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c66ac9db NB |
1 | /******************************************************************************* |
2 | * Filename: target_core_configfs.c | |
3 | * | |
4 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
5 | * | |
12d23384 NB |
6 | * Copyright (c) 2008-2011 Rising Tide Systems |
7 | * Copyright (c) 2008-2011 Linux-iSCSI.org | |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | ****************************************************************************/ | |
23 | ||
24 | #include <linux/module.h> | |
25 | #include <linux/moduleparam.h> | |
c66ac9db NB |
26 | #include <generated/utsrelease.h> |
27 | #include <linux/utsname.h> | |
28 | #include <linux/init.h> | |
29 | #include <linux/fs.h> | |
30 | #include <linux/namei.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/delay.h> | |
34 | #include <linux/unistd.h> | |
35 | #include <linux/string.h> | |
36 | #include <linux/parser.h> | |
37 | #include <linux/syscalls.h> | |
38 | #include <linux/configfs.h> | |
e3d6f909 | 39 | #include <linux/spinlock.h> |
c66ac9db NB |
40 | |
41 | #include <target/target_core_base.h> | |
42 | #include <target/target_core_device.h> | |
43 | #include <target/target_core_transport.h> | |
44 | #include <target/target_core_fabric_ops.h> | |
45 | #include <target/target_core_fabric_configfs.h> | |
46 | #include <target/target_core_configfs.h> | |
47 | #include <target/configfs_macros.h> | |
48 | ||
49 | #include "target_core_alua.h" | |
50 | #include "target_core_hba.h" | |
51 | #include "target_core_pr.h" | |
52 | #include "target_core_rd.h" | |
12d23384 | 53 | #include "target_core_stat.h" |
c66ac9db | 54 | |
e3d6f909 AG |
55 | extern struct t10_alua_lu_gp *default_lu_gp; |
56 | ||
c66ac9db NB |
57 | static struct list_head g_tf_list; |
58 | static struct mutex g_tf_lock; | |
59 | ||
60 | struct target_core_configfs_attribute { | |
61 | struct configfs_attribute attr; | |
62 | ssize_t (*show)(void *, char *); | |
63 | ssize_t (*store)(void *, const char *, size_t); | |
64 | }; | |
65 | ||
e3d6f909 AG |
66 | static struct config_group target_core_hbagroup; |
67 | static struct config_group alua_group; | |
68 | static struct config_group alua_lu_gps_group; | |
69 | ||
c66ac9db NB |
70 | static inline struct se_hba * |
71 | item_to_hba(struct config_item *item) | |
72 | { | |
73 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
74 | } | |
75 | ||
76 | /* | |
77 | * Attributes for /sys/kernel/config/target/ | |
78 | */ | |
79 | static ssize_t target_core_attr_show(struct config_item *item, | |
80 | struct configfs_attribute *attr, | |
81 | char *page) | |
82 | { | |
83 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
84 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
85 | utsname()->sysname, utsname()->machine); | |
86 | } | |
87 | ||
88 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
89 | .show_attribute = target_core_attr_show, | |
90 | }; | |
91 | ||
92 | static struct configfs_attribute target_core_item_attr_version = { | |
93 | .ca_owner = THIS_MODULE, | |
94 | .ca_name = "version", | |
95 | .ca_mode = S_IRUGO, | |
96 | }; | |
97 | ||
98 | static struct target_fabric_configfs *target_core_get_fabric( | |
99 | const char *name) | |
100 | { | |
101 | struct target_fabric_configfs *tf; | |
102 | ||
6708bb27 | 103 | if (!name) |
c66ac9db NB |
104 | return NULL; |
105 | ||
106 | mutex_lock(&g_tf_lock); | |
107 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
6708bb27 | 108 | if (!strcmp(tf->tf_name, name)) { |
c66ac9db NB |
109 | atomic_inc(&tf->tf_access_cnt); |
110 | mutex_unlock(&g_tf_lock); | |
111 | return tf; | |
112 | } | |
113 | } | |
114 | mutex_unlock(&g_tf_lock); | |
115 | ||
116 | return NULL; | |
117 | } | |
118 | ||
119 | /* | |
120 | * Called from struct target_core_group_ops->make_group() | |
121 | */ | |
122 | static struct config_group *target_core_register_fabric( | |
123 | struct config_group *group, | |
124 | const char *name) | |
125 | { | |
126 | struct target_fabric_configfs *tf; | |
127 | int ret; | |
128 | ||
6708bb27 | 129 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 130 | " %s\n", group, name); |
c66ac9db NB |
131 | /* |
132 | * Below are some hardcoded request_module() calls to automatically | |
133 | * local fabric modules when the following is called: | |
134 | * | |
135 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME | |
136 | * | |
137 | * Note that this does not limit which TCM fabric module can be | |
138 | * registered, but simply provids auto loading logic for modules with | |
139 | * mkdir(2) system calls with known TCM fabric modules. | |
140 | */ | |
6708bb27 | 141 | if (!strncmp(name, "iscsi", 5)) { |
c66ac9db NB |
142 | /* |
143 | * Automatically load the LIO Target fabric module when the | |
144 | * following is called: | |
145 | * | |
146 | * mkdir -p $CONFIGFS/target/iscsi | |
147 | */ | |
148 | ret = request_module("iscsi_target_mod"); | |
149 | if (ret < 0) { | |
6708bb27 | 150 | pr_err("request_module() failed for" |
c66ac9db NB |
151 | " iscsi_target_mod.ko: %d\n", ret); |
152 | return ERR_PTR(-EINVAL); | |
153 | } | |
6708bb27 | 154 | } else if (!strncmp(name, "loopback", 8)) { |
c66ac9db NB |
155 | /* |
156 | * Automatically load the tcm_loop fabric module when the | |
157 | * following is called: | |
158 | * | |
159 | * mkdir -p $CONFIGFS/target/loopback | |
160 | */ | |
161 | ret = request_module("tcm_loop"); | |
162 | if (ret < 0) { | |
6708bb27 | 163 | pr_err("request_module() failed for" |
c66ac9db NB |
164 | " tcm_loop.ko: %d\n", ret); |
165 | return ERR_PTR(-EINVAL); | |
166 | } | |
167 | } | |
168 | ||
169 | tf = target_core_get_fabric(name); | |
6708bb27 AG |
170 | if (!tf) { |
171 | pr_err("target_core_get_fabric() failed for %s\n", | |
c66ac9db NB |
172 | name); |
173 | return ERR_PTR(-EINVAL); | |
174 | } | |
6708bb27 | 175 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
c66ac9db NB |
176 | " %s\n", tf->tf_name); |
177 | /* | |
178 | * On a successful target_core_get_fabric() look, the returned | |
179 | * struct target_fabric_configfs *tf will contain a usage reference. | |
180 | */ | |
6708bb27 | 181 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
c66ac9db NB |
182 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); |
183 | ||
184 | tf->tf_group.default_groups = tf->tf_default_groups; | |
185 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
186 | tf->tf_group.default_groups[1] = NULL; | |
187 | ||
188 | config_group_init_type_name(&tf->tf_group, name, | |
189 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
190 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", | |
191 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); | |
192 | ||
6708bb27 | 193 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db NB |
194 | " %s\n", tf->tf_group.cg_item.ci_name); |
195 | /* | |
196 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
197 | */ | |
198 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
199 | tf->tf_fabric = &tf->tf_group.cg_item; | |
6708bb27 | 200 | pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" |
c66ac9db NB |
201 | " for %s\n", name); |
202 | ||
203 | return &tf->tf_group; | |
204 | } | |
205 | ||
206 | /* | |
207 | * Called from struct target_core_group_ops->drop_item() | |
208 | */ | |
209 | static void target_core_deregister_fabric( | |
210 | struct config_group *group, | |
211 | struct config_item *item) | |
212 | { | |
213 | struct target_fabric_configfs *tf = container_of( | |
214 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
215 | struct config_group *tf_group; | |
216 | struct config_item *df_item; | |
217 | int i; | |
218 | ||
6708bb27 | 219 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
220 | " tf list\n", config_item_name(item)); |
221 | ||
6708bb27 | 222 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
c66ac9db NB |
223 | " %s\n", tf->tf_name); |
224 | atomic_dec(&tf->tf_access_cnt); | |
225 | ||
6708bb27 | 226 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" |
c66ac9db NB |
227 | " tf->tf_fabric for %s\n", tf->tf_name); |
228 | tf->tf_fabric = NULL; | |
229 | ||
6708bb27 | 230 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
231 | " %s\n", config_item_name(item)); |
232 | ||
233 | tf_group = &tf->tf_group; | |
234 | for (i = 0; tf_group->default_groups[i]; i++) { | |
235 | df_item = &tf_group->default_groups[i]->cg_item; | |
236 | tf_group->default_groups[i] = NULL; | |
237 | config_item_put(df_item); | |
238 | } | |
239 | config_item_put(item); | |
240 | } | |
241 | ||
242 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
243 | .make_group = &target_core_register_fabric, | |
244 | .drop_item = &target_core_deregister_fabric, | |
245 | }; | |
246 | ||
247 | /* | |
248 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
249 | */ | |
250 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
251 | &target_core_item_attr_version, | |
252 | NULL, | |
253 | }; | |
254 | ||
255 | /* | |
256 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
257 | */ | |
258 | static struct config_item_type target_core_fabrics_item = { | |
259 | .ct_item_ops = &target_core_fabric_item_ops, | |
260 | .ct_group_ops = &target_core_fabric_group_ops, | |
261 | .ct_attrs = target_core_fabric_item_attrs, | |
262 | .ct_owner = THIS_MODULE, | |
263 | }; | |
264 | ||
265 | static struct configfs_subsystem target_core_fabrics = { | |
266 | .su_group = { | |
267 | .cg_item = { | |
268 | .ci_namebuf = "target", | |
269 | .ci_type = &target_core_fabrics_item, | |
270 | }, | |
271 | }, | |
272 | }; | |
273 | ||
274 | static struct configfs_subsystem *target_core_subsystem[] = { | |
275 | &target_core_fabrics, | |
276 | NULL, | |
277 | }; | |
278 | ||
279 | /*############################################################################## | |
280 | // Start functions called by external Target Fabrics Modules | |
281 | //############################################################################*/ | |
282 | ||
283 | /* | |
284 | * First function called by fabric modules to: | |
285 | * | |
286 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
287 | * 2) Add struct target_fabric_configfs to g_tf_list | |
288 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
289 | * into target_fabric_configfs_register(). | |
290 | */ | |
291 | struct target_fabric_configfs *target_fabric_configfs_init( | |
292 | struct module *fabric_mod, | |
293 | const char *name) | |
294 | { | |
295 | struct target_fabric_configfs *tf; | |
296 | ||
c66ac9db | 297 | if (!(name)) { |
6708bb27 | 298 | pr_err("Unable to locate passed fabric name\n"); |
e3d6f909 | 299 | return ERR_PTR(-EINVAL); |
c66ac9db | 300 | } |
60d645a4 | 301 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 302 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
c66ac9db | 303 | "_NAME_SIZE\n", name); |
e3d6f909 | 304 | return ERR_PTR(-EINVAL); |
c66ac9db NB |
305 | } |
306 | ||
307 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 308 | if (!tf) |
e3d6f909 | 309 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
310 | |
311 | INIT_LIST_HEAD(&tf->tf_list); | |
312 | atomic_set(&tf->tf_access_cnt, 0); | |
313 | /* | |
314 | * Setup the default generic struct config_item_type's (cits) in | |
315 | * struct target_fabric_configfs->tf_cit_tmpl | |
316 | */ | |
317 | tf->tf_module = fabric_mod; | |
318 | target_fabric_setup_cits(tf); | |
319 | ||
320 | tf->tf_subsys = target_core_subsystem[0]; | |
321 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
322 | ||
323 | mutex_lock(&g_tf_lock); | |
324 | list_add_tail(&tf->tf_list, &g_tf_list); | |
325 | mutex_unlock(&g_tf_lock); | |
326 | ||
6708bb27 | 327 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" |
c66ac9db | 328 | ">>>>>>>>>>>>>>\n"); |
6708bb27 | 329 | pr_debug("Initialized struct target_fabric_configfs: %p for" |
c66ac9db NB |
330 | " %s\n", tf, tf->tf_name); |
331 | return tf; | |
332 | } | |
333 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
334 | ||
335 | /* | |
336 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
337 | */ | |
338 | void target_fabric_configfs_free( | |
339 | struct target_fabric_configfs *tf) | |
340 | { | |
341 | mutex_lock(&g_tf_lock); | |
342 | list_del(&tf->tf_list); | |
343 | mutex_unlock(&g_tf_lock); | |
344 | ||
345 | kfree(tf); | |
346 | } | |
347 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
348 | ||
349 | /* | |
350 | * Perform a sanity check of the passed tf->tf_ops before completing | |
351 | * TCM fabric module registration. | |
352 | */ | |
353 | static int target_fabric_tf_ops_check( | |
354 | struct target_fabric_configfs *tf) | |
355 | { | |
356 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
357 | ||
6708bb27 AG |
358 | if (!tfo->get_fabric_name) { |
359 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
360 | return -EINVAL; |
361 | } | |
6708bb27 AG |
362 | if (!tfo->get_fabric_proto_ident) { |
363 | pr_err("Missing tfo->get_fabric_proto_ident()\n"); | |
c66ac9db NB |
364 | return -EINVAL; |
365 | } | |
6708bb27 AG |
366 | if (!tfo->tpg_get_wwn) { |
367 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
368 | return -EINVAL; |
369 | } | |
6708bb27 AG |
370 | if (!tfo->tpg_get_tag) { |
371 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
372 | return -EINVAL; |
373 | } | |
6708bb27 AG |
374 | if (!tfo->tpg_get_default_depth) { |
375 | pr_err("Missing tfo->tpg_get_default_depth()\n"); | |
c66ac9db NB |
376 | return -EINVAL; |
377 | } | |
6708bb27 AG |
378 | if (!tfo->tpg_get_pr_transport_id) { |
379 | pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); | |
c66ac9db NB |
380 | return -EINVAL; |
381 | } | |
6708bb27 AG |
382 | if (!tfo->tpg_get_pr_transport_id_len) { |
383 | pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
c66ac9db NB |
384 | return -EINVAL; |
385 | } | |
6708bb27 AG |
386 | if (!tfo->tpg_check_demo_mode) { |
387 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
388 | return -EINVAL; |
389 | } | |
6708bb27 AG |
390 | if (!tfo->tpg_check_demo_mode_cache) { |
391 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
392 | return -EINVAL; |
393 | } | |
6708bb27 AG |
394 | if (!tfo->tpg_check_demo_mode_write_protect) { |
395 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
396 | return -EINVAL; |
397 | } | |
6708bb27 AG |
398 | if (!tfo->tpg_check_prod_mode_write_protect) { |
399 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
400 | return -EINVAL; |
401 | } | |
6708bb27 AG |
402 | if (!tfo->tpg_alloc_fabric_acl) { |
403 | pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); | |
c66ac9db NB |
404 | return -EINVAL; |
405 | } | |
6708bb27 AG |
406 | if (!tfo->tpg_release_fabric_acl) { |
407 | pr_err("Missing tfo->tpg_release_fabric_acl()\n"); | |
c66ac9db NB |
408 | return -EINVAL; |
409 | } | |
6708bb27 AG |
410 | if (!tfo->tpg_get_inst_index) { |
411 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
412 | return -EINVAL; |
413 | } | |
