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