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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 | * | |
12d23384 NB |
6 | * Copyright (c) 2008-2011 Rising Tide Systems |
7 | * Copyright (c) 2008-2011 Linux-iSCSI.org | |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | ****************************************************************************/ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
c66ac9db NB |
26 | #include <generated/utsrelease.h> |
27 | #include <linux/utsname.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/fs.h> | |
30 | #include <linux/namei.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/unistd.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/parser.h> | |
37 | #include <linux/syscalls.h> | |
38 | #include <linux/configfs.h> | |
e3d6f909 | 39 | #include <linux/spinlock.h> |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
42 | #include <target/target_core_device.h> | |
43 | #include <target/target_core_transport.h> | |
44 | #include <target/target_core_fabric_ops.h> | |
45 | #include <target/target_core_fabric_configfs.h> | |
46 | #include <target/target_core_configfs.h> | |
47 | #include <target/configfs_macros.h> | |
48 | ||
49 | #include "target_core_alua.h" | |
50 | #include "target_core_hba.h" | |
51 | #include "target_core_pr.h" | |
52 | #include "target_core_rd.h" | |
12d23384 | 53 | #include "target_core_stat.h" |
c66ac9db | 54 | |
e3d6f909 AG |
55 | extern struct t10_alua_lu_gp *default_lu_gp; |
56 | ||
c66ac9db NB |
57 | static struct list_head g_tf_list; |
58 | static struct mutex g_tf_lock; | |
59 | ||
60 | struct target_core_configfs_attribute { | |
61 | struct configfs_attribute attr; | |
62 | ssize_t (*show)(void *, char *); | |
63 | ssize_t (*store)(void *, const char *, size_t); | |
64 | }; | |
65 | ||
e3d6f909 AG |
66 | static struct config_group target_core_hbagroup; |
67 | static struct config_group alua_group; | |
68 | static struct config_group alua_lu_gps_group; | |
69 | ||
70 | static DEFINE_SPINLOCK(se_device_lock); | |
71 | static LIST_HEAD(se_dev_list); | |
72 | ||
c66ac9db NB |
73 | static inline struct se_hba * |
74 | item_to_hba(struct config_item *item) | |
75 | { | |
76 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
77 | } | |
78 | ||
79 | /* | |
80 | * Attributes for /sys/kernel/config/target/ | |
81 | */ | |
82 | static ssize_t target_core_attr_show(struct config_item *item, | |
83 | struct configfs_attribute *attr, | |
84 | char *page) | |
85 | { | |
86 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
87 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
88 | utsname()->sysname, utsname()->machine); | |
89 | } | |
90 | ||
91 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
92 | .show_attribute = target_core_attr_show, | |
93 | }; | |
94 | ||
95 | static struct configfs_attribute target_core_item_attr_version = { | |
96 | .ca_owner = THIS_MODULE, | |
97 | .ca_name = "version", | |
98 | .ca_mode = S_IRUGO, | |
99 | }; | |
100 | ||
101 | static struct target_fabric_configfs *target_core_get_fabric( | |
102 | const char *name) | |
103 | { | |
104 | struct target_fabric_configfs *tf; | |
105 | ||
6708bb27 | 106 | if (!name) |
c66ac9db NB |
107 | return NULL; |
108 | ||
109 | mutex_lock(&g_tf_lock); | |
110 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
6708bb27 | 111 | if (!strcmp(tf->tf_name, name)) { |
c66ac9db NB |
112 | atomic_inc(&tf->tf_access_cnt); |
113 | mutex_unlock(&g_tf_lock); | |
114 | return tf; | |
115 | } | |
116 | } | |
117 | mutex_unlock(&g_tf_lock); | |
118 | ||
119 | return NULL; | |
120 | } | |
121 | ||
122 | /* | |
123 | * Called from struct target_core_group_ops->make_group() | |
124 | */ | |
125 | static struct config_group *target_core_register_fabric( | |
126 | struct config_group *group, | |
127 | const char *name) | |
128 | { | |
129 | struct target_fabric_configfs *tf; | |
130 | int ret; | |
131 | ||
6708bb27 | 132 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 133 | " %s\n", group, name); |
c66ac9db NB |
134 | /* |
135 | * Below are some hardcoded request_module() calls to automatically | |
136 | * local fabric modules when the following is called: | |
137 | * | |
138 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME | |
139 | * | |
140 | * Note that this does not limit which TCM fabric module can be | |
141 | * registered, but simply provids auto loading logic for modules with | |
142 | * mkdir(2) system calls with known TCM fabric modules. | |
143 | */ | |
6708bb27 | 144 | if (!strncmp(name, "iscsi", 5)) { |
c66ac9db NB |
145 | /* |
146 | * Automatically load the LIO Target fabric module when the | |
147 | * following is called: | |
148 | * | |
149 | * mkdir -p $CONFIGFS/target/iscsi | |
150 | */ | |
151 | ret = request_module("iscsi_target_mod"); | |
152 | if (ret < 0) { | |
6708bb27 | 153 | pr_err("request_module() failed for" |
c66ac9db NB |
154 | " iscsi_target_mod.ko: %d\n", ret); |
155 | return ERR_PTR(-EINVAL); | |
156 | } | |
6708bb27 | 157 | } else if (!strncmp(name, "loopback", 8)) { |
c66ac9db NB |
158 | /* |
159 | * Automatically load the tcm_loop fabric module when the | |
160 | * following is called: | |
161 | * | |
162 | * mkdir -p $CONFIGFS/target/loopback | |
163 | */ | |
164 | ret = request_module("tcm_loop"); | |
165 | if (ret < 0) { | |
6708bb27 | 166 | pr_err("request_module() failed for" |
c66ac9db NB |
167 | " tcm_loop.ko: %d\n", ret); |
168 | return ERR_PTR(-EINVAL); | |
169 | } | |
170 | } | |
171 | ||
172 | tf = target_core_get_fabric(name); | |
6708bb27 AG |
173 | if (!tf) { |
174 | pr_err("target_core_get_fabric() failed for %s\n", | |
c66ac9db NB |
175 | name); |
176 | return ERR_PTR(-EINVAL); | |
177 | } | |
6708bb27 | 178 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
c66ac9db NB |
179 | " %s\n", tf->tf_name); |
180 | /* | |
181 | * On a successful target_core_get_fabric() look, the returned | |
182 | * struct target_fabric_configfs *tf will contain a usage reference. | |
183 | */ | |
6708bb27 | 184 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
c66ac9db NB |
185 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); |
186 | ||
187 | tf->tf_group.default_groups = tf->tf_default_groups; | |
188 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
189 | tf->tf_group.default_groups[1] = NULL; | |
190 | ||
191 | config_group_init_type_name(&tf->tf_group, name, | |
192 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
193 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", | |
194 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); | |
195 | ||
6708bb27 | 196 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db NB |
197 | " %s\n", tf->tf_group.cg_item.ci_name); |
198 | /* | |
199 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
200 | */ | |
201 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
202 | tf->tf_fabric = &tf->tf_group.cg_item; | |
6708bb27 | 203 | pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" |
c66ac9db NB |
204 | " for %s\n", name); |
205 | ||
206 | return &tf->tf_group; | |
207 | } | |
208 | ||
209 | /* | |
210 | * Called from struct target_core_group_ops->drop_item() | |
211 | */ | |
212 | static void target_core_deregister_fabric( | |
213 | struct config_group *group, | |
214 | struct config_item *item) | |
215 | { | |
216 | struct target_fabric_configfs *tf = container_of( | |
217 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
218 | struct config_group *tf_group; | |
219 | struct config_item *df_item; | |
220 | int i; | |
221 | ||
6708bb27 | 222 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
223 | " tf list\n", config_item_name(item)); |
224 | ||
6708bb27 | 225 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
c66ac9db NB |
226 | " %s\n", tf->tf_name); |
227 | atomic_dec(&tf->tf_access_cnt); | |
228 | ||
6708bb27 | 229 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" |
c66ac9db NB |
230 | " tf->tf_fabric for %s\n", tf->tf_name); |
231 | tf->tf_fabric = NULL; | |
232 | ||
6708bb27 | 233 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
234 | " %s\n", config_item_name(item)); |
235 | ||
236 | tf_group = &tf->tf_group; | |
237 | for (i = 0; tf_group->default_groups[i]; i++) { | |
238 | df_item = &tf_group->default_groups[i]->cg_item; | |
239 | tf_group->default_groups[i] = NULL; | |
240 | config_item_put(df_item); | |
241 | } | |
242 | config_item_put(item); | |
243 | } | |
244 | ||
245 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
246 | .make_group = &target_core_register_fabric, | |
247 | .drop_item = &target_core_deregister_fabric, | |
248 | }; | |
249 | ||
250 | /* | |
251 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
252 | */ | |
253 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
254 | &target_core_item_attr_version, | |
255 | NULL, | |
256 | }; | |
257 | ||
258 | /* | |
259 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
260 | */ | |
261 | static struct config_item_type target_core_fabrics_item = { | |
262 | .ct_item_ops = &target_core_fabric_item_ops, | |
263 | .ct_group_ops = &target_core_fabric_group_ops, | |
264 | .ct_attrs = target_core_fabric_item_attrs, | |
265 | .ct_owner = THIS_MODULE, | |
266 | }; | |
267 | ||
268 | static struct configfs_subsystem target_core_fabrics = { | |
269 | .su_group = { | |
270 | .cg_item = { | |
271 | .ci_namebuf = "target", | |
272 | .ci_type = &target_core_fabrics_item, | |
273 | }, | |
274 | }, | |
275 | }; | |
276 | ||
277 | static struct configfs_subsystem *target_core_subsystem[] = { | |
278 | &target_core_fabrics, | |
279 | NULL, | |
280 | }; | |
281 | ||
282 | /*############################################################################## | |
283 | // Start functions called by external Target Fabrics Modules | |
284 | //############################################################################*/ | |
285 | ||
286 | /* | |
287 | * First function called by fabric modules to: | |
288 | * | |
289 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
290 | * 2) Add struct target_fabric_configfs to g_tf_list | |
291 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
292 | * into target_fabric_configfs_register(). | |
293 | */ | |
294 | struct target_fabric_configfs *target_fabric_configfs_init( | |
295 | struct module *fabric_mod, | |
296 | const char *name) | |
297 | { | |
298 | struct target_fabric_configfs *tf; | |
299 | ||
c66ac9db | 300 | if (!(name)) { |
6708bb27 | 301 | pr_err("Unable to locate passed fabric name\n"); |
e3d6f909 | 302 | return ERR_PTR(-EINVAL); |
c66ac9db | 303 | } |
60d645a4 | 304 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 305 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
c66ac9db | 306 | "_NAME_SIZE\n", name); |
e3d6f909 | 307 | return ERR_PTR(-EINVAL); |
c66ac9db NB |
308 | } |
309 | ||
310 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 311 | if (!tf) |
e3d6f909 | 312 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
313 | |
314 | INIT_LIST_HEAD(&tf->tf_list); | |
315 | atomic_set(&tf->tf_access_cnt, 0); | |
316 | /* | |
317 | * Setup the default generic struct config_item_type's (cits) in | |
318 | * struct target_fabric_configfs->tf_cit_tmpl | |
319 | */ | |
320 | tf->tf_module = fabric_mod; | |
321 | target_fabric_setup_cits(tf); | |
322 | ||
323 | tf->tf_subsys = target_core_subsystem[0]; | |
324 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
325 | ||
326 | mutex_lock(&g_tf_lock); | |
327 | list_add_tail(&tf->tf_list, &g_tf_list); | |
328 | mutex_unlock(&g_tf_lock); | |
329 | ||
6708bb27 | 330 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" |
c66ac9db | 331 | ">>>>>>>>>>>>>>\n"); |
6708bb27 | 332 | pr_debug("Initialized struct target_fabric_configfs: %p for" |
c66ac9db NB |
333 | " %s\n", tf, tf->tf_name); |
334 | return tf; | |
335 | } | |
336 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
337 | ||
338 | /* | |
339 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
340 | */ | |
341 | void target_fabric_configfs_free( | |
342 | struct target_fabric_configfs *tf) | |
343 | { | |
344 | mutex_lock(&g_tf_lock); | |
345 | list_del(&tf->tf_list); | |
346 | mutex_unlock(&g_tf_lock); | |
347 | ||
348 | kfree(tf); | |
349 | } | |
350 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
351 | ||
352 | /* | |
353 | * Perform a sanity check of the passed tf->tf_ops before completing | |
354 | * TCM fabric module registration. | |
355 | */ | |
356 | static int target_fabric_tf_ops_check( | |
357 | struct target_fabric_configfs *tf) | |
358 | { | |
359 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
360 | ||
6708bb27 AG |
361 | if (!tfo->get_fabric_name) { |
362 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
363 | return -EINVAL; |
364 | } | |
6708bb27 AG |
365 | if (!tfo->get_fabric_proto_ident) { |
366 | pr_err("Missing tfo->get_fabric_proto_ident()\n"); | |
c66ac9db NB |
367 | return -EINVAL; |
368 | } | |
6708bb27 AG |
369 | if (!tfo->tpg_get_wwn) { |
370 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
371 | return -EINVAL; |
372 | } | |
6708bb27 AG |
373 | if (!tfo->tpg_get_tag) { |
374 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
375 | return -EINVAL; |
376 | } | |
6708bb27 AG |
377 | if (!tfo->tpg_get_default_depth) { |
378 | pr_err("Missing tfo->tpg_get_default_depth()\n"); | |
c66ac9db NB |
379 | return -EINVAL; |
380 | } | |
6708bb27 AG |
381 | if (!tfo->tpg_get_pr_transport_id) { |
382 | pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); | |
c66ac9db NB |
383 | return -EINVAL; |
384 | } | |
6708bb27 AG |
385 | if (!tfo->tpg_get_pr_transport_id_len) { |
386 | pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
c66ac9db NB |
387 | return -EINVAL; |
388 | } | |
6708bb27 AG |
389 | if (!tfo->tpg_check_demo_mode) { |
390 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
391 | return -EINVAL; |
392 | } | |
6708bb27 AG |
393 | if (!tfo->tpg_check_demo_mode_cache) { |
394 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
395 | return -EINVAL; |
396 | } | |
6708bb27 AG |
397 | if (!tfo->tpg_check_demo_mode_write_protect) { |
398 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
399 | return -EINVAL; |
400 | } | |
6708bb27 AG |
401 | if (!tfo->tpg_check_prod_mode_write_protect) { |
402 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
403 | return -EINVAL; |
404 | } | |
6708bb27 AG |
405 | if (!tfo->tpg_alloc_fabric_acl) { |
406 | pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); | |
c66ac9db NB |
407 | return -EINVAL; |
408 | } | |
6708bb27 AG |
409 | if (!tfo->tpg_release_fabric_acl) { |
410 | pr_err("Missing tfo->tpg_release_fabric_acl()\n"); | |
c66ac9db NB |
411 | return -EINVAL; |
412 | } | |
6708bb27 AG |
413 | if (!tfo->tpg_get_inst_index) { |
414 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
415 | return -EINVAL; |
416 | } | |
35462975 | 417 | if (!tfo->release_cmd) { |
6708bb27 | 418 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
419 | return -EINVAL; |
420 | } | |
6708bb27 AG |
421 | if (!tfo->shutdown_session) { |
