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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> | |
e3d6f909 | 40 | #include <linux/spinlock.h> |
c66ac9db NB |
41 | |
42 | #include <target/target_core_base.h> | |
43 | #include <target/target_core_device.h> | |
44 | #include <target/target_core_transport.h> | |
45 | #include <target/target_core_fabric_ops.h> | |
46 | #include <target/target_core_fabric_configfs.h> | |
47 | #include <target/target_core_configfs.h> | |
48 | #include <target/configfs_macros.h> | |
49 | ||
50 | #include "target_core_alua.h" | |
51 | #include "target_core_hba.h" | |
52 | #include "target_core_pr.h" | |
53 | #include "target_core_rd.h" | |
12d23384 | 54 | #include "target_core_stat.h" |
c66ac9db | 55 | |
e3d6f909 AG |
56 | extern struct t10_alua_lu_gp *default_lu_gp; |
57 | ||
c66ac9db NB |
58 | static struct list_head g_tf_list; |
59 | static struct mutex g_tf_lock; | |
60 | ||
61 | struct target_core_configfs_attribute { | |
62 | struct configfs_attribute attr; | |
63 | ssize_t (*show)(void *, char *); | |
64 | ssize_t (*store)(void *, const char *, size_t); | |
65 | }; | |
66 | ||
e3d6f909 AG |
67 | static struct config_group target_core_hbagroup; |
68 | static struct config_group alua_group; | |
69 | static struct config_group alua_lu_gps_group; | |
70 | ||
71 | static DEFINE_SPINLOCK(se_device_lock); | |
72 | static LIST_HEAD(se_dev_list); | |
73 | ||
c66ac9db NB |
74 | static inline struct se_hba * |
75 | item_to_hba(struct config_item *item) | |
76 | { | |
77 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
78 | } | |
79 | ||
80 | /* | |
81 | * Attributes for /sys/kernel/config/target/ | |
82 | */ | |
83 | static ssize_t target_core_attr_show(struct config_item *item, | |
84 | struct configfs_attribute *attr, | |
85 | char *page) | |
86 | { | |
87 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
88 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
89 | utsname()->sysname, utsname()->machine); | |
90 | } | |
91 | ||
92 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
93 | .show_attribute = target_core_attr_show, | |
94 | }; | |
95 | ||
96 | static struct configfs_attribute target_core_item_attr_version = { | |
97 | .ca_owner = THIS_MODULE, | |
98 | .ca_name = "version", | |
99 | .ca_mode = S_IRUGO, | |
100 | }; | |
101 | ||
102 | static struct target_fabric_configfs *target_core_get_fabric( | |
103 | const char *name) | |
104 | { | |
105 | struct target_fabric_configfs *tf; | |
106 | ||
107 | if (!(name)) | |
108 | return NULL; | |
109 | ||
110 | mutex_lock(&g_tf_lock); | |
111 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
112 | if (!(strcmp(tf->tf_name, name))) { | |
113 | atomic_inc(&tf->tf_access_cnt); | |
114 | mutex_unlock(&g_tf_lock); | |
115 | return tf; | |
116 | } | |
117 | } | |
118 | mutex_unlock(&g_tf_lock); | |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
123 | /* | |
124 | * Called from struct target_core_group_ops->make_group() | |
125 | */ | |
126 | static struct config_group *target_core_register_fabric( | |
127 | struct config_group *group, | |
128 | const char *name) | |
129 | { | |
130 | struct target_fabric_configfs *tf; | |
131 | int ret; | |
132 | ||
133 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> group: %p name:" | |
134 | " %s\n", group, name); | |
135 | /* | |
136 | * Ensure that TCM subsystem plugins are loaded at this point for | |
137 | * using the RAMDISK_DR virtual LUN 0 and all other struct se_port | |
138 | * LUN symlinks. | |
139 | */ | |
140 | if (transport_subsystem_check_init() < 0) | |
141 | return ERR_PTR(-EINVAL); | |
142 | ||
143 | /* | |
144 | * Below are some hardcoded request_module() calls to automatically | |
145 | * local fabric modules when the following is called: | |
146 | * | |
147 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME | |
148 | * | |
149 | * Note that this does not limit which TCM fabric module can be | |
150 | * registered, but simply provids auto loading logic for modules with | |
151 | * mkdir(2) system calls with known TCM fabric modules. | |
152 | */ | |
153 | if (!(strncmp(name, "iscsi", 5))) { | |
154 | /* | |
155 | * Automatically load the LIO Target fabric module when the | |
156 | * following is called: | |
157 | * | |
158 | * mkdir -p $CONFIGFS/target/iscsi | |
159 | */ | |
160 | ret = request_module("iscsi_target_mod"); | |
161 | if (ret < 0) { | |
162 | printk(KERN_ERR "request_module() failed for" | |
163 | " iscsi_target_mod.ko: %d\n", ret); | |
164 | return ERR_PTR(-EINVAL); | |
165 | } | |
166 | } else if (!(strncmp(name, "loopback", 8))) { | |
167 | /* | |
168 | * Automatically load the tcm_loop fabric module when the | |
169 | * following is called: | |
170 | * | |
171 | * mkdir -p $CONFIGFS/target/loopback | |
172 | */ | |
173 | ret = request_module("tcm_loop"); | |
174 | if (ret < 0) { | |
175 | printk(KERN_ERR "request_module() failed for" | |
176 | " tcm_loop.ko: %d\n", ret); | |
177 | return ERR_PTR(-EINVAL); | |
178 | } | |
179 | } | |
180 | ||
181 | tf = target_core_get_fabric(name); | |
182 | if (!(tf)) { | |
183 | printk(KERN_ERR "target_core_get_fabric() failed for %s\n", | |
184 | name); | |
185 | return ERR_PTR(-EINVAL); | |
186 | } | |
187 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> Located fabric:" | |
188 | " %s\n", tf->tf_name); | |
189 | /* | |
190 | * On a successful target_core_get_fabric() look, the returned | |
191 | * struct target_fabric_configfs *tf will contain a usage reference. | |
192 | */ | |
193 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", | |
194 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
195 | ||
196 | tf->tf_group.default_groups = tf->tf_default_groups; | |
197 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
198 | tf->tf_group.default_groups[1] = NULL; | |
199 | ||
200 | config_group_init_type_name(&tf->tf_group, name, | |
201 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
202 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", | |
203 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); | |
204 | ||
205 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" | |
206 | " %s\n", tf->tf_group.cg_item.ci_name); | |
207 | /* | |
208 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
209 | */ | |
210 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
211 | tf->tf_fabric = &tf->tf_group.cg_item; | |
212 | printk(KERN_INFO "Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" | |
213 | " for %s\n", name); | |
214 | ||
215 | return &tf->tf_group; | |
216 | } | |
217 | ||
218 | /* | |
219 | * Called from struct target_core_group_ops->drop_item() | |
220 | */ | |
221 | static void target_core_deregister_fabric( | |
222 | struct config_group *group, | |
223 | struct config_item *item) | |
224 | { | |
225 | struct target_fabric_configfs *tf = container_of( | |
226 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
227 | struct config_group *tf_group; | |
228 | struct config_item *df_item; | |
229 | int i; | |
230 | ||
231 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" | |
232 | " tf list\n", config_item_name(item)); | |
233 | ||
234 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> located fabric:" | |
235 | " %s\n", tf->tf_name); | |
236 | atomic_dec(&tf->tf_access_cnt); | |
237 | ||
238 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing" | |
239 | " tf->tf_fabric for %s\n", tf->tf_name); | |
240 | tf->tf_fabric = NULL; | |
241 | ||
242 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing ci" | |
243 | " %s\n", config_item_name(item)); | |
244 | ||
245 | tf_group = &tf->tf_group; | |
246 | for (i = 0; tf_group->default_groups[i]; i++) { | |
247 | df_item = &tf_group->default_groups[i]->cg_item; | |
248 | tf_group->default_groups[i] = NULL; | |
249 | config_item_put(df_item); | |
250 | } | |
251 | config_item_put(item); | |
252 | } | |
253 | ||
254 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
255 | .make_group = &target_core_register_fabric, | |
256 | .drop_item = &target_core_deregister_fabric, | |
257 | }; | |
258 | ||
259 | /* | |
260 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
261 | */ | |
262 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
263 | &target_core_item_attr_version, | |
264 | NULL, | |
265 | }; | |
266 | ||
267 | /* | |
268 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
269 | */ | |
270 | static struct config_item_type target_core_fabrics_item = { | |
271 | .ct_item_ops = &target_core_fabric_item_ops, | |
272 | .ct_group_ops = &target_core_fabric_group_ops, | |
273 | .ct_attrs = target_core_fabric_item_attrs, | |
274 | .ct_owner = THIS_MODULE, | |
275 | }; | |
276 | ||
277 | static struct configfs_subsystem target_core_fabrics = { | |
278 | .su_group = { | |
279 | .cg_item = { | |
280 | .ci_namebuf = "target", | |
281 | .ci_type = &target_core_fabrics_item, | |
282 | }, | |
283 | }, | |
284 | }; | |
285 | ||
286 | static struct configfs_subsystem *target_core_subsystem[] = { | |
287 | &target_core_fabrics, | |
288 | NULL, | |
289 | }; | |
290 | ||
291 | /*############################################################################## | |
292 | // Start functions called by external Target Fabrics Modules | |
293 | //############################################################################*/ | |
294 | ||
295 | /* | |
296 | * First function called by fabric modules to: | |
297 | * | |
298 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
299 | * 2) Add struct target_fabric_configfs to g_tf_list | |
300 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
301 | * into target_fabric_configfs_register(). | |
302 | */ | |
303 | struct target_fabric_configfs *target_fabric_configfs_init( | |
304 | struct module *fabric_mod, | |
305 | const char *name) | |
306 | { | |
307 | struct target_fabric_configfs *tf; | |
308 | ||
c66ac9db NB |
309 | if (!(name)) { |
310 | printk(KERN_ERR "Unable to locate passed fabric name\n"); | |
e3d6f909 | 311 | return ERR_PTR(-EINVAL); |
c66ac9db | 312 | } |
60d645a4 | 313 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
c66ac9db NB |
314 | printk(KERN_ERR "Passed name: %s exceeds TARGET_FABRIC" |
315 | "_NAME_SIZE\n", name); | |
e3d6f909 | 316 | return ERR_PTR(-EINVAL); |
c66ac9db NB |
317 | } |
318 | ||
319 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
320 | if (!(tf)) | |
e3d6f909 | 321 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
322 | |
323 | INIT_LIST_HEAD(&tf->tf_list); | |
324 | atomic_set(&tf->tf_access_cnt, 0); | |
325 | /* | |
326 | * Setup the default generic struct config_item_type's (cits) in | |
327 | * struct target_fabric_configfs->tf_cit_tmpl | |
328 | */ | |
329 | tf->tf_module = fabric_mod; | |
330 | target_fabric_setup_cits(tf); | |
331 | ||
332 | tf->tf_subsys = target_core_subsystem[0]; | |
333 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
334 | ||
335 | mutex_lock(&g_tf_lock); | |
336 | list_add_tail(&tf->tf_list, &g_tf_list); | |
337 | mutex_unlock(&g_tf_lock); | |
338 | ||
339 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" | |
340 | ">>>>>>>>>>>>>>\n"); | |
341 | printk(KERN_INFO "Initialized struct target_fabric_configfs: %p for" | |
342 | " %s\n", tf, tf->tf_name); | |
343 | return tf; | |
344 | } | |
345 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
346 | ||
347 | /* | |
348 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
349 | */ | |
350 | void target_fabric_configfs_free( | |
351 | struct target_fabric_configfs *tf) | |
352 | { | |
353 | mutex_lock(&g_tf_lock); | |
354 | list_del(&tf->tf_list); | |
355 | mutex_unlock(&g_tf_lock); | |
356 | ||
357 | kfree(tf); | |
358 | } | |
359 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
360 | ||
361 | /* | |
362 | * Perform a sanity check of the passed tf->tf_ops before completing | |
363 | * TCM fabric module registration. | |
364 | */ | |
365 | static int target_fabric_tf_ops_check( | |
366 | struct target_fabric_configfs *tf) | |
367 | { | |
368 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
369 | ||
370 | if (!(tfo->get_fabric_name)) { | |
371 | printk(KERN_ERR "Missing tfo->get_fabric_name()\n"); | |
372 | return -EINVAL; | |
373 | } | |
374 | if (!(tfo->get_fabric_proto_ident)) { | |
375 | printk(KERN_ERR "Missing tfo->get_fabric_proto_ident()\n"); | |
376 | return -EINVAL; | |
377 | } | |
378 | if (!(tfo->tpg_get_wwn)) { | |
379 | printk(KERN_ERR "Missing tfo->tpg_get_wwn()\n"); | |
380 | return -EINVAL; | |
381 | } | |
382 | if (!(tfo->tpg_get_tag)) { | |
383 | printk(KERN_ERR "Missing tfo->tpg_get_tag()\n"); | |
384 | return -EINVAL; | |
385 | } | |
386 | if (!(tfo->tpg_get_default_depth)) { | |
387 | printk(KERN_ERR "Missing tfo->tpg_get_default_depth()\n"); | |
388 | return -EINVAL; | |
389 | } | |
390 | if (!(tfo->tpg_get_pr_transport_id)) { | |
391 | printk(KERN_ERR "Missing tfo->tpg_get_pr_transport_id()\n"); | |
392 | return -EINVAL; | |
393 | } | |
394 | if (!(tfo->tpg_get_pr_transport_id_len)) { | |
395 | printk(KERN_ERR "Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
396 | return -EINVAL; | |
397 | } | |
398 | if (!(tfo->tpg_check_demo_mode)) { | |
399 | printk(KERN_ERR "Missing tfo->tpg_check_demo_mode()\n"); | |
400 | return -EINVAL; | |
401 | } | |
402 | if (!(tfo->tpg_check_demo_mode_cache)) { | |
403 | printk(KERN_ERR "Missing tfo->tpg_check_demo_mode_cache()\n"); | |
404 | return -EINVAL; | |
405 | } | |
406 | if (!(tfo->tpg_check_demo_mode_write_protect)) { | |
407 | printk(KERN_ERR "Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
408 | return -EINVAL; | |
409 | } | |
410 | if (!(tfo->tpg_check_prod_mode_write_protect)) { | |
411 | printk(KERN_ERR "Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
412 | return -EINVAL; | |
413 | } | |
414 | if (!(tfo->tpg_alloc_fabric_acl)) { | |
415 | printk(KERN_ERR "Missing tfo->tpg_alloc_fabric_acl()\n"); | |
416 | return -EINVAL; | |
417 | } | |
418 | if (!(tfo->tpg_release_fabric_acl)) { | |
419 | printk(KERN_ERR "Missing tfo->tpg_release_fabric_acl()\n"); | |
420 | return -EINVAL; | |
421 | } | |
422 | if (!(tfo->tpg_get_inst_index)) { | |
423 | printk(KERN_ERR "Missing tfo->tpg_get_inst_index()\n"); | |
424 | return -EINVAL; | |
425 | } | |
35462975 CH |
426 | if (!tfo->release_cmd) { |
427 | printk(KERN_ERR "Missing tfo->release_cmd()\n"); | |
c66ac9db NB |
428 | return -EINVAL; |
429 | } | |
430 | if (!(tfo->shutdown_session)) { | |
431 | printk(KERN_ERR "Missing tfo->shutdown_session()\n"); | |
432 | return -EINVAL; | |
433 | } | |
434 | if (!(tfo->close_session)) { | |
435 | printk(KERN_ERR "Missing tfo->close_session()\n"); | |
436 | return -EINVAL; | |
437 | } | |
438 | if (!(tfo->stop_session)) { | |
439 | printk(KERN_ERR "Missing tfo->stop_session()\n"); | |
440 | return -EINVAL; | |
441 | } | |