35462975 | 414 | if (!tfo->release_cmd) { |
6708bb27 | 415 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
416 | return -EINVAL; |
417 | } | |
6708bb27 AG |
418 | if (!tfo->shutdown_session) { |
419 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
420 | return -EINVAL; |
421 | } | |
6708bb27 AG |
422 | if (!tfo->close_session) { |
423 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
424 | return -EINVAL; |
425 | } | |
6708bb27 AG |
426 | if (!tfo->stop_session) { |
427 | pr_err("Missing tfo->stop_session()\n"); | |
c66ac9db NB |
428 | return -EINVAL; |
429 | } | |
6708bb27 AG |
430 | if (!tfo->fall_back_to_erl0) { |
431 | pr_err("Missing tfo->fall_back_to_erl0()\n"); | |
c66ac9db NB |
432 | return -EINVAL; |
433 | } | |
6708bb27 AG |
434 | if (!tfo->sess_logged_in) { |
435 | pr_err("Missing tfo->sess_logged_in()\n"); | |
c66ac9db NB |
436 | return -EINVAL; |
437 | } | |
6708bb27 AG |
438 | if (!tfo->sess_get_index) { |
439 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
440 | return -EINVAL; |
441 | } | |
6708bb27 AG |
442 | if (!tfo->write_pending) { |
443 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
444 | return -EINVAL; |
445 | } | |
6708bb27 AG |
446 | if (!tfo->write_pending_status) { |
447 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
448 | return -EINVAL; |
449 | } | |
6708bb27 AG |
450 | if (!tfo->set_default_node_attributes) { |
451 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
452 | return -EINVAL; |
453 | } | |
6708bb27 AG |
454 | if (!tfo->get_task_tag) { |
455 | pr_err("Missing tfo->get_task_tag()\n"); | |
c66ac9db NB |
456 | return -EINVAL; |
457 | } | |
6708bb27 AG |
458 | if (!tfo->get_cmd_state) { |
459 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
460 | return -EINVAL; |
461 | } | |
6708bb27 AG |
462 | if (!tfo->queue_data_in) { |
463 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
464 | return -EINVAL; |
465 | } | |
6708bb27 AG |
466 | if (!tfo->queue_status) { |
467 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
468 | return -EINVAL; |
469 | } | |
6708bb27 AG |
470 | if (!tfo->queue_tm_rsp) { |
471 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
472 | return -EINVAL; |
473 | } | |
6708bb27 AG |
474 | if (!tfo->set_fabric_sense_len) { |
475 | pr_err("Missing tfo->set_fabric_sense_len()\n"); | |
c66ac9db NB |
476 | return -EINVAL; |
477 | } | |
6708bb27 AG |
478 | if (!tfo->get_fabric_sense_len) { |
479 | pr_err("Missing tfo->get_fabric_sense_len()\n"); | |
c66ac9db NB |
480 | return -EINVAL; |
481 | } | |
6708bb27 AG |
482 | if (!tfo->is_state_remove) { |
483 | pr_err("Missing tfo->is_state_remove()\n"); | |
c66ac9db NB |
484 | return -EINVAL; |
485 | } | |
c66ac9db NB |
486 | /* |
487 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
488 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
489 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
490 | */ | |
6708bb27 AG |
491 | if (!tfo->fabric_make_wwn) { |
492 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
493 | return -EINVAL; |
494 | } | |
6708bb27 AG |
495 | if (!tfo->fabric_drop_wwn) { |
496 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
497 | return -EINVAL; |
498 | } | |
6708bb27 AG |
499 | if (!tfo->fabric_make_tpg) { |
500 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
501 | return -EINVAL; |
502 | } | |
6708bb27 AG |
503 | if (!tfo->fabric_drop_tpg) { |
504 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
505 | return -EINVAL; |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Called 2nd from fabric module with returned parameter of | |
513 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
514 | * | |
515 | * Upon a successful registration, the new fabric's struct config_item is | |
516 | * return. Also, a pointer to this struct is set in the passed | |
517 | * struct target_fabric_configfs. | |
518 | */ | |
519 | int target_fabric_configfs_register( | |
520 | struct target_fabric_configfs *tf) | |
521 | { | |
c66ac9db NB |
522 | int ret; |
523 | ||
6708bb27 AG |
524 | if (!tf) { |
525 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
526 | " pointer\n"); |
527 | return -EINVAL; | |
528 | } | |
6708bb27 AG |
529 | if (!tf->tf_subsys) { |
530 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
531 | " pointer\n"); |
532 | return -EINVAL; | |
533 | } | |
c66ac9db NB |
534 | ret = target_fabric_tf_ops_check(tf); |
535 | if (ret < 0) | |
536 | return ret; | |
537 | ||
6708bb27 | 538 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
539 | ">>>>>>>>>>\n"); |
540 | return 0; | |
541 | } | |
542 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
543 | ||
544 | void target_fabric_configfs_deregister( | |
545 | struct target_fabric_configfs *tf) | |
546 | { | |
c66ac9db NB |
547 | struct configfs_subsystem *su; |
548 | ||
6708bb27 AG |
549 | if (!tf) { |
550 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
551 | "configfs\n"); |
552 | return; | |
553 | } | |
554 | su = tf->tf_subsys; | |
6708bb27 AG |
555 | if (!su) { |
556 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
557 | " pointer\n"); |
558 | return; | |
559 | } | |
6708bb27 | 560 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
561 | ">>>>>>>>>>>>\n"); |
562 | mutex_lock(&g_tf_lock); | |
563 | if (atomic_read(&tf->tf_access_cnt)) { | |
564 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 565 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
566 | tf->tf_name); |
567 | BUG(); | |
568 | } | |
569 | list_del(&tf->tf_list); | |
570 | mutex_unlock(&g_tf_lock); | |
571 | ||
6708bb27 | 572 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
573 | " %s\n", tf->tf_name); |
574 | tf->tf_module = NULL; | |
575 | tf->tf_subsys = NULL; | |
576 | kfree(tf); | |
577 | ||
6708bb27 | 578 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 579 | ">>>>>\n"); |
c66ac9db NB |
580 | } |
581 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
582 | ||
583 | /*############################################################################## | |
584 | // Stop functions called by external Target Fabrics Modules | |
585 | //############################################################################*/ | |
586 | ||
587 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
588 | ||
589 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
590 | static ssize_t target_core_dev_show_attr_##_name( \ | |
591 | struct se_dev_attrib *da, \ | |
592 | char *page) \ | |
593 | { \ | |
594 | struct se_device *dev; \ | |
595 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
596 | ssize_t rb; \ | |
597 | \ | |
598 | spin_lock(&se_dev->se_dev_lock); \ | |
599 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 600 | if (!dev) { \ |
c66ac9db NB |
601 | spin_unlock(&se_dev->se_dev_lock); \ |
602 | return -ENODEV; \ | |
603 | } \ | |
e3d6f909 AG |
604 | rb = snprintf(page, PAGE_SIZE, "%u\n", \ |
605 | (u32)dev->se_sub_dev->se_dev_attrib._name); \ | |
c66ac9db NB |
606 | spin_unlock(&se_dev->se_dev_lock); \ |
607 | \ | |
608 | return rb; \ | |
609 | } | |
610 | ||
611 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
612 | static ssize_t target_core_dev_store_attr_##_name( \ | |
613 | struct se_dev_attrib *da, \ | |
614 | const char *page, \ | |
615 | size_t count) \ | |
616 | { \ | |
617 | struct se_device *dev; \ | |
618 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
619 | unsigned long val; \ | |
620 | int ret; \ | |
621 | \ | |
622 | spin_lock(&se_dev->se_dev_lock); \ | |
623 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 624 | if (!dev) { \ |
c66ac9db NB |
625 | spin_unlock(&se_dev->se_dev_lock); \ |
626 | return -ENODEV; \ | |
627 | } \ | |
628 | ret = strict_strtoul(page, 0, &val); \ | |
629 | if (ret < 0) { \ | |
630 | spin_unlock(&se_dev->se_dev_lock); \ | |
6708bb27 | 631 | pr_err("strict_strtoul() failed with" \ |
c66ac9db NB |
632 | " ret: %d\n", ret); \ |
633 | return -EINVAL; \ | |
634 | } \ | |
635 | ret = se_dev_set_##_name(dev, (u32)val); \ | |
636 | spin_unlock(&se_dev->se_dev_lock); \ | |
637 | \ | |
638 | return (!ret) ? count : -EINVAL; \ | |
639 | } | |
640 | ||
641 | #define DEF_DEV_ATTRIB(_name) \ | |
642 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
643 | DEF_DEV_ATTRIB_STORE(_name); | |
644 | ||
645 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
646 | DEF_DEV_ATTRIB_SHOW(_name); | |
647 | ||
648 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
649 | #define SE_DEV_ATTR(_name, _mode) \ | |
650 | static struct target_core_dev_attrib_attribute \ | |
651 | target_core_dev_attrib_##_name = \ | |
652 | __CONFIGFS_EATTR(_name, _mode, \ | |
653 | target_core_dev_show_attr_##_name, \ | |
654 | target_core_dev_store_attr_##_name); | |
655 | ||
656 | #define SE_DEV_ATTR_RO(_name); \ | |
657 | static struct target_core_dev_attrib_attribute \ | |
658 | target_core_dev_attrib_##_name = \ | |
659 | __CONFIGFS_EATTR_RO(_name, \ | |
660 | target_core_dev_show_attr_##_name); | |
661 | ||
662 | DEF_DEV_ATTRIB(emulate_dpo); | |
663 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
664 | ||
665 | DEF_DEV_ATTRIB(emulate_fua_write); | |
666 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
667 | ||
668 | DEF_DEV_ATTRIB(emulate_fua_read); | |
669 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
670 | ||
671 | DEF_DEV_ATTRIB(emulate_write_cache); | |
672 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
673 | ||
674 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
675 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
676 | ||
677 | DEF_DEV_ATTRIB(emulate_tas); | |
678 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
679 | ||
680 | DEF_DEV_ATTRIB(emulate_tpu); | |
681 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
682 | ||
683 | DEF_DEV_ATTRIB(emulate_tpws); | |
684 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
685 | ||
686 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
687 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
688 | ||
e22a7f07 RD |
689 | DEF_DEV_ATTRIB(is_nonrot); |
690 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); | |
691 | ||
5de619a3 NB |
692 | DEF_DEV_ATTRIB(emulate_rest_reord); |
693 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); | |
694 | ||
c66ac9db NB |
695 | DEF_DEV_ATTRIB_RO(hw_block_size); |
696 | SE_DEV_ATTR_RO(hw_block_size); | |
697 | ||
698 | DEF_DEV_ATTRIB(block_size); | |
699 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
700 | ||
701 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
702 | SE_DEV_ATTR_RO(hw_max_sectors); | |
703 | ||
704 | DEF_DEV_ATTRIB(max_sectors); | |
705 | SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); | |
706 | ||
707 | DEF_DEV_ATTRIB(optimal_sectors); | |
708 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
709 | ||
710 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
711 | SE_DEV_ATTR_RO(hw_queue_depth); | |
712 | ||
713 | DEF_DEV_ATTRIB(queue_depth); | |
714 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
715 | ||
c66ac9db NB |
716 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
717 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
718 | ||
719 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
720 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
721 | ||
722 | DEF_DEV_ATTRIB(unmap_granularity); | |
723 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
724 | ||
725 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
726 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
727 | ||
728 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
729 | ||
730 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
731 | &target_core_dev_attrib_emulate_dpo.attr, | |
732 | &target_core_dev_attrib_emulate_fua_write.attr, | |
733 | &target_core_dev_attrib_emulate_fua_read.attr, | |
734 | &target_core_dev_attrib_emulate_write_cache.attr, | |
735 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
736 | &target_core_dev_attrib_emulate_tas.attr, | |
737 | &target_core_dev_attrib_emulate_tpu.attr, | |
738 | &target_core_dev_attrib_emulate_tpws.attr, | |
739 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
e22a7f07 | 740 | &target_core_dev_attrib_is_nonrot.attr, |
5de619a3 | 741 | &target_core_dev_attrib_emulate_rest_reord.attr, |
c66ac9db NB |
742 | &target_core_dev_attrib_hw_block_size.attr, |
743 | &target_core_dev_attrib_block_size.attr, | |
744 | &target_core_dev_attrib_hw_max_sectors.attr, | |
745 | &target_core_dev_attrib_max_sectors.attr, | |
746 | &target_core_dev_attrib_optimal_sectors.attr, | |
747 | &target_core_dev_attrib_hw_queue_depth.attr, | |
748 | &target_core_dev_attrib_queue_depth.attr, | |
c66ac9db NB |
749 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
750 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
751 | &target_core_dev_attrib_unmap_granularity.attr, | |
752 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
753 | NULL, | |
754 | }; | |
755 | ||
756 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
757 | .show_attribute = target_core_dev_attrib_attr_show, | |
758 | .store_attribute = target_core_dev_attrib_attr_store, | |
759 | }; | |
760 | ||
761 | static struct config_item_type target_core_dev_attrib_cit = { | |
762 | .ct_item_ops = &target_core_dev_attrib_ops, | |
763 | .ct_attrs = target_core_dev_attrib_attrs, | |
764 | .ct_owner = THIS_MODULE, | |
765 | }; | |
766 | ||
767 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
768 | ||
769 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
770 | ||
771 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
772 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
773 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
774 | __CONFIGFS_EATTR(_name, _mode, \ | |
775 | target_core_dev_wwn_show_attr_##_name, \ | |
776 | target_core_dev_wwn_store_attr_##_name); | |
777 | ||
778 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
779 | do { \ | |
780 | static struct target_core_dev_wwn_attribute \ | |
781 | target_core_dev_wwn_##_name = \ | |
782 | __CONFIGFS_EATTR_RO(_name, \ | |
783 | target_core_dev_wwn_show_attr_##_name); \ | |
784 | } while (0); | |
785 | ||
786 | /* | |
787 | * VPD page 0x80 Unit serial | |
788 | */ | |
789 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
790 | struct t10_wwn *t10_wwn, | |
791 | char *page) | |
792 | { | |
793 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
794 | struct se_device *dev; | |
795 | ||
796 | dev = se_dev->se_dev_ptr; | |
6708bb27 | 797 | if (!dev) |
c66ac9db NB |
798 | return -ENODEV; |
799 | ||
800 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", | |
801 | &t10_wwn->unit_serial[0]); | |
802 | } | |
803 | ||
804 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
805 | struct t10_wwn *t10_wwn, | |
806 | const char *page, | |
807 | size_t count) | |
808 | { | |
809 | struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; | |
810 | struct se_device *dev; | |
811 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; | |
812 | ||
813 | /* | |
814 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
