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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_configfs.c | |
3 | * | |
4 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
5 | * | |
4c76251e | 6 | * (c) Copyright 2008-2013 Datera, Inc. |
c66ac9db NB |
7 | * |
8 | * Nicholas A. Bellinger <nab@kernel.org> | |
9 | * | |
10 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | ****************************************************************************/ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
c66ac9db NB |
25 | #include <generated/utsrelease.h> |
26 | #include <linux/utsname.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/fs.h> | |
29 | #include <linux/namei.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/unistd.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/parser.h> | |
36 | #include <linux/syscalls.h> | |
37 | #include <linux/configfs.h> | |
e3d6f909 | 38 | #include <linux/spinlock.h> |
c66ac9db NB |
39 | |
40 | #include <target/target_core_base.h> | |
c4795fb2 CH |
41 | #include <target/target_core_backend.h> |
42 | #include <target/target_core_fabric.h> | |
c66ac9db | 43 | #include <target/target_core_fabric_configfs.h> |
c66ac9db NB |
44 | #include <target/configfs_macros.h> |
45 | ||
e26d99ae | 46 | #include "target_core_internal.h" |
c66ac9db | 47 | #include "target_core_alua.h" |
c66ac9db NB |
48 | #include "target_core_pr.h" |
49 | #include "target_core_rd.h" | |
f99715ac | 50 | #include "target_core_xcopy.h" |
c66ac9db | 51 | |
73112edc | 52 | #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ |
0a06d430 | 53 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ |
73112edc | 54 | { \ |
0a06d430 | 55 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ |
73112edc NB |
56 | \ |
57 | cit->ct_item_ops = _item_ops; \ | |
58 | cit->ct_group_ops = _group_ops; \ | |
59 | cit->ct_attrs = _attrs; \ | |
0a06d430 CH |
60 | cit->ct_owner = tb->ops->owner; \ |
61 | pr_debug("Setup generic %s\n", __stringify(_name)); \ | |
62 | } | |
63 | ||
64 | #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ | |
65 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ | |
66 | { \ | |
67 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ | |
68 | \ | |
69 | cit->ct_item_ops = _item_ops; \ | |
70 | cit->ct_group_ops = _group_ops; \ | |
71 | cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ | |
72 | cit->ct_owner = tb->ops->owner; \ | |
73112edc NB |
73 | pr_debug("Setup generic %s\n", __stringify(_name)); \ |
74 | } | |
75 | ||
e3d6f909 AG |
76 | extern struct t10_alua_lu_gp *default_lu_gp; |
77 | ||
d0f474e5 RD |
78 | static LIST_HEAD(g_tf_list); |
79 | static DEFINE_MUTEX(g_tf_lock); | |
c66ac9db NB |
80 | |
81 | struct target_core_configfs_attribute { | |
82 | struct configfs_attribute attr; | |
83 | ssize_t (*show)(void *, char *); | |
84 | ssize_t (*store)(void *, const char *, size_t); | |
85 | }; | |
86 | ||
e3d6f909 AG |
87 | static struct config_group target_core_hbagroup; |
88 | static struct config_group alua_group; | |
89 | static struct config_group alua_lu_gps_group; | |
90 | ||
c66ac9db NB |
91 | static inline struct se_hba * |
92 | item_to_hba(struct config_item *item) | |
93 | { | |
94 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
95 | } | |
96 | ||
97 | /* | |
98 | * Attributes for /sys/kernel/config/target/ | |
99 | */ | |
100 | static ssize_t target_core_attr_show(struct config_item *item, | |
101 | struct configfs_attribute *attr, | |
102 | char *page) | |
103 | { | |
104 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
ce8dd25d | 105 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION, |
c66ac9db NB |
106 | utsname()->sysname, utsname()->machine); |
107 | } | |
108 | ||
109 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
110 | .show_attribute = target_core_attr_show, | |
111 | }; | |
112 | ||
113 | static struct configfs_attribute target_core_item_attr_version = { | |
114 | .ca_owner = THIS_MODULE, | |
115 | .ca_name = "version", | |
116 | .ca_mode = S_IRUGO, | |
117 | }; | |
118 | ||
119 | static struct target_fabric_configfs *target_core_get_fabric( | |
120 | const char *name) | |
121 | { | |
122 | struct target_fabric_configfs *tf; | |
123 | ||
6708bb27 | 124 | if (!name) |
c66ac9db NB |
125 | return NULL; |
126 | ||
127 | mutex_lock(&g_tf_lock); | |
128 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
0dc2e8d1 | 129 | if (!strcmp(tf->tf_ops->name, name)) { |
c66ac9db NB |
130 | atomic_inc(&tf->tf_access_cnt); |
131 | mutex_unlock(&g_tf_lock); | |
132 | return tf; | |
133 | } | |
134 | } | |
135 | mutex_unlock(&g_tf_lock); | |
136 | ||
137 | return NULL; | |
138 | } | |
139 | ||
140 | /* | |
141 | * Called from struct target_core_group_ops->make_group() | |
142 | */ | |
143 | static struct config_group *target_core_register_fabric( | |
144 | struct config_group *group, | |
145 | const char *name) | |
146 | { | |
147 | struct target_fabric_configfs *tf; | |
148 | int ret; | |
149 | ||
6708bb27 | 150 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 151 | " %s\n", group, name); |
e7b7af6e RD |
152 | |
153 | tf = target_core_get_fabric(name); | |
154 | if (!tf) { | |
62554910 NB |
155 | pr_debug("target_core_register_fabric() trying autoload for %s\n", |
156 | name); | |
e7b7af6e | 157 | |
c66ac9db | 158 | /* |
e7b7af6e RD |
159 | * Below are some hardcoded request_module() calls to automatically |
160 | * local fabric modules when the following is called: | |
c66ac9db | 161 | * |
e7b7af6e | 162 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 163 | * |
e7b7af6e RD |
164 | * Note that this does not limit which TCM fabric module can be |
165 | * registered, but simply provids auto loading logic for modules with | |
166 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 167 | */ |
e7b7af6e RD |
168 | |
169 | if (!strncmp(name, "iscsi", 5)) { | |
170 | /* | |
171 | * Automatically load the LIO Target fabric module when the | |
172 | * following is called: | |
173 | * | |
174 | * mkdir -p $CONFIGFS/target/iscsi | |
175 | */ | |
176 | ret = request_module("iscsi_target_mod"); | |
177 | if (ret < 0) { | |
62554910 NB |
178 | pr_debug("request_module() failed for" |
179 | " iscsi_target_mod.ko: %d\n", ret); | |
e7b7af6e RD |
180 | return ERR_PTR(-EINVAL); |
181 | } | |
182 | } else if (!strncmp(name, "loopback", 8)) { | |
183 | /* | |
184 | * Automatically load the tcm_loop fabric module when the | |
185 | * following is called: | |
186 | * | |
187 | * mkdir -p $CONFIGFS/target/loopback | |
188 | */ | |
189 | ret = request_module("tcm_loop"); | |
190 | if (ret < 0) { | |
62554910 NB |
191 | pr_debug("request_module() failed for" |
192 | " tcm_loop.ko: %d\n", ret); | |
e7b7af6e RD |
193 | return ERR_PTR(-EINVAL); |
194 | } | |
c66ac9db | 195 | } |
e7b7af6e RD |
196 | |
197 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
198 | } |
199 | ||
6708bb27 | 200 | if (!tf) { |
62554910 NB |
201 | pr_debug("target_core_get_fabric() failed for %s\n", |
202 | name); | |
c66ac9db NB |
203 | return ERR_PTR(-EINVAL); |
204 | } | |
6708bb27 | 205 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
0dc2e8d1 | 206 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
207 | /* |
208 | * On a successful target_core_get_fabric() look, the returned | |
209 | * struct target_fabric_configfs *tf will contain a usage reference. | |
210 | */ | |
6708bb27 | 211 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
968ebe75 | 212 | &tf->tf_wwn_cit); |
c66ac9db NB |
213 | |
214 | tf->tf_group.default_groups = tf->tf_default_groups; | |
215 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
216 | tf->tf_group.default_groups[1] = NULL; | |
217 | ||
968ebe75 | 218 | config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); |
c66ac9db | 219 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
968ebe75 | 220 | &tf->tf_discovery_cit); |
c66ac9db | 221 | |
6708bb27 | 222 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db | 223 | " %s\n", tf->tf_group.cg_item.ci_name); |
c66ac9db NB |
224 | return &tf->tf_group; |
225 | } | |
226 | ||
227 | /* | |
228 | * Called from struct target_core_group_ops->drop_item() | |
229 | */ | |
230 | static void target_core_deregister_fabric( | |
231 | struct config_group *group, | |
232 | struct config_item *item) | |
233 | { | |
234 | struct target_fabric_configfs *tf = container_of( | |
235 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
236 | struct config_group *tf_group; | |
237 | struct config_item *df_item; | |
238 | int i; | |
239 | ||
6708bb27 | 240 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
241 | " tf list\n", config_item_name(item)); |
242 | ||
6708bb27 | 243 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
0dc2e8d1 | 244 | " %s\n", tf->tf_ops->name); |
c66ac9db NB |
245 | atomic_dec(&tf->tf_access_cnt); |
246 | ||
6708bb27 | 247 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
248 | " %s\n", config_item_name(item)); |
249 | ||
250 | tf_group = &tf->tf_group; | |
251 | for (i = 0; tf_group->default_groups[i]; i++) { | |
252 | df_item = &tf_group->default_groups[i]->cg_item; | |
253 | tf_group->default_groups[i] = NULL; | |
254 | config_item_put(df_item); | |
255 | } | |
256 | config_item_put(item); | |
257 | } | |
258 | ||
259 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
260 | .make_group = &target_core_register_fabric, | |
261 | .drop_item = &target_core_deregister_fabric, | |
262 | }; | |
263 | ||
264 | /* | |
265 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
266 | */ | |
267 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
268 | &target_core_item_attr_version, | |
269 | NULL, | |
270 | }; | |
271 | ||
272 | /* | |
273 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
274 | */ | |
275 | static struct config_item_type target_core_fabrics_item = { | |
276 | .ct_item_ops = &target_core_fabric_item_ops, | |
277 | .ct_group_ops = &target_core_fabric_group_ops, | |
278 | .ct_attrs = target_core_fabric_item_attrs, | |
279 | .ct_owner = THIS_MODULE, | |
280 | }; | |
281 | ||
282 | static struct configfs_subsystem target_core_fabrics = { | |
283 | .su_group = { | |
284 | .cg_item = { | |
285 | .ci_namebuf = "target", | |
286 | .ci_type = &target_core_fabrics_item, | |
287 | }, | |
288 | }, | |
289 | }; | |
290 | ||
d588cf8f CH |
291 | int target_depend_item(struct config_item *item) |
292 | { | |
293 | return configfs_depend_item(&target_core_fabrics, item); | |
294 | } | |
295 | EXPORT_SYMBOL(target_depend_item); | |
296 | ||
297 | void target_undepend_item(struct config_item *item) | |
298 | { | |
299 | return configfs_undepend_item(&target_core_fabrics, item); | |
300 | } | |
301 | EXPORT_SYMBOL(target_undepend_item); | |
c66ac9db NB |
302 | |
303 | /*############################################################################## | |
304 | // Start functions called by external Target Fabrics Modules | |
305 | //############################################################################*/ | |
306 | ||
9ac8928e | 307 | static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) |
c66ac9db | 308 | { |
9ac8928e CH |
309 | if (!tfo->name) { |
310 | pr_err("Missing tfo->name\n"); | |
311 | return -EINVAL; | |
c66ac9db | 312 | } |
9ac8928e | 313 | if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 314 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
9ac8928e CH |
315 | "_NAME_SIZE\n", tfo->name); |
316 | return -EINVAL; | |
c66ac9db | 317 | } |
6708bb27 AG |
318 | if (!tfo->get_fabric_name) { |
319 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
320 | return -EINVAL; |
321 | } | |
6708bb27 AG |
322 | if (!tfo->tpg_get_wwn) { |
323 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
324 | return -EINVAL; |
325 | } | |
6708bb27 AG |
326 | if (!tfo->tpg_get_tag) { |
327 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
328 | return -EINVAL; |
329 | } | |
6708bb27 AG |
330 | if (!tfo->tpg_check_demo_mode) { |
331 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
332 | return -EINVAL; |
333 | } | |
6708bb27 AG |
334 | if (!tfo->tpg_check_demo_mode_cache) { |
335 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
336 | return -EINVAL; |
337 | } | |
6708bb27 AG |
338 | if (!tfo->tpg_check_demo_mode_write_protect) { |
339 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
340 | return -EINVAL; |
341 | } | |
6708bb27 AG |
342 | if (!tfo->tpg_check_prod_mode_write_protect) { |
343 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
344 | return -EINVAL; |
345 | } | |
6708bb27 AG |
346 | if (!tfo->tpg_get_inst_index) { |
347 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
348 | return -EINVAL; |
349 | } | |
35462975 | 350 | if (!tfo->release_cmd) { |
6708bb27 | 351 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
352 | return -EINVAL; |
353 | } | |
6708bb27 AG |
354 | if (!tfo->shutdown_session) { |
355 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
356 | return -EINVAL; |
357 | } | |
6708bb27 AG |
358 | if (!tfo->close_session) { |
359 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
360 | return -EINVAL; |
361 | } | |
6708bb27 AG |
362 | if (!tfo->sess_get_index) { |
363 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
364 | return -EINVAL; |
365 | } | |
6708bb27 AG |
366 | if (!tfo->write_pending) { |
367 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
368 | return -EINVAL; |
369 | } | |
6708bb27 AG |
370 | if (!tfo->write_pending_status) { |
371 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
372 | return -EINVAL; |
373 | } | |
6708bb27 AG |
374 | if (!tfo->set_default_node_attributes) { |
375 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
376 | return -EINVAL; |
377 | } | |
6708bb27 AG |
378 | if (!tfo->get_cmd_state) { |
379 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
380 | return -EINVAL; |
381 | } | |
6708bb27 AG |
382 | if (!tfo->queue_data_in) { |
383 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
384 | return -EINVAL; |
385 | } | |
6708bb27 AG |
386 | if (!tfo->queue_status) { |
387 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
388 | return -EINVAL; |
389 | } | |
6708bb27 AG |
390 | if (!tfo->queue_tm_rsp) { |
391 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
392 | return -EINVAL; |
393 | } | |
131e6abc NB |
394 | if (!tfo->aborted_task) { |
395 | pr_err("Missing tfo->aborted_task()\n"); | |
396 | return -EINVAL; | |
397 | } | |
c66ac9db NB |
398 | /* |
399 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
400 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
401 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
402 | */ | |
6708bb27 AG |
403 | if (!tfo->fabric_make_wwn) { |
404 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
405 | return -EINVAL; |
406 | } | |
6708bb27 AG |
407 | if (!tfo->fabric_drop_wwn) { |
408 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
409 | return -EINVAL; |
410 | } | |
6708bb27 AG |
411 | if (!tfo->fabric_make_tpg) { |
412 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
413 | return -EINVAL; |
414 | } | |
6708bb27 AG |
415 | if (!tfo->fabric_drop_tpg) { |
416 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
417 | return -EINVAL; |
418 | } | |
419 | ||
420 | return 0; | |
421 | } | |
422 | ||
9ac8928e | 423 | int target_register_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 424 | { |
9ac8928e | 425 | struct target_fabric_configfs *tf; |
c66ac9db NB |
426 | int ret; |
427 | ||
9ac8928e CH |
428 | ret = target_fabric_tf_ops_check(fo); |
429 | if (ret) | |
430 | return ret; | |
431 | ||
432 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 433 | if (!tf) { |
9ac8928e CH |
434 | pr_err("%s: could not allocate memory!\n", __func__); |
435 | return -ENOMEM; | |
c66ac9db | 436 | } |
c66ac9db | 437 | |
9ac8928e CH |
438 | INIT_LIST_HEAD(&tf->tf_list); |
439 | atomic_set(&tf->tf_access_cnt, 0); | |
ef0caf8d | 440 | tf->tf_ops = fo; |
9ac8928e CH |
441 | target_fabric_setup_cits(tf); |
442 | ||
443 | mutex_lock(&g_tf_lock); | |
444 | list_add_tail(&tf->tf_list, &g_tf_list); | |
445 | mutex_unlock(&g_tf_lock); | |
446 | ||
c66ac9db NB |
447 | return 0; |
448 | } | |
9ac8928e | 449 | EXPORT_SYMBOL(target_register_template); |
c66ac9db | 450 | |
9ac8928e | 451 | void target_unregister_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 452 | { |
9ac8928e | 453 | struct target_fabric_configfs *t; |
c66ac9db | 454 | |
c66ac9db | 455 | mutex_lock(&g_tf_lock); |
9ac8928e | 456 | list_for_each_entry(t, &g_tf_list, tf_list) { |
0dc2e8d1 | 457 | if (!strcmp(t->tf_ops->name, fo->name)) { |
9ac8928e CH |
458 | BUG_ON(atomic_read(&t->tf_access_cnt)); |
459 | list_del(&t->tf_list); | |
94509182 NB |
460 | mutex_unlock(&g_tf_lock); |
461 | /* | |
462 | * Wait for any outstanding fabric se_deve_entry->rcu_head | |
463 | * callbacks to complete post kfree_rcu(), before allowing | |
464 | * fabric driver unload of TFO->module to proceed. | |
