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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 NB |
43 | #include <target/target_core_fabric_configfs.h> |
44 | #include <target/target_core_configfs.h> | |
45 | #include <target/configfs_macros.h> | |
46 | ||
e26d99ae | 47 | #include "target_core_internal.h" |
c66ac9db | 48 | #include "target_core_alua.h" |
c66ac9db NB |
49 | #include "target_core_pr.h" |
50 | #include "target_core_rd.h" | |
f99715ac | 51 | #include "target_core_xcopy.h" |
c66ac9db | 52 | |
73112edc | 53 | #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ |
0a06d430 | 54 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ |
73112edc | 55 | { \ |
0a06d430 | 56 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ |
73112edc NB |
57 | \ |
58 | cit->ct_item_ops = _item_ops; \ | |
59 | cit->ct_group_ops = _group_ops; \ | |
60 | cit->ct_attrs = _attrs; \ | |
0a06d430 CH |
61 | cit->ct_owner = tb->ops->owner; \ |
62 | pr_debug("Setup generic %s\n", __stringify(_name)); \ | |
63 | } | |
64 | ||
65 | #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ | |
66 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ | |
67 | { \ | |
68 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ | |
69 | \ | |
70 | cit->ct_item_ops = _item_ops; \ | |
71 | cit->ct_group_ops = _group_ops; \ | |
72 | cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ | |
73 | cit->ct_owner = tb->ops->owner; \ | |
73112edc NB |
74 | pr_debug("Setup generic %s\n", __stringify(_name)); \ |
75 | } | |
76 | ||
e3d6f909 AG |
77 | extern struct t10_alua_lu_gp *default_lu_gp; |
78 | ||
d0f474e5 RD |
79 | static LIST_HEAD(g_tf_list); |
80 | static DEFINE_MUTEX(g_tf_lock); | |
c66ac9db NB |
81 | |
82 | struct target_core_configfs_attribute { | |
83 | struct configfs_attribute attr; | |
84 | ssize_t (*show)(void *, char *); | |
85 | ssize_t (*store)(void *, const char *, size_t); | |
86 | }; | |
87 | ||
e3d6f909 AG |
88 | static struct config_group target_core_hbagroup; |
89 | static struct config_group alua_group; | |
90 | static struct config_group alua_lu_gps_group; | |
91 | ||
c66ac9db NB |
92 | static inline struct se_hba * |
93 | item_to_hba(struct config_item *item) | |
94 | { | |
95 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
96 | } | |
97 | ||
98 | /* | |
99 | * Attributes for /sys/kernel/config/target/ | |
100 | */ | |
101 | static ssize_t target_core_attr_show(struct config_item *item, | |
102 | struct configfs_attribute *attr, | |
103 | char *page) | |
104 | { | |
105 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
106 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
107 | utsname()->sysname, utsname()->machine); | |
108 | } | |
109 | ||
110 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
111 | .show_attribute = target_core_attr_show, | |
112 | }; | |
113 | ||
114 | static struct configfs_attribute target_core_item_attr_version = { | |
115 | .ca_owner = THIS_MODULE, | |
116 | .ca_name = "version", | |
117 | .ca_mode = S_IRUGO, | |
118 | }; | |
119 | ||
120 | static struct target_fabric_configfs *target_core_get_fabric( | |
121 | const char *name) | |
122 | { | |
123 | struct target_fabric_configfs *tf; | |
124 | ||
6708bb27 | 125 | if (!name) |
c66ac9db NB |
126 | return NULL; |
127 | ||
128 | mutex_lock(&g_tf_lock); | |
129 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
0dc2e8d1 | 130 | if (!strcmp(tf->tf_ops->name, name)) { |
c66ac9db NB |
131 | atomic_inc(&tf->tf_access_cnt); |
132 | mutex_unlock(&g_tf_lock); | |
133 | return tf; | |
134 | } | |
135 | } | |
136 | mutex_unlock(&g_tf_lock); | |
137 | ||
138 | return NULL; | |
139 | } | |
140 | ||
141 | /* | |
142 | * Called from struct target_core_group_ops->make_group() | |
143 | */ | |
144 | static struct config_group *target_core_register_fabric( | |
145 | struct config_group *group, | |
146 | const char *name) | |
147 | { | |
148 | struct target_fabric_configfs *tf; | |
149 | int ret; | |
150 | ||
6708bb27 | 151 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 152 | " %s\n", group, name); |
e7b7af6e RD |
153 | |
154 | tf = target_core_get_fabric(name); | |
155 | if (!tf) { | |
62554910 NB |
156 | pr_debug("target_core_register_fabric() trying autoload for %s\n", |
157 | name); | |
e7b7af6e | 158 | |
c66ac9db | 159 | /* |
e7b7af6e RD |
160 | * Below are some hardcoded request_module() calls to automatically |
161 | * local fabric modules when the following is called: | |
c66ac9db | 162 | * |
e7b7af6e | 163 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 164 | * |
e7b7af6e RD |
165 | * Note that this does not limit which TCM fabric module can be |
166 | * registered, but simply provids auto loading logic for modules with | |
167 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 168 | */ |
e7b7af6e RD |
169 | |
170 | if (!strncmp(name, "iscsi", 5)) { | |
171 | /* | |
172 | * Automatically load the LIO Target fabric module when the | |
173 | * following is called: | |
174 | * | |
175 | * mkdir -p $CONFIGFS/target/iscsi | |
176 | */ | |
177 | ret = request_module("iscsi_target_mod"); | |
178 | if (ret < 0) { | |
62554910 NB |
179 | pr_debug("request_module() failed for" |
180 | " iscsi_target_mod.ko: %d\n", ret); | |
e7b7af6e RD |
181 | return ERR_PTR(-EINVAL); |
182 | } | |
183 | } else if (!strncmp(name, "loopback", 8)) { | |
184 | /* | |
185 | * Automatically load the tcm_loop fabric module when the | |
186 | * following is called: | |
187 | * | |
188 | * mkdir -p $CONFIGFS/target/loopback | |
189 | */ | |
190 | ret = request_module("tcm_loop"); | |
191 | if (ret < 0) { | |
62554910 NB |
192 | pr_debug("request_module() failed for" |
193 | " tcm_loop.ko: %d\n", ret); | |
e7b7af6e RD |
194 | return ERR_PTR(-EINVAL); |
195 | } | |
c66ac9db | 196 | } |
e7b7af6e RD |
197 | |
198 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
199 | } |
200 | ||
6708bb27 | 201 | if (!tf) { |
62554910 NB |
202 | pr_debug("target_core_get_fabric() failed for %s\n", |
203 | name); | |
c66ac9db NB |
204 | return ERR_PTR(-EINVAL); |
205 | } | |
6708bb27 | 206 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
0dc2e8d1 | 207 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
208 | /* |
209 | * On a successful target_core_get_fabric() look, the returned | |
210 | * struct target_fabric_configfs *tf will contain a usage reference. | |
211 | */ | |
6708bb27 | 212 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
968ebe75 | 213 | &tf->tf_wwn_cit); |
c66ac9db NB |
214 | |
215 | tf->tf_group.default_groups = tf->tf_default_groups; | |
216 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
217 | tf->tf_group.default_groups[1] = NULL; | |
218 | ||
968ebe75 | 219 | config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); |
c66ac9db | 220 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
968ebe75 | 221 | &tf->tf_discovery_cit); |
c66ac9db | 222 | |
6708bb27 | 223 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db | 224 | " %s\n", tf->tf_group.cg_item.ci_name); |
c66ac9db NB |
225 | return &tf->tf_group; |
226 | } | |
227 | ||
228 | /* | |
229 | * Called from struct target_core_group_ops->drop_item() | |
230 | */ | |
231 | static void target_core_deregister_fabric( | |
232 | struct config_group *group, | |
233 | struct config_item *item) | |
234 | { | |
235 | struct target_fabric_configfs *tf = container_of( | |
236 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
237 | struct config_group *tf_group; | |
238 | struct config_item *df_item; | |
239 | int i; | |
240 | ||
6708bb27 | 241 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
242 | " tf list\n", config_item_name(item)); |
243 | ||
6708bb27 | 244 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
0dc2e8d1 | 245 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
246 | atomic_dec(&tf->tf_access_cnt); |
247 | ||
6708bb27 | 248 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
249 | " %s\n", config_item_name(item)); |
250 | ||
251 | tf_group = &tf->tf_group; | |
252 | for (i = 0; tf_group->default_groups[i]; i++) { | |
253 | df_item = &tf_group->default_groups[i]->cg_item; | |
254 | tf_group->default_groups[i] = NULL; | |
255 | config_item_put(df_item); | |
256 | } | |
257 | config_item_put(item); | |
258 | } | |
259 | ||
260 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
261 | .make_group = &target_core_register_fabric, | |
262 | .drop_item = &target_core_deregister_fabric, | |
263 | }; | |
264 | ||
265 | /* | |
266 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
267 | */ | |
268 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
269 | &target_core_item_attr_version, | |
270 | NULL, | |
271 | }; | |
272 | ||
273 | /* | |
274 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
275 | */ | |
276 | static struct config_item_type target_core_fabrics_item = { | |
277 | .ct_item_ops = &target_core_fabric_item_ops, | |
278 | .ct_group_ops = &target_core_fabric_group_ops, | |
279 | .ct_attrs = target_core_fabric_item_attrs, | |
280 | .ct_owner = THIS_MODULE, | |
281 | }; | |
282 | ||
283 | static struct configfs_subsystem target_core_fabrics = { | |
284 | .su_group = { | |
285 | .cg_item = { | |
286 | .ci_namebuf = "target", | |
287 | .ci_type = &target_core_fabrics_item, | |
288 | }, | |
289 | }, | |
290 | }; | |
291 | ||
d588cf8f CH |
292 | int target_depend_item(struct config_item *item) |
293 | { | |
294 | return configfs_depend_item(&target_core_fabrics, item); | |
295 | } | |
296 | EXPORT_SYMBOL(target_depend_item); | |
297 | ||
298 | void target_undepend_item(struct config_item *item) | |
299 | { | |
300 | return configfs_undepend_item(&target_core_fabrics, item); | |
301 | } | |
302 | EXPORT_SYMBOL(target_undepend_item); | |
c66ac9db NB |
303 | |
304 | /*############################################################################## | |
305 | // Start functions called by external Target Fabrics Modules | |
306 | //############################################################################*/ | |
307 | ||
9ac8928e | 308 | static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) |
c66ac9db | 309 | { |
9ac8928e CH |
310 | if (!tfo->name) { |
311 | pr_err("Missing tfo->name\n"); | |
312 | return -EINVAL; | |
c66ac9db | 313 | } |
9ac8928e | 314 | if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 315 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
9ac8928e CH |
316 | "_NAME_SIZE\n", tfo->name); |
317 | return -EINVAL; | |
c66ac9db | 318 | } |
6708bb27 AG |
319 | if (!tfo->get_fabric_name) { |
320 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
321 | return -EINVAL; |
322 | } | |
6708bb27 AG |
323 | if (!tfo->tpg_get_wwn) { |
324 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
325 | return -EINVAL; |
326 | } | |
6708bb27 AG |
327 | if (!tfo->tpg_get_tag) { |
328 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
329 | return -EINVAL; |
330 | } | |
6708bb27 AG |
331 | if (!tfo->tpg_check_demo_mode) { |
332 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
333 | return -EINVAL; |
334 | } | |
6708bb27 AG |
335 | if (!tfo->tpg_check_demo_mode_cache) { |
336 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
337 | return -EINVAL; |
338 | } | |
6708bb27 AG |
339 | if (!tfo->tpg_check_demo_mode_write_protect) { |
340 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
341 | return -EINVAL; |
342 | } | |
6708bb27 AG |
343 | if (!tfo->tpg_check_prod_mode_write_protect) { |
344 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
345 | return -EINVAL; |
346 | } | |
6708bb27 AG |
347 | if (!tfo->tpg_get_inst_index) { |
348 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
349 | return -EINVAL; |
350 | } | |
35462975 | 351 | if (!tfo->release_cmd) { |
6708bb27 | 352 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
353 | return -EINVAL; |
354 | } | |
6708bb27 AG |
355 | if (!tfo->shutdown_session) { |
356 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
357 | return -EINVAL; |
358 | } | |
6708bb27 AG |
359 | if (!tfo->close_session) { |
360 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
361 | return -EINVAL; |
362 | } | |
6708bb27 AG |
363 | if (!tfo->sess_get_index) { |
364 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
365 | return -EINVAL; |
366 | } | |
6708bb27 AG |
367 | if (!tfo->write_pending) { |
368 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
369 | return -EINVAL; |
370 | } | |
6708bb27 AG |
371 | if (!tfo->write_pending_status) { |
372 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
373 | return -EINVAL; |
374 | } | |
6708bb27 AG |
375 | if (!tfo->set_default_node_attributes) { |
376 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
377 | return -EINVAL; |
378 | } | |
6708bb27 AG |
379 | if (!tfo->get_cmd_state) { |
380 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
381 | return -EINVAL; |
382 | } | |
6708bb27 AG |
383 | if (!tfo->queue_data_in) { |
384 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
385 | return -EINVAL; |
386 | } | |
6708bb27 AG |
387 | if (!tfo->queue_status) { |
388 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
389 | return -EINVAL; |
390 | } | |
6708bb27 AG |
391 | if (!tfo->queue_tm_rsp) { |
392 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
393 | return -EINVAL; |
394 | } | |
131e6abc NB |
395 | if (!tfo->aborted_task) { |
396 | pr_err("Missing tfo->aborted_task()\n"); | |
397 | return -EINVAL; | |
398 | } | |
c66ac9db NB |
399 | /* |
400 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
401 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
402 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
403 | */ | |
6708bb27 AG |
404 | if (!tfo->fabric_make_wwn) { |
405 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
406 | return -EINVAL; |
407 | } | |
6708bb27 AG |
408 | if (!tfo->fabric_drop_wwn) { |
409 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
