 /*
130 * Below are some hardcoded request_module() calls to automatically
131 * local fabric modules when the following is called:
132 *
133 * mkdir -p /sys/kernel/config/target/$MODULE_NAME
134 *
135 * Note that this does not limit which TCM fabric module can be
136 * registered, but simply provids auto loading logic for modules with
137 * mkdir(2) system calls with known TCM fabric modules.
138 */
6708bb27 139 if (!strncmp(name, "iscsi", 5)) {
c66ac9db
NB		 140 /*
141 * Automatically load the LIO Target fabric module when the
142 * following is called:
143 *
144 * mkdir -p $CONFIGFS/target/iscsi
145 */
146 ret = request_module("iscsi_target_mod");
147 if (ret < 0) {
6708bb27 148 pr_err("request_module() failed for"
c66ac9db
NB		 149 " iscsi_target_mod.ko: %d\n", ret);
150 return ERR_PTR(-EINVAL);
151 }
6708bb27 152 } else if (!strncmp(name, "loopback", 8)) {
c66ac9db
NB		 153 /*
154 * Automatically load the tcm_loop fabric module when the
155 * following is called:
156 *
157 * mkdir -p $CONFIGFS/target/loopback
158 */
159 ret = request_module("tcm_loop");
160 if (ret < 0) {
6708bb27 161 pr_err("request_module() failed for"
c66ac9db
NB		 162 " tcm_loop.ko: %d\n", ret);
163 return ERR_PTR(-EINVAL);
164 }
165 }
166
167 tf = target_core_get_fabric(name);
6708bb27
AG		 168 if (!tf) {
169 pr_err("target_core_get_fabric() failed for %s\n",
c66ac9db
NB		 170 name);
171 return ERR_PTR(-EINVAL);
172 }
6708bb27 173 pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:"
c66ac9db
NB		 174 " %s\n", tf->tf_name);
175 /*
176 * On a successful target_core_get_fabric() look, the returned
177 * struct target_fabric_configfs *tf will contain a usage reference.
178 */
6708bb27 179 pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
d80e224d 180 &tf->tf_cit_tmpl.tfc_wwn_cit);
c66ac9db
NB		 181
182 tf->tf_group.default_groups = tf->tf_default_groups;
183 tf->tf_group.default_groups[0] = &tf->tf_disc_group;
184 tf->tf_group.default_groups[1] = NULL;
185
186 config_group_init_type_name(&tf->tf_group, name,
d80e224d 187 &tf->tf_cit_tmpl.tfc_wwn_cit);
c66ac9db 188 config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
d80e224d 189 &tf->tf_cit_tmpl.tfc_discovery_cit);
c66ac9db 190
6708bb27 191 pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
c66ac9db
NB		 192 " %s\n", tf->tf_group.cg_item.ci_name);
193 /*
194 * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item()
195 */
196 tf->tf_ops.tf_subsys = tf->tf_subsys;
197 tf->tf_fabric = &tf->tf_group.cg_item;
6708bb27 198 pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric"
c66ac9db
NB		 199 " for %s\n", name);
200
201 return &tf->tf_group;
202}
203
204/*
205 * Called from struct target_core_group_ops->drop_item()
206 */
207static void target_core_deregister_fabric(
208 struct config_group *group,
209 struct config_item *item)
210{
211 struct target_fabric_configfs *tf = container_of(
212 to_config_group(item), struct target_fabric_configfs, tf_group);
213 struct config_group *tf_group;
214 struct config_item *df_item;
215 int i;
216
6708bb27 217 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in"
c66ac9db
NB		 218 " tf list\n", config_item_name(item));
219
6708bb27 220 pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:"
c66ac9db
NB		 221 " %s\n", tf->tf_name);
222 atomic_dec(&tf->tf_access_cnt);
223
6708bb27 224 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing"
c66ac9db
NB		 225 " tf->tf_fabric for %s\n", tf->tf_name);
226 tf->tf_fabric = NULL;
227
6708bb27 228 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci"
c66ac9db
NB		 229 " %s\n", config_item_name(item));
230
231 tf_group = &tf->tf_group;
232 for (i = 0; tf_group->default_groups[i]; i++) {
233 df_item = &tf_group->default_groups[i]->cg_item;
234 tf_group->default_groups[i] = NULL;
235 config_item_put(df_item);
236 }
237 config_item_put(item);
238}
239
240static struct configfs_group_operations target_core_fabric_group_ops = {
241 .make_group = &target_core_register_fabric,
242 .drop_item = &target_core_deregister_fabric,
243};
244
245/*
246 * All item attributes appearing in /sys/kernel/target/ appear here.
247 */
248static struct configfs_attribute *target_core_fabric_item_attrs[] = {
249 &target_core_item_attr_version,
250 NULL,
251};
252
253/*
254 * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/
255 */
256static struct config_item_type target_core_fabrics_item = {
257 .ct_item_ops = &target_core_fabric_item_ops,
258 .ct_group_ops = &target_core_fabric_group_ops,
259 .ct_attrs = target_core_fabric_item_attrs,
260 .ct_owner = THIS_MODULE,
261};
262
263static struct configfs_subsystem target_core_fabrics = {
264 .su_group = {
265 .cg_item = {
266 .ci_namebuf = "target",
267 .ci_type = &target_core_fabrics_item,
268 },
269 },
270};
271
56d128fa 272struct configfs_subsystem *target_core_subsystem[] = {
c66ac9db
NB		 273 &target_core_fabrics,
274 NULL,
275};
276
277/*##############################################################################
278// Start functions called by external Target Fabrics Modules
279//############################################################################*/
280
281/*
282 * First function called by fabric modules to:
283 *
284 * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer.
285 * 2) Add struct target_fabric_configfs to g_tf_list
286 * 3) Return struct target_fabric_configfs to fabric module to be passed
287 * into target_fabric_configfs_register().
288 */
289struct target_fabric_configfs *target_fabric_configfs_init(
290 struct module *fabric_mod,
291 const char *name)
292{
293 struct target_fabric_configfs *tf;
294
c66ac9db 295 if (!(name)) {
6708bb27 296 pr_err("Unable to locate passed fabric name\n");
e3d6f909 297 return ERR_PTR(-EINVAL);
c66ac9db 298 }
60d645a4 299 if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) {
6708bb27 300 pr_err("Passed name: %s exceeds TARGET_FABRIC"
c66ac9db 301 "_NAME_SIZE\n", name);
e3d6f909 302 return ERR_PTR(-EINVAL);
c66ac9db
NB		 303 }
304
305 tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL);
6708bb27 306 if (!tf)
e3d6f909 307 return ERR_PTR(-ENOMEM);
c66ac9db
NB		 308
309 INIT_LIST_HEAD(&tf->tf_list);
310 atomic_set(&tf->tf_access_cnt, 0);
311 /*
312 * Setup the default generic struct config_item_type's (cits) in
313 * struct target_fabric_configfs->tf_cit_tmpl
314 */
315 tf->tf_module = fabric_mod;
316 target_fabric_setup_cits(tf);
317
318 tf->tf_subsys = target_core_subsystem[0];
319 snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name);
320
321 mutex_lock(&g_tf_lock);
322 list_add_tail(&tf->tf_list, &g_tf_list);
323 mutex_unlock(&g_tf_lock);
324
6708bb27 325 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>"
c66ac9db 326 ">>>>>>>>>>>>>>\n");
6708bb27 327 pr_debug("Initialized struct target_fabric_configfs: %p for"
c66ac9db
NB		 328 " %s\n", tf, tf->tf_name);
329 return tf;
330}
331EXPORT_SYMBOL(target_fabric_configfs_init);
332
333/*
334 * Called by fabric plugins after FAILED target_fabric_configfs_register() call.
335 */
336void target_fabric_configfs_free(
337 struct target_fabric_configfs *tf)
338{
339 mutex_lock(&g_tf_lock);
340 list_del(&tf->tf_list);
341 mutex_unlock(&g_tf_lock);
342
343 kfree(tf);
344}
345EXPORT_SYMBOL(target_fabric_configfs_free);
346
347/*
348 * Perform a sanity check of the passed tf->tf_ops before completing
349 * TCM fabric module registration.
350 */
351static int target_fabric_tf_ops_check(
352 struct target_fabric_configfs *tf)
353{
354 struct target_core_fabric_ops *tfo = &tf->tf_ops;
355
6708bb27
AG		 356 if (!tfo->get_fabric_name) {
357 pr_err("Missing tfo->get_fabric_name()\n");
c66ac9db
NB		 358 return -EINVAL;
359 }
6708bb27
AG		 360 if (!tfo->get_fabric_proto_ident) {
361 pr_err("Missing tfo->get_fabric_proto_ident()\n");
c66ac9db
NB		 362 return -EINVAL;
363 }
6708bb27
AG		 364 if (!tfo->tpg_get_wwn) {
365 pr_err("Missing tfo->tpg_get_wwn()\n");
c66ac9db
NB		 366 return -EINVAL;
367 }
6708bb27
AG		 368 if (!tfo->tpg_get_tag) {
369 pr_err("Missing tfo->tpg_get_tag()\n");
c66ac9db
NB		 370 return -EINVAL;
371 }
6708bb27
AG		 372 if (!tfo->tpg_get_default_depth) {
373 pr_err("Missing tfo->tpg_get_default_depth()\n");
c66ac9db
NB		 374 return -EINVAL;
375 }
6708bb27
AG		 376 if (!tfo->tpg_get_pr_transport_id) {
377 pr_err("Missing tfo->tpg_get_pr_transport_id()\n");
c66ac9db
NB		 378 return -EINVAL;
379 }
6708bb27
AG		 380 if (!tfo->tpg_get_pr_transport_id_len) {
381 pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n");
c66ac9db
NB		 382 return -EINVAL;
383 }
6708bb27
AG		 384 if (!tfo->tpg_check_demo_mode) {
385 pr_err("Missing tfo->tpg_check_demo_mode()\n");
c66ac9db
NB		 386 return -EINVAL;
387 }
6708bb27
AG		 388 if (!tfo->tpg_check_demo_mode_cache) {
389 pr_err("Missing tfo->tpg_check_demo_mode_cache()\n");
c66ac9db
NB		 390 return -EINVAL;
391 }
6708bb27
AG		 392 if (!tfo->tpg_check_demo_mode_write_protect) {
393 pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n");
c66ac9db
NB		 394 return -EINVAL;
395 }
6708bb27
AG		 396 if (!tfo->tpg_check_prod_mode_write_protect) {
397 pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n");
c66ac9db
NB		 398 return -EINVAL;
399 }
6708bb27
AG		 400 if (!tfo->tpg_alloc_fabric_acl) {
401 pr_err("Missing tfo->tpg_alloc_fabric_acl()\n");
c66ac9db
NB		 402 return -EINVAL;
403 }
6708bb27
AG		 404 if (!tfo->tpg_release_fabric_acl) {
405 pr_err("Missing tfo->tpg_release_fabric_acl()\n");
c66ac9db
NB		 406 return -EINVAL;
407 }
6708bb27
AG		 408 if (!tfo->tpg_get_inst_index) {
409 pr_err("Missing tfo->tpg_get_inst_index()\n");
c66ac9db
NB		 410 return -EINVAL;
411 }
35462975 412 if (!tfo->release_cmd) {
6708bb27 413 pr_err("Missing tfo->release_cmd()\n");
c66ac9db
NB		 414 return -EINVAL;
415 }
6708bb27
AG		 416 if (!tfo->shutdown_session) {
417 pr_err("Missing tfo->shutdown_session()\n");
c66ac9db
NB		 418 return -EINVAL;
419 }
6708bb27
AG		 420 if (!tfo->close_session) {
421 pr_err("Missing tfo->close_session()\n");
c66ac9db
NB		 422 return -EINVAL;
423 }
6708bb27
AG		 424 if (!tfo->sess_get_index) {
425 pr_err("Missing tfo->sess_get_index()\n");
c66ac9db
NB		 426 return -EINVAL;
427 }
6708bb27
AG		 428 if (!tfo->write_pending) {
429 pr_err("Missing tfo->write_pending()\n");
c66ac9db
NB		 430 return -EINVAL;
431 }
6708bb27
AG		 432 if (!tfo->write_pending_status) {
433 pr_err("Missing tfo->write_pending_status()\n");
c66ac9db
NB		 434 return -EINVAL;
435 }
6708bb27
AG		 436 if (!tfo->set_default_node_attributes) {
437 pr_err("Missing tfo->set_default_node_attributes()\n");
c66ac9db
NB		 438 return -EINVAL;
439 }
6708bb27
AG		 440 if (!tfo->get_task_tag) {
441 pr_err("Missing tfo->get_task_tag()\n");
c66ac9db
NB		 442 return -EINVAL;
443 }
6708bb27
AG		 444 if (!tfo->get_cmd_state) {
445 pr_err("Missing tfo->get_cmd_state()\n");
c66ac9db
NB		 446 return -EINVAL;
447 }
6708bb27
AG		 448 if (!tfo->queue_data_in) {
449 pr_err("Missing tfo->queue_data_in()\n");
c66ac9db
NB		 450 return -EINVAL;
451 }
6708bb27
AG		 452 if (!tfo->queue_status) {
453 pr_err("Missing tfo->queue_status()\n");
c66ac9db
NB		 454 return -EINVAL;
455 }
6708bb27
AG		 456 if (!tfo->queue_tm_rsp) {
457 pr_err("Missing tfo->queue_tm_rsp()\n");
c66ac9db
NB		 458 return -EINVAL;
459 }
c66ac9db
NB		 460 /*
461 * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
462 * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in
463 * target_core_fabric_configfs.c WWN+TPG group context code.
464 */
6708bb27
AG		 465 if (!tfo->fabric_make_wwn) {
466 pr_err("Missing tfo->fabric_make_wwn()\n");
c66ac9db
NB		 467 return -EINVAL;
468 }
6708bb27
AG		 469 if (!tfo->fabric_drop_wwn) {
470 pr_err("Missing tfo->fabric_drop_wwn()\n");
c66ac9db
NB		 471 return -EINVAL;
472 }
6708bb27
AG		 473 if (!tfo->fabric_make_tpg) {
474 pr_err("Missing tfo->fabric_make_tpg()\n");
c66ac9db
NB		 475 return -EINVAL;
476 }
6708bb27
AG		 477 if (!tfo->fabric_drop_tpg) {
478 pr_err("Missing tfo->fabric_drop_tpg()\n");
c66ac9db
NB		 479 return -EINVAL;
480 }
481
482 return 0;
483}
484
485/*
486 * Called 2nd from fabric module with returned parameter of
487 * struct target_fabric_configfs * from target_fabric_configfs_init().
488 *
489 * Upon a successful registration, the new fabric's struct config_item is
490 * return. Also, a pointer to this struct is set in the passed
491 * struct target_fabric_configfs.
