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