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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_configfs.c | |
3 | * | |
4 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
5 | * | |
12d23384 NB |
6 | * Copyright (c) 2008-2011 Rising Tide Systems |
7 | * Copyright (c) 2008-2011 Linux-iSCSI.org | |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | ****************************************************************************/ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
c66ac9db NB |
26 | #include <generated/utsrelease.h> |
27 | #include <linux/utsname.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/fs.h> | |
30 | #include <linux/namei.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/unistd.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/parser.h> | |
37 | #include <linux/syscalls.h> | |
38 | #include <linux/configfs.h> | |
e3d6f909 | 39 | #include <linux/spinlock.h> |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
c4795fb2 CH |
42 | #include <target/target_core_backend.h> |
43 | #include <target/target_core_fabric.h> | |
c66ac9db NB |
44 | #include <target/target_core_fabric_configfs.h> |
45 | #include <target/target_core_configfs.h> | |
46 | #include <target/configfs_macros.h> | |
47 | ||
e26d99ae | 48 | #include "target_core_internal.h" |
c66ac9db | 49 | #include "target_core_alua.h" |
c66ac9db NB |
50 | #include "target_core_pr.h" |
51 | #include "target_core_rd.h" | |
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", |
c66ac9db NB |
180 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); |
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, | |
187 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
188 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", | |
189 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); | |
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 | ||
272 | static struct configfs_subsystem *target_core_subsystem[] = { | |
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 | } | |
c66ac9db NB |
460 | /* |
461 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
462 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
463 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
464 | */ | |
6708bb27 AG |
465 | if (!tfo->fabric_make_wwn) { |
466 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
467 | return -EINVAL; |
468 | } | |
6708bb27 AG |
469 | if (!tfo->fabric_drop_wwn) { |
470 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
471 | return -EINVAL; |
472 | } | |
6708bb27 AG |
473 | if (!tfo->fabric_make_tpg) { |
474 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
475 | return -EINVAL; |
476 | } | |
6708bb27 AG |
477 | if (!tfo->fabric_drop_tpg) { |
478 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
479 | return -EINVAL; |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Called 2nd from fabric module with returned parameter of | |
487 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
488 | * | |
489 | * Upon a successful registration, the new fabric's struct config_item is | |
490 | * return. Also, a pointer to this struct is set in the passed | |
491 | * struct target_fabric_configfs. | |
492 | */ | |
493 | int target_fabric_configfs_register( | |
494 | struct target_fabric_configfs *tf) | |
495 | { | |
c66ac9db NB |
496 | int ret; |
497 | ||
6708bb27 AG |
498 | if (!tf) { |
499 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
500 | " pointer\n"); |
501 | return -EINVAL; | |
502 | } | |
6708bb27 AG |
503 | if (!tf->tf_subsys) { |
504 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
505 | " pointer\n"); |
506 | return -EINVAL; | |
507 | } | |
c66ac9db NB |
508 | ret = target_fabric_tf_ops_check(tf); |
509 | if (ret < 0) | |
510 | return ret; | |
511 | ||
6708bb27 | 512 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
513 | ">>>>>>>>>>\n"); |
514 | return 0; | |
515 | } | |
516 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
517 | ||
518 | void target_fabric_configfs_deregister( | |
519 | struct target_fabric_configfs *tf) | |
520 | { | |
c66ac9db NB |
521 | struct configfs_subsystem *su; |
522 | ||
6708bb27 AG |
523 | if (!tf) { |
524 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
525 | "configfs\n"); |
526 | return; | |
527 | } | |
528 | su = tf->tf_subsys; | |
6708bb27 AG |
529 | if (!su) { |
530 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
531 | " pointer\n"); |
532 | return; | |
533 | } | |
6708bb27 | 534 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
535 | ">>>>>>>>>>>>\n"); |
536 | mutex_lock(&g_tf_lock); | |
537 | if (atomic_read(&tf->tf_access_cnt)) { | |
538 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 539 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
540 | tf->tf_name); |
541 | BUG(); | |
542 | } | |
543 | list_del(&tf->tf_list); | |
544 | mutex_unlock(&g_tf_lock); | |
545 | ||
6708bb27 | 546 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
547 | " %s\n", tf->tf_name); |
548 | tf->tf_module = NULL; | |
549 | tf->tf_subsys = NULL; | |
550 | kfree(tf); | |
551 | ||
6708bb27 | 552 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 553 | ">>>>>\n"); |
c66ac9db NB |
554 | } |
555 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
556 | ||
557 | /*############################################################################## | |
558 | // Stop functions called by external Target Fabrics Modules | |
559 | //############################################################################*/ | |
560 | ||
561 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
562 | ||
563 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
564 | static ssize_t target_core_dev_show_attr_##_name( \ | |
565 | struct se_dev_attrib *da, \ | |
566 | char *page) \ | |
567 | { \ | |
0fd97ccf CH |
568 | return snprintf(page, PAGE_SIZE, "%u\n", \ |
569 | (u32)da->da_dev->dev_attrib._name); \ | |
c66ac9db NB |
570 | } |
571 | ||
572 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
573 | static ssize_t target_core_dev_store_attr_##_name( \ | |
574 | struct se_dev_attrib *da, \ | |
575 | const char *page, \ | |
576 | size_t count) \ | |
577 | { \ | |
c66ac9db NB |
578 | unsigned long val; \ |
579 | int ret; \ | |
580 | \ | |
c66ac9db NB |
581 | ret = strict_strtoul(page, 0, &val); \ |
582 | if (ret < 0) { \ | |
6708bb27 | 583 | pr_err("strict_strtoul() failed with" \ |
c66ac9db NB |
584 | " ret: %d\n", ret); \ |
585 | return -EINVAL; \ | |
586 | } \ | |
0fd97ccf | 587 | ret = se_dev_set_##_name(da->da_dev, (u32)val); \ |
c66ac9db NB |
588 | \ |
589 | return (!ret) ? count : -EINVAL; \ | |
590 | } | |
591 | ||
592 | #define DEF_DEV_ATTRIB(_name) \ | |
593 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
594 | DEF_DEV_ATTRIB_STORE(_name); | |
595 | ||
596 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
597 | DEF_DEV_ATTRIB_SHOW(_name); | |
598 | ||
599 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
600 | #define SE_DEV_ATTR(_name, _mode) \ | |
601 | static struct target_core_dev_attrib_attribute \ | |
602 | target_core_dev_attrib_##_name = \ | |
603 | __CONFIGFS_EATTR(_name, _mode, \ | |
604 | target_core_dev_show_attr_##_name, \ | |
605 | target_core_dev_store_attr_##_name); | |
606 | ||
607 | #define SE_DEV_ATTR_RO(_name); \ | |
608 | static struct target_core_dev_attrib_attribute \ | |
609 | target_core_dev_attrib_##_name = \ | |
610 | __CONFIGFS_EATTR_RO(_name, \ | |
611 | target_core_dev_show_attr_##_name); | |
612 | ||
613 | DEF_DEV_ATTRIB(emulate_dpo); | |
614 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
615 | ||
616 | DEF_DEV_ATTRIB(emulate_fua_write); | |
617 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
618 | ||
619 | DEF_DEV_ATTRIB(emulate_fua_read); | |
620 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
621 | ||
622 | DEF_DEV_ATTRIB(emulate_write_cache); | |
623 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
624 | ||
625 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
626 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
627 | ||
628 | DEF_DEV_ATTRIB(emulate_tas); | |
629 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
630 | ||
631 | DEF_DEV_ATTRIB(emulate_tpu); | |
632 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
633 | ||
634 | DEF_DEV_ATTRIB(emulate_tpws); | |
635 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
636 | ||
637 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
638 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
639 | ||
e22a7f07 RD |
640 | DEF_DEV_ATTRIB(is_nonrot); |
641 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); | |
642 | ||
5de619a3 NB |
643 | DEF_DEV_ATTRIB(emulate_rest_reord); |
644 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); | |
645 | ||
c66ac9db NB |
646 | DEF_DEV_ATTRIB_RO(hw_block_size); |
647 | SE_DEV_ATTR_RO(hw_block_size); | |
648 | ||
649 | DEF_DEV_ATTRIB(block_size); | |
650 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
651 | ||
652 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
653 | SE_DEV_ATTR_RO(hw_max_sectors); | |
654 | ||
015487b8 RD |
655 | DEF_DEV_ATTRIB(fabric_max_sectors); |
656 | SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); | |
657 | ||
c66ac9db NB |
658 | DEF_DEV_ATTRIB(optimal_sectors); |
659 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
660 | ||
661 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
662 | SE_DEV_ATTR_RO(hw_queue_depth); | |
663 | ||
664 | DEF_DEV_ATTRIB(queue_depth); | |
665 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
666 | ||
c66ac9db NB |
667 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
668 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
669 | ||
670 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
671 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
672 | ||
673 | DEF_DEV_ATTRIB(unmap_granularity); | |
674 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
675 | ||
676 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
677 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
678 | ||
679 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
680 | ||
681 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
682 | &target_core_dev_attrib_emulate_dpo.attr, | |
683 | &target_core_dev_attrib_emulate_fua_write.attr, | |
684 | &target_core_dev_attrib_emulate_fua_read.attr, | |
685 | &target_core_dev_attrib_emulate_write_cache.attr, | |
686 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
687 | &target_core_dev_attrib_emulate_tas.attr, | |
688 | &target_core_dev_attrib_emulate_tpu.attr, | |
689 | &target_core_dev_attrib_emulate_tpws.attr, | |
690 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
e22a7f07 | 691 | &target_core_dev_attrib_is_nonrot.attr, |
5de619a3 | 692 | &target_core_dev_attrib_emulate_rest_reord.attr, |
c66ac9db NB |
693 | &target_core_dev_attrib_hw_block_size.attr, |
694 | &target_core_dev_attrib_block_size.attr, | |
695 | &target_core_dev_attrib_hw_max_sectors.attr, | |
015487b8 | 696 | &target_core_dev_attrib_fabric_max_sectors.attr, |
c66ac9db NB |
697 | &target_core_dev_attrib_optimal_sectors.attr, |
698 | &target_core_dev_attrib_hw_queue_depth.attr, | |
699 | &target_core_dev_attrib_queue_depth.attr, | |
c66ac9db NB |
700 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
701 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
702 | &target_core_dev_attrib_unmap_granularity.attr, | |
703 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
704 | NULL, | |
705 | }; | |
706 | ||
707 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
708 | .show_attribute = target_core_dev_attrib_attr_show, | |
709 | .store_attribute = target_core_dev_attrib_attr_store, | |
710 | }; | |
711 | ||
712 | static struct config_item_type target_core_dev_attrib_cit = { | |
713 | .ct_item_ops = &target_core_dev_attrib_ops, | |
714 | .ct_attrs = target_core_dev_attrib_attrs, | |
715 | .ct_owner = THIS_MODULE, | |
716 | }; | |
717 | ||
718 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
719 | ||
720 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
721 | ||