492 */
493int target_fabric_configfs_register(
494 struct target_fabric_configfs *tf)
495{
c66ac9db
NB		 496 int ret;
497
6708bb27
AG		 498 if (!tf) {
499 pr_err("Unable to locate target_fabric_configfs"
c66ac9db
NB		 500 " pointer\n");
501 return -EINVAL;
502 }
6708bb27
AG		 503 if (!tf->tf_subsys) {
504 pr_err("Unable to target struct config_subsystem"
c66ac9db
NB		 505 " pointer\n");
506 return -EINVAL;
507 }
c66ac9db
NB		 508 ret = target_fabric_tf_ops_check(tf);
509 if (ret < 0)
510 return ret;
511
6708bb27 512 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>"
c66ac9db
NB		 513 ">>>>>>>>>>\n");
514 return 0;
515}
516EXPORT_SYMBOL(target_fabric_configfs_register);
517
518void target_fabric_configfs_deregister(
519 struct target_fabric_configfs *tf)
520{
c66ac9db
NB		 521 struct configfs_subsystem *su;
522
6708bb27
AG		 523 if (!tf) {
524 pr_err("Unable to locate passed target_fabric_"
c66ac9db
NB		 525 "configfs\n");
526 return;
527 }
528 su = tf->tf_subsys;
6708bb27
AG		 529 if (!su) {
530 pr_err("Unable to locate passed tf->tf_subsys"
c66ac9db
NB		 531 " pointer\n");
532 return;
533 }
6708bb27 534 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>"
c66ac9db
NB		 535 ">>>>>>>>>>>>\n");
536 mutex_lock(&g_tf_lock);
537 if (atomic_read(&tf->tf_access_cnt)) {
538 mutex_unlock(&g_tf_lock);
6708bb27 539 pr_err("Non zero tf->tf_access_cnt for fabric %s\n",
c66ac9db
NB		 540 tf->tf_name);
541 BUG();
542 }
543 list_del(&tf->tf_list);
544 mutex_unlock(&g_tf_lock);
545
6708bb27 546 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:"
c66ac9db
NB		 547 " %s\n", tf->tf_name);
548 tf->tf_module = NULL;
549 tf->tf_subsys = NULL;
550 kfree(tf);
551
6708bb27 552 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>"
c66ac9db 553 ">>>>>\n");
c66ac9db
NB		 554}
555EXPORT_SYMBOL(target_fabric_configfs_deregister);
556
557/*##############################################################################
558// Stop functions called by external Target Fabrics Modules
559//############################################################################*/
560
561/* Start functions for struct config_item_type target_core_dev_attrib_cit */
562
563#define DEF_DEV_ATTRIB_SHOW(_name) \
564static ssize_t target_core_dev_show_attr_##_name( \
565 struct se_dev_attrib *da, \
566 char *page) \
567{ \
0fd97ccf
CH		 568 return snprintf(page, PAGE_SIZE, "%u\n", \
569 (u32)da->da_dev->dev_attrib._name); \
c66ac9db
NB		 570}
571
572#define DEF_DEV_ATTRIB_STORE(_name) \
573static ssize_t target_core_dev_store_attr_##_name( \
574 struct se_dev_attrib *da, \
575 const char *page, \
576 size_t count) \
577{ \
c66ac9db
NB		 578 unsigned long val; \
579 int ret; \
580 \
57103d7f 581 ret = kstrtoul(page, 0, &val); \
c66ac9db 582 if (ret < 0) { \
57103d7f 583 pr_err("kstrtoul() failed with" \
c66ac9db
NB		 584 " ret: %d\n", ret); \
585 return -EINVAL; \
586 } \
0fd97ccf 587 ret = se_dev_set_##_name(da->da_dev, (u32)val); \
c66ac9db
NB		 588 \
589 return (!ret) ? count : -EINVAL; \
590}
591
592#define DEF_DEV_ATTRIB(_name) \
593DEF_DEV_ATTRIB_SHOW(_name); \
594DEF_DEV_ATTRIB_STORE(_name);
595
596#define DEF_DEV_ATTRIB_RO(_name) \
597DEF_DEV_ATTRIB_SHOW(_name);
598
599CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib);
600#define SE_DEV_ATTR(_name, _mode) \
601static struct target_core_dev_attrib_attribute \
602 target_core_dev_attrib_##_name = \
603 __CONFIGFS_EATTR(_name, _mode, \
604 target_core_dev_show_attr_##_name, \
605 target_core_dev_store_attr_##_name);
606
607#define SE_DEV_ATTR_RO(_name); \
608static struct target_core_dev_attrib_attribute \
609 target_core_dev_attrib_##_name = \
610 __CONFIGFS_EATTR_RO(_name, \
611 target_core_dev_show_attr_##_name);
612
adfa9570
TB		 613DEF_DEV_ATTRIB(emulate_model_alias);
614SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR);
615
c66ac9db
NB		 616DEF_DEV_ATTRIB(emulate_dpo);
617SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR);
618
619DEF_DEV_ATTRIB(emulate_fua_write);
620SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR);
621
622DEF_DEV_ATTRIB(emulate_fua_read);
623SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR);
624
625DEF_DEV_ATTRIB(emulate_write_cache);
626SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR);
627
628DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl);
629SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR);
630
631DEF_DEV_ATTRIB(emulate_tas);
632SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR);
633
634DEF_DEV_ATTRIB(emulate_tpu);
635SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR);
636
637DEF_DEV_ATTRIB(emulate_tpws);
638SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR);
639
0123a9ec
NB		 640DEF_DEV_ATTRIB(emulate_caw);
641SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR);
642
d397a445
NB		 643DEF_DEV_ATTRIB(emulate_3pc);
644SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR);
645
2ed22c9c
NB		 646DEF_DEV_ATTRIB(pi_prot_type);
647SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR);
648
649DEF_DEV_ATTRIB_RO(hw_pi_prot_type);
650SE_DEV_ATTR_RO(hw_pi_prot_type);
651
652DEF_DEV_ATTRIB(pi_prot_format);
653SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR);
654
c66ac9db
NB		 655DEF_DEV_ATTRIB(enforce_pr_isids);
656SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR);
657
e22a7f07
RD		 658DEF_DEV_ATTRIB(is_nonrot);
659SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR);
660
5de619a3
NB		 661DEF_DEV_ATTRIB(emulate_rest_reord);
662SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR);
663
c66ac9db
NB		 664DEF_DEV_ATTRIB_RO(hw_block_size);
665SE_DEV_ATTR_RO(hw_block_size);
666
667DEF_DEV_ATTRIB(block_size);
668SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR);
669
670DEF_DEV_ATTRIB_RO(hw_max_sectors);
671SE_DEV_ATTR_RO(hw_max_sectors);
672
015487b8
RD		 673DEF_DEV_ATTRIB(fabric_max_sectors);
674SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR);
675
c66ac9db
NB		 676DEF_DEV_ATTRIB(optimal_sectors);
677SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR);
678
679DEF_DEV_ATTRIB_RO(hw_queue_depth);
680SE_DEV_ATTR_RO(hw_queue_depth);
681
682DEF_DEV_ATTRIB(queue_depth);
683SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR);
684
c66ac9db
NB		 685DEF_DEV_ATTRIB(max_unmap_lba_count);
686SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR);
687
688DEF_DEV_ATTRIB(max_unmap_block_desc_count);
689SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR);
690
691DEF_DEV_ATTRIB(unmap_granularity);
692SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR);
693
694DEF_DEV_ATTRIB(unmap_granularity_alignment);
695SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR);
696
773cbaf7
NB		 697DEF_DEV_ATTRIB(max_write_same_len);
698SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR);
699
c66ac9db
NB		 700CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group);
701
702static struct configfs_attribute *target_core_dev_attrib_attrs[] = {
adfa9570 703 &target_core_dev_attrib_emulate_model_alias.attr,
c66ac9db
NB		 704 &target_core_dev_attrib_emulate_dpo.attr,
705 &target_core_dev_attrib_emulate_fua_write.attr,
706 &target_core_dev_attrib_emulate_fua_read.attr,
707 &target_core_dev_attrib_emulate_write_cache.attr,
708 &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr,
709 &target_core_dev_attrib_emulate_tas.attr,
710 &target_core_dev_attrib_emulate_tpu.attr,
711 &target_core_dev_attrib_emulate_tpws.attr,
0123a9ec 712 &target_core_dev_attrib_emulate_caw.attr,
d397a445 713 &target_core_dev_attrib_emulate_3pc.attr,
2ed22c9c
NB		 714 &target_core_dev_attrib_pi_prot_type.attr,
715 &target_core_dev_attrib_hw_pi_prot_type.attr,
716 &target_core_dev_attrib_pi_prot_format.attr,
c66ac9db 717 &target_core_dev_attrib_enforce_pr_isids.attr,
e22a7f07 718 &target_core_dev_attrib_is_nonrot.attr,
5de619a3 719 &target_core_dev_attrib_emulate_rest_reord.attr,
c66ac9db
NB		 720 &target_core_dev_attrib_hw_block_size.attr,
721 &target_core_dev_attrib_block_size.attr,
722 &target_core_dev_attrib_hw_max_sectors.attr,
015487b8 723 &target_core_dev_attrib_fabric_max_sectors.attr,
c66ac9db
NB		 724 &target_core_dev_attrib_optimal_sectors.attr,
725 &target_core_dev_attrib_hw_queue_depth.attr,
726 &target_core_dev_attrib_queue_depth.attr,
c66ac9db
NB		 727 &target_core_dev_attrib_max_unmap_lba_count.attr,
728 &target_core_dev_attrib_max_unmap_block_desc_count.attr,
729 &target_core_dev_attrib_unmap_granularity.attr,
730 &target_core_dev_attrib_unmap_granularity_alignment.attr,
773cbaf7 731 &target_core_dev_attrib_max_write_same_len.attr,
c66ac9db
NB		 732 NULL,
733};
734
735static struct configfs_item_operations target_core_dev_attrib_ops = {
736 .show_attribute = target_core_dev_attrib_attr_show,
737 .store_attribute = target_core_dev_attrib_attr_store,
738};
739
740static struct config_item_type target_core_dev_attrib_cit = {
741 .ct_item_ops = &target_core_dev_attrib_ops,
742 .ct_attrs = target_core_dev_attrib_attrs,
743 .ct_owner = THIS_MODULE,
744};
745
746/* End functions for struct config_item_type target_core_dev_attrib_cit */
747
748/* Start functions for struct config_item_type target_core_dev_wwn_cit */
749
750CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn);
751#define SE_DEV_WWN_ATTR(_name, _mode) \
752static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \
753 __CONFIGFS_EATTR(_name, _mode, \
754 target_core_dev_wwn_show_attr_##_name, \
755 target_core_dev_wwn_store_attr_##_name);
756
757#define SE_DEV_WWN_ATTR_RO(_name); \
758do { \
759 static struct target_core_dev_wwn_attribute \
760 target_core_dev_wwn_##_name = \
761 __CONFIGFS_EATTR_RO(_name, \
762 target_core_dev_wwn_show_attr_##_name); \
763} while (0);
764
765/*
766 * VPD page 0x80 Unit serial
767 */
768static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial(
769 struct t10_wwn *t10_wwn,
770 char *page)
771{
c66ac9db
NB		 772 return sprintf(page, "T10 VPD Unit Serial Number: %s\n",
773 &t10_wwn->unit_serial[0]);
774}
775
776static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial(
777 struct t10_wwn *t10_wwn,
778 const char *page,
779 size_t count)
780{
0fd97ccf 781 struct se_device *dev = t10_wwn->t10_dev;
c66ac9db
NB		 782 unsigned char buf[INQUIRY_VPD_SERIAL_LEN];
783
784 /*
785 * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial
786 * from the struct scsi_device level firmware, do not allow
787 * VPD Unit Serial to be emulated.
788 *
789 * Note this struct scsi_device could also be emulating VPD
790 * information from its drivers/scsi LLD. But for now we assume
791 * it is doing 'the right thing' wrt a world wide unique
792 * VPD Unit Serial Number that OS dependent multipath can depend on.
793 */
0fd97ccf 794 if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) {
6708bb27 795 pr_err("Underlying SCSI device firmware provided VPD"
c66ac9db
NB		 796 " Unit Serial, ignoring request\n");
797 return -EOPNOTSUPP;
798 }
799
60d645a4 800 if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) {
6708bb27 801 pr_err("Emulated VPD Unit Serial exceeds"
c66ac9db
NB		 802 " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN);
803 return -EOVERFLOW;
804 }
805 /*
806 * Check to see if any active $FABRIC_MOD exports exist. If they
807 * do exist, fail here as changing this information on the fly
808 * (underneath the initiator side OS dependent multipath code)
809 * could cause negative effects.
810 */
0fd97ccf
CH		 811 if (dev->export_count) {
812 pr_err("Unable to set VPD Unit Serial while"
813 " active %d $FABRIC_MOD exports exist\n",
814 dev->export_count);
815 return -EINVAL;
c66ac9db 816 }
0fd97ccf 817
c66ac9db
NB		 818 /*
819 * This currently assumes ASCII encoding for emulated VPD Unit Serial.
820 *
821 * Also, strip any newline added from the userspace
822 * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial
823 */
824 memset(buf, 0, INQUIRY_VPD_SERIAL_LEN);
825 snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page);
0fd97ccf 826 snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN,
c66ac9db 827 "%s", strstrip(buf));
0fd97ccf 828 dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL;
c66ac9db 829
6708bb27 830 pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:"
0fd97ccf 831 " %s\n", dev->t10_wwn.unit_serial);
c66ac9db
NB		 832
833 return count;
834}
835
836SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR);
837
838/*
839 * VPD page 0x83 Protocol Identifier
840 */
841static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier(
842 struct t10_wwn *t10_wwn,
843 char *page)
844{
c66ac9db
NB		 845 struct t10_vpd *vpd;
846 unsigned char buf[VPD_TMP_BUF_SIZE];
847 ssize_t len = 0;
848
c66ac9db
NB		 849 memset(buf, 0, VPD_TMP_BUF_SIZE);
850
851 spin_lock(&t10_wwn->t10_vpd_lock);
852 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) {
6708bb27 853 if (!vpd->protocol_identifier_set)
c66ac9db
NB		 854 continue;
855
856 transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE);
857
6708bb27 858 if (len + strlen(buf) >= PAGE_SIZE)
c66ac9db
NB		 859 break;
860
861 len += sprintf(page+len, "%s", buf);
862 }
863 spin_unlock(&t10_wwn->t10_vpd_lock);
864
865 return len;
866}
867
868static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier(
869 struct t10_wwn *t10_wwn,
870 const char *page,
871 size_t count)
872{
873 return -ENOSYS;
874}
875
876SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR);
877
878/*
879 * Generic wrapper for dumping VPD identifiers by association.
