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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 | * | |
6 | * Copyright (c) 2008-2010 Rising Tide Systems | |
7 | * Copyright (c) 2008-2010 Linux-iSCSI.org | |
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> | |
26 | #include <linux/version.h> | |
27 | #include <generated/utsrelease.h> | |
28 | #include <linux/utsname.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/fs.h> | |
31 | #include <linux/namei.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/types.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/unistd.h> | |
36 | #include <linux/string.h> | |
37 | #include <linux/parser.h> | |
38 | #include <linux/syscalls.h> | |
39 | #include <linux/configfs.h> | |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
42 | #include <target/target_core_device.h> | |
43 | #include <target/target_core_transport.h> | |
44 | #include <target/target_core_fabric_ops.h> | |
45 | #include <target/target_core_fabric_configfs.h> | |
46 | #include <target/target_core_configfs.h> | |
47 | #include <target/configfs_macros.h> | |
48 | ||
49 | #include "target_core_alua.h" | |
50 | #include "target_core_hba.h" | |
51 | #include "target_core_pr.h" | |
52 | #include "target_core_rd.h" | |
53 | ||
54 | static struct list_head g_tf_list; | |
55 | static struct mutex g_tf_lock; | |
56 | ||
57 | struct target_core_configfs_attribute { | |
58 | struct configfs_attribute attr; | |
59 | ssize_t (*show)(void *, char *); | |
60 | ssize_t (*store)(void *, const char *, size_t); | |
61 | }; | |
62 | ||
63 | static inline struct se_hba * | |
64 | item_to_hba(struct config_item *item) | |
65 | { | |
66 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
67 | } | |
68 | ||
69 | /* | |
70 | * Attributes for /sys/kernel/config/target/ | |
71 | */ | |
72 | static ssize_t target_core_attr_show(struct config_item *item, | |
73 | struct configfs_attribute *attr, | |
74 | char *page) | |
75 | { | |
76 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
77 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
78 | utsname()->sysname, utsname()->machine); | |
79 | } | |
80 | ||
81 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
82 | .show_attribute = target_core_attr_show, | |
83 | }; | |
84 | ||
85 | static struct configfs_attribute target_core_item_attr_version = { | |
86 | .ca_owner = THIS_MODULE, | |
87 | .ca_name = "version", | |
88 | .ca_mode = S_IRUGO, | |
89 | }; | |
90 | ||
91 | static struct target_fabric_configfs *target_core_get_fabric( | |
92 | const char *name) | |
93 | { | |
94 | struct target_fabric_configfs *tf; | |
95 | ||
96 | if (!(name)) | |
97 | return NULL; | |
98 | ||
99 | mutex_lock(&g_tf_lock); | |
100 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
101 | if (!(strcmp(tf->tf_name, name))) { | |
102 | atomic_inc(&tf->tf_access_cnt); | |
103 | mutex_unlock(&g_tf_lock); | |
104 | return tf; | |
105 | } | |
106 | } | |
107 | mutex_unlock(&g_tf_lock); | |
108 | ||
109 | return NULL; | |
110 | } | |
111 | ||
112 | /* | |
113 | * Called from struct target_core_group_ops->make_group() | |
114 | */ | |
115 | static struct config_group *target_core_register_fabric( | |
116 | struct config_group *group, | |
117 | const char *name) | |
118 | { | |
119 | struct target_fabric_configfs *tf; | |
120 | int ret; | |
121 | ||
122 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> group: %p name:" | |
123 | " %s\n", group, name); | |
124 | /* | |
125 | * Ensure that TCM subsystem plugins are loaded at this point for | |
126 | * using the RAMDISK_DR virtual LUN 0 and all other struct se_port | |
127 | * LUN symlinks. | |
128 | */ | |
129 | if (transport_subsystem_check_init() < 0) | |
130 | return ERR_PTR(-EINVAL); | |
131 | ||
132 | /* | |
133 | * Below are some hardcoded request_module() calls to automatically | |
134 | * local fabric modules when the following is called: | |
135 | * | |
136 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME | |
137 | * | |
138 | * Note that this does not limit which TCM fabric module can be | |
139 | * registered, but simply provids auto loading logic for modules with | |
140 | * mkdir(2) system calls with known TCM fabric modules. | |
141 | */ | |
142 | if (!(strncmp(name, "iscsi", 5))) { | |
143 | /* | |
144 | * Automatically load the LIO Target fabric module when the | |
145 | * following is called: | |
146 | * | |
147 | * mkdir -p $CONFIGFS/target/iscsi | |
148 | */ | |
149 | ret = request_module("iscsi_target_mod"); | |
150 | if (ret < 0) { | |
151 | printk(KERN_ERR "request_module() failed for" | |
152 | " iscsi_target_mod.ko: %d\n", ret); | |
153 | return ERR_PTR(-EINVAL); | |
154 | } | |
155 | } else if (!(strncmp(name, "loopback", 8))) { | |
156 | /* | |
157 | * Automatically load the tcm_loop fabric module when the | |
158 | * following is called: | |
159 | * | |
160 | * mkdir -p $CONFIGFS/target/loopback | |
161 | */ | |
162 | ret = request_module("tcm_loop"); | |
163 | if (ret < 0) { | |
164 | printk(KERN_ERR "request_module() failed for" | |
165 | " tcm_loop.ko: %d\n", ret); | |
166 | return ERR_PTR(-EINVAL); | |
167 | } | |
168 | } | |
169 | ||
170 | tf = target_core_get_fabric(name); | |
171 | if (!(tf)) { | |
172 | printk(KERN_ERR "target_core_get_fabric() failed for %s\n", | |
173 | name); | |
174 | return ERR_PTR(-EINVAL); | |
175 | } | |
176 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> Located fabric:" | |
177 | " %s\n", tf->tf_name); | |
178 | /* | |
179 | * On a successful target_core_get_fabric() look, the returned | |
180 | * struct target_fabric_configfs *tf will contain a usage reference. | |
181 | */ | |
182 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", | |
183 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
184 | ||
185 | tf->tf_group.default_groups = tf->tf_default_groups; | |
186 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
187 | tf->tf_group.default_groups[1] = NULL; | |
188 | ||
189 | config_group_init_type_name(&tf->tf_group, name, | |
190 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
191 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", | |
192 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); | |
193 | ||
194 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" | |
195 | " %s\n", tf->tf_group.cg_item.ci_name); | |
196 | /* | |
197 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
198 | */ | |
199 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
200 | tf->tf_fabric = &tf->tf_group.cg_item; | |
201 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" | |
202 | " for %s\n", name); | |
203 | ||
204 | return &tf->tf_group; | |
205 | } | |
206 | ||
207 | /* | |
208 | * Called from struct target_core_group_ops->drop_item() | |
209 | */ | |
210 | static void target_core_deregister_fabric( | |
211 | struct config_group *group, | |
212 | struct config_item *item) | |
213 | { | |
214 | struct target_fabric_configfs *tf = container_of( | |
215 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
216 | struct config_group *tf_group; | |
217 | struct config_item *df_item; | |
218 | int i; | |
219 | ||
220 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" | |
221 | " tf list\n", config_item_name(item)); | |
222 | ||
223 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> located fabric:" | |
224 | " %s\n", tf->tf_name); | |
225 | atomic_dec(&tf->tf_access_cnt); | |
226 | ||
227 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing" | |
228 | " tf->tf_fabric for %s\n", tf->tf_name); | |
229 | tf->tf_fabric = NULL; | |
230 | ||
231 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing ci" | |
232 | " %s\n", config_item_name(item)); | |
233 | ||
234 | tf_group = &tf->tf_group; | |
235 | for (i = 0; tf_group->default_groups[i]; i++) { | |
236 | df_item = &tf_group->default_groups[i]->cg_item; | |
237 | tf_group->default_groups[i] = NULL; | |
238 | config_item_put(df_item); | |
239 | } | |
240 | config_item_put(item); | |
241 | } | |
242 | ||
243 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
244 | .make_group = &target_core_register_fabric, | |
245 | .drop_item = &target_core_deregister_fabric, | |
246 | }; | |
247 | ||
248 | /* | |
249 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
250 | */ | |
251 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
252 | &target_core_item_attr_version, | |
253 | NULL, | |
254 | }; | |
255 | ||
256 | /* | |
257 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
258 | */ | |
259 | static struct config_item_type target_core_fabrics_item = { | |
260 | .ct_item_ops = &target_core_fabric_item_ops, | |
261 | .ct_group_ops = &target_core_fabric_group_ops, | |
262 | .ct_attrs = target_core_fabric_item_attrs, | |
263 | .ct_owner = THIS_MODULE, | |
264 | }; | |
265 | ||
266 | static struct configfs_subsystem target_core_fabrics = { | |
267 | .su_group = { | |
268 | .cg_item = { | |
269 | .ci_namebuf = "target", | |
270 | .ci_type = &target_core_fabrics_item, | |
271 | }, | |
272 | }, | |
273 | }; | |
274 | ||
275 | static struct configfs_subsystem *target_core_subsystem[] = { | |
276 | &target_core_fabrics, | |
277 | NULL, | |
278 | }; | |
279 | ||
280 | /*############################################################################## | |
281 | // Start functions called by external Target Fabrics Modules | |
282 | //############################################################################*/ | |
283 | ||
284 | /* | |
285 | * First function called by fabric modules to: | |
286 | * | |
287 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
288 | * 2) Add struct target_fabric_configfs to g_tf_list | |
289 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
290 | * into target_fabric_configfs_register(). | |
291 | */ | |
292 | struct target_fabric_configfs *target_fabric_configfs_init( | |
293 | struct module *fabric_mod, | |
294 | const char *name) | |
295 | { | |
296 | struct target_fabric_configfs *tf; | |
297 | ||
298 | if (!(fabric_mod)) { | |
299 | printk(KERN_ERR "Missing struct module *fabric_mod pointer\n"); | |
300 | return NULL; | |
301 | } | |
302 | if (!(name)) { | |
303 | printk(KERN_ERR "Unable to locate passed fabric name\n"); | |
304 | return NULL; | |
305 | } | |
306 | if (strlen(name) > TARGET_FABRIC_NAME_SIZE) { | |
307 | printk(KERN_ERR "Passed name: %s exceeds TARGET_FABRIC" | |
308 | "_NAME_SIZE\n", name); | |
309 | return NULL; | |
310 | } | |
311 | ||
312 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
313 | if (!(tf)) | |
314 | return ERR_PTR(-ENOMEM); | |
315 | ||
316 | INIT_LIST_HEAD(&tf->tf_list); | |
317 | atomic_set(&tf->tf_access_cnt, 0); | |
318 | /* | |
319 | * Setup the default generic struct config_item_type's (cits) in | |
320 | * struct target_fabric_configfs->tf_cit_tmpl | |
321 | */ | |
322 | tf->tf_module = fabric_mod; | |
323 | target_fabric_setup_cits(tf); | |
324 | ||
325 | tf->tf_subsys = target_core_subsystem[0]; | |
326 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
327 | ||
328 | mutex_lock(&g_tf_lock); | |
329 | list_add_tail(&tf->tf_list, &g_tf_list); | |
330 | mutex_unlock(&g_tf_lock); | |
331 | ||
332 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" | |
333 | ">>>>>>>>>>>>>>\n"); | |
334 | printk(KERN_INFO "Initialized struct target_fabric_configfs: %p for" | |
335 | " %s\n", tf, tf->tf_name); | |
336 | return tf; | |
337 | } | |
338 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
339 | ||
340 | /* | |
341 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
342 | */ | |
343 | void target_fabric_configfs_free( | |
344 | struct target_fabric_configfs *tf) | |
345 | { | |
346 | mutex_lock(&g_tf_lock); | |
347 | list_del(&tf->tf_list); | |
348 | mutex_unlock(&g_tf_lock); | |
349 | ||
350 | kfree(tf); | |
351 | } | |
352 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
353 | ||
354 | /* | |
355 | * Perform a sanity check of the passed tf->tf_ops before completing | |
356 | * TCM fabric module registration. | |
357 | */ | |
358 | static int target_fabric_tf_ops_check( | |
359 | struct target_fabric_configfs *tf) | |
360 | { | |
361 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
362 | ||
363 | if (!(tfo->get_fabric_name)) { | |
364 | printk(KERN_ERR "Missing tfo->get_fabric_name()\n"); | |
365 | return -EINVAL; | |
366 | } | |
367 | if (!(tfo->get_fabric_proto_ident)) { | |
368 | printk(KERN_ERR "Missing tfo->get_fabric_proto_ident()\n"); | |
369 | return -EINVAL; | |
370 | } | |
371 | if (!(tfo->tpg_get_wwn)) { | |
372 | printk(KERN_ERR "Missing tfo->tpg_get_wwn()\n"); | |
373 | return -EINVAL; | |
374 | } | |
375 | if (!(tfo->tpg_get_tag)) { | |
376 | printk(KERN_ERR "Missing tfo->tpg_get_tag()\n"); | |
377 | return -EINVAL; | |
378 | } | |
379 | if (!(tfo->tpg_get_default_depth)) { | |
380 | printk(KERN_ERR "Missing tfo->tpg_get_default_depth()\n"); | |
381 | return -EINVAL; | |
382 | } | |
383 | if (!(tfo->tpg_get_pr_transport_id)) { | |
384 | printk(KERN_ERR "Missing tfo->tpg_get_pr_transport_id()\n"); | |
385 | return -EINVAL; | |
386 | } | |
387 | if (!(tfo->tpg_get_pr_transport_id_len)) { | |
388 | printk(KERN_ERR "Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
389 | return -EINVAL; | |
390 | } | |
391 | if (!(tfo->tpg_check_demo_mode)) { | |
392 | printk(KERN_ERR "Missing tfo->tpg_check_demo_mode()\n"); | |
393 | return -EINVAL; | |
394 | } | |
395 | if (!(tfo->tpg_check_demo_mode_cache)) { | |
396 | printk(KERN_ERR "Missing tfo->tpg_check_demo_mode_cache()\n"); | |
397 | return -EINVAL; | |
398 | } | |
399 | if (!(tfo->tpg_check_demo_mode_write_protect)) { | |
400 | printk(KERN_ERR "Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
401 | return -EINVAL; | |
402 | } | |
403 | if (!(tfo->tpg_check_prod_mode_write_protect)) { | |
404 | printk(KERN_ERR "Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
405 | return -EINVAL; | |
406 | } | |
407 | if (!(tfo->tpg_alloc_fabric_acl)) { | |
408 | printk(KERN_ERR "Missing tfo->tpg_alloc_fabric_acl()\n"); | |
409 | return -EINVAL; | |
410 | } | |
411 | if (!(tfo->tpg_release_fabric_acl)) { | |
412 | printk(KERN_ERR "Missing tfo->tpg_release_fabric_acl()\n"); | |
413 | return -EINVAL; | |
414 | } | |
415 | if (!(tfo->tpg_get_inst_index)) { | |
416 | printk(KERN_ERR "Missing tfo->tpg_get_inst_index()\n"); | |
417 | return -EINVAL; | |
418 | } | |
419 | if (!(tfo->release_cmd_to_pool)) { | |
420 | printk(KERN_ERR "Missing tfo->release_cmd_to_pool()\n"); | |