722 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
723 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
724 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
725 | __CONFIGFS_EATTR(_name, _mode, \ | |
726 | target_core_dev_wwn_show_attr_##_name, \ | |
727 | target_core_dev_wwn_store_attr_##_name); | |
728 | ||
729 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
730 | do { \ | |
731 | static struct target_core_dev_wwn_attribute \ | |
732 | target_core_dev_wwn_##_name = \ | |
733 | __CONFIGFS_EATTR_RO(_name, \ | |
734 | target_core_dev_wwn_show_attr_##_name); \ | |
735 | } while (0); | |
736 | ||
737 | /* | |
738 | * VPD page 0x80 Unit serial | |
739 | */ | |
740 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
741 | struct t10_wwn *t10_wwn, | |
742 | char *page) | |
743 | { | |
c66ac9db NB |
744 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
745 | &t10_wwn->unit_serial[0]); | |
746 | } | |
747 | ||
748 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
749 | struct t10_wwn *t10_wwn, | |
750 | const char *page, | |
751 | size_t count) | |
752 | { | |
0fd97ccf | 753 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
754 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
755 | ||
756 | /* | |
757 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
758 | * from the struct scsi_device level firmware, do not allow | |
759 | * VPD Unit Serial to be emulated. | |
760 | * | |
761 | * Note this struct scsi_device could also be emulating VPD | |
762 | * information from its drivers/scsi LLD. But for now we assume | |
763 | * it is doing 'the right thing' wrt a world wide unique | |
764 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
765 | */ | |
0fd97ccf | 766 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 767 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
768 | " Unit Serial, ignoring request\n"); |
769 | return -EOPNOTSUPP; | |
770 | } | |
771 | ||
60d645a4 | 772 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 773 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
774 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
775 | return -EOVERFLOW; | |
776 | } | |
777 | /* | |
778 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
779 | * do exist, fail here as changing this information on the fly | |
780 | * (underneath the initiator side OS dependent multipath code) | |
781 | * could cause negative effects. | |
782 | */ | |
0fd97ccf CH |
783 | if (dev->export_count) { |
784 | pr_err("Unable to set VPD Unit Serial while" | |
785 | " active %d $FABRIC_MOD exports exist\n", | |
786 | dev->export_count); | |
787 | return -EINVAL; | |
c66ac9db | 788 | } |
0fd97ccf | 789 | |
c66ac9db NB |
790 | /* |
791 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
792 | * | |
793 | * Also, strip any newline added from the userspace | |
794 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
795 | */ | |
796 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
797 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 798 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 799 | "%s", strstrip(buf)); |
0fd97ccf | 800 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 801 | |
6708bb27 | 802 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 803 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
804 | |
805 | return count; | |
806 | } | |
807 | ||
808 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
809 | ||
810 | /* | |
811 | * VPD page 0x83 Protocol Identifier | |
812 | */ | |
813 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
814 | struct t10_wwn *t10_wwn, | |
815 | char *page) | |
816 | { | |
c66ac9db NB |
817 | struct t10_vpd *vpd; |
818 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
819 | ssize_t len = 0; | |
820 | ||
c66ac9db NB |
821 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
822 | ||
823 | spin_lock(&t10_wwn->t10_vpd_lock); | |
824 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 825 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
826 | continue; |
827 | ||
828 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
829 | ||
6708bb27 | 830 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
831 | break; |
832 | ||
833 | len += sprintf(page+len, "%s", buf); | |
834 | } | |
835 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
836 | ||
837 | return len; | |
838 | } | |
839 | ||
840 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
841 | struct t10_wwn *t10_wwn, | |
842 | const char *page, | |
843 | size_t count) | |
844 | { | |
845 | return -ENOSYS; | |
846 | } | |
847 | ||
848 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
849 | ||
850 | /* | |
851 | * Generic wrapper for dumping VPD identifiers by association. | |
852 | */ | |
853 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
854 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
855 | struct t10_wwn *t10_wwn, \ | |
856 | char *page) \ | |
857 | { \ | |
c66ac9db NB |
858 | struct t10_vpd *vpd; \ |
859 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
860 | ssize_t len = 0; \ | |
861 | \ | |
c66ac9db NB |
862 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
863 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
864 | if (vpd->association != _assoc) \ | |
865 | continue; \ | |
866 | \ | |
867 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
868 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 869 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
870 | break; \ |
871 | len += sprintf(page+len, "%s", buf); \ | |
872 | \ | |
873 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
874 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 875 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
876 | break; \ |
877 | len += sprintf(page+len, "%s", buf); \ | |
878 | \ | |
879 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
880 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 881 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
882 | break; \ |
883 | len += sprintf(page+len, "%s", buf); \ | |
884 | } \ | |
885 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
886 | \ | |
887 | return len; \ | |
888 | } | |
889 | ||
890 | /* | |
163cd5fa | 891 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
892 | */ |
893 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
894 | ||
895 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
896 | struct t10_wwn *t10_wwn, | |
897 | const char *page, | |
898 | size_t count) | |
899 | { | |
900 | return -ENOSYS; | |
901 | } | |
902 | ||
903 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
904 | ||
905 | /* | |
906 | * VPD page 0x83 Association: Target Port | |
907 | */ | |
908 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
909 | ||
910 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
911 | struct t10_wwn *t10_wwn, | |
912 | const char *page, | |
913 | size_t count) | |
914 | { | |
915 | return -ENOSYS; | |
916 | } | |
917 | ||
918 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
919 | ||
920 | /* | |
921 | * VPD page 0x83 Association: SCSI Target Device | |
922 | */ | |
923 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
924 | ||
925 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
926 | struct t10_wwn *t10_wwn, | |
927 | const char *page, | |
928 | size_t count) | |
929 | { | |
930 | return -ENOSYS; | |
931 | } | |
932 | ||
933 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
934 | ||
935 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
936 | ||
937 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
938 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
939 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
940 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
941 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
942 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
943 | NULL, | |
944 | }; | |
945 | ||
946 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
947 | .show_attribute = target_core_dev_wwn_attr_show, | |
948 | .store_attribute = target_core_dev_wwn_attr_store, | |
949 | }; | |
950 | ||
951 | static struct config_item_type target_core_dev_wwn_cit = { | |
952 | .ct_item_ops = &target_core_dev_wwn_ops, | |
953 | .ct_attrs = target_core_dev_wwn_attrs, | |
954 | .ct_owner = THIS_MODULE, | |
955 | }; | |
956 | ||
957 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
958 | ||
959 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
960 | ||
0fd97ccf | 961 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
c66ac9db NB |
962 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
963 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
964 | __CONFIGFS_EATTR(_name, _mode, \ | |
965 | target_core_dev_pr_show_attr_##_name, \ | |
966 | target_core_dev_pr_store_attr_##_name); | |
967 | ||
968 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
969 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
970 | __CONFIGFS_EATTR_RO(_name, \ | |
971 | target_core_dev_pr_show_attr_##_name); | |
972 | ||
d977f437 CH |
973 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
974 | char *page) | |
c66ac9db NB |
975 | { |
976 | struct se_node_acl *se_nacl; | |
977 | struct t10_pr_registration *pr_reg; | |
978 | char i_buf[PR_REG_ISID_ID_LEN]; | |
979 | int prf_isid; | |
980 | ||
981 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
982 | ||
c66ac9db | 983 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
984 | if (!pr_reg) |
985 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
986 | ||
c66ac9db NB |
987 | se_nacl = pr_reg->pr_reg_nacl; |
988 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
989 | PR_REG_ISID_ID_LEN); | |
990 | ||
d977f437 | 991 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 992 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db | 993 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); |
c66ac9db NB |
994 | } |
995 | ||
d977f437 CH |
996 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
997 | char *page) | |
c66ac9db NB |
998 | { |
999 | struct se_node_acl *se_nacl; | |
d977f437 | 1000 | ssize_t len; |
c66ac9db | 1001 | |
c66ac9db | 1002 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
1003 | if (se_nacl) { |
1004 | len = sprintf(page, | |
1005 | "SPC-2 Reservation: %s Initiator: %s\n", | |
1006 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
1007 | se_nacl->initiatorname); | |
1008 | } else { | |
1009 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1010 | } |
d977f437 | 1011 | return len; |
c66ac9db NB |
1012 | } |
1013 | ||
0fd97ccf CH |
1014 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
1015 | char *page) | |
c66ac9db | 1016 | { |
d977f437 | 1017 | int ret; |
c66ac9db | 1018 | |
d977f437 CH |
1019 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1020 | return sprintf(page, "Passthrough\n"); | |
c66ac9db | 1021 | |
d977f437 CH |
1022 | spin_lock(&dev->dev_reservation_lock); |
1023 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1024 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1025 | else | |
1026 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1027 | spin_unlock(&dev->dev_reservation_lock); | |
1028 | return ret; | |
c66ac9db NB |
1029 | } |
1030 | ||
1031 | SE_DEV_PR_ATTR_RO(res_holder); | |
1032 | ||
c66ac9db | 1033 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
0fd97ccf | 1034 | struct se_device *dev, char *page) |
c66ac9db | 1035 | { |
c66ac9db NB |
1036 | ssize_t len = 0; |
1037 | ||
c66ac9db | 1038 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1039 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1040 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1041 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1042 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1043 | " Ports registration\n"); | |
d977f437 | 1044 | } else { |
c66ac9db NB |
1045 | len = sprintf(page, "SPC-3 Reservation: Single" |
1046 | " Target Port registration\n"); | |
d977f437 | 1047 | } |
c66ac9db | 1048 | |
d977f437 | 1049 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1050 | return len; |