422 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
423 | return -EINVAL; |
424 | } | |
6708bb27 AG |
425 | if (!tfo->close_session) { |
426 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
427 | return -EINVAL; |
428 | } | |
6708bb27 AG |
429 | if (!tfo->stop_session) { |
430 | pr_err("Missing tfo->stop_session()\n"); | |
c66ac9db NB |
431 | return -EINVAL; |
432 | } | |
6708bb27 AG |
433 | if (!tfo->fall_back_to_erl0) { |
434 | pr_err("Missing tfo->fall_back_to_erl0()\n"); | |
c66ac9db NB |
435 | return -EINVAL; |
436 | } | |
6708bb27 AG |
437 | if (!tfo->sess_logged_in) { |
438 | pr_err("Missing tfo->sess_logged_in()\n"); | |
c66ac9db NB |
439 | return -EINVAL; |
440 | } | |
6708bb27 AG |
441 | if (!tfo->sess_get_index) { |
442 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
443 | return -EINVAL; |
444 | } | |
6708bb27 AG |
445 | if (!tfo->write_pending) { |
446 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
447 | return -EINVAL; |
448 | } | |
6708bb27 AG |
449 | if (!tfo->write_pending_status) { |
450 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
451 | return -EINVAL; |
452 | } | |
6708bb27 AG |
453 | if (!tfo->set_default_node_attributes) { |
454 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
455 | return -EINVAL; |
456 | } | |
6708bb27 AG |
457 | if (!tfo->get_task_tag) { |
458 | pr_err("Missing tfo->get_task_tag()\n"); | |
c66ac9db NB |
459 | return -EINVAL; |
460 | } | |
6708bb27 AG |
461 | if (!tfo->get_cmd_state) { |
462 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
463 | return -EINVAL; |
464 | } | |
6708bb27 AG |
465 | if (!tfo->queue_data_in) { |
466 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
467 | return -EINVAL; |
468 | } | |
6708bb27 AG |
469 | if (!tfo->queue_status) { |
470 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
471 | return -EINVAL; |
472 | } | |
6708bb27 AG |
473 | if (!tfo->queue_tm_rsp) { |
474 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
475 | return -EINVAL; |
476 | } | |
6708bb27 AG |
477 | if (!tfo->set_fabric_sense_len) { |
478 | pr_err("Missing tfo->set_fabric_sense_len()\n"); | |
c66ac9db NB |
479 | return -EINVAL; |
480 | } | |
6708bb27 AG |
481 | if (!tfo->get_fabric_sense_len) { |
482 | pr_err("Missing tfo->get_fabric_sense_len()\n"); | |
c66ac9db NB |
483 | return -EINVAL; |
484 | } | |
6708bb27 AG |
485 | if (!tfo->is_state_remove) { |
486 | pr_err("Missing tfo->is_state_remove()\n"); | |
c66ac9db NB |
487 | return -EINVAL; |
488 | } | |
c66ac9db NB |
489 | /* |
490 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
491 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
492 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
493 | */ | |
6708bb27 AG |
494 | if (!tfo->fabric_make_wwn) { |
495 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
496 | return -EINVAL; |
497 | } | |
6708bb27 AG |
498 | if (!tfo->fabric_drop_wwn) { |
499 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
500 | return -EINVAL; |
501 | } | |
6708bb27 AG |
502 | if (!tfo->fabric_make_tpg) { |
503 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
504 | return -EINVAL; |
505 | } | |
6708bb27 AG |
506 | if (!tfo->fabric_drop_tpg) { |
507 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
508 | return -EINVAL; |
509 | } | |
510 | ||
511 | return 0; | |
512 | } | |
513 | ||
514 | /* | |
515 | * Called 2nd from fabric module with returned parameter of | |
516 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
517 | * | |
518 | * Upon a successful registration, the new fabric's struct config_item is | |
519 | * return. Also, a pointer to this struct is set in the passed | |
520 | * struct target_fabric_configfs. | |
521 | */ | |
522 | int target_fabric_configfs_register( | |
523 | struct target_fabric_configfs *tf) | |
524 | { | |
c66ac9db NB |
525 | int ret; |
526 | ||
6708bb27 AG |
527 | if (!tf) { |
528 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
529 | " pointer\n"); |
530 | return -EINVAL; | |
531 | } | |
6708bb27 AG |
532 | if (!tf->tf_subsys) { |
533 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
534 | " pointer\n"); |
535 | return -EINVAL; | |
536 | } | |
c66ac9db NB |
537 | ret = target_fabric_tf_ops_check(tf); |
538 | if (ret < 0) | |
539 | return ret; | |
540 | ||
6708bb27 | 541 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
542 | ">>>>>>>>>>\n"); |
543 | return 0; | |
544 | } | |
545 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
546 | ||
547 | void target_fabric_configfs_deregister( | |
548 | struct target_fabric_configfs *tf) | |
549 | { | |
c66ac9db NB |
550 | struct configfs_subsystem *su; |
551 | ||
6708bb27 AG |
552 | if (!tf) { |
553 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
554 | "configfs\n"); |
555 | return; | |
556 | } | |
557 | su = tf->tf_subsys; | |
6708bb27 AG |
558 | if (!su) { |
559 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
560 | " pointer\n"); |
561 | return; | |
562 | } | |
6708bb27 | 563 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
564 | ">>>>>>>>>>>>\n"); |
565 | mutex_lock(&g_tf_lock); | |
566 | if (atomic_read(&tf->tf_access_cnt)) { | |
567 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 568 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
569 | tf->tf_name); |
570 | BUG(); | |
571 | } | |
572 | list_del(&tf->tf_list); | |
573 | mutex_unlock(&g_tf_lock); | |
574 | ||
6708bb27 | 575 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
576 | " %s\n", tf->tf_name); |
577 | tf->tf_module = NULL; | |
578 | tf->tf_subsys = NULL; | |
579 | kfree(tf); | |
580 | ||
6708bb27 | 581 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 582 | ">>>>>\n"); |
c66ac9db NB |
583 | } |
584 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
585 | ||
586 | /*############################################################################## | |
587 | // Stop functions called by external Target Fabrics Modules | |
588 | //############################################################################*/ | |
589 | ||
590 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
591 | ||
592 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
593 | static ssize_t target_core_dev_show_attr_##_name( \ | |
594 | struct se_dev_attrib *da, \ | |
595 | char *page) \ | |
596 | { \ | |
597 | struct se_device *dev; \ | |
598 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
599 | ssize_t rb; \ | |
600 | \ | |
601 | spin_lock(&se_dev->se_dev_lock); \ | |
602 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 603 | if (!dev) { \ |
c66ac9db NB |
604 | spin_unlock(&se_dev->se_dev_lock); \ |
605 | return -ENODEV; \ | |
606 | } \ | |
e3d6f909 AG |
607 | rb = snprintf(page, PAGE_SIZE, "%u\n", \ |
608 | (u32)dev->se_sub_dev->se_dev_attrib._name); \ | |
c66ac9db NB |
609 | spin_unlock(&se_dev->se_dev_lock); \ |
610 | \ | |
611 | return rb; \ | |
612 | } | |
613 | ||
614 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
615 | static ssize_t target_core_dev_store_attr_##_name( \ | |
616 | struct se_dev_attrib *da, \ | |
617 | const char *page, \ | |
618 | size_t count) \ | |
619 | { \ | |
620 | struct se_device *dev; \ | |
621 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
622 | unsigned long val; \ | |
623 | int ret; \ | |
624 | \ | |
625 | spin_lock(&se_dev->se_dev_lock); \ | |
626 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 627 | if (!dev) { \ |
c66ac9db NB |
628 | spin_unlock(&se_dev->se_dev_lock); \ |
629 | return -ENODEV; \ | |
630 | } \ | |
631 | ret = strict_strtoul(page, 0, &val); \ | |
632 | if (ret < 0) { \ | |
633 | spin_unlock(&se_dev->se_dev_lock); \ | |
6708bb27 | 634 | pr_err("strict_strtoul() failed with" \ |
c66ac9db NB |
635 | " ret: %d\n", ret); \ |
636 | return -EINVAL; \ | |
637 | } \ | |
638 | ret = se_dev_set_##_name(dev, (u32)val); \ | |
639 | spin_unlock(&se_dev->se_dev_lock); \ | |
640 | \ | |
641 | return (!ret) ? count : -EINVAL; \ | |
642 | } | |
643 | ||
644 | #define DEF_DEV_ATTRIB(_name) \ | |
645 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
646 | DEF_DEV_ATTRIB_STORE(_name); | |
647 | ||
648 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
649 | DEF_DEV_ATTRIB_SHOW(_name); | |
650 | ||
651 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
652 | #define SE_DEV_ATTR(_name, _mode) \ | |
653 | static struct target_core_dev_attrib_attribute \ | |
654 | target_core_dev_attrib_##_name = \ | |
655 | __CONFIGFS_EATTR(_name, _mode, \ | |
656 | target_core_dev_show_attr_##_name, \ | |
657 | target_core_dev_store_attr_##_name); | |
658 | ||
659 | #define SE_DEV_ATTR_RO(_name); \ | |
660 | static struct target_core_dev_attrib_attribute \ | |
661 | target_core_dev_attrib_##_name = \ | |
662 | __CONFIGFS_EATTR_RO(_name, \ | |
663 | target_core_dev_show_attr_##_name); | |
664 | ||
665 | DEF_DEV_ATTRIB(emulate_dpo); | |
666 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
667 | ||
668 | DEF_DEV_ATTRIB(emulate_fua_write); | |
669 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
670 | ||
671 | DEF_DEV_ATTRIB(emulate_fua_read); | |
672 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
673 | ||
674 | DEF_DEV_ATTRIB(emulate_write_cache); | |
675 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
676 | ||
677 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
678 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
679 | ||
680 | DEF_DEV_ATTRIB(emulate_tas); | |
681 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
682 | ||
683 | DEF_DEV_ATTRIB(emulate_tpu); | |
684 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
685 | ||
686 | DEF_DEV_ATTRIB(emulate_tpws); | |
687 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
688 | ||
689 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
690 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
691 | ||
e22a7f07 RD |
692 | DEF_DEV_ATTRIB(is_nonrot); |
693 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); | |
694 | ||
5de619a3 NB |
695 | DEF_DEV_ATTRIB(emulate_rest_reord); |
696 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); | |
697 | ||
c66ac9db NB |
698 | DEF_DEV_ATTRIB_RO(hw_block_size); |
699 | SE_DEV_ATTR_RO(hw_block_size); | |
700 | ||
701 | DEF_DEV_ATTRIB(block_size); | |
702 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
703 | ||
704 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
705 | SE_DEV_ATTR_RO(hw_max_sectors); | |
706 | ||
707 | DEF_DEV_ATTRIB(max_sectors); | |
708 | SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); | |
709 | ||
710 | DEF_DEV_ATTRIB(optimal_sectors); | |
711 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
712 | ||
713 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
714 | SE_DEV_ATTR_RO(hw_queue_depth); | |
715 | ||
716 | DEF_DEV_ATTRIB(queue_depth); | |
717 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
718 | ||
c66ac9db NB |
719 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
720 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
721 | ||
722 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
723 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
724 | ||
725 | DEF_DEV_ATTRIB(unmap_granularity); | |
726 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
727 | ||
728 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
729 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
730 | ||
731 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
732 | ||
733 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
734 | &target_core_dev_attrib_emulate_dpo.attr, | |
735 | &target_core_dev_attrib_emulate_fua_write.attr, | |
736 | &target_core_dev_attrib_emulate_fua_read.attr, | |
737 | &target_core_dev_attrib_emulate_write_cache.attr, | |
738 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
739 | &target_core_dev_attrib_emulate_tas.attr, | |
740 | &target_core_dev_attrib_emulate_tpu.attr, | |
741 | &target_core_dev_attrib_emulate_tpws.attr, | |
742 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
e22a7f07 | 743 | &target_core_dev_attrib_is_nonrot.attr, |
5de619a3 | 744 | &target_core_dev_attrib_emulate_rest_reord.attr, |
c66ac9db NB |
745 | &target_core_dev_attrib_hw_block_size.attr, |
746 | &target_core_dev_attrib_block_size.attr, | |
747 | &target_core_dev_attrib_hw_max_sectors.attr, | |
748 | &target_core_dev_attrib_max_sectors.attr, | |
749 | &target_core_dev_attrib_optimal_sectors.attr, | |
750 | &target_core_dev_attrib_hw_queue_depth.attr, | |
751 | &target_core_dev_attrib_queue_depth.attr, | |
c66ac9db NB |
752 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
753 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
754 | &target_core_dev_attrib_unmap_granularity.attr, | |
755 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
756 | NULL, | |
757 | }; | |
758 | ||
759 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
760 | .show_attribute = target_core_dev_attrib_attr_show, | |
761 | .store_attribute = target_core_dev_attrib_attr_store, | |
762 | }; | |
763 | ||
764 | static struct config_item_type target_core_dev_attrib_cit = { | |
765 | .ct_item_ops = &target_core_dev_attrib_ops, | |
766 | .ct_attrs = target_core_dev_attrib_attrs, | |
767 | .ct_owner = THIS_MODULE, | |
768 | }; | |
769 | ||
770 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
771 | ||
772 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
773 | ||
774 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
775 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
776 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
777 | __CONFIGFS_EATTR(_name, _mode, \ | |
778 | target_core_dev_wwn_show_attr_##_name, \ | |
779 | target_core_dev_wwn_store_attr_##_name); | |
780 | ||
781 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
782 | do { \ | |
783 | static struct target_core_dev_wwn_attribute \ | |
784 | target_core_dev_wwn_##_name = \ | |
785 | __CONFIGFS_EATTR_RO(_name, \ | |
786 | target_core_dev_wwn_show_attr_##_name); \ | |
787 | } while (0); | |
788 | ||
789 | /* | |
790 | * VPD page 0x80 Unit serial | |
791 | */ | |
792 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
793 | struct t10_wwn *t10_wwn, | |
794 | char *page) | |
795 | { | |
796 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
797 | struct se_device *dev; | |
798 | ||
799 | dev = se_dev->se_dev_ptr; | |
6708bb27 | 800 | if (!dev) |
c66ac9db NB |
801 | return -ENODEV; |
802 | ||
803 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", | |
804 | &t10_wwn->unit_serial[0]); | |
805 | } | |
806 | ||
807 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
808 | struct t10_wwn *t10_wwn, | |
809 | const char *page, | |
810 | size_t count) | |
811 | { | |
812 | struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; | |
813 | struct se_device *dev; | |
814 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; | |
815 | ||
816 | /* | |
817 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
818 | * from the struct scsi_device level firmware, do not allow | |
819 | * VPD Unit Serial to be emulated. | |
820 | * | |
821 | * Note this struct scsi_device could also be emulating VPD | |