442 | if (!(tfo->fall_back_to_erl0)) { | |
443 | printk(KERN_ERR "Missing tfo->fall_back_to_erl0()\n"); | |
444 | return -EINVAL; | |
445 | } | |
446 | if (!(tfo->sess_logged_in)) { | |
447 | printk(KERN_ERR "Missing tfo->sess_logged_in()\n"); | |
448 | return -EINVAL; | |
449 | } | |
450 | if (!(tfo->sess_get_index)) { | |
451 | printk(KERN_ERR "Missing tfo->sess_get_index()\n"); | |
452 | return -EINVAL; | |
453 | } | |
454 | if (!(tfo->write_pending)) { | |
455 | printk(KERN_ERR "Missing tfo->write_pending()\n"); | |
456 | return -EINVAL; | |
457 | } | |
458 | if (!(tfo->write_pending_status)) { | |
459 | printk(KERN_ERR "Missing tfo->write_pending_status()\n"); | |
460 | return -EINVAL; | |
461 | } | |
462 | if (!(tfo->set_default_node_attributes)) { | |
463 | printk(KERN_ERR "Missing tfo->set_default_node_attributes()\n"); | |
464 | return -EINVAL; | |
465 | } | |
466 | if (!(tfo->get_task_tag)) { | |
467 | printk(KERN_ERR "Missing tfo->get_task_tag()\n"); | |
468 | return -EINVAL; | |
469 | } | |
470 | if (!(tfo->get_cmd_state)) { | |
471 | printk(KERN_ERR "Missing tfo->get_cmd_state()\n"); | |
472 | return -EINVAL; | |
473 | } | |
c66ac9db NB |
474 | if (!(tfo->queue_data_in)) { |
475 | printk(KERN_ERR "Missing tfo->queue_data_in()\n"); | |
476 | return -EINVAL; | |
477 | } | |
478 | if (!(tfo->queue_status)) { | |
479 | printk(KERN_ERR "Missing tfo->queue_status()\n"); | |
480 | return -EINVAL; | |
481 | } | |
482 | if (!(tfo->queue_tm_rsp)) { | |
483 | printk(KERN_ERR "Missing tfo->queue_tm_rsp()\n"); | |
484 | return -EINVAL; | |
485 | } | |
486 | if (!(tfo->set_fabric_sense_len)) { | |
487 | printk(KERN_ERR "Missing tfo->set_fabric_sense_len()\n"); | |
488 | return -EINVAL; | |
489 | } | |
490 | if (!(tfo->get_fabric_sense_len)) { | |
491 | printk(KERN_ERR "Missing tfo->get_fabric_sense_len()\n"); | |
492 | return -EINVAL; | |
493 | } | |
494 | if (!(tfo->is_state_remove)) { | |
495 | printk(KERN_ERR "Missing tfo->is_state_remove()\n"); | |
496 | return -EINVAL; | |
497 | } | |
c66ac9db NB |
498 | /* |
499 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
500 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
501 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
502 | */ | |
503 | if (!(tfo->fabric_make_wwn)) { | |
504 | printk(KERN_ERR "Missing tfo->fabric_make_wwn()\n"); | |
505 | return -EINVAL; | |
506 | } | |
507 | if (!(tfo->fabric_drop_wwn)) { | |
508 | printk(KERN_ERR "Missing tfo->fabric_drop_wwn()\n"); | |
509 | return -EINVAL; | |
510 | } | |
511 | if (!(tfo->fabric_make_tpg)) { | |
512 | printk(KERN_ERR "Missing tfo->fabric_make_tpg()\n"); | |
513 | return -EINVAL; | |
514 | } | |
515 | if (!(tfo->fabric_drop_tpg)) { | |
516 | printk(KERN_ERR "Missing tfo->fabric_drop_tpg()\n"); | |
517 | return -EINVAL; | |
518 | } | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | /* | |
524 | * Called 2nd from fabric module with returned parameter of | |
525 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
526 | * | |
527 | * Upon a successful registration, the new fabric's struct config_item is | |
528 | * return. Also, a pointer to this struct is set in the passed | |
529 | * struct target_fabric_configfs. | |
530 | */ | |
531 | int target_fabric_configfs_register( | |
532 | struct target_fabric_configfs *tf) | |
533 | { | |
c66ac9db NB |
534 | int ret; |
535 | ||
536 | if (!(tf)) { | |
537 | printk(KERN_ERR "Unable to locate target_fabric_configfs" | |
538 | " pointer\n"); | |
539 | return -EINVAL; | |
540 | } | |
541 | if (!(tf->tf_subsys)) { | |
542 | printk(KERN_ERR "Unable to target struct config_subsystem" | |
543 | " pointer\n"); | |
544 | return -EINVAL; | |
545 | } | |
c66ac9db NB |
546 | ret = target_fabric_tf_ops_check(tf); |
547 | if (ret < 0) | |
548 | return ret; | |
549 | ||
550 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" | |
551 | ">>>>>>>>>>\n"); | |
552 | return 0; | |
553 | } | |
554 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
555 | ||
556 | void target_fabric_configfs_deregister( | |
557 | struct target_fabric_configfs *tf) | |
558 | { | |
c66ac9db NB |
559 | struct configfs_subsystem *su; |
560 | ||
561 | if (!(tf)) { | |
562 | printk(KERN_ERR "Unable to locate passed target_fabric_" | |
563 | "configfs\n"); | |
564 | return; | |
565 | } | |
566 | su = tf->tf_subsys; | |
567 | if (!(su)) { | |
568 | printk(KERN_ERR "Unable to locate passed tf->tf_subsys" | |
569 | " pointer\n"); | |
570 | return; | |
571 | } | |
c66ac9db NB |
572 | printk(KERN_INFO "<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
573 | ">>>>>>>>>>>>\n"); | |
574 | mutex_lock(&g_tf_lock); | |
575 | if (atomic_read(&tf->tf_access_cnt)) { | |
576 | mutex_unlock(&g_tf_lock); | |
577 | printk(KERN_ERR "Non zero tf->tf_access_cnt for fabric %s\n", | |
578 | tf->tf_name); | |
579 | BUG(); | |
580 | } | |
581 | list_del(&tf->tf_list); | |
582 | mutex_unlock(&g_tf_lock); | |
583 | ||
584 | printk(KERN_INFO "Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" | |
585 | " %s\n", tf->tf_name); | |
586 | tf->tf_module = NULL; | |
587 | tf->tf_subsys = NULL; | |
588 | kfree(tf); | |
589 | ||
590 | printk("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" | |
591 | ">>>>>\n"); | |
c66ac9db NB |
592 | } |
593 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
594 | ||
595 | /*############################################################################## | |
596 | // Stop functions called by external Target Fabrics Modules | |
597 | //############################################################################*/ | |
598 | ||
599 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
600 | ||
601 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
602 | static ssize_t target_core_dev_show_attr_##_name( \ | |
603 | struct se_dev_attrib *da, \ | |
604 | char *page) \ | |
605 | { \ | |
606 | struct se_device *dev; \ | |
607 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
608 | ssize_t rb; \ | |
609 | \ | |
610 | spin_lock(&se_dev->se_dev_lock); \ | |
611 | dev = se_dev->se_dev_ptr; \ | |
612 | if (!(dev)) { \ | |
613 | spin_unlock(&se_dev->se_dev_lock); \ | |
614 | return -ENODEV; \ | |
615 | } \ | |
e3d6f909 AG |
616 | rb = snprintf(page, PAGE_SIZE, "%u\n", \ |
617 | (u32)dev->se_sub_dev->se_dev_attrib._name); \ | |
c66ac9db NB |
618 | spin_unlock(&se_dev->se_dev_lock); \ |
619 | \ | |
620 | return rb; \ | |
621 | } | |
622 | ||
623 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
624 | static ssize_t target_core_dev_store_attr_##_name( \ | |
625 | struct se_dev_attrib *da, \ | |
626 | const char *page, \ | |
627 | size_t count) \ | |
628 | { \ | |
629 | struct se_device *dev; \ | |
630 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
631 | unsigned long val; \ | |
632 | int ret; \ | |
633 | \ | |
634 | spin_lock(&se_dev->se_dev_lock); \ | |
635 | dev = se_dev->se_dev_ptr; \ | |
636 | if (!(dev)) { \ | |
637 | spin_unlock(&se_dev->se_dev_lock); \ | |
638 | return -ENODEV; \ | |
639 | } \ | |
640 | ret = strict_strtoul(page, 0, &val); \ | |
641 | if (ret < 0) { \ | |
642 | spin_unlock(&se_dev->se_dev_lock); \ | |
643 | printk(KERN_ERR "strict_strtoul() failed with" \ | |
644 | " ret: %d\n", ret); \ | |
645 | return -EINVAL; \ | |
646 | } \ | |
647 | ret = se_dev_set_##_name(dev, (u32)val); \ | |
648 | spin_unlock(&se_dev->se_dev_lock); \ | |
649 | \ | |
650 | return (!ret) ? count : -EINVAL; \ | |
651 | } | |
652 | ||
653 | #define DEF_DEV_ATTRIB(_name) \ | |
654 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
655 | DEF_DEV_ATTRIB_STORE(_name); | |
656 | ||
657 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
658 | DEF_DEV_ATTRIB_SHOW(_name); | |
659 | ||
660 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
661 | #define SE_DEV_ATTR(_name, _mode) \ | |
662 | static struct target_core_dev_attrib_attribute \ | |
663 | target_core_dev_attrib_##_name = \ | |
664 | __CONFIGFS_EATTR(_name, _mode, \ | |
665 | target_core_dev_show_attr_##_name, \ | |
666 | target_core_dev_store_attr_##_name); | |
667 | ||
668 | #define SE_DEV_ATTR_RO(_name); \ | |
669 | static struct target_core_dev_attrib_attribute \ | |
670 | target_core_dev_attrib_##_name = \ | |
671 | __CONFIGFS_EATTR_RO(_name, \ | |
672 | target_core_dev_show_attr_##_name); | |
673 | ||
674 | DEF_DEV_ATTRIB(emulate_dpo); | |
675 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
676 | ||
677 | DEF_DEV_ATTRIB(emulate_fua_write); | |
678 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
679 | ||
680 | DEF_DEV_ATTRIB(emulate_fua_read); | |
681 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
682 | ||
683 | DEF_DEV_ATTRIB(emulate_write_cache); | |
684 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
685 | ||
686 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
687 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
688 | ||
689 | DEF_DEV_ATTRIB(emulate_tas); | |
690 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
691 | ||
692 | DEF_DEV_ATTRIB(emulate_tpu); | |
693 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
694 | ||
695 | DEF_DEV_ATTRIB(emulate_tpws); | |
696 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
697 | ||
698 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
699 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
700 | ||
701 | DEF_DEV_ATTRIB_RO(hw_block_size); | |
702 | SE_DEV_ATTR_RO(hw_block_size); | |
703 | ||
704 | DEF_DEV_ATTRIB(block_size); | |
705 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
706 | ||
707 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
708 | SE_DEV_ATTR_RO(hw_max_sectors); | |
709 | ||
710 | DEF_DEV_ATTRIB(max_sectors); | |
711 | SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); | |
712 | ||
713 | DEF_DEV_ATTRIB(optimal_sectors); | |
714 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
715 | ||
716 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
717 | SE_DEV_ATTR_RO(hw_queue_depth); | |
718 | ||
719 | DEF_DEV_ATTRIB(queue_depth); | |
720 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
721 | ||
722 | DEF_DEV_ATTRIB(task_timeout); | |
723 | SE_DEV_ATTR(task_timeout, S_IRUGO | S_IWUSR); | |
724 | ||
725 | DEF_DEV_ATTRIB(max_unmap_lba_count); | |
726 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
727 | ||
728 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
729 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
730 | ||
731 | DEF_DEV_ATTRIB(unmap_granularity); | |
732 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
733 | ||
734 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
735 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
736 | ||
737 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
738 | ||
739 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
740 | &target_core_dev_attrib_emulate_dpo.attr, | |
741 | &target_core_dev_attrib_emulate_fua_write.attr, | |
742 | &target_core_dev_attrib_emulate_fua_read.attr, | |
743 | &target_core_dev_attrib_emulate_write_cache.attr, | |
744 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
745 | &target_core_dev_attrib_emulate_tas.attr, | |
746 | &target_core_dev_attrib_emulate_tpu.attr, | |
747 | &target_core_dev_attrib_emulate_tpws.attr, | |
748 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
749 | &target_core_dev_attrib_hw_block_size.attr, | |
750 | &target_core_dev_attrib_block_size.attr, | |
751 | &target_core_dev_attrib_hw_max_sectors.attr, | |
752 | &target_core_dev_attrib_max_sectors.attr, | |
753 | &target_core_dev_attrib_optimal_sectors.attr, | |
754 | &target_core_dev_attrib_hw_queue_depth.attr, | |
755 | &target_core_dev_attrib_queue_depth.attr, | |
756 | &target_core_dev_attrib_task_timeout.attr, | |
757 | &target_core_dev_attrib_max_unmap_lba_count.attr, | |
758 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
759 | &target_core_dev_attrib_unmap_granularity.attr, | |
760 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
761 | NULL, | |
762 | }; | |
763 | ||
764 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
765 | .show_attribute = target_core_dev_attrib_attr_show, | |
766 | .store_attribute = target_core_dev_attrib_attr_store, | |
767 | }; | |
768 | ||
769 | static struct config_item_type target_core_dev_attrib_cit = { | |
770 | .ct_item_ops = &target_core_dev_attrib_ops, | |
771 | .ct_attrs = target_core_dev_attrib_attrs, | |
772 | .ct_owner = THIS_MODULE, | |
773 | }; | |
774 | ||
775 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
776 | ||
777 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
778 | ||
779 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
780 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
781 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
782 | __CONFIGFS_EATTR(_name, _mode, \ | |
783 | target_core_dev_wwn_show_attr_##_name, \ | |
784 | target_core_dev_wwn_store_attr_##_name); | |
785 | ||
786 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
787 | do { \ | |
788 | static struct target_core_dev_wwn_attribute \ | |
789 | target_core_dev_wwn_##_name = \ | |
790 | __CONFIGFS_EATTR_RO(_name, \ | |
791 | target_core_dev_wwn_show_attr_##_name); \ | |
792 | } while (0); | |
793 | ||
794 | /* | |
795 | * VPD page 0x80 Unit serial | |
796 | */ | |
797 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
798 | struct t10_wwn *t10_wwn, | |
799 | char *page) | |
800 | { | |
801 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
802 | struct se_device *dev; | |
803 | ||
804 | dev = se_dev->se_dev_ptr; | |
805 | if (!(dev)) | |
806 | return -ENODEV; | |
807 | ||
808 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", | |
809 | &t10_wwn->unit_serial[0]); | |
810 | } | |
811 | ||
812 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
813 | struct t10_wwn *t10_wwn, | |
814 | const char *page, | |
815 | size_t count) | |
816 | { | |
817 | struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; | |
818 | struct se_device *dev; | |
819 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; | |
820 | ||
821 | /* | |
822 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
823 | * from the struct scsi_device level firmware, do not allow | |
824 | * VPD Unit Serial to be emulated. | |
825 | * | |
826 | * Note this struct scsi_device could also be emulating VPD | |
827 | * information from its drivers/scsi LLD. But for now we assume | |
828 | * it is doing 'the right thing' wrt a world wide unique | |
829 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
830 | */ | |
831 | if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { | |
832 | printk(KERN_ERR "Underlying SCSI device firmware provided VPD" | |
833 | " Unit Serial, ignoring request\n"); | |
834 | return -EOPNOTSUPP; | |
835 | } | |
836 | ||
60d645a4 | 837 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
c66ac9db NB |
838 | printk(KERN_ERR "Emulated VPD Unit Serial exceeds" |