1051 | } | |
1052 | ||
1053 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1054 | ||
c66ac9db | 1055 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
0fd97ccf | 1056 | struct se_device *dev, char *page) |
c66ac9db | 1057 | { |
0fd97ccf | 1058 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
c66ac9db NB |
1059 | } |
1060 | ||
1061 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1062 | ||
1063 | /* | |
1064 | * res_pr_holder_tg_port | |
1065 | */ | |
1066 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
0fd97ccf | 1067 | struct se_device *dev, char *page) |
c66ac9db | 1068 | { |
c66ac9db NB |
1069 | struct se_node_acl *se_nacl; |
1070 | struct se_lun *lun; | |
1071 | struct se_portal_group *se_tpg; | |
1072 | struct t10_pr_registration *pr_reg; | |
1073 | struct target_core_fabric_ops *tfo; | |
1074 | ssize_t len = 0; | |
1075 | ||
c66ac9db NB |
1076 | spin_lock(&dev->dev_reservation_lock); |
1077 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1078 | if (!pr_reg) { |
c66ac9db | 1079 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1080 | goto out_unlock; |
c66ac9db | 1081 | } |
d977f437 | 1082 | |
c66ac9db NB |
1083 | se_nacl = pr_reg->pr_reg_nacl; |
1084 | se_tpg = se_nacl->se_tpg; | |
1085 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1086 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1087 | |
1088 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1089 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1090 | tfo->tpg_get_wwn(se_tpg)); | |
1091 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1092 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
c66ac9db NB |
1093 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, |
1094 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1095 | tfo->get_fabric_name(), lun->unpacked_lun); | |
c66ac9db | 1096 | |
d977f437 CH |
1097 | out_unlock: |
1098 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1099 | return len; |
1100 | } | |
1101 | ||
1102 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1103 | ||
c66ac9db | 1104 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
0fd97ccf | 1105 | struct se_device *dev, char *page) |
c66ac9db NB |
1106 | { |
1107 | struct target_core_fabric_ops *tfo; | |
1108 | struct t10_pr_registration *pr_reg; | |
1109 | unsigned char buf[384]; | |
1110 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1111 | ssize_t len = 0; | |
1112 | int reg_count = 0, prf_isid; | |
1113 | ||
c66ac9db NB |
1114 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1115 | ||
0fd97ccf CH |
1116 | spin_lock(&dev->t10_pr.registration_lock); |
1117 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1118 | pr_reg_list) { |
1119 | ||
1120 | memset(buf, 0, 384); | |
1121 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1122 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1123 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1124 | PR_REG_ISID_ID_LEN); | |
1125 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1126 | tfo->get_fabric_name(), | |
1127 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1128 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1129 | pr_reg->pr_res_generation); | |
1130 | ||
6708bb27 | 1131 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1132 | break; |
1133 | ||
1134 | len += sprintf(page+len, "%s", buf); | |
1135 | reg_count++; | |
1136 | } | |
0fd97ccf | 1137 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1138 | |
6708bb27 | 1139 | if (!reg_count) |
c66ac9db NB |
1140 | len += sprintf(page+len, "None\n"); |
1141 | ||
1142 | return len; | |
1143 | } | |
1144 | ||
1145 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1146 | ||
c66ac9db | 1147 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
0fd97ccf | 1148 | struct se_device *dev, char *page) |
c66ac9db | 1149 | { |
c66ac9db NB |
1150 | struct t10_pr_registration *pr_reg; |
1151 | ssize_t len = 0; | |
1152 | ||
c66ac9db NB |
1153 | spin_lock(&dev->dev_reservation_lock); |
1154 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1155 | if (pr_reg) { |
1156 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1157 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1158 | } else { | |
c66ac9db | 1159 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1160 | } |
c66ac9db | 1161 | |
d977f437 | 1162 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1163 | return len; |
1164 | } | |
1165 | ||
1166 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1167 | ||
c66ac9db | 1168 | static ssize_t target_core_dev_pr_show_attr_res_type( |
0fd97ccf | 1169 | struct se_device *dev, char *page) |
c66ac9db | 1170 | { |
d977f437 CH |
1171 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1172 | return sprintf(page, "SPC_PASSTHROUGH\n"); | |
1173 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1174 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1175 | else | |
1176 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1177 | } |
1178 | ||
1179 | SE_DEV_PR_ATTR_RO(res_type); | |
1180 | ||
c66ac9db | 1181 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
0fd97ccf | 1182 | struct se_device *dev, char *page) |
c66ac9db | 1183 | { |
d977f437 | 1184 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1185 | return 0; |
1186 | ||
1187 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1188 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1189 | } |
1190 | ||
1191 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1192 | ||
1193 | /* | |
1194 | * res_aptpl_metadata | |
1195 | */ | |
1196 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
0fd97ccf | 1197 | struct se_device *dev, char *page) |
c66ac9db | 1198 | { |
d977f437 | 1199 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1200 | return 0; |
1201 | ||
1202 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1203 | } | |
1204 | ||
1205 | enum { | |
1206 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1207 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1208 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1209 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1210 | }; | |
1211 | ||
1212 | static match_table_t tokens = { | |
1213 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1214 | {Opt_initiator_node, "initiator_node=%s"}, | |
1215 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1216 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1217 | {Opt_res_holder, "res_holder=%d"}, | |
1218 | {Opt_res_type, "res_type=%d"}, | |
1219 | {Opt_res_scope, "res_scope=%d"}, | |
1220 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1221 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1222 | {Opt_target_fabric, "target_fabric=%s"}, | |
1223 | {Opt_target_node, "target_node=%s"}, | |
1224 | {Opt_tpgt, "tpgt=%d"}, | |
1225 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1226 | {Opt_target_lun, "target_lun=%d"}, | |
1227 | {Opt_err, NULL} | |
1228 | }; | |
1229 | ||
1230 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
0fd97ccf | 1231 | struct se_device *dev, |
c66ac9db NB |
1232 | const char *page, |
1233 | size_t count) | |
1234 | { | |
6d180253 JJ |
1235 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1236 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1237 | char *orig, *ptr, *arg_p, *opts; |
1238 | substring_t args[MAX_OPT_ARGS]; | |
1239 | unsigned long long tmp_ll; | |
1240 | u64 sa_res_key = 0; | |
1241 | u32 mapped_lun = 0, target_lun = 0; | |
1242 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1243 | u16 port_rpti = 0, tpgt = 0; | |
1244 | u8 type = 0, scope; | |
1245 | ||
d977f437 CH |
1246 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1247 | return 0; | |
1248 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
c66ac9db NB |
1249 | return 0; |
1250 | ||
0fd97ccf | 1251 | if (dev->export_count) { |
6708bb27 | 1252 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1253 | " active fabric exports exist\n"); |
1254 | return -EINVAL; | |
1255 | } | |
1256 | ||
1257 | opts = kstrdup(page, GFP_KERNEL); | |
1258 | if (!opts) | |
1259 | return -ENOMEM; | |
1260 | ||
1261 | orig = opts; | |
90c161b6 | 1262 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1263 | if (!*ptr) |
1264 | continue; | |
1265 | ||
1266 | token = match_token(ptr, tokens, args); | |
1267 | switch (token) { | |
1268 | case Opt_initiator_fabric: | |
1269 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1270 | if (!i_fabric) { |
1271 | ret = -ENOMEM; | |
1272 | goto out; | |
1273 | } | |
c66ac9db NB |
1274 | break; |
1275 | case Opt_initiator_node: | |
1276 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1277 | if (!i_port) { |
1278 | ret = -ENOMEM; | |
1279 | goto out; | |
1280 | } | |
60d645a4 | 1281 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1282 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1283 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1284 | PR_APTPL_MAX_IPORT_LEN); | |
1285 | ret = -EINVAL; | |
1286 | break; | |
1287 | } | |
1288 | break; | |
1289 | case Opt_initiator_sid: | |
1290 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1291 | if (!isid) { |
1292 | ret = -ENOMEM; | |
1293 | goto out; | |
1294 | } | |
60d645a4 | 1295 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1296 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1297 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1298 | PR_REG_ISID_LEN); | |
1299 | ret = -EINVAL; | |
1300 | break; | |
1301 | } | |
1302 | break; | |
1303 | case Opt_sa_res_key: | |
1304 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1305 | if (!arg_p) { |
1306 | ret = -ENOMEM; | |
1307 | goto out; | |
1308 | } | |
c66ac9db NB |
1309 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
1310 | if (ret < 0) { | |
6708bb27 | 1311 | pr_err("strict_strtoull() failed for" |
c66ac9db NB |
1312 | " sa_res_key=\n"); |
1313 | goto out; | |
1314 | } | |
1315 | sa_res_key = (u64)tmp_ll; | |
1316 | break; | |
1317 | /* | |
1318 | * PR APTPL Metadata for Reservation | |
1319 | */ | |
1320 | case Opt_res_holder: | |
1321 | match_int(args, &arg); | |
1322 | res_holder = arg; | |
1323 | break; | |
1324 | case Opt_res_type: | |
1325 | match_int(args, &arg); | |
1326 | type = (u8)arg; | |
1327 | break; | |
1328 | case Opt_res_scope: | |
1329 | match_int(args, &arg); | |
1330 | scope = (u8)arg; | |
1331 | break; | |
1332 | case Opt_res_all_tg_pt: | |
1333 | match_int(args, &arg); | |
1334 | all_tg_pt = (int)arg; | |
1335 | break; | |
1336 | case Opt_mapped_lun: | |
1337 | match_int(args, &arg); | |
1338 | mapped_lun = (u32)arg; | |
1339 | break; | |
1340 | /* | |
1341 | * PR APTPL Metadata for Target Port | |
1342 | */ | |
1343 | case Opt_target_fabric: | |
1344 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1345 | if (!t_fabric) { |
1346 | ret = -ENOMEM; | |
1347 | goto out; | |
1348 | } | |
c66ac9db NB |
1349 | break; |
1350 | case Opt_target_node: | |
1351 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1352 | if (!t_port) { |
1353 | ret = -ENOMEM; | |
1354 | goto out; | |
1355 | } | |
60d645a4 | 1356 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1357 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1358 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1359 | PR_APTPL_MAX_TPORT_LEN); | |
1360 | ret = -EINVAL; | |
1361 | break; | |
1362 | } | |
1363 | break; | |
1364 | case Opt_tpgt: | |
1365 | match_int(args, &arg); | |
1366 | tpgt = (u16)arg; | |
1367 | break; | |
1368 | case Opt_port_rtpi: | |
1369 | match_int(args, &arg); | |
1370 | port_rpti = (u16)arg; | |
1371 | break; | |
1372 | case Opt_target_lun: | |
1373 | match_int(args, &arg); | |
1374 | target_lun = (u32)arg; | |
1375 | break; | |
1376 | default: | |
1377 | break; | |
1378 | } | |
1379 | } | |
1380 | ||
6708bb27 AG |
1381 | if (!i_port || !t_port || !sa_res_key) { |
1382 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1383 | ret = -EINVAL; |
1384 | goto out; | |
1385 | } | |
1386 | ||
1387 | if (res_holder && !(type)) { | |
6708bb27 | 1388 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1389 | " holder\n", type); |
