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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> | |
c4795fb2 CH |
42 | #include <target/target_core_backend.h> |
43 | #include <target/target_core_fabric.h> | |
c66ac9db NB |
44 | #include <target/target_core_fabric_configfs.h> |
45 | #include <target/target_core_configfs.h> | |
46 | #include <target/configfs_macros.h> | |
47 | ||
e26d99ae | 48 | #include "target_core_internal.h" |
c66ac9db | 49 | #include "target_core_alua.h" |
c66ac9db NB |
50 | #include "target_core_pr.h" |
51 | #include "target_core_rd.h" | |
52 | ||
e3d6f909 AG |
53 | extern struct t10_alua_lu_gp *default_lu_gp; |
54 | ||
d0f474e5 RD |
55 | static LIST_HEAD(g_tf_list); |
56 | static DEFINE_MUTEX(g_tf_lock); | |
c66ac9db NB |
57 | |
58 | struct target_core_configfs_attribute { | |
59 | struct configfs_attribute attr; | |
60 | ssize_t (*show)(void *, char *); | |
61 | ssize_t (*store)(void *, const char *, size_t); | |
62 | }; | |
63 | ||
e3d6f909 AG |
64 | static struct config_group target_core_hbagroup; |
65 | static struct config_group alua_group; | |
66 | static struct config_group alua_lu_gps_group; | |
67 | ||
c66ac9db NB |
68 | static inline struct se_hba * |
69 | item_to_hba(struct config_item *item) | |
70 | { | |
71 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
72 | } | |
73 | ||
74 | /* | |
75 | * Attributes for /sys/kernel/config/target/ | |
76 | */ | |
77 | static ssize_t target_core_attr_show(struct config_item *item, | |
78 | struct configfs_attribute *attr, | |
79 | char *page) | |
80 | { | |
81 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
82 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
83 | utsname()->sysname, utsname()->machine); | |
84 | } | |
85 | ||
86 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
87 | .show_attribute = target_core_attr_show, | |
88 | }; | |
89 | ||
90 | static struct configfs_attribute target_core_item_attr_version = { | |
91 | .ca_owner = THIS_MODULE, | |
92 | .ca_name = "version", | |
93 | .ca_mode = S_IRUGO, | |
94 | }; | |
95 | ||
96 | static struct target_fabric_configfs *target_core_get_fabric( | |
97 | const char *name) | |
98 | { | |
99 | struct target_fabric_configfs *tf; | |
100 | ||
6708bb27 | 101 | if (!name) |
c66ac9db NB |
102 | return NULL; |
103 | ||
104 | mutex_lock(&g_tf_lock); | |
105 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
6708bb27 | 106 | if (!strcmp(tf->tf_name, name)) { |
c66ac9db NB |
107 | atomic_inc(&tf->tf_access_cnt); |
108 | mutex_unlock(&g_tf_lock); | |
109 | return tf; | |
110 | } | |
111 | } | |
112 | mutex_unlock(&g_tf_lock); | |
113 | ||
114 | return NULL; | |
115 | } | |
116 | ||
117 | /* | |
118 | * Called from struct target_core_group_ops->make_group() | |
119 | */ | |
120 | static struct config_group *target_core_register_fabric( | |
121 | struct config_group *group, | |
122 | const char *name) | |
123 | { | |
124 | struct target_fabric_configfs *tf; | |
125 | int ret; | |
126 | ||
6708bb27 | 127 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 128 | " %s\n", group, name); |
c66ac9db NB |
129 | /* |
130 | * Below are some hardcoded request_module() calls to automatically | |
131 | * local fabric modules when the following is called: | |
132 | * | |
133 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME | |
134 | * | |
135 | * Note that this does not limit which TCM fabric module can be | |
136 | * registered, but simply provids auto loading logic for modules with | |
137 | * mkdir(2) system calls with known TCM fabric modules. | |
138 | */ | |
6708bb27 | 139 | if (!strncmp(name, "iscsi", 5)) { |
c66ac9db NB |
140 | /* |
141 | * Automatically load the LIO Target fabric module when the | |
142 | * following is called: | |
143 | * | |
144 | * mkdir -p $CONFIGFS/target/iscsi | |
145 | */ | |
146 | ret = request_module("iscsi_target_mod"); | |
147 | if (ret < 0) { | |
6708bb27 | 148 | pr_err("request_module() failed for" |
c66ac9db NB |
149 | " iscsi_target_mod.ko: %d\n", ret); |
150 | return ERR_PTR(-EINVAL); | |
151 | } | |
6708bb27 | 152 | } else if (!strncmp(name, "loopback", 8)) { |
c66ac9db NB |
153 | /* |
154 | * Automatically load the tcm_loop fabric module when the | |
155 | * following is called: | |
156 | * | |
157 | * mkdir -p $CONFIGFS/target/loopback | |
158 | */ | |
159 | ret = request_module("tcm_loop"); | |
160 | if (ret < 0) { | |
6708bb27 | 161 | pr_err("request_module() failed for" |
c66ac9db NB |
162 | " tcm_loop.ko: %d\n", ret); |
163 | return ERR_PTR(-EINVAL); | |
164 | } | |
165 | } | |
166 | ||
167 | tf = target_core_get_fabric(name); | |
6708bb27 AG |
168 | if (!tf) { |
169 | pr_err("target_core_get_fabric() failed for %s\n", | |
c66ac9db NB |
170 | name); |
171 | return ERR_PTR(-EINVAL); | |
172 | } | |
6708bb27 | 173 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
c66ac9db NB |
174 | " %s\n", tf->tf_name); |
175 | /* | |
176 | * On a successful target_core_get_fabric() look, the returned | |
177 | * struct target_fabric_configfs *tf will contain a usage reference. | |
178 | */ | |
6708bb27 | 179 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
c66ac9db NB |
180 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); |
181 | ||
182 | tf->tf_group.default_groups = tf->tf_default_groups; | |
183 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
184 | tf->tf_group.default_groups[1] = NULL; | |
185 | ||
186 | config_group_init_type_name(&tf->tf_group, name, | |
187 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); | |
188 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", | |
189 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); | |
190 | ||
6708bb27 | 191 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db NB |
192 | " %s\n", tf->tf_group.cg_item.ci_name); |
193 | /* | |
194 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
195 | */ | |
196 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
197 | tf->tf_fabric = &tf->tf_group.cg_item; | |
6708bb27 | 198 | pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" |
c66ac9db NB |
199 | " for %s\n", name); |
200 | ||
201 | return &tf->tf_group; | |
202 | } | |
203 | ||
204 | /* | |
205 | * Called from struct target_core_group_ops->drop_item() | |
206 | */ | |
207 | static void target_core_deregister_fabric( | |
208 | struct config_group *group, | |
209 | struct config_item *item) | |
210 | { | |
211 | struct target_fabric_configfs *tf = container_of( | |
212 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
213 | struct config_group *tf_group; | |
214 | struct config_item *df_item; | |
215 | int i; | |
216 | ||
6708bb27 | 217 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
218 | " tf list\n", config_item_name(item)); |
219 | ||
6708bb27 | 220 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
c66ac9db NB |
221 | " %s\n", tf->tf_name); |
222 | atomic_dec(&tf->tf_access_cnt); | |
223 | ||
6708bb27 | 224 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" |
c66ac9db NB |
225 | " tf->tf_fabric for %s\n", tf->tf_name); |
226 | tf->tf_fabric = NULL; | |
227 | ||
6708bb27 | 228 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
229 | " %s\n", config_item_name(item)); |
230 | ||
231 | tf_group = &tf->tf_group; | |
232 | for (i = 0; tf_group->default_groups[i]; i++) { | |
233 | df_item = &tf_group->default_groups[i]->cg_item; | |
234 | tf_group->default_groups[i] = NULL; | |
235 | config_item_put(df_item); | |
236 | } | |
237 | config_item_put(item); | |
238 | } | |
239 | ||
240 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
241 | .make_group = &target_core_register_fabric, | |
242 | .drop_item = &target_core_deregister_fabric, | |
243 | }; | |
244 | ||
245 | /* | |
246 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
247 | */ | |
248 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
249 | &target_core_item_attr_version, | |
250 | NULL, | |
251 | }; | |
252 | ||
253 | /* | |
254 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
255 | */ | |
256 | static struct config_item_type target_core_fabrics_item = { | |
257 | .ct_item_ops = &target_core_fabric_item_ops, | |
258 | .ct_group_ops = &target_core_fabric_group_ops, | |
259 | .ct_attrs = target_core_fabric_item_attrs, | |
260 | .ct_owner = THIS_MODULE, | |
261 | }; | |
262 | ||
263 | static struct configfs_subsystem target_core_fabrics = { | |
264 | .su_group = { | |
265 | .cg_item = { | |
266 | .ci_namebuf = "target", | |
267 | .ci_type = &target_core_fabrics_item, | |
268 | }, | |
269 | }, | |
270 | }; | |
271 | ||
272 | static struct configfs_subsystem *target_core_subsystem[] = { | |
273 | &target_core_fabrics, | |
274 | NULL, | |
275 | }; | |
276 | ||
277 | /*############################################################################## | |
278 | // Start functions called by external Target Fabrics Modules | |
279 | //############################################################################*/ | |
280 | ||
281 | /* | |
282 | * First function called by fabric modules to: | |
283 | * | |
284 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
285 | * 2) Add struct target_fabric_configfs to g_tf_list | |
286 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
287 | * into target_fabric_configfs_register(). | |
288 | */ | |
289 | struct target_fabric_configfs *target_fabric_configfs_init( | |
290 | struct module *fabric_mod, | |
291 | const char *name) | |
292 | { | |
293 | struct target_fabric_configfs *tf; | |
294 | ||
c66ac9db | 295 | if (!(name)) { |
6708bb27 | 296 | pr_err("Unable to locate passed fabric name\n"); |
e3d6f909 | 297 | return ERR_PTR(-EINVAL); |
c66ac9db | 298 | } |
60d645a4 | 299 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 300 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
c66ac9db | 301 | "_NAME_SIZE\n", name); |
e3d6f909 | 302 | return ERR_PTR(-EINVAL); |
c66ac9db NB |
303 | } |
304 | ||
305 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 306 | if (!tf) |
e3d6f909 | 307 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
308 | |
309 | INIT_LIST_HEAD(&tf->tf_list); | |
310 | atomic_set(&tf->tf_access_cnt, 0); | |
311 | /* | |
312 | * Setup the default generic struct config_item_type's (cits) in | |
313 | * struct target_fabric_configfs->tf_cit_tmpl | |
314 | */ | |
315 | tf->tf_module = fabric_mod; | |
316 | target_fabric_setup_cits(tf); | |
317 | ||
318 | tf->tf_subsys = target_core_subsystem[0]; | |
319 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
320 | ||
321 | mutex_lock(&g_tf_lock); | |
322 | list_add_tail(&tf->tf_list, &g_tf_list); | |
323 | mutex_unlock(&g_tf_lock); | |
324 | ||
6708bb27 | 325 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" |
c66ac9db | 326 | ">>>>>>>>>>>>>>\n"); |
6708bb27 | 327 | pr_debug("Initialized struct target_fabric_configfs: %p for" |
c66ac9db NB |
328 | " %s\n", tf, tf->tf_name); |
329 | return tf; | |
330 | } | |
331 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
332 | ||
333 | /* | |
334 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
335 | */ | |
336 | void target_fabric_configfs_free( | |
337 | struct target_fabric_configfs *tf) | |
338 | { | |
339 | mutex_lock(&g_tf_lock); | |
340 | list_del(&tf->tf_list); | |
341 | mutex_unlock(&g_tf_lock); | |
342 | ||
343 | kfree(tf); | |
344 | } | |
345 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
346 | ||
347 | /* | |
348 | * Perform a sanity check of the passed tf->tf_ops before completing | |
349 | * TCM fabric module registration. | |
350 | */ | |
351 | static int target_fabric_tf_ops_check( | |
352 | struct target_fabric_configfs *tf) | |
353 | { | |
354 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
355 | ||
6708bb27 AG |
356 | if (!tfo->get_fabric_name) { |
357 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
358 | return -EINVAL; |
359 | } | |
6708bb27 AG |
360 | if (!tfo->get_fabric_proto_ident) { |
361 | pr_err("Missing tfo->get_fabric_proto_ident()\n"); | |
c66ac9db NB |
362 | return -EINVAL; |
363 | } | |
6708bb27 AG |
364 | if (!tfo->tpg_get_wwn) { |
365 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
366 | return -EINVAL; |
367 | } | |
6708bb27 AG |
368 | if (!tfo->tpg_get_tag) { |
369 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
370 | return -EINVAL; |
371 | } | |
6708bb27 AG |
372 | if (!tfo->tpg_get_default_depth) { |
373 | pr_err("Missing tfo->tpg_get_default_depth()\n"); | |
c66ac9db NB |
374 | return -EINVAL; |
375 | } | |
6708bb27 AG |
376 | if (!tfo->tpg_get_pr_transport_id) { |
377 | pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); | |
c66ac9db NB |
378 | return -EINVAL; |
379 | } | |
6708bb27 AG |
380 | if (!tfo->tpg_get_pr_transport_id_len) { |
381 | pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
c66ac9db NB |
382 | return -EINVAL; |
383 | } | |
6708bb27 AG |
384 | if (!tfo->tpg_check_demo_mode) { |
385 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
386 | return -EINVAL; |
387 | } | |
6708bb27 AG |
388 | if (!tfo->tpg_check_demo_mode_cache) { |
389 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
390 | return -EINVAL; |
391 | } | |
6708bb27 AG |
392 | if (!tfo->tpg_check_demo_mode_write_protect) { |
393 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
394 | return -EINVAL; |
395 | } | |
6708bb27 AG |
396 | if (!tfo->tpg_check_prod_mode_write_protect) { |
397 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
398 | return -EINVAL; |
399 | } | |
6708bb27 AG |
400 | if (!tfo->tpg_alloc_fabric_acl) { |
401 | pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); | |
c66ac9db NB |
402 | return -EINVAL; |
403 | } | |
6708bb27 AG |
404 | if (!tfo->tpg_release_fabric_acl) { |
405 | pr_err("Missing tfo->tpg_release_fabric_acl()\n"); | |
c66ac9db NB |
406 | return -EINVAL; |
407 | } | |
6708bb27 AG |
408 | if (!tfo->tpg_get_inst_index) { |
409 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
410 | return -EINVAL; |
411 | } | |
35462975 | 412 | if (!tfo->release_cmd) { |
6708bb27 | 413 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
414 | return -EINVAL; |
415 | } | |
6708bb27 AG |
416 | if (!tfo->shutdown_session) { |
417 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
418 | return -EINVAL; |
419 | } | |
6708bb27 AG |
420 | if (!tfo->close_session) { |
421 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
422 | return -EINVAL; |
423 | } | |
6708bb27 AG |
424 | if (!tfo->sess_get_index) { |
425 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
426 | return -EINVAL; |
427 | } | |
6708bb27 AG |
428 | if (!tfo->write_pending) { |
429 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
430 | return -EINVAL; |
431 | } | |
6708bb27 AG |
432 | if (!tfo->write_pending_status) { |
433 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
434 | return -EINVAL; |
435 | } | |
6708bb27 AG |
436 | if (!tfo->set_default_node_attributes) { |
437 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
438 | return -EINVAL; |
