Commit | Line | Data |
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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_configfs.c | |
3 | * | |
4 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
5 | * | |
4c76251e | 6 | * (c) Copyright 2008-2013 Datera, Inc. |
c66ac9db NB |
7 | * |
8 | * Nicholas A. Bellinger <nab@kernel.org> | |
9 | * | |
10 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | ****************************************************************************/ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
c66ac9db NB |
25 | #include <generated/utsrelease.h> |
26 | #include <linux/utsname.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/fs.h> | |
29 | #include <linux/namei.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/unistd.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/parser.h> | |
36 | #include <linux/syscalls.h> | |
37 | #include <linux/configfs.h> | |
e3d6f909 | 38 | #include <linux/spinlock.h> |
c66ac9db NB |
39 | |
40 | #include <target/target_core_base.h> | |
c4795fb2 CH |
41 | #include <target/target_core_backend.h> |
42 | #include <target/target_core_fabric.h> | |
c66ac9db NB |
43 | #include <target/target_core_fabric_configfs.h> |
44 | #include <target/target_core_configfs.h> | |
45 | #include <target/configfs_macros.h> | |
46 | ||
e26d99ae | 47 | #include "target_core_internal.h" |
c66ac9db | 48 | #include "target_core_alua.h" |
c66ac9db NB |
49 | #include "target_core_pr.h" |
50 | #include "target_core_rd.h" | |
f99715ac | 51 | #include "target_core_xcopy.h" |
c66ac9db | 52 | |
73112edc NB |
53 | #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ |
54 | static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ | |
55 | { \ | |
56 | struct target_backend_cits *tbc = &sa->tb_cits; \ | |
57 | struct config_item_type *cit = &tbc->tb_##_name##_cit; \ | |
58 | \ | |
59 | cit->ct_item_ops = _item_ops; \ | |
60 | cit->ct_group_ops = _group_ops; \ | |
61 | cit->ct_attrs = _attrs; \ | |
62 | cit->ct_owner = sa->owner; \ | |
63 | pr_debug("Setup generic %s\n", __stringify(_name)); \ | |
64 | } | |
65 | ||
e3d6f909 AG |
66 | extern struct t10_alua_lu_gp *default_lu_gp; |
67 | ||
d0f474e5 RD |
68 | static LIST_HEAD(g_tf_list); |
69 | static DEFINE_MUTEX(g_tf_lock); | |
c66ac9db NB |
70 | |
71 | struct target_core_configfs_attribute { | |
72 | struct configfs_attribute attr; | |
73 | ssize_t (*show)(void *, char *); | |
74 | ssize_t (*store)(void *, const char *, size_t); | |
75 | }; | |
76 | ||
e3d6f909 AG |
77 | static struct config_group target_core_hbagroup; |
78 | static struct config_group alua_group; | |
79 | static struct config_group alua_lu_gps_group; | |
80 | ||
c66ac9db NB |
81 | static inline struct se_hba * |
82 | item_to_hba(struct config_item *item) | |
83 | { | |
84 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
85 | } | |
86 | ||
87 | /* | |
88 | * Attributes for /sys/kernel/config/target/ | |
89 | */ | |
90 | static ssize_t target_core_attr_show(struct config_item *item, | |
91 | struct configfs_attribute *attr, | |
92 | char *page) | |
93 | { | |
94 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
95 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
96 | utsname()->sysname, utsname()->machine); | |
97 | } | |
98 | ||
99 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
100 | .show_attribute = target_core_attr_show, | |
101 | }; | |
102 | ||
103 | static struct configfs_attribute target_core_item_attr_version = { | |
104 | .ca_owner = THIS_MODULE, | |
105 | .ca_name = "version", | |
106 | .ca_mode = S_IRUGO, | |
107 | }; | |
108 | ||
109 | static struct target_fabric_configfs *target_core_get_fabric( | |
110 | const char *name) | |
111 | { | |
112 | struct target_fabric_configfs *tf; | |
113 | ||
6708bb27 | 114 | if (!name) |
c66ac9db NB |
115 | return NULL; |
116 | ||
117 | mutex_lock(&g_tf_lock); | |
118 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
6708bb27 | 119 | if (!strcmp(tf->tf_name, name)) { |
c66ac9db NB |
120 | atomic_inc(&tf->tf_access_cnt); |
121 | mutex_unlock(&g_tf_lock); | |
122 | return tf; | |
123 | } | |
124 | } | |
125 | mutex_unlock(&g_tf_lock); | |
126 | ||
127 | return NULL; | |
128 | } | |
129 | ||
130 | /* | |
131 | * Called from struct target_core_group_ops->make_group() | |
132 | */ | |
133 | static struct config_group *target_core_register_fabric( | |
134 | struct config_group *group, | |
135 | const char *name) | |
136 | { | |
137 | struct target_fabric_configfs *tf; | |
138 | int ret; | |
139 | ||
6708bb27 | 140 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 141 | " %s\n", group, name); |
e7b7af6e RD |
142 | |
143 | tf = target_core_get_fabric(name); | |
144 | if (!tf) { | |
145 | pr_err("target_core_register_fabric() trying autoload for %s\n", | |
146 | name); | |
147 | ||
c66ac9db | 148 | /* |
e7b7af6e RD |
149 | * Below are some hardcoded request_module() calls to automatically |
150 | * local fabric modules when the following is called: | |
c66ac9db | 151 | * |
e7b7af6e | 152 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 153 | * |
e7b7af6e RD |
154 | * Note that this does not limit which TCM fabric module can be |
155 | * registered, but simply provids auto loading logic for modules with | |
156 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 157 | */ |
e7b7af6e RD |
158 | |
159 | if (!strncmp(name, "iscsi", 5)) { | |
160 | /* | |
161 | * Automatically load the LIO Target fabric module when the | |
162 | * following is called: | |
163 | * | |
164 | * mkdir -p $CONFIGFS/target/iscsi | |
165 | */ | |
166 | ret = request_module("iscsi_target_mod"); | |
167 | if (ret < 0) { | |
168 | pr_err("request_module() failed for" | |
169 | " iscsi_target_mod.ko: %d\n", ret); | |
170 | return ERR_PTR(-EINVAL); | |
171 | } | |
172 | } else if (!strncmp(name, "loopback", 8)) { | |
173 | /* | |
174 | * Automatically load the tcm_loop fabric module when the | |
175 | * following is called: | |
176 | * | |
177 | * mkdir -p $CONFIGFS/target/loopback | |
178 | */ | |
179 | ret = request_module("tcm_loop"); | |
180 | if (ret < 0) { | |
181 | pr_err("request_module() failed for" | |
182 | " tcm_loop.ko: %d\n", ret); | |
183 | return ERR_PTR(-EINVAL); | |
184 | } | |
c66ac9db | 185 | } |
e7b7af6e RD |
186 | |
187 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
188 | } |
189 | ||
6708bb27 AG |
190 | if (!tf) { |
191 | pr_err("target_core_get_fabric() failed for %s\n", | |
e7b7af6e | 192 | name); |
c66ac9db NB |
193 | return ERR_PTR(-EINVAL); |
194 | } | |
6708bb27 | 195 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
c66ac9db NB |
196 | " %s\n", tf->tf_name); |
197 | /* | |
198 | * On a successful target_core_get_fabric() look, the returned | |
199 | * struct target_fabric_configfs *tf will contain a usage reference. | |
200 | */ | |
6708bb27 | 201 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
d80e224d | 202 | &tf->tf_cit_tmpl.tfc_wwn_cit); |
c66ac9db NB |
203 | |
204 | tf->tf_group.default_groups = tf->tf_default_groups; | |
205 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
206 | tf->tf_group.default_groups[1] = NULL; | |
207 | ||
208 | config_group_init_type_name(&tf->tf_group, name, | |
d80e224d | 209 | &tf->tf_cit_tmpl.tfc_wwn_cit); |
c66ac9db | 210 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
d80e224d | 211 | &tf->tf_cit_tmpl.tfc_discovery_cit); |
c66ac9db | 212 | |
6708bb27 | 213 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db NB |
214 | " %s\n", tf->tf_group.cg_item.ci_name); |
215 | /* | |
216 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
217 | */ | |
218 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
219 | tf->tf_fabric = &tf->tf_group.cg_item; | |
6708bb27 | 220 | pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" |
c66ac9db NB |
221 | " for %s\n", name); |
222 | ||
223 | return &tf->tf_group; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Called from struct target_core_group_ops->drop_item() | |
228 | */ | |
229 | static void target_core_deregister_fabric( | |
230 | struct config_group *group, | |
231 | struct config_item *item) | |
232 | { | |
233 | struct target_fabric_configfs *tf = container_of( | |
234 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
235 | struct config_group *tf_group; | |
236 | struct config_item *df_item; | |
237 | int i; | |
238 | ||
6708bb27 | 239 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
240 | " tf list\n", config_item_name(item)); |
241 | ||
6708bb27 | 242 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
c66ac9db NB |
243 | " %s\n", tf->tf_name); |
244 | atomic_dec(&tf->tf_access_cnt); | |
245 | ||
6708bb27 | 246 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" |
c66ac9db NB |
247 | " tf->tf_fabric for %s\n", tf->tf_name); |
248 | tf->tf_fabric = NULL; | |
249 | ||
6708bb27 | 250 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
251 | " %s\n", config_item_name(item)); |
252 | ||
253 | tf_group = &tf->tf_group; | |
254 | for (i = 0; tf_group->default_groups[i]; i++) { | |
255 | df_item = &tf_group->default_groups[i]->cg_item; | |
256 | tf_group->default_groups[i] = NULL; | |
257 | config_item_put(df_item); | |
258 | } | |
259 | config_item_put(item); | |
260 | } | |
261 | ||
262 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
263 | .make_group = &target_core_register_fabric, | |
264 | .drop_item = &target_core_deregister_fabric, | |
265 | }; | |
266 | ||
267 | /* | |
268 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
269 | */ | |
270 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
271 | &target_core_item_attr_version, | |
272 | NULL, | |
273 | }; | |
274 | ||
275 | /* | |
276 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
277 | */ | |
278 | static struct config_item_type target_core_fabrics_item = { | |
279 | .ct_item_ops = &target_core_fabric_item_ops, | |
280 | .ct_group_ops = &target_core_fabric_group_ops, | |
281 | .ct_attrs = target_core_fabric_item_attrs, | |
282 | .ct_owner = THIS_MODULE, | |
283 | }; | |
284 | ||
285 | static struct configfs_subsystem target_core_fabrics = { | |
286 | .su_group = { | |
287 | .cg_item = { | |
288 | .ci_namebuf = "target", | |
289 | .ci_type = &target_core_fabrics_item, | |
290 | }, | |
291 | }, | |
292 | }; | |
293 | ||
56d128fa | 294 | struct configfs_subsystem *target_core_subsystem[] = { |
c66ac9db NB |
295 | &target_core_fabrics, |
296 | NULL, | |
297 | }; | |
298 | ||
299 | /*############################################################################## | |
300 | // Start functions called by external Target Fabrics Modules | |
301 | //############################################################################*/ | |
302 | ||
303 | /* | |
304 | * First function called by fabric modules to: | |
305 | * | |
306 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
307 | * 2) Add struct target_fabric_configfs to g_tf_list | |
308 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
309 | * into target_fabric_configfs_register(). | |
310 | */ | |
311 | struct target_fabric_configfs *target_fabric_configfs_init( | |
312 | struct module *fabric_mod, | |
313 | const char *name) | |
314 | { | |
315 | struct target_fabric_configfs *tf; | |
316 | ||
c66ac9db | 317 | if (!(name)) { |
6708bb27 | 318 | pr_err("Unable to locate passed fabric name\n"); |
e3d6f909 | 319 | return ERR_PTR(-EINVAL); |
c66ac9db | 320 | } |
60d645a4 | 321 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 322 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
c66ac9db | 323 | "_NAME_SIZE\n", name); |
e3d6f909 | 324 | return ERR_PTR(-EINVAL); |
c66ac9db NB |
325 | } |
326 | ||
327 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 328 | if (!tf) |
e3d6f909 | 329 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
330 | |
331 | INIT_LIST_HEAD(&tf->tf_list); | |
332 | atomic_set(&tf->tf_access_cnt, 0); | |
333 | /* | |
334 | * Setup the default generic struct config_item_type's (cits) in | |
335 | * struct target_fabric_configfs->tf_cit_tmpl | |
336 | */ | |
337 | tf->tf_module = fabric_mod; | |
338 | target_fabric_setup_cits(tf); | |
339 | ||
340 | tf->tf_subsys = target_core_subsystem[0]; | |
341 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
342 | ||
343 | mutex_lock(&g_tf_lock); | |
344 | list_add_tail(&tf->tf_list, &g_tf_list); | |
345 | mutex_unlock(&g_tf_lock); | |
346 | ||
6708bb27 | 347 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" |
c66ac9db | 348 | ">>>>>>>>>>>>>>\n"); |
6708bb27 | 349 | pr_debug("Initialized struct target_fabric_configfs: %p for" |
c66ac9db NB |
350 | " %s\n", tf, tf->tf_name); |
351 | return tf; | |
352 | } | |
353 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
354 | ||
355 | /* | |
356 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
357 | */ | |
358 | void target_fabric_configfs_free( | |
359 | struct target_fabric_configfs *tf) | |
360 | { | |
361 | mutex_lock(&g_tf_lock); | |
362 | list_del(&tf->tf_list); | |
363 | mutex_unlock(&g_tf_lock); | |
364 | ||
365 | kfree(tf); | |
366 | } | |
367 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
368 | ||
369 | /* | |
370 | * Perform a sanity check of the passed tf->tf_ops before completing | |
371 | * TCM fabric module registration. | |
372 | */ | |
373 | static int target_fabric_tf_ops_check( | |
374 | struct target_fabric_configfs *tf) | |
375 | { | |
376 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
377 | ||
6708bb27 AG |
378 | if (!tfo->get_fabric_name) { |
379 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
380 | return -EINVAL; |
381 | } | |
6708bb27 AG |
382 | if (!tfo->get_fabric_proto_ident) { |
383 | pr_err("Missing tfo->get_fabric_proto_ident()\n"); | |
c66ac9db NB |
384 | return -EINVAL; |
385 | } | |
6708bb27 AG |
386 | if (!tfo->tpg_get_wwn) { |
387 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
388 | return -EINVAL; |
389 | } | |
6708bb27 AG |
390 | if (!tfo->tpg_get_tag) { |
391 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
392 | return -EINVAL; |
393 | } | |
6708bb27 AG |
394 | if (!tfo->tpg_get_default_depth) { |
395 | pr_err("Missing tfo->tpg_get_default_depth()\n"); | |
c66ac9db NB |
396 | return -EINVAL; |
397 | } | |
6708bb27 AG |
398 | if (!tfo->tpg_get_pr_transport_id) { |
399 | pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); | |
c66ac9db NB |
400 | return -EINVAL; |
401 | } | |
6708bb27 AG |
402 | if (!tfo->tpg_get_pr_transport_id_len) { |
403 | pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
c66ac9db NB |
404 | return -EINVAL; |
405 | } | |
6708bb27 AG |
406 | if (!tfo->tpg_check_demo_mode) { |
407 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
408 | return -EINVAL; |
409 | } | |
6708bb27 AG |
410 | if (!tfo->tpg_check_demo_mode_cache) { |
411 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
412 | return -EINVAL; |
413 | } | |
6708bb27 AG |
414 | if (!tfo->tpg_check_demo_mode_write_protect) { |
415 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
416 | return -EINVAL; |
417 | } | |
6708bb27 AG |
418 | if (!tfo->tpg_check_prod_mode_write_protect) { |
419 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
420 | return -EINVAL; |
421 | } | |
6708bb27 AG |
422 | if (!tfo->tpg_alloc_fabric_acl) { |
423 | pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); | |
c66ac9db NB |
424 | return -EINVAL; |
425 | } | |
6708bb27 AG |
426 | if (!tfo->tpg_release_fabric_acl) { |
