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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 | * | |
4c76251e | 6 | * (c) Copyright 2008-2013 Datera, Inc. |
c66ac9db NB |
7 | * |
8 | * Nicholas A. Bellinger <nab@kernel.org> | |
9 | * | |
10 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | ****************************************************************************/ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/moduleparam.h> | |
c66ac9db NB |
25 | #include <generated/utsrelease.h> |
26 | #include <linux/utsname.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/fs.h> | |
29 | #include <linux/namei.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/types.h> | |
32 | #include <linux/delay.h> | |
33 | #include <linux/unistd.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/parser.h> | |
36 | #include <linux/syscalls.h> | |
37 | #include <linux/configfs.h> | |
e3d6f909 | 38 | #include <linux/spinlock.h> |
c66ac9db NB |
39 | |
40 | #include <target/target_core_base.h> | |
c4795fb2 CH |
41 | #include <target/target_core_backend.h> |
42 | #include <target/target_core_fabric.h> | |
c66ac9db NB |
43 | #include <target/target_core_fabric_configfs.h> |
44 | #include <target/target_core_configfs.h> | |
45 | #include <target/configfs_macros.h> | |
46 | ||
e26d99ae | 47 | #include "target_core_internal.h" |
c66ac9db | 48 | #include "target_core_alua.h" |
c66ac9db NB |
49 | #include "target_core_pr.h" |
50 | #include "target_core_rd.h" | |
f99715ac | 51 | #include "target_core_xcopy.h" |
c66ac9db | 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", |
d80e224d | 180 | &tf->tf_cit_tmpl.tfc_wwn_cit); |
c66ac9db NB |
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, | |
d80e224d | 187 | &tf->tf_cit_tmpl.tfc_wwn_cit); |
c66ac9db | 188 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
d80e224d | 189 | &tf->tf_cit_tmpl.tfc_discovery_cit); |
c66ac9db | 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 | ||
56d128fa | 272 | struct configfs_subsystem *target_core_subsystem[] = { |
c66ac9db NB |
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 | } | |
c66ac9db NB |
460 | /* |
461 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
462 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
463 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
464 | */ | |
6708bb27 AG |
465 | if (!tfo->fabric_make_wwn) { |
466 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
467 | return -EINVAL; |
468 | } | |
6708bb27 AG |
469 | if (!tfo->fabric_drop_wwn) { |
470 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
471 | return -EINVAL; |
472 | } | |
6708bb27 AG |
473 | if (!tfo->fabric_make_tpg) { |
474 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
475 | return -EINVAL; |
476 | } | |
6708bb27 AG |
477 | if (!tfo->fabric_drop_tpg) { |
478 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
479 | return -EINVAL; |
480 | } | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Called 2nd from fabric module with returned parameter of | |
487 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
488 | * | |
489 | * Upon a successful registration, the new fabric's struct config_item is | |
490 | * return. Also, a pointer to this struct is set in the passed | |
491 | * struct target_fabric_configfs. | |
492 | */ | |
493 | int target_fabric_configfs_register( | |
494 | struct target_fabric_configfs *tf) | |
495 | { | |
c66ac9db NB |
496 | int ret; |
497 | ||
6708bb27 AG |
498 | if (!tf) { |
499 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
500 | " pointer\n"); |
501 | return -EINVAL; | |
502 | } | |
6708bb27 AG |
503 | if (!tf->tf_subsys) { |
504 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
505 | " pointer\n"); |
506 | return -EINVAL; | |
507 | } | |
c66ac9db NB |
508 | ret = target_fabric_tf_ops_check(tf); |
509 | if (ret < 0) | |
510 | return ret; | |
511 | ||
6708bb27 | 512 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
513 | ">>>>>>>>>>\n"); |
514 | return 0; | |
515 | } | |
516 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
517 | ||
518 | void target_fabric_configfs_deregister( | |
519 | struct target_fabric_configfs *tf) | |
520 | { | |
c66ac9db NB |
521 | struct configfs_subsystem *su; |
522 | ||
6708bb27 AG |
523 | if (!tf) { |
524 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
525 | "configfs\n"); |
526 | return; | |
527 | } | |
528 | su = tf->tf_subsys; | |
6708bb27 AG |
529 | if (!su) { |
530 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
531 | " pointer\n"); |
532 | return; | |
533 | } | |
6708bb27 | 534 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
535 | ">>>>>>>>>>>>\n"); |
536 | mutex_lock(&g_tf_lock); | |
537 | if (atomic_read(&tf->tf_access_cnt)) { | |
538 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 539 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
540 | tf->tf_name); |
541 | BUG(); | |
542 | } | |
543 | list_del(&tf->tf_list); | |
544 | mutex_unlock(&g_tf_lock); | |
545 | ||
6708bb27 | 546 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
547 | " %s\n", tf->tf_name); |
548 | tf->tf_module = NULL; | |
549 | tf->tf_subsys = NULL; | |
550 | kfree(tf); | |
551 | ||
6708bb27 | 552 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 553 | ">>>>>\n"); |
c66ac9db NB |
554 | } |
555 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
556 | ||
557 | /*############################################################################## | |
558 | // Stop functions called by external Target Fabrics Modules | |