822 | * information from its drivers/scsi LLD. But for now we assume | |
823 | * it is doing 'the right thing' wrt a world wide unique | |
824 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
825 | */ | |
826 | if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { | |
6708bb27 | 827 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
828 | " Unit Serial, ignoring request\n"); |
829 | return -EOPNOTSUPP; | |
830 | } | |
831 | ||
60d645a4 | 832 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 833 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
834 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
835 | return -EOVERFLOW; | |
836 | } | |
837 | /* | |
838 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
839 | * do exist, fail here as changing this information on the fly | |
840 | * (underneath the initiator side OS dependent multipath code) | |
841 | * could cause negative effects. | |
842 | */ | |
843 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 844 | if (dev) { |
c66ac9db | 845 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
6708bb27 | 846 | pr_err("Unable to set VPD Unit Serial while" |
c66ac9db NB |
847 | " active %d $FABRIC_MOD exports exist\n", |
848 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
849 | return -EINVAL; | |
850 | } | |
851 | } | |
852 | /* | |
853 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
854 | * | |
855 | * Also, strip any newline added from the userspace | |
856 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
857 | */ | |
858 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
859 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
860 | snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, | |
861 | "%s", strstrip(buf)); | |
862 | su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; | |
863 | ||
6708bb27 | 864 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
c66ac9db NB |
865 | " %s\n", su_dev->t10_wwn.unit_serial); |
866 | ||
867 | return count; | |
868 | } | |
869 | ||
870 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
871 | ||
872 | /* | |
873 | * VPD page 0x83 Protocol Identifier | |
874 | */ | |
875 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
876 | struct t10_wwn *t10_wwn, | |
877 | char *page) | |
878 | { | |
879 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
880 | struct se_device *dev; | |
881 | struct t10_vpd *vpd; | |
882 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
883 | ssize_t len = 0; | |
884 | ||
885 | dev = se_dev->se_dev_ptr; | |
6708bb27 | 886 | if (!dev) |
c66ac9db NB |
887 | return -ENODEV; |
888 | ||
889 | memset(buf, 0, VPD_TMP_BUF_SIZE); | |
890 | ||
891 | spin_lock(&t10_wwn->t10_vpd_lock); | |
892 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 893 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
894 | continue; |
895 | ||
896 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
897 | ||
6708bb27 | 898 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
899 | break; |
900 | ||
901 | len += sprintf(page+len, "%s", buf); | |
902 | } | |
903 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
904 | ||
905 | return len; | |
906 | } | |
907 | ||
908 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
909 | struct t10_wwn *t10_wwn, | |
910 | const char *page, | |
911 | size_t count) | |
912 | { | |
913 | return -ENOSYS; | |
914 | } | |
915 | ||
916 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
917 | ||
918 | /* | |
919 | * Generic wrapper for dumping VPD identifiers by association. | |
920 | */ | |
921 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
922 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
923 | struct t10_wwn *t10_wwn, \ | |
924 | char *page) \ | |
925 | { \ | |
926 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ | |
927 | struct se_device *dev; \ | |
928 | struct t10_vpd *vpd; \ | |
929 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
930 | ssize_t len = 0; \ | |
931 | \ | |
932 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 933 | if (!dev) \ |
c66ac9db NB |
934 | return -ENODEV; \ |
935 | \ | |
936 | spin_lock(&t10_wwn->t10_vpd_lock); \ | |
937 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
938 | if (vpd->association != _assoc) \ | |
939 | continue; \ | |
940 | \ | |
941 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
942 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 943 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
944 | break; \ |
945 | len += sprintf(page+len, "%s", buf); \ | |
946 | \ | |
947 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
948 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 949 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
950 | break; \ |
951 | len += sprintf(page+len, "%s", buf); \ | |
952 | \ | |
953 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
954 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 955 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
956 | break; \ |
957 | len += sprintf(page+len, "%s", buf); \ | |
958 | } \ | |
959 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
960 | \ | |
961 | return len; \ | |
962 | } | |
963 | ||
964 | /* | |
163cd5fa | 965 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
966 | */ |
967 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
968 | ||
969 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
970 | struct t10_wwn *t10_wwn, | |
971 | const char *page, | |
972 | size_t count) | |
973 | { | |
974 | return -ENOSYS; | |
975 | } | |
976 | ||
977 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
978 | ||
979 | /* | |
980 | * VPD page 0x83 Association: Target Port | |
981 | */ | |
982 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
983 | ||
984 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
985 | struct t10_wwn *t10_wwn, | |
986 | const char *page, | |
987 | size_t count) | |
988 | { | |
989 | return -ENOSYS; | |
990 | } | |
991 | ||
992 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
993 | ||
994 | /* | |
995 | * VPD page 0x83 Association: SCSI Target Device | |
996 | */ | |
997 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
998 | ||
999 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
1000 | struct t10_wwn *t10_wwn, | |
1001 | const char *page, | |
1002 | size_t count) | |
1003 | { | |
1004 | return -ENOSYS; | |
1005 | } | |
1006 | ||
1007 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
1008 | ||
1009 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
1010 | ||
1011 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
1012 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
1013 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
1014 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
1015 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
1016 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1017 | NULL, | |
1018 | }; | |
1019 | ||
1020 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1021 | .show_attribute = target_core_dev_wwn_attr_show, | |
1022 | .store_attribute = target_core_dev_wwn_attr_store, | |
1023 | }; | |
1024 | ||
1025 | static struct config_item_type target_core_dev_wwn_cit = { | |
1026 | .ct_item_ops = &target_core_dev_wwn_ops, | |
1027 | .ct_attrs = target_core_dev_wwn_attrs, | |
1028 | .ct_owner = THIS_MODULE, | |
1029 | }; | |
1030 | ||
1031 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
1032 | ||
1033 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
1034 | ||
1035 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); | |
1036 | #define SE_DEV_PR_ATTR(_name, _mode) \ | |
1037 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1038 | __CONFIGFS_EATTR(_name, _mode, \ | |
1039 | target_core_dev_pr_show_attr_##_name, \ | |
1040 | target_core_dev_pr_store_attr_##_name); | |
1041 | ||
1042 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1043 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1044 | __CONFIGFS_EATTR_RO(_name, \ | |
1045 | target_core_dev_pr_show_attr_##_name); | |
1046 | ||
1047 | /* | |
1048 | * res_holder | |
1049 | */ | |
1050 | static ssize_t target_core_dev_pr_show_spc3_res( | |
1051 | struct se_device *dev, | |
1052 | char *page, | |
1053 | ssize_t *len) | |
1054 | { | |
1055 | struct se_node_acl *se_nacl; | |
1056 | struct t10_pr_registration *pr_reg; | |
1057 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1058 | int prf_isid; | |
1059 | ||
1060 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1061 | ||
1062 | spin_lock(&dev->dev_reservation_lock); | |
1063 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1064 | if (!pr_reg) { |
c66ac9db NB |
1065 | *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); |
1066 | spin_unlock(&dev->dev_reservation_lock); | |
1067 | return *len; | |
1068 | } | |
1069 | se_nacl = pr_reg->pr_reg_nacl; | |
1070 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1071 | PR_REG_ISID_ID_LEN); | |
1072 | ||
1073 | *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", | |
e3d6f909 | 1074 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1075 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); |
1076 | spin_unlock(&dev->dev_reservation_lock); | |
1077 | ||
1078 | return *len; | |
1079 | } | |
1080 | ||
1081 | static ssize_t target_core_dev_pr_show_spc2_res( | |
1082 | struct se_device *dev, | |
1083 | char *page, | |
1084 | ssize_t *len) | |
1085 | { | |
1086 | struct se_node_acl *se_nacl; | |
1087 | ||
1088 | spin_lock(&dev->dev_reservation_lock); | |
1089 | se_nacl = dev->dev_reserved_node_acl; | |
6708bb27 | 1090 | if (!se_nacl) { |
c66ac9db NB |
1091 | *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); |
1092 | spin_unlock(&dev->dev_reservation_lock); | |
1093 | return *len; | |
1094 | } | |
1095 | *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", | |
e3d6f909 | 1096 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1097 | se_nacl->initiatorname); |
1098 | spin_unlock(&dev->dev_reservation_lock); | |
1099 | ||
1100 | return *len; | |
1101 | } | |
1102 | ||
1103 | static ssize_t target_core_dev_pr_show_attr_res_holder( | |
1104 | struct se_subsystem_dev *su_dev, | |
1105 | char *page) | |
1106 | { | |
1107 | ssize_t len = 0; | |
1108 | ||
6708bb27 | 1109 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1110 | return -ENODEV; |
1111 | ||
e3d6f909 | 1112 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1113 | case SPC3_PERSISTENT_RESERVATIONS: |
1114 | target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, | |
1115 | page, &len); | |
1116 | break; | |
1117 | case SPC2_RESERVATIONS: | |
1118 | target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, | |
1119 | page, &len); | |
1120 | break; | |
1121 | case SPC_PASSTHROUGH: | |
1122 | len += sprintf(page+len, "Passthrough\n"); | |
1123 | break; | |
1124 | default: | |
1125 | len += sprintf(page+len, "Unknown\n"); | |
1126 | break; | |
1127 | } | |
1128 | ||
1129 | return len; | |
1130 | } | |
1131 | ||
1132 | SE_DEV_PR_ATTR_RO(res_holder); | |
1133 | ||
1134 | /* | |
1135 | * res_pr_all_tgt_pts | |
1136 | */ | |
1137 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( | |
1138 | struct se_subsystem_dev *su_dev, | |
1139 | char *page) | |
1140 | { | |
1141 | struct se_device *dev; | |
1142 | struct t10_pr_registration *pr_reg; | |
1143 | ssize_t len = 0; | |
1144 | ||
1145 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1146 | if (!dev) |
c66ac9db NB |
1147 | return -ENODEV; |
1148 | ||
e3d6f909 | 1149 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1150 | return len; |
1151 | ||
1152 | spin_lock(&dev->dev_reservation_lock); | |
1153 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1154 | if (!pr_reg) { |
c66ac9db NB |
1155 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1156 | spin_unlock(&dev->dev_reservation_lock); | |
1157 | return len; | |
1158 | } | |
1159 | /* | |
1160 | * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 | |
1161 | * Basic PERSISTENT RESERVER OUT parameter list, page 290 | |
1162 | */ | |
1163 | if (pr_reg->pr_reg_all_tg_pt) | |
1164 | len = sprintf(page, "SPC-3 Reservation: All Target" | |
1165 | " Ports registration\n"); | |
1166 | else | |
1167 | len = sprintf(page, "SPC-3 Reservation: Single" | |
1168 | " Target Port registration\n"); | |
1169 | spin_unlock(&dev->dev_reservation_lock); | |
1170 | ||
1171 | return len; | |
1172 | } | |
1173 | ||
1174 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1175 | ||
1176 | /* | |
1177 | * res_pr_generation | |
1178 | */ | |
1179 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( | |
1180 | struct se_subsystem_dev *su_dev, | |
1181 | char *page) | |
1182 | { | |
6708bb27 | 1183 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1184 | return -ENODEV; |
1185 | ||
e3d6f909 | 1186 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1187 | return 0; |
1188 | ||
e3d6f909 | 1189 | return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation); |
c66ac9db NB |
1190 | } |
1191 | ||
1192 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1193 | ||
1194 | /* | |
1195 | * res_pr_holder_tg_port | |
1196 | */ | |
1197 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
1198 | struct se_subsystem_dev *su_dev, | |
1199 | char *page) | |
1200 | { | |
1201 | struct se_device *dev; | |
1202 | struct se_node_acl *se_nacl; | |
1203 | struct se_lun *lun; | |
1204 | struct se_portal_group *se_tpg; | |
1205 | struct t10_pr_registration *pr_reg; | |
1206 | struct target_core_fabric_ops *tfo; | |
1207 | ssize_t len = 0; | |
1208 | ||
1209 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1210 | if (!dev) |
c66ac9db NB |
1211 | return -ENODEV; |
1212 | ||
e3d6f909 | 1213 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1214 | return len; |
1215 | ||
1216 | spin_lock(&dev->dev_reservation_lock); | |
1217 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1218 | if (!pr_reg) { |
c66ac9db NB |
1219 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1220 | spin_unlock(&dev->dev_reservation_lock); | |
1221 | return len; | |
1222 | } | |
1223 | se_nacl = pr_reg->pr_reg_nacl; | |
1224 | se_tpg = se_nacl->se_tpg; | |
1225 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1226 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1227 | |
1228 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1229 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1230 | tfo->tpg_get_wwn(se_tpg)); | |
1231 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
1232 | " Identifer Tag: %hu %s Portal Group Tag: %hu" | |
1233 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, | |
1234 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1235 | tfo->get_fabric_name(), lun->unpacked_lun); | |
1236 | spin_unlock(&dev->dev_reservation_lock); | |
1237 | ||
1238 | return len; | |
1239 | } | |
1240 | ||
1241 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1242 | ||
1243 | /* | |
1244 | * res_pr_registered_i_pts | |
1245 | */ | |
1246 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( | |