427 | pr_err("Missing tfo->tpg_release_fabric_acl()\n"); | |
c66ac9db NB |
428 | return -EINVAL; |
429 | } | |
6708bb27 AG |
430 | if (!tfo->tpg_get_inst_index) { |
431 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
432 | return -EINVAL; |
433 | } | |
35462975 | 434 | if (!tfo->release_cmd) { |
6708bb27 | 435 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
436 | return -EINVAL; |
437 | } | |
6708bb27 AG |
438 | if (!tfo->shutdown_session) { |
439 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
440 | return -EINVAL; |
441 | } | |
6708bb27 AG |
442 | if (!tfo->close_session) { |
443 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
444 | return -EINVAL; |
445 | } | |
6708bb27 AG |
446 | if (!tfo->sess_get_index) { |
447 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
448 | return -EINVAL; |
449 | } | |
6708bb27 AG |
450 | if (!tfo->write_pending) { |
451 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
452 | return -EINVAL; |
453 | } | |
6708bb27 AG |
454 | if (!tfo->write_pending_status) { |
455 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
456 | return -EINVAL; |
457 | } | |
6708bb27 AG |
458 | if (!tfo->set_default_node_attributes) { |
459 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
460 | return -EINVAL; |
461 | } | |
6708bb27 AG |
462 | if (!tfo->get_task_tag) { |
463 | pr_err("Missing tfo->get_task_tag()\n"); | |
c66ac9db NB |
464 | return -EINVAL; |
465 | } | |
6708bb27 AG |
466 | if (!tfo->get_cmd_state) { |
467 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
468 | return -EINVAL; |
469 | } | |
6708bb27 AG |
470 | if (!tfo->queue_data_in) { |
471 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
472 | return -EINVAL; |
473 | } | |
6708bb27 AG |
474 | if (!tfo->queue_status) { |
475 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
476 | return -EINVAL; |
477 | } | |
6708bb27 AG |
478 | if (!tfo->queue_tm_rsp) { |
479 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
480 | return -EINVAL; |
481 | } | |
131e6abc NB |
482 | if (!tfo->aborted_task) { |
483 | pr_err("Missing tfo->aborted_task()\n"); | |
484 | return -EINVAL; | |
485 | } | |
c66ac9db NB |
486 | /* |
487 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
488 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
489 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
490 | */ | |
6708bb27 AG |
491 | if (!tfo->fabric_make_wwn) { |
492 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
493 | return -EINVAL; |
494 | } | |
6708bb27 AG |
495 | if (!tfo->fabric_drop_wwn) { |
496 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
497 | return -EINVAL; |
498 | } | |
6708bb27 AG |
499 | if (!tfo->fabric_make_tpg) { |
500 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
501 | return -EINVAL; |
502 | } | |
6708bb27 AG |
503 | if (!tfo->fabric_drop_tpg) { |
504 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
505 | return -EINVAL; |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Called 2nd from fabric module with returned parameter of | |
513 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
514 | * | |
515 | * Upon a successful registration, the new fabric's struct config_item is | |
516 | * return. Also, a pointer to this struct is set in the passed | |
517 | * struct target_fabric_configfs. | |
518 | */ | |
519 | int target_fabric_configfs_register( | |
520 | struct target_fabric_configfs *tf) | |
521 | { | |
c66ac9db NB |
522 | int ret; |
523 | ||
6708bb27 AG |
524 | if (!tf) { |
525 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
526 | " pointer\n"); |
527 | return -EINVAL; | |
528 | } | |
6708bb27 AG |
529 | if (!tf->tf_subsys) { |
530 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
531 | " pointer\n"); |
532 | return -EINVAL; | |
533 | } | |
c66ac9db NB |
534 | ret = target_fabric_tf_ops_check(tf); |
535 | if (ret < 0) | |
536 | return ret; | |
537 | ||
6708bb27 | 538 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
539 | ">>>>>>>>>>\n"); |
540 | return 0; | |
541 | } | |
542 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
543 | ||
544 | void target_fabric_configfs_deregister( | |
545 | struct target_fabric_configfs *tf) | |
546 | { | |
c66ac9db NB |
547 | struct configfs_subsystem *su; |
548 | ||
6708bb27 AG |
549 | if (!tf) { |
550 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
551 | "configfs\n"); |
552 | return; | |
553 | } | |
554 | su = tf->tf_subsys; | |
6708bb27 AG |
555 | if (!su) { |
556 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
557 | " pointer\n"); |
558 | return; | |
559 | } | |
6708bb27 | 560 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
561 | ">>>>>>>>>>>>\n"); |
562 | mutex_lock(&g_tf_lock); | |
563 | if (atomic_read(&tf->tf_access_cnt)) { | |
564 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 565 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
566 | tf->tf_name); |
567 | BUG(); | |
568 | } | |
569 | list_del(&tf->tf_list); | |
570 | mutex_unlock(&g_tf_lock); | |
571 | ||
6708bb27 | 572 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
573 | " %s\n", tf->tf_name); |
574 | tf->tf_module = NULL; | |
575 | tf->tf_subsys = NULL; | |
576 | kfree(tf); | |
577 | ||
6708bb27 | 578 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 579 | ">>>>>\n"); |
c66ac9db NB |
580 | } |
581 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
582 | ||
583 | /*############################################################################## | |
584 | // Stop functions called by external Target Fabrics Modules | |
585 | //############################################################################*/ | |
586 | ||
f79a897e | 587 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db NB |
588 | |
589 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
590 | static ssize_t target_core_dev_show_attr_##_name( \ | |
591 | struct se_dev_attrib *da, \ | |
592 | char *page) \ | |
593 | { \ | |
0fd97ccf CH |
594 | return snprintf(page, PAGE_SIZE, "%u\n", \ |
595 | (u32)da->da_dev->dev_attrib._name); \ | |
c66ac9db NB |
596 | } |
597 | ||
598 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
599 | static ssize_t target_core_dev_store_attr_##_name( \ | |
600 | struct se_dev_attrib *da, \ | |
601 | const char *page, \ | |
602 | size_t count) \ | |
603 | { \ | |
c66ac9db NB |
604 | unsigned long val; \ |
605 | int ret; \ | |
606 | \ | |
57103d7f | 607 | ret = kstrtoul(page, 0, &val); \ |
c66ac9db | 608 | if (ret < 0) { \ |
57103d7f | 609 | pr_err("kstrtoul() failed with" \ |
c66ac9db NB |
610 | " ret: %d\n", ret); \ |
611 | return -EINVAL; \ | |
612 | } \ | |
0fd97ccf | 613 | ret = se_dev_set_##_name(da->da_dev, (u32)val); \ |
c66ac9db NB |
614 | \ |
615 | return (!ret) ? count : -EINVAL; \ | |
616 | } | |
617 | ||
618 | #define DEF_DEV_ATTRIB(_name) \ | |
619 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
620 | DEF_DEV_ATTRIB_STORE(_name); | |
621 | ||
622 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
623 | DEF_DEV_ATTRIB_SHOW(_name); | |
624 | ||
625 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
626 | #define SE_DEV_ATTR(_name, _mode) \ | |
627 | static struct target_core_dev_attrib_attribute \ | |
628 | target_core_dev_attrib_##_name = \ | |
629 | __CONFIGFS_EATTR(_name, _mode, \ | |
630 | target_core_dev_show_attr_##_name, \ | |
631 | target_core_dev_store_attr_##_name); | |
632 | ||
633 | #define SE_DEV_ATTR_RO(_name); \ | |
634 | static struct target_core_dev_attrib_attribute \ | |
635 | target_core_dev_attrib_##_name = \ | |
636 | __CONFIGFS_EATTR_RO(_name, \ | |
637 | target_core_dev_show_attr_##_name); | |
638 | ||
adfa9570 TB |
639 | DEF_DEV_ATTRIB(emulate_model_alias); |
640 | SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); | |
641 | ||
c66ac9db NB |
642 | DEF_DEV_ATTRIB(emulate_dpo); |
643 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
644 | ||
645 | DEF_DEV_ATTRIB(emulate_fua_write); | |
646 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
647 | ||
648 | DEF_DEV_ATTRIB(emulate_fua_read); | |
649 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
650 | ||
651 | DEF_DEV_ATTRIB(emulate_write_cache); | |
652 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
653 | ||
654 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
655 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
656 | ||
657 | DEF_DEV_ATTRIB(emulate_tas); | |
658 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
659 | ||
660 | DEF_DEV_ATTRIB(emulate_tpu); | |
661 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
662 | ||
663 | DEF_DEV_ATTRIB(emulate_tpws); | |
664 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
665 | ||
0123a9ec NB |
666 | DEF_DEV_ATTRIB(emulate_caw); |
667 | SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); | |
668 | ||
d397a445 NB |
669 | DEF_DEV_ATTRIB(emulate_3pc); |
670 | SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); | |
671 | ||
2ed22c9c NB |
672 | DEF_DEV_ATTRIB(pi_prot_type); |
673 | SE_DEV_ATTR(pi_prot_type, S_IRUGO | S_IWUSR); | |
674 | ||
675 | DEF_DEV_ATTRIB_RO(hw_pi_prot_type); | |
676 | SE_DEV_ATTR_RO(hw_pi_prot_type); | |
677 | ||
678 | DEF_DEV_ATTRIB(pi_prot_format); | |
679 | SE_DEV_ATTR(pi_prot_format, S_IRUGO | S_IWUSR); | |
680 | ||
c66ac9db NB |
681 | DEF_DEV_ATTRIB(enforce_pr_isids); |
682 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
683 | ||
e22a7f07 RD |
684 | DEF_DEV_ATTRIB(is_nonrot); |
685 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); | |
686 | ||
5de619a3 NB |
687 | DEF_DEV_ATTRIB(emulate_rest_reord); |
688 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); | |
689 | ||
92404e60 NB |
690 | DEF_DEV_ATTRIB(force_pr_aptpl); |
691 | SE_DEV_ATTR(force_pr_aptpl, S_IRUGO | S_IWUSR); | |
692 | ||
c66ac9db NB |
693 | DEF_DEV_ATTRIB_RO(hw_block_size); |
694 | SE_DEV_ATTR_RO(hw_block_size); | |
695 | ||
696 | DEF_DEV_ATTRIB(block_size); | |
697 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
698 | ||
699 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
700 | SE_DEV_ATTR_RO(hw_max_sectors); | |
701 | ||
015487b8 RD |
702 | DEF_DEV_ATTRIB(fabric_max_sectors); |
703 | SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); | |
704 | ||
c66ac9db NB |
705 | DEF_DEV_ATTRIB(optimal_sectors); |
706 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
707 | ||
708 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
709 | SE_DEV_ATTR_RO(hw_queue_depth); | |
710 | ||
711 | DEF_DEV_ATTRIB(queue_depth); | |
712 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
713 | ||
c66ac9db NB |
714 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
715 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
716 | ||
717 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
718 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
719 | ||
720 | DEF_DEV_ATTRIB(unmap_granularity); | |
721 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
722 | ||
723 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
724 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
725 | ||
773cbaf7 NB |
726 | DEF_DEV_ATTRIB(max_write_same_len); |
727 | SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); | |
728 | ||
c66ac9db NB |
729 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); |
730 | ||
731 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
adfa9570 | 732 | &target_core_dev_attrib_emulate_model_alias.attr, |
c66ac9db NB |
733 | &target_core_dev_attrib_emulate_dpo.attr, |
734 | &target_core_dev_attrib_emulate_fua_write.attr, | |
735 | &target_core_dev_attrib_emulate_fua_read.attr, | |
736 | &target_core_dev_attrib_emulate_write_cache.attr, | |
737 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
738 | &target_core_dev_attrib_emulate_tas.attr, | |
739 | &target_core_dev_attrib_emulate_tpu.attr, | |
740 | &target_core_dev_attrib_emulate_tpws.attr, | |
0123a9ec | 741 | &target_core_dev_attrib_emulate_caw.attr, |
d397a445 | 742 | &target_core_dev_attrib_emulate_3pc.attr, |
2ed22c9c NB |
743 | &target_core_dev_attrib_pi_prot_type.attr, |
744 | &target_core_dev_attrib_hw_pi_prot_type.attr, | |
745 | &target_core_dev_attrib_pi_prot_format.attr, | |
c66ac9db | 746 | &target_core_dev_attrib_enforce_pr_isids.attr, |
92404e60 | 747 | &target_core_dev_attrib_force_pr_aptpl.attr, |
e22a7f07 | 748 | &target_core_dev_attrib_is_nonrot.attr, |
5de619a3 | 749 | &target_core_dev_attrib_emulate_rest_reord.attr, |
c66ac9db NB |
750 | &target_core_dev_attrib_hw_block_size.attr, |
751 | &target_core_dev_attrib_block_size.attr, | |
752 | &target_core_dev_attrib_hw_max_sectors.attr, | |
015487b8 | 753 | &target_core_dev_attrib_fabric_max_sectors.attr, |
c66ac9db NB |
754 | &target_core_dev_attrib_optimal_sectors.attr, |
755 | &target_core_dev_attrib_hw_queue_depth.attr, | |
756 | &target_core_dev_attrib_queue_depth.attr, | |
c66ac9db NB |
757 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
758 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
759 | &target_core_dev_attrib_unmap_granularity.attr, | |
760 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
773cbaf7 | 761 | &target_core_dev_attrib_max_write_same_len.attr, |
c66ac9db NB |
762 | NULL, |
763 | }; | |
764 | ||
765 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
766 | .show_attribute = target_core_dev_attrib_attr_show, | |
767 | .store_attribute = target_core_dev_attrib_attr_store, | |
768 | }; | |
769 | ||
f79a897e NB |
770 | TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, |
771 | target_core_dev_attrib_attrs); | |
c66ac9db | 772 | |
f79a897e | 773 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 774 | |
f8d389c6 | 775 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db NB |
776 | |
777 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
778 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
779 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
780 | __CONFIGFS_EATTR(_name, _mode, \ | |
781 | target_core_dev_wwn_show_attr_##_name, \ | |
782 | target_core_dev_wwn_store_attr_##_name); | |
783 | ||
784 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
785 | do { \ | |
786 | static struct target_core_dev_wwn_attribute \ | |
787 | target_core_dev_wwn_##_name = \ | |
788 | __CONFIGFS_EATTR_RO(_name, \ | |
789 | target_core_dev_wwn_show_attr_##_name); \ | |
790 | } while (0); | |
791 | ||
792 | /* | |
793 | * VPD page 0x80 Unit serial | |
794 | */ | |
795 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
796 | struct t10_wwn *t10_wwn, | |
797 | char *page) | |
798 | { | |
c66ac9db NB |
799 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
800 | &t10_wwn->unit_serial[0]); | |
801 | } | |
802 | ||
803 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
804 | struct t10_wwn *t10_wwn, | |
805 | const char *page, | |
806 | size_t count) | |
807 | { | |
0fd97ccf | 808 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
809 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
810 | ||
811 | /* | |
812 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
813 | * from the struct scsi_device level firmware, do not allow | |
814 | * VPD Unit Serial to be emulated. | |
815 | * | |
816 | * Note this struct scsi_device could also be emulating VPD | |
817 | * information from its drivers/scsi LLD. But for now we assume | |
818 | * it is doing 'the right thing' wrt a world wide unique | |
819 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
820 | */ | |
0fd97ccf | 821 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 822 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