1390 | ret = -EINVAL; | |
1391 | goto out; | |
1392 | } | |
1393 | ||
0fd97ccf | 1394 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1395 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1396 | res_holder, all_tg_pt, type); | |
1397 | out: | |
6d180253 JJ |
1398 | kfree(i_fabric); |
1399 | kfree(i_port); | |
1400 | kfree(isid); | |
1401 | kfree(t_fabric); | |
1402 | kfree(t_port); | |
c66ac9db NB |
1403 | kfree(orig); |
1404 | return (ret == 0) ? count : ret; | |
1405 | } | |
1406 | ||
1407 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1408 | ||
0fd97ccf | 1409 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
c66ac9db NB |
1410 | |
1411 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1412 | &target_core_dev_pr_res_holder.attr, | |
1413 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1414 | &target_core_dev_pr_res_pr_generation.attr, | |
1415 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1416 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1417 | &target_core_dev_pr_res_pr_type.attr, | |
1418 | &target_core_dev_pr_res_type.attr, | |
1419 | &target_core_dev_pr_res_aptpl_active.attr, | |
1420 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1421 | NULL, | |
1422 | }; | |
1423 | ||
1424 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1425 | .show_attribute = target_core_dev_pr_attr_show, | |
1426 | .store_attribute = target_core_dev_pr_attr_store, | |
1427 | }; | |
1428 | ||
1429 | static struct config_item_type target_core_dev_pr_cit = { | |
1430 | .ct_item_ops = &target_core_dev_pr_ops, | |
1431 | .ct_attrs = target_core_dev_pr_attrs, | |
1432 | .ct_owner = THIS_MODULE, | |
1433 | }; | |
1434 | ||
1435 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1436 | ||
1437 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1438 | ||
1439 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1440 | { | |
0fd97ccf CH |
1441 | struct se_device *dev = p; |
1442 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db NB |
1443 | int bl = 0; |
1444 | ssize_t read_bytes = 0; | |
1445 | ||
0fd97ccf | 1446 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1447 | read_bytes += bl; |
0fd97ccf | 1448 | read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); |
c66ac9db NB |
1449 | return read_bytes; |
1450 | } | |
1451 | ||
1452 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1453 | .attr = { .ca_owner = THIS_MODULE, | |
1454 | .ca_name = "info", | |
1455 | .ca_mode = S_IRUGO }, | |
1456 | .show = target_core_show_dev_info, | |
1457 | .store = NULL, | |
1458 | }; | |
1459 | ||
1460 | static ssize_t target_core_store_dev_control( | |
1461 | void *p, | |
1462 | const char *page, | |
1463 | size_t count) | |
1464 | { | |
0fd97ccf CH |
1465 | struct se_device *dev = p; |
1466 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db | 1467 | |
0fd97ccf | 1468 | return t->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1469 | } |
1470 | ||
1471 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1472 | .attr = { .ca_owner = THIS_MODULE, | |
1473 | .ca_name = "control", | |
1474 | .ca_mode = S_IWUSR }, | |
1475 | .show = NULL, | |
1476 | .store = target_core_store_dev_control, | |
1477 | }; | |
1478 | ||
1479 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1480 | { | |
0fd97ccf | 1481 | struct se_device *dev = p; |
c66ac9db | 1482 | |
0fd97ccf | 1483 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1484 | return 0; |
1485 | ||
0fd97ccf | 1486 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1487 | } |
1488 | ||
1489 | static ssize_t target_core_store_dev_alias( | |
1490 | void *p, | |
1491 | const char *page, | |
1492 | size_t count) | |
1493 | { | |
0fd97ccf CH |
1494 | struct se_device *dev = p; |
1495 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1496 | ssize_t read_bytes; |
1497 | ||
1498 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1499 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1500 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1501 | SE_DEV_ALIAS_LEN-1); | |
1502 | return -EINVAL; | |
1503 | } | |
1504 | ||
0fd97ccf | 1505 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1506 | if (!read_bytes) |
1507 | return -EINVAL; | |
0fd97ccf CH |
1508 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1509 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1510 | |
0fd97ccf | 1511 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1512 | |
6708bb27 | 1513 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1514 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1515 | config_item_name(&dev->dev_group.cg_item), |
1516 | dev->dev_alias); | |
c66ac9db NB |
1517 | |
1518 | return read_bytes; | |
1519 | } | |
1520 | ||
1521 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1522 | .attr = { .ca_owner = THIS_MODULE, | |
1523 | .ca_name = "alias", | |
1524 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1525 | .show = target_core_show_dev_alias, | |
1526 | .store = target_core_store_dev_alias, | |
1527 | }; | |
1528 | ||
1529 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1530 | { | |
0fd97ccf | 1531 | struct se_device *dev = p; |
c66ac9db | 1532 | |
0fd97ccf | 1533 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1534 | return 0; |
1535 | ||
0fd97ccf | 1536 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1537 | } |
1538 | ||
1539 | static ssize_t target_core_store_dev_udev_path( | |
1540 | void *p, | |
1541 | const char *page, | |
1542 | size_t count) | |
1543 | { | |
0fd97ccf CH |
1544 | struct se_device *dev = p; |
1545 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1546 | ssize_t read_bytes; |
1547 | ||
1548 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1549 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1550 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1551 | SE_UDEV_PATH_LEN-1); | |
1552 | return -EINVAL; | |
1553 | } | |
1554 | ||
0fd97ccf | 1555 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1556 | "%s", page); |
3011684c DC |
1557 | if (!read_bytes) |
1558 | return -EINVAL; | |
0fd97ccf CH |
1559 | if (dev->udev_path[read_bytes - 1] == '\n') |
1560 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1561 | |
0fd97ccf | 1562 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1563 | |
6708bb27 | 1564 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1565 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1566 | config_item_name(&dev->dev_group.cg_item), |
1567 | dev->udev_path); | |
c66ac9db NB |
1568 | |
1569 | return read_bytes; | |
1570 | } | |
1571 | ||
1572 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1573 | .attr = { .ca_owner = THIS_MODULE, | |
1574 | .ca_name = "udev_path", | |
1575 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1576 | .show = target_core_show_dev_udev_path, | |
1577 | .store = target_core_store_dev_udev_path, | |
1578 | }; | |
1579 | ||
1580 | static ssize_t target_core_store_dev_enable( | |
1581 | void *p, | |
1582 | const char *page, | |
1583 | size_t count) | |
1584 | { | |
0fd97ccf | 1585 | struct se_device *dev = p; |
c66ac9db | 1586 | char *ptr; |
0fd97ccf | 1587 | int ret; |
c66ac9db NB |
1588 | |
1589 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1590 | if (!ptr) { |
1591 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1592 | " is \"1\"\n"); |
1593 | return -EINVAL; | |
1594 | } | |
c66ac9db | 1595 | |
0fd97ccf CH |
1596 | ret = target_configure_device(dev); |
1597 | if (ret) | |
1598 | return ret; | |
c66ac9db NB |
1599 | return count; |
1600 | } | |
1601 | ||
1602 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1603 | .attr = { .ca_owner = THIS_MODULE, | |
1604 | .ca_name = "enable", | |
1605 | .ca_mode = S_IWUSR }, | |
1606 | .show = NULL, | |
1607 | .store = target_core_store_dev_enable, | |
1608 | }; | |
1609 | ||
1610 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1611 | { | |
0fd97ccf | 1612 | struct se_device *dev = p; |
c66ac9db NB |
1613 | struct config_item *lu_ci; |
1614 | struct t10_alua_lu_gp *lu_gp; | |
1615 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1616 | ssize_t len = 0; | |
1617 | ||
0fd97ccf | 1618 | if (dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) |
c66ac9db NB |
1619 | return len; |
1620 | ||
1621 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 AG |
1622 | if (!lu_gp_mem) { |
1623 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" | |
c66ac9db NB |
1624 | " pointer\n"); |
1625 | return -EINVAL; | |
1626 | } | |
1627 | ||
1628 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1629 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1630 | if (lu_gp) { |
c66ac9db NB |
1631 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1632 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1633 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1634 | } | |
1635 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1636 | ||
1637 | return len; | |
1638 | } | |
1639 | ||
1640 | static ssize_t target_core_store_alua_lu_gp( | |
1641 | void *p, | |
1642 | const char *page, | |
1643 | size_t count) | |
1644 | { | |
0fd97ccf CH |
1645 | struct se_device *dev = p; |
1646 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1647 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
1648 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1649 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1650 | int move = 0; | |
1651 | ||
0fd97ccf | 1652 | if (dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { |
6708bb27 | 1653 | pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n", |
c66ac9db | 1654 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf | 1655 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
1656 | return -EINVAL; |
1657 | } | |
1658 | if (count > LU_GROUP_NAME_BUF) { | |
6708bb27 | 1659 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1660 | return -EINVAL; |
1661 | } | |
1662 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1663 | memcpy(buf, page, count); | |
1664 | /* | |
1665 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1666 | * making a new group association. | |
1667 | */ | |
1668 | if (strcmp(strstrip(buf), "NULL")) { | |
1669 | /* | |
1670 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1671 | * struct t10_alua_lu_gp. This reference is released with | |
1672 | * core_alua_get_lu_gp_by_name below(). | |
1673 | */ | |
1674 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1675 | if (!lu_gp_new) |
c66ac9db NB |
1676 | return -ENODEV; |
1677 | } | |
1678 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 | 1679 | if (!lu_gp_mem) { |
c66ac9db NB |
1680 | if (lu_gp_new) |
1681 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
6708bb27 | 1682 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" |
c66ac9db NB |
1683 | " pointer\n"); |
1684 | return -EINVAL; | |
1685 | } | |
1686 | ||
1687 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1688 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1689 | if (lu_gp) { |
c66ac9db NB |
1690 | /* |
1691 | * Clearing an existing lu_gp association, and replacing | |
1692 | * with NULL | |
1693 | */ | |
6708bb27 AG |
1694 | if (!lu_gp_new) { |
1695 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1696 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1697 | " %hu\n", | |
1698 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1699 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1700 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
1701 | lu_gp->lu_gp_id); | |
1702 | ||
1703 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1704 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1705 | ||
1706 | return count; | |
1707 | } | |
1708 | /* | |
1709 | * Removing existing association of lu_gp_mem with lu_gp | |
1710 | */ | |
1711 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1712 | move = 1; | |
1713 | } | |
1714 | /* | |
1715 | * Associate lu_gp_mem with lu_gp_new. | |
1716 | */ | |
1717 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1718 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1719 | ||