880 */
881#define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \
882static ssize_t target_core_dev_wwn_show_attr_##_name( \
883 struct t10_wwn *t10_wwn, \
884 char *page) \
885{ \
c66ac9db
NB		 886 struct t10_vpd *vpd; \
887 unsigned char buf[VPD_TMP_BUF_SIZE]; \
888 ssize_t len = 0; \
889 \
c66ac9db
NB		 890 spin_lock(&t10_wwn->t10_vpd_lock); \
891 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \
892 if (vpd->association != _assoc) \
893 continue; \
894 \
895 memset(buf, 0, VPD_TMP_BUF_SIZE); \
896 transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \
6708bb27 897 if (len + strlen(buf) >= PAGE_SIZE) \
c66ac9db
NB		 898 break; \
899 len += sprintf(page+len, "%s", buf); \
900 \
901 memset(buf, 0, VPD_TMP_BUF_SIZE); \
902 transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \
6708bb27 903 if (len + strlen(buf) >= PAGE_SIZE) \
c66ac9db
NB		 904 break; \
905 len += sprintf(page+len, "%s", buf); \
906 \
907 memset(buf, 0, VPD_TMP_BUF_SIZE); \
908 transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \
6708bb27 909 if (len + strlen(buf) >= PAGE_SIZE) \
c66ac9db
NB		 910 break; \
911 len += sprintf(page+len, "%s", buf); \
912 } \
913 spin_unlock(&t10_wwn->t10_vpd_lock); \
914 \
915 return len; \
916}
917
918/*
163cd5fa 919 * VPD page 0x83 Association: Logical Unit
c66ac9db
NB		 920 */
921DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00);
922
923static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit(
924 struct t10_wwn *t10_wwn,
925 const char *page,
926 size_t count)
927{
928 return -ENOSYS;
929}
930
931SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR);
932
933/*
934 * VPD page 0x83 Association: Target Port
935 */
936DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10);
937
938static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port(
939 struct t10_wwn *t10_wwn,
940 const char *page,
941 size_t count)
942{
943 return -ENOSYS;
944}
945
946SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR);
947
948/*
949 * VPD page 0x83 Association: SCSI Target Device
950 */
951DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20);
952
953static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device(
954 struct t10_wwn *t10_wwn,
955 const char *page,
956 size_t count)
957{
958 return -ENOSYS;
959}
960
961SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR);
962
963CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group);
964
965static struct configfs_attribute *target_core_dev_wwn_attrs[] = {
966 &target_core_dev_wwn_vpd_unit_serial.attr,
967 &target_core_dev_wwn_vpd_protocol_identifier.attr,
968 &target_core_dev_wwn_vpd_assoc_logical_unit.attr,
969 &target_core_dev_wwn_vpd_assoc_target_port.attr,
970 &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr,
971 NULL,
972};
973
974static struct configfs_item_operations target_core_dev_wwn_ops = {
975 .show_attribute = target_core_dev_wwn_attr_show,
976 .store_attribute = target_core_dev_wwn_attr_store,
977};
978
979static struct config_item_type target_core_dev_wwn_cit = {
980 .ct_item_ops = &target_core_dev_wwn_ops,
981 .ct_attrs = target_core_dev_wwn_attrs,
982 .ct_owner = THIS_MODULE,
983};
984
985/* End functions for struct config_item_type target_core_dev_wwn_cit */
986
987/* Start functions for struct config_item_type target_core_dev_pr_cit */
988
0fd97ccf 989CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device);
c66ac9db
NB		 990#define SE_DEV_PR_ATTR(_name, _mode) \
991static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
992 __CONFIGFS_EATTR(_name, _mode, \
993 target_core_dev_pr_show_attr_##_name, \
994 target_core_dev_pr_store_attr_##_name);
995
996#define SE_DEV_PR_ATTR_RO(_name); \
997static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
998 __CONFIGFS_EATTR_RO(_name, \
999 target_core_dev_pr_show_attr_##_name);
1000
d977f437
CH		 1001static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev,
1002 char *page)
c66ac9db
NB		 1003{
1004 struct se_node_acl *se_nacl;
1005 struct t10_pr_registration *pr_reg;
1006 char i_buf[PR_REG_ISID_ID_LEN];
c66ac9db
NB		 1007
1008 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1009
c66ac9db 1010 pr_reg = dev->dev_pr_res_holder;
d977f437
CH		 1011 if (!pr_reg)
1012 return sprintf(page, "No SPC-3 Reservation holder\n");
1013
c66ac9db 1014 se_nacl = pr_reg->pr_reg_nacl;
d2843c17 1015 core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN);
c66ac9db 1016
d977f437 1017 return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n",
e3d6f909 1018 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
d2843c17 1019 se_nacl->initiatorname, i_buf);
c66ac9db
NB		 1020}
1021
d977f437
CH		 1022static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev,
1023 char *page)
c66ac9db
NB		 1024{
1025 struct se_node_acl *se_nacl;
d977f437 1026 ssize_t len;
c66ac9db 1027
c66ac9db 1028 se_nacl = dev->dev_reserved_node_acl;
d977f437
CH		 1029 if (se_nacl) {
1030 len = sprintf(page,
1031 "SPC-2 Reservation: %s Initiator: %s\n",
1032 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
1033 se_nacl->initiatorname);
1034 } else {
1035 len = sprintf(page, "No SPC-2 Reservation holder\n");
c66ac9db 1036 }
d977f437 1037 return len;
c66ac9db
NB		 1038}
1039
0fd97ccf
CH		 1040static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev,
1041 char *page)
c66ac9db 1042{
d977f437 1043 int ret;
c66ac9db 1044
d977f437
CH		 1045 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
1046 return sprintf(page, "Passthrough\n");
c66ac9db 1047
d977f437
CH		 1048 spin_lock(&dev->dev_reservation_lock);
1049 if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
1050 ret = target_core_dev_pr_show_spc2_res(dev, page);
1051 else
1052 ret = target_core_dev_pr_show_spc3_res(dev, page);
1053 spin_unlock(&dev->dev_reservation_lock);
1054 return ret;
c66ac9db
NB		 1055}
1056
1057SE_DEV_PR_ATTR_RO(res_holder);
1058
c66ac9db 1059static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts(
0fd97ccf 1060 struct se_device *dev, char *page)
c66ac9db 1061{
c66ac9db
NB		 1062 ssize_t len = 0;
1063
c66ac9db 1064 spin_lock(&dev->dev_reservation_lock);
d977f437 1065 if (!dev->dev_pr_res_holder) {
c66ac9db 1066 len = sprintf(page, "No SPC-3 Reservation holder\n");
d977f437 1067 } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) {
c66ac9db
NB		 1068 len = sprintf(page, "SPC-3 Reservation: All Target"
1069 " Ports registration\n");
d977f437 1070 } else {
c66ac9db
NB		 1071 len = sprintf(page, "SPC-3 Reservation: Single"
1072 " Target Port registration\n");
d977f437 1073 }
c66ac9db 1074
d977f437 1075 spin_unlock(&dev->dev_reservation_lock);
c66ac9db
NB		 1076 return len;
1077}
1078
1079SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts);
1080
c66ac9db 1081static ssize_t target_core_dev_pr_show_attr_res_pr_generation(
0fd97ccf 1082 struct se_device *dev, char *page)
c66ac9db 1083{
0fd97ccf 1084 return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation);
c66ac9db
NB		 1085}
1086
1087SE_DEV_PR_ATTR_RO(res_pr_generation);
1088
1089/*
1090 * res_pr_holder_tg_port
1091 */
1092static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port(
0fd97ccf 1093 struct se_device *dev, char *page)
c66ac9db 1094{
c66ac9db
NB		 1095 struct se_node_acl *se_nacl;
1096 struct se_lun *lun;
1097 struct se_portal_group *se_tpg;
1098 struct t10_pr_registration *pr_reg;
1099 struct target_core_fabric_ops *tfo;
1100 ssize_t len = 0;
1101
c66ac9db
NB		 1102 spin_lock(&dev->dev_reservation_lock);
1103 pr_reg = dev->dev_pr_res_holder;
6708bb27 1104 if (!pr_reg) {
c66ac9db 1105 len = sprintf(page, "No SPC-3 Reservation holder\n");
d977f437 1106 goto out_unlock;
c66ac9db 1107 }
d977f437 1108
c66ac9db
NB		 1109 se_nacl = pr_reg->pr_reg_nacl;
1110 se_tpg = se_nacl->se_tpg;
1111 lun = pr_reg->pr_reg_tg_pt_lun;
e3d6f909 1112 tfo = se_tpg->se_tpg_tfo;
c66ac9db
NB		 1113
1114 len += sprintf(page+len, "SPC-3 Reservation: %s"
1115 " Target Node Endpoint: %s\n", tfo->get_fabric_name(),
1116 tfo->tpg_get_wwn(se_tpg));
1117 len += sprintf(page+len, "SPC-3 Reservation: Relative Port"
35d1efe8 1118 " Identifier Tag: %hu %s Portal Group Tag: %hu"
c66ac9db
NB		 1119 " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi,
1120 tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg),
1121 tfo->get_fabric_name(), lun->unpacked_lun);
c66ac9db 1122
d977f437
CH		 1123out_unlock:
1124 spin_unlock(&dev->dev_reservation_lock);
c66ac9db
NB		 1125 return len;
1126}
1127
1128SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port);
1129
c66ac9db 1130static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts(
0fd97ccf 1131 struct se_device *dev, char *page)
c66ac9db
NB		 1132{
1133 struct target_core_fabric_ops *tfo;
1134 struct t10_pr_registration *pr_reg;
1135 unsigned char buf[384];
1136 char i_buf[PR_REG_ISID_ID_LEN];
1137 ssize_t len = 0;
d2843c17 1138 int reg_count = 0;
c66ac9db 1139
c66ac9db
NB		 1140 len += sprintf(page+len, "SPC-3 PR Registrations:\n");
1141
0fd97ccf
CH		 1142 spin_lock(&dev->t10_pr.registration_lock);
1143 list_for_each_entry(pr_reg, &dev->t10_pr.registration_list,
c66ac9db
NB		 1144 pr_reg_list) {
1145
1146 memset(buf, 0, 384);
1147 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1148 tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
d2843c17 1149 core_pr_dump_initiator_port(pr_reg, i_buf,
c66ac9db
NB		 1150 PR_REG_ISID_ID_LEN);
1151 sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
1152 tfo->get_fabric_name(),
d2843c17 1153 pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key,
c66ac9db
NB		 1154 pr_reg->pr_res_generation);
1155
6708bb27 1156 if (len + strlen(buf) >= PAGE_SIZE)
c66ac9db
NB		 1157 break;
1158
1159 len += sprintf(page+len, "%s", buf);
1160 reg_count++;
1161 }
0fd97ccf 1162 spin_unlock(&dev->t10_pr.registration_lock);
c66ac9db 1163
6708bb27 1164 if (!reg_count)
c66ac9db
NB		 1165 len += sprintf(page+len, "None\n");
1166
1167 return len;
1168}
1169
1170SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts);
1171
c66ac9db 1172static ssize_t target_core_dev_pr_show_attr_res_pr_type(
0fd97ccf 1173 struct se_device *dev, char *page)
c66ac9db 1174{
c66ac9db
NB		 1175 struct t10_pr_registration *pr_reg;
1176 ssize_t len = 0;
1177
c66ac9db
NB		 1178 spin_lock(&dev->dev_reservation_lock);
1179 pr_reg = dev->dev_pr_res_holder;
d977f437
CH		 1180 if (pr_reg) {
1181 len = sprintf(page, "SPC-3 Reservation Type: %s\n",
1182 core_scsi3_pr_dump_type(pr_reg->pr_res_type));
1183 } else {
c66ac9db 1184 len = sprintf(page, "No SPC-3 Reservation holder\n");
c66ac9db 1185 }
c66ac9db 1186
d977f437 1187 spin_unlock(&dev->dev_reservation_lock);
c66ac9db
NB		 1188 return len;
1189}
1190
1191SE_DEV_PR_ATTR_RO(res_pr_type);
1192
c66ac9db 1193static ssize_t target_core_dev_pr_show_attr_res_type(
0fd97ccf 1194 struct se_device *dev, char *page)
c66ac9db 1195{
d977f437
CH		 1196 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
1197 return sprintf(page, "SPC_PASSTHROUGH\n");
1198 else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
1199 return sprintf(page, "SPC2_RESERVATIONS\n");
1200 else
1201 return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
c66ac9db
NB		 1202}
1203
1204SE_DEV_PR_ATTR_RO(res_type);
1205
c66ac9db 1206static ssize_t target_core_dev_pr_show_attr_res_aptpl_active(
0fd97ccf 1207 struct se_device *dev, char *page)
c66ac9db 1208{
d977f437 1209 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
c66ac9db
NB		 1210 return 0;
1211
1212 return sprintf(page, "APTPL Bit Status: %s\n",
0fd97ccf 1213 (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled");
c66ac9db
NB		 1214}
1215
1216SE_DEV_PR_ATTR_RO(res_aptpl_active);
1217
1218/*
1219 * res_aptpl_metadata
1220 */
1221static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata(
0fd97ccf 1222 struct se_device *dev, char *page)
c66ac9db 1223{
d977f437 1224 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
c66ac9db
NB		 1225 return 0;
1226
1227 return sprintf(page, "Ready to process PR APTPL metadata..\n");
1228}
1229
1230enum {
1231 Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid,
1232 Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope,
1233 Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric,
1234 Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err
1235};
1236
1237static match_table_t tokens = {
1238 {Opt_initiator_fabric, "initiator_fabric=%s"},
1239 {Opt_initiator_node, "initiator_node=%s"},
1240 {Opt_initiator_sid, "initiator_sid=%s"},
1241 {Opt_sa_res_key, "sa_res_key=%s"},
1242 {Opt_res_holder, "res_holder=%d"},
1243 {Opt_res_type, "res_type=%d"},
1244 {Opt_res_scope, "res_scope=%d"},
1245 {Opt_res_all_tg_pt, "res_all_tg_pt=%d"},
1246 {Opt_mapped_lun, "mapped_lun=%d"},
1247 {Opt_target_fabric, "target_fabric=%s"},
1248 {Opt_target_node, "target_node=%s"},
1249 {Opt_tpgt, "tpgt=%d"},
1250 {Opt_port_rtpi, "port_rtpi=%d"},
1251 {Opt_target_lun, "target_lun=%d"},
1252 {Opt_err, NULL}
1253};
1254
1255static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
0fd97ccf 1256 struct se_device *dev,
c66ac9db
NB		 1257 const char *page,
1258 size_t count)
1259{
6d180253
JJ		 1260 unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
1261 unsigned char *t_fabric = NULL, *t_port = NULL;
c66ac9db