815 | * from the struct scsi_device level firmware, do not allow | |
816 | * VPD Unit Serial to be emulated. | |
817 | * | |
818 | * Note this struct scsi_device could also be emulating VPD | |
819 | * information from its drivers/scsi LLD. But for now we assume | |
820 | * it is doing 'the right thing' wrt a world wide unique | |
821 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
822 | */ | |
823 | if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { | |
6708bb27 | 824 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
825 | " Unit Serial, ignoring request\n"); |
826 | return -EOPNOTSUPP; | |
827 | } | |
828 | ||
60d645a4 | 829 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 830 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
831 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
832 | return -EOVERFLOW; | |
833 | } | |
834 | /* | |
835 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
836 | * do exist, fail here as changing this information on the fly | |
837 | * (underneath the initiator side OS dependent multipath code) | |
838 | * could cause negative effects. | |
839 | */ | |
840 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 841 | if (dev) { |
c66ac9db | 842 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
6708bb27 | 843 | pr_err("Unable to set VPD Unit Serial while" |
c66ac9db NB |
844 | " active %d $FABRIC_MOD exports exist\n", |
845 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
846 | return -EINVAL; | |
847 | } | |
848 | } | |
849 | /* | |
850 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
851 | * | |
852 | * Also, strip any newline added from the userspace | |
853 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
854 | */ | |
855 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
856 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
857 | snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, | |
858 | "%s", strstrip(buf)); | |
859 | su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; | |
860 | ||
6708bb27 | 861 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
c66ac9db NB |
862 | " %s\n", su_dev->t10_wwn.unit_serial); |
863 | ||
864 | return count; | |
865 | } | |
866 | ||
867 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
868 | ||
869 | /* | |
870 | * VPD page 0x83 Protocol Identifier | |
871 | */ | |
872 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
873 | struct t10_wwn *t10_wwn, | |
874 | char *page) | |
875 | { | |
876 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
877 | struct se_device *dev; | |
878 | struct t10_vpd *vpd; | |
879 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
880 | ssize_t len = 0; | |
881 | ||
882 | dev = se_dev->se_dev_ptr; | |
6708bb27 | 883 | if (!dev) |
c66ac9db NB |
884 | return -ENODEV; |
885 | ||
886 | memset(buf, 0, VPD_TMP_BUF_SIZE); | |
887 | ||
888 | spin_lock(&t10_wwn->t10_vpd_lock); | |
889 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 890 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
891 | continue; |
892 | ||
893 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
894 | ||
6708bb27 | 895 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
896 | break; |
897 | ||
898 | len += sprintf(page+len, "%s", buf); | |
899 | } | |
900 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
901 | ||
902 | return len; | |
903 | } | |
904 | ||
905 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
906 | struct t10_wwn *t10_wwn, | |
907 | const char *page, | |
908 | size_t count) | |
909 | { | |
910 | return -ENOSYS; | |
911 | } | |
912 | ||
913 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
914 | ||
915 | /* | |
916 | * Generic wrapper for dumping VPD identifiers by association. | |
917 | */ | |
918 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
919 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
920 | struct t10_wwn *t10_wwn, \ | |
921 | char *page) \ | |
922 | { \ | |
923 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ | |
924 | struct se_device *dev; \ | |
925 | struct t10_vpd *vpd; \ | |
926 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
927 | ssize_t len = 0; \ | |
928 | \ | |
929 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 930 | if (!dev) \ |
c66ac9db NB |
931 | return -ENODEV; \ |
932 | \ | |
933 | spin_lock(&t10_wwn->t10_vpd_lock); \ | |
934 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
935 | if (vpd->association != _assoc) \ | |
936 | continue; \ | |
937 | \ | |
938 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
939 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 940 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
941 | break; \ |
942 | len += sprintf(page+len, "%s", buf); \ | |
943 | \ | |
944 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
945 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 946 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
947 | break; \ |
948 | len += sprintf(page+len, "%s", buf); \ | |
949 | \ | |
950 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
951 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 952 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
953 | break; \ |
954 | len += sprintf(page+len, "%s", buf); \ | |
955 | } \ | |
956 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
957 | \ | |
958 | return len; \ | |
959 | } | |
960 | ||
961 | /* | |
163cd5fa | 962 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
963 | */ |
964 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
965 | ||
966 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
967 | struct t10_wwn *t10_wwn, | |
968 | const char *page, | |
969 | size_t count) | |
970 | { | |
971 | return -ENOSYS; | |
972 | } | |
973 | ||
974 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
975 | ||
976 | /* | |
977 | * VPD page 0x83 Association: Target Port | |
978 | */ | |
979 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
980 | ||
981 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
982 | struct t10_wwn *t10_wwn, | |
983 | const char *page, | |
984 | size_t count) | |
985 | { | |
986 | return -ENOSYS; | |
987 | } | |
988 | ||
989 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
990 | ||
991 | /* | |
992 | * VPD page 0x83 Association: SCSI Target Device | |
993 | */ | |
994 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
995 | ||
996 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
997 | struct t10_wwn *t10_wwn, | |
998 | const char *page, | |
999 | size_t count) | |
1000 | { | |
1001 | return -ENOSYS; | |
1002 | } | |
1003 | ||
1004 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
1005 | ||
1006 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
1007 | ||
1008 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
1009 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
1010 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
1011 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
1012 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
1013 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1014 | NULL, | |
1015 | }; | |
1016 | ||
1017 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1018 | .show_attribute = target_core_dev_wwn_attr_show, | |
1019 | .store_attribute = target_core_dev_wwn_attr_store, | |
1020 | }; | |
1021 | ||
1022 | static struct config_item_type target_core_dev_wwn_cit = { | |
1023 | .ct_item_ops = &target_core_dev_wwn_ops, | |
1024 | .ct_attrs = target_core_dev_wwn_attrs, | |
1025 | .ct_owner = THIS_MODULE, | |
1026 | }; | |
1027 | ||
1028 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
1029 | ||
1030 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
1031 | ||
1032 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); | |
1033 | #define SE_DEV_PR_ATTR(_name, _mode) \ | |
1034 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1035 | __CONFIGFS_EATTR(_name, _mode, \ | |
1036 | target_core_dev_pr_show_attr_##_name, \ | |
1037 | target_core_dev_pr_store_attr_##_name); | |
1038 | ||
1039 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1040 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1041 | __CONFIGFS_EATTR_RO(_name, \ | |
1042 | target_core_dev_pr_show_attr_##_name); | |
1043 | ||
1044 | /* | |
1045 | * res_holder | |
1046 | */ | |
1047 | static ssize_t target_core_dev_pr_show_spc3_res( | |
1048 | struct se_device *dev, | |
1049 | char *page, | |
1050 | ssize_t *len) | |
1051 | { | |
1052 | struct se_node_acl *se_nacl; | |
1053 | struct t10_pr_registration *pr_reg; | |
1054 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1055 | int prf_isid; | |
1056 | ||
1057 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1058 | ||
1059 | spin_lock(&dev->dev_reservation_lock); | |
1060 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1061 | if (!pr_reg) { |
c66ac9db NB |
1062 | *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); |
1063 | spin_unlock(&dev->dev_reservation_lock); | |
1064 | return *len; | |
1065 | } | |
1066 | se_nacl = pr_reg->pr_reg_nacl; | |
1067 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1068 | PR_REG_ISID_ID_LEN); | |
1069 | ||
1070 | *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", | |
e3d6f909 | 1071 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1072 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); |
1073 | spin_unlock(&dev->dev_reservation_lock); | |
1074 | ||
1075 | return *len; | |
1076 | } | |
1077 | ||
1078 | static ssize_t target_core_dev_pr_show_spc2_res( | |
1079 | struct se_device *dev, | |
1080 | char *page, | |
1081 | ssize_t *len) | |
1082 | { | |
1083 | struct se_node_acl *se_nacl; | |
1084 | ||
1085 | spin_lock(&dev->dev_reservation_lock); | |
1086 | se_nacl = dev->dev_reserved_node_acl; | |
6708bb27 | 1087 | if (!se_nacl) { |
c66ac9db NB |
1088 | *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); |
1089 | spin_unlock(&dev->dev_reservation_lock); | |
1090 | return *len; | |
1091 | } | |
1092 | *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", | |
e3d6f909 | 1093 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1094 | se_nacl->initiatorname); |
1095 | spin_unlock(&dev->dev_reservation_lock); | |
1096 | ||
1097 | return *len; | |
1098 | } | |
1099 | ||
1100 | static ssize_t target_core_dev_pr_show_attr_res_holder( | |
1101 | struct se_subsystem_dev *su_dev, | |
1102 | char *page) | |
1103 | { | |
1104 | ssize_t len = 0; | |
1105 | ||
6708bb27 | 1106 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1107 | return -ENODEV; |
1108 | ||
e3d6f909 | 1109 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1110 | case SPC3_PERSISTENT_RESERVATIONS: |
1111 | target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, | |
1112 | page, &len); | |
1113 | break; | |
1114 | case SPC2_RESERVATIONS: | |
1115 | target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, | |
1116 | page, &len); | |
1117 | break; | |
1118 | case SPC_PASSTHROUGH: | |
1119 | len += sprintf(page+len, "Passthrough\n"); | |
1120 | break; | |
1121 | default: | |
1122 | len += sprintf(page+len, "Unknown\n"); | |
1123 | break; | |
1124 | } | |
1125 | ||
1126 | return len; | |
1127 | } | |
1128 | ||
1129 | SE_DEV_PR_ATTR_RO(res_holder); | |
1130 | ||
1131 | /* | |
1132 | * res_pr_all_tgt_pts | |
1133 | */ | |
1134 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( | |
1135 | struct se_subsystem_dev *su_dev, | |
1136 | char *page) | |
1137 | { | |
1138 | struct se_device *dev; | |
1139 | struct t10_pr_registration *pr_reg; | |
1140 | ssize_t len = 0; | |
1141 | ||
1142 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1143 | if (!dev) |
c66ac9db NB |
1144 | return -ENODEV; |
1145 | ||
e3d6f909 | 1146 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1147 | return len; |
1148 | ||
1149 | spin_lock(&dev->dev_reservation_lock); | |
1150 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1151 | if (!pr_reg) { |
c66ac9db NB |
1152 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1153 | spin_unlock(&dev->dev_reservation_lock); | |
1154 | return len; | |
1155 | } | |
1156 | /* | |
1157 | * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 | |
1158 | * Basic PERSISTENT RESERVER OUT parameter list, page 290 | |
1159 | */ | |
1160 | if (pr_reg->pr_reg_all_tg_pt) | |
1161 | len = sprintf(page, "SPC-3 Reservation: All Target" | |
1162 | " Ports registration\n"); | |
1163 | else | |
1164 | len = sprintf(page, "SPC-3 Reservation: Single" | |
1165 | " Target Port registration\n"); | |
1166 | spin_unlock(&dev->dev_reservation_lock); | |
1167 | ||
1168 | return len; | |
1169 | } | |
1170 | ||
1171 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1172 | ||
1173 | /* | |
1174 | * res_pr_generation | |
1175 | */ | |
1176 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( | |
1177 | struct se_subsystem_dev *su_dev, | |
1178 | char *page) | |
1179 | { | |
6708bb27 | 1180 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1181 | return -ENODEV; |
1182 | ||
e3d6f909 | 1183 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1184 | return 0; |
1185 | ||
e3d6f909 | 1186 | return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation); |
c66ac9db NB |
1187 | } |
1188 | ||
1189 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1190 | ||
1191 | /* | |
1192 | * res_pr_holder_tg_port | |
1193 | */ | |
1194 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
1195 | struct se_subsystem_dev *su_dev, | |
1196 | char *page) | |
1197 | { | |
1198 | struct se_device *dev; | |
1199 | struct se_node_acl *se_nacl; | |
1200 | struct se_lun *lun; | |
1201 | struct se_portal_group *se_tpg; | |
1202 | struct t10_pr_registration *pr_reg; | |
1203 | struct target_core_fabric_ops *tfo; | |
1204 | ssize_t len = 0; | |
1205 | ||
1206 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1207 | if (!dev) |
c66ac9db NB |
1208 | return -ENODEV; |
1209 | ||
e3d6f909 | 1210 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1211 | return len; |
1212 | ||
1213 | spin_lock(&dev->dev_reservation_lock); | |
1214 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1215 | if (!pr_reg) { |
c66ac9db NB |
1216 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1217 | spin_unlock(&dev->dev_reservation_lock); | |
1218 | return len; | |
1219 | } | |
1220 | se_nacl = pr_reg->pr_reg_nacl; | |
1221 | se_tpg = se_nacl->se_tpg; | |
1222 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1223 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1224 | |
1225 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1226 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1227 | tfo->tpg_get_wwn(se_tpg)); | |
1228 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
1229 | " Identifer Tag: %hu %s Portal Group Tag: %hu" | |
1230 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, | |
1231 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1232 | tfo->get_fabric_name(), lun->unpacked_lun); | |
1233 | spin_unlock(&dev->dev_reservation_lock); | |
1234 | ||
1235 | return len; | |
1236 | } | |
1237 | ||