6708bb27 | 1720 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1721 | " core/alua/lu_gps/%s, ID: %hu\n", |
1722 | (move) ? "Moving" : "Adding", | |
1723 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1724 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1725 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
1726 | lu_gp_new->lu_gp_id); | |
1727 | ||
1728 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1729 | return count; | |
1730 | } | |
1731 | ||
1732 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1733 | .attr = { .ca_owner = THIS_MODULE, | |
1734 | .ca_name = "alua_lu_gp", | |
1735 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1736 | .show = target_core_show_alua_lu_gp, | |
1737 | .store = target_core_store_alua_lu_gp, | |
1738 | }; | |
1739 | ||
1740 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1741 | &target_core_attr_dev_info.attr, | |
1742 | &target_core_attr_dev_control.attr, | |
1743 | &target_core_attr_dev_alias.attr, | |
1744 | &target_core_attr_dev_udev_path.attr, | |
1745 | &target_core_attr_dev_enable.attr, | |
1746 | &target_core_attr_dev_alua_lu_gp.attr, | |
1747 | NULL, | |
1748 | }; | |
1749 | ||
1750 | static void target_core_dev_release(struct config_item *item) | |
1751 | { | |
0fd97ccf CH |
1752 | struct config_group *dev_cg = to_config_group(item); |
1753 | struct se_device *dev = | |
1754 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 1755 | |
c66ac9db | 1756 | kfree(dev_cg->default_groups); |
0fd97ccf | 1757 | target_free_device(dev); |
c66ac9db NB |
1758 | } |
1759 | ||
1760 | static ssize_t target_core_dev_show(struct config_item *item, | |
1761 | struct configfs_attribute *attr, | |
1762 | char *page) | |
1763 | { | |
0fd97ccf CH |
1764 | struct config_group *dev_cg = to_config_group(item); |
1765 | struct se_device *dev = | |
1766 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1767 | struct target_core_configfs_attribute *tc_attr = container_of( |
1768 | attr, struct target_core_configfs_attribute, attr); | |
1769 | ||
6708bb27 | 1770 | if (!tc_attr->show) |
c66ac9db NB |
1771 | return -EINVAL; |
1772 | ||
0fd97ccf | 1773 | return tc_attr->show(dev, page); |
c66ac9db NB |
1774 | } |
1775 | ||
1776 | static ssize_t target_core_dev_store(struct config_item *item, | |
1777 | struct configfs_attribute *attr, | |
1778 | const char *page, size_t count) | |
1779 | { | |
0fd97ccf CH |
1780 | struct config_group *dev_cg = to_config_group(item); |
1781 | struct se_device *dev = | |
1782 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1783 | struct target_core_configfs_attribute *tc_attr = container_of( |
1784 | attr, struct target_core_configfs_attribute, attr); | |
1785 | ||
6708bb27 | 1786 | if (!tc_attr->store) |
c66ac9db NB |
1787 | return -EINVAL; |
1788 | ||
0fd97ccf | 1789 | return tc_attr->store(dev, page, count); |
c66ac9db NB |
1790 | } |
1791 | ||
1792 | static struct configfs_item_operations target_core_dev_item_ops = { | |
1793 | .release = target_core_dev_release, | |
1794 | .show_attribute = target_core_dev_show, | |
1795 | .store_attribute = target_core_dev_store, | |
1796 | }; | |
1797 | ||
1798 | static struct config_item_type target_core_dev_cit = { | |
1799 | .ct_item_ops = &target_core_dev_item_ops, | |
1800 | .ct_attrs = lio_core_dev_attrs, | |
1801 | .ct_owner = THIS_MODULE, | |
1802 | }; | |
1803 | ||
1804 | /* End functions for struct config_item_type target_core_dev_cit */ | |
1805 | ||
1806 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1807 | ||
1808 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
1809 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
1810 | static struct target_core_alua_lu_gp_attribute \ | |
1811 | target_core_alua_lu_gp_##_name = \ | |
1812 | __CONFIGFS_EATTR(_name, _mode, \ | |
1813 | target_core_alua_lu_gp_show_attr_##_name, \ | |
1814 | target_core_alua_lu_gp_store_attr_##_name); | |
1815 | ||
1816 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
1817 | static struct target_core_alua_lu_gp_attribute \ | |
1818 | target_core_alua_lu_gp_##_name = \ | |
1819 | __CONFIGFS_EATTR_RO(_name, \ | |
1820 | target_core_alua_lu_gp_show_attr_##_name); | |
1821 | ||
1822 | /* | |
1823 | * lu_gp_id | |
1824 | */ | |
1825 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
1826 | struct t10_alua_lu_gp *lu_gp, | |
1827 | char *page) | |
1828 | { | |
6708bb27 | 1829 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
1830 | return 0; |
1831 | ||
1832 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
1833 | } | |
1834 | ||
1835 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
1836 | struct t10_alua_lu_gp *lu_gp, | |
1837 | const char *page, | |
1838 | size_t count) | |
1839 | { | |
1840 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1841 | unsigned long lu_gp_id; | |
1842 | int ret; | |
1843 | ||
1844 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
1845 | if (ret < 0) { | |
6708bb27 | 1846 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
1847 | " lu_gp_id\n", ret); |
1848 | return -EINVAL; | |
1849 | } | |
1850 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 1851 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
1852 | " 0x0000ffff\n", lu_gp_id); |
1853 | return -EINVAL; | |
1854 | } | |
1855 | ||
1856 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
1857 | if (ret < 0) | |
1858 | return -EINVAL; | |
1859 | ||
6708bb27 | 1860 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
1861 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
1862 | config_item_name(&alua_lu_gp_cg->cg_item), | |
1863 | lu_gp->lu_gp_id); | |
1864 | ||
1865 | return count; | |
1866 | } | |
1867 | ||
1868 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
1869 | ||
1870 | /* | |
1871 | * members | |
1872 | */ | |
1873 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
1874 | struct t10_alua_lu_gp *lu_gp, | |
1875 | char *page) | |
1876 | { | |
1877 | struct se_device *dev; | |
1878 | struct se_hba *hba; | |
c66ac9db NB |
1879 | struct t10_alua_lu_gp_member *lu_gp_mem; |
1880 | ssize_t len = 0, cur_len; | |
1881 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1882 | ||
1883 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1884 | ||
1885 | spin_lock(&lu_gp->lu_gp_lock); | |
1886 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
1887 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 1888 | hba = dev->se_hba; |
c66ac9db NB |
1889 | |
1890 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
1891 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1892 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
1893 | cur_len++; /* Extra byte for NULL terminator */ |
1894 | ||
1895 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 1896 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
1897 | "_members buffer\n"); |
1898 | break; | |
1899 | } | |
1900 | memcpy(page+len, buf, cur_len); | |
1901 | len += cur_len; | |
1902 | } | |
1903 | spin_unlock(&lu_gp->lu_gp_lock); | |
1904 | ||
1905 | return len; | |
1906 | } | |
1907 | ||
1908 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
1909 | ||
1910 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
1911 | ||
1912 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
1913 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
1914 | &target_core_alua_lu_gp_members.attr, | |
1915 | NULL, | |
1916 | }; | |
1917 | ||
1f6fe7cb NB |
1918 | static void target_core_alua_lu_gp_release(struct config_item *item) |
1919 | { | |
1920 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1921 | struct t10_alua_lu_gp, lu_gp_group); | |
1922 | ||
1923 | core_alua_free_lu_gp(lu_gp); | |
1924 | } | |
1925 | ||
c66ac9db | 1926 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 1927 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
1928 | .show_attribute = target_core_alua_lu_gp_attr_show, |
1929 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
1930 | }; | |
1931 | ||
1932 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
1933 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
1934 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
1935 | .ct_owner = THIS_MODULE, | |
1936 | }; | |
1937 | ||
1938 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1939 | ||
1940 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
1941 | ||
1942 | static struct config_group *target_core_alua_create_lu_gp( | |
1943 | struct config_group *group, | |
1944 | const char *name) | |
1945 | { | |
1946 | struct t10_alua_lu_gp *lu_gp; | |
1947 | struct config_group *alua_lu_gp_cg = NULL; | |
1948 | struct config_item *alua_lu_gp_ci = NULL; | |
1949 | ||
1950 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
1951 | if (IS_ERR(lu_gp)) | |
1952 | return NULL; | |
1953 | ||
1954 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1955 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
1956 | ||
1957 | config_group_init_type_name(alua_lu_gp_cg, name, | |
1958 | &target_core_alua_lu_gp_cit); | |
1959 | ||
6708bb27 | 1960 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
1961 | " Group: core/alua/lu_gps/%s\n", |
1962 | config_item_name(alua_lu_gp_ci)); | |
1963 | ||
1964 | return alua_lu_gp_cg; | |
1965 | ||
1966 | } | |
1967 | ||
1968 | static void target_core_alua_drop_lu_gp( | |
1969 | struct config_group *group, | |
1970 | struct config_item *item) | |
1971 | { | |
1972 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1973 | struct t10_alua_lu_gp, lu_gp_group); | |
1974 | ||
6708bb27 | 1975 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
1976 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
1977 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
1978 | /* |
1979 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
1980 | * -> target_core_alua_lu_gp_release() | |
1981 | */ | |
c66ac9db | 1982 | config_item_put(item); |
c66ac9db NB |
1983 | } |
1984 | ||
1985 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
1986 | .make_group = &target_core_alua_create_lu_gp, | |
1987 | .drop_item = &target_core_alua_drop_lu_gp, | |
1988 | }; | |
1989 | ||
1990 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
1991 | .ct_item_ops = NULL, | |
1992 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
1993 | .ct_owner = THIS_MODULE, | |
1994 | }; | |
1995 | ||
1996 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
1997 | ||
1998 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
1999 | ||
2000 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2001 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2002 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2003 | target_core_alua_tg_pt_gp_##_name = \ | |
2004 | __CONFIGFS_EATTR(_name, _mode, \ | |
2005 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2006 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2007 | ||
2008 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2009 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2010 | target_core_alua_tg_pt_gp_##_name = \ | |
2011 | __CONFIGFS_EATTR_RO(_name, \ | |
2012 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2013 | ||
2014 | /* | |
2015 | * alua_access_state | |
2016 | */ | |
2017 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2018 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2019 | char *page) | |
2020 | { | |
2021 | return sprintf(page, "%d\n", | |
2022 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2023 | } | |
2024 | ||
2025 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2026 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2027 | const char *page, | |
2028 | size_t count) | |
2029 | { | |
0fd97ccf | 2030 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2031 | unsigned long tmp; |
2032 | int new_state, ret; | |
2033 | ||
6708bb27 AG |
2034 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2035 | pr_err("Unable to do implict ALUA on non valid" | |
c66ac9db NB |
2036 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2037 | return -EINVAL; | |
2038 | } | |
2039 | ||