439 | } | |
6708bb27 AG |
440 | if (!tfo->get_task_tag) { |
441 | pr_err("Missing tfo->get_task_tag()\n"); | |
c66ac9db NB |
442 | return -EINVAL; |
443 | } | |
6708bb27 AG |
444 | if (!tfo->get_cmd_state) { |
445 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
446 | return -EINVAL; |
447 | } | |
6708bb27 AG |
448 | if (!tfo->queue_data_in) { |
449 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
450 | return -EINVAL; |
451 | } | |
6708bb27 AG |
452 | if (!tfo->queue_status) { |
453 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
454 | return -EINVAL; |
455 | } | |
6708bb27 AG |
456 | if (!tfo->queue_tm_rsp) { |
457 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
458 | return -EINVAL; |
459 | } | |
6708bb27 AG |
460 | if (!tfo->set_fabric_sense_len) { |
461 | pr_err("Missing tfo->set_fabric_sense_len()\n"); | |
c66ac9db NB |
462 | return -EINVAL; |
463 | } | |
6708bb27 AG |
464 | if (!tfo->get_fabric_sense_len) { |
465 | pr_err("Missing tfo->get_fabric_sense_len()\n"); | |
c66ac9db NB |
466 | return -EINVAL; |
467 | } | |
c66ac9db NB |
468 | /* |
469 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
470 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
471 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
472 | */ | |
6708bb27 AG |
473 | if (!tfo->fabric_make_wwn) { |
474 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
475 | return -EINVAL; |
476 | } | |
6708bb27 AG |
477 | if (!tfo->fabric_drop_wwn) { |
478 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
479 | return -EINVAL; |
480 | } | |
6708bb27 AG |
481 | if (!tfo->fabric_make_tpg) { |
482 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
483 | return -EINVAL; |
484 | } | |
6708bb27 AG |
485 | if (!tfo->fabric_drop_tpg) { |
486 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
487 | return -EINVAL; |
488 | } | |
489 | ||
490 | return 0; | |
491 | } | |
492 | ||
493 | /* | |
494 | * Called 2nd from fabric module with returned parameter of | |
495 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
496 | * | |
497 | * Upon a successful registration, the new fabric's struct config_item is | |
498 | * return. Also, a pointer to this struct is set in the passed | |
499 | * struct target_fabric_configfs. | |
500 | */ | |
501 | int target_fabric_configfs_register( | |
502 | struct target_fabric_configfs *tf) | |
503 | { | |
c66ac9db NB |
504 | int ret; |
505 | ||
6708bb27 AG |
506 | if (!tf) { |
507 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
508 | " pointer\n"); |
509 | return -EINVAL; | |
510 | } | |
6708bb27 AG |
511 | if (!tf->tf_subsys) { |
512 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
513 | " pointer\n"); |
514 | return -EINVAL; | |
515 | } | |
c66ac9db NB |
516 | ret = target_fabric_tf_ops_check(tf); |
517 | if (ret < 0) | |
518 | return ret; | |
519 | ||
6708bb27 | 520 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
521 | ">>>>>>>>>>\n"); |
522 | return 0; | |
523 | } | |
524 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
525 | ||
526 | void target_fabric_configfs_deregister( | |
527 | struct target_fabric_configfs *tf) | |
528 | { | |
c66ac9db NB |
529 | struct configfs_subsystem *su; |
530 | ||
6708bb27 AG |
531 | if (!tf) { |
532 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
533 | "configfs\n"); |
534 | return; | |
535 | } | |
536 | su = tf->tf_subsys; | |
6708bb27 AG |
537 | if (!su) { |
538 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
539 | " pointer\n"); |
540 | return; | |
541 | } | |
6708bb27 | 542 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
543 | ">>>>>>>>>>>>\n"); |
544 | mutex_lock(&g_tf_lock); | |
545 | if (atomic_read(&tf->tf_access_cnt)) { | |
546 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 547 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
548 | tf->tf_name); |
549 | BUG(); | |
550 | } | |
551 | list_del(&tf->tf_list); | |
552 | mutex_unlock(&g_tf_lock); | |
553 | ||
6708bb27 | 554 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
555 | " %s\n", tf->tf_name); |
556 | tf->tf_module = NULL; | |
557 | tf->tf_subsys = NULL; | |
558 | kfree(tf); | |
559 | ||
6708bb27 | 560 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 561 | ">>>>>\n"); |
c66ac9db NB |
562 | } |
563 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
564 | ||
565 | /*############################################################################## | |
566 | // Stop functions called by external Target Fabrics Modules | |
567 | //############################################################################*/ | |
568 | ||
569 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
570 | ||
571 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
572 | static ssize_t target_core_dev_show_attr_##_name( \ | |
573 | struct se_dev_attrib *da, \ | |
574 | char *page) \ | |
575 | { \ | |
576 | struct se_device *dev; \ | |
577 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
578 | ssize_t rb; \ | |
579 | \ | |
580 | spin_lock(&se_dev->se_dev_lock); \ | |
581 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 582 | if (!dev) { \ |
c66ac9db NB |
583 | spin_unlock(&se_dev->se_dev_lock); \ |
584 | return -ENODEV; \ | |
585 | } \ | |
e3d6f909 AG |
586 | rb = snprintf(page, PAGE_SIZE, "%u\n", \ |
587 | (u32)dev->se_sub_dev->se_dev_attrib._name); \ | |
c66ac9db NB |
588 | spin_unlock(&se_dev->se_dev_lock); \ |
589 | \ | |
590 | return rb; \ | |
591 | } | |
592 | ||
593 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
594 | static ssize_t target_core_dev_store_attr_##_name( \ | |
595 | struct se_dev_attrib *da, \ | |
596 | const char *page, \ | |
597 | size_t count) \ | |
598 | { \ | |
599 | struct se_device *dev; \ | |
600 | struct se_subsystem_dev *se_dev = da->da_sub_dev; \ | |
601 | unsigned long val; \ | |
602 | int ret; \ | |
603 | \ | |
604 | spin_lock(&se_dev->se_dev_lock); \ | |
605 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 606 | if (!dev) { \ |
c66ac9db NB |
607 | spin_unlock(&se_dev->se_dev_lock); \ |
608 | return -ENODEV; \ | |
609 | } \ | |
610 | ret = strict_strtoul(page, 0, &val); \ | |
611 | if (ret < 0) { \ | |
612 | spin_unlock(&se_dev->se_dev_lock); \ | |
6708bb27 | 613 | pr_err("strict_strtoul() failed with" \ |
c66ac9db NB |
614 | " ret: %d\n", ret); \ |
615 | return -EINVAL; \ | |
616 | } \ | |
617 | ret = se_dev_set_##_name(dev, (u32)val); \ | |
618 | spin_unlock(&se_dev->se_dev_lock); \ | |
619 | \ | |
620 | return (!ret) ? count : -EINVAL; \ | |
621 | } | |
622 | ||
623 | #define DEF_DEV_ATTRIB(_name) \ | |
624 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
625 | DEF_DEV_ATTRIB_STORE(_name); | |
626 | ||
627 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
628 | DEF_DEV_ATTRIB_SHOW(_name); | |
629 | ||
630 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
631 | #define SE_DEV_ATTR(_name, _mode) \ | |
632 | static struct target_core_dev_attrib_attribute \ | |
633 | target_core_dev_attrib_##_name = \ | |
634 | __CONFIGFS_EATTR(_name, _mode, \ | |
635 | target_core_dev_show_attr_##_name, \ | |
636 | target_core_dev_store_attr_##_name); | |
637 | ||
638 | #define SE_DEV_ATTR_RO(_name); \ | |
639 | static struct target_core_dev_attrib_attribute \ | |
640 | target_core_dev_attrib_##_name = \ | |
641 | __CONFIGFS_EATTR_RO(_name, \ | |
642 | target_core_dev_show_attr_##_name); | |
643 | ||
644 | DEF_DEV_ATTRIB(emulate_dpo); | |
645 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
646 | ||
647 | DEF_DEV_ATTRIB(emulate_fua_write); | |
648 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
649 | ||
650 | DEF_DEV_ATTRIB(emulate_fua_read); | |
651 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
652 | ||
653 | DEF_DEV_ATTRIB(emulate_write_cache); | |
654 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
655 | ||
656 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
657 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
658 | ||
659 | DEF_DEV_ATTRIB(emulate_tas); | |
660 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
661 | ||
662 | DEF_DEV_ATTRIB(emulate_tpu); | |
663 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
664 | ||
665 | DEF_DEV_ATTRIB(emulate_tpws); | |
666 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
667 | ||
668 | DEF_DEV_ATTRIB(enforce_pr_isids); | |
669 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
670 | ||
e22a7f07 RD |
671 | DEF_DEV_ATTRIB(is_nonrot); |
672 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); | |
673 | ||
5de619a3 NB |
674 | DEF_DEV_ATTRIB(emulate_rest_reord); |
675 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); | |
676 | ||
c66ac9db NB |
677 | DEF_DEV_ATTRIB_RO(hw_block_size); |
678 | SE_DEV_ATTR_RO(hw_block_size); | |
679 | ||
680 | DEF_DEV_ATTRIB(block_size); | |
681 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
682 | ||
683 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
684 | SE_DEV_ATTR_RO(hw_max_sectors); | |
685 | ||
686 | DEF_DEV_ATTRIB(max_sectors); | |
687 | SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); | |
688 | ||
015487b8 RD |
689 | DEF_DEV_ATTRIB(fabric_max_sectors); |
690 | SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); | |
691 | ||
c66ac9db NB |
692 | DEF_DEV_ATTRIB(optimal_sectors); |
693 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
694 | ||
695 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
696 | SE_DEV_ATTR_RO(hw_queue_depth); | |
697 | ||
698 | DEF_DEV_ATTRIB(queue_depth); | |
699 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
700 | ||
c66ac9db NB |
701 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
702 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
703 | ||
704 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
705 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
706 | ||
707 | DEF_DEV_ATTRIB(unmap_granularity); | |
708 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
709 | ||
710 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
711 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
712 | ||
713 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); | |
714 | ||
715 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
716 | &target_core_dev_attrib_emulate_dpo.attr, | |
717 | &target_core_dev_attrib_emulate_fua_write.attr, | |
718 | &target_core_dev_attrib_emulate_fua_read.attr, | |
719 | &target_core_dev_attrib_emulate_write_cache.attr, | |
720 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
721 | &target_core_dev_attrib_emulate_tas.attr, | |
722 | &target_core_dev_attrib_emulate_tpu.attr, | |
723 | &target_core_dev_attrib_emulate_tpws.attr, | |
724 | &target_core_dev_attrib_enforce_pr_isids.attr, | |
e22a7f07 | 725 | &target_core_dev_attrib_is_nonrot.attr, |
5de619a3 | 726 | &target_core_dev_attrib_emulate_rest_reord.attr, |
c66ac9db NB |
727 | &target_core_dev_attrib_hw_block_size.attr, |
728 | &target_core_dev_attrib_block_size.attr, | |
729 | &target_core_dev_attrib_hw_max_sectors.attr, | |
730 | &target_core_dev_attrib_max_sectors.attr, | |
015487b8 | 731 | &target_core_dev_attrib_fabric_max_sectors.attr, |
c66ac9db NB |
732 | &target_core_dev_attrib_optimal_sectors.attr, |
733 | &target_core_dev_attrib_hw_queue_depth.attr, | |
734 | &target_core_dev_attrib_queue_depth.attr, | |
c66ac9db NB |
735 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
736 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
737 | &target_core_dev_attrib_unmap_granularity.attr, | |
738 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
739 | NULL, | |
740 | }; | |
741 | ||
742 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
743 | .show_attribute = target_core_dev_attrib_attr_show, | |
744 | .store_attribute = target_core_dev_attrib_attr_store, | |
745 | }; | |
746 | ||
747 | static struct config_item_type target_core_dev_attrib_cit = { | |
748 | .ct_item_ops = &target_core_dev_attrib_ops, | |
749 | .ct_attrs = target_core_dev_attrib_attrs, | |
750 | .ct_owner = THIS_MODULE, | |
751 | }; | |
752 | ||
753 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
754 | ||
755 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
756 | ||
757 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
758 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
759 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
760 | __CONFIGFS_EATTR(_name, _mode, \ | |
761 | target_core_dev_wwn_show_attr_##_name, \ | |
762 | target_core_dev_wwn_store_attr_##_name); | |
763 | ||
764 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
765 | do { \ | |
766 | static struct target_core_dev_wwn_attribute \ | |
767 | target_core_dev_wwn_##_name = \ | |
768 | __CONFIGFS_EATTR_RO(_name, \ | |
769 | target_core_dev_wwn_show_attr_##_name); \ | |
770 | } while (0); | |
771 | ||
772 | /* | |
773 | * VPD page 0x80 Unit serial | |
774 | */ | |
775 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
776 | struct t10_wwn *t10_wwn, | |
777 | char *page) | |
778 | { | |
779 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
780 | struct se_device *dev; | |
781 | ||
782 | dev = se_dev->se_dev_ptr; | |
6708bb27 | 783 | if (!dev) |
c66ac9db NB |
784 | return -ENODEV; |
785 | ||
786 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", | |
787 | &t10_wwn->unit_serial[0]); | |
788 | } | |
789 | ||
790 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
791 | struct t10_wwn *t10_wwn, | |
792 | const char *page, | |
793 | size_t count) | |
794 | { | |
795 | struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; | |
796 | struct se_device *dev; | |
797 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; | |
798 | ||
799 | /* | |
800 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
801 | * from the struct scsi_device level firmware, do not allow | |
802 | * VPD Unit Serial to be emulated. | |
803 | * | |
804 | * Note this struct scsi_device could also be emulating VPD | |
805 | * information from its drivers/scsi LLD. But for now we assume | |
806 | * it is doing 'the right thing' wrt a world wide unique | |
807 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
808 | */ | |
809 | if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { | |
6708bb27 | 810 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
811 | " Unit Serial, ignoring request\n"); |
812 | return -EOPNOTSUPP; | |
813 | } | |
814 | ||
60d645a4 | 815 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 816 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
817 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
818 | return -EOVERFLOW; | |
819 | } | |
820 | /* | |
821 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
822 | * do exist, fail here as changing this information on the fly | |
823 | * (underneath the initiator side OS dependent multipath code) | |
824 | * could cause negative effects. | |
825 | */ | |
826 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 827 | if (dev) { |
c66ac9db | 828 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { |
