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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 NB |
101 | |
102 | static struct target_fabric_configfs *target_core_get_fabric( | |
103 | const char *name) | |
104 | { | |
105 | struct target_fabric_configfs *tf; | |
106 | ||
6708bb27 | 107 | if (!name) |
c66ac9db NB |
108 | return NULL; |
109 | ||
110 | mutex_lock(&g_tf_lock); | |
111 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
0dc2e8d1 | 112 | if (!strcmp(tf->tf_ops->name, name)) { |
c66ac9db NB |
113 | atomic_inc(&tf->tf_access_cnt); |
114 | mutex_unlock(&g_tf_lock); | |
115 | return tf; | |
116 | } | |
117 | } | |
118 | mutex_unlock(&g_tf_lock); | |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
123 | /* | |
124 | * Called from struct target_core_group_ops->make_group() | |
125 | */ | |
126 | static struct config_group *target_core_register_fabric( | |
127 | struct config_group *group, | |
128 | const char *name) | |
129 | { | |
130 | struct target_fabric_configfs *tf; | |
131 | int ret; | |
132 | ||
6708bb27 | 133 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 134 | " %s\n", group, name); |
e7b7af6e RD |
135 | |
136 | tf = target_core_get_fabric(name); | |
137 | if (!tf) { | |
62554910 NB |
138 | pr_debug("target_core_register_fabric() trying autoload for %s\n", |
139 | name); | |
e7b7af6e | 140 | |
c66ac9db | 141 | /* |
e7b7af6e RD |
142 | * Below are some hardcoded request_module() calls to automatically |
143 | * local fabric modules when the following is called: | |
c66ac9db | 144 | * |
e7b7af6e | 145 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 146 | * |
e7b7af6e RD |
147 | * Note that this does not limit which TCM fabric module can be |
148 | * registered, but simply provids auto loading logic for modules with | |
149 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 150 | */ |
e7b7af6e RD |
151 | |
152 | if (!strncmp(name, "iscsi", 5)) { | |
153 | /* | |
154 | * Automatically load the LIO Target fabric module when the | |
155 | * following is called: | |
156 | * | |
157 | * mkdir -p $CONFIGFS/target/iscsi | |
158 | */ | |
159 | ret = request_module("iscsi_target_mod"); | |
160 | if (ret < 0) { | |
62554910 NB |
161 | pr_debug("request_module() failed for" |
162 | " iscsi_target_mod.ko: %d\n", ret); | |
e7b7af6e RD |
163 | return ERR_PTR(-EINVAL); |
164 | } | |
165 | } else if (!strncmp(name, "loopback", 8)) { | |
166 | /* | |
167 | * Automatically load the tcm_loop fabric module when the | |
168 | * following is called: | |
169 | * | |
170 | * mkdir -p $CONFIGFS/target/loopback | |
171 | */ | |
172 | ret = request_module("tcm_loop"); | |
173 | if (ret < 0) { | |
62554910 NB |
174 | pr_debug("request_module() failed for" |
175 | " tcm_loop.ko: %d\n", ret); | |
e7b7af6e RD |
176 | return ERR_PTR(-EINVAL); |
177 | } | |
c66ac9db | 178 | } |
e7b7af6e RD |
179 | |
180 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
181 | } |
182 | ||
6708bb27 | 183 | if (!tf) { |
62554910 NB |
184 | pr_debug("target_core_get_fabric() failed for %s\n", |
185 | name); | |
c66ac9db NB |
186 | return ERR_PTR(-EINVAL); |
187 | } | |
6708bb27 | 188 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
0dc2e8d1 | 189 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
190 | /* |
191 | * On a successful target_core_get_fabric() look, the returned | |
192 | * struct target_fabric_configfs *tf will contain a usage reference. | |
193 | */ | |
6708bb27 | 194 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
968ebe75 | 195 | &tf->tf_wwn_cit); |
c66ac9db NB |
196 | |
197 | tf->tf_group.default_groups = tf->tf_default_groups; | |
198 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
199 | tf->tf_group.default_groups[1] = NULL; | |
200 | ||
968ebe75 | 201 | config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); |
c66ac9db | 202 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
968ebe75 | 203 | &tf->tf_discovery_cit); |
c66ac9db | 204 | |
6708bb27 | 205 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db | 206 | " %s\n", tf->tf_group.cg_item.ci_name); |
c66ac9db NB |
207 | return &tf->tf_group; |
208 | } | |
209 | ||
210 | /* | |
211 | * Called from struct target_core_group_ops->drop_item() | |
212 | */ | |
213 | static void target_core_deregister_fabric( | |
214 | struct config_group *group, | |
215 | struct config_item *item) | |
216 | { | |
217 | struct target_fabric_configfs *tf = container_of( | |
218 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
219 | struct config_group *tf_group; | |
220 | struct config_item *df_item; | |
221 | int i; | |
222 | ||
6708bb27 | 223 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
224 | " tf list\n", config_item_name(item)); |
225 | ||
6708bb27 | 226 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
0dc2e8d1 | 227 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
228 | atomic_dec(&tf->tf_access_cnt); |
229 | ||
6708bb27 | 230 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
231 | " %s\n", config_item_name(item)); |
232 | ||
233 | tf_group = &tf->tf_group; | |
234 | for (i = 0; tf_group->default_groups[i]; i++) { | |
235 | df_item = &tf_group->default_groups[i]->cg_item; | |
236 | tf_group->default_groups[i] = NULL; | |
237 | config_item_put(df_item); | |
238 | } | |
239 | config_item_put(item); | |
240 | } | |
241 | ||
242 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
243 | .make_group = &target_core_register_fabric, | |
244 | .drop_item = &target_core_deregister_fabric, | |
245 | }; | |
246 | ||
247 | /* | |
248 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
249 | */ | |
250 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
251 | &target_core_item_attr_version, | |
252 | NULL, | |
253 | }; | |
254 | ||
255 | /* | |
256 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
257 | */ | |
258 | static struct config_item_type target_core_fabrics_item = { | |
c66ac9db NB |
259 | .ct_group_ops = &target_core_fabric_group_ops, |
260 | .ct_attrs = target_core_fabric_item_attrs, | |
261 | .ct_owner = THIS_MODULE, | |
262 | }; | |
263 | ||
264 | static struct configfs_subsystem target_core_fabrics = { | |
265 | .su_group = { | |
266 | .cg_item = { | |
267 | .ci_namebuf = "target", | |
268 | .ci_type = &target_core_fabrics_item, | |
269 | }, | |
270 | }, | |
271 | }; | |
272 | ||
d588cf8f CH |
273 | int target_depend_item(struct config_item *item) |
274 | { | |
275 | return configfs_depend_item(&target_core_fabrics, item); | |
276 | } | |
277 | EXPORT_SYMBOL(target_depend_item); | |
278 | ||
279 | void target_undepend_item(struct config_item *item) | |
280 | { | |
9a9e3415 | 281 | return configfs_undepend_item(item); |
d588cf8f CH |
282 | } |
283 | EXPORT_SYMBOL(target_undepend_item); | |
c66ac9db NB |
284 | |
285 | /*############################################################################## | |
286 | // Start functions called by external Target Fabrics Modules | |
287 | //############################################################################*/ | |
288 | ||
9ac8928e | 289 | static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) |
c66ac9db | 290 | { |
9ac8928e CH |
291 | if (!tfo->name) { |
292 | pr_err("Missing tfo->name\n"); | |
293 | return -EINVAL; | |
c66ac9db | 294 | } |
9ac8928e | 295 | if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 296 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
9ac8928e CH |
297 | "_NAME_SIZE\n", tfo->name); |
298 | return -EINVAL; | |
c66ac9db | 299 | } |
6708bb27 AG |
300 | if (!tfo->get_fabric_name) { |
301 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
302 | return -EINVAL; |
303 | } | |
6708bb27 AG |
304 | if (!tfo->tpg_get_wwn) { |
305 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
306 | return -EINVAL; |
307 | } | |
6708bb27 AG |
308 | if (!tfo->tpg_get_tag) { |
309 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
310 | return -EINVAL; |
311 | } | |
6708bb27 AG |
312 | if (!tfo->tpg_check_demo_mode) { |
313 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
314 | return -EINVAL; |
315 | } | |
6708bb27 AG |
316 | if (!tfo->tpg_check_demo_mode_cache) { |
317 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
318 | return -EINVAL; |
319 | } | |
6708bb27 AG |
320 | if (!tfo->tpg_check_demo_mode_write_protect) { |
321 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
322 | return -EINVAL; |
323 | } | |
6708bb27 AG |
324 | if (!tfo->tpg_check_prod_mode_write_protect) { |
325 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
326 | return -EINVAL; |
327 | } | |
6708bb27 AG |
328 | if (!tfo->tpg_get_inst_index) { |
329 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
330 | return -EINVAL; |
331 | } | |
35462975 | 332 | if (!tfo->release_cmd) { |
6708bb27 | 333 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
334 | return -EINVAL; |
335 | } | |
6708bb27 AG |
336 | if (!tfo->shutdown_session) { |
337 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
338 | return -EINVAL; |
339 | } | |
6708bb27 AG |
340 | if (!tfo->close_session) { |
341 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
342 | return -EINVAL; |
343 | } | |
6708bb27 AG |
344 | if (!tfo->sess_get_index) { |
345 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
346 | return -EINVAL; |
347 | } | |
6708bb27 AG |
348 | if (!tfo->write_pending) { |
349 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
350 | return -EINVAL; |
351 | } | |
6708bb27 AG |
352 | if (!tfo->write_pending_status) { |
353 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
354 | return -EINVAL; |
355 | } | |
6708bb27 AG |
356 | if (!tfo->set_default_node_attributes) { |
357 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
358 | return -EINVAL; |
359 | } | |
6708bb27 AG |
360 | if (!tfo->get_cmd_state) { |
361 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
362 | return -EINVAL; |
363 | } | |
6708bb27 AG |
364 | if (!tfo->queue_data_in) { |
365 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
366 | return -EINVAL; |
367 | } | |
6708bb27 AG |
368 | if (!tfo->queue_status) { |
369 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
370 | return -EINVAL; |
371 | } | |
6708bb27 AG |
372 | if (!tfo->queue_tm_rsp) { |
373 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
374 | return -EINVAL; |
375 | } | |
131e6abc NB |
376 | if (!tfo->aborted_task) { |
377 | pr_err("Missing tfo->aborted_task()\n"); | |
378 | return -EINVAL; | |
379 | } | |
c66ac9db NB |
380 | /* |
381 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
382 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
383 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
384 | */ | |
6708bb27 AG |
385 | if (!tfo->fabric_make_wwn) { |
386 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
387 | return -EINVAL; |
388 | } | |
6708bb27 AG |
389 | if (!tfo->fabric_drop_wwn) { |
390 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
391 | return -EINVAL; |
392 | } | |
6708bb27 AG |
393 | if (!tfo->fabric_make_tpg) { |
394 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
395 | return -EINVAL; |
396 | } | |
6708bb27 AG |
397 | if (!tfo->fabric_drop_tpg) { |
398 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
399 | return -EINVAL; |
400 | } | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
9ac8928e | 405 | int target_register_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 406 | { |
9ac8928e | 407 | struct target_fabric_configfs *tf; |
c66ac9db NB |
408 | int ret; |
409 | ||
9ac8928e CH |
410 | ret = target_fabric_tf_ops_check(fo); |
411 | if (ret) | |
412 | return ret; | |
413 | ||
414 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 415 | if (!tf) { |
9ac8928e CH |
416 | pr_err("%s: could not allocate memory!\n", __func__); |
417 | return -ENOMEM; | |
c66ac9db | 418 | } |
c66ac9db | 419 | |
9ac8928e CH |
420 | INIT_LIST_HEAD(&tf->tf_list); |
421 | atomic_set(&tf->tf_access_cnt, 0); | |
ef0caf8d | 422 | tf->tf_ops = fo; |
9ac8928e CH |
423 | target_fabric_setup_cits(tf); |
424 | ||
425 | mutex_lock(&g_tf_lock); | |
426 | list_add_tail(&tf->tf_list, &g_tf_list); | |
427 | mutex_unlock(&g_tf_lock); | |
428 | ||
c66ac9db NB |
429 | return 0; |
430 | } | |
9ac8928e | 431 | EXPORT_SYMBOL(target_register_template); |
c66ac9db | 432 | |
9ac8928e | 433 | void target_unregister_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 434 | { |
9ac8928e | 435 | struct target_fabric_configfs *t; |
c66ac9db | 436 | |
c66ac9db | 437 | mutex_lock(&g_tf_lock); |
9ac8928e | 438 | list_for_each_entry(t, &g_tf_list, tf_list) { |
0dc2e8d1 | 439 | if (!strcmp(t->tf_ops->name, fo->name)) { |
9ac8928e CH |
440 | BUG_ON(atomic_read(&t->tf_access_cnt)); |
441 | list_del(&t->tf_list); | |
94509182 NB |
442 | mutex_unlock(&g_tf_lock); |
443 | /* | |
444 | * Wait for any outstanding fabric se_deve_entry->rcu_head | |
445 | * callbacks to complete post kfree_rcu(), before allowing | |
446 | * fabric driver unload of TFO->module to proceed. | |
447 | */ | |
448 | rcu_barrier(); | |
9ac8928e | 449 | kfree(t); |
94509182 | 450 | return; |
9ac8928e | 451 | } |
c66ac9db | 452 | } |
c66ac9db | 453 | mutex_unlock(&g_tf_lock); |
c66ac9db | 454 | } |
9ac8928e | 455 | EXPORT_SYMBOL(target_unregister_template); |
c66ac9db NB |
456 | |
457 | /*############################################################################## | |
458 | // Stop functions called by external Target Fabrics Modules | |
459 | //############################################################################*/ | |
460 | ||
2eafd729 CH |
461 | static inline struct se_dev_attrib *to_attrib(struct config_item *item) |
462 | { | |
463 | return container_of(to_config_group(item), struct se_dev_attrib, | |
464 | da_group); | |
465 | } | |
466 | ||
f79a897e | 467 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
2eafd729 CH |
468 | #define DEF_CONFIGFS_ATTRIB_SHOW(_name) \ |
469 | static ssize_t _name##_show(struct config_item *item, char *page) \ | |
5873c4d1 | 470 | { \ |
2eafd729 CH |
471 | return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \ |
472 | } | |
473 | ||
474 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias); | |
475 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo); | |
476 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write); | |
477 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read); | |
478 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache); | |
479 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl); | |
480 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas); | |
481 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); | |
482 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); | |
483 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); | |
484 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); | |
485 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); | |
486 | DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); | |
487 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_format); | |
488 | DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); | |
489 | DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); | |
490 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord); | |
491 | DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl); | |
492 | DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size); | |
493 | DEF_CONFIGFS_ATTRIB_SHOW(block_size); | |