421 | return -EINVAL; | |
422 | } | |
423 | if (!(tfo->release_cmd_direct)) { | |
424 | printk(KERN_ERR "Missing tfo->release_cmd_direct()\n"); | |
425 | return -EINVAL; | |
426 | } | |
427 | if (!(tfo->shutdown_session)) { | |
428 | printk(KERN_ERR "Missing tfo->shutdown_session()\n"); | |
429 | return -EINVAL; | |
430 | } | |
431 | if (!(tfo->close_session)) { | |
432 | printk(KERN_ERR "Missing tfo->close_session()\n"); | |
433 | return -EINVAL; | |
434 | } | |
435 | if (!(tfo->stop_session)) { | |
436 | printk(KERN_ERR "Missing tfo->stop_session()\n"); | |
437 | return -EINVAL; | |
438 | } | |
439 | if (!(tfo->fall_back_to_erl0)) { | |
440 | printk(KERN_ERR "Missing tfo->fall_back_to_erl0()\n"); | |
441 | return -EINVAL; | |
442 | } | |
443 | if (!(tfo->sess_logged_in)) { | |
444 | printk(KERN_ERR "Missing tfo->sess_logged_in()\n"); | |
445 | return -EINVAL; | |
446 | } | |
447 | if (!(tfo->sess_get_index)) { | |
448 | printk(KERN_ERR "Missing tfo->sess_get_index()\n"); | |
449 | return -EINVAL; | |
450 | } | |
451 | if (!(tfo->write_pending)) { | |
452 | printk(KERN_ERR "Missing tfo->write_pending()\n"); | |
453 | return -EINVAL; | |
454 | } | |
455 | if (!(tfo->write_pending_status)) { | |
456 | printk(KERN_ERR "Missing tfo->write_pending_status()\n"); | |
457 | return -EINVAL; | |
458 | } | |
459 | if (!(tfo->set_default_node_attributes)) { | |
460 | printk(KERN_ERR "Missing tfo->set_default_node_attributes()\n"); | |
461 | return -EINVAL; | |
462 | } | |
463 | if (!(tfo->get_task_tag)) { | |
464 | printk(KERN_ERR "Missing tfo->get_task_tag()\n"); | |
465 | return -EINVAL; | |
466 | } | |
467 | if (!(tfo->get_cmd_state)) { | |
468 | printk(KERN_ERR "Missing tfo->get_cmd_state()\n"); | |
469 | return -EINVAL; | |
470 | } | |
471 | if (!(tfo->new_cmd_failure)) { | |
472 | printk(KERN_ERR "Missing tfo->new_cmd_failure()\n"); | |
473 | return -EINVAL; | |
474 | } | |
475 | if (!(tfo->queue_data_in)) { | |
476 | printk(KERN_ERR "Missing tfo->queue_data_in()\n"); | |
477 | return -EINVAL; | |
478 | } | |
479 | if (!(tfo->queue_status)) { | |
480 | printk(KERN_ERR "Missing tfo->queue_status()\n"); | |
481 | return -EINVAL; | |
482 | } | |
483 | if (!(tfo->queue_tm_rsp)) { | |
484 | printk(KERN_ERR "Missing tfo->queue_tm_rsp()\n"); | |
485 | return -EINVAL; | |
486 | } | |
487 | if (!(tfo->set_fabric_sense_len)) { | |
488 | printk(KERN_ERR "Missing tfo->set_fabric_sense_len()\n"); | |
489 | return -EINVAL; | |
490 | } | |
491 | if (!(tfo->get_fabric_sense_len)) { | |
492 | printk(KERN_ERR "Missing tfo->get_fabric_sense_len()\n"); | |
493 | return -EINVAL; | |
494 | } | |
495 | if (!(tfo->is_state_remove)) { | |
496 | printk(KERN_ERR "Missing tfo->is_state_remove()\n"); | |
497 | return -EINVAL; | |
498 | } | |
499 | if (!(tfo->pack_lun)) { | |
500 | printk(KERN_ERR "Missing tfo->pack_lun()\n"); | |
501 | return -EINVAL; | |
502 | } | |
503 | /* | |
504 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
505 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
506 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
507 | */ | |
508 | if (!(tfo->fabric_make_wwn)) { | |
509 | printk(KERN_ERR "Missing tfo->fabric_make_wwn()\n"); | |
510 | return -EINVAL; | |
511 | } | |
512 | if (!(tfo->fabric_drop_wwn)) { | |
513 | printk(KERN_ERR "Missing tfo->fabric_drop_wwn()\n"); | |
514 | return -EINVAL; | |
515 | } | |
516 | if (!(tfo->fabric_make_tpg)) { | |
517 | printk(KERN_ERR "Missing tfo->fabric_make_tpg()\n"); | |
518 | return -EINVAL; | |
519 | } | |
520 | if (!(tfo->fabric_drop_tpg)) { | |
521 | printk(KERN_ERR "Missing tfo->fabric_drop_tpg()\n"); | |
522 | return -EINVAL; | |
523 | } | |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
528 | /* | |
529 | * Called 2nd from fabric module with returned parameter of | |
530 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
531 | * | |
532 | * Upon a successful registration, the new fabric's struct config_item is | |
533 | * return. Also, a pointer to this struct is set in the passed | |
534 | * struct target_fabric_configfs. | |
535 | */ | |
536 | int target_fabric_configfs_register( | |
537 | struct target_fabric_configfs *tf) | |
538 | { | |
539 | struct config_group *su_group; | |
540 | int ret; | |
541 | ||
542 | if (!(tf)) { | |
543 | printk(KERN_ERR "Unable to locate target_fabric_configfs" | |
544 | " pointer\n"); | |
545 | return -EINVAL; | |
546 | } | |
547 | if (!(tf->tf_subsys)) { | |
548 | printk(KERN_ERR "Unable to target struct config_subsystem" | |
549 | " pointer\n"); | |
550 | return -EINVAL; | |
551 | } | |
552 | su_group = &tf->tf_subsys->su_group; | |
553 | if (!(su_group)) { | |
554 | printk(KERN_ERR "Unable to locate target struct config_group" | |
555 | " pointer\n"); | |
556 | return -EINVAL; | |
557 | } | |
558 | ret = target_fabric_tf_ops_check(tf); | |
559 | if (ret < 0) | |
560 | return ret; | |
561 | ||
562 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" | |
563 | ">>>>>>>>>>\n"); | |
564 | return 0; | |
565 | } | |
566 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
567 | ||
568 | void target_fabric_configfs_deregister( | |
569 | struct target_fabric_configfs *tf) | |
570 | { | |
571 | struct config_group *su_group; | |
572 | struct configfs_subsystem *su; | |
573 | ||
574 | if (!(tf)) { | |
575 | printk(KERN_ERR "Unable to locate passed target_fabric_" | |
576 | "configfs\n"); | |
577 | return; | |
578 | } | |
579 | su = tf->tf_subsys; | |
580 | if (!(su)) { | |
581 | printk(KERN_ERR "Unable to locate passed tf->tf_subsys" | |
582 | " pointer\n"); | |
583 | return; | |
584 | } | |
585 | su_group = &tf->tf_subsys->su_group; | |
586 | if (!(su_group)) { | |
587 | printk(KERN_ERR "Unable to locate target struct config_group" | |
588 | " pointer\n"); | |
589 | return; | |
590 | } | |
591 | ||
592 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" | |
593 | ">>>>>>>>>>>>\n"); | |
594 | mutex_lock(&g_tf_lock); | |
595 | if (atomic_read(&tf->tf_access_cnt)) { | |
596 | mutex_unlock(&g_tf_lock); | |
597 | printk(KERN_ERR "Non zero tf->tf_access_cnt for fabric %s\n", | |
598 | tf->tf_name); | |
599 | BUG(); | |
600 | } | |
601 | list_del(&tf->tf_list); | |
602 | mutex_unlock(&g_tf_lock); | |
603 | ||
604 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" | |
605 | " %s\n", tf->tf_name); | |
606 | tf->tf_module = NULL; | |
607 | tf->tf_subsys = NULL; | |
608 | kfree(tf); | |
609 | ||
610 | printk("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" | |
611 | ">>>>>\n"); | |
612 | return; | |
613 | } | |
614 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
615 | ||
616 | /*############################################################################## | |
617 | // Stop functions called by external Target Fabrics Modules | |
618 | //############################################################################*/ | |
619 | ||
620 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
621 | ||
622 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
623 | static ssize_t target_core_dev_show_attr_##_name( \ | |
624 | struct se_dev_attrib *da, \ | |
625 | char *page) \ | |
626 | { \ | |
627 | struct se_device *dev; \ | |
628 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
629 | ssize_t rb; \ | |
630 | \ | |
631 | spin_lock(&se_dev->se_dev_lock); \ | |
632 | dev = se_dev->se_dev_ptr; \ | |
633 | if (!(dev)) { \ | |
634 | spin_unlock(&se_dev->se_dev_lock); \ | |
635 | return -ENODEV; \ | |
636 | } \ | |
637 | rb = snprintf(page, PAGE_SIZE, "%u\n", (u32)DEV_ATTRIB(dev)->_name); \ | |
638 | spin_unlock(&se_dev->se_dev_lock); \ | |
639 | \ | |
640 | return rb; \ | |
641 | } | |
642 | ||
643 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
644 | static ssize_t target_core_dev_store_attr_##_name( \ | |
645 | struct se_dev_attrib *da, \ | |
646 | const char *page, \ | |
647 | size_t count) \ | |
648 | { \ | |
649 | struct se_device *dev; \ | |
650 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
651 | unsigned long val; \ | |
652 | int ret; \ | |
653 | \ | |
654 | spin_lock(&se_dev->se_dev_lock); \ | |
655 | dev = se_dev->se_dev_ptr; \ | |
656 | if (!(dev)) { \ | |
657 | spin_unlock(&se_dev->se_dev_lock); \ | |
658 | return -ENODEV; \ | |
659 | } \ | |
660 | ret = strict_strtoul(page, 0, &val); \ | |
661 | if (ret < 0) { \ | |
662 | spin_unlock(&se_dev->se_dev_lock); \ | |
663 | printk(KERN_ERR "strict_strtoul() failed with" \ | |
664 | " ret: %d\n", ret); \ | |
665 | return -EINVAL; \ | |
666 | } \ | |
667 | ret = se_dev_set_##_name(dev, (u32)val); \ | |
668 | spin_unlock(&se_dev->se_dev_lock); \ | |
669 | \ | |
670 | return (!ret) ? count : -EINVAL; \ | |
671 | } | |
672 | ||
673 | #define DEF_DEV_ATTRIB(_name) \ | |
674 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
675 | DEF_DEV_ATTRIB_STORE(_name); | |
676 | ||
677 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
678 | DEF_DEV_ATTRIB_SHOW(_name); | |
679 | ||
680 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
681 | #define SE_DEV_ATTR(_name, _mode) \ | |
682 | static struct target_core_dev_attrib_attribute \ | |
683 | target_core_dev_attrib_##_name = \ | |
684 | __CONFIGFS_EATTR(_name, _mode, \ | |
685 | target_core_dev_show_attr_##_name, \ | |
686 | target_core_dev_store_attr_##_name); | |
687 | ||
688 | #define SE_DEV_ATTR_RO(_name); \ | |
689 | static struct target_core_dev_attrib_attribute \ | |
690 | target_core_dev_attrib_##_name = \ | |
691 | __CONFIGFS_EATTR_RO(_name, \ | |
692 | target_core_dev_show_attr_##_name); | |
693 | ||
694 | DEF_DEV_ATTRIB(emulate_dpo); | |
695 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
696 | ||
697 | DEF_DEV_ATTRIB(emulate_fua_write); | |
698 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
699 | ||
700 | DEF_DEV_ATTRIB(emulate_fua_read); | |
701 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
702 | ||
703 | DEF_DEV_ATTRIB(emulate_write_cache); | |
704 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
705 | ||
706 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
707 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
708 | ||
709 | DEF_DEV_ATTRIB(emulate_tas); | |
710 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
711 | ||
712 | DEF_DEV_ATTRIB(emulate_tpu); | |
713 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
714 | ||
715 | DEF_DEV_ATTRIB(emulate_tpws); | |
716 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
717 | ||
718 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
719 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
720 | ||
721 | DEF_DEV_ATTRIB_RO(hw_block_size); | |
722 | SE_DEV_ATTR_RO(hw_block_size); | |
723 | ||
724 | DEF_DEV_ATTRIB(block_size); | |
725 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
726 | ||
727 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
728 | SE_DEV_ATTR_RO(hw_max_sectors); | |
729 | ||
730 | DEF_DEV_ATTRIB(max_sectors); | |
731 | SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); | |
732 | ||
733 | DEF_DEV_ATTRIB(optimal_sectors); | |
734 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
735 | ||
736 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
737 | SE_DEV_ATTR_RO(hw_queue_depth); | |
738 | ||
739 | DEF_DEV_ATTRIB(queue_depth); | |
740 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
741 | ||
742 | DEF_DEV_ATTRIB(task_timeout); | |
743 | SE_DEV_ATTR(task_timeout, S_IRUGO | S_IWUSR); | |
744 | ||
745 | DEF_DEV_ATTRIB(max_unmap_lba_count); | |
746 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
747 | ||
748 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
749 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
750 | ||
751 | DEF_DEV_ATTRIB(unmap_granularity); | |
752 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
753 | ||
754 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
755 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
756 | ||
757 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
758 | ||
759 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
760 | &target_core_dev_attrib_emulate_dpo.attr, | |
761 | &target_core_dev_attrib_emulate_fua_write.attr, | |
762 | &target_core_dev_attrib_emulate_fua_read.attr, | |
763 | &target_core_dev_attrib_emulate_write_cache.attr, | |
764 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
765 | &target_core_dev_attrib_emulate_tas.attr, | |
766 | &target_core_dev_attrib_emulate_tpu.attr, | |
767 | &target_core_dev_attrib_emulate_tpws.attr, | |
768 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
769 | &target_core_dev_attrib_hw_block_size.attr, | |
770 | &target_core_dev_attrib_block_size.attr, | |
771 | &target_core_dev_attrib_hw_max_sectors.attr, | |
772 | &target_core_dev_attrib_max_sectors.attr, | |
773 | &target_core_dev_attrib_optimal_sectors.attr, | |
774 | &target_core_dev_attrib_hw_queue_depth.attr, | |
775 | &target_core_dev_attrib_queue_depth.attr, | |
776 | &target_core_dev_attrib_task_timeout.attr, | |
777 | &target_core_dev_attrib_max_unmap_lba_count.attr, | |
778 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
779 | &target_core_dev_attrib_unmap_granularity.attr, | |
780 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
781 | NULL, | |
782 | }; | |
783 | ||
784 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
785 | .show_attribute = target_core_dev_attrib_attr_show, | |
786 | .store_attribute = target_core_dev_attrib_attr_store, | |
787 | }; | |
788 | ||
789 | static struct config_item_type target_core_dev_attrib_cit = { | |
790 | .ct_item_ops = &target_core_dev_attrib_ops, | |
791 | .ct_attrs = target_core_dev_attrib_attrs, | |
792 | .ct_owner = THIS_MODULE, | |
793 | }; | |
794 | ||
795 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
796 | ||
797 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
798 | ||
799 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
800 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
801 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
802 | __CONFIGFS_EATTR(_name, _mode, \ | |
803 | target_core_dev_wwn_show_attr_##_name, \ | |
804 | target_core_dev_wwn_store_attr_##_name); | |
805 | ||
806 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
807 | do { \ | |
808 | static struct target_core_dev_wwn_attribute \ | |
809 | target_core_dev_wwn_##_name = \ | |
810 | __CONFIGFS_EATTR_RO(_name, \ | |
811 | target_core_dev_wwn_show_attr_##_name); \ | |
812 | } while (0); | |
813 | ||
814 | /* | |
815 | * VPD page 0x80 Unit serial | |
816 | */ | |