410 | return -EINVAL; |
411 | } | |
6708bb27 AG |
412 | if (!tfo->fabric_make_tpg) { |
413 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
414 | return -EINVAL; |
415 | } | |
6708bb27 AG |
416 | if (!tfo->fabric_drop_tpg) { |
417 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
418 | return -EINVAL; |
419 | } | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
9ac8928e | 424 | int target_register_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 425 | { |
9ac8928e | 426 | struct target_fabric_configfs *tf; |
c66ac9db NB |
427 | int ret; |
428 | ||
9ac8928e CH |
429 | ret = target_fabric_tf_ops_check(fo); |
430 | if (ret) | |
431 | return ret; | |
432 | ||
433 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 434 | if (!tf) { |
9ac8928e CH |
435 | pr_err("%s: could not allocate memory!\n", __func__); |
436 | return -ENOMEM; | |
c66ac9db | 437 | } |
c66ac9db | 438 | |
9ac8928e CH |
439 | INIT_LIST_HEAD(&tf->tf_list); |
440 | atomic_set(&tf->tf_access_cnt, 0); | |
ef0caf8d | 441 | tf->tf_ops = fo; |
9ac8928e CH |
442 | target_fabric_setup_cits(tf); |
443 | ||
444 | mutex_lock(&g_tf_lock); | |
445 | list_add_tail(&tf->tf_list, &g_tf_list); | |
446 | mutex_unlock(&g_tf_lock); | |
447 | ||
c66ac9db NB |
448 | return 0; |
449 | } | |
9ac8928e | 450 | EXPORT_SYMBOL(target_register_template); |
c66ac9db | 451 | |
9ac8928e | 452 | void target_unregister_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 453 | { |
9ac8928e | 454 | struct target_fabric_configfs *t; |
c66ac9db | 455 | |
c66ac9db | 456 | mutex_lock(&g_tf_lock); |
9ac8928e | 457 | list_for_each_entry(t, &g_tf_list, tf_list) { |
0dc2e8d1 | 458 | if (!strcmp(t->tf_ops->name, fo->name)) { |
9ac8928e CH |
459 | BUG_ON(atomic_read(&t->tf_access_cnt)); |
460 | list_del(&t->tf_list); | |
461 | kfree(t); | |
462 | break; | |
463 | } | |
c66ac9db | 464 | } |
c66ac9db | 465 | mutex_unlock(&g_tf_lock); |
c66ac9db | 466 | } |
9ac8928e | 467 | EXPORT_SYMBOL(target_unregister_template); |
c66ac9db NB |
468 | |
469 | /*############################################################################## | |
470 | // Stop functions called by external Target Fabrics Modules | |
471 | //############################################################################*/ | |
472 | ||
f79a897e | 473 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 474 | |
c66ac9db | 475 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); |
c66ac9db NB |
476 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); |
477 | ||
c66ac9db NB |
478 | static struct configfs_item_operations target_core_dev_attrib_ops = { |
479 | .show_attribute = target_core_dev_attrib_attr_show, | |
480 | .store_attribute = target_core_dev_attrib_attr_store, | |
481 | }; | |
482 | ||
0a06d430 | 483 | TB_CIT_SETUP_DRV(dev_attrib, &target_core_dev_attrib_ops, NULL); |
c66ac9db | 484 | |
f79a897e | 485 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 486 | |
f8d389c6 | 487 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db NB |
488 | |
489 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
490 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
491 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
492 | __CONFIGFS_EATTR(_name, _mode, \ | |
493 | target_core_dev_wwn_show_attr_##_name, \ | |
494 | target_core_dev_wwn_store_attr_##_name); | |
495 | ||
496 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
497 | do { \ | |
498 | static struct target_core_dev_wwn_attribute \ | |
499 | target_core_dev_wwn_##_name = \ | |
500 | __CONFIGFS_EATTR_RO(_name, \ | |
501 | target_core_dev_wwn_show_attr_##_name); \ | |
502 | } while (0); | |
503 | ||
504 | /* | |
505 | * VPD page 0x80 Unit serial | |
506 | */ | |
507 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
508 | struct t10_wwn *t10_wwn, | |
509 | char *page) | |
510 | { | |
c66ac9db NB |
511 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
512 | &t10_wwn->unit_serial[0]); | |
513 | } | |
514 | ||
515 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
516 | struct t10_wwn *t10_wwn, | |
517 | const char *page, | |
518 | size_t count) | |
519 | { | |
0fd97ccf | 520 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
521 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
522 | ||
523 | /* | |
524 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
525 | * from the struct scsi_device level firmware, do not allow | |
526 | * VPD Unit Serial to be emulated. | |
527 | * | |
528 | * Note this struct scsi_device could also be emulating VPD | |
529 | * information from its drivers/scsi LLD. But for now we assume | |
530 | * it is doing 'the right thing' wrt a world wide unique | |
531 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
532 | */ | |
0fd97ccf | 533 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 534 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
535 | " Unit Serial, ignoring request\n"); |
536 | return -EOPNOTSUPP; | |
537 | } | |
538 | ||
60d645a4 | 539 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 540 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
541 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
542 | return -EOVERFLOW; | |
543 | } | |
544 | /* | |
545 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
546 | * do exist, fail here as changing this information on the fly | |
547 | * (underneath the initiator side OS dependent multipath code) | |
548 | * could cause negative effects. | |
549 | */ | |
0fd97ccf CH |
550 | if (dev->export_count) { |
551 | pr_err("Unable to set VPD Unit Serial while" | |
552 | " active %d $FABRIC_MOD exports exist\n", | |
553 | dev->export_count); | |
554 | return -EINVAL; | |
c66ac9db | 555 | } |
0fd97ccf | 556 | |
c66ac9db NB |
557 | /* |
558 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
559 | * | |
560 | * Also, strip any newline added from the userspace | |
561 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
562 | */ | |
563 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
564 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 565 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 566 | "%s", strstrip(buf)); |
0fd97ccf | 567 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 568 | |
6708bb27 | 569 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 570 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
571 | |
572 | return count; | |
573 | } | |
574 | ||
575 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
576 | ||
577 | /* | |
578 | * VPD page 0x83 Protocol Identifier | |
579 | */ | |
580 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
581 | struct t10_wwn *t10_wwn, | |
582 | char *page) | |
583 | { | |
c66ac9db NB |
584 | struct t10_vpd *vpd; |
585 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
586 | ssize_t len = 0; | |
587 | ||
c66ac9db NB |
588 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
589 | ||
590 | spin_lock(&t10_wwn->t10_vpd_lock); | |
591 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 592 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
593 | continue; |
594 | ||
595 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
596 | ||
6708bb27 | 597 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
598 | break; |
599 | ||
600 | len += sprintf(page+len, "%s", buf); | |
601 | } | |
602 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
603 | ||
604 | return len; | |
605 | } | |
606 | ||
607 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
608 | struct t10_wwn *t10_wwn, | |
609 | const char *page, | |
610 | size_t count) | |
611 | { | |
612 | return -ENOSYS; | |
613 | } | |
614 | ||
615 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
616 | ||
617 | /* | |
618 | * Generic wrapper for dumping VPD identifiers by association. | |
619 | */ | |
620 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
621 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
622 | struct t10_wwn *t10_wwn, \ | |
623 | char *page) \ | |
624 | { \ | |
c66ac9db NB |
625 | struct t10_vpd *vpd; \ |
626 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
627 | ssize_t len = 0; \ | |
628 | \ | |
c66ac9db NB |
629 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
630 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
631 | if (vpd->association != _assoc) \ | |
632 | continue; \ | |
633 | \ | |
634 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
635 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 636 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
637 | break; \ |
638 | len += sprintf(page+len, "%s", buf); \ | |
639 | \ | |
640 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
641 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 642 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
643 | break; \ |
644 | len += sprintf(page+len, "%s", buf); \ | |
645 | \ | |
646 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
647 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 648 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
649 | break; \ |
650 | len += sprintf(page+len, "%s", buf); \ | |
651 | } \ | |
652 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
653 | \ | |
654 | return len; \ | |
655 | } | |
656 | ||
657 | /* | |
163cd5fa | 658 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
659 | */ |
660 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
661 | ||
662 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
663 | struct t10_wwn *t10_wwn, | |
664 | const char *page, | |
665 | size_t count) | |
666 | { | |
667 | return -ENOSYS; | |
668 | } | |
669 | ||
670 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
671 | ||
672 | /* | |
673 | * VPD page 0x83 Association: Target Port | |
674 | */ | |
675 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
676 | ||
677 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
678 | struct t10_wwn *t10_wwn, | |
679 | const char *page, | |
680 | size_t count) | |
681 | { | |
682 | return -ENOSYS; | |
683 | } | |
684 | ||
685 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
686 | ||
687 | /* | |
688 | * VPD page 0x83 Association: SCSI Target Device | |
689 | */ | |
690 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
691 | ||
692 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
693 | struct t10_wwn *t10_wwn, | |
694 | const char *page, | |
695 | size_t count) | |
696 | { | |
697 | return -ENOSYS; | |
698 | } | |
699 | ||
700 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
701 | ||
702 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
703 | ||
704 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
705 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
706 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
707 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
708 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
709 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
710 | NULL, | |
711 | }; | |
712 | ||
713 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
714 | .show_attribute = target_core_dev_wwn_attr_show, | |
715 | .store_attribute = target_core_dev_wwn_attr_store, | |
716 | }; | |
717 | ||
f8d389c6 | 718 | TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 719 | |
f8d389c6 | 720 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 721 | |
91e2e39b | 722 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 723 | |
0fd97ccf | 724 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
c66ac9db NB |
725 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
726 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
727 | __CONFIGFS_EATTR(_name, _mode, \ | |
728 | target_core_dev_pr_show_attr_##_name, \ | |
729 | target_core_dev_pr_store_attr_##_name); | |
730 | ||
731 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
732 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
733 | __CONFIGFS_EATTR_RO(_name, \ | |
734 | target_core_dev_pr_show_attr_##_name); | |
735 | ||
d977f437 CH |
736 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
737 | char *page) | |
c66ac9db NB |
738 | { |
739 | struct se_node_acl *se_nacl; | |
740 | struct t10_pr_registration *pr_reg; | |
741 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
742 | |
743 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
744 | ||
c66ac9db | 745 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
746 | if (!pr_reg) |
747 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
748 | ||
c66ac9db | 749 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 750 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 751 | |
d977f437 | 752 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 753 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 754 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
755 | } |
756 | ||
d977f437 CH |
757 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
758 | char *page) | |
c66ac9db NB |
759 | { |
760 | struct se_node_acl *se_nacl; | |
d977f437 | 761 | ssize_t len; |
c66ac9db | 762 | |
c66ac9db | 763 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
764 | if (se_nacl) { |
765 | len = sprintf(page, | |
766 | "SPC-2 Reservation: %s Initiator: %s\n", | |
767 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
768 | se_nacl->initiatorname); | |
769 | } else { | |
770 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 771 | } |
d977f437 | 772 | return len; |
c66ac9db NB |
773 | } |
774 | ||
0fd97ccf CH |
775 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
776 | char *page) | |
c66ac9db | 777 | { |
d977f437 | 778 | int ret; |
c66ac9db | 779 | |
a3541703 | 780 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 | 781 | return sprintf(page, "Passthrough\n"); |
c66ac9db | 782 | |
d977f437 CH |
783 | spin_lock(&dev->dev_reservation_lock); |
784 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
785 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