494 | DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors); | |
495 | DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors); | |
496 | DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth); | |
497 | DEF_CONFIGFS_ATTRIB_SHOW(queue_depth); | |
498 | DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count); | |
499 | DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count); | |
500 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity); | |
501 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment); | |
502 | DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); | |
503 | ||
504 | #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ | |
505 | static ssize_t _name##_store(struct config_item *item, const char *page,\ | |
3effdb90 | 506 | size_t count) \ |
5873c4d1 | 507 | { \ |
2eafd729 | 508 | struct se_dev_attrib *da = to_attrib(item); \ |
3effdb90 | 509 | u32 val; \ |
5873c4d1 CH |
510 | int ret; \ |
511 | \ | |
3effdb90 CH |
512 | ret = kstrtou32(page, 0, &val); \ |
513 | if (ret < 0) \ | |
514 | return ret; \ | |
515 | da->_name = val; \ | |
516 | return count; \ | |
517 | } | |
518 | ||
2eafd729 CH |
519 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count); |
520 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count); | |
521 | DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity); | |
522 | DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment); | |
523 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len); | |
3effdb90 | 524 | |
2eafd729 CH |
525 | #define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \ |
526 | static ssize_t _name##_store(struct config_item *item, const char *page, \ | |
3effdb90 CH |
527 | size_t count) \ |
528 | { \ | |
2eafd729 | 529 | struct se_dev_attrib *da = to_attrib(item); \ |
3effdb90 CH |
530 | bool flag; \ |
531 | int ret; \ | |
5873c4d1 | 532 | \ |
3effdb90 CH |
533 | ret = strtobool(page, &flag); \ |
534 | if (ret < 0) \ | |
535 | return ret; \ | |
536 | da->_name = flag; \ | |
537 | return count; \ | |
538 | } | |
539 | ||
2eafd729 CH |
540 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); |
541 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); | |
542 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); | |
543 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); | |
544 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); | |
3effdb90 | 545 | |
2eafd729 CH |
546 | #define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \ |
547 | static ssize_t _name##_store(struct config_item *item, const char *page,\ | |
3effdb90 CH |
548 | size_t count) \ |
549 | { \ | |
550 | printk_once(KERN_WARNING \ | |
551 | "ignoring deprecated ##_name## attribute\n"); \ | |
552 | return count; \ | |
553 | } | |
554 | ||
2eafd729 CH |
555 | DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo); |
556 | DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read); | |
3effdb90 CH |
557 | |
558 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) | |
559 | { | |
560 | const char *configname; | |
561 | ||
562 | configname = config_item_name(&dev->dev_group.cg_item); | |
563 | if (strlen(configname) >= 16) { | |
564 | pr_warn("dev[%p]: Backstore name '%s' is too long for " | |
565 | "INQUIRY_MODEL, truncating to 16 bytes\n", dev, | |
566 | configname); | |
567 | } | |
568 | snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); | |
569 | } | |
570 | ||
2eafd729 | 571 | static ssize_t emulate_model_alias_store(struct config_item *item, |
3effdb90 CH |
572 | const char *page, size_t count) |
573 | { | |
2eafd729 | 574 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
575 | struct se_device *dev = da->da_dev; |
576 | bool flag; | |
577 | int ret; | |
578 | ||
579 | if (dev->export_count) { | |
580 | pr_err("dev[%p]: Unable to change model alias" | |
581 | " while export_count is %d\n", | |
582 | dev, dev->export_count); | |
583 | return -EINVAL; | |
584 | } | |
585 | ||
586 | ret = strtobool(page, &flag); | |
587 | if (ret < 0) | |
588 | return ret; | |
589 | ||
590 | if (flag) { | |
591 | dev_set_t10_wwn_model_alias(dev); | |
592 | } else { | |
593 | strncpy(&dev->t10_wwn.model[0], | |
594 | dev->transport->inquiry_prod, 16); | |
595 | } | |
596 | da->emulate_model_alias = flag; | |
597 | return count; | |
598 | } | |
599 | ||
2eafd729 | 600 | static ssize_t emulate_write_cache_store(struct config_item *item, |
3effdb90 CH |
601 | const char *page, size_t count) |
602 | { | |
2eafd729 | 603 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
604 | bool flag; |
605 | int ret; | |
606 | ||
607 | ret = strtobool(page, &flag); | |
608 | if (ret < 0) | |
609 | return ret; | |
610 | ||
611 | if (flag && da->da_dev->transport->get_write_cache) { | |
612 | pr_err("emulate_write_cache not supported for this device\n"); | |
613 | return -EINVAL; | |
614 | } | |
615 | ||
616 | da->emulate_write_cache = flag; | |
617 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", | |
618 | da->da_dev, flag); | |
619 | return count; | |
620 | } | |
621 | ||
2eafd729 | 622 | static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item, |
3effdb90 CH |
623 | const char *page, size_t count) |
624 | { | |
2eafd729 | 625 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
626 | u32 val; |
627 | int ret; | |
628 | ||
629 | ret = kstrtou32(page, 0, &val); | |
630 | if (ret < 0) | |
631 | return ret; | |
632 | ||
633 | if (val != 0 && val != 1 && val != 2) { | |
634 | pr_err("Illegal value %d\n", val); | |
635 | return -EINVAL; | |
636 | } | |
637 | ||
638 | if (da->da_dev->export_count) { | |
639 | pr_err("dev[%p]: Unable to change SE Device" | |
640 | " UA_INTRLCK_CTRL while export_count is %d\n", | |
641 | da->da_dev, da->da_dev->export_count); | |
642 | return -EINVAL; | |
643 | } | |
644 | da->emulate_ua_intlck_ctrl = val; | |
645 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", | |
646 | da->da_dev, val); | |
647 | return count; | |
648 | } | |
649 | ||
2eafd729 | 650 | static ssize_t emulate_tas_store(struct config_item *item, |
3effdb90 CH |
651 | const char *page, size_t count) |
652 | { | |
2eafd729 | 653 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
654 | bool flag; |
655 | int ret; | |
656 | ||
657 | ret = strtobool(page, &flag); | |
658 | if (ret < 0) | |
659 | return ret; | |
660 | ||
661 | if (da->da_dev->export_count) { | |
662 | pr_err("dev[%p]: Unable to change SE Device TAS while" | |
663 | " export_count is %d\n", | |
664 | da->da_dev, da->da_dev->export_count); | |
665 | return -EINVAL; | |
666 | } | |
667 | da->emulate_tas = flag; | |
668 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", | |
669 | da->da_dev, flag ? "Enabled" : "Disabled"); | |
670 | ||
671 | return count; | |
672 | } | |
673 | ||
2eafd729 | 674 | static ssize_t emulate_tpu_store(struct config_item *item, |
3effdb90 CH |
675 | const char *page, size_t count) |
676 | { | |
2eafd729 | 677 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
678 | bool flag; |
679 | int ret; | |
680 | ||
681 | ret = strtobool(page, &flag); | |
682 | if (ret < 0) | |
683 | return ret; | |
684 | ||
685 | /* | |
686 | * We expect this value to be non-zero when generic Block Layer | |
687 | * Discard supported is detected iblock_create_virtdevice(). | |
688 | */ | |
689 | if (flag && !da->max_unmap_block_desc_count) { | |
690 | pr_err("Generic Block Discard not supported\n"); | |
691 | return -ENOSYS; | |
692 | } | |
693 | ||
694 | da->emulate_tpu = flag; | |
695 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", | |
696 | da->da_dev, flag); | |
697 | return count; | |
698 | } | |
699 | ||
2eafd729 | 700 | static ssize_t emulate_tpws_store(struct config_item *item, |
3effdb90 CH |
701 | const char *page, size_t count) |
702 | { | |
2eafd729 | 703 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
704 | bool flag; |
705 | int ret; | |
706 | ||
707 | ret = strtobool(page, &flag); | |
708 | if (ret < 0) | |
709 | return ret; | |
710 | ||
711 | /* | |
712 | * We expect this value to be non-zero when generic Block Layer | |
713 | * Discard supported is detected iblock_create_virtdevice(). | |
714 | */ | |
715 | if (flag && !da->max_unmap_block_desc_count) { | |
716 | pr_err("Generic Block Discard not supported\n"); | |
717 | return -ENOSYS; | |
718 | } | |
719 | ||
720 | da->emulate_tpws = flag; | |
721 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", | |
722 | da->da_dev, flag); | |
723 | return count; | |
724 | } | |
725 | ||
2eafd729 | 726 | static ssize_t pi_prot_type_store(struct config_item *item, |
3effdb90 CH |
727 | const char *page, size_t count) |
728 | { | |
2eafd729 | 729 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
730 | int old_prot = da->pi_prot_type, ret; |
731 | struct se_device *dev = da->da_dev; | |
732 | u32 flag; | |
733 | ||
734 | ret = kstrtou32(page, 0, &flag); | |
735 | if (ret < 0) | |
736 | return ret; | |
737 | ||
738 | if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { | |
739 | pr_err("Illegal value %d for pi_prot_type\n", flag); | |
740 | return -EINVAL; | |
741 | } | |
742 | if (flag == 2) { | |
743 | pr_err("DIF TYPE2 protection currently not supported\n"); | |
744 | return -ENOSYS; | |
745 | } | |
746 | if (da->hw_pi_prot_type) { | |
747 | pr_warn("DIF protection enabled on underlying hardware," | |
748 | " ignoring\n"); | |
749 | return count; | |
750 | } | |
751 | if (!dev->transport->init_prot || !dev->transport->free_prot) { | |
752 | /* 0 is only allowed value for non-supporting backends */ | |
753 | if (flag == 0) | |
bc1a7d6a | 754 | return count; |
3effdb90 CH |
755 | |
756 | pr_err("DIF protection not supported by backend: %s\n", | |
757 | dev->transport->name); | |
758 | return -ENOSYS; | |
759 | } | |
760 | if (!(dev->dev_flags & DF_CONFIGURED)) { | |
761 | pr_err("DIF protection requires device to be configured\n"); | |
762 | return -ENODEV; | |
763 | } | |
764 | if (dev->export_count) { | |
765 | pr_err("dev[%p]: Unable to change SE Device PROT type while" | |
766 | " export_count is %d\n", dev, dev->export_count); | |
767 | return -EINVAL; | |
768 | } | |
769 | ||
770 | da->pi_prot_type = flag; | |
771 | ||
772 | if (flag && !old_prot) { | |
773 | ret = dev->transport->init_prot(dev); | |
774 | if (ret) { | |
775 | da->pi_prot_type = old_prot; | |
776 | return ret; | |
777 | } | |
778 | ||
779 | } else if (!flag && old_prot) { | |
780 | dev->transport->free_prot(dev); | |
781 | } | |
782 | ||
783 | pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); | |
784 | return count; | |
785 | } | |
786 | ||
2eafd729 | 787 | static ssize_t pi_prot_format_store(struct config_item *item, |
3effdb90 CH |
788 | const char *page, size_t count) |
789 | { | |
2eafd729 | 790 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
791 | struct se_device *dev = da->da_dev; |
792 | bool flag; | |
793 | int ret; | |
794 | ||
795 | ret = strtobool(page, &flag); | |
796 | if (ret < 0) | |
797 | return ret; | |
798 | ||
799 | if (!flag) | |
800 | return count; | |
801 | ||
802 | if (!dev->transport->format_prot) { | |
803 | pr_err("DIF protection format not supported by backend %s\n", | |
804 | dev->transport->name); | |
805 | return -ENOSYS; | |
806 | } | |
807 | if (!(dev->dev_flags & DF_CONFIGURED)) { | |
808 | pr_err("DIF protection format requires device to be configured\n"); | |
809 | return -ENODEV; | |
810 | } | |
811 | if (dev->export_count) { | |
812 | pr_err("dev[%p]: Unable to format SE Device PROT type while" | |
813 | " export_count is %d\n", dev, dev->export_count); | |
814 | return -EINVAL; | |
815 | } | |
816 | ||
817 | ret = dev->transport->format_prot(dev); | |
818 | if (ret) | |
819 | return ret; | |
820 | ||
821 | pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); | |
822 | return count; | |
823 | } | |
824 | ||
2eafd729 | 825 | static ssize_t force_pr_aptpl_store(struct config_item *item, |
3effdb90 CH |
826 | const char *page, size_t count) |
827 | { | |
2eafd729 | 828 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
829 | bool flag; |
830 | int ret; | |
831 | ||
832 | ret = strtobool(page, &flag); | |
833 | if (ret < 0) | |
834 | return ret; | |
835 | if (da->da_dev->export_count) { | |
836 | pr_err("dev[%p]: Unable to set force_pr_aptpl while" | |
837 | " export_count is %d\n", | |
838 | da->da_dev, da->da_dev->export_count); | |
839 | return -EINVAL; | |
840 | } | |
841 | ||
842 | da->force_pr_aptpl = flag; | |
843 | pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); | |
844 | return count; | |
845 | } | |
846 | ||
2eafd729 | 847 | static ssize_t emulate_rest_reord_store(struct config_item *item, |
3effdb90 CH |
848 | const char *page, size_t count) |
849 | { | |
2eafd729 | 850 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
851 | bool flag; |
852 | int ret; | |
853 | ||
854 | ret = strtobool(page, &flag); | |
855 | if (ret < 0) | |
856 | return ret; | |
857 | ||
858 | if (flag != 0) { | |
859 | printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" | |
860 | " reordering not implemented\n", da->da_dev); | |
861 | return -ENOSYS; | |
862 | } | |
863 | da->emulate_rest_reord = flag; | |
864 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", | |
865 | da->da_dev, flag); | |
866 | return count; | |
867 | } | |
868 | ||
869 | /* | |
870 | * Note, this can only be called on unexported SE Device Object. | |
871 | */ | |
2eafd729 | 872 | static ssize_t queue_depth_store(struct config_item *item, |
3effdb90 CH |
873 | const char *page, size_t count) |
874 | { | |
2eafd729 | 875 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
876 | struct se_device *dev = da->da_dev; |
877 | u32 val; | |
878 | int ret; | |
879 | ||
880 | ret = kstrtou32(page, 0, &val); | |
881 | if (ret < 0) | |
882 | return ret; | |
883 | ||
884 | if (dev->export_count) { | |
885 | pr_err("dev[%p]: Unable to change SE Device TCQ while" | |
886 | " export_count is %d\n", | |
887 | dev, dev->export_count); | |
888 | return -EINVAL; | |
889 | } | |
890 | if (!val) { | |
891 | pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); | |
892 | return -EINVAL; | |
893 | } | |
894 | ||
895 | if (val > dev->dev_attrib.queue_depth) { | |
896 | if (val > dev->dev_attrib.hw_queue_depth) { | |
897 | pr_err("dev[%p]: Passed queue_depth:" | |
898 | " %u exceeds TCM/SE_Device MAX" | |
899 | " TCQ: %u\n", dev, val, | |
900 | dev->dev_attrib.hw_queue_depth); | |
901 | return -EINVAL; | |
902 | } | |
903 | } | |
904 | da->queue_depth = dev->queue_depth = val; | |
905 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); | |
906 | return count; | |
907 | } | |
908 | ||
2eafd729 | 909 | static ssize_t optimal_sectors_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 | u32 val; |
914 | int ret; | |
915 | ||
916 | ret = kstrtou32(page, 0, &val); | |
917 | if (ret < 0) | |
918 | return ret; | |
919 | ||
920 | if (da->da_dev->export_count) { | |
921 | pr_err("dev[%p]: Unable to change SE Device" | |
922 | " optimal_sectors while export_count is %d\n", | |
923 | da->da_dev, da->da_dev->export_count); | |
924 | return -EINVAL; | |
925 | } | |
926 | if (val > da->hw_max_sectors) { | |
927 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" | |
928 | " greater than hw_max_sectors: %u\n", | |
929 | da->da_dev, val, da->hw_max_sectors); | |
930 | return -EINVAL; | |
931 | } | |
932 | ||
933 | da->optimal_sectors = val; | |
934 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", | |