NB		 1262 char *orig, *ptr, *arg_p, *opts;
1263 substring_t args[MAX_OPT_ARGS];
1264 unsigned long long tmp_ll;
1265 u64 sa_res_key = 0;
1266 u32 mapped_lun = 0, target_lun = 0;
1267 int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token;
1268 u16 port_rpti = 0, tpgt = 0;
1269 u8 type = 0, scope;
1270
d977f437
CH		 1271 if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
1272 return 0;
1273 if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
c66ac9db
NB		 1274 return 0;
1275
0fd97ccf 1276 if (dev->export_count) {
6708bb27 1277 pr_debug("Unable to process APTPL metadata while"
c66ac9db
NB		 1278 " active fabric exports exist\n");
1279 return -EINVAL;
1280 }
1281
1282 opts = kstrdup(page, GFP_KERNEL);
1283 if (!opts)
1284 return -ENOMEM;
1285
1286 orig = opts;
90c161b6 1287 while ((ptr = strsep(&opts, ",\n")) != NULL) {
c66ac9db
NB		 1288 if (!*ptr)
1289 continue;
1290
1291 token = match_token(ptr, tokens, args);
1292 switch (token) {
1293 case Opt_initiator_fabric:
1294 i_fabric = match_strdup(&args[0]);
6d180253
JJ		 1295 if (!i_fabric) {
1296 ret = -ENOMEM;
1297 goto out;
1298 }
c66ac9db
NB		 1299 break;
1300 case Opt_initiator_node:
1301 i_port = match_strdup(&args[0]);
6d180253
JJ		 1302 if (!i_port) {
1303 ret = -ENOMEM;
1304 goto out;
1305 }
60d645a4 1306 if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) {
6708bb27 1307 pr_err("APTPL metadata initiator_node="
c66ac9db
NB		 1308 " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n",
1309 PR_APTPL_MAX_IPORT_LEN);
1310 ret = -EINVAL;
1311 break;
1312 }
1313 break;
1314 case Opt_initiator_sid:
1315 isid = match_strdup(&args[0]);
6d180253
JJ		 1316 if (!isid) {
1317 ret = -ENOMEM;
1318 goto out;
1319 }
60d645a4 1320 if (strlen(isid) >= PR_REG_ISID_LEN) {
6708bb27 1321 pr_err("APTPL metadata initiator_isid"
c66ac9db
NB		 1322 "= exceeds PR_REG_ISID_LEN: %d\n",
1323 PR_REG_ISID_LEN);
1324 ret = -EINVAL;
1325 break;
1326 }
1327 break;
1328 case Opt_sa_res_key:
1329 arg_p = match_strdup(&args[0]);
6d180253
JJ		 1330 if (!arg_p) {
1331 ret = -ENOMEM;
1332 goto out;
1333 }
57103d7f 1334 ret = kstrtoull(arg_p, 0, &tmp_ll);
c66ac9db 1335 if (ret < 0) {
57103d7f 1336 pr_err("kstrtoull() failed for"
c66ac9db
NB		 1337 " sa_res_key=\n");
1338 goto out;
1339 }
1340 sa_res_key = (u64)tmp_ll;
1341 break;
1342 /*
1343 * PR APTPL Metadata for Reservation
1344 */
1345 case Opt_res_holder:
1346 match_int(args, &arg);
1347 res_holder = arg;
1348 break;
1349 case Opt_res_type:
1350 match_int(args, &arg);
1351 type = (u8)arg;
1352 break;
1353 case Opt_res_scope:
1354 match_int(args, &arg);
1355 scope = (u8)arg;
1356 break;
1357 case Opt_res_all_tg_pt:
1358 match_int(args, &arg);
1359 all_tg_pt = (int)arg;
1360 break;
1361 case Opt_mapped_lun:
1362 match_int(args, &arg);
1363 mapped_lun = (u32)arg;
1364 break;
1365 /*
1366 * PR APTPL Metadata for Target Port
1367 */
1368 case Opt_target_fabric:
1369 t_fabric = match_strdup(&args[0]);
6d180253
JJ		 1370 if (!t_fabric) {
1371 ret = -ENOMEM;
1372 goto out;
1373 }
c66ac9db
NB		 1374 break;
1375 case Opt_target_node:
1376 t_port = match_strdup(&args[0]);
6d180253
JJ		 1377 if (!t_port) {
1378 ret = -ENOMEM;
1379 goto out;
1380 }
60d645a4 1381 if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) {
6708bb27 1382 pr_err("APTPL metadata target_node="
c66ac9db
NB		 1383 " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n",
1384 PR_APTPL_MAX_TPORT_LEN);
1385 ret = -EINVAL;
1386 break;
1387 }
1388 break;
1389 case Opt_tpgt:
1390 match_int(args, &arg);
1391 tpgt = (u16)arg;
1392 break;
1393 case Opt_port_rtpi:
1394 match_int(args, &arg);
1395 port_rpti = (u16)arg;
1396 break;
1397 case Opt_target_lun:
1398 match_int(args, &arg);
1399 target_lun = (u32)arg;
1400 break;
1401 default:
1402 break;
1403 }
1404 }
1405
6708bb27
AG		 1406 if (!i_port || !t_port || !sa_res_key) {
1407 pr_err("Illegal parameters for APTPL registration\n");
c66ac9db
NB		 1408 ret = -EINVAL;
1409 goto out;
1410 }
1411
1412 if (res_holder && !(type)) {
6708bb27 1413 pr_err("Illegal PR type: 0x%02x for reservation"
c66ac9db
NB		 1414 " holder\n", type);
1415 ret = -EINVAL;
1416 goto out;
1417 }
1418
0fd97ccf 1419 ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key,
c66ac9db
NB		 1420 i_port, isid, mapped_lun, t_port, tpgt, target_lun,
1421 res_holder, all_tg_pt, type);
1422out:
6d180253
JJ		 1423 kfree(i_fabric);
1424 kfree(i_port);
1425 kfree(isid);
1426 kfree(t_fabric);
1427 kfree(t_port);
c66ac9db
NB		 1428 kfree(orig);
1429 return (ret == 0) ? count : ret;
1430}
1431
1432SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR);
1433
0fd97ccf 1434CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group);
c66ac9db
NB		 1435
1436static struct configfs_attribute *target_core_dev_pr_attrs[] = {
1437 &target_core_dev_pr_res_holder.attr,
1438 &target_core_dev_pr_res_pr_all_tgt_pts.attr,
1439 &target_core_dev_pr_res_pr_generation.attr,
1440 &target_core_dev_pr_res_pr_holder_tg_port.attr,
1441 &target_core_dev_pr_res_pr_registered_i_pts.attr,
1442 &target_core_dev_pr_res_pr_type.attr,
1443 &target_core_dev_pr_res_type.attr,
1444 &target_core_dev_pr_res_aptpl_active.attr,
1445 &target_core_dev_pr_res_aptpl_metadata.attr,
1446 NULL,
1447};
1448
1449static struct configfs_item_operations target_core_dev_pr_ops = {
1450 .show_attribute = target_core_dev_pr_attr_show,
1451 .store_attribute = target_core_dev_pr_attr_store,
1452};
1453
1454static struct config_item_type target_core_dev_pr_cit = {
1455 .ct_item_ops = &target_core_dev_pr_ops,
1456 .ct_attrs = target_core_dev_pr_attrs,
1457 .ct_owner = THIS_MODULE,
1458};
1459
1460/* End functions for struct config_item_type target_core_dev_pr_cit */
1461
1462/* Start functions for struct config_item_type target_core_dev_cit */
1463
1464static ssize_t target_core_show_dev_info(void *p, char *page)
1465{
0fd97ccf
CH		 1466 struct se_device *dev = p;
1467 struct se_subsystem_api *t = dev->transport;
c66ac9db
NB		 1468 int bl = 0;
1469 ssize_t read_bytes = 0;
1470
0fd97ccf 1471 transport_dump_dev_state(dev, page, &bl);
c66ac9db 1472 read_bytes += bl;
0fd97ccf 1473 read_bytes += t->show_configfs_dev_params(dev, page+read_bytes);
c66ac9db
NB		 1474 return read_bytes;
1475}
1476
1477static struct target_core_configfs_attribute target_core_attr_dev_info = {
1478 .attr = { .ca_owner = THIS_MODULE,
1479 .ca_name = "info",
1480 .ca_mode = S_IRUGO },
1481 .show = target_core_show_dev_info,
1482 .store = NULL,
1483};
1484
1485static ssize_t target_core_store_dev_control(
1486 void *p,
1487 const char *page,
1488 size_t count)
1489{
0fd97ccf
CH		 1490 struct se_device *dev = p;
1491 struct se_subsystem_api *t = dev->transport;
c66ac9db 1492
0fd97ccf 1493 return t->set_configfs_dev_params(dev, page, count);
c66ac9db
NB		 1494}
1495
1496static struct target_core_configfs_attribute target_core_attr_dev_control = {
1497 .attr = { .ca_owner = THIS_MODULE,
1498 .ca_name = "control",
1499 .ca_mode = S_IWUSR },
1500 .show = NULL,
1501 .store = target_core_store_dev_control,
1502};
1503
1504static ssize_t target_core_show_dev_alias(void *p, char *page)
1505{
0fd97ccf 1506 struct se_device *dev = p;
c66ac9db 1507
0fd97ccf 1508 if (!(dev->dev_flags & DF_USING_ALIAS))
c66ac9db
NB		 1509 return 0;
1510
0fd97ccf 1511 return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias);
c66ac9db
NB		 1512}
1513
1514static ssize_t target_core_store_dev_alias(
1515 void *p,
1516 const char *page,
1517 size_t count)
1518{
0fd97ccf
CH		 1519 struct se_device *dev = p;
1520 struct se_hba *hba = dev->se_hba;
c66ac9db
NB		 1521 ssize_t read_bytes;
1522
1523 if (count > (SE_DEV_ALIAS_LEN-1)) {
6708bb27 1524 pr_err("alias count: %d exceeds"
c66ac9db
NB		 1525 " SE_DEV_ALIAS_LEN-1: %u\n", (int)count,
1526 SE_DEV_ALIAS_LEN-1);
1527 return -EINVAL;
1528 }
1529
0fd97ccf 1530 read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page);
3011684c
DC		 1531 if (!read_bytes)
1532 return -EINVAL;
0fd97ccf
CH		 1533 if (dev->dev_alias[read_bytes - 1] == '\n')
1534 dev->dev_alias[read_bytes - 1] = '\0';
0877eafd 1535
0fd97ccf 1536 dev->dev_flags |= DF_USING_ALIAS;
3011684c 1537
6708bb27 1538 pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n",
c66ac9db 1539 config_item_name(&hba->hba_group.cg_item),
0fd97ccf
CH		 1540 config_item_name(&dev->dev_group.cg_item),
1541 dev->dev_alias);
c66ac9db
NB		 1542
1543 return read_bytes;
1544}
1545
1546static struct target_core_configfs_attribute target_core_attr_dev_alias = {
1547 .attr = { .ca_owner = THIS_MODULE,
1548 .ca_name = "alias",
1549 .ca_mode = S_IRUGO | S_IWUSR },
1550 .show = target_core_show_dev_alias,
1551 .store = target_core_store_dev_alias,
1552};
1553
1554static ssize_t target_core_show_dev_udev_path(void *p, char *page)
1555{
0fd97ccf 1556 struct se_device *dev = p;
c66ac9db 1557
0fd97ccf 1558 if (!(dev->dev_flags & DF_USING_UDEV_PATH))
c66ac9db
NB		 1559 return 0;
1560
0fd97ccf 1561 return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path);
c66ac9db
NB		 1562}
1563
1564static ssize_t target_core_store_dev_udev_path(
1565 void *p,
1566 const char *page,
1567 size_t count)
1568{
0fd97ccf
CH		 1569 struct se_device *dev = p;
1570 struct se_hba *hba = dev->se_hba;
c66ac9db
NB		 1571 ssize_t read_bytes;
1572
1573 if (count > (SE_UDEV_PATH_LEN-1)) {
6708bb27 1574 pr_err("udev_path count: %d exceeds"
c66ac9db
NB		 1575 " SE_UDEV_PATH_LEN-1: %u\n", (int)count,
1576 SE_UDEV_PATH_LEN-1);
1577 return -EINVAL;
1578 }
1579
0fd97ccf 1580 read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN,
c66ac9db 1581 "%s", page);
3011684c
DC		 1582 if (!read_bytes)
1583 return -EINVAL;
0fd97ccf
CH		 1584 if (dev->udev_path[read_bytes - 1] == '\n')
1585 dev->udev_path[read_bytes - 1] = '\0';
0877eafd 1586
0fd97ccf 1587 dev->dev_flags |= DF_USING_UDEV_PATH;
3011684c 1588
6708bb27 1589 pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n",
c66ac9db 1590 config_item_name(&hba->hba_group.cg_item),
0fd97ccf
CH		 1591 config_item_name(&dev->dev_group.cg_item),
1592 dev->udev_path);
c66ac9db
NB		 1593
1594 return read_bytes;
1595}
1596
1597static struct target_core_configfs_attribute target_core_attr_dev_udev_path = {
1598 .attr = { .ca_owner = THIS_MODULE,
1599 .ca_name = "udev_path",
1600 .ca_mode = S_IRUGO | S_IWUSR },
1601 .show = target_core_show_dev_udev_path,
1602 .store = target_core_store_dev_udev_path,
1603};
1604
64146db7
AG		 1605static ssize_t target_core_show_dev_enable(void *p, char *page)
1606{
1607 struct se_device *dev = p;
1608
1609 return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED));
1610}
1611
c66ac9db
NB		 1612static ssize_t target_core_store_dev_enable(
1613 void *p,
1614 const char *page,
1615 size_t count)
1616{
0fd97ccf 1617 struct se_device *dev = p;
c66ac9db 1618 char *ptr;
0fd97ccf 1619 int ret;
c66ac9db
NB		 1620
1621 ptr = strstr(page, "1");
6708bb27
AG		 1622 if (!ptr) {
1623 pr_err("For dev_enable ops, only valid value"
c66ac9db
NB		 1624 " is \"1\"\n");
1625 return -EINVAL;
1626 }
c66ac9db 1627
0fd97ccf
CH		 1628 ret = target_configure_device(dev);
1629 if (ret)
1630 return ret;
c66ac9db
NB		 1631 return count;
1632}
1633
1634static struct target_core_configfs_attribute target_core_attr_dev_enable = {
1635 .attr = { .ca_owner = THIS_MODULE,
1636 .ca_name = "enable",
64146db7
AG		 1637 .ca_mode = S_IRUGO | S_IWUSR },
1638 .show = target_core_show_dev_enable,
c66ac9db
NB		 1639 .store = target_core_store_dev_enable,
1640};
1641
1642static ssize_t target_core_show_alua_lu_gp(void *p, char *page)
1643{
0fd97ccf 1644 struct se_device *dev = p;
c66ac9db
NB		 1645 struct config_item *lu_ci;
1646 struct t10_alua_lu_gp *lu_gp;
1647 struct t10_alua_lu_gp_member *lu_gp_mem;
1648 ssize_t len = 0;
1649
c66ac9db 1650 lu_gp_mem = dev->dev_alua_lu_gp_mem;
c87fbd56
CH		 1651 if (!lu_gp_mem)
1652 return 0;
c66ac9db
NB		 1653
1654 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1655 lu_gp = lu_gp_mem->lu_gp;
6708bb27 1656 if (lu_gp) {
c66ac9db
NB		 1657 lu_ci = &lu_gp->lu_gp_group.cg_item;
1658 len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n",
1659 config_item_name(lu_ci), lu_gp->lu_gp_id);
1660 }
1661 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1662
1663 return len;
1664}
1665
1666static ssize_t target_core_store_alua_lu_gp(
1667 void *p,
1668 const char *page,
1669 size_t count)
1670{
0fd97ccf
CH		 1671 struct se_device *dev = p;
1672 struct se_hba *hba = dev->se_hba;
c66ac9db
NB		 1673 struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL;
1674 struct t10_alua_lu_gp_member *lu_gp_mem;
1675 unsigned char buf[LU_GROUP_NAME_BUF];
1676 int move = 0;
1677
c87fbd56
CH		 1678 lu_gp_mem = dev->dev_alua_lu_gp_mem;
1679 if (!lu_gp_mem)
1680 return 0;
1681
c66ac9db 1682 if (count > LU_GROUP_NAME_BUF) {
6708bb27 1683 pr_err("ALUA LU Group Alias too large!\n");
c66ac9db
NB		 1684 return -EINVAL;
1685 }
1686 memset(buf, 0, LU_GROUP_NAME_BUF);
1687 memcpy(buf, page, count);
1688 /*
1689 * Any ALUA logical unit alias besides "NULL" means we will be
1690 * making a new group association.
1691 */
1692 if (strcmp(strstrip(buf), "NULL")) {
1693 /*
1694 * core_alua_get_lu_gp_by_name() will increment reference to
1695 * struct t10_alua_lu_gp. This reference is released with
1696 * core_alua_get_lu_gp_by_name below().
