Commit | Line | Data |
---|---|---|
c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_configfs.c | |
3 | * | |
4 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
5 | * | |
4c76251e | 6 | * (c) Copyright 2008-2013 Datera, Inc. |
c66ac9db NB |
7 | * |
8 | * Nicholas A. Bellinger <nab@kernel.org> | |
9 | * | |
10 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | ****************************************************************************/ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
c66ac9db NB |
25 | #include <generated/utsrelease.h> |
26 | #include <linux/utsname.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/fs.h> | |
29 | #include <linux/namei.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/unistd.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/parser.h> | |
36 | #include <linux/syscalls.h> | |
37 | #include <linux/configfs.h> | |
e3d6f909 | 38 | #include <linux/spinlock.h> |
c66ac9db NB |
39 | |
40 | #include <target/target_core_base.h> | |
c4795fb2 CH |
41 | #include <target/target_core_backend.h> |
42 | #include <target/target_core_fabric.h> | |
c66ac9db | 43 | |
e26d99ae | 44 | #include "target_core_internal.h" |
c66ac9db | 45 | #include "target_core_alua.h" |
c66ac9db NB |
46 | #include "target_core_pr.h" |
47 | #include "target_core_rd.h" | |
f99715ac | 48 | #include "target_core_xcopy.h" |
c66ac9db | 49 | |
73112edc | 50 | #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ |
0a06d430 | 51 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ |
73112edc | 52 | { \ |
0a06d430 | 53 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ |
73112edc NB |
54 | \ |
55 | cit->ct_item_ops = _item_ops; \ | |
56 | cit->ct_group_ops = _group_ops; \ | |
57 | cit->ct_attrs = _attrs; \ | |
0a06d430 CH |
58 | cit->ct_owner = tb->ops->owner; \ |
59 | pr_debug("Setup generic %s\n", __stringify(_name)); \ | |
60 | } | |
61 | ||
62 | #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ | |
63 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ | |
64 | { \ | |
65 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ | |
66 | \ | |
67 | cit->ct_item_ops = _item_ops; \ | |
68 | cit->ct_group_ops = _group_ops; \ | |
69 | cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ | |
70 | cit->ct_owner = tb->ops->owner; \ | |
73112edc NB |
71 | pr_debug("Setup generic %s\n", __stringify(_name)); \ |
72 | } | |
73 | ||
e3d6f909 AG |
74 | extern struct t10_alua_lu_gp *default_lu_gp; |
75 | ||
d0f474e5 RD |
76 | static LIST_HEAD(g_tf_list); |
77 | static DEFINE_MUTEX(g_tf_lock); | |
c66ac9db | 78 | |
e3d6f909 AG |
79 | static struct config_group target_core_hbagroup; |
80 | static struct config_group alua_group; | |
81 | static struct config_group alua_lu_gps_group; | |
82 | ||
c66ac9db NB |
83 | static inline struct se_hba * |
84 | item_to_hba(struct config_item *item) | |
85 | { | |
86 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
87 | } | |
88 | ||
89 | /* | |
90 | * Attributes for /sys/kernel/config/target/ | |
91 | */ | |
2eafd729 CH |
92 | static ssize_t target_core_item_version_show(struct config_item *item, |
93 | char *page) | |
c66ac9db NB |
94 | { |
95 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
ce8dd25d | 96 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION, |
c66ac9db NB |
97 | utsname()->sysname, utsname()->machine); |
98 | } | |
99 | ||
2eafd729 | 100 | CONFIGFS_ATTR_RO(target_core_item_, version); |
c66ac9db | 101 | |
a96e9783 LD |
102 | char db_root[DB_ROOT_LEN] = DB_ROOT_DEFAULT; |
103 | static char db_root_stage[DB_ROOT_LEN]; | |
104 | ||
105 | static ssize_t target_core_item_dbroot_show(struct config_item *item, | |
106 | char *page) | |
107 | { | |
108 | return sprintf(page, "%s\n", db_root); | |
109 | } | |
110 | ||
111 | static ssize_t target_core_item_dbroot_store(struct config_item *item, | |
112 | const char *page, size_t count) | |
113 | { | |
114 | ssize_t read_bytes; | |
115 | struct file *fp; | |
116 | ||
117 | mutex_lock(&g_tf_lock); | |
118 | if (!list_empty(&g_tf_list)) { | |
119 | mutex_unlock(&g_tf_lock); | |
120 | pr_err("db_root: cannot be changed: target drivers registered"); | |
121 | return -EINVAL; | |
122 | } | |
123 | ||
124 | if (count > (DB_ROOT_LEN - 1)) { | |
125 | mutex_unlock(&g_tf_lock); | |
126 | pr_err("db_root: count %d exceeds DB_ROOT_LEN-1: %u\n", | |
127 | (int)count, DB_ROOT_LEN - 1); | |
128 | return -EINVAL; | |
129 | } | |
130 | ||
131 | read_bytes = snprintf(db_root_stage, DB_ROOT_LEN, "%s", page); | |
132 | if (!read_bytes) { | |
133 | mutex_unlock(&g_tf_lock); | |
134 | return -EINVAL; | |
135 | } | |
136 | if (db_root_stage[read_bytes - 1] == '\n') | |
137 | db_root_stage[read_bytes - 1] = '\0'; | |
138 | ||
139 | /* validate new db root before accepting it */ | |
140 | fp = filp_open(db_root_stage, O_RDONLY, 0); | |
141 | if (IS_ERR(fp)) { | |
142 | mutex_unlock(&g_tf_lock); | |
143 | pr_err("db_root: cannot open: %s\n", db_root_stage); | |
144 | return -EINVAL; | |
145 | } | |
45063097 | 146 | if (!S_ISDIR(file_inode(fp)->i_mode)) { |
8cc3bb07 | 147 | filp_close(fp, NULL); |
a96e9783 LD |
148 | mutex_unlock(&g_tf_lock); |
149 | pr_err("db_root: not a directory: %s\n", db_root_stage); | |
150 | return -EINVAL; | |
151 | } | |
8cc3bb07 | 152 | filp_close(fp, NULL); |
a96e9783 LD |
153 | |
154 | strncpy(db_root, db_root_stage, read_bytes); | |
155 | ||
156 | mutex_unlock(&g_tf_lock); | |
157 | ||
78a6295c LD |
158 | pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); |
159 | ||
a96e9783 LD |
160 | return read_bytes; |
161 | } | |
162 | ||
163 | CONFIGFS_ATTR(target_core_item_, dbroot); | |
164 | ||
c66ac9db NB |
165 | static struct target_fabric_configfs *target_core_get_fabric( |
166 | const char *name) | |
167 | { | |
168 | struct target_fabric_configfs *tf; | |
169 | ||
6708bb27 | 170 | if (!name) |
c66ac9db NB |
171 | return NULL; |
172 | ||
173 | mutex_lock(&g_tf_lock); | |
174 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
0dc2e8d1 | 175 | if (!strcmp(tf->tf_ops->name, name)) { |
c66ac9db NB |
176 | atomic_inc(&tf->tf_access_cnt); |
177 | mutex_unlock(&g_tf_lock); | |
178 | return tf; | |
179 | } | |
180 | } | |
181 | mutex_unlock(&g_tf_lock); | |
182 | ||
183 | return NULL; | |
184 | } | |
185 | ||
186 | /* | |
187 | * Called from struct target_core_group_ops->make_group() | |
188 | */ | |
189 | static struct config_group *target_core_register_fabric( | |
190 | struct config_group *group, | |
191 | const char *name) | |
192 | { | |
193 | struct target_fabric_configfs *tf; | |
194 | int ret; | |
195 | ||
6708bb27 | 196 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 197 | " %s\n", group, name); |
e7b7af6e RD |
198 | |
199 | tf = target_core_get_fabric(name); | |
200 | if (!tf) { | |
62554910 NB |
201 | pr_debug("target_core_register_fabric() trying autoload for %s\n", |
202 | name); | |
e7b7af6e | 203 | |
c66ac9db | 204 | /* |
e7b7af6e RD |
205 | * Below are some hardcoded request_module() calls to automatically |
206 | * local fabric modules when the following is called: | |
c66ac9db | 207 | * |
e7b7af6e | 208 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 209 | * |
e7b7af6e RD |
210 | * Note that this does not limit which TCM fabric module can be |
211 | * registered, but simply provids auto loading logic for modules with | |
212 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 213 | */ |
e7b7af6e RD |
214 | |
215 | if (!strncmp(name, "iscsi", 5)) { | |
216 | /* | |
217 | * Automatically load the LIO Target fabric module when the | |
218 | * following is called: | |
219 | * | |
220 | * mkdir -p $CONFIGFS/target/iscsi | |
221 | */ | |
222 | ret = request_module("iscsi_target_mod"); | |
223 | if (ret < 0) { | |
62554910 NB |
224 | pr_debug("request_module() failed for" |
225 | " iscsi_target_mod.ko: %d\n", ret); | |
e7b7af6e RD |
226 | return ERR_PTR(-EINVAL); |
227 | } | |
228 | } else if (!strncmp(name, "loopback", 8)) { | |
229 | /* | |
230 | * Automatically load the tcm_loop fabric module when the | |
231 | * following is called: | |
232 | * | |
233 | * mkdir -p $CONFIGFS/target/loopback | |
234 | */ | |
235 | ret = request_module("tcm_loop"); | |
236 | if (ret < 0) { | |
62554910 NB |
237 | pr_debug("request_module() failed for" |
238 | " tcm_loop.ko: %d\n", ret); | |
e7b7af6e RD |
239 | return ERR_PTR(-EINVAL); |
240 | } | |
c66ac9db | 241 | } |
e7b7af6e RD |
242 | |
243 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
244 | } |
245 | ||
6708bb27 | 246 | if (!tf) { |
62554910 NB |
247 | pr_debug("target_core_get_fabric() failed for %s\n", |
248 | name); | |
c66ac9db NB |
249 | return ERR_PTR(-EINVAL); |
250 | } | |
6708bb27 | 251 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
0dc2e8d1 | 252 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
253 | /* |
254 | * On a successful target_core_get_fabric() look, the returned | |
255 | * struct target_fabric_configfs *tf will contain a usage reference. | |
256 | */ | |
6708bb27 | 257 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
968ebe75 | 258 | &tf->tf_wwn_cit); |
c66ac9db | 259 | |
968ebe75 | 260 | config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); |
1ae1602d | 261 | |
c66ac9db | 262 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
968ebe75 | 263 | &tf->tf_discovery_cit); |
1ae1602d | 264 | configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group); |
c66ac9db | 265 | |
6f3bf5a2 BVA |
266 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric: %s\n", |
267 | config_item_name(&tf->tf_group.cg_item)); | |
c66ac9db NB |
268 | return &tf->tf_group; |
269 | } | |
270 | ||
271 | /* | |
272 | * Called from struct target_core_group_ops->drop_item() | |
273 | */ | |
274 | static void target_core_deregister_fabric( | |
275 | struct config_group *group, | |
276 | struct config_item *item) | |
277 | { | |
278 | struct target_fabric_configfs *tf = container_of( | |
279 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
c66ac9db | 280 | |
6708bb27 | 281 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
282 | " tf list\n", config_item_name(item)); |
283 | ||
6708bb27 | 284 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
0dc2e8d1 | 285 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
286 | atomic_dec(&tf->tf_access_cnt); |
287 | ||
6708bb27 | 288 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
289 | " %s\n", config_item_name(item)); |
290 | ||
1ae1602d | 291 | configfs_remove_default_groups(&tf->tf_group); |
c66ac9db NB |
292 | config_item_put(item); |
293 | } | |
294 | ||
295 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
296 | .make_group = &target_core_register_fabric, | |
297 | .drop_item = &target_core_deregister_fabric, | |
298 | }; | |
299 | ||
300 | /* | |
301 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
302 | */ | |
303 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
304 | &target_core_item_attr_version, | |
a96e9783 | 305 | &target_core_item_attr_dbroot, |
c66ac9db NB |
306 | NULL, |
307 | }; | |
308 | ||
309 | /* | |
310 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
311 | */ | |
ece550b5 | 312 | static const struct config_item_type target_core_fabrics_item = { |
c66ac9db NB |
313 | .ct_group_ops = &target_core_fabric_group_ops, |
314 | .ct_attrs = target_core_fabric_item_attrs, | |
315 | .ct_owner = THIS_MODULE, | |
316 | }; | |
317 | ||
318 | static struct configfs_subsystem target_core_fabrics = { | |
319 | .su_group = { | |
320 | .cg_item = { | |
321 | .ci_namebuf = "target", | |
322 | .ci_type = &target_core_fabrics_item, | |
323 | }, | |
324 | }, | |
325 | }; | |
326 | ||
d588cf8f CH |
327 | int target_depend_item(struct config_item *item) |
328 | { | |
329 | return configfs_depend_item(&target_core_fabrics, item); | |
330 | } | |
331 | EXPORT_SYMBOL(target_depend_item); | |
332 | ||
333 | void target_undepend_item(struct config_item *item) | |
334 | { | |
9a9e3415 | 335 | return configfs_undepend_item(item); |
d588cf8f CH |
336 | } |
337 | EXPORT_SYMBOL(target_undepend_item); | |
c66ac9db NB |
338 | |
339 | /*############################################################################## | |
340 | // Start functions called by external Target Fabrics Modules | |
341 | //############################################################################*/ | |
342 | ||
9ac8928e | 343 | static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) |
c66ac9db | 344 | { |
9ac8928e CH |
345 | if (!tfo->name) { |
346 | pr_err("Missing tfo->name\n"); | |
347 | return -EINVAL; | |
c66ac9db | 348 | } |
9ac8928e | 349 | if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 350 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
9ac8928e CH |
351 | "_NAME_SIZE\n", tfo->name); |
352 | return -EINVAL; | |
c66ac9db | 353 | } |
6708bb27 AG |
354 | if (!tfo->get_fabric_name) { |
355 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
356 | return -EINVAL; |
357 | } | |
6708bb27 AG |
358 | if (!tfo->tpg_get_wwn) { |
359 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
360 | return -EINVAL; |
361 | } | |
6708bb27 AG |
362 | if (!tfo->tpg_get_tag) { |
363 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
364 | return -EINVAL; |
365 | } | |
6708bb27 AG |
366 | if (!tfo->tpg_check_demo_mode) { |
367 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
368 | return -EINVAL; |
369 | } | |
6708bb27 AG |
370 | if (!tfo->tpg_check_demo_mode_cache) { |
371 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
372 | return -EINVAL; |
373 | } | |
6708bb27 AG |
374 | if (!tfo->tpg_check_demo_mode_write_protect) { |
375 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
376 | return -EINVAL; |
377 | } | |
6708bb27 AG |
378 | if (!tfo->tpg_check_prod_mode_write_protect) { |
379 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
380 | return -EINVAL; |
381 | } | |
6708bb27 AG |
382 | if (!tfo->tpg_get_inst_index) { |
383 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
384 | return -EINVAL; |
385 | } | |
35462975 | 386 | if (!tfo->release_cmd) { |
6708bb27 | 387 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
388 | return -EINVAL; |
389 | } | |
6708bb27 AG |
390 | if (!tfo->sess_get_index) { |
391 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
392 | return -EINVAL; |
393 | } | |
6708bb27 AG |
394 | if (!tfo->write_pending) { |
395 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
396 | return -EINVAL; |
397 | } | |
6708bb27 AG |
398 | if (!tfo->write_pending_status) { |
399 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
400 | return -EINVAL; |
401 | } | |
6708bb27 AG |
402 | if (!tfo->set_default_node_attributes) { |
403 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
404 | return -EINVAL; |
405 | } | |
6708bb27 AG |
406 | if (!tfo->get_cmd_state) { |
407 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
408 | return -EINVAL; |
409 | } | |
6708bb27 AG |
410 | if (!tfo->queue_data_in) { |
411 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
412 | return -EINVAL; |
413 | } | |
6708bb27 AG |
414 | if (!tfo->queue_status) { |
415 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
416 | return -EINVAL; |
417 | } | |
6708bb27 AG |
418 | if (!tfo->queue_tm_rsp) { |
419 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
420 | return -EINVAL; |
421 | } | |
131e6abc NB |
422 | if (!tfo->aborted_task) { |
423 | pr_err("Missing tfo->aborted_task()\n"); | |
424 | return -EINVAL; | |
425 | } | |
9c28ca4f NB |
426 | if (!tfo->check_stop_free) { |
427 | pr_err("Missing tfo->check_stop_free()\n"); | |
428 | return -EINVAL; | |
429 | } | |
c66ac9db NB |
430 | /* |
431 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
432 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
433 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
434 | */ | |
6708bb27 AG |
435 | if (!tfo->fabric_make_wwn) { |
436 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
437 | return -EINVAL; |
438 | } | |
6708bb27 AG |
439 | if (!tfo->fabric_drop_wwn) { |
440 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
441 | return -EINVAL; |
442 | } | |
6708bb27 AG |
443 | if (!tfo->fabric_make_tpg) { |
444 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