935 | da->da_dev, val); | |
936 | return count; | |
5873c4d1 CH |
937 | } |
938 | ||
2eafd729 | 939 | static ssize_t block_size_store(struct config_item *item, |
3effdb90 CH |
940 | const char *page, size_t count) |
941 | { | |
2eafd729 | 942 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
943 | u32 val; |
944 | int ret; | |
945 | ||
946 | ret = kstrtou32(page, 0, &val); | |
947 | if (ret < 0) | |
948 | return ret; | |
5873c4d1 | 949 | |
3effdb90 CH |
950 | if (da->da_dev->export_count) { |
951 | pr_err("dev[%p]: Unable to change SE Device block_size" | |
952 | " while export_count is %d\n", | |
953 | da->da_dev, da->da_dev->export_count); | |
954 | return -EINVAL; | |
955 | } | |
956 | ||
957 | if (val != 512 && val != 1024 && val != 2048 && val != 4096) { | |
958 | pr_err("dev[%p]: Illegal value for block_device: %u" | |
959 | " for SE device, must be 512, 1024, 2048 or 4096\n", | |
960 | da->da_dev, val); | |
961 | return -EINVAL; | |
962 | } | |
963 | ||
964 | da->block_size = val; | |
965 | if (da->max_bytes_per_io) | |
966 | da->hw_max_sectors = da->max_bytes_per_io / val; | |
967 | ||
968 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", | |
969 | da->da_dev, val); | |
970 | return count; | |
971 | } | |
5873c4d1 | 972 | |
2eafd729 CH |
973 | CONFIGFS_ATTR(, emulate_model_alias); |
974 | CONFIGFS_ATTR(, emulate_dpo); | |
975 | CONFIGFS_ATTR(, emulate_fua_write); | |
976 | CONFIGFS_ATTR(, emulate_fua_read); | |
977 | CONFIGFS_ATTR(, emulate_write_cache); | |
978 | CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); | |
979 | CONFIGFS_ATTR(, emulate_tas); | |
980 | CONFIGFS_ATTR(, emulate_tpu); | |
981 | CONFIGFS_ATTR(, emulate_tpws); | |
982 | CONFIGFS_ATTR(, emulate_caw); | |
983 | CONFIGFS_ATTR(, emulate_3pc); | |
984 | CONFIGFS_ATTR(, pi_prot_type); | |
985 | CONFIGFS_ATTR_RO(, hw_pi_prot_type); | |
986 | CONFIGFS_ATTR(, pi_prot_format); | |
987 | CONFIGFS_ATTR(, enforce_pr_isids); | |
988 | CONFIGFS_ATTR(, is_nonrot); | |
989 | CONFIGFS_ATTR(, emulate_rest_reord); | |
990 | CONFIGFS_ATTR(, force_pr_aptpl); | |
991 | CONFIGFS_ATTR_RO(, hw_block_size); | |
992 | CONFIGFS_ATTR(, block_size); | |
993 | CONFIGFS_ATTR_RO(, hw_max_sectors); | |
994 | CONFIGFS_ATTR(, optimal_sectors); | |
995 | CONFIGFS_ATTR_RO(, hw_queue_depth); | |
996 | CONFIGFS_ATTR(, queue_depth); | |
997 | CONFIGFS_ATTR(, max_unmap_lba_count); | |
998 | CONFIGFS_ATTR(, max_unmap_block_desc_count); | |
999 | CONFIGFS_ATTR(, unmap_granularity); | |
1000 | CONFIGFS_ATTR(, unmap_granularity_alignment); | |
1001 | CONFIGFS_ATTR(, max_write_same_len); | |
c66ac9db | 1002 | |
5873c4d1 CH |
1003 | /* |
1004 | * dev_attrib attributes for devices using the target core SBC/SPC | |
1005 | * interpreter. Any backend using spc_parse_cdb should be using | |
1006 | * these. | |
1007 | */ | |
1008 | struct configfs_attribute *sbc_attrib_attrs[] = { | |
2eafd729 CH |
1009 | &attr_emulate_model_alias, |
1010 | &attr_emulate_dpo, | |
1011 | &attr_emulate_fua_write, | |
1012 | &attr_emulate_fua_read, | |
1013 | &attr_emulate_write_cache, | |
1014 | &attr_emulate_ua_intlck_ctrl, | |
1015 | &attr_emulate_tas, | |
1016 | &attr_emulate_tpu, | |
1017 | &attr_emulate_tpws, | |
1018 | &attr_emulate_caw, | |
1019 | &attr_emulate_3pc, | |
1020 | &attr_pi_prot_type, | |
1021 | &attr_hw_pi_prot_type, | |
1022 | &attr_pi_prot_format, | |
1023 | &attr_enforce_pr_isids, | |
1024 | &attr_is_nonrot, | |
1025 | &attr_emulate_rest_reord, | |
1026 | &attr_force_pr_aptpl, | |
1027 | &attr_hw_block_size, | |
1028 | &attr_block_size, | |
1029 | &attr_hw_max_sectors, | |
1030 | &attr_optimal_sectors, | |
1031 | &attr_hw_queue_depth, | |
1032 | &attr_queue_depth, | |
1033 | &attr_max_unmap_lba_count, | |
1034 | &attr_max_unmap_block_desc_count, | |
1035 | &attr_unmap_granularity, | |
1036 | &attr_unmap_granularity_alignment, | |
1037 | &attr_max_write_same_len, | |
5873c4d1 CH |
1038 | NULL, |
1039 | }; | |
1040 | EXPORT_SYMBOL(sbc_attrib_attrs); | |
1041 | ||
5873c4d1 CH |
1042 | /* |
1043 | * Minimal dev_attrib attributes for devices passing through CDBs. | |
1044 | * In this case we only provide a few read-only attributes for | |
1045 | * backwards compatibility. | |
1046 | */ | |
1047 | struct configfs_attribute *passthrough_attrib_attrs[] = { | |
2eafd729 CH |
1048 | &attr_hw_pi_prot_type, |
1049 | &attr_hw_block_size, | |
1050 | &attr_hw_max_sectors, | |
1051 | &attr_hw_queue_depth, | |
5873c4d1 CH |
1052 | NULL, |
1053 | }; | |
1054 | EXPORT_SYMBOL(passthrough_attrib_attrs); | |
1055 | ||
2eafd729 | 1056 | TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); |
c66ac9db | 1057 | |
f79a897e | 1058 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 1059 | |
f8d389c6 | 1060 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1061 | |
2eafd729 CH |
1062 | static struct t10_wwn *to_t10_wwn(struct config_item *item) |
1063 | { | |
1064 | return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); | |
1065 | } | |
c66ac9db NB |
1066 | |
1067 | /* | |
1068 | * VPD page 0x80 Unit serial | |
1069 | */ | |
2eafd729 CH |
1070 | static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, |
1071 | char *page) | |
c66ac9db | 1072 | { |
c66ac9db | 1073 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
2eafd729 | 1074 | &to_t10_wwn(item)->unit_serial[0]); |
c66ac9db NB |
1075 | } |
1076 | ||
2eafd729 CH |
1077 | static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, |
1078 | const char *page, size_t count) | |
c66ac9db | 1079 | { |
2eafd729 | 1080 | struct t10_wwn *t10_wwn = to_t10_wwn(item); |
0fd97ccf | 1081 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
1082 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
1083 | ||
1084 | /* | |
1085 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
1086 | * from the struct scsi_device level firmware, do not allow | |
1087 | * VPD Unit Serial to be emulated. | |
1088 | * | |
1089 | * Note this struct scsi_device could also be emulating VPD | |
1090 | * information from its drivers/scsi LLD. But for now we assume | |
1091 | * it is doing 'the right thing' wrt a world wide unique | |
1092 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
1093 | */ | |
0fd97ccf | 1094 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 1095 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
1096 | " Unit Serial, ignoring request\n"); |
1097 | return -EOPNOTSUPP; | |
1098 | } | |
1099 | ||
60d645a4 | 1100 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 1101 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
1102 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
1103 | return -EOVERFLOW; | |
1104 | } | |
1105 | /* | |
1106 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
1107 | * do exist, fail here as changing this information on the fly | |
1108 | * (underneath the initiator side OS dependent multipath code) | |
1109 | * could cause negative effects. | |
1110 | */ | |
0fd97ccf CH |
1111 | if (dev->export_count) { |
1112 | pr_err("Unable to set VPD Unit Serial while" | |
1113 | " active %d $FABRIC_MOD exports exist\n", | |
1114 | dev->export_count); | |
1115 | return -EINVAL; | |
c66ac9db | 1116 | } |
0fd97ccf | 1117 | |
c66ac9db NB |
1118 | /* |
1119 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
1120 | * | |
1121 | * Also, strip any newline added from the userspace | |
1122 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
1123 | */ | |
1124 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
1125 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 1126 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 1127 | "%s", strstrip(buf)); |
0fd97ccf | 1128 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 1129 | |
6708bb27 | 1130 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 1131 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
1132 | |
1133 | return count; | |
1134 | } | |
1135 | ||
c66ac9db NB |
1136 | /* |
1137 | * VPD page 0x83 Protocol Identifier | |
1138 | */ | |
2eafd729 CH |
1139 | static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, |
1140 | char *page) | |
c66ac9db | 1141 | { |
2eafd729 | 1142 | struct t10_wwn *t10_wwn = to_t10_wwn(item); |
c66ac9db NB |
1143 | struct t10_vpd *vpd; |
1144 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
1145 | ssize_t len = 0; | |
1146 | ||
c66ac9db NB |
1147 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
1148 | ||
1149 | spin_lock(&t10_wwn->t10_vpd_lock); | |
1150 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 1151 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
1152 | continue; |
1153 | ||
1154 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
1155 | ||
6708bb27 | 1156 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1157 | break; |
1158 | ||
1159 | len += sprintf(page+len, "%s", buf); | |
1160 | } | |
1161 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
1162 | ||
1163 | return len; | |
1164 | } | |
1165 | ||
c66ac9db NB |
1166 | /* |
1167 | * Generic wrapper for dumping VPD identifiers by association. | |
1168 | */ | |
1169 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
2eafd729 CH |
1170 | static ssize_t target_wwn_##_name##_show(struct config_item *item, \ |
1171 | char *page) \ | |
c66ac9db | 1172 | { \ |
2eafd729 CH |
1173 | struct t10_wwn *t10_wwn = to_t10_wwn(item); \ |
1174 | struct t10_vpd *vpd; \ | |
c66ac9db NB |
1175 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ |
1176 | ssize_t len = 0; \ | |
1177 | \ | |
c66ac9db NB |
1178 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
1179 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
1180 | if (vpd->association != _assoc) \ | |
1181 | continue; \ | |
1182 | \ | |
1183 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1184 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1185 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1186 | break; \ |
1187 | len += sprintf(page+len, "%s", buf); \ | |
1188 | \ | |
1189 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1190 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1191 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1192 | break; \ |
1193 | len += sprintf(page+len, "%s", buf); \ | |
1194 | \ | |
1195 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1196 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1197 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1198 | break; \ |
1199 | len += sprintf(page+len, "%s", buf); \ | |
1200 | } \ | |
1201 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
1202 | \ | |
1203 | return len; \ | |
1204 | } | |
1205 | ||
2eafd729 | 1206 | /* VPD page 0x83 Association: Logical Unit */ |
c66ac9db | 1207 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); |
2eafd729 | 1208 | /* VPD page 0x83 Association: Target Port */ |
c66ac9db | 1209 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); |
2eafd729 | 1210 | /* VPD page 0x83 Association: SCSI Target Device */ |
c66ac9db NB |
1211 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); |
1212 | ||
2eafd729 CH |
1213 | CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); |
1214 | CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); | |
1215 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); | |
1216 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); | |
1217 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); | |
c66ac9db NB |
1218 | |
1219 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
2eafd729 CH |
1220 | &target_wwn_attr_vpd_unit_serial, |
1221 | &target_wwn_attr_vpd_protocol_identifier, | |
1222 | &target_wwn_attr_vpd_assoc_logical_unit, | |
1223 | &target_wwn_attr_vpd_assoc_target_port, | |
1224 | &target_wwn_attr_vpd_assoc_scsi_target_device, | |
c66ac9db NB |
1225 | NULL, |
1226 | }; | |
1227 | ||
2eafd729 | 1228 | TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 1229 | |
f8d389c6 | 1230 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1231 | |
91e2e39b | 1232 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1233 | |
2eafd729 CH |
1234 | static struct se_device *pr_to_dev(struct config_item *item) |
1235 | { | |
1236 | return container_of(to_config_group(item), struct se_device, | |
1237 | dev_pr_group); | |
1238 | } | |
c66ac9db | 1239 | |
d977f437 CH |
1240 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
1241 | char *page) | |
c66ac9db NB |
1242 | { |
1243 | struct se_node_acl *se_nacl; | |
1244 | struct t10_pr_registration *pr_reg; | |
1245 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
1246 | |
1247 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1248 | ||
c66ac9db | 1249 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
1250 | if (!pr_reg) |
1251 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
1252 | ||
c66ac9db | 1253 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 1254 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 1255 | |
d977f437 | 1256 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 1257 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 1258 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
1259 | } |
1260 | ||
d977f437 CH |
1261 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
1262 | char *page) | |
c66ac9db NB |
1263 | { |
1264 | struct se_node_acl *se_nacl; | |
d977f437 | 1265 | ssize_t len; |
c66ac9db | 1266 | |
c66ac9db | 1267 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
1268 | if (se_nacl) { |
1269 | len = sprintf(page, | |
1270 | "SPC-2 Reservation: %s Initiator: %s\n", | |
1271 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
1272 | se_nacl->initiatorname); | |
1273 | } else { | |
1274 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1275 | } |
d977f437 | 1276 | return len; |
c66ac9db NB |
1277 | } |
1278 | ||
2eafd729 | 1279 | static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) |
c66ac9db | 1280 | { |
2eafd729 | 1281 | struct se_device *dev = pr_to_dev(item); |
d977f437 | 1282 | int ret; |
c66ac9db | 1283 | |
a3541703 | 1284 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 | 1285 | return sprintf(page, "Passthrough\n"); |
c66ac9db | 1286 | |
d977f437 CH |
1287 | spin_lock(&dev->dev_reservation_lock); |
1288 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1289 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1290 | else | |
1291 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1292 | spin_unlock(&dev->dev_reservation_lock); | |
1293 | return ret; | |
c66ac9db NB |
1294 | } |
1295 | ||
2eafd729 CH |
1296 | static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, |
1297 | char *page) | |
c66ac9db | 1298 | { |
2eafd729 | 1299 | struct se_device *dev = pr_to_dev(item); |
c66ac9db NB |
1300 | ssize_t len = 0; |
1301 | ||
c66ac9db | 1302 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1303 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1304 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1305 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1306 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1307 | " Ports registration\n"); | |
d977f437 | 1308 | } else { |
c66ac9db NB |
1309 | len = sprintf(page, "SPC-3 Reservation: Single" |
1310 | " Target Port registration\n"); | |
d977f437 | 1311 | } |
c66ac9db | 1312 | |
d977f437 | 1313 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1314 | return len; |
1315 | } | |
1316 | ||
2eafd729 CH |
1317 | static ssize_t target_pr_res_pr_generation_show(struct config_item *item, |