465 | */ | |
466 | rcu_barrier(); | |
9ac8928e | 467 | kfree(t); |
94509182 | 468 | return; |
9ac8928e | 469 | } |
c66ac9db | 470 | } |
c66ac9db | 471 | mutex_unlock(&g_tf_lock); |
c66ac9db | 472 | } |
9ac8928e | 473 | EXPORT_SYMBOL(target_unregister_template); |
c66ac9db NB |
474 | |
475 | /*############################################################################## | |
476 | // Stop functions called by external Target Fabrics Modules | |
477 | //############################################################################*/ | |
478 | ||
f79a897e | 479 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
3effdb90 CH |
480 | #define DEF_TB_DEV_ATTRIB_SHOW(_name) \ |
481 | static ssize_t show_##_name(struct se_dev_attrib *da, char *page) \ | |
5873c4d1 | 482 | { \ |
3effdb90 | 483 | return snprintf(page, PAGE_SIZE, "%u\n", da->_name); \ |
5873c4d1 CH |
484 | } |
485 | ||
3effdb90 CH |
486 | DEF_TB_DEV_ATTRIB_SHOW(emulate_model_alias); |
487 | DEF_TB_DEV_ATTRIB_SHOW(emulate_dpo); | |
488 | DEF_TB_DEV_ATTRIB_SHOW(emulate_fua_write); | |
489 | DEF_TB_DEV_ATTRIB_SHOW(emulate_fua_read); | |
490 | DEF_TB_DEV_ATTRIB_SHOW(emulate_write_cache); | |
491 | DEF_TB_DEV_ATTRIB_SHOW(emulate_ua_intlck_ctrl); | |
492 | DEF_TB_DEV_ATTRIB_SHOW(emulate_tas); | |
493 | DEF_TB_DEV_ATTRIB_SHOW(emulate_tpu); | |
494 | DEF_TB_DEV_ATTRIB_SHOW(emulate_tpws); | |
495 | DEF_TB_DEV_ATTRIB_SHOW(emulate_caw); | |
496 | DEF_TB_DEV_ATTRIB_SHOW(emulate_3pc); | |
497 | DEF_TB_DEV_ATTRIB_SHOW(pi_prot_type); | |
498 | DEF_TB_DEV_ATTRIB_SHOW(hw_pi_prot_type); | |
499 | DEF_TB_DEV_ATTRIB_SHOW(pi_prot_format); | |
500 | DEF_TB_DEV_ATTRIB_SHOW(enforce_pr_isids); | |
501 | DEF_TB_DEV_ATTRIB_SHOW(is_nonrot); | |
502 | DEF_TB_DEV_ATTRIB_SHOW(emulate_rest_reord); | |
503 | DEF_TB_DEV_ATTRIB_SHOW(force_pr_aptpl); | |
504 | DEF_TB_DEV_ATTRIB_SHOW(hw_block_size); | |
505 | DEF_TB_DEV_ATTRIB_SHOW(block_size); | |
506 | DEF_TB_DEV_ATTRIB_SHOW(hw_max_sectors); | |
507 | DEF_TB_DEV_ATTRIB_SHOW(optimal_sectors); | |
508 | DEF_TB_DEV_ATTRIB_SHOW(hw_queue_depth); | |
509 | DEF_TB_DEV_ATTRIB_SHOW(queue_depth); | |
510 | DEF_TB_DEV_ATTRIB_SHOW(max_unmap_lba_count); | |
511 | DEF_TB_DEV_ATTRIB_SHOW(max_unmap_block_desc_count); | |
512 | DEF_TB_DEV_ATTRIB_SHOW(unmap_granularity); | |
513 | DEF_TB_DEV_ATTRIB_SHOW(unmap_granularity_alignment); | |
514 | DEF_TB_DEV_ATTRIB_SHOW(max_write_same_len); | |
515 | ||
516 | #define DEF_TB_DEV_ATTRIB_STORE_U32(_name) \ | |
517 | static ssize_t store_##_name(struct se_dev_attrib *da, const char *page,\ | |
518 | size_t count) \ | |
5873c4d1 | 519 | { \ |
3effdb90 | 520 | u32 val; \ |
5873c4d1 CH |
521 | int ret; \ |
522 | \ | |
3effdb90 CH |
523 | ret = kstrtou32(page, 0, &val); \ |
524 | if (ret < 0) \ | |
525 | return ret; \ | |
526 | da->_name = val; \ | |
527 | return count; \ | |
528 | } | |
529 | ||
530 | DEF_TB_DEV_ATTRIB_STORE_U32(max_unmap_lba_count); | |
531 | DEF_TB_DEV_ATTRIB_STORE_U32(max_unmap_block_desc_count); | |
532 | DEF_TB_DEV_ATTRIB_STORE_U32(unmap_granularity); | |
533 | DEF_TB_DEV_ATTRIB_STORE_U32(unmap_granularity_alignment); | |
534 | DEF_TB_DEV_ATTRIB_STORE_U32(max_write_same_len); | |
535 | ||
536 | #define DEF_TB_DEV_ATTRIB_STORE_BOOL(_name) \ | |
537 | static ssize_t store_##_name(struct se_dev_attrib *da, const char *page,\ | |
538 | size_t count) \ | |
539 | { \ | |
540 | bool flag; \ | |
541 | int ret; \ | |
5873c4d1 | 542 | \ |
3effdb90 CH |
543 | ret = strtobool(page, &flag); \ |
544 | if (ret < 0) \ | |
545 | return ret; \ | |
546 | da->_name = flag; \ | |
547 | return count; \ | |
548 | } | |
549 | ||
550 | DEF_TB_DEV_ATTRIB_STORE_BOOL(emulate_fua_write); | |
551 | DEF_TB_DEV_ATTRIB_STORE_BOOL(emulate_caw); | |
552 | DEF_TB_DEV_ATTRIB_STORE_BOOL(emulate_3pc); | |
553 | DEF_TB_DEV_ATTRIB_STORE_BOOL(enforce_pr_isids); | |
554 | DEF_TB_DEV_ATTRIB_STORE_BOOL(is_nonrot); | |
555 | ||
556 | #define DEF_TB_DEV_ATTRIB_STORE_STUB(_name) \ | |
557 | static ssize_t store_##_name(struct se_dev_attrib *da, const char *page,\ | |
558 | size_t count) \ | |
559 | { \ | |
560 | printk_once(KERN_WARNING \ | |
561 | "ignoring deprecated ##_name## attribute\n"); \ | |
562 | return count; \ | |
563 | } | |
564 | ||
565 | DEF_TB_DEV_ATTRIB_STORE_STUB(emulate_dpo); | |
566 | DEF_TB_DEV_ATTRIB_STORE_STUB(emulate_fua_read); | |
567 | ||
568 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) | |
569 | { | |
570 | const char *configname; | |
571 | ||
572 | configname = config_item_name(&dev->dev_group.cg_item); | |
573 | if (strlen(configname) >= 16) { | |
574 | pr_warn("dev[%p]: Backstore name '%s' is too long for " | |
575 | "INQUIRY_MODEL, truncating to 16 bytes\n", dev, | |
576 | configname); | |
577 | } | |
578 | snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); | |
579 | } | |
580 | ||
581 | static ssize_t store_emulate_model_alias(struct se_dev_attrib *da, | |
582 | const char *page, size_t count) | |
583 | { | |
584 | struct se_device *dev = da->da_dev; | |
585 | bool flag; | |
586 | int ret; | |
587 | ||
588 | if (dev->export_count) { | |
589 | pr_err("dev[%p]: Unable to change model alias" | |
590 | " while export_count is %d\n", | |
591 | dev, dev->export_count); | |
592 | return -EINVAL; | |
593 | } | |
594 | ||
595 | ret = strtobool(page, &flag); | |
596 | if (ret < 0) | |
597 | return ret; | |
598 | ||
599 | if (flag) { | |
600 | dev_set_t10_wwn_model_alias(dev); | |
601 | } else { | |
602 | strncpy(&dev->t10_wwn.model[0], | |
603 | dev->transport->inquiry_prod, 16); | |
604 | } | |
605 | da->emulate_model_alias = flag; | |
606 | return count; | |
607 | } | |
608 | ||
609 | static ssize_t store_emulate_write_cache(struct se_dev_attrib *da, | |
610 | const char *page, size_t count) | |
611 | { | |
612 | bool flag; | |
613 | int ret; | |
614 | ||
615 | ret = strtobool(page, &flag); | |
616 | if (ret < 0) | |
617 | return ret; | |
618 | ||
619 | if (flag && da->da_dev->transport->get_write_cache) { | |
620 | pr_err("emulate_write_cache not supported for this device\n"); | |
621 | return -EINVAL; | |
622 | } | |
623 | ||
624 | da->emulate_write_cache = flag; | |
625 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", | |
626 | da->da_dev, flag); | |
627 | return count; | |
628 | } | |
629 | ||
630 | static ssize_t store_emulate_ua_intlck_ctrl(struct se_dev_attrib *da, | |
631 | const char *page, size_t count) | |
632 | { | |
633 | u32 val; | |
634 | int ret; | |
635 | ||
636 | ret = kstrtou32(page, 0, &val); | |
637 | if (ret < 0) | |
638 | return ret; | |
639 | ||
640 | if (val != 0 && val != 1 && val != 2) { | |
641 | pr_err("Illegal value %d\n", val); | |
642 | return -EINVAL; | |
643 | } | |
644 | ||
645 | if (da->da_dev->export_count) { | |
646 | pr_err("dev[%p]: Unable to change SE Device" | |
647 | " UA_INTRLCK_CTRL while export_count is %d\n", | |
648 | da->da_dev, da->da_dev->export_count); | |
649 | return -EINVAL; | |
650 | } | |
651 | da->emulate_ua_intlck_ctrl = val; | |
652 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", | |
653 | da->da_dev, val); | |
654 | return count; | |
655 | } | |
656 | ||
657 | static ssize_t store_emulate_tas(struct se_dev_attrib *da, | |
658 | const char *page, size_t count) | |
659 | { | |
660 | bool flag; | |
661 | int ret; | |
662 | ||
663 | ret = strtobool(page, &flag); | |
664 | if (ret < 0) | |
665 | return ret; | |
666 | ||
667 | if (da->da_dev->export_count) { | |
668 | pr_err("dev[%p]: Unable to change SE Device TAS while" | |
669 | " export_count is %d\n", | |
670 | da->da_dev, da->da_dev->export_count); | |
671 | return -EINVAL; | |
672 | } | |
673 | da->emulate_tas = flag; | |
674 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", | |
675 | da->da_dev, flag ? "Enabled" : "Disabled"); | |
676 | ||
677 | return count; | |
678 | } | |
679 | ||
680 | static ssize_t store_emulate_tpu(struct se_dev_attrib *da, | |
681 | const char *page, size_t count) | |
682 | { | |
683 | bool flag; | |
684 | int ret; | |
685 | ||
686 | ret = strtobool(page, &flag); | |
687 | if (ret < 0) | |
688 | return ret; | |
689 | ||
690 | /* | |
691 | * We expect this value to be non-zero when generic Block Layer | |
692 | * Discard supported is detected iblock_create_virtdevice(). | |
693 | */ | |
694 | if (flag && !da->max_unmap_block_desc_count) { | |
695 | pr_err("Generic Block Discard not supported\n"); | |
696 | return -ENOSYS; | |
697 | } | |
698 | ||
699 | da->emulate_tpu = flag; | |
700 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", | |
701 | da->da_dev, flag); | |
702 | return count; | |
703 | } | |
704 | ||
705 | static ssize_t store_emulate_tpws(struct se_dev_attrib *da, | |
706 | const char *page, size_t count) | |
707 | { | |
708 | bool flag; | |
709 | int ret; | |
710 | ||
711 | ret = strtobool(page, &flag); | |
712 | if (ret < 0) | |
713 | return ret; | |
714 | ||
715 | /* | |
716 | * We expect this value to be non-zero when generic Block Layer | |
717 | * Discard supported is detected iblock_create_virtdevice(). | |
718 | */ | |
719 | if (flag && !da->max_unmap_block_desc_count) { | |
720 | pr_err("Generic Block Discard not supported\n"); | |
721 | return -ENOSYS; | |
722 | } | |
723 | ||
724 | da->emulate_tpws = flag; | |
725 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", | |
726 | da->da_dev, flag); | |
727 | return count; | |
728 | } | |
729 | ||
730 | static ssize_t store_pi_prot_type(struct se_dev_attrib *da, | |
731 | const char *page, size_t count) | |
732 | { | |
733 | int old_prot = da->pi_prot_type, ret; | |
734 | struct se_device *dev = da->da_dev; | |
735 | u32 flag; | |
736 | ||
737 | ret = kstrtou32(page, 0, &flag); | |
738 | if (ret < 0) | |
739 | return ret; | |
740 | ||
741 | if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { | |
742 | pr_err("Illegal value %d for pi_prot_type\n", flag); | |
743 | return -EINVAL; | |
744 | } | |
745 | if (flag == 2) { | |
746 | pr_err("DIF TYPE2 protection currently not supported\n"); | |
747 | return -ENOSYS; | |
748 | } | |
749 | if (da->hw_pi_prot_type) { | |
750 | pr_warn("DIF protection enabled on underlying hardware," | |
751 | " ignoring\n"); | |
752 | return count; | |
753 | } | |
754 | if (!dev->transport->init_prot || !dev->transport->free_prot) { | |
755 | /* 0 is only allowed value for non-supporting backends */ | |
756 | if (flag == 0) | |
bc1a7d6a | 757 | return count; |
3effdb90 CH |
758 | |
759 | pr_err("DIF protection not supported by backend: %s\n", | |
760 | dev->transport->name); | |
761 | return -ENOSYS; | |
762 | } | |
763 | if (!(dev->dev_flags & DF_CONFIGURED)) { | |
764 | pr_err("DIF protection requires device to be configured\n"); | |
765 | return -ENODEV; | |
766 | } | |
767 | if (dev->export_count) { | |
768 | pr_err("dev[%p]: Unable to change SE Device PROT type while" | |
769 | " export_count is %d\n", dev, dev->export_count); | |
770 | return -EINVAL; | |
771 | } | |
772 | ||
773 | da->pi_prot_type = flag; | |
774 | ||
775 | if (flag && !old_prot) { | |
776 | ret = dev->transport->init_prot(dev); | |
777 | if (ret) { | |
778 | da->pi_prot_type = old_prot; | |
779 | return ret; | |
780 | } | |
781 | ||
782 | } else if (!flag && old_prot) { | |
783 | dev->transport->free_prot(dev); | |
784 | } | |
785 | ||
786 | pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); | |
787 | return count; | |
788 | } | |
789 | ||
790 | static ssize_t store_pi_prot_format(struct se_dev_attrib *da, | |
791 | const char *page, size_t count) | |
792 | { | |
793 | struct se_device *dev = da->da_dev; | |
794 | bool flag; | |
795 | int ret; | |
796 | ||
797 | ret = strtobool(page, &flag); | |
798 | if (ret < 0) | |
799 | return ret; | |
800 | ||
801 | if (!flag) | |
802 | return count; | |
803 | ||
804 | if (!dev->transport->format_prot) { | |
805 | pr_err("DIF protection format not supported by backend %s\n", | |
806 | dev->transport->name); | |
807 | return -ENOSYS; | |
808 | } | |
809 | if (!(dev->dev_flags & DF_CONFIGURED)) { | |
810 | pr_err("DIF protection format requires device to be configured\n"); | |
811 | return -ENODEV; | |
812 | } | |
813 | if (dev->export_count) { | |
814 | pr_err("dev[%p]: Unable to format SE Device PROT type while" | |
815 | " export_count is %d\n", dev, dev->export_count); | |
816 | return -EINVAL; | |
817 | } | |
818 | ||
819 | ret = dev->transport->format_prot(dev); | |
820 | if (ret) | |
821 | return ret; | |
822 | ||
823 | pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); | |
824 | return count; | |
825 | } | |
826 | ||
827 | static ssize_t store_force_pr_aptpl(struct se_dev_attrib *da, | |
828 | const char *page, size_t count) | |
829 | { | |
830 | bool flag; | |
831 | int ret; | |
832 | ||
833 | ret = strtobool(page, &flag); | |
834 | if (ret < 0) | |
835 | return ret; | |
836 | if (da->da_dev->export_count) { | |
837 | pr_err("dev[%p]: Unable to set force_pr_aptpl while" | |
838 | " export_count is %d\n", | |
839 | da->da_dev, da->da_dev->export_count); | |
840 | return -EINVAL; | |
841 | } | |
842 | ||
843 | da->force_pr_aptpl = flag; | |
844 | pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); | |
845 | return count; | |
846 | } | |
847 | ||
848 | static ssize_t store_emulate_rest_reord(struct se_dev_attrib *da, | |
849 | const char *page, size_t count) | |
850 | { | |
851 | bool flag; | |
852 | int ret; | |
853 | ||
854 | ret = strtobool(page, &flag); | |
855 | if (ret < 0) | |
856 | return ret; | |
857 | ||
858 | if (flag != 0) { | |
859 | printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" | |
860 | " reordering not implemented\n", da->da_dev); | |
861 | return -ENOSYS; | |
862 | } | |
863 | da->emulate_rest_reord = flag; | |
864 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", | |
865 | da->da_dev, flag); | |
866 | return count; | |
867 | } | |
868 | ||
869 | /* | |
870 | * Note, this can only be called on unexported SE Device Object. | |
871 | */ | |
872 | static ssize_t store_queue_depth(struct se_dev_attrib *da, | |
873 | const char *page, size_t count) | |
874 | { | |
875 | struct se_device *dev = da->da_dev; | |
876 | u32 val; | |
877 | int ret; | |
878 | ||
879 | ret = kstrtou32(page, 0, &val); | |
880 | if (ret < 0) | |
881 | return ret; | |
882 | ||
883 | if (dev->export_count) { | |
884 | pr_err("dev[%p]: Unable to change SE Device TCQ while" | |
885 | " export_count is %d\n", | |
886 | dev, dev->export_count); | |
887 | return -EINVAL; | |
888 | } | |
889 | if (!val) { | |
890 | pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); | |
891 | return -EINVAL; | |
892 | } | |
893 | ||
894 | if (val > dev->dev_attrib.queue_depth) { | |
895 | if (val > dev->dev_attrib.hw_queue_depth) { | |
896 | pr_err("dev[%p]: Passed queue_depth:" | |
897 | " %u exceeds TCM/SE_Device MAX" | |
898 | " TCQ: %u\n", dev, val, | |
899 | dev->dev_attrib.hw_queue_depth); | |
900 | return -EINVAL; | |
901 | } | |
902 | } | |
903 | da->queue_depth = dev->queue_depth = val; | |
904 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); | |
905 | return count; | |
906 | } | |
907 | ||
908 | static ssize_t store_optimal_sectors(struct se_dev_attrib *da, | |
909 | const char *page, size_t count) | |
910 | { | |
911 | u32 val; | |
912 | int ret; | |
913 | ||
914 | ret = kstrtou32(page, 0, &val); | |
915 | if (ret < 0) | |
916 | return ret; | |
917 | ||
918 | if (da->da_dev->export_count) { | |
919 | pr_err("dev[%p]: Unable to change SE Device" | |
920 | " optimal_sectors while export_count is %d\n", | |
921 | da->da_dev, da->da_dev->export_count); | |
922 | return -EINVAL; | |
923 | } | |
924 | if (val > da->hw_max_sectors) { | |
925 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" | |
926 | " greater than hw_max_sectors: %u\n", | |
927 | da->da_dev, val, da->hw_max_sectors); | |
928 | return -EINVAL; | |
929 | } | |
930 | ||
931 | da->optimal_sectors = val; | |
932 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", | |
933 | da->da_dev, val); | |
934 | return count; | |
5873c4d1 CH |
935 | } |
936 | ||
3effdb90 CH |
937 | static ssize_t store_block_size(struct se_dev_attrib *da, |
938 | const char *page, size_t count) | |
939 | { | |
940 | u32 val; | |
941 | int ret; | |
942 | ||
943 | ret = kstrtou32(page, 0, &val); | |
944 | if (ret < 0) | |
945 | return ret; | |
5873c4d1 | 946 | |
3effdb90 CH |
947 | if (da->da_dev->export_count) { |
948 | pr_err("dev[%p]: Unable to change SE Device block_size" | |
949 | " while export_count is %d\n", | |
950 | da->da_dev, da->da_dev->export_count); | |
951 | return -EINVAL; | |
952 | } | |
953 | ||
954 | if (val != 512 && val != 1024 && val != 2048 && val != 4096) { | |
955 | pr_err("dev[%p]: Illegal value for block_device: %u" | |
956 | " for SE device, must be 512, 1024, 2048 or 4096\n", | |
957 | da->da_dev, val); | |
958 | return -EINVAL; | |
959 | } | |
960 | ||
961 | da->block_size = val; | |
962 | if (da->max_bytes_per_io) | |
963 | da->hw_max_sectors = da->max_bytes_per_io / val; | |