1697 */
1698 lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf));
6708bb27 1699 if (!lu_gp_new)
c66ac9db
NB		 1700 return -ENODEV;
1701 }
c66ac9db
NB		 1702
1703 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1704 lu_gp = lu_gp_mem->lu_gp;
6708bb27 1705 if (lu_gp) {
c66ac9db
NB		 1706 /*
1707 * Clearing an existing lu_gp association, and replacing
1708 * with NULL
1709 */
6708bb27
AG		 1710 if (!lu_gp_new) {
1711 pr_debug("Target_Core_ConfigFS: Releasing %s/%s"
c66ac9db
NB		 1712 " from ALUA LU Group: core/alua/lu_gps/%s, ID:"
1713 " %hu\n",
1714 config_item_name(&hba->hba_group.cg_item),
0fd97ccf 1715 config_item_name(&dev->dev_group.cg_item),
c66ac9db
NB		 1716 config_item_name(&lu_gp->lu_gp_group.cg_item),
1717 lu_gp->lu_gp_id);
1718
1719 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1720 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1721
1722 return count;
1723 }
1724 /*
1725 * Removing existing association of lu_gp_mem with lu_gp
1726 */
1727 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1728 move = 1;
1729 }
1730 /*
1731 * Associate lu_gp_mem with lu_gp_new.
1732 */
1733 __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new);
1734 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1735
6708bb27 1736 pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:"
c66ac9db
NB		 1737 " core/alua/lu_gps/%s, ID: %hu\n",
1738 (move) ? "Moving" : "Adding",
1739 config_item_name(&hba->hba_group.cg_item),
0fd97ccf 1740 config_item_name(&dev->dev_group.cg_item),
c66ac9db
NB		 1741 config_item_name(&lu_gp_new->lu_gp_group.cg_item),
1742 lu_gp_new->lu_gp_id);
1743
1744 core_alua_put_lu_gp_from_name(lu_gp_new);
1745 return count;
1746}
1747
1748static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = {
1749 .attr = { .ca_owner = THIS_MODULE,
1750 .ca_name = "alua_lu_gp",
1751 .ca_mode = S_IRUGO | S_IWUSR },
1752 .show = target_core_show_alua_lu_gp,
1753 .store = target_core_store_alua_lu_gp,
1754};
1755
229d4f11
HR		 1756static ssize_t target_core_show_dev_lba_map(void *p, char *page)
1757{
1758 struct se_device *dev = p;
1759 struct t10_alua_lba_map *map;
1760 struct t10_alua_lba_map_member *mem;
1761 char *b = page;
1762 int bl = 0;
1763 char state;
1764
1765 spin_lock(&dev->t10_alua.lba_map_lock);
1766 if (!list_empty(&dev->t10_alua.lba_map_list))
1767 bl += sprintf(b + bl, "%u %u\n",
1768 dev->t10_alua.lba_map_segment_size,
1769 dev->t10_alua.lba_map_segment_multiplier);
1770 list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) {
1771 bl += sprintf(b + bl, "%llu %llu",
1772 map->lba_map_first_lba, map->lba_map_last_lba);
1773 list_for_each_entry(mem, &map->lba_map_mem_list,
1774 lba_map_mem_list) {
1775 switch (mem->lba_map_mem_alua_state) {
1776 case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED:
1777 state = 'O';
1778 break;
1779 case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED:
1780 state = 'A';
1781 break;
1782 case ALUA_ACCESS_STATE_STANDBY:
1783 state = 'S';
1784 break;
1785 case ALUA_ACCESS_STATE_UNAVAILABLE:
1786 state = 'U';
1787 break;
1788 default:
1789 state = '.';
1790 break;
1791 }
1792 bl += sprintf(b + bl, " %d:%c",
1793 mem->lba_map_mem_alua_pg_id, state);
1794 }
1795 bl += sprintf(b + bl, "\n");
1796 }
1797 spin_unlock(&dev->t10_alua.lba_map_lock);
1798 return bl;
1799}
1800
1801static ssize_t target_core_store_dev_lba_map(
1802 void *p,
1803 const char *page,
1804 size_t count)
1805{
1806 struct se_device *dev = p;
1807 struct t10_alua_lba_map *lba_map = NULL;
1808 struct list_head lba_list;
1809 char *map_entries, *ptr;
1810 char state;
1811 int pg_num = -1, pg;
1812 int ret = 0, num = 0, pg_id, alua_state;
1813 unsigned long start_lba = -1, end_lba = -1;
1814 unsigned long segment_size = -1, segment_mult = -1;
1815
1816 map_entries = kstrdup(page, GFP_KERNEL);
1817 if (!map_entries)
1818 return -ENOMEM;
1819
1820 INIT_LIST_HEAD(&lba_list);
1821 while ((ptr = strsep(&map_entries, "\n")) != NULL) {
1822 if (!*ptr)
1823 continue;
1824
1825 if (num == 0) {
1826 if (sscanf(ptr, "%lu %lu\n",
1827 &segment_size, &segment_mult) != 2) {
1828 pr_err("Invalid line %d\n", num);
1829 ret = -EINVAL;
1830 break;
1831 }
1832 num++;
1833 continue;
1834 }
1835 if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) {
1836 pr_err("Invalid line %d\n", num);
1837 ret = -EINVAL;
1838 break;
1839 }
1840 ptr = strchr(ptr, ' ');
1841 if (!ptr) {
1842 pr_err("Invalid line %d, missing end lba\n", num);
1843 ret = -EINVAL;
1844 break;
1845 }
1846 ptr++;
1847 ptr = strchr(ptr, ' ');
1848 if (!ptr) {
1849 pr_err("Invalid line %d, missing state definitions\n",
1850 num);
1851 ret = -EINVAL;
1852 break;
1853 }
1854 ptr++;
1855 lba_map = core_alua_allocate_lba_map(&lba_list,
1856 start_lba, end_lba);
1857 if (IS_ERR(lba_map)) {
1858 ret = PTR_ERR(lba_map);
1859 break;
1860 }
1861 pg = 0;
1862 while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) {
1863 switch (state) {
1864 case 'O':
1865 alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED;
1866 break;
1867 case 'A':
1868 alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED;
1869 break;
1870 case 'S':
1871 alua_state = ALUA_ACCESS_STATE_STANDBY;
1872 break;
1873 case 'U':
1874 alua_state = ALUA_ACCESS_STATE_UNAVAILABLE;
1875 break;
1876 default:
1877 pr_err("Invalid ALUA state '%c'\n", state);
1878 ret = -EINVAL;
1879 goto out;
1880 }
1881
1882 ret = core_alua_allocate_lba_map_mem(lba_map,
1883 pg_id, alua_state);
1884 if (ret) {
1885 pr_err("Invalid target descriptor %d:%c "
1886 "at line %d\n",
1887 pg_id, state, num);
1888 break;
1889 }
1890 pg++;
1891 ptr = strchr(ptr, ' ');
1892 if (ptr)
1893 ptr++;
1894 else
1895 break;
1896 }
1897 if (pg_num == -1)
1898 pg_num = pg;
1899 else if (pg != pg_num) {
1900 pr_err("Only %d from %d port groups definitions "
1901 "at line %d\n", pg, pg_num, num);
1902 ret = -EINVAL;
1903 break;
1904 }
1905 num++;
1906 }
1907out:
1908 if (ret) {
1909 core_alua_free_lba_map(&lba_list);
1910 count = ret;
1911 } else
1912 core_alua_set_lba_map(dev, &lba_list,
1913 segment_size, segment_mult);
1914 kfree(map_entries);
1915 return count;
1916}
1917
1918static struct target_core_configfs_attribute target_core_attr_dev_lba_map = {
1919 .attr = { .ca_owner = THIS_MODULE,
1920 .ca_name = "lba_map",
1921 .ca_mode = S_IRUGO | S_IWUSR },
1922 .show = target_core_show_dev_lba_map,
1923 .store = target_core_store_dev_lba_map,
1924};
1925
c66ac9db
NB		 1926static struct configfs_attribute *lio_core_dev_attrs[] = {
1927 &target_core_attr_dev_info.attr,
1928 &target_core_attr_dev_control.attr,
1929 &target_core_attr_dev_alias.attr,
1930 &target_core_attr_dev_udev_path.attr,
1931 &target_core_attr_dev_enable.attr,
1932 &target_core_attr_dev_alua_lu_gp.attr,
229d4f11 1933 &target_core_attr_dev_lba_map.attr,
c66ac9db
NB		 1934 NULL,
1935};
1936
1937static void target_core_dev_release(struct config_item *item)
1938{
0fd97ccf
CH		 1939 struct config_group *dev_cg = to_config_group(item);
1940 struct se_device *dev =
1941 container_of(dev_cg, struct se_device, dev_group);
c66ac9db 1942
c66ac9db 1943 kfree(dev_cg->default_groups);
0fd97ccf 1944 target_free_device(dev);
c66ac9db
NB		 1945}
1946
1947static ssize_t target_core_dev_show(struct config_item *item,
1948 struct configfs_attribute *attr,
1949 char *page)
1950{
0fd97ccf
CH		 1951 struct config_group *dev_cg = to_config_group(item);
1952 struct se_device *dev =
1953 container_of(dev_cg, struct se_device, dev_group);
c66ac9db
NB		 1954 struct target_core_configfs_attribute *tc_attr = container_of(
1955 attr, struct target_core_configfs_attribute, attr);
1956
6708bb27 1957 if (!tc_attr->show)
c66ac9db
NB		 1958 return -EINVAL;
1959
0fd97ccf 1960 return tc_attr->show(dev, page);
c66ac9db
NB		 1961}
1962
1963static ssize_t target_core_dev_store(struct config_item *item,
1964 struct configfs_attribute *attr,
1965 const char *page, size_t count)
1966{
0fd97ccf
CH		 1967 struct config_group *dev_cg = to_config_group(item);
1968 struct se_device *dev =
1969 container_of(dev_cg, struct se_device, dev_group);
c66ac9db
NB		 1970 struct target_core_configfs_attribute *tc_attr = container_of(
1971 attr, struct target_core_configfs_attribute, attr);
1972
6708bb27 1973 if (!tc_attr->store)
c66ac9db
NB		 1974 return -EINVAL;
1975
0fd97ccf 1976 return tc_attr->store(dev, page, count);
c66ac9db
NB		 1977}
1978
1979static struct configfs_item_operations target_core_dev_item_ops = {
1980 .release = target_core_dev_release,
1981 .show_attribute = target_core_dev_show,
1982 .store_attribute = target_core_dev_store,
1983};
1984
1985static struct config_item_type target_core_dev_cit = {
1986 .ct_item_ops = &target_core_dev_item_ops,
1987 .ct_attrs = lio_core_dev_attrs,
1988 .ct_owner = THIS_MODULE,
1989};
1990
1991/* End functions for struct config_item_type target_core_dev_cit */
1992
1993/* Start functions for struct config_item_type target_core_alua_lu_gp_cit */
1994
1995CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp);
1996#define SE_DEV_ALUA_LU_ATTR(_name, _mode) \
1997static struct target_core_alua_lu_gp_attribute \
1998 target_core_alua_lu_gp_##_name = \
1999 __CONFIGFS_EATTR(_name, _mode, \
2000 target_core_alua_lu_gp_show_attr_##_name, \
2001 target_core_alua_lu_gp_store_attr_##_name);
2002
2003#define SE_DEV_ALUA_LU_ATTR_RO(_name) \
2004static struct target_core_alua_lu_gp_attribute \
2005 target_core_alua_lu_gp_##_name = \
2006 __CONFIGFS_EATTR_RO(_name, \
2007 target_core_alua_lu_gp_show_attr_##_name);
2008
2009/*
2010 * lu_gp_id
2011 */
2012static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id(
2013 struct t10_alua_lu_gp *lu_gp,
2014 char *page)
2015{
6708bb27 2016 if (!lu_gp->lu_gp_valid_id)
c66ac9db
NB		 2017 return 0;
2018
2019 return sprintf(page, "%hu\n", lu_gp->lu_gp_id);
2020}
2021
2022static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id(
2023 struct t10_alua_lu_gp *lu_gp,
2024 const char *page,
2025 size_t count)
2026{
2027 struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group;
2028 unsigned long lu_gp_id;
2029 int ret;
2030
57103d7f 2031 ret = kstrtoul(page, 0, &lu_gp_id);
c66ac9db 2032 if (ret < 0) {
57103d7f 2033 pr_err("kstrtoul() returned %d for"
c66ac9db 2034 " lu_gp_id\n", ret);
57103d7f 2035 return ret;
c66ac9db
NB		 2036 }
2037 if (lu_gp_id > 0x0000ffff) {
6708bb27 2038 pr_err("ALUA lu_gp_id: %lu exceeds maximum:"
c66ac9db
NB		 2039 " 0x0000ffff\n", lu_gp_id);
2040 return -EINVAL;
2041 }
2042
2043 ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id);
2044 if (ret < 0)
2045 return -EINVAL;
2046
6708bb27 2047 pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit"
c66ac9db
NB		 2048 " Group: core/alua/lu_gps/%s to ID: %hu\n",
2049 config_item_name(&alua_lu_gp_cg->cg_item),
2050 lu_gp->lu_gp_id);
2051
2052 return count;
2053}
2054
2055SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR);
2056
2057/*
2058 * members
2059 */
2060static ssize_t target_core_alua_lu_gp_show_attr_members(
2061 struct t10_alua_lu_gp *lu_gp,
2062 char *page)
2063{
2064 struct se_device *dev;
2065 struct se_hba *hba;
c66ac9db
NB		 2066 struct t10_alua_lu_gp_member *lu_gp_mem;
2067 ssize_t len = 0, cur_len;
2068 unsigned char buf[LU_GROUP_NAME_BUF];
2069
2070 memset(buf, 0, LU_GROUP_NAME_BUF);
2071
2072 spin_lock(&lu_gp->lu_gp_lock);
2073 list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) {
2074 dev = lu_gp_mem->lu_gp_mem_dev;
0fd97ccf 2075 hba = dev->se_hba;
c66ac9db
NB		 2076
2077 cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n",
2078 config_item_name(&hba->hba_group.cg_item),
0fd97ccf 2079 config_item_name(&dev->dev_group.cg_item));
c66ac9db
NB		 2080 cur_len++; /* Extra byte for NULL terminator */
2081
2082 if ((cur_len + len) > PAGE_SIZE) {
6708bb27 2083 pr_warn("Ran out of lu_gp_show_attr"
c66ac9db
NB		 2084 "_members buffer\n");
2085 break;
2086 }
2087 memcpy(page+len, buf, cur_len);
2088 len += cur_len;
2089 }
2090 spin_unlock(&lu_gp->lu_gp_lock);
2091
2092 return len;
2093}
2094
2095SE_DEV_ALUA_LU_ATTR_RO(members);
2096
2097CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group);
2098
2099static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = {
2100 &target_core_alua_lu_gp_lu_gp_id.attr,
2101 &target_core_alua_lu_gp_members.attr,
2102 NULL,
2103};
2104
1f6fe7cb
NB		 2105static void target_core_alua_lu_gp_release(struct config_item *item)
2106{
2107 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2108 struct t10_alua_lu_gp, lu_gp_group);
2109
2110 core_alua_free_lu_gp(lu_gp);
2111}
2112
c66ac9db 2113static struct configfs_item_operations target_core_alua_lu_gp_ops = {
1f6fe7cb 2114 .release = target_core_alua_lu_gp_release,
c66ac9db
NB		 2115 .show_attribute = target_core_alua_lu_gp_attr_show,
2116 .store_attribute = target_core_alua_lu_gp_attr_store,
2117};
2118
2119static struct config_item_type target_core_alua_lu_gp_cit = {
2120 .ct_item_ops = &target_core_alua_lu_gp_ops,
2121 .ct_attrs = target_core_alua_lu_gp_attrs,
2122 .ct_owner = THIS_MODULE,
2123};
2124
2125/* End functions for struct config_item_type target_core_alua_lu_gp_cit */
2126
2127/* Start functions for struct config_item_type target_core_alua_lu_gps_cit */
2128
2129static struct config_group *target_core_alua_create_lu_gp(
2130 struct config_group *group,
2131 const char *name)
2132{
2133 struct t10_alua_lu_gp *lu_gp;
2134 struct config_group *alua_lu_gp_cg = NULL;