817 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
818 | struct t10_wwn *t10_wwn, | |
819 | char *page) | |
820 | { | |
821 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
822 | struct se_device *dev; | |
823 | ||
824 | dev = se_dev->se_dev_ptr; | |
825 | if (!(dev)) | |
826 | return -ENODEV; | |
827 | ||
828 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", | |
829 | &t10_wwn->unit_serial[0]); | |
830 | } | |
831 | ||
832 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
833 | struct t10_wwn *t10_wwn, | |
834 | const char *page, | |
835 | size_t count) | |
836 | { | |
837 | struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; | |
838 | struct se_device *dev; | |
839 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; | |
840 | ||
841 | /* | |
842 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
843 | * from the struct scsi_device level firmware, do not allow | |
844 | * VPD Unit Serial to be emulated. | |
845 | * | |
846 | * Note this struct scsi_device could also be emulating VPD | |
847 | * information from its drivers/scsi LLD. But for now we assume | |
848 | * it is doing 'the right thing' wrt a world wide unique | |
849 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
850 | */ | |
851 | if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { | |
852 | printk(KERN_ERR "Underlying SCSI device firmware provided VPD" | |
853 | " Unit Serial, ignoring request\n"); | |
854 | return -EOPNOTSUPP; | |
855 | } | |
856 | ||
857 | if ((strlen(page) + 1) > INQUIRY_VPD_SERIAL_LEN) { | |
858 | printk(KERN_ERR "Emulated VPD Unit Serial exceeds" | |
859 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); | |
860 | return -EOVERFLOW; | |
861 | } | |
862 | /* | |
863 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
864 | * do exist, fail here as changing this information on the fly | |
865 | * (underneath the initiator side OS dependent multipath code) | |
866 | * could cause negative effects. | |
867 | */ | |
868 | dev = su_dev->se_dev_ptr; | |
869 | if ((dev)) { | |
870 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
871 | printk(KERN_ERR "Unable to set VPD Unit Serial while" | |
872 | " active %d $FABRIC_MOD exports exist\n", | |
873 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
874 | return -EINVAL; | |
875 | } | |
876 | } | |
877 | /* | |
878 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
879 | * | |
880 | * Also, strip any newline added from the userspace | |
881 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
882 | */ | |
883 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
884 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
885 | snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, | |
886 | "%s", strstrip(buf)); | |
887 | su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; | |
888 | ||
889 | printk(KERN_INFO "Target_Core_ConfigFS: Set emulated VPD Unit Serial:" | |
890 | " %s\n", su_dev->t10_wwn.unit_serial); | |
891 | ||
892 | return count; | |
893 | } | |
894 | ||
895 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
896 | ||
897 | /* | |
898 | * VPD page 0x83 Protocol Identifier | |
899 | */ | |
900 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
901 | struct t10_wwn *t10_wwn, | |
902 | char *page) | |
903 | { | |
904 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
905 | struct se_device *dev; | |
906 | struct t10_vpd *vpd; | |
907 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
908 | ssize_t len = 0; | |
909 | ||
910 | dev = se_dev->se_dev_ptr; | |
911 | if (!(dev)) | |
912 | return -ENODEV; | |
913 | ||
914 | memset(buf, 0, VPD_TMP_BUF_SIZE); | |
915 | ||
916 | spin_lock(&t10_wwn->t10_vpd_lock); | |
917 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
918 | if (!(vpd->protocol_identifier_set)) | |
919 | continue; | |
920 | ||
921 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
922 | ||
923 | if ((len + strlen(buf) > PAGE_SIZE)) | |
924 | break; | |
925 | ||
926 | len += sprintf(page+len, "%s", buf); | |
927 | } | |
928 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
929 | ||
930 | return len; | |
931 | } | |
932 | ||
933 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
934 | struct t10_wwn *t10_wwn, | |
935 | const char *page, | |
936 | size_t count) | |
937 | { | |
938 | return -ENOSYS; | |
939 | } | |
940 | ||
941 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
942 | ||
943 | /* | |
944 | * Generic wrapper for dumping VPD identifiers by association. | |
945 | */ | |
946 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
947 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
948 | struct t10_wwn *t10_wwn, \ | |
949 | char *page) \ | |
950 | { \ | |
951 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ | |
952 | struct se_device *dev; \ | |
953 | struct t10_vpd *vpd; \ | |
954 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
955 | ssize_t len = 0; \ | |
956 | \ | |
957 | dev = se_dev->se_dev_ptr; \ | |
958 | if (!(dev)) \ | |
959 | return -ENODEV; \ | |
960 | \ | |
961 | spin_lock(&t10_wwn->t10_vpd_lock); \ | |
962 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
963 | if (vpd->association != _assoc) \ | |
964 | continue; \ | |
965 | \ | |
966 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
967 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
968 | if ((len + strlen(buf) > PAGE_SIZE)) \ | |
969 | break; \ | |
970 | len += sprintf(page+len, "%s", buf); \ | |
971 | \ | |
972 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
973 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
974 | if ((len + strlen(buf) > PAGE_SIZE)) \ | |
975 | break; \ | |
976 | len += sprintf(page+len, "%s", buf); \ | |
977 | \ | |
978 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
979 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
980 | if ((len + strlen(buf) > PAGE_SIZE)) \ | |
981 | break; \ | |
982 | len += sprintf(page+len, "%s", buf); \ | |
983 | } \ | |
984 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
985 | \ | |
986 | return len; \ | |
987 | } | |
988 | ||
989 | /* | |
990 | * VPD page 0x83 Assoication: Logical Unit | |
991 | */ | |
992 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
993 | ||
994 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
995 | struct t10_wwn *t10_wwn, | |
996 | const char *page, | |
997 | size_t count) | |
998 | { | |
999 | return -ENOSYS; | |
1000 | } | |
1001 | ||
1002 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
1003 | ||
1004 | /* | |
1005 | * VPD page 0x83 Association: Target Port | |
1006 | */ | |
1007 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
1008 | ||
1009 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
1010 | struct t10_wwn *t10_wwn, | |
1011 | const char *page, | |
1012 | size_t count) | |
1013 | { | |
1014 | return -ENOSYS; | |
1015 | } | |
1016 | ||
1017 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
1018 | ||
1019 | /* | |
1020 | * VPD page 0x83 Association: SCSI Target Device | |
1021 | */ | |
1022 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
1023 | ||
1024 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
1025 | struct t10_wwn *t10_wwn, | |
1026 | const char *page, | |
1027 | size_t count) | |
1028 | { | |
1029 | return -ENOSYS; | |
1030 | } | |
1031 | ||
1032 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
1033 | ||
1034 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
1035 | ||
1036 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
1037 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
1038 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
1039 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
1040 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
1041 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1042 | NULL, | |
1043 | }; | |
1044 | ||
1045 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1046 | .show_attribute = target_core_dev_wwn_attr_show, | |
1047 | .store_attribute = target_core_dev_wwn_attr_store, | |
1048 | }; | |
1049 | ||
1050 | static struct config_item_type target_core_dev_wwn_cit = { | |
1051 | .ct_item_ops = &target_core_dev_wwn_ops, | |
1052 | .ct_attrs = target_core_dev_wwn_attrs, | |
1053 | .ct_owner = THIS_MODULE, | |
1054 | }; | |
1055 | ||
1056 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
1057 | ||
1058 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
1059 | ||
1060 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); | |
1061 | #define SE_DEV_PR_ATTR(_name, _mode) \ | |
1062 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1063 | __CONFIGFS_EATTR(_name, _mode, \ | |
1064 | target_core_dev_pr_show_attr_##_name, \ | |
1065 | target_core_dev_pr_store_attr_##_name); | |
1066 | ||
1067 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1068 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1069 | __CONFIGFS_EATTR_RO(_name, \ | |
1070 | target_core_dev_pr_show_attr_##_name); | |
1071 | ||
1072 | /* | |
1073 | * res_holder | |
1074 | */ | |
1075 | static ssize_t target_core_dev_pr_show_spc3_res( | |
1076 | struct se_device *dev, | |
1077 | char *page, | |
1078 | ssize_t *len) | |
1079 | { | |
1080 | struct se_node_acl *se_nacl; | |
1081 | struct t10_pr_registration *pr_reg; | |
1082 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1083 | int prf_isid; | |
1084 | ||
1085 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1086 | ||
1087 | spin_lock(&dev->dev_reservation_lock); | |
1088 | pr_reg = dev->dev_pr_res_holder; | |
1089 | if (!(pr_reg)) { | |
1090 | *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); | |
1091 | spin_unlock(&dev->dev_reservation_lock); | |
1092 | return *len; | |
1093 | } | |
1094 | se_nacl = pr_reg->pr_reg_nacl; | |
1095 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1096 | PR_REG_ISID_ID_LEN); | |
1097 | ||
1098 | *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", | |
1099 | TPG_TFO(se_nacl->se_tpg)->get_fabric_name(), | |
1100 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); | |
1101 | spin_unlock(&dev->dev_reservation_lock); | |
1102 | ||
1103 | return *len; | |
1104 | } | |
1105 | ||
1106 | static ssize_t target_core_dev_pr_show_spc2_res( | |
1107 | struct se_device *dev, | |
1108 | char *page, | |
1109 | ssize_t *len) | |
1110 | { | |
1111 | struct se_node_acl *se_nacl; | |
1112 | ||
1113 | spin_lock(&dev->dev_reservation_lock); | |
1114 | se_nacl = dev->dev_reserved_node_acl; | |
1115 | if (!(se_nacl)) { | |
1116 | *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); | |
1117 | spin_unlock(&dev->dev_reservation_lock); | |
1118 | return *len; | |
1119 | } | |
1120 | *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", | |
1121 | TPG_TFO(se_nacl->se_tpg)->get_fabric_name(), | |
1122 | se_nacl->initiatorname); | |
1123 | spin_unlock(&dev->dev_reservation_lock); | |
1124 | ||
1125 | return *len; | |
1126 | } | |
1127 | ||
1128 | static ssize_t target_core_dev_pr_show_attr_res_holder( | |
1129 | struct se_subsystem_dev *su_dev, | |
1130 | char *page) | |
1131 | { | |
1132 | ssize_t len = 0; | |
1133 | ||
1134 | if (!(su_dev->se_dev_ptr)) | |
1135 | return -ENODEV; | |
1136 | ||
1137 | switch (T10_RES(su_dev)->res_type) { | |
1138 | case SPC3_PERSISTENT_RESERVATIONS: | |
1139 | target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, | |
1140 | page, &len); | |
1141 | break; | |
1142 | case SPC2_RESERVATIONS: | |
1143 | target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, | |
1144 | page, &len); | |
1145 | break; | |
1146 | case SPC_PASSTHROUGH: | |
1147 | len += sprintf(page+len, "Passthrough\n"); | |
1148 | break; | |
1149 | default: | |
1150 | len += sprintf(page+len, "Unknown\n"); | |
1151 | break; | |
1152 | } | |
1153 | ||
1154 | return len; | |
1155 | } | |
1156 | ||
1157 | SE_DEV_PR_ATTR_RO(res_holder); | |
1158 | ||
1159 | /* | |
1160 | * res_pr_all_tgt_pts | |
1161 | */ | |
1162 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( | |
1163 | struct se_subsystem_dev *su_dev, | |
1164 | char *page) | |
1165 | { | |
1166 | struct se_device *dev; | |
1167 | struct t10_pr_registration *pr_reg; | |
1168 | ssize_t len = 0; | |
1169 | ||
1170 | dev = su_dev->se_dev_ptr; | |
1171 | if (!(dev)) | |
1172 | return -ENODEV; | |
1173 | ||
1174 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1175 | return len; | |
1176 | ||
1177 | spin_lock(&dev->dev_reservation_lock); | |
1178 | pr_reg = dev->dev_pr_res_holder; | |
1179 | if (!(pr_reg)) { | |
1180 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1181 | spin_unlock(&dev->dev_reservation_lock); | |
1182 | return len; | |
1183 | } | |
1184 | /* | |
1185 | * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 | |
1186 | * Basic PERSISTENT RESERVER OUT parameter list, page 290 | |
1187 | */ | |
1188 | if (pr_reg->pr_reg_all_tg_pt) | |
1189 | len = sprintf(page, "SPC-3 Reservation: All Target" | |
1190 | " Ports registration\n"); | |
1191 | else | |
1192 | len = sprintf(page, "SPC-3 Reservation: Single" | |
1193 | " Target Port registration\n"); | |
1194 | spin_unlock(&dev->dev_reservation_lock); | |
1195 | ||
1196 | return len; | |
1197 | } | |
1198 | ||
1199 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1200 | ||
1201 | /* | |
1202 | * res_pr_generation | |
1203 | */ | |
1204 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( | |
1205 | struct se_subsystem_dev *su_dev, | |
1206 | char *page) | |
1207 | { | |
1208 | if (!(su_dev->se_dev_ptr)) | |
1209 | return -ENODEV; | |
1210 | ||
1211 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1212 | return 0; | |
1213 | ||
1214 | return sprintf(page, "0x%08x\n", T10_RES(su_dev)->pr_generation); | |
1215 | } | |
1216 | ||
1217 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1218 | ||
1219 | /* | |
1220 | * res_pr_holder_tg_port | |
1221 | */ | |
1222 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
1223 | struct se_subsystem_dev *su_dev, | |
1224 | char *page) | |
1225 | { | |
1226 | struct se_device *dev; | |
1227 | struct se_node_acl *se_nacl; | |
1228 | struct se_lun *lun; | |
1229 | struct se_portal_group *se_tpg; | |
1230 | struct t10_pr_registration *pr_reg; | |
1231 | struct target_core_fabric_ops *tfo; | |
1232 | ssize_t len = 0; | |
1233 | ||
1234 | dev = su_dev->se_dev_ptr; | |
1235 | if (!(dev)) | |
1236 | return -ENODEV; | |
1237 | ||
1238 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1239 | return len; | |
1240 | ||
1241 | spin_lock(&dev->dev_reservation_lock); | |