445 | return -EINVAL; |
446 | } | |
6708bb27 AG |
447 | if (!tfo->fabric_drop_tpg) { |
448 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
449 | return -EINVAL; |
450 | } | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
9ac8928e | 455 | int target_register_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 456 | { |
9ac8928e | 457 | struct target_fabric_configfs *tf; |
c66ac9db NB |
458 | int ret; |
459 | ||
9ac8928e CH |
460 | ret = target_fabric_tf_ops_check(fo); |
461 | if (ret) | |
462 | return ret; | |
463 | ||
464 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 465 | if (!tf) { |
9ac8928e CH |
466 | pr_err("%s: could not allocate memory!\n", __func__); |
467 | return -ENOMEM; | |
c66ac9db | 468 | } |
c66ac9db | 469 | |
9ac8928e CH |
470 | INIT_LIST_HEAD(&tf->tf_list); |
471 | atomic_set(&tf->tf_access_cnt, 0); | |
ef0caf8d | 472 | tf->tf_ops = fo; |
9ac8928e CH |
473 | target_fabric_setup_cits(tf); |
474 | ||
475 | mutex_lock(&g_tf_lock); | |
476 | list_add_tail(&tf->tf_list, &g_tf_list); | |
477 | mutex_unlock(&g_tf_lock); | |
478 | ||
c66ac9db NB |
479 | return 0; |
480 | } | |
9ac8928e | 481 | EXPORT_SYMBOL(target_register_template); |
c66ac9db | 482 | |
9ac8928e | 483 | void target_unregister_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 484 | { |
9ac8928e | 485 | struct target_fabric_configfs *t; |
c66ac9db | 486 | |
c66ac9db | 487 | mutex_lock(&g_tf_lock); |
9ac8928e | 488 | list_for_each_entry(t, &g_tf_list, tf_list) { |
0dc2e8d1 | 489 | if (!strcmp(t->tf_ops->name, fo->name)) { |
9ac8928e CH |
490 | BUG_ON(atomic_read(&t->tf_access_cnt)); |
491 | list_del(&t->tf_list); | |
94509182 NB |
492 | mutex_unlock(&g_tf_lock); |
493 | /* | |
494 | * Wait for any outstanding fabric se_deve_entry->rcu_head | |
495 | * callbacks to complete post kfree_rcu(), before allowing | |
496 | * fabric driver unload of TFO->module to proceed. | |
497 | */ | |
498 | rcu_barrier(); | |
9ac8928e | 499 | kfree(t); |
94509182 | 500 | return; |
9ac8928e | 501 | } |
c66ac9db | 502 | } |
c66ac9db | 503 | mutex_unlock(&g_tf_lock); |
c66ac9db | 504 | } |
9ac8928e | 505 | EXPORT_SYMBOL(target_unregister_template); |
c66ac9db NB |
506 | |
507 | /*############################################################################## | |
508 | // Stop functions called by external Target Fabrics Modules | |
509 | //############################################################################*/ | |
510 | ||
2eafd729 CH |
511 | static inline struct se_dev_attrib *to_attrib(struct config_item *item) |
512 | { | |
513 | return container_of(to_config_group(item), struct se_dev_attrib, | |
514 | da_group); | |
515 | } | |
516 | ||
f79a897e | 517 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
2eafd729 CH |
518 | #define DEF_CONFIGFS_ATTRIB_SHOW(_name) \ |
519 | static ssize_t _name##_show(struct config_item *item, char *page) \ | |
5873c4d1 | 520 | { \ |
2eafd729 CH |
521 | return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \ |
522 | } | |
523 | ||
524 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias); | |
525 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo); | |
526 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write); | |
527 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read); | |
528 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache); | |
529 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl); | |
530 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas); | |
531 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); | |
532 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); | |
533 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); | |
534 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); | |
535 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); | |
536 | DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); | |
537 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_format); | |
056e8924 | 538 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify); |
2eafd729 CH |
539 | DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); |
540 | DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); | |
541 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord); | |
542 | DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl); | |
543 | DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size); | |
544 | DEF_CONFIGFS_ATTRIB_SHOW(block_size); | |
545 | DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors); | |
546 | DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors); | |
547 | DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth); | |
548 | DEF_CONFIGFS_ATTRIB_SHOW(queue_depth); | |
549 | DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count); | |
550 | DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count); | |
551 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity); | |
552 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment); | |
e6f41633 | 553 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data); |
2eafd729 CH |
554 | DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); |
555 | ||
556 | #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ | |
557 | static ssize_t _name##_store(struct config_item *item, const char *page,\ | |
3effdb90 | 558 | size_t count) \ |
5873c4d1 | 559 | { \ |
2eafd729 | 560 | struct se_dev_attrib *da = to_attrib(item); \ |
3effdb90 | 561 | u32 val; \ |
5873c4d1 CH |
562 | int ret; \ |
563 | \ | |
3effdb90 CH |
564 | ret = kstrtou32(page, 0, &val); \ |
565 | if (ret < 0) \ | |
566 | return ret; \ | |
567 | da->_name = val; \ | |
568 | return count; \ | |
569 | } | |
570 | ||
2eafd729 CH |
571 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count); |
572 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count); | |
573 | DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity); | |
574 | DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment); | |
575 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len); | |
3effdb90 | 576 | |
2eafd729 CH |
577 | #define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \ |
578 | static ssize_t _name##_store(struct config_item *item, const char *page, \ | |
3effdb90 CH |
579 | size_t count) \ |
580 | { \ | |
2eafd729 | 581 | struct se_dev_attrib *da = to_attrib(item); \ |
3effdb90 CH |
582 | bool flag; \ |
583 | int ret; \ | |
5873c4d1 | 584 | \ |
3effdb90 CH |
585 | ret = strtobool(page, &flag); \ |
586 | if (ret < 0) \ | |
587 | return ret; \ | |
588 | da->_name = flag; \ | |
589 | return count; \ | |
590 | } | |
591 | ||
2eafd729 CH |
592 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); |
593 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); | |
594 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); | |
595 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); | |
596 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); | |
3effdb90 | 597 | |
2eafd729 CH |
598 | #define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \ |
599 | static ssize_t _name##_store(struct config_item *item, const char *page,\ | |
3effdb90 CH |
600 | size_t count) \ |
601 | { \ | |
602 | printk_once(KERN_WARNING \ | |
234bdbc4 CVB |
603 | "ignoring deprecated %s attribute\n", \ |
604 | __stringify(_name)); \ | |
3effdb90 CH |
605 | return count; \ |
606 | } | |
607 | ||
2eafd729 CH |
608 | DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo); |
609 | DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read); | |
3effdb90 CH |
610 | |
611 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) | |
612 | { | |
613 | const char *configname; | |
614 | ||
615 | configname = config_item_name(&dev->dev_group.cg_item); | |
616 | if (strlen(configname) >= 16) { | |
617 | pr_warn("dev[%p]: Backstore name '%s' is too long for " | |
618 | "INQUIRY_MODEL, truncating to 16 bytes\n", dev, | |
619 | configname); | |
620 | } | |
621 | snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); | |
622 | } | |
623 | ||
2eafd729 | 624 | static ssize_t emulate_model_alias_store(struct config_item *item, |
3effdb90 CH |
625 | const char *page, size_t count) |
626 | { | |
2eafd729 | 627 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
628 | struct se_device *dev = da->da_dev; |
629 | bool flag; | |
630 | int ret; | |
631 | ||
632 | if (dev->export_count) { | |
633 | pr_err("dev[%p]: Unable to change model alias" | |
634 | " while export_count is %d\n", | |
635 | dev, dev->export_count); | |
636 | return -EINVAL; | |
637 | } | |
638 | ||
639 | ret = strtobool(page, &flag); | |
640 | if (ret < 0) | |
641 | return ret; | |
642 | ||
643 | if (flag) { | |
644 | dev_set_t10_wwn_model_alias(dev); | |
645 | } else { | |
646 | strncpy(&dev->t10_wwn.model[0], | |
647 | dev->transport->inquiry_prod, 16); | |
648 | } | |
649 | da->emulate_model_alias = flag; | |
650 | return count; | |
651 | } | |
652 | ||
2eafd729 | 653 | static ssize_t emulate_write_cache_store(struct config_item *item, |
3effdb90 CH |
654 | const char *page, size_t count) |
655 | { | |
2eafd729 | 656 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
657 | bool flag; |
658 | int ret; | |
659 | ||
660 | ret = strtobool(page, &flag); | |
661 | if (ret < 0) | |
662 | return ret; | |
663 | ||
664 | if (flag && da->da_dev->transport->get_write_cache) { | |
665 | pr_err("emulate_write_cache not supported for this device\n"); | |
666 | return -EINVAL; | |
667 | } | |
668 | ||
669 | da->emulate_write_cache = flag; | |
670 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", | |
671 | da->da_dev, flag); | |
672 | return count; | |
673 | } | |
674 | ||
2eafd729 | 675 | static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item, |
3effdb90 CH |
676 | const char *page, size_t count) |
677 | { | |
2eafd729 | 678 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
679 | u32 val; |
680 | int ret; | |
681 | ||
682 | ret = kstrtou32(page, 0, &val); | |
683 | if (ret < 0) | |
684 | return ret; | |
685 | ||
686 | if (val != 0 && val != 1 && val != 2) { | |
687 | pr_err("Illegal value %d\n", val); | |
688 | return -EINVAL; | |
689 | } | |
690 | ||
691 | if (da->da_dev->export_count) { | |
692 | pr_err("dev[%p]: Unable to change SE Device" | |
693 | " UA_INTRLCK_CTRL while export_count is %d\n", | |
694 | da->da_dev, da->da_dev->export_count); | |
695 | return -EINVAL; | |
696 | } | |
697 | da->emulate_ua_intlck_ctrl = val; | |
698 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", | |
699 | da->da_dev, val); | |
700 | return count; | |
701 | } | |
702 | ||
2eafd729 | 703 | static ssize_t emulate_tas_store(struct config_item *item, |
3effdb90 CH |
704 | const char *page, size_t count) |
705 | { | |
2eafd729 | 706 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
707 | bool flag; |
708 | int ret; | |
709 | ||
710 | ret = strtobool(page, &flag); | |
711 | if (ret < 0) | |
712 | return ret; | |
713 | ||
714 | if (da->da_dev->export_count) { | |
715 | pr_err("dev[%p]: Unable to change SE Device TAS while" | |
716 | " export_count is %d\n", | |
717 | da->da_dev, da->da_dev->export_count); | |
718 | return -EINVAL; | |
719 | } | |
720 | da->emulate_tas = flag; | |
721 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", | |
722 | da->da_dev, flag ? "Enabled" : "Disabled"); | |
723 | ||
724 | return count; | |
725 | } | |
726 | ||
2eafd729 | 727 | static ssize_t emulate_tpu_store(struct config_item *item, |
3effdb90 CH |
728 | const char *page, size_t count) |
729 | { | |
2eafd729 | 730 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
731 | bool flag; |
732 | int ret; | |
733 | ||
734 | ret = strtobool(page, &flag); | |
735 | if (ret < 0) | |
736 | return ret; | |
737 | ||
738 | /* | |
739 | * We expect this value to be non-zero when generic Block Layer | |
740 | * Discard supported is detected iblock_create_virtdevice(). | |
741 | */ | |
742 | if (flag && !da->max_unmap_block_desc_count) { | |
743 | pr_err("Generic Block Discard not supported\n"); | |
744 | return -ENOSYS; | |
745 | } | |
746 | ||
747 | da->emulate_tpu = flag; | |
748 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", | |
749 | da->da_dev, flag); | |
750 | return count; | |
751 | } | |
752 | ||
2eafd729 | 753 | static ssize_t emulate_tpws_store(struct config_item *item, |
3effdb90 CH |
754 | const char *page, size_t count) |
755 | { | |
2eafd729 | 756 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
757 | bool flag; |
758 | int ret; | |
759 | ||
760 | ret = strtobool(page, &flag); | |
761 | if (ret < 0) | |
762 | return ret; | |
763 | ||
764 | /* | |
765 | * We expect this value to be non-zero when generic Block Layer | |
766 | * Discard supported is detected iblock_create_virtdevice(). | |
767 | */ | |
768 | if (flag && !da->max_unmap_block_desc_count) { | |
769 | pr_err("Generic Block Discard not supported\n"); | |
770 | return -ENOSYS; | |
771 | } | |
772 | ||
773 | da->emulate_tpws = flag; | |
774 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", | |
775 | da->da_dev, flag); | |
776 | return count; | |
777 | } | |
778 | ||
2eafd729 | 779 | static ssize_t pi_prot_type_store(struct config_item *item, |
3effdb90 CH |
780 | const char *page, size_t count) |
781 | { | |
2eafd729 | 782 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
783 | int old_prot = da->pi_prot_type, ret; |
784 | struct se_device *dev = da->da_dev; | |
785 | u32 flag; | |
786 | ||
787 | ret = kstrtou32(page, 0, &flag); | |
788 | if (ret < 0) | |
789 | return ret; | |
790 | ||
791 | if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { | |
792 | pr_err("Illegal value %d for pi_prot_type\n", flag); | |
793 | return -EINVAL; | |
794 | } | |
795 | if (flag == 2) { | |
796 | pr_err("DIF TYPE2 protection currently not supported\n"); | |
797 | return -ENOSYS; | |
798 | } | |
799 | if (da->hw_pi_prot_type) { | |
800 | pr_warn("DIF protection enabled on underlying hardware," | |
801 | " ignoring\n"); | |
802 | return count; | |
803 | } | |
804 | if (!dev->transport->init_prot || !dev->transport->free_prot) { | |
805 | /* 0 is only allowed value for non-supporting backends */ | |
806 | if (flag == 0) | |
bc1a7d6a | 807 | return count; |
3effdb90 CH |
808 | |
809 | pr_err("DIF protection not supported by backend: %s\n", | |
810 | dev->transport->name); | |
811 | return -ENOSYS; | |
812 | } | |
cb0f32e1 | 813 | if (!target_dev_configured(dev)) { |
3effdb90 CH |
814 | pr_err("DIF protection requires device to be configured\n"); |
815 | return -ENODEV; | |
816 | } | |
817 | if (dev->export_count) { | |
818 | pr_err("dev[%p]: Unable to change SE Device PROT type while" | |
819 | " export_count is %d\n", dev, dev->export_count); | |
820 | return -EINVAL; | |
821 | } | |
822 | ||
823 | da->pi_prot_type = flag; | |
824 | ||
825 | if (flag && !old_prot) { | |
826 | ret = dev->transport->init_prot(dev); | |
827 | if (ret) { | |
828 | da->pi_prot_type = old_prot; | |
056e8924 | 829 | da->pi_prot_verify = (bool) da->pi_prot_type; |
3effdb90 CH |
830 | return ret; |
831 | } | |
832 | ||
833 | } else if (!flag && old_prot) { | |
834 | dev->transport->free_prot(dev); | |
835 | } | |
836 | ||
056e8924 | 837 | da->pi_prot_verify = (bool) da->pi_prot_type; |
3effdb90 CH |
838 | pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); |
839 | return count; | |
840 | } | |
841 | ||
2eafd729 | 842 | static ssize_t pi_prot_format_store(struct config_item *item, |
3effdb90 CH |
843 | const char *page, size_t count) |
844 | { | |
2eafd729 | 845 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
846 | struct se_device *dev = da->da_dev; |
847 | bool flag; | |
848 | int ret; | |
849 | ||
850 | ret = strtobool(page, &flag); | |
851 | if (ret < 0) | |
852 | return ret; | |
853 | ||
854 | if (!flag) | |
855 | return count; | |
856 | ||
857 | if (!dev->transport->format_prot) { | |
858 | pr_err("DIF protection format not supported by backend %s\n", | |
859 | dev->transport->name); | |
860 | return -ENOSYS; | |
861 | } | |
cb0f32e1 | 862 | if (!target_dev_configured(dev)) { |
3effdb90 CH |
863 | pr_err("DIF protection format requires device to be configured\n"); |
864 | return -ENODEV; | |
865 | } | |
866 | if (dev->export_count) { | |