839 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); | |
840 | return -EOVERFLOW; | |
841 | } | |
842 | /* | |
843 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
844 | * do exist, fail here as changing this information on the fly | |
845 | * (underneath the initiator side OS dependent multipath code) | |
846 | * could cause negative effects. | |
847 | */ | |
848 | dev = su_dev->se_dev_ptr; | |
849 | if ((dev)) { | |
850 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
851 | printk(KERN_ERR "Unable to set VPD Unit Serial while" | |
852 | " active %d $FABRIC_MOD exports exist\n", | |
853 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
854 | return -EINVAL; | |
855 | } | |
856 | } | |
857 | /* | |
858 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
859 | * | |
860 | * Also, strip any newline added from the userspace | |
861 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
862 | */ | |
863 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
864 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
865 | snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, | |
866 | "%s", strstrip(buf)); | |
867 | su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; | |
868 | ||
869 | printk(KERN_INFO "Target_Core_ConfigFS: Set emulated VPD Unit Serial:" | |
870 | " %s\n", su_dev->t10_wwn.unit_serial); | |
871 | ||
872 | return count; | |
873 | } | |
874 | ||
875 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
876 | ||
877 | /* | |
878 | * VPD page 0x83 Protocol Identifier | |
879 | */ | |
880 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
881 | struct t10_wwn *t10_wwn, | |
882 | char *page) | |
883 | { | |
884 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
885 | struct se_device *dev; | |
886 | struct t10_vpd *vpd; | |
887 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
888 | ssize_t len = 0; | |
889 | ||
890 | dev = se_dev->se_dev_ptr; | |
891 | if (!(dev)) | |
892 | return -ENODEV; | |
893 | ||
894 | memset(buf, 0, VPD_TMP_BUF_SIZE); | |
895 | ||
896 | spin_lock(&t10_wwn->t10_vpd_lock); | |
897 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
898 | if (!(vpd->protocol_identifier_set)) | |
899 | continue; | |
900 | ||
901 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
902 | ||
60d645a4 | 903 | if ((len + strlen(buf) >= PAGE_SIZE)) |
c66ac9db NB |
904 | break; |
905 | ||
906 | len += sprintf(page+len, "%s", buf); | |
907 | } | |
908 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
909 | ||
910 | return len; | |
911 | } | |
912 | ||
913 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
914 | struct t10_wwn *t10_wwn, | |
915 | const char *page, | |
916 | size_t count) | |
917 | { | |
918 | return -ENOSYS; | |
919 | } | |
920 | ||
921 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
922 | ||
923 | /* | |
924 | * Generic wrapper for dumping VPD identifiers by association. | |
925 | */ | |
926 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
927 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
928 | struct t10_wwn *t10_wwn, \ | |
929 | char *page) \ | |
930 | { \ | |
931 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ | |
932 | struct se_device *dev; \ | |
933 | struct t10_vpd *vpd; \ | |
934 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
935 | ssize_t len = 0; \ | |
936 | \ | |
937 | dev = se_dev->se_dev_ptr; \ | |
938 | if (!(dev)) \ | |
939 | return -ENODEV; \ | |
940 | \ | |
941 | spin_lock(&t10_wwn->t10_vpd_lock); \ | |
942 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
943 | if (vpd->association != _assoc) \ | |
944 | continue; \ | |
945 | \ | |
946 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
947 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
60d645a4 | 948 | if ((len + strlen(buf) >= PAGE_SIZE)) \ |
c66ac9db NB |
949 | break; \ |
950 | len += sprintf(page+len, "%s", buf); \ | |
951 | \ | |
952 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
953 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
60d645a4 | 954 | if ((len + strlen(buf) >= PAGE_SIZE)) \ |
c66ac9db NB |
955 | break; \ |
956 | len += sprintf(page+len, "%s", buf); \ | |
957 | \ | |
958 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
959 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
60d645a4 | 960 | if ((len + strlen(buf) >= PAGE_SIZE)) \ |
c66ac9db NB |
961 | break; \ |
962 | len += sprintf(page+len, "%s", buf); \ | |
963 | } \ | |
964 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
965 | \ | |
966 | return len; \ | |
967 | } | |
968 | ||
969 | /* | |
970 | * VPD page 0x83 Assoication: Logical Unit | |
971 | */ | |
972 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
973 | ||
974 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
975 | struct t10_wwn *t10_wwn, | |
976 | const char *page, | |
977 | size_t count) | |
978 | { | |
979 | return -ENOSYS; | |
980 | } | |
981 | ||
982 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
983 | ||
984 | /* | |
985 | * VPD page 0x83 Association: Target Port | |
986 | */ | |
987 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
988 | ||
989 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
990 | struct t10_wwn *t10_wwn, | |
991 | const char *page, | |
992 | size_t count) | |
993 | { | |
994 | return -ENOSYS; | |
995 | } | |
996 | ||
997 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
998 | ||
999 | /* | |
1000 | * VPD page 0x83 Association: SCSI Target Device | |
1001 | */ | |
1002 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
1003 | ||
1004 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
1005 | struct t10_wwn *t10_wwn, | |
1006 | const char *page, | |
1007 | size_t count) | |
1008 | { | |
1009 | return -ENOSYS; | |
1010 | } | |
1011 | ||
1012 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
1013 | ||
1014 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
1015 | ||
1016 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
1017 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
1018 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
1019 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
1020 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
1021 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1022 | NULL, | |
1023 | }; | |
1024 | ||
1025 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1026 | .show_attribute = target_core_dev_wwn_attr_show, | |
1027 | .store_attribute = target_core_dev_wwn_attr_store, | |
1028 | }; | |
1029 | ||
1030 | static struct config_item_type target_core_dev_wwn_cit = { | |
1031 | .ct_item_ops = &target_core_dev_wwn_ops, | |
1032 | .ct_attrs = target_core_dev_wwn_attrs, | |
1033 | .ct_owner = THIS_MODULE, | |
1034 | }; | |
1035 | ||
1036 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
1037 | ||
1038 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
1039 | ||
1040 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); | |
1041 | #define SE_DEV_PR_ATTR(_name, _mode) \ | |
1042 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1043 | __CONFIGFS_EATTR(_name, _mode, \ | |
1044 | target_core_dev_pr_show_attr_##_name, \ | |
1045 | target_core_dev_pr_store_attr_##_name); | |
1046 | ||
1047 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1048 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1049 | __CONFIGFS_EATTR_RO(_name, \ | |
1050 | target_core_dev_pr_show_attr_##_name); | |
1051 | ||
1052 | /* | |
1053 | * res_holder | |
1054 | */ | |
1055 | static ssize_t target_core_dev_pr_show_spc3_res( | |
1056 | struct se_device *dev, | |
1057 | char *page, | |
1058 | ssize_t *len) | |
1059 | { | |
1060 | struct se_node_acl *se_nacl; | |
1061 | struct t10_pr_registration *pr_reg; | |
1062 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1063 | int prf_isid; | |
1064 | ||
1065 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1066 | ||
1067 | spin_lock(&dev->dev_reservation_lock); | |
1068 | pr_reg = dev->dev_pr_res_holder; | |
1069 | if (!(pr_reg)) { | |
1070 | *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); | |
1071 | spin_unlock(&dev->dev_reservation_lock); | |
1072 | return *len; | |
1073 | } | |
1074 | se_nacl = pr_reg->pr_reg_nacl; | |
1075 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1076 | PR_REG_ISID_ID_LEN); | |
1077 | ||
1078 | *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", | |
e3d6f909 | 1079 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1080 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); |
1081 | spin_unlock(&dev->dev_reservation_lock); | |
1082 | ||
1083 | return *len; | |
1084 | } | |
1085 | ||
1086 | static ssize_t target_core_dev_pr_show_spc2_res( | |
1087 | struct se_device *dev, | |
1088 | char *page, | |
1089 | ssize_t *len) | |
1090 | { | |
1091 | struct se_node_acl *se_nacl; | |
1092 | ||
1093 | spin_lock(&dev->dev_reservation_lock); | |
1094 | se_nacl = dev->dev_reserved_node_acl; | |
1095 | if (!(se_nacl)) { | |
1096 | *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); | |
1097 | spin_unlock(&dev->dev_reservation_lock); | |
1098 | return *len; | |
1099 | } | |
1100 | *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", | |
e3d6f909 | 1101 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1102 | se_nacl->initiatorname); |
1103 | spin_unlock(&dev->dev_reservation_lock); | |
1104 | ||
1105 | return *len; | |
1106 | } | |
1107 | ||
1108 | static ssize_t target_core_dev_pr_show_attr_res_holder( | |
1109 | struct se_subsystem_dev *su_dev, | |
1110 | char *page) | |
1111 | { | |
1112 | ssize_t len = 0; | |
1113 | ||
1114 | if (!(su_dev->se_dev_ptr)) | |
1115 | return -ENODEV; | |
1116 | ||
e3d6f909 | 1117 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1118 | case SPC3_PERSISTENT_RESERVATIONS: |
1119 | target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, | |
1120 | page, &len); | |
1121 | break; | |
1122 | case SPC2_RESERVATIONS: | |
1123 | target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, | |
1124 | page, &len); | |
1125 | break; | |
1126 | case SPC_PASSTHROUGH: | |
1127 | len += sprintf(page+len, "Passthrough\n"); | |
1128 | break; | |
1129 | default: | |
1130 | len += sprintf(page+len, "Unknown\n"); | |
1131 | break; | |
1132 | } | |
1133 | ||
1134 | return len; | |
1135 | } | |
1136 | ||
1137 | SE_DEV_PR_ATTR_RO(res_holder); | |
1138 | ||
1139 | /* | |
1140 | * res_pr_all_tgt_pts | |
1141 | */ | |
1142 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( | |
1143 | struct se_subsystem_dev *su_dev, | |
1144 | char *page) | |
1145 | { | |
1146 | struct se_device *dev; | |
1147 | struct t10_pr_registration *pr_reg; | |
1148 | ssize_t len = 0; | |
1149 | ||
1150 | dev = su_dev->se_dev_ptr; | |
1151 | if (!(dev)) | |
1152 | return -ENODEV; | |
1153 | ||
e3d6f909 | 1154 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1155 | return len; |
1156 | ||
1157 | spin_lock(&dev->dev_reservation_lock); | |
1158 | pr_reg = dev->dev_pr_res_holder; | |
1159 | if (!(pr_reg)) { | |
1160 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1161 | spin_unlock(&dev->dev_reservation_lock); | |
1162 | return len; | |
1163 | } | |
1164 | /* | |
1165 | * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 | |
1166 | * Basic PERSISTENT RESERVER OUT parameter list, page 290 | |
1167 | */ | |
1168 | if (pr_reg->pr_reg_all_tg_pt) | |
1169 | len = sprintf(page, "SPC-3 Reservation: All Target" | |
1170 | " Ports registration\n"); | |
1171 | else | |
1172 | len = sprintf(page, "SPC-3 Reservation: Single" | |
1173 | " Target Port registration\n"); | |
1174 | spin_unlock(&dev->dev_reservation_lock); | |
1175 | ||
1176 | return len; | |
1177 | } | |
1178 | ||
1179 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1180 | ||
1181 | /* | |
1182 | * res_pr_generation | |
1183 | */ | |
1184 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( | |
1185 | struct se_subsystem_dev *su_dev, | |
1186 | char *page) | |
1187 | { | |
1188 | if (!(su_dev->se_dev_ptr)) | |
1189 | return -ENODEV; | |
1190 | ||
e3d6f909 | 1191 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1192 | return 0; |
1193 | ||
e3d6f909 | 1194 | return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation); |
c66ac9db NB |
1195 | } |
1196 | ||
1197 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1198 | ||
1199 | /* | |
1200 | * res_pr_holder_tg_port | |
1201 | */ | |
1202 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
1203 | struct se_subsystem_dev *su_dev, | |
1204 | char *page) | |
1205 | { | |
1206 | struct se_device *dev; | |
1207 | struct se_node_acl *se_nacl; | |
1208 | struct se_lun *lun; | |
1209 | struct se_portal_group *se_tpg; | |
1210 | struct t10_pr_registration *pr_reg; | |
1211 | struct target_core_fabric_ops *tfo; | |
1212 | ssize_t len = 0; | |
1213 | ||
1214 | dev = su_dev->se_dev_ptr; | |
1215 | if (!(dev)) | |
1216 | return -ENODEV; | |
1217 | ||
e3d6f909 | 1218 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1219 | return len; |
1220 | ||
1221 | spin_lock(&dev->dev_reservation_lock); | |
1222 | pr_reg = dev->dev_pr_res_holder; | |
1223 | if (!(pr_reg)) { | |
1224 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1225 | spin_unlock(&dev->dev_reservation_lock); | |
1226 | return len; | |
1227 | } | |
1228 | se_nacl = pr_reg->pr_reg_nacl; | |
1229 | se_tpg = se_nacl->se_tpg; | |
1230 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1231 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1232 | |
1233 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1234 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1235 | tfo->tpg_get_wwn(se_tpg)); | |
1236 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
1237 | " Identifer Tag: %hu %s Portal Group Tag: %hu" | |
1238 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, | |
1239 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1240 | tfo->get_fabric_name(), lun->unpacked_lun); | |
1241 | spin_unlock(&dev->dev_reservation_lock); | |
1242 | ||
1243 | return len; | |
1244 | } | |
1245 | ||
1246 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1247 | ||
1248 | /* | |
1249 | * res_pr_registered_i_pts | |
1250 | */ | |
1251 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( | |
1252 | struct se_subsystem_dev *su_dev, | |
1253 | char *page) | |
1254 | { | |
1255 | struct target_core_fabric_ops *tfo; | |
1256 | struct t10_pr_registration *pr_reg; | |
1257 | unsigned char buf[384]; | |
1258 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1259 | ssize_t len = 0; | |
1260 | int reg_count = 0, prf_isid; | |
1261 | ||
1262 | if (!(su_dev->se_dev_ptr)) | |
1263 | return -ENODEV; | |
1264 | ||
e3d6f909 | 1265 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1266 | return len; |
1267 | ||
1268 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); | |
1269 | ||
e3d6f909 AG |