559 | //############################################################################*/ | |
560 | ||
561 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ | |
562 | ||
563 | #define DEF_DEV_ATTRIB_SHOW(_name) \ | |
564 | static ssize_t target_core_dev_show_attr_##_name( \ | |
565 | struct se_dev_attrib *da, \ | |
566 | char *page) \ | |
567 | { \ | |
0fd97ccf CH |
568 | return snprintf(page, PAGE_SIZE, "%u\n", \ |
569 | (u32)da->da_dev->dev_attrib._name); \ | |
c66ac9db NB |
570 | } |
571 | ||
572 | #define DEF_DEV_ATTRIB_STORE(_name) \ | |
573 | static ssize_t target_core_dev_store_attr_##_name( \ | |
574 | struct se_dev_attrib *da, \ | |
575 | const char *page, \ | |
576 | size_t count) \ | |
577 | { \ | |
c66ac9db NB |
578 | unsigned long val; \ |
579 | int ret; \ | |
580 | \ | |
57103d7f | 581 | ret = kstrtoul(page, 0, &val); \ |
c66ac9db | 582 | if (ret < 0) { \ |
57103d7f | 583 | pr_err("kstrtoul() failed with" \ |
c66ac9db NB |
584 | " ret: %d\n", ret); \ |
585 | return -EINVAL; \ | |
586 | } \ | |
0fd97ccf | 587 | ret = se_dev_set_##_name(da->da_dev, (u32)val); \ |
c66ac9db NB |
588 | \ |
589 | return (!ret) ? count : -EINVAL; \ | |
590 | } | |
591 | ||
592 | #define DEF_DEV_ATTRIB(_name) \ | |
593 | DEF_DEV_ATTRIB_SHOW(_name); \ | |
594 | DEF_DEV_ATTRIB_STORE(_name); | |
595 | ||
596 | #define DEF_DEV_ATTRIB_RO(_name) \ | |
597 | DEF_DEV_ATTRIB_SHOW(_name); | |
598 | ||
599 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); | |
600 | #define SE_DEV_ATTR(_name, _mode) \ | |
601 | static struct target_core_dev_attrib_attribute \ | |
602 | target_core_dev_attrib_##_name = \ | |
603 | __CONFIGFS_EATTR(_name, _mode, \ | |
604 | target_core_dev_show_attr_##_name, \ | |
605 | target_core_dev_store_attr_##_name); | |
606 | ||
607 | #define SE_DEV_ATTR_RO(_name); \ | |
608 | static struct target_core_dev_attrib_attribute \ | |
609 | target_core_dev_attrib_##_name = \ | |
610 | __CONFIGFS_EATTR_RO(_name, \ | |
611 | target_core_dev_show_attr_##_name); | |
612 | ||
adfa9570 TB |
613 | DEF_DEV_ATTRIB(emulate_model_alias); |
614 | SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); | |
615 | ||
c66ac9db NB |
616 | DEF_DEV_ATTRIB(emulate_dpo); |
617 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); | |
618 | ||
619 | DEF_DEV_ATTRIB(emulate_fua_write); | |
620 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); | |
621 | ||
622 | DEF_DEV_ATTRIB(emulate_fua_read); | |
623 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); | |
624 | ||
625 | DEF_DEV_ATTRIB(emulate_write_cache); | |
626 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); | |
627 | ||
628 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); | |
629 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); | |
630 | ||
631 | DEF_DEV_ATTRIB(emulate_tas); | |
632 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); | |
633 | ||
634 | DEF_DEV_ATTRIB(emulate_tpu); | |
635 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); | |
636 | ||
637 | DEF_DEV_ATTRIB(emulate_tpws); | |
638 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); | |
639 | ||
0123a9ec NB |
640 | DEF_DEV_ATTRIB(emulate_caw); |
641 | SE_DEV_ATTR(emulate_caw, S_IRUGO | S_IWUSR); | |
642 | ||
d397a445 NB |
643 | DEF_DEV_ATTRIB(emulate_3pc); |
644 | SE_DEV_ATTR(emulate_3pc, S_IRUGO | S_IWUSR); | |
645 | ||
c66ac9db NB |
646 | DEF_DEV_ATTRIB(enforce_pr_isids); |
647 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); | |
648 | ||
e22a7f07 RD |
649 | DEF_DEV_ATTRIB(is_nonrot); |
650 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); | |
651 | ||
5de619a3 NB |
652 | DEF_DEV_ATTRIB(emulate_rest_reord); |
653 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); | |
654 | ||
c66ac9db NB |
655 | DEF_DEV_ATTRIB_RO(hw_block_size); |
656 | SE_DEV_ATTR_RO(hw_block_size); | |
657 | ||
658 | DEF_DEV_ATTRIB(block_size); | |
659 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); | |
660 | ||
661 | DEF_DEV_ATTRIB_RO(hw_max_sectors); | |
662 | SE_DEV_ATTR_RO(hw_max_sectors); | |
663 | ||
015487b8 RD |
664 | DEF_DEV_ATTRIB(fabric_max_sectors); |
665 | SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); | |
666 | ||
c66ac9db NB |
667 | DEF_DEV_ATTRIB(optimal_sectors); |
668 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); | |
669 | ||
670 | DEF_DEV_ATTRIB_RO(hw_queue_depth); | |
671 | SE_DEV_ATTR_RO(hw_queue_depth); | |
672 | ||
673 | DEF_DEV_ATTRIB(queue_depth); | |
674 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); | |
675 | ||
c66ac9db NB |
676 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
677 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); | |
678 | ||
679 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); | |
680 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); | |
681 | ||
682 | DEF_DEV_ATTRIB(unmap_granularity); | |
683 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); | |
684 | ||
685 | DEF_DEV_ATTRIB(unmap_granularity_alignment); | |
686 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); | |
687 | ||
773cbaf7 NB |
688 | DEF_DEV_ATTRIB(max_write_same_len); |
689 | SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); | |
690 | ||
c66ac9db NB |
691 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); |
692 | ||
693 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { | |
adfa9570 | 694 | &target_core_dev_attrib_emulate_model_alias.attr, |
c66ac9db NB |
695 | &target_core_dev_attrib_emulate_dpo.attr, |
696 | &target_core_dev_attrib_emulate_fua_write.attr, | |
