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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_configfs.c | |
3 | * | |
4 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
5 | * | |
12d23384 NB |
6 | * Copyright (c) 2008-2011 Rising Tide Systems |
7 | * Copyright (c) 2008-2011 Linux-iSCSI.org | |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | ****************************************************************************/ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
26 | #include <linux/version.h> | |
27 | #include <generated/utsrelease.h> | |
28 | #include <linux/utsname.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/fs.h> | |
31 | #include <linux/namei.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/types.h> | |
34 | #include <linux/delay.h> | |
35 | #include <linux/unistd.h> | |
36 | #include <linux/string.h> | |
37 | #include <linux/parser.h> | |
38 | #include <linux/syscalls.h> | |
39 | #include <linux/configfs.h> | |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
42 | #include <target/target_core_device.h> | |
43 | #include <target/target_core_transport.h> | |
44 | #include <target/target_core_fabric_ops.h> | |
45 | #include <target/target_core_fabric_configfs.h> | |
46 | #include <target/target_core_configfs.h> | |
47 | #include <target/configfs_macros.h> | |
48 | ||
49 | #include "target_core_alua.h" | |
50 | #include "target_core_hba.h" | |
51 | #include "target_core_pr.h" | |
52 | #include "target_core_rd.h" | |
12d23384 | 53 | #include "target_core_stat.h" |
c66ac9db NB |
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)) | |
5eff5be0 | 315 | return NULL; |
c66ac9db NB |
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 | } | |
c66ac9db NB |
500 | /* |
501 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
502 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
503 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
504 | */ | |
505 | if (!(tfo->fabric_make_wwn)) { | |
506 | printk(KERN_ERR "Missing tfo->fabric_make_wwn()\n"); | |
507 | return -EINVAL; | |
508 | } | |
509 | if (!(tfo->fabric_drop_wwn)) { | |
510 | printk(KERN_ERR "Missing tfo->fabric_drop_wwn()\n"); | |
511 | return -EINVAL; | |
512 | } | |
513 | if (!(tfo->fabric_make_tpg)) { | |
514 | printk(KERN_ERR "Missing tfo->fabric_make_tpg()\n"); | |
515 | return -EINVAL; | |
516 | } | |
517 | if (!(tfo->fabric_drop_tpg)) { | |
518 | printk(KERN_ERR "Missing tfo->fabric_drop_tpg()\n"); | |
519 | return -EINVAL; | |
520 | } | |
521 | ||
522 | return 0; | |
523 | } | |
524 | ||
525 | /* | |
526 | * Called 2nd from fabric module with returned parameter of | |
527 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
528 | * | |
529 | * Upon a successful registration, the new fabric's struct config_item is | |
530 | * return. Also, a pointer to this struct is set in the passed | |
531 | * struct target_fabric_configfs. | |
532 | */ | |
533 | int target_fabric_configfs_register( | |
534 | struct target_fabric_configfs *tf) | |
535 | { | |
536 | struct config_group *su_group; | |
537 | int ret; | |
538 | ||
539 | if (!(tf)) { | |
540 | printk(KERN_ERR "Unable to locate target_fabric_configfs" | |
541 | " pointer\n"); | |
542 | return -EINVAL; | |
543 | } | |
544 | if (!(tf->tf_subsys)) { | |
545 | printk(KERN_ERR "Unable to target struct config_subsystem" | |
546 | " pointer\n"); | |
547 | return -EINVAL; | |
548 | } | |
549 | su_group = &tf->tf_subsys->su_group; | |
550 | if (!(su_group)) { | |
551 | printk(KERN_ERR "Unable to locate target struct config_group" | |
552 | " pointer\n"); | |
553 | return -EINVAL; | |
554 | } | |
555 | ret = target_fabric_tf_ops_check(tf); | |
556 | if (ret < 0) | |
557 | return ret; | |
558 | ||
559 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" | |
560 | ">>>>>>>>>>\n"); | |
561 | return 0; | |
562 | } | |
563 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
564 | ||
565 | void target_fabric_configfs_deregister( | |
566 | struct target_fabric_configfs *tf) | |
567 | { | |
568 | struct config_group *su_group; | |
569 | struct configfs_subsystem *su; | |
570 | ||
571 | if (!(tf)) { | |
572 | printk(KERN_ERR "Unable to locate passed target_fabric_" | |
573 | "configfs\n"); | |
574 | return; | |
575 | } | |
576 | su = tf->tf_subsys; | |
577 | if (!(su)) { | |
578 | printk(KERN_ERR "Unable to locate passed tf->tf_subsys" | |
579 | " pointer\n"); | |
580 | return; | |
581 | } | |
582 | su_group = &tf->tf_subsys->su_group; | |
583 | if (!(su_group)) { | |
584 | printk(KERN_ERR "Unable to locate target struct config_group" | |
585 | " pointer\n"); | |
586 | return; | |
587 | } | |
588 | ||
589 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" | |
590 | ">>>>>>>>>>>>\n"); | |
591 | mutex_lock(&g_tf_lock); | |
592 | if (atomic_read(&tf->tf_access_cnt)) { | |
593 | mutex_unlock(&g_tf_lock); | |
594 | printk(KERN_ERR "Non zero tf->tf_access_cnt for fabric %s\n", | |
595 | tf->tf_name); | |
596 | BUG(); | |
597 | } | |
598 | list_del(&tf->tf_list); | |
599 | mutex_unlock(&g_tf_lock); | |
600 | ||
601 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" | |
602 | " %s\n", tf->tf_name); | |
603 | tf->tf_module = NULL; | |
604 | tf->tf_subsys = NULL; | |
605 | kfree(tf); | |
606 | ||
607 | printk("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" | |
608 | ">>>>>\n"); | |
609 | return; | |
610 | } | |
611 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
612 | ||
613 | /*############################################################################## | |
614 | // Stop functions called by external Target Fabrics Modules | |
615 | //############################################################################*/ | |
616 | ||
617 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
618 | ||
619 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
620 | static ssize_t target_core_dev_show_attr_##_name( \ | |
621 | struct se_dev_attrib *da, \ | |
622 | char *page) \ | |
623 | { \ | |
624 | struct se_device *dev; \ | |
625 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
626 | ssize_t rb; \ | |
627 | \ | |
628 | spin_lock(&se_dev->se_dev_lock); \ | |
629 | dev = se_dev->se_dev_ptr; \ | |
630 | if (!(dev)) { \ | |
631 | spin_unlock(&se_dev->se_dev_lock); \ | |
632 | return -ENODEV; \ | |
633 | } \ | |
634 | rb = snprintf(page, PAGE_SIZE, "%u\n", (u32)DEV_ATTRIB(dev)->_name); \ | |
635 | spin_unlock(&se_dev->se_dev_lock); \ | |
636 | \ | |
637 | return rb; \ | |
638 | } | |
639 | ||
640 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
641 | static ssize_t target_core_dev_store_attr_##_name( \ | |
642 | struct se_dev_attrib *da, \ | |
643 | const char *page, \ | |
644 | size_t count) \ | |
645 | { \ | |
646 | struct se_device *dev; \ | |
647 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
648 | unsigned long val; \ | |
649 | int ret; \ | |
650 | \ | |
651 | spin_lock(&se_dev->se_dev_lock); \ | |
652 | dev = se_dev->se_dev_ptr; \ | |
653 | if (!(dev)) { \ | |
654 | spin_unlock(&se_dev->se_dev_lock); \ | |
655 | return -ENODEV; \ | |
656 | } \ | |
657 | ret = strict_strtoul(page, 0, &val); \ | |
658 | if (ret < 0) { \ | |
659 | spin_unlock(&se_dev->se_dev_lock); \ | |
660 | printk(KERN_ERR "strict_strtoul() failed with" \ | |
661 | " ret: %d\n", ret); \ | |
662 | return -EINVAL; \ | |
663 | } \ | |
664 | ret = se_dev_set_##_name(dev, (u32)val); \ | |
665 | spin_unlock(&se_dev->se_dev_lock); \ | |
666 | \ | |
667 | return (!ret) ? count : -EINVAL; \ | |
668 | } | |
669 | ||
670 | #define DEF_DEV_ATTRIB(_name) \ | |
671 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
672 | DEF_DEV_ATTRIB_STORE(_name); | |
673 | ||
674 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
675 | DEF_DEV_ATTRIB_SHOW(_name); | |
676 | ||
677 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
678 | #define SE_DEV_ATTR(_name, _mode) \ | |
679 | static struct target_core_dev_attrib_attribute \ | |
680 | target_core_dev_attrib_##_name = \ | |
681 | __CONFIGFS_EATTR(_name, _mode, \ | |
682 | target_core_dev_show_attr_##_name, \ | |
683 | target_core_dev_store_attr_##_name); | |
684 | ||
685 | #define SE_DEV_ATTR_RO(_name); \ | |
686 | static struct target_core_dev_attrib_attribute \ | |
687 | target_core_dev_attrib_##_name = \ | |
688 | __CONFIGFS_EATTR_RO(_name, \ | |
689 | target_core_dev_show_attr_##_name); | |
690 | ||
691 | DEF_DEV_ATTRIB(emulate_dpo); | |
692 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
693 | ||
694 | DEF_DEV_ATTRIB(emulate_fua_write); | |
695 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
696 | ||
697 | DEF_DEV_ATTRIB(emulate_fua_read); | |
698 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
699 | ||
700 | DEF_DEV_ATTRIB(emulate_write_cache); | |
701 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
702 | ||
703 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
704 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
705 | ||
706 | DEF_DEV_ATTRIB(emulate_tas); | |
707 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
708 | ||
709 | DEF_DEV_ATTRIB(emulate_tpu); | |
710 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
711 | ||
712 | DEF_DEV_ATTRIB(emulate_tpws); | |
713 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
714 | ||
715 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
716 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
717 | ||
718 | DEF_DEV_ATTRIB_RO(hw_block_size); | |
719 | SE_DEV_ATTR_RO(hw_block_size); | |
720 | ||
721 | DEF_DEV_ATTRIB(block_size); | |
722 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
723 | ||
724 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
725 | SE_DEV_ATTR_RO(hw_max_sectors); | |
726 | ||
727 | DEF_DEV_ATTRIB(max_sectors); | |
728 | SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); | |
729 | ||
730 | DEF_DEV_ATTRIB(optimal_sectors); | |
731 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
732 | ||
733 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
734 | SE_DEV_ATTR_RO(hw_queue_depth); | |
735 | ||
736 | DEF_DEV_ATTRIB(queue_depth); | |
737 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
738 | ||
739 | DEF_DEV_ATTRIB(task_timeout); | |
740 | SE_DEV_ATTR(task_timeout, S_IRUGO | S_IWUSR); | |
741 | ||
742 | DEF_DEV_ATTRIB(max_unmap_lba_count); | |
743 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
744 | ||
745 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
746 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
747 | ||
748 | DEF_DEV_ATTRIB(unmap_granularity); | |
749 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
750 | ||
751 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
752 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
753 | ||
754 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
755 | ||
756 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
757 | &target_core_dev_attrib_emulate_dpo.attr, | |
758 | &target_core_dev_attrib_emulate_fua_write.attr, | |
759 | &target_core_dev_attrib_emulate_fua_read.attr, | |
760 | &target_core_dev_attrib_emulate_write_cache.attr, | |
761 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
762 | &target_core_dev_attrib_emulate_tas.attr, | |
763 | &target_core_dev_attrib_emulate_tpu.attr, | |
764 | &target_core_dev_attrib_emulate_tpws.attr, | |
765 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
766 | &target_core_dev_attrib_hw_block_size.attr, | |
767 | &target_core_dev_attrib_block_size.attr, | |
768 | &target_core_dev_attrib_hw_max_sectors.attr, | |
769 | &target_core_dev_attrib_max_sectors.attr, | |
770 | &target_core_dev_attrib_optimal_sectors.attr, | |
771 | &target_core_dev_attrib_hw_queue_depth.attr, | |
772 | &target_core_dev_attrib_queue_depth.attr, | |
773 | &target_core_dev_attrib_task_timeout.attr, | |
774 | &target_core_dev_attrib_max_unmap_lba_count.attr, | |
775 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
776 | &target_core_dev_attrib_unmap_granularity.attr, | |
777 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
778 | NULL, | |
779 | }; | |
780 | ||
781 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
782 | .show_attribute = target_core_dev_attrib_attr_show, | |
783 | .store_attribute = target_core_dev_attrib_attr_store, | |
784 | }; | |
785 | ||
786 | static struct config_item_type target_core_dev_attrib_cit = { | |
787 | .ct_item_ops = &target_core_dev_attrib_ops, | |
788 | .ct_attrs = target_core_dev_attrib_attrs, | |
789 | .ct_owner = THIS_MODULE, | |
790 | }; | |
791 | ||
792 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
793 | ||
794 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
795 | ||
796 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
797 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
798 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
799 | __CONFIGFS_EATTR(_name, _mode, \ | |
800 | target_core_dev_wwn_show_attr_##_name, \ | |
801 | target_core_dev_wwn_store_attr_##_name); | |