1247 | struct se_subsystem_dev *su_dev, | |
1248 | char *page) | |
1249 | { | |
1250 | struct target_core_fabric_ops *tfo; | |
1251 | struct t10_pr_registration *pr_reg; | |
1252 | unsigned char buf[384]; | |
1253 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1254 | ssize_t len = 0; | |
1255 | int reg_count = 0, prf_isid; | |
1256 | ||
6708bb27 | 1257 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1258 | return -ENODEV; |
1259 | ||
e3d6f909 | 1260 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1261 | return len; |
1262 | ||
1263 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); | |
1264 | ||
e3d6f909 AG |
1265 | spin_lock(&su_dev->t10_pr.registration_lock); |
1266 | list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, | |
c66ac9db NB |
1267 | pr_reg_list) { |
1268 | ||
1269 | memset(buf, 0, 384); | |
1270 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1271 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1272 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1273 | PR_REG_ISID_ID_LEN); | |
1274 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1275 | tfo->get_fabric_name(), | |
1276 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1277 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1278 | pr_reg->pr_res_generation); | |
1279 | ||
6708bb27 | 1280 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1281 | break; |
1282 | ||
1283 | len += sprintf(page+len, "%s", buf); | |
1284 | reg_count++; | |
1285 | } | |
e3d6f909 | 1286 | spin_unlock(&su_dev->t10_pr.registration_lock); |
c66ac9db | 1287 | |
6708bb27 | 1288 | if (!reg_count) |
c66ac9db NB |
1289 | len += sprintf(page+len, "None\n"); |
1290 | ||
1291 | return len; | |
1292 | } | |
1293 | ||
1294 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1295 | ||
1296 | /* | |
1297 | * res_pr_type | |
1298 | */ | |
1299 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( | |
1300 | struct se_subsystem_dev *su_dev, | |
1301 | char *page) | |
1302 | { | |
1303 | struct se_device *dev; | |
1304 | struct t10_pr_registration *pr_reg; | |
1305 | ssize_t len = 0; | |
1306 | ||
1307 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1308 | if (!dev) |
c66ac9db NB |
1309 | return -ENODEV; |
1310 | ||
e3d6f909 | 1311 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1312 | return len; |
1313 | ||
1314 | spin_lock(&dev->dev_reservation_lock); | |
1315 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1316 | if (!pr_reg) { |
c66ac9db NB |
1317 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1318 | spin_unlock(&dev->dev_reservation_lock); | |
1319 | return len; | |
1320 | } | |
1321 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1322 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1323 | spin_unlock(&dev->dev_reservation_lock); | |
1324 | ||
1325 | return len; | |
1326 | } | |
1327 | ||
1328 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1329 | ||
1330 | /* | |
1331 | * res_type | |
1332 | */ | |
1333 | static ssize_t target_core_dev_pr_show_attr_res_type( | |
1334 | struct se_subsystem_dev *su_dev, | |
1335 | char *page) | |
1336 | { | |
1337 | ssize_t len = 0; | |
1338 | ||
6708bb27 | 1339 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1340 | return -ENODEV; |
1341 | ||
e3d6f909 | 1342 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1343 | case SPC3_PERSISTENT_RESERVATIONS: |
1344 | len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
1345 | break; | |
1346 | case SPC2_RESERVATIONS: | |
1347 | len = sprintf(page, "SPC2_RESERVATIONS\n"); | |
1348 | break; | |
1349 | case SPC_PASSTHROUGH: | |
1350 | len = sprintf(page, "SPC_PASSTHROUGH\n"); | |
1351 | break; | |
1352 | default: | |
1353 | len = sprintf(page, "UNKNOWN\n"); | |
1354 | break; | |
1355 | } | |
1356 | ||
1357 | return len; | |
1358 | } | |
1359 | ||
1360 | SE_DEV_PR_ATTR_RO(res_type); | |
1361 | ||
1362 | /* | |
1363 | * res_aptpl_active | |
1364 | */ | |
1365 | ||
1366 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( | |
1367 | struct se_subsystem_dev *su_dev, | |
1368 | char *page) | |
1369 | { | |
6708bb27 | 1370 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1371 | return -ENODEV; |
1372 | ||
e3d6f909 | 1373 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1374 | return 0; |
1375 | ||
1376 | return sprintf(page, "APTPL Bit Status: %s\n", | |
e3d6f909 | 1377 | (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1378 | } |
1379 | ||
1380 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1381 | ||
1382 | /* | |
1383 | * res_aptpl_metadata | |
1384 | */ | |
1385 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
1386 | struct se_subsystem_dev *su_dev, | |
1387 | char *page) | |
1388 | { | |
6708bb27 | 1389 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1390 | return -ENODEV; |
1391 | ||
e3d6f909 | 1392 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1393 | return 0; |
1394 | ||
1395 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1396 | } | |
1397 | ||
1398 | enum { | |
1399 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1400 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1401 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1402 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1403 | }; | |
1404 | ||
1405 | static match_table_t tokens = { | |
1406 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1407 | {Opt_initiator_node, "initiator_node=%s"}, | |
1408 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1409 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1410 | {Opt_res_holder, "res_holder=%d"}, | |
1411 | {Opt_res_type, "res_type=%d"}, | |
1412 | {Opt_res_scope, "res_scope=%d"}, | |
1413 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1414 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1415 | {Opt_target_fabric, "target_fabric=%s"}, | |
1416 | {Opt_target_node, "target_node=%s"}, | |
1417 | {Opt_tpgt, "tpgt=%d"}, | |
1418 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1419 | {Opt_target_lun, "target_lun=%d"}, | |
1420 | {Opt_err, NULL} | |
1421 | }; | |
1422 | ||
1423 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
1424 | struct se_subsystem_dev *su_dev, | |
1425 | const char *page, | |
1426 | size_t count) | |
1427 | { | |
1428 | struct se_device *dev; | |
6d180253 JJ |
1429 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1430 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1431 | char *orig, *ptr, *arg_p, *opts; |
1432 | substring_t args[MAX_OPT_ARGS]; | |
1433 | unsigned long long tmp_ll; | |
1434 | u64 sa_res_key = 0; | |
1435 | u32 mapped_lun = 0, target_lun = 0; | |
1436 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1437 | u16 port_rpti = 0, tpgt = 0; | |
1438 | u8 type = 0, scope; | |
1439 | ||
1440 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1441 | if (!dev) |
c66ac9db NB |
1442 | return -ENODEV; |
1443 | ||
e3d6f909 | 1444 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1445 | return 0; |
1446 | ||
1447 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1448 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1449 | " active fabric exports exist\n"); |
1450 | return -EINVAL; | |
1451 | } | |
1452 | ||
1453 | opts = kstrdup(page, GFP_KERNEL); | |
1454 | if (!opts) | |
1455 | return -ENOMEM; | |
1456 | ||
1457 | orig = opts; | |
1458 | while ((ptr = strsep(&opts, ",")) != NULL) { | |
1459 | if (!*ptr) | |
1460 | continue; | |
1461 | ||
1462 | token = match_token(ptr, tokens, args); | |
1463 | switch (token) { | |
1464 | case Opt_initiator_fabric: | |
1465 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1466 | if (!i_fabric) { |
1467 | ret = -ENOMEM; | |
1468 | goto out; | |
1469 | } | |
c66ac9db NB |
1470 | break; |
1471 | case Opt_initiator_node: | |
1472 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1473 | if (!i_port) { |
1474 | ret = -ENOMEM; | |
1475 | goto out; | |
1476 | } | |
60d645a4 | 1477 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1478 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1479 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1480 | PR_APTPL_MAX_IPORT_LEN); | |
1481 | ret = -EINVAL; | |
1482 | break; | |
1483 | } | |
1484 | break; | |
1485 | case Opt_initiator_sid: | |
1486 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1487 | if (!isid) { |
1488 | ret = -ENOMEM; | |
1489 | goto out; | |
1490 | } | |
60d645a4 | 1491 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1492 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1493 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1494 | PR_REG_ISID_LEN); | |
1495 | ret = -EINVAL; | |
1496 | break; | |
1497 | } | |
1498 | break; | |
1499 | case Opt_sa_res_key: | |
1500 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1501 | if (!arg_p) { |
1502 | ret = -ENOMEM; | |
1503 | goto out; | |
1504 | } | |
c66ac9db NB |
1505 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
1506 | if (ret < 0) { | |
6708bb27 | 1507 | pr_err("strict_strtoull() failed for" |
c66ac9db NB |
1508 | " sa_res_key=\n"); |
1509 | goto out; | |
1510 | } | |
1511 | sa_res_key = (u64)tmp_ll; | |
1512 | break; | |
1513 | /* | |
1514 | * PR APTPL Metadata for Reservation | |
1515 | */ | |
1516 | case Opt_res_holder: | |
1517 | match_int(args, &arg); | |
1518 | res_holder = arg; | |
1519 | break; | |
1520 | case Opt_res_type: | |
1521 | match_int(args, &arg); | |
1522 | type = (u8)arg; | |
1523 | break; | |
1524 | case Opt_res_scope: | |
1525 | match_int(args, &arg); | |
1526 | scope = (u8)arg; | |
1527 | break; | |
1528 | case Opt_res_all_tg_pt: | |
1529 | match_int(args, &arg); | |
1530 | all_tg_pt = (int)arg; | |
1531 | break; | |
1532 | case Opt_mapped_lun: | |
1533 | match_int(args, &arg); | |
1534 | mapped_lun = (u32)arg; | |
1535 | break; | |
1536 | /* | |
1537 | * PR APTPL Metadata for Target Port | |
1538 | */ | |
1539 | case Opt_target_fabric: | |
1540 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1541 | if (!t_fabric) { |
1542 | ret = -ENOMEM; | |
1543 | goto out; | |
1544 | } | |
c66ac9db NB |
1545 | break; |
1546 | case Opt_target_node: | |
1547 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1548 | if (!t_port) { |
1549 | ret = -ENOMEM; | |
1550 | goto out; | |
1551 | } | |
60d645a4 | 1552 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1553 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1554 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1555 | PR_APTPL_MAX_TPORT_LEN); | |
1556 | ret = -EINVAL; | |
1557 | break; | |
1558 | } | |
1559 | break; | |
1560 | case Opt_tpgt: | |
1561 | match_int(args, &arg); | |
1562 | tpgt = (u16)arg; | |
1563 | break; | |
1564 | case Opt_port_rtpi: | |
1565 | match_int(args, &arg); | |
1566 | port_rpti = (u16)arg; | |
1567 | break; | |
1568 | case Opt_target_lun: | |
1569 | match_int(args, &arg); | |
1570 | target_lun = (u32)arg; | |
1571 | break; | |
1572 | default: | |
1573 | break; | |
1574 | } | |
1575 | } | |
1576 | ||
6708bb27 AG |
1577 | if (!i_port || !t_port || !sa_res_key) { |
1578 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1579 | ret = -EINVAL; |
1580 | goto out; | |
1581 | } | |
1582 | ||
1583 | if (res_holder && !(type)) { | |
6708bb27 | 1584 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1585 | " holder\n", type); |
1586 | ret = -EINVAL; | |
1587 | goto out; | |
1588 | } | |
1589 | ||
e3d6f909 | 1590 | ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key, |
c66ac9db NB |
1591 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1592 | res_holder, all_tg_pt, type); | |
1593 | out: | |
6d180253 JJ |
1594 | kfree(i_fabric); |
1595 | kfree(i_port); | |
1596 | kfree(isid); | |
1597 | kfree(t_fabric); | |
1598 | kfree(t_port); | |
c66ac9db NB |
1599 | kfree(orig); |
1600 | return (ret == 0) ? count : ret; | |
1601 | } | |
1602 | ||
1603 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1604 | ||
1605 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); | |
1606 | ||
1607 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1608 | &target_core_dev_pr_res_holder.attr, | |
1609 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1610 | &target_core_dev_pr_res_pr_generation.attr, | |
1611 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1612 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1613 | &target_core_dev_pr_res_pr_type.attr, | |
1614 | &target_core_dev_pr_res_type.attr, | |
1615 | &target_core_dev_pr_res_aptpl_active.attr, | |
1616 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1617 | NULL, | |
1618 | }; | |
1619 | ||
1620 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1621 | .show_attribute = target_core_dev_pr_attr_show, | |
1622 | .store_attribute = target_core_dev_pr_attr_store, | |
1623 | }; | |
1624 | ||
1625 | static struct config_item_type target_core_dev_pr_cit = { | |
1626 | .ct_item_ops = &target_core_dev_pr_ops, | |
1627 | .ct_attrs = target_core_dev_pr_attrs, | |
1628 | .ct_owner = THIS_MODULE, | |
1629 | }; | |
1630 | ||
1631 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1632 | ||
1633 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1634 | ||
1635 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1636 | { | |
1637 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1638 | struct se_hba *hba = se_dev->se_dev_hba; | |
1639 | struct se_subsystem_api *t = hba->transport; | |
1640 | int bl = 0; | |
1641 | ssize_t read_bytes = 0; | |
1642 | ||
6708bb27 | 1643 | if (!se_dev->se_dev_ptr) |
c66ac9db NB |
1644 | return -ENODEV; |
1645 | ||
1646 | transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); | |
1647 | read_bytes += bl; | |
1648 | read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); | |
1649 | return read_bytes; | |
1650 | } | |
1651 | ||
1652 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1653 | .attr = { .ca_owner = THIS_MODULE, | |
1654 | .ca_name = "info", | |
1655 | .ca_mode = S_IRUGO }, | |
1656 | .show = target_core_show_dev_info, | |
1657 | .store = NULL, | |
1658 | }; | |
1659 | ||
1660 | static ssize_t target_core_store_dev_control( | |
1661 | void *p, | |
1662 | const char *page, | |
1663 | size_t count) | |
1664 | { | |
1665 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1666 | struct se_hba *hba = se_dev->se_dev_hba; | |
1667 | struct se_subsystem_api *t = hba->transport; | |
1668 | ||
6708bb27 AG |
1669 | if (!se_dev->se_dev_su_ptr) { |
1670 | pr_err("Unable to locate struct se_subsystem_dev>se" | |
c66ac9db NB |
1671 | "_dev_su_ptr\n"); |
1672 | return -EINVAL; | |
1673 | } | |
1674 | ||
1675 | return t->set_configfs_dev_params(hba, se_dev, page, count); | |
1676 | } | |
1677 | ||
1678 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1679 | .attr = { .ca_owner = THIS_MODULE, | |
1680 | .ca_name = "control", | |
1681 | .ca_mode = S_IWUSR }, | |
1682 | .show = NULL, | |
1683 | .store = target_core_store_dev_control, | |
1684 | }; | |
1685 | ||
1686 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1687 | { | |
1688 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1689 | ||
1690 | if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) | |