697 | &target_core_dev_attrib_emulate_fua_read.attr, | |
698 | &target_core_dev_attrib_emulate_write_cache.attr, | |
699 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, | |
700 | &target_core_dev_attrib_emulate_tas.attr, | |
701 | &target_core_dev_attrib_emulate_tpu.attr, | |
702 | &target_core_dev_attrib_emulate_tpws.attr, | |
0123a9ec | 703 | &target_core_dev_attrib_emulate_caw.attr, |
d397a445 | 704 | &target_core_dev_attrib_emulate_3pc.attr, |
c66ac9db | 705 | &target_core_dev_attrib_enforce_pr_isids.attr, |
e22a7f07 | 706 | &target_core_dev_attrib_is_nonrot.attr, |
5de619a3 | 707 | &target_core_dev_attrib_emulate_rest_reord.attr, |
c66ac9db NB |
708 | &target_core_dev_attrib_hw_block_size.attr, |
709 | &target_core_dev_attrib_block_size.attr, | |
710 | &target_core_dev_attrib_hw_max_sectors.attr, | |
015487b8 | 711 | &target_core_dev_attrib_fabric_max_sectors.attr, |
c66ac9db NB |
712 | &target_core_dev_attrib_optimal_sectors.attr, |
713 | &target_core_dev_attrib_hw_queue_depth.attr, | |
714 | &target_core_dev_attrib_queue_depth.attr, | |
c66ac9db NB |
715 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
716 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, | |
717 | &target_core_dev_attrib_unmap_granularity.attr, | |
718 | &target_core_dev_attrib_unmap_granularity_alignment.attr, | |
773cbaf7 | 719 | &target_core_dev_attrib_max_write_same_len.attr, |
c66ac9db NB |
720 | NULL, |
721 | }; | |
722 | ||
723 | static struct configfs_item_operations target_core_dev_attrib_ops = { | |
724 | .show_attribute = target_core_dev_attrib_attr_show, | |
725 | .store_attribute = target_core_dev_attrib_attr_store, | |
726 | }; | |
727 | ||
728 | static struct config_item_type target_core_dev_attrib_cit = { | |
729 | .ct_item_ops = &target_core_dev_attrib_ops, | |
730 | .ct_attrs = target_core_dev_attrib_attrs, | |
731 | .ct_owner = THIS_MODULE, | |
732 | }; | |
733 | ||
734 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ | |
735 | ||
736 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ | |
737 | ||
738 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
739 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
740 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
741 | __CONFIGFS_EATTR(_name, _mode, \ | |
742 | target_core_dev_wwn_show_attr_##_name, \ | |
743 | target_core_dev_wwn_store_attr_##_name); | |
744 | ||
745 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
746 | do { \ | |
747 | static struct target_core_dev_wwn_attribute \ | |
748 | target_core_dev_wwn_##_name = \ | |
749 | __CONFIGFS_EATTR_RO(_name, \ | |
750 | target_core_dev_wwn_show_attr_##_name); \ | |
751 | } while (0); | |
752 | ||
753 | /* | |
754 | * VPD page 0x80 Unit serial | |
755 | */ | |
756 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
757 | struct t10_wwn *t10_wwn, | |
758 | char *page) | |
759 | { | |
c66ac9db NB |
760 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
761 | &t10_wwn->unit_serial[0]); | |
762 | } | |
763 | ||
764 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
765 | struct t10_wwn *t10_wwn, | |
766 | const char *page, | |
767 | size_t count) | |
768 | { | |
0fd97ccf | 769 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
770 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
771 | ||
772 | /* | |
773 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
774 | * from the struct scsi_device level firmware, do not allow | |
775 | * VPD Unit Serial to be emulated. | |
776 | * | |
777 | * Note this struct scsi_device could also be emulating VPD | |
778 | * information from its drivers/scsi LLD. But for now we assume | |
779 | * it is doing 'the right thing' wrt a world wide unique | |
780 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
781 | */ | |
0fd97ccf | 782 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 783 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
784 | " Unit Serial, ignoring request\n"); |
785 | return -EOPNOTSUPP; | |
786 | } | |
787 | ||
60d645a4 | 788 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 789 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
790 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
791 | return -EOVERFLOW; | |
792 | } | |
793 | /* | |
794 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
795 | * do exist, fail here as changing this information on the fly | |
796 | * (underneath the initiator side OS dependent multipath code) | |
797 | * could cause negative effects. | |
798 | */ | |
0fd97ccf CH |
799 | if (dev->export_count) { |
800 | pr_err("Unable to set VPD Unit Serial while" | |
801 | " active %d $FABRIC_MOD exports exist\n", | |
802 | dev->export_count); | |
803 | return -EINVAL; | |
c66ac9db | 804 | } |
0fd97ccf | 805 | |
c66ac9db NB |
806 | /* |
807 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
808 | * | |
809 | * Also, strip any newline added from the userspace | |
810 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
811 | */ | |
812 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
813 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 814 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 815 | "%s", strstrip(buf)); |
0fd97ccf | 816 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 817 | |
6708bb27 | 818 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 819 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
820 | |
821 | return count; | |
822 | } | |
823 | ||
824 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
825 | ||
826 | /* | |
827 | * VPD page 0x83 Protocol Identifier | |