1270 | spin_lock(&su_dev->t10_pr.registration_lock); |
1271 | list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, | |
c66ac9db NB |
1272 | pr_reg_list) { |
1273 | ||
1274 | memset(buf, 0, 384); | |
1275 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1276 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1277 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1278 | PR_REG_ISID_ID_LEN); | |
1279 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1280 | tfo->get_fabric_name(), | |
1281 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1282 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1283 | pr_reg->pr_res_generation); | |
1284 | ||
60d645a4 | 1285 | if ((len + strlen(buf) >= PAGE_SIZE)) |
c66ac9db NB |
1286 | break; |
1287 | ||
1288 | len += sprintf(page+len, "%s", buf); | |
1289 | reg_count++; | |
1290 | } | |
e3d6f909 | 1291 | spin_unlock(&su_dev->t10_pr.registration_lock); |
c66ac9db NB |
1292 | |
1293 | if (!(reg_count)) | |
1294 | len += sprintf(page+len, "None\n"); | |
1295 | ||
1296 | return len; | |
1297 | } | |
1298 | ||
1299 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1300 | ||
1301 | /* | |
1302 | * res_pr_type | |
1303 | */ | |
1304 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( | |
1305 | struct se_subsystem_dev *su_dev, | |
1306 | char *page) | |
1307 | { | |
1308 | struct se_device *dev; | |
1309 | struct t10_pr_registration *pr_reg; | |
1310 | ssize_t len = 0; | |
1311 | ||
1312 | dev = su_dev->se_dev_ptr; | |
1313 | if (!(dev)) | |
1314 | return -ENODEV; | |
1315 | ||
e3d6f909 | 1316 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1317 | return len; |
1318 | ||
1319 | spin_lock(&dev->dev_reservation_lock); | |
1320 | pr_reg = dev->dev_pr_res_holder; | |
1321 | if (!(pr_reg)) { | |
1322 | len = sprintf(page, "No SPC-3 Reservation holder\n"); | |
1323 | spin_unlock(&dev->dev_reservation_lock); | |
1324 | return len; | |
1325 | } | |
1326 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1327 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1328 | spin_unlock(&dev->dev_reservation_lock); | |
1329 | ||
1330 | return len; | |
1331 | } | |
1332 | ||
1333 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1334 | ||
1335 | /* | |
1336 | * res_type | |
1337 | */ | |
1338 | static ssize_t target_core_dev_pr_show_attr_res_type( | |
1339 | struct se_subsystem_dev *su_dev, | |
1340 | char *page) | |
1341 | { | |
1342 | ssize_t len = 0; | |
1343 | ||
1344 | if (!(su_dev->se_dev_ptr)) | |
1345 | return -ENODEV; | |
1346 | ||
e3d6f909 | 1347 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1348 | case SPC3_PERSISTENT_RESERVATIONS: |
1349 | len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
1350 | break; | |
1351 | case SPC2_RESERVATIONS: | |
1352 | len = sprintf(page, "SPC2_RESERVATIONS\n"); | |
1353 | break; | |
1354 | case SPC_PASSTHROUGH: | |
1355 | len = sprintf(page, "SPC_PASSTHROUGH\n"); | |
1356 | break; | |
1357 | default: | |
1358 | len = sprintf(page, "UNKNOWN\n"); | |
1359 | break; | |
1360 | } | |
1361 | ||
1362 | return len; | |
1363 | } | |
1364 | ||
1365 | SE_DEV_PR_ATTR_RO(res_type); | |
1366 | ||
1367 | /* | |
1368 | * res_aptpl_active | |
1369 | */ | |
1370 | ||
1371 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( | |
1372 | struct se_subsystem_dev *su_dev, | |
1373 | char *page) | |
1374 | { | |
1375 | if (!(su_dev->se_dev_ptr)) | |
1376 | return -ENODEV; | |
1377 | ||
e3d6f909 | 1378 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1379 | return 0; |
1380 | ||
1381 | return sprintf(page, "APTPL Bit Status: %s\n", | |
e3d6f909 | 1382 | (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1383 | } |
1384 | ||
1385 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1386 | ||
1387 | /* | |
1388 | * res_aptpl_metadata | |
1389 | */ | |
1390 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
1391 | struct se_subsystem_dev *su_dev, | |
1392 | char *page) | |
1393 | { | |
1394 | if (!(su_dev->se_dev_ptr)) | |
1395 | return -ENODEV; | |
1396 | ||
e3d6f909 | 1397 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1398 | return 0; |
1399 | ||
1400 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1401 | } | |
1402 | ||
1403 | enum { | |
1404 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1405 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1406 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1407 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1408 | }; | |
1409 | ||
1410 | static match_table_t tokens = { | |
1411 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1412 | {Opt_initiator_node, "initiator_node=%s"}, | |
1413 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1414 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1415 | {Opt_res_holder, "res_holder=%d"}, | |
1416 | {Opt_res_type, "res_type=%d"}, | |
1417 | {Opt_res_scope, "res_scope=%d"}, | |
1418 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1419 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1420 | {Opt_target_fabric, "target_fabric=%s"}, | |
1421 | {Opt_target_node, "target_node=%s"}, | |
1422 | {Opt_tpgt, "tpgt=%d"}, | |
1423 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1424 | {Opt_target_lun, "target_lun=%d"}, | |
1425 | {Opt_err, NULL} | |
1426 | }; | |
1427 | ||
1428 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
1429 | struct se_subsystem_dev *su_dev, | |
1430 | const char *page, | |
1431 | size_t count) | |
1432 | { | |
1433 | struct se_device *dev; | |
6d180253 JJ |
1434 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1435 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1436 | char *orig, *ptr, *arg_p, *opts; |
1437 | substring_t args[MAX_OPT_ARGS]; | |
1438 | unsigned long long tmp_ll; | |
1439 | u64 sa_res_key = 0; | |
1440 | u32 mapped_lun = 0, target_lun = 0; | |
1441 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1442 | u16 port_rpti = 0, tpgt = 0; | |
1443 | u8 type = 0, scope; | |
1444 | ||
1445 | dev = su_dev->se_dev_ptr; | |
1446 | if (!(dev)) | |
1447 | return -ENODEV; | |
1448 | ||
e3d6f909 | 1449 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1450 | return 0; |
1451 | ||
1452 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
1453 | printk(KERN_INFO "Unable to process APTPL metadata while" | |
1454 | " active fabric exports exist\n"); | |
1455 | return -EINVAL; | |
1456 | } | |
1457 | ||
1458 | opts = kstrdup(page, GFP_KERNEL); | |
1459 | if (!opts) | |
1460 | return -ENOMEM; | |
1461 | ||
1462 | orig = opts; | |
1463 | while ((ptr = strsep(&opts, ",")) != NULL) { | |
1464 | if (!*ptr) | |
1465 | continue; | |
1466 | ||
1467 | token = match_token(ptr, tokens, args); | |
1468 | switch (token) { | |
1469 | case Opt_initiator_fabric: | |
1470 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1471 | if (!i_fabric) { |
1472 | ret = -ENOMEM; | |
1473 | goto out; | |
1474 | } | |
c66ac9db NB |
1475 | break; |
1476 | case Opt_initiator_node: | |
1477 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1478 | if (!i_port) { |
1479 | ret = -ENOMEM; | |
1480 | goto out; | |
1481 | } | |
60d645a4 | 1482 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
c66ac9db NB |
1483 | printk(KERN_ERR "APTPL metadata initiator_node=" |
1484 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", | |
1485 | PR_APTPL_MAX_IPORT_LEN); | |
1486 | ret = -EINVAL; | |
1487 | break; | |
1488 | } | |
1489 | break; | |
1490 | case Opt_initiator_sid: | |
1491 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1492 | if (!isid) { |
1493 | ret = -ENOMEM; | |
1494 | goto out; | |
1495 | } | |
60d645a4 | 1496 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
c66ac9db NB |
1497 | printk(KERN_ERR "APTPL metadata initiator_isid" |
1498 | "= exceeds PR_REG_ISID_LEN: %d\n", | |
1499 | PR_REG_ISID_LEN); | |
1500 | ret = -EINVAL; | |
1501 | break; | |
1502 | } | |
1503 | break; | |
1504 | case Opt_sa_res_key: | |
1505 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1506 | if (!arg_p) { |
1507 | ret = -ENOMEM; | |
1508 | goto out; | |
1509 | } | |
c66ac9db NB |
1510 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
1511 | if (ret < 0) { | |
1512 | printk(KERN_ERR "strict_strtoull() failed for" | |
1513 | " sa_res_key=\n"); | |
1514 | goto out; | |
1515 | } | |
1516 | sa_res_key = (u64)tmp_ll; | |
1517 | break; | |
1518 | /* | |
1519 | * PR APTPL Metadata for Reservation | |
1520 | */ | |
1521 | case Opt_res_holder: | |
1522 | match_int(args, &arg); | |
1523 | res_holder = arg; | |
1524 | break; | |
1525 | case Opt_res_type: | |
1526 | match_int(args, &arg); | |
1527 | type = (u8)arg; | |
1528 | break; | |
1529 | case Opt_res_scope: | |
1530 | match_int(args, &arg); | |
1531 | scope = (u8)arg; | |
1532 | break; | |
1533 | case Opt_res_all_tg_pt: | |
1534 | match_int(args, &arg); | |
1535 | all_tg_pt = (int)arg; | |
1536 | break; | |
1537 | case Opt_mapped_lun: | |
1538 | match_int(args, &arg); | |
1539 | mapped_lun = (u32)arg; | |
1540 | break; | |
1541 | /* | |
1542 | * PR APTPL Metadata for Target Port | |
1543 | */ | |
1544 | case Opt_target_fabric: | |
1545 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1546 | if (!t_fabric) { |
1547 | ret = -ENOMEM; | |
1548 | goto out; | |
1549 | } | |
c66ac9db NB |
1550 | break; |
1551 | case Opt_target_node: | |
1552 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1553 | if (!t_port) { |
1554 | ret = -ENOMEM; | |
1555 | goto out; | |
1556 | } | |
60d645a4 | 1557 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
c66ac9db NB |
1558 | printk(KERN_ERR "APTPL metadata target_node=" |
1559 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", | |
1560 | PR_APTPL_MAX_TPORT_LEN); | |
1561 | ret = -EINVAL; | |
1562 | break; | |
1563 | } | |
1564 | break; | |
1565 | case Opt_tpgt: | |
1566 | match_int(args, &arg); | |
1567 | tpgt = (u16)arg; | |
1568 | break; | |
1569 | case Opt_port_rtpi: | |
1570 | match_int(args, &arg); | |
1571 | port_rpti = (u16)arg; | |
1572 | break; | |
1573 | case Opt_target_lun: | |
1574 | match_int(args, &arg); | |
1575 | target_lun = (u32)arg; | |
1576 | break; | |
1577 | default: | |
1578 | break; | |
1579 | } | |
1580 | } | |
1581 | ||
1582 | if (!(i_port) || !(t_port) || !(sa_res_key)) { | |
1583 | printk(KERN_ERR "Illegal parameters for APTPL registration\n"); | |
1584 | ret = -EINVAL; | |
1585 | goto out; | |
1586 | } | |
1587 | ||
1588 | if (res_holder && !(type)) { | |
1589 | printk(KERN_ERR "Illegal PR type: 0x%02x for reservation" | |
1590 | " holder\n", type); | |
1591 | ret = -EINVAL; | |
1592 | goto out; | |
1593 | } | |
1594 | ||
e3d6f909 | 1595 | ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key, |
c66ac9db NB |
1596 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1597 | res_holder, all_tg_pt, type); | |
1598 | out: | |
6d180253 JJ |
1599 | kfree(i_fabric); |
1600 | kfree(i_port); | |
1601 | kfree(isid); | |
1602 | kfree(t_fabric); | |
1603 | kfree(t_port); | |
c66ac9db NB |
1604 | kfree(orig); |
1605 | return (ret == 0) ? count : ret; | |
1606 | } | |
1607 | ||
1608 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1609 | ||
1610 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); | |
1611 | ||
1612 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1613 | &target_core_dev_pr_res_holder.attr, | |
1614 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1615 | &target_core_dev_pr_res_pr_generation.attr, | |
1616 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1617 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1618 | &target_core_dev_pr_res_pr_type.attr, | |
1619 | &target_core_dev_pr_res_type.attr, | |
1620 | &target_core_dev_pr_res_aptpl_active.attr, | |
1621 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1622 | NULL, | |
1623 | }; | |
1624 | ||
1625 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1626 | .show_attribute = target_core_dev_pr_attr_show, | |
1627 | .store_attribute = target_core_dev_pr_attr_store, | |
1628 | }; | |
1629 | ||
1630 | static struct config_item_type target_core_dev_pr_cit = { | |
1631 | .ct_item_ops = &target_core_dev_pr_ops, | |
1632 | .ct_attrs = target_core_dev_pr_attrs, | |
1633 | .ct_owner = THIS_MODULE, | |
1634 | }; | |
1635 | ||
1636 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1637 | ||
1638 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1639 | ||
1640 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1641 | { | |
1642 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1643 | struct se_hba *hba = se_dev->se_dev_hba; | |
1644 | struct se_subsystem_api *t = hba->transport; | |
1645 | int bl = 0; | |
1646 | ssize_t read_bytes = 0; | |
1647 | ||
1648 | if (!(se_dev->se_dev_ptr)) | |
1649 | return -ENODEV; | |
1650 | ||
1651 | transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); | |
1652 | read_bytes += bl; | |
1653 | read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); | |
1654 | return read_bytes; | |
1655 | } | |
1656 | ||
1657 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1658 | .attr = { .ca_owner = THIS_MODULE, | |
1659 | .ca_name = "info", | |
1660 | .ca_mode = S_IRUGO }, | |
1661 | .show = target_core_show_dev_info, | |
1662 | .store = NULL, | |
1663 | }; | |
1664 | ||
1665 | static ssize_t target_core_store_dev_control( | |
1666 | void *p, | |
1667 | const char *page, | |
1668 | size_t count) | |
1669 | { | |
1670 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1671 | struct se_hba *hba = se_dev->se_dev_hba; | |
1672 | struct se_subsystem_api *t = hba->transport; | |
1673 | ||
1674 | if (!(se_dev->se_dev_su_ptr)) { | |
1675 | printk(KERN_ERR "Unable to locate struct se_subsystem_dev>se" | |
1676 | "_dev_su_ptr\n"); | |
1677 | return -EINVAL; | |
1678 | } | |
1679 | ||
1680 | return t->set_configfs_dev_params(hba, se_dev, page, count); | |
1681 | } | |
1682 | ||
1683 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1684 | .attr = { .ca_owner = THIS_MODULE, | |
1685 | .ca_name = "control", | |
1686 | .ca_mode = S_IWUSR }, | |
1687 | .show = NULL, | |
1688 | .store = target_core_store_dev_control, | |
1689 | }; | |
1690 | ||
1691 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1692 | { | |
1693 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1694 | ||
1695 | if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) | |
1696 | return 0; | |
1697 | ||
1698 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); | |
1699 | } | |
1700 | ||
1701 | static ssize_t target_core_store_dev_alias( | |
1702 | void *p, | |
1703 | const char *page, | |
1704 | size_t count) | |
1705 | { | |
1706 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1707 | struct se_hba *hba = se_dev->se_dev_hba; | |
1708 | ssize_t read_bytes; | |
1709 | ||
1710 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
1711 | printk(KERN_ERR "alias count: %d exceeds" | |