1691 | return 0; | |
1692 | ||
1693 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); | |
1694 | } | |
1695 | ||
1696 | static ssize_t target_core_store_dev_alias( | |
1697 | void *p, | |
1698 | const char *page, | |
1699 | size_t count) | |
1700 | { | |
1701 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1702 | struct se_hba *hba = se_dev->se_dev_hba; | |
1703 | ssize_t read_bytes; | |
1704 | ||
1705 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1706 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1707 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1708 | SE_DEV_ALIAS_LEN-1); | |
1709 | return -EINVAL; | |
1710 | } | |
1711 | ||
1712 | se_dev->su_dev_flags |= SDF_USING_ALIAS; | |
1713 | read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, | |
1714 | "%s", page); | |
1715 | ||
6708bb27 | 1716 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db NB |
1717 | config_item_name(&hba->hba_group.cg_item), |
1718 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1719 | se_dev->se_dev_alias); | |
1720 | ||
1721 | return read_bytes; | |
1722 | } | |
1723 | ||
1724 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1725 | .attr = { .ca_owner = THIS_MODULE, | |
1726 | .ca_name = "alias", | |
1727 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1728 | .show = target_core_show_dev_alias, | |
1729 | .store = target_core_store_dev_alias, | |
1730 | }; | |
1731 | ||
1732 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1733 | { | |
1734 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1735 | ||
1736 | if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) | |
1737 | return 0; | |
1738 | ||
1739 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); | |
1740 | } | |
1741 | ||
1742 | static ssize_t target_core_store_dev_udev_path( | |
1743 | void *p, | |
1744 | const char *page, | |
1745 | size_t count) | |
1746 | { | |
1747 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1748 | struct se_hba *hba = se_dev->se_dev_hba; | |
1749 | ssize_t read_bytes; | |
1750 | ||
1751 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1752 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1753 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1754 | SE_UDEV_PATH_LEN-1); | |
1755 | return -EINVAL; | |
1756 | } | |
1757 | ||
1758 | se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; | |
1759 | read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, | |
1760 | "%s", page); | |
1761 | ||
6708bb27 | 1762 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db NB |
1763 | config_item_name(&hba->hba_group.cg_item), |
1764 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1765 | se_dev->se_dev_udev_path); | |
1766 | ||
1767 | return read_bytes; | |
1768 | } | |
1769 | ||
1770 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1771 | .attr = { .ca_owner = THIS_MODULE, | |
1772 | .ca_name = "udev_path", | |
1773 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1774 | .show = target_core_show_dev_udev_path, | |
1775 | .store = target_core_store_dev_udev_path, | |
1776 | }; | |
1777 | ||
1778 | static ssize_t target_core_store_dev_enable( | |
1779 | void *p, | |
1780 | const char *page, | |
1781 | size_t count) | |
1782 | { | |
1783 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1784 | struct se_device *dev; | |
1785 | struct se_hba *hba = se_dev->se_dev_hba; | |
1786 | struct se_subsystem_api *t = hba->transport; | |
1787 | char *ptr; | |
1788 | ||
1789 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1790 | if (!ptr) { |
1791 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1792 | " is \"1\"\n"); |
1793 | return -EINVAL; | |
1794 | } | |
6708bb27 AG |
1795 | if (se_dev->se_dev_ptr) { |
1796 | pr_err("se_dev->se_dev_ptr already set for storage" | |
c66ac9db NB |
1797 | " object\n"); |
1798 | return -EEXIST; | |
1799 | } | |
1800 | ||
1801 | if (t->check_configfs_dev_params(hba, se_dev) < 0) | |
1802 | return -EINVAL; | |
1803 | ||
1804 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
613640e4 NB |
1805 | if (IS_ERR(dev)) |
1806 | return PTR_ERR(dev); | |
1807 | else if (!dev) | |
c66ac9db NB |
1808 | return -EINVAL; |
1809 | ||
1810 | se_dev->se_dev_ptr = dev; | |
6708bb27 | 1811 | pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" |
c66ac9db NB |
1812 | " %p\n", se_dev->se_dev_ptr); |
1813 | ||
1814 | return count; | |
1815 | } | |
1816 | ||
1817 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1818 | .attr = { .ca_owner = THIS_MODULE, | |
1819 | .ca_name = "enable", | |
1820 | .ca_mode = S_IWUSR }, | |
1821 | .show = NULL, | |
1822 | .store = target_core_store_dev_enable, | |
1823 | }; | |
1824 | ||
1825 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1826 | { | |
1827 | struct se_device *dev; | |
1828 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1829 | struct config_item *lu_ci; | |
1830 | struct t10_alua_lu_gp *lu_gp; | |
1831 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1832 | ssize_t len = 0; | |
1833 | ||
1834 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1835 | if (!dev) |
c66ac9db NB |
1836 | return -ENODEV; |
1837 | ||
e3d6f909 | 1838 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) |
c66ac9db NB |
1839 | return len; |
1840 | ||
1841 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 AG |
1842 | if (!lu_gp_mem) { |
1843 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" | |
c66ac9db NB |
1844 | " pointer\n"); |
1845 | return -EINVAL; | |
1846 | } | |
1847 | ||
1848 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1849 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1850 | if (lu_gp) { |
c66ac9db NB |
1851 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1852 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1853 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1854 | } | |
1855 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1856 | ||
1857 | return len; | |
1858 | } | |
1859 | ||
1860 | static ssize_t target_core_store_alua_lu_gp( | |
1861 | void *p, | |
1862 | const char *page, | |
1863 | size_t count) | |
1864 | { | |
1865 | struct se_device *dev; | |
1866 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1867 | struct se_hba *hba = su_dev->se_dev_hba; | |
1868 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; | |
1869 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1870 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1871 | int move = 0; | |
1872 | ||
1873 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1874 | if (!dev) |
c66ac9db NB |
1875 | return -ENODEV; |
1876 | ||
e3d6f909 | 1877 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { |
6708bb27 | 1878 | pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n", |
c66ac9db NB |
1879 | config_item_name(&hba->hba_group.cg_item), |
1880 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
1881 | return -EINVAL; | |
1882 | } | |
1883 | if (count > LU_GROUP_NAME_BUF) { | |
6708bb27 | 1884 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1885 | return -EINVAL; |
1886 | } | |
1887 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1888 | memcpy(buf, page, count); | |
1889 | /* | |
1890 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1891 | * making a new group association. | |
1892 | */ | |
1893 | if (strcmp(strstrip(buf), "NULL")) { | |
1894 | /* | |
1895 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1896 | * struct t10_alua_lu_gp. This reference is released with | |
1897 | * core_alua_get_lu_gp_by_name below(). | |
1898 | */ | |
1899 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1900 | if (!lu_gp_new) |
c66ac9db NB |
1901 | return -ENODEV; |
1902 | } | |
1903 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 | 1904 | if (!lu_gp_mem) { |
c66ac9db NB |
1905 | if (lu_gp_new) |
1906 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
6708bb27 | 1907 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" |
c66ac9db NB |
1908 | " pointer\n"); |
1909 | return -EINVAL; | |
1910 | } | |
1911 | ||
1912 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1913 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1914 | if (lu_gp) { |
c66ac9db NB |
1915 | /* |
1916 | * Clearing an existing lu_gp association, and replacing | |
1917 | * with NULL | |
1918 | */ | |
6708bb27 AG |
1919 | if (!lu_gp_new) { |
1920 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1921 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1922 | " %hu\n", | |
1923 | config_item_name(&hba->hba_group.cg_item), | |
1924 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1925 | config_item_name(&lu_gp->lu_gp_group.cg_item), | |
1926 | lu_gp->lu_gp_id); | |
1927 | ||
1928 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1929 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1930 | ||
1931 | return count; | |
1932 | } | |
1933 | /* | |
1934 | * Removing existing association of lu_gp_mem with lu_gp | |
1935 | */ | |
1936 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1937 | move = 1; | |
1938 | } | |
1939 | /* | |
1940 | * Associate lu_gp_mem with lu_gp_new. | |
1941 | */ | |
1942 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1943 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1944 | ||
6708bb27 | 1945 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1946 | " core/alua/lu_gps/%s, ID: %hu\n", |
1947 | (move) ? "Moving" : "Adding", | |
1948 | config_item_name(&hba->hba_group.cg_item), | |
1949 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1950 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), | |
1951 | lu_gp_new->lu_gp_id); | |
1952 | ||
1953 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1954 | return count; | |
1955 | } | |
1956 | ||
1957 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1958 | .attr = { .ca_owner = THIS_MODULE, | |
1959 | .ca_name = "alua_lu_gp", | |
1960 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1961 | .show = target_core_show_alua_lu_gp, | |
1962 | .store = target_core_store_alua_lu_gp, | |
1963 | }; | |
1964 | ||
1965 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1966 | &target_core_attr_dev_info.attr, | |
1967 | &target_core_attr_dev_control.attr, | |
1968 | &target_core_attr_dev_alias.attr, | |
1969 | &target_core_attr_dev_udev_path.attr, | |
1970 | &target_core_attr_dev_enable.attr, | |
1971 | &target_core_attr_dev_alua_lu_gp.attr, | |
1972 | NULL, | |
1973 | }; | |
1974 | ||
1975 | static void target_core_dev_release(struct config_item *item) | |
1976 | { | |
1977 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
1978 | struct se_subsystem_dev, se_dev_group); | |
1f6fe7cb NB |
1979 | struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); |
1980 | struct se_subsystem_api *t = hba->transport; | |
1981 | struct config_group *dev_cg = &se_dev->se_dev_group; | |
c66ac9db | 1982 | |
c66ac9db | 1983 | kfree(dev_cg->default_groups); |
1f6fe7cb NB |
1984 | /* |
1985 | * This pointer will set when the storage is enabled with: | |
1986 | *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` | |
1987 | */ | |
1988 | if (se_dev->se_dev_ptr) { | |
6708bb27 | 1989 | pr_debug("Target_Core_ConfigFS: Calling se_free_" |
1f6fe7cb NB |
1990 | "virtual_device() for se_dev_ptr: %p\n", |
1991 | se_dev->se_dev_ptr); | |
1992 | ||
1993 | se_free_virtual_device(se_dev->se_dev_ptr, hba); | |
1994 | } else { | |
1995 | /* | |
1996 | * Release struct se_subsystem_dev->se_dev_su_ptr.. | |
1997 | */ | |
6708bb27 | 1998 | pr_debug("Target_Core_ConfigFS: Calling t->free_" |
1f6fe7cb NB |
1999 | "device() for se_dev_su_ptr: %p\n", |
2000 | se_dev->se_dev_su_ptr); | |
2001 | ||
2002 | t->free_device(se_dev->se_dev_su_ptr); | |
2003 | } | |
2004 | ||
6708bb27 | 2005 | pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem" |
1f6fe7cb NB |
2006 | "_dev_t: %p\n", se_dev); |
2007 | kfree(se_dev); | |
c66ac9db NB |
2008 | } |
2009 | ||
2010 | static ssize_t target_core_dev_show(struct config_item *item, | |
2011 | struct configfs_attribute *attr, | |
2012 | char *page) | |
2013 | { | |
2014 | struct se_subsystem_dev *se_dev = container_of( | |
2015 | to_config_group(item), struct se_subsystem_dev, | |
2016 | se_dev_group); | |
2017 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2018 | attr, struct target_core_configfs_attribute, attr); | |
2019 | ||
6708bb27 | 2020 | if (!tc_attr->show) |
c66ac9db NB |
2021 | return -EINVAL; |
2022 | ||
5951146d | 2023 | return tc_attr->show(se_dev, page); |
c66ac9db NB |
2024 | } |
2025 | ||
2026 | static ssize_t target_core_dev_store(struct config_item *item, | |
2027 | struct configfs_attribute *attr, | |
2028 | const char *page, size_t count) | |
2029 | { | |
2030 | struct se_subsystem_dev *se_dev = container_of( | |
2031 | to_config_group(item), struct se_subsystem_dev, | |
2032 | se_dev_group); | |
2033 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2034 | attr, struct target_core_configfs_attribute, attr); | |
2035 | ||
6708bb27 | 2036 | if (!tc_attr->store) |
c66ac9db NB |
2037 | return -EINVAL; |
2038 | ||
5951146d | 2039 | return tc_attr->store(se_dev, page, count); |
c66ac9db NB |
2040 | } |
2041 | ||
2042 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2043 | .release = target_core_dev_release, | |
2044 | .show_attribute = target_core_dev_show, | |
2045 | .store_attribute = target_core_dev_store, | |
2046 | }; | |
2047 | ||
2048 | static struct config_item_type target_core_dev_cit = { | |
2049 | .ct_item_ops = &target_core_dev_item_ops, | |
2050 | .ct_attrs = lio_core_dev_attrs, | |
2051 | .ct_owner = THIS_MODULE, | |
2052 | }; | |
2053 | ||
2054 | /* End functions for struct config_item_type target_core_dev_cit */ | |
2055 | ||
2056 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2057 | ||
2058 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2059 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2060 | static struct target_core_alua_lu_gp_attribute \ | |
2061 | target_core_alua_lu_gp_##_name = \ | |
2062 | __CONFIGFS_EATTR(_name, _mode, \ | |
2063 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2064 | target_core_alua_lu_gp_store_attr_##_name); | |
2065 | ||
2066 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2067 | static struct target_core_alua_lu_gp_attribute \ | |
2068 | target_core_alua_lu_gp_##_name = \ | |
2069 | __CONFIGFS_EATTR_RO(_name, \ | |
2070 | target_core_alua_lu_gp_show_attr_##_name); | |
2071 | ||
2072 | /* | |
2073 | * lu_gp_id | |
2074 | */ | |
2075 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2076 | struct t10_alua_lu_gp *lu_gp, | |
2077 | char *page) | |
2078 | { | |
6708bb27 | 2079 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
2080 | return 0; |
2081 | ||
2082 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2083 | } | |
2084 | ||
2085 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2086 | struct t10_alua_lu_gp *lu_gp, | |
2087 | const char *page, | |
2088 | size_t count) | |
2089 | { | |
2090 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2091 | unsigned long lu_gp_id; | |