786 | else | |
787 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
788 | spin_unlock(&dev->dev_reservation_lock); | |
789 | return ret; | |
c66ac9db NB |
790 | } |
791 | ||
792 | SE_DEV_PR_ATTR_RO(res_holder); | |
793 | ||
c66ac9db | 794 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
0fd97ccf | 795 | struct se_device *dev, char *page) |
c66ac9db | 796 | { |
c66ac9db NB |
797 | ssize_t len = 0; |
798 | ||
c66ac9db | 799 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 800 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 801 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 802 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
803 | len = sprintf(page, "SPC-3 Reservation: All Target" |
804 | " Ports registration\n"); | |
d977f437 | 805 | } else { |
c66ac9db NB |
806 | len = sprintf(page, "SPC-3 Reservation: Single" |
807 | " Target Port registration\n"); | |
d977f437 | 808 | } |
c66ac9db | 809 | |
d977f437 | 810 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
811 | return len; |
812 | } | |
813 | ||
814 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
815 | ||
c66ac9db | 816 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
0fd97ccf | 817 | struct se_device *dev, char *page) |
c66ac9db | 818 | { |
0fd97ccf | 819 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
c66ac9db NB |
820 | } |
821 | ||
822 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
823 | ||
824 | /* | |
825 | * res_pr_holder_tg_port | |
826 | */ | |
827 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
0fd97ccf | 828 | struct se_device *dev, char *page) |
c66ac9db | 829 | { |
c66ac9db | 830 | struct se_node_acl *se_nacl; |
c66ac9db NB |
831 | struct se_portal_group *se_tpg; |
832 | struct t10_pr_registration *pr_reg; | |
9ac8928e | 833 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
834 | ssize_t len = 0; |
835 | ||
c66ac9db NB |
836 | spin_lock(&dev->dev_reservation_lock); |
837 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 838 | if (!pr_reg) { |
c66ac9db | 839 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 840 | goto out_unlock; |
c66ac9db | 841 | } |
d977f437 | 842 | |
c66ac9db NB |
843 | se_nacl = pr_reg->pr_reg_nacl; |
844 | se_tpg = se_nacl->se_tpg; | |
e3d6f909 | 845 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
846 | |
847 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
848 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
849 | tfo->tpg_get_wwn(se_tpg)); | |
850 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 851 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
79dc9c9e | 852 | " %s Logical Unit: %u\n", pr_reg->tg_pt_sep_rtpi, |
c66ac9db | 853 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), |
79dc9c9e | 854 | tfo->get_fabric_name(), pr_reg->pr_aptpl_target_lun); |
c66ac9db | 855 | |
d977f437 CH |
856 | out_unlock: |
857 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
858 | return len; |
859 | } | |
860 | ||
861 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
862 | ||
c66ac9db | 863 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
0fd97ccf | 864 | struct se_device *dev, char *page) |
c66ac9db | 865 | { |
9ac8928e | 866 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
867 | struct t10_pr_registration *pr_reg; |
868 | unsigned char buf[384]; | |
869 | char i_buf[PR_REG_ISID_ID_LEN]; | |
870 | ssize_t len = 0; | |
d2843c17 | 871 | int reg_count = 0; |
c66ac9db | 872 | |
c66ac9db NB |
873 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
874 | ||
0fd97ccf CH |
875 | spin_lock(&dev->t10_pr.registration_lock); |
876 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
877 | pr_reg_list) { |
878 | ||
879 | memset(buf, 0, 384); | |
880 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
881 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 882 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
883 | PR_REG_ISID_ID_LEN); |
884 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
885 | tfo->get_fabric_name(), | |
d2843c17 | 886 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
887 | pr_reg->pr_res_generation); |
888 | ||
6708bb27 | 889 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
890 | break; |
891 | ||
892 | len += sprintf(page+len, "%s", buf); | |
893 | reg_count++; | |
894 | } | |
0fd97ccf | 895 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 896 | |
6708bb27 | 897 | if (!reg_count) |
c66ac9db NB |
898 | len += sprintf(page+len, "None\n"); |
899 | ||
900 | return len; | |
901 | } | |
902 | ||
903 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
904 | ||
c66ac9db | 905 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
0fd97ccf | 906 | struct se_device *dev, char *page) |
c66ac9db | 907 | { |
c66ac9db NB |
908 | struct t10_pr_registration *pr_reg; |
909 | ssize_t len = 0; | |
910 | ||
c66ac9db NB |
911 | spin_lock(&dev->dev_reservation_lock); |
912 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
913 | if (pr_reg) { |
914 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
915 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
916 | } else { | |
c66ac9db | 917 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 918 | } |
c66ac9db | 919 | |
d977f437 | 920 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
921 | return len; |
922 | } | |
923 | ||
924 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
925 | ||
c66ac9db | 926 | static ssize_t target_core_dev_pr_show_attr_res_type( |
0fd97ccf | 927 | struct se_device *dev, char *page) |
c66ac9db | 928 | { |
a3541703 | 929 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 CH |
930 | return sprintf(page, "SPC_PASSTHROUGH\n"); |
931 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
932 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
933 | else | |
934 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
935 | } |
936 | ||
937 | SE_DEV_PR_ATTR_RO(res_type); | |
938 | ||
c66ac9db | 939 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
0fd97ccf | 940 | struct se_device *dev, char *page) |
c66ac9db | 941 | { |
a3541703 | 942 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
c66ac9db NB |
943 | return 0; |
944 | ||
945 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 946 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
947 | } |
948 | ||
949 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
950 | ||
951 | /* | |
952 | * res_aptpl_metadata | |
953 | */ | |
954 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
0fd97ccf | 955 | struct se_device *dev, char *page) |
c66ac9db | 956 | { |
a3541703 | 957 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
c66ac9db NB |
958 | return 0; |
959 | ||
960 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
961 | } | |
962 | ||
963 | enum { | |
964 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
965 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
966 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
967 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
968 | }; | |
969 | ||
970 | static match_table_t tokens = { | |
971 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
972 | {Opt_initiator_node, "initiator_node=%s"}, | |
973 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
974 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
975 | {Opt_res_holder, "res_holder=%d"}, | |
976 | {Opt_res_type, "res_type=%d"}, | |
977 | {Opt_res_scope, "res_scope=%d"}, | |
978 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
979 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
980 | {Opt_target_fabric, "target_fabric=%s"}, | |
981 | {Opt_target_node, "target_node=%s"}, | |
982 | {Opt_tpgt, "tpgt=%d"}, | |
983 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
984 | {Opt_target_lun, "target_lun=%d"}, | |
985 | {Opt_err, NULL} | |
986 | }; | |
987 | ||
988 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
0fd97ccf | 989 | struct se_device *dev, |
c66ac9db NB |
990 | const char *page, |
991 | size_t count) | |
992 | { | |
6d180253 JJ |
993 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
994 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 995 | char *orig, *ptr, *opts; |
c66ac9db NB |
996 | substring_t args[MAX_OPT_ARGS]; |
997 | unsigned long long tmp_ll; | |
998 | u64 sa_res_key = 0; | |
999 | u32 mapped_lun = 0, target_lun = 0; | |
1000 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
45fb94c2 BVA |
1001 | u16 tpgt = 0; |
1002 | u8 type = 0; | |
c66ac9db | 1003 | |
a3541703 | 1004 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 CH |
1005 | return 0; |
1006 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
c66ac9db NB |
1007 | return 0; |
1008 | ||
0fd97ccf | 1009 | if (dev->export_count) { |
6708bb27 | 1010 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1011 | " active fabric exports exist\n"); |
1012 | return -EINVAL; | |
1013 | } | |
1014 | ||
1015 | opts = kstrdup(page, GFP_KERNEL); | |
1016 | if (!opts) | |
1017 | return -ENOMEM; | |
1018 | ||
1019 | orig = opts; | |
90c161b6 | 1020 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1021 | if (!*ptr) |
1022 | continue; | |
1023 | ||
1024 | token = match_token(ptr, tokens, args); | |
1025 | switch (token) { | |
1026 | case Opt_initiator_fabric: | |
8d213559 | 1027 | i_fabric = match_strdup(args); |
6d180253 JJ |
1028 | if (!i_fabric) { |
1029 | ret = -ENOMEM; | |
1030 | goto out; | |
1031 | } | |
c66ac9db NB |
1032 | break; |
1033 | case Opt_initiator_node: | |
8d213559 | 1034 | i_port = match_strdup(args); |
6d180253 JJ |
1035 | if (!i_port) { |
1036 | ret = -ENOMEM; | |
1037 | goto out; | |
1038 | } | |
60d645a4 | 1039 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1040 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1041 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1042 | PR_APTPL_MAX_IPORT_LEN); | |
1043 | ret = -EINVAL; | |
1044 | break; | |
1045 | } | |
1046 | break; | |
1047 | case Opt_initiator_sid: | |
8d213559 | 1048 | isid = match_strdup(args); |
6d180253 JJ |
1049 | if (!isid) { |
1050 | ret = -ENOMEM; | |
1051 | goto out; | |
1052 | } | |
60d645a4 | 1053 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1054 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1055 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1056 | PR_REG_ISID_LEN); | |
1057 | ret = -EINVAL; | |
1058 | break; | |
1059 | } | |
1060 | break; | |
1061 | case Opt_sa_res_key: | |
8d213559 | 1062 | ret = kstrtoull(args->from, 0, &tmp_ll); |
c66ac9db | 1063 | if (ret < 0) { |
8d213559 | 1064 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1065 | goto out; |
1066 | } | |
1067 | sa_res_key = (u64)tmp_ll; | |
1068 | break; | |
1069 | /* | |
1070 | * PR APTPL Metadata for Reservation | |
1071 | */ | |
1072 | case Opt_res_holder: | |
1073 | match_int(args, &arg); | |
1074 | res_holder = arg; | |
1075 | break; | |
1076 | case Opt_res_type: | |
1077 | match_int(args, &arg); | |
1078 | type = (u8)arg; | |
1079 | break; | |
1080 | case Opt_res_scope: | |
1081 | match_int(args, &arg); | |
c66ac9db NB |
1082 | break; |
1083 | case Opt_res_all_tg_pt: | |
1084 | match_int(args, &arg); | |
1085 | all_tg_pt = (int)arg; | |
1086 | break; | |
1087 | case Opt_mapped_lun: | |
1088 | match_int(args, &arg); | |
1089 | mapped_lun = (u32)arg; | |
1090 | break; | |
1091 | /* | |
1092 | * PR APTPL Metadata for Target Port | |
1093 | */ | |
1094 | case Opt_target_fabric: | |
8d213559 | 1095 | t_fabric = match_strdup(args); |
6d180253 JJ |
1096 | if (!t_fabric) { |
1097 | ret = -ENOMEM; | |
1098 | goto out; | |
1099 | } | |
c66ac9db NB |
1100 | break; |
1101 | case Opt_target_node: | |
8d213559 | 1102 | t_port = match_strdup(args); |
6d180253 JJ |
1103 | if (!t_port) { |
1104 | ret = -ENOMEM; | |
1105 | goto out; | |
1106 | } | |
60d645a4 | 1107 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1108 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1109 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1110 | PR_APTPL_MAX_TPORT_LEN); | |
1111 | ret = -EINVAL; | |
1112 | break; | |
1113 | } | |
1114 | break; | |
1115 | case Opt_tpgt: | |
1116 | match_int(args, &arg); | |
1117 | tpgt = (u16)arg; | |
1118 | break; | |
1119 | case Opt_port_rtpi: | |
1120 | match_int(args, &arg); | |
c66ac9db NB |
1121 | break; |
1122 | case Opt_target_lun: | |
1123 | match_int(args, &arg); | |
1124 | target_lun = (u32)arg; | |
1125 | break; | |
1126 | default: | |
1127 | break; | |
1128 | } | |
1129 | } | |
1130 | ||
6708bb27 AG |
1131 | if (!i_port || !t_port || !sa_res_key) { |
1132 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1133 | ret = -EINVAL; |
1134 | goto out; | |
1135 | } | |
1136 | ||
1137 | if (res_holder && !(type)) { | |
6708bb27 | 1138 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1139 | " holder\n", type); |
1140 | ret = -EINVAL; | |
1141 | goto out; | |
1142 | } | |
1143 | ||
0fd97ccf | 1144 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1145 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1146 | res_holder, all_tg_pt, type); | |
1147 | out: | |
6d180253 JJ |
1148 | kfree(i_fabric); |
1149 | kfree(i_port); | |
1150 | kfree(isid); | |
1151 | kfree(t_fabric); | |
1152 | kfree(t_port); | |
c66ac9db NB |
1153 | kfree(orig); |
1154 | return (ret == 0) ? count : ret; | |
1155 | } | |
1156 | ||
1157 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1158 | ||
0fd97ccf | 1159 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
c66ac9db NB |
1160 | |
1161 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1162 | &target_core_dev_pr_res_holder.attr, | |
1163 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1164 | &target_core_dev_pr_res_pr_generation.attr, | |
1165 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1166 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1167 | &target_core_dev_pr_res_pr_type.attr, | |
1168 | &target_core_dev_pr_res_type.attr, | |