823 | " Unit Serial, ignoring request\n"); |
824 | return -EOPNOTSUPP; | |
825 | } | |
826 | ||
60d645a4 | 827 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 828 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
829 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
830 | return -EOVERFLOW; | |
831 | } | |
832 | /* | |
833 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
834 | * do exist, fail here as changing this information on the fly | |
835 | * (underneath the initiator side OS dependent multipath code) | |
836 | * could cause negative effects. | |
837 | */ | |
0fd97ccf CH |
838 | if (dev->export_count) { |
839 | pr_err("Unable to set VPD Unit Serial while" | |
840 | " active %d $FABRIC_MOD exports exist\n", | |
841 | dev->export_count); | |
842 | return -EINVAL; | |
c66ac9db | 843 | } |
0fd97ccf | 844 | |
c66ac9db NB |
845 | /* |
846 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
847 | * | |
848 | * Also, strip any newline added from the userspace | |
849 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
850 | */ | |
851 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
852 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 853 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 854 | "%s", strstrip(buf)); |
0fd97ccf | 855 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 856 | |
6708bb27 | 857 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 858 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
859 | |
860 | return count; | |
861 | } | |
862 | ||
863 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
864 | ||
865 | /* | |
866 | * VPD page 0x83 Protocol Identifier | |
867 | */ | |
868 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
869 | struct t10_wwn *t10_wwn, | |
870 | char *page) | |
871 | { | |
c66ac9db NB |
872 | struct t10_vpd *vpd; |
873 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
874 | ssize_t len = 0; | |
875 | ||
c66ac9db NB |
876 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
877 | ||
878 | spin_lock(&t10_wwn->t10_vpd_lock); | |
879 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 880 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
881 | continue; |
882 | ||
883 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
884 | ||
6708bb27 | 885 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
886 | break; |
887 | ||
888 | len += sprintf(page+len, "%s", buf); | |
889 | } | |
890 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
891 | ||
892 | return len; | |
893 | } | |
894 | ||
895 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
896 | struct t10_wwn *t10_wwn, | |
897 | const char *page, | |
898 | size_t count) | |
899 | { | |
900 | return -ENOSYS; | |
901 | } | |
902 | ||
903 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
904 | ||
905 | /* | |
906 | * Generic wrapper for dumping VPD identifiers by association. | |
907 | */ | |
908 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
909 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
910 | struct t10_wwn *t10_wwn, \ | |
911 | char *page) \ | |
912 | { \ | |
c66ac9db NB |
913 | struct t10_vpd *vpd; \ |
914 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
915 | ssize_t len = 0; \ | |
916 | \ | |
c66ac9db NB |
917 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
918 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
919 | if (vpd->association != _assoc) \ | |
920 | continue; \ | |
921 | \ | |
922 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
923 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 924 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
925 | break; \ |
926 | len += sprintf(page+len, "%s", buf); \ | |
927 | \ | |
928 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
929 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 930 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
931 | break; \ |
932 | len += sprintf(page+len, "%s", buf); \ | |
933 | \ | |
934 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
935 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 936 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
937 | break; \ |
938 | len += sprintf(page+len, "%s", buf); \ | |
939 | } \ | |
940 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
941 | \ | |
942 | return len; \ | |
943 | } | |
944 | ||
945 | /* | |
163cd5fa | 946 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
947 | */ |
948 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
949 | ||
950 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
951 | struct t10_wwn *t10_wwn, | |
952 | const char *page, | |
953 | size_t count) | |
954 | { | |
955 | return -ENOSYS; | |
956 | } | |
957 | ||
958 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
959 | ||
960 | /* | |
961 | * VPD page 0x83 Association: Target Port | |
962 | */ | |
963 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
964 | ||
965 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
966 | struct t10_wwn *t10_wwn, | |
967 | const char *page, | |
968 | size_t count) | |
969 | { | |
970 | return -ENOSYS; | |
971 | } | |
972 | ||
973 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
974 | ||
975 | /* | |
976 | * VPD page 0x83 Association: SCSI Target Device | |
977 | */ | |
978 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
979 | ||
980 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
981 | struct t10_wwn *t10_wwn, | |
982 | const char *page, | |
983 | size_t count) | |
984 | { | |
985 | return -ENOSYS; | |
986 | } | |
987 | ||
988 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
989 | ||
990 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
991 | ||
992 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
993 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
994 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
995 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
996 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
997 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
998 | NULL, | |
999 | }; | |
1000 | ||
1001 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1002 | .show_attribute = target_core_dev_wwn_attr_show, | |
1003 | .store_attribute = target_core_dev_wwn_attr_store, | |
1004 | }; | |
1005 | ||
f8d389c6 | 1006 | TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 1007 | |
f8d389c6 | 1008 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1009 | |
91e2e39b | 1010 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1011 | |
0fd97ccf | 1012 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
c66ac9db NB |
1013 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
1014 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1015 | __CONFIGFS_EATTR(_name, _mode, \ | |
1016 | target_core_dev_pr_show_attr_##_name, \ | |
1017 | target_core_dev_pr_store_attr_##_name); | |
1018 | ||
1019 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1020 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1021 | __CONFIGFS_EATTR_RO(_name, \ | |
1022 | target_core_dev_pr_show_attr_##_name); | |
1023 | ||
d977f437 CH |
1024 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
1025 | char *page) | |
c66ac9db NB |
1026 | { |
1027 | struct se_node_acl *se_nacl; | |
1028 | struct t10_pr_registration *pr_reg; | |
1029 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
1030 | |
1031 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1032 | ||
c66ac9db | 1033 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
1034 | if (!pr_reg) |
1035 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
1036 | ||
c66ac9db | 1037 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 1038 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 1039 | |
d977f437 | 1040 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 1041 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 1042 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
1043 | } |
1044 | ||
d977f437 CH |
1045 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
1046 | char *page) | |
c66ac9db NB |
1047 | { |
1048 | struct se_node_acl *se_nacl; | |
d977f437 | 1049 | ssize_t len; |
c66ac9db | 1050 | |
c66ac9db | 1051 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
1052 | if (se_nacl) { |
1053 | len = sprintf(page, | |
1054 | "SPC-2 Reservation: %s Initiator: %s\n", | |
1055 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
1056 | se_nacl->initiatorname); | |
1057 | } else { | |
1058 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1059 | } |
d977f437 | 1060 | return len; |
c66ac9db NB |
1061 | } |
1062 | ||
0fd97ccf CH |
1063 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
1064 | char *page) | |
c66ac9db | 1065 | { |
d977f437 | 1066 | int ret; |
c66ac9db | 1067 | |
d977f437 CH |
1068 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1069 | return sprintf(page, "Passthrough\n"); | |
c66ac9db | 1070 | |
d977f437 CH |
1071 | spin_lock(&dev->dev_reservation_lock); |
1072 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1073 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1074 | else | |
1075 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1076 | spin_unlock(&dev->dev_reservation_lock); | |
1077 | return ret; | |
c66ac9db NB |
1078 | } |
1079 | ||
1080 | SE_DEV_PR_ATTR_RO(res_holder); | |
1081 | ||
c66ac9db | 1082 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
0fd97ccf | 1083 | struct se_device *dev, char *page) |
c66ac9db | 1084 | { |
c66ac9db NB |
1085 | ssize_t len = 0; |
1086 | ||
c66ac9db | 1087 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1088 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1089 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1090 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1091 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1092 | " Ports registration\n"); | |
d977f437 | 1093 | } else { |
c66ac9db NB |
1094 | len = sprintf(page, "SPC-3 Reservation: Single" |
1095 | " Target Port registration\n"); | |
d977f437 | 1096 | } |
c66ac9db | 1097 | |
d977f437 | 1098 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1099 | return len; |
1100 | } | |
1101 | ||
1102 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1103 | ||
c66ac9db | 1104 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
0fd97ccf | 1105 | struct se_device *dev, char *page) |
c66ac9db | 1106 | { |
0fd97ccf | 1107 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
c66ac9db NB |
1108 | } |
1109 | ||
1110 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1111 | ||
1112 | /* | |
1113 | * res_pr_holder_tg_port | |
1114 | */ | |
1115 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
0fd97ccf | 1116 | struct se_device *dev, char *page) |
c66ac9db | 1117 | { |
c66ac9db NB |
1118 | struct se_node_acl *se_nacl; |
1119 | struct se_lun *lun; | |
1120 | struct se_portal_group *se_tpg; | |
1121 | struct t10_pr_registration *pr_reg; | |
1122 | struct target_core_fabric_ops *tfo; | |
1123 | ssize_t len = 0; | |
1124 | ||
c66ac9db NB |
1125 | spin_lock(&dev->dev_reservation_lock); |
1126 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1127 | if (!pr_reg) { |
c66ac9db | 1128 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1129 | goto out_unlock; |
c66ac9db | 1130 | } |
d977f437 | 1131 | |
c66ac9db NB |
1132 | se_nacl = pr_reg->pr_reg_nacl; |
1133 | se_tpg = se_nacl->se_tpg; | |
1134 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1135 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1136 | |
1137 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1138 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1139 | tfo->tpg_get_wwn(se_tpg)); | |
1140 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1141 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
c66ac9db NB |
1142 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, |
1143 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1144 | tfo->get_fabric_name(), lun->unpacked_lun); | |
c66ac9db | 1145 | |
d977f437 CH |
1146 | out_unlock: |
1147 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1148 | return len; |
1149 | } | |
1150 | ||
1151 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1152 | ||
c66ac9db | 1153 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
0fd97ccf | 1154 | struct se_device *dev, char *page) |
c66ac9db NB |
1155 | { |
1156 | struct target_core_fabric_ops *tfo; | |
1157 | struct t10_pr_registration *pr_reg; | |
1158 | unsigned char buf[384]; | |
1159 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1160 | ssize_t len = 0; | |
d2843c17 | 1161 | int reg_count = 0; |
c66ac9db | 1162 | |
c66ac9db NB |
1163 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1164 | ||
0fd97ccf CH |
1165 | spin_lock(&dev->t10_pr.registration_lock); |
1166 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1167 | pr_reg_list) { |
1168 | ||
1169 | memset(buf, 0, 384); | |
1170 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1171 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 1172 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
1173 | PR_REG_ISID_ID_LEN); |
1174 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1175 | tfo->get_fabric_name(), | |
d2843c17 | 1176 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1177 | pr_reg->pr_res_generation); |
1178 | ||
6708bb27 | 1179 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1180 | break; |
1181 | ||
1182 | len += sprintf(page+len, "%s", buf); | |
1183 | reg_count++; | |
1184 | } | |
0fd97ccf | 1185 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1186 | |
6708bb27 | 1187 | if (!reg_count) |
c66ac9db NB |
1188 | len += sprintf(page+len, "None\n"); |
1189 | ||
1190 | return len; | |
1191 | } | |
1192 | ||
1193 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1194 | ||
c66ac9db | 1195 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
0fd97ccf | 1196 | struct se_device *dev, char *page) |
c66ac9db | 1197 | { |
c66ac9db NB |
1198 | struct t10_pr_registration *pr_reg; |
1199 | ssize_t len = 0; | |
1200 | ||
c66ac9db NB |
1201 | spin_lock(&dev->dev_reservation_lock); |
1202 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1203 | if (pr_reg) { |
1204 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1205 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1206 | } else { | |
c66ac9db | 1207 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1208 | } |
c66ac9db | 1209 | |
d977f437 | 1210 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1211 | return len; |
1212 | } | |
1213 | ||
1214 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1215 | ||
c66ac9db | 1216 | static ssize_t target_core_dev_pr_show_attr_res_type( |
0fd97ccf | 1217 | struct se_device *dev, char *page) |
c66ac9db | 1218 | { |
d977f437 CH |
1219 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1220 | return sprintf(page, "SPC_PASSTHROUGH\n"); | |
1221 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1222 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1223 | else | |
1224 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1225 | } |
1226 | ||
1227 | SE_DEV_PR_ATTR_RO(res_type); | |
1228 | ||
c66ac9db | 1229 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
0fd97ccf | 1230 | struct se_device *dev, char *page) |
c66ac9db | 1231 | { |
d977f437 | 1232 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1233 | return 0; |
1234 | ||