2092 | int ret; | |
2093 | ||
2094 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
2095 | if (ret < 0) { | |
6708bb27 | 2096 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2097 | " lu_gp_id\n", ret); |
2098 | return -EINVAL; | |
2099 | } | |
2100 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2101 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2102 | " 0x0000ffff\n", lu_gp_id); |
2103 | return -EINVAL; | |
2104 | } | |
2105 | ||
2106 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2107 | if (ret < 0) | |
2108 | return -EINVAL; | |
2109 | ||
6708bb27 | 2110 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2111 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2112 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2113 | lu_gp->lu_gp_id); | |
2114 | ||
2115 | return count; | |
2116 | } | |
2117 | ||
2118 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2119 | ||
2120 | /* | |
2121 | * members | |
2122 | */ | |
2123 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2124 | struct t10_alua_lu_gp *lu_gp, | |
2125 | char *page) | |
2126 | { | |
2127 | struct se_device *dev; | |
2128 | struct se_hba *hba; | |
2129 | struct se_subsystem_dev *su_dev; | |
2130 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2131 | ssize_t len = 0, cur_len; | |
2132 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2133 | ||
2134 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2135 | ||
2136 | spin_lock(&lu_gp->lu_gp_lock); | |
2137 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2138 | dev = lu_gp_mem->lu_gp_mem_dev; | |
2139 | su_dev = dev->se_sub_dev; | |
2140 | hba = su_dev->se_dev_hba; | |
2141 | ||
2142 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2143 | config_item_name(&hba->hba_group.cg_item), | |
2144 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
2145 | cur_len++; /* Extra byte for NULL terminator */ | |
2146 | ||
2147 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2148 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2149 | "_members buffer\n"); |
2150 | break; | |
2151 | } | |
2152 | memcpy(page+len, buf, cur_len); | |
2153 | len += cur_len; | |
2154 | } | |
2155 | spin_unlock(&lu_gp->lu_gp_lock); | |
2156 | ||
2157 | return len; | |
2158 | } | |
2159 | ||
2160 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2161 | ||
2162 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2163 | ||
2164 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2165 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2166 | &target_core_alua_lu_gp_members.attr, | |
2167 | NULL, | |
2168 | }; | |
2169 | ||
1f6fe7cb NB |
2170 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2171 | { | |
2172 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2173 | struct t10_alua_lu_gp, lu_gp_group); | |
2174 | ||
2175 | core_alua_free_lu_gp(lu_gp); | |
2176 | } | |
2177 | ||
c66ac9db | 2178 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2179 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2180 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2181 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2182 | }; | |
2183 | ||
2184 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2185 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2186 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2187 | .ct_owner = THIS_MODULE, | |
2188 | }; | |
2189 | ||
2190 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2191 | ||
2192 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2193 | ||
2194 | static struct config_group *target_core_alua_create_lu_gp( | |
2195 | struct config_group *group, | |
2196 | const char *name) | |
2197 | { | |
2198 | struct t10_alua_lu_gp *lu_gp; | |
2199 | struct config_group *alua_lu_gp_cg = NULL; | |
2200 | struct config_item *alua_lu_gp_ci = NULL; | |
2201 | ||
2202 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2203 | if (IS_ERR(lu_gp)) | |
2204 | return NULL; | |
2205 | ||
2206 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2207 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2208 | ||
2209 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2210 | &target_core_alua_lu_gp_cit); | |
2211 | ||
6708bb27 | 2212 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2213 | " Group: core/alua/lu_gps/%s\n", |
2214 | config_item_name(alua_lu_gp_ci)); | |
2215 | ||
2216 | return alua_lu_gp_cg; | |
2217 | ||
2218 | } | |
2219 | ||
2220 | static void target_core_alua_drop_lu_gp( | |
2221 | struct config_group *group, | |
2222 | struct config_item *item) | |
2223 | { | |
2224 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2225 | struct t10_alua_lu_gp, lu_gp_group); | |
2226 | ||
6708bb27 | 2227 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2228 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2229 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2230 | /* |
2231 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2232 | * -> target_core_alua_lu_gp_release() | |
2233 | */ | |
c66ac9db | 2234 | config_item_put(item); |
c66ac9db NB |
2235 | } |
2236 | ||
2237 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2238 | .make_group = &target_core_alua_create_lu_gp, | |
2239 | .drop_item = &target_core_alua_drop_lu_gp, | |
2240 | }; | |
2241 | ||
2242 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2243 | .ct_item_ops = NULL, | |
2244 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2245 | .ct_owner = THIS_MODULE, | |
2246 | }; | |
2247 | ||
2248 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2249 | ||
2250 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2251 | ||
2252 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2253 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2254 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2255 | target_core_alua_tg_pt_gp_##_name = \ | |
2256 | __CONFIGFS_EATTR(_name, _mode, \ | |
2257 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2258 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2259 | ||
2260 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2261 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2262 | target_core_alua_tg_pt_gp_##_name = \ | |
2263 | __CONFIGFS_EATTR_RO(_name, \ | |
2264 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2265 | ||
2266 | /* | |
2267 | * alua_access_state | |
2268 | */ | |
2269 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2270 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2271 | char *page) | |
2272 | { | |
2273 | return sprintf(page, "%d\n", | |
2274 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2275 | } | |
2276 | ||
2277 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2278 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2279 | const char *page, | |
2280 | size_t count) | |
2281 | { | |
2282 | struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; | |
2283 | unsigned long tmp; | |
2284 | int new_state, ret; | |
2285 | ||
6708bb27 AG |
2286 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2287 | pr_err("Unable to do implict ALUA on non valid" | |
c66ac9db NB |
2288 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2289 | return -EINVAL; | |
2290 | } | |
2291 | ||
2292 | ret = strict_strtoul(page, 0, &tmp); | |
2293 | if (ret < 0) { | |
6708bb27 | 2294 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db NB |
2295 | " %s\n", page); |
2296 | return -EINVAL; | |
2297 | } | |
2298 | new_state = (int)tmp; | |
2299 | ||
2300 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
6708bb27 | 2301 | pr_err("Unable to process implict configfs ALUA" |
c66ac9db NB |
2302 | " transition while TPGS_IMPLICT_ALUA is diabled\n"); |
2303 | return -EINVAL; | |
2304 | } | |
2305 | ||
2306 | ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, | |
2307 | NULL, NULL, new_state, 0); | |
2308 | return (!ret) ? count : -EINVAL; | |
2309 | } | |
2310 | ||
2311 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2312 | ||
2313 | /* | |
2314 | * alua_access_status | |
2315 | */ | |
2316 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2317 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2318 | char *page) | |
2319 | { | |
2320 | return sprintf(page, "%s\n", | |
2321 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2322 | } | |
2323 | ||
2324 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2325 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2326 | const char *page, | |
2327 | size_t count) | |
2328 | { | |
2329 | unsigned long tmp; | |
2330 | int new_status, ret; | |
2331 | ||
6708bb27 AG |
2332 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2333 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2334 | " valid tg_pt_gp ID: %hu\n", |
2335 | tg_pt_gp->tg_pt_gp_valid_id); | |
2336 | return -EINVAL; | |
2337 | } | |
2338 | ||
2339 | ret = strict_strtoul(page, 0, &tmp); | |
2340 | if (ret < 0) { | |
6708bb27 | 2341 | pr_err("Unable to extract new ALUA access status" |
c66ac9db NB |
2342 | " from %s\n", page); |
2343 | return -EINVAL; | |
2344 | } | |
2345 | new_status = (int)tmp; | |
2346 | ||
2347 | if ((new_status != ALUA_STATUS_NONE) && | |
2348 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2349 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
6708bb27 | 2350 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2351 | new_status); |
2352 | return -EINVAL; | |
2353 | } | |
2354 | ||
2355 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2356 | return count; | |
2357 | } | |
2358 | ||
2359 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2360 | ||
2361 | /* | |
2362 | * alua_access_type | |
2363 | */ | |
2364 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2365 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2366 | char *page) | |
2367 | { | |
2368 | return core_alua_show_access_type(tg_pt_gp, page); | |
2369 | } | |
2370 | ||
2371 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2372 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2373 | const char *page, | |
2374 | size_t count) | |
2375 | { | |
2376 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2377 | } | |
2378 | ||
2379 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2380 | ||
2381 | /* | |
2382 | * alua_write_metadata | |
2383 | */ | |
2384 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2385 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2386 | char *page) | |
2387 | { | |
2388 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2389 | } | |
2390 | ||
2391 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2392 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2393 | const char *page, | |
2394 | size_t count) | |
2395 | { | |
2396 | unsigned long tmp; | |
2397 | int ret; | |
2398 | ||
2399 | ret = strict_strtoul(page, 0, &tmp); | |
2400 | if (ret < 0) { | |
6708bb27 | 2401 | pr_err("Unable to extract alua_write_metadata\n"); |
c66ac9db NB |
2402 | return -EINVAL; |
2403 | } | |
2404 | ||
2405 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2406 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2407 | " %lu\n", tmp); |
2408 | return -EINVAL; | |
2409 | } | |
2410 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2411 | ||
2412 | return count; | |
2413 | } | |
2414 | ||
2415 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2416 | ||
2417 | ||
2418 | ||
2419 | /* | |
2420 | * nonop_delay_msecs | |
2421 | */ | |
2422 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2423 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2424 | char *page) | |
2425 | { | |
2426 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2427 | ||
2428 | } | |
2429 | ||
2430 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2431 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2432 | const char *page, | |
2433 | size_t count) | |
2434 | { | |
2435 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2436 | } | |
2437 | ||
2438 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2439 | ||
2440 | /* | |
2441 | * trans_delay_msecs | |
2442 | */ | |
2443 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2444 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2445 | char *page) | |
2446 | { | |
2447 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2448 | } | |
2449 | ||
2450 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2451 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2452 | const char *page, | |
2453 | size_t count) | |
2454 | { | |
2455 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2456 | } | |
2457 | ||
2458 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2459 | ||
2460 | /* | |
2461 | * preferred | |
2462 | */ | |
2463 | ||
2464 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2465 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2466 | char *page) | |
2467 | { | |
2468 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2469 | } | |
2470 | ||
2471 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2472 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2473 | const char *page, | |
2474 | size_t count) | |
2475 | { | |
2476 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2477 | } | |
2478 | ||
2479 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2480 | ||
2481 | /* | |
2482 | * tg_pt_gp_id | |
2483 | */ | |
2484 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2485 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2486 | char *page) | |
2487 | { | |
6708bb27 | 2488 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2489 | return 0; |
2490 | ||
2491 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2492 | } | |
2493 | ||
2494 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2495 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2496 | const char *page, | |
2497 | size_t count) | |
2498 | { | |
2499 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2500 | unsigned long tg_pt_gp_id; | |
2501 | int ret; | |
2502 | ||
2503 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2504 | if (ret < 0) { | |
6708bb27 | 2505 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2506 | " tg_pt_gp_id\n", ret); |
2507 | return -EINVAL; | |
2508 | } | |
2509 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2510 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2511 | " 0x0000ffff\n", tg_pt_gp_id); |
2512 | return -EINVAL; | |
2513 | } | |
2514 | ||
2515 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2516 | if (ret < 0) | |
2517 | return -EINVAL; | |
2518 | ||
6708bb27 | 2519 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2520 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2521 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2522 | tg_pt_gp->tg_pt_gp_id); | |
2523 | ||
2524 | return count; | |
2525 | } | |
2526 | ||
2527 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2528 | ||
2529 | /* | |
2530 | * members | |
2531 | */ | |
2532 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2533 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2534 | char *page) | |
2535 | { | |
2536 | struct se_port *port; | |