1712 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, | |
1713 | SE_DEV_ALIAS_LEN-1); | |
1714 | return -EINVAL; | |
1715 | } | |
1716 | ||
1717 | se_dev->su_dev_flags |= SDF_USING_ALIAS; | |
1718 | read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, | |
1719 | "%s", page); | |
1720 | ||
1721 | printk(KERN_INFO "Target_Core_ConfigFS: %s/%s set alias: %s\n", | |
1722 | config_item_name(&hba->hba_group.cg_item), | |
1723 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1724 | se_dev->se_dev_alias); | |
1725 | ||
1726 | return read_bytes; | |
1727 | } | |
1728 | ||
1729 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1730 | .attr = { .ca_owner = THIS_MODULE, | |
1731 | .ca_name = "alias", | |
1732 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1733 | .show = target_core_show_dev_alias, | |
1734 | .store = target_core_store_dev_alias, | |
1735 | }; | |
1736 | ||
1737 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1738 | { | |
1739 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1740 | ||
1741 | if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) | |
1742 | return 0; | |
1743 | ||
1744 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); | |
1745 | } | |
1746 | ||
1747 | static ssize_t target_core_store_dev_udev_path( | |
1748 | void *p, | |
1749 | const char *page, | |
1750 | size_t count) | |
1751 | { | |
1752 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1753 | struct se_hba *hba = se_dev->se_dev_hba; | |
1754 | ssize_t read_bytes; | |
1755 | ||
1756 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
1757 | printk(KERN_ERR "udev_path count: %d exceeds" | |
1758 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, | |
1759 | SE_UDEV_PATH_LEN-1); | |
1760 | return -EINVAL; | |
1761 | } | |
1762 | ||
1763 | se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; | |
1764 | read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, | |
1765 | "%s", page); | |
1766 | ||
1767 | printk(KERN_INFO "Target_Core_ConfigFS: %s/%s set udev_path: %s\n", | |
1768 | config_item_name(&hba->hba_group.cg_item), | |
1769 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1770 | se_dev->se_dev_udev_path); | |
1771 | ||
1772 | return read_bytes; | |
1773 | } | |
1774 | ||
1775 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1776 | .attr = { .ca_owner = THIS_MODULE, | |
1777 | .ca_name = "udev_path", | |
1778 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1779 | .show = target_core_show_dev_udev_path, | |
1780 | .store = target_core_store_dev_udev_path, | |
1781 | }; | |
1782 | ||
1783 | static ssize_t target_core_store_dev_enable( | |
1784 | void *p, | |
1785 | const char *page, | |
1786 | size_t count) | |
1787 | { | |
1788 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1789 | struct se_device *dev; | |
1790 | struct se_hba *hba = se_dev->se_dev_hba; | |
1791 | struct se_subsystem_api *t = hba->transport; | |
1792 | char *ptr; | |
1793 | ||
1794 | ptr = strstr(page, "1"); | |
1795 | if (!(ptr)) { | |
1796 | printk(KERN_ERR "For dev_enable ops, only valid value" | |
1797 | " is \"1\"\n"); | |
1798 | return -EINVAL; | |
1799 | } | |
1800 | if ((se_dev->se_dev_ptr)) { | |
1801 | printk(KERN_ERR "se_dev->se_dev_ptr already set for storage" | |
1802 | " object\n"); | |
1803 | return -EEXIST; | |
1804 | } | |
1805 | ||
1806 | if (t->check_configfs_dev_params(hba, se_dev) < 0) | |
1807 | return -EINVAL; | |
1808 | ||
1809 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
613640e4 NB |
1810 | if (IS_ERR(dev)) |
1811 | return PTR_ERR(dev); | |
1812 | else if (!dev) | |
c66ac9db NB |
1813 | return -EINVAL; |
1814 | ||
1815 | se_dev->se_dev_ptr = dev; | |
1816 | printk(KERN_INFO "Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" | |
1817 | " %p\n", se_dev->se_dev_ptr); | |
1818 | ||
1819 | return count; | |
1820 | } | |
1821 | ||
1822 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1823 | .attr = { .ca_owner = THIS_MODULE, | |
1824 | .ca_name = "enable", | |
1825 | .ca_mode = S_IWUSR }, | |
1826 | .show = NULL, | |
1827 | .store = target_core_store_dev_enable, | |
1828 | }; | |
1829 | ||
1830 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1831 | { | |
1832 | struct se_device *dev; | |
1833 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1834 | struct config_item *lu_ci; | |
1835 | struct t10_alua_lu_gp *lu_gp; | |
1836 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1837 | ssize_t len = 0; | |
1838 | ||
1839 | dev = su_dev->se_dev_ptr; | |
1840 | if (!(dev)) | |
1841 | return -ENODEV; | |
1842 | ||
e3d6f909 | 1843 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) |
c66ac9db NB |
1844 | return len; |
1845 | ||
1846 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
1847 | if (!(lu_gp_mem)) { | |
1848 | printk(KERN_ERR "NULL struct se_device->dev_alua_lu_gp_mem" | |
1849 | " pointer\n"); | |
1850 | return -EINVAL; | |
1851 | } | |
1852 | ||
1853 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1854 | lu_gp = lu_gp_mem->lu_gp; | |
1855 | if ((lu_gp)) { | |
1856 | lu_ci = &lu_gp->lu_gp_group.cg_item; | |
1857 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1858 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1859 | } | |
1860 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1861 | ||
1862 | return len; | |
1863 | } | |
1864 | ||
1865 | static ssize_t target_core_store_alua_lu_gp( | |
1866 | void *p, | |
1867 | const char *page, | |
1868 | size_t count) | |
1869 | { | |
1870 | struct se_device *dev; | |
1871 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1872 | struct se_hba *hba = su_dev->se_dev_hba; | |
1873 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; | |
1874 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1875 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1876 | int move = 0; | |
1877 | ||
1878 | dev = su_dev->se_dev_ptr; | |
1879 | if (!(dev)) | |
1880 | return -ENODEV; | |
1881 | ||
e3d6f909 | 1882 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { |
c66ac9db NB |
1883 | printk(KERN_WARNING "SPC3_ALUA_EMULATED not enabled for %s/%s\n", |
1884 | config_item_name(&hba->hba_group.cg_item), | |
1885 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
1886 | return -EINVAL; | |
1887 | } | |
1888 | if (count > LU_GROUP_NAME_BUF) { | |
1889 | printk(KERN_ERR "ALUA LU Group Alias too large!\n"); | |
1890 | return -EINVAL; | |
1891 | } | |
1892 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1893 | memcpy(buf, page, count); | |
1894 | /* | |
1895 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1896 | * making a new group association. | |
1897 | */ | |
1898 | if (strcmp(strstrip(buf), "NULL")) { | |
1899 | /* | |
1900 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1901 | * struct t10_alua_lu_gp. This reference is released with | |
1902 | * core_alua_get_lu_gp_by_name below(). | |
1903 | */ | |
1904 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
1905 | if (!(lu_gp_new)) | |
1906 | return -ENODEV; | |
1907 | } | |
1908 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
1909 | if (!(lu_gp_mem)) { | |
1910 | if (lu_gp_new) | |
1911 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1912 | printk(KERN_ERR "NULL struct se_device->dev_alua_lu_gp_mem" | |
1913 | " pointer\n"); | |
1914 | return -EINVAL; | |
1915 | } | |
1916 | ||
1917 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1918 | lu_gp = lu_gp_mem->lu_gp; | |
1919 | if ((lu_gp)) { | |
1920 | /* | |
1921 | * Clearing an existing lu_gp association, and replacing | |
1922 | * with NULL | |
1923 | */ | |
1924 | if (!(lu_gp_new)) { | |
1925 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing %s/%s" | |
1926 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" | |
1927 | " %hu\n", | |
1928 | config_item_name(&hba->hba_group.cg_item), | |
1929 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1930 | config_item_name(&lu_gp->lu_gp_group.cg_item), | |
1931 | lu_gp->lu_gp_id); | |
1932 | ||
1933 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1934 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1935 | ||
1936 | return count; | |
1937 | } | |
1938 | /* | |
1939 | * Removing existing association of lu_gp_mem with lu_gp | |
1940 | */ | |
1941 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1942 | move = 1; | |
1943 | } | |
1944 | /* | |
1945 | * Associate lu_gp_mem with lu_gp_new. | |
1946 | */ | |
1947 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1948 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1949 | ||
1950 | printk(KERN_INFO "Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" | |
1951 | " core/alua/lu_gps/%s, ID: %hu\n", | |
1952 | (move) ? "Moving" : "Adding", | |
1953 | config_item_name(&hba->hba_group.cg_item), | |
1954 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1955 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), | |
1956 | lu_gp_new->lu_gp_id); | |
1957 | ||
1958 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1959 | return count; | |
1960 | } | |
1961 | ||
1962 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1963 | .attr = { .ca_owner = THIS_MODULE, | |
1964 | .ca_name = "alua_lu_gp", | |
1965 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1966 | .show = target_core_show_alua_lu_gp, | |
1967 | .store = target_core_store_alua_lu_gp, | |
1968 | }; | |
1969 | ||
1970 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1971 | &target_core_attr_dev_info.attr, | |
1972 | &target_core_attr_dev_control.attr, | |
1973 | &target_core_attr_dev_alias.attr, | |
1974 | &target_core_attr_dev_udev_path.attr, | |
1975 | &target_core_attr_dev_enable.attr, | |
1976 | &target_core_attr_dev_alua_lu_gp.attr, | |
1977 | NULL, | |
1978 | }; | |
1979 | ||
1980 | static void target_core_dev_release(struct config_item *item) | |
1981 | { | |
1982 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
1983 | struct se_subsystem_dev, se_dev_group); | |
1f6fe7cb NB |
1984 | struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); |
1985 | struct se_subsystem_api *t = hba->transport; | |
1986 | struct config_group *dev_cg = &se_dev->se_dev_group; | |
c66ac9db | 1987 | |
c66ac9db | 1988 | kfree(dev_cg->default_groups); |
1f6fe7cb NB |
1989 | /* |
1990 | * This pointer will set when the storage is enabled with: | |
1991 | *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` | |
1992 | */ | |
1993 | if (se_dev->se_dev_ptr) { | |
1994 | printk(KERN_INFO "Target_Core_ConfigFS: Calling se_free_" | |
1995 | "virtual_device() for se_dev_ptr: %p\n", | |
1996 | se_dev->se_dev_ptr); | |
1997 | ||
1998 | se_free_virtual_device(se_dev->se_dev_ptr, hba); | |
1999 | } else { | |
2000 | /* | |
2001 | * Release struct se_subsystem_dev->se_dev_su_ptr.. | |
2002 | */ | |
2003 | printk(KERN_INFO "Target_Core_ConfigFS: Calling t->free_" | |
2004 | "device() for se_dev_su_ptr: %p\n", | |
2005 | se_dev->se_dev_su_ptr); | |
2006 | ||
2007 | t->free_device(se_dev->se_dev_su_ptr); | |
2008 | } | |
2009 | ||
2010 | printk(KERN_INFO "Target_Core_ConfigFS: Deallocating se_subsystem" | |
2011 | "_dev_t: %p\n", se_dev); | |
2012 | kfree(se_dev); | |
c66ac9db NB |
2013 | } |
2014 | ||
2015 | static ssize_t target_core_dev_show(struct config_item *item, | |
2016 | struct configfs_attribute *attr, | |
2017 | char *page) | |
2018 | { | |
2019 | struct se_subsystem_dev *se_dev = container_of( | |
2020 | to_config_group(item), struct se_subsystem_dev, | |
2021 | se_dev_group); | |
2022 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2023 | attr, struct target_core_configfs_attribute, attr); | |
2024 | ||
2025 | if (!(tc_attr->show)) | |
2026 | return -EINVAL; | |
2027 | ||
5951146d | 2028 | return tc_attr->show(se_dev, page); |
c66ac9db NB |
2029 | } |
2030 | ||
2031 | static ssize_t target_core_dev_store(struct config_item *item, | |
2032 | struct configfs_attribute *attr, | |
2033 | const char *page, size_t count) | |
2034 | { | |
2035 | struct se_subsystem_dev *se_dev = container_of( | |
2036 | to_config_group(item), struct se_subsystem_dev, | |
2037 | se_dev_group); | |
2038 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2039 | attr, struct target_core_configfs_attribute, attr); | |
2040 | ||
2041 | if (!(tc_attr->store)) | |
2042 | return -EINVAL; | |
2043 | ||
5951146d | 2044 | return tc_attr->store(se_dev, page, count); |
c66ac9db NB |
2045 | } |
2046 | ||
2047 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2048 | .release = target_core_dev_release, | |
2049 | .show_attribute = target_core_dev_show, | |
2050 | .store_attribute = target_core_dev_store, | |
2051 | }; | |
2052 | ||
2053 | static struct config_item_type target_core_dev_cit = { | |
2054 | .ct_item_ops = &target_core_dev_item_ops, | |
2055 | .ct_attrs = lio_core_dev_attrs, | |
2056 | .ct_owner = THIS_MODULE, | |
2057 | }; | |
2058 | ||
2059 | /* End functions for struct config_item_type target_core_dev_cit */ | |
2060 | ||
2061 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2062 | ||
2063 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2064 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2065 | static struct target_core_alua_lu_gp_attribute \ | |
2066 | target_core_alua_lu_gp_##_name = \ | |
2067 | __CONFIGFS_EATTR(_name, _mode, \ | |
2068 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2069 | target_core_alua_lu_gp_store_attr_##_name); | |
2070 | ||
2071 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2072 | static struct target_core_alua_lu_gp_attribute \ | |
2073 | target_core_alua_lu_gp_##_name = \ | |
2074 | __CONFIGFS_EATTR_RO(_name, \ | |
2075 | target_core_alua_lu_gp_show_attr_##_name); | |
2076 | ||
2077 | /* | |
2078 | * lu_gp_id | |
2079 | */ | |
2080 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2081 | struct t10_alua_lu_gp *lu_gp, | |
2082 | char *page) | |
2083 | { | |
2084 | if (!(lu_gp->lu_gp_valid_id)) | |
2085 | return 0; | |
2086 | ||
2087 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2088 | } | |
2089 | ||
2090 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2091 | struct t10_alua_lu_gp *lu_gp, | |
2092 | const char *page, | |
2093 | size_t count) | |
2094 | { | |
2095 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2096 | unsigned long lu_gp_id; | |
2097 | int ret; | |
2098 | ||
2099 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
2100 | if (ret < 0) { | |
2101 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
2102 | " lu_gp_id\n", ret); | |
2103 | return -EINVAL; | |
2104 | } | |
2105 | if (lu_gp_id > 0x0000ffff) { | |
2106 | printk(KERN_ERR "ALUA lu_gp_id: %lu exceeds maximum:" | |
2107 | " 0x0000ffff\n", lu_gp_id); | |
2108 | return -EINVAL; | |
2109 | } | |
2110 | ||
2111 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2112 | if (ret < 0) | |
2113 | return -EINVAL; | |
2114 | ||