6708bb27 | 829 | pr_err("Unable to set VPD Unit Serial while" |
c66ac9db NB |
830 | " active %d $FABRIC_MOD exports exist\n", |
831 | atomic_read(&dev->dev_export_obj.obj_access_count)); | |
832 | return -EINVAL; | |
833 | } | |
834 | } | |
835 | /* | |
836 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
837 | * | |
838 | * Also, strip any newline added from the userspace | |
839 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
840 | */ | |
841 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
842 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
843 | snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, | |
844 | "%s", strstrip(buf)); | |
845 | su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; | |
846 | ||
6708bb27 | 847 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
c66ac9db NB |
848 | " %s\n", su_dev->t10_wwn.unit_serial); |
849 | ||
850 | return count; | |
851 | } | |
852 | ||
853 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
854 | ||
855 | /* | |
856 | * VPD page 0x83 Protocol Identifier | |
857 | */ | |
858 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
859 | struct t10_wwn *t10_wwn, | |
860 | char *page) | |
861 | { | |
862 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; | |
863 | struct se_device *dev; | |
864 | struct t10_vpd *vpd; | |
865 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
866 | ssize_t len = 0; | |
867 | ||
868 | dev = se_dev->se_dev_ptr; | |
6708bb27 | 869 | if (!dev) |
c66ac9db NB |
870 | return -ENODEV; |
871 | ||
872 | memset(buf, 0, VPD_TMP_BUF_SIZE); | |
873 | ||
874 | spin_lock(&t10_wwn->t10_vpd_lock); | |
875 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 876 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
877 | continue; |
878 | ||
879 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
880 | ||
6708bb27 | 881 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
882 | break; |
883 | ||
884 | len += sprintf(page+len, "%s", buf); | |
885 | } | |
886 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
887 | ||
888 | return len; | |
889 | } | |
890 | ||
891 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
892 | struct t10_wwn *t10_wwn, | |
893 | const char *page, | |
894 | size_t count) | |
895 | { | |
896 | return -ENOSYS; | |
897 | } | |
898 | ||
899 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
900 | ||
901 | /* | |
902 | * Generic wrapper for dumping VPD identifiers by association. | |
903 | */ | |
904 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
905 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
906 | struct t10_wwn *t10_wwn, \ | |
907 | char *page) \ | |
908 | { \ | |
909 | struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ | |
910 | struct se_device *dev; \ | |
911 | struct t10_vpd *vpd; \ | |
912 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
913 | ssize_t len = 0; \ | |
914 | \ | |
915 | dev = se_dev->se_dev_ptr; \ | |
6708bb27 | 916 | if (!dev) \ |
c66ac9db NB |
917 | return -ENODEV; \ |
918 | \ | |
919 | spin_lock(&t10_wwn->t10_vpd_lock); \ | |
920 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
921 | if (vpd->association != _assoc) \ | |
922 | continue; \ | |
923 | \ | |
924 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
925 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 926 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
927 | break; \ |
928 | len += sprintf(page+len, "%s", buf); \ | |
929 | \ | |
930 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
931 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 932 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
933 | break; \ |
934 | len += sprintf(page+len, "%s", buf); \ | |
935 | \ | |
936 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
937 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 938 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
939 | break; \ |
940 | len += sprintf(page+len, "%s", buf); \ | |
941 | } \ | |
942 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
943 | \ | |
944 | return len; \ | |
945 | } | |
946 | ||
947 | /* | |
163cd5fa | 948 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
949 | */ |
950 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
951 | ||
952 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
953 | struct t10_wwn *t10_wwn, | |
954 | const char *page, | |
955 | size_t count) | |
956 | { | |
957 | return -ENOSYS; | |
958 | } | |
959 | ||
960 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
961 | ||
962 | /* | |
963 | * VPD page 0x83 Association: Target Port | |
964 | */ | |
965 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
966 | ||
967 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
968 | struct t10_wwn *t10_wwn, | |
969 | const char *page, | |
970 | size_t count) | |
971 | { | |
972 | return -ENOSYS; | |
973 | } | |
974 | ||
975 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
976 | ||
977 | /* | |
978 | * VPD page 0x83 Association: SCSI Target Device | |
979 | */ | |
980 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
981 | ||
982 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
983 | struct t10_wwn *t10_wwn, | |
984 | const char *page, | |
985 | size_t count) | |
986 | { | |
987 | return -ENOSYS; | |
988 | } | |
989 | ||
990 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
991 | ||
992 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
993 | ||
994 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
995 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
996 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
997 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
998 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
999 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
1000 | NULL, | |
1001 | }; | |
1002 | ||
1003 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
1004 | .show_attribute = target_core_dev_wwn_attr_show, | |
1005 | .store_attribute = target_core_dev_wwn_attr_store, | |
1006 | }; | |
1007 | ||
1008 | static struct config_item_type target_core_dev_wwn_cit = { | |
1009 | .ct_item_ops = &target_core_dev_wwn_ops, | |
1010 | .ct_attrs = target_core_dev_wwn_attrs, | |
1011 | .ct_owner = THIS_MODULE, | |
1012 | }; | |
1013 | ||
1014 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
1015 | ||
1016 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
1017 | ||
1018 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); | |
1019 | #define SE_DEV_PR_ATTR(_name, _mode) \ | |
1020 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1021 | __CONFIGFS_EATTR(_name, _mode, \ | |
1022 | target_core_dev_pr_show_attr_##_name, \ | |
1023 | target_core_dev_pr_store_attr_##_name); | |
1024 | ||
1025 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
1026 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
1027 | __CONFIGFS_EATTR_RO(_name, \ | |
1028 | target_core_dev_pr_show_attr_##_name); | |
1029 | ||
1030 | /* | |
1031 | * res_holder | |
1032 | */ | |
1033 | static ssize_t target_core_dev_pr_show_spc3_res( | |
1034 | struct se_device *dev, | |
1035 | char *page, | |
1036 | ssize_t *len) | |
1037 | { | |
1038 | struct se_node_acl *se_nacl; | |
1039 | struct t10_pr_registration *pr_reg; | |
1040 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1041 | int prf_isid; | |
1042 | ||
1043 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1044 | ||
1045 | spin_lock(&dev->dev_reservation_lock); | |
1046 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1047 | if (!pr_reg) { |
c66ac9db NB |
1048 | *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); |
1049 | spin_unlock(&dev->dev_reservation_lock); | |
1050 | return *len; | |
1051 | } | |
1052 | se_nacl = pr_reg->pr_reg_nacl; | |
1053 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1054 | PR_REG_ISID_ID_LEN); | |
1055 | ||
1056 | *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", | |
e3d6f909 | 1057 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1058 | se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); |
1059 | spin_unlock(&dev->dev_reservation_lock); | |
1060 | ||
1061 | return *len; | |
1062 | } | |
1063 | ||
1064 | static ssize_t target_core_dev_pr_show_spc2_res( | |
1065 | struct se_device *dev, | |
1066 | char *page, | |
1067 | ssize_t *len) | |
1068 | { | |
1069 | struct se_node_acl *se_nacl; | |
1070 | ||
1071 | spin_lock(&dev->dev_reservation_lock); | |
1072 | se_nacl = dev->dev_reserved_node_acl; | |
6708bb27 | 1073 | if (!se_nacl) { |
c66ac9db NB |
1074 | *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); |
1075 | spin_unlock(&dev->dev_reservation_lock); | |
1076 | return *len; | |
1077 | } | |
1078 | *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", | |
e3d6f909 | 1079 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
c66ac9db NB |
1080 | se_nacl->initiatorname); |
1081 | spin_unlock(&dev->dev_reservation_lock); | |
1082 | ||
1083 | return *len; | |
1084 | } | |
1085 | ||
1086 | static ssize_t target_core_dev_pr_show_attr_res_holder( | |
1087 | struct se_subsystem_dev *su_dev, | |
1088 | char *page) | |
1089 | { | |
1090 | ssize_t len = 0; | |
1091 | ||
6708bb27 | 1092 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1093 | return -ENODEV; |
1094 | ||
e3d6f909 | 1095 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1096 | case SPC3_PERSISTENT_RESERVATIONS: |
1097 | target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, | |
1098 | page, &len); | |
1099 | break; | |
1100 | case SPC2_RESERVATIONS: | |
1101 | target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, | |
1102 | page, &len); | |
1103 | break; | |
1104 | case SPC_PASSTHROUGH: | |
1105 | len += sprintf(page+len, "Passthrough\n"); | |
1106 | break; | |
1107 | default: | |
1108 | len += sprintf(page+len, "Unknown\n"); | |
1109 | break; | |
1110 | } | |
1111 | ||
1112 | return len; | |
1113 | } | |
1114 | ||
1115 | SE_DEV_PR_ATTR_RO(res_holder); | |
1116 | ||
1117 | /* | |
1118 | * res_pr_all_tgt_pts | |
1119 | */ | |
1120 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( | |
1121 | struct se_subsystem_dev *su_dev, | |
1122 | char *page) | |
1123 | { | |
1124 | struct se_device *dev; | |
1125 | struct t10_pr_registration *pr_reg; | |
1126 | ssize_t len = 0; | |
1127 | ||
1128 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1129 | if (!dev) |
c66ac9db NB |
1130 | return -ENODEV; |
1131 | ||
e3d6f909 | 1132 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1133 | return len; |
1134 | ||
1135 | spin_lock(&dev->dev_reservation_lock); | |
1136 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1137 | if (!pr_reg) { |
c66ac9db NB |
1138 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1139 | spin_unlock(&dev->dev_reservation_lock); | |
1140 | return len; | |
1141 | } | |
1142 | /* | |
1143 | * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 | |
1144 | * Basic PERSISTENT RESERVER OUT parameter list, page 290 | |
1145 | */ | |
1146 | if (pr_reg->pr_reg_all_tg_pt) | |
1147 | len = sprintf(page, "SPC-3 Reservation: All Target" | |
1148 | " Ports registration\n"); | |
1149 | else | |
1150 | len = sprintf(page, "SPC-3 Reservation: Single" | |
1151 | " Target Port registration\n"); | |
1152 | spin_unlock(&dev->dev_reservation_lock); | |
1153 | ||
1154 | return len; | |
1155 | } | |
1156 | ||
1157 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1158 | ||
1159 | /* | |
1160 | * res_pr_generation | |
1161 | */ | |
1162 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( | |
1163 | struct se_subsystem_dev *su_dev, | |
1164 | char *page) | |
1165 | { | |
6708bb27 | 1166 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1167 | return -ENODEV; |
1168 | ||
e3d6f909 | 1169 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1170 | return 0; |
1171 | ||
e3d6f909 | 1172 | return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation); |
c66ac9db NB |
1173 | } |
1174 | ||
1175 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1176 | ||
1177 | /* | |
1178 | * res_pr_holder_tg_port | |
1179 | */ | |
1180 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
1181 | struct se_subsystem_dev *su_dev, | |
1182 | char *page) | |
1183 | { | |
1184 | struct se_device *dev; | |
1185 | struct se_node_acl *se_nacl; | |
1186 | struct se_lun *lun; | |
1187 | struct se_portal_group *se_tpg; | |
1188 | struct t10_pr_registration *pr_reg; | |
1189 | struct target_core_fabric_ops *tfo; | |
1190 | ssize_t len = 0; | |
1191 | ||
1192 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1193 | if (!dev) |
c66ac9db NB |
1194 | return -ENODEV; |
1195 | ||
e3d6f909 | 1196 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1197 | return len; |
1198 | ||
1199 | spin_lock(&dev->dev_reservation_lock); | |
1200 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1201 | if (!pr_reg) { |
c66ac9db NB |
1202 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1203 | spin_unlock(&dev->dev_reservation_lock); | |
1204 | return len; | |
1205 | } | |
1206 | se_nacl = pr_reg->pr_reg_nacl; | |
1207 | se_tpg = se_nacl->se_tpg; | |
1208 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1209 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1210 | |
1211 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1212 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1213 | tfo->tpg_get_wwn(se_tpg)); | |
1214 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
1215 | " Identifer Tag: %hu %s Portal Group Tag: %hu" | |
1216 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, | |
1217 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1218 | tfo->get_fabric_name(), lun->unpacked_lun); | |
1219 | spin_unlock(&dev->dev_reservation_lock); | |
1220 | ||
1221 | return len; | |
1222 | } | |
1223 | ||
1224 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1225 | ||
1226 | /* | |
1227 | * res_pr_registered_i_pts | |
1228 | */ | |
1229 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( | |
1230 | struct se_subsystem_dev *su_dev, | |
1231 | char *page) | |
1232 | { | |
1233 | struct target_core_fabric_ops *tfo; | |
1234 | struct t10_pr_registration *pr_reg; | |
1235 | unsigned char buf[384]; | |
1236 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1237 | ssize_t len = 0; | |
1238 | int reg_count = 0, prf_isid; | |
1239 | ||
6708bb27 | 1240 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1241 | return -ENODEV; |
1242 | ||
e3d6f909 | 1243 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1244 | return len; |
1245 | ||
1246 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); | |
1247 | ||
e3d6f909 AG |
1248 | spin_lock(&su_dev->t10_pr.registration_lock); |
1249 | list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, | |
c66ac9db NB |
1250 | pr_reg_list) { |
1251 | ||
1252 | memset(buf, 0, 384); | |
1253 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1254 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