2537 | struct se_portal_group *tpg; | |
2538 | struct se_lun *lun; | |
2539 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2540 | ssize_t len = 0, cur_len; | |
2541 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2542 | ||
2543 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2544 | ||
2545 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2546 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2547 | tg_pt_gp_mem_list) { | |
2548 | port = tg_pt_gp_mem->tg_pt; | |
2549 | tpg = port->sep_tpg; | |
2550 | lun = port->sep_lun; | |
2551 | ||
2552 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2553 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2554 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2555 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2556 | config_item_name(&lun->lun_group.cg_item)); |
2557 | cur_len++; /* Extra byte for NULL terminator */ | |
2558 | ||
2559 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2560 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2561 | "_members buffer\n"); |
2562 | break; | |
2563 | } | |
2564 | memcpy(page+len, buf, cur_len); | |
2565 | len += cur_len; | |
2566 | } | |
2567 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2568 | ||
2569 | return len; | |
2570 | } | |
2571 | ||
2572 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2573 | ||
2574 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2575 | tg_pt_gp_group); | |
2576 | ||
2577 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2578 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2579 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2580 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2581 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2582 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2583 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
2584 | &target_core_alua_tg_pt_gp_preferred.attr, | |
2585 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2586 | &target_core_alua_tg_pt_gp_members.attr, | |
2587 | NULL, | |
2588 | }; | |
2589 | ||
1f6fe7cb NB |
2590 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2591 | { | |
2592 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2593 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2594 | ||
2595 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2596 | } | |
2597 | ||
c66ac9db | 2598 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2599 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2600 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2601 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2602 | }; | |
2603 | ||
2604 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2605 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2606 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2607 | .ct_owner = THIS_MODULE, | |
2608 | }; | |
2609 | ||
2610 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2611 | ||
2612 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2613 | ||
2614 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2615 | struct config_group *group, | |
2616 | const char *name) | |
2617 | { | |
2618 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2619 | alua_tg_pt_gps_group); | |
2620 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2621 | struct se_subsystem_dev *su_dev = alua->t10_sub_dev; | |
2622 | struct config_group *alua_tg_pt_gp_cg = NULL; | |
2623 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2624 | ||
2625 | tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); | |
6708bb27 | 2626 | if (!tg_pt_gp) |
c66ac9db NB |
2627 | return NULL; |
2628 | ||
2629 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2630 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2631 | ||
2632 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2633 | &target_core_alua_tg_pt_gp_cit); | |
2634 | ||
6708bb27 | 2635 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2636 | " Group: alua/tg_pt_gps/%s\n", |
2637 | config_item_name(alua_tg_pt_gp_ci)); | |
2638 | ||
2639 | return alua_tg_pt_gp_cg; | |
2640 | } | |
2641 | ||
2642 | static void target_core_alua_drop_tg_pt_gp( | |
2643 | struct config_group *group, | |
2644 | struct config_item *item) | |
2645 | { | |
2646 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2647 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2648 | ||
6708bb27 | 2649 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2650 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2651 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2652 | /* |
2653 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2654 | * -> target_core_alua_tg_pt_gp_release(). | |
2655 | */ | |
c66ac9db | 2656 | config_item_put(item); |
c66ac9db NB |
2657 | } |
2658 | ||
2659 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2660 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2661 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2662 | }; | |
2663 | ||
2664 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2665 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2666 | .ct_owner = THIS_MODULE, | |
2667 | }; | |
2668 | ||
2669 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2670 | ||
2671 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2672 | ||
2673 | /* | |
2674 | * target_core_alua_cit is a ConfigFS group that lives under | |
2675 | * /sys/kernel/config/target/core/alua. There are default groups | |
2676 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2677 | * target_core_alua_cit in target_core_init_configfs() below. | |
2678 | */ | |
2679 | static struct config_item_type target_core_alua_cit = { | |
2680 | .ct_item_ops = NULL, | |
2681 | .ct_attrs = NULL, | |
2682 | .ct_owner = THIS_MODULE, | |
2683 | }; | |
2684 | ||
2685 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2686 | ||
12d23384 NB |
2687 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2688 | ||
2689 | static struct config_group *target_core_stat_mkdir( | |
2690 | struct config_group *group, | |
2691 | const char *name) | |
2692 | { | |
2693 | return ERR_PTR(-ENOSYS); | |
2694 | } | |
2695 | ||
2696 | static void target_core_stat_rmdir( | |
2697 | struct config_group *group, | |
2698 | struct config_item *item) | |
2699 | { | |
2700 | return; | |
2701 | } | |
2702 | ||
2703 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2704 | .make_group = &target_core_stat_mkdir, | |
2705 | .drop_item = &target_core_stat_rmdir, | |
2706 | }; | |
2707 | ||
2708 | static struct config_item_type target_core_stat_cit = { | |
2709 | .ct_group_ops = &target_core_stat_group_ops, | |
2710 | .ct_owner = THIS_MODULE, | |
2711 | }; | |
2712 | ||
2713 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2714 | ||
c66ac9db NB |
2715 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2716 | ||
2717 | static struct config_group *target_core_make_subdev( | |
2718 | struct config_group *group, | |
2719 | const char *name) | |
2720 | { | |
2721 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2722 | struct se_subsystem_dev *se_dev; | |
2723 | struct se_subsystem_api *t; | |
2724 | struct config_item *hba_ci = &group->cg_item; | |
2725 | struct se_hba *hba = item_to_hba(hba_ci); | |
2726 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; | |
12d23384 NB |
2727 | struct config_group *dev_stat_grp = NULL; |
2728 | int errno = -ENOMEM, ret; | |
c66ac9db | 2729 | |
12d23384 NB |
2730 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2731 | if (ret) | |
2732 | return ERR_PTR(ret); | |
c66ac9db NB |
2733 | /* |
2734 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2735 | */ | |
2736 | t = hba->transport; | |
2737 | ||
2738 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
2739 | if (!se_dev) { | |
6708bb27 | 2740 | pr_err("Unable to allocate memory for" |
c66ac9db NB |
2741 | " struct se_subsystem_dev\n"); |
2742 | goto unlock; | |
2743 | } | |
e3d6f909 | 2744 | INIT_LIST_HEAD(&se_dev->se_dev_node); |
c66ac9db NB |
2745 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
2746 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
2747 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
2748 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
2749 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
2750 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
2751 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
2752 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
2753 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 2754 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
2755 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
2756 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
2757 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
2758 | ||
2759 | se_dev->se_dev_hba = hba; | |
2760 | dev_cg = &se_dev->se_dev_group; | |
2761 | ||
12d23384 | 2762 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, |
c66ac9db | 2763 | GFP_KERNEL); |
6708bb27 | 2764 | if (!dev_cg->default_groups) |
c66ac9db NB |
2765 | goto out; |
2766 | /* | |
2767 | * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr | |
2768 | * for ->allocate_virtdevice() | |
2769 | * | |
2770 | * se_dev->se_dev_ptr will be set after ->create_virtdev() | |
2771 | * has been called successfully in the next level up in the | |
2772 | * configfs tree for device object's struct config_group. | |
2773 | */ | |
2774 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); | |
6708bb27 AG |
2775 | if (!se_dev->se_dev_su_ptr) { |
2776 | pr_err("Unable to locate subsystem dependent pointer" | |
c66ac9db NB |
2777 | " from allocate_virtdevice()\n"); |
2778 | goto out; | |
2779 | } | |
e3d6f909 AG |
2780 | spin_lock(&se_device_lock); |
2781 | list_add_tail(&se_dev->se_dev_node, &se_dev_list); | |
2782 | spin_unlock(&se_device_lock); | |
c66ac9db NB |
2783 | |
2784 | config_group_init_type_name(&se_dev->se_dev_group, name, | |
2785 | &target_core_dev_cit); | |
2786 | config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", | |
2787 | &target_core_dev_attrib_cit); | |
2788 | config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", | |
2789 | &target_core_dev_pr_cit); | |
2790 | config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", | |
2791 | &target_core_dev_wwn_cit); | |
2792 | config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, | |
2793 | "alua", &target_core_alua_tg_pt_gps_cit); | |
12d23384 NB |
2794 | config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, |
2795 | "statistics", &target_core_stat_cit); | |
2796 | ||
c66ac9db NB |
2797 | dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; |
2798 | dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; | |
2799 | dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; | |
2800 | dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; | |
12d23384 NB |
2801 | dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; |
2802 | dev_cg->default_groups[5] = NULL; | |
c66ac9db | 2803 | /* |
12d23384 | 2804 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db NB |
2805 | */ |
2806 | tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); | |
6708bb27 | 2807 | if (!tg_pt_gp) |
c66ac9db NB |
2808 | goto out; |
2809 | ||
e3d6f909 | 2810 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2811 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2812 | GFP_KERNEL); | |
6708bb27 AG |
2813 | if (!tg_pt_gp_cg->default_groups) { |
2814 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db NB |
2815 | "default_groups\n"); |
2816 | goto out; | |
2817 | } | |
2818 | ||
2819 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2820 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2821 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2822 | tg_pt_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2823 | se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
12d23384 NB |
2824 | /* |
2825 | * Add core/$HBA/$DEV/statistics/ default groups | |
2826 | */ | |
e3d6f909 | 2827 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2828 | dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, |
2829 | GFP_KERNEL); | |
2830 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2831 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
12d23384 NB |
2832 | goto out; |
2833 | } | |
2834 | target_stat_setup_dev_default_groups(se_dev); | |
c66ac9db | 2835 | |
6708bb27 | 2836 | pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" |
c66ac9db NB |
2837 | " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); |
2838 | ||
2839 | mutex_unlock(&hba->hba_access_mutex); | |
2840 | return &se_dev->se_dev_group; | |
2841 | out: | |
e3d6f909 AG |
2842 | if (se_dev->t10_alua.default_tg_pt_gp) { |
2843 | core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp); | |
2844 | se_dev->t10_alua.default_tg_pt_gp = NULL; | |
c66ac9db | 2845 | } |
12d23384 NB |
2846 | if (dev_stat_grp) |
2847 | kfree(dev_stat_grp->default_groups); | |
c66ac9db NB |
2848 | if (tg_pt_gp_cg) |
2849 | kfree(tg_pt_gp_cg->default_groups); | |
2850 | if (dev_cg) | |
2851 | kfree(dev_cg->default_groups); | |
2852 | if (se_dev->se_dev_su_ptr) | |
2853 | t->free_device(se_dev->se_dev_su_ptr); | |
2854 | kfree(se_dev); | |
2855 | unlock: | |
2856 | mutex_unlock(&hba->hba_access_mutex); | |
12d23384 | 2857 | return ERR_PTR(errno); |
c66ac9db NB |
2858 | } |
2859 | ||
2860 | static void target_core_drop_subdev( | |
2861 | struct config_group *group, | |
2862 | struct config_item *item) | |
2863 | { | |
2864 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2865 | struct se_subsystem_dev, se_dev_group); | |
2866 | struct se_hba *hba; | |
2867 | struct se_subsystem_api *t; | |
2868 | struct config_item *df_item; | |
12d23384 | 2869 | struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2870 | int i; |
c66ac9db NB |
2871 | |
2872 | hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); | |
2873 | ||
1f6fe7cb | 2874 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db NB |
2875 | t = hba->transport; |
2876 | ||
e3d6f909 AG |
2877 | spin_lock(&se_device_lock); |
2878 | list_del(&se_dev->se_dev_node); | |
2879 | spin_unlock(&se_device_lock); | |
c66ac9db | 2880 | |
e3d6f909 | 2881 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2882 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2883 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2884 | dev_stat_grp->default_groups[i] = NULL; | |
2885 | config_item_put(df_item); | |
2886 | } | |
2887 | kfree(dev_stat_grp->default_groups); | |
2888 | ||
e3d6f909 | 2889 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2890 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2891 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2892 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2893 | config_item_put(df_item); | |
2894 | } | |
2895 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2896 | /* |
2897 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2898 | * directly from target_core_alua_tg_pt_gp_release(). | |
2899 | */ | |
e3d6f909 | 2900 | se_dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db NB |