2115 | printk(KERN_INFO "Target_Core_ConfigFS: Set ALUA Logical Unit" | |
2116 | " Group: core/alua/lu_gps/%s to ID: %hu\n", | |
2117 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2118 | lu_gp->lu_gp_id); | |
2119 | ||
2120 | return count; | |
2121 | } | |
2122 | ||
2123 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2124 | ||
2125 | /* | |
2126 | * members | |
2127 | */ | |
2128 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2129 | struct t10_alua_lu_gp *lu_gp, | |
2130 | char *page) | |
2131 | { | |
2132 | struct se_device *dev; | |
2133 | struct se_hba *hba; | |
2134 | struct se_subsystem_dev *su_dev; | |
2135 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2136 | ssize_t len = 0, cur_len; | |
2137 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2138 | ||
2139 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2140 | ||
2141 | spin_lock(&lu_gp->lu_gp_lock); | |
2142 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2143 | dev = lu_gp_mem->lu_gp_mem_dev; | |
2144 | su_dev = dev->se_sub_dev; | |
2145 | hba = su_dev->se_dev_hba; | |
2146 | ||
2147 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2148 | config_item_name(&hba->hba_group.cg_item), | |
2149 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
2150 | cur_len++; /* Extra byte for NULL terminator */ | |
2151 | ||
2152 | if ((cur_len + len) > PAGE_SIZE) { | |
2153 | printk(KERN_WARNING "Ran out of lu_gp_show_attr" | |
2154 | "_members buffer\n"); | |
2155 | break; | |
2156 | } | |
2157 | memcpy(page+len, buf, cur_len); | |
2158 | len += cur_len; | |
2159 | } | |
2160 | spin_unlock(&lu_gp->lu_gp_lock); | |
2161 | ||
2162 | return len; | |
2163 | } | |
2164 | ||
2165 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2166 | ||
2167 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2168 | ||
2169 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2170 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2171 | &target_core_alua_lu_gp_members.attr, | |
2172 | NULL, | |
2173 | }; | |
2174 | ||
1f6fe7cb NB |
2175 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2176 | { | |
2177 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2178 | struct t10_alua_lu_gp, lu_gp_group); | |
2179 | ||
2180 | core_alua_free_lu_gp(lu_gp); | |
2181 | } | |
2182 | ||
c66ac9db | 2183 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2184 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2185 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2186 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2187 | }; | |
2188 | ||
2189 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2190 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2191 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2192 | .ct_owner = THIS_MODULE, | |
2193 | }; | |
2194 | ||
2195 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2196 | ||
2197 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2198 | ||
2199 | static struct config_group *target_core_alua_create_lu_gp( | |
2200 | struct config_group *group, | |
2201 | const char *name) | |
2202 | { | |
2203 | struct t10_alua_lu_gp *lu_gp; | |
2204 | struct config_group *alua_lu_gp_cg = NULL; | |
2205 | struct config_item *alua_lu_gp_ci = NULL; | |
2206 | ||
2207 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2208 | if (IS_ERR(lu_gp)) | |
2209 | return NULL; | |
2210 | ||
2211 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2212 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2213 | ||
2214 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2215 | &target_core_alua_lu_gp_cit); | |
2216 | ||
2217 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated ALUA Logical Unit" | |
2218 | " Group: core/alua/lu_gps/%s\n", | |
2219 | config_item_name(alua_lu_gp_ci)); | |
2220 | ||
2221 | return alua_lu_gp_cg; | |
2222 | ||
2223 | } | |
2224 | ||
2225 | static void target_core_alua_drop_lu_gp( | |
2226 | struct config_group *group, | |
2227 | struct config_item *item) | |
2228 | { | |
2229 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2230 | struct t10_alua_lu_gp, lu_gp_group); | |
2231 | ||
2232 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing ALUA Logical Unit" | |
2233 | " Group: core/alua/lu_gps/%s, ID: %hu\n", | |
2234 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2235 | /* |
2236 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2237 | * -> target_core_alua_lu_gp_release() | |
2238 | */ | |
c66ac9db | 2239 | config_item_put(item); |
c66ac9db NB |
2240 | } |
2241 | ||
2242 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2243 | .make_group = &target_core_alua_create_lu_gp, | |
2244 | .drop_item = &target_core_alua_drop_lu_gp, | |
2245 | }; | |
2246 | ||
2247 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2248 | .ct_item_ops = NULL, | |
2249 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2250 | .ct_owner = THIS_MODULE, | |
2251 | }; | |
2252 | ||
2253 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2254 | ||
2255 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2256 | ||
2257 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2258 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2259 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2260 | target_core_alua_tg_pt_gp_##_name = \ | |
2261 | __CONFIGFS_EATTR(_name, _mode, \ | |
2262 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2263 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2264 | ||
2265 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2266 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2267 | target_core_alua_tg_pt_gp_##_name = \ | |
2268 | __CONFIGFS_EATTR_RO(_name, \ | |
2269 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2270 | ||
2271 | /* | |
2272 | * alua_access_state | |
2273 | */ | |
2274 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2275 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2276 | char *page) | |
2277 | { | |
2278 | return sprintf(page, "%d\n", | |
2279 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2280 | } | |
2281 | ||
2282 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2283 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2284 | const char *page, | |
2285 | size_t count) | |
2286 | { | |
2287 | struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; | |
2288 | unsigned long tmp; | |
2289 | int new_state, ret; | |
2290 | ||
2291 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) { | |
2292 | printk(KERN_ERR "Unable to do implict ALUA on non valid" | |
2293 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); | |
2294 | return -EINVAL; | |
2295 | } | |
2296 | ||
2297 | ret = strict_strtoul(page, 0, &tmp); | |
2298 | if (ret < 0) { | |
2299 | printk("Unable to extract new ALUA access state from" | |
2300 | " %s\n", page); | |
2301 | return -EINVAL; | |
2302 | } | |
2303 | new_state = (int)tmp; | |
2304 | ||
2305 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
2306 | printk(KERN_ERR "Unable to process implict configfs ALUA" | |
2307 | " transition while TPGS_IMPLICT_ALUA is diabled\n"); | |
2308 | return -EINVAL; | |
2309 | } | |
2310 | ||
2311 | ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, | |
2312 | NULL, NULL, new_state, 0); | |
2313 | return (!ret) ? count : -EINVAL; | |
2314 | } | |
2315 | ||
2316 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2317 | ||
2318 | /* | |
2319 | * alua_access_status | |
2320 | */ | |
2321 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2322 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2323 | char *page) | |
2324 | { | |
2325 | return sprintf(page, "%s\n", | |
2326 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2327 | } | |
2328 | ||
2329 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2330 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2331 | const char *page, | |
2332 | size_t count) | |
2333 | { | |
2334 | unsigned long tmp; | |
2335 | int new_status, ret; | |
2336 | ||
2337 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) { | |
2338 | printk(KERN_ERR "Unable to do set ALUA access status on non" | |
2339 | " valid tg_pt_gp ID: %hu\n", | |
2340 | tg_pt_gp->tg_pt_gp_valid_id); | |
2341 | return -EINVAL; | |
2342 | } | |
2343 | ||
2344 | ret = strict_strtoul(page, 0, &tmp); | |
2345 | if (ret < 0) { | |
2346 | printk(KERN_ERR "Unable to extract new ALUA access status" | |
2347 | " from %s\n", page); | |
2348 | return -EINVAL; | |
2349 | } | |
2350 | new_status = (int)tmp; | |
2351 | ||
2352 | if ((new_status != ALUA_STATUS_NONE) && | |
2353 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2354 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
2355 | printk(KERN_ERR "Illegal ALUA access status: 0x%02x\n", | |
2356 | new_status); | |
2357 | return -EINVAL; | |
2358 | } | |
2359 | ||
2360 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2361 | return count; | |
2362 | } | |
2363 | ||
2364 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2365 | ||
2366 | /* | |
2367 | * alua_access_type | |
2368 | */ | |
2369 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2370 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2371 | char *page) | |
2372 | { | |
2373 | return core_alua_show_access_type(tg_pt_gp, page); | |
2374 | } | |
2375 | ||
2376 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2377 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2378 | const char *page, | |
2379 | size_t count) | |
2380 | { | |
2381 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2382 | } | |
2383 | ||
2384 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2385 | ||
2386 | /* | |
2387 | * alua_write_metadata | |
2388 | */ | |
2389 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2390 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2391 | char *page) | |
2392 | { | |
2393 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2394 | } | |
2395 | ||
2396 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2397 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2398 | const char *page, | |
2399 | size_t count) | |
2400 | { | |
2401 | unsigned long tmp; | |
2402 | int ret; | |
2403 | ||
2404 | ret = strict_strtoul(page, 0, &tmp); | |
2405 | if (ret < 0) { | |
2406 | printk(KERN_ERR "Unable to extract alua_write_metadata\n"); | |
2407 | return -EINVAL; | |
2408 | } | |
2409 | ||
2410 | if ((tmp != 0) && (tmp != 1)) { | |
2411 | printk(KERN_ERR "Illegal value for alua_write_metadata:" | |
2412 | " %lu\n", tmp); | |
2413 | return -EINVAL; | |
2414 | } | |
2415 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2416 | ||
2417 | return count; | |
2418 | } | |
2419 | ||
2420 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2421 | ||
2422 | ||
2423 | ||
2424 | /* | |
2425 | * nonop_delay_msecs | |
2426 | */ | |
2427 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2428 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2429 | char *page) | |
2430 | { | |
2431 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2432 | ||
2433 | } | |
2434 | ||
2435 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2436 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2437 | const char *page, | |
2438 | size_t count) | |
2439 | { | |
2440 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2441 | } | |
2442 | ||
2443 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2444 | ||
2445 | /* | |
2446 | * trans_delay_msecs | |
2447 | */ | |
2448 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2449 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2450 | char *page) | |
2451 | { | |
2452 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2453 | } | |
2454 | ||
2455 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2456 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2457 | const char *page, | |
2458 | size_t count) | |
2459 | { | |
2460 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2461 | } | |
2462 | ||
2463 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2464 | ||
2465 | /* | |
2466 | * preferred | |
2467 | */ | |
2468 | ||
2469 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2470 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2471 | char *page) | |
2472 | { | |
2473 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2474 | } | |
2475 | ||
2476 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2477 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2478 | const char *page, | |
2479 | size_t count) | |
2480 | { | |
2481 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2482 | } | |
2483 | ||
2484 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2485 | ||
2486 | /* | |
2487 | * tg_pt_gp_id | |
2488 | */ | |
2489 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2490 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2491 | char *page) | |
2492 | { | |
2493 | if (!(tg_pt_gp->tg_pt_gp_valid_id)) | |
2494 | return 0; | |
2495 | ||
2496 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2497 | } | |
2498 | ||
2499 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2500 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2501 | const char *page, | |
2502 | size_t count) | |
2503 | { | |
2504 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2505 | unsigned long tg_pt_gp_id; | |
2506 | int ret; | |
2507 | ||
2508 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2509 | if (ret < 0) { | |
2510 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
2511 | " tg_pt_gp_id\n", ret); | |
2512 | return -EINVAL; | |
2513 | } | |
2514 | if (tg_pt_gp_id > 0x0000ffff) { | |
2515 | printk(KERN_ERR "ALUA tg_pt_gp_id: %lu exceeds maximum:" | |
2516 | " 0x0000ffff\n", tg_pt_gp_id); | |
2517 | return -EINVAL; | |
2518 | } | |
2519 | ||
2520 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2521 | if (ret < 0) | |
2522 | return -EINVAL; | |
2523 | ||
2524 | printk(KERN_INFO "Target_Core_ConfigFS: Set ALUA Target Port Group: " | |
2525 | "core/alua/tg_pt_gps/%s to ID: %hu\n", | |
2526 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2527 | tg_pt_gp->tg_pt_gp_id); | |
2528 | ||
2529 | return count; | |
2530 | } | |
2531 | ||
2532 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2533 | ||
2534 | /* | |
2535 | * members | |
2536 | */ | |
2537 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2538 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2539 | char *page) | |
2540 | { | |
2541 | struct se_port *port; | |
2542 | struct se_portal_group *tpg; | |
2543 | struct se_lun *lun; | |
2544 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2545 | ssize_t len = 0, cur_len; | |
2546 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2547 | ||
2548 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2549 | ||
2550 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2551 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2552 | tg_pt_gp_mem_list) { | |