2040 | ret = strict_strtoul(page, 0, &tmp); | |
2041 | if (ret < 0) { | |
6708bb27 | 2042 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db NB |
2043 | " %s\n", page); |
2044 | return -EINVAL; | |
2045 | } | |
2046 | new_state = (int)tmp; | |
2047 | ||
2048 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
6708bb27 | 2049 | pr_err("Unable to process implict configfs ALUA" |
5e58b029 | 2050 | " transition while TPGS_IMPLICT_ALUA is disabled\n"); |
c66ac9db NB |
2051 | return -EINVAL; |
2052 | } | |
2053 | ||
0fd97ccf | 2054 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2055 | NULL, NULL, new_state, 0); |
2056 | return (!ret) ? count : -EINVAL; | |
2057 | } | |
2058 | ||
2059 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2060 | ||
2061 | /* | |
2062 | * alua_access_status | |
2063 | */ | |
2064 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2065 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2066 | char *page) | |
2067 | { | |
2068 | return sprintf(page, "%s\n", | |
2069 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2070 | } | |
2071 | ||
2072 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2073 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2074 | const char *page, | |
2075 | size_t count) | |
2076 | { | |
2077 | unsigned long tmp; | |
2078 | int new_status, ret; | |
2079 | ||
6708bb27 AG |
2080 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2081 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2082 | " valid tg_pt_gp ID: %hu\n", |
2083 | tg_pt_gp->tg_pt_gp_valid_id); | |
2084 | return -EINVAL; | |
2085 | } | |
2086 | ||
2087 | ret = strict_strtoul(page, 0, &tmp); | |
2088 | if (ret < 0) { | |
6708bb27 | 2089 | pr_err("Unable to extract new ALUA access status" |
c66ac9db NB |
2090 | " from %s\n", page); |
2091 | return -EINVAL; | |
2092 | } | |
2093 | new_status = (int)tmp; | |
2094 | ||
2095 | if ((new_status != ALUA_STATUS_NONE) && | |
2096 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2097 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
6708bb27 | 2098 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2099 | new_status); |
2100 | return -EINVAL; | |
2101 | } | |
2102 | ||
2103 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2104 | return count; | |
2105 | } | |
2106 | ||
2107 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2108 | ||
2109 | /* | |
2110 | * alua_access_type | |
2111 | */ | |
2112 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2113 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2114 | char *page) | |
2115 | { | |
2116 | return core_alua_show_access_type(tg_pt_gp, page); | |
2117 | } | |
2118 | ||
2119 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2120 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2121 | const char *page, | |
2122 | size_t count) | |
2123 | { | |
2124 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2125 | } | |
2126 | ||
2127 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2128 | ||
2129 | /* | |
2130 | * alua_write_metadata | |
2131 | */ | |
2132 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2133 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2134 | char *page) | |
2135 | { | |
2136 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2137 | } | |
2138 | ||
2139 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2140 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2141 | const char *page, | |
2142 | size_t count) | |
2143 | { | |
2144 | unsigned long tmp; | |
2145 | int ret; | |
2146 | ||
2147 | ret = strict_strtoul(page, 0, &tmp); | |
2148 | if (ret < 0) { | |
6708bb27 | 2149 | pr_err("Unable to extract alua_write_metadata\n"); |
c66ac9db NB |
2150 | return -EINVAL; |
2151 | } | |
2152 | ||
2153 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2154 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2155 | " %lu\n", tmp); |
2156 | return -EINVAL; | |
2157 | } | |
2158 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2159 | ||
2160 | return count; | |
2161 | } | |
2162 | ||
2163 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2164 | ||
2165 | ||
2166 | ||
2167 | /* | |
2168 | * nonop_delay_msecs | |
2169 | */ | |
2170 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2171 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2172 | char *page) | |
2173 | { | |
2174 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2175 | ||
2176 | } | |
2177 | ||
2178 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2179 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2180 | const char *page, | |
2181 | size_t count) | |
2182 | { | |
2183 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2184 | } | |
2185 | ||
2186 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2187 | ||
2188 | /* | |
2189 | * trans_delay_msecs | |
2190 | */ | |
2191 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2192 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2193 | char *page) | |
2194 | { | |
2195 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2196 | } | |
2197 | ||
2198 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2199 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2200 | const char *page, | |
2201 | size_t count) | |
2202 | { | |
2203 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2204 | } | |
2205 | ||
2206 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2207 | ||
5b9a4d72 NB |
2208 | /* |
2209 | * implict_trans_secs | |
2210 | */ | |
2211 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implict_trans_secs( | |
2212 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2213 | char *page) | |
2214 | { | |
2215 | return core_alua_show_implict_trans_secs(tg_pt_gp, page); | |
2216 | } | |
2217 | ||
2218 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implict_trans_secs( | |
2219 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2220 | const char *page, | |
2221 | size_t count) | |
2222 | { | |
2223 | return core_alua_store_implict_trans_secs(tg_pt_gp, page, count); | |
2224 | } | |
2225 | ||
2226 | SE_DEV_ALUA_TG_PT_ATTR(implict_trans_secs, S_IRUGO | S_IWUSR); | |
2227 | ||
c66ac9db NB |
2228 | /* |
2229 | * preferred | |
2230 | */ | |
2231 | ||
2232 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2233 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2234 | char *page) | |
2235 | { | |
2236 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2237 | } | |
2238 | ||
2239 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2240 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2241 | const char *page, | |
2242 | size_t count) | |
2243 | { | |
2244 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2245 | } | |
2246 | ||
2247 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2248 | ||
2249 | /* | |
2250 | * tg_pt_gp_id | |
2251 | */ | |
2252 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2253 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2254 | char *page) | |
2255 | { | |
6708bb27 | 2256 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2257 | return 0; |
2258 | ||
2259 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2260 | } | |
2261 | ||
2262 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2263 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2264 | const char *page, | |
2265 | size_t count) | |
2266 | { | |
2267 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2268 | unsigned long tg_pt_gp_id; | |
2269 | int ret; | |
2270 | ||
2271 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2272 | if (ret < 0) { | |
6708bb27 | 2273 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2274 | " tg_pt_gp_id\n", ret); |
2275 | return -EINVAL; | |
2276 | } | |
2277 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2278 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2279 | " 0x0000ffff\n", tg_pt_gp_id); |
2280 | return -EINVAL; | |
2281 | } | |
2282 | ||
2283 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2284 | if (ret < 0) | |
2285 | return -EINVAL; | |
2286 | ||
6708bb27 | 2287 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2288 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2289 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2290 | tg_pt_gp->tg_pt_gp_id); | |
2291 | ||
2292 | return count; | |
2293 | } | |
2294 | ||
2295 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2296 | ||
2297 | /* | |
2298 | * members | |
2299 | */ | |
2300 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2301 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2302 | char *page) | |
2303 | { | |
2304 | struct se_port *port; | |
2305 | struct se_portal_group *tpg; | |
2306 | struct se_lun *lun; | |
2307 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2308 | ssize_t len = 0, cur_len; | |
2309 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2310 | ||
2311 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2312 | ||
2313 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2314 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2315 | tg_pt_gp_mem_list) { | |
2316 | port = tg_pt_gp_mem->tg_pt; | |
2317 | tpg = port->sep_tpg; | |
2318 | lun = port->sep_lun; | |
2319 | ||
2320 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2321 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2322 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2323 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2324 | config_item_name(&lun->lun_group.cg_item)); |
2325 | cur_len++; /* Extra byte for NULL terminator */ | |
2326 | ||
2327 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2328 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2329 | "_members buffer\n"); |
2330 | break; | |
2331 | } | |
2332 | memcpy(page+len, buf, cur_len); | |
2333 | len += cur_len; | |
2334 | } | |
2335 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2336 | ||
2337 | return len; | |
2338 | } | |
2339 | ||
2340 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2341 | ||
2342 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2343 | tg_pt_gp_group); | |
2344 | ||
2345 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2346 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2347 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2348 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2349 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2350 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2351 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
5b9a4d72 | 2352 | &target_core_alua_tg_pt_gp_implict_trans_secs.attr, |
c66ac9db NB |
2353 | &target_core_alua_tg_pt_gp_preferred.attr, |
2354 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2355 | &target_core_alua_tg_pt_gp_members.attr, | |
2356 | NULL, | |
2357 | }; | |
2358 | ||
1f6fe7cb NB |
2359 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2360 | { | |
2361 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2362 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2363 | ||
2364 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2365 | } | |
2366 | ||
c66ac9db | 2367 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2368 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2369 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2370 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2371 | }; | |
2372 | ||
2373 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2374 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2375 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2376 | .ct_owner = THIS_MODULE, | |
2377 | }; | |
2378 | ||
2379 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2380 | ||
2381 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2382 | ||
2383 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2384 | struct config_group *group, | |
2385 | const char *name) | |
2386 | { | |
2387 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2388 | alua_tg_pt_gps_group); | |
2389 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2390 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2391 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2392 | ||
