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