802 | ||
803 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
804 | do { \ | |
805 | static struct target_core_dev_wwn_attribute \ | |
806 | target_core_dev_wwn_##_name = \ | |
807 | __CONFIGFS_EATTR_RO(_name, \ | |
808 | target_core_dev_wwn_show_attr_##_name); \ | |
809 | } while (0); | |
810 | ||
811 | /* | |
812 | * VPD page 0x80 Unit serial | |
813 | */ | |
814 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
815 | struct t10_wwn *t10_wwn, | |
816 | char *page) | |
817 | { | |
818 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
819 | struct se_device *dev; | |
820 | ||
821 | dev = se_dev->se_dev_ptr; | |
822 | if (!(dev)) | |
823 | return -ENODEV; | |
824 | ||
825 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", | |
826 | &t10_wwn->unit_serial[0]); | |
827 | } | |
828 | ||
829 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
830 | struct t10_wwn *t10_wwn, | |
831 | const char *page, | |
832 | size_t count) | |
833 | { | |
834 | struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; | |
835 | struct se_device *dev; | |
836 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; | |
837 | ||
838 | /* | |
839 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
840 | * from the struct scsi_device level firmware, do not allow | |
841 | * VPD Unit Serial to be emulated. | |
842 | * | |
843 | * Note this struct scsi_device could also be emulating VPD | |
844 | * information from its drivers/scsi LLD. But for now we assume | |
845 | * it is doing 'the right thing' wrt a world wide unique | |
846 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
847 | */ | |
848 | if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { | |
849 | printk(KERN_ERR "Underlying SCSI device firmware provided VPD" | |
850 | " Unit Serial, ignoring request\n"); | |
851 | return -EOPNOTSUPP; | |
852 | } | |
853 | ||
854 | if ((strlen(page) + 1) > INQUIRY_VPD_SERIAL_LEN) { | |
855 | printk(KERN_ERR "Emulated VPD Unit Serial exceeds" | |
856 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); | |
857 | return -EOVERFLOW; | |
858 | } | |
859 | /* | |
860 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
861 | * do exist, fail here as changing this information on the fly | |
862 | * (underneath the initiator side OS dependent multipath code) | |
863 | * could cause negative effects. | |
864 | */ | |
865 | dev = su_dev->se_dev_ptr; | |
866 | if ((dev)) { | |
867 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
868 | printk(KERN_ERR "Unable to set VPD Unit Serial while" | |
869 | " active %d $FABRIC_MOD exports exist\n", | |
870 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
871 | return -EINVAL; | |
872 | } | |
873 | } | |
874 | /* | |
875 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
876 | * | |
877 | * Also, strip any newline added from the userspace | |
878 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
879 | */ | |
880 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
881 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
882 | snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, | |
883 | "%s", strstrip(buf)); | |
884 | su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; | |
885 | ||
886 | printk(KERN_INFO "Target_Core_ConfigFS: Set emulated VPD Unit Serial:" | |
887 | " %s\n", su_dev->t10_wwn.unit_serial); | |
888 | ||
889 | return count; | |
890 | } | |
891 | ||
892 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
893 | ||
894 | /* | |
895 | * VPD page 0x83 Protocol Identifier | |
896 | */ | |
897 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
898 | struct t10_wwn *t10_wwn, | |
899 | char *page) | |
900 | { | |
901 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
902 | struct se_device *dev; | |
903 | struct t10_vpd *vpd; | |
904 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
905 | ssize_t len = 0; | |
906 | ||
907 | dev = se_dev->se_dev_ptr; | |
908 | if (!(dev)) | |
909 | return -ENODEV; | |
910 | ||
911 | memset(buf, 0, VPD_TMP_BUF_SIZE); | |
912 | ||
913 | spin_lock(&t10_wwn->t10_vpd_lock); | |
914 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
915 | if (!(vpd->protocol_identifier_set)) | |
916 | continue; | |
917 | ||
918 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
919 | ||
920 | if ((len + strlen(buf) > PAGE_SIZE)) | |
921 | break; | |
922 | ||
923 | len += sprintf(page+len, "%s", buf); | |
924 | } | |
925 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
926 | ||
927 | return len; | |
928 | } | |
929 | ||
930 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
931 | struct t10_wwn *t10_wwn, | |
932 | const char *page, | |
933 | size_t count) | |
934 | { | |
935 | return -ENOSYS; | |
936 | } | |
937 | ||
938 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
939 | ||
940 | /* | |
941 | * Generic wrapper for dumping VPD identifiers by association. | |
942 | */ | |
943 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
944 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
945 | struct t10_wwn *t10_wwn, \ | |
946 | char *page) \ | |
947 | { \ | |
948 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ | |
949 | struct se_device *dev; \ | |
950 | struct t10_vpd *vpd; \ | |
951 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
952 | ssize_t len = 0; \ | |
953 | \ | |
954 | dev = se_dev->se_dev_ptr; \ | |
955 | if (!(dev)) \ | |
956 | return -ENODEV; \ | |
957 | \ | |
958 | spin_lock(&t10_wwn->t10_vpd_lock); \ | |
959 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
960 | if (vpd->association != _assoc) \ | |
961 | continue; \ | |
962 | \ | |
963 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
964 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
965 | if ((len + strlen(buf) > PAGE_SIZE)) \ | |
966 | break; \ | |
967 | len += sprintf(page+len, "%s", buf); \ | |
968 | \ | |
969 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
970 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
971 | if ((len + strlen(buf) > PAGE_SIZE)) \ | |
972 | break; \ | |
973 | len += sprintf(page+len, "%s", buf); \ | |
974 | \ | |
975 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
976 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
977 | if ((len + strlen(buf) > PAGE_SIZE)) \ | |
978 | break; \ | |
979 | len += sprintf(page+len, "%s", buf); \ | |
980 | } \ | |
981 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
982 | \ | |
983 | return len; \ | |
984 | } | |
985 | ||
986 | /* | |
987 | * VPD page 0x83 Assoication: Logical Unit | |
988 | */ | |
989 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
990 | ||
991 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
992 | struct t10_wwn *t10_wwn, | |
993 | const char *page, | |
994 | size_t count) | |
995 | { | |
996 | return -ENOSYS; | |
997 | } | |
998 | ||
999 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
1000 | ||
1001 | /* | |
1002 | * VPD page 0x83 Association: Target Port | |
1003 | */ | |
1004 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
1005 | ||
1006 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
1007 | struct t10_wwn *t10_wwn, | |
1008 | const char *page, | |
1009 | size_t count) | |
1010 | { | |
1011 | return -ENOSYS; | |
1012 | } | |
1013 | ||
1014 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
1015 | ||
1016 | /* | |
1017 | * VPD page 0x83 Association: SCSI Target Device | |
1018 | */ | |
1019 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
1020 | ||
1021 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
1022 | struct t10_wwn *t10_wwn, | |
1023 | const char *page, | |
1024 | size_t count) | |
1025 | { | |
1026 | return -ENOSYS; | |
1027 | } | |
1028 | ||
1029 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
1030 | ||
1031 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
1032 | ||
1033 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
1034 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
1035 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
1036 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
1037 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
1038 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1039 | NULL, | |
1040 | }; | |
1041 | ||
1042 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1043 | .show_attribute = target_core_dev_wwn_attr_show, | |
1044 | .store_attribute = target_core_dev_wwn_attr_store, | |
1045 | }; | |
1046 | ||
1047 | static struct config_item_type target_core_dev_wwn_cit = { | |
1048 | .ct_item_ops = &target_core_dev_wwn_ops, | |
1049 | .ct_attrs = target_core_dev_wwn_attrs, | |
1050 | .ct_owner = THIS_MODULE, | |
1051 | }; | |
1052 | ||
1053 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
1054 | ||
1055 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
1056 | ||
1057 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); | |
1058 | #define SE_DEV_PR_ATTR(_name, _mode) \ | |
1059 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1060 | __CONFIGFS_EATTR(_name, _mode, \ | |
1061 | target_core_dev_pr_show_attr_##_name, \ | |
1062 | target_core_dev_pr_store_attr_##_name); | |
1063 | ||
1064 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1065 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1066 | __CONFIGFS_EATTR_RO(_name, \ | |
1067 | target_core_dev_pr_show_attr_##_name); | |
1068 | ||
1069 | /* | |
1070 | * res_holder | |
1071 | */ | |
1072 | static ssize_t target_core_dev_pr_show_spc3_res( | |
1073 | struct se_device *dev, | |
1074 | char *page, | |
1075 | ssize_t *len) | |
1076 | { | |
1077 | struct se_node_acl *se_nacl; | |
1078 | struct t10_pr_registration *pr_reg; | |
1079 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1080 | int prf_isid; | |
1081 | ||
1082 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1083 | ||
1084 | spin_lock(&dev->dev_reservation_lock); | |
1085 | pr_reg = dev->dev_pr_res_holder; | |
1086 | if (!(pr_reg)) { | |
1087 | *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); | |
1088 | spin_unlock(&dev->dev_reservation_lock); | |
1089 | return *len; | |
1090 | } | |
1091 | se_nacl = pr_reg->pr_reg_nacl; | |
1092 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1093 | PR_REG_ISID_ID_LEN); | |
1094 | ||
1095 | *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", | |
1096 | TPG_TFO(se_nacl->se_tpg)->get_fabric_name(), | |
1097 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); | |
1098 | spin_unlock(&dev->dev_reservation_lock); | |
1099 | ||
1100 | return *len; | |
1101 | } | |
1102 | ||
1103 | static ssize_t target_core_dev_pr_show_spc2_res( | |
1104 | struct se_device *dev, | |
1105 | char *page, | |
1106 | ssize_t *len) | |
1107 | { | |
1108 | struct se_node_acl *se_nacl; | |
1109 | ||
1110 | spin_lock(&dev->dev_reservation_lock); | |
1111 | se_nacl = dev->dev_reserved_node_acl; | |
1112 | if (!(se_nacl)) { | |
1113 | *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); | |
1114 | spin_unlock(&dev->dev_reservation_lock); | |
1115 | return *len; | |
1116 | } | |
1117 | *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", | |
1118 | TPG_TFO(se_nacl->se_tpg)->get_fabric_name(), | |
1119 | se_nacl->initiatorname); | |
1120 | spin_unlock(&dev->dev_reservation_lock); | |
1121 | ||
1122 | return *len; | |
1123 | } | |
1124 | ||
1125 | static ssize_t target_core_dev_pr_show_attr_res_holder( | |
1126 | struct se_subsystem_dev *su_dev, | |
1127 | char *page) | |
1128 | { | |
1129 | ssize_t len = 0; | |
1130 | ||
1131 | if (!(su_dev->se_dev_ptr)) | |
1132 | return -ENODEV; | |
1133 | ||
1134 | switch (T10_RES(su_dev)->res_type) { | |
1135 | case SPC3_PERSISTENT_RESERVATIONS: | |
1136 | target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, | |
1137 | page, &len); | |
1138 | break; | |
1139 | case SPC2_RESERVATIONS: | |
1140 | target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, | |
1141 | page, &len); | |
1142 | break; | |
1143 | case SPC_PASSTHROUGH: | |
1144 | len += sprintf(page+len, "Passthrough\n"); | |
1145 | break; | |
1146 | default: | |
1147 | len += sprintf(page+len, "Unknown\n"); | |
1148 | break; | |
1149 | } | |
1150 | ||
1151 | return len; | |
1152 | } | |
1153 | ||
1154 | SE_DEV_PR_ATTR_RO(res_holder); | |
1155 | ||
1156 | /* | |
1157 | * res_pr_all_tgt_pts | |
1158 | */ | |
1159 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( | |
1160 | struct se_subsystem_dev *su_dev, | |
1161 | char *page) | |
1162 | { | |
1163 | struct se_device *dev; | |
1164 | struct t10_pr_registration *pr_reg; | |
1165 | ssize_t len = 0; | |
1166 | ||
1167 | dev = su_dev->se_dev_ptr; | |
1168 | if (!(dev)) | |
1169 | return -ENODEV; | |
1170 | ||
1171 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1172 | return len; | |
1173 | ||
1174 | spin_lock(&dev->dev_reservation_lock); | |
1175 | pr_reg = dev->dev_pr_res_holder; | |
1176 | if (!(pr_reg)) { | |
1177 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1178 | spin_unlock(&dev->dev_reservation_lock); | |