1238 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1239 | ||
1240 | /* | |
1241 | * res_pr_registered_i_pts | |
1242 | */ | |
1243 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( | |
1244 | struct se_subsystem_dev *su_dev, | |
1245 | char *page) | |
1246 | { | |
1247 | struct target_core_fabric_ops *tfo; | |
1248 | struct t10_pr_registration *pr_reg; | |
1249 | unsigned char buf[384]; | |
1250 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1251 | ssize_t len = 0; | |
1252 | int reg_count = 0, prf_isid; | |
1253 | ||
6708bb27 | 1254 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1255 | return -ENODEV; |
1256 | ||
e3d6f909 | 1257 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1258 | return len; |
1259 | ||
1260 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); | |
1261 | ||
e3d6f909 AG |
1262 | spin_lock(&su_dev->t10_pr.registration_lock); |
1263 | list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, | |
c66ac9db NB |
1264 | pr_reg_list) { |
1265 | ||
1266 | memset(buf, 0, 384); | |
1267 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1268 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1269 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1270 | PR_REG_ISID_ID_LEN); | |
1271 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1272 | tfo->get_fabric_name(), | |
1273 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1274 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1275 | pr_reg->pr_res_generation); | |
1276 | ||
6708bb27 | 1277 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1278 | break; |
1279 | ||
1280 | len += sprintf(page+len, "%s", buf); | |
1281 | reg_count++; | |
1282 | } | |
e3d6f909 | 1283 | spin_unlock(&su_dev->t10_pr.registration_lock); |
c66ac9db | 1284 | |
6708bb27 | 1285 | if (!reg_count) |
c66ac9db NB |
1286 | len += sprintf(page+len, "None\n"); |
1287 | ||
1288 | return len; | |
1289 | } | |
1290 | ||
1291 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1292 | ||
1293 | /* | |
1294 | * res_pr_type | |
1295 | */ | |
1296 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( | |
1297 | struct se_subsystem_dev *su_dev, | |
1298 | char *page) | |
1299 | { | |
1300 | struct se_device *dev; | |
1301 | struct t10_pr_registration *pr_reg; | |
1302 | ssize_t len = 0; | |
1303 | ||
1304 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1305 | if (!dev) |
c66ac9db NB |
1306 | return -ENODEV; |
1307 | ||
e3d6f909 | 1308 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1309 | return len; |
1310 | ||
1311 | spin_lock(&dev->dev_reservation_lock); | |
1312 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1313 | if (!pr_reg) { |
c66ac9db NB |
1314 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1315 | spin_unlock(&dev->dev_reservation_lock); | |
1316 | return len; | |
1317 | } | |
1318 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1319 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1320 | spin_unlock(&dev->dev_reservation_lock); | |
1321 | ||
1322 | return len; | |
1323 | } | |
1324 | ||
1325 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1326 | ||
1327 | /* | |
1328 | * res_type | |
1329 | */ | |
1330 | static ssize_t target_core_dev_pr_show_attr_res_type( | |
1331 | struct se_subsystem_dev *su_dev, | |
1332 | char *page) | |
1333 | { | |
1334 | ssize_t len = 0; | |
1335 | ||
6708bb27 | 1336 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1337 | return -ENODEV; |
1338 | ||
e3d6f909 | 1339 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1340 | case SPC3_PERSISTENT_RESERVATIONS: |
1341 | len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
1342 | break; | |
1343 | case SPC2_RESERVATIONS: | |
1344 | len = sprintf(page, "SPC2_RESERVATIONS\n"); | |
1345 | break; | |
1346 | case SPC_PASSTHROUGH: | |
1347 | len = sprintf(page, "SPC_PASSTHROUGH\n"); | |
1348 | break; | |
1349 | default: | |
1350 | len = sprintf(page, "UNKNOWN\n"); | |
1351 | break; | |
1352 | } | |
1353 | ||
1354 | return len; | |
1355 | } | |
1356 | ||
1357 | SE_DEV_PR_ATTR_RO(res_type); | |
1358 | ||
1359 | /* | |
1360 | * res_aptpl_active | |
1361 | */ | |
1362 | ||
1363 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( | |
1364 | struct se_subsystem_dev *su_dev, | |
1365 | char *page) | |
1366 | { | |
6708bb27 | 1367 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1368 | return -ENODEV; |
1369 | ||
e3d6f909 | 1370 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1371 | return 0; |
1372 | ||
1373 | return sprintf(page, "APTPL Bit Status: %s\n", | |
e3d6f909 | 1374 | (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1375 | } |
1376 | ||
1377 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1378 | ||
1379 | /* | |
1380 | * res_aptpl_metadata | |
1381 | */ | |
1382 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
1383 | struct se_subsystem_dev *su_dev, | |
1384 | char *page) | |
1385 | { | |
6708bb27 | 1386 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1387 | return -ENODEV; |
1388 | ||
e3d6f909 | 1389 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1390 | return 0; |
1391 | ||
1392 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1393 | } | |
1394 | ||
1395 | enum { | |
1396 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1397 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1398 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1399 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1400 | }; | |
1401 | ||
1402 | static match_table_t tokens = { | |
1403 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1404 | {Opt_initiator_node, "initiator_node=%s"}, | |
1405 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1406 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1407 | {Opt_res_holder, "res_holder=%d"}, | |
1408 | {Opt_res_type, "res_type=%d"}, | |
1409 | {Opt_res_scope, "res_scope=%d"}, | |
1410 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1411 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1412 | {Opt_target_fabric, "target_fabric=%s"}, | |
1413 | {Opt_target_node, "target_node=%s"}, | |
1414 | {Opt_tpgt, "tpgt=%d"}, | |
1415 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1416 | {Opt_target_lun, "target_lun=%d"}, | |
1417 | {Opt_err, NULL} | |
1418 | }; | |
1419 | ||
1420 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
1421 | struct se_subsystem_dev *su_dev, | |
1422 | const char *page, | |
1423 | size_t count) | |
1424 | { | |
1425 | struct se_device *dev; | |
6d180253 JJ |
1426 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1427 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1428 | char *orig, *ptr, *arg_p, *opts; |
1429 | substring_t args[MAX_OPT_ARGS]; | |
1430 | unsigned long long tmp_ll; | |
1431 | u64 sa_res_key = 0; | |
1432 | u32 mapped_lun = 0, target_lun = 0; | |
1433 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1434 | u16 port_rpti = 0, tpgt = 0; | |
1435 | u8 type = 0, scope; | |
1436 | ||
1437 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1438 | if (!dev) |
c66ac9db NB |
1439 | return -ENODEV; |
1440 | ||
e3d6f909 | 1441 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1442 | return 0; |
1443 | ||
1444 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1445 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1446 | " active fabric exports exist\n"); |
1447 | return -EINVAL; | |
1448 | } | |
1449 | ||
1450 | opts = kstrdup(page, GFP_KERNEL); | |
1451 | if (!opts) | |
1452 | return -ENOMEM; | |
1453 | ||
1454 | orig = opts; | |
1455 | while ((ptr = strsep(&opts, ",")) != NULL) { | |
1456 | if (!*ptr) | |
1457 | continue; | |
1458 | ||
1459 | token = match_token(ptr, tokens, args); | |
1460 | switch (token) { | |
1461 | case Opt_initiator_fabric: | |
1462 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1463 | if (!i_fabric) { |
1464 | ret = -ENOMEM; | |
1465 | goto out; | |
1466 | } | |
c66ac9db NB |
1467 | break; |
1468 | case Opt_initiator_node: | |
1469 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1470 | if (!i_port) { |
1471 | ret = -ENOMEM; | |
1472 | goto out; | |
1473 | } | |
60d645a4 | 1474 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1475 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1476 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1477 | PR_APTPL_MAX_IPORT_LEN); | |
1478 | ret = -EINVAL; | |
1479 | break; | |
1480 | } | |
1481 | break; | |
1482 | case Opt_initiator_sid: | |
1483 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1484 | if (!isid) { |
1485 | ret = -ENOMEM; | |
1486 | goto out; | |
1487 | } | |
60d645a4 | 1488 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1489 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1490 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1491 | PR_REG_ISID_LEN); | |
1492 | ret = -EINVAL; | |
1493 | break; | |
1494 | } | |
1495 | break; | |
1496 | case Opt_sa_res_key: | |
1497 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1498 | if (!arg_p) { |
1499 | ret = -ENOMEM; | |
1500 | goto out; | |
1501 | } | |
c66ac9db NB |
1502 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
1503 | if (ret < 0) { | |
6708bb27 | 1504 | pr_err("strict_strtoull() failed for" |
c66ac9db NB |
1505 | " sa_res_key=\n"); |
1506 | goto out; | |
1507 | } | |
1508 | sa_res_key = (u64)tmp_ll; | |
1509 | break; | |
1510 | /* | |
1511 | * PR APTPL Metadata for Reservation | |
1512 | */ | |
1513 | case Opt_res_holder: | |
1514 | match_int(args, &arg); | |
1515 | res_holder = arg; | |
1516 | break; | |
1517 | case Opt_res_type: | |
1518 | match_int(args, &arg); | |
1519 | type = (u8)arg; | |
1520 | break; | |
1521 | case Opt_res_scope: | |
1522 | match_int(args, &arg); | |
1523 | scope = (u8)arg; | |
1524 | break; | |
1525 | case Opt_res_all_tg_pt: | |
1526 | match_int(args, &arg); | |
1527 | all_tg_pt = (int)arg; | |
1528 | break; | |
1529 | case Opt_mapped_lun: | |
1530 | match_int(args, &arg); | |
1531 | mapped_lun = (u32)arg; | |
1532 | break; | |
1533 | /* | |
1534 | * PR APTPL Metadata for Target Port | |
1535 | */ | |
1536 | case Opt_target_fabric: | |
1537 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1538 | if (!t_fabric) { |
1539 | ret = -ENOMEM; | |
1540 | goto out; | |
1541 | } | |
c66ac9db NB |
1542 | break; |
1543 | case Opt_target_node: | |
1544 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1545 | if (!t_port) { |
1546 | ret = -ENOMEM; | |
1547 | goto out; | |
1548 | } | |
60d645a4 | 1549 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1550 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1551 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1552 | PR_APTPL_MAX_TPORT_LEN); | |
1553 | ret = -EINVAL; | |
1554 | break; | |
1555 | } | |
1556 | break; | |
1557 | case Opt_tpgt: | |
1558 | match_int(args, &arg); | |
1559 | tpgt = (u16)arg; | |
1560 | break; | |
1561 | case Opt_port_rtpi: | |
1562 | match_int(args, &arg); | |
1563 | port_rpti = (u16)arg; | |
1564 | break; | |
1565 | case Opt_target_lun: | |
1566 | match_int(args, &arg); | |
1567 | target_lun = (u32)arg; | |
1568 | break; | |
1569 | default: | |
1570 | break; | |
1571 | } | |
1572 | } | |
1573 | ||
6708bb27 AG |
1574 | if (!i_port || !t_port || !sa_res_key) { |
1575 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1576 | ret = -EINVAL; |
1577 | goto out; | |
1578 | } | |
1579 | ||
1580 | if (res_holder && !(type)) { | |
6708bb27 | 1581 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1582 | " holder\n", type); |
1583 | ret = -EINVAL; | |
1584 | goto out; | |
1585 | } | |
1586 | ||
e3d6f909 | 1587 | ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key, |
c66ac9db NB |
1588 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1589 | res_holder, all_tg_pt, type); | |
1590 | out: | |
6d180253 JJ |
1591 | kfree(i_fabric); |
1592 | kfree(i_port); | |
1593 | kfree(isid); | |
1594 | kfree(t_fabric); | |
1595 | kfree(t_port); | |
c66ac9db NB |
1596 | kfree(orig); |
1597 | return (ret == 0) ? count : ret; | |
1598 | } | |
1599 | ||
1600 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1601 | ||
1602 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); | |
1603 | ||
1604 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1605 | &target_core_dev_pr_res_holder.attr, | |
1606 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1607 | &target_core_dev_pr_res_pr_generation.attr, | |
1608 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1609 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1610 | &target_core_dev_pr_res_pr_type.attr, | |
1611 | &target_core_dev_pr_res_type.attr, | |
1612 | &target_core_dev_pr_res_aptpl_active.attr, | |
1613 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1614 | NULL, | |
1615 | }; | |
1616 | ||
1617 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1618 | .show_attribute = target_core_dev_pr_attr_show, | |
1619 | .store_attribute = target_core_dev_pr_attr_store, | |
1620 | }; | |
1621 | ||
1622 | static struct config_item_type target_core_dev_pr_cit = { | |
1623 | .ct_item_ops = &target_core_dev_pr_ops, | |
1624 | .ct_attrs = target_core_dev_pr_attrs, | |
1625 | .ct_owner = THIS_MODULE, | |
1626 | }; | |
1627 | ||
1628 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1629 | ||
1630 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1631 | ||
1632 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1633 | { | |
1634 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1635 | struct se_hba *hba = se_dev->se_dev_hba; | |
1636 | struct se_subsystem_api *t = hba->transport; | |
1637 | int bl = 0; | |
1638 | ssize_t read_bytes = 0; | |
1639 | ||
6708bb27 | 1640 | if (!se_dev->se_dev_ptr) |
c66ac9db NB |
1641 | return -ENODEV; |
1642 | ||
1643 | transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); | |
1644 | read_bytes += bl; | |
1645 | read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); | |
1646 | return read_bytes; | |
1647 | } | |
1648 | ||
1649 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1650 | .attr = { .ca_owner = THIS_MODULE, | |
1651 | .ca_name = "info", | |
1652 | .ca_mode = S_IRUGO }, | |
1653 | .show = target_core_show_dev_info, | |
1654 | .store = NULL, | |
1655 | }; | |
1656 | ||
1657 | static ssize_t target_core_store_dev_control( | |
1658 | void *p, | |
1659 | const char *page, | |
1660 | size_t count) | |
1661 | { | |
1662 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1663 | struct se_hba *hba = se_dev->se_dev_hba; | |
1664 | struct se_subsystem_api *t = hba->transport; | |
1665 | ||
6708bb27 AG |
1666 | if (!se_dev->se_dev_su_ptr) { |
1667 | pr_err("Unable to locate struct se_subsystem_dev>se" | |
c66ac9db NB |
1668 | "_dev_su_ptr\n"); |
1669 | return -EINVAL; | |
1670 | } | |
1671 | ||
1672 | return t->set_configfs_dev_params(hba, se_dev, page, count); | |
1673 | } | |
1674 | ||
1675 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1676 | .attr = { .ca_owner = THIS_MODULE, | |
1677 | .ca_name = "control", | |
1678 | .ca_mode = S_IWUSR }, | |
1679 | .show = NULL, | |