1255 | prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], | |
1256 | PR_REG_ISID_ID_LEN); | |
1257 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1258 | tfo->get_fabric_name(), | |
1259 | pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? | |
1260 | &i_buf[0] : "", pr_reg->pr_res_key, | |
1261 | pr_reg->pr_res_generation); | |
1262 | ||
6708bb27 | 1263 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1264 | break; |
1265 | ||
1266 | len += sprintf(page+len, "%s", buf); | |
1267 | reg_count++; | |
1268 | } | |
e3d6f909 | 1269 | spin_unlock(&su_dev->t10_pr.registration_lock); |
c66ac9db | 1270 | |
6708bb27 | 1271 | if (!reg_count) |
c66ac9db NB |
1272 | len += sprintf(page+len, "None\n"); |
1273 | ||
1274 | return len; | |
1275 | } | |
1276 | ||
1277 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1278 | ||
1279 | /* | |
1280 | * res_pr_type | |
1281 | */ | |
1282 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( | |
1283 | struct se_subsystem_dev *su_dev, | |
1284 | char *page) | |
1285 | { | |
1286 | struct se_device *dev; | |
1287 | struct t10_pr_registration *pr_reg; | |
1288 | ssize_t len = 0; | |
1289 | ||
1290 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1291 | if (!dev) |
c66ac9db NB |
1292 | return -ENODEV; |
1293 | ||
e3d6f909 | 1294 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1295 | return len; |
1296 | ||
1297 | spin_lock(&dev->dev_reservation_lock); | |
1298 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1299 | if (!pr_reg) { |
c66ac9db NB |
1300 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
1301 | spin_unlock(&dev->dev_reservation_lock); | |
1302 | return len; | |
1303 | } | |
1304 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1305 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1306 | spin_unlock(&dev->dev_reservation_lock); | |
1307 | ||
1308 | return len; | |
1309 | } | |
1310 | ||
1311 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1312 | ||
1313 | /* | |
1314 | * res_type | |
1315 | */ | |
1316 | static ssize_t target_core_dev_pr_show_attr_res_type( | |
1317 | struct se_subsystem_dev *su_dev, | |
1318 | char *page) | |
1319 | { | |
1320 | ssize_t len = 0; | |
1321 | ||
6708bb27 | 1322 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1323 | return -ENODEV; |
1324 | ||
e3d6f909 | 1325 | switch (su_dev->t10_pr.res_type) { |
c66ac9db NB |
1326 | case SPC3_PERSISTENT_RESERVATIONS: |
1327 | len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
1328 | break; | |
1329 | case SPC2_RESERVATIONS: | |
1330 | len = sprintf(page, "SPC2_RESERVATIONS\n"); | |
1331 | break; | |
1332 | case SPC_PASSTHROUGH: | |
1333 | len = sprintf(page, "SPC_PASSTHROUGH\n"); | |
1334 | break; | |
1335 | default: | |
1336 | len = sprintf(page, "UNKNOWN\n"); | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | return len; | |
1341 | } | |
1342 | ||
1343 | SE_DEV_PR_ATTR_RO(res_type); | |
1344 | ||
1345 | /* | |
1346 | * res_aptpl_active | |
1347 | */ | |
1348 | ||
1349 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( | |
1350 | struct se_subsystem_dev *su_dev, | |
1351 | char *page) | |
1352 | { | |
6708bb27 | 1353 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1354 | return -ENODEV; |
1355 | ||
e3d6f909 | 1356 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1357 | return 0; |
1358 | ||
1359 | return sprintf(page, "APTPL Bit Status: %s\n", | |
e3d6f909 | 1360 | (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1361 | } |
1362 | ||
1363 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1364 | ||
1365 | /* | |
1366 | * res_aptpl_metadata | |
1367 | */ | |
1368 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
1369 | struct se_subsystem_dev *su_dev, | |
1370 | char *page) | |
1371 | { | |
6708bb27 | 1372 | if (!su_dev->se_dev_ptr) |
c66ac9db NB |
1373 | return -ENODEV; |
1374 | ||
e3d6f909 | 1375 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1376 | return 0; |
1377 | ||
1378 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1379 | } | |
1380 | ||
1381 | enum { | |
1382 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1383 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1384 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1385 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1386 | }; | |
1387 | ||
1388 | static match_table_t tokens = { | |
1389 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1390 | {Opt_initiator_node, "initiator_node=%s"}, | |
1391 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1392 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1393 | {Opt_res_holder, "res_holder=%d"}, | |
1394 | {Opt_res_type, "res_type=%d"}, | |
1395 | {Opt_res_scope, "res_scope=%d"}, | |
1396 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1397 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1398 | {Opt_target_fabric, "target_fabric=%s"}, | |
1399 | {Opt_target_node, "target_node=%s"}, | |
1400 | {Opt_tpgt, "tpgt=%d"}, | |
1401 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1402 | {Opt_target_lun, "target_lun=%d"}, | |
1403 | {Opt_err, NULL} | |
1404 | }; | |
1405 | ||
1406 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
1407 | struct se_subsystem_dev *su_dev, | |
1408 | const char *page, | |
1409 | size_t count) | |
1410 | { | |
1411 | struct se_device *dev; | |
6d180253 JJ |
1412 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1413 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1414 | char *orig, *ptr, *arg_p, *opts; |
1415 | substring_t args[MAX_OPT_ARGS]; | |
1416 | unsigned long long tmp_ll; | |
1417 | u64 sa_res_key = 0; | |
1418 | u32 mapped_lun = 0, target_lun = 0; | |
1419 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1420 | u16 port_rpti = 0, tpgt = 0; | |
1421 | u8 type = 0, scope; | |
1422 | ||
1423 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1424 | if (!dev) |
c66ac9db NB |
1425 | return -ENODEV; |
1426 | ||
e3d6f909 | 1427 | if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) |
c66ac9db NB |
1428 | return 0; |
1429 | ||
1430 | if (atomic_read(&dev->dev_export_obj.obj_access_count)) { | |
6708bb27 | 1431 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1432 | " active fabric exports exist\n"); |
1433 | return -EINVAL; | |
1434 | } | |
1435 | ||
1436 | opts = kstrdup(page, GFP_KERNEL); | |
1437 | if (!opts) | |
1438 | return -ENOMEM; | |
1439 | ||
1440 | orig = opts; | |
90c161b6 | 1441 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1442 | if (!*ptr) |
1443 | continue; | |
1444 | ||
1445 | token = match_token(ptr, tokens, args); | |
1446 | switch (token) { | |
1447 | case Opt_initiator_fabric: | |
1448 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1449 | if (!i_fabric) { |
1450 | ret = -ENOMEM; | |
1451 | goto out; | |
1452 | } | |
c66ac9db NB |
1453 | break; |
1454 | case Opt_initiator_node: | |
1455 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1456 | if (!i_port) { |
1457 | ret = -ENOMEM; | |
1458 | goto out; | |
1459 | } | |
60d645a4 | 1460 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1461 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1462 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1463 | PR_APTPL_MAX_IPORT_LEN); | |
1464 | ret = -EINVAL; | |
1465 | break; | |
1466 | } | |
1467 | break; | |
1468 | case Opt_initiator_sid: | |
1469 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1470 | if (!isid) { |
1471 | ret = -ENOMEM; | |
1472 | goto out; | |
1473 | } | |
60d645a4 | 1474 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1475 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1476 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1477 | PR_REG_ISID_LEN); | |
1478 | ret = -EINVAL; | |
1479 | break; | |
1480 | } | |
1481 | break; | |
1482 | case Opt_sa_res_key: | |
1483 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1484 | if (!arg_p) { |
1485 | ret = -ENOMEM; | |
1486 | goto out; | |
1487 | } | |
c66ac9db NB |
1488 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
1489 | if (ret < 0) { | |
6708bb27 | 1490 | pr_err("strict_strtoull() failed for" |
c66ac9db NB |
1491 | " sa_res_key=\n"); |
1492 | goto out; | |
1493 | } | |
1494 | sa_res_key = (u64)tmp_ll; | |
1495 | break; | |
1496 | /* | |
1497 | * PR APTPL Metadata for Reservation | |
1498 | */ | |
1499 | case Opt_res_holder: | |
1500 | match_int(args, &arg); | |
1501 | res_holder = arg; | |
1502 | break; | |
1503 | case Opt_res_type: | |
1504 | match_int(args, &arg); | |
1505 | type = (u8)arg; | |
1506 | break; | |
1507 | case Opt_res_scope: | |
1508 | match_int(args, &arg); | |
1509 | scope = (u8)arg; | |
1510 | break; | |
1511 | case Opt_res_all_tg_pt: | |
1512 | match_int(args, &arg); | |
1513 | all_tg_pt = (int)arg; | |
1514 | break; | |
1515 | case Opt_mapped_lun: | |
1516 | match_int(args, &arg); | |
1517 | mapped_lun = (u32)arg; | |
1518 | break; | |
1519 | /* | |
1520 | * PR APTPL Metadata for Target Port | |
1521 | */ | |
1522 | case Opt_target_fabric: | |
1523 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1524 | if (!t_fabric) { |
1525 | ret = -ENOMEM; | |
1526 | goto out; | |
1527 | } | |
c66ac9db NB |
1528 | break; |
1529 | case Opt_target_node: | |
1530 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1531 | if (!t_port) { |
1532 | ret = -ENOMEM; | |
1533 | goto out; | |
1534 | } | |
60d645a4 | 1535 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1536 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1537 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1538 | PR_APTPL_MAX_TPORT_LEN); | |
1539 | ret = -EINVAL; | |
1540 | break; | |
1541 | } | |
1542 | break; | |
1543 | case Opt_tpgt: | |
1544 | match_int(args, &arg); | |
1545 | tpgt = (u16)arg; | |
1546 | break; | |
1547 | case Opt_port_rtpi: | |
1548 | match_int(args, &arg); | |
1549 | port_rpti = (u16)arg; | |
1550 | break; | |
1551 | case Opt_target_lun: | |
1552 | match_int(args, &arg); | |
1553 | target_lun = (u32)arg; | |
1554 | break; | |
1555 | default: | |
1556 | break; | |
1557 | } | |
1558 | } | |
1559 | ||
6708bb27 AG |
1560 | if (!i_port || !t_port || !sa_res_key) { |
1561 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1562 | ret = -EINVAL; |
1563 | goto out; | |
1564 | } | |
1565 | ||
1566 | if (res_holder && !(type)) { | |
6708bb27 | 1567 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1568 | " holder\n", type); |
1569 | ret = -EINVAL; | |
1570 | goto out; | |
1571 | } | |
1572 | ||
e3d6f909 | 1573 | ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key, |
c66ac9db NB |
1574 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1575 | res_holder, all_tg_pt, type); | |
1576 | out: | |
6d180253 JJ |
1577 | kfree(i_fabric); |
1578 | kfree(i_port); | |
1579 | kfree(isid); | |
1580 | kfree(t_fabric); | |
1581 | kfree(t_port); | |
c66ac9db NB |
1582 | kfree(orig); |
1583 | return (ret == 0) ? count : ret; | |
1584 | } | |
1585 | ||
1586 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1587 | ||
1588 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); | |
1589 | ||
1590 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1591 | &target_core_dev_pr_res_holder.attr, | |
1592 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1593 | &target_core_dev_pr_res_pr_generation.attr, | |
1594 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1595 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1596 | &target_core_dev_pr_res_pr_type.attr, | |
1597 | &target_core_dev_pr_res_type.attr, | |
1598 | &target_core_dev_pr_res_aptpl_active.attr, | |
1599 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1600 | NULL, | |
1601 | }; | |
1602 | ||
1603 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1604 | .show_attribute = target_core_dev_pr_attr_show, | |
1605 | .store_attribute = target_core_dev_pr_attr_store, | |
1606 | }; | |
1607 | ||
1608 | static struct config_item_type target_core_dev_pr_cit = { | |
1609 | .ct_item_ops = &target_core_dev_pr_ops, | |
1610 | .ct_attrs = target_core_dev_pr_attrs, | |
1611 | .ct_owner = THIS_MODULE, | |
1612 | }; | |
1613 | ||
1614 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1615 | ||
1616 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1617 | ||
1618 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1619 | { | |
8359cf43 | 1620 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1621 | struct se_hba *hba = se_dev->se_dev_hba; |
1622 | struct se_subsystem_api *t = hba->transport; | |
1623 | int bl = 0; | |
1624 | ssize_t read_bytes = 0; | |
1625 | ||
6708bb27 | 1626 | if (!se_dev->se_dev_ptr) |
c66ac9db NB |
1627 | return -ENODEV; |
1628 | ||
1629 | transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); | |
1630 | read_bytes += bl; | |
1631 | read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); | |
1632 | return read_bytes; | |
1633 | } | |
1634 | ||
1635 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1636 | .attr = { .ca_owner = THIS_MODULE, | |
1637 | .ca_name = "info", | |
1638 | .ca_mode = S_IRUGO }, | |
1639 | .show = target_core_show_dev_info, | |
1640 | .store = NULL, | |
1641 | }; | |
1642 | ||
1643 | static ssize_t target_core_store_dev_control( | |
1644 | void *p, | |
1645 | const char *page, | |
1646 | size_t count) | |
1647 | { | |
8359cf43 | 1648 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1649 | struct se_hba *hba = se_dev->se_dev_hba; |
1650 | struct se_subsystem_api *t = hba->transport; | |
1651 | ||
6708bb27 AG |
1652 | if (!se_dev->se_dev_su_ptr) { |
1653 | pr_err("Unable to locate struct se_subsystem_dev>se" | |
c66ac9db NB |
1654 | "_dev_su_ptr\n"); |
1655 | return -EINVAL; | |
1656 | } | |
1657 | ||
1658 | return t->set_configfs_dev_params(hba, se_dev, page, count); | |
1659 | } | |
1660 | ||
1661 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1662 | .attr = { .ca_owner = THIS_MODULE, | |
1663 | .ca_name = "control", | |
1664 | .ca_mode = S_IWUSR }, | |
1665 | .show = NULL, | |
1666 | .store = target_core_store_dev_control, | |
1667 | }; | |
1668 | ||
1669 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1670 | { | |
8359cf43 | 1671 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1672 | |
1673 | if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) | |
1674 | return 0; | |
1675 | ||
1676 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); | |
1677 | } | |
1678 | ||
1679 | static ssize_t target_core_store_dev_alias( | |
1680 | void *p, | |
1681 | const char *page, | |
1682 | size_t count) | |
1683 | { | |
8359cf43 | 1684 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1685 | struct se_hba *hba = se_dev->se_dev_hba; |
1686 | ssize_t read_bytes; | |
1687 | ||
1688 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1689 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1690 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1691 | SE_DEV_ALIAS_LEN-1); | |
1692 | return -EINVAL; | |
1693 | } | |
1694 | ||
c66ac9db NB |
1695 | read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, |