1179 | return len; | |
1180 | } | |
1181 | /* | |
1182 | * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 | |
1183 | * Basic PERSISTENT RESERVER OUT parameter list, page 290 | |
1184 | */ | |
1185 | if (pr_reg->pr_reg_all_tg_pt) | |
1186 | len = sprintf(page, "SPC-3 Reservation: All Target" | |
1187 | " Ports registration\n"); | |
1188 | else | |
1189 | len = sprintf(page, "SPC-3 Reservation: Single" | |
1190 | " Target Port registration\n"); | |
1191 | spin_unlock(&dev->dev_reservation_lock); | |
1192 | ||
1193 | return len; | |
1194 | } | |
1195 | ||
1196 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1197 | ||
1198 | /* | |
1199 | * res_pr_generation | |
1200 | */ | |
1201 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( | |
1202 | struct se_subsystem_dev *su_dev, | |
1203 | char *page) | |
1204 | { | |
1205 | if (!(su_dev->se_dev_ptr)) | |
1206 | return -ENODEV; | |
1207 | ||
1208 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1209 | return 0; | |
1210 | ||
1211 | return sprintf(page, "0x%08x\n", T10_RES(su_dev)->pr_generation); | |
1212 | } | |
1213 | ||
1214 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1215 | ||
1216 | /* | |
1217 | * res_pr_holder_tg_port | |
1218 | */ | |
1219 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
1220 | struct se_subsystem_dev *su_dev, | |
1221 | char *page) | |
1222 | { | |
1223 | struct se_device *dev; | |
1224 | struct se_node_acl *se_nacl; | |
1225 | struct se_lun *lun; | |
1226 | struct se_portal_group *se_tpg; | |
1227 | struct t10_pr_registration *pr_reg; | |
1228 | struct target_core_fabric_ops *tfo; | |
1229 | ssize_t len = 0; | |
1230 | ||
1231 | dev = su_dev->se_dev_ptr; | |
1232 | if (!(dev)) | |
1233 | return -ENODEV; | |
1234 | ||
1235 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1236 | return len; | |
1237 | ||
1238 | spin_lock(&dev->dev_reservation_lock); | |
1239 | pr_reg = dev->dev_pr_res_holder; | |
1240 | if (!(pr_reg)) { | |
1241 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1242 | spin_unlock(&dev->dev_reservation_lock); | |
1243 | return len; | |
1244 | } | |
1245 | se_nacl = pr_reg->pr_reg_nacl; | |
1246 | se_tpg = se_nacl->se_tpg; | |
1247 | lun = pr_reg->pr_reg_tg_pt_lun; | |
1248 | tfo = TPG_TFO(se_tpg); | |
1249 | ||
1250 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1251 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1252 | tfo->tpg_get_wwn(se_tpg)); | |
1253 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
1254 | " Identifer Tag: %hu %s Portal Group Tag: %hu" | |
1255 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, | |
1256 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1257 | tfo->get_fabric_name(), lun->unpacked_lun); | |
1258 | spin_unlock(&dev->dev_reservation_lock); | |
1259 | ||
1260 | return len; | |
1261 | } | |
1262 | ||
1263 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1264 | ||
1265 | /* | |
1266 | * res_pr_registered_i_pts | |
1267 | */ | |
1268 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( | |
1269 | struct se_subsystem_dev *su_dev, | |
1270 | char *page) | |
1271 | { | |
1272 | struct target_core_fabric_ops *tfo; | |
1273 | struct t10_pr_registration *pr_reg; | |
1274 | unsigned char buf[384]; | |
1275 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1276 | ssize_t len = 0; | |
1277 | int reg_count = 0, prf_isid; | |
1278 | ||
1279 | if (!(su_dev->se_dev_ptr)) | |
1280 | return -ENODEV; | |
1281 | ||
1282 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1283 | return len; | |
1284 | ||
1285 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); | |
1286 | ||
1287 | spin_lock(&T10_RES(su_dev)->registration_lock); | |
1288 | list_for_each_entry(pr_reg, &T10_RES(su_dev)->registration_list, | |
1289 | pr_reg_list) { | |
1290 | ||
1291 | memset(buf, 0, 384); | |
1292 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1293 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1294 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1295 | PR_REG_ISID_ID_LEN); | |
1296 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1297 | tfo->get_fabric_name(), | |
1298 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1299 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1300 | pr_reg->pr_res_generation); | |
1301 | ||
1302 | if ((len + strlen(buf) > PAGE_SIZE)) | |
1303 | break; | |
1304 | ||
1305 | len += sprintf(page+len, "%s", buf); | |
1306 | reg_count++; | |
1307 | } | |
1308 | spin_unlock(&T10_RES(su_dev)->registration_lock); | |
1309 | ||
1310 | if (!(reg_count)) | |
1311 | len += sprintf(page+len, "None\n"); | |
1312 | ||
1313 | return len; | |
1314 | } | |
1315 | ||
1316 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1317 | ||
1318 | /* | |
1319 | * res_pr_type | |
1320 | */ | |
1321 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( | |
1322 | struct se_subsystem_dev *su_dev, | |
1323 | char *page) | |
1324 | { | |
1325 | struct se_device *dev; | |
1326 | struct t10_pr_registration *pr_reg; | |
1327 | ssize_t len = 0; | |
1328 | ||
1329 | dev = su_dev->se_dev_ptr; | |
1330 | if (!(dev)) | |
1331 | return -ENODEV; | |
1332 | ||
1333 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1334 | return len; | |
1335 | ||
1336 | spin_lock(&dev->dev_reservation_lock); | |
1337 | pr_reg = dev->dev_pr_res_holder; | |
1338 | if (!(pr_reg)) { | |
1339 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1340 | spin_unlock(&dev->dev_reservation_lock); | |
1341 | return len; | |
1342 | } | |
1343 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1344 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1345 | spin_unlock(&dev->dev_reservation_lock); | |
1346 | ||
1347 | return len; | |
1348 | } | |
1349 | ||
1350 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1351 | ||
1352 | /* | |
1353 | * res_type | |
1354 | */ | |
1355 | static ssize_t target_core_dev_pr_show_attr_res_type( | |
1356 | struct se_subsystem_dev *su_dev, | |
1357 | char *page) | |
1358 | { | |
1359 | ssize_t len = 0; | |
1360 | ||
1361 | if (!(su_dev->se_dev_ptr)) | |
1362 | return -ENODEV; | |
1363 | ||
1364 | switch (T10_RES(su_dev)->res_type) { | |
1365 | case SPC3_PERSISTENT_RESERVATIONS: | |
1366 | len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
1367 | break; | |
1368 | case SPC2_RESERVATIONS: | |
1369 | len = sprintf(page, "SPC2_RESERVATIONS\n"); | |
1370 | break; | |
1371 | case SPC_PASSTHROUGH: | |
1372 | len = sprintf(page, "SPC_PASSTHROUGH\n"); | |
1373 | break; | |
1374 | default: | |
1375 | len = sprintf(page, "UNKNOWN\n"); | |
1376 | break; | |
1377 | } | |
1378 | ||
1379 | return len; | |
1380 | } | |
1381 | ||
1382 | SE_DEV_PR_ATTR_RO(res_type); | |
1383 | ||
1384 | /* | |
1385 | * res_aptpl_active | |
1386 | */ | |
1387 | ||
1388 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( | |
1389 | struct se_subsystem_dev *su_dev, | |
1390 | char *page) | |
1391 | { | |
1392 | if (!(su_dev->se_dev_ptr)) | |
1393 | return -ENODEV; | |
1394 | ||
1395 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1396 | return 0; | |
1397 | ||
1398 | return sprintf(page, "APTPL Bit Status: %s\n", | |
1399 | (T10_RES(su_dev)->pr_aptpl_active) ? "Activated" : "Disabled"); | |
1400 | } | |
1401 | ||
1402 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1403 | ||
1404 | /* | |
1405 | * res_aptpl_metadata | |
1406 | */ | |
1407 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
1408 | struct se_subsystem_dev *su_dev, | |
1409 | char *page) | |
1410 | { | |
1411 | if (!(su_dev->se_dev_ptr)) | |
1412 | return -ENODEV; | |
1413 | ||
1414 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1415 | return 0; | |
1416 | ||
1417 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1418 | } | |
1419 | ||
1420 | enum { | |
1421 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1422 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1423 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1424 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1425 | }; | |
1426 | ||
1427 | static match_table_t tokens = { | |
1428 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1429 | {Opt_initiator_node, "initiator_node=%s"}, | |
1430 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1431 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1432 | {Opt_res_holder, "res_holder=%d"}, | |
1433 | {Opt_res_type, "res_type=%d"}, | |
1434 | {Opt_res_scope, "res_scope=%d"}, | |
1435 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1436 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1437 | {Opt_target_fabric, "target_fabric=%s"}, | |
1438 | {Opt_target_node, "target_node=%s"}, | |
1439 | {Opt_tpgt, "tpgt=%d"}, | |
1440 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1441 | {Opt_target_lun, "target_lun=%d"}, | |
1442 | {Opt_err, NULL} | |
1443 | }; | |
1444 | ||
1445 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
1446 | struct se_subsystem_dev *su_dev, | |
1447 | const char *page, | |
1448 | size_t count) | |
1449 | { | |
1450 | struct se_device *dev; | |
6d180253 JJ |
1451 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1452 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1453 | char *orig, *ptr, *arg_p, *opts; |
1454 | substring_t args[MAX_OPT_ARGS]; | |
1455 | unsigned long long tmp_ll; | |
1456 | u64 sa_res_key = 0; | |
1457 | u32 mapped_lun = 0, target_lun = 0; | |
1458 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1459 | u16 port_rpti = 0, tpgt = 0; | |
1460 | u8 type = 0, scope; | |
1461 | ||
1462 | dev = su_dev->se_dev_ptr; | |
1463 | if (!(dev)) | |
1464 | return -ENODEV; | |
1465 | ||
1466 | if (T10_RES(su_dev)->res_type != SPC3_PERSISTENT_RESERVATIONS) | |
1467 | return 0; | |
1468 | ||
1469 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1470 | printk(KERN_INFO "Unable to process APTPL metadata while" | |
1471 | " active fabric exports exist\n"); | |
1472 | return -EINVAL; | |
1473 | } | |
1474 | ||
1475 | opts = kstrdup(page, GFP_KERNEL); | |
1476 | if (!opts) | |
1477 | return -ENOMEM; | |
1478 | ||
1479 | orig = opts; | |
1480 | while ((ptr = strsep(&opts, ",")) != NULL) { | |
1481 | if (!*ptr) | |
1482 | continue; | |
1483 | ||
1484 | token = match_token(ptr, tokens, args); | |
1485 | switch (token) { | |
1486 | case Opt_initiator_fabric: | |
1487 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1488 | if (!i_fabric) { |
1489 | ret = -ENOMEM; | |
1490 | goto out; | |
1491 | } | |
c66ac9db NB |
1492 | break; |
1493 | case Opt_initiator_node: | |
1494 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1495 | if (!i_port) { |
1496 | ret = -ENOMEM; | |
1497 | goto out; | |
1498 | } | |
c66ac9db NB |
1499 | if (strlen(i_port) > PR_APTPL_MAX_IPORT_LEN) { |
1500 | printk(KERN_ERR "APTPL metadata initiator_node=" | |
1501 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", | |
1502 | PR_APTPL_MAX_IPORT_LEN); | |
1503 | ret = -EINVAL; | |
1504 | break; | |
1505 | } | |
1506 | break; | |
1507 | case Opt_initiator_sid: | |
1508 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1509 | if (!isid) { |
1510 | ret = -ENOMEM; | |
1511 | goto out; | |
1512 | } | |
c66ac9db NB |
1513 | if (strlen(isid) > PR_REG_ISID_LEN) { |
1514 | printk(KERN_ERR "APTPL metadata initiator_isid" | |
1515 | "= exceeds PR_REG_ISID_LEN: %d\n", | |
1516 | PR_REG_ISID_LEN); | |
1517 | ret = -EINVAL; | |
1518 | break; | |
1519 | } | |
1520 | break; | |
1521 | case Opt_sa_res_key: | |
1522 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1523 | if (!arg_p) { |
1524 | ret = -ENOMEM; | |
1525 | goto out; | |
1526 | } | |
c66ac9db NB |
1527 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
1528 | if (ret < 0) { | |
1529 | printk(KERN_ERR "strict_strtoull() failed for" | |
1530 | " sa_res_key=\n"); | |
1531 | goto out; | |
1532 | } | |
1533 | sa_res_key = (u64)tmp_ll; | |
1534 | break; | |
1535 | /* | |
1536 | * PR APTPL Metadata for Reservation | |
1537 | */ | |
1538 | case Opt_res_holder: | |
1539 | match_int(args, &arg); | |
1540 | res_holder = arg; | |
1541 | break; | |
1542 | case Opt_res_type: | |
1543 | match_int(args, &arg); | |
1544 | type = (u8)arg; | |
1545 | break; | |
1546 | case Opt_res_scope: | |
1547 | match_int(args, &arg); | |
1548 | scope = (u8)arg; | |
1549 | break; | |
1550 | case Opt_res_all_tg_pt: | |
1551 | match_int(args, &arg); | |
1552 | all_tg_pt = (int)arg; | |
1553 | break; | |
1554 | case Opt_mapped_lun: | |
1555 | match_int(args, &arg); | |
1556 | mapped_lun = (u32)arg; | |
1557 | break; | |
1558 | /* | |
1559 | * PR APTPL Metadata for Target Port | |
1560 | */ | |
1561 | case Opt_target_fabric: | |
1562 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1563 | if (!t_fabric) { |
1564 | ret = -ENOMEM; | |
1565 | goto out; | |
1566 | } | |
c66ac9db NB |
1567 | break; |
1568 | case Opt_target_node: | |
1569 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1570 | if (!t_port) { |