2135 struct config_item *alua_lu_gp_ci = NULL;
2136
2137 lu_gp = core_alua_allocate_lu_gp(name, 0);
2138 if (IS_ERR(lu_gp))
2139 return NULL;
2140
2141 alua_lu_gp_cg = &lu_gp->lu_gp_group;
2142 alua_lu_gp_ci = &alua_lu_gp_cg->cg_item;
2143
2144 config_group_init_type_name(alua_lu_gp_cg, name,
2145 &target_core_alua_lu_gp_cit);
2146
6708bb27 2147 pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit"
c66ac9db
NB		 2148 " Group: core/alua/lu_gps/%s\n",
2149 config_item_name(alua_lu_gp_ci));
2150
2151 return alua_lu_gp_cg;
2152
2153}
2154
2155static void target_core_alua_drop_lu_gp(
2156 struct config_group *group,
2157 struct config_item *item)
2158{
2159 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2160 struct t10_alua_lu_gp, lu_gp_group);
2161
6708bb27 2162 pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit"
c66ac9db
NB		 2163 " Group: core/alua/lu_gps/%s, ID: %hu\n",
2164 config_item_name(item), lu_gp->lu_gp_id);
1f6fe7cb
NB		 2165 /*
2166 * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release()
2167 * -> target_core_alua_lu_gp_release()
2168 */
c66ac9db 2169 config_item_put(item);
c66ac9db
NB		 2170}
2171
2172static struct configfs_group_operations target_core_alua_lu_gps_group_ops = {
2173 .make_group = &target_core_alua_create_lu_gp,
2174 .drop_item = &target_core_alua_drop_lu_gp,
2175};
2176
2177static struct config_item_type target_core_alua_lu_gps_cit = {
2178 .ct_item_ops = NULL,
2179 .ct_group_ops = &target_core_alua_lu_gps_group_ops,
2180 .ct_owner = THIS_MODULE,
2181};
2182
2183/* End functions for struct config_item_type target_core_alua_lu_gps_cit */
2184
2185/* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
2186
2187CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp);
2188#define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \
2189static struct target_core_alua_tg_pt_gp_attribute \
2190 target_core_alua_tg_pt_gp_##_name = \
2191 __CONFIGFS_EATTR(_name, _mode, \
2192 target_core_alua_tg_pt_gp_show_attr_##_name, \
2193 target_core_alua_tg_pt_gp_store_attr_##_name);
2194
2195#define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \
2196static struct target_core_alua_tg_pt_gp_attribute \
2197 target_core_alua_tg_pt_gp_##_name = \
2198 __CONFIGFS_EATTR_RO(_name, \
2199 target_core_alua_tg_pt_gp_show_attr_##_name);
2200
2201/*
2202 * alua_access_state
2203 */
2204static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state(
2205 struct t10_alua_tg_pt_gp *tg_pt_gp,
2206 char *page)
2207{
2208 return sprintf(page, "%d\n",
2209 atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state));
2210}
2211
2212static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
2213 struct t10_alua_tg_pt_gp *tg_pt_gp,
2214 const char *page,
2215 size_t count)
2216{
0fd97ccf 2217 struct se_device *dev = tg_pt_gp->tg_pt_gp_dev;
c66ac9db
NB		 2218 unsigned long tmp;
2219 int new_state, ret;
2220
6708bb27 2221 if (!tg_pt_gp->tg_pt_gp_valid_id) {
125d0119 2222 pr_err("Unable to do implicit ALUA on non valid"
c66ac9db
NB		 2223 " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id);
2224 return -EINVAL;
2225 }
2226
57103d7f 2227 ret = kstrtoul(page, 0, &tmp);
c66ac9db 2228 if (ret < 0) {
6708bb27 2229 pr_err("Unable to extract new ALUA access state from"
c66ac9db 2230 " %s\n", page);
57103d7f 2231 return ret;
c66ac9db
NB		 2232 }
2233 new_state = (int)tmp;
2234
125d0119
HR		 2235 if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) {
2236 pr_err("Unable to process implicit configfs ALUA"
2237 " transition while TPGS_IMPLICIT_ALUA is disabled\n");
c66ac9db
NB		 2238 return -EINVAL;
2239 }
c66094bf
HR		 2240 if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA &&
2241 new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) {
2242 /* LBA DEPENDENT is only allowed with implicit ALUA */
2243 pr_err("Unable to process implicit configfs ALUA transition"
2244 " while explicit ALUA management is enabled\n");
2245 return -EINVAL;
2246 }
c66ac9db 2247
0fd97ccf 2248 ret = core_alua_do_port_transition(tg_pt_gp, dev,
c66ac9db
NB		 2249 NULL, NULL, new_state, 0);
2250 return (!ret) ? count : -EINVAL;
2251}
2252
2253SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR);
2254
2255/*
2256 * alua_access_status
2257 */
2258static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status(
2259 struct t10_alua_tg_pt_gp *tg_pt_gp,
2260 char *page)
2261{
2262 return sprintf(page, "%s\n",
2263 core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status));
2264}
2265
2266static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status(
2267 struct t10_alua_tg_pt_gp *tg_pt_gp,
2268 const char *page,
2269 size_t count)
2270{
2271 unsigned long tmp;
2272 int new_status, ret;
2273
6708bb27
AG		 2274 if (!tg_pt_gp->tg_pt_gp_valid_id) {
2275 pr_err("Unable to do set ALUA access status on non"
c66ac9db
NB		 2276 " valid tg_pt_gp ID: %hu\n",
2277 tg_pt_gp->tg_pt_gp_valid_id);
2278 return -EINVAL;
2279 }
2280
57103d7f 2281 ret = kstrtoul(page, 0, &tmp);
c66ac9db 2282 if (ret < 0) {
6708bb27 2283 pr_err("Unable to extract new ALUA access status"
c66ac9db 2284 " from %s\n", page);
57103d7f 2285 return ret;
c66ac9db
NB		 2286 }
2287 new_status = (int)tmp;
2288
2289 if ((new_status != ALUA_STATUS_NONE) &&
125d0119
HR		 2290 (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) &&
2291 (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) {
6708bb27 2292 pr_err("Illegal ALUA access status: 0x%02x\n",
c66ac9db
NB		 2293 new_status);
2294 return -EINVAL;
2295 }
2296
2297 tg_pt_gp->tg_pt_gp_alua_access_status = new_status;
2298 return count;
2299}
2300
2301SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR);
2302
2303/*
2304 * alua_access_type
2305 */
2306static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type(
2307 struct t10_alua_tg_pt_gp *tg_pt_gp,
2308 char *page)
2309{
2310 return core_alua_show_access_type(tg_pt_gp, page);
2311}
2312
2313static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
2314 struct t10_alua_tg_pt_gp *tg_pt_gp,
2315 const char *page,
2316 size_t count)
2317{
2318 return core_alua_store_access_type(tg_pt_gp, page, count);
2319}
2320
2321SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
2322
6be526c4
HR		 2323/*
2324 * alua_supported_states
2325 */
6be526c4 2326
b0a382c5
HR		 2327#define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \
2328static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \
2329 struct t10_alua_tg_pt_gp *t, char *p) \
2330{ \
2331 return sprintf(p, "%d\n", !!(t->_var & _bit)); \
6be526c4
HR		 2332}
2333
b0a382c5
HR		 2334#define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \
2335static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\
2336 struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \
2337{ \
2338 unsigned long tmp; \
2339 int ret; \
2340 \
2341 if (!t->tg_pt_gp_valid_id) { \
2342 pr_err("Unable to do set ##_name ALUA state on non" \
2343 " valid tg_pt_gp ID: %hu\n", \
2344 t->tg_pt_gp_valid_id); \
2345 return -EINVAL; \
2346 } \
2347 \
2348 ret = kstrtoul(p, 0, &tmp); \
2349 if (ret < 0) { \
2350 pr_err("Invalid value '%s', must be '0' or '1'\n", p); \
2351 return -EINVAL; \
2352 } \
2353 if (tmp > 1) { \
2354 pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \
2355 return -EINVAL; \
2356 } \
2357 if (!tmp) \
2358 t->_var |= _bit; \
2359 else \
2360 t->_var &= ~_bit; \
2361 \
2362 return c; \
2363}
2364
2365SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning,
2366 tg_pt_gp_alua_supported_states, ALUA_T_SUP);
2367SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning,
2368 tg_pt_gp_alua_supported_states, ALUA_T_SUP);
2369SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR);
2370
2371SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline,
2372 tg_pt_gp_alua_supported_states, ALUA_O_SUP);
2373SE_DEV_ALUA_SUPPORT_STATE_STORE(offline,
2374 tg_pt_gp_alua_supported_states, ALUA_O_SUP);
2375SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR);
2376
2377SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent,
2378 tg_pt_gp_alua_supported_states, ALUA_LBD_SUP);
2379SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent,
2380 tg_pt_gp_alua_supported_states, ALUA_LBD_SUP);
c66094bf 2381SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO);
b0a382c5
HR		 2382
2383SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable,
2384 tg_pt_gp_alua_supported_states, ALUA_U_SUP);
2385SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable,
2386 tg_pt_gp_alua_supported_states, ALUA_U_SUP);
2387SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR);
2388
2389SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby,
2390 tg_pt_gp_alua_supported_states, ALUA_S_SUP);
2391SE_DEV_ALUA_SUPPORT_STATE_STORE(standby,
2392 tg_pt_gp_alua_supported_states, ALUA_S_SUP);
2393SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR);
2394
2395SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized,
2396 tg_pt_gp_alua_supported_states, ALUA_AO_SUP);
2397SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized,
2398 tg_pt_gp_alua_supported_states, ALUA_AO_SUP);
2399SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR);
2400
2401SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized,
2402 tg_pt_gp_alua_supported_states, ALUA_AN_SUP);
2403SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized,
2404 tg_pt_gp_alua_supported_states, ALUA_AN_SUP);
2405SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR);
6be526c4 2406
c66ac9db
NB		 2407/*
2408 * alua_write_metadata
2409 */
2410static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata(
2411 struct t10_alua_tg_pt_gp *tg_pt_gp,
2412 char *page)
2413{
2414 return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata);
2415}
2416
2417static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata(
2418 struct t10_alua_tg_pt_gp *tg_pt_gp,
2419 const char *page,
2420 size_t count)
2421{
2422 unsigned long tmp;
2423 int ret;
2424
57103d7f 2425 ret = kstrtoul(page, 0, &tmp);
c66ac9db 2426 if (ret < 0) {
6708bb27 2427 pr_err("Unable to extract alua_write_metadata\n");
57103d7f 2428 return ret;
c66ac9db
NB		 2429 }
2430
2431 if ((tmp != 0) && (tmp != 1)) {
6708bb27 2432 pr_err("Illegal value for alua_write_metadata:"
c66ac9db
NB		 2433 " %lu\n", tmp);
2434 return -EINVAL;
2435 }
2436 tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp;
2437
2438 return count;
2439}
2440
2441SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR);
2442
2443
2444
2445/*
2446 * nonop_delay_msecs
2447 */
2448static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs(
2449 struct t10_alua_tg_pt_gp *tg_pt_gp,
2450 char *page)
2451{
2452 return core_alua_show_nonop_delay_msecs(tg_pt_gp, page);
2453
2454}
2455
2456static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs(
2457 struct t10_alua_tg_pt_gp *tg_pt_gp,
2458 const char *page,
2459 size_t count)
2460{
2461 return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count);
2462}
2463
2464SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR);
2465
2466/*
2467 * trans_delay_msecs
2468 */
2469static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs(
2470 struct t10_alua_tg_pt_gp *tg_pt_gp,
2471 char *page)
2472{
2473 return core_alua_show_trans_delay_msecs(tg_pt_gp, page);
2474}
2475
2476static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs(
2477 struct t10_alua_tg_pt_gp *tg_pt_gp,
2478 const char *page,
2479 size_t count)
2480{
2481 return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count);
2482}
2483
2484SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR);
2485
5b9a4d72 2486/*
125d0119 2487 * implicit_trans_secs
5b9a4d72 2488 */
125d0119 2489static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs(
5b9a4d72
NB		 2490 struct t10_alua_tg_pt_gp *tg_pt_gp,
2491 char *page)
2492{
125d0119 2493 return core_alua_show_implicit_trans_secs(tg_pt_gp, page);
5b9a4d72
NB		 2494}
2495
125d0119 2496static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs(
5b9a4d72
NB		 2497 struct t10_alua_tg_pt_gp *tg_pt_gp,
2498 const char *page,
2499 size_t count)
2500{
125d0119 2501 return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count);
5b9a4d72
NB		 2502}
2503
125d0119 2504SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR);
5b9a4d72 2505
c66ac9db
NB		 2506/*
2507 * preferred
2508 */
2509
2510static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred(
2511 struct t10_alua_tg_pt_gp *tg_pt_gp,
2512 char *page)
2513{
2514 return core_alua_show_preferred_bit(tg_pt_gp, page);
2515}
2516
2517static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred(
2518 struct t10_alua_tg_pt_gp *tg_pt_gp,
2519 const char *page,
2520 size_t count)
2521{
2522 return core_alua_store_preferred_bit(tg_pt_gp, page, count);
2523}
2524
2525SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR);
2526
2527/*
2528 * tg_pt_gp_id
2529 */
2530static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id(
2531 struct t10_alua_tg_pt_gp *tg_pt_gp,
2532 char *page)
2533{
6708bb27 2534 if (!tg_pt_gp->tg_pt_gp_valid_id)
c66ac9db
NB		 2535 return 0;
2536
2537 return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id);
2538}
2539
2540static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id(
2541 struct t10_alua_tg_pt_gp *tg_pt_gp,
2542 const char *page,
2543 size_t count)
2544{
2545 struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2546 unsigned long tg_pt_gp_id;