2901 | |
2902 | dev_cg = &se_dev->se_dev_group; | |
2903 | for (i = 0; dev_cg->default_groups[i]; i++) { | |
2904 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2905 | dev_cg->default_groups[i] = NULL; | |
2906 | config_item_put(df_item); | |
2907 | } | |
c66ac9db | 2908 | /* |
1f6fe7cb NB |
2909 | * The releasing of se_dev and associated se_dev->se_dev_ptr is done |
2910 | * from target_core_dev_item_ops->release() ->target_core_dev_release(). | |
c66ac9db | 2911 | */ |
1f6fe7cb | 2912 | config_item_put(item); |
c66ac9db | 2913 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2914 | } |
2915 | ||
2916 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2917 | .make_group = target_core_make_subdev, | |
2918 | .drop_item = target_core_drop_subdev, | |
2919 | }; | |
2920 | ||
2921 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2922 | #define SE_HBA_ATTR(_name, _mode) \ | |
2923 | static struct target_core_hba_attribute \ | |
2924 | target_core_hba_##_name = \ | |
2925 | __CONFIGFS_EATTR(_name, _mode, \ | |
2926 | target_core_hba_show_attr_##_name, \ | |
2927 | target_core_hba_store_attr_##_name); | |
2928 | ||
2929 | #define SE_HBA_ATTR_RO(_name) \ | |
2930 | static struct target_core_hba_attribute \ | |
2931 | target_core_hba_##_name = \ | |
2932 | __CONFIGFS_EATTR_RO(_name, \ | |
2933 | target_core_hba_show_attr_##_name); | |
2934 | ||
2935 | static ssize_t target_core_hba_show_attr_hba_info( | |
2936 | struct se_hba *hba, | |
2937 | char *page) | |
2938 | { | |
2939 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2940 | hba->hba_id, hba->transport->name, | |
2941 | TARGET_CORE_CONFIGFS_VERSION); | |
2942 | } | |
2943 | ||
2944 | SE_HBA_ATTR_RO(hba_info); | |
2945 | ||
2946 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2947 | char *page) | |
2948 | { | |
2949 | int hba_mode = 0; | |
2950 | ||
2951 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2952 | hba_mode = 1; | |
2953 | ||
2954 | return sprintf(page, "%d\n", hba_mode); | |
2955 | } | |
2956 | ||
2957 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2958 | const char *page, size_t count) | |
2959 | { | |
2960 | struct se_subsystem_api *transport = hba->transport; | |
2961 | unsigned long mode_flag; | |
2962 | int ret; | |
2963 | ||
2964 | if (transport->pmode_enable_hba == NULL) | |
2965 | return -EINVAL; | |
2966 | ||
2967 | ret = strict_strtoul(page, 0, &mode_flag); | |
2968 | if (ret < 0) { | |
6708bb27 | 2969 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
c66ac9db NB |
2970 | return -EINVAL; |
2971 | } | |
2972 | ||
2973 | spin_lock(&hba->device_lock); | |
6708bb27 AG |
2974 | if (!list_empty(&hba->hba_dev_list)) { |
2975 | pr_err("Unable to set hba_mode with active devices\n"); | |
c66ac9db NB |
2976 | spin_unlock(&hba->device_lock); |
2977 | return -EINVAL; | |
2978 | } | |
2979 | spin_unlock(&hba->device_lock); | |
2980 | ||
2981 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2982 | if (ret < 0) | |
2983 | return -EINVAL; | |
2984 | if (ret > 0) | |
2985 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2986 | else if (ret == 0) | |
2987 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2988 | ||
2989 | return count; | |
2990 | } | |
2991 | ||
2992 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2993 | ||
2994 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2995 | ||
1f6fe7cb NB |
2996 | static void target_core_hba_release(struct config_item *item) |
2997 | { | |
2998 | struct se_hba *hba = container_of(to_config_group(item), | |
2999 | struct se_hba, hba_group); | |
3000 | core_delete_hba(hba); | |
3001 | } | |
3002 | ||
c66ac9db NB |
3003 | static struct configfs_attribute *target_core_hba_attrs[] = { |
3004 | &target_core_hba_hba_info.attr, | |
3005 | &target_core_hba_hba_mode.attr, | |
3006 | NULL, | |
3007 | }; | |
3008 | ||
3009 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3010 | .release = target_core_hba_release, |
c66ac9db NB |
3011 | .show_attribute = target_core_hba_attr_show, |
3012 | .store_attribute = target_core_hba_attr_store, | |
3013 | }; | |
3014 | ||
3015 | static struct config_item_type target_core_hba_cit = { | |
3016 | .ct_item_ops = &target_core_hba_item_ops, | |
3017 | .ct_group_ops = &target_core_hba_group_ops, | |
3018 | .ct_attrs = target_core_hba_attrs, | |
3019 | .ct_owner = THIS_MODULE, | |
3020 | }; | |
3021 | ||
3022 | static struct config_group *target_core_call_addhbatotarget( | |
3023 | struct config_group *group, | |
3024 | const char *name) | |
3025 | { | |
3026 | char *se_plugin_str, *str, *str2; | |
3027 | struct se_hba *hba; | |
3028 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3029 | unsigned long plugin_dep_id = 0; | |
3030 | int ret; | |
3031 | ||
3032 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3033 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3034 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3035 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3036 | TARGET_CORE_NAME_MAX_LEN); | |
3037 | return ERR_PTR(-ENAMETOOLONG); | |
3038 | } | |
3039 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3040 | ||
3041 | str = strstr(buf, "_"); | |
6708bb27 AG |
3042 | if (!str) { |
3043 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3044 | return ERR_PTR(-EINVAL); |
3045 | } | |
3046 | se_plugin_str = buf; | |
3047 | /* | |
3048 | * Special case for subsystem plugins that have "_" in their names. | |
3049 | * Namely rd_direct and rd_mcp.. | |
3050 | */ | |
3051 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3052 | if (str2) { |
c66ac9db NB |
3053 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3054 | str2++; /* Skip to start of plugin dependent ID */ | |
3055 | str = str2; | |
3056 | } else { | |
3057 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3058 | str++; /* Skip to start of plugin dependent ID */ | |
3059 | } | |
3060 | ||
3061 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
3062 | if (ret < 0) { | |
6708bb27 | 3063 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
3064 | " plugin_dep_id\n", ret); |
3065 | return ERR_PTR(-EINVAL); | |
3066 | } | |
3067 | /* | |
3068 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3069 | */ | |
dbc5623e | 3070 | transport_subsystem_check_init(); |
c66ac9db NB |
3071 | |
3072 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3073 | if (IS_ERR(hba)) | |
3074 | return ERR_CAST(hba); | |
3075 | ||
3076 | config_group_init_type_name(&hba->hba_group, name, | |
3077 | &target_core_hba_cit); | |
3078 | ||
3079 | return &hba->hba_group; | |
3080 | } | |
3081 | ||
3082 | static void target_core_call_delhbafromtarget( | |
3083 | struct config_group *group, | |
3084 | struct config_item *item) | |
3085 | { | |
1f6fe7cb NB |
3086 | /* |
3087 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3088 | * -> target_core_hba_release() | |
3089 | */ | |
c66ac9db | 3090 | config_item_put(item); |
c66ac9db NB |
3091 | } |
3092 | ||
3093 | static struct configfs_group_operations target_core_group_ops = { | |
3094 | .make_group = target_core_call_addhbatotarget, | |
3095 | .drop_item = target_core_call_delhbafromtarget, | |
3096 | }; | |
3097 | ||
3098 | static struct config_item_type target_core_cit = { | |
3099 | .ct_item_ops = NULL, | |
3100 | .ct_group_ops = &target_core_group_ops, | |
3101 | .ct_attrs = NULL, | |
3102 | .ct_owner = THIS_MODULE, | |
3103 | }; | |
3104 | ||
3105 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3106 | ||
54550fab | 3107 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3108 | { |
3109 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3110 | struct config_group *lu_gp_cg = NULL; | |
3111 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3112 | struct t10_alua_lu_gp *lu_gp; |
3113 | int ret; | |
3114 | ||
6708bb27 | 3115 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3116 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3117 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3118 | ||
3119 | subsys = target_core_subsystem[0]; | |
3120 | config_group_init(&subsys->su_group); | |
3121 | mutex_init(&subsys->su_mutex); | |
3122 | ||
3123 | INIT_LIST_HEAD(&g_tf_list); | |
3124 | mutex_init(&g_tf_lock); | |
e3d6f909 | 3125 | ret = init_se_kmem_caches(); |
c66ac9db | 3126 | if (ret < 0) |
e3d6f909 | 3127 | return ret; |
c66ac9db NB |
3128 | /* |
3129 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3130 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3131 | */ | |
3132 | target_cg = &subsys->su_group; | |
3133 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3134 | GFP_KERNEL); | |
6708bb27 AG |
3135 | if (!target_cg->default_groups) { |
3136 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
c66ac9db NB |
3137 | goto out_global; |
3138 | } | |
3139 | ||
e3d6f909 | 3140 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3141 | "core", &target_core_cit); |
e3d6f909 | 3142 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3143 | target_cg->default_groups[1] = NULL; |
3144 | /* | |
3145 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3146 | */ | |
e3d6f909 | 3147 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3148 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3149 | GFP_KERNEL); | |
6708bb27 AG |
3150 | if (!hba_cg->default_groups) { |
3151 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
c66ac9db NB |
3152 | goto out_global; |
3153 | } | |
e3d6f909 | 3154 | config_group_init_type_name(&alua_group, |
c66ac9db | 3155 | "alua", &target_core_alua_cit); |
e3d6f909 | 3156 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3157 | hba_cg->default_groups[1] = NULL; |
3158 | /* | |
3159 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3160 | * groups under /sys/kernel/config/target/core/alua/ | |
3161 | */ | |
e3d6f909 | 3162 | alua_cg = &alua_group; |
c66ac9db NB |
3163 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3164 | GFP_KERNEL); | |
6708bb27 AG |
3165 | if (!alua_cg->default_groups) { |
3166 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
c66ac9db NB |
3167 | goto out_global; |
3168 | } | |
3169 | ||
e3d6f909 | 3170 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3171 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3172 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3173 | alua_cg->default_groups[1] = NULL; |
3174 | /* | |
3175 | * Add core/alua/lu_gps/default_lu_gp | |
3176 | */ | |
3177 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
3178 | if (IS_ERR(lu_gp)) | |
3179 | goto out_global; | |
3180 | ||
e3d6f909 | 3181 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3182 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3183 | GFP_KERNEL); | |
6708bb27 AG |
3184 | if (!lu_gp_cg->default_groups) { |
3185 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
c66ac9db NB |
3186 | goto out_global; |
3187 | } | |
3188 | ||
3189 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3190 | &target_core_alua_lu_gp_cit); | |
3191 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3192 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3193 | default_lu_gp = lu_gp; |
c66ac9db NB |
3194 | /* |
3195 | * Register the target_core_mod subsystem with configfs. | |
3196 | */ | |
3197 | ret = configfs_register_subsystem(subsys); | |
3198 | if (ret < 0) { | |
6708bb27 | 3199 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3200 | ret, subsys->su_group.cg_item.ci_namebuf); |
3201 | goto out_global; | |
3202 | } | |
6708bb27 | 3203 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
3204 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
3205 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3206 | /* | |
3207 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3208 | */ | |
3209 | ret = rd_module_init(); | |
3210 | if (ret < 0) | |
3211 | goto out; | |
3212 | ||
3213 | if (core_dev_setup_virtual_lun0() < 0) | |
3214 | goto out; | |
3215 | ||
c66ac9db NB |
3216 | return 0; |
3217 | ||
3218 | out: | |
3219 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3220 | core_dev_release_virtual_lun0(); |
3221 | rd_module_exit(); | |
3222 | out_global: | |
e3d6f909 AG |
3223 | if (default_lu_gp) { |
3224 | core_alua_free_lu_gp(default_lu_gp); | |
3225 | default_lu_gp = NULL; | |
c66ac9db NB |
3226 | } |
3227 | if (lu_gp_cg) | |
3228 | kfree(lu_gp_cg->default_groups); | |
3229 | if (alua_cg) | |
3230 | kfree(alua_cg->default_groups); | |
3231 | if (hba_cg) | |
3232 | kfree(hba_cg->default_groups); | |
3233 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3234 | release_se_kmem_caches(); |
3235 | return ret; | |
c66ac9db NB |
3236 | } |
3237 | ||
54550fab | 3238 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3239 | { |
3240 | struct configfs_subsystem *subsys; | |
3241 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3242 | struct config_item *item; | |
3243 | int i; | |
3244 | ||
c66ac9db NB |
3245 | subsys = target_core_subsystem[0]; |
3246 | ||
e3d6f909 | 3247 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3248 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3249 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3250 | lu_gp_cg->default_groups[i] = NULL; | |
3251 | config_item_put(item); | |
3252 | } | |
3253 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3254 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3255 | |
e3d6f909 | 3256 | alua_cg = &alua_group; |
c66ac9db NB |
3257 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3258 | item = &alua_cg->default_groups[i]->cg_item; | |
3259 | alua_cg->default_groups[i] = NULL; | |
3260 | config_item_put(item); | |
3261 | } | |
3262 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3263 | alua_cg->default_groups = NULL; |
c66ac9db | 3264 | |
e3d6f909 | 3265 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3266 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3267 | item = &hba_cg->default_groups[i]->cg_item; | |
3268 | hba_cg->default_groups[i] = NULL; | |
3269 | config_item_put(item); | |
3270 | } | |
3271 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3272 | hba_cg->default_groups = NULL; |
3273 | /* | |
3274 | * We expect subsys->su_group.default_groups to be released | |
3275 | * by configfs subsystem provider logic.. | |
3276 | */ | |
3277 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3278 | kfree(subsys->su_group.default_groups); |
3279 | ||
e3d6f909 AG |
3280 | core_alua_free_lu_gp(default_lu_gp); |
3281 | default_lu_gp = NULL; | |
7c2bf6e9 | 3282 | |
6708bb27 | 3283 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3284 | " Infrastructure\n"); |
3285 | ||
c66ac9db NB |
3286 | core_dev_release_virtual_lun0(); |
3287 | rd_module_exit(); | |
e3d6f909 | 3288 | release_se_kmem_caches(); |
c66ac9db NB |
3289 | } |
3290 | ||
3291 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3292 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3293 | MODULE_LICENSE("GPL"); | |
3294 | ||
3295 | module_init(target_core_init_configfs); | |
3296 | module_exit(target_core_exit_configfs); |