1571 | ret = -ENOMEM; | |
1572 | goto out; | |
1573 | } | |
c66ac9db NB |
1574 | if (strlen(t_port) > PR_APTPL_MAX_TPORT_LEN) { |
1575 | printk(KERN_ERR "APTPL metadata target_node=" | |
1576 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", | |
1577 | PR_APTPL_MAX_TPORT_LEN); | |
1578 | ret = -EINVAL; | |
1579 | break; | |
1580 | } | |
1581 | break; | |
1582 | case Opt_tpgt: | |
1583 | match_int(args, &arg); | |
1584 | tpgt = (u16)arg; | |
1585 | break; | |
1586 | case Opt_port_rtpi: | |
1587 | match_int(args, &arg); | |
1588 | port_rpti = (u16)arg; | |
1589 | break; | |
1590 | case Opt_target_lun: | |
1591 | match_int(args, &arg); | |
1592 | target_lun = (u32)arg; | |
1593 | break; | |
1594 | default: | |
1595 | break; | |
1596 | } | |
1597 | } | |
1598 | ||
1599 | if (!(i_port) || !(t_port) || !(sa_res_key)) { | |
1600 | printk(KERN_ERR "Illegal parameters for APTPL registration\n"); | |
1601 | ret = -EINVAL; | |
1602 | goto out; | |
1603 | } | |
1604 | ||
1605 | if (res_holder && !(type)) { | |
1606 | printk(KERN_ERR "Illegal PR type: 0x%02x for reservation" | |
1607 | " holder\n", type); | |
1608 | ret = -EINVAL; | |
1609 | goto out; | |
1610 | } | |
1611 | ||
1612 | ret = core_scsi3_alloc_aptpl_registration(T10_RES(su_dev), sa_res_key, | |
1613 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, | |
1614 | res_holder, all_tg_pt, type); | |
1615 | out: | |
6d180253 JJ |
1616 | kfree(i_fabric); |
1617 | kfree(i_port); | |
1618 | kfree(isid); | |
1619 | kfree(t_fabric); | |
1620 | kfree(t_port); | |
c66ac9db NB |
1621 | kfree(orig); |
1622 | return (ret == 0) ? count : ret; | |
1623 | } | |
1624 | ||
1625 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1626 | ||
1627 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); | |
1628 | ||
1629 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1630 | &target_core_dev_pr_res_holder.attr, | |
1631 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1632 | &target_core_dev_pr_res_pr_generation.attr, | |
1633 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1634 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1635 | &target_core_dev_pr_res_pr_type.attr, | |
1636 | &target_core_dev_pr_res_type.attr, | |
1637 | &target_core_dev_pr_res_aptpl_active.attr, | |
1638 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1639 | NULL, | |
1640 | }; | |
1641 | ||
1642 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1643 | .show_attribute = target_core_dev_pr_attr_show, | |
1644 | .store_attribute = target_core_dev_pr_attr_store, | |
1645 | }; | |
1646 | ||
1647 | static struct config_item_type target_core_dev_pr_cit = { | |
1648 | .ct_item_ops = &target_core_dev_pr_ops, | |
1649 | .ct_attrs = target_core_dev_pr_attrs, | |
1650 | .ct_owner = THIS_MODULE, | |
1651 | }; | |
1652 | ||
1653 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1654 | ||
1655 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1656 | ||
1657 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1658 | { | |
1659 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1660 | struct se_hba *hba = se_dev->se_dev_hba; | |
1661 | struct se_subsystem_api *t = hba->transport; | |
1662 | int bl = 0; | |
1663 | ssize_t read_bytes = 0; | |
1664 | ||
1665 | if (!(se_dev->se_dev_ptr)) | |
1666 | return -ENODEV; | |
1667 | ||
1668 | transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); | |
1669 | read_bytes += bl; | |
1670 | read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); | |
1671 | return read_bytes; | |
1672 | } | |
1673 | ||
1674 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1675 | .attr = { .ca_owner = THIS_MODULE, | |
1676 | .ca_name = "info", | |
1677 | .ca_mode = S_IRUGO }, | |
1678 | .show = target_core_show_dev_info, | |
1679 | .store = NULL, | |
1680 | }; | |
1681 | ||
1682 | static ssize_t target_core_store_dev_control( | |
1683 | void *p, | |
1684 | const char *page, | |
1685 | size_t count) | |
1686 | { | |
1687 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1688 | struct se_hba *hba = se_dev->se_dev_hba; | |
1689 | struct se_subsystem_api *t = hba->transport; | |
1690 | ||
1691 | if (!(se_dev->se_dev_su_ptr)) { | |
1692 | printk(KERN_ERR "Unable to locate struct se_subsystem_dev>se" | |
1693 | "_dev_su_ptr\n"); | |
1694 | return -EINVAL; | |
1695 | } | |
1696 | ||
1697 | return t->set_configfs_dev_params(hba, se_dev, page, count); | |
1698 | } | |
1699 | ||
1700 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1701 | .attr = { .ca_owner = THIS_MODULE, | |
1702 | .ca_name = "control", | |
1703 | .ca_mode = S_IWUSR }, | |
1704 | .show = NULL, | |
1705 | .store = target_core_store_dev_control, | |
1706 | }; | |
1707 | ||
1708 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1709 | { | |
1710 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1711 | ||
1712 | if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) | |
1713 | return 0; | |
1714 | ||
1715 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); | |
1716 | } | |
1717 | ||
1718 | static ssize_t target_core_store_dev_alias( | |
1719 | void *p, | |
1720 | const char *page, | |
1721 | size_t count) | |
1722 | { | |
1723 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1724 | struct se_hba *hba = se_dev->se_dev_hba; | |
1725 | ssize_t read_bytes; | |
1726 | ||
1727 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
1728 | printk(KERN_ERR "alias count: %d exceeds" | |
1729 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, | |
1730 | SE_DEV_ALIAS_LEN-1); | |
1731 | return -EINVAL; | |
1732 | } | |
1733 | ||
1734 | se_dev->su_dev_flags |= SDF_USING_ALIAS; | |
1735 | read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, | |
1736 | "%s", page); | |
1737 | ||
1738 | printk(KERN_INFO "Target_Core_ConfigFS: %s/%s set alias: %s\n", | |
1739 | config_item_name(&hba->hba_group.cg_item), | |
1740 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1741 | se_dev->se_dev_alias); | |
1742 | ||
1743 | return read_bytes; | |
1744 | } | |
1745 | ||
1746 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1747 | .attr = { .ca_owner = THIS_MODULE, | |
1748 | .ca_name = "alias", | |
1749 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1750 | .show = target_core_show_dev_alias, | |
1751 | .store = target_core_store_dev_alias, | |
1752 | }; | |
1753 | ||
1754 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1755 | { | |
1756 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1757 | ||
1758 | if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) | |
1759 | return 0; | |
1760 | ||
1761 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); | |
1762 | } | |
1763 | ||
1764 | static ssize_t target_core_store_dev_udev_path( | |
1765 | void *p, | |
1766 | const char *page, | |
1767 | size_t count) | |
1768 | { | |
1769 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1770 | struct se_hba *hba = se_dev->se_dev_hba; | |
1771 | ssize_t read_bytes; | |
1772 | ||
1773 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
1774 | printk(KERN_ERR "udev_path count: %d exceeds" | |
1775 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, | |
1776 | SE_UDEV_PATH_LEN-1); | |
1777 | return -EINVAL; | |
1778 | } | |
1779 | ||
1780 | se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; | |
1781 | read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, | |
1782 | "%s", page); | |
1783 | ||
1784 | printk(KERN_INFO "Target_Core_ConfigFS: %s/%s set udev_path: %s\n", | |
1785 | config_item_name(&hba->hba_group.cg_item), | |
1786 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1787 | se_dev->se_dev_udev_path); | |
1788 | ||
1789 | return read_bytes; | |
1790 | } | |
1791 | ||
1792 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1793 | .attr = { .ca_owner = THIS_MODULE, | |
1794 | .ca_name = "udev_path", | |
1795 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1796 | .show = target_core_show_dev_udev_path, | |
1797 | .store = target_core_store_dev_udev_path, | |
1798 | }; | |
1799 | ||
1800 | static ssize_t target_core_store_dev_enable( | |
1801 | void *p, | |
1802 | const char *page, | |
1803 | size_t count) | |
1804 | { | |
1805 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1806 | struct se_device *dev; | |
1807 | struct se_hba *hba = se_dev->se_dev_hba; | |
1808 | struct se_subsystem_api *t = hba->transport; | |
1809 | char *ptr; | |
1810 | ||
1811 | ptr = strstr(page, "1"); | |
1812 | if (!(ptr)) { | |
1813 | printk(KERN_ERR "For dev_enable ops, only valid value" | |
1814 | " is \"1\"\n"); | |
1815 | return -EINVAL; | |
1816 | } | |
1817 | if ((se_dev->se_dev_ptr)) { | |
1818 | printk(KERN_ERR "se_dev->se_dev_ptr already set for storage" | |
1819 | " object\n"); | |
1820 | return -EEXIST; | |
1821 | } | |
1822 | ||
1823 | if (t->check_configfs_dev_params(hba, se_dev) < 0) | |
1824 | return -EINVAL; | |
1825 | ||
1826 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
613640e4 NB |
1827 | if (IS_ERR(dev)) |
1828 | return PTR_ERR(dev); | |
1829 | else if (!dev) | |
c66ac9db NB |
1830 | return -EINVAL; |
1831 | ||
1832 | se_dev->se_dev_ptr = dev; | |
1833 | printk(KERN_INFO "Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" | |
1834 | " %p\n", se_dev->se_dev_ptr); | |
1835 | ||
1836 | return count; | |
1837 | } | |
1838 | ||
1839 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1840 | .attr = { .ca_owner = THIS_MODULE, | |
1841 | .ca_name = "enable", | |
1842 | .ca_mode = S_IWUSR }, | |
1843 | .show = NULL, | |
1844 | .store = target_core_store_dev_enable, | |
1845 | }; | |
1846 | ||
1847 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1848 | { | |
1849 | struct se_device *dev; | |
1850 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1851 | struct config_item *lu_ci; | |
1852 | struct t10_alua_lu_gp *lu_gp; | |
1853 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1854 | ssize_t len = 0; | |
1855 | ||
1856 | dev = su_dev->se_dev_ptr; | |
1857 | if (!(dev)) | |
1858 | return -ENODEV; | |
1859 | ||
1860 | if (T10_ALUA(su_dev)->alua_type != SPC3_ALUA_EMULATED) | |
1861 | return len; | |
1862 | ||
1863 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
1864 | if (!(lu_gp_mem)) { | |
1865 | printk(KERN_ERR "NULL struct se_device->dev_alua_lu_gp_mem" | |
1866 | " pointer\n"); | |
1867 | return -EINVAL; | |
1868 | } | |
1869 | ||
1870 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1871 | lu_gp = lu_gp_mem->lu_gp; | |
1872 | if ((lu_gp)) { | |
1873 | lu_ci = &lu_gp->lu_gp_group.cg_item; | |
1874 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1875 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1876 | } | |
1877 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1878 | ||
1879 | return len; | |
1880 | } | |
1881 | ||
1882 | static ssize_t target_core_store_alua_lu_gp( | |
1883 | void *p, | |
1884 | const char *page, | |
1885 | size_t count) | |
1886 | { | |
1887 | struct se_device *dev; | |
1888 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1889 | struct se_hba *hba = su_dev->se_dev_hba; | |
1890 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; | |
1891 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1892 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1893 | int move = 0; | |
1894 | ||
1895 | dev = su_dev->se_dev_ptr; | |
1896 | if (!(dev)) | |
1897 | return -ENODEV; | |
1898 | ||
1899 | if (T10_ALUA(su_dev)->alua_type != SPC3_ALUA_EMULATED) { | |
1900 | printk(KERN_WARNING "SPC3_ALUA_EMULATED not enabled for %s/%s\n", | |
1901 | config_item_name(&hba->hba_group.cg_item), | |
1902 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
1903 | return -EINVAL; | |
1904 | } | |
1905 | if (count > LU_GROUP_NAME_BUF) { | |
1906 | printk(KERN_ERR "ALUA LU Group Alias too large!\n"); | |
1907 | return -EINVAL; | |
1908 | } | |
1909 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1910 | memcpy(buf, page, count); | |
1911 | /* | |
1912 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1913 | * making a new group association. | |
1914 | */ | |
1915 | if (strcmp(strstrip(buf), "NULL")) { | |
1916 | /* | |
1917 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1918 | * struct t10_alua_lu_gp. This reference is released with | |
1919 | * core_alua_get_lu_gp_by_name below(). | |
1920 | */ | |
1921 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
1922 | if (!(lu_gp_new)) | |
1923 | return -ENODEV; | |
1924 | } | |
1925 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
1926 | if (!(lu_gp_mem)) { | |
1927 | if (lu_gp_new) | |
1928 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1929 | printk(KERN_ERR "NULL struct se_device->dev_alua_lu_gp_mem" | |
1930 | " pointer\n"); | |
1931 | return -EINVAL; | |
1932 | } | |
1933 | ||
1934 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1935 | lu_gp = lu_gp_mem->lu_gp; | |
1936 | if ((lu_gp)) { | |
1937 | /* | |
1938 | * Clearing an existing lu_gp association, and replacing | |