1169 | &target_core_dev_pr_res_aptpl_active.attr, | |
1170 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1171 | NULL, | |
1172 | }; | |
1173 | ||
1174 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1175 | .show_attribute = target_core_dev_pr_attr_show, | |
1176 | .store_attribute = target_core_dev_pr_attr_store, | |
1177 | }; | |
1178 | ||
91e2e39b | 1179 | TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); |
c66ac9db | 1180 | |
91e2e39b | 1181 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1182 | |
73112edc | 1183 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
1184 | |
1185 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1186 | { | |
0fd97ccf | 1187 | struct se_device *dev = p; |
c66ac9db NB |
1188 | int bl = 0; |
1189 | ssize_t read_bytes = 0; | |
1190 | ||
0fd97ccf | 1191 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1192 | read_bytes += bl; |
0a06d430 CH |
1193 | read_bytes += dev->transport->show_configfs_dev_params(dev, |
1194 | page+read_bytes); | |
c66ac9db NB |
1195 | return read_bytes; |
1196 | } | |
1197 | ||
1198 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1199 | .attr = { .ca_owner = THIS_MODULE, | |
1200 | .ca_name = "info", | |
1201 | .ca_mode = S_IRUGO }, | |
1202 | .show = target_core_show_dev_info, | |
1203 | .store = NULL, | |
1204 | }; | |
1205 | ||
1206 | static ssize_t target_core_store_dev_control( | |
1207 | void *p, | |
1208 | const char *page, | |
1209 | size_t count) | |
1210 | { | |
0fd97ccf | 1211 | struct se_device *dev = p; |
c66ac9db | 1212 | |
0a06d430 | 1213 | return dev->transport->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1214 | } |
1215 | ||
1216 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1217 | .attr = { .ca_owner = THIS_MODULE, | |
1218 | .ca_name = "control", | |
1219 | .ca_mode = S_IWUSR }, | |
1220 | .show = NULL, | |
1221 | .store = target_core_store_dev_control, | |
1222 | }; | |
1223 | ||
1224 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1225 | { | |
0fd97ccf | 1226 | struct se_device *dev = p; |
c66ac9db | 1227 | |
0fd97ccf | 1228 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1229 | return 0; |
1230 | ||
0fd97ccf | 1231 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1232 | } |
1233 | ||
1234 | static ssize_t target_core_store_dev_alias( | |
1235 | void *p, | |
1236 | const char *page, | |
1237 | size_t count) | |
1238 | { | |
0fd97ccf CH |
1239 | struct se_device *dev = p; |
1240 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1241 | ssize_t read_bytes; |
1242 | ||
1243 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1244 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1245 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1246 | SE_DEV_ALIAS_LEN-1); | |
1247 | return -EINVAL; | |
1248 | } | |
1249 | ||
0fd97ccf | 1250 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1251 | if (!read_bytes) |
1252 | return -EINVAL; | |
0fd97ccf CH |
1253 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1254 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1255 | |
0fd97ccf | 1256 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1257 | |
6708bb27 | 1258 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1259 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1260 | config_item_name(&dev->dev_group.cg_item), |
1261 | dev->dev_alias); | |
c66ac9db NB |
1262 | |
1263 | return read_bytes; | |
1264 | } | |
1265 | ||
1266 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1267 | .attr = { .ca_owner = THIS_MODULE, | |
1268 | .ca_name = "alias", | |
1269 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1270 | .show = target_core_show_dev_alias, | |
1271 | .store = target_core_store_dev_alias, | |
1272 | }; | |
1273 | ||
1274 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1275 | { | |
0fd97ccf | 1276 | struct se_device *dev = p; |
c66ac9db | 1277 | |
0fd97ccf | 1278 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1279 | return 0; |
1280 | ||
0fd97ccf | 1281 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1282 | } |
1283 | ||
1284 | static ssize_t target_core_store_dev_udev_path( | |
1285 | void *p, | |
1286 | const char *page, | |
1287 | size_t count) | |
1288 | { | |
0fd97ccf CH |
1289 | struct se_device *dev = p; |
1290 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1291 | ssize_t read_bytes; |
1292 | ||
1293 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1294 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1295 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1296 | SE_UDEV_PATH_LEN-1); | |
1297 | return -EINVAL; | |
1298 | } | |
1299 | ||
0fd97ccf | 1300 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1301 | "%s", page); |
3011684c DC |
1302 | if (!read_bytes) |
1303 | return -EINVAL; | |
0fd97ccf CH |
1304 | if (dev->udev_path[read_bytes - 1] == '\n') |
1305 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1306 | |
0fd97ccf | 1307 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1308 | |
6708bb27 | 1309 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1310 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1311 | config_item_name(&dev->dev_group.cg_item), |
1312 | dev->udev_path); | |
c66ac9db NB |
1313 | |
1314 | return read_bytes; | |
1315 | } | |
1316 | ||
1317 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1318 | .attr = { .ca_owner = THIS_MODULE, | |
1319 | .ca_name = "udev_path", | |
1320 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1321 | .show = target_core_show_dev_udev_path, | |
1322 | .store = target_core_store_dev_udev_path, | |
1323 | }; | |
1324 | ||
64146db7 AG |
1325 | static ssize_t target_core_show_dev_enable(void *p, char *page) |
1326 | { | |
1327 | struct se_device *dev = p; | |
1328 | ||
1329 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); | |
1330 | } | |
1331 | ||
c66ac9db NB |
1332 | static ssize_t target_core_store_dev_enable( |
1333 | void *p, | |
1334 | const char *page, | |
1335 | size_t count) | |
1336 | { | |
0fd97ccf | 1337 | struct se_device *dev = p; |
c66ac9db | 1338 | char *ptr; |
0fd97ccf | 1339 | int ret; |
c66ac9db NB |
1340 | |
1341 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1342 | if (!ptr) { |
1343 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1344 | " is \"1\"\n"); |
1345 | return -EINVAL; | |
1346 | } | |
c66ac9db | 1347 | |
0fd97ccf CH |
1348 | ret = target_configure_device(dev); |
1349 | if (ret) | |
1350 | return ret; | |
c66ac9db NB |
1351 | return count; |
1352 | } | |
1353 | ||
1354 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1355 | .attr = { .ca_owner = THIS_MODULE, | |
1356 | .ca_name = "enable", | |
64146db7 AG |
1357 | .ca_mode = S_IRUGO | S_IWUSR }, |
1358 | .show = target_core_show_dev_enable, | |
c66ac9db NB |
1359 | .store = target_core_store_dev_enable, |
1360 | }; | |
1361 | ||
1362 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1363 | { | |
0fd97ccf | 1364 | struct se_device *dev = p; |
c66ac9db NB |
1365 | struct config_item *lu_ci; |
1366 | struct t10_alua_lu_gp *lu_gp; | |
1367 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1368 | ssize_t len = 0; | |
1369 | ||
c66ac9db | 1370 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1371 | if (!lu_gp_mem) |
1372 | return 0; | |
c66ac9db NB |
1373 | |
1374 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1375 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1376 | if (lu_gp) { |
c66ac9db NB |
1377 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1378 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1379 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1380 | } | |
1381 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1382 | ||
1383 | return len; | |
1384 | } | |
1385 | ||
1386 | static ssize_t target_core_store_alua_lu_gp( | |
1387 | void *p, | |
1388 | const char *page, | |
1389 | size_t count) | |
1390 | { | |
0fd97ccf CH |
1391 | struct se_device *dev = p; |
1392 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1393 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
1394 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1395 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1396 | int move = 0; | |
1397 | ||
c87fbd56 CH |
1398 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
1399 | if (!lu_gp_mem) | |
1400 | return 0; | |
1401 | ||
c66ac9db | 1402 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 1403 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1404 | return -EINVAL; |
1405 | } | |
1406 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1407 | memcpy(buf, page, count); | |
1408 | /* | |
1409 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1410 | * making a new group association. | |
1411 | */ | |
1412 | if (strcmp(strstrip(buf), "NULL")) { | |
1413 | /* | |
1414 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1415 | * struct t10_alua_lu_gp. This reference is released with | |
1416 | * core_alua_get_lu_gp_by_name below(). | |
1417 | */ | |
1418 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1419 | if (!lu_gp_new) |
c66ac9db NB |
1420 | return -ENODEV; |
1421 | } | |
c66ac9db NB |
1422 | |
1423 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1424 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1425 | if (lu_gp) { |
c66ac9db NB |
1426 | /* |
1427 | * Clearing an existing lu_gp association, and replacing | |
1428 | * with NULL | |
1429 | */ | |
6708bb27 AG |
1430 | if (!lu_gp_new) { |
1431 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1432 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1433 | " %hu\n", | |
1434 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1435 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1436 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
1437 | lu_gp->lu_gp_id); | |
1438 | ||
1439 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1440 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1441 | ||
1442 | return count; | |
1443 | } | |
1444 | /* | |
1445 | * Removing existing association of lu_gp_mem with lu_gp | |
1446 | */ | |
1447 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1448 | move = 1; | |
1449 | } | |
1450 | /* | |
1451 | * Associate lu_gp_mem with lu_gp_new. | |
1452 | */ | |
1453 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1454 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1455 | ||
6708bb27 | 1456 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1457 | " core/alua/lu_gps/%s, ID: %hu\n", |
1458 | (move) ? "Moving" : "Adding", | |
1459 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1460 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1461 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
1462 | lu_gp_new->lu_gp_id); | |
1463 | ||
1464 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1465 | return count; | |
1466 | } | |
1467 | ||
1468 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1469 | .attr = { .ca_owner = THIS_MODULE, | |
1470 | .ca_name = "alua_lu_gp", | |
1471 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1472 | .show = target_core_show_alua_lu_gp, | |
1473 | .store = target_core_store_alua_lu_gp, | |
1474 | }; | |
1475 | ||
229d4f11 HR |
1476 | static ssize_t target_core_show_dev_lba_map(void *p, char *page) |
1477 | { | |
1478 | struct se_device *dev = p; | |
1479 | struct t10_alua_lba_map *map; | |
1480 | struct t10_alua_lba_map_member *mem; | |
1481 | char *b = page; | |
1482 | int bl = 0; | |
1483 | char state; | |
1484 | ||
1485 | spin_lock(&dev->t10_alua.lba_map_lock); | |
1486 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
1487 | bl += sprintf(b + bl, "%u %u\n", | |
1488 | dev->t10_alua.lba_map_segment_size, | |
1489 | dev->t10_alua.lba_map_segment_multiplier); | |
1490 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
1491 | bl += sprintf(b + bl, "%llu %llu", | |
1492 | map->lba_map_first_lba, map->lba_map_last_lba); | |
1493 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
1494 | lba_map_mem_list) { | |
1495 | switch (mem->lba_map_mem_alua_state) { | |
1496 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
1497 | state = 'O'; | |
1498 | break; | |
1499 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
1500 | state = 'A'; | |
1501 | break; | |
1502 | case ALUA_ACCESS_STATE_STANDBY: | |
1503 | state = 'S'; | |
1504 | break; | |
1505 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
1506 | state = 'U'; | |
1507 | break; | |
1508 | default: | |
1509 | state = '.'; | |
1510 | break; | |
1511 | } | |
1512 | bl += sprintf(b + bl, " %d:%c", | |
1513 | mem->lba_map_mem_alua_pg_id, state); | |
1514 | } | |
1515 | bl += sprintf(b + bl, "\n"); | |
1516 | } | |
1517 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
1518 | return bl; | |
1519 | } | |
1520 | ||
1521 | static ssize_t target_core_store_dev_lba_map( | |
1522 | void *p, | |
1523 | const char *page, | |
1524 | size_t count) | |
1525 | { | |
1526 | struct se_device *dev = p; | |
1527 | struct t10_alua_lba_map *lba_map = NULL; | |
1528 | struct list_head lba_list; | |
1529 | char *map_entries, *ptr; | |
1530 | char state; | |
1531 | int pg_num = -1, pg; | |
1532 | int ret = 0, num = 0, pg_id, alua_state; | |
1533 | unsigned long start_lba = -1, end_lba = -1; | |
1534 | unsigned long segment_size = -1, segment_mult = -1; | |
1535 | ||
1536 | map_entries = kstrdup(page, GFP_KERNEL); | |
1537 | if (!map_entries) | |
1538 | return -ENOMEM; | |
1539 | ||
1540 | INIT_LIST_HEAD(&lba_list); | |
1541 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
1542 | if (!*ptr) | |
1543 | continue; | |
1544 | ||
1545 | if (num == 0) { | |
1546 | if (sscanf(ptr, "%lu %lu\n", | |
1547 | &segment_size, &segment_mult) != 2) { | |
1548 | pr_err("Invalid line %d\n", num); | |
1549 | ret = -EINVAL; | |
1550 | break; | |
1551 | } | |
1552 | num++; | |
1553 | continue; | |
1554 | } | |