828 | */ | |
829 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
830 | struct t10_wwn *t10_wwn, | |
831 | char *page) | |
832 | { | |
c66ac9db NB |
833 | struct t10_vpd *vpd; |
834 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
835 | ssize_t len = 0; | |
836 | ||
c66ac9db NB |
837 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
838 | ||
839 | spin_lock(&t10_wwn->t10_vpd_lock); | |
840 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 841 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
842 | continue; |
843 | ||
844 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
845 | ||
6708bb27 | 846 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
847 | break; |
848 | ||
849 | len += sprintf(page+len, "%s", buf); | |
850 | } | |
851 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
852 | ||
853 | return len; | |
854 | } | |
855 | ||
856 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
857 | struct t10_wwn *t10_wwn, | |
858 | const char *page, | |
859 | size_t count) | |
860 | { | |
861 | return -ENOSYS; | |
862 | } | |
863 | ||
864 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
865 | ||
866 | /* | |
867 | * Generic wrapper for dumping VPD identifiers by association. | |
868 | */ | |
869 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
870 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
871 | struct t10_wwn *t10_wwn, \ | |
872 | char *page) \ | |
873 | { \ | |
c66ac9db NB |
874 | struct t10_vpd *vpd; \ |
875 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
876 | ssize_t len = 0; \ | |
877 | \ | |
c66ac9db NB |
878 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
879 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
880 | if (vpd->association != _assoc) \ | |
881 | continue; \ | |
882 | \ | |
883 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
884 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 885 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
886 | break; \ |
887 | len += sprintf(page+len, "%s", buf); \ | |
888 | \ | |
889 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
890 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 891 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
892 | break; \ |
893 | len += sprintf(page+len, "%s", buf); \ | |
894 | \ | |
895 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
896 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 897 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
898 | break; \ |
899 | len += sprintf(page+len, "%s", buf); \ | |
900 | } \ | |
901 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
902 | \ | |
903 | return len; \ | |
904 | } | |
905 | ||
906 | /* | |
163cd5fa | 907 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
908 | */ |
909 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
910 | ||
911 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
912 | struct t10_wwn *t10_wwn, | |
913 | const char *page, | |
914 | size_t count) | |
915 | { | |
916 | return -ENOSYS; | |
917 | } | |
918 | ||
919 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
920 | ||
921 | /* | |
922 | * VPD page 0x83 Association: Target Port | |
923 | */ | |
924 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
925 | ||
926 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
927 | struct t10_wwn *t10_wwn, | |
928 | const char *page, | |
929 | size_t count) | |
930 | { | |
931 | return -ENOSYS; | |
932 | } | |
933 | ||
934 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
935 | ||
936 | /* | |
937 | * VPD page 0x83 Association: SCSI Target Device | |
938 | */ | |
939 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
940 | ||
941 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
942 | struct t10_wwn *t10_wwn, | |
943 | const char *page, | |
944 | size_t count) | |
945 | { | |
946 | return -ENOSYS; | |
947 | } | |
948 | ||
949 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
950 | ||
951 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
952 | ||
953 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
954 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
955 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
956 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
957 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
958 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
959 | NULL, | |
960 | }; | |
961 | ||
962 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
963 | .show_attribute = target_core_dev_wwn_attr_show, | |
964 | .store_attribute = target_core_dev_wwn_attr_store, | |
965 | }; | |
966 | ||
967 | static struct config_item_type target_core_dev_wwn_cit = { | |
968 | .ct_item_ops = &target_core_dev_wwn_ops, | |
969 | .ct_attrs = target_core_dev_wwn_attrs, | |
970 | .ct_owner = THIS_MODULE, | |
971 | }; | |
972 | ||
973 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ | |
974 | ||
975 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ | |
976 | ||
0fd97ccf | 977 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
c66ac9db NB |
978 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
979 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
980 | __CONFIGFS_EATTR(_name, _mode, \ | |
981 | target_core_dev_pr_show_attr_##_name, \ | |
982 | target_core_dev_pr_store_attr_##_name); | |
983 | ||
984 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
985 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
986 | __CONFIGFS_EATTR_RO(_name, \ | |
987 | target_core_dev_pr_show_attr_##_name); | |