964 | ||
965 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", | |
966 | da->da_dev, val); | |
967 | return count; | |
968 | } | |
5873c4d1 CH |
969 | |
970 | CONFIGFS_EATTR_STRUCT(target_backend_dev_attrib, se_dev_attrib); | |
971 | #define TB_DEV_ATTR(_backend, _name, _mode) \ | |
972 | static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \ | |
3effdb90 CH |
973 | __CONFIGFS_EATTR(_name, _mode, \ |
974 | show_##_name, \ | |
975 | store_##_name); | |
5873c4d1 | 976 | |
3effdb90 | 977 | #define TB_DEV_ATTR_RO(_backend, _name) \ |
5873c4d1 CH |
978 | static struct target_backend_dev_attrib_attribute _backend##_dev_attrib_##_name = \ |
979 | __CONFIGFS_EATTR_RO(_name, \ | |
3effdb90 | 980 | show_##_name); |
5873c4d1 CH |
981 | |
982 | TB_DEV_ATTR(target_core, emulate_model_alias, S_IRUGO | S_IWUSR); | |
983 | TB_DEV_ATTR(target_core, emulate_dpo, S_IRUGO | S_IWUSR); | |
984 | TB_DEV_ATTR(target_core, emulate_fua_write, S_IRUGO | S_IWUSR); | |
985 | TB_DEV_ATTR(target_core, emulate_fua_read, S_IRUGO | S_IWUSR); | |
986 | TB_DEV_ATTR(target_core, emulate_write_cache, S_IRUGO | S_IWUSR); | |
987 | TB_DEV_ATTR(target_core, emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
988 | TB_DEV_ATTR(target_core, emulate_tas, S_IRUGO | S_IWUSR); | |
989 | TB_DEV_ATTR(target_core, emulate_tpu, S_IRUGO | S_IWUSR); | |
990 | TB_DEV_ATTR(target_core, emulate_tpws, S_IRUGO | S_IWUSR); | |
991 | TB_DEV_ATTR(target_core, emulate_caw, S_IRUGO | S_IWUSR); | |
992 | TB_DEV_ATTR(target_core, emulate_3pc, S_IRUGO | S_IWUSR); | |
993 | TB_DEV_ATTR(target_core, pi_prot_type, S_IRUGO | S_IWUSR); | |
994 | TB_DEV_ATTR_RO(target_core, hw_pi_prot_type); | |
995 | TB_DEV_ATTR(target_core, pi_prot_format, S_IRUGO | S_IWUSR); | |
996 | TB_DEV_ATTR(target_core, enforce_pr_isids, S_IRUGO | S_IWUSR); | |
997 | TB_DEV_ATTR(target_core, is_nonrot, S_IRUGO | S_IWUSR); | |
998 | TB_DEV_ATTR(target_core, emulate_rest_reord, S_IRUGO | S_IWUSR); | |
999 | TB_DEV_ATTR(target_core, force_pr_aptpl, S_IRUGO | S_IWUSR) | |
1000 | TB_DEV_ATTR_RO(target_core, hw_block_size); | |
1001 | TB_DEV_ATTR(target_core, block_size, S_IRUGO | S_IWUSR) | |
1002 | TB_DEV_ATTR_RO(target_core, hw_max_sectors); | |
1003 | TB_DEV_ATTR(target_core, optimal_sectors, S_IRUGO | S_IWUSR); | |
1004 | TB_DEV_ATTR_RO(target_core, hw_queue_depth); | |
1005 | TB_DEV_ATTR(target_core, queue_depth, S_IRUGO | S_IWUSR); | |
1006 | TB_DEV_ATTR(target_core, max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
1007 | TB_DEV_ATTR(target_core, max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
1008 | TB_DEV_ATTR(target_core, unmap_granularity, S_IRUGO | S_IWUSR); | |
1009 | TB_DEV_ATTR(target_core, unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
1010 | TB_DEV_ATTR(target_core, max_write_same_len, S_IRUGO | S_IWUSR); | |
c66ac9db | 1011 | |
c66ac9db | 1012 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); |
c66ac9db NB |
1013 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); |
1014 | ||
5873c4d1 CH |
1015 | /* |
1016 | * dev_attrib attributes for devices using the target core SBC/SPC | |
1017 | * interpreter. Any backend using spc_parse_cdb should be using | |
1018 | * these. | |
1019 | */ | |
1020 | struct configfs_attribute *sbc_attrib_attrs[] = { | |
1021 | &target_core_dev_attrib_emulate_model_alias.attr, | |
1022 | &target_core_dev_attrib_emulate_dpo.attr, | |
1023 | &target_core_dev_attrib_emulate_fua_write.attr, | |
1024 | &target_core_dev_attrib_emulate_fua_read.attr, | |
1025 | &target_core_dev_attrib_emulate_write_cache.attr, | |
1026 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
1027 | &target_core_dev_attrib_emulate_tas.attr, | |
1028 | &target_core_dev_attrib_emulate_tpu.attr, | |
1029 | &target_core_dev_attrib_emulate_tpws.attr, | |
1030 | &target_core_dev_attrib_emulate_caw.attr, | |
1031 | &target_core_dev_attrib_emulate_3pc.attr, | |
1032 | &target_core_dev_attrib_pi_prot_type.attr, | |
1033 | &target_core_dev_attrib_hw_pi_prot_type.attr, | |
1034 | &target_core_dev_attrib_pi_prot_format.attr, | |
1035 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
1036 | &target_core_dev_attrib_is_nonrot.attr, | |
1037 | &target_core_dev_attrib_emulate_rest_reord.attr, | |
1038 | &target_core_dev_attrib_force_pr_aptpl.attr, | |
1039 | &target_core_dev_attrib_hw_block_size.attr, | |
1040 | &target_core_dev_attrib_block_size.attr, | |
1041 | &target_core_dev_attrib_hw_max_sectors.attr, | |
1042 | &target_core_dev_attrib_optimal_sectors.attr, | |
1043 | &target_core_dev_attrib_hw_queue_depth.attr, | |
1044 | &target_core_dev_attrib_queue_depth.attr, | |
1045 | &target_core_dev_attrib_max_unmap_lba_count.attr, | |
1046 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
1047 | &target_core_dev_attrib_unmap_granularity.attr, | |
1048 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
1049 | &target_core_dev_attrib_max_write_same_len.attr, | |
1050 | NULL, | |
1051 | }; | |
1052 | EXPORT_SYMBOL(sbc_attrib_attrs); | |
1053 | ||
5873c4d1 CH |
1054 | TB_DEV_ATTR_RO(target_pt, hw_pi_prot_type); |
1055 | TB_DEV_ATTR_RO(target_pt, hw_block_size); | |
1056 | TB_DEV_ATTR_RO(target_pt, hw_max_sectors); | |
1057 | TB_DEV_ATTR_RO(target_pt, hw_queue_depth); | |
1058 | ||
1059 | /* | |
1060 | * Minimal dev_attrib attributes for devices passing through CDBs. | |
1061 | * In this case we only provide a few read-only attributes for | |
1062 | * backwards compatibility. | |
1063 | */ | |
1064 | struct configfs_attribute *passthrough_attrib_attrs[] = { | |
1065 | &target_pt_dev_attrib_hw_pi_prot_type.attr, | |
1066 | &target_pt_dev_attrib_hw_block_size.attr, | |
1067 | &target_pt_dev_attrib_hw_max_sectors.attr, | |
1068 | &target_pt_dev_attrib_hw_queue_depth.attr, | |
1069 | NULL, | |
1070 | }; | |
1071 | EXPORT_SYMBOL(passthrough_attrib_attrs); | |
1072 | ||
c66ac9db NB |
1073 | static struct configfs_item_operations target_core_dev_attrib_ops = { |
1074 | .show_attribute = target_core_dev_attrib_attr_show, | |
1075 | .store_attribute = target_core_dev_attrib_attr_store, | |
1076 | }; | |
1077 | ||
0a06d430 | 1078 | TB_CIT_SETUP_DRV(dev_attrib, &target_core_dev_attrib_ops, NULL); |
c66ac9db | 1079 | |
f79a897e | 1080 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 1081 | |
f8d389c6 | 1082 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db NB |
1083 | |
1084 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
1085 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
1086 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
1087 | __CONFIGFS_EATTR(_name, _mode, \ | |
1088 | target_core_dev_wwn_show_attr_##_name, \ | |
1089 | target_core_dev_wwn_store_attr_##_name); | |
1090 | ||
1091 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
1092 | do { \ | |
1093 | static struct target_core_dev_wwn_attribute \ | |
1094 | target_core_dev_wwn_##_name = \ | |
1095 | __CONFIGFS_EATTR_RO(_name, \ | |
1096 | target_core_dev_wwn_show_attr_##_name); \ | |
1097 | } while (0); | |
1098 | ||
1099 | /* | |
1100 | * VPD page 0x80 Unit serial | |
1101 | */ | |
1102 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
1103 | struct t10_wwn *t10_wwn, | |
1104 | char *page) | |
1105 | { | |
c66ac9db NB |
1106 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
1107 | &t10_wwn->unit_serial[0]); | |
1108 | } | |
1109 | ||
1110 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
1111 | struct t10_wwn *t10_wwn, | |
1112 | const char *page, | |
1113 | size_t count) | |
1114 | { | |
0fd97ccf | 1115 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
1116 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
1117 | ||
1118 | /* | |
1119 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
1120 | * from the struct scsi_device level firmware, do not allow | |
1121 | * VPD Unit Serial to be emulated. | |
1122 | * | |
1123 | * Note this struct scsi_device could also be emulating VPD | |
1124 | * information from its drivers/scsi LLD. But for now we assume | |
1125 | * it is doing 'the right thing' wrt a world wide unique | |
1126 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
1127 | */ | |
0fd97ccf | 1128 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 1129 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
1130 | " Unit Serial, ignoring request\n"); |
1131 | return -EOPNOTSUPP; | |
1132 | } | |
1133 | ||
60d645a4 | 1134 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 1135 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
1136 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
1137 | return -EOVERFLOW; | |
1138 | } | |
1139 | /* | |
1140 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
1141 | * do exist, fail here as changing this information on the fly | |
1142 | * (underneath the initiator side OS dependent multipath code) | |
1143 | * could cause negative effects. | |
1144 | */ | |
0fd97ccf CH |
1145 | if (dev->export_count) { |
1146 | pr_err("Unable to set VPD Unit Serial while" | |
1147 | " active %d $FABRIC_MOD exports exist\n", | |
1148 | dev->export_count); | |
1149 | return -EINVAL; | |
c66ac9db | 1150 | } |
0fd97ccf | 1151 | |
c66ac9db NB |
1152 | /* |
1153 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
1154 | * | |
1155 | * Also, strip any newline added from the userspace | |
1156 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
1157 | */ | |
1158 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
1159 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 1160 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 1161 | "%s", strstrip(buf)); |
0fd97ccf | 1162 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 1163 | |
6708bb27 | 1164 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 1165 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
1166 | |
1167 | return count; | |
1168 | } | |
1169 | ||
1170 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
1171 | ||
1172 | /* | |
1173 | * VPD page 0x83 Protocol Identifier | |
1174 | */ | |
1175 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
1176 | struct t10_wwn *t10_wwn, | |
1177 | char *page) | |
1178 | { | |
c66ac9db NB |
1179 | struct t10_vpd *vpd; |
1180 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
1181 | ssize_t len = 0; | |
1182 | ||
c66ac9db NB |
1183 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
1184 | ||
1185 | spin_lock(&t10_wwn->t10_vpd_lock); | |
1186 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 1187 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
1188 | continue; |
1189 | ||
1190 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
1191 | ||
6708bb27 | 1192 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1193 | break; |
1194 | ||
1195 | len += sprintf(page+len, "%s", buf); | |
1196 | } | |
1197 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
1198 | ||
1199 | return len; | |
1200 | } | |
1201 | ||
1202 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
1203 | struct t10_wwn *t10_wwn, | |
1204 | const char *page, | |
1205 | size_t count) | |
1206 | { | |
1207 | return -ENOSYS; | |
1208 | } | |
1209 | ||
1210 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
1211 | ||
1212 | /* | |
1213 | * Generic wrapper for dumping VPD identifiers by association. | |
1214 | */ | |
1215 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
1216 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
1217 | struct t10_wwn *t10_wwn, \ | |
1218 | char *page) \ | |
1219 | { \ | |
c66ac9db NB |
1220 | struct t10_vpd *vpd; \ |
1221 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
1222 | ssize_t len = 0; \ | |
1223 | \ | |
c66ac9db NB |
1224 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
1225 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
1226 | if (vpd->association != _assoc) \ | |
1227 | continue; \ | |
1228 | \ | |
1229 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1230 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1231 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1232 | break; \ |
1233 | len += sprintf(page+len, "%s", buf); \ | |
1234 | \ | |
1235 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1236 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1237 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1238 | break; \ |
1239 | len += sprintf(page+len, "%s", buf); \ | |
1240 | \ | |
1241 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1242 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1243 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1244 | break; \ |
1245 | len += sprintf(page+len, "%s", buf); \ | |
1246 | } \ | |
1247 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
1248 | \ | |
1249 | return len; \ | |
1250 | } | |
1251 | ||
1252 | /* | |
163cd5fa | 1253 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
1254 | */ |
1255 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
1256 | ||
1257 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
1258 | struct t10_wwn *t10_wwn, | |
1259 | const char *page, | |
1260 | size_t count) | |
1261 | { | |
1262 | return -ENOSYS; | |
1263 | } | |
1264 | ||
1265 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
1266 | ||
1267 | /* | |
1268 | * VPD page 0x83 Association: Target Port | |
1269 | */ | |
1270 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
1271 | ||
1272 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
1273 | struct t10_wwn *t10_wwn, | |
1274 | const char *page, | |
1275 | size_t count) | |
1276 | { | |
1277 | return -ENOSYS; | |
1278 | } | |
1279 | ||
1280 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
1281 | ||
1282 | /* | |
1283 | * VPD page 0x83 Association: SCSI Target Device | |
1284 | */ | |
1285 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
1286 | ||
1287 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
1288 | struct t10_wwn *t10_wwn, | |
1289 | const char *page, | |
1290 | size_t count) | |
1291 | { | |
1292 | return -ENOSYS; | |
1293 | } | |
1294 | ||
1295 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
1296 | ||
1297 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
1298 | ||
1299 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
1300 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
1301 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
1302 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
1303 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
1304 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1305 | NULL, | |
1306 | }; | |
1307 | ||
1308 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1309 | .show_attribute = target_core_dev_wwn_attr_show, | |
1310 | .store_attribute = target_core_dev_wwn_attr_store, | |
1311 | }; | |
1312 | ||
f8d389c6 | 1313 | TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 1314 | |
f8d389c6 | 1315 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1316 | |
91e2e39b | 1317 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1318 | |
0fd97ccf | 1319 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
c66ac9db NB |
1320 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
1321 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1322 | __CONFIGFS_EATTR(_name, _mode, \ | |
1323 | target_core_dev_pr_show_attr_##_name, \ | |
1324 | target_core_dev_pr_store_attr_##_name); | |
1325 | ||
1326 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1327 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1328 | __CONFIGFS_EATTR_RO(_name, \ | |
1329 | target_core_dev_pr_show_attr_##_name); | |
1330 | ||
d977f437 CH |
1331 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
1332 | char *page) | |
c66ac9db NB |
1333 | { |
1334 | struct se_node_acl *se_nacl; | |
1335 | struct t10_pr_registration *pr_reg; | |
1336 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
1337 | |
1338 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1339 | ||
c66ac9db | 1340 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
1341 | if (!pr_reg) |
1342 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
1343 | ||
c66ac9db | 1344 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 1345 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 1346 | |
d977f437 | 1347 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 1348 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 1349 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
1350 | } |
1351 | ||
d977f437 CH |
1352 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
1353 | char *page) | |
c66ac9db NB |
1354 | { |
1355 | struct se_node_acl *se_nacl; | |
d977f437 | 1356 | ssize_t len; |
c66ac9db | 1357 | |
c66ac9db | 1358 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
1359 | if (se_nacl) { |
1360 | len = sprintf(page, | |
1361 | "SPC-2 Reservation: %s Initiator: %s\n", | |
1362 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
1363 | se_nacl->initiatorname); | |
1364 | } else { | |
1365 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1366 | } |