1235 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1236 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1237 | } |
1238 | ||
1239 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1240 | ||
1241 | /* | |
1242 | * res_aptpl_metadata | |
1243 | */ | |
1244 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
0fd97ccf | 1245 | struct se_device *dev, char *page) |
c66ac9db | 1246 | { |
d977f437 | 1247 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1248 | return 0; |
1249 | ||
1250 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1251 | } | |
1252 | ||
1253 | enum { | |
1254 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1255 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1256 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1257 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1258 | }; | |
1259 | ||
1260 | static match_table_t tokens = { | |
1261 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1262 | {Opt_initiator_node, "initiator_node=%s"}, | |
1263 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1264 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1265 | {Opt_res_holder, "res_holder=%d"}, | |
1266 | {Opt_res_type, "res_type=%d"}, | |
1267 | {Opt_res_scope, "res_scope=%d"}, | |
1268 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1269 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1270 | {Opt_target_fabric, "target_fabric=%s"}, | |
1271 | {Opt_target_node, "target_node=%s"}, | |
1272 | {Opt_tpgt, "tpgt=%d"}, | |
1273 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1274 | {Opt_target_lun, "target_lun=%d"}, | |
1275 | {Opt_err, NULL} | |
1276 | }; | |
1277 | ||
1278 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
0fd97ccf | 1279 | struct se_device *dev, |
c66ac9db NB |
1280 | const char *page, |
1281 | size_t count) | |
1282 | { | |
6d180253 JJ |
1283 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1284 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 1285 | char *orig, *ptr, *opts; |
c66ac9db NB |
1286 | substring_t args[MAX_OPT_ARGS]; |
1287 | unsigned long long tmp_ll; | |
1288 | u64 sa_res_key = 0; | |
1289 | u32 mapped_lun = 0, target_lun = 0; | |
1290 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1291 | u16 port_rpti = 0, tpgt = 0; | |
1292 | u8 type = 0, scope; | |
1293 | ||
d977f437 CH |
1294 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1295 | return 0; | |
1296 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
c66ac9db NB |
1297 | return 0; |
1298 | ||
0fd97ccf | 1299 | if (dev->export_count) { |
6708bb27 | 1300 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1301 | " active fabric exports exist\n"); |
1302 | return -EINVAL; | |
1303 | } | |
1304 | ||
1305 | opts = kstrdup(page, GFP_KERNEL); | |
1306 | if (!opts) | |
1307 | return -ENOMEM; | |
1308 | ||
1309 | orig = opts; | |
90c161b6 | 1310 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1311 | if (!*ptr) |
1312 | continue; | |
1313 | ||
1314 | token = match_token(ptr, tokens, args); | |
1315 | switch (token) { | |
1316 | case Opt_initiator_fabric: | |
8d213559 | 1317 | i_fabric = match_strdup(args); |
6d180253 JJ |
1318 | if (!i_fabric) { |
1319 | ret = -ENOMEM; | |
1320 | goto out; | |
1321 | } | |
c66ac9db NB |
1322 | break; |
1323 | case Opt_initiator_node: | |
8d213559 | 1324 | i_port = match_strdup(args); |
6d180253 JJ |
1325 | if (!i_port) { |
1326 | ret = -ENOMEM; | |
1327 | goto out; | |
1328 | } | |
60d645a4 | 1329 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1330 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1331 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1332 | PR_APTPL_MAX_IPORT_LEN); | |
1333 | ret = -EINVAL; | |
1334 | break; | |
1335 | } | |
1336 | break; | |
1337 | case Opt_initiator_sid: | |
8d213559 | 1338 | isid = match_strdup(args); |
6d180253 JJ |
1339 | if (!isid) { |
1340 | ret = -ENOMEM; | |
1341 | goto out; | |
1342 | } | |
60d645a4 | 1343 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1344 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1345 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1346 | PR_REG_ISID_LEN); | |
1347 | ret = -EINVAL; | |
1348 | break; | |
1349 | } | |
1350 | break; | |
1351 | case Opt_sa_res_key: | |
8d213559 | 1352 | ret = kstrtoull(args->from, 0, &tmp_ll); |
c66ac9db | 1353 | if (ret < 0) { |
8d213559 | 1354 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1355 | goto out; |
1356 | } | |
1357 | sa_res_key = (u64)tmp_ll; | |
1358 | break; | |
1359 | /* | |
1360 | * PR APTPL Metadata for Reservation | |
1361 | */ | |
1362 | case Opt_res_holder: | |
1363 | match_int(args, &arg); | |
1364 | res_holder = arg; | |
1365 | break; | |
1366 | case Opt_res_type: | |
1367 | match_int(args, &arg); | |
1368 | type = (u8)arg; | |
1369 | break; | |
1370 | case Opt_res_scope: | |
1371 | match_int(args, &arg); | |
1372 | scope = (u8)arg; | |
1373 | break; | |
1374 | case Opt_res_all_tg_pt: | |
1375 | match_int(args, &arg); | |
1376 | all_tg_pt = (int)arg; | |
1377 | break; | |
1378 | case Opt_mapped_lun: | |
1379 | match_int(args, &arg); | |
1380 | mapped_lun = (u32)arg; | |
1381 | break; | |
1382 | /* | |
1383 | * PR APTPL Metadata for Target Port | |
1384 | */ | |
1385 | case Opt_target_fabric: | |
8d213559 | 1386 | t_fabric = match_strdup(args); |
6d180253 JJ |
1387 | if (!t_fabric) { |
1388 | ret = -ENOMEM; | |
1389 | goto out; | |
1390 | } | |
c66ac9db NB |
1391 | break; |
1392 | case Opt_target_node: | |
8d213559 | 1393 | t_port = match_strdup(args); |
6d180253 JJ |
1394 | if (!t_port) { |
1395 | ret = -ENOMEM; | |
1396 | goto out; | |
1397 | } | |
60d645a4 | 1398 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1399 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1400 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1401 | PR_APTPL_MAX_TPORT_LEN); | |
1402 | ret = -EINVAL; | |
1403 | break; | |
1404 | } | |
1405 | break; | |
1406 | case Opt_tpgt: | |
1407 | match_int(args, &arg); | |
1408 | tpgt = (u16)arg; | |
1409 | break; | |
1410 | case Opt_port_rtpi: | |
1411 | match_int(args, &arg); | |
1412 | port_rpti = (u16)arg; | |
1413 | break; | |
1414 | case Opt_target_lun: | |
1415 | match_int(args, &arg); | |
1416 | target_lun = (u32)arg; | |
1417 | break; | |
1418 | default: | |
1419 | break; | |
1420 | } | |
1421 | } | |
1422 | ||
6708bb27 AG |
1423 | if (!i_port || !t_port || !sa_res_key) { |
1424 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1425 | ret = -EINVAL; |
1426 | goto out; | |
1427 | } | |
1428 | ||
1429 | if (res_holder && !(type)) { | |
6708bb27 | 1430 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1431 | " holder\n", type); |
1432 | ret = -EINVAL; | |
1433 | goto out; | |
1434 | } | |
1435 | ||
0fd97ccf | 1436 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1437 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1438 | res_holder, all_tg_pt, type); | |
1439 | out: | |
6d180253 JJ |
1440 | kfree(i_fabric); |
1441 | kfree(i_port); | |
1442 | kfree(isid); | |
1443 | kfree(t_fabric); | |
1444 | kfree(t_port); | |
c66ac9db NB |
1445 | kfree(orig); |
1446 | return (ret == 0) ? count : ret; | |
1447 | } | |
1448 | ||
1449 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1450 | ||
0fd97ccf | 1451 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
c66ac9db NB |
1452 | |
1453 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1454 | &target_core_dev_pr_res_holder.attr, | |
1455 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1456 | &target_core_dev_pr_res_pr_generation.attr, | |
1457 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1458 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1459 | &target_core_dev_pr_res_pr_type.attr, | |
1460 | &target_core_dev_pr_res_type.attr, | |
1461 | &target_core_dev_pr_res_aptpl_active.attr, | |
1462 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1463 | NULL, | |
1464 | }; | |
1465 | ||
1466 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1467 | .show_attribute = target_core_dev_pr_attr_show, | |
1468 | .store_attribute = target_core_dev_pr_attr_store, | |
1469 | }; | |
1470 | ||
91e2e39b | 1471 | TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); |
c66ac9db | 1472 | |
91e2e39b | 1473 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1474 | |
73112edc | 1475 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
1476 | |
1477 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1478 | { | |
0fd97ccf CH |
1479 | struct se_device *dev = p; |
1480 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db NB |
1481 | int bl = 0; |
1482 | ssize_t read_bytes = 0; | |
1483 | ||
0fd97ccf | 1484 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1485 | read_bytes += bl; |
0fd97ccf | 1486 | read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); |
c66ac9db NB |
1487 | return read_bytes; |
1488 | } | |
1489 | ||
1490 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1491 | .attr = { .ca_owner = THIS_MODULE, | |
1492 | .ca_name = "info", | |
1493 | .ca_mode = S_IRUGO }, | |
1494 | .show = target_core_show_dev_info, | |
1495 | .store = NULL, | |
1496 | }; | |
1497 | ||
1498 | static ssize_t target_core_store_dev_control( | |
1499 | void *p, | |
1500 | const char *page, | |
1501 | size_t count) | |
1502 | { | |
0fd97ccf CH |
1503 | struct se_device *dev = p; |
1504 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db | 1505 | |
0fd97ccf | 1506 | return t->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1507 | } |
1508 | ||
1509 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1510 | .attr = { .ca_owner = THIS_MODULE, | |
1511 | .ca_name = "control", | |
1512 | .ca_mode = S_IWUSR }, | |
1513 | .show = NULL, | |
1514 | .store = target_core_store_dev_control, | |
1515 | }; | |
1516 | ||
1517 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1518 | { | |
0fd97ccf | 1519 | struct se_device *dev = p; |
c66ac9db | 1520 | |
0fd97ccf | 1521 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1522 | return 0; |
1523 | ||
0fd97ccf | 1524 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1525 | } |
1526 | ||
1527 | static ssize_t target_core_store_dev_alias( | |
1528 | void *p, | |
1529 | const char *page, | |
1530 | size_t count) | |
1531 | { | |
0fd97ccf CH |
1532 | struct se_device *dev = p; |
1533 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1534 | ssize_t read_bytes; |
1535 | ||
1536 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1537 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1538 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1539 | SE_DEV_ALIAS_LEN-1); | |
1540 | return -EINVAL; | |
1541 | } | |
1542 | ||
0fd97ccf | 1543 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1544 | if (!read_bytes) |
1545 | return -EINVAL; | |
0fd97ccf CH |
1546 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1547 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1548 | |
0fd97ccf | 1549 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1550 | |
6708bb27 | 1551 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1552 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1553 | config_item_name(&dev->dev_group.cg_item), |
1554 | dev->dev_alias); | |
c66ac9db NB |
1555 | |
1556 | return read_bytes; | |
1557 | } | |
1558 | ||
1559 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1560 | .attr = { .ca_owner = THIS_MODULE, | |
1561 | .ca_name = "alias", | |
1562 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1563 | .show = target_core_show_dev_alias, | |
1564 | .store = target_core_store_dev_alias, | |
1565 | }; | |
1566 | ||
1567 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1568 | { | |
0fd97ccf | 1569 | struct se_device *dev = p; |
c66ac9db | 1570 | |
0fd97ccf | 1571 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1572 | return 0; |
1573 | ||
0fd97ccf | 1574 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1575 | } |
1576 | ||
1577 | static ssize_t target_core_store_dev_udev_path( | |
1578 | void *p, | |
1579 | const char *page, | |
1580 | size_t count) | |
1581 | { | |
0fd97ccf CH |
1582 | struct se_device *dev = p; |
1583 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1584 | ssize_t read_bytes; |
1585 | ||
1586 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1587 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1588 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1589 | SE_UDEV_PATH_LEN-1); | |
1590 | return -EINVAL; | |
1591 | } | |
1592 | ||
0fd97ccf | 1593 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1594 | "%s", page); |
3011684c DC |
1595 | if (!read_bytes) |
1596 | return -EINVAL; | |
0fd97ccf CH |
1597 | if (dev->udev_path[read_bytes - 1] == '\n') |
1598 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1599 | |
0fd97ccf | 1600 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1601 | |
6708bb27 | 1602 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1603 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1604 | config_item_name(&dev->dev_group.cg_item), |
1605 | dev->udev_path); | |
c66ac9db NB |
1606 | |
1607 | return read_bytes; | |
1608 | } | |
1609 | ||
1610 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1611 | .attr = { .ca_owner = THIS_MODULE, | |
1612 | .ca_name = "udev_path", | |
1613 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1614 | .show = target_core_show_dev_udev_path, | |
1615 | .store = target_core_store_dev_udev_path, | |
1616 | }; | |
1617 | ||
64146db7 AG |
1618 | static ssize_t target_core_show_dev_enable(void *p, char *page) |
1619 | { | |
1620 | struct se_device *dev = p; | |
1621 | ||
1622 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); | |
1623 | } | |
1624 | ||
c66ac9db NB |
1625 | static ssize_t target_core_store_dev_enable( |
1626 | void *p, | |
1627 | const char *page, | |
1628 | size_t count) | |
1629 | { | |
0fd97ccf | 1630 | struct se_device *dev = p; |
c66ac9db | 1631 | char *ptr; |
0fd97ccf | 1632 | int ret; |
c66ac9db NB |
1633 | |
1634 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1635 | if (!ptr) { |
1636 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1637 | " is \"1\"\n"); |
1638 | return -EINVAL; | |
1639 | } | |
c66ac9db | 1640 | |
0fd97ccf CH |
1641 | ret = target_configure_device(dev); |
1642 | if (ret) | |
1643 | return ret; | |
c66ac9db NB |
1644 | return count; |
1645 | } | |
1646 | ||
1647 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1648 | .attr = { .ca_owner = THIS_MODULE, | |
1649 | .ca_name = "enable", | |
64146db7 AG |
1650 | .ca_mode = S_IRUGO | S_IWUSR }, |
1651 | .show = target_core_show_dev_enable, | |
c66ac9db NB |
1652 | .store = target_core_store_dev_enable, |
1653 | }; | |
1654 | ||
1655 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1656 | { | |
0fd97ccf | 1657 | struct se_device *dev = p; |
c66ac9db NB |
1658 | struct config_item *lu_ci; |
1659 | struct t10_alua_lu_gp *lu_gp; | |
1660 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1661 | ssize_t len = 0; | |
1662 | ||
c66ac9db | 1663 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1664 | if (!lu_gp_mem) |
1665 | return 0; | |
c66ac9db NB |
1666 | |
1667 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1668 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1669 | if (lu_gp) { |
c66ac9db NB |
1670 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1671 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1672 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1673 | } | |