988 | ||
d977f437 CH |
989 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
990 | char *page) | |
c66ac9db NB |
991 | { |
992 | struct se_node_acl *se_nacl; | |
993 | struct t10_pr_registration *pr_reg; | |
994 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
995 | |
996 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
997 | ||
c66ac9db | 998 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
999 | if (!pr_reg) |
1000 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
1001 | ||
c66ac9db | 1002 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 1003 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 1004 | |
d977f437 | 1005 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 1006 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 1007 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
1008 | } |
1009 | ||
d977f437 CH |
1010 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
1011 | char *page) | |
c66ac9db NB |
1012 | { |
1013 | struct se_node_acl *se_nacl; | |
d977f437 | 1014 | ssize_t len; |
c66ac9db | 1015 | |
c66ac9db | 1016 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
1017 | if (se_nacl) { |
1018 | len = sprintf(page, | |
1019 | "SPC-2 Reservation: %s Initiator: %s\n", | |
1020 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
1021 | se_nacl->initiatorname); | |
1022 | } else { | |
1023 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1024 | } |
d977f437 | 1025 | return len; |
c66ac9db NB |
1026 | } |
1027 | ||
0fd97ccf CH |
1028 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
1029 | char *page) | |
c66ac9db | 1030 | { |
d977f437 | 1031 | int ret; |
c66ac9db | 1032 | |
d977f437 CH |
1033 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1034 | return sprintf(page, "Passthrough\n"); | |
c66ac9db | 1035 | |
d977f437 CH |
1036 | spin_lock(&dev->dev_reservation_lock); |
1037 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1038 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1039 | else | |
1040 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1041 | spin_unlock(&dev->dev_reservation_lock); | |
1042 | return ret; | |
c66ac9db NB |
1043 | } |
1044 | ||
1045 | SE_DEV_PR_ATTR_RO(res_holder); | |
1046 | ||
c66ac9db | 1047 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
0fd97ccf | 1048 | struct se_device *dev, char *page) |
c66ac9db | 1049 | { |
c66ac9db NB |
1050 | ssize_t len = 0; |
1051 | ||
c66ac9db | 1052 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1053 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1054 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1055 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1056 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1057 | " Ports registration\n"); | |
d977f437 | 1058 | } else { |
c66ac9db NB |
1059 | len = sprintf(page, "SPC-3 Reservation: Single" |
1060 | " Target Port registration\n"); | |
d977f437 | 1061 | } |
c66ac9db | 1062 | |
d977f437 | 1063 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1064 | return len; |
1065 | } | |
1066 | ||
1067 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
1068 | ||
c66ac9db | 1069 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
0fd97ccf | 1070 | struct se_device *dev, char *page) |
c66ac9db | 1071 | { |
0fd97ccf | 1072 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
c66ac9db NB |
1073 | } |
1074 | ||
1075 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
1076 | ||
1077 | /* | |
1078 | * res_pr_holder_tg_port | |
1079 | */ | |
1080 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
0fd97ccf | 1081 | struct se_device *dev, char *page) |
c66ac9db | 1082 | { |
c66ac9db NB |
1083 | struct se_node_acl *se_nacl; |
1084 | struct se_lun *lun; | |
1085 | struct se_portal_group *se_tpg; | |
1086 | struct t10_pr_registration *pr_reg; | |
1087 | struct target_core_fabric_ops *tfo; | |
1088 | ssize_t len = 0; | |
1089 | ||
c66ac9db NB |
1090 | spin_lock(&dev->dev_reservation_lock); |
1091 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1092 | if (!pr_reg) { |
c66ac9db | 1093 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1094 | goto out_unlock; |
c66ac9db | 1095 | } |
d977f437 | 1096 | |
c66ac9db NB |
1097 | se_nacl = pr_reg->pr_reg_nacl; |
1098 | se_tpg = se_nacl->se_tpg; | |
1099 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 1100 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1101 | |
1102 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
1103 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
1104 | tfo->tpg_get_wwn(se_tpg)); | |
1105 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1106 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
c66ac9db NB |
1107 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, |
1108 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
1109 | tfo->get_fabric_name(), lun->unpacked_lun); | |
c66ac9db | 1110 | |
d977f437 CH |
1111 | out_unlock: |
1112 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1113 | return len; |
1114 | } | |
1115 | ||
1116 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
1117 | ||
c66ac9db | 1118 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
0fd97ccf | 1119 | struct se_device *dev, char *page) |
c66ac9db NB |
1120 | { |
1121 | struct target_core_fabric_ops *tfo; | |
1122 | struct t10_pr_registration *pr_reg; | |
1123 | unsigned char buf[384]; | |
1124 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1125 | ssize_t len = 0; | |
d2843c17 | 1126 | int reg_count = 0; |
c66ac9db | 1127 | |