d977f437 | 1367 | return len; |
c66ac9db NB |
1368 | } |
1369 | ||
0fd97ccf CH |
1370 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
1371 | char *page) | |
c66ac9db | 1372 | { |
d977f437 | 1373 | int ret; |
c66ac9db | 1374 | |
a3541703 | 1375 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 | 1376 | return sprintf(page, "Passthrough\n"); |
c66ac9db | 1377 | |
d977f437 CH |
1378 | spin_lock(&dev->dev_reservation_lock); |
1379 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1380 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1381 | else | |
1382 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1383 | spin_unlock(&dev->dev_reservation_lock); | |
1384 | return ret; | |
c66ac9db NB |
1385 | } |
1386 | ||
1387 | SE_DEV_PR_ATTR_RO(res_holder); | |
1388 | ||
c66ac9db | 1389 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
0fd97ccf | 1390 | struct se_device *dev, char *page) |
c66ac9db | 1391 | { |
c66ac9db NB |
1392 | ssize_t len = 0; |
1393 | ||
c66ac9db | 1394 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1395 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1396 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1397 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1398 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1399 | " Ports registration\n"); | |
d977f437 | 1400 | } else { |
c66ac9db NB |
1401 | len = sprintf(page, "SPC-3 Reservation: Single" |
1402 | " Target Port registration\n"); | |
d977f437 | 1403 | } |
c66ac9db | 1404 | |
d977f437 | 1405 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1406 | return len; |
1407 | } | |
1408 | ||
1409 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1410 | ||
c66ac9db | 1411 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
0fd97ccf | 1412 | struct se_device *dev, char *page) |
c66ac9db | 1413 | { |
0fd97ccf | 1414 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
c66ac9db NB |
1415 | } |
1416 | ||
1417 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1418 | ||
1419 | /* | |
1420 | * res_pr_holder_tg_port | |
1421 | */ | |
1422 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
0fd97ccf | 1423 | struct se_device *dev, char *page) |
c66ac9db | 1424 | { |
c66ac9db | 1425 | struct se_node_acl *se_nacl; |
c66ac9db NB |
1426 | struct se_portal_group *se_tpg; |
1427 | struct t10_pr_registration *pr_reg; | |
9ac8928e | 1428 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1429 | ssize_t len = 0; |
1430 | ||
c66ac9db NB |
1431 | spin_lock(&dev->dev_reservation_lock); |
1432 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1433 | if (!pr_reg) { |
c66ac9db | 1434 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1435 | goto out_unlock; |
c66ac9db | 1436 | } |
d977f437 | 1437 | |
c66ac9db NB |
1438 | se_nacl = pr_reg->pr_reg_nacl; |
1439 | se_tpg = se_nacl->se_tpg; | |
e3d6f909 | 1440 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1441 | |
1442 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1443 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1444 | tfo->tpg_get_wwn(se_tpg)); | |
1445 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1446 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
f2d30680 | 1447 | " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, |
c66ac9db | 1448 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), |
79dc9c9e | 1449 | tfo->get_fabric_name(), pr_reg->pr_aptpl_target_lun); |
c66ac9db | 1450 | |
d977f437 CH |
1451 | out_unlock: |
1452 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1453 | return len; |
1454 | } | |
1455 | ||
1456 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1457 | ||
c66ac9db | 1458 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
0fd97ccf | 1459 | struct se_device *dev, char *page) |
c66ac9db | 1460 | { |
9ac8928e | 1461 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1462 | struct t10_pr_registration *pr_reg; |
1463 | unsigned char buf[384]; | |
1464 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1465 | ssize_t len = 0; | |
d2843c17 | 1466 | int reg_count = 0; |
c66ac9db | 1467 | |
c66ac9db NB |
1468 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1469 | ||
0fd97ccf CH |
1470 | spin_lock(&dev->t10_pr.registration_lock); |
1471 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1472 | pr_reg_list) { |
1473 | ||
1474 | memset(buf, 0, 384); | |
1475 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1476 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 1477 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
1478 | PR_REG_ISID_ID_LEN); |
1479 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1480 | tfo->get_fabric_name(), | |
d2843c17 | 1481 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1482 | pr_reg->pr_res_generation); |
1483 | ||
6708bb27 | 1484 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1485 | break; |
1486 | ||
1487 | len += sprintf(page+len, "%s", buf); | |
1488 | reg_count++; | |
1489 | } | |
0fd97ccf | 1490 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1491 | |
6708bb27 | 1492 | if (!reg_count) |
c66ac9db NB |
1493 | len += sprintf(page+len, "None\n"); |
1494 | ||
1495 | return len; | |
1496 | } | |
1497 | ||
1498 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1499 | ||
c66ac9db | 1500 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
0fd97ccf | 1501 | struct se_device *dev, char *page) |
c66ac9db | 1502 | { |
c66ac9db NB |
1503 | struct t10_pr_registration *pr_reg; |
1504 | ssize_t len = 0; | |
1505 | ||
c66ac9db NB |
1506 | spin_lock(&dev->dev_reservation_lock); |
1507 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1508 | if (pr_reg) { |
1509 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1510 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1511 | } else { | |
c66ac9db | 1512 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1513 | } |
c66ac9db | 1514 | |
d977f437 | 1515 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1516 | return len; |
1517 | } | |
1518 | ||
1519 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1520 | ||
c66ac9db | 1521 | static ssize_t target_core_dev_pr_show_attr_res_type( |
0fd97ccf | 1522 | struct se_device *dev, char *page) |
c66ac9db | 1523 | { |
a3541703 | 1524 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
d977f437 CH |
1525 | return sprintf(page, "SPC_PASSTHROUGH\n"); |
1526 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1527 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1528 | else | |
1529 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1530 | } |
1531 | ||
1532 | SE_DEV_PR_ATTR_RO(res_type); | |
1533 | ||
c66ac9db | 1534 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
0fd97ccf | 1535 | struct se_device *dev, char *page) |
c66ac9db | 1536 | { |
a3541703 | 1537 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
c66ac9db NB |
1538 | return 0; |
1539 | ||
1540 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1541 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1542 | } |
1543 | ||
1544 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1545 | ||
1546 | /* | |
1547 | * res_aptpl_metadata | |
1548 | */ | |
1549 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
0fd97ccf | 1550 | struct se_device *dev, char *page) |
c66ac9db | 1551 | { |
a3541703 | 1552 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
c66ac9db NB |
1553 | return 0; |
1554 | ||
1555 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1556 | } | |
1557 | ||
1558 | enum { | |
1559 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1560 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1561 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1562 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1563 | }; | |
1564 | ||
1565 | static match_table_t tokens = { | |
1566 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1567 | {Opt_initiator_node, "initiator_node=%s"}, | |
1568 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1569 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1570 | {Opt_res_holder, "res_holder=%d"}, | |
1571 | {Opt_res_type, "res_type=%d"}, | |
1572 | {Opt_res_scope, "res_scope=%d"}, | |
1573 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
f2d30680 | 1574 | {Opt_mapped_lun, "mapped_lun=%lld"}, |
c66ac9db NB |
1575 | {Opt_target_fabric, "target_fabric=%s"}, |
1576 | {Opt_target_node, "target_node=%s"}, | |
1577 | {Opt_tpgt, "tpgt=%d"}, | |
1578 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
f2d30680 | 1579 | {Opt_target_lun, "target_lun=%lld"}, |
c66ac9db NB |
1580 | {Opt_err, NULL} |
1581 | }; | |
1582 | ||
1583 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
0fd97ccf | 1584 | struct se_device *dev, |
c66ac9db NB |
1585 | const char *page, |
1586 | size_t count) | |
1587 | { | |
6d180253 JJ |
1588 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1589 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 1590 | char *orig, *ptr, *opts; |
c66ac9db NB |
1591 | substring_t args[MAX_OPT_ARGS]; |
1592 | unsigned long long tmp_ll; | |
1593 | u64 sa_res_key = 0; | |
f2d30680 | 1594 | u64 mapped_lun = 0, target_lun = 0; |
c66ac9db | 1595 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; |
45fb94c2 BVA |
1596 | u16 tpgt = 0; |
1597 | u8 type = 0; | |
c66ac9db | 1598 | |
a3541703 | 1599 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) |
9105bfc0 | 1600 | return count; |
d977f437 | 1601 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
9105bfc0 | 1602 | return count; |
c66ac9db | 1603 | |
0fd97ccf | 1604 | if (dev->export_count) { |
6708bb27 | 1605 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1606 | " active fabric exports exist\n"); |
1607 | return -EINVAL; | |
1608 | } | |
1609 | ||
1610 | opts = kstrdup(page, GFP_KERNEL); | |
1611 | if (!opts) | |
1612 | return -ENOMEM; | |
1613 | ||
1614 | orig = opts; | |
90c161b6 | 1615 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1616 | if (!*ptr) |
1617 | continue; | |
1618 | ||
1619 | token = match_token(ptr, tokens, args); | |
1620 | switch (token) { | |
1621 | case Opt_initiator_fabric: | |
8d213559 | 1622 | i_fabric = match_strdup(args); |
6d180253 JJ |
1623 | if (!i_fabric) { |
1624 | ret = -ENOMEM; | |
1625 | goto out; | |
1626 | } | |
c66ac9db NB |
1627 | break; |
1628 | case Opt_initiator_node: | |
8d213559 | 1629 | i_port = match_strdup(args); |
6d180253 JJ |
1630 | if (!i_port) { |
1631 | ret = -ENOMEM; | |
1632 | goto out; | |
1633 | } | |
60d645a4 | 1634 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1635 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1636 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1637 | PR_APTPL_MAX_IPORT_LEN); | |
1638 | ret = -EINVAL; | |
1639 | break; | |
1640 | } | |
1641 | break; | |
1642 | case Opt_initiator_sid: | |
8d213559 | 1643 | isid = match_strdup(args); |
6d180253 JJ |
1644 | if (!isid) { |
1645 | ret = -ENOMEM; | |
1646 | goto out; | |
1647 | } | |
60d645a4 | 1648 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1649 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1650 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1651 | PR_REG_ISID_LEN); | |
1652 | ret = -EINVAL; | |
1653 | break; | |
1654 | } | |
1655 | break; | |
1656 | case Opt_sa_res_key: | |
8d213559 | 1657 | ret = kstrtoull(args->from, 0, &tmp_ll); |
c66ac9db | 1658 | if (ret < 0) { |
8d213559 | 1659 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1660 | goto out; |
1661 | } | |
1662 | sa_res_key = (u64)tmp_ll; | |
1663 | break; | |
1664 | /* | |
1665 | * PR APTPL Metadata for Reservation | |
1666 | */ | |
1667 | case Opt_res_holder: | |
c2091026 DD |
1668 | ret = match_int(args, &arg); |
1669 | if (ret) | |
1670 | goto out; | |
c66ac9db NB |
1671 | res_holder = arg; |
1672 | break; | |
1673 | case Opt_res_type: | |
c2091026 DD |
1674 | ret = match_int(args, &arg); |
1675 | if (ret) | |
1676 | goto out; | |
c66ac9db NB |
1677 | type = (u8)arg; |
1678 | break; | |
1679 | case Opt_res_scope: | |
c2091026 DD |
1680 | ret = match_int(args, &arg); |
1681 | if (ret) | |
1682 | goto out; | |
c66ac9db NB |
1683 | break; |
1684 | case Opt_res_all_tg_pt: | |
c2091026 DD |
1685 | ret = match_int(args, &arg); |
1686 | if (ret) | |
1687 | goto out; | |
c66ac9db NB |
1688 | all_tg_pt = (int)arg; |
1689 | break; | |
1690 | case Opt_mapped_lun: | |
c2091026 DD |
1691 | ret = match_int(args, &arg); |
1692 | if (ret) | |
1693 | goto out; | |
f2d30680 | 1694 | mapped_lun = (u64)arg; |
c66ac9db NB |
1695 | break; |
1696 | /* | |
1697 | * PR APTPL Metadata for Target Port | |
1698 | */ | |
1699 | case Opt_target_fabric: | |
8d213559 | 1700 | t_fabric = match_strdup(args); |
6d180253 JJ |
1701 | if (!t_fabric) { |
1702 | ret = -ENOMEM; | |
1703 | goto out; | |
1704 | } | |
c66ac9db NB |
1705 | break; |
1706 | case Opt_target_node: | |
8d213559 | 1707 | t_port = match_strdup(args); |
6d180253 JJ |
1708 | if (!t_port) { |
1709 | ret = -ENOMEM; | |
1710 | goto out; | |
1711 | } | |
60d645a4 | 1712 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1713 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1714 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1715 | PR_APTPL_MAX_TPORT_LEN); | |
1716 | ret = -EINVAL; | |
1717 | break; | |
1718 | } | |
1719 | break; | |
1720 | case Opt_tpgt: | |
c2091026 DD |
1721 | ret = match_int(args, &arg); |
1722 | if (ret) | |
1723 | goto out; | |
c66ac9db NB |
1724 | tpgt = (u16)arg; |
1725 | break; | |
1726 | case Opt_port_rtpi: | |
c2091026 DD |
1727 | ret = match_int(args, &arg); |
1728 | if (ret) | |
1729 | goto out; | |
c66ac9db NB |
1730 | break; |
1731 | case Opt_target_lun: | |
c2091026 DD |
1732 | ret = match_int(args, &arg); |
1733 | if (ret) | |
1734 | goto out; | |
f2d30680 | 1735 | target_lun = (u64)arg; |
c66ac9db NB |
1736 | break; |
1737 | default: | |
1738 | break; | |
1739 | } | |
1740 | } | |
1741 | ||
6708bb27 AG |
1742 | if (!i_port || !t_port || !sa_res_key) { |
1743 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1744 | ret = -EINVAL; |
1745 | goto out; | |
1746 | } | |
1747 | ||
1748 | if (res_holder && !(type)) { | |
6708bb27 | 1749 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1750 | " holder\n", type); |
1751 | ret = -EINVAL; | |
1752 | goto out; | |
1753 | } | |
1754 | ||
0fd97ccf | 1755 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1756 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1757 | res_holder, all_tg_pt, type); | |
1758 | out: | |
6d180253 JJ |
1759 | kfree(i_fabric); |
1760 | kfree(i_port); | |
1761 | kfree(isid); | |
1762 | kfree(t_fabric); | |
1763 | kfree(t_port); | |
c66ac9db NB |
1764 | kfree(orig); |
1765 | return (ret == 0) ? count : ret; | |
1766 | } | |
1767 | ||
1768 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1769 | ||
0fd97ccf | 1770 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
c66ac9db NB |
1771 | |
1772 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1773 | &target_core_dev_pr_res_holder.attr, | |
1774 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1775 | &target_core_dev_pr_res_pr_generation.attr, | |
1776 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1777 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1778 | &target_core_dev_pr_res_pr_type.attr, | |
1779 | &target_core_dev_pr_res_type.attr, | |
1780 | &target_core_dev_pr_res_aptpl_active.attr, | |
1781 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1782 | NULL, | |
1783 | }; | |
1784 | ||
1785 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1786 | .show_attribute = target_core_dev_pr_attr_show, | |
1787 | .store_attribute = target_core_dev_pr_attr_store, | |
1788 | }; | |
1789 | ||
91e2e39b | 1790 | TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); |
c66ac9db | 1791 | |
91e2e39b | 1792 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1793 | |
73112edc | 1794 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
1795 | |
1796 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1797 | { | |
0fd97ccf | 1798 | struct se_device *dev = p; |
c66ac9db NB |
1799 | int bl = 0; |
1800 | ssize_t read_bytes = 0; | |
1801 | ||
0fd97ccf | 1802 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1803 | read_bytes += bl; |
0a06d430 CH |
1804 | read_bytes += dev->transport->show_configfs_dev_params(dev, |
1805 | page+read_bytes); | |
c66ac9db NB |
1806 | return read_bytes; |
1807 | } | |
1808 | ||
1809 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1810 | .attr = { .ca_owner = THIS_MODULE, | |
1811 | .ca_name = "info", | |
1812 | .ca_mode = S_IRUGO }, | |
1813 | .show = target_core_show_dev_info, | |
1814 | .store = NULL, | |
1815 | }; | |
1816 | ||
1817 | static ssize_t target_core_store_dev_control( | |
1818 | void *p, | |
1819 | const char *page, | |
1820 | size_t count) | |
1821 | { | |
0fd97ccf | 1822 | struct se_device *dev = p; |
c66ac9db | 1823 | |
0a06d430 | 1824 | return dev->transport->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1825 | } |