1242 | pr_reg = dev->dev_pr_res_holder; | |
1243 | if (!(pr_reg)) { | |
1244 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1245 | spin_unlock(&dev->dev_reservation_lock); | |
1246 | return len; | |
1247 | } | |
1248 | se_nacl = pr_reg->pr_reg_nacl; | |
1249 | se_tpg = se_nacl->se_tpg; | |
1250 | lun = pr_reg->pr_reg_tg_pt_lun; | |
1251 | tfo = TPG_TFO(se_tpg); | |
1252 | ||
1253 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1254 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1255 | tfo->tpg_get_wwn(se_tpg)); | |
1256 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
1257 | " Identifer Tag: %hu %s Portal Group Tag: %hu" | |
1258 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, | |
1259 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1260 | tfo->get_fabric_name(), lun->unpacked_lun); | |
1261 | spin_unlock(&dev->dev_reservation_lock); | |
1262 | ||
1263 | return len; | |
1264 | } | |
1265 | ||
1266 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1267 | ||
1268 | /* | |
1269 | * res_pr_registered_i_pts | |
1270 | */ | |
1271 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( | |
1272 | struct se_subsystem_dev *su_dev, | |
1273 | char *page) | |
1274 | { | |
1275 | struct target_core_fabric_ops *tfo; | |
1276 | struct t10_pr_registration *pr_reg; | |
1277 | unsigned char buf[384]; | |
1278 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1279 | ssize_t len = 0; | |
1280 | int reg_count = 0, prf_isid; | |
1281 | ||
1282 | if (!(su_dev->se_dev_ptr)) | |
1283 | return -ENODEV; | |
1284 | ||
1285 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1286 | return len; | |
1287 | ||
1288 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); | |
1289 | ||
1290 | spin_lock(&T10_RES(su_dev)->registration_lock); | |
1291 | list_for_each_entry(pr_reg, &T10_RES(su_dev)->registration_list, | |
1292 | pr_reg_list) { | |
1293 | ||
1294 | memset(buf, 0, 384); | |
1295 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1296 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1297 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1298 | PR_REG_ISID_ID_LEN); | |
1299 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1300 | tfo->get_fabric_name(), | |
1301 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1302 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1303 | pr_reg->pr_res_generation); | |
1304 | ||
1305 | if ((len + strlen(buf) > PAGE_SIZE)) | |
1306 | break; | |
1307 | ||
1308 | len += sprintf(page+len, "%s", buf); | |
1309 | reg_count++; | |
1310 | } | |
1311 | spin_unlock(&T10_RES(su_dev)->registration_lock); | |
1312 | ||
1313 | if (!(reg_count)) | |
1314 | len += sprintf(page+len, "None\n"); | |
1315 | ||
1316 | return len; | |
1317 | } | |
1318 | ||
1319 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1320 | ||
1321 | /* | |
1322 | * res_pr_type | |
1323 | */ | |
1324 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( | |
1325 | struct se_subsystem_dev *su_dev, | |
1326 | char *page) | |
1327 | { | |
1328 | struct se_device *dev; | |
1329 | struct t10_pr_registration *pr_reg; | |
1330 | ssize_t len = 0; | |
1331 | ||
1332 | dev = su_dev->se_dev_ptr; | |
1333 | if (!(dev)) | |
1334 | return -ENODEV; | |
1335 | ||
1336 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1337 | return len; | |
1338 | ||
1339 | spin_lock(&dev->dev_reservation_lock); | |
1340 | pr_reg = dev->dev_pr_res_holder; | |
1341 | if (!(pr_reg)) { | |
1342 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1343 | spin_unlock(&dev->dev_reservation_lock); | |
1344 | return len; | |
1345 | } | |
1346 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1347 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1348 | spin_unlock(&dev->dev_reservation_lock); | |
1349 | ||
1350 | return len; | |
1351 | } | |
1352 | ||
1353 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1354 | ||
1355 | /* | |
1356 | * res_type | |
1357 | */ | |
1358 | static ssize_t target_core_dev_pr_show_attr_res_type( | |
1359 | struct se_subsystem_dev *su_dev, | |
1360 | char *page) | |
1361 | { | |
1362 | ssize_t len = 0; | |
1363 | ||
1364 | if (!(su_dev->se_dev_ptr)) | |
1365 | return -ENODEV; | |
1366 | ||
1367 | switch (T10_RES(su_dev)->res_type) { | |
1368 | case SPC3_PERSISTENT_RESERVATIONS: | |
1369 | len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
1370 | break; | |
1371 | case SPC2_RESERVATIONS: | |
1372 | len = sprintf(page, "SPC2_RESERVATIONS\n"); | |
1373 | break; | |
1374 | case SPC_PASSTHROUGH: | |
1375 | len = sprintf(page, "SPC_PASSTHROUGH\n"); | |
1376 | break; | |
1377 | default: | |
1378 | len = sprintf(page, "UNKNOWN\n"); | |
1379 | break; | |
1380 | } | |
1381 | ||
1382 | return len; | |
1383 | } | |
1384 | ||
1385 | SE_DEV_PR_ATTR_RO(res_type); | |
1386 | ||
1387 | /* | |
1388 | * res_aptpl_active | |
1389 | */ | |
1390 | ||
1391 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( | |
1392 | struct se_subsystem_dev *su_dev, | |
1393 | char *page) | |
1394 | { | |
1395 | if (!(su_dev->se_dev_ptr)) | |
1396 | return -ENODEV; | |
1397 | ||
1398 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1399 | return 0; | |
1400 | ||
1401 | return sprintf(page, "APTPL Bit Status: %s\n", | |
1402 | (T10_RES(su_dev)->pr_aptpl_active) ? "Activated" : "Disabled"); | |
1403 | } | |
1404 | ||
1405 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1406 | ||
1407 | /* | |
1408 | * res_aptpl_metadata | |
1409 | */ | |
1410 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
1411 | struct se_subsystem_dev *su_dev, | |
1412 | char *page) | |
1413 | { | |
1414 | if (!(su_dev->se_dev_ptr)) | |
1415 | return -ENODEV; | |
1416 | ||
1417 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1418 | return 0; | |
1419 | ||
1420 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1421 | } | |
1422 | ||
1423 | enum { | |
1424 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1425 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1426 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1427 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1428 | }; | |
1429 | ||
1430 | static match_table_t tokens = { | |
1431 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1432 | {Opt_initiator_node, "initiator_node=%s"}, | |
1433 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1434 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1435 | {Opt_res_holder, "res_holder=%d"}, | |
1436 | {Opt_res_type, "res_type=%d"}, | |
1437 | {Opt_res_scope, "res_scope=%d"}, | |
1438 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1439 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1440 | {Opt_target_fabric, "target_fabric=%s"}, | |
1441 | {Opt_target_node, "target_node=%s"}, | |
1442 | {Opt_tpgt, "tpgt=%d"}, | |
1443 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1444 | {Opt_target_lun, "target_lun=%d"}, | |
1445 | {Opt_err, NULL} | |
1446 | }; | |
1447 | ||
1448 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
1449 | struct se_subsystem_dev *su_dev, | |
1450 | const char *page, | |
1451 | size_t count) | |
1452 | { | |
1453 | struct se_device *dev; | |
1454 | unsigned char *i_fabric, *t_fabric, *i_port = NULL, *t_port = NULL; | |
1455 | unsigned char *isid = NULL; | |
1456 | char *orig, *ptr, *arg_p, *opts; | |
1457 | substring_t args[MAX_OPT_ARGS]; | |
1458 | unsigned long long tmp_ll; | |
1459 | u64 sa_res_key = 0; | |
1460 | u32 mapped_lun = 0, target_lun = 0; | |
1461 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1462 | u16 port_rpti = 0, tpgt = 0; | |
1463 | u8 type = 0, scope; | |
1464 | ||
1465 | dev = su_dev->se_dev_ptr; | |
1466 | if (!(dev)) | |
1467 | return -ENODEV; | |
1468 | ||
1469 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1470 | return 0; | |
1471 | ||
1472 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1473 | printk(KERN_INFO "Unable to process APTPL metadata while" | |
1474 | " active fabric exports exist\n"); | |
1475 | return -EINVAL; | |
1476 | } | |
1477 | ||
1478 | opts = kstrdup(page, GFP_KERNEL); | |
1479 | if (!opts) | |
1480 | return -ENOMEM; | |
1481 | ||
1482 | orig = opts; | |
1483 | while ((ptr = strsep(&opts, ",")) != NULL) { | |
1484 | if (!*ptr) | |
1485 | continue; | |
1486 | ||
1487 | token = match_token(ptr, tokens, args); | |
1488 | switch (token) { | |
1489 | case Opt_initiator_fabric: | |
1490 | i_fabric = match_strdup(&args[0]); | |
1491 | break; | |
1492 | case Opt_initiator_node: | |
1493 | i_port = match_strdup(&args[0]); | |
1494 | if (strlen(i_port) > PR_APTPL_MAX_IPORT_LEN) { | |
1495 | printk(KERN_ERR "APTPL metadata initiator_node=" | |
1496 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", | |
1497 | PR_APTPL_MAX_IPORT_LEN); | |
1498 | ret = -EINVAL; | |
1499 | break; | |
1500 | } | |
1501 | break; | |
1502 | case Opt_initiator_sid: | |
1503 | isid = match_strdup(&args[0]); | |
1504 | if (strlen(isid) > PR_REG_ISID_LEN) { | |
1505 | printk(KERN_ERR "APTPL metadata initiator_isid" | |
1506 | "= exceeds PR_REG_ISID_LEN: %d\n", | |
1507 | PR_REG_ISID_LEN); | |
1508 | ret = -EINVAL; | |
1509 | break; | |
1510 | } | |
1511 | break; | |
1512 | case Opt_sa_res_key: | |
1513 | arg_p = match_strdup(&args[0]); | |
1514 | ret = strict_strtoull(arg_p, 0, &tmp_ll); | |
1515 | if (ret < 0) { | |
1516 | printk(KERN_ERR "strict_strtoull() failed for" | |
1517 | " sa_res_key=\n"); | |
1518 | goto out; | |
1519 | } | |
1520 | sa_res_key = (u64)tmp_ll; | |
1521 | break; | |
1522 | /* | |
1523 | * PR APTPL Metadata for Reservation | |
1524 | */ | |
1525 | case Opt_res_holder: | |
1526 | match_int(args, &arg); | |
1527 | res_holder = arg; | |
1528 | break; | |
1529 | case Opt_res_type: | |
1530 | match_int(args, &arg); | |
1531 | type = (u8)arg; | |
1532 | break; | |
1533 | case Opt_res_scope: | |
1534 | match_int(args, &arg); | |
1535 | scope = (u8)arg; | |
1536 | break; | |
1537 | case Opt_res_all_tg_pt: | |
1538 | match_int(args, &arg); | |
1539 | all_tg_pt = (int)arg; | |
1540 | break; | |
1541 | case Opt_mapped_lun: | |
1542 | match_int(args, &arg); | |
1543 | mapped_lun = (u32)arg; | |
1544 | break; | |
1545 | /* | |
1546 | * PR APTPL Metadata for Target Port | |
1547 | */ | |
1548 | case Opt_target_fabric: | |
1549 | t_fabric = match_strdup(&args[0]); | |
1550 | break; | |
1551 | case Opt_target_node: | |
1552 | t_port = match_strdup(&args[0]); | |
1553 | if (strlen(t_port) > PR_APTPL_MAX_TPORT_LEN) { | |
1554 | printk(KERN_ERR "APTPL metadata target_node=" | |
1555 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", | |
1556 | PR_APTPL_MAX_TPORT_LEN); | |
1557 | ret = -EINVAL; | |
1558 | break; | |
1559 | } | |
1560 | break; | |
1561 | case Opt_tpgt: | |
1562 | match_int(args, &arg); | |
1563 | tpgt = (u16)arg; | |
1564 | break; | |
1565 | case Opt_port_rtpi: | |
1566 | match_int(args, &arg); | |
1567 | port_rpti = (u16)arg; | |
1568 | break; | |
1569 | case Opt_target_lun: | |
1570 | match_int(args, &arg); | |
1571 | target_lun = (u32)arg; | |
1572 | break; | |
1573 | default: | |
1574 | break; | |
1575 | } | |
1576 | } | |
1577 | ||
1578 | if (!(i_port) || !(t_port) || !(sa_res_key)) { | |
1579 | printk(KERN_ERR "Illegal parameters for APTPL registration\n"); | |
1580 | ret = -EINVAL; | |
1581 | goto out; | |
1582 | } | |
1583 | ||
1584 | if (res_holder && !(type)) { | |
1585 | printk(KERN_ERR "Illegal PR type: 0x%02x for reservation" | |
1586 | " holder\n", type); | |
1587 | ret = -EINVAL; | |
1588 | goto out; | |
1589 | } | |
1590 | ||
1591 | ret = core_scsi3_alloc_aptpl_registration(T10_RES(su_dev), sa_res_key, | |
1592 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, | |
1593 | res_holder, all_tg_pt, type); | |
1594 | out: | |
1595 | kfree(orig); | |
1596 | return (ret == 0) ? count : ret; | |
1597 | } | |
1598 | ||
1599 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1600 | ||
1601 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); | |
1602 | ||
1603 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1604 | &target_core_dev_pr_res_holder.attr, | |
1605 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1606 | &target_core_dev_pr_res_pr_generation.attr, | |
1607 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1608 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1609 | &target_core_dev_pr_res_pr_type.attr, | |
1610 | &target_core_dev_pr_res_type.attr, | |
1611 | &target_core_dev_pr_res_aptpl_active.attr, | |
1612 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1613 | NULL, | |
1614 | }; | |
1615 | ||
1616 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1617 | .show_attribute = target_core_dev_pr_attr_show, | |
1618 | .store_attribute = target_core_dev_pr_attr_store, | |
1619 | }; | |
1620 | ||
1621 | static struct config_item_type target_core_dev_pr_cit = { | |
1622 | .ct_item_ops = &target_core_dev_pr_ops, | |
1623 | .ct_attrs = target_core_dev_pr_attrs, | |
1624 | .ct_owner = THIS_MODULE, | |
1625 | }; | |
1626 | ||
1627 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1628 | ||
1629 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1630 | ||
1631 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1632 | { | |
1633 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1634 | struct se_hba *hba = se_dev->se_dev_hba; | |
1635 | struct se_subsystem_api *t = hba->transport; | |
1636 | int bl = 0; | |
1637 | ssize_t read_bytes = 0; | |
1638 | ||
1639 | if (!(se_dev->se_dev_ptr)) | |
1640 | return -ENODEV; | |
1641 | ||
1642 | transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); | |
1643 | read_bytes += bl; | |
1644 | read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); | |
1645 | return read_bytes; | |
1646 | } | |
1647 | ||
1648 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1649 | .attr = { .ca_owner = THIS_MODULE, | |
1650 | .ca_name = "info", | |
1651 | .ca_mode = S_IRUGO }, | |
1652 | .show = target_core_show_dev_info, | |
1653 | .store = NULL, | |
1654 | }; | |
1655 | ||
1656 | static ssize_t target_core_store_dev_control( | |
1657 | void *p, | |
1658 | const char *page, | |
1659 | size_t count) | |
1660 | { | |
1661 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1662 | struct se_hba *hba = se_dev->se_dev_hba; | |
1663 | struct se_subsystem_api *t = hba->transport; | |
1664 | ||
1665 | if (!(se_dev->se_dev_su_ptr)) { | |
1666 | printk(KERN_ERR "Unable to locate struct se_subsystem_dev>se" | |
1667 | "_dev_su_ptr\n"); | |
1668 | return -EINVAL; | |
1669 | } | |