1674 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1675 | ||
1676 | return len; | |
1677 | } | |
1678 | ||
1679 | static ssize_t target_core_store_alua_lu_gp( | |
1680 | void *p, | |
1681 | const char *page, | |
1682 | size_t count) | |
1683 | { | |
0fd97ccf CH |
1684 | struct se_device *dev = p; |
1685 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1686 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
1687 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1688 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1689 | int move = 0; | |
1690 | ||
c87fbd56 CH |
1691 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
1692 | if (!lu_gp_mem) | |
1693 | return 0; | |
1694 | ||
c66ac9db | 1695 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 1696 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1697 | return -EINVAL; |
1698 | } | |
1699 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1700 | memcpy(buf, page, count); | |
1701 | /* | |
1702 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1703 | * making a new group association. | |
1704 | */ | |
1705 | if (strcmp(strstrip(buf), "NULL")) { | |
1706 | /* | |
1707 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1708 | * struct t10_alua_lu_gp. This reference is released with | |
1709 | * core_alua_get_lu_gp_by_name below(). | |
1710 | */ | |
1711 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1712 | if (!lu_gp_new) |
c66ac9db NB |
1713 | return -ENODEV; |
1714 | } | |
c66ac9db NB |
1715 | |
1716 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1717 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1718 | if (lu_gp) { |
c66ac9db NB |
1719 | /* |
1720 | * Clearing an existing lu_gp association, and replacing | |
1721 | * with NULL | |
1722 | */ | |
6708bb27 AG |
1723 | if (!lu_gp_new) { |
1724 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1725 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1726 | " %hu\n", | |
1727 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1728 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1729 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
1730 | lu_gp->lu_gp_id); | |
1731 | ||
1732 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1733 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1734 | ||
1735 | return count; | |
1736 | } | |
1737 | /* | |
1738 | * Removing existing association of lu_gp_mem with lu_gp | |
1739 | */ | |
1740 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1741 | move = 1; | |
1742 | } | |
1743 | /* | |
1744 | * Associate lu_gp_mem with lu_gp_new. | |
1745 | */ | |
1746 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1747 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1748 | ||
6708bb27 | 1749 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1750 | " core/alua/lu_gps/%s, ID: %hu\n", |
1751 | (move) ? "Moving" : "Adding", | |
1752 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1753 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1754 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
1755 | lu_gp_new->lu_gp_id); | |
1756 | ||
1757 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1758 | return count; | |
1759 | } | |
1760 | ||
1761 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1762 | .attr = { .ca_owner = THIS_MODULE, | |
1763 | .ca_name = "alua_lu_gp", | |
1764 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1765 | .show = target_core_show_alua_lu_gp, | |
1766 | .store = target_core_store_alua_lu_gp, | |
1767 | }; | |
1768 | ||
229d4f11 HR |
1769 | static ssize_t target_core_show_dev_lba_map(void *p, char *page) |
1770 | { | |
1771 | struct se_device *dev = p; | |
1772 | struct t10_alua_lba_map *map; | |
1773 | struct t10_alua_lba_map_member *mem; | |
1774 | char *b = page; | |
1775 | int bl = 0; | |
1776 | char state; | |
1777 | ||
1778 | spin_lock(&dev->t10_alua.lba_map_lock); | |
1779 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
1780 | bl += sprintf(b + bl, "%u %u\n", | |
1781 | dev->t10_alua.lba_map_segment_size, | |
1782 | dev->t10_alua.lba_map_segment_multiplier); | |
1783 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
1784 | bl += sprintf(b + bl, "%llu %llu", | |
1785 | map->lba_map_first_lba, map->lba_map_last_lba); | |
1786 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
1787 | lba_map_mem_list) { | |
1788 | switch (mem->lba_map_mem_alua_state) { | |
1789 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
1790 | state = 'O'; | |
1791 | break; | |
1792 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
1793 | state = 'A'; | |
1794 | break; | |
1795 | case ALUA_ACCESS_STATE_STANDBY: | |
1796 | state = 'S'; | |
1797 | break; | |
1798 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
1799 | state = 'U'; | |
1800 | break; | |
1801 | default: | |
1802 | state = '.'; | |
1803 | break; | |
1804 | } | |
1805 | bl += sprintf(b + bl, " %d:%c", | |
1806 | mem->lba_map_mem_alua_pg_id, state); | |
1807 | } | |
1808 | bl += sprintf(b + bl, "\n"); | |
1809 | } | |
1810 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
1811 | return bl; | |
1812 | } | |
1813 | ||
1814 | static ssize_t target_core_store_dev_lba_map( | |
1815 | void *p, | |
1816 | const char *page, | |
1817 | size_t count) | |
1818 | { | |
1819 | struct se_device *dev = p; | |
1820 | struct t10_alua_lba_map *lba_map = NULL; | |
1821 | struct list_head lba_list; | |
1822 | char *map_entries, *ptr; | |
1823 | char state; | |
1824 | int pg_num = -1, pg; | |
1825 | int ret = 0, num = 0, pg_id, alua_state; | |
1826 | unsigned long start_lba = -1, end_lba = -1; | |
1827 | unsigned long segment_size = -1, segment_mult = -1; | |
1828 | ||
1829 | map_entries = kstrdup(page, GFP_KERNEL); | |
1830 | if (!map_entries) | |
1831 | return -ENOMEM; | |
1832 | ||
1833 | INIT_LIST_HEAD(&lba_list); | |
1834 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
1835 | if (!*ptr) | |
1836 | continue; | |
1837 | ||
1838 | if (num == 0) { | |
1839 | if (sscanf(ptr, "%lu %lu\n", | |
1840 | &segment_size, &segment_mult) != 2) { | |
1841 | pr_err("Invalid line %d\n", num); | |
1842 | ret = -EINVAL; | |
1843 | break; | |
1844 | } | |
1845 | num++; | |
1846 | continue; | |
1847 | } | |
1848 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
1849 | pr_err("Invalid line %d\n", num); | |
1850 | ret = -EINVAL; | |
1851 | break; | |
1852 | } | |
1853 | ptr = strchr(ptr, ' '); | |
1854 | if (!ptr) { | |
1855 | pr_err("Invalid line %d, missing end lba\n", num); | |
1856 | ret = -EINVAL; | |
1857 | break; | |
1858 | } | |
1859 | ptr++; | |
1860 | ptr = strchr(ptr, ' '); | |
1861 | if (!ptr) { | |
1862 | pr_err("Invalid line %d, missing state definitions\n", | |
1863 | num); | |
1864 | ret = -EINVAL; | |
1865 | break; | |
1866 | } | |
1867 | ptr++; | |
1868 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
1869 | start_lba, end_lba); | |
1870 | if (IS_ERR(lba_map)) { | |
1871 | ret = PTR_ERR(lba_map); | |
1872 | break; | |
1873 | } | |
1874 | pg = 0; | |
1875 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
1876 | switch (state) { | |
1877 | case 'O': | |
1878 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
1879 | break; | |
1880 | case 'A': | |
1881 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
1882 | break; | |
1883 | case 'S': | |
1884 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
1885 | break; | |
1886 | case 'U': | |
1887 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
1888 | break; | |
1889 | default: | |
1890 | pr_err("Invalid ALUA state '%c'\n", state); | |
1891 | ret = -EINVAL; | |
1892 | goto out; | |
1893 | } | |
1894 | ||
1895 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
1896 | pg_id, alua_state); | |
1897 | if (ret) { | |
1898 | pr_err("Invalid target descriptor %d:%c " | |
1899 | "at line %d\n", | |
1900 | pg_id, state, num); | |
1901 | break; | |
1902 | } | |
1903 | pg++; | |
1904 | ptr = strchr(ptr, ' '); | |
1905 | if (ptr) | |
1906 | ptr++; | |
1907 | else | |
1908 | break; | |
1909 | } | |
1910 | if (pg_num == -1) | |
1911 | pg_num = pg; | |
1912 | else if (pg != pg_num) { | |
1913 | pr_err("Only %d from %d port groups definitions " | |
1914 | "at line %d\n", pg, pg_num, num); | |
1915 | ret = -EINVAL; | |
1916 | break; | |
1917 | } | |
1918 | num++; | |
1919 | } | |
1920 | out: | |
1921 | if (ret) { | |
1922 | core_alua_free_lba_map(&lba_list); | |
1923 | count = ret; | |
1924 | } else | |
1925 | core_alua_set_lba_map(dev, &lba_list, | |
1926 | segment_size, segment_mult); | |
1927 | kfree(map_entries); | |
1928 | return count; | |
1929 | } | |
1930 | ||
1931 | static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { | |
1932 | .attr = { .ca_owner = THIS_MODULE, | |
1933 | .ca_name = "lba_map", | |
1934 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1935 | .show = target_core_show_dev_lba_map, | |
1936 | .store = target_core_store_dev_lba_map, | |
1937 | }; | |
1938 | ||
73112edc | 1939 | static struct configfs_attribute *target_core_dev_attrs[] = { |
c66ac9db NB |
1940 | &target_core_attr_dev_info.attr, |
1941 | &target_core_attr_dev_control.attr, | |
1942 | &target_core_attr_dev_alias.attr, | |
1943 | &target_core_attr_dev_udev_path.attr, | |
1944 | &target_core_attr_dev_enable.attr, | |
1945 | &target_core_attr_dev_alua_lu_gp.attr, | |
229d4f11 | 1946 | &target_core_attr_dev_lba_map.attr, |
c66ac9db NB |
1947 | NULL, |
1948 | }; | |
1949 | ||
1950 | static void target_core_dev_release(struct config_item *item) | |
1951 | { | |
0fd97ccf CH |
1952 | struct config_group *dev_cg = to_config_group(item); |
1953 | struct se_device *dev = | |
1954 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 1955 | |
c66ac9db | 1956 | kfree(dev_cg->default_groups); |
0fd97ccf | 1957 | target_free_device(dev); |
c66ac9db NB |
1958 | } |
1959 | ||
1960 | static ssize_t target_core_dev_show(struct config_item *item, | |
1961 | struct configfs_attribute *attr, | |
1962 | char *page) | |
1963 | { | |
0fd97ccf CH |
1964 | struct config_group *dev_cg = to_config_group(item); |
1965 | struct se_device *dev = | |
1966 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1967 | struct target_core_configfs_attribute *tc_attr = container_of( |
1968 | attr, struct target_core_configfs_attribute, attr); | |
1969 | ||
6708bb27 | 1970 | if (!tc_attr->show) |
c66ac9db NB |
1971 | return -EINVAL; |
1972 | ||
0fd97ccf | 1973 | return tc_attr->show(dev, page); |
c66ac9db NB |
1974 | } |
1975 | ||
1976 | static ssize_t target_core_dev_store(struct config_item *item, | |
1977 | struct configfs_attribute *attr, | |
1978 | const char *page, size_t count) | |
1979 | { | |
0fd97ccf CH |
1980 | struct config_group *dev_cg = to_config_group(item); |
1981 | struct se_device *dev = | |
1982 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1983 | struct target_core_configfs_attribute *tc_attr = container_of( |
1984 | attr, struct target_core_configfs_attribute, attr); | |
1985 | ||
6708bb27 | 1986 | if (!tc_attr->store) |
c66ac9db NB |
1987 | return -EINVAL; |
1988 | ||
0fd97ccf | 1989 | return tc_attr->store(dev, page, count); |
c66ac9db NB |
1990 | } |
1991 | ||
1992 | static struct configfs_item_operations target_core_dev_item_ops = { | |
1993 | .release = target_core_dev_release, | |
1994 | .show_attribute = target_core_dev_show, | |
1995 | .store_attribute = target_core_dev_store, | |
1996 | }; | |
1997 | ||
73112edc | 1998 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 1999 | |
73112edc | 2000 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
2001 | |
2002 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2003 | ||
2004 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2005 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2006 | static struct target_core_alua_lu_gp_attribute \ | |
2007 | target_core_alua_lu_gp_##_name = \ | |
2008 | __CONFIGFS_EATTR(_name, _mode, \ | |
2009 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2010 | target_core_alua_lu_gp_store_attr_##_name); | |
2011 | ||
2012 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2013 | static struct target_core_alua_lu_gp_attribute \ | |
2014 | target_core_alua_lu_gp_##_name = \ | |
2015 | __CONFIGFS_EATTR_RO(_name, \ | |
2016 | target_core_alua_lu_gp_show_attr_##_name); | |
2017 | ||
2018 | /* | |
2019 | * lu_gp_id | |
2020 | */ | |
2021 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2022 | struct t10_alua_lu_gp *lu_gp, | |
2023 | char *page) | |
2024 | { | |
6708bb27 | 2025 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
2026 | return 0; |
2027 | ||
2028 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2029 | } | |
2030 | ||
2031 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2032 | struct t10_alua_lu_gp *lu_gp, | |
2033 | const char *page, | |
2034 | size_t count) | |
2035 | { | |
2036 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2037 | unsigned long lu_gp_id; | |
2038 | int ret; | |
2039 | ||
57103d7f | 2040 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 2041 | if (ret < 0) { |
57103d7f | 2042 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2043 | " lu_gp_id\n", ret); |
57103d7f | 2044 | return ret; |
c66ac9db NB |
2045 | } |
2046 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2047 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2048 | " 0x0000ffff\n", lu_gp_id); |
2049 | return -EINVAL; | |
2050 | } | |
2051 | ||
2052 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2053 | if (ret < 0) | |
2054 | return -EINVAL; | |
2055 | ||
6708bb27 | 2056 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2057 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2058 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2059 | lu_gp->lu_gp_id); | |
2060 | ||
2061 | return count; | |
2062 | } | |
2063 | ||
2064 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2065 | ||
2066 | /* | |
2067 | * members | |
2068 | */ | |
2069 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2070 | struct t10_alua_lu_gp *lu_gp, | |
2071 | char *page) | |
2072 | { | |
2073 | struct se_device *dev; | |
2074 | struct se_hba *hba; | |
c66ac9db NB |
2075 | struct t10_alua_lu_gp_member *lu_gp_mem; |
2076 | ssize_t len = 0, cur_len; | |
2077 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2078 | ||
2079 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2080 | ||
2081 | spin_lock(&lu_gp->lu_gp_lock); | |
2082 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2083 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 2084 | hba = dev->se_hba; |
c66ac9db NB |
2085 | |
2086 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2087 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2088 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
2089 | cur_len++; /* Extra byte for NULL terminator */ |
2090 | ||
2091 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2092 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2093 | "_members buffer\n"); |
2094 | break; | |
2095 | } | |
2096 | memcpy(page+len, buf, cur_len); | |
2097 | len += cur_len; | |
2098 | } | |
2099 | spin_unlock(&lu_gp->lu_gp_lock); | |
2100 | ||
2101 | return len; | |
2102 | } | |
2103 | ||
2104 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2105 | ||
2106 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2107 | ||
2108 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2109 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2110 | &target_core_alua_lu_gp_members.attr, | |
2111 | NULL, | |