867 | pr_err("dev[%p]: Unable to format SE Device PROT type while" | |
868 | " export_count is %d\n", dev, dev->export_count); | |
869 | return -EINVAL; | |
870 | } | |
871 | ||
872 | ret = dev->transport->format_prot(dev); | |
873 | if (ret) | |
874 | return ret; | |
875 | ||
876 | pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); | |
877 | return count; | |
878 | } | |
879 | ||
056e8924 DM |
880 | static ssize_t pi_prot_verify_store(struct config_item *item, |
881 | const char *page, size_t count) | |
882 | { | |
883 | struct se_dev_attrib *da = to_attrib(item); | |
884 | bool flag; | |
885 | int ret; | |
886 | ||
887 | ret = strtobool(page, &flag); | |
888 | if (ret < 0) | |
889 | return ret; | |
890 | ||
891 | if (!flag) { | |
892 | da->pi_prot_verify = flag; | |
893 | return count; | |
894 | } | |
895 | if (da->hw_pi_prot_type) { | |
896 | pr_warn("DIF protection enabled on underlying hardware," | |
897 | " ignoring\n"); | |
898 | return count; | |
899 | } | |
900 | if (!da->pi_prot_type) { | |
901 | pr_warn("DIF protection not supported by backend, ignoring\n"); | |
902 | return count; | |
903 | } | |
904 | da->pi_prot_verify = flag; | |
905 | ||
906 | return count; | |
907 | } | |
908 | ||
2eafd729 | 909 | static ssize_t force_pr_aptpl_store(struct config_item *item, |
3effdb90 CH |
910 | const char *page, size_t count) |
911 | { | |
2eafd729 | 912 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
913 | bool flag; |
914 | int ret; | |
915 | ||
916 | ret = strtobool(page, &flag); | |
917 | if (ret < 0) | |
918 | return ret; | |
919 | if (da->da_dev->export_count) { | |
920 | pr_err("dev[%p]: Unable to set force_pr_aptpl while" | |
921 | " export_count is %d\n", | |
922 | da->da_dev, da->da_dev->export_count); | |
923 | return -EINVAL; | |
924 | } | |
925 | ||
926 | da->force_pr_aptpl = flag; | |
927 | pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); | |
928 | return count; | |
929 | } | |
930 | ||
2eafd729 | 931 | static ssize_t emulate_rest_reord_store(struct config_item *item, |
3effdb90 CH |
932 | const char *page, size_t count) |
933 | { | |
2eafd729 | 934 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
935 | bool flag; |
936 | int ret; | |
937 | ||
938 | ret = strtobool(page, &flag); | |
939 | if (ret < 0) | |
940 | return ret; | |
941 | ||
942 | if (flag != 0) { | |
943 | printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" | |
944 | " reordering not implemented\n", da->da_dev); | |
945 | return -ENOSYS; | |
946 | } | |
947 | da->emulate_rest_reord = flag; | |
948 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", | |
949 | da->da_dev, flag); | |
950 | return count; | |
951 | } | |
952 | ||
e6f41633 JP |
953 | static ssize_t unmap_zeroes_data_store(struct config_item *item, |
954 | const char *page, size_t count) | |
955 | { | |
956 | struct se_dev_attrib *da = to_attrib(item); | |
957 | bool flag; | |
958 | int ret; | |
959 | ||
960 | ret = strtobool(page, &flag); | |
961 | if (ret < 0) | |
962 | return ret; | |
963 | ||
964 | if (da->da_dev->export_count) { | |
965 | pr_err("dev[%p]: Unable to change SE Device" | |
966 | " unmap_zeroes_data while export_count is %d\n", | |
967 | da->da_dev, da->da_dev->export_count); | |
968 | return -EINVAL; | |
969 | } | |
970 | /* | |
971 | * We expect this value to be non-zero when generic Block Layer | |
972 | * Discard supported is detected iblock_configure_device(). | |
973 | */ | |
974 | if (flag && !da->max_unmap_block_desc_count) { | |
975 | pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set" | |
976 | " because max_unmap_block_desc_count is zero\n", | |
977 | da->da_dev); | |
9b3118ce | 978 | return -ENOSYS; |
e6f41633 JP |
979 | } |
980 | da->unmap_zeroes_data = flag; | |
981 | pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n", | |
982 | da->da_dev, flag); | |
2e498f25 | 983 | return count; |
e6f41633 JP |
984 | } |
985 | ||
3effdb90 CH |
986 | /* |
987 | * Note, this can only be called on unexported SE Device Object. | |
988 | */ | |
2eafd729 | 989 | static ssize_t queue_depth_store(struct config_item *item, |
3effdb90 CH |
990 | const char *page, size_t count) |
991 | { | |
2eafd729 | 992 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
993 | struct se_device *dev = da->da_dev; |
994 | u32 val; | |
995 | int ret; | |
996 | ||
997 | ret = kstrtou32(page, 0, &val); | |
998 | if (ret < 0) | |
999 | return ret; | |
1000 | ||
1001 | if (dev->export_count) { | |
1002 | pr_err("dev[%p]: Unable to change SE Device TCQ while" | |
1003 | " export_count is %d\n", | |
1004 | dev, dev->export_count); | |
1005 | return -EINVAL; | |
1006 | } | |
1007 | if (!val) { | |
1008 | pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); | |
1009 | return -EINVAL; | |
1010 | } | |
1011 | ||
1012 | if (val > dev->dev_attrib.queue_depth) { | |
1013 | if (val > dev->dev_attrib.hw_queue_depth) { | |
1014 | pr_err("dev[%p]: Passed queue_depth:" | |
1015 | " %u exceeds TCM/SE_Device MAX" | |
1016 | " TCQ: %u\n", dev, val, | |
1017 | dev->dev_attrib.hw_queue_depth); | |
1018 | return -EINVAL; | |
1019 | } | |
1020 | } | |
1021 | da->queue_depth = dev->queue_depth = val; | |
1022 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); | |
1023 | return count; | |
1024 | } | |
1025 | ||
2eafd729 | 1026 | static ssize_t optimal_sectors_store(struct config_item *item, |
3effdb90 CH |
1027 | const char *page, size_t count) |
1028 | { | |
2eafd729 | 1029 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
1030 | u32 val; |
1031 | int ret; | |
1032 | ||
1033 | ret = kstrtou32(page, 0, &val); | |
1034 | if (ret < 0) | |
1035 | return ret; | |
1036 | ||
1037 | if (da->da_dev->export_count) { | |
1038 | pr_err("dev[%p]: Unable to change SE Device" | |
1039 | " optimal_sectors while export_count is %d\n", | |
1040 | da->da_dev, da->da_dev->export_count); | |
1041 | return -EINVAL; | |
1042 | } | |
1043 | if (val > da->hw_max_sectors) { | |
1044 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" | |
1045 | " greater than hw_max_sectors: %u\n", | |
1046 | da->da_dev, val, da->hw_max_sectors); | |
1047 | return -EINVAL; | |
1048 | } | |
1049 | ||
1050 | da->optimal_sectors = val; | |
1051 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", | |
1052 | da->da_dev, val); | |
1053 | return count; | |
5873c4d1 CH |
1054 | } |
1055 | ||
2eafd729 | 1056 | static ssize_t block_size_store(struct config_item *item, |
3effdb90 CH |
1057 | const char *page, size_t count) |
1058 | { | |
2eafd729 | 1059 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
1060 | u32 val; |
1061 | int ret; | |
1062 | ||
1063 | ret = kstrtou32(page, 0, &val); | |
1064 | if (ret < 0) | |
1065 | return ret; | |
5873c4d1 | 1066 | |
3effdb90 CH |
1067 | if (da->da_dev->export_count) { |
1068 | pr_err("dev[%p]: Unable to change SE Device block_size" | |
1069 | " while export_count is %d\n", | |
1070 | da->da_dev, da->da_dev->export_count); | |
1071 | return -EINVAL; | |
1072 | } | |
1073 | ||
1074 | if (val != 512 && val != 1024 && val != 2048 && val != 4096) { | |
1075 | pr_err("dev[%p]: Illegal value for block_device: %u" | |
1076 | " for SE device, must be 512, 1024, 2048 or 4096\n", | |
1077 | da->da_dev, val); | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | ||
1081 | da->block_size = val; | |
1082 | if (da->max_bytes_per_io) | |
1083 | da->hw_max_sectors = da->max_bytes_per_io / val; | |
1084 | ||
1085 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", | |
1086 | da->da_dev, val); | |
1087 | return count; | |
1088 | } | |
5873c4d1 | 1089 | |
c17d5d5f MC |
1090 | static ssize_t alua_support_show(struct config_item *item, char *page) |
1091 | { | |
1092 | struct se_dev_attrib *da = to_attrib(item); | |
1093 | u8 flags = da->da_dev->transport->transport_flags; | |
1094 | ||
1095 | return snprintf(page, PAGE_SIZE, "%d\n", | |
1096 | flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1); | |
1097 | } | |
1098 | ||
1099 | static ssize_t pgr_support_show(struct config_item *item, char *page) | |
1100 | { | |
1101 | struct se_dev_attrib *da = to_attrib(item); | |
1102 | u8 flags = da->da_dev->transport->transport_flags; | |
1103 | ||
1104 | return snprintf(page, PAGE_SIZE, "%d\n", | |
1105 | flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); | |
1106 | } | |
1107 | ||
2eafd729 CH |
1108 | CONFIGFS_ATTR(, emulate_model_alias); |
1109 | CONFIGFS_ATTR(, emulate_dpo); | |
1110 | CONFIGFS_ATTR(, emulate_fua_write); | |
1111 | CONFIGFS_ATTR(, emulate_fua_read); | |
1112 | CONFIGFS_ATTR(, emulate_write_cache); | |
1113 | CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); | |
1114 | CONFIGFS_ATTR(, emulate_tas); | |
1115 | CONFIGFS_ATTR(, emulate_tpu); | |
1116 | CONFIGFS_ATTR(, emulate_tpws); | |
1117 | CONFIGFS_ATTR(, emulate_caw); | |
1118 | CONFIGFS_ATTR(, emulate_3pc); | |
1119 | CONFIGFS_ATTR(, pi_prot_type); | |
1120 | CONFIGFS_ATTR_RO(, hw_pi_prot_type); | |
1121 | CONFIGFS_ATTR(, pi_prot_format); | |
056e8924 | 1122 | CONFIGFS_ATTR(, pi_prot_verify); |
2eafd729 CH |
1123 | CONFIGFS_ATTR(, enforce_pr_isids); |
1124 | CONFIGFS_ATTR(, is_nonrot); | |
1125 | CONFIGFS_ATTR(, emulate_rest_reord); | |
1126 | CONFIGFS_ATTR(, force_pr_aptpl); | |
1127 | CONFIGFS_ATTR_RO(, hw_block_size); | |
1128 | CONFIGFS_ATTR(, block_size); | |
1129 | CONFIGFS_ATTR_RO(, hw_max_sectors); | |
1130 | CONFIGFS_ATTR(, optimal_sectors); | |
1131 | CONFIGFS_ATTR_RO(, hw_queue_depth); | |
1132 | CONFIGFS_ATTR(, queue_depth); | |
1133 | CONFIGFS_ATTR(, max_unmap_lba_count); | |
1134 | CONFIGFS_ATTR(, max_unmap_block_desc_count); | |
1135 | CONFIGFS_ATTR(, unmap_granularity); | |
1136 | CONFIGFS_ATTR(, unmap_granularity_alignment); | |
e6f41633 | 1137 | CONFIGFS_ATTR(, unmap_zeroes_data); |
2eafd729 | 1138 | CONFIGFS_ATTR(, max_write_same_len); |
c17d5d5f MC |
1139 | CONFIGFS_ATTR_RO(, alua_support); |
1140 | CONFIGFS_ATTR_RO(, pgr_support); | |
c66ac9db | 1141 | |
5873c4d1 CH |
1142 | /* |
1143 | * dev_attrib attributes for devices using the target core SBC/SPC | |
1144 | * interpreter. Any backend using spc_parse_cdb should be using | |
1145 | * these. | |
1146 | */ | |
1147 | struct configfs_attribute *sbc_attrib_attrs[] = { | |
2eafd729 CH |
1148 | &attr_emulate_model_alias, |
1149 | &attr_emulate_dpo, | |
1150 | &attr_emulate_fua_write, | |
1151 | &attr_emulate_fua_read, | |
1152 | &attr_emulate_write_cache, | |
1153 | &attr_emulate_ua_intlck_ctrl, | |
1154 | &attr_emulate_tas, | |
1155 | &attr_emulate_tpu, | |
1156 | &attr_emulate_tpws, | |
1157 | &attr_emulate_caw, | |
1158 | &attr_emulate_3pc, | |
1159 | &attr_pi_prot_type, | |
1160 | &attr_hw_pi_prot_type, | |
1161 | &attr_pi_prot_format, | |
056e8924 | 1162 | &attr_pi_prot_verify, |
2eafd729 CH |
1163 | &attr_enforce_pr_isids, |
1164 | &attr_is_nonrot, | |
1165 | &attr_emulate_rest_reord, | |
1166 | &attr_force_pr_aptpl, | |
1167 | &attr_hw_block_size, | |
1168 | &attr_block_size, | |
1169 | &attr_hw_max_sectors, | |
1170 | &attr_optimal_sectors, | |
1171 | &attr_hw_queue_depth, | |
1172 | &attr_queue_depth, | |
1173 | &attr_max_unmap_lba_count, | |
1174 | &attr_max_unmap_block_desc_count, | |
1175 | &attr_unmap_granularity, | |
1176 | &attr_unmap_granularity_alignment, | |
e6f41633 | 1177 | &attr_unmap_zeroes_data, |
2eafd729 | 1178 | &attr_max_write_same_len, |
c17d5d5f MC |
1179 | &attr_alua_support, |
1180 | &attr_pgr_support, | |
5873c4d1 CH |
1181 | NULL, |
1182 | }; | |
1183 | EXPORT_SYMBOL(sbc_attrib_attrs); | |
1184 | ||
5873c4d1 CH |
1185 | /* |
1186 | * Minimal dev_attrib attributes for devices passing through CDBs. | |
1187 | * In this case we only provide a few read-only attributes for | |
1188 | * backwards compatibility. | |
1189 | */ | |
1190 | struct configfs_attribute *passthrough_attrib_attrs[] = { | |
2eafd729 CH |
1191 | &attr_hw_pi_prot_type, |
1192 | &attr_hw_block_size, | |
1193 | &attr_hw_max_sectors, | |
1194 | &attr_hw_queue_depth, | |
c17d5d5f MC |
1195 | &attr_alua_support, |
1196 | &attr_pgr_support, | |
5873c4d1 CH |
1197 | NULL, |
1198 | }; | |
1199 | EXPORT_SYMBOL(passthrough_attrib_attrs); | |
1200 | ||
2eafd729 | 1201 | TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); |
8dc31ff9 | 1202 | TB_CIT_SETUP_DRV(dev_action, NULL, NULL); |
c66ac9db | 1203 | |
f79a897e | 1204 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 1205 | |
f8d389c6 | 1206 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1207 | |
2eafd729 CH |
1208 | static struct t10_wwn *to_t10_wwn(struct config_item *item) |
1209 | { | |
1210 | return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); | |
1211 | } | |
c66ac9db NB |
1212 | |
1213 | /* | |
1214 | * VPD page 0x80 Unit serial | |
1215 | */ | |
2eafd729 CH |
1216 | static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, |
1217 | char *page) | |
c66ac9db | 1218 | { |
c66ac9db | 1219 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
2eafd729 | 1220 | &to_t10_wwn(item)->unit_serial[0]); |
c66ac9db NB |
1221 | } |
1222 | ||
2eafd729 CH |
1223 | static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, |
1224 | const char *page, size_t count) | |
c66ac9db | 1225 | { |
2eafd729 | 1226 | struct t10_wwn *t10_wwn = to_t10_wwn(item); |
0fd97ccf | 1227 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
1228 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
1229 | ||
1230 | /* | |
1231 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
1232 | * from the struct scsi_device level firmware, do not allow | |
1233 | * VPD Unit Serial to be emulated. | |
1234 | * | |
1235 | * Note this struct scsi_device could also be emulating VPD | |
1236 | * information from its drivers/scsi LLD. But for now we assume | |
1237 | * it is doing 'the right thing' wrt a world wide unique | |
1238 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
1239 | */ | |
0fd97ccf | 1240 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 1241 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
1242 | " Unit Serial, ignoring request\n"); |
1243 | return -EOPNOTSUPP; | |
1244 | } | |
1245 | ||
60d645a4 | 1246 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 1247 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
1248 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
1249 | return -EOVERFLOW; | |
1250 | } | |
1251 | /* | |
1252 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
1253 | * do exist, fail here as changing this information on the fly | |
1254 | * (underneath the initiator side OS dependent multipath code) | |
1255 | * could cause negative effects. | |
1256 | */ | |
0fd97ccf CH |
1257 | if (dev->export_count) { |
1258 | pr_err("Unable to set VPD Unit Serial while" | |
1259 | " active %d $FABRIC_MOD exports exist\n", | |
1260 | dev->export_count); | |
1261 | return -EINVAL; | |
c66ac9db | 1262 | } |
0fd97ccf | 1263 | |
c66ac9db NB |
1264 | /* |
1265 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
1266 | * | |
1267 | * Also, strip any newline added from the userspace | |
1268 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
1269 | */ | |
1270 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
1271 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 1272 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 1273 | "%s", strstrip(buf)); |
0fd97ccf | 1274 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 1275 | |
6708bb27 | 1276 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 1277 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
1278 | |
1279 | return count; | |
1280 | } | |
1281 | ||
c66ac9db NB |
1282 | /* |
1283 | * VPD page 0x83 Protocol Identifier | |
1284 | */ | |
2eafd729 CH |
1285 | static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, |
1286 | char *page) | |
c66ac9db | 1287 | { |
2eafd729 | 1288 | struct t10_wwn *t10_wwn = to_t10_wwn(item); |
c66ac9db NB |
1289 | struct t10_vpd *vpd; |
1290 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
1291 | ssize_t len = 0; | |
1292 | ||
c66ac9db NB |
1293 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
1294 | ||
1295 | spin_lock(&t10_wwn->t10_vpd_lock); | |
1296 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 1297 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