0fd97ccf | 2393 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2394 | if (!tg_pt_gp) |
c66ac9db NB |
2395 | return NULL; |
2396 | ||
2397 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2398 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2399 | ||
2400 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2401 | &target_core_alua_tg_pt_gp_cit); | |
2402 | ||
6708bb27 | 2403 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2404 | " Group: alua/tg_pt_gps/%s\n", |
2405 | config_item_name(alua_tg_pt_gp_ci)); | |
2406 | ||
2407 | return alua_tg_pt_gp_cg; | |
2408 | } | |
2409 | ||
2410 | static void target_core_alua_drop_tg_pt_gp( | |
2411 | struct config_group *group, | |
2412 | struct config_item *item) | |
2413 | { | |
2414 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2415 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2416 | ||
6708bb27 | 2417 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2418 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2419 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2420 | /* |
2421 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2422 | * -> target_core_alua_tg_pt_gp_release(). | |
2423 | */ | |
c66ac9db | 2424 | config_item_put(item); |
c66ac9db NB |
2425 | } |
2426 | ||
2427 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2428 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2429 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2430 | }; | |
2431 | ||
2432 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2433 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2434 | .ct_owner = THIS_MODULE, | |
2435 | }; | |
2436 | ||
2437 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2438 | ||
2439 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2440 | ||
2441 | /* | |
2442 | * target_core_alua_cit is a ConfigFS group that lives under | |
2443 | * /sys/kernel/config/target/core/alua. There are default groups | |
2444 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2445 | * target_core_alua_cit in target_core_init_configfs() below. | |
2446 | */ | |
2447 | static struct config_item_type target_core_alua_cit = { | |
2448 | .ct_item_ops = NULL, | |
2449 | .ct_attrs = NULL, | |
2450 | .ct_owner = THIS_MODULE, | |
2451 | }; | |
2452 | ||
2453 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2454 | ||
12d23384 NB |
2455 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2456 | ||
2457 | static struct config_group *target_core_stat_mkdir( | |
2458 | struct config_group *group, | |
2459 | const char *name) | |
2460 | { | |
2461 | return ERR_PTR(-ENOSYS); | |
2462 | } | |
2463 | ||
2464 | static void target_core_stat_rmdir( | |
2465 | struct config_group *group, | |
2466 | struct config_item *item) | |
2467 | { | |
2468 | return; | |
2469 | } | |
2470 | ||
2471 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2472 | .make_group = &target_core_stat_mkdir, | |
2473 | .drop_item = &target_core_stat_rmdir, | |
2474 | }; | |
2475 | ||
2476 | static struct config_item_type target_core_stat_cit = { | |
2477 | .ct_group_ops = &target_core_stat_group_ops, | |
2478 | .ct_owner = THIS_MODULE, | |
2479 | }; | |
2480 | ||
2481 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2482 | ||
c66ac9db NB |
2483 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2484 | ||
2485 | static struct config_group *target_core_make_subdev( | |
2486 | struct config_group *group, | |
2487 | const char *name) | |
2488 | { | |
2489 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2490 | struct se_subsystem_api *t; |
2491 | struct config_item *hba_ci = &group->cg_item; | |
2492 | struct se_hba *hba = item_to_hba(hba_ci); | |
0fd97ccf | 2493 | struct se_device *dev; |
c66ac9db | 2494 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
2495 | struct config_group *dev_stat_grp = NULL; |
2496 | int errno = -ENOMEM, ret; | |
c66ac9db | 2497 | |
12d23384 NB |
2498 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2499 | if (ret) | |
2500 | return ERR_PTR(ret); | |
c66ac9db NB |
2501 | /* |
2502 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2503 | */ | |
2504 | t = hba->transport; | |
2505 | ||
0fd97ccf CH |
2506 | dev = target_alloc_device(hba, name); |
2507 | if (!dev) | |
2508 | goto out_unlock; | |
2509 | ||
2510 | dev_cg = &dev->dev_group; | |
c66ac9db | 2511 | |
12d23384 | 2512 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, |
c66ac9db | 2513 | GFP_KERNEL); |
6708bb27 | 2514 | if (!dev_cg->default_groups) |
0fd97ccf | 2515 | goto out_free_device; |
c66ac9db | 2516 | |
0fd97ccf CH |
2517 | config_group_init_type_name(dev_cg, name, &target_core_dev_cit); |
2518 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", | |
c66ac9db | 2519 | &target_core_dev_attrib_cit); |
0fd97ccf | 2520 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
c66ac9db | 2521 | &target_core_dev_pr_cit); |
0fd97ccf | 2522 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
c66ac9db | 2523 | &target_core_dev_wwn_cit); |
0fd97ccf | 2524 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
c66ac9db | 2525 | "alua", &target_core_alua_tg_pt_gps_cit); |
0fd97ccf | 2526 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
12d23384 NB |
2527 | "statistics", &target_core_stat_cit); |
2528 | ||
0fd97ccf CH |
2529 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
2530 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
2531 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
2532 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
2533 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 2534 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 2535 | /* |
12d23384 | 2536 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2537 | */ |
0fd97ccf | 2538 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2539 | if (!tg_pt_gp) |
0fd97ccf CH |
2540 | goto out_free_dev_cg_default_groups; |
2541 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 2542 | |
0fd97ccf | 2543 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2544 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2545 | GFP_KERNEL); | |
6708bb27 AG |
2546 | if (!tg_pt_gp_cg->default_groups) { |
2547 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 2548 | "default_groups\n"); |
0fd97ccf | 2549 | goto out_free_tg_pt_gp; |
c66ac9db NB |
2550 | } |
2551 | ||
2552 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2553 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2554 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2555 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
2556 | /* |
2557 | * Add core/$HBA/$DEV/statistics/ default groups | |
2558 | */ | |
0fd97ccf | 2559 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2560 | dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, |
2561 | GFP_KERNEL); | |
2562 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2563 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 2564 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 2565 | } |
0fd97ccf | 2566 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2567 | |
2568 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
2569 | return dev_cg; |
2570 | ||
2571 | out_free_tg_pt_gp_cg_default_groups: | |
2572 | kfree(tg_pt_gp_cg->default_groups); | |
2573 | out_free_tg_pt_gp: | |
2574 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2575 | out_free_dev_cg_default_groups: | |
2576 | kfree(dev_cg->default_groups); | |
2577 | out_free_device: | |
2578 | target_free_device(dev); | |
2579 | out_unlock: | |
c66ac9db | 2580 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2581 | return ERR_PTR(errno); |
c66ac9db NB |
2582 | } |
2583 | ||
2584 | static void target_core_drop_subdev( | |
2585 | struct config_group *group, | |
2586 | struct config_item *item) | |
2587 | { | |
0fd97ccf CH |
2588 | struct config_group *dev_cg = to_config_group(item); |
2589 | struct se_device *dev = | |
2590 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2591 | struct se_hba *hba; |
c66ac9db | 2592 | struct config_item *df_item; |
0fd97ccf | 2593 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2594 | int i; |
c66ac9db | 2595 | |
0fd97ccf | 2596 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 2597 | |
1f6fe7cb | 2598 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2599 | |
0fd97ccf | 2600 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2601 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2602 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2603 | dev_stat_grp->default_groups[i] = NULL; | |
2604 | config_item_put(df_item); | |
2605 | } | |
2606 | kfree(dev_stat_grp->default_groups); | |
2607 | ||
0fd97ccf | 2608 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2609 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2610 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2611 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2612 | config_item_put(df_item); | |
2613 | } | |
2614 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2615 | /* |
2616 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2617 | * directly from target_core_alua_tg_pt_gp_release(). | |
2618 | */ | |
0fd97ccf | 2619 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 2620 | |
c66ac9db NB |
2621 | for (i = 0; dev_cg->default_groups[i]; i++) { |
2622 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2623 | dev_cg->default_groups[i] = NULL; | |
2624 | config_item_put(df_item); | |
2625 | } | |
c66ac9db | 2626 | /* |
0fd97ccf | 2627 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 2628 | */ |
1f6fe7cb | 2629 | config_item_put(item); |
c66ac9db | 2630 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2631 | } |
2632 | ||
2633 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2634 | .make_group = target_core_make_subdev, | |
2635 | .drop_item = target_core_drop_subdev, | |
2636 | }; | |
2637 | ||
2638 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2639 | #define SE_HBA_ATTR(_name, _mode) \ | |
2640 | static struct target_core_hba_attribute \ | |
2641 | target_core_hba_##_name = \ | |
2642 | __CONFIGFS_EATTR(_name, _mode, \ | |
2643 | target_core_hba_show_attr_##_name, \ | |
2644 | target_core_hba_store_attr_##_name); | |
2645 | ||
2646 | #define SE_HBA_ATTR_RO(_name) \ | |
2647 | static struct target_core_hba_attribute \ | |
2648 | target_core_hba_##_name = \ | |
2649 | __CONFIGFS_EATTR_RO(_name, \ | |
2650 | target_core_hba_show_attr_##_name); | |
2651 | ||
2652 | static ssize_t target_core_hba_show_attr_hba_info( | |
2653 | struct se_hba *hba, | |
2654 | char *page) | |
2655 | { | |
2656 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2657 | hba->hba_id, hba->transport->name, | |
2658 | TARGET_CORE_CONFIGFS_VERSION); | |
2659 | } | |
2660 | ||
2661 | SE_HBA_ATTR_RO(hba_info); | |
2662 | ||
2663 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2664 | char *page) | |
2665 | { | |
2666 | int hba_mode = 0; | |
2667 | ||
2668 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2669 | hba_mode = 1; | |
2670 | ||
2671 | return sprintf(page, "%d\n", hba_mode); | |
2672 | } | |
2673 | ||
2674 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2675 | const char *page, size_t count) | |
2676 | { | |
2677 | struct se_subsystem_api *transport = hba->transport; | |
2678 | unsigned long mode_flag; | |
2679 | int ret; | |
2680 | ||
2681 | if (transport->pmode_enable_hba == NULL) | |
2682 | return -EINVAL; | |
2683 | ||
2684 | ret = strict_strtoul(page, 0, &mode_flag); | |
2685 | if (ret < 0) { | |
6708bb27 | 2686 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
c66ac9db NB |
2687 | return -EINVAL; |
2688 | } | |
2689 | ||
0fd97ccf | 2690 | if (hba->dev_count) { |
6708bb27 | 2691 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
2692 | return -EINVAL; |
2693 | } | |
c66ac9db NB |
2694 | |
2695 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2696 | if (ret < 0) | |
2697 | return -EINVAL; | |
2698 | if (ret > 0) | |
2699 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2700 | else if (ret == 0) | |