2112 | }; | |
2113 | ||
1f6fe7cb NB |
2114 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2115 | { | |
2116 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2117 | struct t10_alua_lu_gp, lu_gp_group); | |
2118 | ||
2119 | core_alua_free_lu_gp(lu_gp); | |
2120 | } | |
2121 | ||
c66ac9db | 2122 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2123 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2124 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2125 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2126 | }; | |
2127 | ||
2128 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2129 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2130 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2131 | .ct_owner = THIS_MODULE, | |
2132 | }; | |
2133 | ||
2134 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2135 | ||
2136 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2137 | ||
2138 | static struct config_group *target_core_alua_create_lu_gp( | |
2139 | struct config_group *group, | |
2140 | const char *name) | |
2141 | { | |
2142 | struct t10_alua_lu_gp *lu_gp; | |
2143 | struct config_group *alua_lu_gp_cg = NULL; | |
2144 | struct config_item *alua_lu_gp_ci = NULL; | |
2145 | ||
2146 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2147 | if (IS_ERR(lu_gp)) | |
2148 | return NULL; | |
2149 | ||
2150 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2151 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2152 | ||
2153 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2154 | &target_core_alua_lu_gp_cit); | |
2155 | ||
6708bb27 | 2156 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2157 | " Group: core/alua/lu_gps/%s\n", |
2158 | config_item_name(alua_lu_gp_ci)); | |
2159 | ||
2160 | return alua_lu_gp_cg; | |
2161 | ||
2162 | } | |
2163 | ||
2164 | static void target_core_alua_drop_lu_gp( | |
2165 | struct config_group *group, | |
2166 | struct config_item *item) | |
2167 | { | |
2168 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2169 | struct t10_alua_lu_gp, lu_gp_group); | |
2170 | ||
6708bb27 | 2171 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2172 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2173 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2174 | /* |
2175 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2176 | * -> target_core_alua_lu_gp_release() | |
2177 | */ | |
c66ac9db | 2178 | config_item_put(item); |
c66ac9db NB |
2179 | } |
2180 | ||
2181 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2182 | .make_group = &target_core_alua_create_lu_gp, | |
2183 | .drop_item = &target_core_alua_drop_lu_gp, | |
2184 | }; | |
2185 | ||
2186 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2187 | .ct_item_ops = NULL, | |
2188 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2189 | .ct_owner = THIS_MODULE, | |
2190 | }; | |
2191 | ||
2192 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2193 | ||
2194 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2195 | ||
2196 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2197 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2198 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2199 | target_core_alua_tg_pt_gp_##_name = \ | |
2200 | __CONFIGFS_EATTR(_name, _mode, \ | |
2201 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2202 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2203 | ||
2204 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2205 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2206 | target_core_alua_tg_pt_gp_##_name = \ | |
2207 | __CONFIGFS_EATTR_RO(_name, \ | |
2208 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2209 | ||
2210 | /* | |
2211 | * alua_access_state | |
2212 | */ | |
2213 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2214 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2215 | char *page) | |
2216 | { | |
2217 | return sprintf(page, "%d\n", | |
2218 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2219 | } | |
2220 | ||
2221 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2222 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2223 | const char *page, | |
2224 | size_t count) | |
2225 | { | |
0fd97ccf | 2226 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2227 | unsigned long tmp; |
2228 | int new_state, ret; | |
2229 | ||
6708bb27 | 2230 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2231 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2232 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2233 | return -EINVAL; | |
2234 | } | |
f1453773 NB |
2235 | if (!(dev->dev_flags & DF_CONFIGURED)) { |
2236 | pr_err("Unable to set alua_access_state while device is" | |
2237 | " not configured\n"); | |
2238 | return -ENODEV; | |
2239 | } | |
c66ac9db | 2240 | |
57103d7f | 2241 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2242 | if (ret < 0) { |
6708bb27 | 2243 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2244 | " %s\n", page); |
57103d7f | 2245 | return ret; |
c66ac9db NB |
2246 | } |
2247 | new_state = (int)tmp; | |
2248 | ||
125d0119 HR |
2249 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2250 | pr_err("Unable to process implicit configfs ALUA" | |
2251 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2252 | return -EINVAL; |
2253 | } | |
c66094bf HR |
2254 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
2255 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
2256 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
2257 | pr_err("Unable to process implicit configfs ALUA transition" | |
2258 | " while explicit ALUA management is enabled\n"); | |
2259 | return -EINVAL; | |
2260 | } | |
c66ac9db | 2261 | |
0fd97ccf | 2262 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2263 | NULL, NULL, new_state, 0); |
2264 | return (!ret) ? count : -EINVAL; | |
2265 | } | |
2266 | ||
2267 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2268 | ||
2269 | /* | |
2270 | * alua_access_status | |
2271 | */ | |
2272 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2273 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2274 | char *page) | |
2275 | { | |
2276 | return sprintf(page, "%s\n", | |
2277 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2278 | } | |
2279 | ||
2280 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2281 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2282 | const char *page, | |
2283 | size_t count) | |
2284 | { | |
2285 | unsigned long tmp; | |
2286 | int new_status, ret; | |
2287 | ||
6708bb27 AG |
2288 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2289 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2290 | " valid tg_pt_gp ID: %hu\n", |
2291 | tg_pt_gp->tg_pt_gp_valid_id); | |
2292 | return -EINVAL; | |
2293 | } | |
2294 | ||
57103d7f | 2295 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2296 | if (ret < 0) { |
6708bb27 | 2297 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2298 | " from %s\n", page); |
57103d7f | 2299 | return ret; |
c66ac9db NB |
2300 | } |
2301 | new_status = (int)tmp; | |
2302 | ||
2303 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2304 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2305 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2306 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2307 | new_status); |
2308 | return -EINVAL; | |
2309 | } | |
2310 | ||
2311 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2312 | return count; | |
2313 | } | |
2314 | ||
2315 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2316 | ||
2317 | /* | |
2318 | * alua_access_type | |
2319 | */ | |
2320 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2321 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2322 | char *page) | |
2323 | { | |
2324 | return core_alua_show_access_type(tg_pt_gp, page); | |
2325 | } | |
2326 | ||
2327 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2328 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2329 | const char *page, | |
2330 | size_t count) | |
2331 | { | |
2332 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2333 | } | |
2334 | ||
2335 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2336 | ||
6be526c4 HR |
2337 | /* |
2338 | * alua_supported_states | |
2339 | */ | |
6be526c4 | 2340 | |
b0a382c5 HR |
2341 | #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ |
2342 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ | |
2343 | struct t10_alua_tg_pt_gp *t, char *p) \ | |
2344 | { \ | |
2345 | return sprintf(p, "%d\n", !!(t->_var & _bit)); \ | |
6be526c4 HR |
2346 | } |
2347 | ||
b0a382c5 HR |
2348 | #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ |
2349 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ | |
2350 | struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ | |
2351 | { \ | |
2352 | unsigned long tmp; \ | |
2353 | int ret; \ | |
2354 | \ | |
2355 | if (!t->tg_pt_gp_valid_id) { \ | |
2356 | pr_err("Unable to do set ##_name ALUA state on non" \ | |
2357 | " valid tg_pt_gp ID: %hu\n", \ | |
2358 | t->tg_pt_gp_valid_id); \ | |
2359 | return -EINVAL; \ | |
2360 | } \ | |
2361 | \ | |
2362 | ret = kstrtoul(p, 0, &tmp); \ | |
2363 | if (ret < 0) { \ | |
2364 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2365 | return -EINVAL; \ | |
2366 | } \ | |
2367 | if (tmp > 1) { \ | |
2368 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2369 | return -EINVAL; \ | |
2370 | } \ | |
1f0b030c | 2371 | if (tmp) \ |
b0a382c5 HR |
2372 | t->_var |= _bit; \ |
2373 | else \ | |
2374 | t->_var &= ~_bit; \ | |
2375 | \ | |
2376 | return c; \ | |
2377 | } | |
2378 | ||
2379 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, | |
2380 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2381 | SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, | |
2382 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2383 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); | |
2384 | ||
2385 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, | |
2386 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2387 | SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, | |
2388 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2389 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); | |
2390 | ||
2391 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, | |
2392 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
2393 | SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, | |
2394 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
c66094bf | 2395 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); |
b0a382c5 HR |
2396 | |
2397 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, | |
2398 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2399 | SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, | |
2400 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2401 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); | |
2402 | ||
2403 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, | |
2404 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2405 | SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, | |
2406 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2407 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); | |
2408 | ||
2409 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, | |
2410 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2411 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, | |
2412 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2413 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); | |
2414 | ||
2415 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, | |
2416 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2417 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, | |
2418 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2419 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); | |
6be526c4 | 2420 | |
c66ac9db NB |
2421 | /* |
2422 | * alua_write_metadata | |
2423 | */ | |
2424 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2425 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2426 | char *page) | |
2427 | { | |
2428 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2429 | } | |
2430 | ||
2431 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2432 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2433 | const char *page, | |
2434 | size_t count) | |
2435 | { | |
2436 | unsigned long tmp; | |
2437 | int ret; | |
2438 | ||
57103d7f | 2439 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2440 | if (ret < 0) { |
6708bb27 | 2441 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2442 | return ret; |
c66ac9db NB |
2443 | } |
2444 | ||
2445 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2446 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2447 | " %lu\n", tmp); |
2448 | return -EINVAL; | |
2449 | } | |
2450 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2451 | ||
2452 | return count; | |
2453 | } | |
2454 | ||
2455 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2456 | ||
2457 | ||
2458 | ||
2459 | /* | |
2460 | * nonop_delay_msecs | |
2461 | */ | |
2462 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2463 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2464 | char *page) | |
2465 | { | |
2466 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2467 | ||
2468 | } | |
2469 | ||
2470 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2471 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2472 | const char *page, | |
2473 | size_t count) | |
2474 | { | |
2475 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2476 | } | |
2477 | ||
2478 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2479 | ||
2480 | /* | |
2481 | * trans_delay_msecs | |
2482 | */ | |
2483 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2484 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2485 | char *page) | |
2486 | { | |
2487 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2488 | } | |
2489 | ||
2490 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2491 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2492 | const char *page, | |
2493 | size_t count) | |
2494 | { | |
2495 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2496 | } | |
2497 | ||
2498 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2499 | ||
5b9a4d72 | 2500 | /* |
125d0119 | 2501 | * implicit_trans_secs |
5b9a4d72 | 2502 | */ |
125d0119 | 2503 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( |
5b9a4d72 NB |
2504 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2505 | char *page) | |
2506 | { | |
125d0119 | 2507 | return core_alua_show_implicit_trans_secs(tg_pt_gp, page); |
5b9a4d72 NB |
2508 | } |
2509 | ||
125d0119 | 2510 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( |
5b9a4d72 NB |
2511 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2512 | const char *page, | |
2513 | size_t count) | |
2514 | { | |
125d0119 | 2515 | return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); |
5b9a4d72 NB |
2516 | } |
2517 | ||
125d0119 | 2518 | SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); |
5b9a4d72 | 2519 | |
c66ac9db NB |
2520 | /* |
2521 | * preferred | |
2522 | */ | |
2523 | ||
2524 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2525 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2526 | char *page) | |
2527 | { | |
2528 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2529 | } | |
2530 | ||