1696 | "%s", page); | |
3011684c DC |
1697 | if (!read_bytes) |
1698 | return -EINVAL; | |
0877eafd SAS |
1699 | if (se_dev->se_dev_alias[read_bytes - 1] == '\n') |
1700 | se_dev->se_dev_alias[read_bytes - 1] = '\0'; | |
1701 | ||
3011684c DC |
1702 | se_dev->su_dev_flags |= SDF_USING_ALIAS; |
1703 | ||
6708bb27 | 1704 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db NB |
1705 | config_item_name(&hba->hba_group.cg_item), |
1706 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1707 | se_dev->se_dev_alias); | |
1708 | ||
1709 | return read_bytes; | |
1710 | } | |
1711 | ||
1712 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1713 | .attr = { .ca_owner = THIS_MODULE, | |
1714 | .ca_name = "alias", | |
1715 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1716 | .show = target_core_show_dev_alias, | |
1717 | .store = target_core_store_dev_alias, | |
1718 | }; | |
1719 | ||
1720 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1721 | { | |
8359cf43 | 1722 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1723 | |
1724 | if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) | |
1725 | return 0; | |
1726 | ||
1727 | return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); | |
1728 | } | |
1729 | ||
1730 | static ssize_t target_core_store_dev_udev_path( | |
1731 | void *p, | |
1732 | const char *page, | |
1733 | size_t count) | |
1734 | { | |
8359cf43 | 1735 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1736 | struct se_hba *hba = se_dev->se_dev_hba; |
1737 | ssize_t read_bytes; | |
1738 | ||
1739 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1740 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1741 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1742 | SE_UDEV_PATH_LEN-1); | |
1743 | return -EINVAL; | |
1744 | } | |
1745 | ||
c66ac9db NB |
1746 | read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, |
1747 | "%s", page); | |
3011684c DC |
1748 | if (!read_bytes) |
1749 | return -EINVAL; | |
0877eafd SAS |
1750 | if (se_dev->se_dev_udev_path[read_bytes - 1] == '\n') |
1751 | se_dev->se_dev_udev_path[read_bytes - 1] = '\0'; | |
1752 | ||
3011684c DC |
1753 | se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; |
1754 | ||
6708bb27 | 1755 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db NB |
1756 | config_item_name(&hba->hba_group.cg_item), |
1757 | config_item_name(&se_dev->se_dev_group.cg_item), | |
1758 | se_dev->se_dev_udev_path); | |
1759 | ||
1760 | return read_bytes; | |
1761 | } | |
1762 | ||
1763 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1764 | .attr = { .ca_owner = THIS_MODULE, | |
1765 | .ca_name = "udev_path", | |
1766 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1767 | .show = target_core_show_dev_udev_path, | |
1768 | .store = target_core_store_dev_udev_path, | |
1769 | }; | |
1770 | ||
1771 | static ssize_t target_core_store_dev_enable( | |
1772 | void *p, | |
1773 | const char *page, | |
1774 | size_t count) | |
1775 | { | |
8359cf43 | 1776 | struct se_subsystem_dev *se_dev = p; |
c66ac9db NB |
1777 | struct se_device *dev; |
1778 | struct se_hba *hba = se_dev->se_dev_hba; | |
1779 | struct se_subsystem_api *t = hba->transport; | |
1780 | char *ptr; | |
1781 | ||
1782 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1783 | if (!ptr) { |
1784 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1785 | " is \"1\"\n"); |
1786 | return -EINVAL; | |
1787 | } | |
6708bb27 AG |
1788 | if (se_dev->se_dev_ptr) { |
1789 | pr_err("se_dev->se_dev_ptr already set for storage" | |
c66ac9db NB |
1790 | " object\n"); |
1791 | return -EEXIST; | |
1792 | } | |
1793 | ||
1794 | if (t->check_configfs_dev_params(hba, se_dev) < 0) | |
1795 | return -EINVAL; | |
1796 | ||
1797 | dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); | |
613640e4 NB |
1798 | if (IS_ERR(dev)) |
1799 | return PTR_ERR(dev); | |
1800 | else if (!dev) | |
c66ac9db NB |
1801 | return -EINVAL; |
1802 | ||
1803 | se_dev->se_dev_ptr = dev; | |
6708bb27 | 1804 | pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" |
c66ac9db NB |
1805 | " %p\n", se_dev->se_dev_ptr); |
1806 | ||
1807 | return count; | |
1808 | } | |
1809 | ||
1810 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1811 | .attr = { .ca_owner = THIS_MODULE, | |
1812 | .ca_name = "enable", | |
1813 | .ca_mode = S_IWUSR }, | |
1814 | .show = NULL, | |
1815 | .store = target_core_store_dev_enable, | |
1816 | }; | |
1817 | ||
1818 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1819 | { | |
1820 | struct se_device *dev; | |
8359cf43 | 1821 | struct se_subsystem_dev *su_dev = p; |
c66ac9db NB |
1822 | struct config_item *lu_ci; |
1823 | struct t10_alua_lu_gp *lu_gp; | |
1824 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1825 | ssize_t len = 0; | |
1826 | ||
1827 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1828 | if (!dev) |
c66ac9db NB |
1829 | return -ENODEV; |
1830 | ||
e3d6f909 | 1831 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) |
c66ac9db NB |
1832 | return len; |
1833 | ||
1834 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 AG |
1835 | if (!lu_gp_mem) { |
1836 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" | |
c66ac9db NB |
1837 | " pointer\n"); |
1838 | return -EINVAL; | |
1839 | } | |
1840 | ||
1841 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1842 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1843 | if (lu_gp) { |
c66ac9db NB |
1844 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1845 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1846 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1847 | } | |
1848 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1849 | ||
1850 | return len; | |
1851 | } | |
1852 | ||
1853 | static ssize_t target_core_store_alua_lu_gp( | |
1854 | void *p, | |
1855 | const char *page, | |
1856 | size_t count) | |
1857 | { | |
1858 | struct se_device *dev; | |
8359cf43 | 1859 | struct se_subsystem_dev *su_dev = p; |
c66ac9db NB |
1860 | struct se_hba *hba = su_dev->se_dev_hba; |
1861 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; | |
1862 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1863 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1864 | int move = 0; | |
1865 | ||
1866 | dev = su_dev->se_dev_ptr; | |
6708bb27 | 1867 | if (!dev) |
c66ac9db NB |
1868 | return -ENODEV; |
1869 | ||
e3d6f909 | 1870 | if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { |
6708bb27 | 1871 | pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n", |
c66ac9db NB |
1872 | config_item_name(&hba->hba_group.cg_item), |
1873 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
1874 | return -EINVAL; | |
1875 | } | |
1876 | if (count > LU_GROUP_NAME_BUF) { | |
6708bb27 | 1877 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1878 | return -EINVAL; |
1879 | } | |
1880 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1881 | memcpy(buf, page, count); | |
1882 | /* | |
1883 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1884 | * making a new group association. | |
1885 | */ | |
1886 | if (strcmp(strstrip(buf), "NULL")) { | |
1887 | /* | |
1888 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1889 | * struct t10_alua_lu_gp. This reference is released with | |
1890 | * core_alua_get_lu_gp_by_name below(). | |
1891 | */ | |
1892 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1893 | if (!lu_gp_new) |
c66ac9db NB |
1894 | return -ENODEV; |
1895 | } | |
1896 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
6708bb27 | 1897 | if (!lu_gp_mem) { |
c66ac9db NB |
1898 | if (lu_gp_new) |
1899 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
6708bb27 | 1900 | pr_err("NULL struct se_device->dev_alua_lu_gp_mem" |
c66ac9db NB |
1901 | " pointer\n"); |
1902 | return -EINVAL; | |
1903 | } | |
1904 | ||
1905 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1906 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1907 | if (lu_gp) { |
c66ac9db NB |
1908 | /* |
1909 | * Clearing an existing lu_gp association, and replacing | |
1910 | * with NULL | |
1911 | */ | |
6708bb27 AG |
1912 | if (!lu_gp_new) { |
1913 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1914 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1915 | " %hu\n", | |
1916 | config_item_name(&hba->hba_group.cg_item), | |
1917 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1918 | config_item_name(&lu_gp->lu_gp_group.cg_item), | |
1919 | lu_gp->lu_gp_id); | |
1920 | ||
1921 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1922 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1923 | ||
1924 | return count; | |
1925 | } | |
1926 | /* | |
1927 | * Removing existing association of lu_gp_mem with lu_gp | |
1928 | */ | |
1929 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1930 | move = 1; | |
1931 | } | |
1932 | /* | |
1933 | * Associate lu_gp_mem with lu_gp_new. | |
1934 | */ | |
1935 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1936 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1937 | ||
6708bb27 | 1938 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1939 | " core/alua/lu_gps/%s, ID: %hu\n", |
1940 | (move) ? "Moving" : "Adding", | |
1941 | config_item_name(&hba->hba_group.cg_item), | |
1942 | config_item_name(&su_dev->se_dev_group.cg_item), | |
1943 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), | |
1944 | lu_gp_new->lu_gp_id); | |
1945 | ||
1946 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1947 | return count; | |
1948 | } | |
1949 | ||
1950 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1951 | .attr = { .ca_owner = THIS_MODULE, | |
1952 | .ca_name = "alua_lu_gp", | |
1953 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1954 | .show = target_core_show_alua_lu_gp, | |
1955 | .store = target_core_store_alua_lu_gp, | |
1956 | }; | |
1957 | ||
1958 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1959 | &target_core_attr_dev_info.attr, | |
1960 | &target_core_attr_dev_control.attr, | |
1961 | &target_core_attr_dev_alias.attr, | |
1962 | &target_core_attr_dev_udev_path.attr, | |
1963 | &target_core_attr_dev_enable.attr, | |
1964 | &target_core_attr_dev_alua_lu_gp.attr, | |
1965 | NULL, | |
1966 | }; | |
1967 | ||
1968 | static void target_core_dev_release(struct config_item *item) | |
1969 | { | |
1970 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
1971 | struct se_subsystem_dev, se_dev_group); | |
1f6fe7cb NB |
1972 | struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); |
1973 | struct se_subsystem_api *t = hba->transport; | |
1974 | struct config_group *dev_cg = &se_dev->se_dev_group; | |
c66ac9db | 1975 | |
c66ac9db | 1976 | kfree(dev_cg->default_groups); |
1f6fe7cb NB |
1977 | /* |
1978 | * This pointer will set when the storage is enabled with: | |
1979 | *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` | |
1980 | */ | |
1981 | if (se_dev->se_dev_ptr) { | |
6708bb27 | 1982 | pr_debug("Target_Core_ConfigFS: Calling se_free_" |
1f6fe7cb NB |
1983 | "virtual_device() for se_dev_ptr: %p\n", |
1984 | se_dev->se_dev_ptr); | |
1985 | ||
1986 | se_free_virtual_device(se_dev->se_dev_ptr, hba); | |
1987 | } else { | |
1988 | /* | |
1989 | * Release struct se_subsystem_dev->se_dev_su_ptr.. | |
1990 | */ | |
6708bb27 | 1991 | pr_debug("Target_Core_ConfigFS: Calling t->free_" |
1f6fe7cb NB |
1992 | "device() for se_dev_su_ptr: %p\n", |
1993 | se_dev->se_dev_su_ptr); | |
1994 | ||
1995 | t->free_device(se_dev->se_dev_su_ptr); | |
1996 | } | |
1997 | ||
6708bb27 | 1998 | pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem" |
1f6fe7cb NB |
1999 | "_dev_t: %p\n", se_dev); |
2000 | kfree(se_dev); | |
c66ac9db NB |
2001 | } |
2002 | ||
2003 | static ssize_t target_core_dev_show(struct config_item *item, | |
2004 | struct configfs_attribute *attr, | |
2005 | char *page) | |
2006 | { | |
2007 | struct se_subsystem_dev *se_dev = container_of( | |
2008 | to_config_group(item), struct se_subsystem_dev, | |
2009 | se_dev_group); | |
2010 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2011 | attr, struct target_core_configfs_attribute, attr); | |
2012 | ||
6708bb27 | 2013 | if (!tc_attr->show) |
c66ac9db NB |
2014 | return -EINVAL; |
2015 | ||
5951146d | 2016 | return tc_attr->show(se_dev, page); |
c66ac9db NB |
2017 | } |
2018 | ||
2019 | static ssize_t target_core_dev_store(struct config_item *item, | |
2020 | struct configfs_attribute *attr, | |
2021 | const char *page, size_t count) | |
2022 | { | |
2023 | struct se_subsystem_dev *se_dev = container_of( | |
2024 | to_config_group(item), struct se_subsystem_dev, | |
2025 | se_dev_group); | |
2026 | struct target_core_configfs_attribute *tc_attr = container_of( | |
2027 | attr, struct target_core_configfs_attribute, attr); | |
2028 | ||
6708bb27 | 2029 | if (!tc_attr->store) |
c66ac9db NB |
2030 | return -EINVAL; |
2031 | ||
5951146d | 2032 | return tc_attr->store(se_dev, page, count); |
c66ac9db NB |
2033 | } |
2034 | ||
2035 | static struct configfs_item_operations target_core_dev_item_ops = { | |
2036 | .release = target_core_dev_release, | |
2037 | .show_attribute = target_core_dev_show, | |
2038 | .store_attribute = target_core_dev_store, | |
2039 | }; | |
2040 | ||
2041 | static struct config_item_type target_core_dev_cit = { | |
2042 | .ct_item_ops = &target_core_dev_item_ops, | |
2043 | .ct_attrs = lio_core_dev_attrs, | |
2044 | .ct_owner = THIS_MODULE, | |
2045 | }; | |
2046 | ||
2047 | /* End functions for struct config_item_type target_core_dev_cit */ | |
2048 | ||
2049 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2050 | ||
2051 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
2052 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
2053 | static struct target_core_alua_lu_gp_attribute \ | |
2054 | target_core_alua_lu_gp_##_name = \ | |
2055 | __CONFIGFS_EATTR(_name, _mode, \ | |
2056 | target_core_alua_lu_gp_show_attr_##_name, \ | |
2057 | target_core_alua_lu_gp_store_attr_##_name); | |
2058 | ||
2059 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
2060 | static struct target_core_alua_lu_gp_attribute \ | |
2061 | target_core_alua_lu_gp_##_name = \ | |
2062 | __CONFIGFS_EATTR_RO(_name, \ | |
2063 | target_core_alua_lu_gp_show_attr_##_name); | |
2064 | ||
2065 | /* | |
2066 | * lu_gp_id | |
2067 | */ | |
2068 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
2069 | struct t10_alua_lu_gp *lu_gp, | |
2070 | char *page) | |
2071 | { | |
6708bb27 | 2072 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
2073 | return 0; |
2074 | ||
2075 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
2076 | } | |
2077 | ||
2078 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
2079 | struct t10_alua_lu_gp *lu_gp, | |
2080 | const char *page, | |
2081 | size_t count) | |
2082 | { | |
2083 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2084 | unsigned long lu_gp_id; | |
2085 | int ret; | |
2086 | ||