1298 | continue; |
1299 | ||
1300 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
1301 | ||
6708bb27 | 1302 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1303 | break; |
1304 | ||
1305 | len += sprintf(page+len, "%s", buf); | |
1306 | } | |
1307 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
1308 | ||
1309 | return len; | |
1310 | } | |
1311 | ||
c66ac9db NB |
1312 | /* |
1313 | * Generic wrapper for dumping VPD identifiers by association. | |
1314 | */ | |
1315 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
2eafd729 CH |
1316 | static ssize_t target_wwn_##_name##_show(struct config_item *item, \ |
1317 | char *page) \ | |
c66ac9db | 1318 | { \ |
2eafd729 CH |
1319 | struct t10_wwn *t10_wwn = to_t10_wwn(item); \ |
1320 | struct t10_vpd *vpd; \ | |
c66ac9db NB |
1321 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ |
1322 | ssize_t len = 0; \ | |
1323 | \ | |
c66ac9db NB |
1324 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
1325 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
1326 | if (vpd->association != _assoc) \ | |
1327 | continue; \ | |
1328 | \ | |
1329 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1330 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1331 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1332 | break; \ |
1333 | len += sprintf(page+len, "%s", buf); \ | |
1334 | \ | |
1335 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1336 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1337 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1338 | break; \ |
1339 | len += sprintf(page+len, "%s", buf); \ | |
1340 | \ | |
1341 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1342 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1343 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1344 | break; \ |
1345 | len += sprintf(page+len, "%s", buf); \ | |
1346 | } \ | |
1347 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
1348 | \ | |
1349 | return len; \ | |
1350 | } | |
1351 | ||
2eafd729 | 1352 | /* VPD page 0x83 Association: Logical Unit */ |
c66ac9db | 1353 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); |
2eafd729 | 1354 | /* VPD page 0x83 Association: Target Port */ |
c66ac9db | 1355 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); |
2eafd729 | 1356 | /* VPD page 0x83 Association: SCSI Target Device */ |
c66ac9db NB |
1357 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); |
1358 | ||
2eafd729 CH |
1359 | CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); |
1360 | CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); | |
1361 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); | |
1362 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); | |
1363 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); | |
c66ac9db NB |
1364 | |
1365 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
2eafd729 CH |
1366 | &target_wwn_attr_vpd_unit_serial, |
1367 | &target_wwn_attr_vpd_protocol_identifier, | |
1368 | &target_wwn_attr_vpd_assoc_logical_unit, | |
1369 | &target_wwn_attr_vpd_assoc_target_port, | |
1370 | &target_wwn_attr_vpd_assoc_scsi_target_device, | |
c66ac9db NB |
1371 | NULL, |
1372 | }; | |
1373 | ||
2eafd729 | 1374 | TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 1375 | |
f8d389c6 | 1376 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1377 | |
91e2e39b | 1378 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1379 | |
2eafd729 CH |
1380 | static struct se_device *pr_to_dev(struct config_item *item) |
1381 | { | |
1382 | return container_of(to_config_group(item), struct se_device, | |
1383 | dev_pr_group); | |
1384 | } | |
c66ac9db | 1385 | |
d977f437 CH |
1386 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
1387 | char *page) | |
c66ac9db NB |
1388 | { |
1389 | struct se_node_acl *se_nacl; | |
1390 | struct t10_pr_registration *pr_reg; | |
1391 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
1392 | |
1393 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1394 | ||
c66ac9db | 1395 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
1396 | if (!pr_reg) |
1397 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
1398 | ||
c66ac9db | 1399 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 1400 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 1401 | |
d977f437 | 1402 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 1403 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 1404 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
1405 | } |
1406 | ||
d977f437 CH |
1407 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
1408 | char *page) | |
c66ac9db NB |
1409 | { |
1410 | struct se_node_acl *se_nacl; | |
d977f437 | 1411 | ssize_t len; |
c66ac9db | 1412 | |
c66ac9db | 1413 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
1414 | if (se_nacl) { |
1415 | len = sprintf(page, | |
1416 | "SPC-2 Reservation: %s Initiator: %s\n", | |
1417 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
1418 | se_nacl->initiatorname); | |
1419 | } else { | |
1420 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1421 | } |
d977f437 | 1422 | return len; |
c66ac9db NB |
1423 | } |
1424 | ||
2eafd729 | 1425 | static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) |
c66ac9db | 1426 | { |
2eafd729 | 1427 | struct se_device *dev = pr_to_dev(item); |
d977f437 | 1428 | int ret; |
c66ac9db | 1429 | |
4ec5bf0e | 1430 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
d977f437 | 1431 | return sprintf(page, "Passthrough\n"); |
c66ac9db | 1432 | |
d977f437 CH |
1433 | spin_lock(&dev->dev_reservation_lock); |
1434 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1435 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1436 | else | |
1437 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1438 | spin_unlock(&dev->dev_reservation_lock); | |
1439 | return ret; | |
c66ac9db NB |
1440 | } |
1441 | ||
2eafd729 CH |
1442 | static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, |
1443 | char *page) | |
c66ac9db | 1444 | { |
2eafd729 | 1445 | struct se_device *dev = pr_to_dev(item); |
c66ac9db NB |
1446 | ssize_t len = 0; |
1447 | ||
c66ac9db | 1448 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1449 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1450 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1451 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1452 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1453 | " Ports registration\n"); | |
d977f437 | 1454 | } else { |
c66ac9db NB |
1455 | len = sprintf(page, "SPC-3 Reservation: Single" |
1456 | " Target Port registration\n"); | |
d977f437 | 1457 | } |
c66ac9db | 1458 | |
d977f437 | 1459 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1460 | return len; |
1461 | } | |
1462 | ||
2eafd729 CH |
1463 | static ssize_t target_pr_res_pr_generation_show(struct config_item *item, |
1464 | char *page) | |
c66ac9db | 1465 | { |
2eafd729 | 1466 | return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); |
c66ac9db NB |
1467 | } |
1468 | ||
c66ac9db | 1469 | |
2eafd729 CH |
1470 | static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, |
1471 | char *page) | |
c66ac9db | 1472 | { |
2eafd729 | 1473 | struct se_device *dev = pr_to_dev(item); |
c66ac9db | 1474 | struct se_node_acl *se_nacl; |
c66ac9db NB |
1475 | struct se_portal_group *se_tpg; |
1476 | struct t10_pr_registration *pr_reg; | |
9ac8928e | 1477 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1478 | ssize_t len = 0; |
1479 | ||
c66ac9db NB |
1480 | spin_lock(&dev->dev_reservation_lock); |
1481 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1482 | if (!pr_reg) { |
c66ac9db | 1483 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1484 | goto out_unlock; |
c66ac9db | 1485 | } |
d977f437 | 1486 | |
c66ac9db NB |
1487 | se_nacl = pr_reg->pr_reg_nacl; |
1488 | se_tpg = se_nacl->se_tpg; | |
e3d6f909 | 1489 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1490 | |
1491 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1492 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1493 | tfo->tpg_get_wwn(se_tpg)); | |
1494 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1495 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
f2d30680 | 1496 | " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, |
c66ac9db | 1497 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), |
79dc9c9e | 1498 | tfo->get_fabric_name(), pr_reg->pr_aptpl_target_lun); |
c66ac9db | 1499 | |
d977f437 CH |
1500 | out_unlock: |
1501 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1502 | return len; |
1503 | } | |
1504 | ||
c66ac9db | 1505 | |
2eafd729 CH |
1506 | static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, |
1507 | char *page) | |
c66ac9db | 1508 | { |
2eafd729 | 1509 | struct se_device *dev = pr_to_dev(item); |
9ac8928e | 1510 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1511 | struct t10_pr_registration *pr_reg; |
1512 | unsigned char buf[384]; | |
1513 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1514 | ssize_t len = 0; | |
d2843c17 | 1515 | int reg_count = 0; |
c66ac9db | 1516 | |
c66ac9db NB |
1517 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1518 | ||
0fd97ccf CH |
1519 | spin_lock(&dev->t10_pr.registration_lock); |
1520 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1521 | pr_reg_list) { |
1522 | ||
1523 | memset(buf, 0, 384); | |
1524 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1525 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 1526 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
1527 | PR_REG_ISID_ID_LEN); |
1528 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1529 | tfo->get_fabric_name(), | |
d2843c17 | 1530 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1531 | pr_reg->pr_res_generation); |
1532 | ||
6708bb27 | 1533 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1534 | break; |
1535 | ||
1536 | len += sprintf(page+len, "%s", buf); | |
1537 | reg_count++; | |
1538 | } | |
0fd97ccf | 1539 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1540 | |
6708bb27 | 1541 | if (!reg_count) |
c66ac9db NB |
1542 | len += sprintf(page+len, "None\n"); |
1543 | ||
1544 | return len; | |
1545 | } | |
1546 | ||
2eafd729 | 1547 | static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) |
c66ac9db | 1548 | { |
2eafd729 | 1549 | struct se_device *dev = pr_to_dev(item); |
c66ac9db NB |
1550 | struct t10_pr_registration *pr_reg; |
1551 | ssize_t len = 0; | |
1552 | ||
c66ac9db NB |
1553 | spin_lock(&dev->dev_reservation_lock); |
1554 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1555 | if (pr_reg) { |
1556 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1557 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1558 | } else { | |
c66ac9db | 1559 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1560 | } |
c66ac9db | 1561 | |
d977f437 | 1562 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1563 | return len; |
1564 | } | |
1565 | ||
2eafd729 | 1566 | static ssize_t target_pr_res_type_show(struct config_item *item, char *page) |
c66ac9db | 1567 | { |
2eafd729 CH |
1568 | struct se_device *dev = pr_to_dev(item); |
1569 | ||
4ec5bf0e | 1570 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
d977f437 CH |
1571 | return sprintf(page, "SPC_PASSTHROUGH\n"); |
1572 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1573 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1574 | else | |
1575 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1576 | } |
1577 | ||
2eafd729 CH |
1578 | static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, |
1579 | char *page) | |
c66ac9db | 1580 | { |
2eafd729 CH |
1581 | struct se_device *dev = pr_to_dev(item); |
1582 | ||
4ec5bf0e | 1583 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
c66ac9db NB |
1584 | return 0; |
1585 | ||
1586 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1587 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1588 | } |
1589 | ||
2eafd729 CH |
1590 | static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, |
1591 | char *page) | |
c66ac9db | 1592 | { |
2eafd729 CH |
1593 | struct se_device *dev = pr_to_dev(item); |
1594 | ||
4ec5bf0e | 1595 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
c66ac9db NB |
1596 | return 0; |
1597 | ||
1598 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1599 | } | |
1600 | ||
1601 | enum { | |
1602 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1603 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1604 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1605 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1606 | }; | |
1607 | ||
1608 | static match_table_t tokens = { | |
1609 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1610 | {Opt_initiator_node, "initiator_node=%s"}, | |
1611 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1612 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1613 | {Opt_res_holder, "res_holder=%d"}, | |
1614 | {Opt_res_type, "res_type=%d"}, | |
1615 | {Opt_res_scope, "res_scope=%d"}, | |
1616 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
a2db857b | 1617 | {Opt_mapped_lun, "mapped_lun=%u"}, |
c66ac9db NB |
1618 | {Opt_target_fabric, "target_fabric=%s"}, |
1619 | {Opt_target_node, "target_node=%s"}, | |
1620 | {Opt_tpgt, "tpgt=%d"}, | |
1621 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
a2db857b | 1622 | {Opt_target_lun, "target_lun=%u"}, |
c66ac9db NB |
1623 | {Opt_err, NULL} |
1624 | }; | |
1625 | ||
2eafd729 CH |
1626 | static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, |
1627 | const char *page, size_t count) | |
c66ac9db | 1628 | { |
2eafd729 | 1629 | struct se_device *dev = pr_to_dev(item); |
6d180253 JJ |
1630 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1631 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 1632 | char *orig, *ptr, *opts; |
c66ac9db NB |
1633 | substring_t args[MAX_OPT_ARGS]; |
1634 | unsigned long long tmp_ll; | |
1635 | u64 sa_res_key = 0; | |
f2d30680 | 1636 | u64 mapped_lun = 0, target_lun = 0; |
c66ac9db | 1637 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; |
45fb94c2 BVA |
1638 | u16 tpgt = 0; |
1639 | u8 type = 0; | |
c66ac9db | 1640 | |
4ec5bf0e | 1641 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
9105bfc0 | 1642 | return count; |
d977f437 | 1643 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
9105bfc0 | 1644 | return count; |
c66ac9db | 1645 | |
0fd97ccf | 1646 | if (dev->export_count) { |
6708bb27 | 1647 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1648 | " active fabric exports exist\n"); |
1649 | return -EINVAL; | |
1650 | } | |
1651 | ||
1652 | opts = kstrdup(page, GFP_KERNEL); | |
1653 | if (!opts) | |
1654 | return -ENOMEM; | |
1655 | ||
1656 | orig = opts; | |
90c161b6 | 1657 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1658 | if (!*ptr) |
1659 | continue; | |
1660 | ||
1661 | token = match_token(ptr, tokens, args); | |
1662 | switch (token) { | |
1663 | case Opt_initiator_fabric: | |
8d213559 | 1664 | i_fabric = match_strdup(args); |
6d180253 JJ |
1665 | if (!i_fabric) { |
1666 | ret = -ENOMEM; | |
1667 | goto out; | |
1668 | } | |
c66ac9db NB |
1669 | break; |
1670 | case Opt_initiator_node: | |
8d213559 | 1671 | i_port = match_strdup(args); |
6d180253 JJ |
1672 | if (!i_port) { |
1673 | ret = -ENOMEM; | |
1674 | goto out; | |
1675 | } | |
60d645a4 | 1676 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1677 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1678 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1679 | PR_APTPL_MAX_IPORT_LEN); | |
1680 | ret = -EINVAL; | |
1681 | break; | |
1682 | } | |
1683 | break; | |
1684 | case Opt_initiator_sid: | |
8d213559 | 1685 | isid = match_strdup(args); |
6d180253 JJ |
1686 | if (!isid) { |
1687 | ret = -ENOMEM; | |
1688 | goto out; | |
1689 | } | |
60d645a4 | 1690 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1691 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1692 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1693 | PR_REG_ISID_LEN); | |
1694 | ret = -EINVAL; | |
1695 | break; | |
1696 | } | |
1697 | break; | |
1698 | case Opt_sa_res_key: | |