2531 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2532 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2533 | const char *page, | |
2534 | size_t count) | |
2535 | { | |
2536 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2537 | } | |
2538 | ||
2539 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2540 | ||
2541 | /* | |
2542 | * tg_pt_gp_id | |
2543 | */ | |
2544 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2545 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2546 | char *page) | |
2547 | { | |
6708bb27 | 2548 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2549 | return 0; |
2550 | ||
2551 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2552 | } | |
2553 | ||
2554 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2555 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2556 | const char *page, | |
2557 | size_t count) | |
2558 | { | |
2559 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2560 | unsigned long tg_pt_gp_id; | |
2561 | int ret; | |
2562 | ||
57103d7f | 2563 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2564 | if (ret < 0) { |
57103d7f | 2565 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2566 | " tg_pt_gp_id\n", ret); |
57103d7f | 2567 | return ret; |
c66ac9db NB |
2568 | } |
2569 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2570 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2571 | " 0x0000ffff\n", tg_pt_gp_id); |
2572 | return -EINVAL; | |
2573 | } | |
2574 | ||
2575 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2576 | if (ret < 0) | |
2577 | return -EINVAL; | |
2578 | ||
6708bb27 | 2579 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2580 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2581 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2582 | tg_pt_gp->tg_pt_gp_id); | |
2583 | ||
2584 | return count; | |
2585 | } | |
2586 | ||
2587 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2588 | ||
2589 | /* | |
2590 | * members | |
2591 | */ | |
2592 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2593 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2594 | char *page) | |
2595 | { | |
2596 | struct se_port *port; | |
2597 | struct se_portal_group *tpg; | |
2598 | struct se_lun *lun; | |
2599 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2600 | ssize_t len = 0, cur_len; | |
2601 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2602 | ||
2603 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2604 | ||
2605 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2606 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2607 | tg_pt_gp_mem_list) { | |
2608 | port = tg_pt_gp_mem->tg_pt; | |
2609 | tpg = port->sep_tpg; | |
2610 | lun = port->sep_lun; | |
2611 | ||
2612 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2613 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2614 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2615 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2616 | config_item_name(&lun->lun_group.cg_item)); |
2617 | cur_len++; /* Extra byte for NULL terminator */ | |
2618 | ||
2619 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2620 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2621 | "_members buffer\n"); |
2622 | break; | |
2623 | } | |
2624 | memcpy(page+len, buf, cur_len); | |
2625 | len += cur_len; | |
2626 | } | |
2627 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2628 | ||
2629 | return len; | |
2630 | } | |
2631 | ||
2632 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2633 | ||
2634 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2635 | tg_pt_gp_group); | |
2636 | ||
2637 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2638 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2639 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2640 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
b0a382c5 HR |
2641 | &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, |
2642 | &target_core_alua_tg_pt_gp_alua_support_offline.attr, | |
2643 | &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, | |
2644 | &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, | |
2645 | &target_core_alua_tg_pt_gp_alua_support_standby.attr, | |
2646 | &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, | |
2647 | &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, | |
c66ac9db NB |
2648 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, |
2649 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2650 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
125d0119 | 2651 | &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, |
c66ac9db NB |
2652 | &target_core_alua_tg_pt_gp_preferred.attr, |
2653 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2654 | &target_core_alua_tg_pt_gp_members.attr, | |
2655 | NULL, | |
2656 | }; | |
2657 | ||
1f6fe7cb NB |
2658 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2659 | { | |
2660 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2661 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2662 | ||
2663 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2664 | } | |
2665 | ||
c66ac9db | 2666 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2667 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2668 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2669 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2670 | }; | |
2671 | ||
2672 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2673 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2674 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2675 | .ct_owner = THIS_MODULE, | |
2676 | }; | |
2677 | ||
2678 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2679 | ||
72aca57b | 2680 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2681 | |
2682 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2683 | struct config_group *group, | |
2684 | const char *name) | |
2685 | { | |
2686 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2687 | alua_tg_pt_gps_group); | |
2688 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2689 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2690 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2691 | ||
0fd97ccf | 2692 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2693 | if (!tg_pt_gp) |
c66ac9db NB |
2694 | return NULL; |
2695 | ||
2696 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2697 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2698 | ||
2699 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2700 | &target_core_alua_tg_pt_gp_cit); | |
2701 | ||
6708bb27 | 2702 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2703 | " Group: alua/tg_pt_gps/%s\n", |
2704 | config_item_name(alua_tg_pt_gp_ci)); | |
2705 | ||
2706 | return alua_tg_pt_gp_cg; | |
2707 | } | |
2708 | ||
2709 | static void target_core_alua_drop_tg_pt_gp( | |
2710 | struct config_group *group, | |
2711 | struct config_item *item) | |
2712 | { | |
2713 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2714 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2715 | ||
6708bb27 | 2716 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2717 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2718 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2719 | /* |
2720 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2721 | * -> target_core_alua_tg_pt_gp_release(). | |
2722 | */ | |
c66ac9db | 2723 | config_item_put(item); |
c66ac9db NB |
2724 | } |
2725 | ||
2726 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2727 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2728 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2729 | }; | |
2730 | ||
72aca57b | 2731 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 2732 | |
72aca57b | 2733 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2734 | |
2735 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2736 | ||
2737 | /* | |
2738 | * target_core_alua_cit is a ConfigFS group that lives under | |
2739 | * /sys/kernel/config/target/core/alua. There are default groups | |
2740 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2741 | * target_core_alua_cit in target_core_init_configfs() below. | |
2742 | */ | |
2743 | static struct config_item_type target_core_alua_cit = { | |
2744 | .ct_item_ops = NULL, | |
2745 | .ct_attrs = NULL, | |
2746 | .ct_owner = THIS_MODULE, | |
2747 | }; | |
2748 | ||
2749 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2750 | ||
12d23384 NB |
2751 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2752 | ||
2753 | static struct config_group *target_core_stat_mkdir( | |
2754 | struct config_group *group, | |
2755 | const char *name) | |
2756 | { | |
2757 | return ERR_PTR(-ENOSYS); | |
2758 | } | |
2759 | ||
2760 | static void target_core_stat_rmdir( | |
2761 | struct config_group *group, | |
2762 | struct config_item *item) | |
2763 | { | |
2764 | return; | |
2765 | } | |
2766 | ||
2767 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2768 | .make_group = &target_core_stat_mkdir, | |
2769 | .drop_item = &target_core_stat_rmdir, | |
2770 | }; | |
2771 | ||
2772 | static struct config_item_type target_core_stat_cit = { | |
2773 | .ct_group_ops = &target_core_stat_group_ops, | |
2774 | .ct_owner = THIS_MODULE, | |
2775 | }; | |
2776 | ||
2777 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2778 | ||
c66ac9db NB |
2779 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2780 | ||
2781 | static struct config_group *target_core_make_subdev( | |
2782 | struct config_group *group, | |
2783 | const char *name) | |
2784 | { | |
2785 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2786 | struct se_subsystem_api *t; |
2787 | struct config_item *hba_ci = &group->cg_item; | |
2788 | struct se_hba *hba = item_to_hba(hba_ci); | |
0fd97ccf | 2789 | struct se_device *dev; |
c66ac9db | 2790 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
2791 | struct config_group *dev_stat_grp = NULL; |
2792 | int errno = -ENOMEM, ret; | |
c66ac9db | 2793 | |
12d23384 NB |
2794 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2795 | if (ret) | |
2796 | return ERR_PTR(ret); | |
c66ac9db NB |
2797 | /* |
2798 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2799 | */ | |
2800 | t = hba->transport; | |
2801 | ||
0fd97ccf CH |
2802 | dev = target_alloc_device(hba, name); |
2803 | if (!dev) | |
2804 | goto out_unlock; | |
2805 | ||
2806 | dev_cg = &dev->dev_group; | |
c66ac9db | 2807 | |
13f6a914 | 2808 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
c66ac9db | 2809 | GFP_KERNEL); |
6708bb27 | 2810 | if (!dev_cg->default_groups) |
0fd97ccf | 2811 | goto out_free_device; |
c66ac9db | 2812 | |
73112edc | 2813 | config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); |
0fd97ccf | 2814 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
f79a897e | 2815 | &t->tb_cits.tb_dev_attrib_cit); |
0fd97ccf | 2816 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
91e2e39b | 2817 | &t->tb_cits.tb_dev_pr_cit); |
0fd97ccf | 2818 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
f8d389c6 | 2819 | &t->tb_cits.tb_dev_wwn_cit); |
0fd97ccf | 2820 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
72aca57b | 2821 | "alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit); |
0fd97ccf | 2822 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
12d23384 NB |
2823 | "statistics", &target_core_stat_cit); |
2824 | ||
0fd97ccf CH |
2825 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
2826 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
2827 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
2828 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
2829 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 2830 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 2831 | /* |
12d23384 | 2832 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2833 | */ |
0fd97ccf | 2834 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2835 | if (!tg_pt_gp) |
0fd97ccf CH |
2836 | goto out_free_dev_cg_default_groups; |
2837 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 2838 | |
0fd97ccf | 2839 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
13f6a914 | 2840 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2841 | GFP_KERNEL); |
6708bb27 AG |
2842 | if (!tg_pt_gp_cg->default_groups) { |
2843 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 2844 | "default_groups\n"); |
0fd97ccf | 2845 | goto out_free_tg_pt_gp; |
c66ac9db NB |
2846 | } |
2847 | ||
2848 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2849 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2850 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2851 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
2852 | /* |
2853 | * Add core/$HBA/$DEV/statistics/ default groups | |
2854 | */ | |
0fd97ccf | 2855 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
13f6a914 | 2856 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
12d23384 NB |
2857 | GFP_KERNEL); |
2858 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2859 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 2860 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 2861 | } |
0fd97ccf | 2862 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2863 | |
2864 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
2865 | return dev_cg; |
2866 | ||
2867 | out_free_tg_pt_gp_cg_default_groups: | |
2868 | kfree(tg_pt_gp_cg->default_groups); | |
2869 | out_free_tg_pt_gp: | |
2870 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2871 | out_free_dev_cg_default_groups: | |
2872 | kfree(dev_cg->default_groups); | |
2873 | out_free_device: | |
2874 | target_free_device(dev); | |
2875 | out_unlock: | |
c66ac9db | 2876 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2877 | return ERR_PTR(errno); |
c66ac9db NB |
2878 | } |
2879 | ||
2880 | static void target_core_drop_subdev( | |
2881 | struct config_group *group, | |
2882 | struct config_item *item) | |
2883 | { | |
0fd97ccf CH |
2884 | struct config_group *dev_cg = to_config_group(item); |
2885 | struct se_device *dev = | |
2886 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2887 | struct se_hba *hba; |
c66ac9db | 2888 | struct config_item *df_item; |
0fd97ccf | 2889 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2890 | int i; |
c66ac9db | 2891 | |
0fd97ccf | 2892 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 2893 | |
1f6fe7cb | 2894 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2895 | |
0fd97ccf | 2896 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2897 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2898 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2899 | dev_stat_grp->default_groups[i] = NULL; | |
2900 | config_item_put(df_item); | |
2901 | } | |
2902 | kfree(dev_stat_grp->default_groups); | |
2903 | ||
0fd97ccf | 2904 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2905 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2906 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2907 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2908 | config_item_put(df_item); | |
2909 | } | |
2910 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2911 | /* |
2912 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2913 | * directly from target_core_alua_tg_pt_gp_release(). | |
2914 | */ | |
0fd97ccf | 2915 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 2916 | |
c66ac9db NB |
2917 | for (i = 0; dev_cg->default_groups[i]; i++) { |