2087 | ret = strict_strtoul(page, 0, &lu_gp_id); | |
2088 | if (ret < 0) { | |
6708bb27 | 2089 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2090 | " lu_gp_id\n", ret); |
2091 | return -EINVAL; | |
2092 | } | |
2093 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2094 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2095 | " 0x0000ffff\n", lu_gp_id); |
2096 | return -EINVAL; | |
2097 | } | |
2098 | ||
2099 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2100 | if (ret < 0) | |
2101 | return -EINVAL; | |
2102 | ||
6708bb27 | 2103 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2104 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2105 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2106 | lu_gp->lu_gp_id); | |
2107 | ||
2108 | return count; | |
2109 | } | |
2110 | ||
2111 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
2112 | ||
2113 | /* | |
2114 | * members | |
2115 | */ | |
2116 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
2117 | struct t10_alua_lu_gp *lu_gp, | |
2118 | char *page) | |
2119 | { | |
2120 | struct se_device *dev; | |
2121 | struct se_hba *hba; | |
2122 | struct se_subsystem_dev *su_dev; | |
2123 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2124 | ssize_t len = 0, cur_len; | |
2125 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2126 | ||
2127 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2128 | ||
2129 | spin_lock(&lu_gp->lu_gp_lock); | |
2130 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2131 | dev = lu_gp_mem->lu_gp_mem_dev; | |
2132 | su_dev = dev->se_sub_dev; | |
2133 | hba = su_dev->se_dev_hba; | |
2134 | ||
2135 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2136 | config_item_name(&hba->hba_group.cg_item), | |
2137 | config_item_name(&su_dev->se_dev_group.cg_item)); | |
2138 | cur_len++; /* Extra byte for NULL terminator */ | |
2139 | ||
2140 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2141 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2142 | "_members buffer\n"); |
2143 | break; | |
2144 | } | |
2145 | memcpy(page+len, buf, cur_len); | |
2146 | len += cur_len; | |
2147 | } | |
2148 | spin_unlock(&lu_gp->lu_gp_lock); | |
2149 | ||
2150 | return len; | |
2151 | } | |
2152 | ||
2153 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
2154 | ||
2155 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
2156 | ||
2157 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2158 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
2159 | &target_core_alua_lu_gp_members.attr, | |
2160 | NULL, | |
2161 | }; | |
2162 | ||
1f6fe7cb NB |
2163 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2164 | { | |
2165 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2166 | struct t10_alua_lu_gp, lu_gp_group); | |
2167 | ||
2168 | core_alua_free_lu_gp(lu_gp); | |
2169 | } | |
2170 | ||
c66ac9db | 2171 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2172 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2173 | .show_attribute = target_core_alua_lu_gp_attr_show, |
2174 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
2175 | }; | |
2176 | ||
2177 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
2178 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
2179 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2180 | .ct_owner = THIS_MODULE, | |
2181 | }; | |
2182 | ||
2183 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2184 | ||
2185 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2186 | ||
2187 | static struct config_group *target_core_alua_create_lu_gp( | |
2188 | struct config_group *group, | |
2189 | const char *name) | |
2190 | { | |
2191 | struct t10_alua_lu_gp *lu_gp; | |
2192 | struct config_group *alua_lu_gp_cg = NULL; | |
2193 | struct config_item *alua_lu_gp_ci = NULL; | |
2194 | ||
2195 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2196 | if (IS_ERR(lu_gp)) | |
2197 | return NULL; | |
2198 | ||
2199 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2200 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2201 | ||
2202 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2203 | &target_core_alua_lu_gp_cit); | |
2204 | ||
6708bb27 | 2205 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2206 | " Group: core/alua/lu_gps/%s\n", |
2207 | config_item_name(alua_lu_gp_ci)); | |
2208 | ||
2209 | return alua_lu_gp_cg; | |
2210 | ||
2211 | } | |
2212 | ||
2213 | static void target_core_alua_drop_lu_gp( | |
2214 | struct config_group *group, | |
2215 | struct config_item *item) | |
2216 | { | |
2217 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2218 | struct t10_alua_lu_gp, lu_gp_group); | |
2219 | ||
6708bb27 | 2220 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2221 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2222 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2223 | /* |
2224 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2225 | * -> target_core_alua_lu_gp_release() | |
2226 | */ | |
c66ac9db | 2227 | config_item_put(item); |
c66ac9db NB |
2228 | } |
2229 | ||
2230 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2231 | .make_group = &target_core_alua_create_lu_gp, | |
2232 | .drop_item = &target_core_alua_drop_lu_gp, | |
2233 | }; | |
2234 | ||
2235 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2236 | .ct_item_ops = NULL, | |
2237 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2238 | .ct_owner = THIS_MODULE, | |
2239 | }; | |
2240 | ||
2241 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2242 | ||
2243 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2244 | ||
2245 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2246 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2247 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2248 | target_core_alua_tg_pt_gp_##_name = \ | |
2249 | __CONFIGFS_EATTR(_name, _mode, \ | |
2250 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2251 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2252 | ||
2253 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2254 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2255 | target_core_alua_tg_pt_gp_##_name = \ | |
2256 | __CONFIGFS_EATTR_RO(_name, \ | |
2257 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2258 | ||
2259 | /* | |
2260 | * alua_access_state | |
2261 | */ | |
2262 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2263 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2264 | char *page) | |
2265 | { | |
2266 | return sprintf(page, "%d\n", | |
2267 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2268 | } | |
2269 | ||
2270 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2271 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2272 | const char *page, | |
2273 | size_t count) | |
2274 | { | |
2275 | struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; | |
2276 | unsigned long tmp; | |
2277 | int new_state, ret; | |
2278 | ||
6708bb27 AG |
2279 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2280 | pr_err("Unable to do implict ALUA on non valid" | |
c66ac9db NB |
2281 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2282 | return -EINVAL; | |
2283 | } | |
2284 | ||
2285 | ret = strict_strtoul(page, 0, &tmp); | |
2286 | if (ret < 0) { | |
6708bb27 | 2287 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db NB |
2288 | " %s\n", page); |
2289 | return -EINVAL; | |
2290 | } | |
2291 | new_state = (int)tmp; | |
2292 | ||
2293 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { | |
6708bb27 | 2294 | pr_err("Unable to process implict configfs ALUA" |
5e58b029 | 2295 | " transition while TPGS_IMPLICT_ALUA is disabled\n"); |
c66ac9db NB |
2296 | return -EINVAL; |
2297 | } | |
2298 | ||
2299 | ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, | |
2300 | NULL, NULL, new_state, 0); | |
2301 | return (!ret) ? count : -EINVAL; | |
2302 | } | |
2303 | ||
2304 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2305 | ||
2306 | /* | |
2307 | * alua_access_status | |
2308 | */ | |
2309 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2310 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2311 | char *page) | |
2312 | { | |
2313 | return sprintf(page, "%s\n", | |
2314 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2315 | } | |
2316 | ||
2317 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2318 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2319 | const char *page, | |
2320 | size_t count) | |
2321 | { | |
2322 | unsigned long tmp; | |
2323 | int new_status, ret; | |
2324 | ||
6708bb27 AG |
2325 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2326 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2327 | " valid tg_pt_gp ID: %hu\n", |
2328 | tg_pt_gp->tg_pt_gp_valid_id); | |
2329 | return -EINVAL; | |
2330 | } | |
2331 | ||
2332 | ret = strict_strtoul(page, 0, &tmp); | |
2333 | if (ret < 0) { | |
6708bb27 | 2334 | pr_err("Unable to extract new ALUA access status" |
c66ac9db NB |
2335 | " from %s\n", page); |
2336 | return -EINVAL; | |
2337 | } | |
2338 | new_status = (int)tmp; | |
2339 | ||
2340 | if ((new_status != ALUA_STATUS_NONE) && | |
2341 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && | |
2342 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { | |
6708bb27 | 2343 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2344 | new_status); |
2345 | return -EINVAL; | |
2346 | } | |
2347 | ||
2348 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2349 | return count; | |
2350 | } | |
2351 | ||
2352 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2353 | ||
2354 | /* | |
2355 | * alua_access_type | |
2356 | */ | |
2357 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2358 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2359 | char *page) | |
2360 | { | |
2361 | return core_alua_show_access_type(tg_pt_gp, page); | |
2362 | } | |
2363 | ||
2364 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2365 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2366 | const char *page, | |
2367 | size_t count) | |
2368 | { | |
2369 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2370 | } | |
2371 | ||
2372 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2373 | ||
2374 | /* | |
2375 | * alua_write_metadata | |
2376 | */ | |
2377 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2378 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2379 | char *page) | |
2380 | { | |
2381 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2382 | } | |
2383 | ||
2384 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2385 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2386 | const char *page, | |
2387 | size_t count) | |
2388 | { | |
2389 | unsigned long tmp; | |
2390 | int ret; | |
2391 | ||
2392 | ret = strict_strtoul(page, 0, &tmp); | |
2393 | if (ret < 0) { | |
6708bb27 | 2394 | pr_err("Unable to extract alua_write_metadata\n"); |
c66ac9db NB |
2395 | return -EINVAL; |
2396 | } | |
2397 | ||
2398 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2399 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2400 | " %lu\n", tmp); |
2401 | return -EINVAL; | |
2402 | } | |
2403 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2404 | ||
2405 | return count; | |
2406 | } | |
2407 | ||
2408 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2409 | ||
2410 | ||
2411 | ||
2412 | /* | |
2413 | * nonop_delay_msecs | |
2414 | */ | |
2415 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2416 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2417 | char *page) | |
2418 | { | |
2419 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2420 | ||
2421 | } | |
2422 | ||
2423 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2424 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2425 | const char *page, | |
2426 | size_t count) | |
2427 | { | |
2428 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2429 | } | |
2430 | ||
2431 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2432 | ||
2433 | /* | |
2434 | * trans_delay_msecs | |
2435 | */ | |
2436 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2437 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2438 | char *page) | |
2439 | { | |
2440 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2441 | } | |
2442 | ||
2443 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2444 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2445 | const char *page, | |
2446 | size_t count) | |
2447 | { | |
2448 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2449 | } | |
2450 | ||
2451 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2452 | ||
2453 | /* | |
2454 | * preferred | |
2455 | */ | |
2456 | ||
2457 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2458 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2459 | char *page) | |
2460 | { | |
2461 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2462 | } | |
2463 | ||
2464 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2465 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2466 | const char *page, | |
2467 | size_t count) | |
2468 | { | |
2469 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2470 | } | |
2471 | ||
2472 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2473 | ||
2474 | /* | |
2475 | * tg_pt_gp_id | |
2476 | */ | |
2477 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2478 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2479 | char *page) | |
2480 | { | |
6708bb27 | 2481 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2482 | return 0; |
2483 | ||
2484 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2485 | } | |
2486 | ||
2487 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2488 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2489 | const char *page, | |
2490 | size_t count) | |
2491 | { | |
2492 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2493 | unsigned long tg_pt_gp_id; | |
2494 | int ret; | |
2495 | ||
2496 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); | |
2497 | if (ret < 0) { | |
6708bb27 | 2498 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
2499 | " tg_pt_gp_id\n", ret); |
2500 | return -EINVAL; | |
2501 | } | |
2502 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2503 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2504 | " 0x0000ffff\n", tg_pt_gp_id); |
2505 | return -EINVAL; | |
2506 | } | |
2507 | ||
2508 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2509 | if (ret < 0) | |
2510 | return -EINVAL; | |
2511 | ||
6708bb27 | 2512 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2513 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2514 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2515 | tg_pt_gp->tg_pt_gp_id); | |
2516 | ||
2517 | return count; | |
2518 | } | |
2519 | ||
2520 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2521 | ||
2522 | /* | |
2523 | * members | |
2524 | */ | |
2525 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2526 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2527 | char *page) | |