a2db857b | 1699 | ret = match_u64(args, &tmp_ll); |
c66ac9db | 1700 | if (ret < 0) { |
8d213559 | 1701 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1702 | goto out; |
1703 | } | |
1704 | sa_res_key = (u64)tmp_ll; | |
1705 | break; | |
1706 | /* | |
1707 | * PR APTPL Metadata for Reservation | |
1708 | */ | |
1709 | case Opt_res_holder: | |
c2091026 DD |
1710 | ret = match_int(args, &arg); |
1711 | if (ret) | |
1712 | goto out; | |
c66ac9db NB |
1713 | res_holder = arg; |
1714 | break; | |
1715 | case Opt_res_type: | |
c2091026 DD |
1716 | ret = match_int(args, &arg); |
1717 | if (ret) | |
1718 | goto out; | |
c66ac9db NB |
1719 | type = (u8)arg; |
1720 | break; | |
1721 | case Opt_res_scope: | |
c2091026 DD |
1722 | ret = match_int(args, &arg); |
1723 | if (ret) | |
1724 | goto out; | |
c66ac9db NB |
1725 | break; |
1726 | case Opt_res_all_tg_pt: | |
c2091026 DD |
1727 | ret = match_int(args, &arg); |
1728 | if (ret) | |
1729 | goto out; | |
c66ac9db NB |
1730 | all_tg_pt = (int)arg; |
1731 | break; | |
1732 | case Opt_mapped_lun: | |
a2db857b | 1733 | ret = match_u64(args, &tmp_ll); |
c2091026 DD |
1734 | if (ret) |
1735 | goto out; | |
a2db857b | 1736 | mapped_lun = (u64)tmp_ll; |
c66ac9db NB |
1737 | break; |
1738 | /* | |
1739 | * PR APTPL Metadata for Target Port | |
1740 | */ | |
1741 | case Opt_target_fabric: | |
8d213559 | 1742 | t_fabric = match_strdup(args); |
6d180253 JJ |
1743 | if (!t_fabric) { |
1744 | ret = -ENOMEM; | |
1745 | goto out; | |
1746 | } | |
c66ac9db NB |
1747 | break; |
1748 | case Opt_target_node: | |
8d213559 | 1749 | t_port = match_strdup(args); |
6d180253 JJ |
1750 | if (!t_port) { |
1751 | ret = -ENOMEM; | |
1752 | goto out; | |
1753 | } | |
60d645a4 | 1754 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1755 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1756 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1757 | PR_APTPL_MAX_TPORT_LEN); | |
1758 | ret = -EINVAL; | |
1759 | break; | |
1760 | } | |
1761 | break; | |
1762 | case Opt_tpgt: | |
c2091026 DD |
1763 | ret = match_int(args, &arg); |
1764 | if (ret) | |
1765 | goto out; | |
c66ac9db NB |
1766 | tpgt = (u16)arg; |
1767 | break; | |
1768 | case Opt_port_rtpi: | |
c2091026 DD |
1769 | ret = match_int(args, &arg); |
1770 | if (ret) | |
1771 | goto out; | |
c66ac9db NB |
1772 | break; |
1773 | case Opt_target_lun: | |
a2db857b | 1774 | ret = match_u64(args, &tmp_ll); |
c2091026 DD |
1775 | if (ret) |
1776 | goto out; | |
a2db857b | 1777 | target_lun = (u64)tmp_ll; |
c66ac9db NB |
1778 | break; |
1779 | default: | |
1780 | break; | |
1781 | } | |
1782 | } | |
1783 | ||
6708bb27 AG |
1784 | if (!i_port || !t_port || !sa_res_key) { |
1785 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1786 | ret = -EINVAL; |
1787 | goto out; | |
1788 | } | |
1789 | ||
1790 | if (res_holder && !(type)) { | |
6708bb27 | 1791 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1792 | " holder\n", type); |
1793 | ret = -EINVAL; | |
1794 | goto out; | |
1795 | } | |
1796 | ||
0fd97ccf | 1797 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1798 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1799 | res_holder, all_tg_pt, type); | |
1800 | out: | |
6d180253 JJ |
1801 | kfree(i_fabric); |
1802 | kfree(i_port); | |
1803 | kfree(isid); | |
1804 | kfree(t_fabric); | |
1805 | kfree(t_port); | |
c66ac9db NB |
1806 | kfree(orig); |
1807 | return (ret == 0) ? count : ret; | |
1808 | } | |
1809 | ||
c66ac9db | 1810 | |
2eafd729 CH |
1811 | CONFIGFS_ATTR_RO(target_pr_, res_holder); |
1812 | CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); | |
1813 | CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); | |
1814 | CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); | |
1815 | CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); | |
1816 | CONFIGFS_ATTR_RO(target_pr_, res_pr_type); | |
1817 | CONFIGFS_ATTR_RO(target_pr_, res_type); | |
1818 | CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); | |
1819 | CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); | |
c66ac9db NB |
1820 | |
1821 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
2eafd729 CH |
1822 | &target_pr_attr_res_holder, |
1823 | &target_pr_attr_res_pr_all_tgt_pts, | |
1824 | &target_pr_attr_res_pr_generation, | |
1825 | &target_pr_attr_res_pr_holder_tg_port, | |
1826 | &target_pr_attr_res_pr_registered_i_pts, | |
1827 | &target_pr_attr_res_pr_type, | |
1828 | &target_pr_attr_res_type, | |
1829 | &target_pr_attr_res_aptpl_active, | |
1830 | &target_pr_attr_res_aptpl_metadata, | |
c66ac9db NB |
1831 | NULL, |
1832 | }; | |
1833 | ||
2eafd729 | 1834 | TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); |
c66ac9db | 1835 | |
91e2e39b | 1836 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1837 | |
73112edc | 1838 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db | 1839 | |
2eafd729 CH |
1840 | static inline struct se_device *to_device(struct config_item *item) |
1841 | { | |
1842 | return container_of(to_config_group(item), struct se_device, dev_group); | |
1843 | } | |
1844 | ||
1845 | static ssize_t target_dev_info_show(struct config_item *item, char *page) | |
c66ac9db | 1846 | { |
2eafd729 | 1847 | struct se_device *dev = to_device(item); |
c66ac9db NB |
1848 | int bl = 0; |
1849 | ssize_t read_bytes = 0; | |
1850 | ||
0fd97ccf | 1851 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1852 | read_bytes += bl; |
0a06d430 CH |
1853 | read_bytes += dev->transport->show_configfs_dev_params(dev, |
1854 | page+read_bytes); | |
c66ac9db NB |
1855 | return read_bytes; |
1856 | } | |
1857 | ||
2eafd729 CH |
1858 | static ssize_t target_dev_control_store(struct config_item *item, |
1859 | const char *page, size_t count) | |
c66ac9db | 1860 | { |
2eafd729 | 1861 | struct se_device *dev = to_device(item); |
c66ac9db | 1862 | |
0a06d430 | 1863 | return dev->transport->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1864 | } |
1865 | ||
2eafd729 | 1866 | static ssize_t target_dev_alias_show(struct config_item *item, char *page) |
c66ac9db | 1867 | { |
2eafd729 | 1868 | struct se_device *dev = to_device(item); |
c66ac9db | 1869 | |
0fd97ccf | 1870 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1871 | return 0; |
1872 | ||
0fd97ccf | 1873 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1874 | } |
1875 | ||
2eafd729 CH |
1876 | static ssize_t target_dev_alias_store(struct config_item *item, |
1877 | const char *page, size_t count) | |
c66ac9db | 1878 | { |
2eafd729 | 1879 | struct se_device *dev = to_device(item); |
0fd97ccf | 1880 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
1881 | ssize_t read_bytes; |
1882 | ||
1883 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1884 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1885 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1886 | SE_DEV_ALIAS_LEN-1); | |
1887 | return -EINVAL; | |
1888 | } | |
1889 | ||
0fd97ccf | 1890 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1891 | if (!read_bytes) |
1892 | return -EINVAL; | |
0fd97ccf CH |
1893 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1894 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1895 | |
0fd97ccf | 1896 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1897 | |
6708bb27 | 1898 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1899 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1900 | config_item_name(&dev->dev_group.cg_item), |
1901 | dev->dev_alias); | |
c66ac9db NB |
1902 | |
1903 | return read_bytes; | |
1904 | } | |
1905 | ||
2eafd729 | 1906 | static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) |
c66ac9db | 1907 | { |
2eafd729 | 1908 | struct se_device *dev = to_device(item); |
c66ac9db | 1909 | |
0fd97ccf | 1910 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1911 | return 0; |
1912 | ||
0fd97ccf | 1913 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1914 | } |
1915 | ||
2eafd729 CH |
1916 | static ssize_t target_dev_udev_path_store(struct config_item *item, |
1917 | const char *page, size_t count) | |
c66ac9db | 1918 | { |
2eafd729 | 1919 | struct se_device *dev = to_device(item); |
0fd97ccf | 1920 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
1921 | ssize_t read_bytes; |
1922 | ||
1923 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1924 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1925 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1926 | SE_UDEV_PATH_LEN-1); | |
1927 | return -EINVAL; | |
1928 | } | |
1929 | ||
0fd97ccf | 1930 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1931 | "%s", page); |
3011684c DC |
1932 | if (!read_bytes) |
1933 | return -EINVAL; | |
0fd97ccf CH |
1934 | if (dev->udev_path[read_bytes - 1] == '\n') |
1935 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1936 | |
0fd97ccf | 1937 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1938 | |
6708bb27 | 1939 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1940 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1941 | config_item_name(&dev->dev_group.cg_item), |
1942 | dev->udev_path); | |
c66ac9db NB |
1943 | |
1944 | return read_bytes; | |
1945 | } | |
1946 | ||
2eafd729 | 1947 | static ssize_t target_dev_enable_show(struct config_item *item, char *page) |
64146db7 | 1948 | { |
2eafd729 | 1949 | struct se_device *dev = to_device(item); |
64146db7 | 1950 | |
cb0f32e1 | 1951 | return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev)); |
64146db7 AG |
1952 | } |
1953 | ||
2eafd729 CH |
1954 | static ssize_t target_dev_enable_store(struct config_item *item, |
1955 | const char *page, size_t count) | |
c66ac9db | 1956 | { |
2eafd729 | 1957 | struct se_device *dev = to_device(item); |
c66ac9db | 1958 | char *ptr; |
0fd97ccf | 1959 | int ret; |
c66ac9db NB |
1960 | |
1961 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1962 | if (!ptr) { |
1963 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1964 | " is \"1\"\n"); |
1965 | return -EINVAL; | |
1966 | } | |
c66ac9db | 1967 | |
0fd97ccf CH |
1968 | ret = target_configure_device(dev); |
1969 | if (ret) | |
1970 | return ret; | |
c66ac9db NB |
1971 | return count; |
1972 | } | |
1973 | ||
2eafd729 | 1974 | static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) |
c66ac9db | 1975 | { |
2eafd729 | 1976 | struct se_device *dev = to_device(item); |
c66ac9db NB |
1977 | struct config_item *lu_ci; |
1978 | struct t10_alua_lu_gp *lu_gp; | |
1979 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1980 | ssize_t len = 0; | |
1981 | ||
c66ac9db | 1982 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1983 | if (!lu_gp_mem) |
1984 | return 0; | |
c66ac9db NB |
1985 | |
1986 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1987 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1988 | if (lu_gp) { |
c66ac9db NB |
1989 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1990 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1991 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1992 | } | |
1993 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1994 | ||
1995 | return len; | |
1996 | } | |
1997 | ||
2eafd729 CH |
1998 | static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, |
1999 | const char *page, size_t count) | |
c66ac9db | 2000 | { |
2eafd729 | 2001 | struct se_device *dev = to_device(item); |
0fd97ccf | 2002 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
2003 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
2004 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2005 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2006 | int move = 0; | |
2007 | ||
c87fbd56 CH |
2008 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
2009 | if (!lu_gp_mem) | |
9105bfc0 | 2010 | return count; |
c87fbd56 | 2011 | |
c66ac9db | 2012 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 2013 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
2014 | return -EINVAL; |
2015 | } | |
2016 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2017 | memcpy(buf, page, count); | |
2018 | /* | |
2019 | * Any ALUA logical unit alias besides "NULL" means we will be | |
2020 | * making a new group association. | |
2021 | */ | |
2022 | if (strcmp(strstrip(buf), "NULL")) { | |
2023 | /* | |
2024 | * core_alua_get_lu_gp_by_name() will increment reference to | |
2025 | * struct t10_alua_lu_gp. This reference is released with | |
2026 | * core_alua_get_lu_gp_by_name below(). | |
2027 | */ | |
2028 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 2029 | if (!lu_gp_new) |
c66ac9db NB |
2030 | return -ENODEV; |
2031 | } | |
c66ac9db NB |
2032 | |
2033 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
2034 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 2035 | if (lu_gp) { |
c66ac9db NB |
2036 | /* |
2037 | * Clearing an existing lu_gp association, and replacing | |
2038 | * with NULL | |
2039 | */ | |
6708bb27 AG |
2040 | if (!lu_gp_new) { |
2041 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
2042 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
2043 | " %hu\n", | |
2044 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2045 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
2046 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
2047 | lu_gp->lu_gp_id); | |
2048 | ||
2049 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
2050 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2051 | ||
2052 | return count; | |
2053 | } | |
2054 | /* | |
2055 | * Removing existing association of lu_gp_mem with lu_gp | |
2056 | */ | |
2057 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
2058 | move = 1; | |
2059 | } | |
2060 | /* | |
2061 | * Associate lu_gp_mem with lu_gp_new. | |
2062 | */ | |
2063 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
2064 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2065 | ||
6708bb27 | 2066 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
2067 | " core/alua/lu_gps/%s, ID: %hu\n", |
2068 | (move) ? "Moving" : "Adding", | |
2069 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2070 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
2071 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
2072 | lu_gp_new->lu_gp_id); | |
2073 | ||
2074 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
2075 | return count; | |
2076 | } | |
2077 | ||
2eafd729 | 2078 | static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) |
229d4f11 | 2079 | { |
2eafd729 | 2080 | struct se_device *dev = to_device(item); |
229d4f11 HR |
2081 | struct t10_alua_lba_map *map; |
2082 | struct t10_alua_lba_map_member *mem; | |
2083 | char *b = page; | |
2084 | int bl = 0; | |
2085 | char state; | |
2086 | ||
2087 | spin_lock(&dev->t10_alua.lba_map_lock); | |
2088 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
2089 | bl += sprintf(b + bl, "%u %u\n", | |
2090 | dev->t10_alua.lba_map_segment_size, | |
2091 | dev->t10_alua.lba_map_segment_multiplier); | |
2092 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
2093 | bl += sprintf(b + bl, "%llu %llu", | |
2094 | map->lba_map_first_lba, map->lba_map_last_lba); | |
2095 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
2096 | lba_map_mem_list) { | |
2097 | switch (mem->lba_map_mem_alua_state) { | |
2098 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
2099 | state = 'O'; | |
2100 | break; | |
2101 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
2102 | state = 'A'; | |
2103 | break; | |
2104 | case ALUA_ACCESS_STATE_STANDBY: | |
2105 | state = 'S'; | |
2106 | break; | |
2107 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
2108 | state = 'U'; | |
2109 | break; | |
2110 | default: | |
2111 | state = '.'; | |
2112 | break; | |
2113 | } | |
2114 | bl += sprintf(b + bl, " %d:%c", | |
2115 | mem->lba_map_mem_alua_pg_id, state); | |
2116 | } | |
2117 | bl += sprintf(b + bl, "\n"); | |
2118 | } | |
2119 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
2120 | return bl; | |
2121 | } | |
2122 | ||
2eafd729 CH |
2123 | static ssize_t target_dev_lba_map_store(struct config_item *item, |
2124 | const char *page, size_t count) | |
229d4f11 | 2125 | { |
2eafd729 | 2126 | struct se_device *dev = to_device(item); |
229d4f11 HR |