2918 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2919 | dev_cg->default_groups[i] = NULL; | |
2920 | config_item_put(df_item); | |
2921 | } | |
c66ac9db | 2922 | /* |
0fd97ccf | 2923 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 2924 | */ |
1f6fe7cb | 2925 | config_item_put(item); |
c66ac9db | 2926 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2927 | } |
2928 | ||
2929 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2930 | .make_group = target_core_make_subdev, | |
2931 | .drop_item = target_core_drop_subdev, | |
2932 | }; | |
2933 | ||
2934 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2935 | #define SE_HBA_ATTR(_name, _mode) \ | |
2936 | static struct target_core_hba_attribute \ | |
2937 | target_core_hba_##_name = \ | |
2938 | __CONFIGFS_EATTR(_name, _mode, \ | |
2939 | target_core_hba_show_attr_##_name, \ | |
2940 | target_core_hba_store_attr_##_name); | |
2941 | ||
2942 | #define SE_HBA_ATTR_RO(_name) \ | |
2943 | static struct target_core_hba_attribute \ | |
2944 | target_core_hba_##_name = \ | |
2945 | __CONFIGFS_EATTR_RO(_name, \ | |
2946 | target_core_hba_show_attr_##_name); | |
2947 | ||
2948 | static ssize_t target_core_hba_show_attr_hba_info( | |
2949 | struct se_hba *hba, | |
2950 | char *page) | |
2951 | { | |
2952 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2953 | hba->hba_id, hba->transport->name, | |
2954 | TARGET_CORE_CONFIGFS_VERSION); | |
2955 | } | |
2956 | ||
2957 | SE_HBA_ATTR_RO(hba_info); | |
2958 | ||
2959 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2960 | char *page) | |
2961 | { | |
2962 | int hba_mode = 0; | |
2963 | ||
2964 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2965 | hba_mode = 1; | |
2966 | ||
2967 | return sprintf(page, "%d\n", hba_mode); | |
2968 | } | |
2969 | ||
2970 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2971 | const char *page, size_t count) | |
2972 | { | |
2973 | struct se_subsystem_api *transport = hba->transport; | |
2974 | unsigned long mode_flag; | |
2975 | int ret; | |
2976 | ||
2977 | if (transport->pmode_enable_hba == NULL) | |
2978 | return -EINVAL; | |
2979 | ||
57103d7f | 2980 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 2981 | if (ret < 0) { |
6708bb27 | 2982 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 2983 | return ret; |
c66ac9db NB |
2984 | } |
2985 | ||
0fd97ccf | 2986 | if (hba->dev_count) { |
6708bb27 | 2987 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
2988 | return -EINVAL; |
2989 | } | |
c66ac9db NB |
2990 | |
2991 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2992 | if (ret < 0) | |
2993 | return -EINVAL; | |
2994 | if (ret > 0) | |
2995 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2996 | else if (ret == 0) | |
2997 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2998 | ||
2999 | return count; | |
3000 | } | |
3001 | ||
3002 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
3003 | ||
3004 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
3005 | ||
1f6fe7cb NB |
3006 | static void target_core_hba_release(struct config_item *item) |
3007 | { | |
3008 | struct se_hba *hba = container_of(to_config_group(item), | |
3009 | struct se_hba, hba_group); | |
3010 | core_delete_hba(hba); | |
3011 | } | |
3012 | ||
c66ac9db NB |
3013 | static struct configfs_attribute *target_core_hba_attrs[] = { |
3014 | &target_core_hba_hba_info.attr, | |
3015 | &target_core_hba_hba_mode.attr, | |
3016 | NULL, | |
3017 | }; | |
3018 | ||
3019 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3020 | .release = target_core_hba_release, |
c66ac9db NB |
3021 | .show_attribute = target_core_hba_attr_show, |
3022 | .store_attribute = target_core_hba_attr_store, | |
3023 | }; | |
3024 | ||
3025 | static struct config_item_type target_core_hba_cit = { | |
3026 | .ct_item_ops = &target_core_hba_item_ops, | |
3027 | .ct_group_ops = &target_core_hba_group_ops, | |
3028 | .ct_attrs = target_core_hba_attrs, | |
3029 | .ct_owner = THIS_MODULE, | |
3030 | }; | |
3031 | ||
3032 | static struct config_group *target_core_call_addhbatotarget( | |
3033 | struct config_group *group, | |
3034 | const char *name) | |
3035 | { | |
3036 | char *se_plugin_str, *str, *str2; | |
3037 | struct se_hba *hba; | |
3038 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3039 | unsigned long plugin_dep_id = 0; | |
3040 | int ret; | |
3041 | ||
3042 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3043 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3044 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3045 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3046 | TARGET_CORE_NAME_MAX_LEN); | |
3047 | return ERR_PTR(-ENAMETOOLONG); | |
3048 | } | |
3049 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3050 | ||
3051 | str = strstr(buf, "_"); | |
6708bb27 AG |
3052 | if (!str) { |
3053 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3054 | return ERR_PTR(-EINVAL); |
3055 | } | |
3056 | se_plugin_str = buf; | |
3057 | /* | |
3058 | * Special case for subsystem plugins that have "_" in their names. | |
3059 | * Namely rd_direct and rd_mcp.. | |
3060 | */ | |
3061 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3062 | if (str2) { |
c66ac9db NB |
3063 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3064 | str2++; /* Skip to start of plugin dependent ID */ | |
3065 | str = str2; | |
3066 | } else { | |
3067 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3068 | str++; /* Skip to start of plugin dependent ID */ | |
3069 | } | |
3070 | ||
57103d7f | 3071 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 3072 | if (ret < 0) { |
57103d7f | 3073 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 3074 | " plugin_dep_id\n", ret); |
57103d7f | 3075 | return ERR_PTR(ret); |
c66ac9db NB |
3076 | } |
3077 | /* | |
3078 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3079 | */ | |
dbc5623e | 3080 | transport_subsystem_check_init(); |
c66ac9db NB |
3081 | |
3082 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3083 | if (IS_ERR(hba)) | |
3084 | return ERR_CAST(hba); | |
3085 | ||
3086 | config_group_init_type_name(&hba->hba_group, name, | |
3087 | &target_core_hba_cit); | |
3088 | ||
3089 | return &hba->hba_group; | |
3090 | } | |
3091 | ||
3092 | static void target_core_call_delhbafromtarget( | |
3093 | struct config_group *group, | |
3094 | struct config_item *item) | |
3095 | { | |
1f6fe7cb NB |
3096 | /* |
3097 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3098 | * -> target_core_hba_release() | |
3099 | */ | |
c66ac9db | 3100 | config_item_put(item); |
c66ac9db NB |
3101 | } |
3102 | ||
3103 | static struct configfs_group_operations target_core_group_ops = { | |
3104 | .make_group = target_core_call_addhbatotarget, | |
3105 | .drop_item = target_core_call_delhbafromtarget, | |
3106 | }; | |
3107 | ||
3108 | static struct config_item_type target_core_cit = { | |
3109 | .ct_item_ops = NULL, | |
3110 | .ct_group_ops = &target_core_group_ops, | |
3111 | .ct_attrs = NULL, | |
3112 | .ct_owner = THIS_MODULE, | |
3113 | }; | |
3114 | ||
3115 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3116 | ||
73112edc NB |
3117 | void target_core_setup_sub_cits(struct se_subsystem_api *sa) |
3118 | { | |
3119 | target_core_setup_dev_cit(sa); | |
f79a897e | 3120 | target_core_setup_dev_attrib_cit(sa); |
91e2e39b | 3121 | target_core_setup_dev_pr_cit(sa); |
f8d389c6 | 3122 | target_core_setup_dev_wwn_cit(sa); |
72aca57b | 3123 | target_core_setup_dev_alua_tg_pt_gps_cit(sa); |
73112edc NB |
3124 | } |
3125 | EXPORT_SYMBOL(target_core_setup_sub_cits); | |
3126 | ||
54550fab | 3127 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3128 | { |
3129 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3130 | struct config_group *lu_gp_cg = NULL; | |
3131 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3132 | struct t10_alua_lu_gp *lu_gp; |
3133 | int ret; | |
3134 | ||
6708bb27 | 3135 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3136 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3137 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3138 | ||
3139 | subsys = target_core_subsystem[0]; | |
3140 | config_group_init(&subsys->su_group); | |
3141 | mutex_init(&subsys->su_mutex); | |
3142 | ||
e3d6f909 | 3143 | ret = init_se_kmem_caches(); |
c66ac9db | 3144 | if (ret < 0) |
e3d6f909 | 3145 | return ret; |
c66ac9db NB |
3146 | /* |
3147 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3148 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3149 | */ | |
3150 | target_cg = &subsys->su_group; | |
ab6dae82 | 3151 | target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3152 | GFP_KERNEL); |
6708bb27 AG |
3153 | if (!target_cg->default_groups) { |
3154 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 3155 | ret = -ENOMEM; |
c66ac9db NB |
3156 | goto out_global; |
3157 | } | |
3158 | ||
e3d6f909 | 3159 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3160 | "core", &target_core_cit); |
e3d6f909 | 3161 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3162 | target_cg->default_groups[1] = NULL; |
3163 | /* | |
3164 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3165 | */ | |
e3d6f909 | 3166 | hba_cg = &target_core_hbagroup; |
13f6a914 | 3167 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3168 | GFP_KERNEL); |
6708bb27 AG |
3169 | if (!hba_cg->default_groups) { |
3170 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 3171 | ret = -ENOMEM; |
c66ac9db NB |
3172 | goto out_global; |
3173 | } | |
e3d6f909 | 3174 | config_group_init_type_name(&alua_group, |
c66ac9db | 3175 | "alua", &target_core_alua_cit); |
e3d6f909 | 3176 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3177 | hba_cg->default_groups[1] = NULL; |
3178 | /* | |
3179 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3180 | * groups under /sys/kernel/config/target/core/alua/ | |
3181 | */ | |
e3d6f909 | 3182 | alua_cg = &alua_group; |
13f6a914 | 3183 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3184 | GFP_KERNEL); |
6708bb27 AG |
3185 | if (!alua_cg->default_groups) { |
3186 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 3187 | ret = -ENOMEM; |
c66ac9db NB |
3188 | goto out_global; |
3189 | } | |
3190 | ||
e3d6f909 | 3191 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3192 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3193 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3194 | alua_cg->default_groups[1] = NULL; |
3195 | /* | |
3196 | * Add core/alua/lu_gps/default_lu_gp | |
3197 | */ | |
3198 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
3199 | if (IS_ERR(lu_gp)) { |
3200 | ret = -ENOMEM; | |
c66ac9db | 3201 | goto out_global; |
37bb7899 | 3202 | } |
c66ac9db | 3203 | |
e3d6f909 | 3204 | lu_gp_cg = &alua_lu_gps_group; |
13f6a914 | 3205 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3206 | GFP_KERNEL); |
6708bb27 AG |
3207 | if (!lu_gp_cg->default_groups) { |
3208 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 3209 | ret = -ENOMEM; |
c66ac9db NB |
3210 | goto out_global; |
3211 | } | |
3212 | ||
3213 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3214 | &target_core_alua_lu_gp_cit); | |
3215 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3216 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3217 | default_lu_gp = lu_gp; |
c66ac9db NB |
3218 | /* |
3219 | * Register the target_core_mod subsystem with configfs. | |
3220 | */ | |
3221 | ret = configfs_register_subsystem(subsys); | |
3222 | if (ret < 0) { | |
6708bb27 | 3223 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3224 | ret, subsys->su_group.cg_item.ci_namebuf); |
3225 | goto out_global; | |
3226 | } | |
6708bb27 | 3227 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
3228 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
3229 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3230 | /* | |
3231 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3232 | */ | |
3233 | ret = rd_module_init(); | |
3234 | if (ret < 0) | |
3235 | goto out; | |
3236 | ||
0d0f9dfb RD |
3237 | ret = core_dev_setup_virtual_lun0(); |
3238 | if (ret < 0) | |
c66ac9db NB |
3239 | goto out; |
3240 | ||
f99715ac NB |
3241 | ret = target_xcopy_setup_pt(); |
3242 | if (ret < 0) | |
3243 | goto out; | |
3244 | ||
c66ac9db NB |
3245 | return 0; |
3246 | ||
3247 | out: | |
3248 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3249 | core_dev_release_virtual_lun0(); |
3250 | rd_module_exit(); | |
3251 | out_global: | |
e3d6f909 AG |
3252 | if (default_lu_gp) { |
3253 | core_alua_free_lu_gp(default_lu_gp); | |
3254 | default_lu_gp = NULL; | |
c66ac9db NB |
3255 | } |
3256 | if (lu_gp_cg) | |
3257 | kfree(lu_gp_cg->default_groups); | |
3258 | if (alua_cg) | |
3259 | kfree(alua_cg->default_groups); | |
3260 | if (hba_cg) | |
3261 | kfree(hba_cg->default_groups); | |
3262 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3263 | release_se_kmem_caches(); |
3264 | return ret; | |
c66ac9db NB |
3265 | } |
3266 | ||
54550fab | 3267 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3268 | { |
3269 | struct configfs_subsystem *subsys; | |
3270 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3271 | struct config_item *item; | |
3272 | int i; | |
3273 | ||
c66ac9db NB |
3274 | subsys = target_core_subsystem[0]; |
3275 | ||
e3d6f909 | 3276 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3277 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3278 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3279 | lu_gp_cg->default_groups[i] = NULL; | |
3280 | config_item_put(item); | |
3281 | } | |
3282 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3283 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3284 | |
e3d6f909 | 3285 | alua_cg = &alua_group; |
c66ac9db NB |
3286 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3287 | item = &alua_cg->default_groups[i]->cg_item; | |
3288 | alua_cg->default_groups[i] = NULL; | |
3289 | config_item_put(item); | |
3290 | } | |
3291 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3292 | alua_cg->default_groups = NULL; |
c66ac9db | 3293 | |
e3d6f909 | 3294 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3295 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3296 | item = &hba_cg->default_groups[i]->cg_item; | |
3297 | hba_cg->default_groups[i] = NULL; | |
3298 | config_item_put(item); | |
3299 | } | |
3300 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3301 | hba_cg->default_groups = NULL; |
3302 | /* | |
3303 | * We expect subsys->su_group.default_groups to be released | |
3304 | * by configfs subsystem provider logic.. | |
3305 | */ | |
3306 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3307 | kfree(subsys->su_group.default_groups); |
3308 | ||
e3d6f909 AG |
3309 | core_alua_free_lu_gp(default_lu_gp); |
3310 | default_lu_gp = NULL; | |
7c2bf6e9 | 3311 | |
6708bb27 | 3312 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3313 | " Infrastructure\n"); |
3314 | ||
c66ac9db NB |
3315 | core_dev_release_virtual_lun0(); |
3316 | rd_module_exit(); | |
f99715ac | 3317 | target_xcopy_release_pt(); |
e3d6f909 | 3318 | release_se_kmem_caches(); |
c66ac9db NB |
3319 | } |
3320 | ||
3321 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3322 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3323 | MODULE_LICENSE("GPL"); | |
3324 | ||
3325 | module_init(target_core_init_configfs); | |
3326 | module_exit(target_core_exit_configfs); |