2528 | { | |
2529 | struct se_port *port; | |
2530 | struct se_portal_group *tpg; | |
2531 | struct se_lun *lun; | |
2532 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2533 | ssize_t len = 0, cur_len; | |
2534 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2535 | ||
2536 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2537 | ||
2538 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2539 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2540 | tg_pt_gp_mem_list) { | |
2541 | port = tg_pt_gp_mem->tg_pt; | |
2542 | tpg = port->sep_tpg; | |
2543 | lun = port->sep_lun; | |
2544 | ||
2545 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2546 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2547 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2548 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2549 | config_item_name(&lun->lun_group.cg_item)); |
2550 | cur_len++; /* Extra byte for NULL terminator */ | |
2551 | ||
2552 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2553 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2554 | "_members buffer\n"); |
2555 | break; | |
2556 | } | |
2557 | memcpy(page+len, buf, cur_len); | |
2558 | len += cur_len; | |
2559 | } | |
2560 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2561 | ||
2562 | return len; | |
2563 | } | |
2564 | ||
2565 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2566 | ||
2567 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2568 | tg_pt_gp_group); | |
2569 | ||
2570 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2571 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2572 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2573 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
2574 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, | |
2575 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2576 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
2577 | &target_core_alua_tg_pt_gp_preferred.attr, | |
2578 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2579 | &target_core_alua_tg_pt_gp_members.attr, | |
2580 | NULL, | |
2581 | }; | |
2582 | ||
1f6fe7cb NB |
2583 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2584 | { | |
2585 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2586 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2587 | ||
2588 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2589 | } | |
2590 | ||
c66ac9db | 2591 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2592 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2593 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2594 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2595 | }; | |
2596 | ||
2597 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2598 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2599 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2600 | .ct_owner = THIS_MODULE, | |
2601 | }; | |
2602 | ||
2603 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2604 | ||
2605 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2606 | ||
2607 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2608 | struct config_group *group, | |
2609 | const char *name) | |
2610 | { | |
2611 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2612 | alua_tg_pt_gps_group); | |
2613 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2614 | struct se_subsystem_dev *su_dev = alua->t10_sub_dev; | |
2615 | struct config_group *alua_tg_pt_gp_cg = NULL; | |
2616 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2617 | ||
2618 | tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); | |
6708bb27 | 2619 | if (!tg_pt_gp) |
c66ac9db NB |
2620 | return NULL; |
2621 | ||
2622 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2623 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2624 | ||
2625 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2626 | &target_core_alua_tg_pt_gp_cit); | |
2627 | ||
6708bb27 | 2628 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2629 | " Group: alua/tg_pt_gps/%s\n", |
2630 | config_item_name(alua_tg_pt_gp_ci)); | |
2631 | ||
2632 | return alua_tg_pt_gp_cg; | |
2633 | } | |
2634 | ||
2635 | static void target_core_alua_drop_tg_pt_gp( | |
2636 | struct config_group *group, | |
2637 | struct config_item *item) | |
2638 | { | |
2639 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2640 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2641 | ||
6708bb27 | 2642 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2643 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2644 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2645 | /* |
2646 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2647 | * -> target_core_alua_tg_pt_gp_release(). | |
2648 | */ | |
c66ac9db | 2649 | config_item_put(item); |
c66ac9db NB |
2650 | } |
2651 | ||
2652 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2653 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2654 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2655 | }; | |
2656 | ||
2657 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2658 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2659 | .ct_owner = THIS_MODULE, | |
2660 | }; | |
2661 | ||
2662 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2663 | ||
2664 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2665 | ||
2666 | /* | |
2667 | * target_core_alua_cit is a ConfigFS group that lives under | |
2668 | * /sys/kernel/config/target/core/alua. There are default groups | |
2669 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2670 | * target_core_alua_cit in target_core_init_configfs() below. | |
2671 | */ | |
2672 | static struct config_item_type target_core_alua_cit = { | |
2673 | .ct_item_ops = NULL, | |
2674 | .ct_attrs = NULL, | |
2675 | .ct_owner = THIS_MODULE, | |
2676 | }; | |
2677 | ||
2678 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2679 | ||
12d23384 NB |
2680 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2681 | ||
2682 | static struct config_group *target_core_stat_mkdir( | |
2683 | struct config_group *group, | |
2684 | const char *name) | |
2685 | { | |
2686 | return ERR_PTR(-ENOSYS); | |
2687 | } | |
2688 | ||
2689 | static void target_core_stat_rmdir( | |
2690 | struct config_group *group, | |
2691 | struct config_item *item) | |
2692 | { | |
2693 | return; | |
2694 | } | |
2695 | ||
2696 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2697 | .make_group = &target_core_stat_mkdir, | |
2698 | .drop_item = &target_core_stat_rmdir, | |
2699 | }; | |
2700 | ||
2701 | static struct config_item_type target_core_stat_cit = { | |
2702 | .ct_group_ops = &target_core_stat_group_ops, | |
2703 | .ct_owner = THIS_MODULE, | |
2704 | }; | |
2705 | ||
2706 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2707 | ||
c66ac9db NB |
2708 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2709 | ||
2710 | static struct config_group *target_core_make_subdev( | |
2711 | struct config_group *group, | |
2712 | const char *name) | |
2713 | { | |
2714 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
2715 | struct se_subsystem_dev *se_dev; | |
2716 | struct se_subsystem_api *t; | |
2717 | struct config_item *hba_ci = &group->cg_item; | |
2718 | struct se_hba *hba = item_to_hba(hba_ci); | |
2719 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; | |
12d23384 NB |
2720 | struct config_group *dev_stat_grp = NULL; |
2721 | int errno = -ENOMEM, ret; | |
c66ac9db | 2722 | |
12d23384 NB |
2723 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2724 | if (ret) | |
2725 | return ERR_PTR(ret); | |
c66ac9db NB |
2726 | /* |
2727 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2728 | */ | |
2729 | t = hba->transport; | |
2730 | ||
2731 | se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); | |
2732 | if (!se_dev) { | |
6708bb27 | 2733 | pr_err("Unable to allocate memory for" |
c66ac9db NB |
2734 | " struct se_subsystem_dev\n"); |
2735 | goto unlock; | |
2736 | } | |
c66ac9db NB |
2737 | INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); |
2738 | spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); | |
e3d6f909 AG |
2739 | INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); |
2740 | INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); | |
2741 | spin_lock_init(&se_dev->t10_pr.registration_lock); | |
2742 | spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); | |
c66ac9db NB |
2743 | INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); |
2744 | spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); | |
2745 | spin_lock_init(&se_dev->se_dev_lock); | |
e3d6f909 | 2746 | se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; |
c66ac9db NB |
2747 | se_dev->t10_wwn.t10_sub_dev = se_dev; |
2748 | se_dev->t10_alua.t10_sub_dev = se_dev; | |
2749 | se_dev->se_dev_attrib.da_sub_dev = se_dev; | |
2750 | ||
2751 | se_dev->se_dev_hba = hba; | |
2752 | dev_cg = &se_dev->se_dev_group; | |
2753 | ||
12d23384 | 2754 | dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, |
c66ac9db | 2755 | GFP_KERNEL); |
6708bb27 | 2756 | if (!dev_cg->default_groups) |
c66ac9db NB |
2757 | goto out; |
2758 | /* | |
2759 | * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr | |
2760 | * for ->allocate_virtdevice() | |
2761 | * | |
2762 | * se_dev->se_dev_ptr will be set after ->create_virtdev() | |
2763 | * has been called successfully in the next level up in the | |
2764 | * configfs tree for device object's struct config_group. | |
2765 | */ | |
2766 | se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); | |
6708bb27 AG |
2767 | if (!se_dev->se_dev_su_ptr) { |
2768 | pr_err("Unable to locate subsystem dependent pointer" | |
c66ac9db NB |
2769 | " from allocate_virtdevice()\n"); |
2770 | goto out; | |
2771 | } | |
c66ac9db NB |
2772 | |
2773 | config_group_init_type_name(&se_dev->se_dev_group, name, | |
2774 | &target_core_dev_cit); | |
2775 | config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", | |
2776 | &target_core_dev_attrib_cit); | |
2777 | config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", | |
2778 | &target_core_dev_pr_cit); | |
2779 | config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", | |
2780 | &target_core_dev_wwn_cit); | |
2781 | config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, | |
2782 | "alua", &target_core_alua_tg_pt_gps_cit); | |
12d23384 NB |
2783 | config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, |
2784 | "statistics", &target_core_stat_cit); | |
2785 | ||
c66ac9db NB |
2786 | dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; |
2787 | dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; | |
2788 | dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; | |
2789 | dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; | |
12d23384 NB |
2790 | dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; |
2791 | dev_cg->default_groups[5] = NULL; | |
c66ac9db | 2792 | /* |
12d23384 | 2793 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db NB |
2794 | */ |
2795 | tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); | |
6708bb27 | 2796 | if (!tg_pt_gp) |
c66ac9db NB |
2797 | goto out; |
2798 | ||
e3d6f909 | 2799 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2800 | tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
2801 | GFP_KERNEL); | |
6708bb27 AG |
2802 | if (!tg_pt_gp_cg->default_groups) { |
2803 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db NB |
2804 | "default_groups\n"); |
2805 | goto out; | |
2806 | } | |
2807 | ||
2808 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2809 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2810 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2811 | tg_pt_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2812 | se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
12d23384 NB |
2813 | /* |
2814 | * Add core/$HBA/$DEV/statistics/ default groups | |
2815 | */ | |
e3d6f909 | 2816 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2817 | dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, |
2818 | GFP_KERNEL); | |
2819 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2820 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
12d23384 NB |
2821 | goto out; |
2822 | } | |
2823 | target_stat_setup_dev_default_groups(se_dev); | |
c66ac9db | 2824 | |
6708bb27 | 2825 | pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" |
c66ac9db NB |
2826 | " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); |
2827 | ||
2828 | mutex_unlock(&hba->hba_access_mutex); | |
2829 | return &se_dev->se_dev_group; | |
2830 | out: | |
e3d6f909 AG |
2831 | if (se_dev->t10_alua.default_tg_pt_gp) { |
2832 | core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp); | |
2833 | se_dev->t10_alua.default_tg_pt_gp = NULL; | |
c66ac9db | 2834 | } |
12d23384 NB |
2835 | if (dev_stat_grp) |
2836 | kfree(dev_stat_grp->default_groups); | |
c66ac9db NB |
2837 | if (tg_pt_gp_cg) |
2838 | kfree(tg_pt_gp_cg->default_groups); | |
2839 | if (dev_cg) | |
2840 | kfree(dev_cg->default_groups); | |
2841 | if (se_dev->se_dev_su_ptr) | |
2842 | t->free_device(se_dev->se_dev_su_ptr); | |
2843 | kfree(se_dev); | |
2844 | unlock: | |
2845 | mutex_unlock(&hba->hba_access_mutex); | |
12d23384 | 2846 | return ERR_PTR(errno); |
c66ac9db NB |
2847 | } |
2848 | ||
2849 | static void target_core_drop_subdev( | |
2850 | struct config_group *group, | |
2851 | struct config_item *item) | |
2852 | { | |
2853 | struct se_subsystem_dev *se_dev = container_of(to_config_group(item), | |
2854 | struct se_subsystem_dev, se_dev_group); | |
2855 | struct se_hba *hba; | |
c66ac9db | 2856 | struct config_item *df_item; |
12d23384 | 2857 | struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2858 | int i; |
c66ac9db NB |
2859 | |
2860 | hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); | |
2861 | ||
1f6fe7cb | 2862 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2863 | |
e3d6f909 | 2864 | dev_stat_grp = &se_dev->dev_stat_grps.stat_group; |
12d23384 NB |
2865 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2866 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2867 | dev_stat_grp->default_groups[i] = NULL; | |
2868 | config_item_put(df_item); | |
2869 | } | |
2870 | kfree(dev_stat_grp->default_groups); | |
2871 | ||
e3d6f909 | 2872 | tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2873 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2874 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2875 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2876 | config_item_put(df_item); | |
2877 | } | |
2878 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2879 | /* |
2880 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2881 | * directly from target_core_alua_tg_pt_gp_release(). | |
2882 | */ | |
e3d6f909 | 2883 | se_dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db NB |
2884 | |