1939 | * with NULL | |
1940 | */ | |
1941 | if (!(lu_gp_new)) { | |
1942 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing %s/%s" | |
1943 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" | |
1944 | " %hu\n", | |
1945 | config_item_name(&hba->hba_group.cg_item), | |
1946 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1947 | config_item_name(&lu_gp->lu_gp_group.cg_item), | |
1948 | lu_gp->lu_gp_id); | |
1949 | ||
1950 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1951 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1952 | ||
1953 | return count; | |
1954 | } | |
1955 | /* | |
1956 | * Removing existing association of lu_gp_mem with lu_gp | |
1957 | */ | |
1958 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1959 | move = 1; | |
1960 | } | |
1961 | /* | |
1962 | * Associate lu_gp_mem with lu_gp_new. | |
1963 | */ | |
1964 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1965 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1966 | ||
1967 | printk(KERN_INFO "Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" | |
1968 | " core/alua/lu_gps/%s, ID: %hu\n", | |
1969 | (move) ? "Moving" : "Adding", | |
1970 | config_item_name(&hba->hba_group.cg_item), | |
1971 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1972 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), | |
1973 | lu_gp_new->lu_gp_id); | |
1974 | ||
1975 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1976 | return count; | |
1977 | } | |
1978 | ||
1979 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1980 | .attr = { .ca_owner = THIS_MODULE, | |
1981 | .ca_name = "alua_lu_gp", | |
1982 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1983 | .show = target_core_show_alua_lu_gp, | |
1984 | .store = target_core_store_alua_lu_gp, | |
1985 | }; | |
1986 | ||
1987 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1988 | &target_core_attr_dev_info.attr, | |
1989 | &target_core_attr_dev_control.attr, | |
1990 | &target_core_attr_dev_alias.attr, | |
1991 | &target_core_attr_dev_udev_path.attr, | |
1992 | &target_core_attr_dev_enable.attr, | |
1993 | &target_core_attr_dev_alua_lu_gp.attr, | |
1994 | NULL, | |
1995 | }; | |
1996 | ||
1997 | static void target_core_dev_release(struct config_item *item) | |
1998 | { | |
1999 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2000 | struct se_subsystem_dev, se_dev_group); | |
1f6fe7cb NB |
2001 | struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); |
2002 | struct se_subsystem_api *t = hba->transport; | |
2003 | struct config_group *dev_cg = &se_dev->se_dev_group; | |
c66ac9db | 2004 | |
c66ac9db | 2005 | kfree(dev_cg->default_groups); |
1f6fe7cb NB |
2006 | /* |
2007 | * This pointer will set when the storage is enabled with: | |
2008 | *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` | |
2009 | */ | |
2010 | if (se_dev->se_dev_ptr) { | |
2011 | printk(KERN_INFO "Target_Core_ConfigFS: Calling se_free_" | |
2012 | "virtual_device() for se_dev_ptr: %p\n", | |
2013 | se_dev->se_dev_ptr); | |
2014 | ||
2015 | se_free_virtual_device(se_dev->se_dev_ptr, hba); | |
2016 | } else { | |
2017 | /* | |
2018 | * Release struct se_subsystem_dev->se_dev_su_ptr.. | |
2019 | */ | |
2020 | printk(KERN_INFO "Target_Core_ConfigFS: Calling t->free_" | |
2021 | "device() for se_dev_su_ptr: %p\n", | |
2022 | se_dev->se_dev_su_ptr); | |
2023 | ||
2024 | t->free_device(se_dev->se_dev_su_ptr); | |
2025 | } | |
2026 | ||
2027 | printk(KERN_INFO "Target_Core_ConfigFS: Deallocating se_subsystem" | |
2028 | "_dev_t: %p\n", se_dev); | |
2029 | kfree(se_dev); | |
c66ac9db NB |
2030 | } |
2031 | ||
2032 | static ssize_t target_core_dev_show(struct config_item *item, | |
2033 | struct configfs_attribute *attr, | |
2034 | char *page) | |
2035 | { | |
2036 | struct se_subsystem_dev *se_dev = container_of( | |
2037 | to_config_group(item), struct se_subsystem_dev, | |
2038 | se_dev_group); | |
2039 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2040 | attr, struct target_core_configfs_attribute, attr); | |
2041 | ||
2042 | if (!(tc_attr->show)) | |
2043 | return -EINVAL; | |
2044 | ||
2045 | return tc_attr->show((void *)se_dev, page); | |
2046 | } | |
2047 | ||
2048 | static ssize_t target_core_dev_store(struct config_item *item, | |
2049 | struct configfs_attribute *attr, | |
2050 | const char *page, size_t count) | |
2051 | { | |
2052 | struct se_subsystem_dev *se_dev = container_of( | |
2053 | to_config_group(item), struct se_subsystem_dev, | |
2054 | se_dev_group); | |
2055 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2056 | attr, struct target_core_configfs_attribute, attr); | |
2057 | ||
2058 | if (!(tc_attr->store)) | |
2059 | return -EINVAL; | |
2060 | ||
2061 | return tc_attr->store((void *)se_dev, page, count); | |
2062 | } | |
2063 | ||
2064 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2065 | .release = target_core_dev_release, | |
2066 | .show_attribute = target_core_dev_show, | |
2067 | .store_attribute = target_core_dev_store, | |
2068 | }; | |
2069 | ||
2070 | static struct config_item_type target_core_dev_cit = { | |
2071 | .ct_item_ops = &target_core_dev_item_ops, | |
2072 | .ct_attrs = lio_core_dev_attrs, | |
2073 | .ct_owner = THIS_MODULE, | |
2074 | }; | |
2075 | ||
2076 | /* End functions for struct config_item_type target_core_dev_cit */ | |
2077 | ||
2078 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2079 | ||
2080 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2081 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2082 | static struct target_core_alua_lu_gp_attribute \ | |
2083 | target_core_alua_lu_gp_##_name = \ | |
2084 | __CONFIGFS_EATTR(_name, _mode, \ | |
2085 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2086 | target_core_alua_lu_gp_store_attr_##_name); | |
2087 | ||
2088 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2089 | static struct target_core_alua_lu_gp_attribute \ | |
2090 | target_core_alua_lu_gp_##_name = \ | |
2091 | __CONFIGFS_EATTR_RO(_name, \ | |
2092 | target_core_alua_lu_gp_show_attr_##_name); | |
2093 | ||
2094 | /* | |
2095 | * lu_gp_id | |
2096 | */ | |
2097 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2098 | struct t10_alua_lu_gp *lu_gp, | |
2099 | char *page) | |
2100 | { | |
2101 | if (!(lu_gp->lu_gp_valid_id)) | |
2102 | return 0; | |
2103 | ||
2104 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2105 | } | |
2106 | ||
2107 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2108 | struct t10_alua_lu_gp *lu_gp, | |
2109 | const char *page, | |
2110 | size_t count) | |
2111 | { | |
2112 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2113 | unsigned long lu_gp_id; | |
2114 | int ret; | |
2115 | ||
2116 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
2117 | if (ret < 0) { | |
2118 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
2119 | " lu_gp_id\n", ret); | |
2120 | return -EINVAL; | |
2121 | } | |
2122 | if (lu_gp_id > 0x0000ffff) { | |
2123 | printk(KERN_ERR "ALUA lu_gp_id: %lu exceeds maximum:" | |
2124 | " 0x0000ffff\n", lu_gp_id); | |
2125 | return -EINVAL; | |
2126 | } | |
2127 | ||
2128 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2129 | if (ret < 0) | |
2130 | return -EINVAL; | |
2131 | ||
2132 | printk(KERN_INFO "Target_Core_ConfigFS: Set ALUA Logical Unit" | |
2133 | " Group: core/alua/lu_gps/%s to ID: %hu\n", | |
2134 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2135 | lu_gp->lu_gp_id); | |
2136 | ||
2137 | return count; | |
2138 | } | |
2139 | ||
2140 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2141 | ||
2142 | /* | |
2143 | * members | |
2144 | */ | |
2145 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2146 | struct t10_alua_lu_gp *lu_gp, | |
2147 | char *page) | |
2148 | { | |
2149 | struct se_device *dev; | |
2150 | struct se_hba *hba; | |
2151 | struct se_subsystem_dev *su_dev; | |
2152 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2153 | ssize_t len = 0, cur_len; | |
2154 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2155 | ||
2156 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2157 | ||
2158 | spin_lock(&lu_gp->lu_gp_lock); | |
2159 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2160 | dev = lu_gp_mem->lu_gp_mem_dev; | |
2161 | su_dev = dev->se_sub_dev; | |
2162 | hba = su_dev->se_dev_hba; | |
2163 | ||
2164 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2165 | config_item_name(&hba->hba_group.cg_item), | |
2166 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
2167 | cur_len++; /* Extra byte for NULL terminator */ | |
2168 | ||
2169 | if ((cur_len + len) > PAGE_SIZE) { | |
2170 | printk(KERN_WARNING "Ran out of lu_gp_show_attr" | |
2171 | "_members buffer\n"); | |
2172 | break; | |
2173 | } | |
2174 | memcpy(page+len, buf, cur_len); | |
2175 | len += cur_len; | |
2176 | } | |
2177 | spin_unlock(&lu_gp->lu_gp_lock); | |
2178 | ||
2179 | return len; | |
2180 | } | |
2181 | ||
2182 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2183 | ||
2184 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2185 | ||
2186 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2187 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2188 | &target_core_alua_lu_gp_members.attr, | |
2189 | NULL, | |
2190 | }; | |
2191 | ||
1f6fe7cb NB |
2192 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2193 | { | |
2194 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2195 | struct t10_alua_lu_gp, lu_gp_group); | |
2196 | ||
2197 | core_alua_free_lu_gp(lu_gp); | |
2198 | } | |
2199 | ||
c66ac9db | 2200 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2201 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2202 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2203 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2204 | }; | |
2205 | ||
2206 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2207 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2208 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2209 | .ct_owner = THIS_MODULE, | |
2210 | }; | |
2211 | ||
2212 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2213 | ||
2214 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2215 | ||
2216 | static struct config_group *target_core_alua_create_lu_gp( | |
2217 | struct config_group *group, | |
2218 | const char *name) | |
2219 | { | |
2220 | struct t10_alua_lu_gp *lu_gp; | |
2221 | struct config_group *alua_lu_gp_cg = NULL; | |
2222 | struct config_item *alua_lu_gp_ci = NULL; | |
2223 | ||
2224 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2225 | if (IS_ERR(lu_gp)) | |
2226 | return NULL; | |
2227 | ||
2228 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2229 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2230 | ||
2231 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2232 | &target_core_alua_lu_gp_cit); | |
2233 | ||
2234 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated ALUA Logical Unit" | |
2235 | " Group: core/alua/lu_gps/%s\n", | |
2236 | config_item_name(alua_lu_gp_ci)); | |
2237 | ||
2238 | return alua_lu_gp_cg; | |
2239 | ||
2240 | } | |
2241 | ||
2242 | static void target_core_alua_drop_lu_gp( | |
2243 | struct config_group *group, | |
2244 | struct config_item *item) | |
2245 | { | |
2246 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2247 | struct t10_alua_lu_gp, lu_gp_group); | |
2248 | ||
2249 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing ALUA Logical Unit" | |
2250 | " Group: core/alua/lu_gps/%s, ID: %hu\n", | |
2251 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2252 | /* |
2253 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2254 | * -> target_core_alua_lu_gp_release() | |
2255 | */ | |
c66ac9db | 2256 | config_item_put(item); |
c66ac9db NB |
2257 | } |
2258 | ||
2259 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2260 | .make_group = &target_core_alua_create_lu_gp, | |
2261 | .drop_item = &target_core_alua_drop_lu_gp, | |
2262 | }; | |
2263 | ||
2264 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2265 | .ct_item_ops = NULL, | |
2266 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2267 | .ct_owner = THIS_MODULE, | |
2268 | }; | |
2269 | ||
2270 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2271 | ||
2272 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2273 | ||
2274 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2275 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2276 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2277 | target_core_alua_tg_pt_gp_##_name = \ | |
2278 | __CONFIGFS_EATTR(_name, _mode, \ | |
2279 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2280 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2281 | ||
2282 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2283 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2284 | target_core_alua_tg_pt_gp_##_name = \ | |
2285 | __CONFIGFS_EATTR_RO(_name, \ | |