2547 int ret;
2548
57103d7f 2549 ret = kstrtoul(page, 0, &tg_pt_gp_id);
c66ac9db 2550 if (ret < 0) {
57103d7f 2551 pr_err("kstrtoul() returned %d for"
c66ac9db 2552 " tg_pt_gp_id\n", ret);
57103d7f 2553 return ret;
c66ac9db
NB		 2554 }
2555 if (tg_pt_gp_id > 0x0000ffff) {
6708bb27 2556 pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:"
c66ac9db
NB		 2557 " 0x0000ffff\n", tg_pt_gp_id);
2558 return -EINVAL;
2559 }
2560
2561 ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id);
2562 if (ret < 0)
2563 return -EINVAL;
2564
6708bb27 2565 pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: "
c66ac9db
NB		 2566 "core/alua/tg_pt_gps/%s to ID: %hu\n",
2567 config_item_name(&alua_tg_pt_gp_cg->cg_item),
2568 tg_pt_gp->tg_pt_gp_id);
2569
2570 return count;
2571}
2572
2573SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR);
2574
2575/*
2576 * members
2577 */
2578static ssize_t target_core_alua_tg_pt_gp_show_attr_members(
2579 struct t10_alua_tg_pt_gp *tg_pt_gp,
2580 char *page)
2581{
2582 struct se_port *port;
2583 struct se_portal_group *tpg;
2584 struct se_lun *lun;
2585 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
2586 ssize_t len = 0, cur_len;
2587 unsigned char buf[TG_PT_GROUP_NAME_BUF];
2588
2589 memset(buf, 0, TG_PT_GROUP_NAME_BUF);
2590
2591 spin_lock(&tg_pt_gp->tg_pt_gp_lock);
2592 list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list,
2593 tg_pt_gp_mem_list) {
2594 port = tg_pt_gp_mem->tg_pt;
2595 tpg = port->sep_tpg;
2596 lun = port->sep_lun;
2597
2598 cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
e3d6f909
AG		 2599 "/%s\n", tpg->se_tpg_tfo->get_fabric_name(),
2600 tpg->se_tpg_tfo->tpg_get_wwn(tpg),
2601 tpg->se_tpg_tfo->tpg_get_tag(tpg),
c66ac9db
NB		 2602 config_item_name(&lun->lun_group.cg_item));
2603 cur_len++; /* Extra byte for NULL terminator */
2604
2605 if ((cur_len + len) > PAGE_SIZE) {
6708bb27 2606 pr_warn("Ran out of lu_gp_show_attr"
c66ac9db
NB		 2607 "_members buffer\n");
2608 break;
2609 }
2610 memcpy(page+len, buf, cur_len);
2611 len += cur_len;
2612 }
2613 spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
2614
2615 return len;
2616}
2617
2618SE_DEV_ALUA_TG_PT_ATTR_RO(members);
2619
2620CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp,
2621 tg_pt_gp_group);
2622
2623static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
2624 &target_core_alua_tg_pt_gp_alua_access_state.attr,
2625 &target_core_alua_tg_pt_gp_alua_access_status.attr,
2626 &target_core_alua_tg_pt_gp_alua_access_type.attr,
b0a382c5
HR		 2627 &target_core_alua_tg_pt_gp_alua_support_transitioning.attr,
2628 &target_core_alua_tg_pt_gp_alua_support_offline.attr,
2629 &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr,
2630 &target_core_alua_tg_pt_gp_alua_support_unavailable.attr,
2631 &target_core_alua_tg_pt_gp_alua_support_standby.attr,
2632 &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr,
2633 &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr,
c66ac9db
NB		 2634 &target_core_alua_tg_pt_gp_alua_write_metadata.attr,
2635 &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
2636 &target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
125d0119 2637 &target_core_alua_tg_pt_gp_implicit_trans_secs.attr,
c66ac9db
NB		 2638 &target_core_alua_tg_pt_gp_preferred.attr,
2639 &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr,
2640 &target_core_alua_tg_pt_gp_members.attr,
2641 NULL,
2642};
2643
1f6fe7cb
NB		 2644static void target_core_alua_tg_pt_gp_release(struct config_item *item)
2645{
2646 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2647 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2648
2649 core_alua_free_tg_pt_gp(tg_pt_gp);
2650}
2651
c66ac9db 2652static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = {
1f6fe7cb 2653 .release = target_core_alua_tg_pt_gp_release,
c66ac9db
NB		 2654 .show_attribute = target_core_alua_tg_pt_gp_attr_show,
2655 .store_attribute = target_core_alua_tg_pt_gp_attr_store,
2656};
2657
2658static struct config_item_type target_core_alua_tg_pt_gp_cit = {
2659 .ct_item_ops = &target_core_alua_tg_pt_gp_ops,
2660 .ct_attrs = target_core_alua_tg_pt_gp_attrs,
2661 .ct_owner = THIS_MODULE,
2662};
2663
2664/* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
2665
2666/* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
2667
2668static struct config_group *target_core_alua_create_tg_pt_gp(
2669 struct config_group *group,
2670 const char *name)
2671{
2672 struct t10_alua *alua = container_of(group, struct t10_alua,
2673 alua_tg_pt_gps_group);
2674 struct t10_alua_tg_pt_gp *tg_pt_gp;
c66ac9db
NB		 2675 struct config_group *alua_tg_pt_gp_cg = NULL;
2676 struct config_item *alua_tg_pt_gp_ci = NULL;
2677
0fd97ccf 2678 tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0);
6708bb27 2679 if (!tg_pt_gp)
c66ac9db
NB		 2680 return NULL;
2681
2682 alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2683 alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item;
2684
2685 config_group_init_type_name(alua_tg_pt_gp_cg, name,
2686 &target_core_alua_tg_pt_gp_cit);
2687
6708bb27 2688 pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port"
c66ac9db
NB		 2689 " Group: alua/tg_pt_gps/%s\n",
2690 config_item_name(alua_tg_pt_gp_ci));
2691
2692 return alua_tg_pt_gp_cg;
2693}
2694
2695static void target_core_alua_drop_tg_pt_gp(
2696 struct config_group *group,
2697 struct config_item *item)
2698{
2699 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2700 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2701
6708bb27 2702 pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port"
c66ac9db
NB		 2703 " Group: alua/tg_pt_gps/%s, ID: %hu\n",
2704 config_item_name(item), tg_pt_gp->tg_pt_gp_id);
1f6fe7cb
NB		 2705 /*
2706 * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release()
2707 * -> target_core_alua_tg_pt_gp_release().
2708 */
c66ac9db 2709 config_item_put(item);
c66ac9db
NB		 2710}
2711
2712static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = {
2713 .make_group = &target_core_alua_create_tg_pt_gp,
2714 .drop_item = &target_core_alua_drop_tg_pt_gp,
2715};
2716
2717static struct config_item_type target_core_alua_tg_pt_gps_cit = {
2718 .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops,
2719 .ct_owner = THIS_MODULE,
2720};
2721
2722/* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
2723
2724/* Start functions for struct config_item_type target_core_alua_cit */
2725
2726/*
2727 * target_core_alua_cit is a ConfigFS group that lives under
2728 * /sys/kernel/config/target/core/alua. There are default groups
2729 * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to
2730 * target_core_alua_cit in target_core_init_configfs() below.
2731 */
2732static struct config_item_type target_core_alua_cit = {
2733 .ct_item_ops = NULL,
2734 .ct_attrs = NULL,
2735 .ct_owner = THIS_MODULE,
2736};
2737
2738/* End functions for struct config_item_type target_core_alua_cit */
2739
12d23384
NB		 2740/* Start functions for struct config_item_type target_core_stat_cit */
2741
2742static struct config_group *target_core_stat_mkdir(
2743 struct config_group *group,
2744 const char *name)
2745{
2746 return ERR_PTR(-ENOSYS);
2747}
2748
2749static void target_core_stat_rmdir(
2750 struct config_group *group,
2751 struct config_item *item)
2752{
2753 return;
2754}
2755
2756static struct configfs_group_operations target_core_stat_group_ops = {
2757 .make_group = &target_core_stat_mkdir,
2758 .drop_item = &target_core_stat_rmdir,
2759};
2760
2761static struct config_item_type target_core_stat_cit = {
2762 .ct_group_ops = &target_core_stat_group_ops,
2763 .ct_owner = THIS_MODULE,
2764};
2765
2766/* End functions for struct config_item_type target_core_stat_cit */
2767
c66ac9db
NB		 2768/* Start functions for struct config_item_type target_core_hba_cit */
2769
2770static struct config_group *target_core_make_subdev(
2771 struct config_group *group,
2772 const char *name)
2773{
2774 struct t10_alua_tg_pt_gp *tg_pt_gp;
c66ac9db
NB		 2775 struct se_subsystem_api *t;
2776 struct config_item *hba_ci = &group->cg_item;
2777 struct se_hba *hba = item_to_hba(hba_ci);
0fd97ccf 2778 struct se_device *dev;
c66ac9db 2779 struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL;
12d23384
NB		 2780 struct config_group *dev_stat_grp = NULL;
2781 int errno = -ENOMEM, ret;
c66ac9db 2782
12d23384
NB		 2783 ret = mutex_lock_interruptible(&hba->hba_access_mutex);
2784 if (ret)
2785 return ERR_PTR(ret);
c66ac9db
NB		 2786 /*
2787 * Locate the struct se_subsystem_api from parent's struct se_hba.
2788 */
2789 t = hba->transport;
2790
0fd97ccf
CH		 2791 dev = target_alloc_device(hba, name);
2792 if (!dev)
2793 goto out_unlock;
2794
2795 dev_cg = &dev->dev_group;
c66ac9db 2796
13f6a914 2797 dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
c66ac9db 2798 GFP_KERNEL);
6708bb27 2799 if (!dev_cg->default_groups)
0fd97ccf 2800 goto out_free_device;
c66ac9db 2801
0fd97ccf
CH		 2802 config_group_init_type_name(dev_cg, name, &target_core_dev_cit);
2803 config_group_init_type_name(&dev->dev_attrib.da_group, "attrib",
c66ac9db 2804 &target_core_dev_attrib_cit);
0fd97ccf 2805 config_group_init_type_name(&dev->dev_pr_group, "pr",
c66ac9db 2806 &target_core_dev_pr_cit);
0fd97ccf 2807 config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn",
c66ac9db 2808 &target_core_dev_wwn_cit);
0fd97ccf 2809 config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group,
c66ac9db 2810 "alua", &target_core_alua_tg_pt_gps_cit);
0fd97ccf 2811 config_group_init_type_name(&dev->dev_stat_grps.stat_group,
12d23384
NB		 2812 "statistics", &target_core_stat_cit);
2813
0fd97ccf
CH		 2814 dev_cg->default_groups[0] = &dev->dev_attrib.da_group;
2815 dev_cg->default_groups[1] = &dev->dev_pr_group;
2816 dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group;
2817 dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group;
2818 dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group;
12d23384 2819 dev_cg->default_groups[5] = NULL;
c66ac9db 2820 /*
12d23384 2821 * Add core/$HBA/$DEV/alua/default_tg_pt_gp
c66ac9db 2822 */
0fd97ccf 2823 tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1);
6708bb27 2824 if (!tg_pt_gp)
0fd97ccf
CH		 2825 goto out_free_dev_cg_default_groups;
2826 dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
c66ac9db 2827
0fd97ccf 2828 tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group;
13f6a914 2829 tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
c66ac9db 2830 GFP_KERNEL);
6708bb27
AG		 2831 if (!tg_pt_gp_cg->default_groups) {
2832 pr_err("Unable to allocate tg_pt_gp_cg->"
c66ac9db 2833 "default_groups\n");
0fd97ccf 2834 goto out_free_tg_pt_gp;
c66ac9db
NB		 2835 }
2836
2837 config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
2838 "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
2839 tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group;
2840 tg_pt_gp_cg->default_groups[1] = NULL;
12d23384
NB		 2841 /*
2842 * Add core/$HBA/$DEV/statistics/ default groups
2843 */
0fd97ccf 2844 dev_stat_grp = &dev->dev_stat_grps.stat_group;
13f6a914 2845 dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4,
12d23384
NB		 2846 GFP_KERNEL);
2847 if (!dev_stat_grp->default_groups) {
6708bb27 2848 pr_err("Unable to allocate dev_stat_grp->default_groups\n");
0fd97ccf 2849 goto out_free_tg_pt_gp_cg_default_groups;
12d23384 2850 }
0fd97ccf 2851 target_stat_setup_dev_default_groups(dev);
c66ac9db
NB		 2852
2853 mutex_unlock(&hba->hba_access_mutex);
0fd97ccf
CH		 2854 return dev_cg;
2855
2856out_free_tg_pt_gp_cg_default_groups:
2857 kfree(tg_pt_gp_cg->default_groups);
2858out_free_tg_pt_gp:
2859 core_alua_free_tg_pt_gp(tg_pt_gp);
2860out_free_dev_cg_default_groups:
2861 kfree(dev_cg->default_groups);
2862out_free_device:
2863 target_free_device(dev);
2864out_unlock:
c66ac9db 2865 mutex_unlock(&hba->hba_access_mutex);
12d23384 2866 return ERR_PTR(errno);
c66ac9db
NB		 2867}
2868
2869static void target_core_drop_subdev(
2870 struct config_group *group,
2871 struct config_item *item)
2872{
0fd97ccf
CH		 2873 struct config_group *dev_cg = to_config_group(item);
2874 struct se_device *dev =
2875 container_of(dev_cg, struct se_device, dev_group);
c66ac9db 2876 struct se_hba *hba;
c66ac9db 2877 struct config_item *df_item;
0fd97ccf 2878 struct config_group *tg_pt_gp_cg, *dev_stat_grp;
1f6fe7cb 2879 int i;
c66ac9db 2880
0fd97ccf 2881 hba = item_to_hba(&dev->se_hba->hba_group.cg_item);
c66ac9db 2882
1f6fe7cb 2883 mutex_lock(&hba->hba_access_mutex);
c66ac9db 2884
0fd97ccf 2885 dev_stat_grp = &dev->dev_stat_grps.stat_group;
12d23384
NB		 2886 for (i = 0; dev_stat_grp->default_groups[i]; i++) {
2887 df_item = &dev_stat_grp->default_groups[i]->cg_item;
2888 dev_stat_grp->default_groups[i] = NULL;
2889 config_item_put(df_item);
2890 }
2891 kfree(dev_stat_grp->default_groups);
2892
0fd97ccf 2893 tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group;
c66ac9db
NB		 2894 for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) {
2895 df_item = &tg_pt_gp_cg->default_groups[i]->cg_item;
2896 tg_pt_gp_cg->default_groups[i] = NULL;
2897 config_item_put(df_item);
2898 }
2899 kfree(tg_pt_gp_cg->default_groups);
1f6fe7cb
NB		 2900 /*
2901 * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp
2902 * directly from target_core_alua_tg_pt_gp_release().