1670 | ||
1671 | return t->set_configfs_dev_params(hba, se_dev, page, count); | |
1672 | } | |
1673 | ||
1674 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1675 | .attr = { .ca_owner = THIS_MODULE, | |
1676 | .ca_name = "control", | |
1677 | .ca_mode = S_IWUSR }, | |
1678 | .show = NULL, | |
1679 | .store = target_core_store_dev_control, | |
1680 | }; | |
1681 | ||
1682 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1683 | { | |
1684 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1685 | ||
1686 | if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) | |
1687 | return 0; | |
1688 | ||
1689 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); | |
1690 | } | |
1691 | ||
1692 | static ssize_t target_core_store_dev_alias( | |
1693 | void *p, | |
1694 | const char *page, | |
1695 | size_t count) | |
1696 | { | |
1697 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1698 | struct se_hba *hba = se_dev->se_dev_hba; | |
1699 | ssize_t read_bytes; | |
1700 | ||
1701 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
1702 | printk(KERN_ERR "alias count: %d exceeds" | |
1703 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, | |
1704 | SE_DEV_ALIAS_LEN-1); | |
1705 | return -EINVAL; | |
1706 | } | |
1707 | ||
1708 | se_dev->su_dev_flags |= SDF_USING_ALIAS; | |
1709 | read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, | |
1710 | "%s", page); | |
1711 | ||
1712 | printk(KERN_INFO "Target_Core_ConfigFS: %s/%s set alias: %s\n", | |
1713 | config_item_name(&hba->hba_group.cg_item), | |
1714 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1715 | se_dev->se_dev_alias); | |
1716 | ||
1717 | return read_bytes; | |
1718 | } | |
1719 | ||
1720 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1721 | .attr = { .ca_owner = THIS_MODULE, | |
1722 | .ca_name = "alias", | |
1723 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1724 | .show = target_core_show_dev_alias, | |
1725 | .store = target_core_store_dev_alias, | |
1726 | }; | |
1727 | ||
1728 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1729 | { | |
1730 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1731 | ||
1732 | if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) | |
1733 | return 0; | |
1734 | ||
1735 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); | |
1736 | } | |
1737 | ||
1738 | static ssize_t target_core_store_dev_udev_path( | |
1739 | void *p, | |
1740 | const char *page, | |
1741 | size_t count) | |
1742 | { | |
1743 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1744 | struct se_hba *hba = se_dev->se_dev_hba; | |
1745 | ssize_t read_bytes; | |
1746 | ||
1747 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
1748 | printk(KERN_ERR "udev_path count: %d exceeds" | |
1749 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, | |
1750 | SE_UDEV_PATH_LEN-1); | |
1751 | return -EINVAL; | |
1752 | } | |
1753 | ||
1754 | se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; | |
1755 | read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, | |
1756 | "%s", page); | |
1757 | ||
1758 | printk(KERN_INFO "Target_Core_ConfigFS: %s/%s set udev_path: %s\n", | |
1759 | config_item_name(&hba->hba_group.cg_item), | |
1760 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1761 | se_dev->se_dev_udev_path); | |
1762 | ||
1763 | return read_bytes; | |
1764 | } | |
1765 | ||
1766 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1767 | .attr = { .ca_owner = THIS_MODULE, | |
1768 | .ca_name = "udev_path", | |
1769 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1770 | .show = target_core_show_dev_udev_path, | |
1771 | .store = target_core_store_dev_udev_path, | |
1772 | }; | |
1773 | ||
1774 | static ssize_t target_core_store_dev_enable( | |
1775 | void *p, | |
1776 | const char *page, | |
1777 | size_t count) | |
1778 | { | |
1779 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1780 | struct se_device *dev; | |
1781 | struct se_hba *hba = se_dev->se_dev_hba; | |
1782 | struct se_subsystem_api *t = hba->transport; | |
1783 | char *ptr; | |
1784 | ||
1785 | ptr = strstr(page, "1"); | |
1786 | if (!(ptr)) { | |
1787 | printk(KERN_ERR "For dev_enable ops, only valid value" | |
1788 | " is \"1\"\n"); | |
1789 | return -EINVAL; | |
1790 | } | |
1791 | if ((se_dev->se_dev_ptr)) { | |
1792 | printk(KERN_ERR "se_dev->se_dev_ptr already set for storage" | |
1793 | " object\n"); | |
1794 | return -EEXIST; | |
1795 | } | |
1796 | ||
1797 | if (t->check_configfs_dev_params(hba, se_dev) < 0) | |
1798 | return -EINVAL; | |
1799 | ||
1800 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
1801 | if (!(dev) || IS_ERR(dev)) | |
1802 | return -EINVAL; | |
1803 | ||
1804 | se_dev->se_dev_ptr = dev; | |
1805 | printk(KERN_INFO "Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" | |
1806 | " %p\n", se_dev->se_dev_ptr); | |
1807 | ||
1808 | return count; | |
1809 | } | |
1810 | ||
1811 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1812 | .attr = { .ca_owner = THIS_MODULE, | |
1813 | .ca_name = "enable", | |
1814 | .ca_mode = S_IWUSR }, | |
1815 | .show = NULL, | |
1816 | .store = target_core_store_dev_enable, | |
1817 | }; | |
1818 | ||
1819 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1820 | { | |
1821 | struct se_device *dev; | |
1822 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1823 | struct config_item *lu_ci; | |
1824 | struct t10_alua_lu_gp *lu_gp; | |
1825 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1826 | ssize_t len = 0; | |
1827 | ||
1828 | dev = su_dev->se_dev_ptr; | |
1829 | if (!(dev)) | |
1830 | return -ENODEV; | |
1831 | ||
1832 | if (T10_ALUA(su_dev)->alua_type != SPC3_ALUA_EMULATED) | |
1833 | return len; | |
1834 | ||
1835 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
1836 | if (!(lu_gp_mem)) { | |
1837 | printk(KERN_ERR "NULL struct se_device->dev_alua_lu_gp_mem" | |
1838 | " pointer\n"); | |
1839 | return -EINVAL; | |
1840 | } | |
1841 | ||
1842 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1843 | lu_gp = lu_gp_mem->lu_gp; | |
1844 | if ((lu_gp)) { | |
1845 | lu_ci = &lu_gp->lu_gp_group.cg_item; | |
1846 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1847 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1848 | } | |
1849 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1850 | ||
1851 | return len; | |
1852 | } | |
1853 | ||
1854 | static ssize_t target_core_store_alua_lu_gp( | |
1855 | void *p, | |
1856 | const char *page, | |
1857 | size_t count) | |
1858 | { | |
1859 | struct se_device *dev; | |
1860 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1861 | struct se_hba *hba = su_dev->se_dev_hba; | |
1862 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; | |
1863 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1864 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1865 | int move = 0; | |
1866 | ||
1867 | dev = su_dev->se_dev_ptr; | |
1868 | if (!(dev)) | |
1869 | return -ENODEV; | |
1870 | ||
1871 | if (T10_ALUA(su_dev)->alua_type != SPC3_ALUA_EMULATED) { | |
1872 | printk(KERN_WARNING "SPC3_ALUA_EMULATED not enabled for %s/%s\n", | |
1873 | config_item_name(&hba->hba_group.cg_item), | |
1874 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
1875 | return -EINVAL; | |
1876 | } | |
1877 | if (count > LU_GROUP_NAME_BUF) { | |
1878 | printk(KERN_ERR "ALUA LU Group Alias too large!\n"); | |
1879 | return -EINVAL; | |
1880 | } | |
1881 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1882 | memcpy(buf, page, count); | |
1883 | /* | |
1884 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1885 | * making a new group association. | |
1886 | */ | |
1887 | if (strcmp(strstrip(buf), "NULL")) { | |
1888 | /* | |
1889 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1890 | * struct t10_alua_lu_gp. This reference is released with | |
1891 | * core_alua_get_lu_gp_by_name below(). | |
1892 | */ | |
1893 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
1894 | if (!(lu_gp_new)) | |
1895 | return -ENODEV; | |
1896 | } | |
1897 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
1898 | if (!(lu_gp_mem)) { | |
1899 | if (lu_gp_new) | |
1900 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1901 | printk(KERN_ERR "NULL struct se_device->dev_alua_lu_gp_mem" | |
1902 | " pointer\n"); | |
1903 | return -EINVAL; | |
1904 | } | |
1905 | ||
1906 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1907 | lu_gp = lu_gp_mem->lu_gp; | |
1908 | if ((lu_gp)) { | |
1909 | /* | |
1910 | * Clearing an existing lu_gp association, and replacing | |
1911 | * with NULL | |
1912 | */ | |
1913 | if (!(lu_gp_new)) { | |
1914 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing %s/%s" | |
1915 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" | |
1916 | " %hu\n", | |
1917 | config_item_name(&hba->hba_group.cg_item), | |
1918 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1919 | config_item_name(&lu_gp->lu_gp_group.cg_item), | |
1920 | lu_gp->lu_gp_id); | |
1921 | ||
1922 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1923 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1924 | ||
1925 | return count; | |
1926 | } | |
1927 | /* | |
1928 | * Removing existing association of lu_gp_mem with lu_gp | |
1929 | */ | |
1930 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1931 | move = 1; | |
1932 | } | |
1933 | /* | |
1934 | * Associate lu_gp_mem with lu_gp_new. | |
1935 | */ | |
1936 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1937 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1938 | ||
1939 | printk(KERN_INFO "Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" | |
1940 | " core/alua/lu_gps/%s, ID: %hu\n", | |
1941 | (move) ? "Moving" : "Adding", | |
1942 | config_item_name(&hba->hba_group.cg_item), | |
1943 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1944 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), | |
1945 | lu_gp_new->lu_gp_id); | |
1946 | ||
1947 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1948 | return count; | |
1949 | } | |
1950 | ||
1951 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1952 | .attr = { .ca_owner = THIS_MODULE, | |
1953 | .ca_name = "alua_lu_gp", | |
1954 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1955 | .show = target_core_show_alua_lu_gp, | |
1956 | .store = target_core_store_alua_lu_gp, | |
1957 | }; | |
1958 | ||
1959 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1960 | &target_core_attr_dev_info.attr, | |
1961 | &target_core_attr_dev_control.attr, | |
1962 | &target_core_attr_dev_alias.attr, | |
1963 | &target_core_attr_dev_udev_path.attr, | |
1964 | &target_core_attr_dev_enable.attr, | |
1965 | &target_core_attr_dev_alua_lu_gp.attr, | |
1966 | NULL, | |
1967 | }; | |
1968 | ||
1969 | static void target_core_dev_release(struct config_item *item) | |
1970 | { | |
1971 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
1972 | struct se_subsystem_dev, se_dev_group); | |
1f6fe7cb NB |
1973 | struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); |
1974 | struct se_subsystem_api *t = hba->transport; | |
1975 | struct config_group *dev_cg = &se_dev->se_dev_group; | |
c66ac9db | 1976 | |
c66ac9db | 1977 | kfree(dev_cg->default_groups); |
1f6fe7cb NB |
1978 | /* |
1979 | * This pointer will set when the storage is enabled with: | |
1980 | *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` | |
1981 | */ | |
1982 | if (se_dev->se_dev_ptr) { | |
1983 | printk(KERN_INFO "Target_Core_ConfigFS: Calling se_free_" | |
1984 | "virtual_device() for se_dev_ptr: %p\n", | |
1985 | se_dev->se_dev_ptr); | |
1986 | ||
1987 | se_free_virtual_device(se_dev->se_dev_ptr, hba); | |
1988 | } else { | |
1989 | /* | |
1990 | * Release struct se_subsystem_dev->se_dev_su_ptr.. | |
1991 | */ | |
1992 | printk(KERN_INFO "Target_Core_ConfigFS: Calling t->free_" | |
1993 | "device() for se_dev_su_ptr: %p\n", | |
1994 | se_dev->se_dev_su_ptr); | |
1995 | ||
1996 | t->free_device(se_dev->se_dev_su_ptr); | |
1997 | } | |
1998 | ||
1999 | printk(KERN_INFO "Target_Core_ConfigFS: Deallocating se_subsystem" | |
2000 | "_dev_t: %p\n", se_dev); | |
2001 | kfree(se_dev); | |
c66ac9db NB |
2002 | } |
2003 | ||
2004 | static ssize_t target_core_dev_show(struct config_item *item, | |
2005 | struct configfs_attribute *attr, | |
2006 | char *page) | |
2007 | { | |
2008 | struct se_subsystem_dev *se_dev = container_of( | |
2009 | to_config_group(item), struct se_subsystem_dev, | |
2010 | se_dev_group); | |
2011 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2012 | attr, struct target_core_configfs_attribute, attr); | |
2013 | ||
2014 | if (!(tc_attr->show)) | |
2015 | return -EINVAL; | |
2016 | ||
2017 | return tc_attr->show((void *)se_dev, page); | |
2018 | } | |
2019 | ||
2020 | static ssize_t target_core_dev_store(struct config_item *item, | |
2021 | struct configfs_attribute *attr, | |
2022 | const char *page, size_t count) | |
2023 | { | |
2024 | struct se_subsystem_dev *se_dev = container_of( | |
2025 | to_config_group(item), struct se_subsystem_dev, | |
2026 | se_dev_group); | |
2027 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2028 | attr, struct target_core_configfs_attribute, attr); | |
2029 | ||
2030 | if (!(tc_attr->store)) | |
2031 | return -EINVAL; | |
2032 | ||
2033 | return tc_attr->store((void *)se_dev, page, count); | |
2034 | } | |
2035 | ||
2036 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2037 | .release = target_core_dev_release, | |
2038 | .show_attribute = target_core_dev_show, | |
2039 | .store_attribute = target_core_dev_store, | |
2040 | }; | |
2041 | ||
2042 | static struct config_item_type target_core_dev_cit = { | |
2043 | .ct_item_ops = &target_core_dev_item_ops, | |
2044 | .ct_attrs = lio_core_dev_attrs, | |
2045 | .ct_owner = THIS_MODULE, | |
2046 | }; | |
2047 | ||
2048 | /* End functions for struct config_item_type target_core_dev_cit */ | |
2049 | ||
2050 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2051 | ||
2052 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2053 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2054 | static struct target_core_alua_lu_gp_attribute \ | |
2055 | target_core_alua_lu_gp_##_name = \ | |
2056 | __CONFIGFS_EATTR(_name, _mode, \ | |
2057 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2058 | target_core_alua_lu_gp_store_attr_##_name); | |
2059 | ||
2060 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2061 | static struct target_core_alua_lu_gp_attribute \ | |