2286 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2287 | ||
2288 | /* | |
2289 | * alua_access_state | |
2290 | */ | |
2291 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2292 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2293 | char *page) | |
2294 | { | |
2295 | return sprintf(page, "%d\n", | |
2296 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2297 | } | |
2298 | ||
2299 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2300 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2301 | const char *page, | |
2302 | size_t count) | |
2303 | { | |
2304 | struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; | |
2305 | unsigned long tmp; | |
2306 | int new_state, ret; | |
2307 | ||
2308 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) { | |
2309 | printk(KERN_ERR "Unable to do implict ALUA on non valid" | |
2310 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); | |
2311 | return -EINVAL; | |
2312 | } | |
2313 | ||
2314 | ret = strict_strtoul(page, 0, &tmp); | |
2315 | if (ret < 0) { | |
2316 | printk("Unable to extract new ALUA access state from" | |
2317 | " %s\n", page); | |
2318 | return -EINVAL; | |
2319 | } | |
2320 | new_state = (int)tmp; | |
2321 | ||
2322 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
2323 | printk(KERN_ERR "Unable to process implict configfs ALUA" | |
2324 | " transition while TPGS_IMPLICT_ALUA is diabled\n"); | |
2325 | return -EINVAL; | |
2326 | } | |
2327 | ||
2328 | ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, | |
2329 | NULL, NULL, new_state, 0); | |
2330 | return (!ret) ? count : -EINVAL; | |
2331 | } | |
2332 | ||
2333 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2334 | ||
2335 | /* | |
2336 | * alua_access_status | |
2337 | */ | |
2338 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2339 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2340 | char *page) | |
2341 | { | |
2342 | return sprintf(page, "%s\n", | |
2343 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2344 | } | |
2345 | ||
2346 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2347 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2348 | const char *page, | |
2349 | size_t count) | |
2350 | { | |
2351 | unsigned long tmp; | |
2352 | int new_status, ret; | |
2353 | ||
2354 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) { | |
2355 | printk(KERN_ERR "Unable to do set ALUA access status on non" | |
2356 | " valid tg_pt_gp ID: %hu\n", | |
2357 | tg_pt_gp->tg_pt_gp_valid_id); | |
2358 | return -EINVAL; | |
2359 | } | |
2360 | ||
2361 | ret = strict_strtoul(page, 0, &tmp); | |
2362 | if (ret < 0) { | |
2363 | printk(KERN_ERR "Unable to extract new ALUA access status" | |
2364 | " from %s\n", page); | |
2365 | return -EINVAL; | |
2366 | } | |
2367 | new_status = (int)tmp; | |
2368 | ||
2369 | if ((new_status != ALUA_STATUS_NONE) && | |
2370 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2371 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
2372 | printk(KERN_ERR "Illegal ALUA access status: 0x%02x\n", | |
2373 | new_status); | |
2374 | return -EINVAL; | |
2375 | } | |
2376 | ||
2377 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2378 | return count; | |
2379 | } | |
2380 | ||
2381 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2382 | ||
2383 | /* | |
2384 | * alua_access_type | |
2385 | */ | |
2386 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2387 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2388 | char *page) | |
2389 | { | |
2390 | return core_alua_show_access_type(tg_pt_gp, page); | |
2391 | } | |
2392 | ||
2393 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2394 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2395 | const char *page, | |
2396 | size_t count) | |
2397 | { | |
2398 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2399 | } | |
2400 | ||
2401 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2402 | ||
2403 | /* | |
2404 | * alua_write_metadata | |
2405 | */ | |
2406 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2407 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2408 | char *page) | |
2409 | { | |
2410 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2411 | } | |
2412 | ||
2413 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2414 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2415 | const char *page, | |
2416 | size_t count) | |
2417 | { | |
2418 | unsigned long tmp; | |
2419 | int ret; | |
2420 | ||
2421 | ret = strict_strtoul(page, 0, &tmp); | |
2422 | if (ret < 0) { | |
2423 | printk(KERN_ERR "Unable to extract alua_write_metadata\n"); | |
2424 | return -EINVAL; | |
2425 | } | |
2426 | ||
2427 | if ((tmp != 0) && (tmp != 1)) { | |
2428 | printk(KERN_ERR "Illegal value for alua_write_metadata:" | |
2429 | " %lu\n", tmp); | |
2430 | return -EINVAL; | |
2431 | } | |
2432 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2433 | ||
2434 | return count; | |
2435 | } | |
2436 | ||
2437 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2438 | ||
2439 | ||
2440 | ||
2441 | /* | |
2442 | * nonop_delay_msecs | |
2443 | */ | |
2444 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2445 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2446 | char *page) | |
2447 | { | |
2448 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2449 | ||
2450 | } | |
2451 | ||
2452 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2453 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2454 | const char *page, | |
2455 | size_t count) | |
2456 | { | |
2457 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2458 | } | |
2459 | ||
2460 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2461 | ||
2462 | /* | |
2463 | * trans_delay_msecs | |
2464 | */ | |
2465 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2466 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2467 | char *page) | |
2468 | { | |
2469 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2470 | } | |
2471 | ||
2472 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2473 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2474 | const char *page, | |
2475 | size_t count) | |
2476 | { | |
2477 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2478 | } | |
2479 | ||
2480 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2481 | ||
2482 | /* | |
2483 | * preferred | |
2484 | */ | |
2485 | ||
2486 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2487 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2488 | char *page) | |
2489 | { | |
2490 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2491 | } | |
2492 | ||
2493 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2494 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2495 | const char *page, | |
2496 | size_t count) | |
2497 | { | |
2498 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2499 | } | |
2500 | ||
2501 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2502 | ||
2503 | /* | |
2504 | * tg_pt_gp_id | |
2505 | */ | |
2506 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2507 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2508 | char *page) | |
2509 | { | |
2510 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) | |
2511 | return 0; | |
2512 | ||
2513 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2514 | } | |
2515 | ||
2516 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2517 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2518 | const char *page, | |
2519 | size_t count) | |
2520 | { | |
2521 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2522 | unsigned long tg_pt_gp_id; | |
2523 | int ret; | |
2524 | ||
2525 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2526 | if (ret < 0) { | |
2527 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
2528 | " tg_pt_gp_id\n", ret); | |
2529 | return -EINVAL; | |
2530 | } | |
2531 | if (tg_pt_gp_id > 0x0000ffff) { | |
2532 | printk(KERN_ERR "ALUA tg_pt_gp_id: %lu exceeds maximum:" | |
2533 | " 0x0000ffff\n", tg_pt_gp_id); | |
2534 | return -EINVAL; | |
2535 | } | |
2536 | ||
2537 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2538 | if (ret < 0) | |
2539 | return -EINVAL; | |
2540 | ||
2541 | printk(KERN_INFO "Target_Core_ConfigFS: Set ALUA Target Port Group: " | |
2542 | "core/alua/tg_pt_gps/%s to ID: %hu\n", | |
2543 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2544 | tg_pt_gp->tg_pt_gp_id); | |
2545 | ||
2546 | return count; | |
2547 | } | |
2548 | ||
2549 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2550 | ||
2551 | /* | |
2552 | * members | |
2553 | */ | |
2554 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2555 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2556 | char *page) | |
2557 | { | |
2558 | struct se_port *port; | |
2559 | struct se_portal_group *tpg; | |
2560 | struct se_lun *lun; | |
2561 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2562 | ssize_t len = 0, cur_len; | |
2563 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2564 | ||
2565 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2566 | ||
2567 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2568 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2569 | tg_pt_gp_mem_list) { | |
2570 | port = tg_pt_gp_mem->tg_pt; | |
2571 | tpg = port->sep_tpg; | |
2572 | lun = port->sep_lun; | |
2573 | ||
2574 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
2575 | "/%s\n", TPG_TFO(tpg)->get_fabric_name(), | |
2576 | TPG_TFO(tpg)->tpg_get_wwn(tpg), | |
2577 | TPG_TFO(tpg)->tpg_get_tag(tpg), | |
2578 | config_item_name(&lun->lun_group.cg_item)); | |
2579 | cur_len++; /* Extra byte for NULL terminator */ | |
2580 | ||
2581 | if ((cur_len + len) > PAGE_SIZE) { | |
2582 | printk(KERN_WARNING "Ran out of lu_gp_show_attr" | |
2583 | "_members buffer\n"); | |
2584 | break; | |
2585 | } | |
2586 | memcpy(page+len, buf, cur_len); | |
2587 | len += cur_len; | |
2588 | } | |
2589 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2590 | ||
2591 | return len; | |
2592 | } | |
2593 | ||
2594 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2595 | ||
2596 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2597 | tg_pt_gp_group); | |
2598 | ||
2599 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2600 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2601 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2602 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2603 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2604 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2605 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
2606 | &target_core_alua_tg_pt_gp_preferred.attr, | |
2607 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2608 | &target_core_alua_tg_pt_gp_members.attr, | |
2609 | NULL, | |
2610 | }; | |
2611 | ||
1f6fe7cb NB |
2612 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2613 | { | |
2614 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2615 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2616 | ||
2617 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2618 | } | |
2619 | ||
c66ac9db | 2620 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2621 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2622 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2623 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2624 | }; | |
2625 | ||
2626 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2627 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2628 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2629 | .ct_owner = THIS_MODULE, | |
2630 | }; | |
2631 | ||
2632 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2633 | ||
2634 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2635 | ||
2636 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2637 | struct config_group *group, | |
2638 | const char *name) | |
2639 | { | |
2640 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2641 | alua_tg_pt_gps_group); | |
2642 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2643 | struct se_subsystem_dev *su_dev = alua->t10_sub_dev; | |
2644 | struct config_group *alua_tg_pt_gp_cg = NULL; | |
2645 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2646 | ||
2647 | tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); | |
2648 | if (!(tg_pt_gp)) | |
2649 | return NULL; | |
2650 | ||
2651 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2652 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2653 | ||
2654 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2655 | &target_core_alua_tg_pt_gp_cit); | |
2656 | ||
2657 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated ALUA Target Port" | |
2658 | " Group: alua/tg_pt_gps/%s\n", | |
2659 | config_item_name(alua_tg_pt_gp_ci)); | |
2660 | ||
2661 | return alua_tg_pt_gp_cg; | |
2662 | } | |
2663 | ||
2664 | static void target_core_alua_drop_tg_pt_gp( | |
2665 | struct config_group *group, | |