2701 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2702 | ||
2703 | return count; | |
2704 | } | |
2705 | ||
2706 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2707 | ||
2708 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2709 | ||
1f6fe7cb NB |
2710 | static void target_core_hba_release(struct config_item *item) |
2711 | { | |
2712 | struct se_hba *hba = container_of(to_config_group(item), | |
2713 | struct se_hba, hba_group); | |
2714 | core_delete_hba(hba); | |
2715 | } | |
2716 | ||
c66ac9db NB |
2717 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2718 | &target_core_hba_hba_info.attr, | |
2719 | &target_core_hba_hba_mode.attr, | |
2720 | NULL, | |
2721 | }; | |
2722 | ||
2723 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2724 | .release = target_core_hba_release, |
c66ac9db NB |
2725 | .show_attribute = target_core_hba_attr_show, |
2726 | .store_attribute = target_core_hba_attr_store, | |
2727 | }; | |
2728 | ||
2729 | static struct config_item_type target_core_hba_cit = { | |
2730 | .ct_item_ops = &target_core_hba_item_ops, | |
2731 | .ct_group_ops = &target_core_hba_group_ops, | |
2732 | .ct_attrs = target_core_hba_attrs, | |
2733 | .ct_owner = THIS_MODULE, | |
2734 | }; | |
2735 | ||
2736 | static struct config_group *target_core_call_addhbatotarget( | |
2737 | struct config_group *group, | |
2738 | const char *name) | |
2739 | { | |
2740 | char *se_plugin_str, *str, *str2; | |
2741 | struct se_hba *hba; | |
2742 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
2743 | unsigned long plugin_dep_id = 0; | |
2744 | int ret; | |
2745 | ||
2746 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 2747 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 2748 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
2749 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
2750 | TARGET_CORE_NAME_MAX_LEN); | |
2751 | return ERR_PTR(-ENAMETOOLONG); | |
2752 | } | |
2753 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
2754 | ||
2755 | str = strstr(buf, "_"); | |
6708bb27 AG |
2756 | if (!str) { |
2757 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
2758 | return ERR_PTR(-EINVAL); |
2759 | } | |
2760 | se_plugin_str = buf; | |
2761 | /* | |
2762 | * Special case for subsystem plugins that have "_" in their names. | |
2763 | * Namely rd_direct and rd_mcp.. | |
2764 | */ | |
2765 | str2 = strstr(str+1, "_"); | |
6708bb27 | 2766 | if (str2) { |
c66ac9db NB |
2767 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
2768 | str2++; /* Skip to start of plugin dependent ID */ | |
2769 | str = str2; | |
2770 | } else { | |
2771 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
2772 | str++; /* Skip to start of plugin dependent ID */ | |
2773 | } | |
2774 | ||
2775 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
2776 | if (ret < 0) { | |
6708bb27 | 2777 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2778 | " plugin_dep_id\n", ret); |
2779 | return ERR_PTR(-EINVAL); | |
2780 | } | |
2781 | /* | |
2782 | * Load up TCM subsystem plugins if they have not already been loaded. | |
2783 | */ | |
dbc5623e | 2784 | transport_subsystem_check_init(); |
c66ac9db NB |
2785 | |
2786 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
2787 | if (IS_ERR(hba)) | |
2788 | return ERR_CAST(hba); | |
2789 | ||
2790 | config_group_init_type_name(&hba->hba_group, name, | |
2791 | &target_core_hba_cit); | |
2792 | ||
2793 | return &hba->hba_group; | |
2794 | } | |
2795 | ||
2796 | static void target_core_call_delhbafromtarget( | |
2797 | struct config_group *group, | |
2798 | struct config_item *item) | |
2799 | { | |
1f6fe7cb NB |
2800 | /* |
2801 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
2802 | * -> target_core_hba_release() | |
2803 | */ | |
c66ac9db | 2804 | config_item_put(item); |
c66ac9db NB |
2805 | } |
2806 | ||
2807 | static struct configfs_group_operations target_core_group_ops = { | |
2808 | .make_group = target_core_call_addhbatotarget, | |
2809 | .drop_item = target_core_call_delhbafromtarget, | |
2810 | }; | |
2811 | ||
2812 | static struct config_item_type target_core_cit = { | |
2813 | .ct_item_ops = NULL, | |
2814 | .ct_group_ops = &target_core_group_ops, | |
2815 | .ct_attrs = NULL, | |
2816 | .ct_owner = THIS_MODULE, | |
2817 | }; | |
2818 | ||
2819 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
2820 | ||
54550fab | 2821 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
2822 | { |
2823 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
2824 | struct config_group *lu_gp_cg = NULL; | |
2825 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
2826 | struct t10_alua_lu_gp *lu_gp; |
2827 | int ret; | |
2828 | ||
6708bb27 | 2829 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
2830 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
2831 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
2832 | ||
2833 | subsys = target_core_subsystem[0]; | |
2834 | config_group_init(&subsys->su_group); | |
2835 | mutex_init(&subsys->su_mutex); | |
2836 | ||
e3d6f909 | 2837 | ret = init_se_kmem_caches(); |
c66ac9db | 2838 | if (ret < 0) |
e3d6f909 | 2839 | return ret; |
c66ac9db NB |
2840 | /* |
2841 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
2842 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
2843 | */ | |
2844 | target_cg = &subsys->su_group; | |
2845 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
2846 | GFP_KERNEL); | |
6708bb27 AG |
2847 | if (!target_cg->default_groups) { |
2848 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 2849 | ret = -ENOMEM; |
c66ac9db NB |
2850 | goto out_global; |
2851 | } | |
2852 | ||
e3d6f909 | 2853 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 2854 | "core", &target_core_cit); |
e3d6f909 | 2855 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
2856 | target_cg->default_groups[1] = NULL; |
2857 | /* | |
2858 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
2859 | */ | |
e3d6f909 | 2860 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
2861 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2862 | GFP_KERNEL); | |
6708bb27 AG |
2863 | if (!hba_cg->default_groups) { |
2864 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 2865 | ret = -ENOMEM; |
c66ac9db NB |
2866 | goto out_global; |
2867 | } | |
e3d6f909 | 2868 | config_group_init_type_name(&alua_group, |
c66ac9db | 2869 | "alua", &target_core_alua_cit); |
e3d6f909 | 2870 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
2871 | hba_cg->default_groups[1] = NULL; |
2872 | /* | |
2873 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
2874 | * groups under /sys/kernel/config/target/core/alua/ | |
2875 | */ | |
e3d6f909 | 2876 | alua_cg = &alua_group; |
c66ac9db NB |
2877 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2878 | GFP_KERNEL); | |
6708bb27 AG |
2879 | if (!alua_cg->default_groups) { |
2880 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 2881 | ret = -ENOMEM; |
c66ac9db NB |
2882 | goto out_global; |
2883 | } | |
2884 | ||
e3d6f909 | 2885 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 2886 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 2887 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
2888 | alua_cg->default_groups[1] = NULL; |
2889 | /* | |
2890 | * Add core/alua/lu_gps/default_lu_gp | |
2891 | */ | |
2892 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
2893 | if (IS_ERR(lu_gp)) { |
2894 | ret = -ENOMEM; | |
c66ac9db | 2895 | goto out_global; |
37bb7899 | 2896 | } |
c66ac9db | 2897 | |
e3d6f909 | 2898 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
2899 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2900 | GFP_KERNEL); | |
6708bb27 AG |
2901 | if (!lu_gp_cg->default_groups) { |
2902 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 2903 | ret = -ENOMEM; |
c66ac9db NB |
2904 | goto out_global; |
2905 | } | |
2906 | ||
2907 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
2908 | &target_core_alua_lu_gp_cit); | |
2909 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
2910 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2911 | default_lu_gp = lu_gp; |
c66ac9db NB |
2912 | /* |
2913 | * Register the target_core_mod subsystem with configfs. | |
2914 | */ | |
2915 | ret = configfs_register_subsystem(subsys); | |
2916 | if (ret < 0) { | |
6708bb27 | 2917 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
2918 | ret, subsys->su_group.cg_item.ci_namebuf); |
2919 | goto out_global; | |
2920 | } | |
6708bb27 | 2921 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
2922 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
2923 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
2924 | /* | |
2925 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
2926 | */ | |
2927 | ret = rd_module_init(); | |
2928 | if (ret < 0) | |
2929 | goto out; | |
2930 | ||
0d0f9dfb RD |
2931 | ret = core_dev_setup_virtual_lun0(); |
2932 | if (ret < 0) | |
c66ac9db NB |
2933 | goto out; |
2934 | ||
c66ac9db NB |
2935 | return 0; |
2936 | ||
2937 | out: | |
2938 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
2939 | core_dev_release_virtual_lun0(); |
2940 | rd_module_exit(); | |
2941 | out_global: | |
e3d6f909 AG |
2942 | if (default_lu_gp) { |
2943 | core_alua_free_lu_gp(default_lu_gp); | |
2944 | default_lu_gp = NULL; | |
c66ac9db NB |
2945 | } |
2946 | if (lu_gp_cg) | |
2947 | kfree(lu_gp_cg->default_groups); | |
2948 | if (alua_cg) | |
2949 | kfree(alua_cg->default_groups); | |
2950 | if (hba_cg) | |
2951 | kfree(hba_cg->default_groups); | |
2952 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
2953 | release_se_kmem_caches(); |
2954 | return ret; | |
c66ac9db NB |
2955 | } |
2956 | ||
54550fab | 2957 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
2958 | { |
2959 | struct configfs_subsystem *subsys; | |
2960 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
2961 | struct config_item *item; | |
2962 | int i; | |
2963 | ||
c66ac9db NB |
2964 | subsys = target_core_subsystem[0]; |
2965 | ||
e3d6f909 | 2966 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
2967 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
2968 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
2969 | lu_gp_cg->default_groups[i] = NULL; | |
2970 | config_item_put(item); | |
2971 | } | |
2972 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 2973 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 2974 | |
e3d6f909 | 2975 | alua_cg = &alua_group; |
c66ac9db NB |
2976 | for (i = 0; alua_cg->default_groups[i]; i++) { |
2977 | item = &alua_cg->default_groups[i]->cg_item; | |
2978 | alua_cg->default_groups[i] = NULL; | |
2979 | config_item_put(item); | |
2980 | } | |
2981 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 2982 | alua_cg->default_groups = NULL; |
c66ac9db | 2983 | |
e3d6f909 | 2984 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
2985 | for (i = 0; hba_cg->default_groups[i]; i++) { |
2986 | item = &hba_cg->default_groups[i]->cg_item; | |
2987 | hba_cg->default_groups[i] = NULL; | |
2988 | config_item_put(item); | |
2989 | } | |
2990 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
2991 | hba_cg->default_groups = NULL; |
2992 | /* | |
2993 | * We expect subsys->su_group.default_groups to be released | |
2994 | * by configfs subsystem provider logic.. | |
2995 | */ | |
2996 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
2997 | kfree(subsys->su_group.default_groups); |
2998 | ||
e3d6f909 AG |
2999 | core_alua_free_lu_gp(default_lu_gp); |
3000 | default_lu_gp = NULL; | |
7c2bf6e9 | 3001 | |
6708bb27 | 3002 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3003 | " Infrastructure\n"); |
3004 | ||
c66ac9db NB |
3005 | core_dev_release_virtual_lun0(); |
3006 | rd_module_exit(); | |
e3d6f909 | 3007 | release_se_kmem_caches(); |
c66ac9db NB |
3008 | } |
3009 | ||
3010 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3011 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3012 | MODULE_LICENSE("GPL"); | |
3013 | ||
3014 | module_init(target_core_init_configfs); | |
3015 | module_exit(target_core_exit_configfs); |