1318 | char *page) | |
c66ac9db | 1319 | { |
2eafd729 | 1320 | return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); |
c66ac9db NB |
1321 | } |
1322 | ||
c66ac9db | 1323 | |
2eafd729 CH |
1324 | static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, |
1325 | char *page) | |
c66ac9db | 1326 | { |
2eafd729 | 1327 | struct se_device *dev = pr_to_dev(item); |
c66ac9db | 1328 | struct se_node_acl *se_nacl; |
c66ac9db NB |
1329 | struct se_portal_group *se_tpg; |
1330 | struct t10_pr_registration *pr_reg; | |
9ac8928e | 1331 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1332 | ssize_t len = 0; |
1333 | ||
c66ac9db NB |
1334 | spin_lock(&dev->dev_reservation_lock); |
1335 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1336 | if (!pr_reg) { |
c66ac9db | 1337 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1338 | goto out_unlock; |
c66ac9db | 1339 | } |
d977f437 | 1340 | |
c66ac9db NB |
1341 | se_nacl = pr_reg->pr_reg_nacl; |
1342 | se_tpg = se_nacl->se_tpg; | |
e3d6f909 | 1343 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1344 | |
1345 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1346 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1347 | tfo->tpg_get_wwn(se_tpg)); | |
1348 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1349 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
f2d30680 | 1350 | " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, |
c66ac9db | 1351 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), |
79dc9c9e | 1352 | tfo->get_fabric_name(), pr_reg->pr_aptpl_target_lun); |
c66ac9db | 1353 | |
d977f437 CH |
1354 | out_unlock: |
1355 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1356 | return len; |
1357 | } | |
1358 | ||
c66ac9db | 1359 | |
2eafd729 CH |
1360 | static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, |
1361 | char *page) | |
c66ac9db | 1362 | { |
2eafd729 | 1363 | struct se_device *dev = pr_to_dev(item); |
9ac8928e | 1364 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1365 | struct t10_pr_registration *pr_reg; |
1366 | unsigned char buf[384]; | |
1367 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1368 | ssize_t len = 0; | |
d2843c17 | 1369 | int reg_count = 0; |
c66ac9db | 1370 | |
c66ac9db NB |
1371 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1372 | ||
0fd97ccf CH |
1373 | spin_lock(&dev->t10_pr.registration_lock); |
1374 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1375 | pr_reg_list) { |
1376 | ||
1377 | memset(buf, 0, 384); | |
1378 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1379 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 1380 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
1381 | PR_REG_ISID_ID_LEN); |
1382 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1383 | tfo->get_fabric_name(), | |
d2843c17 | 1384 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1385 | pr_reg->pr_res_generation); |
1386 | ||
6708bb27 | 1387 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1388 | break; |
1389 | ||
1390 | len += sprintf(page+len, "%s", buf); | |
1391 | reg_count++; | |
1392 | } | |
0fd97ccf | 1393 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1394 | |
6708bb27 | 1395 | if (!reg_count) |
c66ac9db NB |
1396 | len += sprintf(page+len, "None\n"); |
1397 | ||
1398 | return len; | |
1399 | } | |
1400 | ||
2eafd729 | 1401 | static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) |
c66ac9db | 1402 | { |
2eafd729 | 1403 | struct se_device *dev = pr_to_dev(item); |
c66ac9db NB |
1404 | struct t10_pr_registration *pr_reg; |
1405 | ssize_t len = 0; | |
1406 | ||
c66ac9db NB |
1407 | spin_lock(&dev->dev_reservation_lock); |
1408 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1409 | if (pr_reg) { |
1410 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1411 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1412 | } else { | |
c66ac9db | 1413 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1414 | } |
c66ac9db | 1415 | |
d977f437 | 1416 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1417 | return len; |
1418 | } | |
1419 | ||
2eafd729 | 1420 | static ssize_t target_pr_res_type_show(struct config_item *item, char *page) |
c66ac9db | 1421 | { |
2eafd729 CH |
1422 | struct se_device *dev = pr_to_dev(item); |
1423 | ||
a3541703 | 1424 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 CH |
1425 | return sprintf(page, "SPC_PASSTHROUGH\n"); |
1426 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1427 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1428 | else | |
1429 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1430 | } |
1431 | ||
2eafd729 CH |
1432 | static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, |
1433 | char *page) | |
c66ac9db | 1434 | { |
2eafd729 CH |
1435 | struct se_device *dev = pr_to_dev(item); |
1436 | ||
a3541703 | 1437 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
c66ac9db NB |
1438 | return 0; |
1439 | ||
1440 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1441 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1442 | } |
1443 | ||
2eafd729 CH |
1444 | static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, |
1445 | char *page) | |
c66ac9db | 1446 | { |
2eafd729 CH |
1447 | struct se_device *dev = pr_to_dev(item); |
1448 | ||
a3541703 | 1449 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
c66ac9db NB |
1450 | return 0; |
1451 | ||
1452 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1453 | } | |
1454 | ||
1455 | enum { | |
1456 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1457 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1458 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1459 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1460 | }; | |
1461 | ||
1462 | static match_table_t tokens = { | |
1463 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1464 | {Opt_initiator_node, "initiator_node=%s"}, | |
1465 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1466 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1467 | {Opt_res_holder, "res_holder=%d"}, | |
1468 | {Opt_res_type, "res_type=%d"}, | |
1469 | {Opt_res_scope, "res_scope=%d"}, | |
1470 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
f2d30680 | 1471 | {Opt_mapped_lun, "mapped_lun=%lld"}, |
c66ac9db NB |
1472 | {Opt_target_fabric, "target_fabric=%s"}, |
1473 | {Opt_target_node, "target_node=%s"}, | |
1474 | {Opt_tpgt, "tpgt=%d"}, | |
1475 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
f2d30680 | 1476 | {Opt_target_lun, "target_lun=%lld"}, |
c66ac9db NB |
1477 | {Opt_err, NULL} |
1478 | }; | |
1479 | ||
2eafd729 CH |
1480 | static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, |
1481 | const char *page, size_t count) | |
c66ac9db | 1482 | { |
2eafd729 | 1483 | struct se_device *dev = pr_to_dev(item); |
6d180253 JJ |
1484 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1485 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 1486 | char *orig, *ptr, *opts; |
c66ac9db NB |
1487 | substring_t args[MAX_OPT_ARGS]; |
1488 | unsigned long long tmp_ll; | |
1489 | u64 sa_res_key = 0; | |
f2d30680 | 1490 | u64 mapped_lun = 0, target_lun = 0; |
c66ac9db | 1491 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; |
45fb94c2 BVA |
1492 | u16 tpgt = 0; |
1493 | u8 type = 0; | |
c66ac9db | 1494 | |
a3541703 | 1495 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
9105bfc0 | 1496 | return count; |
d977f437 | 1497 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
9105bfc0 | 1498 | return count; |
c66ac9db | 1499 | |
0fd97ccf | 1500 | if (dev->export_count) { |
6708bb27 | 1501 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1502 | " active fabric exports exist\n"); |
1503 | return -EINVAL; | |
1504 | } | |
1505 | ||
1506 | opts = kstrdup(page, GFP_KERNEL); | |
1507 | if (!opts) | |
1508 | return -ENOMEM; | |
1509 | ||
1510 | orig = opts; | |
90c161b6 | 1511 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1512 | if (!*ptr) |
1513 | continue; | |
1514 | ||
1515 | token = match_token(ptr, tokens, args); | |
1516 | switch (token) { | |
1517 | case Opt_initiator_fabric: | |
8d213559 | 1518 | i_fabric = match_strdup(args); |
6d180253 JJ |
1519 | if (!i_fabric) { |
1520 | ret = -ENOMEM; | |
1521 | goto out; | |
1522 | } | |
c66ac9db NB |
1523 | break; |
1524 | case Opt_initiator_node: | |
8d213559 | 1525 | i_port = match_strdup(args); |
6d180253 JJ |
1526 | if (!i_port) { |
1527 | ret = -ENOMEM; | |
1528 | goto out; | |
1529 | } | |
60d645a4 | 1530 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1531 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1532 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1533 | PR_APTPL_MAX_IPORT_LEN); | |
1534 | ret = -EINVAL; | |
1535 | break; | |
1536 | } | |
1537 | break; | |
1538 | case Opt_initiator_sid: | |
8d213559 | 1539 | isid = match_strdup(args); |
6d180253 JJ |
1540 | if (!isid) { |
1541 | ret = -ENOMEM; | |
1542 | goto out; | |
1543 | } | |
60d645a4 | 1544 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1545 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1546 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1547 | PR_REG_ISID_LEN); | |
1548 | ret = -EINVAL; | |
1549 | break; | |
1550 | } | |
1551 | break; | |
1552 | case Opt_sa_res_key: | |
8d213559 | 1553 | ret = kstrtoull(args->from, 0, &tmp_ll); |
c66ac9db | 1554 | if (ret < 0) { |
8d213559 | 1555 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1556 | goto out; |
1557 | } | |
1558 | sa_res_key = (u64)tmp_ll; | |
1559 | break; | |
1560 | /* | |
1561 | * PR APTPL Metadata for Reservation | |
1562 | */ | |
1563 | case Opt_res_holder: | |
c2091026 DD |
1564 | ret = match_int(args, &arg); |
1565 | if (ret) | |
1566 | goto out; | |
c66ac9db NB |
1567 | res_holder = arg; |
1568 | break; | |
1569 | case Opt_res_type: | |
c2091026 DD |
1570 | ret = match_int(args, &arg); |
1571 | if (ret) | |
1572 | goto out; | |
c66ac9db NB |
1573 | type = (u8)arg; |
1574 | break; | |
1575 | case Opt_res_scope: | |
c2091026 DD |
1576 | ret = match_int(args, &arg); |
1577 | if (ret) | |
1578 | goto out; | |
c66ac9db NB |
1579 | break; |
1580 | case Opt_res_all_tg_pt: | |
c2091026 DD |
1581 | ret = match_int(args, &arg); |
1582 | if (ret) | |
1583 | goto out; | |
c66ac9db NB |
1584 | all_tg_pt = (int)arg; |
1585 | break; | |
1586 | case Opt_mapped_lun: | |
c2091026 DD |
1587 | ret = match_int(args, &arg); |
1588 | if (ret) | |
1589 | goto out; | |
f2d30680 | 1590 | mapped_lun = (u64)arg; |
c66ac9db NB |
1591 | break; |
1592 | /* | |
1593 | * PR APTPL Metadata for Target Port | |
1594 | */ | |
1595 | case Opt_target_fabric: | |
8d213559 | 1596 | t_fabric = match_strdup(args); |
6d180253 JJ |
1597 | if (!t_fabric) { |
1598 | ret = -ENOMEM; | |
1599 | goto out; | |
1600 | } | |
c66ac9db NB |
1601 | break; |
1602 | case Opt_target_node: | |
8d213559 | 1603 | t_port = match_strdup(args); |
6d180253 JJ |
1604 | if (!t_port) { |
1605 | ret = -ENOMEM; | |
1606 | goto out; | |
1607 | } | |
60d645a4 | 1608 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1609 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1610 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1611 | PR_APTPL_MAX_TPORT_LEN); | |
1612 | ret = -EINVAL; | |
1613 | break; | |
1614 | } | |
1615 | break; | |
1616 | case Opt_tpgt: | |
c2091026 DD |
1617 | ret = match_int(args, &arg); |
1618 | if (ret) | |
1619 | goto out; | |
c66ac9db NB |
1620 | tpgt = (u16)arg; |
1621 | break; | |
1622 | case Opt_port_rtpi: | |
c2091026 DD |
1623 | ret = match_int(args, &arg); |
1624 | if (ret) | |
1625 | goto out; | |
c66ac9db NB |
1626 | break; |
1627 | case Opt_target_lun: | |
c2091026 DD |
1628 | ret = match_int(args, &arg); |
1629 | if (ret) | |
1630 | goto out; | |
f2d30680 | 1631 | target_lun = (u64)arg; |
c66ac9db NB |
1632 | break; |
1633 | default: | |
1634 | break; | |
1635 | } | |
1636 | } | |
1637 | ||
6708bb27 AG |
1638 | if (!i_port || !t_port || !sa_res_key) { |
1639 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1640 | ret = -EINVAL; |
1641 | goto out; | |
1642 | } | |
1643 | ||
1644 | if (res_holder && !(type)) { | |
6708bb27 | 1645 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1646 | " holder\n", type); |
1647 | ret = -EINVAL; | |
1648 | goto out; | |
1649 | } | |
1650 | ||
0fd97ccf | 1651 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1652 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1653 | res_holder, all_tg_pt, type); | |
1654 | out: | |
6d180253 JJ |
1655 | kfree(i_fabric); |
1656 | kfree(i_port); | |
1657 | kfree(isid); | |
1658 | kfree(t_fabric); | |
1659 | kfree(t_port); | |
c66ac9db NB |
1660 | kfree(orig); |
1661 | return (ret == 0) ? count : ret; | |
1662 | } | |
1663 | ||
c66ac9db | 1664 | |
2eafd729 CH |
1665 | CONFIGFS_ATTR_RO(target_pr_, res_holder); |
1666 | CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); | |
1667 | CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); | |
1668 | CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); | |
1669 | CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); | |
1670 | CONFIGFS_ATTR_RO(target_pr_, res_pr_type); | |
1671 | CONFIGFS_ATTR_RO(target_pr_, res_type); | |
1672 | CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); | |
1673 | CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); | |
c66ac9db NB |
1674 | |
1675 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
2eafd729 CH |
1676 | &target_pr_attr_res_holder, |
1677 | &target_pr_attr_res_pr_all_tgt_pts, | |
1678 | &target_pr_attr_res_pr_generation, | |
1679 | &target_pr_attr_res_pr_holder_tg_port, | |
1680 | &target_pr_attr_res_pr_registered_i_pts, | |
1681 | &target_pr_attr_res_pr_type, | |
1682 | &target_pr_attr_res_type, | |
1683 | &target_pr_attr_res_aptpl_active, | |
1684 | &target_pr_attr_res_aptpl_metadata, | |
c66ac9db NB |
1685 | NULL, |
1686 | }; | |
1687 | ||
2eafd729 | 1688 | TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); |
c66ac9db | 1689 | |
91e2e39b | 1690 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1691 | |
73112edc | 1692 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db | 1693 | |
2eafd729 CH |
1694 | static inline struct se_device *to_device(struct config_item *item) |
1695 | { | |
1696 | return container_of(to_config_group(item), struct se_device, dev_group); | |
1697 | } | |
1698 | ||
1699 | static ssize_t target_dev_info_show(struct config_item *item, char *page) | |
c66ac9db | 1700 | { |
2eafd729 | 1701 | struct se_device *dev = to_device(item); |
c66ac9db NB |
1702 | int bl = 0; |
1703 | ssize_t read_bytes = 0; | |
1704 | ||
0fd97ccf | 1705 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1706 | read_bytes += bl; |
0a06d430 CH |
1707 | read_bytes += dev->transport->show_configfs_dev_params(dev, |
1708 | page+read_bytes); | |
c66ac9db NB |
1709 | return read_bytes; |
1710 | } | |
1711 | ||
2eafd729 CH |
1712 | static ssize_t target_dev_control_store(struct config_item *item, |
1713 | const char *page, size_t count) | |
c66ac9db | 1714 | { |
2eafd729 | 1715 | struct se_device *dev = to_device(item); |
c66ac9db | 1716 | |
0a06d430 | 1717 | return dev->transport->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1718 | } |
1719 | ||
2eafd729 | 1720 | static ssize_t target_dev_alias_show(struct config_item *item, char *page) |
c66ac9db | 1721 | { |
2eafd729 | 1722 | struct se_device *dev = to_device(item); |
c66ac9db | 1723 | |