1555 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
1556 | pr_err("Invalid line %d\n", num); | |
1557 | ret = -EINVAL; | |
1558 | break; | |
1559 | } | |
1560 | ptr = strchr(ptr, ' '); | |
1561 | if (!ptr) { | |
1562 | pr_err("Invalid line %d, missing end lba\n", num); | |
1563 | ret = -EINVAL; | |
1564 | break; | |
1565 | } | |
1566 | ptr++; | |
1567 | ptr = strchr(ptr, ' '); | |
1568 | if (!ptr) { | |
1569 | pr_err("Invalid line %d, missing state definitions\n", | |
1570 | num); | |
1571 | ret = -EINVAL; | |
1572 | break; | |
1573 | } | |
1574 | ptr++; | |
1575 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
1576 | start_lba, end_lba); | |
1577 | if (IS_ERR(lba_map)) { | |
1578 | ret = PTR_ERR(lba_map); | |
1579 | break; | |
1580 | } | |
1581 | pg = 0; | |
1582 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
1583 | switch (state) { | |
1584 | case 'O': | |
1585 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
1586 | break; | |
1587 | case 'A': | |
1588 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
1589 | break; | |
1590 | case 'S': | |
1591 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
1592 | break; | |
1593 | case 'U': | |
1594 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
1595 | break; | |
1596 | default: | |
1597 | pr_err("Invalid ALUA state '%c'\n", state); | |
1598 | ret = -EINVAL; | |
1599 | goto out; | |
1600 | } | |
1601 | ||
1602 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
1603 | pg_id, alua_state); | |
1604 | if (ret) { | |
1605 | pr_err("Invalid target descriptor %d:%c " | |
1606 | "at line %d\n", | |
1607 | pg_id, state, num); | |
1608 | break; | |
1609 | } | |
1610 | pg++; | |
1611 | ptr = strchr(ptr, ' '); | |
1612 | if (ptr) | |
1613 | ptr++; | |
1614 | else | |
1615 | break; | |
1616 | } | |
1617 | if (pg_num == -1) | |
1618 | pg_num = pg; | |
1619 | else if (pg != pg_num) { | |
1620 | pr_err("Only %d from %d port groups definitions " | |
1621 | "at line %d\n", pg, pg_num, num); | |
1622 | ret = -EINVAL; | |
1623 | break; | |
1624 | } | |
1625 | num++; | |
1626 | } | |
1627 | out: | |
1628 | if (ret) { | |
1629 | core_alua_free_lba_map(&lba_list); | |
1630 | count = ret; | |
1631 | } else | |
1632 | core_alua_set_lba_map(dev, &lba_list, | |
1633 | segment_size, segment_mult); | |
1634 | kfree(map_entries); | |
1635 | return count; | |
1636 | } | |
1637 | ||
1638 | static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { | |
1639 | .attr = { .ca_owner = THIS_MODULE, | |
1640 | .ca_name = "lba_map", | |
1641 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1642 | .show = target_core_show_dev_lba_map, | |
1643 | .store = target_core_store_dev_lba_map, | |
1644 | }; | |
1645 | ||
73112edc | 1646 | static struct configfs_attribute *target_core_dev_attrs[] = { |
c66ac9db NB |
1647 | &target_core_attr_dev_info.attr, |
1648 | &target_core_attr_dev_control.attr, | |
1649 | &target_core_attr_dev_alias.attr, | |
1650 | &target_core_attr_dev_udev_path.attr, | |
1651 | &target_core_attr_dev_enable.attr, | |
1652 | &target_core_attr_dev_alua_lu_gp.attr, | |
229d4f11 | 1653 | &target_core_attr_dev_lba_map.attr, |
c66ac9db NB |
1654 | NULL, |
1655 | }; | |
1656 | ||
1657 | static void target_core_dev_release(struct config_item *item) | |
1658 | { | |
0fd97ccf CH |
1659 | struct config_group *dev_cg = to_config_group(item); |
1660 | struct se_device *dev = | |
1661 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 1662 | |
c66ac9db | 1663 | kfree(dev_cg->default_groups); |
0fd97ccf | 1664 | target_free_device(dev); |
c66ac9db NB |
1665 | } |
1666 | ||
1667 | static ssize_t target_core_dev_show(struct config_item *item, | |
1668 | struct configfs_attribute *attr, | |
1669 | char *page) | |
1670 | { | |
0fd97ccf CH |
1671 | struct config_group *dev_cg = to_config_group(item); |
1672 | struct se_device *dev = | |
1673 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1674 | struct target_core_configfs_attribute *tc_attr = container_of( |
1675 | attr, struct target_core_configfs_attribute, attr); | |
1676 | ||
6708bb27 | 1677 | if (!tc_attr->show) |
c66ac9db NB |
1678 | return -EINVAL; |
1679 | ||
0fd97ccf | 1680 | return tc_attr->show(dev, page); |
c66ac9db NB |
1681 | } |
1682 | ||
1683 | static ssize_t target_core_dev_store(struct config_item *item, | |
1684 | struct configfs_attribute *attr, | |
1685 | const char *page, size_t count) | |
1686 | { | |
0fd97ccf CH |
1687 | struct config_group *dev_cg = to_config_group(item); |
1688 | struct se_device *dev = | |
1689 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1690 | struct target_core_configfs_attribute *tc_attr = container_of( |
1691 | attr, struct target_core_configfs_attribute, attr); | |
1692 | ||
6708bb27 | 1693 | if (!tc_attr->store) |
c66ac9db NB |
1694 | return -EINVAL; |
1695 | ||
0fd97ccf | 1696 | return tc_attr->store(dev, page, count); |
c66ac9db NB |
1697 | } |
1698 | ||
1699 | static struct configfs_item_operations target_core_dev_item_ops = { | |
1700 | .release = target_core_dev_release, | |
1701 | .show_attribute = target_core_dev_show, | |
1702 | .store_attribute = target_core_dev_store, | |
1703 | }; | |
1704 | ||
73112edc | 1705 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 1706 | |
73112edc | 1707 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
1708 | |
1709 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1710 | ||
1711 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
1712 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
1713 | static struct target_core_alua_lu_gp_attribute \ | |
1714 | target_core_alua_lu_gp_##_name = \ | |
1715 | __CONFIGFS_EATTR(_name, _mode, \ | |
1716 | target_core_alua_lu_gp_show_attr_##_name, \ | |
1717 | target_core_alua_lu_gp_store_attr_##_name); | |
1718 | ||
1719 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
1720 | static struct target_core_alua_lu_gp_attribute \ | |
1721 | target_core_alua_lu_gp_##_name = \ | |
1722 | __CONFIGFS_EATTR_RO(_name, \ | |
1723 | target_core_alua_lu_gp_show_attr_##_name); | |
1724 | ||
1725 | /* | |
1726 | * lu_gp_id | |
1727 | */ | |
1728 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
1729 | struct t10_alua_lu_gp *lu_gp, | |
1730 | char *page) | |
1731 | { | |
6708bb27 | 1732 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
1733 | return 0; |
1734 | ||
1735 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
1736 | } | |
1737 | ||
1738 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
1739 | struct t10_alua_lu_gp *lu_gp, | |
1740 | const char *page, | |
1741 | size_t count) | |
1742 | { | |
1743 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1744 | unsigned long lu_gp_id; | |
1745 | int ret; | |
1746 | ||
57103d7f | 1747 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 1748 | if (ret < 0) { |
57103d7f | 1749 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 1750 | " lu_gp_id\n", ret); |
57103d7f | 1751 | return ret; |
c66ac9db NB |
1752 | } |
1753 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 1754 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
1755 | " 0x0000ffff\n", lu_gp_id); |
1756 | return -EINVAL; | |
1757 | } | |
1758 | ||
1759 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
1760 | if (ret < 0) | |
1761 | return -EINVAL; | |
1762 | ||
6708bb27 | 1763 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
1764 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
1765 | config_item_name(&alua_lu_gp_cg->cg_item), | |
1766 | lu_gp->lu_gp_id); | |
1767 | ||
1768 | return count; | |
1769 | } | |
1770 | ||
1771 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
1772 | ||
1773 | /* | |
1774 | * members | |
1775 | */ | |
1776 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
1777 | struct t10_alua_lu_gp *lu_gp, | |
1778 | char *page) | |
1779 | { | |
1780 | struct se_device *dev; | |
1781 | struct se_hba *hba; | |
c66ac9db NB |
1782 | struct t10_alua_lu_gp_member *lu_gp_mem; |
1783 | ssize_t len = 0, cur_len; | |
1784 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1785 | ||
1786 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1787 | ||
1788 | spin_lock(&lu_gp->lu_gp_lock); | |
1789 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
1790 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 1791 | hba = dev->se_hba; |
c66ac9db NB |
1792 | |
1793 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
1794 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1795 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
1796 | cur_len++; /* Extra byte for NULL terminator */ |
1797 | ||
1798 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 1799 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
1800 | "_members buffer\n"); |
1801 | break; | |
1802 | } | |
1803 | memcpy(page+len, buf, cur_len); | |
1804 | len += cur_len; | |
1805 | } | |
1806 | spin_unlock(&lu_gp->lu_gp_lock); | |
1807 | ||
1808 | return len; | |
1809 | } | |
1810 | ||
1811 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
1812 | ||
1813 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
1814 | ||
1815 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
1816 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
1817 | &target_core_alua_lu_gp_members.attr, | |
1818 | NULL, | |
1819 | }; | |
1820 | ||
1f6fe7cb NB |
1821 | static void target_core_alua_lu_gp_release(struct config_item *item) |
1822 | { | |
1823 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1824 | struct t10_alua_lu_gp, lu_gp_group); | |
1825 | ||
1826 | core_alua_free_lu_gp(lu_gp); | |
1827 | } | |
1828 | ||
c66ac9db | 1829 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 1830 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
1831 | .show_attribute = target_core_alua_lu_gp_attr_show, |
1832 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
1833 | }; | |
1834 | ||
1835 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
1836 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
1837 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
1838 | .ct_owner = THIS_MODULE, | |
1839 | }; | |
1840 | ||
1841 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1842 | ||
1843 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
1844 | ||
1845 | static struct config_group *target_core_alua_create_lu_gp( | |
1846 | struct config_group *group, | |
1847 | const char *name) | |
1848 | { | |
1849 | struct t10_alua_lu_gp *lu_gp; | |
1850 | struct config_group *alua_lu_gp_cg = NULL; | |
1851 | struct config_item *alua_lu_gp_ci = NULL; | |
1852 | ||
1853 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
1854 | if (IS_ERR(lu_gp)) | |
1855 | return NULL; | |
1856 | ||
1857 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1858 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
1859 | ||
1860 | config_group_init_type_name(alua_lu_gp_cg, name, | |
1861 | &target_core_alua_lu_gp_cit); | |
1862 | ||
6708bb27 | 1863 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
1864 | " Group: core/alua/lu_gps/%s\n", |
1865 | config_item_name(alua_lu_gp_ci)); | |
1866 | ||
1867 | return alua_lu_gp_cg; | |
1868 | ||
1869 | } | |
1870 | ||
1871 | static void target_core_alua_drop_lu_gp( | |
1872 | struct config_group *group, | |
1873 | struct config_item *item) | |
1874 | { | |
1875 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1876 | struct t10_alua_lu_gp, lu_gp_group); | |
1877 | ||
6708bb27 | 1878 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
1879 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
1880 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
1881 | /* |
1882 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
1883 | * -> target_core_alua_lu_gp_release() | |
1884 | */ | |
c66ac9db | 1885 | config_item_put(item); |
c66ac9db NB |
1886 | } |
1887 | ||
1888 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
1889 | .make_group = &target_core_alua_create_lu_gp, | |
1890 | .drop_item = &target_core_alua_drop_lu_gp, | |
1891 | }; | |
1892 | ||
1893 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
1894 | .ct_item_ops = NULL, | |
1895 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
1896 | .ct_owner = THIS_MODULE, | |
1897 | }; | |
1898 | ||
1899 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
1900 | ||
1901 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
1902 | ||
1903 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
1904 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
1905 | static struct target_core_alua_tg_pt_gp_attribute \ | |
1906 | target_core_alua_tg_pt_gp_##_name = \ | |
1907 | __CONFIGFS_EATTR(_name, _mode, \ | |
1908 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
1909 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
1910 | ||
1911 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
1912 | static struct target_core_alua_tg_pt_gp_attribute \ | |
1913 | target_core_alua_tg_pt_gp_##_name = \ | |
1914 | __CONFIGFS_EATTR_RO(_name, \ | |
1915 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
1916 | ||
1917 | /* | |
1918 | * alua_access_state | |
1919 | */ | |
1920 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
1921 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
1922 | char *page) | |
1923 | { | |
1924 | return sprintf(page, "%d\n", | |
1925 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
1926 | } | |
1927 | ||
1928 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
1929 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
1930 | const char *page, | |
1931 | size_t count) | |
1932 | { | |
0fd97ccf | 1933 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
1934 | unsigned long tmp; |
1935 | int new_state, ret; | |
1936 | ||
6708bb27 | 1937 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 1938 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
1939 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
1940 | return -EINVAL; | |