2127 | struct t10_alua_lba_map *lba_map = NULL; |
2128 | struct list_head lba_list; | |
f0a8afec | 2129 | char *map_entries, *orig, *ptr; |
229d4f11 HR |
2130 | char state; |
2131 | int pg_num = -1, pg; | |
2132 | int ret = 0, num = 0, pg_id, alua_state; | |
2133 | unsigned long start_lba = -1, end_lba = -1; | |
2134 | unsigned long segment_size = -1, segment_mult = -1; | |
2135 | ||
f0a8afec | 2136 | orig = map_entries = kstrdup(page, GFP_KERNEL); |
229d4f11 HR |
2137 | if (!map_entries) |
2138 | return -ENOMEM; | |
2139 | ||
2140 | INIT_LIST_HEAD(&lba_list); | |
2141 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
2142 | if (!*ptr) | |
2143 | continue; | |
2144 | ||
2145 | if (num == 0) { | |
2146 | if (sscanf(ptr, "%lu %lu\n", | |
2147 | &segment_size, &segment_mult) != 2) { | |
2148 | pr_err("Invalid line %d\n", num); | |
2149 | ret = -EINVAL; | |
2150 | break; | |
2151 | } | |
2152 | num++; | |
2153 | continue; | |
2154 | } | |
2155 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
2156 | pr_err("Invalid line %d\n", num); | |
2157 | ret = -EINVAL; | |
2158 | break; | |
2159 | } | |
2160 | ptr = strchr(ptr, ' '); | |
2161 | if (!ptr) { | |
2162 | pr_err("Invalid line %d, missing end lba\n", num); | |
2163 | ret = -EINVAL; | |
2164 | break; | |
2165 | } | |
2166 | ptr++; | |
2167 | ptr = strchr(ptr, ' '); | |
2168 | if (!ptr) { | |
2169 | pr_err("Invalid line %d, missing state definitions\n", | |
2170 | num); | |
2171 | ret = -EINVAL; | |
2172 | break; | |
2173 | } | |
2174 | ptr++; | |
2175 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
2176 | start_lba, end_lba); | |
2177 | if (IS_ERR(lba_map)) { | |
2178 | ret = PTR_ERR(lba_map); | |
2179 | break; | |
2180 | } | |
2181 | pg = 0; | |
2182 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
2183 | switch (state) { | |
2184 | case 'O': | |
2185 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
2186 | break; | |
2187 | case 'A': | |
2188 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
2189 | break; | |
2190 | case 'S': | |
2191 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
2192 | break; | |
2193 | case 'U': | |
2194 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
2195 | break; | |
2196 | default: | |
2197 | pr_err("Invalid ALUA state '%c'\n", state); | |
2198 | ret = -EINVAL; | |
2199 | goto out; | |
2200 | } | |
2201 | ||
2202 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
2203 | pg_id, alua_state); | |
2204 | if (ret) { | |
2205 | pr_err("Invalid target descriptor %d:%c " | |
2206 | "at line %d\n", | |
2207 | pg_id, state, num); | |
2208 | break; | |
2209 | } | |
2210 | pg++; | |
2211 | ptr = strchr(ptr, ' '); | |
2212 | if (ptr) | |
2213 | ptr++; | |
2214 | else | |
2215 | break; | |
2216 | } | |
2217 | if (pg_num == -1) | |
2218 | pg_num = pg; | |
2219 | else if (pg != pg_num) { | |
2220 | pr_err("Only %d from %d port groups definitions " | |
2221 | "at line %d\n", pg, pg_num, num); | |
2222 | ret = -EINVAL; | |
2223 | break; | |
2224 | } | |
2225 | num++; | |
2226 | } | |
2227 | out: | |
2228 | if (ret) { | |
2229 | core_alua_free_lba_map(&lba_list); | |
2230 | count = ret; | |
2231 | } else | |
2232 | core_alua_set_lba_map(dev, &lba_list, | |
2233 | segment_size, segment_mult); | |
f0a8afec | 2234 | kfree(orig); |
229d4f11 HR |
2235 | return count; |
2236 | } | |
2237 | ||
2eafd729 CH |
2238 | CONFIGFS_ATTR_RO(target_dev_, info); |
2239 | CONFIGFS_ATTR_WO(target_dev_, control); | |
2240 | CONFIGFS_ATTR(target_dev_, alias); | |
2241 | CONFIGFS_ATTR(target_dev_, udev_path); | |
2242 | CONFIGFS_ATTR(target_dev_, enable); | |
2243 | CONFIGFS_ATTR(target_dev_, alua_lu_gp); | |
2244 | CONFIGFS_ATTR(target_dev_, lba_map); | |
229d4f11 | 2245 | |
73112edc | 2246 | static struct configfs_attribute *target_core_dev_attrs[] = { |
2eafd729 CH |
2247 | &target_dev_attr_info, |
2248 | &target_dev_attr_control, | |
2249 | &target_dev_attr_alias, | |
2250 | &target_dev_attr_udev_path, | |
2251 | &target_dev_attr_enable, | |
2252 | &target_dev_attr_alua_lu_gp, | |
2253 | &target_dev_attr_lba_map, | |
c66ac9db NB |
2254 | NULL, |
2255 | }; | |
2256 | ||
2257 | static void target_core_dev_release(struct config_item *item) | |
2258 | { | |
0fd97ccf CH |
2259 | struct config_group *dev_cg = to_config_group(item); |
2260 | struct se_device *dev = | |
2261 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2262 | |
0fd97ccf | 2263 | target_free_device(dev); |
c66ac9db NB |
2264 | } |
2265 | ||
c17cd249 NB |
2266 | /* |
2267 | * Used in target_core_fabric_configfs.c to verify valid se_device symlink | |
2268 | * within target_fabric_port_link() | |
2269 | */ | |
2270 | struct configfs_item_operations target_core_dev_item_ops = { | |
c66ac9db | 2271 | .release = target_core_dev_release, |
c66ac9db NB |
2272 | }; |
2273 | ||
73112edc | 2274 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 2275 | |
73112edc | 2276 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
2277 | |
2278 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2279 | ||
2eafd729 CH |
2280 | static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) |
2281 | { | |
2282 | return container_of(to_config_group(item), struct t10_alua_lu_gp, | |
2283 | lu_gp_group); | |
2284 | } | |
c66ac9db | 2285 | |
2eafd729 | 2286 | static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) |
c66ac9db | 2287 | { |
2eafd729 CH |
2288 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
2289 | ||
6708bb27 | 2290 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db | 2291 | return 0; |
c66ac9db NB |
2292 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); |
2293 | } | |
2294 | ||
2eafd729 CH |
2295 | static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, |
2296 | const char *page, size_t count) | |
c66ac9db | 2297 | { |
2eafd729 | 2298 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
c66ac9db NB |
2299 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; |
2300 | unsigned long lu_gp_id; | |
2301 | int ret; | |
2302 | ||
57103d7f | 2303 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 2304 | if (ret < 0) { |
57103d7f | 2305 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2306 | " lu_gp_id\n", ret); |
57103d7f | 2307 | return ret; |
c66ac9db NB |
2308 | } |
2309 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2310 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2311 | " 0x0000ffff\n", lu_gp_id); |
2312 | return -EINVAL; | |
2313 | } | |
2314 | ||
2315 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2316 | if (ret < 0) | |
2317 | return -EINVAL; | |
2318 | ||
6708bb27 | 2319 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2320 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2321 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2322 | lu_gp->lu_gp_id); | |
2323 | ||
2324 | return count; | |
2325 | } | |
2326 | ||
2eafd729 | 2327 | static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) |
c66ac9db | 2328 | { |
2eafd729 | 2329 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
c66ac9db NB |
2330 | struct se_device *dev; |
2331 | struct se_hba *hba; | |
c66ac9db NB |
2332 | struct t10_alua_lu_gp_member *lu_gp_mem; |
2333 | ssize_t len = 0, cur_len; | |
2334 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2335 | ||
2336 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2337 | ||
2338 | spin_lock(&lu_gp->lu_gp_lock); | |
2339 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2340 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 2341 | hba = dev->se_hba; |
c66ac9db NB |
2342 | |
2343 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2344 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2345 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
2346 | cur_len++; /* Extra byte for NULL terminator */ |
2347 | ||
2348 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2349 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2350 | "_members buffer\n"); |
2351 | break; | |
2352 | } | |
2353 | memcpy(page+len, buf, cur_len); | |
2354 | len += cur_len; | |
2355 | } | |
2356 | spin_unlock(&lu_gp->lu_gp_lock); | |
2357 | ||
2358 | return len; | |
2359 | } | |
2360 | ||
2eafd729 CH |
2361 | CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); |
2362 | CONFIGFS_ATTR_RO(target_lu_gp_, members); | |
c66ac9db NB |
2363 | |
2364 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2eafd729 CH |
2365 | &target_lu_gp_attr_lu_gp_id, |
2366 | &target_lu_gp_attr_members, | |
c66ac9db NB |
2367 | NULL, |
2368 | }; | |
2369 | ||
1f6fe7cb NB |
2370 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2371 | { | |
2372 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2373 | struct t10_alua_lu_gp, lu_gp_group); | |
2374 | ||
2375 | core_alua_free_lu_gp(lu_gp); | |
2376 | } | |
2377 | ||
c66ac9db | 2378 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2379 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2380 | }; |
2381 | ||
ece550b5 | 2382 | static const struct config_item_type target_core_alua_lu_gp_cit = { |
c66ac9db NB |
2383 | .ct_item_ops = &target_core_alua_lu_gp_ops, |
2384 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2385 | .ct_owner = THIS_MODULE, | |
2386 | }; | |
2387 | ||
2388 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2389 | ||
2390 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2391 | ||
2392 | static struct config_group *target_core_alua_create_lu_gp( | |
2393 | struct config_group *group, | |
2394 | const char *name) | |
2395 | { | |
2396 | struct t10_alua_lu_gp *lu_gp; | |
2397 | struct config_group *alua_lu_gp_cg = NULL; | |
2398 | struct config_item *alua_lu_gp_ci = NULL; | |
2399 | ||
2400 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2401 | if (IS_ERR(lu_gp)) | |
2402 | return NULL; | |
2403 | ||
2404 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2405 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2406 | ||
2407 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2408 | &target_core_alua_lu_gp_cit); | |
2409 | ||
6708bb27 | 2410 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2411 | " Group: core/alua/lu_gps/%s\n", |
2412 | config_item_name(alua_lu_gp_ci)); | |
2413 | ||
2414 | return alua_lu_gp_cg; | |
2415 | ||
2416 | } | |
2417 | ||
2418 | static void target_core_alua_drop_lu_gp( | |
2419 | struct config_group *group, | |
2420 | struct config_item *item) | |
2421 | { | |
2422 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2423 | struct t10_alua_lu_gp, lu_gp_group); | |
2424 | ||
6708bb27 | 2425 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2426 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2427 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2428 | /* |
2429 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2430 | * -> target_core_alua_lu_gp_release() | |
2431 | */ | |
c66ac9db | 2432 | config_item_put(item); |
c66ac9db NB |
2433 | } |
2434 | ||
2435 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2436 | .make_group = &target_core_alua_create_lu_gp, | |
2437 | .drop_item = &target_core_alua_drop_lu_gp, | |
2438 | }; | |
2439 | ||
ece550b5 | 2440 | static const struct config_item_type target_core_alua_lu_gps_cit = { |
c66ac9db NB |
2441 | .ct_item_ops = NULL, |
2442 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2443 | .ct_owner = THIS_MODULE, | |
2444 | }; | |
2445 | ||
2446 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2447 | ||
2448 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2449 | ||
2eafd729 CH |
2450 | static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) |
2451 | { | |
2452 | return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, | |
2453 | tg_pt_gp_group); | |
2454 | } | |
c66ac9db | 2455 | |
2eafd729 CH |
2456 | static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, |
2457 | char *page) | |
c66ac9db NB |
2458 | { |
2459 | return sprintf(page, "%d\n", | |
d19c4643 | 2460 | to_tg_pt_gp(item)->tg_pt_gp_alua_access_state); |
c66ac9db NB |
2461 | } |
2462 | ||
2eafd729 CH |
2463 | static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, |
2464 | const char *page, size_t count) | |
c66ac9db | 2465 | { |
2eafd729 | 2466 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
0fd97ccf | 2467 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2468 | unsigned long tmp; |
2469 | int new_state, ret; | |
2470 | ||
6708bb27 | 2471 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2472 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2473 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2474 | return -EINVAL; | |
2475 | } | |
cb0f32e1 | 2476 | if (!target_dev_configured(dev)) { |
f1453773 NB |
2477 | pr_err("Unable to set alua_access_state while device is" |
2478 | " not configured\n"); | |
2479 | return -ENODEV; | |
2480 | } | |
c66ac9db | 2481 | |
57103d7f | 2482 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2483 | if (ret < 0) { |
6708bb27 | 2484 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2485 | " %s\n", page); |
57103d7f | 2486 | return ret; |
c66ac9db NB |
2487 | } |
2488 | new_state = (int)tmp; | |
2489 | ||
125d0119 HR |
2490 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2491 | pr_err("Unable to process implicit configfs ALUA" | |
2492 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2493 | return -EINVAL; |
2494 | } | |
c66094bf HR |
2495 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
2496 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
2497 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
2498 | pr_err("Unable to process implicit configfs ALUA transition" | |
2499 | " while explicit ALUA management is enabled\n"); | |
2500 | return -EINVAL; | |
2501 | } | |
c66ac9db | 2502 | |
0fd97ccf | 2503 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2504 | NULL, NULL, new_state, 0); |
2505 | return (!ret) ? count : -EINVAL; | |
2506 | } | |
2507 | ||
2eafd729 CH |
2508 | static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, |
2509 | char *page) | |
c66ac9db | 2510 | { |
2eafd729 | 2511 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2512 | return sprintf(page, "%s\n", |
2513 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2514 | } | |
2515 | ||
2eafd729 CH |
2516 | static ssize_t target_tg_pt_gp_alua_access_status_store( |
2517 | struct config_item *item, const char *page, size_t count) | |
c66ac9db | 2518 | { |
2eafd729 | 2519 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2520 | unsigned long tmp; |
2521 | int new_status, ret; | |
2522 | ||
6708bb27 AG |
2523 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2524 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2525 | " valid tg_pt_gp ID: %hu\n", |
2526 | tg_pt_gp->tg_pt_gp_valid_id); | |
2527 | return -EINVAL; | |
2528 | } | |
2529 | ||
57103d7f | 2530 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2531 | if (ret < 0) { |
6708bb27 | 2532 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2533 | " from %s\n", page); |
57103d7f | 2534 | return ret; |
c66ac9db NB |
2535 | } |
2536 | new_status = (int)tmp; | |
2537 | ||
2538 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2539 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2540 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2541 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2542 | new_status); |
2543 | return -EINVAL; | |
2544 | } | |
2545 | ||
2546 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2547 | return count; | |
2548 | } | |
2549 | ||
2eafd729 CH |
2550 | static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, |
2551 | char *page) | |
c66ac9db | 2552 | { |
2eafd729 | 2553 | return core_alua_show_access_type(to_tg_pt_gp(item), page); |
c66ac9db NB |
2554 | } |
2555 | ||
2eafd729 CH |
2556 | static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, |
2557 | const char *page, size_t count) | |
c66ac9db | 2558 | { |
2eafd729 | 2559 | return core_alua_store_access_type(to_tg_pt_gp(item), page, count); |
c66ac9db NB |
2560 | } |
2561 | ||
2eafd729 CH |
2562 | #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ |
2563 | static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ | |
2564 | struct config_item *item, char *p) \ | |
b0a382c5 | 2565 | { \ |