2062 | target_core_alua_lu_gp_##_name = \ | |
2063 | __CONFIGFS_EATTR_RO(_name, \ | |
2064 | target_core_alua_lu_gp_show_attr_##_name); | |
2065 | ||
2066 | /* | |
2067 | * lu_gp_id | |
2068 | */ | |
2069 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2070 | struct t10_alua_lu_gp *lu_gp, | |
2071 | char *page) | |
2072 | { | |
2073 | if (!(lu_gp->lu_gp_valid_id)) | |
2074 | return 0; | |
2075 | ||
2076 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2077 | } | |
2078 | ||
2079 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2080 | struct t10_alua_lu_gp *lu_gp, | |
2081 | const char *page, | |
2082 | size_t count) | |
2083 | { | |
2084 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2085 | unsigned long lu_gp_id; | |
2086 | int ret; | |
2087 | ||
2088 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
2089 | if (ret < 0) { | |
2090 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
2091 | " lu_gp_id\n", ret); | |
2092 | return -EINVAL; | |
2093 | } | |
2094 | if (lu_gp_id > 0x0000ffff) { | |
2095 | printk(KERN_ERR "ALUA lu_gp_id: %lu exceeds maximum:" | |
2096 | " 0x0000ffff\n", lu_gp_id); | |
2097 | return -EINVAL; | |
2098 | } | |
2099 | ||
2100 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2101 | if (ret < 0) | |
2102 | return -EINVAL; | |
2103 | ||
2104 | printk(KERN_INFO "Target_Core_ConfigFS: Set ALUA Logical Unit" | |
2105 | " Group: core/alua/lu_gps/%s to ID: %hu\n", | |
2106 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2107 | lu_gp->lu_gp_id); | |
2108 | ||
2109 | return count; | |
2110 | } | |
2111 | ||
2112 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2113 | ||
2114 | /* | |
2115 | * members | |
2116 | */ | |
2117 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2118 | struct t10_alua_lu_gp *lu_gp, | |
2119 | char *page) | |
2120 | { | |
2121 | struct se_device *dev; | |
2122 | struct se_hba *hba; | |
2123 | struct se_subsystem_dev *su_dev; | |
2124 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2125 | ssize_t len = 0, cur_len; | |
2126 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2127 | ||
2128 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2129 | ||
2130 | spin_lock(&lu_gp->lu_gp_lock); | |
2131 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2132 | dev = lu_gp_mem->lu_gp_mem_dev; | |
2133 | su_dev = dev->se_sub_dev; | |
2134 | hba = su_dev->se_dev_hba; | |
2135 | ||
2136 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2137 | config_item_name(&hba->hba_group.cg_item), | |
2138 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
2139 | cur_len++; /* Extra byte for NULL terminator */ | |
2140 | ||
2141 | if ((cur_len + len) > PAGE_SIZE) { | |
2142 | printk(KERN_WARNING "Ran out of lu_gp_show_attr" | |
2143 | "_members buffer\n"); | |
2144 | break; | |
2145 | } | |
2146 | memcpy(page+len, buf, cur_len); | |
2147 | len += cur_len; | |
2148 | } | |
2149 | spin_unlock(&lu_gp->lu_gp_lock); | |
2150 | ||
2151 | return len; | |
2152 | } | |
2153 | ||
2154 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2155 | ||
2156 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2157 | ||
2158 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2159 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2160 | &target_core_alua_lu_gp_members.attr, | |
2161 | NULL, | |
2162 | }; | |
2163 | ||
1f6fe7cb NB |
2164 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2165 | { | |
2166 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2167 | struct t10_alua_lu_gp, lu_gp_group); | |
2168 | ||
2169 | core_alua_free_lu_gp(lu_gp); | |
2170 | } | |
2171 | ||
c66ac9db | 2172 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2173 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2174 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2175 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2176 | }; | |
2177 | ||
2178 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2179 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2180 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2181 | .ct_owner = THIS_MODULE, | |
2182 | }; | |
2183 | ||
2184 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2185 | ||
2186 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2187 | ||
2188 | static struct config_group *target_core_alua_create_lu_gp( | |
2189 | struct config_group *group, | |
2190 | const char *name) | |
2191 | { | |
2192 | struct t10_alua_lu_gp *lu_gp; | |
2193 | struct config_group *alua_lu_gp_cg = NULL; | |
2194 | struct config_item *alua_lu_gp_ci = NULL; | |
2195 | ||
2196 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2197 | if (IS_ERR(lu_gp)) | |
2198 | return NULL; | |
2199 | ||
2200 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2201 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2202 | ||
2203 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2204 | &target_core_alua_lu_gp_cit); | |
2205 | ||
2206 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated ALUA Logical Unit" | |
2207 | " Group: core/alua/lu_gps/%s\n", | |
2208 | config_item_name(alua_lu_gp_ci)); | |
2209 | ||
2210 | return alua_lu_gp_cg; | |
2211 | ||
2212 | } | |
2213 | ||
2214 | static void target_core_alua_drop_lu_gp( | |
2215 | struct config_group *group, | |
2216 | struct config_item *item) | |
2217 | { | |
2218 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2219 | struct t10_alua_lu_gp, lu_gp_group); | |
2220 | ||
2221 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing ALUA Logical Unit" | |
2222 | " Group: core/alua/lu_gps/%s, ID: %hu\n", | |
2223 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2224 | /* |
2225 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2226 | * -> target_core_alua_lu_gp_release() | |
2227 | */ | |
c66ac9db | 2228 | config_item_put(item); |
c66ac9db NB |
2229 | } |
2230 | ||
2231 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2232 | .make_group = &target_core_alua_create_lu_gp, | |
2233 | .drop_item = &target_core_alua_drop_lu_gp, | |
2234 | }; | |
2235 | ||
2236 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2237 | .ct_item_ops = NULL, | |
2238 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2239 | .ct_owner = THIS_MODULE, | |
2240 | }; | |
2241 | ||
2242 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2243 | ||
2244 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2245 | ||
2246 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2247 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2248 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2249 | target_core_alua_tg_pt_gp_##_name = \ | |
2250 | __CONFIGFS_EATTR(_name, _mode, \ | |
2251 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2252 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2253 | ||
2254 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2255 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2256 | target_core_alua_tg_pt_gp_##_name = \ | |
2257 | __CONFIGFS_EATTR_RO(_name, \ | |
2258 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2259 | ||
2260 | /* | |
2261 | * alua_access_state | |
2262 | */ | |
2263 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2264 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2265 | char *page) | |
2266 | { | |
2267 | return sprintf(page, "%d\n", | |
2268 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2269 | } | |
2270 | ||
2271 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2272 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2273 | const char *page, | |
2274 | size_t count) | |
2275 | { | |
2276 | struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; | |
2277 | unsigned long tmp; | |
2278 | int new_state, ret; | |
2279 | ||
2280 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) { | |
2281 | printk(KERN_ERR "Unable to do implict ALUA on non valid" | |
2282 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); | |
2283 | return -EINVAL; | |
2284 | } | |
2285 | ||
2286 | ret = strict_strtoul(page, 0, &tmp); | |
2287 | if (ret < 0) { | |
2288 | printk("Unable to extract new ALUA access state from" | |
2289 | " %s\n", page); | |
2290 | return -EINVAL; | |
2291 | } | |
2292 | new_state = (int)tmp; | |
2293 | ||
2294 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
2295 | printk(KERN_ERR "Unable to process implict configfs ALUA" | |
2296 | " transition while TPGS_IMPLICT_ALUA is diabled\n"); | |
2297 | return -EINVAL; | |
2298 | } | |
2299 | ||
2300 | ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, | |
2301 | NULL, NULL, new_state, 0); | |
2302 | return (!ret) ? count : -EINVAL; | |
2303 | } | |
2304 | ||
2305 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2306 | ||
2307 | /* | |
2308 | * alua_access_status | |
2309 | */ | |
2310 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2311 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2312 | char *page) | |
2313 | { | |
2314 | return sprintf(page, "%s\n", | |
2315 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2316 | } | |
2317 | ||
2318 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2319 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2320 | const char *page, | |
2321 | size_t count) | |
2322 | { | |
2323 | unsigned long tmp; | |
2324 | int new_status, ret; | |
2325 | ||
2326 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) { | |
2327 | printk(KERN_ERR "Unable to do set ALUA access status on non" | |
2328 | " valid tg_pt_gp ID: %hu\n", | |
2329 | tg_pt_gp->tg_pt_gp_valid_id); | |
2330 | return -EINVAL; | |
2331 | } | |
2332 | ||
2333 | ret = strict_strtoul(page, 0, &tmp); | |
2334 | if (ret < 0) { | |
2335 | printk(KERN_ERR "Unable to extract new ALUA access status" | |
2336 | " from %s\n", page); | |
2337 | return -EINVAL; | |
2338 | } | |
2339 | new_status = (int)tmp; | |
2340 | ||
2341 | if ((new_status != ALUA_STATUS_NONE) && | |
2342 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2343 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
2344 | printk(KERN_ERR "Illegal ALUA access status: 0x%02x\n", | |
2345 | new_status); | |
2346 | return -EINVAL; | |
2347 | } | |
2348 | ||
2349 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2350 | return count; | |
2351 | } | |
2352 | ||
2353 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2354 | ||
2355 | /* | |
2356 | * alua_access_type | |
2357 | */ | |
2358 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2359 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2360 | char *page) | |
2361 | { | |
2362 | return core_alua_show_access_type(tg_pt_gp, page); | |
2363 | } | |
2364 | ||
2365 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2366 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2367 | const char *page, | |
2368 | size_t count) | |
2369 | { | |
2370 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2371 | } | |
2372 | ||
2373 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2374 | ||
2375 | /* | |
2376 | * alua_write_metadata | |
2377 | */ | |
2378 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2379 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2380 | char *page) | |
2381 | { | |
2382 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2383 | } | |
2384 | ||
2385 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2386 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2387 | const char *page, | |
2388 | size_t count) | |
2389 | { | |
2390 | unsigned long tmp; | |
2391 | int ret; | |
2392 | ||
2393 | ret = strict_strtoul(page, 0, &tmp); | |
2394 | if (ret < 0) { | |
2395 | printk(KERN_ERR "Unable to extract alua_write_metadata\n"); | |
2396 | return -EINVAL; | |
2397 | } | |
2398 | ||
2399 | if ((tmp != 0) && (tmp != 1)) { | |
2400 | printk(KERN_ERR "Illegal value for alua_write_metadata:" | |
2401 | " %lu\n", tmp); | |
2402 | return -EINVAL; | |
2403 | } | |
2404 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2405 | ||
2406 | return count; | |
2407 | } | |
2408 | ||
2409 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2410 | ||
2411 | ||
2412 | ||
2413 | /* | |
2414 | * nonop_delay_msecs | |
2415 | */ | |
2416 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2417 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2418 | char *page) | |
2419 | { | |
2420 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2421 | ||
2422 | } | |
2423 | ||
2424 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2425 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2426 | const char *page, | |
2427 | size_t count) | |
2428 | { | |
2429 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2430 | } | |
2431 | ||
2432 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2433 | ||
2434 | /* | |
2435 | * trans_delay_msecs | |
2436 | */ | |
2437 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2438 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2439 | char *page) | |
2440 | { | |
2441 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2442 | } | |
2443 | ||
2444 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2445 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2446 | const char *page, | |
2447 | size_t count) | |
2448 | { | |
2449 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2450 | } | |
2451 | ||
2452 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2453 | ||
2454 | /* | |
2455 | * preferred | |
2456 | */ | |
2457 | ||
2458 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2459 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2460 | char *page) | |
2461 | { | |
2462 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2463 | } | |
2464 | ||
2465 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2466 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2467 | const char *page, | |
2468 | size_t count) | |
2469 | { | |
2470 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2471 | } | |
2472 | ||
2473 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2474 | ||
2475 | /* | |
2476 | * tg_pt_gp_id | |
2477 | */ | |
2478 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2479 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2480 | char *page) | |
2481 | { | |
2482 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) | |
2483 | return 0; | |
2484 | ||
2485 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2486 | } | |
2487 | ||
2488 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2489 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2490 | const char *page, | |