1680 | .store = target_core_store_dev_control, | |
1681 | }; | |
1682 | ||
1683 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1684 | { | |
1685 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1686 | ||
1687 | if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) | |
1688 | return 0; | |
1689 | ||
1690 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); | |
1691 | } | |
1692 | ||
1693 | static ssize_t target_core_store_dev_alias( | |
1694 | void *p, | |
1695 | const char *page, | |
1696 | size_t count) | |
1697 | { | |
1698 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1699 | struct se_hba *hba = se_dev->se_dev_hba; | |
1700 | ssize_t read_bytes; | |
1701 | ||
1702 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1703 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1704 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1705 | SE_DEV_ALIAS_LEN-1); | |
1706 | return -EINVAL; | |
1707 | } | |
1708 | ||
1709 | se_dev->su_dev_flags |= SDF_USING_ALIAS; | |
1710 | read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, | |
1711 | "%s", page); | |
1712 | ||
6708bb27 | 1713 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db NB |
1714 | config_item_name(&hba->hba_group.cg_item), |
1715 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1716 | se_dev->se_dev_alias); | |
1717 | ||
1718 | return read_bytes; | |
1719 | } | |
1720 | ||
1721 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1722 | .attr = { .ca_owner = THIS_MODULE, | |
1723 | .ca_name = "alias", | |
1724 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1725 | .show = target_core_show_dev_alias, | |
1726 | .store = target_core_store_dev_alias, | |
1727 | }; | |
1728 | ||
1729 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1730 | { | |
1731 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1732 | ||
1733 | if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) | |
1734 | return 0; | |
1735 | ||
1736 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); | |
1737 | } | |
1738 | ||
1739 | static ssize_t target_core_store_dev_udev_path( | |
1740 | void *p, | |
1741 | const char *page, | |
1742 | size_t count) | |
1743 | { | |
1744 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1745 | struct se_hba *hba = se_dev->se_dev_hba; | |
1746 | ssize_t read_bytes; | |
1747 | ||
1748 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1749 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1750 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1751 | SE_UDEV_PATH_LEN-1); | |
1752 | return -EINVAL; | |
1753 | } | |
1754 | ||
1755 | se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; | |
1756 | read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, | |
1757 | "%s", page); | |
1758 | ||
6708bb27 | 1759 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db NB |
1760 | config_item_name(&hba->hba_group.cg_item), |
1761 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1762 | se_dev->se_dev_udev_path); | |
1763 | ||
1764 | return read_bytes; | |
1765 | } | |
1766 | ||
1767 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1768 | .attr = { .ca_owner = THIS_MODULE, | |
1769 | .ca_name = "udev_path", | |
1770 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1771 | .show = target_core_show_dev_udev_path, | |
1772 | .store = target_core_store_dev_udev_path, | |
1773 | }; | |
1774 | ||
1775 | static ssize_t target_core_store_dev_enable( | |
1776 | void *p, | |
1777 | const char *page, | |
1778 | size_t count) | |
1779 | { | |
1780 | struct se_subsystem_dev *se_dev = (struct se_subsystem_dev *)p; | |
1781 | struct se_device *dev; | |
1782 | struct se_hba *hba = se_dev->se_dev_hba; | |
1783 | struct se_subsystem_api *t = hba->transport; | |
1784 | char *ptr; | |
1785 | ||
1786 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1787 | if (!ptr) { |
1788 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1789 | " is \"1\"\n"); |
1790 | return -EINVAL; | |
1791 | } | |
6708bb27 AG |
1792 | if (se_dev->se_dev_ptr) { |
1793 | pr_err("se_dev->se_dev_ptr already set for storage" | |
c66ac9db NB |
1794 | " object\n"); |
1795 | return -EEXIST; | |
1796 | } | |
1797 | ||
1798 | if (t->check_configfs_dev_params(hba, se_dev) < 0) | |
1799 | return -EINVAL; | |
1800 | ||
1801 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
613640e4 NB |
1802 | if (IS_ERR(dev)) |
1803 | return PTR_ERR(dev); | |
1804 | else if (!dev) | |
c66ac9db NB |
1805 | return -EINVAL; |
1806 | ||
1807 | se_dev->se_dev_ptr = dev; | |
6708bb27 | 1808 | pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" |
c66ac9db NB |
1809 | " %p\n", se_dev->se_dev_ptr); |
1810 | ||
1811 | return count; | |
1812 | } | |
1813 | ||
1814 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1815 | .attr = { .ca_owner = THIS_MODULE, | |
1816 | .ca_name = "enable", | |
1817 | .ca_mode = S_IWUSR }, | |
1818 | .show = NULL, | |
1819 | .store = target_core_store_dev_enable, | |
1820 | }; | |
1821 | ||
1822 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1823 | { | |
1824 | struct se_device *dev; | |
1825 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1826 | struct config_item *lu_ci; | |
1827 | struct t10_alua_lu_gp *lu_gp; | |
1828 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1829 | ssize_t len = 0; | |
1830 | ||
1831 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1832 | if (!dev) |
c66ac9db NB |
1833 | return -ENODEV; |
1834 | ||
e3d6f909 | 1835 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) |
c66ac9db NB |
1836 | return len; |
1837 | ||
1838 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 AG |
1839 | if (!lu_gp_mem) { |
1840 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" | |
c66ac9db NB |
1841 | " pointer\n"); |
1842 | return -EINVAL; | |
1843 | } | |
1844 | ||
1845 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1846 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1847 | if (lu_gp) { |
c66ac9db NB |
1848 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1849 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1850 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1851 | } | |
1852 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1853 | ||
1854 | return len; | |
1855 | } | |
1856 | ||
1857 | static ssize_t target_core_store_alua_lu_gp( | |
1858 | void *p, | |
1859 | const char *page, | |
1860 | size_t count) | |
1861 | { | |
1862 | struct se_device *dev; | |
1863 | struct se_subsystem_dev *su_dev = (struct se_subsystem_dev *)p; | |
1864 | struct se_hba *hba = su_dev->se_dev_hba; | |
1865 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; | |
1866 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1867 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1868 | int move = 0; | |
1869 | ||
1870 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1871 | if (!dev) |
c66ac9db NB |
1872 | return -ENODEV; |
1873 | ||
e3d6f909 | 1874 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { |
6708bb27 | 1875 | pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n", |
c66ac9db NB |
1876 | config_item_name(&hba->hba_group.cg_item), |
1877 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
1878 | return -EINVAL; | |
1879 | } | |
1880 | if (count > LU_GROUP_NAME_BUF) { | |
6708bb27 | 1881 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1882 | return -EINVAL; |
1883 | } | |
1884 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1885 | memcpy(buf, page, count); | |
1886 | /* | |
1887 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1888 | * making a new group association. | |
1889 | */ | |
1890 | if (strcmp(strstrip(buf), "NULL")) { | |
1891 | /* | |
1892 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1893 | * struct t10_alua_lu_gp. This reference is released with | |
1894 | * core_alua_get_lu_gp_by_name below(). | |
1895 | */ | |
1896 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1897 | if (!lu_gp_new) |
c66ac9db NB |
1898 | return -ENODEV; |
1899 | } | |
1900 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 | 1901 | if (!lu_gp_mem) { |
c66ac9db NB |
1902 | if (lu_gp_new) |
1903 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
6708bb27 | 1904 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" |
c66ac9db NB |
1905 | " pointer\n"); |
1906 | return -EINVAL; | |
1907 | } | |
1908 | ||
1909 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1910 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1911 | if (lu_gp) { |
c66ac9db NB |
1912 | /* |
1913 | * Clearing an existing lu_gp association, and replacing | |
1914 | * with NULL | |
1915 | */ | |
6708bb27 AG |
1916 | if (!lu_gp_new) { |
1917 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1918 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1919 | " %hu\n", | |
1920 | config_item_name(&hba->hba_group.cg_item), | |
1921 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1922 | config_item_name(&lu_gp->lu_gp_group.cg_item), | |
1923 | lu_gp->lu_gp_id); | |
1924 | ||
1925 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1926 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1927 | ||
1928 | return count; | |
1929 | } | |
1930 | /* | |
1931 | * Removing existing association of lu_gp_mem with lu_gp | |
1932 | */ | |
1933 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1934 | move = 1; | |
1935 | } | |
1936 | /* | |
1937 | * Associate lu_gp_mem with lu_gp_new. | |
1938 | */ | |
1939 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1940 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1941 | ||
6708bb27 | 1942 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1943 | " core/alua/lu_gps/%s, ID: %hu\n", |
1944 | (move) ? "Moving" : "Adding", | |
1945 | config_item_name(&hba->hba_group.cg_item), | |
1946 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1947 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), | |
1948 | lu_gp_new->lu_gp_id); | |
1949 | ||
1950 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1951 | return count; | |
1952 | } | |
1953 | ||
1954 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1955 | .attr = { .ca_owner = THIS_MODULE, | |
1956 | .ca_name = "alua_lu_gp", | |
1957 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1958 | .show = target_core_show_alua_lu_gp, | |
1959 | .store = target_core_store_alua_lu_gp, | |
1960 | }; | |
1961 | ||
1962 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1963 | &target_core_attr_dev_info.attr, | |
1964 | &target_core_attr_dev_control.attr, | |
1965 | &target_core_attr_dev_alias.attr, | |
1966 | &target_core_attr_dev_udev_path.attr, | |
1967 | &target_core_attr_dev_enable.attr, | |
1968 | &target_core_attr_dev_alua_lu_gp.attr, | |
1969 | NULL, | |
1970 | }; | |
1971 | ||
1972 | static void target_core_dev_release(struct config_item *item) | |
1973 | { | |
1974 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
1975 | struct se_subsystem_dev, se_dev_group); | |
1f6fe7cb NB |
1976 | struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); |
1977 | struct se_subsystem_api *t = hba->transport; | |
1978 | struct config_group *dev_cg = &se_dev->se_dev_group; | |
c66ac9db | 1979 | |
c66ac9db | 1980 | kfree(dev_cg->default_groups); |
1f6fe7cb NB |
1981 | /* |
1982 | * This pointer will set when the storage is enabled with: | |
1983 | *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` | |
1984 | */ | |
1985 | if (se_dev->se_dev_ptr) { | |
6708bb27 | 1986 | pr_debug("Target_Core_ConfigFS: Calling se_free_" |
1f6fe7cb NB |
1987 | "virtual_device() for se_dev_ptr: %p\n", |
1988 | se_dev->se_dev_ptr); | |
1989 | ||
1990 | se_free_virtual_device(se_dev->se_dev_ptr, hba); | |
1991 | } else { | |
1992 | /* | |
1993 | * Release struct se_subsystem_dev->se_dev_su_ptr.. | |
1994 | */ | |
6708bb27 | 1995 | pr_debug("Target_Core_ConfigFS: Calling t->free_" |
1f6fe7cb NB |
1996 | "device() for se_dev_su_ptr: %p\n", |
1997 | se_dev->se_dev_su_ptr); | |
1998 | ||
1999 | t->free_device(se_dev->se_dev_su_ptr); | |
2000 | } | |
2001 | ||
6708bb27 | 2002 | pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem" |
1f6fe7cb NB |
2003 | "_dev_t: %p\n", se_dev); |
2004 | kfree(se_dev); | |
c66ac9db NB |
2005 | } |
2006 | ||
2007 | static ssize_t target_core_dev_show(struct config_item *item, | |
2008 | struct configfs_attribute *attr, | |
2009 | char *page) | |
2010 | { | |
2011 | struct se_subsystem_dev *se_dev = container_of( | |
2012 | to_config_group(item), struct se_subsystem_dev, | |
2013 | se_dev_group); | |
2014 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2015 | attr, struct target_core_configfs_attribute, attr); | |
2016 | ||
6708bb27 | 2017 | if (!tc_attr->show) |
c66ac9db NB |
2018 | return -EINVAL; |
2019 | ||
5951146d | 2020 | return tc_attr->show(se_dev, page); |
c66ac9db NB |
2021 | } |
2022 | ||
2023 | static ssize_t target_core_dev_store(struct config_item *item, | |
2024 | struct configfs_attribute *attr, | |
2025 | const char *page, size_t count) | |
2026 | { | |
2027 | struct se_subsystem_dev *se_dev = container_of( | |
2028 | to_config_group(item), struct se_subsystem_dev, | |
2029 | se_dev_group); | |
2030 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2031 | attr, struct target_core_configfs_attribute, attr); | |
2032 | ||
6708bb27 | 2033 | if (!tc_attr->store) |
c66ac9db NB |
2034 | return -EINVAL; |
2035 | ||
5951146d | 2036 | return tc_attr->store(se_dev, page, count); |
c66ac9db NB |
2037 | } |
2038 | ||
2039 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2040 | .release = target_core_dev_release, | |
2041 | .show_attribute = target_core_dev_show, | |
2042 | .store_attribute = target_core_dev_store, | |
2043 | }; | |
2044 | ||
2045 | static struct config_item_type target_core_dev_cit = { | |
2046 | .ct_item_ops = &target_core_dev_item_ops, | |
2047 | .ct_attrs = lio_core_dev_attrs, | |
2048 | .ct_owner = THIS_MODULE, | |
2049 | }; | |
2050 | ||
2051 | /* End functions for struct config_item_type target_core_dev_cit */ | |
2052 | ||
2053 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2054 | ||
2055 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2056 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2057 | static struct target_core_alua_lu_gp_attribute \ | |
2058 | target_core_alua_lu_gp_##_name = \ | |
2059 | __CONFIGFS_EATTR(_name, _mode, \ | |
2060 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2061 | target_core_alua_lu_gp_store_attr_##_name); | |
2062 | ||
2063 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2064 | static struct target_core_alua_lu_gp_attribute \ | |
2065 | target_core_alua_lu_gp_##_name = \ | |
2066 | __CONFIGFS_EATTR_RO(_name, \ | |
2067 | target_core_alua_lu_gp_show_attr_##_name); | |
2068 | ||
2069 | /* | |
2070 | * lu_gp_id | |
2071 | */ | |
2072 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2073 | struct t10_alua_lu_gp *lu_gp, | |
2074 | char *page) | |
2075 | { | |
6708bb27 | 2076 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
2077 | return 0; |
2078 | ||
2079 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2080 | } | |