2553 | port = tg_pt_gp_mem->tg_pt; | |
2554 | tpg = port->sep_tpg; | |
2555 | lun = port->sep_lun; | |
2556 | ||
2557 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2558 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2559 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2560 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2561 | config_item_name(&lun->lun_group.cg_item)); |
2562 | cur_len++; /* Extra byte for NULL terminator */ | |
2563 | ||
2564 | if ((cur_len + len) > PAGE_SIZE) { | |
2565 | printk(KERN_WARNING "Ran out of lu_gp_show_attr" | |
2566 | "_members buffer\n"); | |
2567 | break; | |
2568 | } | |
2569 | memcpy(page+len, buf, cur_len); | |
2570 | len += cur_len; | |
2571 | } | |
2572 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2573 | ||
2574 | return len; | |
2575 | } | |
2576 | ||
2577 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2578 | ||
2579 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2580 | tg_pt_gp_group); | |
2581 | ||
2582 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2583 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2584 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2585 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2586 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2587 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2588 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
2589 | &target_core_alua_tg_pt_gp_preferred.attr, | |
2590 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2591 | &target_core_alua_tg_pt_gp_members.attr, | |
2592 | NULL, | |
2593 | }; | |
2594 | ||
1f6fe7cb NB |
2595 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2596 | { | |
2597 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2598 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2599 | ||
2600 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2601 | } | |
2602 | ||
c66ac9db | 2603 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2604 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2605 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2606 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2607 | }; | |
2608 | ||
2609 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2610 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2611 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2612 | .ct_owner = THIS_MODULE, | |
2613 | }; | |
2614 | ||
2615 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2616 | ||
2617 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2618 | ||
2619 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2620 | struct config_group *group, | |
2621 | const char *name) | |
2622 | { | |
2623 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2624 | alua_tg_pt_gps_group); | |
2625 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2626 | struct se_subsystem_dev *su_dev = alua->t10_sub_dev; | |
2627 | struct config_group *alua_tg_pt_gp_cg = NULL; | |
2628 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2629 | ||
2630 | tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); | |
2631 | if (!(tg_pt_gp)) | |
2632 | return NULL; | |
2633 | ||
2634 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2635 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2636 | ||
2637 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2638 | &target_core_alua_tg_pt_gp_cit); | |
2639 | ||
2640 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated ALUA Target Port" | |
2641 | " Group: alua/tg_pt_gps/%s\n", | |
2642 | config_item_name(alua_tg_pt_gp_ci)); | |
2643 | ||
2644 | return alua_tg_pt_gp_cg; | |
2645 | } | |
2646 | ||
2647 | static void target_core_alua_drop_tg_pt_gp( | |
2648 | struct config_group *group, | |
2649 | struct config_item *item) | |
2650 | { | |
2651 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2652 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2653 | ||
2654 | printk(KERN_INFO "Target_Core_ConfigFS: Releasing ALUA Target Port" | |
2655 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", | |
2656 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2657 | /* |
2658 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2659 | * -> target_core_alua_tg_pt_gp_release(). | |
2660 | */ | |
c66ac9db | 2661 | config_item_put(item); |
c66ac9db NB |
2662 | } |
2663 | ||
2664 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2665 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2666 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2667 | }; | |
2668 | ||
2669 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2670 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2671 | .ct_owner = THIS_MODULE, | |
2672 | }; | |
2673 | ||
2674 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2675 | ||
2676 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2677 | ||
2678 | /* | |
2679 | * target_core_alua_cit is a ConfigFS group that lives under | |
2680 | * /sys/kernel/config/target/core/alua. There are default groups | |
2681 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2682 | * target_core_alua_cit in target_core_init_configfs() below. | |
2683 | */ | |
2684 | static struct config_item_type target_core_alua_cit = { | |
2685 | .ct_item_ops = NULL, | |
2686 | .ct_attrs = NULL, | |
2687 | .ct_owner = THIS_MODULE, | |
2688 | }; | |
2689 | ||
2690 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2691 | ||
12d23384 NB |
2692 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2693 | ||
2694 | static struct config_group *target_core_stat_mkdir( | |
2695 | struct config_group *group, | |
2696 | const char *name) | |
2697 | { | |
2698 | return ERR_PTR(-ENOSYS); | |
2699 | } | |
2700 | ||
2701 | static void target_core_stat_rmdir( | |
2702 | struct config_group *group, | |
2703 | struct config_item *item) | |
2704 | { | |
2705 | return; | |
2706 | } | |
2707 | ||
2708 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2709 | .make_group = &target_core_stat_mkdir, | |
2710 | .drop_item = &target_core_stat_rmdir, | |
2711 | }; | |
2712 | ||
2713 | static struct config_item_type target_core_stat_cit = { | |
2714 | .ct_group_ops = &target_core_stat_group_ops, | |
2715 | .ct_owner = THIS_MODULE, | |
2716 | }; | |
2717 | ||
2718 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2719 | ||
c66ac9db NB |
2720 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2721 | ||
2722 | static struct config_group *target_core_make_subdev( | |
2723 | struct config_group *group, | |
2724 | const char *name) | |
2725 | { | |
2726 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2727 | struct se_subsystem_dev *se_dev; | |
2728 | struct se_subsystem_api *t; | |
2729 | struct config_item *hba_ci = &group->cg_item; | |
2730 | struct se_hba *hba = item_to_hba(hba_ci); | |
2731 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; | |
12d23384 NB |
2732 | struct config_group *dev_stat_grp = NULL; |
2733 | int errno = -ENOMEM, ret; | |
c66ac9db | 2734 | |
12d23384 NB |
2735 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2736 | if (ret) | |
2737 | return ERR_PTR(ret); | |
c66ac9db NB |
2738 | /* |
2739 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2740 | */ | |
2741 | t = hba->transport; | |
2742 | ||
2743 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
2744 | if (!se_dev) { | |
2745 | printk(KERN_ERR "Unable to allocate memory for" | |
2746 | " struct se_subsystem_dev\n"); | |
2747 | goto unlock; | |
2748 | } | |
e3d6f909 | 2749 | INIT_LIST_HEAD(&se_dev->se_dev_node); |
c66ac9db NB |
2750 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
2751 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
2752 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
2753 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
2754 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
2755 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
2756 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
2757 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
2758 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 2759 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
2760 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
2761 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
2762 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
2763 | ||
2764 | se_dev->se_dev_hba = hba; | |
2765 | dev_cg = &se_dev->se_dev_group; | |
2766 | ||
12d23384 | 2767 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, |
c66ac9db NB |
2768 | GFP_KERNEL); |
2769 | if (!(dev_cg->default_groups)) | |
2770 | goto out; | |
2771 | /* | |
2772 | * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr | |
2773 | * for ->allocate_virtdevice() | |
2774 | * | |
2775 | * se_dev->se_dev_ptr will be set after ->create_virtdev() | |
2776 | * has been called successfully in the next level up in the | |
2777 | * configfs tree for device object's struct config_group. | |
2778 | */ | |
2779 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); | |
2780 | if (!(se_dev->se_dev_su_ptr)) { | |
2781 | printk(KERN_ERR "Unable to locate subsystem dependent pointer" | |
2782 | " from allocate_virtdevice()\n"); | |
2783 | goto out; | |
2784 | } | |
e3d6f909 AG |
2785 | spin_lock(&se_device_lock); |
2786 | list_add_tail(&se_dev->se_dev_node, &se_dev_list); | |
2787 | spin_unlock(&se_device_lock); | |
c66ac9db NB |
2788 | |
2789 | config_group_init_type_name(&se_dev->se_dev_group, name, | |
2790 | &target_core_dev_cit); | |
2791 | config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", | |
2792 | &target_core_dev_attrib_cit); | |
2793 | config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", | |
2794 | &target_core_dev_pr_cit); | |
2795 | config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", | |
2796 | &target_core_dev_wwn_cit); | |
2797 | config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, | |
2798 | "alua", &target_core_alua_tg_pt_gps_cit); | |
12d23384 NB |
2799 | config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, |
2800 | "statistics", &target_core_stat_cit); | |
2801 | ||
c66ac9db NB |
2802 | dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; |
2803 | dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; | |
2804 | dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; | |
2805 | dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; | |
12d23384 NB |
2806 | dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; |
2807 | dev_cg->default_groups[5] = NULL; | |
c66ac9db | 2808 | /* |
12d23384 | 2809 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db NB |
2810 | */ |
2811 | tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); | |
2812 | if (!(tg_pt_gp)) | |
2813 | goto out; | |
2814 | ||
e3d6f909 | 2815 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2816 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2817 | GFP_KERNEL); | |
2818 | if (!(tg_pt_gp_cg->default_groups)) { | |
2819 | printk(KERN_ERR "Unable to allocate tg_pt_gp_cg->" | |
2820 | "default_groups\n"); | |
2821 | goto out; | |
2822 | } | |
2823 | ||
2824 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2825 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2826 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2827 | tg_pt_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2828 | se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
12d23384 NB |
2829 | /* |
2830 | * Add core/$HBA/$DEV/statistics/ default groups | |
2831 | */ | |
e3d6f909 | 2832 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2833 | dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, |
2834 | GFP_KERNEL); | |
2835 | if (!dev_stat_grp->default_groups) { | |
2836 | printk(KERN_ERR "Unable to allocate dev_stat_grp->default_groups\n"); | |
2837 | goto out; | |
2838 | } | |
2839 | target_stat_setup_dev_default_groups(se_dev); | |
c66ac9db NB |
2840 | |
2841 | printk(KERN_INFO "Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" | |
2842 | " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); | |
2843 | ||
2844 | mutex_unlock(&hba->hba_access_mutex); | |
2845 | return &se_dev->se_dev_group; | |
2846 | out: | |
e3d6f909 AG |
2847 | if (se_dev->t10_alua.default_tg_pt_gp) { |
2848 | core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp); | |
2849 | se_dev->t10_alua.default_tg_pt_gp = NULL; | |
c66ac9db | 2850 | } |
12d23384 NB |
2851 | if (dev_stat_grp) |
2852 | kfree(dev_stat_grp->default_groups); | |
c66ac9db NB |
2853 | if (tg_pt_gp_cg) |
2854 | kfree(tg_pt_gp_cg->default_groups); | |
2855 | if (dev_cg) | |
2856 | kfree(dev_cg->default_groups); | |
2857 | if (se_dev->se_dev_su_ptr) | |
2858 | t->free_device(se_dev->se_dev_su_ptr); | |
2859 | kfree(se_dev); | |
2860 | unlock: | |
2861 | mutex_unlock(&hba->hba_access_mutex); | |
12d23384 | 2862 | return ERR_PTR(errno); |
c66ac9db NB |
2863 | } |
2864 | ||
2865 | static void target_core_drop_subdev( | |
2866 | struct config_group *group, | |
2867 | struct config_item *item) | |
2868 | { | |
2869 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2870 | struct se_subsystem_dev, se_dev_group); | |
2871 | struct se_hba *hba; | |
2872 | struct se_subsystem_api *t; | |
2873 | struct config_item *df_item; | |
12d23384 | 2874 | struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2875 | int i; |
c66ac9db NB |
2876 | |
2877 | hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); | |
2878 | ||
1f6fe7cb | 2879 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db NB |
2880 | t = hba->transport; |
2881 | ||
e3d6f909 AG |
2882 | spin_lock(&se_device_lock); |
2883 | list_del(&se_dev->se_dev_node); | |
2884 | spin_unlock(&se_device_lock); | |
c66ac9db | 2885 | |
e3d6f909 | 2886 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2887 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2888 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2889 | dev_stat_grp->default_groups[i] = NULL; | |
2890 | config_item_put(df_item); | |
2891 | } | |
2892 | kfree(dev_stat_grp->default_groups); | |
2893 | ||
e3d6f909 | 2894 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2895 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2896 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2897 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2898 | config_item_put(df_item); | |
2899 | } | |
2900 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2901 | /* |
2902 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2903 | * directly from target_core_alua_tg_pt_gp_release(). | |
2904 | */ | |
e3d6f909 | 2905 | se_dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db NB |
2906 | |
2907 | dev_cg = &se_dev->se_dev_group; | |
2908 | for (i = 0; dev_cg->default_groups[i]; i++) { | |
2909 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2910 | dev_cg->default_groups[i] = NULL; | |