2666 | struct config_item *item) | |
2667 | { | |
2668 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2669 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2670 | ||
2671 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing ALUA Target Port" | |
2672 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", | |
2673 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2674 | /* |
2675 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2676 | * -> target_core_alua_tg_pt_gp_release(). | |
2677 | */ | |
c66ac9db | 2678 | config_item_put(item); |
c66ac9db NB |
2679 | } |
2680 | ||
2681 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2682 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2683 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2684 | }; | |
2685 | ||
2686 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2687 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2688 | .ct_owner = THIS_MODULE, | |
2689 | }; | |
2690 | ||
2691 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2692 | ||
2693 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2694 | ||
2695 | /* | |
2696 | * target_core_alua_cit is a ConfigFS group that lives under | |
2697 | * /sys/kernel/config/target/core/alua. There are default groups | |
2698 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2699 | * target_core_alua_cit in target_core_init_configfs() below. | |
2700 | */ | |
2701 | static struct config_item_type target_core_alua_cit = { | |
2702 | .ct_item_ops = NULL, | |
2703 | .ct_attrs = NULL, | |
2704 | .ct_owner = THIS_MODULE, | |
2705 | }; | |
2706 | ||
2707 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2708 | ||
12d23384 NB |
2709 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2710 | ||
2711 | static struct config_group *target_core_stat_mkdir( | |
2712 | struct config_group *group, | |
2713 | const char *name) | |
2714 | { | |
2715 | return ERR_PTR(-ENOSYS); | |
2716 | } | |
2717 | ||
2718 | static void target_core_stat_rmdir( | |
2719 | struct config_group *group, | |
2720 | struct config_item *item) | |
2721 | { | |
2722 | return; | |
2723 | } | |
2724 | ||
2725 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2726 | .make_group = &target_core_stat_mkdir, | |
2727 | .drop_item = &target_core_stat_rmdir, | |
2728 | }; | |
2729 | ||
2730 | static struct config_item_type target_core_stat_cit = { | |
2731 | .ct_group_ops = &target_core_stat_group_ops, | |
2732 | .ct_owner = THIS_MODULE, | |
2733 | }; | |
2734 | ||
2735 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2736 | ||
c66ac9db NB |
2737 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2738 | ||
2739 | static struct config_group *target_core_make_subdev( | |
2740 | struct config_group *group, | |
2741 | const char *name) | |
2742 | { | |
2743 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2744 | struct se_subsystem_dev *se_dev; | |
2745 | struct se_subsystem_api *t; | |
2746 | struct config_item *hba_ci = &group->cg_item; | |
2747 | struct se_hba *hba = item_to_hba(hba_ci); | |
2748 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; | |
12d23384 NB |
2749 | struct config_group *dev_stat_grp = NULL; |
2750 | int errno = -ENOMEM, ret; | |
c66ac9db | 2751 | |
12d23384 NB |
2752 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2753 | if (ret) | |
2754 | return ERR_PTR(ret); | |
c66ac9db NB |
2755 | /* |
2756 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2757 | */ | |
2758 | t = hba->transport; | |
2759 | ||
2760 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
2761 | if (!se_dev) { | |
2762 | printk(KERN_ERR "Unable to allocate memory for" | |
2763 | " struct se_subsystem_dev\n"); | |
2764 | goto unlock; | |
2765 | } | |
2766 | INIT_LIST_HEAD(&se_dev->g_se_dev_list); | |
2767 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); | |
2768 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
2769 | INIT_LIST_HEAD(&se_dev->t10_reservation.registration_list); | |
2770 | INIT_LIST_HEAD(&se_dev->t10_reservation.aptpl_reg_list); | |
2771 | spin_lock_init(&se_dev->t10_reservation.registration_lock); | |
2772 | spin_lock_init(&se_dev->t10_reservation.aptpl_reg_lock); | |
2773 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); | |
2774 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
2775 | spin_lock_init(&se_dev->se_dev_lock); | |
2776 | se_dev->t10_reservation.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; | |
2777 | se_dev->t10_wwn.t10_sub_dev = se_dev; | |
2778 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
2779 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
2780 | ||
2781 | se_dev->se_dev_hba = hba; | |
2782 | dev_cg = &se_dev->se_dev_group; | |
2783 | ||
12d23384 | 2784 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, |
c66ac9db NB |
2785 | GFP_KERNEL); |
2786 | if (!(dev_cg->default_groups)) | |
2787 | goto out; | |
2788 | /* | |
2789 | * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr | |
2790 | * for ->allocate_virtdevice() | |
2791 | * | |
2792 | * se_dev->se_dev_ptr will be set after ->create_virtdev() | |
2793 | * has been called successfully in the next level up in the | |
2794 | * configfs tree for device object's struct config_group. | |
2795 | */ | |
2796 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); | |
2797 | if (!(se_dev->se_dev_su_ptr)) { | |
2798 | printk(KERN_ERR "Unable to locate subsystem dependent pointer" | |
2799 | " from allocate_virtdevice()\n"); | |
2800 | goto out; | |
2801 | } | |
2802 | spin_lock(&se_global->g_device_lock); | |
2803 | list_add_tail(&se_dev->g_se_dev_list, &se_global->g_se_dev_list); | |
2804 | spin_unlock(&se_global->g_device_lock); | |
2805 | ||
2806 | config_group_init_type_name(&se_dev->se_dev_group, name, | |
2807 | &target_core_dev_cit); | |
2808 | config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", | |
2809 | &target_core_dev_attrib_cit); | |
2810 | config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", | |
2811 | &target_core_dev_pr_cit); | |
2812 | config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", | |
2813 | &target_core_dev_wwn_cit); | |
2814 | config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, | |
2815 | "alua", &target_core_alua_tg_pt_gps_cit); | |
12d23384 NB |
2816 | config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, |
2817 | "statistics", &target_core_stat_cit); | |
2818 | ||
c66ac9db NB |
2819 | dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; |
2820 | dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; | |
2821 | dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; | |
2822 | dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; | |
12d23384 NB |
2823 | dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; |
2824 | dev_cg->default_groups[5] = NULL; | |
c66ac9db | 2825 | /* |
12d23384 | 2826 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db NB |
2827 | */ |
2828 | tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); | |
2829 | if (!(tg_pt_gp)) | |
2830 | goto out; | |
2831 | ||
2832 | tg_pt_gp_cg = &T10_ALUA(se_dev)->alua_tg_pt_gps_group; | |
2833 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
2834 | GFP_KERNEL); | |
2835 | if (!(tg_pt_gp_cg->default_groups)) { | |
2836 | printk(KERN_ERR "Unable to allocate tg_pt_gp_cg->" | |
2837 | "default_groups\n"); | |
2838 | goto out; | |
2839 | } | |
2840 | ||
2841 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2842 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2843 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2844 | tg_pt_gp_cg->default_groups[1] = NULL; | |
2845 | T10_ALUA(se_dev)->default_tg_pt_gp = tg_pt_gp; | |
12d23384 NB |
2846 | /* |
2847 | * Add core/$HBA/$DEV/statistics/ default groups | |
2848 | */ | |
2849 | dev_stat_grp = &DEV_STAT_GRP(se_dev)->stat_group; | |
2850 | dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, | |
2851 | GFP_KERNEL); | |
2852 | if (!dev_stat_grp->default_groups) { | |
2853 | printk(KERN_ERR "Unable to allocate dev_stat_grp->default_groups\n"); | |
2854 | goto out; | |
2855 | } | |
2856 | target_stat_setup_dev_default_groups(se_dev); | |
c66ac9db NB |
2857 | |
2858 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" | |
2859 | " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); | |
2860 | ||
2861 | mutex_unlock(&hba->hba_access_mutex); | |
2862 | return &se_dev->se_dev_group; | |
2863 | out: | |
2864 | if (T10_ALUA(se_dev)->default_tg_pt_gp) { | |
2865 | core_alua_free_tg_pt_gp(T10_ALUA(se_dev)->default_tg_pt_gp); | |
2866 | T10_ALUA(se_dev)->default_tg_pt_gp = NULL; | |
2867 | } | |
12d23384 NB |
2868 | if (dev_stat_grp) |
2869 | kfree(dev_stat_grp->default_groups); | |
c66ac9db NB |
2870 | if (tg_pt_gp_cg) |
2871 | kfree(tg_pt_gp_cg->default_groups); | |
2872 | if (dev_cg) | |
2873 | kfree(dev_cg->default_groups); | |
2874 | if (se_dev->se_dev_su_ptr) | |
2875 | t->free_device(se_dev->se_dev_su_ptr); | |
2876 | kfree(se_dev); | |
2877 | unlock: | |
2878 | mutex_unlock(&hba->hba_access_mutex); | |
12d23384 | 2879 | return ERR_PTR(errno); |
c66ac9db NB |
2880 | } |
2881 | ||
2882 | static void target_core_drop_subdev( | |
2883 | struct config_group *group, | |
2884 | struct config_item *item) | |
2885 | { | |
2886 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2887 | struct se_subsystem_dev, se_dev_group); | |
2888 | struct se_hba *hba; | |
2889 | struct se_subsystem_api *t; | |
2890 | struct config_item *df_item; | |
12d23384 | 2891 | struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2892 | int i; |
c66ac9db NB |
2893 | |
2894 | hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); | |
2895 | ||
1f6fe7cb | 2896 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db NB |
2897 | t = hba->transport; |
2898 | ||
2899 | spin_lock(&se_global->g_device_lock); | |
2900 | list_del(&se_dev->g_se_dev_list); | |
2901 | spin_unlock(&se_global->g_device_lock); | |
2902 | ||
12d23384 NB |
2903 | dev_stat_grp = &DEV_STAT_GRP(se_dev)->stat_group; |
2904 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { | |
2905 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2906 | dev_stat_grp->default_groups[i] = NULL; | |
2907 | config_item_put(df_item); | |
2908 | } | |
2909 | kfree(dev_stat_grp->default_groups); | |
2910 | ||
c66ac9db NB |
2911 | tg_pt_gp_cg = &T10_ALUA(se_dev)->alua_tg_pt_gps_group; |
2912 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { | |
2913 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2914 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2915 | config_item_put(df_item); | |
2916 | } | |
2917 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2918 | /* |
2919 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2920 | * directly from target_core_alua_tg_pt_gp_release(). | |
2921 | */ | |
c66ac9db NB |
2922 | T10_ALUA(se_dev)->default_tg_pt_gp = NULL; |
2923 | ||
2924 | dev_cg = &se_dev->se_dev_group; | |
2925 | for (i = 0; dev_cg->default_groups[i]; i++) { | |
2926 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2927 | dev_cg->default_groups[i] = NULL; | |
2928 | config_item_put(df_item); | |
2929 | } | |
c66ac9db | 2930 | /* |
1f6fe7cb NB |
2931 | * The releasing of se_dev and associated se_dev->se_dev_ptr is done |
2932 | * from target_core_dev_item_ops->release() ->target_core_dev_release(). | |
c66ac9db | 2933 | */ |
1f6fe7cb | 2934 | config_item_put(item); |
c66ac9db | 2935 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2936 | } |
2937 | ||
2938 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2939 | .make_group = target_core_make_subdev, | |
2940 | .drop_item = target_core_drop_subdev, | |
2941 | }; | |
2942 | ||
2943 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2944 | #define SE_HBA_ATTR(_name, _mode) \ | |
2945 | static struct target_core_hba_attribute \ | |
2946 | target_core_hba_##_name = \ | |
2947 | __CONFIGFS_EATTR(_name, _mode, \ | |
2948 | target_core_hba_show_attr_##_name, \ | |
2949 | target_core_hba_store_attr_##_name); | |
2950 | ||
2951 | #define SE_HBA_ATTR_RO(_name) \ | |
2952 | static struct target_core_hba_attribute \ | |
2953 | target_core_hba_##_name = \ | |
2954 | __CONFIGFS_EATTR_RO(_name, \ | |
2955 | target_core_hba_show_attr_##_name); | |
2956 | ||
2957 | static ssize_t target_core_hba_show_attr_hba_info( | |
2958 | struct se_hba *hba, | |
2959 | char *page) | |
2960 | { | |
2961 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2962 | hba->hba_id, hba->transport->name, | |
2963 | TARGET_CORE_CONFIGFS_VERSION); | |
2964 | } | |
2965 | ||
2966 | SE_HBA_ATTR_RO(hba_info); | |
2967 | ||
2968 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2969 | char *page) | |
2970 | { | |
2971 | int hba_mode = 0; | |
2972 | ||
2973 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2974 | hba_mode = 1; | |
2975 | ||
2976 | return sprintf(page, "%d\n", hba_mode); | |
2977 | } | |
2978 | ||