1826 | ||
1827 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1828 | .attr = { .ca_owner = THIS_MODULE, | |
1829 | .ca_name = "control", | |
1830 | .ca_mode = S_IWUSR }, | |
1831 | .show = NULL, | |
1832 | .store = target_core_store_dev_control, | |
1833 | }; | |
1834 | ||
1835 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1836 | { | |
0fd97ccf | 1837 | struct se_device *dev = p; |
c66ac9db | 1838 | |
0fd97ccf | 1839 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1840 | return 0; |
1841 | ||
0fd97ccf | 1842 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1843 | } |
1844 | ||
1845 | static ssize_t target_core_store_dev_alias( | |
1846 | void *p, | |
1847 | const char *page, | |
1848 | size_t count) | |
1849 | { | |
0fd97ccf CH |
1850 | struct se_device *dev = p; |
1851 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1852 | ssize_t read_bytes; |
1853 | ||
1854 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1855 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1856 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1857 | SE_DEV_ALIAS_LEN-1); | |
1858 | return -EINVAL; | |
1859 | } | |
1860 | ||
0fd97ccf | 1861 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1862 | if (!read_bytes) |
1863 | return -EINVAL; | |
0fd97ccf CH |
1864 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1865 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1866 | |
0fd97ccf | 1867 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1868 | |
6708bb27 | 1869 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1870 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1871 | config_item_name(&dev->dev_group.cg_item), |
1872 | dev->dev_alias); | |
c66ac9db NB |
1873 | |
1874 | return read_bytes; | |
1875 | } | |
1876 | ||
1877 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1878 | .attr = { .ca_owner = THIS_MODULE, | |
1879 | .ca_name = "alias", | |
1880 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1881 | .show = target_core_show_dev_alias, | |
1882 | .store = target_core_store_dev_alias, | |
1883 | }; | |
1884 | ||
1885 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1886 | { | |
0fd97ccf | 1887 | struct se_device *dev = p; |
c66ac9db | 1888 | |
0fd97ccf | 1889 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1890 | return 0; |
1891 | ||
0fd97ccf | 1892 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1893 | } |
1894 | ||
1895 | static ssize_t target_core_store_dev_udev_path( | |
1896 | void *p, | |
1897 | const char *page, | |
1898 | size_t count) | |
1899 | { | |
0fd97ccf CH |
1900 | struct se_device *dev = p; |
1901 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1902 | ssize_t read_bytes; |
1903 | ||
1904 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1905 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1906 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1907 | SE_UDEV_PATH_LEN-1); | |
1908 | return -EINVAL; | |
1909 | } | |
1910 | ||
0fd97ccf | 1911 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1912 | "%s", page); |
3011684c DC |
1913 | if (!read_bytes) |
1914 | return -EINVAL; | |
0fd97ccf CH |
1915 | if (dev->udev_path[read_bytes - 1] == '\n') |
1916 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1917 | |
0fd97ccf | 1918 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1919 | |
6708bb27 | 1920 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1921 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1922 | config_item_name(&dev->dev_group.cg_item), |
1923 | dev->udev_path); | |
c66ac9db NB |
1924 | |
1925 | return read_bytes; | |
1926 | } | |
1927 | ||
1928 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1929 | .attr = { .ca_owner = THIS_MODULE, | |
1930 | .ca_name = "udev_path", | |
1931 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1932 | .show = target_core_show_dev_udev_path, | |
1933 | .store = target_core_store_dev_udev_path, | |
1934 | }; | |
1935 | ||
64146db7 AG |
1936 | static ssize_t target_core_show_dev_enable(void *p, char *page) |
1937 | { | |
1938 | struct se_device *dev = p; | |
1939 | ||
1940 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); | |
1941 | } | |
1942 | ||
c66ac9db NB |
1943 | static ssize_t target_core_store_dev_enable( |
1944 | void *p, | |
1945 | const char *page, | |
1946 | size_t count) | |
1947 | { | |
0fd97ccf | 1948 | struct se_device *dev = p; |
c66ac9db | 1949 | char *ptr; |
0fd97ccf | 1950 | int ret; |
c66ac9db NB |
1951 | |
1952 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1953 | if (!ptr) { |
1954 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1955 | " is \"1\"\n"); |
1956 | return -EINVAL; | |
1957 | } | |
c66ac9db | 1958 | |
0fd97ccf CH |
1959 | ret = target_configure_device(dev); |
1960 | if (ret) | |
1961 | return ret; | |
c66ac9db NB |
1962 | return count; |
1963 | } | |
1964 | ||
1965 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1966 | .attr = { .ca_owner = THIS_MODULE, | |
1967 | .ca_name = "enable", | |
64146db7 AG |
1968 | .ca_mode = S_IRUGO | S_IWUSR }, |
1969 | .show = target_core_show_dev_enable, | |
c66ac9db NB |
1970 | .store = target_core_store_dev_enable, |
1971 | }; | |
1972 | ||
1973 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1974 | { | |
0fd97ccf | 1975 | struct se_device *dev = p; |
c66ac9db NB |
1976 | struct config_item *lu_ci; |
1977 | struct t10_alua_lu_gp *lu_gp; | |
1978 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1979 | ssize_t len = 0; | |
1980 | ||
c66ac9db | 1981 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1982 | if (!lu_gp_mem) |
1983 | return 0; | |
c66ac9db NB |
1984 | |
1985 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1986 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1987 | if (lu_gp) { |
c66ac9db NB |
1988 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1989 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1990 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1991 | } | |
1992 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1993 | ||
1994 | return len; | |
1995 | } | |
1996 | ||
1997 | static ssize_t target_core_store_alua_lu_gp( | |
1998 | void *p, | |
1999 | const char *page, | |
2000 | size_t count) | |
2001 | { | |
0fd97ccf CH |
2002 | struct se_device *dev = p; |
2003 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
2004 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
2005 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2006 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2007 | int move = 0; | |
2008 | ||
c87fbd56 CH |
2009 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
2010 | if (!lu_gp_mem) | |
9105bfc0 | 2011 | return count; |
c87fbd56 | 2012 | |
c66ac9db | 2013 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 2014 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
2015 | return -EINVAL; |
2016 | } | |
2017 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2018 | memcpy(buf, page, count); | |
2019 | /* | |
2020 | * Any ALUA logical unit alias besides "NULL" means we will be | |
2021 | * making a new group association. | |
2022 | */ | |
2023 | if (strcmp(strstrip(buf), "NULL")) { | |
2024 | /* | |
2025 | * core_alua_get_lu_gp_by_name() will increment reference to | |
2026 | * struct t10_alua_lu_gp. This reference is released with | |
2027 | * core_alua_get_lu_gp_by_name below(). | |
2028 | */ | |
2029 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 2030 | if (!lu_gp_new) |
c66ac9db NB |
2031 | return -ENODEV; |
2032 | } | |
c66ac9db NB |
2033 | |
2034 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
2035 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 2036 | if (lu_gp) { |
c66ac9db NB |
2037 | /* |
2038 | * Clearing an existing lu_gp association, and replacing | |
2039 | * with NULL | |
2040 | */ | |
6708bb27 AG |
2041 | if (!lu_gp_new) { |
2042 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
2043 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
2044 | " %hu\n", | |
2045 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2046 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
2047 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
2048 | lu_gp->lu_gp_id); | |
2049 | ||
2050 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
2051 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2052 | ||
2053 | return count; | |
2054 | } | |
2055 | /* | |
2056 | * Removing existing association of lu_gp_mem with lu_gp | |
2057 | */ | |
2058 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
2059 | move = 1; | |
2060 | } | |
2061 | /* | |
2062 | * Associate lu_gp_mem with lu_gp_new. | |
2063 | */ | |
2064 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
2065 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2066 | ||
6708bb27 | 2067 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
2068 | " core/alua/lu_gps/%s, ID: %hu\n", |
2069 | (move) ? "Moving" : "Adding", | |
2070 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2071 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
2072 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
2073 | lu_gp_new->lu_gp_id); | |
2074 | ||
2075 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
2076 | return count; | |
2077 | } | |
2078 | ||
2079 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
2080 | .attr = { .ca_owner = THIS_MODULE, | |
2081 | .ca_name = "alua_lu_gp", | |
2082 | .ca_mode = S_IRUGO | S_IWUSR }, | |
2083 | .show = target_core_show_alua_lu_gp, | |
2084 | .store = target_core_store_alua_lu_gp, | |
2085 | }; | |
2086 | ||
229d4f11 HR |
2087 | static ssize_t target_core_show_dev_lba_map(void *p, char *page) |
2088 | { | |
2089 | struct se_device *dev = p; | |
2090 | struct t10_alua_lba_map *map; | |
2091 | struct t10_alua_lba_map_member *mem; | |
2092 | char *b = page; | |
2093 | int bl = 0; | |
2094 | char state; | |
2095 | ||
2096 | spin_lock(&dev->t10_alua.lba_map_lock); | |
2097 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
2098 | bl += sprintf(b + bl, "%u %u\n", | |
2099 | dev->t10_alua.lba_map_segment_size, | |
2100 | dev->t10_alua.lba_map_segment_multiplier); | |
2101 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
2102 | bl += sprintf(b + bl, "%llu %llu", | |
2103 | map->lba_map_first_lba, map->lba_map_last_lba); | |
2104 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
2105 | lba_map_mem_list) { | |
2106 | switch (mem->lba_map_mem_alua_state) { | |
2107 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
2108 | state = 'O'; | |
2109 | break; | |
2110 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
2111 | state = 'A'; | |
2112 | break; | |
2113 | case ALUA_ACCESS_STATE_STANDBY: | |
2114 | state = 'S'; | |
2115 | break; | |
2116 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
2117 | state = 'U'; | |
2118 | break; | |
2119 | default: | |
2120 | state = '.'; | |
2121 | break; | |
2122 | } | |
2123 | bl += sprintf(b + bl, " %d:%c", | |
2124 | mem->lba_map_mem_alua_pg_id, state); | |
2125 | } | |
2126 | bl += sprintf(b + bl, "\n"); | |
2127 | } | |
2128 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
2129 | return bl; | |
2130 | } | |
2131 | ||
2132 | static ssize_t target_core_store_dev_lba_map( | |
2133 | void *p, | |
2134 | const char *page, | |
2135 | size_t count) | |
2136 | { | |
2137 | struct se_device *dev = p; | |
2138 | struct t10_alua_lba_map *lba_map = NULL; | |
2139 | struct list_head lba_list; | |
2140 | char *map_entries, *ptr; | |
2141 | char state; | |
2142 | int pg_num = -1, pg; | |
2143 | int ret = 0, num = 0, pg_id, alua_state; | |
2144 | unsigned long start_lba = -1, end_lba = -1; | |
2145 | unsigned long segment_size = -1, segment_mult = -1; | |
2146 | ||
2147 | map_entries = kstrdup(page, GFP_KERNEL); | |
2148 | if (!map_entries) | |
2149 | return -ENOMEM; | |
2150 | ||
2151 | INIT_LIST_HEAD(&lba_list); | |
2152 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
2153 | if (!*ptr) | |
2154 | continue; | |
2155 | ||
2156 | if (num == 0) { | |
2157 | if (sscanf(ptr, "%lu %lu\n", | |
2158 | &segment_size, &segment_mult) != 2) { | |
2159 | pr_err("Invalid line %d\n", num); | |
2160 | ret = -EINVAL; | |
2161 | break; | |
2162 | } | |
2163 | num++; | |
2164 | continue; | |
2165 | } | |
2166 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
2167 | pr_err("Invalid line %d\n", num); | |
2168 | ret = -EINVAL; | |
2169 | break; | |
2170 | } | |
2171 | ptr = strchr(ptr, ' '); | |
2172 | if (!ptr) { | |
2173 | pr_err("Invalid line %d, missing end lba\n", num); | |
2174 | ret = -EINVAL; | |
2175 | break; | |
2176 | } | |
2177 | ptr++; | |
2178 | ptr = strchr(ptr, ' '); | |
2179 | if (!ptr) { | |
2180 | pr_err("Invalid line %d, missing state definitions\n", | |
2181 | num); | |
2182 | ret = -EINVAL; | |
2183 | break; | |
2184 | } | |
2185 | ptr++; | |
2186 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
2187 | start_lba, end_lba); | |
2188 | if (IS_ERR(lba_map)) { | |
2189 | ret = PTR_ERR(lba_map); | |
2190 | break; | |
2191 | } | |
2192 | pg = 0; | |
2193 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
2194 | switch (state) { | |
2195 | case 'O': | |
2196 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
2197 | break; | |
2198 | case 'A': | |
2199 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
2200 | break; | |
2201 | case 'S': | |
2202 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
2203 | break; | |
2204 | case 'U': | |
2205 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
2206 | break; | |
2207 | default: | |
2208 | pr_err("Invalid ALUA state '%c'\n", state); | |
2209 | ret = -EINVAL; | |
2210 | goto out; | |
2211 | } | |
2212 | ||
2213 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
2214 | pg_id, alua_state); | |
2215 | if (ret) { | |
2216 | pr_err("Invalid target descriptor %d:%c " | |
2217 | "at line %d\n", | |
2218 | pg_id, state, num); | |
2219 | break; | |
2220 | } | |
2221 | pg++; | |
2222 | ptr = strchr(ptr, ' '); | |
2223 | if (ptr) | |
2224 | ptr++; | |
2225 | else | |
2226 | break; | |
2227 | } | |
2228 | if (pg_num == -1) | |
2229 | pg_num = pg; | |
2230 | else if (pg != pg_num) { | |
2231 | pr_err("Only %d from %d port groups definitions " | |
2232 | "at line %d\n", pg, pg_num, num); | |
2233 | ret = -EINVAL; | |
2234 | break; | |
2235 | } | |
2236 | num++; | |
2237 | } | |
2238 | out: | |
2239 | if (ret) { | |
2240 | core_alua_free_lba_map(&lba_list); | |
2241 | count = ret; | |
2242 | } else | |
2243 | core_alua_set_lba_map(dev, &lba_list, | |
2244 | segment_size, segment_mult); | |
2245 | kfree(map_entries); | |
2246 | return count; | |
2247 | } | |
2248 | ||
2249 | static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { | |
2250 | .attr = { .ca_owner = THIS_MODULE, | |
2251 | .ca_name = "lba_map", | |
2252 | .ca_mode = S_IRUGO | S_IWUSR }, | |
2253 | .show = target_core_show_dev_lba_map, | |
2254 | .store = target_core_store_dev_lba_map, | |
2255 | }; | |
2256 | ||
73112edc | 2257 | static struct configfs_attribute *target_core_dev_attrs[] = { |
c66ac9db NB |
2258 | &target_core_attr_dev_info.attr, |
2259 | &target_core_attr_dev_control.attr, | |
2260 | &target_core_attr_dev_alias.attr, | |
2261 | &target_core_attr_dev_udev_path.attr, | |
2262 | &target_core_attr_dev_enable.attr, | |
2263 | &target_core_attr_dev_alua_lu_gp.attr, | |
229d4f11 | 2264 | &target_core_attr_dev_lba_map.attr, |
c66ac9db NB |
2265 | NULL, |
2266 | }; | |
2267 | ||
2268 | static void target_core_dev_release(struct config_item *item) | |
2269 | { | |
0fd97ccf CH |
2270 | struct config_group *dev_cg = to_config_group(item); |
2271 | struct se_device *dev = | |
2272 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2273 | |
c66ac9db | 2274 | kfree(dev_cg->default_groups); |
0fd97ccf | 2275 | target_free_device(dev); |
c66ac9db NB |
2276 | } |
2277 | ||
2278 | static ssize_t target_core_dev_show(struct config_item *item, | |
2279 | struct configfs_attribute *attr, | |
2280 | char *page) | |
2281 | { | |
0fd97ccf CH |
2282 | struct config_group *dev_cg = to_config_group(item); |
2283 | struct se_device *dev = | |
2284 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
2285 | struct target_core_configfs_attribute *tc_attr = container_of( |
2286 | attr, struct target_core_configfs_attribute, attr); | |
2287 | ||
6708bb27 | 2288 | if (!tc_attr->show) |
c66ac9db NB |
2289 | return -EINVAL; |
2290 | ||
0fd97ccf | 2291 | return tc_attr->show(dev, page); |
c66ac9db NB |
2292 | } |
2293 | ||
2294 | static ssize_t target_core_dev_store(struct config_item *item, | |
2295 | struct configfs_attribute *attr, | |
2296 | const char *page, size_t count) | |
2297 | { | |
0fd97ccf CH |
2298 | struct config_group *dev_cg = to_config_group(item); |
2299 | struct se_device *dev = | |
2300 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
2301 | struct target_core_configfs_attribute *tc_attr = container_of( |