2081 | ||
2082 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2083 | struct t10_alua_lu_gp *lu_gp, | |
2084 | const char *page, | |
2085 | size_t count) | |
2086 | { | |
2087 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2088 | unsigned long lu_gp_id; | |
2089 | int ret; | |
2090 | ||
2091 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
2092 | if (ret < 0) { | |
6708bb27 | 2093 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2094 | " lu_gp_id\n", ret); |
2095 | return -EINVAL; | |
2096 | } | |
2097 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2098 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2099 | " 0x0000ffff\n", lu_gp_id); |
2100 | return -EINVAL; | |
2101 | } | |
2102 | ||
2103 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2104 | if (ret < 0) | |
2105 | return -EINVAL; | |
2106 | ||
6708bb27 | 2107 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2108 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2109 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2110 | lu_gp->lu_gp_id); | |
2111 | ||
2112 | return count; | |
2113 | } | |
2114 | ||
2115 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2116 | ||
2117 | /* | |
2118 | * members | |
2119 | */ | |
2120 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2121 | struct t10_alua_lu_gp *lu_gp, | |
2122 | char *page) | |
2123 | { | |
2124 | struct se_device *dev; | |
2125 | struct se_hba *hba; | |
2126 | struct se_subsystem_dev *su_dev; | |
2127 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2128 | ssize_t len = 0, cur_len; | |
2129 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2130 | ||
2131 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2132 | ||
2133 | spin_lock(&lu_gp->lu_gp_lock); | |
2134 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2135 | dev = lu_gp_mem->lu_gp_mem_dev; | |
2136 | su_dev = dev->se_sub_dev; | |
2137 | hba = su_dev->se_dev_hba; | |
2138 | ||
2139 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2140 | config_item_name(&hba->hba_group.cg_item), | |
2141 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
2142 | cur_len++; /* Extra byte for NULL terminator */ | |
2143 | ||
2144 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2145 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2146 | "_members buffer\n"); |
2147 | break; | |
2148 | } | |
2149 | memcpy(page+len, buf, cur_len); | |
2150 | len += cur_len; | |
2151 | } | |
2152 | spin_unlock(&lu_gp->lu_gp_lock); | |
2153 | ||
2154 | return len; | |
2155 | } | |
2156 | ||
2157 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2158 | ||
2159 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2160 | ||
2161 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2162 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2163 | &target_core_alua_lu_gp_members.attr, | |
2164 | NULL, | |
2165 | }; | |
2166 | ||
1f6fe7cb NB |
2167 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2168 | { | |
2169 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2170 | struct t10_alua_lu_gp, lu_gp_group); | |
2171 | ||
2172 | core_alua_free_lu_gp(lu_gp); | |
2173 | } | |
2174 | ||
c66ac9db | 2175 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2176 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2177 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2178 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2179 | }; | |
2180 | ||
2181 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2182 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2183 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2184 | .ct_owner = THIS_MODULE, | |
2185 | }; | |
2186 | ||
2187 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2188 | ||
2189 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2190 | ||
2191 | static struct config_group *target_core_alua_create_lu_gp( | |
2192 | struct config_group *group, | |
2193 | const char *name) | |
2194 | { | |
2195 | struct t10_alua_lu_gp *lu_gp; | |
2196 | struct config_group *alua_lu_gp_cg = NULL; | |
2197 | struct config_item *alua_lu_gp_ci = NULL; | |
2198 | ||
2199 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2200 | if (IS_ERR(lu_gp)) | |
2201 | return NULL; | |
2202 | ||
2203 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2204 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2205 | ||
2206 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2207 | &target_core_alua_lu_gp_cit); | |
2208 | ||
6708bb27 | 2209 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2210 | " Group: core/alua/lu_gps/%s\n", |
2211 | config_item_name(alua_lu_gp_ci)); | |
2212 | ||
2213 | return alua_lu_gp_cg; | |
2214 | ||
2215 | } | |
2216 | ||
2217 | static void target_core_alua_drop_lu_gp( | |
2218 | struct config_group *group, | |
2219 | struct config_item *item) | |
2220 | { | |
2221 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2222 | struct t10_alua_lu_gp, lu_gp_group); | |
2223 | ||
6708bb27 | 2224 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2225 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2226 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2227 | /* |
2228 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2229 | * -> target_core_alua_lu_gp_release() | |
2230 | */ | |
c66ac9db | 2231 | config_item_put(item); |
c66ac9db NB |
2232 | } |
2233 | ||
2234 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2235 | .make_group = &target_core_alua_create_lu_gp, | |
2236 | .drop_item = &target_core_alua_drop_lu_gp, | |
2237 | }; | |
2238 | ||
2239 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2240 | .ct_item_ops = NULL, | |
2241 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2242 | .ct_owner = THIS_MODULE, | |
2243 | }; | |
2244 | ||
2245 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2246 | ||
2247 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2248 | ||
2249 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2250 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2251 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2252 | target_core_alua_tg_pt_gp_##_name = \ | |
2253 | __CONFIGFS_EATTR(_name, _mode, \ | |
2254 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2255 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2256 | ||
2257 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2258 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2259 | target_core_alua_tg_pt_gp_##_name = \ | |
2260 | __CONFIGFS_EATTR_RO(_name, \ | |
2261 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2262 | ||
2263 | /* | |
2264 | * alua_access_state | |
2265 | */ | |
2266 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2267 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2268 | char *page) | |
2269 | { | |
2270 | return sprintf(page, "%d\n", | |
2271 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2272 | } | |
2273 | ||
2274 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2275 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2276 | const char *page, | |
2277 | size_t count) | |
2278 | { | |
2279 | struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; | |
2280 | unsigned long tmp; | |
2281 | int new_state, ret; | |
2282 | ||
6708bb27 AG |
2283 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2284 | pr_err("Unable to do implict ALUA on non valid" | |
c66ac9db NB |
2285 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2286 | return -EINVAL; | |
2287 | } | |
2288 | ||
2289 | ret = strict_strtoul(page, 0, &tmp); | |
2290 | if (ret < 0) { | |
6708bb27 | 2291 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db NB |
2292 | " %s\n", page); |
2293 | return -EINVAL; | |
2294 | } | |
2295 | new_state = (int)tmp; | |
2296 | ||
2297 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
6708bb27 | 2298 | pr_err("Unable to process implict configfs ALUA" |
c66ac9db NB |
2299 | " transition while TPGS_IMPLICT_ALUA is diabled\n"); |
2300 | return -EINVAL; | |
2301 | } | |
2302 | ||
2303 | ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, | |
2304 | NULL, NULL, new_state, 0); | |
2305 | return (!ret) ? count : -EINVAL; | |
2306 | } | |
2307 | ||
2308 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2309 | ||
2310 | /* | |
2311 | * alua_access_status | |
2312 | */ | |
2313 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2314 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2315 | char *page) | |
2316 | { | |
2317 | return sprintf(page, "%s\n", | |
2318 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2319 | } | |
2320 | ||
2321 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2322 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2323 | const char *page, | |
2324 | size_t count) | |
2325 | { | |
2326 | unsigned long tmp; | |
2327 | int new_status, ret; | |
2328 | ||
6708bb27 AG |
2329 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2330 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2331 | " valid tg_pt_gp ID: %hu\n", |
2332 | tg_pt_gp->tg_pt_gp_valid_id); | |
2333 | return -EINVAL; | |
2334 | } | |
2335 | ||
2336 | ret = strict_strtoul(page, 0, &tmp); | |
2337 | if (ret < 0) { | |
6708bb27 | 2338 | pr_err("Unable to extract new ALUA access status" |
c66ac9db NB |
2339 | " from %s\n", page); |
2340 | return -EINVAL; | |
2341 | } | |
2342 | new_status = (int)tmp; | |
2343 | ||
2344 | if ((new_status != ALUA_STATUS_NONE) && | |
2345 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2346 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
6708bb27 | 2347 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2348 | new_status); |
2349 | return -EINVAL; | |
2350 | } | |
2351 | ||
2352 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2353 | return count; | |
2354 | } | |
2355 | ||
2356 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2357 | ||
2358 | /* | |
2359 | * alua_access_type | |
2360 | */ | |
2361 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2362 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2363 | char *page) | |
2364 | { | |
2365 | return core_alua_show_access_type(tg_pt_gp, page); | |
2366 | } | |
2367 | ||
2368 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2369 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2370 | const char *page, | |
2371 | size_t count) | |
2372 | { | |
2373 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2374 | } | |
2375 | ||
2376 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2377 | ||
2378 | /* | |
2379 | * alua_write_metadata | |
2380 | */ | |
2381 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2382 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2383 | char *page) | |
2384 | { | |
2385 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2386 | } | |
2387 | ||
2388 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2389 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2390 | const char *page, | |
2391 | size_t count) | |
2392 | { | |
2393 | unsigned long tmp; | |
2394 | int ret; | |
2395 | ||
2396 | ret = strict_strtoul(page, 0, &tmp); | |
2397 | if (ret < 0) { | |
6708bb27 | 2398 | pr_err("Unable to extract alua_write_metadata\n"); |
c66ac9db NB |
2399 | return -EINVAL; |
2400 | } | |
2401 | ||
2402 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2403 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2404 | " %lu\n", tmp); |
2405 | return -EINVAL; | |
2406 | } | |
2407 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2408 | ||
2409 | return count; | |
2410 | } | |
2411 | ||
2412 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2413 | ||
2414 | ||
2415 | ||
2416 | /* | |
2417 | * nonop_delay_msecs | |
2418 | */ | |
2419 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2420 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2421 | char *page) | |
2422 | { | |
2423 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2424 | ||
2425 | } | |
2426 | ||
2427 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2428 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2429 | const char *page, | |
2430 | size_t count) | |
2431 | { | |
2432 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2433 | } | |
2434 | ||
2435 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2436 | ||
2437 | /* | |
2438 | * trans_delay_msecs | |
2439 | */ | |
2440 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2441 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2442 | char *page) | |
2443 | { | |
2444 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2445 | } | |
2446 | ||
2447 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2448 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2449 | const char *page, | |
2450 | size_t count) | |
2451 | { | |
2452 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2453 | } | |
2454 | ||
2455 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2456 | ||
2457 | /* | |
2458 | * preferred | |
2459 | */ | |
2460 | ||
2461 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2462 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2463 | char *page) | |
2464 | { | |
2465 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2466 | } | |
2467 | ||
2468 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2469 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2470 | const char *page, | |
2471 | size_t count) | |
2472 | { | |
2473 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2474 | } | |
2475 | ||
2476 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2477 | ||
2478 | /* | |
2479 | * tg_pt_gp_id | |
2480 | */ | |
2481 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2482 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2483 | char *page) | |
2484 | { | |
6708bb27 | 2485 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2486 | return 0; |
2487 | ||
2488 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2489 | } | |
2490 | ||
2491 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2492 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2493 | const char *page, | |
2494 | size_t count) | |
2495 | { | |
2496 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2497 | unsigned long tg_pt_gp_id; | |
2498 | int ret; | |
2499 | ||
2500 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2501 | if (ret < 0) { | |
6708bb27 | 2502 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2503 | " tg_pt_gp_id\n", ret); |
2504 | return -EINVAL; | |
2505 | } | |
2506 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2507 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2508 | " 0x0000ffff\n", tg_pt_gp_id); |
2509 | return -EINVAL; | |
2510 | } | |
2511 | ||
2512 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2513 | if (ret < 0) | |
2514 | return -EINVAL; | |
2515 | ||
6708bb27 | 2516 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2517 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2518 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2519 | tg_pt_gp->tg_pt_gp_id); | |
2520 | ||
2521 | return count; | |
2522 | } | |