0fd97ccf | 1724 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1725 | return 0; |
1726 | ||
0fd97ccf | 1727 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1728 | } |
1729 | ||
2eafd729 CH |
1730 | static ssize_t target_dev_alias_store(struct config_item *item, |
1731 | const char *page, size_t count) | |
c66ac9db | 1732 | { |
2eafd729 | 1733 | struct se_device *dev = to_device(item); |
0fd97ccf | 1734 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
1735 | ssize_t read_bytes; |
1736 | ||
1737 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1738 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1739 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1740 | SE_DEV_ALIAS_LEN-1); | |
1741 | return -EINVAL; | |
1742 | } | |
1743 | ||
0fd97ccf | 1744 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1745 | if (!read_bytes) |
1746 | return -EINVAL; | |
0fd97ccf CH |
1747 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1748 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1749 | |
0fd97ccf | 1750 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1751 | |
6708bb27 | 1752 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1753 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1754 | config_item_name(&dev->dev_group.cg_item), |
1755 | dev->dev_alias); | |
c66ac9db NB |
1756 | |
1757 | return read_bytes; | |
1758 | } | |
1759 | ||
2eafd729 | 1760 | static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) |
c66ac9db | 1761 | { |
2eafd729 | 1762 | struct se_device *dev = to_device(item); |
c66ac9db | 1763 | |
0fd97ccf | 1764 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1765 | return 0; |
1766 | ||
0fd97ccf | 1767 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1768 | } |
1769 | ||
2eafd729 CH |
1770 | static ssize_t target_dev_udev_path_store(struct config_item *item, |
1771 | const char *page, size_t count) | |
c66ac9db | 1772 | { |
2eafd729 | 1773 | struct se_device *dev = to_device(item); |
0fd97ccf | 1774 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
1775 | ssize_t read_bytes; |
1776 | ||
1777 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1778 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1779 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1780 | SE_UDEV_PATH_LEN-1); | |
1781 | return -EINVAL; | |
1782 | } | |
1783 | ||
0fd97ccf | 1784 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1785 | "%s", page); |
3011684c DC |
1786 | if (!read_bytes) |
1787 | return -EINVAL; | |
0fd97ccf CH |
1788 | if (dev->udev_path[read_bytes - 1] == '\n') |
1789 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1790 | |
0fd97ccf | 1791 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1792 | |
6708bb27 | 1793 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1794 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1795 | config_item_name(&dev->dev_group.cg_item), |
1796 | dev->udev_path); | |
c66ac9db NB |
1797 | |
1798 | return read_bytes; | |
1799 | } | |
1800 | ||
2eafd729 | 1801 | static ssize_t target_dev_enable_show(struct config_item *item, char *page) |
64146db7 | 1802 | { |
2eafd729 | 1803 | struct se_device *dev = to_device(item); |
64146db7 AG |
1804 | |
1805 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); | |
1806 | } | |
1807 | ||
2eafd729 CH |
1808 | static ssize_t target_dev_enable_store(struct config_item *item, |
1809 | const char *page, size_t count) | |
c66ac9db | 1810 | { |
2eafd729 | 1811 | struct se_device *dev = to_device(item); |
c66ac9db | 1812 | char *ptr; |
0fd97ccf | 1813 | int ret; |
c66ac9db NB |
1814 | |
1815 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1816 | if (!ptr) { |
1817 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1818 | " is \"1\"\n"); |
1819 | return -EINVAL; | |
1820 | } | |
c66ac9db | 1821 | |
0fd97ccf CH |
1822 | ret = target_configure_device(dev); |
1823 | if (ret) | |
1824 | return ret; | |
c66ac9db NB |
1825 | return count; |
1826 | } | |
1827 | ||
2eafd729 | 1828 | static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) |
c66ac9db | 1829 | { |
2eafd729 | 1830 | struct se_device *dev = to_device(item); |
c66ac9db NB |
1831 | struct config_item *lu_ci; |
1832 | struct t10_alua_lu_gp *lu_gp; | |
1833 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1834 | ssize_t len = 0; | |
1835 | ||
c66ac9db | 1836 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1837 | if (!lu_gp_mem) |
1838 | return 0; | |
c66ac9db NB |
1839 | |
1840 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1841 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1842 | if (lu_gp) { |
c66ac9db NB |
1843 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1844 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1845 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1846 | } | |
1847 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1848 | ||
1849 | return len; | |
1850 | } | |
1851 | ||
2eafd729 CH |
1852 | static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, |
1853 | const char *page, size_t count) | |
c66ac9db | 1854 | { |
2eafd729 | 1855 | struct se_device *dev = to_device(item); |
0fd97ccf | 1856 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
1857 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
1858 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1859 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1860 | int move = 0; | |
1861 | ||
c87fbd56 CH |
1862 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
1863 | if (!lu_gp_mem) | |
9105bfc0 | 1864 | return count; |
c87fbd56 | 1865 | |
c66ac9db | 1866 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 1867 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1868 | return -EINVAL; |
1869 | } | |
1870 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1871 | memcpy(buf, page, count); | |
1872 | /* | |
1873 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1874 | * making a new group association. | |
1875 | */ | |
1876 | if (strcmp(strstrip(buf), "NULL")) { | |
1877 | /* | |
1878 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1879 | * struct t10_alua_lu_gp. This reference is released with | |
1880 | * core_alua_get_lu_gp_by_name below(). | |
1881 | */ | |
1882 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1883 | if (!lu_gp_new) |
c66ac9db NB |
1884 | return -ENODEV; |
1885 | } | |
c66ac9db NB |
1886 | |
1887 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1888 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1889 | if (lu_gp) { |
c66ac9db NB |
1890 | /* |
1891 | * Clearing an existing lu_gp association, and replacing | |
1892 | * with NULL | |
1893 | */ | |
6708bb27 AG |
1894 | if (!lu_gp_new) { |
1895 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1896 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1897 | " %hu\n", | |
1898 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1899 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1900 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
1901 | lu_gp->lu_gp_id); | |
1902 | ||
1903 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1904 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1905 | ||
1906 | return count; | |
1907 | } | |
1908 | /* | |
1909 | * Removing existing association of lu_gp_mem with lu_gp | |
1910 | */ | |
1911 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1912 | move = 1; | |
1913 | } | |
1914 | /* | |
1915 | * Associate lu_gp_mem with lu_gp_new. | |
1916 | */ | |
1917 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1918 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1919 | ||
6708bb27 | 1920 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1921 | " core/alua/lu_gps/%s, ID: %hu\n", |
1922 | (move) ? "Moving" : "Adding", | |
1923 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1924 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1925 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
1926 | lu_gp_new->lu_gp_id); | |
1927 | ||
1928 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1929 | return count; | |
1930 | } | |
1931 | ||
2eafd729 | 1932 | static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) |
229d4f11 | 1933 | { |
2eafd729 | 1934 | struct se_device *dev = to_device(item); |
229d4f11 HR |
1935 | struct t10_alua_lba_map *map; |
1936 | struct t10_alua_lba_map_member *mem; | |
1937 | char *b = page; | |
1938 | int bl = 0; | |
1939 | char state; | |
1940 | ||
1941 | spin_lock(&dev->t10_alua.lba_map_lock); | |
1942 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
1943 | bl += sprintf(b + bl, "%u %u\n", | |
1944 | dev->t10_alua.lba_map_segment_size, | |
1945 | dev->t10_alua.lba_map_segment_multiplier); | |
1946 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
1947 | bl += sprintf(b + bl, "%llu %llu", | |
1948 | map->lba_map_first_lba, map->lba_map_last_lba); | |
1949 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
1950 | lba_map_mem_list) { | |
1951 | switch (mem->lba_map_mem_alua_state) { | |
1952 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
1953 | state = 'O'; | |
1954 | break; | |
1955 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
1956 | state = 'A'; | |
1957 | break; | |
1958 | case ALUA_ACCESS_STATE_STANDBY: | |
1959 | state = 'S'; | |
1960 | break; | |
1961 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
1962 | state = 'U'; | |
1963 | break; | |
1964 | default: | |
1965 | state = '.'; | |
1966 | break; | |
1967 | } | |
1968 | bl += sprintf(b + bl, " %d:%c", | |
1969 | mem->lba_map_mem_alua_pg_id, state); | |
1970 | } | |
1971 | bl += sprintf(b + bl, "\n"); | |
1972 | } | |
1973 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
1974 | return bl; | |
1975 | } | |
1976 | ||
2eafd729 CH |
1977 | static ssize_t target_dev_lba_map_store(struct config_item *item, |
1978 | const char *page, size_t count) | |
229d4f11 | 1979 | { |
2eafd729 | 1980 | struct se_device *dev = to_device(item); |
229d4f11 HR |
1981 | struct t10_alua_lba_map *lba_map = NULL; |
1982 | struct list_head lba_list; | |
1983 | char *map_entries, *ptr; | |
1984 | char state; | |
1985 | int pg_num = -1, pg; | |
1986 | int ret = 0, num = 0, pg_id, alua_state; | |
1987 | unsigned long start_lba = -1, end_lba = -1; | |
1988 | unsigned long segment_size = -1, segment_mult = -1; | |
1989 | ||
1990 | map_entries = kstrdup(page, GFP_KERNEL); | |
1991 | if (!map_entries) | |
1992 | return -ENOMEM; | |
1993 | ||
1994 | INIT_LIST_HEAD(&lba_list); | |
1995 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
1996 | if (!*ptr) | |
1997 | continue; | |
1998 | ||
1999 | if (num == 0) { | |
2000 | if (sscanf(ptr, "%lu %lu\n", | |
2001 | &segment_size, &segment_mult) != 2) { | |
2002 | pr_err("Invalid line %d\n", num); | |
2003 | ret = -EINVAL; | |
2004 | break; | |
2005 | } | |
2006 | num++; | |
2007 | continue; | |
2008 | } | |
2009 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
2010 | pr_err("Invalid line %d\n", num); | |
2011 | ret = -EINVAL; | |
2012 | break; | |
2013 | } | |
2014 | ptr = strchr(ptr, ' '); | |
2015 | if (!ptr) { | |
2016 | pr_err("Invalid line %d, missing end lba\n", num); | |
2017 | ret = -EINVAL; | |
2018 | break; | |
2019 | } | |
2020 | ptr++; | |
2021 | ptr = strchr(ptr, ' '); | |
2022 | if (!ptr) { | |
2023 | pr_err("Invalid line %d, missing state definitions\n", | |
2024 | num); | |
2025 | ret = -EINVAL; | |
2026 | break; | |
2027 | } | |
2028 | ptr++; | |
2029 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
2030 | start_lba, end_lba); | |
2031 | if (IS_ERR(lba_map)) { | |
2032 | ret = PTR_ERR(lba_map); | |
2033 | break; | |
2034 | } | |
2035 | pg = 0; | |
2036 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
2037 | switch (state) { | |
2038 | case 'O': | |
2039 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
2040 | break; | |
2041 | case 'A': | |
2042 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
2043 | break; | |
2044 | case 'S': | |
2045 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
2046 | break; | |
2047 | case 'U': | |
2048 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
2049 | break; | |
2050 | default: | |
2051 | pr_err("Invalid ALUA state '%c'\n", state); | |
2052 | ret = -EINVAL; | |
2053 | goto out; | |
2054 | } | |
2055 | ||
2056 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
2057 | pg_id, alua_state); | |
2058 | if (ret) { | |
2059 | pr_err("Invalid target descriptor %d:%c " | |
2060 | "at line %d\n", | |
2061 | pg_id, state, num); | |
2062 | break; | |
2063 | } | |
2064 | pg++; | |
2065 | ptr = strchr(ptr, ' '); | |
2066 | if (ptr) | |
2067 | ptr++; | |
2068 | else | |
2069 | break; | |
2070 | } | |
2071 | if (pg_num == -1) | |
2072 | pg_num = pg; | |
2073 | else if (pg != pg_num) { | |
2074 | pr_err("Only %d from %d port groups definitions " | |
2075 | "at line %d\n", pg, pg_num, num); | |
2076 | ret = -EINVAL; | |
2077 | break; | |
2078 | } | |
2079 | num++; | |
2080 | } | |
2081 | out: | |
2082 | if (ret) { | |
2083 | core_alua_free_lba_map(&lba_list); | |
2084 | count = ret; | |
2085 | } else | |
2086 | core_alua_set_lba_map(dev, &lba_list, | |
2087 | segment_size, segment_mult); | |
2088 | kfree(map_entries); | |
2089 | return count; | |
2090 | } | |
2091 | ||
2eafd729 CH |
2092 | CONFIGFS_ATTR_RO(target_dev_, info); |
2093 | CONFIGFS_ATTR_WO(target_dev_, control); | |
2094 | CONFIGFS_ATTR(target_dev_, alias); | |
2095 | CONFIGFS_ATTR(target_dev_, udev_path); | |
2096 | CONFIGFS_ATTR(target_dev_, enable); | |
2097 | CONFIGFS_ATTR(target_dev_, alua_lu_gp); | |
2098 | CONFIGFS_ATTR(target_dev_, lba_map); | |
229d4f11 | 2099 | |
73112edc | 2100 | static struct configfs_attribute *target_core_dev_attrs[] = { |
2eafd729 CH |
2101 | &target_dev_attr_info, |
2102 | &target_dev_attr_control, | |
2103 | &target_dev_attr_alias, | |
2104 | &target_dev_attr_udev_path, | |
2105 | &target_dev_attr_enable, | |
2106 | &target_dev_attr_alua_lu_gp, | |
2107 | &target_dev_attr_lba_map, | |
c66ac9db NB |
2108 | NULL, |
2109 | }; | |
2110 | ||
2111 | static void target_core_dev_release(struct config_item *item) | |
2112 | { | |
0fd97ccf CH |
2113 | struct config_group *dev_cg = to_config_group(item); |
2114 | struct se_device *dev = | |
2115 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2116 | |
c66ac9db | 2117 | kfree(dev_cg->default_groups); |
0fd97ccf | 2118 | target_free_device(dev); |
c66ac9db NB |
2119 | } |
2120 | ||
c66ac9db NB |
2121 | static struct configfs_item_operations target_core_dev_item_ops = { |
2122 | .release = target_core_dev_release, | |
c66ac9db NB |
2123 | }; |
2124 | ||
73112edc | 2125 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 2126 | |
73112edc | 2127 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
2128 | |
2129 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2130 | ||
2eafd729 CH |
2131 | static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) |
2132 | { | |
2133 | return container_of(to_config_group(item), struct t10_alua_lu_gp, | |
2134 | lu_gp_group); | |
2135 | } | |
c66ac9db | 2136 | |
2eafd729 | 2137 | static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) |
c66ac9db | 2138 | { |
2eafd729 CH |
2139 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
2140 | ||
6708bb27 | 2141 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db | 2142 | return 0; |
c66ac9db NB |
2143 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); |
2144 | } | |
2145 | ||
2eafd729 CH |