2302 | attr, struct target_core_configfs_attribute, attr); | |
2303 | ||
6708bb27 | 2304 | if (!tc_attr->store) |
c66ac9db NB |
2305 | return -EINVAL; |
2306 | ||
0fd97ccf | 2307 | return tc_attr->store(dev, page, count); |
c66ac9db NB |
2308 | } |
2309 | ||
2310 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2311 | .release = target_core_dev_release, | |
2312 | .show_attribute = target_core_dev_show, | |
2313 | .store_attribute = target_core_dev_store, | |
2314 | }; | |
2315 | ||
73112edc | 2316 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 2317 | |
73112edc | 2318 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
2319 | |
2320 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2321 | ||
2322 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2323 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2324 | static struct target_core_alua_lu_gp_attribute \ | |
2325 | target_core_alua_lu_gp_##_name = \ | |
2326 | __CONFIGFS_EATTR(_name, _mode, \ | |
2327 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2328 | target_core_alua_lu_gp_store_attr_##_name); | |
2329 | ||
2330 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2331 | static struct target_core_alua_lu_gp_attribute \ | |
2332 | target_core_alua_lu_gp_##_name = \ | |
2333 | __CONFIGFS_EATTR_RO(_name, \ | |
2334 | target_core_alua_lu_gp_show_attr_##_name); | |
2335 | ||
2336 | /* | |
2337 | * lu_gp_id | |
2338 | */ | |
2339 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2340 | struct t10_alua_lu_gp *lu_gp, | |
2341 | char *page) | |
2342 | { | |
6708bb27 | 2343 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
2344 | return 0; |
2345 | ||
2346 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2347 | } | |
2348 | ||
2349 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2350 | struct t10_alua_lu_gp *lu_gp, | |
2351 | const char *page, | |
2352 | size_t count) | |
2353 | { | |
2354 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2355 | unsigned long lu_gp_id; | |
2356 | int ret; | |
2357 | ||
57103d7f | 2358 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 2359 | if (ret < 0) { |
57103d7f | 2360 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2361 | " lu_gp_id\n", ret); |
57103d7f | 2362 | return ret; |
c66ac9db NB |
2363 | } |
2364 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2365 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2366 | " 0x0000ffff\n", lu_gp_id); |
2367 | return -EINVAL; | |
2368 | } | |
2369 | ||
2370 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2371 | if (ret < 0) | |
2372 | return -EINVAL; | |
2373 | ||
6708bb27 | 2374 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2375 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2376 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2377 | lu_gp->lu_gp_id); | |
2378 | ||
2379 | return count; | |
2380 | } | |
2381 | ||
2382 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2383 | ||
2384 | /* | |
2385 | * members | |
2386 | */ | |
2387 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2388 | struct t10_alua_lu_gp *lu_gp, | |
2389 | char *page) | |
2390 | { | |
2391 | struct se_device *dev; | |
2392 | struct se_hba *hba; | |
c66ac9db NB |
2393 | struct t10_alua_lu_gp_member *lu_gp_mem; |
2394 | ssize_t len = 0, cur_len; | |
2395 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2396 | ||
2397 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2398 | ||
2399 | spin_lock(&lu_gp->lu_gp_lock); | |
2400 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2401 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 2402 | hba = dev->se_hba; |
c66ac9db NB |
2403 | |
2404 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2405 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2406 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
2407 | cur_len++; /* Extra byte for NULL terminator */ |
2408 | ||
2409 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2410 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2411 | "_members buffer\n"); |
2412 | break; | |
2413 | } | |
2414 | memcpy(page+len, buf, cur_len); | |
2415 | len += cur_len; | |
2416 | } | |
2417 | spin_unlock(&lu_gp->lu_gp_lock); | |
2418 | ||
2419 | return len; | |
2420 | } | |
2421 | ||
2422 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2423 | ||
2424 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2425 | ||
2426 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2427 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2428 | &target_core_alua_lu_gp_members.attr, | |
2429 | NULL, | |
2430 | }; | |
2431 | ||
1f6fe7cb NB |
2432 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2433 | { | |
2434 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2435 | struct t10_alua_lu_gp, lu_gp_group); | |
2436 | ||
2437 | core_alua_free_lu_gp(lu_gp); | |
2438 | } | |
2439 | ||
c66ac9db | 2440 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2441 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2442 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2443 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2444 | }; | |
2445 | ||
2446 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2447 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2448 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2449 | .ct_owner = THIS_MODULE, | |
2450 | }; | |
2451 | ||
2452 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2453 | ||
2454 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2455 | ||
2456 | static struct config_group *target_core_alua_create_lu_gp( | |
2457 | struct config_group *group, | |
2458 | const char *name) | |
2459 | { | |
2460 | struct t10_alua_lu_gp *lu_gp; | |
2461 | struct config_group *alua_lu_gp_cg = NULL; | |
2462 | struct config_item *alua_lu_gp_ci = NULL; | |
2463 | ||
2464 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2465 | if (IS_ERR(lu_gp)) | |
2466 | return NULL; | |
2467 | ||
2468 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2469 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2470 | ||
2471 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2472 | &target_core_alua_lu_gp_cit); | |
2473 | ||
6708bb27 | 2474 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2475 | " Group: core/alua/lu_gps/%s\n", |
2476 | config_item_name(alua_lu_gp_ci)); | |
2477 | ||
2478 | return alua_lu_gp_cg; | |
2479 | ||
2480 | } | |
2481 | ||
2482 | static void target_core_alua_drop_lu_gp( | |
2483 | struct config_group *group, | |
2484 | struct config_item *item) | |
2485 | { | |
2486 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2487 | struct t10_alua_lu_gp, lu_gp_group); | |
2488 | ||
6708bb27 | 2489 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2490 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2491 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2492 | /* |
2493 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2494 | * -> target_core_alua_lu_gp_release() | |
2495 | */ | |
c66ac9db | 2496 | config_item_put(item); |
c66ac9db NB |
2497 | } |
2498 | ||
2499 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2500 | .make_group = &target_core_alua_create_lu_gp, | |
2501 | .drop_item = &target_core_alua_drop_lu_gp, | |
2502 | }; | |
2503 | ||
2504 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2505 | .ct_item_ops = NULL, | |
2506 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2507 | .ct_owner = THIS_MODULE, | |
2508 | }; | |
2509 | ||
2510 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2511 | ||
2512 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2513 | ||
2514 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2515 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2516 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2517 | target_core_alua_tg_pt_gp_##_name = \ | |
2518 | __CONFIGFS_EATTR(_name, _mode, \ | |
2519 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2520 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2521 | ||
2522 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2523 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2524 | target_core_alua_tg_pt_gp_##_name = \ | |
2525 | __CONFIGFS_EATTR_RO(_name, \ | |
2526 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2527 | ||
2528 | /* | |
2529 | * alua_access_state | |
2530 | */ | |
2531 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2532 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2533 | char *page) | |
2534 | { | |
2535 | return sprintf(page, "%d\n", | |
2536 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2537 | } | |
2538 | ||
2539 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2540 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2541 | const char *page, | |
2542 | size_t count) | |
2543 | { | |
0fd97ccf | 2544 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2545 | unsigned long tmp; |
2546 | int new_state, ret; | |
2547 | ||
6708bb27 | 2548 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2549 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2550 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2551 | return -EINVAL; | |
2552 | } | |
f1453773 NB |
2553 | if (!(dev->dev_flags & DF_CONFIGURED)) { |
2554 | pr_err("Unable to set alua_access_state while device is" | |
2555 | " not configured\n"); | |
2556 | return -ENODEV; | |
2557 | } | |
c66ac9db | 2558 | |
57103d7f | 2559 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2560 | if (ret < 0) { |
6708bb27 | 2561 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2562 | " %s\n", page); |
57103d7f | 2563 | return ret; |
c66ac9db NB |
2564 | } |
2565 | new_state = (int)tmp; | |
2566 | ||
125d0119 HR |
2567 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2568 | pr_err("Unable to process implicit configfs ALUA" | |
2569 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2570 | return -EINVAL; |
2571 | } | |
c66094bf HR |
2572 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
2573 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
2574 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
2575 | pr_err("Unable to process implicit configfs ALUA transition" | |
2576 | " while explicit ALUA management is enabled\n"); | |
2577 | return -EINVAL; | |
2578 | } | |
c66ac9db | 2579 | |
0fd97ccf | 2580 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2581 | NULL, NULL, new_state, 0); |
2582 | return (!ret) ? count : -EINVAL; | |
2583 | } | |
2584 | ||
2585 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2586 | ||
2587 | /* | |
2588 | * alua_access_status | |
2589 | */ | |
2590 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2591 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2592 | char *page) | |
2593 | { | |
2594 | return sprintf(page, "%s\n", | |
2595 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2596 | } | |
2597 | ||
2598 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2599 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2600 | const char *page, | |
2601 | size_t count) | |
2602 | { | |
2603 | unsigned long tmp; | |
2604 | int new_status, ret; | |
2605 | ||
6708bb27 AG |
2606 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2607 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2608 | " valid tg_pt_gp ID: %hu\n", |
2609 | tg_pt_gp->tg_pt_gp_valid_id); | |
2610 | return -EINVAL; | |
2611 | } | |
2612 | ||
57103d7f | 2613 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2614 | if (ret < 0) { |
6708bb27 | 2615 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2616 | " from %s\n", page); |
57103d7f | 2617 | return ret; |
c66ac9db NB |
2618 | } |
2619 | new_status = (int)tmp; | |
2620 | ||
2621 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2622 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2623 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2624 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2625 | new_status); |
2626 | return -EINVAL; | |
2627 | } | |
2628 | ||
2629 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2630 | return count; | |
2631 | } | |
2632 | ||
2633 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2634 | ||
2635 | /* | |
2636 | * alua_access_type | |
2637 | */ | |
2638 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2639 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2640 | char *page) | |
2641 | { | |
2642 | return core_alua_show_access_type(tg_pt_gp, page); | |
2643 | } | |
2644 | ||
2645 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2646 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2647 | const char *page, | |
2648 | size_t count) | |
2649 | { | |
2650 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2651 | } | |
2652 | ||
2653 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2654 | ||
6be526c4 HR |
2655 | /* |
2656 | * alua_supported_states | |
2657 | */ | |
6be526c4 | 2658 | |
b0a382c5 HR |
2659 | #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ |
2660 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ | |
2661 | struct t10_alua_tg_pt_gp *t, char *p) \ | |
2662 | { \ | |
2663 | return sprintf(p, "%d\n", !!(t->_var & _bit)); \ | |
6be526c4 HR |
2664 | } |
2665 | ||
b0a382c5 HR |
2666 | #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ |
2667 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ | |
2668 | struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ | |
2669 | { \ | |
2670 | unsigned long tmp; \ | |
2671 | int ret; \ | |
2672 | \ | |
2673 | if (!t->tg_pt_gp_valid_id) { \ | |
2674 | pr_err("Unable to do set ##_name ALUA state on non" \ | |
2675 | " valid tg_pt_gp ID: %hu\n", \ | |
2676 | t->tg_pt_gp_valid_id); \ | |
2677 | return -EINVAL; \ | |
2678 | } \ | |
2679 | \ | |
2680 | ret = kstrtoul(p, 0, &tmp); \ | |
2681 | if (ret < 0) { \ | |
2682 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2683 | return -EINVAL; \ | |
2684 | } \ | |
2685 | if (tmp > 1) { \ | |
2686 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2687 | return -EINVAL; \ | |
2688 | } \ | |
1f0b030c | 2689 | if (tmp) \ |
b0a382c5 HR |
2690 | t->_var |= _bit; \ |
2691 | else \ | |
2692 | t->_var &= ~_bit; \ | |
2693 | \ | |
2694 | return c; \ | |
2695 | } | |
2696 | ||
2697 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, | |
2698 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2699 | SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, | |
2700 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2701 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); | |
2702 | ||
2703 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, | |
2704 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2705 | SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, | |
2706 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2707 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); | |
2708 | ||
2709 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, | |
2710 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
2711 | SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, | |
2712 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
c66094bf | 2713 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); |
b0a382c5 HR |
2714 | |
2715 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, | |
2716 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2717 | SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, | |
2718 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2719 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); | |
2720 | ||
2721 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, | |
2722 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2723 | SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, | |
2724 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2725 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); | |
2726 | ||
2727 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, | |
2728 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2729 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, | |
2730 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2731 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); | |
2732 | ||
2733 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, | |
2734 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2735 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, | |
2736 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2737 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); | |
6be526c4 | 2738 | |
c66ac9db NB |
2739 | /* |
2740 | * alua_write_metadata | |
2741 | */ | |
2742 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2743 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2744 | char *page) | |
2745 | { | |
2746 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2747 | } | |
2748 | ||
2749 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2750 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2751 | const char *page, | |