2523 | ||
2524 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2525 | ||
2526 | /* | |
2527 | * members | |
2528 | */ | |
2529 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2530 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2531 | char *page) | |
2532 | { | |
2533 | struct se_port *port; | |
2534 | struct se_portal_group *tpg; | |
2535 | struct se_lun *lun; | |
2536 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2537 | ssize_t len = 0, cur_len; | |
2538 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2539 | ||
2540 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2541 | ||
2542 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2543 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2544 | tg_pt_gp_mem_list) { | |
2545 | port = tg_pt_gp_mem->tg_pt; | |
2546 | tpg = port->sep_tpg; | |
2547 | lun = port->sep_lun; | |
2548 | ||
2549 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2550 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2551 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2552 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2553 | config_item_name(&lun->lun_group.cg_item)); |
2554 | cur_len++; /* Extra byte for NULL terminator */ | |
2555 | ||
2556 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2557 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2558 | "_members buffer\n"); |
2559 | break; | |
2560 | } | |
2561 | memcpy(page+len, buf, cur_len); | |
2562 | len += cur_len; | |
2563 | } | |
2564 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2565 | ||
2566 | return len; | |
2567 | } | |
2568 | ||
2569 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2570 | ||
2571 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2572 | tg_pt_gp_group); | |
2573 | ||
2574 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2575 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2576 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2577 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2578 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2579 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2580 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
2581 | &target_core_alua_tg_pt_gp_preferred.attr, | |
2582 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2583 | &target_core_alua_tg_pt_gp_members.attr, | |
2584 | NULL, | |
2585 | }; | |
2586 | ||
1f6fe7cb NB |
2587 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2588 | { | |
2589 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2590 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2591 | ||
2592 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2593 | } | |
2594 | ||
c66ac9db | 2595 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2596 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2597 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2598 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2599 | }; | |
2600 | ||
2601 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2602 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2603 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2604 | .ct_owner = THIS_MODULE, | |
2605 | }; | |
2606 | ||
2607 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2608 | ||
2609 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2610 | ||
2611 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2612 | struct config_group *group, | |
2613 | const char *name) | |
2614 | { | |
2615 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2616 | alua_tg_pt_gps_group); | |
2617 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2618 | struct se_subsystem_dev *su_dev = alua->t10_sub_dev; | |
2619 | struct config_group *alua_tg_pt_gp_cg = NULL; | |
2620 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2621 | ||
2622 | tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); | |
6708bb27 | 2623 | if (!tg_pt_gp) |
c66ac9db NB |
2624 | return NULL; |
2625 | ||
2626 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2627 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2628 | ||
2629 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2630 | &target_core_alua_tg_pt_gp_cit); | |
2631 | ||
6708bb27 | 2632 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2633 | " Group: alua/tg_pt_gps/%s\n", |
2634 | config_item_name(alua_tg_pt_gp_ci)); | |
2635 | ||
2636 | return alua_tg_pt_gp_cg; | |
2637 | } | |
2638 | ||
2639 | static void target_core_alua_drop_tg_pt_gp( | |
2640 | struct config_group *group, | |
2641 | struct config_item *item) | |
2642 | { | |
2643 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2644 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2645 | ||
6708bb27 | 2646 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2647 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2648 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2649 | /* |
2650 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2651 | * -> target_core_alua_tg_pt_gp_release(). | |
2652 | */ | |
c66ac9db | 2653 | config_item_put(item); |
c66ac9db NB |
2654 | } |
2655 | ||
2656 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2657 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2658 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2659 | }; | |
2660 | ||
2661 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2662 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2663 | .ct_owner = THIS_MODULE, | |
2664 | }; | |
2665 | ||
2666 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2667 | ||
2668 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2669 | ||
2670 | /* | |
2671 | * target_core_alua_cit is a ConfigFS group that lives under | |
2672 | * /sys/kernel/config/target/core/alua. There are default groups | |
2673 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2674 | * target_core_alua_cit in target_core_init_configfs() below. | |
2675 | */ | |
2676 | static struct config_item_type target_core_alua_cit = { | |
2677 | .ct_item_ops = NULL, | |
2678 | .ct_attrs = NULL, | |
2679 | .ct_owner = THIS_MODULE, | |
2680 | }; | |
2681 | ||
2682 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2683 | ||
12d23384 NB |
2684 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2685 | ||
2686 | static struct config_group *target_core_stat_mkdir( | |
2687 | struct config_group *group, | |
2688 | const char *name) | |
2689 | { | |
2690 | return ERR_PTR(-ENOSYS); | |
2691 | } | |
2692 | ||
2693 | static void target_core_stat_rmdir( | |
2694 | struct config_group *group, | |
2695 | struct config_item *item) | |
2696 | { | |
2697 | return; | |
2698 | } | |
2699 | ||
2700 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2701 | .make_group = &target_core_stat_mkdir, | |
2702 | .drop_item = &target_core_stat_rmdir, | |
2703 | }; | |
2704 | ||
2705 | static struct config_item_type target_core_stat_cit = { | |
2706 | .ct_group_ops = &target_core_stat_group_ops, | |
2707 | .ct_owner = THIS_MODULE, | |
2708 | }; | |
2709 | ||
2710 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2711 | ||
c66ac9db NB |
2712 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2713 | ||
2714 | static struct config_group *target_core_make_subdev( | |
2715 | struct config_group *group, | |
2716 | const char *name) | |
2717 | { | |
2718 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2719 | struct se_subsystem_dev *se_dev; | |
2720 | struct se_subsystem_api *t; | |
2721 | struct config_item *hba_ci = &group->cg_item; | |
2722 | struct se_hba *hba = item_to_hba(hba_ci); | |
2723 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; | |
12d23384 NB |
2724 | struct config_group *dev_stat_grp = NULL; |
2725 | int errno = -ENOMEM, ret; | |
c66ac9db | 2726 | |
12d23384 NB |
2727 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2728 | if (ret) | |
2729 | return ERR_PTR(ret); | |
c66ac9db NB |
2730 | /* |
2731 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2732 | */ | |
2733 | t = hba->transport; | |
2734 | ||
2735 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
2736 | if (!se_dev) { | |
6708bb27 | 2737 | pr_err("Unable to allocate memory for" |
c66ac9db NB |
2738 | " struct se_subsystem_dev\n"); |
2739 | goto unlock; | |
2740 | } | |
c66ac9db NB |
2741 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
2742 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
2743 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
2744 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
2745 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
2746 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
2747 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
2748 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
2749 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 2750 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
2751 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
2752 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
2753 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
2754 | ||
2755 | se_dev->se_dev_hba = hba; | |
2756 | dev_cg = &se_dev->se_dev_group; | |
2757 | ||
12d23384 | 2758 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, |
c66ac9db | 2759 | GFP_KERNEL); |
6708bb27 | 2760 | if (!dev_cg->default_groups) |
c66ac9db NB |
2761 | goto out; |
2762 | /* | |
2763 | * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr | |
2764 | * for ->allocate_virtdevice() | |
2765 | * | |
2766 | * se_dev->se_dev_ptr will be set after ->create_virtdev() | |
2767 | * has been called successfully in the next level up in the | |
2768 | * configfs tree for device object's struct config_group. | |
2769 | */ | |
2770 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); | |
6708bb27 AG |
2771 | if (!se_dev->se_dev_su_ptr) { |
2772 | pr_err("Unable to locate subsystem dependent pointer" | |
c66ac9db NB |
2773 | " from allocate_virtdevice()\n"); |
2774 | goto out; | |
2775 | } | |
c66ac9db NB |
2776 | |
2777 | config_group_init_type_name(&se_dev->se_dev_group, name, | |
2778 | &target_core_dev_cit); | |
2779 | config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", | |
2780 | &target_core_dev_attrib_cit); | |
2781 | config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", | |
2782 | &target_core_dev_pr_cit); | |
2783 | config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", | |
2784 | &target_core_dev_wwn_cit); | |
2785 | config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, | |
2786 | "alua", &target_core_alua_tg_pt_gps_cit); | |
12d23384 NB |
2787 | config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, |
2788 | "statistics", &target_core_stat_cit); | |
2789 | ||
c66ac9db NB |
2790 | dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; |
2791 | dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; | |
2792 | dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; | |
2793 | dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; | |
12d23384 NB |
2794 | dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; |
2795 | dev_cg->default_groups[5] = NULL; | |
c66ac9db | 2796 | /* |
12d23384 | 2797 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db NB |
2798 | */ |
2799 | tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); | |
6708bb27 | 2800 | if (!tg_pt_gp) |
c66ac9db NB |
2801 | goto out; |
2802 | ||
e3d6f909 | 2803 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2804 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2805 | GFP_KERNEL); | |
6708bb27 AG |
2806 | if (!tg_pt_gp_cg->default_groups) { |
2807 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db NB |
2808 | "default_groups\n"); |
2809 | goto out; | |
2810 | } | |
2811 | ||
2812 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2813 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2814 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2815 | tg_pt_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2816 | se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
12d23384 NB |
2817 | /* |
2818 | * Add core/$HBA/$DEV/statistics/ default groups | |
2819 | */ | |
e3d6f909 | 2820 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2821 | dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, |
2822 | GFP_KERNEL); | |
2823 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2824 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
12d23384 NB |
2825 | goto out; |
2826 | } | |
2827 | target_stat_setup_dev_default_groups(se_dev); | |
c66ac9db | 2828 | |
6708bb27 | 2829 | pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" |
c66ac9db NB |
2830 | " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); |
2831 | ||
2832 | mutex_unlock(&hba->hba_access_mutex); | |
2833 | return &se_dev->se_dev_group; | |
2834 | out: | |
e3d6f909 AG |
2835 | if (se_dev->t10_alua.default_tg_pt_gp) { |
2836 | core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp); | |
2837 | se_dev->t10_alua.default_tg_pt_gp = NULL; | |
c66ac9db | 2838 | } |
12d23384 NB |
2839 | if (dev_stat_grp) |
2840 | kfree(dev_stat_grp->default_groups); | |
c66ac9db NB |
2841 | if (tg_pt_gp_cg) |
2842 | kfree(tg_pt_gp_cg->default_groups); | |
2843 | if (dev_cg) | |
2844 | kfree(dev_cg->default_groups); | |
2845 | if (se_dev->se_dev_su_ptr) | |
2846 | t->free_device(se_dev->se_dev_su_ptr); | |
2847 | kfree(se_dev); | |
2848 | unlock: | |
2849 | mutex_unlock(&hba->hba_access_mutex); | |
12d23384 | 2850 | return ERR_PTR(errno); |
c66ac9db NB |
2851 | } |
2852 | ||
2853 | static void target_core_drop_subdev( | |
2854 | struct config_group *group, | |
2855 | struct config_item *item) | |
2856 | { | |
2857 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2858 | struct se_subsystem_dev, se_dev_group); | |
2859 | struct se_hba *hba; | |
2860 | struct se_subsystem_api *t; | |
2861 | struct config_item *df_item; | |
12d23384 | 2862 | struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2863 | int i; |
c66ac9db NB |
2864 | |
2865 | hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); | |
2866 | ||
1f6fe7cb | 2867 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db NB |
2868 | t = hba->transport; |
2869 | ||
e3d6f909 | 2870 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2871 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2872 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2873 | dev_stat_grp->default_groups[i] = NULL; | |
2874 | config_item_put(df_item); | |
2875 | } | |
2876 | kfree(dev_stat_grp->default_groups); | |
2877 | ||
e3d6f909 | 2878 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2879 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2880 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2881 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2882 | config_item_put(df_item); | |
2883 | } | |
2884 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2885 | /* |
2886 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2887 | * directly from target_core_alua_tg_pt_gp_release(). | |
2888 | */ | |
e3d6f909 | 2889 | se_dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db NB |