2911 | config_item_put(df_item); | |
2912 | } | |
c66ac9db | 2913 | /* |
1f6fe7cb NB |
2914 | * The releasing of se_dev and associated se_dev->se_dev_ptr is done |
2915 | * from target_core_dev_item_ops->release() ->target_core_dev_release(). | |
c66ac9db | 2916 | */ |
1f6fe7cb | 2917 | config_item_put(item); |
c66ac9db | 2918 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2919 | } |
2920 | ||
2921 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2922 | .make_group = target_core_make_subdev, | |
2923 | .drop_item = target_core_drop_subdev, | |
2924 | }; | |
2925 | ||
2926 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2927 | #define SE_HBA_ATTR(_name, _mode) \ | |
2928 | static struct target_core_hba_attribute \ | |
2929 | target_core_hba_##_name = \ | |
2930 | __CONFIGFS_EATTR(_name, _mode, \ | |
2931 | target_core_hba_show_attr_##_name, \ | |
2932 | target_core_hba_store_attr_##_name); | |
2933 | ||
2934 | #define SE_HBA_ATTR_RO(_name) \ | |
2935 | static struct target_core_hba_attribute \ | |
2936 | target_core_hba_##_name = \ | |
2937 | __CONFIGFS_EATTR_RO(_name, \ | |
2938 | target_core_hba_show_attr_##_name); | |
2939 | ||
2940 | static ssize_t target_core_hba_show_attr_hba_info( | |
2941 | struct se_hba *hba, | |
2942 | char *page) | |
2943 | { | |
2944 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2945 | hba->hba_id, hba->transport->name, | |
2946 | TARGET_CORE_CONFIGFS_VERSION); | |
2947 | } | |
2948 | ||
2949 | SE_HBA_ATTR_RO(hba_info); | |
2950 | ||
2951 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2952 | char *page) | |
2953 | { | |
2954 | int hba_mode = 0; | |
2955 | ||
2956 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2957 | hba_mode = 1; | |
2958 | ||
2959 | return sprintf(page, "%d\n", hba_mode); | |
2960 | } | |
2961 | ||
2962 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2963 | const char *page, size_t count) | |
2964 | { | |
2965 | struct se_subsystem_api *transport = hba->transport; | |
2966 | unsigned long mode_flag; | |
2967 | int ret; | |
2968 | ||
2969 | if (transport->pmode_enable_hba == NULL) | |
2970 | return -EINVAL; | |
2971 | ||
2972 | ret = strict_strtoul(page, 0, &mode_flag); | |
2973 | if (ret < 0) { | |
2974 | printk(KERN_ERR "Unable to extract hba mode flag: %d\n", ret); | |
2975 | return -EINVAL; | |
2976 | } | |
2977 | ||
2978 | spin_lock(&hba->device_lock); | |
2979 | if (!(list_empty(&hba->hba_dev_list))) { | |
2980 | printk(KERN_ERR "Unable to set hba_mode with active devices\n"); | |
2981 | spin_unlock(&hba->device_lock); | |
2982 | return -EINVAL; | |
2983 | } | |
2984 | spin_unlock(&hba->device_lock); | |
2985 | ||
2986 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2987 | if (ret < 0) | |
2988 | return -EINVAL; | |
2989 | if (ret > 0) | |
2990 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2991 | else if (ret == 0) | |
2992 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2993 | ||
2994 | return count; | |
2995 | } | |
2996 | ||
2997 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2998 | ||
2999 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
3000 | ||
1f6fe7cb NB |
3001 | static void target_core_hba_release(struct config_item *item) |
3002 | { | |
3003 | struct se_hba *hba = container_of(to_config_group(item), | |
3004 | struct se_hba, hba_group); | |
3005 | core_delete_hba(hba); | |
3006 | } | |
3007 | ||
c66ac9db NB |
3008 | static struct configfs_attribute *target_core_hba_attrs[] = { |
3009 | &target_core_hba_hba_info.attr, | |
3010 | &target_core_hba_hba_mode.attr, | |
3011 | NULL, | |
3012 | }; | |
3013 | ||
3014 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3015 | .release = target_core_hba_release, |
c66ac9db NB |
3016 | .show_attribute = target_core_hba_attr_show, |
3017 | .store_attribute = target_core_hba_attr_store, | |
3018 | }; | |
3019 | ||
3020 | static struct config_item_type target_core_hba_cit = { | |
3021 | .ct_item_ops = &target_core_hba_item_ops, | |
3022 | .ct_group_ops = &target_core_hba_group_ops, | |
3023 | .ct_attrs = target_core_hba_attrs, | |
3024 | .ct_owner = THIS_MODULE, | |
3025 | }; | |
3026 | ||
3027 | static struct config_group *target_core_call_addhbatotarget( | |
3028 | struct config_group *group, | |
3029 | const char *name) | |
3030 | { | |
3031 | char *se_plugin_str, *str, *str2; | |
3032 | struct se_hba *hba; | |
3033 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3034 | unsigned long plugin_dep_id = 0; | |
3035 | int ret; | |
3036 | ||
3037 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3038 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
c66ac9db NB |
3039 | printk(KERN_ERR "Passed *name strlen(): %d exceeds" |
3040 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), | |
3041 | TARGET_CORE_NAME_MAX_LEN); | |
3042 | return ERR_PTR(-ENAMETOOLONG); | |
3043 | } | |
3044 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3045 | ||
3046 | str = strstr(buf, "_"); | |
3047 | if (!(str)) { | |
3048 | printk(KERN_ERR "Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
3049 | return ERR_PTR(-EINVAL); | |
3050 | } | |
3051 | se_plugin_str = buf; | |
3052 | /* | |
3053 | * Special case for subsystem plugins that have "_" in their names. | |
3054 | * Namely rd_direct and rd_mcp.. | |
3055 | */ | |
3056 | str2 = strstr(str+1, "_"); | |
3057 | if ((str2)) { | |
3058 | *str2 = '\0'; /* Terminate for *se_plugin_str */ | |
3059 | str2++; /* Skip to start of plugin dependent ID */ | |
3060 | str = str2; | |
3061 | } else { | |
3062 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3063 | str++; /* Skip to start of plugin dependent ID */ | |
3064 | } | |
3065 | ||
3066 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
3067 | if (ret < 0) { | |
3068 | printk(KERN_ERR "strict_strtoul() returned %d for" | |
3069 | " plugin_dep_id\n", ret); | |
3070 | return ERR_PTR(-EINVAL); | |
3071 | } | |
3072 | /* | |
3073 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3074 | */ | |
3075 | if (transport_subsystem_check_init() < 0) | |
3076 | return ERR_PTR(-EINVAL); | |
3077 | ||
3078 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3079 | if (IS_ERR(hba)) | |
3080 | return ERR_CAST(hba); | |
3081 | ||
3082 | config_group_init_type_name(&hba->hba_group, name, | |
3083 | &target_core_hba_cit); | |
3084 | ||
3085 | return &hba->hba_group; | |
3086 | } | |
3087 | ||
3088 | static void target_core_call_delhbafromtarget( | |
3089 | struct config_group *group, | |
3090 | struct config_item *item) | |
3091 | { | |
1f6fe7cb NB |
3092 | /* |
3093 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3094 | * -> target_core_hba_release() | |
3095 | */ | |
c66ac9db | 3096 | config_item_put(item); |
c66ac9db NB |
3097 | } |
3098 | ||
3099 | static struct configfs_group_operations target_core_group_ops = { | |
3100 | .make_group = target_core_call_addhbatotarget, | |
3101 | .drop_item = target_core_call_delhbafromtarget, | |
3102 | }; | |
3103 | ||
3104 | static struct config_item_type target_core_cit = { | |
3105 | .ct_item_ops = NULL, | |
3106 | .ct_group_ops = &target_core_group_ops, | |
3107 | .ct_attrs = NULL, | |
3108 | .ct_owner = THIS_MODULE, | |
3109 | }; | |
3110 | ||
3111 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3112 | ||
54550fab | 3113 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3114 | { |
3115 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3116 | struct config_group *lu_gp_cg = NULL; | |
3117 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3118 | struct t10_alua_lu_gp *lu_gp; |
3119 | int ret; | |
3120 | ||
3121 | printk(KERN_INFO "TARGET_CORE[0]: Loading Generic Kernel Storage" | |
3122 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", | |
3123 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3124 | ||
3125 | subsys = target_core_subsystem[0]; | |
3126 | config_group_init(&subsys->su_group); | |
3127 | mutex_init(&subsys->su_mutex); | |
3128 | ||
3129 | INIT_LIST_HEAD(&g_tf_list); | |
3130 | mutex_init(&g_tf_lock); | |
e3d6f909 | 3131 | ret = init_se_kmem_caches(); |
c66ac9db | 3132 | if (ret < 0) |
e3d6f909 | 3133 | return ret; |
c66ac9db NB |
3134 | /* |
3135 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3136 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3137 | */ | |
3138 | target_cg = &subsys->su_group; | |
3139 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3140 | GFP_KERNEL); | |
3141 | if (!(target_cg->default_groups)) { | |
3142 | printk(KERN_ERR "Unable to allocate target_cg->default_groups\n"); | |
3143 | goto out_global; | |
3144 | } | |
3145 | ||
e3d6f909 | 3146 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3147 | "core", &target_core_cit); |
e3d6f909 | 3148 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3149 | target_cg->default_groups[1] = NULL; |
3150 | /* | |
3151 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3152 | */ | |
e3d6f909 | 3153 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3154 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3155 | GFP_KERNEL); | |
3156 | if (!(hba_cg->default_groups)) { | |
3157 | printk(KERN_ERR "Unable to allocate hba_cg->default_groups\n"); | |
3158 | goto out_global; | |
3159 | } | |
e3d6f909 | 3160 | config_group_init_type_name(&alua_group, |
c66ac9db | 3161 | "alua", &target_core_alua_cit); |
e3d6f909 | 3162 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3163 | hba_cg->default_groups[1] = NULL; |
3164 | /* | |
3165 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3166 | * groups under /sys/kernel/config/target/core/alua/ | |
3167 | */ | |
e3d6f909 | 3168 | alua_cg = &alua_group; |
c66ac9db NB |
3169 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3170 | GFP_KERNEL); | |
3171 | if (!(alua_cg->default_groups)) { | |
3172 | printk(KERN_ERR "Unable to allocate alua_cg->default_groups\n"); | |
3173 | goto out_global; | |
3174 | } | |
3175 | ||
e3d6f909 | 3176 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3177 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3178 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3179 | alua_cg->default_groups[1] = NULL; |
3180 | /* | |
3181 | * Add core/alua/lu_gps/default_lu_gp | |
3182 | */ | |
3183 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
3184 | if (IS_ERR(lu_gp)) | |
3185 | goto out_global; | |
3186 | ||
e3d6f909 | 3187 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3188 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3189 | GFP_KERNEL); | |
3190 | if (!(lu_gp_cg->default_groups)) { | |
3191 | printk(KERN_ERR "Unable to allocate lu_gp_cg->default_groups\n"); | |
3192 | goto out_global; | |
3193 | } | |
3194 | ||
3195 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3196 | &target_core_alua_lu_gp_cit); | |
3197 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3198 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3199 | default_lu_gp = lu_gp; |
c66ac9db NB |
3200 | /* |
3201 | * Register the target_core_mod subsystem with configfs. | |
3202 | */ | |
3203 | ret = configfs_register_subsystem(subsys); | |
3204 | if (ret < 0) { | |
3205 | printk(KERN_ERR "Error %d while registering subsystem %s\n", | |
3206 | ret, subsys->su_group.cg_item.ci_namebuf); | |
3207 | goto out_global; | |
3208 | } | |
3209 | printk(KERN_INFO "TARGET_CORE[0]: Initialized ConfigFS Fabric" | |
3210 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" | |
3211 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3212 | /* | |
3213 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3214 | */ | |
3215 | ret = rd_module_init(); | |
3216 | if (ret < 0) | |
3217 | goto out; | |
3218 | ||
3219 | if (core_dev_setup_virtual_lun0() < 0) | |
3220 | goto out; | |
3221 | ||
c66ac9db NB |
3222 | return 0; |
3223 | ||
3224 | out: | |
3225 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3226 | core_dev_release_virtual_lun0(); |
3227 | rd_module_exit(); | |
3228 | out_global: | |
e3d6f909 AG |
3229 | if (default_lu_gp) { |
3230 | core_alua_free_lu_gp(default_lu_gp); | |
3231 | default_lu_gp = NULL; | |
c66ac9db NB |
3232 | } |
3233 | if (lu_gp_cg) | |
3234 | kfree(lu_gp_cg->default_groups); | |
3235 | if (alua_cg) | |
3236 | kfree(alua_cg->default_groups); | |
3237 | if (hba_cg) | |
3238 | kfree(hba_cg->default_groups); | |
3239 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3240 | release_se_kmem_caches(); |
3241 | return ret; | |
c66ac9db NB |
3242 | } |
3243 | ||
54550fab | 3244 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3245 | { |
3246 | struct configfs_subsystem *subsys; | |
3247 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3248 | struct config_item *item; | |
3249 | int i; | |
3250 | ||
c66ac9db NB |
3251 | subsys = target_core_subsystem[0]; |
3252 | ||
e3d6f909 | 3253 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3254 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3255 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3256 | lu_gp_cg->default_groups[i] = NULL; | |
3257 | config_item_put(item); | |
3258 | } | |
3259 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3260 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3261 | |
e3d6f909 | 3262 | alua_cg = &alua_group; |
c66ac9db NB |
3263 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3264 | item = &alua_cg->default_groups[i]->cg_item; | |
3265 | alua_cg->default_groups[i] = NULL; | |
3266 | config_item_put(item); | |
3267 | } | |
3268 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3269 | alua_cg->default_groups = NULL; |
c66ac9db | 3270 | |
e3d6f909 | 3271 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3272 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3273 | item = &hba_cg->default_groups[i]->cg_item; | |
3274 | hba_cg->default_groups[i] = NULL; | |
3275 | config_item_put(item); | |
3276 | } | |
3277 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3278 | hba_cg->default_groups = NULL; |
3279 | /* | |
3280 | * We expect subsys->su_group.default_groups to be released | |
3281 | * by configfs subsystem provider logic.. | |
3282 | */ | |
3283 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3284 | kfree(subsys->su_group.default_groups); |
3285 | ||
e3d6f909 AG |
3286 | core_alua_free_lu_gp(default_lu_gp); |
3287 | default_lu_gp = NULL; | |
7c2bf6e9 | 3288 | |
c66ac9db NB |
3289 | printk(KERN_INFO "TARGET_CORE[0]: Released ConfigFS Fabric" |
3290 | " Infrastructure\n"); | |
3291 | ||
c66ac9db NB |
3292 | core_dev_release_virtual_lun0(); |
3293 | rd_module_exit(); | |
e3d6f909 | 3294 | release_se_kmem_caches(); |
c66ac9db NB |
3295 | } |
3296 | ||
3297 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3298 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3299 | MODULE_LICENSE("GPL"); | |
3300 | ||
3301 | module_init(target_core_init_configfs); | |
3302 | module_exit(target_core_exit_configfs); |