2491 | size_t count) | |
2492 | { | |
2493 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2494 | unsigned long tg_pt_gp_id; | |
2495 | int ret; | |
2496 | ||
2497 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2498 | if (ret < 0) { | |
2499 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
2500 | " tg_pt_gp_id\n", ret); | |
2501 | return -EINVAL; | |
2502 | } | |
2503 | if (tg_pt_gp_id > 0x0000ffff) { | |
2504 | printk(KERN_ERR "ALUA tg_pt_gp_id: %lu exceeds maximum:" | |
2505 | " 0x0000ffff\n", tg_pt_gp_id); | |
2506 | return -EINVAL; | |
2507 | } | |
2508 | ||
2509 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2510 | if (ret < 0) | |
2511 | return -EINVAL; | |
2512 | ||
2513 | printk(KERN_INFO "Target_Core_ConfigFS: Set ALUA Target Port Group: " | |
2514 | "core/alua/tg_pt_gps/%s to ID: %hu\n", | |
2515 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2516 | tg_pt_gp->tg_pt_gp_id); | |
2517 | ||
2518 | return count; | |
2519 | } | |
2520 | ||
2521 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2522 | ||
2523 | /* | |
2524 | * members | |
2525 | */ | |
2526 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2527 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2528 | char *page) | |
2529 | { | |
2530 | struct se_port *port; | |
2531 | struct se_portal_group *tpg; | |
2532 | struct se_lun *lun; | |
2533 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2534 | ssize_t len = 0, cur_len; | |
2535 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2536 | ||
2537 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2538 | ||
2539 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2540 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2541 | tg_pt_gp_mem_list) { | |
2542 | port = tg_pt_gp_mem->tg_pt; | |
2543 | tpg = port->sep_tpg; | |
2544 | lun = port->sep_lun; | |
2545 | ||
2546 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
2547 | "/%s\n", TPG_TFO(tpg)->get_fabric_name(), | |
2548 | TPG_TFO(tpg)->tpg_get_wwn(tpg), | |
2549 | TPG_TFO(tpg)->tpg_get_tag(tpg), | |
2550 | config_item_name(&lun->lun_group.cg_item)); | |
2551 | cur_len++; /* Extra byte for NULL terminator */ | |
2552 | ||
2553 | if ((cur_len + len) > PAGE_SIZE) { | |
2554 | printk(KERN_WARNING "Ran out of lu_gp_show_attr" | |
2555 | "_members buffer\n"); | |
2556 | break; | |
2557 | } | |
2558 | memcpy(page+len, buf, cur_len); | |
2559 | len += cur_len; | |
2560 | } | |
2561 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2562 | ||
2563 | return len; | |
2564 | } | |
2565 | ||
2566 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2567 | ||
2568 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2569 | tg_pt_gp_group); | |
2570 | ||
2571 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2572 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2573 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2574 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2575 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2576 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2577 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
2578 | &target_core_alua_tg_pt_gp_preferred.attr, | |
2579 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2580 | &target_core_alua_tg_pt_gp_members.attr, | |
2581 | NULL, | |
2582 | }; | |
2583 | ||
1f6fe7cb NB |
2584 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2585 | { | |
2586 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2587 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2588 | ||
2589 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2590 | } | |
2591 | ||
c66ac9db | 2592 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2593 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2594 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2595 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2596 | }; | |
2597 | ||
2598 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2599 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2600 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2601 | .ct_owner = THIS_MODULE, | |
2602 | }; | |
2603 | ||
2604 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2605 | ||
2606 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2607 | ||
2608 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2609 | struct config_group *group, | |
2610 | const char *name) | |
2611 | { | |
2612 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2613 | alua_tg_pt_gps_group); | |
2614 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2615 | struct se_subsystem_dev *su_dev = alua->t10_sub_dev; | |
2616 | struct config_group *alua_tg_pt_gp_cg = NULL; | |
2617 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2618 | ||
2619 | tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); | |
2620 | if (!(tg_pt_gp)) | |
2621 | return NULL; | |
2622 | ||
2623 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2624 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2625 | ||
2626 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2627 | &target_core_alua_tg_pt_gp_cit); | |
2628 | ||
2629 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated ALUA Target Port" | |
2630 | " Group: alua/tg_pt_gps/%s\n", | |
2631 | config_item_name(alua_tg_pt_gp_ci)); | |
2632 | ||
2633 | return alua_tg_pt_gp_cg; | |
2634 | } | |
2635 | ||
2636 | static void target_core_alua_drop_tg_pt_gp( | |
2637 | struct config_group *group, | |
2638 | struct config_item *item) | |
2639 | { | |
2640 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2641 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2642 | ||
2643 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing ALUA Target Port" | |
2644 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", | |
2645 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2646 | /* |
2647 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2648 | * -> target_core_alua_tg_pt_gp_release(). | |
2649 | */ | |
c66ac9db | 2650 | config_item_put(item); |
c66ac9db NB |
2651 | } |
2652 | ||
2653 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2654 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2655 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2656 | }; | |
2657 | ||
2658 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2659 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2660 | .ct_owner = THIS_MODULE, | |
2661 | }; | |
2662 | ||
2663 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2664 | ||
2665 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2666 | ||
2667 | /* | |
2668 | * target_core_alua_cit is a ConfigFS group that lives under | |
2669 | * /sys/kernel/config/target/core/alua. There are default groups | |
2670 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2671 | * target_core_alua_cit in target_core_init_configfs() below. | |
2672 | */ | |
2673 | static struct config_item_type target_core_alua_cit = { | |
2674 | .ct_item_ops = NULL, | |
2675 | .ct_attrs = NULL, | |
2676 | .ct_owner = THIS_MODULE, | |
2677 | }; | |
2678 | ||
2679 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2680 | ||
2681 | /* Start functions for struct config_item_type target_core_hba_cit */ | |
2682 | ||
2683 | static struct config_group *target_core_make_subdev( | |
2684 | struct config_group *group, | |
2685 | const char *name) | |
2686 | { | |
2687 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2688 | struct se_subsystem_dev *se_dev; | |
2689 | struct se_subsystem_api *t; | |
2690 | struct config_item *hba_ci = &group->cg_item; | |
2691 | struct se_hba *hba = item_to_hba(hba_ci); | |
2692 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; | |
2693 | ||
2694 | if (mutex_lock_interruptible(&hba->hba_access_mutex)) | |
2695 | return NULL; | |
2696 | ||
2697 | /* | |
2698 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2699 | */ | |
2700 | t = hba->transport; | |
2701 | ||
2702 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
2703 | if (!se_dev) { | |
2704 | printk(KERN_ERR "Unable to allocate memory for" | |
2705 | " struct se_subsystem_dev\n"); | |
2706 | goto unlock; | |
2707 | } | |
2708 | INIT_LIST_HEAD(&se_dev->g_se_dev_list); | |
2709 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); | |
2710 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
2711 | INIT_LIST_HEAD(&se_dev->t10_reservation.registration_list); | |
2712 | INIT_LIST_HEAD(&se_dev->t10_reservation.aptpl_reg_list); | |
2713 | spin_lock_init(&se_dev->t10_reservation.registration_lock); | |
2714 | spin_lock_init(&se_dev->t10_reservation.aptpl_reg_lock); | |
2715 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); | |
2716 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
2717 | spin_lock_init(&se_dev->se_dev_lock); | |
2718 | se_dev->t10_reservation.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; | |
2719 | se_dev->t10_wwn.t10_sub_dev = se_dev; | |
2720 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
2721 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
2722 | ||
2723 | se_dev->se_dev_hba = hba; | |
2724 | dev_cg = &se_dev->se_dev_group; | |
2725 | ||
2726 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 6, | |
2727 | GFP_KERNEL); | |
2728 | if (!(dev_cg->default_groups)) | |
2729 | goto out; | |
2730 | /* | |
2731 | * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr | |
2732 | * for ->allocate_virtdevice() | |
2733 | * | |
2734 | * se_dev->se_dev_ptr will be set after ->create_virtdev() | |
2735 | * has been called successfully in the next level up in the | |
2736 | * configfs tree for device object's struct config_group. | |
2737 | */ | |
2738 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); | |
2739 | if (!(se_dev->se_dev_su_ptr)) { | |
2740 | printk(KERN_ERR "Unable to locate subsystem dependent pointer" | |
2741 | " from allocate_virtdevice()\n"); | |
2742 | goto out; | |
2743 | } | |
2744 | spin_lock(&se_global->g_device_lock); | |
2745 | list_add_tail(&se_dev->g_se_dev_list, &se_global->g_se_dev_list); | |
2746 | spin_unlock(&se_global->g_device_lock); | |
2747 | ||
2748 | config_group_init_type_name(&se_dev->se_dev_group, name, | |
2749 | &target_core_dev_cit); | |
2750 | config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", | |
2751 | &target_core_dev_attrib_cit); | |
2752 | config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", | |
2753 | &target_core_dev_pr_cit); | |
2754 | config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", | |
2755 | &target_core_dev_wwn_cit); | |
2756 | config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, | |
2757 | "alua", &target_core_alua_tg_pt_gps_cit); | |
2758 | dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; | |
2759 | dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; | |
2760 | dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; | |
2761 | dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; | |
2762 | dev_cg->default_groups[4] = NULL; | |
2763 | /* | |
2764 | * Add core/$HBA/$DEV/alua/tg_pt_gps/default_tg_pt_gp | |
2765 | */ | |
2766 | tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); | |
2767 | if (!(tg_pt_gp)) | |
2768 | goto out; | |
2769 | ||
2770 | tg_pt_gp_cg = &T10_ALUA(se_dev)->alua_tg_pt_gps_group; | |
2771 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
2772 | GFP_KERNEL); | |
2773 | if (!(tg_pt_gp_cg->default_groups)) { | |
2774 | printk(KERN_ERR "Unable to allocate tg_pt_gp_cg->" | |
2775 | "default_groups\n"); | |
2776 | goto out; | |
2777 | } | |
2778 | ||
2779 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2780 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2781 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2782 | tg_pt_gp_cg->default_groups[1] = NULL; | |
2783 | T10_ALUA(se_dev)->default_tg_pt_gp = tg_pt_gp; | |
2784 | ||
2785 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" | |
2786 | " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); | |
2787 | ||
2788 | mutex_unlock(&hba->hba_access_mutex); | |
2789 | return &se_dev->se_dev_group; | |
2790 | out: | |
2791 | if (T10_ALUA(se_dev)->default_tg_pt_gp) { | |
2792 | core_alua_free_tg_pt_gp(T10_ALUA(se_dev)->default_tg_pt_gp); | |
2793 | T10_ALUA(se_dev)->default_tg_pt_gp = NULL; | |
2794 | } | |
2795 | if (tg_pt_gp_cg) | |
2796 | kfree(tg_pt_gp_cg->default_groups); | |
2797 | if (dev_cg) | |
2798 | kfree(dev_cg->default_groups); | |
2799 | if (se_dev->se_dev_su_ptr) | |
2800 | t->free_device(se_dev->se_dev_su_ptr); | |
2801 | kfree(se_dev); | |
2802 | unlock: | |
2803 | mutex_unlock(&hba->hba_access_mutex); | |
2804 | return NULL; | |
2805 | } | |
2806 | ||
2807 | static void target_core_drop_subdev( | |
2808 | struct config_group *group, | |
2809 | struct config_item *item) | |
2810 | { | |
2811 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2812 | struct se_subsystem_dev, se_dev_group); | |
2813 | struct se_hba *hba; | |
2814 | struct se_subsystem_api *t; | |
2815 | struct config_item *df_item; | |
2816 | struct config_group *dev_cg, *tg_pt_gp_cg; | |
1f6fe7cb | 2817 | int i; |
c66ac9db NB |
2818 | |
2819 | hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); | |
2820 | ||
1f6fe7cb | 2821 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db NB |
2822 | t = hba->transport; |
2823 | ||
2824 | spin_lock(&se_global->g_device_lock); | |
2825 | list_del(&se_dev->g_se_dev_list); | |
2826 | spin_unlock(&se_global->g_device_lock); | |
2827 | ||
2828 | tg_pt_gp_cg = &T10_ALUA(se_dev)->alua_tg_pt_gps_group; | |
2829 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { | |
2830 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2831 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2832 | config_item_put(df_item); | |
2833 | } | |
2834 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2835 | /* |
2836 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2837 | * directly from target_core_alua_tg_pt_gp_release(). | |
2838 | */ | |
c66ac9db NB |
2839 | T10_ALUA(se_dev)->default_tg_pt_gp = NULL; |
2840 | ||
2841 | dev_cg = &se_dev->se_dev_group; | |
2842 | for (i = 0; dev_cg->default_groups[i]; i++) { | |
2843 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2844 | dev_cg->default_groups[i] = NULL; | |
2845 | config_item_put(df_item); | |
2846 | } | |
c66ac9db | 2847 | /* |
1f6fe7cb NB |
2848 | * The releasing of se_dev and associated se_dev->se_dev_ptr is done |
2849 | * from target_core_dev_item_ops->release() ->target_core_dev_release(). | |