1941 | } | |
f1453773 NB |
1942 | if (!(dev->dev_flags & DF_CONFIGURED)) { |
1943 | pr_err("Unable to set alua_access_state while device is" | |
1944 | " not configured\n"); | |
1945 | return -ENODEV; | |
1946 | } | |
c66ac9db | 1947 | |
57103d7f | 1948 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 1949 | if (ret < 0) { |
6708bb27 | 1950 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 1951 | " %s\n", page); |
57103d7f | 1952 | return ret; |
c66ac9db NB |
1953 | } |
1954 | new_state = (int)tmp; | |
1955 | ||
125d0119 HR |
1956 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
1957 | pr_err("Unable to process implicit configfs ALUA" | |
1958 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
1959 | return -EINVAL; |
1960 | } | |
c66094bf HR |
1961 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
1962 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
1963 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
1964 | pr_err("Unable to process implicit configfs ALUA transition" | |
1965 | " while explicit ALUA management is enabled\n"); | |
1966 | return -EINVAL; | |
1967 | } | |
c66ac9db | 1968 | |
0fd97ccf | 1969 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
1970 | NULL, NULL, new_state, 0); |
1971 | return (!ret) ? count : -EINVAL; | |
1972 | } | |
1973 | ||
1974 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
1975 | ||
1976 | /* | |
1977 | * alua_access_status | |
1978 | */ | |
1979 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
1980 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
1981 | char *page) | |
1982 | { | |
1983 | return sprintf(page, "%s\n", | |
1984 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
1985 | } | |
1986 | ||
1987 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
1988 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
1989 | const char *page, | |
1990 | size_t count) | |
1991 | { | |
1992 | unsigned long tmp; | |
1993 | int new_status, ret; | |
1994 | ||
6708bb27 AG |
1995 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
1996 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
1997 | " valid tg_pt_gp ID: %hu\n", |
1998 | tg_pt_gp->tg_pt_gp_valid_id); | |
1999 | return -EINVAL; | |
2000 | } | |
2001 | ||
57103d7f | 2002 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2003 | if (ret < 0) { |
6708bb27 | 2004 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2005 | " from %s\n", page); |
57103d7f | 2006 | return ret; |
c66ac9db NB |
2007 | } |
2008 | new_status = (int)tmp; | |
2009 | ||
2010 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2011 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2012 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2013 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2014 | new_status); |
2015 | return -EINVAL; | |
2016 | } | |
2017 | ||
2018 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2019 | return count; | |
2020 | } | |
2021 | ||
2022 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2023 | ||
2024 | /* | |
2025 | * alua_access_type | |
2026 | */ | |
2027 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2028 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2029 | char *page) | |
2030 | { | |
2031 | return core_alua_show_access_type(tg_pt_gp, page); | |
2032 | } | |
2033 | ||
2034 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2035 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2036 | const char *page, | |
2037 | size_t count) | |
2038 | { | |
2039 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2040 | } | |
2041 | ||
2042 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2043 | ||
6be526c4 HR |
2044 | /* |
2045 | * alua_supported_states | |
2046 | */ | |
6be526c4 | 2047 | |
b0a382c5 HR |
2048 | #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ |
2049 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ | |
2050 | struct t10_alua_tg_pt_gp *t, char *p) \ | |
2051 | { \ | |
2052 | return sprintf(p, "%d\n", !!(t->_var & _bit)); \ | |
6be526c4 HR |
2053 | } |
2054 | ||
b0a382c5 HR |
2055 | #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ |
2056 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ | |
2057 | struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ | |
2058 | { \ | |
2059 | unsigned long tmp; \ | |
2060 | int ret; \ | |
2061 | \ | |
2062 | if (!t->tg_pt_gp_valid_id) { \ | |
2063 | pr_err("Unable to do set ##_name ALUA state on non" \ | |
2064 | " valid tg_pt_gp ID: %hu\n", \ | |
2065 | t->tg_pt_gp_valid_id); \ | |
2066 | return -EINVAL; \ | |
2067 | } \ | |
2068 | \ | |
2069 | ret = kstrtoul(p, 0, &tmp); \ | |
2070 | if (ret < 0) { \ | |
2071 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2072 | return -EINVAL; \ | |
2073 | } \ | |
2074 | if (tmp > 1) { \ | |
2075 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2076 | return -EINVAL; \ | |
2077 | } \ | |
1f0b030c | 2078 | if (tmp) \ |
b0a382c5 HR |
2079 | t->_var |= _bit; \ |
2080 | else \ | |
2081 | t->_var &= ~_bit; \ | |
2082 | \ | |
2083 | return c; \ | |
2084 | } | |
2085 | ||
2086 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, | |
2087 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2088 | SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, | |
2089 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2090 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); | |
2091 | ||
2092 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, | |
2093 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2094 | SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, | |
2095 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2096 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); | |
2097 | ||
2098 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, | |
2099 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
2100 | SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, | |
2101 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
c66094bf | 2102 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); |
b0a382c5 HR |
2103 | |
2104 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, | |
2105 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2106 | SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, | |
2107 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2108 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); | |
2109 | ||
2110 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, | |
2111 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2112 | SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, | |
2113 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2114 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); | |
2115 | ||
2116 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, | |
2117 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2118 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, | |
2119 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2120 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); | |
2121 | ||
2122 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, | |
2123 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2124 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, | |
2125 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2126 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); | |
6be526c4 | 2127 | |
c66ac9db NB |
2128 | /* |
2129 | * alua_write_metadata | |
2130 | */ | |
2131 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2132 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2133 | char *page) | |
2134 | { | |
2135 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2136 | } | |
2137 | ||
2138 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2139 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2140 | const char *page, | |
2141 | size_t count) | |
2142 | { | |
2143 | unsigned long tmp; | |
2144 | int ret; | |
2145 | ||
57103d7f | 2146 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2147 | if (ret < 0) { |
6708bb27 | 2148 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2149 | return ret; |
c66ac9db NB |
2150 | } |
2151 | ||
2152 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2153 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2154 | " %lu\n", tmp); |
2155 | return -EINVAL; | |
2156 | } | |
2157 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2158 | ||
2159 | return count; | |
2160 | } | |
2161 | ||
2162 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2163 | ||
2164 | ||
2165 | ||
2166 | /* | |
2167 | * nonop_delay_msecs | |
2168 | */ | |
2169 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2170 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2171 | char *page) | |
2172 | { | |
2173 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2174 | ||
2175 | } | |
2176 | ||
2177 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2178 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2179 | const char *page, | |
2180 | size_t count) | |
2181 | { | |
2182 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2183 | } | |
2184 | ||
2185 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2186 | ||
2187 | /* | |
2188 | * trans_delay_msecs | |
2189 | */ | |
2190 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2191 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2192 | char *page) | |
2193 | { | |
2194 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2195 | } | |
2196 | ||
2197 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2198 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2199 | const char *page, | |
2200 | size_t count) | |
2201 | { | |
2202 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2203 | } | |
2204 | ||
2205 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2206 | ||
5b9a4d72 | 2207 | /* |
125d0119 | 2208 | * implicit_trans_secs |
5b9a4d72 | 2209 | */ |
125d0119 | 2210 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( |
5b9a4d72 NB |
2211 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2212 | char *page) | |
2213 | { | |
125d0119 | 2214 | return core_alua_show_implicit_trans_secs(tg_pt_gp, page); |
5b9a4d72 NB |
2215 | } |
2216 | ||
125d0119 | 2217 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( |
5b9a4d72 NB |
2218 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2219 | const char *page, | |
2220 | size_t count) | |
2221 | { | |
125d0119 | 2222 | return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); |
5b9a4d72 NB |
2223 | } |
2224 | ||
125d0119 | 2225 | SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); |
5b9a4d72 | 2226 | |
c66ac9db NB |
2227 | /* |
2228 | * preferred | |
2229 | */ | |
2230 | ||
2231 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2232 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2233 | char *page) | |
2234 | { | |
2235 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2236 | } | |
2237 | ||
2238 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2239 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2240 | const char *page, | |
2241 | size_t count) | |
2242 | { | |
2243 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2244 | } | |
2245 | ||
2246 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2247 | ||
2248 | /* | |
2249 | * tg_pt_gp_id | |
2250 | */ | |
2251 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2252 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2253 | char *page) | |
2254 | { | |
6708bb27 | 2255 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2256 | return 0; |
2257 | ||
2258 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2259 | } | |
2260 | ||
2261 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2262 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2263 | const char *page, | |
2264 | size_t count) | |
2265 | { | |
2266 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2267 | unsigned long tg_pt_gp_id; | |
2268 | int ret; | |
2269 | ||
57103d7f | 2270 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2271 | if (ret < 0) { |
57103d7f | 2272 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2273 | " tg_pt_gp_id\n", ret); |
57103d7f | 2274 | return ret; |
c66ac9db NB |
2275 | } |
2276 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2277 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2278 | " 0x0000ffff\n", tg_pt_gp_id); |
2279 | return -EINVAL; | |
2280 | } | |
2281 | ||
2282 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2283 | if (ret < 0) | |
2284 | return -EINVAL; | |
2285 | ||
6708bb27 | 2286 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2287 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2288 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2289 | tg_pt_gp->tg_pt_gp_id); | |
2290 | ||
2291 | return count; | |
2292 | } | |
2293 | ||
2294 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2295 | ||
2296 | /* | |
2297 | * members | |
2298 | */ | |
2299 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2300 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2301 | char *page) | |
2302 | { | |
2303 | struct se_port *port; | |
2304 | struct se_portal_group *tpg; | |
2305 | struct se_lun *lun; | |
2306 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2307 | ssize_t len = 0, cur_len; | |
2308 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2309 | ||
2310 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2311 | ||
2312 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2313 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2314 | tg_pt_gp_mem_list) { | |
2315 | port = tg_pt_gp_mem->tg_pt; | |
2316 | tpg = port->sep_tpg; | |
2317 | lun = port->sep_lun; | |
2318 | ||
2319 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2320 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2321 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2322 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2323 | config_item_name(&lun->lun_group.cg_item)); |