c66ac9db NB |
1128 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1129 | ||
0fd97ccf CH |
1130 | spin_lock(&dev->t10_pr.registration_lock); |
1131 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1132 | pr_reg_list) { |
1133 | ||
1134 | memset(buf, 0, 384); | |
1135 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1136 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 1137 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
1138 | PR_REG_ISID_ID_LEN); |
1139 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1140 | tfo->get_fabric_name(), | |
d2843c17 | 1141 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1142 | pr_reg->pr_res_generation); |
1143 | ||
6708bb27 | 1144 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1145 | break; |
1146 | ||
1147 | len += sprintf(page+len, "%s", buf); | |
1148 | reg_count++; | |
1149 | } | |
0fd97ccf | 1150 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1151 | |
6708bb27 | 1152 | if (!reg_count) |
c66ac9db NB |
1153 | len += sprintf(page+len, "None\n"); |
1154 | ||
1155 | return len; | |
1156 | } | |
1157 | ||
1158 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1159 | ||
c66ac9db | 1160 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
0fd97ccf | 1161 | struct se_device *dev, char *page) |
c66ac9db | 1162 | { |
c66ac9db NB |
1163 | struct t10_pr_registration *pr_reg; |
1164 | ssize_t len = 0; | |
1165 | ||
c66ac9db NB |
1166 | spin_lock(&dev->dev_reservation_lock); |
1167 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1168 | if (pr_reg) { |
1169 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1170 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1171 | } else { | |
c66ac9db | 1172 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1173 | } |
c66ac9db | 1174 | |
d977f437 | 1175 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1176 | return len; |
1177 | } | |
1178 | ||
1179 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1180 | ||
c66ac9db | 1181 | static ssize_t target_core_dev_pr_show_attr_res_type( |
0fd97ccf | 1182 | struct se_device *dev, char *page) |
c66ac9db | 1183 | { |
d977f437 CH |
1184 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1185 | return sprintf(page, "SPC_PASSTHROUGH\n"); | |
1186 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1187 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1188 | else | |
1189 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1190 | } |
1191 | ||
1192 | SE_DEV_PR_ATTR_RO(res_type); | |
1193 | ||
c66ac9db | 1194 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
0fd97ccf | 1195 | struct se_device *dev, char *page) |
c66ac9db | 1196 | { |
d977f437 | 1197 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1198 | return 0; |
1199 | ||
1200 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1201 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1202 | } |
1203 | ||
1204 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1205 | ||
1206 | /* | |
1207 | * res_aptpl_metadata | |
1208 | */ | |
1209 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
0fd97ccf | 1210 | struct se_device *dev, char *page) |
c66ac9db | 1211 | { |
d977f437 | 1212 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1213 | return 0; |
1214 | ||
1215 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1216 | } | |
1217 | ||
1218 | enum { | |
1219 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1220 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1221 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1222 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1223 | }; | |
1224 | ||
1225 | static match_table_t tokens = { | |
1226 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1227 | {Opt_initiator_node, "initiator_node=%s"}, | |
1228 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1229 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1230 | {Opt_res_holder, "res_holder=%d"}, | |
1231 | {Opt_res_type, "res_type=%d"}, | |
1232 | {Opt_res_scope, "res_scope=%d"}, | |
1233 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1234 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1235 | {Opt_target_fabric, "target_fabric=%s"}, | |
1236 | {Opt_target_node, "target_node=%s"}, | |
1237 | {Opt_tpgt, "tpgt=%d"}, | |
1238 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1239 | {Opt_target_lun, "target_lun=%d"}, | |
1240 | {Opt_err, NULL} | |
1241 | }; | |
1242 | ||
1243 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
0fd97ccf | 1244 | struct se_device *dev, |
c66ac9db NB |
1245 | const char *page, |
1246 | size_t count) | |
1247 | { | |
6d180253 JJ |
1248 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1249 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
c66ac9db NB |
1250 | char *orig, *ptr, *arg_p, *opts; |
1251 | substring_t args[MAX_OPT_ARGS]; | |
1252 | unsigned long long tmp_ll; | |
1253 | u64 sa_res_key = 0; | |
1254 | u32 mapped_lun = 0, target_lun = 0; | |
1255 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1256 | u16 port_rpti = 0, tpgt = 0; | |
1257 | u8 type = 0, scope; | |
1258 | ||
d977f437 CH |
1259 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1260 | return 0; | |
1261 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
c66ac9db NB |
1262 | return 0; |
1263 | ||
0fd97ccf | 1264 | if (dev->export_count) { |
6708bb27 | 1265 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1266 | " active fabric exports exist\n"); |
1267 | return -EINVAL; | |
1268 | } | |
1269 | ||
1270 | opts = kstrdup(page, GFP_KERNEL); | |