c66ac9db | 2850 | */ |
1f6fe7cb | 2851 | config_item_put(item); |
c66ac9db | 2852 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2853 | } |
2854 | ||
2855 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2856 | .make_group = target_core_make_subdev, | |
2857 | .drop_item = target_core_drop_subdev, | |
2858 | }; | |
2859 | ||
2860 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2861 | #define SE_HBA_ATTR(_name, _mode) \ | |
2862 | static struct target_core_hba_attribute \ | |
2863 | target_core_hba_##_name = \ | |
2864 | __CONFIGFS_EATTR(_name, _mode, \ | |
2865 | target_core_hba_show_attr_##_name, \ | |
2866 | target_core_hba_store_attr_##_name); | |
2867 | ||
2868 | #define SE_HBA_ATTR_RO(_name) \ | |
2869 | static struct target_core_hba_attribute \ | |
2870 | target_core_hba_##_name = \ | |
2871 | __CONFIGFS_EATTR_RO(_name, \ | |
2872 | target_core_hba_show_attr_##_name); | |
2873 | ||
2874 | static ssize_t target_core_hba_show_attr_hba_info( | |
2875 | struct se_hba *hba, | |
2876 | char *page) | |
2877 | { | |
2878 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2879 | hba->hba_id, hba->transport->name, | |
2880 | TARGET_CORE_CONFIGFS_VERSION); | |
2881 | } | |
2882 | ||
2883 | SE_HBA_ATTR_RO(hba_info); | |
2884 | ||
2885 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2886 | char *page) | |
2887 | { | |
2888 | int hba_mode = 0; | |
2889 | ||
2890 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2891 | hba_mode = 1; | |
2892 | ||
2893 | return sprintf(page, "%d\n", hba_mode); | |
2894 | } | |
2895 | ||
2896 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2897 | const char *page, size_t count) | |
2898 | { | |
2899 | struct se_subsystem_api *transport = hba->transport; | |
2900 | unsigned long mode_flag; | |
2901 | int ret; | |
2902 | ||
2903 | if (transport->pmode_enable_hba == NULL) | |
2904 | return -EINVAL; | |
2905 | ||
2906 | ret = strict_strtoul(page, 0, &mode_flag); | |
2907 | if (ret < 0) { | |
2908 | printk(KERN_ERR "Unable to extract hba mode flag: %d\n", ret); | |
2909 | return -EINVAL; | |
2910 | } | |
2911 | ||
2912 | spin_lock(&hba->device_lock); | |
2913 | if (!(list_empty(&hba->hba_dev_list))) { | |
2914 | printk(KERN_ERR "Unable to set hba_mode with active devices\n"); | |
2915 | spin_unlock(&hba->device_lock); | |
2916 | return -EINVAL; | |
2917 | } | |
2918 | spin_unlock(&hba->device_lock); | |
2919 | ||
2920 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2921 | if (ret < 0) | |
2922 | return -EINVAL; | |
2923 | if (ret > 0) | |
2924 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2925 | else if (ret == 0) | |
2926 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2927 | ||
2928 | return count; | |
2929 | } | |
2930 | ||
2931 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2932 | ||
2933 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2934 | ||
1f6fe7cb NB |
2935 | static void target_core_hba_release(struct config_item *item) |
2936 | { | |
2937 | struct se_hba *hba = container_of(to_config_group(item), | |
2938 | struct se_hba, hba_group); | |
2939 | core_delete_hba(hba); | |
2940 | } | |
2941 | ||
c66ac9db NB |
2942 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2943 | &target_core_hba_hba_info.attr, | |
2944 | &target_core_hba_hba_mode.attr, | |
2945 | NULL, | |
2946 | }; | |
2947 | ||
2948 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2949 | .release = target_core_hba_release, |
c66ac9db NB |
2950 | .show_attribute = target_core_hba_attr_show, |
2951 | .store_attribute = target_core_hba_attr_store, | |
2952 | }; | |
2953 | ||
2954 | static struct config_item_type target_core_hba_cit = { | |
2955 | .ct_item_ops = &target_core_hba_item_ops, | |
2956 | .ct_group_ops = &target_core_hba_group_ops, | |
2957 | .ct_attrs = target_core_hba_attrs, | |
2958 | .ct_owner = THIS_MODULE, | |
2959 | }; | |
2960 | ||
2961 | static struct config_group *target_core_call_addhbatotarget( | |
2962 | struct config_group *group, | |
2963 | const char *name) | |
2964 | { | |
2965 | char *se_plugin_str, *str, *str2; | |
2966 | struct se_hba *hba; | |
2967 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
2968 | unsigned long plugin_dep_id = 0; | |
2969 | int ret; | |
2970 | ||
2971 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
2972 | if (strlen(name) > TARGET_CORE_NAME_MAX_LEN) { | |
2973 | printk(KERN_ERR "Passed *name strlen(): %d exceeds" | |
2974 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), | |
2975 | TARGET_CORE_NAME_MAX_LEN); | |
2976 | return ERR_PTR(-ENAMETOOLONG); | |
2977 | } | |
2978 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
2979 | ||
2980 | str = strstr(buf, "_"); | |
2981 | if (!(str)) { | |
2982 | printk(KERN_ERR "Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
2983 | return ERR_PTR(-EINVAL); | |
2984 | } | |
2985 | se_plugin_str = buf; | |
2986 | /* | |
2987 | * Special case for subsystem plugins that have "_" in their names. | |
2988 | * Namely rd_direct and rd_mcp.. | |
2989 | */ | |
2990 | str2 = strstr(str+1, "_"); | |
2991 | if ((str2)) { | |
2992 | *str2 = '\0'; /* Terminate for *se_plugin_str */ | |
2993 | str2++; /* Skip to start of plugin dependent ID */ | |
2994 | str = str2; | |
2995 | } else { | |
2996 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
2997 | str++; /* Skip to start of plugin dependent ID */ | |
2998 | } | |
2999 | ||
3000 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
3001 | if (ret < 0) { | |
3002 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
3003 | " plugin_dep_id\n", ret); | |
3004 | return ERR_PTR(-EINVAL); | |
3005 | } | |
3006 | /* | |
3007 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3008 | */ | |
3009 | if (transport_subsystem_check_init() < 0) | |
3010 | return ERR_PTR(-EINVAL); | |
3011 | ||
3012 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3013 | if (IS_ERR(hba)) | |
3014 | return ERR_CAST(hba); | |
3015 | ||
3016 | config_group_init_type_name(&hba->hba_group, name, | |
3017 | &target_core_hba_cit); | |
3018 | ||
3019 | return &hba->hba_group; | |
3020 | } | |
3021 | ||
3022 | static void target_core_call_delhbafromtarget( | |
3023 | struct config_group *group, | |
3024 | struct config_item *item) | |
3025 | { | |
1f6fe7cb NB |
3026 | /* |
3027 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3028 | * -> target_core_hba_release() | |
3029 | */ | |
c66ac9db | 3030 | config_item_put(item); |
c66ac9db NB |
3031 | } |
3032 | ||
3033 | static struct configfs_group_operations target_core_group_ops = { | |
3034 | .make_group = target_core_call_addhbatotarget, | |
3035 | .drop_item = target_core_call_delhbafromtarget, | |
3036 | }; | |
3037 | ||
3038 | static struct config_item_type target_core_cit = { | |
3039 | .ct_item_ops = NULL, | |
3040 | .ct_group_ops = &target_core_group_ops, | |
3041 | .ct_attrs = NULL, | |
3042 | .ct_owner = THIS_MODULE, | |
3043 | }; | |
3044 | ||
3045 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3046 | ||
3047 | static int target_core_init_configfs(void) | |
3048 | { | |
3049 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3050 | struct config_group *lu_gp_cg = NULL; | |
3051 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3052 | struct t10_alua_lu_gp *lu_gp; |
3053 | int ret; | |
3054 | ||
3055 | printk(KERN_INFO "TARGET_CORE[0]: Loading Generic Kernel Storage" | |
3056 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", | |
3057 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3058 | ||
3059 | subsys = target_core_subsystem[0]; | |
3060 | config_group_init(&subsys->su_group); | |
3061 | mutex_init(&subsys->su_mutex); | |
3062 | ||
3063 | INIT_LIST_HEAD(&g_tf_list); | |
3064 | mutex_init(&g_tf_lock); | |
3065 | init_scsi_index_table(); | |
3066 | ret = init_se_global(); | |
3067 | if (ret < 0) | |
3068 | return -1; | |
3069 | /* | |
3070 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3071 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3072 | */ | |
3073 | target_cg = &subsys->su_group; | |
3074 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3075 | GFP_KERNEL); | |
3076 | if (!(target_cg->default_groups)) { | |
3077 | printk(KERN_ERR "Unable to allocate target_cg->default_groups\n"); | |
3078 | goto out_global; | |
3079 | } | |
3080 | ||
3081 | config_group_init_type_name(&se_global->target_core_hbagroup, | |
3082 | "core", &target_core_cit); | |
3083 | target_cg->default_groups[0] = &se_global->target_core_hbagroup; | |
3084 | target_cg->default_groups[1] = NULL; | |
3085 | /* | |
3086 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3087 | */ | |
3088 | hba_cg = &se_global->target_core_hbagroup; | |
3089 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3090 | GFP_KERNEL); | |
3091 | if (!(hba_cg->default_groups)) { | |
3092 | printk(KERN_ERR "Unable to allocate hba_cg->default_groups\n"); | |
3093 | goto out_global; | |
3094 | } | |
3095 | config_group_init_type_name(&se_global->alua_group, | |
3096 | "alua", &target_core_alua_cit); | |
3097 | hba_cg->default_groups[0] = &se_global->alua_group; | |
3098 | hba_cg->default_groups[1] = NULL; | |
3099 | /* | |
3100 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3101 | * groups under /sys/kernel/config/target/core/alua/ | |
3102 | */ | |
3103 | alua_cg = &se_global->alua_group; | |
3104 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3105 | GFP_KERNEL); | |
3106 | if (!(alua_cg->default_groups)) { | |
3107 | printk(KERN_ERR "Unable to allocate alua_cg->default_groups\n"); | |
3108 | goto out_global; | |
3109 | } | |
3110 | ||
3111 | config_group_init_type_name(&se_global->alua_lu_gps_group, | |
3112 | "lu_gps", &target_core_alua_lu_gps_cit); | |
3113 | alua_cg->default_groups[0] = &se_global->alua_lu_gps_group; | |
3114 | alua_cg->default_groups[1] = NULL; | |
3115 | /* | |
3116 | * Add core/alua/lu_gps/default_lu_gp | |
3117 | */ | |
3118 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
3119 | if (IS_ERR(lu_gp)) | |
3120 | goto out_global; | |
3121 | ||
3122 | lu_gp_cg = &se_global->alua_lu_gps_group; | |
3123 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3124 | GFP_KERNEL); | |
3125 | if (!(lu_gp_cg->default_groups)) { | |
3126 | printk(KERN_ERR "Unable to allocate lu_gp_cg->default_groups\n"); | |
3127 | goto out_global; | |
3128 | } | |
3129 | ||
3130 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3131 | &target_core_alua_lu_gp_cit); | |
3132 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3133 | lu_gp_cg->default_groups[1] = NULL; | |
3134 | se_global->default_lu_gp = lu_gp; | |
3135 | /* | |
3136 | * Register the target_core_mod subsystem with configfs. | |
3137 | */ | |
3138 | ret = configfs_register_subsystem(subsys); | |
3139 | if (ret < 0) { | |
3140 | printk(KERN_ERR "Error %d while registering subsystem %s\n", | |
3141 | ret, subsys->su_group.cg_item.ci_namebuf); | |
3142 | goto out_global; | |
3143 | } | |
3144 | printk(KERN_INFO "TARGET_CORE[0]: Initialized ConfigFS Fabric" | |
3145 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" | |
3146 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3147 | /* | |
3148 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3149 | */ | |
3150 | ret = rd_module_init(); | |
3151 | if (ret < 0) | |
3152 | goto out; | |
3153 | ||
3154 | if (core_dev_setup_virtual_lun0() < 0) | |
3155 | goto out; | |
3156 | ||
c66ac9db NB |
3157 | return 0; |
3158 | ||
3159 | out: | |
3160 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3161 | core_dev_release_virtual_lun0(); |
3162 | rd_module_exit(); | |
3163 | out_global: | |
3164 | if (se_global->default_lu_gp) { | |
3165 | core_alua_free_lu_gp(se_global->default_lu_gp); | |
3166 | se_global->default_lu_gp = NULL; | |
3167 | } | |
3168 | if (lu_gp_cg) | |
3169 | kfree(lu_gp_cg->default_groups); | |
3170 | if (alua_cg) | |
3171 | kfree(alua_cg->default_groups); | |
3172 | if (hba_cg) | |
3173 | kfree(hba_cg->default_groups); | |
3174 | kfree(target_cg->default_groups); | |
3175 | release_se_global(); | |
3176 | return -1; | |
3177 | } | |
3178 | ||
3179 | static void target_core_exit_configfs(void) | |
3180 | { | |
3181 | struct configfs_subsystem *subsys; | |
3182 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3183 | struct config_item *item; | |
3184 | int i; | |
3185 | ||
3186 | se_global->in_shutdown = 1; | |
3187 | subsys = target_core_subsystem[0]; | |
3188 | ||
3189 | lu_gp_cg = &se_global->alua_lu_gps_group; | |
3190 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { | |
3191 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3192 | lu_gp_cg->default_groups[i] = NULL; | |
3193 | config_item_put(item); | |
3194 | } | |
3195 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3196 | lu_gp_cg->default_groups = NULL; |
c66ac9db NB |
3197 | |
3198 | alua_cg = &se_global->alua_group; | |
3199 | for (i = 0; alua_cg->default_groups[i]; i++) { | |
3200 | item = &alua_cg->default_groups[i]->cg_item; | |
3201 | alua_cg->default_groups[i] = NULL; | |
3202 | config_item_put(item); | |
3203 | } | |
3204 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3205 | alua_cg->default_groups = NULL; |
c66ac9db NB |
3206 | |
3207 | hba_cg = &se_global->target_core_hbagroup; | |
3208 | for (i = 0; hba_cg->default_groups[i]; i++) { | |
3209 | item = &hba_cg->default_groups[i]->cg_item; | |
3210 | hba_cg->default_groups[i] = NULL; | |
3211 | config_item_put(item); | |
3212 | } | |
3213 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3214 | hba_cg->default_groups = NULL; |
3215 | /* | |
3216 | * We expect subsys->su_group.default_groups to be released | |
3217 | * by configfs subsystem provider logic.. | |
3218 | */ | |
3219 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3220 | kfree(subsys->su_group.default_groups); |
3221 | ||
7c2bf6e9 NB |
3222 | core_alua_free_lu_gp(se_global->default_lu_gp); |
3223 | se_global->default_lu_gp = NULL; | |
3224 | ||
c66ac9db NB |
3225 | printk(KERN_INFO "TARGET_CORE[0]: Released ConfigFS Fabric" |
3226 | " Infrastructure\n"); | |
3227 | ||
c66ac9db NB |
3228 | core_dev_release_virtual_lun0(); |
3229 | rd_module_exit(); | |
3230 | release_se_global(); | |
3231 | ||
3232 | return; | |
3233 | } | |
3234 | ||
3235 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3236 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3237 | MODULE_LICENSE("GPL"); | |
3238 | ||
3239 | module_init(target_core_init_configfs); | |
3240 | module_exit(target_core_exit_configfs); |