2979 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2980 | const char *page, size_t count) | |
2981 | { | |
2982 | struct se_subsystem_api *transport = hba->transport; | |
2983 | unsigned long mode_flag; | |
2984 | int ret; | |
2985 | ||
2986 | if (transport->pmode_enable_hba == NULL) | |
2987 | return -EINVAL; | |
2988 | ||
2989 | ret = strict_strtoul(page, 0, &mode_flag); | |
2990 | if (ret < 0) { | |
2991 | printk(KERN_ERR "Unable to extract hba mode flag: %d\n", ret); | |
2992 | return -EINVAL; | |
2993 | } | |
2994 | ||
2995 | spin_lock(&hba->device_lock); | |
2996 | if (!(list_empty(&hba->hba_dev_list))) { | |
2997 | printk(KERN_ERR "Unable to set hba_mode with active devices\n"); | |
2998 | spin_unlock(&hba->device_lock); | |
2999 | return -EINVAL; | |
3000 | } | |
3001 | spin_unlock(&hba->device_lock); | |
3002 | ||
3003 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
3004 | if (ret < 0) | |
3005 | return -EINVAL; | |
3006 | if (ret > 0) | |
3007 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
3008 | else if (ret == 0) | |
3009 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
3010 | ||
3011 | return count; | |
3012 | } | |
3013 | ||
3014 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
3015 | ||
3016 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
3017 | ||
1f6fe7cb NB |
3018 | static void target_core_hba_release(struct config_item *item) |
3019 | { | |
3020 | struct se_hba *hba = container_of(to_config_group(item), | |
3021 | struct se_hba, hba_group); | |
3022 | core_delete_hba(hba); | |
3023 | } | |
3024 | ||
c66ac9db NB |
3025 | static struct configfs_attribute *target_core_hba_attrs[] = { |
3026 | &target_core_hba_hba_info.attr, | |
3027 | &target_core_hba_hba_mode.attr, | |
3028 | NULL, | |
3029 | }; | |
3030 | ||
3031 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3032 | .release = target_core_hba_release, |
c66ac9db NB |
3033 | .show_attribute = target_core_hba_attr_show, |
3034 | .store_attribute = target_core_hba_attr_store, | |
3035 | }; | |
3036 | ||
3037 | static struct config_item_type target_core_hba_cit = { | |
3038 | .ct_item_ops = &target_core_hba_item_ops, | |
3039 | .ct_group_ops = &target_core_hba_group_ops, | |
3040 | .ct_attrs = target_core_hba_attrs, | |
3041 | .ct_owner = THIS_MODULE, | |
3042 | }; | |
3043 | ||
3044 | static struct config_group *target_core_call_addhbatotarget( | |
3045 | struct config_group *group, | |
3046 | const char *name) | |
3047 | { | |
3048 | char *se_plugin_str, *str, *str2; | |
3049 | struct se_hba *hba; | |
3050 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3051 | unsigned long plugin_dep_id = 0; | |
3052 | int ret; | |
3053 | ||
3054 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
3055 | if (strlen(name) > TARGET_CORE_NAME_MAX_LEN) { | |
3056 | printk(KERN_ERR "Passed *name strlen(): %d exceeds" | |
3057 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), | |
3058 | TARGET_CORE_NAME_MAX_LEN); | |
3059 | return ERR_PTR(-ENAMETOOLONG); | |
3060 | } | |
3061 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3062 | ||
3063 | str = strstr(buf, "_"); | |
3064 | if (!(str)) { | |
3065 | printk(KERN_ERR "Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
3066 | return ERR_PTR(-EINVAL); | |
3067 | } | |
3068 | se_plugin_str = buf; | |
3069 | /* | |
3070 | * Special case for subsystem plugins that have "_" in their names. | |
3071 | * Namely rd_direct and rd_mcp.. | |
3072 | */ | |
3073 | str2 = strstr(str+1, "_"); | |
3074 | if ((str2)) { | |
3075 | *str2 = '\0'; /* Terminate for *se_plugin_str */ | |
3076 | str2++; /* Skip to start of plugin dependent ID */ | |
3077 | str = str2; | |
3078 | } else { | |
3079 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3080 | str++; /* Skip to start of plugin dependent ID */ | |
3081 | } | |
3082 | ||
3083 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
3084 | if (ret < 0) { | |
3085 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
3086 | " plugin_dep_id\n", ret); | |
3087 | return ERR_PTR(-EINVAL); | |
3088 | } | |
3089 | /* | |
3090 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3091 | */ | |
3092 | if (transport_subsystem_check_init() < 0) | |
3093 | return ERR_PTR(-EINVAL); | |
3094 | ||
3095 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3096 | if (IS_ERR(hba)) | |
3097 | return ERR_CAST(hba); | |
3098 | ||
3099 | config_group_init_type_name(&hba->hba_group, name, | |
3100 | &target_core_hba_cit); | |
3101 | ||
3102 | return &hba->hba_group; | |
3103 | } | |
3104 | ||
3105 | static void target_core_call_delhbafromtarget( | |
3106 | struct config_group *group, | |
3107 | struct config_item *item) | |
3108 | { | |
1f6fe7cb NB |
3109 | /* |
3110 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3111 | * -> target_core_hba_release() | |
3112 | */ | |
c66ac9db | 3113 | config_item_put(item); |
c66ac9db NB |
3114 | } |
3115 | ||
3116 | static struct configfs_group_operations target_core_group_ops = { | |
3117 | .make_group = target_core_call_addhbatotarget, | |
3118 | .drop_item = target_core_call_delhbafromtarget, | |
3119 | }; | |
3120 | ||
3121 | static struct config_item_type target_core_cit = { | |
3122 | .ct_item_ops = NULL, | |
3123 | .ct_group_ops = &target_core_group_ops, | |
3124 | .ct_attrs = NULL, | |
3125 | .ct_owner = THIS_MODULE, | |
3126 | }; | |
3127 | ||
3128 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3129 | ||
54550fab | 3130 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3131 | { |
3132 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3133 | struct config_group *lu_gp_cg = NULL; | |
3134 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3135 | struct t10_alua_lu_gp *lu_gp; |
3136 | int ret; | |
3137 | ||
3138 | printk(KERN_INFO "TARGET_CORE[0]: Loading Generic Kernel Storage" | |
3139 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", | |
3140 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3141 | ||
3142 | subsys = target_core_subsystem[0]; | |
3143 | config_group_init(&subsys->su_group); | |
3144 | mutex_init(&subsys->su_mutex); | |
3145 | ||
3146 | INIT_LIST_HEAD(&g_tf_list); | |
3147 | mutex_init(&g_tf_lock); | |
3148 | init_scsi_index_table(); | |
3149 | ret = init_se_global(); | |
3150 | if (ret < 0) | |
3151 | return -1; | |
3152 | /* | |
3153 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3154 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3155 | */ | |
3156 | target_cg = &subsys->su_group; | |
3157 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3158 | GFP_KERNEL); | |
3159 | if (!(target_cg->default_groups)) { | |
3160 | printk(KERN_ERR "Unable to allocate target_cg->default_groups\n"); | |
3161 | goto out_global; | |
3162 | } | |
3163 | ||
3164 | config_group_init_type_name(&se_global->target_core_hbagroup, | |
3165 | "core", &target_core_cit); | |
3166 | target_cg->default_groups[0] = &se_global->target_core_hbagroup; | |
3167 | target_cg->default_groups[1] = NULL; | |
3168 | /* | |
3169 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3170 | */ | |
3171 | hba_cg = &se_global->target_core_hbagroup; | |
3172 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3173 | GFP_KERNEL); | |
3174 | if (!(hba_cg->default_groups)) { | |
3175 | printk(KERN_ERR "Unable to allocate hba_cg->default_groups\n"); | |
3176 | goto out_global; | |
3177 | } | |
3178 | config_group_init_type_name(&se_global->alua_group, | |
3179 | "alua", &target_core_alua_cit); | |
3180 | hba_cg->default_groups[0] = &se_global->alua_group; | |
3181 | hba_cg->default_groups[1] = NULL; | |
3182 | /* | |
3183 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3184 | * groups under /sys/kernel/config/target/core/alua/ | |
3185 | */ | |
3186 | alua_cg = &se_global->alua_group; | |
3187 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3188 | GFP_KERNEL); | |
3189 | if (!(alua_cg->default_groups)) { | |
3190 | printk(KERN_ERR "Unable to allocate alua_cg->default_groups\n"); | |
3191 | goto out_global; | |
3192 | } | |
3193 | ||
3194 | config_group_init_type_name(&se_global->alua_lu_gps_group, | |
3195 | "lu_gps", &target_core_alua_lu_gps_cit); | |
3196 | alua_cg->default_groups[0] = &se_global->alua_lu_gps_group; | |
3197 | alua_cg->default_groups[1] = NULL; | |
3198 | /* | |
3199 | * Add core/alua/lu_gps/default_lu_gp | |
3200 | */ | |
3201 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
3202 | if (IS_ERR(lu_gp)) | |
3203 | goto out_global; | |
3204 | ||
3205 | lu_gp_cg = &se_global->alua_lu_gps_group; | |
3206 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3207 | GFP_KERNEL); | |
3208 | if (!(lu_gp_cg->default_groups)) { | |
3209 | printk(KERN_ERR "Unable to allocate lu_gp_cg->default_groups\n"); | |
3210 | goto out_global; | |
3211 | } | |
3212 | ||
3213 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3214 | &target_core_alua_lu_gp_cit); | |
3215 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3216 | lu_gp_cg->default_groups[1] = NULL; | |
3217 | se_global->default_lu_gp = lu_gp; | |
3218 | /* | |
3219 | * Register the target_core_mod subsystem with configfs. | |
3220 | */ | |
3221 | ret = configfs_register_subsystem(subsys); | |
3222 | if (ret < 0) { | |
3223 | printk(KERN_ERR "Error %d while registering subsystem %s\n", | |
3224 | ret, subsys->su_group.cg_item.ci_namebuf); | |
3225 | goto out_global; | |
3226 | } | |
3227 | printk(KERN_INFO "TARGET_CORE[0]: Initialized ConfigFS Fabric" | |
3228 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" | |
3229 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3230 | /* | |
3231 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3232 | */ | |
3233 | ret = rd_module_init(); | |
3234 | if (ret < 0) | |
3235 | goto out; | |
3236 | ||
3237 | if (core_dev_setup_virtual_lun0() < 0) | |
3238 | goto out; | |
3239 | ||
c66ac9db NB |
3240 | return 0; |
3241 | ||
3242 | out: | |
3243 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3244 | core_dev_release_virtual_lun0(); |
3245 | rd_module_exit(); | |
3246 | out_global: | |
3247 | if (se_global->default_lu_gp) { | |
3248 | core_alua_free_lu_gp(se_global->default_lu_gp); | |
3249 | se_global->default_lu_gp = NULL; | |
3250 | } | |
3251 | if (lu_gp_cg) | |
3252 | kfree(lu_gp_cg->default_groups); | |
3253 | if (alua_cg) | |
3254 | kfree(alua_cg->default_groups); | |
3255 | if (hba_cg) | |
3256 | kfree(hba_cg->default_groups); | |
3257 | kfree(target_cg->default_groups); | |
3258 | release_se_global(); | |
3259 | return -1; | |
3260 | } | |
3261 | ||
54550fab | 3262 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3263 | { |
3264 | struct configfs_subsystem *subsys; | |
3265 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3266 | struct config_item *item; | |
3267 | int i; | |
3268 | ||
3269 | se_global->in_shutdown = 1; | |
3270 | subsys = target_core_subsystem[0]; | |
3271 | ||
3272 | lu_gp_cg = &se_global->alua_lu_gps_group; | |
3273 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { | |
3274 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3275 | lu_gp_cg->default_groups[i] = NULL; | |
3276 | config_item_put(item); | |
3277 | } | |
3278 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3279 | lu_gp_cg->default_groups = NULL; |
c66ac9db NB |
3280 | |
3281 | alua_cg = &se_global->alua_group; | |
3282 | for (i = 0; alua_cg->default_groups[i]; i++) { | |
3283 | item = &alua_cg->default_groups[i]->cg_item; | |
3284 | alua_cg->default_groups[i] = NULL; | |
3285 | config_item_put(item); | |
3286 | } | |
3287 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3288 | alua_cg->default_groups = NULL; |
c66ac9db NB |
3289 | |
3290 | hba_cg = &se_global->target_core_hbagroup; | |
3291 | for (i = 0; hba_cg->default_groups[i]; i++) { | |
3292 | item = &hba_cg->default_groups[i]->cg_item; | |
3293 | hba_cg->default_groups[i] = NULL; | |
3294 | config_item_put(item); | |
3295 | } | |
3296 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3297 | hba_cg->default_groups = NULL; |
3298 | /* | |
3299 | * We expect subsys->su_group.default_groups to be released | |
3300 | * by configfs subsystem provider logic.. | |
3301 | */ | |
3302 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3303 | kfree(subsys->su_group.default_groups); |
3304 | ||
7c2bf6e9 NB |
3305 | core_alua_free_lu_gp(se_global->default_lu_gp); |
3306 | se_global->default_lu_gp = NULL; | |
3307 | ||
c66ac9db NB |
3308 | printk(KERN_INFO "TARGET_CORE[0]: Released ConfigFS Fabric" |
3309 | " Infrastructure\n"); | |
3310 | ||
c66ac9db NB |
3311 | core_dev_release_virtual_lun0(); |
3312 | rd_module_exit(); | |
3313 | release_se_global(); | |
3314 | ||
3315 | return; | |
3316 | } | |
3317 | ||
3318 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3319 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3320 | MODULE_LICENSE("GPL"); | |
3321 | ||
3322 | module_init(target_core_init_configfs); | |
3323 | module_exit(target_core_exit_configfs); |