2324 | cur_len++; /* Extra byte for NULL terminator */ | |
2325 | ||
2326 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2327 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2328 | "_members buffer\n"); |
2329 | break; | |
2330 | } | |
2331 | memcpy(page+len, buf, cur_len); | |
2332 | len += cur_len; | |
2333 | } | |
2334 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2335 | ||
2336 | return len; | |
2337 | } | |
2338 | ||
2339 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2340 | ||
2341 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2342 | tg_pt_gp_group); | |
2343 | ||
2344 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2345 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2346 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2347 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
b0a382c5 HR |
2348 | &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, |
2349 | &target_core_alua_tg_pt_gp_alua_support_offline.attr, | |
2350 | &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, | |
2351 | &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, | |
2352 | &target_core_alua_tg_pt_gp_alua_support_standby.attr, | |
2353 | &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, | |
2354 | &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, | |
c66ac9db NB |
2355 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, |
2356 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2357 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
125d0119 | 2358 | &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, |
c66ac9db NB |
2359 | &target_core_alua_tg_pt_gp_preferred.attr, |
2360 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2361 | &target_core_alua_tg_pt_gp_members.attr, | |
2362 | NULL, | |
2363 | }; | |
2364 | ||
1f6fe7cb NB |
2365 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2366 | { | |
2367 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2368 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2369 | ||
2370 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2371 | } | |
2372 | ||
c66ac9db | 2373 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2374 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2375 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2376 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2377 | }; | |
2378 | ||
2379 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2380 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2381 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2382 | .ct_owner = THIS_MODULE, | |
2383 | }; | |
2384 | ||
2385 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2386 | ||
72aca57b | 2387 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2388 | |
2389 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2390 | struct config_group *group, | |
2391 | const char *name) | |
2392 | { | |
2393 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2394 | alua_tg_pt_gps_group); | |
2395 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2396 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2397 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2398 | ||
0fd97ccf | 2399 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2400 | if (!tg_pt_gp) |
c66ac9db NB |
2401 | return NULL; |
2402 | ||
2403 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2404 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2405 | ||
2406 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2407 | &target_core_alua_tg_pt_gp_cit); | |
2408 | ||
6708bb27 | 2409 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2410 | " Group: alua/tg_pt_gps/%s\n", |
2411 | config_item_name(alua_tg_pt_gp_ci)); | |
2412 | ||
2413 | return alua_tg_pt_gp_cg; | |
2414 | } | |
2415 | ||
2416 | static void target_core_alua_drop_tg_pt_gp( | |
2417 | struct config_group *group, | |
2418 | struct config_item *item) | |
2419 | { | |
2420 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2421 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2422 | ||
6708bb27 | 2423 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2424 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2425 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2426 | /* |
2427 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2428 | * -> target_core_alua_tg_pt_gp_release(). | |
2429 | */ | |
c66ac9db | 2430 | config_item_put(item); |
c66ac9db NB |
2431 | } |
2432 | ||
2433 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2434 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2435 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2436 | }; | |
2437 | ||
72aca57b | 2438 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 2439 | |
72aca57b | 2440 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2441 | |
2442 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2443 | ||
2444 | /* | |
2445 | * target_core_alua_cit is a ConfigFS group that lives under | |
2446 | * /sys/kernel/config/target/core/alua. There are default groups | |
2447 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2448 | * target_core_alua_cit in target_core_init_configfs() below. | |
2449 | */ | |
2450 | static struct config_item_type target_core_alua_cit = { | |
2451 | .ct_item_ops = NULL, | |
2452 | .ct_attrs = NULL, | |
2453 | .ct_owner = THIS_MODULE, | |
2454 | }; | |
2455 | ||
2456 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2457 | ||
d23ab570 | 2458 | /* Start functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 NB |
2459 | |
2460 | static struct config_group *target_core_stat_mkdir( | |
2461 | struct config_group *group, | |
2462 | const char *name) | |
2463 | { | |
2464 | return ERR_PTR(-ENOSYS); | |
2465 | } | |
2466 | ||
2467 | static void target_core_stat_rmdir( | |
2468 | struct config_group *group, | |
2469 | struct config_item *item) | |
2470 | { | |
2471 | return; | |
2472 | } | |
2473 | ||
2474 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2475 | .make_group = &target_core_stat_mkdir, | |
2476 | .drop_item = &target_core_stat_rmdir, | |
2477 | }; | |
2478 | ||
d23ab570 | 2479 | TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); |
12d23384 | 2480 | |
d23ab570 | 2481 | /* End functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 | 2482 | |
c66ac9db NB |
2483 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2484 | ||
2485 | static struct config_group *target_core_make_subdev( | |
2486 | struct config_group *group, | |
2487 | const char *name) | |
2488 | { | |
2489 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2490 | struct config_item *hba_ci = &group->cg_item; |
2491 | struct se_hba *hba = item_to_hba(hba_ci); | |
0a06d430 | 2492 | struct target_backend *tb = hba->backend; |
0fd97ccf | 2493 | struct se_device *dev; |
c66ac9db | 2494 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
2495 | struct config_group *dev_stat_grp = NULL; |
2496 | int errno = -ENOMEM, ret; | |
c66ac9db | 2497 | |
12d23384 NB |
2498 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2499 | if (ret) | |
2500 | return ERR_PTR(ret); | |
c66ac9db | 2501 | |
0fd97ccf CH |
2502 | dev = target_alloc_device(hba, name); |
2503 | if (!dev) | |
2504 | goto out_unlock; | |
2505 | ||
2506 | dev_cg = &dev->dev_group; | |
c66ac9db | 2507 | |
13f6a914 | 2508 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
c66ac9db | 2509 | GFP_KERNEL); |
6708bb27 | 2510 | if (!dev_cg->default_groups) |
0fd97ccf | 2511 | goto out_free_device; |
c66ac9db | 2512 | |
0a06d430 | 2513 | config_group_init_type_name(dev_cg, name, &tb->tb_dev_cit); |
0fd97ccf | 2514 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
0a06d430 | 2515 | &tb->tb_dev_attrib_cit); |
0fd97ccf | 2516 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
0a06d430 | 2517 | &tb->tb_dev_pr_cit); |
0fd97ccf | 2518 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
0a06d430 | 2519 | &tb->tb_dev_wwn_cit); |
0fd97ccf | 2520 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
0a06d430 | 2521 | "alua", &tb->tb_dev_alua_tg_pt_gps_cit); |
0fd97ccf | 2522 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
0a06d430 | 2523 | "statistics", &tb->tb_dev_stat_cit); |
12d23384 | 2524 | |
0fd97ccf CH |
2525 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
2526 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
2527 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
2528 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
2529 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 2530 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 2531 | /* |
12d23384 | 2532 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2533 | */ |
0fd97ccf | 2534 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2535 | if (!tg_pt_gp) |
0fd97ccf CH |
2536 | goto out_free_dev_cg_default_groups; |
2537 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 2538 | |
0fd97ccf | 2539 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
13f6a914 | 2540 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2541 | GFP_KERNEL); |
6708bb27 AG |
2542 | if (!tg_pt_gp_cg->default_groups) { |
2543 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 2544 | "default_groups\n"); |
0fd97ccf | 2545 | goto out_free_tg_pt_gp; |
c66ac9db NB |
2546 | } |
2547 | ||
2548 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2549 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2550 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2551 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
2552 | /* |
2553 | * Add core/$HBA/$DEV/statistics/ default groups | |
2554 | */ | |
0fd97ccf | 2555 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
13f6a914 | 2556 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
12d23384 NB |
2557 | GFP_KERNEL); |
2558 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2559 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 2560 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 2561 | } |
0fd97ccf | 2562 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2563 | |
2564 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
2565 | return dev_cg; |
2566 | ||
2567 | out_free_tg_pt_gp_cg_default_groups: | |
2568 | kfree(tg_pt_gp_cg->default_groups); | |
2569 | out_free_tg_pt_gp: | |
2570 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2571 | out_free_dev_cg_default_groups: | |
2572 | kfree(dev_cg->default_groups); | |
2573 | out_free_device: | |
2574 | target_free_device(dev); | |
2575 | out_unlock: | |
c66ac9db | 2576 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2577 | return ERR_PTR(errno); |
c66ac9db NB |
2578 | } |
2579 | ||
2580 | static void target_core_drop_subdev( | |
2581 | struct config_group *group, | |
2582 | struct config_item *item) | |
2583 | { | |
0fd97ccf CH |
2584 | struct config_group *dev_cg = to_config_group(item); |
2585 | struct se_device *dev = | |
2586 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2587 | struct se_hba *hba; |
c66ac9db | 2588 | struct config_item *df_item; |
0fd97ccf | 2589 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2590 | int i; |
c66ac9db | 2591 | |
0fd97ccf | 2592 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 2593 | |
1f6fe7cb | 2594 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2595 | |
0fd97ccf | 2596 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2597 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2598 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2599 | dev_stat_grp->default_groups[i] = NULL; | |
2600 | config_item_put(df_item); | |
2601 | } | |
2602 | kfree(dev_stat_grp->default_groups); | |
2603 | ||
0fd97ccf | 2604 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2605 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2606 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2607 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2608 | config_item_put(df_item); | |
2609 | } | |
2610 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2611 | /* |
2612 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2613 | * directly from target_core_alua_tg_pt_gp_release(). | |
2614 | */ | |
0fd97ccf | 2615 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 2616 | |
c66ac9db NB |
2617 | for (i = 0; dev_cg->default_groups[i]; i++) { |
2618 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2619 | dev_cg->default_groups[i] = NULL; | |
2620 | config_item_put(df_item); | |
2621 | } | |
c66ac9db | 2622 | /* |
0fd97ccf | 2623 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 2624 | */ |
1f6fe7cb | 2625 | config_item_put(item); |
c66ac9db | 2626 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2627 | } |
2628 | ||
2629 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2630 | .make_group = target_core_make_subdev, | |
2631 | .drop_item = target_core_drop_subdev, | |
2632 | }; | |
2633 | ||
2634 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2635 | #define SE_HBA_ATTR(_name, _mode) \ | |
2636 | static struct target_core_hba_attribute \ | |
2637 | target_core_hba_##_name = \ | |
2638 | __CONFIGFS_EATTR(_name, _mode, \ | |
2639 | target_core_hba_show_attr_##_name, \ | |
2640 | target_core_hba_store_attr_##_name); | |
2641 | ||
2642 | #define SE_HBA_ATTR_RO(_name) \ | |
2643 | static struct target_core_hba_attribute \ | |
2644 | target_core_hba_##_name = \ | |
2645 | __CONFIGFS_EATTR_RO(_name, \ | |
2646 | target_core_hba_show_attr_##_name); | |
2647 | ||
2648 | static ssize_t target_core_hba_show_attr_hba_info( | |
2649 | struct se_hba *hba, | |
2650 | char *page) | |
2651 | { | |
2652 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
0a06d430 | 2653 | hba->hba_id, hba->backend->ops->name, |
c66ac9db NB |
2654 | TARGET_CORE_CONFIGFS_VERSION); |
2655 | } | |
2656 | ||
2657 | SE_HBA_ATTR_RO(hba_info); | |
2658 | ||