2146 | static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, |
2147 | const char *page, size_t count) | |
c66ac9db | 2148 | { |
2eafd729 | 2149 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
c66ac9db NB |
2150 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; |
2151 | unsigned long lu_gp_id; | |
2152 | int ret; | |
2153 | ||
57103d7f | 2154 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 2155 | if (ret < 0) { |
57103d7f | 2156 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2157 | " lu_gp_id\n", ret); |
57103d7f | 2158 | return ret; |
c66ac9db NB |
2159 | } |
2160 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2161 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2162 | " 0x0000ffff\n", lu_gp_id); |
2163 | return -EINVAL; | |
2164 | } | |
2165 | ||
2166 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2167 | if (ret < 0) | |
2168 | return -EINVAL; | |
2169 | ||
6708bb27 | 2170 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2171 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2172 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2173 | lu_gp->lu_gp_id); | |
2174 | ||
2175 | return count; | |
2176 | } | |
2177 | ||
2eafd729 | 2178 | static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) |
c66ac9db | 2179 | { |
2eafd729 | 2180 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
c66ac9db NB |
2181 | struct se_device *dev; |
2182 | struct se_hba *hba; | |
c66ac9db NB |
2183 | struct t10_alua_lu_gp_member *lu_gp_mem; |
2184 | ssize_t len = 0, cur_len; | |
2185 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2186 | ||
2187 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2188 | ||
2189 | spin_lock(&lu_gp->lu_gp_lock); | |
2190 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2191 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 2192 | hba = dev->se_hba; |
c66ac9db NB |
2193 | |
2194 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2195 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2196 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
2197 | cur_len++; /* Extra byte for NULL terminator */ |
2198 | ||
2199 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2200 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2201 | "_members buffer\n"); |
2202 | break; | |
2203 | } | |
2204 | memcpy(page+len, buf, cur_len); | |
2205 | len += cur_len; | |
2206 | } | |
2207 | spin_unlock(&lu_gp->lu_gp_lock); | |
2208 | ||
2209 | return len; | |
2210 | } | |
2211 | ||
2eafd729 CH |
2212 | CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); |
2213 | CONFIGFS_ATTR_RO(target_lu_gp_, members); | |
c66ac9db NB |
2214 | |
2215 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2eafd729 CH |
2216 | &target_lu_gp_attr_lu_gp_id, |
2217 | &target_lu_gp_attr_members, | |
c66ac9db NB |
2218 | NULL, |
2219 | }; | |
2220 | ||
1f6fe7cb NB |
2221 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2222 | { | |
2223 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2224 | struct t10_alua_lu_gp, lu_gp_group); | |
2225 | ||
2226 | core_alua_free_lu_gp(lu_gp); | |
2227 | } | |
2228 | ||
c66ac9db | 2229 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2230 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2231 | }; |
2232 | ||
2233 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2234 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2235 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2236 | .ct_owner = THIS_MODULE, | |
2237 | }; | |
2238 | ||
2239 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2240 | ||
2241 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2242 | ||
2243 | static struct config_group *target_core_alua_create_lu_gp( | |
2244 | struct config_group *group, | |
2245 | const char *name) | |
2246 | { | |
2247 | struct t10_alua_lu_gp *lu_gp; | |
2248 | struct config_group *alua_lu_gp_cg = NULL; | |
2249 | struct config_item *alua_lu_gp_ci = NULL; | |
2250 | ||
2251 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2252 | if (IS_ERR(lu_gp)) | |
2253 | return NULL; | |
2254 | ||
2255 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2256 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2257 | ||
2258 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2259 | &target_core_alua_lu_gp_cit); | |
2260 | ||
6708bb27 | 2261 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2262 | " Group: core/alua/lu_gps/%s\n", |
2263 | config_item_name(alua_lu_gp_ci)); | |
2264 | ||
2265 | return alua_lu_gp_cg; | |
2266 | ||
2267 | } | |
2268 | ||
2269 | static void target_core_alua_drop_lu_gp( | |
2270 | struct config_group *group, | |
2271 | struct config_item *item) | |
2272 | { | |
2273 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2274 | struct t10_alua_lu_gp, lu_gp_group); | |
2275 | ||
6708bb27 | 2276 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2277 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2278 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2279 | /* |
2280 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2281 | * -> target_core_alua_lu_gp_release() | |
2282 | */ | |
c66ac9db | 2283 | config_item_put(item); |
c66ac9db NB |
2284 | } |
2285 | ||
2286 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2287 | .make_group = &target_core_alua_create_lu_gp, | |
2288 | .drop_item = &target_core_alua_drop_lu_gp, | |
2289 | }; | |
2290 | ||
2291 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2292 | .ct_item_ops = NULL, | |
2293 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2294 | .ct_owner = THIS_MODULE, | |
2295 | }; | |
2296 | ||
2297 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2298 | ||
2299 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2300 | ||
2eafd729 CH |
2301 | static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) |
2302 | { | |
2303 | return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, | |
2304 | tg_pt_gp_group); | |
2305 | } | |
c66ac9db | 2306 | |
2eafd729 CH |
2307 | static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, |
2308 | char *page) | |
c66ac9db NB |
2309 | { |
2310 | return sprintf(page, "%d\n", | |
2eafd729 | 2311 | atomic_read(&to_tg_pt_gp(item)->tg_pt_gp_alua_access_state)); |
c66ac9db NB |
2312 | } |
2313 | ||
2eafd729 CH |
2314 | static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, |
2315 | const char *page, size_t count) | |
c66ac9db | 2316 | { |
2eafd729 | 2317 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
0fd97ccf | 2318 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2319 | unsigned long tmp; |
2320 | int new_state, ret; | |
2321 | ||
6708bb27 | 2322 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2323 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2324 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2325 | return -EINVAL; | |
2326 | } | |
f1453773 NB |
2327 | if (!(dev->dev_flags & DF_CONFIGURED)) { |
2328 | pr_err("Unable to set alua_access_state while device is" | |
2329 | " not configured\n"); | |
2330 | return -ENODEV; | |
2331 | } | |
c66ac9db | 2332 | |
57103d7f | 2333 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2334 | if (ret < 0) { |
6708bb27 | 2335 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2336 | " %s\n", page); |
57103d7f | 2337 | return ret; |
c66ac9db NB |
2338 | } |
2339 | new_state = (int)tmp; | |
2340 | ||
125d0119 HR |
2341 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2342 | pr_err("Unable to process implicit configfs ALUA" | |
2343 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2344 | return -EINVAL; |
2345 | } | |
c66094bf HR |
2346 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
2347 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
2348 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
2349 | pr_err("Unable to process implicit configfs ALUA transition" | |
2350 | " while explicit ALUA management is enabled\n"); | |
2351 | return -EINVAL; | |
2352 | } | |
c66ac9db | 2353 | |
0fd97ccf | 2354 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2355 | NULL, NULL, new_state, 0); |
2356 | return (!ret) ? count : -EINVAL; | |
2357 | } | |
2358 | ||
2eafd729 CH |
2359 | static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, |
2360 | char *page) | |
c66ac9db | 2361 | { |
2eafd729 | 2362 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2363 | return sprintf(page, "%s\n", |
2364 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2365 | } | |
2366 | ||
2eafd729 CH |
2367 | static ssize_t target_tg_pt_gp_alua_access_status_store( |
2368 | struct config_item *item, const char *page, size_t count) | |
c66ac9db | 2369 | { |
2eafd729 | 2370 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2371 | unsigned long tmp; |
2372 | int new_status, ret; | |
2373 | ||
6708bb27 AG |
2374 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2375 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2376 | " valid tg_pt_gp ID: %hu\n", |
2377 | tg_pt_gp->tg_pt_gp_valid_id); | |
2378 | return -EINVAL; | |
2379 | } | |
2380 | ||
57103d7f | 2381 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2382 | if (ret < 0) { |
6708bb27 | 2383 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2384 | " from %s\n", page); |
57103d7f | 2385 | return ret; |
c66ac9db NB |
2386 | } |
2387 | new_status = (int)tmp; | |
2388 | ||
2389 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2390 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2391 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2392 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2393 | new_status); |
2394 | return -EINVAL; | |
2395 | } | |
2396 | ||
2397 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2398 | return count; | |
2399 | } | |
2400 | ||
2eafd729 CH |
2401 | static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, |
2402 | char *page) | |
c66ac9db | 2403 | { |
2eafd729 | 2404 | return core_alua_show_access_type(to_tg_pt_gp(item), page); |
c66ac9db NB |
2405 | } |
2406 | ||
2eafd729 CH |
2407 | static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, |
2408 | const char *page, size_t count) | |
c66ac9db | 2409 | { |
2eafd729 | 2410 | return core_alua_store_access_type(to_tg_pt_gp(item), page, count); |
c66ac9db NB |
2411 | } |
2412 | ||
2eafd729 CH |
2413 | #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ |
2414 | static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ | |
2415 | struct config_item *item, char *p) \ | |
b0a382c5 | 2416 | { \ |
2eafd729 CH |
2417 | struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ |
2418 | return sprintf(p, "%d\n", \ | |
2419 | !!(t->tg_pt_gp_alua_supported_states & _bit)); \ | |
2420 | } \ | |
2421 | \ | |
2422 | static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ | |
2423 | struct config_item *item, const char *p, size_t c) \ | |
b0a382c5 | 2424 | { \ |
2eafd729 | 2425 | struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ |
b0a382c5 HR |
2426 | unsigned long tmp; \ |
2427 | int ret; \ | |
2428 | \ | |
2429 | if (!t->tg_pt_gp_valid_id) { \ | |
2430 | pr_err("Unable to do set ##_name ALUA state on non" \ | |
2431 | " valid tg_pt_gp ID: %hu\n", \ | |
2432 | t->tg_pt_gp_valid_id); \ | |
2433 | return -EINVAL; \ | |
2434 | } \ | |
2435 | \ | |
2436 | ret = kstrtoul(p, 0, &tmp); \ | |
2437 | if (ret < 0) { \ | |
2438 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2439 | return -EINVAL; \ | |
2440 | } \ | |
2441 | if (tmp > 1) { \ | |
2442 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2443 | return -EINVAL; \ | |
2444 | } \ | |
1f0b030c | 2445 | if (tmp) \ |
2eafd729 | 2446 | t->tg_pt_gp_alua_supported_states |= _bit; \ |
b0a382c5 | 2447 | else \ |
2eafd729 | 2448 | t->tg_pt_gp_alua_supported_states &= ~_bit; \ |
b0a382c5 HR |
2449 | \ |
2450 | return c; \ | |
2451 | } | |
2452 | ||
2eafd729 CH |
2453 | ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); |
2454 | ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); | |
2455 | ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); | |
2456 | ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); | |
2457 | ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); | |
2458 | ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); | |
2459 | ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); | |
6be526c4 | 2460 | |
2eafd729 CH |
2461 | static ssize_t target_tg_pt_gp_alua_write_metadata_show( |
2462 | struct config_item *item, char *page) | |
c66ac9db | 2463 | { |
2eafd729 CH |
2464 | return sprintf(page, "%d\n", |
2465 | to_tg_pt_gp(item)->tg_pt_gp_write_metadata); | |
c66ac9db NB |
2466 | } |
2467 | ||
2eafd729 CH |
2468 | static ssize_t target_tg_pt_gp_alua_write_metadata_store( |
2469 | struct config_item *item, const char *page, size_t count) | |
c66ac9db | 2470 | { |
2eafd729 | 2471 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2472 | unsigned long tmp; |
2473 | int ret; | |
2474 | ||
57103d7f | 2475 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2476 | if (ret < 0) { |
6708bb27 | 2477 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2478 | return ret; |
c66ac9db NB |
2479 | } |
2480 | ||
2481 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2482 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2483 | " %lu\n", tmp); |
2484 | return -EINVAL; | |
2485 | } | |
2486 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2487 | ||
2488 | return count; | |
2489 | } | |
2490 | ||
2eafd729 CH |
2491 | static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, |
2492 | char *page) | |
c66ac9db | 2493 | { |
2eafd729 | 2494 | return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); |
c66ac9db NB |
2495 | } |
2496 | ||
2eafd729 CH |
2497 | static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, |
2498 | const char *page, size_t count) | |
c66ac9db | 2499 | { |
2eafd729 CH |
2500 | return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, |
2501 | count); | |
c66ac9db NB |
2502 | } |
2503 | ||
2eafd729 CH |
2504 | static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, |
2505 | char *page) | |
c66ac9db | 2506 | { |
2eafd729 | 2507 | return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); |
c66ac9db NB |
2508 | } |
2509 | ||
2eafd729 CH |
2510 | static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, |
2511 | const char *page, size_t count) | |
c66ac9db | 2512 | { |
2eafd729 CH |
2513 | return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, |
2514 | count); | |
c66ac9db NB |
2515 | } |
2516 | ||
2eafd729 CH |
2517 | static ssize_t target_tg_pt_gp_implicit_trans_secs_show( |
2518 | struct config_item *item, char *page) | |
5b9a4d72 | 2519 | { |
2eafd729 | 2520 | return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); |
5b9a4d72 NB |
2521 | } |
2522 | ||
2eafd729 CH |
2523 | static ssize_t target_tg_pt_gp_implicit_trans_secs_store( |
2524 | struct config_item *item, const char *page, size_t count) | |
5b9a4d72 | 2525 | { |
2eafd729 CH |
2526 | return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, |
2527 | count); | |
5b9a4d72 NB |
2528 | } |
2529 | ||
2eafd729 CH |
2530 | static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, |
2531 | char *page) | |
c66ac9db | 2532 | { |
2eafd729 | 2533 | return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); |
c66ac9db NB |
2534 | } |
2535 | ||
2eafd729 CH |
2536 | static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, |