2752 | size_t count) | |
2753 | { | |
2754 | unsigned long tmp; | |
2755 | int ret; | |
2756 | ||
57103d7f | 2757 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2758 | if (ret < 0) { |
6708bb27 | 2759 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2760 | return ret; |
c66ac9db NB |
2761 | } |
2762 | ||
2763 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2764 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2765 | " %lu\n", tmp); |
2766 | return -EINVAL; | |
2767 | } | |
2768 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2769 | ||
2770 | return count; | |
2771 | } | |
2772 | ||
2773 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2774 | ||
2775 | ||
2776 | ||
2777 | /* | |
2778 | * nonop_delay_msecs | |
2779 | */ | |
2780 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2781 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2782 | char *page) | |
2783 | { | |
2784 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2785 | ||
2786 | } | |
2787 | ||
2788 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2789 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2790 | const char *page, | |
2791 | size_t count) | |
2792 | { | |
2793 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2794 | } | |
2795 | ||
2796 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2797 | ||
2798 | /* | |
2799 | * trans_delay_msecs | |
2800 | */ | |
2801 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2802 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2803 | char *page) | |
2804 | { | |
2805 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2806 | } | |
2807 | ||
2808 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2809 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2810 | const char *page, | |
2811 | size_t count) | |
2812 | { | |
2813 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2814 | } | |
2815 | ||
2816 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2817 | ||
5b9a4d72 | 2818 | /* |
125d0119 | 2819 | * implicit_trans_secs |
5b9a4d72 | 2820 | */ |
125d0119 | 2821 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( |
5b9a4d72 NB |
2822 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2823 | char *page) | |
2824 | { | |
125d0119 | 2825 | return core_alua_show_implicit_trans_secs(tg_pt_gp, page); |
5b9a4d72 NB |
2826 | } |
2827 | ||
125d0119 | 2828 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( |
5b9a4d72 NB |
2829 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2830 | const char *page, | |
2831 | size_t count) | |
2832 | { | |
125d0119 | 2833 | return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); |
5b9a4d72 NB |
2834 | } |
2835 | ||
125d0119 | 2836 | SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); |
5b9a4d72 | 2837 | |
c66ac9db NB |
2838 | /* |
2839 | * preferred | |
2840 | */ | |
2841 | ||
2842 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2843 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2844 | char *page) | |
2845 | { | |
2846 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2847 | } | |
2848 | ||
2849 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2850 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2851 | const char *page, | |
2852 | size_t count) | |
2853 | { | |
2854 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2855 | } | |
2856 | ||
2857 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2858 | ||
2859 | /* | |
2860 | * tg_pt_gp_id | |
2861 | */ | |
2862 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2863 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2864 | char *page) | |
2865 | { | |
6708bb27 | 2866 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2867 | return 0; |
2868 | ||
2869 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2870 | } | |
2871 | ||
2872 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2873 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2874 | const char *page, | |
2875 | size_t count) | |
2876 | { | |
2877 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2878 | unsigned long tg_pt_gp_id; | |
2879 | int ret; | |
2880 | ||
57103d7f | 2881 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2882 | if (ret < 0) { |
57103d7f | 2883 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2884 | " tg_pt_gp_id\n", ret); |
57103d7f | 2885 | return ret; |
c66ac9db NB |
2886 | } |
2887 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2888 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2889 | " 0x0000ffff\n", tg_pt_gp_id); |
2890 | return -EINVAL; | |
2891 | } | |
2892 | ||
2893 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2894 | if (ret < 0) | |
2895 | return -EINVAL; | |
2896 | ||
6708bb27 | 2897 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2898 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2899 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2900 | tg_pt_gp->tg_pt_gp_id); | |
2901 | ||
2902 | return count; | |
2903 | } | |
2904 | ||
2905 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2906 | ||
2907 | /* | |
2908 | * members | |
2909 | */ | |
2910 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2911 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2912 | char *page) | |
2913 | { | |
c66ac9db | 2914 | struct se_lun *lun; |
c66ac9db NB |
2915 | ssize_t len = 0, cur_len; |
2916 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2917 | ||
2918 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2919 | ||
2920 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
adf653f9 CH |
2921 | list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, |
2922 | lun_tg_pt_gp_link) { | |
2923 | struct se_portal_group *tpg = lun->lun_tpg; | |
c66ac9db NB |
2924 | |
2925 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2926 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2927 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2928 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2929 | config_item_name(&lun->lun_group.cg_item)); |
2930 | cur_len++; /* Extra byte for NULL terminator */ | |
2931 | ||
2932 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2933 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2934 | "_members buffer\n"); |
2935 | break; | |
2936 | } | |
2937 | memcpy(page+len, buf, cur_len); | |
2938 | len += cur_len; | |
2939 | } | |
2940 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2941 | ||
2942 | return len; | |
2943 | } | |
2944 | ||
2945 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2946 | ||
2947 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2948 | tg_pt_gp_group); | |
2949 | ||
2950 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2951 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2952 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2953 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
b0a382c5 HR |
2954 | &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, |
2955 | &target_core_alua_tg_pt_gp_alua_support_offline.attr, | |
2956 | &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, | |
2957 | &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, | |
2958 | &target_core_alua_tg_pt_gp_alua_support_standby.attr, | |
2959 | &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, | |
2960 | &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, | |
c66ac9db NB |
2961 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, |
2962 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2963 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
125d0119 | 2964 | &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, |
c66ac9db NB |
2965 | &target_core_alua_tg_pt_gp_preferred.attr, |
2966 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2967 | &target_core_alua_tg_pt_gp_members.attr, | |
2968 | NULL, | |
2969 | }; | |
2970 | ||
1f6fe7cb NB |
2971 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2972 | { | |
2973 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2974 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2975 | ||
2976 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2977 | } | |
2978 | ||
c66ac9db | 2979 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2980 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2981 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2982 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2983 | }; | |
2984 | ||
2985 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2986 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2987 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2988 | .ct_owner = THIS_MODULE, | |
2989 | }; | |
2990 | ||
2991 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2992 | ||
72aca57b | 2993 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2994 | |
2995 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2996 | struct config_group *group, | |
2997 | const char *name) | |
2998 | { | |
2999 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
3000 | alua_tg_pt_gps_group); | |
3001 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
3002 | struct config_group *alua_tg_pt_gp_cg = NULL; |
3003 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
3004 | ||
0fd97ccf | 3005 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 3006 | if (!tg_pt_gp) |
c66ac9db NB |
3007 | return NULL; |
3008 | ||
3009 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
3010 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
3011 | ||
3012 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
3013 | &target_core_alua_tg_pt_gp_cit); | |
3014 | ||
6708bb27 | 3015 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
3016 | " Group: alua/tg_pt_gps/%s\n", |
3017 | config_item_name(alua_tg_pt_gp_ci)); | |
3018 | ||
3019 | return alua_tg_pt_gp_cg; | |
3020 | } | |
3021 | ||
3022 | static void target_core_alua_drop_tg_pt_gp( | |
3023 | struct config_group *group, | |
3024 | struct config_item *item) | |
3025 | { | |
3026 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
3027 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
3028 | ||
6708bb27 | 3029 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
3030 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
3031 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
3032 | /* |
3033 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
3034 | * -> target_core_alua_tg_pt_gp_release(). | |
3035 | */ | |
c66ac9db | 3036 | config_item_put(item); |
c66ac9db NB |
3037 | } |
3038 | ||
3039 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
3040 | .make_group = &target_core_alua_create_tg_pt_gp, | |
3041 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
3042 | }; | |
3043 | ||
72aca57b | 3044 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 3045 | |
72aca57b | 3046 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
3047 | |
3048 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
3049 | ||
3050 | /* | |
3051 | * target_core_alua_cit is a ConfigFS group that lives under | |
3052 | * /sys/kernel/config/target/core/alua. There are default groups | |
3053 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
3054 | * target_core_alua_cit in target_core_init_configfs() below. | |
3055 | */ | |
3056 | static struct config_item_type target_core_alua_cit = { | |
3057 | .ct_item_ops = NULL, | |
3058 | .ct_attrs = NULL, | |
3059 | .ct_owner = THIS_MODULE, | |
3060 | }; | |
3061 | ||
3062 | /* End functions for struct config_item_type target_core_alua_cit */ | |
3063 | ||
d23ab570 | 3064 | /* Start functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 NB |
3065 | |
3066 | static struct config_group *target_core_stat_mkdir( | |
3067 | struct config_group *group, | |
3068 | const char *name) | |
3069 | { | |
3070 | return ERR_PTR(-ENOSYS); | |
3071 | } | |
3072 | ||
3073 | static void target_core_stat_rmdir( | |
3074 | struct config_group *group, | |
3075 | struct config_item *item) | |
3076 | { | |
3077 | return; | |
3078 | } | |
3079 | ||
3080 | static struct configfs_group_operations target_core_stat_group_ops = { | |
3081 | .make_group = &target_core_stat_mkdir, | |
3082 | .drop_item = &target_core_stat_rmdir, | |
3083 | }; | |
3084 | ||
d23ab570 | 3085 | TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); |
12d23384 | 3086 | |
d23ab570 | 3087 | /* End functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 | 3088 | |
c66ac9db NB |
3089 | /* Start functions for struct config_item_type target_core_hba_cit */ |
3090 | ||
3091 | static struct config_group *target_core_make_subdev( | |
3092 | struct config_group *group, | |
3093 | const char *name) | |
3094 | { | |
3095 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
3096 | struct config_item *hba_ci = &group->cg_item; |
3097 | struct se_hba *hba = item_to_hba(hba_ci); | |
0a06d430 | 3098 | struct target_backend *tb = hba->backend; |
0fd97ccf | 3099 | struct se_device *dev; |
c66ac9db | 3100 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
3101 | struct config_group *dev_stat_grp = NULL; |
3102 | int errno = -ENOMEM, ret; | |
c66ac9db | 3103 | |
12d23384 NB |
3104 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
3105 | if (ret) | |
3106 | return ERR_PTR(ret); | |
c66ac9db | 3107 | |
0fd97ccf CH |
3108 | dev = target_alloc_device(hba, name); |
3109 | if (!dev) | |
3110 | goto out_unlock; | |
3111 | ||
3112 | dev_cg = &dev->dev_group; | |
c66ac9db | 3113 | |
13f6a914 | 3114 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
c66ac9db | 3115 | GFP_KERNEL); |
6708bb27 | 3116 | if (!dev_cg->default_groups) |
0fd97ccf | 3117 | goto out_free_device; |
c66ac9db | 3118 | |
0a06d430 | 3119 | config_group_init_type_name(dev_cg, name, &tb->tb_dev_cit); |
0fd97ccf | 3120 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
0a06d430 | 3121 | &tb->tb_dev_attrib_cit); |
0fd97ccf | 3122 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
0a06d430 | 3123 | &tb->tb_dev_pr_cit); |
0fd97ccf | 3124 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
0a06d430 | 3125 | &tb->tb_dev_wwn_cit); |
0fd97ccf | 3126 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
0a06d430 | 3127 | "alua", &tb->tb_dev_alua_tg_pt_gps_cit); |
0fd97ccf | 3128 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
0a06d430 | 3129 | "statistics", &tb->tb_dev_stat_cit); |
12d23384 | 3130 | |
0fd97ccf CH |
3131 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
3132 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
3133 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
3134 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
3135 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 3136 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 3137 | /* |
12d23384 | 3138 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 3139 | */ |
0fd97ccf | 3140 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 3141 | if (!tg_pt_gp) |
0fd97ccf CH |
3142 | goto out_free_dev_cg_default_groups; |
3143 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 3144 | |
0fd97ccf | 3145 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
13f6a914 | 3146 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3147 | GFP_KERNEL); |
6708bb27 AG |
3148 | if (!tg_pt_gp_cg->default_groups) { |
3149 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 3150 | "default_groups\n"); |
0fd97ccf | 3151 | goto out_free_tg_pt_gp; |
c66ac9db NB |
3152 | } |
3153 | ||
3154 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
3155 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
3156 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
3157 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
3158 | /* |
3159 | * Add core/$HBA/$DEV/statistics/ default groups | |
3160 | */ | |
0fd97ccf | 3161 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
13f6a914 | 3162 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
12d23384 NB |
3163 | GFP_KERNEL); |
3164 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 3165 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 3166 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 3167 | } |
0fd97ccf | 3168 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
3169 | |
3170 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
3171 | return dev_cg; |
3172 | ||
3173 | out_free_tg_pt_gp_cg_default_groups: | |
3174 | kfree(tg_pt_gp_cg->default_groups); | |
3175 | out_free_tg_pt_gp: | |
3176 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
3177 | out_free_dev_cg_default_groups: | |
3178 | kfree(dev_cg->default_groups); | |
3179 | out_free_device: | |
3180 | target_free_device(dev); | |
3181 | out_unlock: | |
c66ac9db | 3182 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 3183 | return ERR_PTR(errno); |
c66ac9db NB |
3184 | } |
3185 | ||
3186 | static void target_core_drop_subdev( | |
3187 | struct config_group *group, | |
3188 | struct config_item *item) | |
3189 | { | |
0fd97ccf CH |
3190 | struct config_group *dev_cg = to_config_group(item); |