1271 | if (!opts) | |
1272 | return -ENOMEM; | |
1273 | ||
1274 | orig = opts; | |
90c161b6 | 1275 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1276 | if (!*ptr) |
1277 | continue; | |
1278 | ||
1279 | token = match_token(ptr, tokens, args); | |
1280 | switch (token) { | |
1281 | case Opt_initiator_fabric: | |
1282 | i_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1283 | if (!i_fabric) { |
1284 | ret = -ENOMEM; | |
1285 | goto out; | |
1286 | } | |
c66ac9db NB |
1287 | break; |
1288 | case Opt_initiator_node: | |
1289 | i_port = match_strdup(&args[0]); | |
6d180253 JJ |
1290 | if (!i_port) { |
1291 | ret = -ENOMEM; | |
1292 | goto out; | |
1293 | } | |
60d645a4 | 1294 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1295 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1296 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1297 | PR_APTPL_MAX_IPORT_LEN); | |
1298 | ret = -EINVAL; | |
1299 | break; | |
1300 | } | |
1301 | break; | |
1302 | case Opt_initiator_sid: | |
1303 | isid = match_strdup(&args[0]); | |
6d180253 JJ |
1304 | if (!isid) { |
1305 | ret = -ENOMEM; | |
1306 | goto out; | |
1307 | } | |
60d645a4 | 1308 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1309 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1310 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1311 | PR_REG_ISID_LEN); | |
1312 | ret = -EINVAL; | |
1313 | break; | |
1314 | } | |
1315 | break; | |
1316 | case Opt_sa_res_key: | |
1317 | arg_p = match_strdup(&args[0]); | |
6d180253 JJ |
1318 | if (!arg_p) { |
1319 | ret = -ENOMEM; | |
1320 | goto out; | |
1321 | } | |
57103d7f | 1322 | ret = kstrtoull(arg_p, 0, &tmp_ll); |
c66ac9db | 1323 | if (ret < 0) { |
57103d7f | 1324 | pr_err("kstrtoull() failed for" |
c66ac9db NB |
1325 | " sa_res_key=\n"); |
1326 | goto out; | |
1327 | } | |
1328 | sa_res_key = (u64)tmp_ll; | |
1329 | break; | |
1330 | /* | |
1331 | * PR APTPL Metadata for Reservation | |
1332 | */ | |
1333 | case Opt_res_holder: | |
1334 | match_int(args, &arg); | |
1335 | res_holder = arg; | |
1336 | break; | |
1337 | case Opt_res_type: | |
1338 | match_int(args, &arg); | |
1339 | type = (u8)arg; | |
1340 | break; | |
1341 | case Opt_res_scope: | |
1342 | match_int(args, &arg); | |
1343 | scope = (u8)arg; | |
1344 | break; | |
1345 | case Opt_res_all_tg_pt: | |
1346 | match_int(args, &arg); | |
1347 | all_tg_pt = (int)arg; | |
1348 | break; | |
1349 | case Opt_mapped_lun: | |
1350 | match_int(args, &arg); | |
1351 | mapped_lun = (u32)arg; | |
1352 | break; | |
1353 | /* | |
1354 | * PR APTPL Metadata for Target Port | |
1355 | */ | |
1356 | case Opt_target_fabric: | |
1357 | t_fabric = match_strdup(&args[0]); | |
6d180253 JJ |
1358 | if (!t_fabric) { |
1359 | ret = -ENOMEM; | |
1360 | goto out; | |
1361 | } | |
c66ac9db NB |
1362 | break; |
1363 | case Opt_target_node: | |
1364 | t_port = match_strdup(&args[0]); | |
6d180253 JJ |
1365 | if (!t_port) { |
1366 | ret = -ENOMEM; | |
1367 | goto out; | |
1368 | } | |
60d645a4 | 1369 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1370 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1371 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1372 | PR_APTPL_MAX_TPORT_LEN); | |
1373 | ret = -EINVAL; | |
1374 | break; | |
1375 | } | |
1376 | break; | |
1377 | case Opt_tpgt: | |
1378 | match_int(args, &arg); | |
1379 | tpgt = (u16)arg; | |
1380 | break; | |
1381 | case Opt_port_rtpi: | |
1382 | match_int(args, &arg); | |
1383 | port_rpti = (u16)arg; | |
1384 | break; | |
1385 | case Opt_target_lun: | |
1386 | match_int(args, &arg); | |
1387 | target_lun = (u32)arg; | |
1388 | break; | |
1389 | default: | |
1390 | break; | |
1391 | } | |
1392 | } | |
1393 | ||
6708bb27 AG |
1394 | if (!i_port || !t_port || !sa_res_key) { |
1395 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1396 | ret = -EINVAL; |
1397 | goto out; | |
1398 | } | |
1399 | ||
1400 | if (res_holder && !(type)) { | |
6708bb27 | 1401 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1402 | " holder\n", type); |
1403 | ret = -EINVAL; | |
1404 | goto out; | |
1405 | } | |
1406 | ||
0fd97ccf | 1407 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1408 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1409 | res_holder, all_tg_pt, type); | |
1410 | out: | |
6d180253 JJ |
1411 | kfree(i_fabric); |
1412 | kfree(i_port); | |
1413 | kfree(isid); | |
1414 | kfree(t_fabric); | |
1415 | kfree(t_port); | |
c66ac9db NB |
1416 | kfree(orig); |
1417 | return (ret == 0) ? count : ret; | |
1418 | } | |
1419 | ||
1420 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1421 | ||
0fd97ccf | 1422 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
c66ac9db NB |
1423 | |
1424 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1425 | &target_core_dev_pr_res_holder.attr, | |
1426 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1427 | &target_core_dev_pr_res_pr_generation.attr, | |
1428 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1429 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1430 | &target_core_dev_pr_res_pr_type.attr, | |
1431 | &target_core_dev_pr_res_type.attr, | |
1432 | &target_core_dev_pr_res_aptpl_active.attr, | |
1433 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1434 | NULL, | |
1435 | }; | |
1436 | ||
1437 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1438 | .show_attribute = target_core_dev_pr_attr_show, | |
1439 | .store_attribute = target_core_dev_pr_attr_store, | |
1440 | }; | |
1441 | ||
1442 | static struct config_item_type target_core_dev_pr_cit = { | |