2537 | const char *page, size_t count) | |
c66ac9db | 2538 | { |
2eafd729 | 2539 | return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); |
c66ac9db NB |
2540 | } |
2541 | ||
2eafd729 CH |
2542 | static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, |
2543 | char *page) | |
c66ac9db | 2544 | { |
2eafd729 CH |
2545 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
2546 | ||
6708bb27 | 2547 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db | 2548 | return 0; |
c66ac9db NB |
2549 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); |
2550 | } | |
2551 | ||
2eafd729 CH |
2552 | static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, |
2553 | const char *page, size_t count) | |
c66ac9db | 2554 | { |
2eafd729 | 2555 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2556 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; |
2557 | unsigned long tg_pt_gp_id; | |
2558 | int ret; | |
2559 | ||
57103d7f | 2560 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2561 | if (ret < 0) { |
57103d7f | 2562 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2563 | " tg_pt_gp_id\n", ret); |
57103d7f | 2564 | return ret; |
c66ac9db NB |
2565 | } |
2566 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2567 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2568 | " 0x0000ffff\n", tg_pt_gp_id); |
2569 | return -EINVAL; | |
2570 | } | |
2571 | ||
2572 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2573 | if (ret < 0) | |
2574 | return -EINVAL; | |
2575 | ||
6708bb27 | 2576 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2577 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2578 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2579 | tg_pt_gp->tg_pt_gp_id); | |
2580 | ||
2581 | return count; | |
2582 | } | |
2583 | ||
2eafd729 CH |
2584 | static ssize_t target_tg_pt_gp_members_show(struct config_item *item, |
2585 | char *page) | |
c66ac9db | 2586 | { |
2eafd729 | 2587 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db | 2588 | struct se_lun *lun; |
c66ac9db NB |
2589 | ssize_t len = 0, cur_len; |
2590 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2591 | ||
2592 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2593 | ||
2594 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
adf653f9 CH |
2595 | list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, |
2596 | lun_tg_pt_gp_link) { | |
2597 | struct se_portal_group *tpg = lun->lun_tpg; | |
c66ac9db NB |
2598 | |
2599 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2600 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2601 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2602 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2603 | config_item_name(&lun->lun_group.cg_item)); |
2604 | cur_len++; /* Extra byte for NULL terminator */ | |
2605 | ||
2606 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2607 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2608 | "_members buffer\n"); |
2609 | break; | |
2610 | } | |
2611 | memcpy(page+len, buf, cur_len); | |
2612 | len += cur_len; | |
2613 | } | |
2614 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2615 | ||
2616 | return len; | |
2617 | } | |
2618 | ||
2eafd729 CH |
2619 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); |
2620 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); | |
2621 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); | |
2622 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); | |
2623 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); | |
2624 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); | |
2625 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); | |
2626 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); | |
2627 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); | |
2628 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); | |
2629 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); | |
2630 | CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); | |
2631 | CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); | |
2632 | CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); | |
2633 | CONFIGFS_ATTR(target_tg_pt_gp_, preferred); | |
2634 | CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); | |
2635 | CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); | |
c66ac9db NB |
2636 | |
2637 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2eafd729 CH |
2638 | &target_tg_pt_gp_attr_alua_access_state, |
2639 | &target_tg_pt_gp_attr_alua_access_status, | |
2640 | &target_tg_pt_gp_attr_alua_access_type, | |
2641 | &target_tg_pt_gp_attr_alua_support_transitioning, | |
2642 | &target_tg_pt_gp_attr_alua_support_offline, | |
2643 | &target_tg_pt_gp_attr_alua_support_lba_dependent, | |
2644 | &target_tg_pt_gp_attr_alua_support_unavailable, | |
2645 | &target_tg_pt_gp_attr_alua_support_standby, | |
2646 | &target_tg_pt_gp_attr_alua_support_active_nonoptimized, | |
2647 | &target_tg_pt_gp_attr_alua_support_active_optimized, | |
2648 | &target_tg_pt_gp_attr_alua_write_metadata, | |
2649 | &target_tg_pt_gp_attr_nonop_delay_msecs, | |
2650 | &target_tg_pt_gp_attr_trans_delay_msecs, | |
2651 | &target_tg_pt_gp_attr_implicit_trans_secs, | |
2652 | &target_tg_pt_gp_attr_preferred, | |
2653 | &target_tg_pt_gp_attr_tg_pt_gp_id, | |
2654 | &target_tg_pt_gp_attr_members, | |
c66ac9db NB |
2655 | NULL, |
2656 | }; | |
2657 | ||
1f6fe7cb NB |
2658 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2659 | { | |
2660 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2661 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2662 | ||
2663 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2664 | } | |
2665 | ||
c66ac9db | 2666 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2667 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2668 | }; |
2669 | ||
2670 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2671 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2672 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2673 | .ct_owner = THIS_MODULE, | |
2674 | }; | |
2675 | ||
2676 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2677 | ||
72aca57b | 2678 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2679 | |
2680 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2681 | struct config_group *group, | |
2682 | const char *name) | |
2683 | { | |
2684 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2685 | alua_tg_pt_gps_group); | |
2686 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2687 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2688 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2689 | ||
0fd97ccf | 2690 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2691 | if (!tg_pt_gp) |
c66ac9db NB |
2692 | return NULL; |
2693 | ||
2694 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2695 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2696 | ||
2697 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2698 | &target_core_alua_tg_pt_gp_cit); | |
2699 | ||
6708bb27 | 2700 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2701 | " Group: alua/tg_pt_gps/%s\n", |
2702 | config_item_name(alua_tg_pt_gp_ci)); | |
2703 | ||
2704 | return alua_tg_pt_gp_cg; | |
2705 | } | |
2706 | ||
2707 | static void target_core_alua_drop_tg_pt_gp( | |
2708 | struct config_group *group, | |
2709 | struct config_item *item) | |
2710 | { | |
2711 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2712 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2713 | ||
6708bb27 | 2714 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2715 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2716 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2717 | /* |
2718 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2719 | * -> target_core_alua_tg_pt_gp_release(). | |
2720 | */ | |
c66ac9db | 2721 | config_item_put(item); |
c66ac9db NB |
2722 | } |
2723 | ||
2724 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2725 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2726 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2727 | }; | |
2728 | ||
72aca57b | 2729 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 2730 | |
72aca57b | 2731 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2732 | |
2733 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2734 | ||
2735 | /* | |
2736 | * target_core_alua_cit is a ConfigFS group that lives under | |
2737 | * /sys/kernel/config/target/core/alua. There are default groups | |
2738 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2739 | * target_core_alua_cit in target_core_init_configfs() below. | |
2740 | */ | |
2741 | static struct config_item_type target_core_alua_cit = { | |
2742 | .ct_item_ops = NULL, | |
2743 | .ct_attrs = NULL, | |
2744 | .ct_owner = THIS_MODULE, | |
2745 | }; | |
2746 | ||
2747 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2748 | ||
d23ab570 | 2749 | /* Start functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 NB |
2750 | |
2751 | static struct config_group *target_core_stat_mkdir( | |
2752 | struct config_group *group, | |
2753 | const char *name) | |
2754 | { | |
2755 | return ERR_PTR(-ENOSYS); | |
2756 | } | |
2757 | ||
2758 | static void target_core_stat_rmdir( | |
2759 | struct config_group *group, | |
2760 | struct config_item *item) | |
2761 | { | |
2762 | return; | |
2763 | } | |
2764 | ||
2765 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2766 | .make_group = &target_core_stat_mkdir, | |
2767 | .drop_item = &target_core_stat_rmdir, | |
2768 | }; | |
2769 | ||
d23ab570 | 2770 | TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); |
12d23384 | 2771 | |
d23ab570 | 2772 | /* End functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 | 2773 | |
c66ac9db NB |
2774 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2775 | ||
2776 | static struct config_group *target_core_make_subdev( | |
2777 | struct config_group *group, | |
2778 | const char *name) | |
2779 | { | |
2780 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2781 | struct config_item *hba_ci = &group->cg_item; |
2782 | struct se_hba *hba = item_to_hba(hba_ci); | |
0a06d430 | 2783 | struct target_backend *tb = hba->backend; |
0fd97ccf | 2784 | struct se_device *dev; |
c66ac9db | 2785 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
2786 | struct config_group *dev_stat_grp = NULL; |
2787 | int errno = -ENOMEM, ret; | |
c66ac9db | 2788 | |
12d23384 NB |
2789 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2790 | if (ret) | |
2791 | return ERR_PTR(ret); | |
c66ac9db | 2792 | |
0fd97ccf CH |
2793 | dev = target_alloc_device(hba, name); |
2794 | if (!dev) | |
2795 | goto out_unlock; | |
2796 | ||
2797 | dev_cg = &dev->dev_group; | |
c66ac9db | 2798 | |
13f6a914 | 2799 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
c66ac9db | 2800 | GFP_KERNEL); |
6708bb27 | 2801 | if (!dev_cg->default_groups) |
0fd97ccf | 2802 | goto out_free_device; |
c66ac9db | 2803 | |
0a06d430 | 2804 | config_group_init_type_name(dev_cg, name, &tb->tb_dev_cit); |
0fd97ccf | 2805 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
0a06d430 | 2806 | &tb->tb_dev_attrib_cit); |
0fd97ccf | 2807 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
0a06d430 | 2808 | &tb->tb_dev_pr_cit); |
0fd97ccf | 2809 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
0a06d430 | 2810 | &tb->tb_dev_wwn_cit); |
0fd97ccf | 2811 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
0a06d430 | 2812 | "alua", &tb->tb_dev_alua_tg_pt_gps_cit); |
0fd97ccf | 2813 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
0a06d430 | 2814 | "statistics", &tb->tb_dev_stat_cit); |
12d23384 | 2815 | |
0fd97ccf CH |
2816 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
2817 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
2818 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
2819 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
2820 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 2821 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 2822 | /* |
12d23384 | 2823 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2824 | */ |
0fd97ccf | 2825 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2826 | if (!tg_pt_gp) |
0fd97ccf CH |
2827 | goto out_free_dev_cg_default_groups; |
2828 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 2829 | |
0fd97ccf | 2830 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
13f6a914 | 2831 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2832 | GFP_KERNEL); |
6708bb27 AG |
2833 | if (!tg_pt_gp_cg->default_groups) { |
2834 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 2835 | "default_groups\n"); |
0fd97ccf | 2836 | goto out_free_tg_pt_gp; |
c66ac9db NB |
2837 | } |
2838 | ||
2839 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2840 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2841 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2842 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
2843 | /* |
2844 | * Add core/$HBA/$DEV/statistics/ default groups | |
2845 | */ | |
0fd97ccf | 2846 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
13f6a914 | 2847 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
12d23384 NB |
2848 | GFP_KERNEL); |
2849 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2850 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 2851 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 2852 | } |
0fd97ccf | 2853 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2854 | |
2855 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
2856 | return dev_cg; |
2857 | ||
2858 | out_free_tg_pt_gp_cg_default_groups: | |
2859 | kfree(tg_pt_gp_cg->default_groups); | |
2860 | out_free_tg_pt_gp: | |
2861 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2862 | out_free_dev_cg_default_groups: | |
2863 | kfree(dev_cg->default_groups); | |
2864 | out_free_device: | |
2865 | target_free_device(dev); | |
2866 | out_unlock: | |
c66ac9db | 2867 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2868 | return ERR_PTR(errno); |
c66ac9db NB |
2869 | } |
2870 | ||
2871 | static void target_core_drop_subdev( | |
2872 | struct config_group *group, | |
2873 | struct config_item *item) | |
2874 | { | |
0fd97ccf CH |
2875 | struct config_group *dev_cg = to_config_group(item); |
2876 | struct se_device *dev = | |
2877 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2878 | struct se_hba *hba; |
c66ac9db | 2879 | struct config_item *df_item; |
0fd97ccf | 2880 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2881 | int i; |
c66ac9db | 2882 | |
0fd97ccf | 2883 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 2884 | |
1f6fe7cb | 2885 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2886 | |
0fd97ccf | 2887 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2888 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2889 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2890 | dev_stat_grp->default_groups[i] = NULL; | |
2891 | config_item_put(df_item); | |
2892 | } | |
2893 | kfree(dev_stat_grp->default_groups); | |
2894 | ||
0fd97ccf | 2895 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2896 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2897 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2898 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2899 | config_item_put(df_item); | |
2900 | } | |
2901 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2902 | /* |