2890 | |
2891 | dev_cg = &se_dev->se_dev_group; | |
2892 | for (i = 0; dev_cg->default_groups[i]; i++) { | |
2893 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2894 | dev_cg->default_groups[i] = NULL; | |
2895 | config_item_put(df_item); | |
2896 | } | |
c66ac9db | 2897 | /* |
1f6fe7cb NB |
2898 | * The releasing of se_dev and associated se_dev->se_dev_ptr is done |
2899 | * from target_core_dev_item_ops->release() ->target_core_dev_release(). | |
c66ac9db | 2900 | */ |
1f6fe7cb | 2901 | config_item_put(item); |
c66ac9db | 2902 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2903 | } |
2904 | ||
2905 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2906 | .make_group = target_core_make_subdev, | |
2907 | .drop_item = target_core_drop_subdev, | |
2908 | }; | |
2909 | ||
2910 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2911 | #define SE_HBA_ATTR(_name, _mode) \ | |
2912 | static struct target_core_hba_attribute \ | |
2913 | target_core_hba_##_name = \ | |
2914 | __CONFIGFS_EATTR(_name, _mode, \ | |
2915 | target_core_hba_show_attr_##_name, \ | |
2916 | target_core_hba_store_attr_##_name); | |
2917 | ||
2918 | #define SE_HBA_ATTR_RO(_name) \ | |
2919 | static struct target_core_hba_attribute \ | |
2920 | target_core_hba_##_name = \ | |
2921 | __CONFIGFS_EATTR_RO(_name, \ | |
2922 | target_core_hba_show_attr_##_name); | |
2923 | ||
2924 | static ssize_t target_core_hba_show_attr_hba_info( | |
2925 | struct se_hba *hba, | |
2926 | char *page) | |
2927 | { | |
2928 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2929 | hba->hba_id, hba->transport->name, | |
2930 | TARGET_CORE_CONFIGFS_VERSION); | |
2931 | } | |
2932 | ||
2933 | SE_HBA_ATTR_RO(hba_info); | |
2934 | ||
2935 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2936 | char *page) | |
2937 | { | |
2938 | int hba_mode = 0; | |
2939 | ||
2940 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2941 | hba_mode = 1; | |
2942 | ||
2943 | return sprintf(page, "%d\n", hba_mode); | |
2944 | } | |
2945 | ||
2946 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2947 | const char *page, size_t count) | |
2948 | { | |
2949 | struct se_subsystem_api *transport = hba->transport; | |
2950 | unsigned long mode_flag; | |
2951 | int ret; | |
2952 | ||
2953 | if (transport->pmode_enable_hba == NULL) | |
2954 | return -EINVAL; | |
2955 | ||
2956 | ret = strict_strtoul(page, 0, &mode_flag); | |
2957 | if (ret < 0) { | |
6708bb27 | 2958 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
c66ac9db NB |
2959 | return -EINVAL; |
2960 | } | |
2961 | ||
2962 | spin_lock(&hba->device_lock); | |
6708bb27 AG |
2963 | if (!list_empty(&hba->hba_dev_list)) { |
2964 | pr_err("Unable to set hba_mode with active devices\n"); | |
c66ac9db NB |
2965 | spin_unlock(&hba->device_lock); |
2966 | return -EINVAL; | |
2967 | } | |
2968 | spin_unlock(&hba->device_lock); | |
2969 | ||
2970 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2971 | if (ret < 0) | |
2972 | return -EINVAL; | |
2973 | if (ret > 0) | |
2974 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2975 | else if (ret == 0) | |
2976 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2977 | ||
2978 | return count; | |
2979 | } | |
2980 | ||
2981 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2982 | ||
2983 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2984 | ||
1f6fe7cb NB |
2985 | static void target_core_hba_release(struct config_item *item) |
2986 | { | |
2987 | struct se_hba *hba = container_of(to_config_group(item), | |
2988 | struct se_hba, hba_group); | |
2989 | core_delete_hba(hba); | |
2990 | } | |
2991 | ||
c66ac9db NB |
2992 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2993 | &target_core_hba_hba_info.attr, | |
2994 | &target_core_hba_hba_mode.attr, | |
2995 | NULL, | |
2996 | }; | |
2997 | ||
2998 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2999 | .release = target_core_hba_release, |
c66ac9db NB |
3000 | .show_attribute = target_core_hba_attr_show, |
3001 | .store_attribute = target_core_hba_attr_store, | |
3002 | }; | |
3003 | ||
3004 | static struct config_item_type target_core_hba_cit = { | |
3005 | .ct_item_ops = &target_core_hba_item_ops, | |
3006 | .ct_group_ops = &target_core_hba_group_ops, | |
3007 | .ct_attrs = target_core_hba_attrs, | |
3008 | .ct_owner = THIS_MODULE, | |
3009 | }; | |
3010 | ||
3011 | static struct config_group *target_core_call_addhbatotarget( | |
3012 | struct config_group *group, | |
3013 | const char *name) | |
3014 | { | |
3015 | char *se_plugin_str, *str, *str2; | |
3016 | struct se_hba *hba; | |
3017 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3018 | unsigned long plugin_dep_id = 0; | |
3019 | int ret; | |
3020 | ||
3021 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3022 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3023 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3024 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3025 | TARGET_CORE_NAME_MAX_LEN); | |
3026 | return ERR_PTR(-ENAMETOOLONG); | |
3027 | } | |
3028 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3029 | ||
3030 | str = strstr(buf, "_"); | |
6708bb27 AG |
3031 | if (!str) { |
3032 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3033 | return ERR_PTR(-EINVAL); |
3034 | } | |
3035 | se_plugin_str = buf; | |
3036 | /* | |
3037 | * Special case for subsystem plugins that have "_" in their names. | |
3038 | * Namely rd_direct and rd_mcp.. | |
3039 | */ | |
3040 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3041 | if (str2) { |
c66ac9db NB |
3042 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3043 | str2++; /* Skip to start of plugin dependent ID */ | |
3044 | str = str2; | |
3045 | } else { | |
3046 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3047 | str++; /* Skip to start of plugin dependent ID */ | |
3048 | } | |
3049 | ||
3050 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
3051 | if (ret < 0) { | |
6708bb27 | 3052 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
3053 | " plugin_dep_id\n", ret); |
3054 | return ERR_PTR(-EINVAL); | |
3055 | } | |
3056 | /* | |
3057 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3058 | */ | |
dbc5623e | 3059 | transport_subsystem_check_init(); |
c66ac9db NB |
3060 | |
3061 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3062 | if (IS_ERR(hba)) | |
3063 | return ERR_CAST(hba); | |
3064 | ||
3065 | config_group_init_type_name(&hba->hba_group, name, | |
3066 | &target_core_hba_cit); | |
3067 | ||
3068 | return &hba->hba_group; | |
3069 | } | |
3070 | ||
3071 | static void target_core_call_delhbafromtarget( | |
3072 | struct config_group *group, | |
3073 | struct config_item *item) | |
3074 | { | |
1f6fe7cb NB |
3075 | /* |
3076 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3077 | * -> target_core_hba_release() | |
3078 | */ | |
c66ac9db | 3079 | config_item_put(item); |
c66ac9db NB |
3080 | } |
3081 | ||
3082 | static struct configfs_group_operations target_core_group_ops = { | |
3083 | .make_group = target_core_call_addhbatotarget, | |
3084 | .drop_item = target_core_call_delhbafromtarget, | |
3085 | }; | |
3086 | ||
3087 | static struct config_item_type target_core_cit = { | |
3088 | .ct_item_ops = NULL, | |
3089 | .ct_group_ops = &target_core_group_ops, | |
3090 | .ct_attrs = NULL, | |
3091 | .ct_owner = THIS_MODULE, | |
3092 | }; | |
3093 | ||
3094 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3095 | ||
54550fab | 3096 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3097 | { |
3098 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3099 | struct config_group *lu_gp_cg = NULL; | |
3100 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3101 | struct t10_alua_lu_gp *lu_gp; |
3102 | int ret; | |
3103 | ||
6708bb27 | 3104 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3105 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3106 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3107 | ||
3108 | subsys = target_core_subsystem[0]; | |
3109 | config_group_init(&subsys->su_group); | |
3110 | mutex_init(&subsys->su_mutex); | |
3111 | ||
3112 | INIT_LIST_HEAD(&g_tf_list); | |
3113 | mutex_init(&g_tf_lock); | |
e3d6f909 | 3114 | ret = init_se_kmem_caches(); |
c66ac9db | 3115 | if (ret < 0) |
e3d6f909 | 3116 | return ret; |
c66ac9db NB |
3117 | /* |
3118 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3119 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3120 | */ | |
3121 | target_cg = &subsys->su_group; | |
3122 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3123 | GFP_KERNEL); | |
6708bb27 AG |
3124 | if (!target_cg->default_groups) { |
3125 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
c66ac9db NB |
3126 | goto out_global; |
3127 | } | |
3128 | ||
e3d6f909 | 3129 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3130 | "core", &target_core_cit); |
e3d6f909 | 3131 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3132 | target_cg->default_groups[1] = NULL; |
3133 | /* | |
3134 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3135 | */ | |
e3d6f909 | 3136 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3137 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3138 | GFP_KERNEL); | |
6708bb27 AG |
3139 | if (!hba_cg->default_groups) { |
3140 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
c66ac9db NB |
3141 | goto out_global; |
3142 | } | |
e3d6f909 | 3143 | config_group_init_type_name(&alua_group, |
c66ac9db | 3144 | "alua", &target_core_alua_cit); |
e3d6f909 | 3145 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3146 | hba_cg->default_groups[1] = NULL; |
3147 | /* | |
3148 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3149 | * groups under /sys/kernel/config/target/core/alua/ | |
3150 | */ | |
e3d6f909 | 3151 | alua_cg = &alua_group; |
c66ac9db NB |
3152 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3153 | GFP_KERNEL); | |
6708bb27 AG |
3154 | if (!alua_cg->default_groups) { |
3155 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
c66ac9db NB |
3156 | goto out_global; |
3157 | } | |
3158 | ||
e3d6f909 | 3159 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3160 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3161 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3162 | alua_cg->default_groups[1] = NULL; |
3163 | /* | |
3164 | * Add core/alua/lu_gps/default_lu_gp | |
3165 | */ | |
3166 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
3167 | if (IS_ERR(lu_gp)) | |
3168 | goto out_global; | |
3169 | ||
e3d6f909 | 3170 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3171 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3172 | GFP_KERNEL); | |
6708bb27 AG |
3173 | if (!lu_gp_cg->default_groups) { |
3174 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
c66ac9db NB |
3175 | goto out_global; |
3176 | } | |
3177 | ||
3178 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3179 | &target_core_alua_lu_gp_cit); | |
3180 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3181 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3182 | default_lu_gp = lu_gp; |
c66ac9db NB |
3183 | /* |
3184 | * Register the target_core_mod subsystem with configfs. | |
3185 | */ | |
3186 | ret = configfs_register_subsystem(subsys); | |
3187 | if (ret < 0) { | |
6708bb27 | 3188 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3189 | ret, subsys->su_group.cg_item.ci_namebuf); |
3190 | goto out_global; | |
3191 | } | |
6708bb27 | 3192 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
3193 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
3194 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3195 | /* | |
3196 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3197 | */ | |
3198 | ret = rd_module_init(); | |
3199 | if (ret < 0) | |
3200 | goto out; | |
3201 | ||
3202 | if (core_dev_setup_virtual_lun0() < 0) | |
3203 | goto out; | |
3204 | ||
c66ac9db NB |
3205 | return 0; |
3206 | ||
3207 | out: | |
3208 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3209 | core_dev_release_virtual_lun0(); |
3210 | rd_module_exit(); | |
3211 | out_global: | |
e3d6f909 AG |
3212 | if (default_lu_gp) { |
3213 | core_alua_free_lu_gp(default_lu_gp); | |
3214 | default_lu_gp = NULL; | |
c66ac9db NB |
3215 | } |
3216 | if (lu_gp_cg) | |
3217 | kfree(lu_gp_cg->default_groups); | |
3218 | if (alua_cg) | |
3219 | kfree(alua_cg->default_groups); | |
3220 | if (hba_cg) | |
3221 | kfree(hba_cg->default_groups); | |
3222 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3223 | release_se_kmem_caches(); |
3224 | return ret; | |
c66ac9db NB |
3225 | } |
3226 | ||
54550fab | 3227 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3228 | { |
3229 | struct configfs_subsystem *subsys; | |
3230 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3231 | struct config_item *item; | |
3232 | int i; | |
3233 | ||
c66ac9db NB |
3234 | subsys = target_core_subsystem[0]; |
3235 | ||
e3d6f909 | 3236 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3237 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3238 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3239 | lu_gp_cg->default_groups[i] = NULL; | |
3240 | config_item_put(item); | |
3241 | } | |
3242 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3243 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3244 | |
e3d6f909 | 3245 | alua_cg = &alua_group; |
c66ac9db NB |
3246 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3247 | item = &alua_cg->default_groups[i]->cg_item; | |
3248 | alua_cg->default_groups[i] = NULL; | |
3249 | config_item_put(item); | |
3250 | } | |
3251 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3252 | alua_cg->default_groups = NULL; |
c66ac9db | 3253 | |
e3d6f909 | 3254 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3255 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3256 | item = &hba_cg->default_groups[i]->cg_item; | |
3257 | hba_cg->default_groups[i] = NULL; | |
3258 | config_item_put(item); | |
3259 | } | |
3260 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3261 | hba_cg->default_groups = NULL; |
3262 | /* | |
3263 | * We expect subsys->su_group.default_groups to be released | |
3264 | * by configfs subsystem provider logic.. | |
3265 | */ | |
3266 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3267 | kfree(subsys->su_group.default_groups); |
3268 | ||
e3d6f909 AG |
3269 | core_alua_free_lu_gp(default_lu_gp); |
3270 | default_lu_gp = NULL; | |
7c2bf6e9 | 3271 | |
6708bb27 | 3272 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3273 | " Infrastructure\n"); |
3274 | ||
c66ac9db NB |
3275 | core_dev_release_virtual_lun0(); |
3276 | rd_module_exit(); | |
e3d6f909 | 3277 | release_se_kmem_caches(); |
c66ac9db NB |
3278 | } |
3279 | ||
3280 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3281 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3282 | MODULE_LICENSE("GPL"); | |
3283 | ||
3284 | module_init(target_core_init_configfs); | |
3285 | module_exit(target_core_exit_configfs); |