2903 */
0fd97ccf 2904 dev->t10_alua.default_tg_pt_gp = NULL;
c66ac9db 2905
c66ac9db
NB		 2906 for (i = 0; dev_cg->default_groups[i]; i++) {
2907 df_item = &dev_cg->default_groups[i]->cg_item;
2908 dev_cg->default_groups[i] = NULL;
2909 config_item_put(df_item);
2910 }
c66ac9db 2911 /*
0fd97ccf 2912 * se_dev is released from target_core_dev_item_ops->release()
c66ac9db 2913 */
1f6fe7cb 2914 config_item_put(item);
c66ac9db 2915 mutex_unlock(&hba->hba_access_mutex);
c66ac9db
NB		 2916}
2917
2918static struct configfs_group_operations target_core_hba_group_ops = {
2919 .make_group = target_core_make_subdev,
2920 .drop_item = target_core_drop_subdev,
2921};
2922
2923CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba);
2924#define SE_HBA_ATTR(_name, _mode) \
2925static struct target_core_hba_attribute \
2926 target_core_hba_##_name = \
2927 __CONFIGFS_EATTR(_name, _mode, \
2928 target_core_hba_show_attr_##_name, \
2929 target_core_hba_store_attr_##_name);
2930
2931#define SE_HBA_ATTR_RO(_name) \
2932static struct target_core_hba_attribute \
2933 target_core_hba_##_name = \
2934 __CONFIGFS_EATTR_RO(_name, \
2935 target_core_hba_show_attr_##_name);
2936
2937static ssize_t target_core_hba_show_attr_hba_info(
2938 struct se_hba *hba,
2939 char *page)
2940{
2941 return sprintf(page, "HBA Index: %d plugin: %s version: %s\n",
2942 hba->hba_id, hba->transport->name,
2943 TARGET_CORE_CONFIGFS_VERSION);
2944}
2945
2946SE_HBA_ATTR_RO(hba_info);
2947
2948static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba,
2949 char *page)
2950{
2951 int hba_mode = 0;
2952
2953 if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE)
2954 hba_mode = 1;
2955
2956 return sprintf(page, "%d\n", hba_mode);
2957}
2958
2959static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba,
2960 const char *page, size_t count)
2961{
2962 struct se_subsystem_api *transport = hba->transport;
2963 unsigned long mode_flag;
2964 int ret;
2965
2966 if (transport->pmode_enable_hba == NULL)
2967 return -EINVAL;
2968
57103d7f 2969 ret = kstrtoul(page, 0, &mode_flag);
c66ac9db 2970 if (ret < 0) {
6708bb27 2971 pr_err("Unable to extract hba mode flag: %d\n", ret);
57103d7f 2972 return ret;
c66ac9db
NB		 2973 }
2974
0fd97ccf 2975 if (hba->dev_count) {
6708bb27 2976 pr_err("Unable to set hba_mode with active devices\n");
c66ac9db
NB		 2977 return -EINVAL;
2978 }
c66ac9db
NB		 2979
2980 ret = transport->pmode_enable_hba(hba, mode_flag);
2981 if (ret < 0)
2982 return -EINVAL;
2983 if (ret > 0)
2984 hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
2985 else if (ret == 0)
2986 hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
2987
2988 return count;
2989}
2990
2991SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR);
2992
2993CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group);
2994
1f6fe7cb
NB		 2995static void target_core_hba_release(struct config_item *item)
2996{
2997 struct se_hba *hba = container_of(to_config_group(item),
2998 struct se_hba, hba_group);
2999 core_delete_hba(hba);
3000}
3001
c66ac9db
NB		 3002static struct configfs_attribute *target_core_hba_attrs[] = {
3003 &target_core_hba_hba_info.attr,
3004 &target_core_hba_hba_mode.attr,
3005 NULL,
3006};
3007
3008static struct configfs_item_operations target_core_hba_item_ops = {
1f6fe7cb 3009 .release = target_core_hba_release,
c66ac9db
NB		 3010 .show_attribute = target_core_hba_attr_show,
3011 .store_attribute = target_core_hba_attr_store,
3012};
3013
3014static struct config_item_type target_core_hba_cit = {
3015 .ct_item_ops = &target_core_hba_item_ops,
3016 .ct_group_ops = &target_core_hba_group_ops,
3017 .ct_attrs = target_core_hba_attrs,
3018 .ct_owner = THIS_MODULE,
3019};
3020
3021static struct config_group *target_core_call_addhbatotarget(
3022 struct config_group *group,
3023 const char *name)
3024{
3025 char *se_plugin_str, *str, *str2;
3026 struct se_hba *hba;
3027 char buf[TARGET_CORE_NAME_MAX_LEN];
3028 unsigned long plugin_dep_id = 0;
3029 int ret;
3030
3031 memset(buf, 0, TARGET_CORE_NAME_MAX_LEN);
60d645a4 3032 if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) {
6708bb27 3033 pr_err("Passed *name strlen(): %d exceeds"
c66ac9db
NB		 3034 " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name),
3035 TARGET_CORE_NAME_MAX_LEN);
3036 return ERR_PTR(-ENAMETOOLONG);
3037 }
3038 snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name);
3039
3040 str = strstr(buf, "_");
6708bb27
AG		 3041 if (!str) {
3042 pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n");
c66ac9db
NB		 3043 return ERR_PTR(-EINVAL);
3044 }
3045 se_plugin_str = buf;
3046 /*
3047 * Special case for subsystem plugins that have "_" in their names.
3048 * Namely rd_direct and rd_mcp..
3049 */
3050 str2 = strstr(str+1, "_");
6708bb27 3051 if (str2) {
c66ac9db
NB		 3052 *str2 = '\0'; /* Terminate for *se_plugin_str */
3053 str2++; /* Skip to start of plugin dependent ID */
3054 str = str2;
3055 } else {
3056 *str = '\0'; /* Terminate for *se_plugin_str */
3057 str++; /* Skip to start of plugin dependent ID */
3058 }
3059
57103d7f 3060 ret = kstrtoul(str, 0, &plugin_dep_id);
c66ac9db 3061 if (ret < 0) {
57103d7f 3062 pr_err("kstrtoul() returned %d for"
c66ac9db 3063 " plugin_dep_id\n", ret);
57103d7f 3064 return ERR_PTR(ret);
c66ac9db
NB		 3065 }
3066 /*
3067 * Load up TCM subsystem plugins if they have not already been loaded.
3068 */
dbc5623e 3069 transport_subsystem_check_init();
c66ac9db
NB		 3070
3071 hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0);
3072 if (IS_ERR(hba))
3073 return ERR_CAST(hba);
3074
3075 config_group_init_type_name(&hba->hba_group, name,
3076 &target_core_hba_cit);
3077
3078 return &hba->hba_group;
3079}
3080
3081static void target_core_call_delhbafromtarget(
3082 struct config_group *group,
3083 struct config_item *item)
3084{
1f6fe7cb
NB		 3085 /*
3086 * core_delete_hba() is called from target_core_hba_item_ops->release()
3087 * -> target_core_hba_release()
3088 */
c66ac9db 3089 config_item_put(item);
c66ac9db
NB		 3090}
3091
3092static struct configfs_group_operations target_core_group_ops = {
3093 .make_group = target_core_call_addhbatotarget,
3094 .drop_item = target_core_call_delhbafromtarget,
3095};
3096
3097static struct config_item_type target_core_cit = {
3098 .ct_item_ops = NULL,
3099 .ct_group_ops = &target_core_group_ops,
3100 .ct_attrs = NULL,
3101 .ct_owner = THIS_MODULE,
3102};
3103
3104/* Stop functions for struct config_item_type target_core_hba_cit */
3105
54550fab 3106static int __init target_core_init_configfs(void)
c66ac9db
NB		 3107{
3108 struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL;
3109 struct config_group *lu_gp_cg = NULL;
3110 struct configfs_subsystem *subsys;
c66ac9db
NB		 3111 struct t10_alua_lu_gp *lu_gp;
3112 int ret;
3113
6708bb27 3114 pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage"
c66ac9db
NB		 3115 " Engine: %s on %s/%s on "UTS_RELEASE"\n",
3116 TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine);
3117
3118 subsys = target_core_subsystem[0];
3119 config_group_init(&subsys->su_group);
3120 mutex_init(&subsys->su_mutex);
3121
e3d6f909 3122 ret = init_se_kmem_caches();
c66ac9db 3123 if (ret < 0)
e3d6f909 3124 return ret;
c66ac9db
NB		 3125 /*
3126 * Create $CONFIGFS/target/core default group for HBA <-> Storage Object
3127 * and ALUA Logical Unit Group and Target Port Group infrastructure.
3128 */
3129 target_cg = &subsys->su_group;
ab6dae82 3130 target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
c66ac9db 3131 GFP_KERNEL);
6708bb27
AG		 3132 if (!target_cg->default_groups) {
3133 pr_err("Unable to allocate target_cg->default_groups\n");
37bb7899 3134 ret = -ENOMEM;
c66ac9db
NB		 3135 goto out_global;
3136 }
3137
e3d6f909 3138 config_group_init_type_name(&target_core_hbagroup,
c66ac9db 3139 "core", &target_core_cit);
e3d6f909 3140 target_cg->default_groups[0] = &target_core_hbagroup;
c66ac9db
NB		 3141 target_cg->default_groups[1] = NULL;
3142 /*
3143 * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/
3144 */
e3d6f909 3145 hba_cg = &target_core_hbagroup;
13f6a914 3146 hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
c66ac9db 3147 GFP_KERNEL);
6708bb27
AG		 3148 if (!hba_cg->default_groups) {
3149 pr_err("Unable to allocate hba_cg->default_groups\n");
37bb7899 3150 ret = -ENOMEM;
c66ac9db
NB		 3151 goto out_global;
3152 }
e3d6f909 3153 config_group_init_type_name(&alua_group,
c66ac9db 3154 "alua", &target_core_alua_cit);
e3d6f909 3155 hba_cg->default_groups[0] = &alua_group;
c66ac9db
NB		 3156 hba_cg->default_groups[1] = NULL;
3157 /*
3158 * Add ALUA Logical Unit Group and Target Port Group ConfigFS
3159 * groups under /sys/kernel/config/target/core/alua/
3160 */
e3d6f909 3161 alua_cg = &alua_group;
13f6a914 3162 alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
c66ac9db 3163 GFP_KERNEL);
6708bb27
AG		 3164 if (!alua_cg->default_groups) {
3165 pr_err("Unable to allocate alua_cg->default_groups\n");
37bb7899 3166 ret = -ENOMEM;
c66ac9db
NB		 3167 goto out_global;
3168 }
3169
e3d6f909 3170 config_group_init_type_name(&alua_lu_gps_group,
c66ac9db 3171 "lu_gps", &target_core_alua_lu_gps_cit);
e3d6f909 3172 alua_cg->default_groups[0] = &alua_lu_gps_group;
c66ac9db
NB		 3173 alua_cg->default_groups[1] = NULL;
3174 /*
3175 * Add core/alua/lu_gps/default_lu_gp
3176 */
3177 lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1);
37bb7899
PST		 3178 if (IS_ERR(lu_gp)) {
3179 ret = -ENOMEM;
c66ac9db 3180 goto out_global;
37bb7899 3181 }
c66ac9db 3182
e3d6f909 3183 lu_gp_cg = &alua_lu_gps_group;
13f6a914 3184 lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
c66ac9db 3185 GFP_KERNEL);
6708bb27
AG		 3186 if (!lu_gp_cg->default_groups) {
3187 pr_err("Unable to allocate lu_gp_cg->default_groups\n");
37bb7899 3188 ret = -ENOMEM;
c66ac9db
NB		 3189 goto out_global;
3190 }
3191
3192 config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
3193 &target_core_alua_lu_gp_cit);
3194 lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group;
3195 lu_gp_cg->default_groups[1] = NULL;
e3d6f909 3196 default_lu_gp = lu_gp;
c66ac9db
NB		 3197 /*
3198 * Register the target_core_mod subsystem with configfs.
3199 */
3200 ret = configfs_register_subsystem(subsys);
3201 if (ret < 0) {
6708bb27 3202 pr_err("Error %d while registering subsystem %s\n",
c66ac9db
NB		 3203 ret, subsys->su_group.cg_item.ci_namebuf);
3204 goto out_global;
3205 }
6708bb27 3206 pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric"
c66ac9db
NB		 3207 " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s"
3208 " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine);
3209 /*
3210 * Register built-in RAMDISK subsystem logic for virtual LUN 0
3211 */
3212 ret = rd_module_init();
3213 if (ret < 0)
3214 goto out;
3215
0d0f9dfb
RD		 3216 ret = core_dev_setup_virtual_lun0();
3217 if (ret < 0)
c66ac9db
NB		 3218 goto out;
3219
f99715ac
NB		 3220 ret = target_xcopy_setup_pt();
3221 if (ret < 0)
3222 goto out;
3223
c66ac9db
NB		 3224 return 0;
3225
3226out:
3227 configfs_unregister_subsystem(subsys);
c66ac9db
NB		 3228 core_dev_release_virtual_lun0();
3229 rd_module_exit();
3230out_global:
e3d6f909
AG		 3231 if (default_lu_gp) {
3232 core_alua_free_lu_gp(default_lu_gp);
3233 default_lu_gp = NULL;
c66ac9db
NB		 3234 }
3235 if (lu_gp_cg)
3236 kfree(lu_gp_cg->default_groups);
3237 if (alua_cg)
3238 kfree(alua_cg->default_groups);
3239 if (hba_cg)
3240 kfree(hba_cg->default_groups);
3241 kfree(target_cg->default_groups);
e3d6f909
AG		 3242 release_se_kmem_caches();
3243 return ret;
c66ac9db
NB		 3244}
3245
54550fab 3246static void __exit target_core_exit_configfs(void)
c66ac9db
NB		 3247{
3248 struct configfs_subsystem *subsys;
3249 struct config_group *hba_cg, *alua_cg, *lu_gp_cg;
3250 struct config_item *item;
3251 int i;
3252
c66ac9db
NB		 3253 subsys = target_core_subsystem[0];
3254
e3d6f909 3255 lu_gp_cg = &alua_lu_gps_group;
c66ac9db
NB		 3256 for (i = 0; lu_gp_cg->default_groups[i]; i++) {
3257 item = &lu_gp_cg->default_groups[i]->cg_item;
3258 lu_gp_cg->default_groups[i] = NULL;
3259 config_item_put(item);
3260 }
3261 kfree(lu_gp_cg->default_groups);
7c2bf6e9 3262 lu_gp_cg->default_groups = NULL;
c66ac9db 3263
e3d6f909 3264 alua_cg = &alua_group;
c66ac9db
NB		 3265 for (i = 0; alua_cg->default_groups[i]; i++) {
3266 item = &alua_cg->default_groups[i]->cg_item;
3267 alua_cg->default_groups[i] = NULL;
3268 config_item_put(item);
3269 }
3270 kfree(alua_cg->default_groups);
7c2bf6e9 3271 alua_cg->default_groups = NULL;
c66ac9db 3272
e3d6f909 3273 hba_cg = &target_core_hbagroup;
c66ac9db
NB		 3274 for (i = 0; hba_cg->default_groups[i]; i++) {
3275 item = &hba_cg->default_groups[i]->cg_item;
3276 hba_cg->default_groups[i] = NULL;
3277 config_item_put(item);
3278 }
3279 kfree(hba_cg->default_groups);
7c2bf6e9
NB		 3280 hba_cg->default_groups = NULL;
3281 /*
3282 * We expect subsys->su_group.default_groups to be released
3283 * by configfs subsystem provider logic..
3284 */
3285 configfs_unregister_subsystem(subsys);
c66ac9db
NB		 3286 kfree(subsys->su_group.default_groups);
3287
e3d6f909
AG		 3288 core_alua_free_lu_gp(default_lu_gp);
3289 default_lu_gp = NULL;
7c2bf6e9 3290
6708bb27 3291 pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric"
c66ac9db
NB		 3292 " Infrastructure\n");
3293
c66ac9db
NB		 3294 core_dev_release_virtual_lun0();
3295 rd_module_exit();
f99715ac 3296 target_xcopy_release_pt();
e3d6f909 3297 release_se_kmem_caches();
c66ac9db
NB		 3298}
3299
3300MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS");
3301MODULE_AUTHOR("nab@Linux-iSCSI.org");
3302MODULE_LICENSE("GPL");
3303
3304module_init(target_core_init_configfs);
3305module_exit(target_core_exit_configfs);
Linux kernel - Deliverables
This page took 0.362764 seconds and 5 git commands to generate.