2903 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2904 | * directly from target_core_alua_tg_pt_gp_release(). | |
2905 | */ | |
0fd97ccf | 2906 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 2907 | |
c66ac9db NB |
2908 | for (i = 0; dev_cg->default_groups[i]; i++) { |
2909 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2910 | dev_cg->default_groups[i] = NULL; | |
2911 | config_item_put(df_item); | |
2912 | } | |
c66ac9db | 2913 | /* |
0fd97ccf | 2914 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 2915 | */ |
1f6fe7cb | 2916 | config_item_put(item); |
c66ac9db | 2917 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2918 | } |
2919 | ||
2920 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2921 | .make_group = target_core_make_subdev, | |
2922 | .drop_item = target_core_drop_subdev, | |
2923 | }; | |
2924 | ||
c66ac9db | 2925 | |
2eafd729 CH |
2926 | static inline struct se_hba *to_hba(struct config_item *item) |
2927 | { | |
2928 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
2929 | } | |
c66ac9db | 2930 | |
2eafd729 | 2931 | static ssize_t target_hba_info_show(struct config_item *item, char *page) |
c66ac9db | 2932 | { |
2eafd729 CH |
2933 | struct se_hba *hba = to_hba(item); |
2934 | ||
c66ac9db | 2935 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", |
0a06d430 | 2936 | hba->hba_id, hba->backend->ops->name, |
ce8dd25d | 2937 | TARGET_CORE_VERSION); |
c66ac9db NB |
2938 | } |
2939 | ||
2eafd729 | 2940 | static ssize_t target_hba_mode_show(struct config_item *item, char *page) |
c66ac9db | 2941 | { |
2eafd729 | 2942 | struct se_hba *hba = to_hba(item); |
c66ac9db NB |
2943 | int hba_mode = 0; |
2944 | ||
2945 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2946 | hba_mode = 1; | |
2947 | ||
2948 | return sprintf(page, "%d\n", hba_mode); | |
2949 | } | |
2950 | ||
2eafd729 CH |
2951 | static ssize_t target_hba_mode_store(struct config_item *item, |
2952 | const char *page, size_t count) | |
c66ac9db | 2953 | { |
2eafd729 | 2954 | struct se_hba *hba = to_hba(item); |
c66ac9db NB |
2955 | unsigned long mode_flag; |
2956 | int ret; | |
2957 | ||
0a06d430 | 2958 | if (hba->backend->ops->pmode_enable_hba == NULL) |
c66ac9db NB |
2959 | return -EINVAL; |
2960 | ||
57103d7f | 2961 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 2962 | if (ret < 0) { |
6708bb27 | 2963 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 2964 | return ret; |
c66ac9db NB |
2965 | } |
2966 | ||
0fd97ccf | 2967 | if (hba->dev_count) { |
6708bb27 | 2968 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
2969 | return -EINVAL; |
2970 | } | |
c66ac9db | 2971 | |
0a06d430 | 2972 | ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); |
c66ac9db NB |
2973 | if (ret < 0) |
2974 | return -EINVAL; | |
2975 | if (ret > 0) | |
2976 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2977 | else if (ret == 0) | |
2978 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2979 | ||
2980 | return count; | |
2981 | } | |
2982 | ||
2eafd729 CH |
2983 | CONFIGFS_ATTR_RO(target_, hba_info); |
2984 | CONFIGFS_ATTR(target_, hba_mode); | |
c66ac9db | 2985 | |
1f6fe7cb NB |
2986 | static void target_core_hba_release(struct config_item *item) |
2987 | { | |
2988 | struct se_hba *hba = container_of(to_config_group(item), | |
2989 | struct se_hba, hba_group); | |
2990 | core_delete_hba(hba); | |
2991 | } | |
2992 | ||
c66ac9db | 2993 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2eafd729 CH |
2994 | &target_attr_hba_info, |
2995 | &target_attr_hba_mode, | |
c66ac9db NB |
2996 | NULL, |
2997 | }; | |
2998 | ||
2999 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3000 | .release = target_core_hba_release, |
c66ac9db NB |
3001 | }; |
3002 | ||
3003 | static struct config_item_type target_core_hba_cit = { | |
3004 | .ct_item_ops = &target_core_hba_item_ops, | |
3005 | .ct_group_ops = &target_core_hba_group_ops, | |
3006 | .ct_attrs = target_core_hba_attrs, | |
3007 | .ct_owner = THIS_MODULE, | |
3008 | }; | |
3009 | ||
3010 | static struct config_group *target_core_call_addhbatotarget( | |
3011 | struct config_group *group, | |
3012 | const char *name) | |
3013 | { | |
3014 | char *se_plugin_str, *str, *str2; | |
3015 | struct se_hba *hba; | |
3016 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3017 | unsigned long plugin_dep_id = 0; | |
3018 | int ret; | |
3019 | ||
3020 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3021 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3022 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3023 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3024 | TARGET_CORE_NAME_MAX_LEN); | |
3025 | return ERR_PTR(-ENAMETOOLONG); | |
3026 | } | |
3027 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3028 | ||
3029 | str = strstr(buf, "_"); | |
6708bb27 AG |
3030 | if (!str) { |
3031 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3032 | return ERR_PTR(-EINVAL); |
3033 | } | |
3034 | se_plugin_str = buf; | |
3035 | /* | |
3036 | * Special case for subsystem plugins that have "_" in their names. | |
3037 | * Namely rd_direct and rd_mcp.. | |
3038 | */ | |
3039 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3040 | if (str2) { |
c66ac9db NB |
3041 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3042 | str2++; /* Skip to start of plugin dependent ID */ | |
3043 | str = str2; | |
3044 | } else { | |
3045 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3046 | str++; /* Skip to start of plugin dependent ID */ | |
3047 | } | |
3048 | ||
57103d7f | 3049 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 3050 | if (ret < 0) { |
57103d7f | 3051 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 3052 | " plugin_dep_id\n", ret); |
57103d7f | 3053 | return ERR_PTR(ret); |
c66ac9db NB |
3054 | } |
3055 | /* | |
3056 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3057 | */ | |
dbc5623e | 3058 | transport_subsystem_check_init(); |
c66ac9db NB |
3059 | |
3060 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3061 | if (IS_ERR(hba)) | |
3062 | return ERR_CAST(hba); | |
3063 | ||
3064 | config_group_init_type_name(&hba->hba_group, name, | |
3065 | &target_core_hba_cit); | |
3066 | ||
3067 | return &hba->hba_group; | |
3068 | } | |
3069 | ||
3070 | static void target_core_call_delhbafromtarget( | |
3071 | struct config_group *group, | |
3072 | struct config_item *item) | |
3073 | { | |
1f6fe7cb NB |
3074 | /* |
3075 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3076 | * -> target_core_hba_release() | |
3077 | */ | |
c66ac9db | 3078 | config_item_put(item); |
c66ac9db NB |
3079 | } |
3080 | ||
3081 | static struct configfs_group_operations target_core_group_ops = { | |
3082 | .make_group = target_core_call_addhbatotarget, | |
3083 | .drop_item = target_core_call_delhbafromtarget, | |
3084 | }; | |
3085 | ||
3086 | static struct config_item_type target_core_cit = { | |
3087 | .ct_item_ops = NULL, | |
3088 | .ct_group_ops = &target_core_group_ops, | |
3089 | .ct_attrs = NULL, | |
3090 | .ct_owner = THIS_MODULE, | |
3091 | }; | |
3092 | ||
3093 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3094 | ||
0a06d430 | 3095 | void target_setup_backend_cits(struct target_backend *tb) |
73112edc | 3096 | { |
0a06d430 CH |
3097 | target_core_setup_dev_cit(tb); |
3098 | target_core_setup_dev_attrib_cit(tb); | |
3099 | target_core_setup_dev_pr_cit(tb); | |
3100 | target_core_setup_dev_wwn_cit(tb); | |
3101 | target_core_setup_dev_alua_tg_pt_gps_cit(tb); | |
3102 | target_core_setup_dev_stat_cit(tb); | |
73112edc | 3103 | } |
73112edc | 3104 | |
54550fab | 3105 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3106 | { |
3107 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3108 | struct config_group *lu_gp_cg = NULL; | |
d588cf8f | 3109 | struct configfs_subsystem *subsys = &target_core_fabrics; |
c66ac9db NB |
3110 | struct t10_alua_lu_gp *lu_gp; |
3111 | int ret; | |
3112 | ||
6708bb27 | 3113 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3114 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3115 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3116 | ||
c66ac9db NB |
3117 | config_group_init(&subsys->su_group); |
3118 | mutex_init(&subsys->su_mutex); | |
3119 | ||
e3d6f909 | 3120 | ret = init_se_kmem_caches(); |
c66ac9db | 3121 | if (ret < 0) |
e3d6f909 | 3122 | return ret; |
c66ac9db NB |
3123 | /* |
3124 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3125 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3126 | */ | |
3127 | target_cg = &subsys->su_group; | |
ab6dae82 | 3128 | target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3129 | GFP_KERNEL); |
6708bb27 AG |
3130 | if (!target_cg->default_groups) { |
3131 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 3132 | ret = -ENOMEM; |
c66ac9db NB |
3133 | goto out_global; |
3134 | } | |
3135 | ||
e3d6f909 | 3136 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3137 | "core", &target_core_cit); |
e3d6f909 | 3138 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3139 | target_cg->default_groups[1] = NULL; |
3140 | /* | |
3141 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3142 | */ | |
e3d6f909 | 3143 | hba_cg = &target_core_hbagroup; |
13f6a914 | 3144 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3145 | GFP_KERNEL); |
6708bb27 AG |
3146 | if (!hba_cg->default_groups) { |
3147 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 3148 | ret = -ENOMEM; |
c66ac9db NB |
3149 | goto out_global; |
3150 | } | |
e3d6f909 | 3151 | config_group_init_type_name(&alua_group, |
c66ac9db | 3152 | "alua", &target_core_alua_cit); |
e3d6f909 | 3153 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3154 | hba_cg->default_groups[1] = NULL; |
3155 | /* | |
3156 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3157 | * groups under /sys/kernel/config/target/core/alua/ | |
3158 | */ | |
e3d6f909 | 3159 | alua_cg = &alua_group; |
13f6a914 | 3160 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3161 | GFP_KERNEL); |
6708bb27 AG |
3162 | if (!alua_cg->default_groups) { |
3163 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 3164 | ret = -ENOMEM; |
c66ac9db NB |
3165 | goto out_global; |
3166 | } | |
3167 | ||
e3d6f909 | 3168 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3169 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3170 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3171 | alua_cg->default_groups[1] = NULL; |
3172 | /* | |
3173 | * Add core/alua/lu_gps/default_lu_gp | |
3174 | */ | |
3175 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
3176 | if (IS_ERR(lu_gp)) { |
3177 | ret = -ENOMEM; | |
c66ac9db | 3178 | goto out_global; |
37bb7899 | 3179 | } |
c66ac9db | 3180 | |
e3d6f909 | 3181 | lu_gp_cg = &alua_lu_gps_group; |
13f6a914 | 3182 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3183 | GFP_KERNEL); |
6708bb27 AG |
3184 | if (!lu_gp_cg->default_groups) { |
3185 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 3186 | ret = -ENOMEM; |
c66ac9db NB |
3187 | goto out_global; |
3188 | } | |
3189 | ||
3190 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3191 | &target_core_alua_lu_gp_cit); | |
3192 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3193 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3194 | default_lu_gp = lu_gp; |
c66ac9db NB |
3195 | /* |
3196 | * Register the target_core_mod subsystem with configfs. | |
3197 | */ | |
3198 | ret = configfs_register_subsystem(subsys); | |
3199 | if (ret < 0) { | |
6708bb27 | 3200 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3201 | ret, subsys->su_group.cg_item.ci_namebuf); |
3202 | goto out_global; | |
3203 | } | |
6708bb27 | 3204 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
ce8dd25d | 3205 | " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" |
c66ac9db NB |
3206 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); |
3207 | /* | |
3208 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3209 | */ | |
3210 | ret = rd_module_init(); | |
3211 | if (ret < 0) | |
3212 | goto out; | |
3213 | ||
0d0f9dfb RD |
3214 | ret = core_dev_setup_virtual_lun0(); |
3215 | if (ret < 0) | |
c66ac9db NB |
3216 | goto out; |
3217 | ||
f99715ac NB |
3218 | ret = target_xcopy_setup_pt(); |
3219 | if (ret < 0) | |
3220 | goto out; | |
3221 | ||
c66ac9db NB |
3222 | return 0; |
3223 | ||
3224 | out: | |
3225 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3226 | core_dev_release_virtual_lun0(); |
3227 | rd_module_exit(); | |
3228 | out_global: | |
e3d6f909 AG |
3229 | if (default_lu_gp) { |
3230 | core_alua_free_lu_gp(default_lu_gp); | |
3231 | default_lu_gp = NULL; | |
c66ac9db NB |
3232 | } |
3233 | if (lu_gp_cg) | |
3234 | kfree(lu_gp_cg->default_groups); | |
3235 | if (alua_cg) | |
3236 | kfree(alua_cg->default_groups); | |
3237 | if (hba_cg) | |
3238 | kfree(hba_cg->default_groups); | |
3239 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3240 | release_se_kmem_caches(); |
3241 | return ret; | |
c66ac9db NB |
3242 | } |
3243 | ||
54550fab | 3244 | static void __exit target_core_exit_configfs(void) |
c66ac9db | 3245 | { |
c66ac9db NB |
3246 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; |
3247 | struct config_item *item; | |
3248 | int i; | |
3249 | ||
e3d6f909 | 3250 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3251 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3252 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3253 | lu_gp_cg->default_groups[i] = NULL; | |
3254 | config_item_put(item); | |
3255 | } | |
3256 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3257 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3258 | |
e3d6f909 | 3259 | alua_cg = &alua_group; |
c66ac9db NB |
3260 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3261 | item = &alua_cg->default_groups[i]->cg_item; | |
3262 | alua_cg->default_groups[i] = NULL; | |
3263 | config_item_put(item); | |
3264 | } | |
3265 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3266 | alua_cg->default_groups = NULL; |
c66ac9db | 3267 | |
e3d6f909 | 3268 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3269 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3270 | item = &hba_cg->default_groups[i]->cg_item; | |
3271 | hba_cg->default_groups[i] = NULL; | |
3272 | config_item_put(item); | |
3273 | } | |
3274 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3275 | hba_cg->default_groups = NULL; |
3276 | /* | |
3277 | * We expect subsys->su_group.default_groups to be released | |
3278 | * by configfs subsystem provider logic.. | |
3279 | */ | |
d588cf8f CH |
3280 | configfs_unregister_subsystem(&target_core_fabrics); |
3281 | kfree(target_core_fabrics.su_group.default_groups); | |
c66ac9db | 3282 | |
e3d6f909 AG |
3283 | core_alua_free_lu_gp(default_lu_gp); |
3284 | default_lu_gp = NULL; | |
7c2bf6e9 | 3285 | |
6708bb27 | 3286 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3287 | " Infrastructure\n"); |
3288 | ||
c66ac9db NB |
3289 | core_dev_release_virtual_lun0(); |
3290 | rd_module_exit(); | |
f99715ac | 3291 | target_xcopy_release_pt(); |
e3d6f909 | 3292 | release_se_kmem_caches(); |
c66ac9db NB |
3293 | } |
3294 | ||
3295 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3296 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3297 | MODULE_LICENSE("GPL"); | |
3298 | ||
3299 | module_init(target_core_init_configfs); | |
3300 | module_exit(target_core_exit_configfs); |