2eafd729 CH |
2566 | struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ |
2567 | return sprintf(p, "%d\n", \ | |
2568 | !!(t->tg_pt_gp_alua_supported_states & _bit)); \ | |
2569 | } \ | |
2570 | \ | |
2571 | static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ | |
2572 | struct config_item *item, const char *p, size_t c) \ | |
b0a382c5 | 2573 | { \ |
2eafd729 | 2574 | struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ |
b0a382c5 HR |
2575 | unsigned long tmp; \ |
2576 | int ret; \ | |
2577 | \ | |
2578 | if (!t->tg_pt_gp_valid_id) { \ | |
c0dcafd8 | 2579 | pr_err("Unable to do set " #_name " ALUA state on non" \ |
b0a382c5 HR |
2580 | " valid tg_pt_gp ID: %hu\n", \ |
2581 | t->tg_pt_gp_valid_id); \ | |
2582 | return -EINVAL; \ | |
2583 | } \ | |
2584 | \ | |
2585 | ret = kstrtoul(p, 0, &tmp); \ | |
2586 | if (ret < 0) { \ | |
2587 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2588 | return -EINVAL; \ | |
2589 | } \ | |
2590 | if (tmp > 1) { \ | |
2591 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2592 | return -EINVAL; \ | |
2593 | } \ | |
1f0b030c | 2594 | if (tmp) \ |
2eafd729 | 2595 | t->tg_pt_gp_alua_supported_states |= _bit; \ |
b0a382c5 | 2596 | else \ |
2eafd729 | 2597 | t->tg_pt_gp_alua_supported_states &= ~_bit; \ |
b0a382c5 HR |
2598 | \ |
2599 | return c; \ | |
2600 | } | |
2601 | ||
2eafd729 CH |
2602 | ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); |
2603 | ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); | |
2604 | ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); | |
2605 | ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); | |
2606 | ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); | |
2607 | ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); | |
2608 | ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); | |
6be526c4 | 2609 | |
2eafd729 CH |
2610 | static ssize_t target_tg_pt_gp_alua_write_metadata_show( |
2611 | struct config_item *item, char *page) | |
c66ac9db | 2612 | { |
2eafd729 CH |
2613 | return sprintf(page, "%d\n", |
2614 | to_tg_pt_gp(item)->tg_pt_gp_write_metadata); | |
c66ac9db NB |
2615 | } |
2616 | ||
2eafd729 CH |
2617 | static ssize_t target_tg_pt_gp_alua_write_metadata_store( |
2618 | struct config_item *item, const char *page, size_t count) | |
c66ac9db | 2619 | { |
2eafd729 | 2620 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2621 | unsigned long tmp; |
2622 | int ret; | |
2623 | ||
57103d7f | 2624 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2625 | if (ret < 0) { |
6708bb27 | 2626 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2627 | return ret; |
c66ac9db NB |
2628 | } |
2629 | ||
2630 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2631 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2632 | " %lu\n", tmp); |
2633 | return -EINVAL; | |
2634 | } | |
2635 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2636 | ||
2637 | return count; | |
2638 | } | |
2639 | ||
2eafd729 CH |
2640 | static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, |
2641 | char *page) | |
c66ac9db | 2642 | { |
2eafd729 | 2643 | return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); |
c66ac9db NB |
2644 | } |
2645 | ||
2eafd729 CH |
2646 | static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, |
2647 | const char *page, size_t count) | |
c66ac9db | 2648 | { |
2eafd729 CH |
2649 | return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, |
2650 | count); | |
c66ac9db NB |
2651 | } |
2652 | ||
2eafd729 CH |
2653 | static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, |
2654 | char *page) | |
c66ac9db | 2655 | { |
2eafd729 | 2656 | return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); |
c66ac9db NB |
2657 | } |
2658 | ||
2eafd729 CH |
2659 | static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, |
2660 | const char *page, size_t count) | |
c66ac9db | 2661 | { |
2eafd729 CH |
2662 | return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, |
2663 | count); | |
c66ac9db NB |
2664 | } |
2665 | ||
2eafd729 CH |
2666 | static ssize_t target_tg_pt_gp_implicit_trans_secs_show( |
2667 | struct config_item *item, char *page) | |
5b9a4d72 | 2668 | { |
2eafd729 | 2669 | return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); |
5b9a4d72 NB |
2670 | } |
2671 | ||
2eafd729 CH |
2672 | static ssize_t target_tg_pt_gp_implicit_trans_secs_store( |
2673 | struct config_item *item, const char *page, size_t count) | |
5b9a4d72 | 2674 | { |
2eafd729 CH |
2675 | return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, |
2676 | count); | |
5b9a4d72 NB |
2677 | } |
2678 | ||
2eafd729 CH |
2679 | static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, |
2680 | char *page) | |
c66ac9db | 2681 | { |
2eafd729 | 2682 | return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); |
c66ac9db NB |
2683 | } |
2684 | ||
2eafd729 CH |
2685 | static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, |
2686 | const char *page, size_t count) | |
c66ac9db | 2687 | { |
2eafd729 | 2688 | return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); |
c66ac9db NB |
2689 | } |
2690 | ||
2eafd729 CH |
2691 | static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, |
2692 | char *page) | |
c66ac9db | 2693 | { |
2eafd729 CH |
2694 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
2695 | ||
6708bb27 | 2696 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db | 2697 | return 0; |
c66ac9db NB |
2698 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); |
2699 | } | |
2700 | ||
2eafd729 CH |
2701 | static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, |
2702 | const char *page, size_t count) | |
c66ac9db | 2703 | { |
2eafd729 | 2704 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2705 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; |
2706 | unsigned long tg_pt_gp_id; | |
2707 | int ret; | |
2708 | ||
57103d7f | 2709 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2710 | if (ret < 0) { |
3d035237 HR |
2711 | pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n", |
2712 | page); | |
57103d7f | 2713 | return ret; |
c66ac9db NB |
2714 | } |
2715 | if (tg_pt_gp_id > 0x0000ffff) { | |
3d035237 HR |
2716 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum: 0x0000ffff\n", |
2717 | tg_pt_gp_id); | |
c66ac9db NB |
2718 | return -EINVAL; |
2719 | } | |
2720 | ||
2721 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2722 | if (ret < 0) | |
2723 | return -EINVAL; | |
2724 | ||
6708bb27 | 2725 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2726 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2727 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2728 | tg_pt_gp->tg_pt_gp_id); | |
2729 | ||
2730 | return count; | |
2731 | } | |
2732 | ||
2eafd729 CH |
2733 | static ssize_t target_tg_pt_gp_members_show(struct config_item *item, |
2734 | char *page) | |
c66ac9db | 2735 | { |
2eafd729 | 2736 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db | 2737 | struct se_lun *lun; |
c66ac9db NB |
2738 | ssize_t len = 0, cur_len; |
2739 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2740 | ||
2741 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2742 | ||
2743 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
adf653f9 CH |
2744 | list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, |
2745 | lun_tg_pt_gp_link) { | |
2746 | struct se_portal_group *tpg = lun->lun_tpg; | |
c66ac9db NB |
2747 | |
2748 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2749 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2750 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2751 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2752 | config_item_name(&lun->lun_group.cg_item)); |
2753 | cur_len++; /* Extra byte for NULL terminator */ | |
2754 | ||
2755 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2756 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2757 | "_members buffer\n"); |
2758 | break; | |
2759 | } | |
2760 | memcpy(page+len, buf, cur_len); | |
2761 | len += cur_len; | |
2762 | } | |
2763 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2764 | ||
2765 | return len; | |
2766 | } | |
2767 | ||
2eafd729 CH |
2768 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); |
2769 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); | |
2770 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); | |
2771 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); | |
2772 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); | |
2773 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); | |
2774 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); | |
2775 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); | |
2776 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); | |
2777 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); | |
2778 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); | |
2779 | CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); | |
2780 | CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); | |
2781 | CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); | |
2782 | CONFIGFS_ATTR(target_tg_pt_gp_, preferred); | |
2783 | CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); | |
2784 | CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); | |
c66ac9db NB |
2785 | |
2786 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2eafd729 CH |
2787 | &target_tg_pt_gp_attr_alua_access_state, |
2788 | &target_tg_pt_gp_attr_alua_access_status, | |
2789 | &target_tg_pt_gp_attr_alua_access_type, | |
2790 | &target_tg_pt_gp_attr_alua_support_transitioning, | |
2791 | &target_tg_pt_gp_attr_alua_support_offline, | |
2792 | &target_tg_pt_gp_attr_alua_support_lba_dependent, | |
2793 | &target_tg_pt_gp_attr_alua_support_unavailable, | |
2794 | &target_tg_pt_gp_attr_alua_support_standby, | |
2795 | &target_tg_pt_gp_attr_alua_support_active_nonoptimized, | |
2796 | &target_tg_pt_gp_attr_alua_support_active_optimized, | |
2797 | &target_tg_pt_gp_attr_alua_write_metadata, | |
2798 | &target_tg_pt_gp_attr_nonop_delay_msecs, | |
2799 | &target_tg_pt_gp_attr_trans_delay_msecs, | |
2800 | &target_tg_pt_gp_attr_implicit_trans_secs, | |
2801 | &target_tg_pt_gp_attr_preferred, | |
2802 | &target_tg_pt_gp_attr_tg_pt_gp_id, | |
2803 | &target_tg_pt_gp_attr_members, | |
c66ac9db NB |
2804 | NULL, |
2805 | }; | |
2806 | ||
1f6fe7cb NB |
2807 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2808 | { | |
2809 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2810 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2811 | ||
2812 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2813 | } | |
2814 | ||
c66ac9db | 2815 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2816 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2817 | }; |
2818 | ||
ece550b5 | 2819 | static const struct config_item_type target_core_alua_tg_pt_gp_cit = { |
c66ac9db NB |
2820 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, |
2821 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2822 | .ct_owner = THIS_MODULE, | |
2823 | }; | |
2824 | ||
2825 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2826 | ||
72aca57b | 2827 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2828 | |
2829 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2830 | struct config_group *group, | |
2831 | const char *name) | |
2832 | { | |
2833 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2834 | alua_tg_pt_gps_group); | |
2835 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2836 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2837 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2838 | ||
0fd97ccf | 2839 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2840 | if (!tg_pt_gp) |
c66ac9db NB |
2841 | return NULL; |
2842 | ||
2843 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2844 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2845 | ||
2846 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2847 | &target_core_alua_tg_pt_gp_cit); | |
2848 | ||
6708bb27 | 2849 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2850 | " Group: alua/tg_pt_gps/%s\n", |
2851 | config_item_name(alua_tg_pt_gp_ci)); | |
2852 | ||
2853 | return alua_tg_pt_gp_cg; | |
2854 | } | |
2855 | ||
2856 | static void target_core_alua_drop_tg_pt_gp( | |
2857 | struct config_group *group, | |
2858 | struct config_item *item) | |
2859 | { | |
2860 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2861 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2862 | ||
6708bb27 | 2863 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2864 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2865 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2866 | /* |
2867 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2868 | * -> target_core_alua_tg_pt_gp_release(). | |
2869 | */ | |
c66ac9db | 2870 | config_item_put(item); |
c66ac9db NB |
2871 | } |
2872 | ||
2873 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2874 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2875 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2876 | }; | |
2877 | ||
72aca57b | 2878 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 2879 | |
72aca57b | 2880 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2881 | |
2882 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2883 | ||
2884 | /* | |
2885 | * target_core_alua_cit is a ConfigFS group that lives under | |
2886 | * /sys/kernel/config/target/core/alua. There are default groups | |
2887 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2888 | * target_core_alua_cit in target_core_init_configfs() below. | |
2889 | */ | |
ece550b5 | 2890 | static const struct config_item_type target_core_alua_cit = { |
c66ac9db NB |
2891 | .ct_item_ops = NULL, |
2892 | .ct_attrs = NULL, | |
2893 | .ct_owner = THIS_MODULE, | |
2894 | }; | |
2895 | ||
2896 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2897 | ||
d23ab570 | 2898 | /* Start functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 NB |
2899 | |
2900 | static struct config_group *target_core_stat_mkdir( | |
2901 | struct config_group *group, | |
2902 | const char *name) | |
2903 | { | |
2904 | return ERR_PTR(-ENOSYS); | |
2905 | } | |
2906 | ||
2907 | static void target_core_stat_rmdir( | |
2908 | struct config_group *group, | |
2909 | struct config_item *item) | |
2910 | { | |
2911 | return; | |
2912 | } | |
2913 | ||
2914 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2915 | .make_group = &target_core_stat_mkdir, | |
2916 | .drop_item = &target_core_stat_rmdir, | |
2917 | }; | |
2918 | ||
d23ab570 | 2919 | TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); |
12d23384 | 2920 | |
d23ab570 | 2921 | /* End functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 | 2922 | |
c66ac9db NB |
2923 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2924 | ||
2925 | static struct config_group *target_core_make_subdev( | |
2926 | struct config_group *group, | |
2927 | const char *name) | |
2928 | { | |
2929 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2930 | struct config_item *hba_ci = &group->cg_item; |
2931 | struct se_hba *hba = item_to_hba(hba_ci); | |
0a06d430 | 2932 | struct target_backend *tb = hba->backend; |
0fd97ccf | 2933 | struct se_device *dev; |
12d23384 | 2934 | int errno = -ENOMEM, ret; |
c66ac9db | 2935 | |
12d23384 NB |
2936 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2937 | if (ret) | |
2938 | return ERR_PTR(ret); | |
c66ac9db | 2939 | |
0fd97ccf CH |
2940 | dev = target_alloc_device(hba, name); |
2941 | if (!dev) | |
2942 | goto out_unlock; | |
2943 | ||
1ae1602d | 2944 | config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit); |
c66ac9db | 2945 | |
8dc31ff9 MC |
2946 | config_group_init_type_name(&dev->dev_action_group, "action", |
2947 | &tb->tb_dev_action_cit); | |
2948 | configfs_add_default_group(&dev->dev_action_group, &dev->dev_group); | |
2949 | ||
0fd97ccf | 2950 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
0a06d430 | 2951 | &tb->tb_dev_attrib_cit); |
1ae1602d CH |
2952 | configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group); |
2953 | ||