3191 | struct se_device *dev = | |
3192 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 3193 | struct se_hba *hba; |
c66ac9db | 3194 | struct config_item *df_item; |
0fd97ccf | 3195 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 3196 | int i; |
c66ac9db | 3197 | |
0fd97ccf | 3198 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 3199 | |
1f6fe7cb | 3200 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 3201 | |
0fd97ccf | 3202 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
3203 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
3204 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
3205 | dev_stat_grp->default_groups[i] = NULL; | |
3206 | config_item_put(df_item); | |
3207 | } | |
3208 | kfree(dev_stat_grp->default_groups); | |
3209 | ||
0fd97ccf | 3210 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
3211 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
3212 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
3213 | tg_pt_gp_cg->default_groups[i] = NULL; | |
3214 | config_item_put(df_item); | |
3215 | } | |
3216 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
3217 | /* |
3218 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
3219 | * directly from target_core_alua_tg_pt_gp_release(). | |
3220 | */ | |
0fd97ccf | 3221 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 3222 | |
c66ac9db NB |
3223 | for (i = 0; dev_cg->default_groups[i]; i++) { |
3224 | df_item = &dev_cg->default_groups[i]->cg_item; | |
3225 | dev_cg->default_groups[i] = NULL; | |
3226 | config_item_put(df_item); | |
3227 | } | |
c66ac9db | 3228 | /* |
0fd97ccf | 3229 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 3230 | */ |
1f6fe7cb | 3231 | config_item_put(item); |
c66ac9db | 3232 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
3233 | } |
3234 | ||
3235 | static struct configfs_group_operations target_core_hba_group_ops = { | |
3236 | .make_group = target_core_make_subdev, | |
3237 | .drop_item = target_core_drop_subdev, | |
3238 | }; | |
3239 | ||
3240 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
3241 | #define SE_HBA_ATTR(_name, _mode) \ | |
3242 | static struct target_core_hba_attribute \ | |
3243 | target_core_hba_##_name = \ | |
3244 | __CONFIGFS_EATTR(_name, _mode, \ | |
3245 | target_core_hba_show_attr_##_name, \ | |
3246 | target_core_hba_store_attr_##_name); | |
3247 | ||
3248 | #define SE_HBA_ATTR_RO(_name) \ | |
3249 | static struct target_core_hba_attribute \ | |
3250 | target_core_hba_##_name = \ | |
3251 | __CONFIGFS_EATTR_RO(_name, \ | |
3252 | target_core_hba_show_attr_##_name); | |
3253 | ||
3254 | static ssize_t target_core_hba_show_attr_hba_info( | |
3255 | struct se_hba *hba, | |
3256 | char *page) | |
3257 | { | |
3258 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
0a06d430 | 3259 | hba->hba_id, hba->backend->ops->name, |
ce8dd25d | 3260 | TARGET_CORE_VERSION); |
c66ac9db NB |
3261 | } |
3262 | ||
3263 | SE_HBA_ATTR_RO(hba_info); | |
3264 | ||
3265 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
3266 | char *page) | |
3267 | { | |
3268 | int hba_mode = 0; | |
3269 | ||
3270 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
3271 | hba_mode = 1; | |
3272 | ||
3273 | return sprintf(page, "%d\n", hba_mode); | |
3274 | } | |
3275 | ||
3276 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
3277 | const char *page, size_t count) | |
3278 | { | |
c66ac9db NB |
3279 | unsigned long mode_flag; |
3280 | int ret; | |
3281 | ||
0a06d430 | 3282 | if (hba->backend->ops->pmode_enable_hba == NULL) |
c66ac9db NB |
3283 | return -EINVAL; |
3284 | ||
57103d7f | 3285 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 3286 | if (ret < 0) { |
6708bb27 | 3287 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 3288 | return ret; |
c66ac9db NB |
3289 | } |
3290 | ||
0fd97ccf | 3291 | if (hba->dev_count) { |
6708bb27 | 3292 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
3293 | return -EINVAL; |
3294 | } | |
c66ac9db | 3295 | |
0a06d430 | 3296 | ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); |
c66ac9db NB |
3297 | if (ret < 0) |
3298 | return -EINVAL; | |
3299 | if (ret > 0) | |
3300 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
3301 | else if (ret == 0) | |
3302 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
3303 | ||
3304 | return count; | |
3305 | } | |
3306 | ||
3307 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
3308 | ||
3309 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
3310 | ||
1f6fe7cb NB |
3311 | static void target_core_hba_release(struct config_item *item) |
3312 | { | |
3313 | struct se_hba *hba = container_of(to_config_group(item), | |
3314 | struct se_hba, hba_group); | |
3315 | core_delete_hba(hba); | |
3316 | } | |
3317 | ||
c66ac9db NB |
3318 | static struct configfs_attribute *target_core_hba_attrs[] = { |
3319 | &target_core_hba_hba_info.attr, | |
3320 | &target_core_hba_hba_mode.attr, | |
3321 | NULL, | |
3322 | }; | |
3323 | ||
3324 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3325 | .release = target_core_hba_release, |
c66ac9db NB |
3326 | .show_attribute = target_core_hba_attr_show, |
3327 | .store_attribute = target_core_hba_attr_store, | |
3328 | }; | |
3329 | ||
3330 | static struct config_item_type target_core_hba_cit = { | |
3331 | .ct_item_ops = &target_core_hba_item_ops, | |
3332 | .ct_group_ops = &target_core_hba_group_ops, | |
3333 | .ct_attrs = target_core_hba_attrs, | |
3334 | .ct_owner = THIS_MODULE, | |
3335 | }; | |
3336 | ||
3337 | static struct config_group *target_core_call_addhbatotarget( | |
3338 | struct config_group *group, | |
3339 | const char *name) | |
3340 | { | |
3341 | char *se_plugin_str, *str, *str2; | |
3342 | struct se_hba *hba; | |
3343 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3344 | unsigned long plugin_dep_id = 0; | |
3345 | int ret; | |
3346 | ||
3347 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3348 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3349 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3350 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3351 | TARGET_CORE_NAME_MAX_LEN); | |
3352 | return ERR_PTR(-ENAMETOOLONG); | |
3353 | } | |
3354 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3355 | ||
3356 | str = strstr(buf, "_"); | |
6708bb27 AG |
3357 | if (!str) { |
3358 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3359 | return ERR_PTR(-EINVAL); |
3360 | } | |
3361 | se_plugin_str = buf; | |
3362 | /* | |
3363 | * Special case for subsystem plugins that have "_" in their names. | |
3364 | * Namely rd_direct and rd_mcp.. | |
3365 | */ | |
3366 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3367 | if (str2) { |
c66ac9db NB |
3368 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3369 | str2++; /* Skip to start of plugin dependent ID */ | |
3370 | str = str2; | |
3371 | } else { | |
3372 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3373 | str++; /* Skip to start of plugin dependent ID */ | |
3374 | } | |
3375 | ||
57103d7f | 3376 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 3377 | if (ret < 0) { |
57103d7f | 3378 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 3379 | " plugin_dep_id\n", ret); |
57103d7f | 3380 | return ERR_PTR(ret); |
c66ac9db NB |
3381 | } |
3382 | /* | |
3383 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3384 | */ | |
dbc5623e | 3385 | transport_subsystem_check_init(); |
c66ac9db NB |
3386 | |
3387 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3388 | if (IS_ERR(hba)) | |
3389 | return ERR_CAST(hba); | |
3390 | ||
3391 | config_group_init_type_name(&hba->hba_group, name, | |
3392 | &target_core_hba_cit); | |
3393 | ||
3394 | return &hba->hba_group; | |
3395 | } | |
3396 | ||
3397 | static void target_core_call_delhbafromtarget( | |
3398 | struct config_group *group, | |
3399 | struct config_item *item) | |
3400 | { | |
1f6fe7cb NB |
3401 | /* |
3402 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3403 | * -> target_core_hba_release() | |
3404 | */ | |
c66ac9db | 3405 | config_item_put(item); |
c66ac9db NB |
3406 | } |
3407 | ||
3408 | static struct configfs_group_operations target_core_group_ops = { | |
3409 | .make_group = target_core_call_addhbatotarget, | |
3410 | .drop_item = target_core_call_delhbafromtarget, | |
3411 | }; | |
3412 | ||
3413 | static struct config_item_type target_core_cit = { | |
3414 | .ct_item_ops = NULL, | |
3415 | .ct_group_ops = &target_core_group_ops, | |
3416 | .ct_attrs = NULL, | |
3417 | .ct_owner = THIS_MODULE, | |
3418 | }; | |
3419 | ||
3420 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3421 | ||
0a06d430 | 3422 | void target_setup_backend_cits(struct target_backend *tb) |
73112edc | 3423 | { |
0a06d430 CH |
3424 | target_core_setup_dev_cit(tb); |
3425 | target_core_setup_dev_attrib_cit(tb); | |
3426 | target_core_setup_dev_pr_cit(tb); | |
3427 | target_core_setup_dev_wwn_cit(tb); | |
3428 | target_core_setup_dev_alua_tg_pt_gps_cit(tb); | |
3429 | target_core_setup_dev_stat_cit(tb); | |
73112edc | 3430 | } |
73112edc | 3431 | |
54550fab | 3432 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3433 | { |
3434 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3435 | struct config_group *lu_gp_cg = NULL; | |
d588cf8f | 3436 | struct configfs_subsystem *subsys = &target_core_fabrics; |
c66ac9db NB |
3437 | struct t10_alua_lu_gp *lu_gp; |
3438 | int ret; | |
3439 | ||
6708bb27 | 3440 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3441 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3442 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3443 | ||
c66ac9db NB |
3444 | config_group_init(&subsys->su_group); |
3445 | mutex_init(&subsys->su_mutex); | |
3446 | ||
e3d6f909 | 3447 | ret = init_se_kmem_caches(); |
c66ac9db | 3448 | if (ret < 0) |
e3d6f909 | 3449 | return ret; |
c66ac9db NB |
3450 | /* |
3451 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3452 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3453 | */ | |
3454 | target_cg = &subsys->su_group; | |
ab6dae82 | 3455 | target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3456 | GFP_KERNEL); |
6708bb27 AG |
3457 | if (!target_cg->default_groups) { |
3458 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 3459 | ret = -ENOMEM; |
c66ac9db NB |
3460 | goto out_global; |
3461 | } | |
3462 | ||
e3d6f909 | 3463 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3464 | "core", &target_core_cit); |
e3d6f909 | 3465 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3466 | target_cg->default_groups[1] = NULL; |
3467 | /* | |
3468 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3469 | */ | |
e3d6f909 | 3470 | hba_cg = &target_core_hbagroup; |
13f6a914 | 3471 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3472 | GFP_KERNEL); |
6708bb27 AG |
3473 | if (!hba_cg->default_groups) { |
3474 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 3475 | ret = -ENOMEM; |
c66ac9db NB |
3476 | goto out_global; |
3477 | } | |
e3d6f909 | 3478 | config_group_init_type_name(&alua_group, |
c66ac9db | 3479 | "alua", &target_core_alua_cit); |
e3d6f909 | 3480 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3481 | hba_cg->default_groups[1] = NULL; |
3482 | /* | |
3483 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3484 | * groups under /sys/kernel/config/target/core/alua/ | |
3485 | */ | |
e3d6f909 | 3486 | alua_cg = &alua_group; |
13f6a914 | 3487 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3488 | GFP_KERNEL); |
6708bb27 AG |
3489 | if (!alua_cg->default_groups) { |
3490 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 3491 | ret = -ENOMEM; |
c66ac9db NB |
3492 | goto out_global; |
3493 | } | |
3494 | ||
e3d6f909 | 3495 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3496 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3497 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3498 | alua_cg->default_groups[1] = NULL; |
3499 | /* | |
3500 | * Add core/alua/lu_gps/default_lu_gp | |
3501 | */ | |
3502 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
3503 | if (IS_ERR(lu_gp)) { |
3504 | ret = -ENOMEM; | |
c66ac9db | 3505 | goto out_global; |
37bb7899 | 3506 | } |
c66ac9db | 3507 | |
e3d6f909 | 3508 | lu_gp_cg = &alua_lu_gps_group; |
13f6a914 | 3509 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3510 | GFP_KERNEL); |
6708bb27 AG |
3511 | if (!lu_gp_cg->default_groups) { |
3512 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 3513 | ret = -ENOMEM; |
c66ac9db NB |
3514 | goto out_global; |
3515 | } | |
3516 | ||
3517 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3518 | &target_core_alua_lu_gp_cit); | |
3519 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3520 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3521 | default_lu_gp = lu_gp; |
c66ac9db NB |
3522 | /* |
3523 | * Register the target_core_mod subsystem with configfs. | |
3524 | */ | |
3525 | ret = configfs_register_subsystem(subsys); | |
3526 | if (ret < 0) { | |
6708bb27 | 3527 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3528 | ret, subsys->su_group.cg_item.ci_namebuf); |
3529 | goto out_global; | |
3530 | } | |
6708bb27 | 3531 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
ce8dd25d | 3532 | " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" |
c66ac9db NB |
3533 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); |
3534 | /* | |
3535 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3536 | */ | |
3537 | ret = rd_module_init(); | |
3538 | if (ret < 0) | |
3539 | goto out; | |
3540 | ||
0d0f9dfb RD |
3541 | ret = core_dev_setup_virtual_lun0(); |
3542 | if (ret < 0) | |
c66ac9db NB |
3543 | goto out; |
3544 | ||
f99715ac NB |
3545 | ret = target_xcopy_setup_pt(); |
3546 | if (ret < 0) | |
3547 | goto out; | |
3548 | ||
c66ac9db NB |
3549 | return 0; |
3550 | ||
3551 | out: | |
3552 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3553 | core_dev_release_virtual_lun0(); |
3554 | rd_module_exit(); | |
3555 | out_global: | |
e3d6f909 AG |
3556 | if (default_lu_gp) { |
3557 | core_alua_free_lu_gp(default_lu_gp); | |
3558 | default_lu_gp = NULL; | |
c66ac9db NB |
3559 | } |
3560 | if (lu_gp_cg) | |
3561 | kfree(lu_gp_cg->default_groups); | |
3562 | if (alua_cg) | |
3563 | kfree(alua_cg->default_groups); | |
3564 | if (hba_cg) | |
3565 | kfree(hba_cg->default_groups); | |
3566 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3567 | release_se_kmem_caches(); |
3568 | return ret; | |
c66ac9db NB |
3569 | } |
3570 | ||
54550fab | 3571 | static void __exit target_core_exit_configfs(void) |
c66ac9db | 3572 | { |
c66ac9db NB |
3573 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; |
3574 | struct config_item *item; | |
3575 | int i; | |
3576 | ||
e3d6f909 | 3577 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3578 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3579 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3580 | lu_gp_cg->default_groups[i] = NULL; | |
3581 | config_item_put(item); | |
3582 | } | |
3583 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3584 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3585 | |
e3d6f909 | 3586 | alua_cg = &alua_group; |
c66ac9db NB |
3587 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3588 | item = &alua_cg->default_groups[i]->cg_item; | |
3589 | alua_cg->default_groups[i] = NULL; | |
3590 | config_item_put(item); | |
3591 | } | |
3592 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3593 | alua_cg->default_groups = NULL; |
c66ac9db | 3594 | |
e3d6f909 | 3595 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3596 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3597 | item = &hba_cg->default_groups[i]->cg_item; | |
3598 | hba_cg->default_groups[i] = NULL; | |
3599 | config_item_put(item); | |
3600 | } | |
3601 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3602 | hba_cg->default_groups = NULL; |
3603 | /* | |
3604 | * We expect subsys->su_group.default_groups to be released | |
3605 | * by configfs subsystem provider logic.. | |
3606 | */ | |
d588cf8f CH |
3607 | configfs_unregister_subsystem(&target_core_fabrics); |
3608 | kfree(target_core_fabrics.su_group.default_groups); | |
c66ac9db | 3609 | |
e3d6f909 AG |
3610 | core_alua_free_lu_gp(default_lu_gp); |
3611 | default_lu_gp = NULL; | |
7c2bf6e9 | 3612 | |
6708bb27 | 3613 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3614 | " Infrastructure\n"); |
3615 | ||
c66ac9db NB |
3616 | core_dev_release_virtual_lun0(); |
3617 | rd_module_exit(); | |
f99715ac | 3618 | target_xcopy_release_pt(); |
e3d6f909 | 3619 | release_se_kmem_caches(); |
c66ac9db NB |
3620 | } |
3621 | ||
3622 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3623 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3624 | MODULE_LICENSE("GPL"); | |
3625 | ||
3626 | module_init(target_core_init_configfs); | |
3627 | module_exit(target_core_exit_configfs); |