2885 | dev_cg = &se_dev->se_dev_group; | |
2886 | for (i = 0; dev_cg->default_groups[i]; i++) { | |
2887 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2888 | dev_cg->default_groups[i] = NULL; | |
2889 | config_item_put(df_item); | |
2890 | } | |
c66ac9db | 2891 | /* |
1f6fe7cb NB |
2892 | * The releasing of se_dev and associated se_dev->se_dev_ptr is done |
2893 | * from target_core_dev_item_ops->release() ->target_core_dev_release(). | |
c66ac9db | 2894 | */ |
1f6fe7cb | 2895 | config_item_put(item); |
c66ac9db | 2896 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2897 | } |
2898 | ||
2899 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2900 | .make_group = target_core_make_subdev, | |
2901 | .drop_item = target_core_drop_subdev, | |
2902 | }; | |
2903 | ||
2904 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2905 | #define SE_HBA_ATTR(_name, _mode) \ | |
2906 | static struct target_core_hba_attribute \ | |
2907 | target_core_hba_##_name = \ | |
2908 | __CONFIGFS_EATTR(_name, _mode, \ | |
2909 | target_core_hba_show_attr_##_name, \ | |
2910 | target_core_hba_store_attr_##_name); | |
2911 | ||
2912 | #define SE_HBA_ATTR_RO(_name) \ | |
2913 | static struct target_core_hba_attribute \ | |
2914 | target_core_hba_##_name = \ | |
2915 | __CONFIGFS_EATTR_RO(_name, \ | |
2916 | target_core_hba_show_attr_##_name); | |
2917 | ||
2918 | static ssize_t target_core_hba_show_attr_hba_info( | |
2919 | struct se_hba *hba, | |
2920 | char *page) | |
2921 | { | |
2922 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2923 | hba->hba_id, hba->transport->name, | |
2924 | TARGET_CORE_CONFIGFS_VERSION); | |
2925 | } | |
2926 | ||
2927 | SE_HBA_ATTR_RO(hba_info); | |
2928 | ||
2929 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2930 | char *page) | |
2931 | { | |
2932 | int hba_mode = 0; | |
2933 | ||
2934 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2935 | hba_mode = 1; | |
2936 | ||
2937 | return sprintf(page, "%d\n", hba_mode); | |
2938 | } | |
2939 | ||
2940 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2941 | const char *page, size_t count) | |
2942 | { | |
2943 | struct se_subsystem_api *transport = hba->transport; | |
2944 | unsigned long mode_flag; | |
2945 | int ret; | |
2946 | ||
2947 | if (transport->pmode_enable_hba == NULL) | |
2948 | return -EINVAL; | |
2949 | ||
2950 | ret = strict_strtoul(page, 0, &mode_flag); | |
2951 | if (ret < 0) { | |
6708bb27 | 2952 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
c66ac9db NB |
2953 | return -EINVAL; |
2954 | } | |
2955 | ||
2956 | spin_lock(&hba->device_lock); | |
6708bb27 AG |
2957 | if (!list_empty(&hba->hba_dev_list)) { |
2958 | pr_err("Unable to set hba_mode with active devices\n"); | |
c66ac9db NB |
2959 | spin_unlock(&hba->device_lock); |
2960 | return -EINVAL; | |
2961 | } | |
2962 | spin_unlock(&hba->device_lock); | |
2963 | ||
2964 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2965 | if (ret < 0) | |
2966 | return -EINVAL; | |
2967 | if (ret > 0) | |
2968 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2969 | else if (ret == 0) | |
2970 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2971 | ||
2972 | return count; | |
2973 | } | |
2974 | ||
2975 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2976 | ||
2977 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2978 | ||
1f6fe7cb NB |
2979 | static void target_core_hba_release(struct config_item *item) |
2980 | { | |
2981 | struct se_hba *hba = container_of(to_config_group(item), | |
2982 | struct se_hba, hba_group); | |
2983 | core_delete_hba(hba); | |
2984 | } | |
2985 | ||
c66ac9db NB |
2986 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2987 | &target_core_hba_hba_info.attr, | |
2988 | &target_core_hba_hba_mode.attr, | |
2989 | NULL, | |
2990 | }; | |
2991 | ||
2992 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2993 | .release = target_core_hba_release, |
c66ac9db NB |
2994 | .show_attribute = target_core_hba_attr_show, |
2995 | .store_attribute = target_core_hba_attr_store, | |
2996 | }; | |
2997 | ||
2998 | static struct config_item_type target_core_hba_cit = { | |
2999 | .ct_item_ops = &target_core_hba_item_ops, | |
3000 | .ct_group_ops = &target_core_hba_group_ops, | |
3001 | .ct_attrs = target_core_hba_attrs, | |
3002 | .ct_owner = THIS_MODULE, | |
3003 | }; | |
3004 | ||
3005 | static struct config_group *target_core_call_addhbatotarget( | |
3006 | struct config_group *group, | |
3007 | const char *name) | |
3008 | { | |
3009 | char *se_plugin_str, *str, *str2; | |
3010 | struct se_hba *hba; | |
3011 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3012 | unsigned long plugin_dep_id = 0; | |
3013 | int ret; | |
3014 | ||
3015 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3016 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3017 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3018 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3019 | TARGET_CORE_NAME_MAX_LEN); | |
3020 | return ERR_PTR(-ENAMETOOLONG); | |
3021 | } | |
3022 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3023 | ||
3024 | str = strstr(buf, "_"); | |
6708bb27 AG |
3025 | if (!str) { |
3026 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3027 | return ERR_PTR(-EINVAL); |
3028 | } | |
3029 | se_plugin_str = buf; | |
3030 | /* | |
3031 | * Special case for subsystem plugins that have "_" in their names. | |
3032 | * Namely rd_direct and rd_mcp.. | |
3033 | */ | |
3034 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3035 | if (str2) { |
c66ac9db NB |
3036 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3037 | str2++; /* Skip to start of plugin dependent ID */ | |
3038 | str = str2; | |
3039 | } else { | |
3040 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3041 | str++; /* Skip to start of plugin dependent ID */ | |
3042 | } | |
3043 | ||
3044 | ret = strict_strtoul(str, 0, &plugin_dep_id); | |
3045 | if (ret < 0) { | |
6708bb27 | 3046 | pr_err("strict_strtoul() returned %d for" |
c66ac9db NB |
3047 | " plugin_dep_id\n", ret); |
3048 | return ERR_PTR(-EINVAL); | |
3049 | } | |
3050 | /* | |
3051 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3052 | */ | |
dbc5623e | 3053 | transport_subsystem_check_init(); |
c66ac9db NB |
3054 | |
3055 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3056 | if (IS_ERR(hba)) | |
3057 | return ERR_CAST(hba); | |
3058 | ||
3059 | config_group_init_type_name(&hba->hba_group, name, | |
3060 | &target_core_hba_cit); | |
3061 | ||
3062 | return &hba->hba_group; | |
3063 | } | |
3064 | ||
3065 | static void target_core_call_delhbafromtarget( | |
3066 | struct config_group *group, | |
3067 | struct config_item *item) | |
3068 | { | |
1f6fe7cb NB |
3069 | /* |
3070 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3071 | * -> target_core_hba_release() | |
3072 | */ | |
c66ac9db | 3073 | config_item_put(item); |
c66ac9db NB |
3074 | } |
3075 | ||
3076 | static struct configfs_group_operations target_core_group_ops = { | |
3077 | .make_group = target_core_call_addhbatotarget, | |
3078 | .drop_item = target_core_call_delhbafromtarget, | |
3079 | }; | |
3080 | ||
3081 | static struct config_item_type target_core_cit = { | |
3082 | .ct_item_ops = NULL, | |
3083 | .ct_group_ops = &target_core_group_ops, | |
3084 | .ct_attrs = NULL, | |
3085 | .ct_owner = THIS_MODULE, | |
3086 | }; | |
3087 | ||
3088 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3089 | ||
54550fab | 3090 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
3091 | { |
3092 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
3093 | struct config_group *lu_gp_cg = NULL; | |
3094 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
3095 | struct t10_alua_lu_gp *lu_gp; |
3096 | int ret; | |
3097 | ||
6708bb27 | 3098 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3099 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3100 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3101 | ||
3102 | subsys = target_core_subsystem[0]; | |
3103 | config_group_init(&subsys->su_group); | |
3104 | mutex_init(&subsys->su_mutex); | |
3105 | ||
e3d6f909 | 3106 | ret = init_se_kmem_caches(); |
c66ac9db | 3107 | if (ret < 0) |
e3d6f909 | 3108 | return ret; |
c66ac9db NB |
3109 | /* |
3110 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3111 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3112 | */ | |
3113 | target_cg = &subsys->su_group; | |
3114 | target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, | |
3115 | GFP_KERNEL); | |
6708bb27 AG |
3116 | if (!target_cg->default_groups) { |
3117 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
c66ac9db NB |
3118 | goto out_global; |
3119 | } | |
3120 | ||
e3d6f909 | 3121 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 3122 | "core", &target_core_cit); |
e3d6f909 | 3123 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
3124 | target_cg->default_groups[1] = NULL; |
3125 | /* | |
3126 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3127 | */ | |
e3d6f909 | 3128 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3129 | hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3130 | GFP_KERNEL); | |
6708bb27 AG |
3131 | if (!hba_cg->default_groups) { |
3132 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
c66ac9db NB |
3133 | goto out_global; |
3134 | } | |
e3d6f909 | 3135 | config_group_init_type_name(&alua_group, |
c66ac9db | 3136 | "alua", &target_core_alua_cit); |
e3d6f909 | 3137 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3138 | hba_cg->default_groups[1] = NULL; |
3139 | /* | |
3140 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3141 | * groups under /sys/kernel/config/target/core/alua/ | |
3142 | */ | |
e3d6f909 | 3143 | alua_cg = &alua_group; |
c66ac9db NB |
3144 | alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3145 | GFP_KERNEL); | |
6708bb27 AG |
3146 | if (!alua_cg->default_groups) { |
3147 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
c66ac9db NB |
3148 | goto out_global; |
3149 | } | |
3150 | ||
e3d6f909 | 3151 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3152 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3153 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3154 | alua_cg->default_groups[1] = NULL; |
3155 | /* | |
3156 | * Add core/alua/lu_gps/default_lu_gp | |
3157 | */ | |
3158 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
3159 | if (IS_ERR(lu_gp)) | |
3160 | goto out_global; | |
3161 | ||
e3d6f909 | 3162 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3163 | lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, |
3164 | GFP_KERNEL); | |
6708bb27 AG |
3165 | if (!lu_gp_cg->default_groups) { |
3166 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
c66ac9db NB |
3167 | goto out_global; |
3168 | } | |
3169 | ||
3170 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3171 | &target_core_alua_lu_gp_cit); | |
3172 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3173 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3174 | default_lu_gp = lu_gp; |
c66ac9db NB |
3175 | /* |
3176 | * Register the target_core_mod subsystem with configfs. | |
3177 | */ | |
3178 | ret = configfs_register_subsystem(subsys); | |
3179 | if (ret < 0) { | |
6708bb27 | 3180 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3181 | ret, subsys->su_group.cg_item.ci_namebuf); |
3182 | goto out_global; | |
3183 | } | |
6708bb27 | 3184 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
3185 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
3186 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3187 | /* | |
3188 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3189 | */ | |
3190 | ret = rd_module_init(); | |
3191 | if (ret < 0) | |
3192 | goto out; | |
3193 | ||
3194 | if (core_dev_setup_virtual_lun0() < 0) | |
3195 | goto out; | |
3196 | ||
c66ac9db NB |
3197 | return 0; |
3198 | ||
3199 | out: | |
3200 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3201 | core_dev_release_virtual_lun0(); |
3202 | rd_module_exit(); | |
3203 | out_global: | |
e3d6f909 AG |
3204 | if (default_lu_gp) { |
3205 | core_alua_free_lu_gp(default_lu_gp); | |
3206 | default_lu_gp = NULL; | |
c66ac9db NB |
3207 | } |
3208 | if (lu_gp_cg) | |
3209 | kfree(lu_gp_cg->default_groups); | |
3210 | if (alua_cg) | |
3211 | kfree(alua_cg->default_groups); | |
3212 | if (hba_cg) | |
3213 | kfree(hba_cg->default_groups); | |
3214 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3215 | release_se_kmem_caches(); |
3216 | return ret; | |
c66ac9db NB |
3217 | } |
3218 | ||
54550fab | 3219 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3220 | { |
3221 | struct configfs_subsystem *subsys; | |
3222 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3223 | struct config_item *item; | |
3224 | int i; | |
3225 | ||
c66ac9db NB |
3226 | subsys = target_core_subsystem[0]; |
3227 | ||
e3d6f909 | 3228 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3229 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3230 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3231 | lu_gp_cg->default_groups[i] = NULL; | |
3232 | config_item_put(item); | |
3233 | } | |
3234 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3235 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3236 | |
e3d6f909 | 3237 | alua_cg = &alua_group; |
c66ac9db NB |
3238 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3239 | item = &alua_cg->default_groups[i]->cg_item; | |
3240 | alua_cg->default_groups[i] = NULL; | |
3241 | config_item_put(item); | |
3242 | } | |
3243 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3244 | alua_cg->default_groups = NULL; |
c66ac9db | 3245 | |
e3d6f909 | 3246 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3247 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3248 | item = &hba_cg->default_groups[i]->cg_item; | |
3249 | hba_cg->default_groups[i] = NULL; | |
3250 | config_item_put(item); | |
3251 | } | |
3252 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3253 | hba_cg->default_groups = NULL; |
3254 | /* | |
3255 | * We expect subsys->su_group.default_groups to be released | |
3256 | * by configfs subsystem provider logic.. | |
3257 | */ | |
3258 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3259 | kfree(subsys->su_group.default_groups); |
3260 | ||
e3d6f909 AG |
3261 | core_alua_free_lu_gp(default_lu_gp); |
3262 | default_lu_gp = NULL; | |
7c2bf6e9 | 3263 | |
6708bb27 | 3264 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3265 | " Infrastructure\n"); |
3266 | ||
c66ac9db NB |
3267 | core_dev_release_virtual_lun0(); |
3268 | rd_module_exit(); | |
e3d6f909 | 3269 | release_se_kmem_caches(); |
c66ac9db NB |
3270 | } |
3271 | ||
3272 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3273 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3274 | MODULE_LICENSE("GPL"); | |
3275 | ||
3276 | module_init(target_core_init_configfs); | |
3277 | module_exit(target_core_exit_configfs); |