0fd97ccf | 2954 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
0a06d430 | 2955 | &tb->tb_dev_pr_cit); |
1ae1602d CH |
2956 | configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group); |
2957 | ||
0fd97ccf | 2958 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
0a06d430 | 2959 | &tb->tb_dev_wwn_cit); |
1ae1602d CH |
2960 | configfs_add_default_group(&dev->t10_wwn.t10_wwn_group, |
2961 | &dev->dev_group); | |
2962 | ||
0fd97ccf | 2963 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
0a06d430 | 2964 | "alua", &tb->tb_dev_alua_tg_pt_gps_cit); |
1ae1602d CH |
2965 | configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group, |
2966 | &dev->dev_group); | |
2967 | ||
0fd97ccf | 2968 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
0a06d430 | 2969 | "statistics", &tb->tb_dev_stat_cit); |
1ae1602d CH |
2970 | configfs_add_default_group(&dev->dev_stat_grps.stat_group, |
2971 | &dev->dev_group); | |
12d23384 | 2972 | |
c66ac9db | 2973 | /* |
12d23384 | 2974 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2975 | */ |
0fd97ccf | 2976 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2977 | if (!tg_pt_gp) |
1ae1602d | 2978 | goto out_free_device; |
0fd97ccf | 2979 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
c66ac9db | 2980 | |
c66ac9db NB |
2981 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, |
2982 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
1ae1602d CH |
2983 | configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group, |
2984 | &dev->t10_alua.alua_tg_pt_gps_group); | |
2985 | ||
12d23384 NB |
2986 | /* |
2987 | * Add core/$HBA/$DEV/statistics/ default groups | |
2988 | */ | |
0fd97ccf | 2989 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2990 | |
2991 | mutex_unlock(&hba->hba_access_mutex); | |
1ae1602d | 2992 | return &dev->dev_group; |
0fd97ccf | 2993 | |
0fd97ccf CH |
2994 | out_free_device: |
2995 | target_free_device(dev); | |
2996 | out_unlock: | |
c66ac9db | 2997 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2998 | return ERR_PTR(errno); |
c66ac9db NB |
2999 | } |
3000 | ||
3001 | static void target_core_drop_subdev( | |
3002 | struct config_group *group, | |
3003 | struct config_item *item) | |
3004 | { | |
0fd97ccf CH |
3005 | struct config_group *dev_cg = to_config_group(item); |
3006 | struct se_device *dev = | |
3007 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 3008 | struct se_hba *hba; |
c66ac9db | 3009 | |
0fd97ccf | 3010 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 3011 | |
1f6fe7cb | 3012 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 3013 | |
1ae1602d CH |
3014 | configfs_remove_default_groups(&dev->dev_stat_grps.stat_group); |
3015 | configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group); | |
12d23384 | 3016 | |
1f6fe7cb NB |
3017 | /* |
3018 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
3019 | * directly from target_core_alua_tg_pt_gp_release(). | |
3020 | */ | |
0fd97ccf | 3021 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 3022 | |
1ae1602d CH |
3023 | configfs_remove_default_groups(dev_cg); |
3024 | ||
c66ac9db | 3025 | /* |
0fd97ccf | 3026 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 3027 | */ |
1f6fe7cb | 3028 | config_item_put(item); |
c66ac9db | 3029 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
3030 | } |
3031 | ||
3032 | static struct configfs_group_operations target_core_hba_group_ops = { | |
3033 | .make_group = target_core_make_subdev, | |
3034 | .drop_item = target_core_drop_subdev, | |
3035 | }; | |
3036 | ||
c66ac9db | 3037 | |
2eafd729 CH |
3038 | static inline struct se_hba *to_hba(struct config_item *item) |
3039 | { | |
3040 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
3041 | } | |
c66ac9db | 3042 | |
2eafd729 | 3043 | static ssize_t target_hba_info_show(struct config_item *item, char *page) |
c66ac9db | 3044 | { |
2eafd729 CH |
3045 | struct se_hba *hba = to_hba(item); |
3046 | ||
c66ac9db | 3047 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", |
0a06d430 | 3048 | hba->hba_id, hba->backend->ops->name, |
ce8dd25d | 3049 | TARGET_CORE_VERSION); |
c66ac9db NB |
3050 | } |
3051 | ||
2eafd729 | 3052 | static ssize_t target_hba_mode_show(struct config_item *item, char *page) |
c66ac9db | 3053 | { |
2eafd729 | 3054 | struct se_hba *hba = to_hba(item); |
c66ac9db NB |
3055 | int hba_mode = 0; |
3056 | ||
3057 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
3058 | hba_mode = 1; | |
3059 | ||
3060 | return sprintf(page, "%d\n", hba_mode); | |
3061 | } | |
3062 | ||
2eafd729 CH |
3063 | static ssize_t target_hba_mode_store(struct config_item *item, |
3064 | const char *page, size_t count) | |
c66ac9db | 3065 | { |
2eafd729 | 3066 | struct se_hba *hba = to_hba(item); |
c66ac9db NB |
3067 | unsigned long mode_flag; |
3068 | int ret; | |
3069 | ||
0a06d430 | 3070 | if (hba->backend->ops->pmode_enable_hba == NULL) |
c66ac9db NB |
3071 | return -EINVAL; |
3072 | ||
57103d7f | 3073 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 3074 | if (ret < 0) { |
6708bb27 | 3075 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 3076 | return ret; |
c66ac9db NB |
3077 | } |
3078 | ||
0fd97ccf | 3079 | if (hba->dev_count) { |
6708bb27 | 3080 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
3081 | return -EINVAL; |
3082 | } | |
c66ac9db | 3083 | |
0a06d430 | 3084 | ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); |
c66ac9db NB |
3085 | if (ret < 0) |
3086 | return -EINVAL; | |
3087 | if (ret > 0) | |
3088 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
3089 | else if (ret == 0) | |
3090 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
3091 | ||
3092 | return count; | |
3093 | } | |
3094 | ||
2eafd729 CH |
3095 | CONFIGFS_ATTR_RO(target_, hba_info); |
3096 | CONFIGFS_ATTR(target_, hba_mode); | |
c66ac9db | 3097 | |
1f6fe7cb NB |
3098 | static void target_core_hba_release(struct config_item *item) |
3099 | { | |
3100 | struct se_hba *hba = container_of(to_config_group(item), | |
3101 | struct se_hba, hba_group); | |
3102 | core_delete_hba(hba); | |
3103 | } | |
3104 | ||
c66ac9db | 3105 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2eafd729 CH |
3106 | &target_attr_hba_info, |
3107 | &target_attr_hba_mode, | |
c66ac9db NB |
3108 | NULL, |
3109 | }; | |
3110 | ||
3111 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3112 | .release = target_core_hba_release, |
c66ac9db NB |
3113 | }; |
3114 | ||
ece550b5 | 3115 | static const struct config_item_type target_core_hba_cit = { |
c66ac9db NB |
3116 | .ct_item_ops = &target_core_hba_item_ops, |
3117 | .ct_group_ops = &target_core_hba_group_ops, | |
3118 | .ct_attrs = target_core_hba_attrs, | |
3119 | .ct_owner = THIS_MODULE, | |
3120 | }; | |
3121 | ||
3122 | static struct config_group *target_core_call_addhbatotarget( | |
3123 | struct config_group *group, | |
3124 | const char *name) | |
3125 | { | |
3126 | char *se_plugin_str, *str, *str2; | |
3127 | struct se_hba *hba; | |
3128 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3129 | unsigned long plugin_dep_id = 0; | |
3130 | int ret; | |
3131 | ||
3132 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3133 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3134 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3135 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3136 | TARGET_CORE_NAME_MAX_LEN); | |
3137 | return ERR_PTR(-ENAMETOOLONG); | |
3138 | } | |
3139 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3140 | ||
3141 | str = strstr(buf, "_"); | |
6708bb27 AG |
3142 | if (!str) { |
3143 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3144 | return ERR_PTR(-EINVAL); |
3145 | } | |
3146 | se_plugin_str = buf; | |
3147 | /* | |
3148 | * Special case for subsystem plugins that have "_" in their names. | |
3149 | * Namely rd_direct and rd_mcp.. | |
3150 | */ | |
3151 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3152 | if (str2) { |
c66ac9db NB |
3153 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3154 | str2++; /* Skip to start of plugin dependent ID */ | |
3155 | str = str2; | |
3156 | } else { | |
3157 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3158 | str++; /* Skip to start of plugin dependent ID */ | |
3159 | } | |
3160 | ||
57103d7f | 3161 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 3162 | if (ret < 0) { |
57103d7f | 3163 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 3164 | " plugin_dep_id\n", ret); |
57103d7f | 3165 | return ERR_PTR(ret); |
c66ac9db NB |
3166 | } |
3167 | /* | |
3168 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3169 | */ | |
dbc5623e | 3170 | transport_subsystem_check_init(); |
c66ac9db NB |
3171 | |
3172 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3173 | if (IS_ERR(hba)) | |
3174 | return ERR_CAST(hba); | |
3175 | ||
3176 | config_group_init_type_name(&hba->hba_group, name, | |
3177 | &target_core_hba_cit); | |
3178 | ||
3179 | return &hba->hba_group; | |
3180 | } | |
3181 | ||
3182 | static void target_core_call_delhbafromtarget( | |
3183 | struct config_group *group, | |
3184 | struct config_item *item) | |
3185 | { | |
1f6fe7cb NB |
3186 | /* |
3187 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3188 | * -> target_core_hba_release() | |
3189 | */ | |
c66ac9db | 3190 | config_item_put(item); |
c66ac9db NB |
3191 | } |
3192 | ||
3193 | static struct configfs_group_operations target_core_group_ops = { | |
3194 | .make_group = target_core_call_addhbatotarget, | |
3195 | .drop_item = target_core_call_delhbafromtarget, | |
3196 | }; | |
3197 | ||
ece550b5 | 3198 | static const struct config_item_type target_core_cit = { |
c66ac9db NB |
3199 | .ct_item_ops = NULL, |
3200 | .ct_group_ops = &target_core_group_ops, | |
3201 | .ct_attrs = NULL, | |
3202 | .ct_owner = THIS_MODULE, | |
3203 | }; | |
3204 | ||
3205 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3206 | ||
0a06d430 | 3207 | void target_setup_backend_cits(struct target_backend *tb) |
73112edc | 3208 | { |
0a06d430 | 3209 | target_core_setup_dev_cit(tb); |
8dc31ff9 | 3210 | target_core_setup_dev_action_cit(tb); |
0a06d430 CH |
3211 | target_core_setup_dev_attrib_cit(tb); |
3212 | target_core_setup_dev_pr_cit(tb); | |
3213 | target_core_setup_dev_wwn_cit(tb); | |
3214 | target_core_setup_dev_alua_tg_pt_gps_cit(tb); | |
3215 | target_core_setup_dev_stat_cit(tb); | |
73112edc | 3216 | } |
73112edc | 3217 | |
78a6295c LD |
3218 | static void target_init_dbroot(void) |
3219 | { | |
3220 | struct file *fp; | |
3221 | ||
3222 | snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED); | |
3223 | fp = filp_open(db_root_stage, O_RDONLY, 0); | |
3224 | if (IS_ERR(fp)) { | |
3225 | pr_err("db_root: cannot open: %s\n", db_root_stage); | |
3226 | return; | |
3227 | } | |
3228 | if (!S_ISDIR(file_inode(fp)->i_mode)) { | |
3229 | filp_close(fp, NULL); | |
3230 | pr_err("db_root: not a valid directory: %s\n", db_root_stage); | |
3231 | return; | |
3232 | } | |
3233 | filp_close(fp, NULL); | |
3234 | ||
3235 | strncpy(db_root, db_root_stage, DB_ROOT_LEN); | |
3236 | pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); | |
3237 | } | |
3238 | ||
54550fab | 3239 | static int __init target_core_init_configfs(void) |
c66ac9db | 3240 | { |
d588cf8f | 3241 | struct configfs_subsystem *subsys = &target_core_fabrics; |
c66ac9db NB |
3242 | struct t10_alua_lu_gp *lu_gp; |
3243 | int ret; | |
3244 | ||
6708bb27 | 3245 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3246 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3247 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3248 | ||
c66ac9db NB |
3249 | config_group_init(&subsys->su_group); |
3250 | mutex_init(&subsys->su_mutex); | |
3251 | ||
e3d6f909 | 3252 | ret = init_se_kmem_caches(); |
c66ac9db | 3253 | if (ret < 0) |
e3d6f909 | 3254 | return ret; |
c66ac9db NB |
3255 | /* |
3256 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3257 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3258 | */ | |
1ae1602d CH |
3259 | config_group_init_type_name(&target_core_hbagroup, "core", |
3260 | &target_core_cit); | |
3261 | configfs_add_default_group(&target_core_hbagroup, &subsys->su_group); | |
c66ac9db | 3262 | |
c66ac9db NB |
3263 | /* |
3264 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3265 | */ | |
1ae1602d CH |
3266 | config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit); |
3267 | configfs_add_default_group(&alua_group, &target_core_hbagroup); | |
3268 | ||
c66ac9db NB |
3269 | /* |
3270 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3271 | * groups under /sys/kernel/config/target/core/alua/ | |
3272 | */ | |
1ae1602d CH |
3273 | config_group_init_type_name(&alua_lu_gps_group, "lu_gps", |
3274 | &target_core_alua_lu_gps_cit); | |
3275 | configfs_add_default_group(&alua_lu_gps_group, &alua_group); | |
c66ac9db | 3276 | |
c66ac9db NB |
3277 | /* |
3278 | * Add core/alua/lu_gps/default_lu_gp | |
3279 | */ | |
3280 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
3281 | if (IS_ERR(lu_gp)) { |
3282 | ret = -ENOMEM; | |
c66ac9db | 3283 | goto out_global; |
37bb7899 | 3284 | } |
c66ac9db | 3285 | |
c66ac9db NB |
3286 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", |
3287 | &target_core_alua_lu_gp_cit); | |
1ae1602d CH |
3288 | configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group); |
3289 | ||
e3d6f909 | 3290 | default_lu_gp = lu_gp; |
1ae1602d | 3291 | |
c66ac9db NB |
3292 | /* |
3293 | * Register the target_core_mod subsystem with configfs. | |
3294 | */ | |
3295 | ret = configfs_register_subsystem(subsys); | |
3296 | if (ret < 0) { | |
6708bb27 | 3297 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3298 | ret, subsys->su_group.cg_item.ci_namebuf); |
3299 | goto out_global; | |
3300 | } | |
6708bb27 | 3301 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
ce8dd25d | 3302 | " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" |
c66ac9db NB |
3303 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); |
3304 | /* | |
3305 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3306 | */ | |
3307 | ret = rd_module_init(); | |
3308 | if (ret < 0) | |
3309 | goto out; | |
3310 | ||
0d0f9dfb RD |
3311 | ret = core_dev_setup_virtual_lun0(); |
3312 | if (ret < 0) | |
c66ac9db NB |
3313 | goto out; |
3314 | ||
f99715ac NB |
3315 | ret = target_xcopy_setup_pt(); |
3316 | if (ret < 0) | |
3317 | goto out; | |
3318 | ||
78a6295c LD |
3319 | target_init_dbroot(); |
3320 | ||
c66ac9db NB |
3321 | return 0; |
3322 | ||
3323 | out: | |
3324 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3325 | core_dev_release_virtual_lun0(); |
3326 | rd_module_exit(); | |
3327 | out_global: | |
e3d6f909 AG |
3328 | if (default_lu_gp) { |
3329 | core_alua_free_lu_gp(default_lu_gp); | |
3330 | default_lu_gp = NULL; | |
c66ac9db | 3331 | } |
e3d6f909 AG |
3332 | release_se_kmem_caches(); |
3333 | return ret; | |
c66ac9db NB |
3334 | } |
3335 | ||
54550fab | 3336 | static void __exit target_core_exit_configfs(void) |
c66ac9db | 3337 | { |
1ae1602d CH |
3338 | configfs_remove_default_groups(&alua_lu_gps_group); |
3339 | configfs_remove_default_groups(&alua_group); | |
3340 | configfs_remove_default_groups(&target_core_hbagroup); | |
c66ac9db | 3341 | |
7c2bf6e9 NB |
3342 | /* |
3343 | * We expect subsys->su_group.default_groups to be released | |
3344 | * by configfs subsystem provider logic.. | |
3345 | */ | |
d588cf8f | 3346 | configfs_unregister_subsystem(&target_core_fabrics); |
c66ac9db | 3347 | |
e3d6f909 AG |
3348 | core_alua_free_lu_gp(default_lu_gp); |
3349 | default_lu_gp = NULL; | |
7c2bf6e9 | 3350 | |
6708bb27 | 3351 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3352 | " Infrastructure\n"); |
3353 | ||
c66ac9db NB |
3354 | core_dev_release_virtual_lun0(); |
3355 | rd_module_exit(); | |
f99715ac | 3356 | target_xcopy_release_pt(); |
e3d6f909 | 3357 | release_se_kmem_caches(); |
c66ac9db NB |
3358 | } |
3359 | ||
3360 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3361 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3362 | MODULE_LICENSE("GPL"); | |
3363 | ||
3364 | module_init(target_core_init_configfs); | |
3365 | module_exit(target_core_exit_configfs); |