2659 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2660 | char *page) | |
2661 | { | |
2662 | int hba_mode = 0; | |
2663 | ||
2664 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2665 | hba_mode = 1; | |
2666 | ||
2667 | return sprintf(page, "%d\n", hba_mode); | |
2668 | } | |
2669 | ||
2670 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2671 | const char *page, size_t count) | |
2672 | { | |
c66ac9db NB |
2673 | unsigned long mode_flag; |
2674 | int ret; | |
2675 | ||
0a06d430 | 2676 | if (hba->backend->ops->pmode_enable_hba == NULL) |
c66ac9db NB |
2677 | return -EINVAL; |
2678 | ||
57103d7f | 2679 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 2680 | if (ret < 0) { |
6708bb27 | 2681 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 2682 | return ret; |
c66ac9db NB |
2683 | } |
2684 | ||
0fd97ccf | 2685 | if (hba->dev_count) { |
6708bb27 | 2686 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
2687 | return -EINVAL; |
2688 | } | |
c66ac9db | 2689 | |
0a06d430 | 2690 | ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); |
c66ac9db NB |
2691 | if (ret < 0) |
2692 | return -EINVAL; | |
2693 | if (ret > 0) | |
2694 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2695 | else if (ret == 0) | |
2696 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2697 | ||
2698 | return count; | |
2699 | } | |
2700 | ||
2701 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2702 | ||
2703 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2704 | ||
1f6fe7cb NB |
2705 | static void target_core_hba_release(struct config_item *item) |
2706 | { | |
2707 | struct se_hba *hba = container_of(to_config_group(item), | |
2708 | struct se_hba, hba_group); | |
2709 | core_delete_hba(hba); | |
2710 | } | |
2711 | ||
c66ac9db NB |
2712 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2713 | &target_core_hba_hba_info.attr, | |
2714 | &target_core_hba_hba_mode.attr, | |
2715 | NULL, | |
2716 | }; | |
2717 | ||
2718 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2719 | .release = target_core_hba_release, |
c66ac9db NB |
2720 | .show_attribute = target_core_hba_attr_show, |
2721 | .store_attribute = target_core_hba_attr_store, | |
2722 | }; | |
2723 | ||
2724 | static struct config_item_type target_core_hba_cit = { | |
2725 | .ct_item_ops = &target_core_hba_item_ops, | |
2726 | .ct_group_ops = &target_core_hba_group_ops, | |
2727 | .ct_attrs = target_core_hba_attrs, | |
2728 | .ct_owner = THIS_MODULE, | |
2729 | }; | |
2730 | ||
2731 | static struct config_group *target_core_call_addhbatotarget( | |
2732 | struct config_group *group, | |
2733 | const char *name) | |
2734 | { | |
2735 | char *se_plugin_str, *str, *str2; | |
2736 | struct se_hba *hba; | |
2737 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
2738 | unsigned long plugin_dep_id = 0; | |
2739 | int ret; | |
2740 | ||
2741 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 2742 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 2743 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
2744 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
2745 | TARGET_CORE_NAME_MAX_LEN); | |
2746 | return ERR_PTR(-ENAMETOOLONG); | |
2747 | } | |
2748 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
2749 | ||
2750 | str = strstr(buf, "_"); | |
6708bb27 AG |
2751 | if (!str) { |
2752 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
2753 | return ERR_PTR(-EINVAL); |
2754 | } | |
2755 | se_plugin_str = buf; | |
2756 | /* | |
2757 | * Special case for subsystem plugins that have "_" in their names. | |
2758 | * Namely rd_direct and rd_mcp.. | |
2759 | */ | |
2760 | str2 = strstr(str+1, "_"); | |
6708bb27 | 2761 | if (str2) { |
c66ac9db NB |
2762 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
2763 | str2++; /* Skip to start of plugin dependent ID */ | |
2764 | str = str2; | |
2765 | } else { | |
2766 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
2767 | str++; /* Skip to start of plugin dependent ID */ | |
2768 | } | |
2769 | ||
57103d7f | 2770 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 2771 | if (ret < 0) { |
57103d7f | 2772 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2773 | " plugin_dep_id\n", ret); |
57103d7f | 2774 | return ERR_PTR(ret); |
c66ac9db NB |
2775 | } |
2776 | /* | |
2777 | * Load up TCM subsystem plugins if they have not already been loaded. | |
2778 | */ | |
dbc5623e | 2779 | transport_subsystem_check_init(); |
c66ac9db NB |
2780 | |
2781 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
2782 | if (IS_ERR(hba)) | |
2783 | return ERR_CAST(hba); | |
2784 | ||
2785 | config_group_init_type_name(&hba->hba_group, name, | |
2786 | &target_core_hba_cit); | |
2787 | ||
2788 | return &hba->hba_group; | |
2789 | } | |
2790 | ||
2791 | static void target_core_call_delhbafromtarget( | |
2792 | struct config_group *group, | |
2793 | struct config_item *item) | |
2794 | { | |
1f6fe7cb NB |
2795 | /* |
2796 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
2797 | * -> target_core_hba_release() | |
2798 | */ | |
c66ac9db | 2799 | config_item_put(item); |
c66ac9db NB |
2800 | } |
2801 | ||
2802 | static struct configfs_group_operations target_core_group_ops = { | |
2803 | .make_group = target_core_call_addhbatotarget, | |
2804 | .drop_item = target_core_call_delhbafromtarget, | |
2805 | }; | |
2806 | ||
2807 | static struct config_item_type target_core_cit = { | |
2808 | .ct_item_ops = NULL, | |
2809 | .ct_group_ops = &target_core_group_ops, | |
2810 | .ct_attrs = NULL, | |
2811 | .ct_owner = THIS_MODULE, | |
2812 | }; | |
2813 | ||
2814 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
2815 | ||
0a06d430 | 2816 | void target_setup_backend_cits(struct target_backend *tb) |
73112edc | 2817 | { |
0a06d430 CH |
2818 | target_core_setup_dev_cit(tb); |
2819 | target_core_setup_dev_attrib_cit(tb); | |
2820 | target_core_setup_dev_pr_cit(tb); | |
2821 | target_core_setup_dev_wwn_cit(tb); | |
2822 | target_core_setup_dev_alua_tg_pt_gps_cit(tb); | |
2823 | target_core_setup_dev_stat_cit(tb); | |
73112edc | 2824 | } |
73112edc | 2825 | |
54550fab | 2826 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
2827 | { |
2828 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
2829 | struct config_group *lu_gp_cg = NULL; | |
d588cf8f | 2830 | struct configfs_subsystem *subsys = &target_core_fabrics; |
c66ac9db NB |
2831 | struct t10_alua_lu_gp *lu_gp; |
2832 | int ret; | |
2833 | ||
6708bb27 | 2834 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
2835 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
2836 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
2837 | ||
c66ac9db NB |
2838 | config_group_init(&subsys->su_group); |
2839 | mutex_init(&subsys->su_mutex); | |
2840 | ||
e3d6f909 | 2841 | ret = init_se_kmem_caches(); |
c66ac9db | 2842 | if (ret < 0) |
e3d6f909 | 2843 | return ret; |
c66ac9db NB |
2844 | /* |
2845 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
2846 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
2847 | */ | |
2848 | target_cg = &subsys->su_group; | |
ab6dae82 | 2849 | target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2850 | GFP_KERNEL); |
6708bb27 AG |
2851 | if (!target_cg->default_groups) { |
2852 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 2853 | ret = -ENOMEM; |
c66ac9db NB |
2854 | goto out_global; |
2855 | } | |
2856 | ||
e3d6f909 | 2857 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 2858 | "core", &target_core_cit); |
e3d6f909 | 2859 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
2860 | target_cg->default_groups[1] = NULL; |
2861 | /* | |
2862 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
2863 | */ | |
e3d6f909 | 2864 | hba_cg = &target_core_hbagroup; |
13f6a914 | 2865 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2866 | GFP_KERNEL); |
6708bb27 AG |
2867 | if (!hba_cg->default_groups) { |
2868 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 2869 | ret = -ENOMEM; |
c66ac9db NB |
2870 | goto out_global; |
2871 | } | |
e3d6f909 | 2872 | config_group_init_type_name(&alua_group, |
c66ac9db | 2873 | "alua", &target_core_alua_cit); |
e3d6f909 | 2874 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
2875 | hba_cg->default_groups[1] = NULL; |
2876 | /* | |
2877 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
2878 | * groups under /sys/kernel/config/target/core/alua/ | |
2879 | */ | |
e3d6f909 | 2880 | alua_cg = &alua_group; |
13f6a914 | 2881 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2882 | GFP_KERNEL); |
6708bb27 AG |
2883 | if (!alua_cg->default_groups) { |
2884 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 2885 | ret = -ENOMEM; |
c66ac9db NB |
2886 | goto out_global; |
2887 | } | |
2888 | ||
e3d6f909 | 2889 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 2890 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 2891 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
2892 | alua_cg->default_groups[1] = NULL; |
2893 | /* | |
2894 | * Add core/alua/lu_gps/default_lu_gp | |
2895 | */ | |
2896 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
2897 | if (IS_ERR(lu_gp)) { |
2898 | ret = -ENOMEM; | |
c66ac9db | 2899 | goto out_global; |
37bb7899 | 2900 | } |
c66ac9db | 2901 | |
e3d6f909 | 2902 | lu_gp_cg = &alua_lu_gps_group; |
13f6a914 | 2903 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2904 | GFP_KERNEL); |
6708bb27 AG |
2905 | if (!lu_gp_cg->default_groups) { |
2906 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 2907 | ret = -ENOMEM; |
c66ac9db NB |
2908 | goto out_global; |
2909 | } | |
2910 | ||
2911 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
2912 | &target_core_alua_lu_gp_cit); | |
2913 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
2914 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2915 | default_lu_gp = lu_gp; |
c66ac9db NB |
2916 | /* |
2917 | * Register the target_core_mod subsystem with configfs. | |
2918 | */ | |
2919 | ret = configfs_register_subsystem(subsys); | |
2920 | if (ret < 0) { | |
6708bb27 | 2921 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
2922 | ret, subsys->su_group.cg_item.ci_namebuf); |
2923 | goto out_global; | |
2924 | } | |
6708bb27 | 2925 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
2926 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
2927 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
2928 | /* | |
2929 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
2930 | */ | |
2931 | ret = rd_module_init(); | |
2932 | if (ret < 0) | |
2933 | goto out; | |
2934 | ||
0d0f9dfb RD |
2935 | ret = core_dev_setup_virtual_lun0(); |
2936 | if (ret < 0) | |
c66ac9db NB |
2937 | goto out; |
2938 | ||
f99715ac NB |
2939 | ret = target_xcopy_setup_pt(); |
2940 | if (ret < 0) | |
2941 | goto out; | |
2942 | ||
c66ac9db NB |
2943 | return 0; |
2944 | ||
2945 | out: | |
2946 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
2947 | core_dev_release_virtual_lun0(); |
2948 | rd_module_exit(); | |
2949 | out_global: | |
e3d6f909 AG |
2950 | if (default_lu_gp) { |
2951 | core_alua_free_lu_gp(default_lu_gp); | |
2952 | default_lu_gp = NULL; | |
c66ac9db NB |
2953 | } |
2954 | if (lu_gp_cg) | |
2955 | kfree(lu_gp_cg->default_groups); | |
2956 | if (alua_cg) | |
2957 | kfree(alua_cg->default_groups); | |
2958 | if (hba_cg) | |
2959 | kfree(hba_cg->default_groups); | |
2960 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
2961 | release_se_kmem_caches(); |
2962 | return ret; | |
c66ac9db NB |
2963 | } |
2964 | ||
54550fab | 2965 | static void __exit target_core_exit_configfs(void) |
c66ac9db | 2966 | { |
c66ac9db NB |
2967 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; |
2968 | struct config_item *item; | |
2969 | int i; | |
2970 | ||
e3d6f909 | 2971 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
2972 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
2973 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
2974 | lu_gp_cg->default_groups[i] = NULL; | |
2975 | config_item_put(item); | |
2976 | } | |
2977 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 2978 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 2979 | |
e3d6f909 | 2980 | alua_cg = &alua_group; |
c66ac9db NB |
2981 | for (i = 0; alua_cg->default_groups[i]; i++) { |
2982 | item = &alua_cg->default_groups[i]->cg_item; | |
2983 | alua_cg->default_groups[i] = NULL; | |
2984 | config_item_put(item); | |
2985 | } | |
2986 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 2987 | alua_cg->default_groups = NULL; |
c66ac9db | 2988 | |
e3d6f909 | 2989 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
2990 | for (i = 0; hba_cg->default_groups[i]; i++) { |
2991 | item = &hba_cg->default_groups[i]->cg_item; | |
2992 | hba_cg->default_groups[i] = NULL; | |
2993 | config_item_put(item); | |
2994 | } | |
2995 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
2996 | hba_cg->default_groups = NULL; |
2997 | /* | |
2998 | * We expect subsys->su_group.default_groups to be released | |
2999 | * by configfs subsystem provider logic.. | |
3000 | */ | |
d588cf8f CH |
3001 | configfs_unregister_subsystem(&target_core_fabrics); |
3002 | kfree(target_core_fabrics.su_group.default_groups); | |
c66ac9db | 3003 | |
e3d6f909 AG |
3004 | core_alua_free_lu_gp(default_lu_gp); |
3005 | default_lu_gp = NULL; | |
7c2bf6e9 | 3006 | |
6708bb27 | 3007 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3008 | " Infrastructure\n"); |
3009 | ||
c66ac9db NB |
3010 | core_dev_release_virtual_lun0(); |
3011 | rd_module_exit(); | |
f99715ac | 3012 | target_xcopy_release_pt(); |
e3d6f909 | 3013 | release_se_kmem_caches(); |
c66ac9db NB |
3014 | } |
3015 | ||
3016 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3017 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3018 | MODULE_LICENSE("GPL"); | |
3019 | ||
3020 | module_init(target_core_init_configfs); | |
3021 | module_exit(target_core_exit_configfs); |