1443 | .ct_item_ops = &target_core_dev_pr_ops, | |
1444 | .ct_attrs = target_core_dev_pr_attrs, | |
1445 | .ct_owner = THIS_MODULE, | |
1446 | }; | |
1447 | ||
1448 | /* End functions for struct config_item_type target_core_dev_pr_cit */ | |
1449 | ||
1450 | /* Start functions for struct config_item_type target_core_dev_cit */ | |
1451 | ||
1452 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1453 | { | |
0fd97ccf CH |
1454 | struct se_device *dev = p; |
1455 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db NB |
1456 | int bl = 0; |
1457 | ssize_t read_bytes = 0; | |
1458 | ||
0fd97ccf | 1459 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1460 | read_bytes += bl; |
0fd97ccf | 1461 | read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); |
c66ac9db NB |
1462 | return read_bytes; |
1463 | } | |
1464 | ||
1465 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1466 | .attr = { .ca_owner = THIS_MODULE, | |
1467 | .ca_name = "info", | |
1468 | .ca_mode = S_IRUGO }, | |
1469 | .show = target_core_show_dev_info, | |
1470 | .store = NULL, | |
1471 | }; | |
1472 | ||
1473 | static ssize_t target_core_store_dev_control( | |
1474 | void *p, | |
1475 | const char *page, | |
1476 | size_t count) | |
1477 | { | |
0fd97ccf CH |
1478 | struct se_device *dev = p; |
1479 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db | 1480 | |
0fd97ccf | 1481 | return t->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1482 | } |
1483 | ||
1484 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1485 | .attr = { .ca_owner = THIS_MODULE, | |
1486 | .ca_name = "control", | |
1487 | .ca_mode = S_IWUSR }, | |
1488 | .show = NULL, | |
1489 | .store = target_core_store_dev_control, | |
1490 | }; | |
1491 | ||
1492 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1493 | { | |
0fd97ccf | 1494 | struct se_device *dev = p; |
c66ac9db | 1495 | |
0fd97ccf | 1496 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1497 | return 0; |
1498 | ||
0fd97ccf | 1499 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1500 | } |
1501 | ||
1502 | static ssize_t target_core_store_dev_alias( | |
1503 | void *p, | |
1504 | const char *page, | |
1505 | size_t count) | |
1506 | { | |
0fd97ccf CH |
1507 | struct se_device *dev = p; |
1508 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1509 | ssize_t read_bytes; |
1510 | ||
1511 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1512 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1513 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1514 | SE_DEV_ALIAS_LEN-1); | |
1515 | return -EINVAL; | |
1516 | } | |
1517 | ||
0fd97ccf | 1518 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1519 | if (!read_bytes) |
1520 | return -EINVAL; | |
0fd97ccf CH |
1521 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1522 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1523 | |
0fd97ccf | 1524 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1525 | |
6708bb27 | 1526 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1527 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1528 | config_item_name(&dev->dev_group.cg_item), |
1529 | dev->dev_alias); | |
c66ac9db NB |
1530 | |
1531 | return read_bytes; | |
1532 | } | |
1533 | ||
1534 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1535 | .attr = { .ca_owner = THIS_MODULE, | |
1536 | .ca_name = "alias", | |
1537 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1538 | .show = target_core_show_dev_alias, | |
1539 | .store = target_core_store_dev_alias, | |
1540 | }; | |
1541 | ||
1542 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1543 | { | |
0fd97ccf | 1544 | struct se_device *dev = p; |
c66ac9db | 1545 | |
0fd97ccf | 1546 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1547 | return 0; |
1548 | ||
0fd97ccf | 1549 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1550 | } |
1551 | ||
1552 | static ssize_t target_core_store_dev_udev_path( | |
1553 | void *p, | |
1554 | const char *page, | |
1555 | size_t count) | |
1556 | { | |
0fd97ccf CH |
1557 | struct se_device *dev = p; |
1558 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1559 | ssize_t read_bytes; |
1560 | ||
1561 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1562 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1563 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1564 | SE_UDEV_PATH_LEN-1); | |
1565 | return -EINVAL; | |
1566 | } | |
1567 | ||
0fd97ccf | 1568 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1569 | "%s", page); |
3011684c DC |
1570 | if (!read_bytes) |
1571 | return -EINVAL; | |
0fd97ccf CH |
1572 | if (dev->udev_path[read_bytes - 1] == '\n') |
1573 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1574 | |
0fd97ccf | 1575 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1576 | |
6708bb27 | 1577 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1578 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1579 | config_item_name(&dev->dev_group.cg_item), |
1580 | dev->udev_path); | |
c66ac9db NB |
1581 | |
1582 | return read_bytes; | |
1583 | } | |
1584 | ||
1585 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1586 | .attr = { .ca_owner = THIS_MODULE, | |
1587 | .ca_name = "udev_path", | |
1588 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1589 | .show = target_core_show_dev_udev_path, | |
1590 | .store = target_core_store_dev_udev_path, | |
1591 | }; | |
1592 | ||
64146db7 AG |
1593 | static ssize_t target_core_show_dev_enable(void *p, char *page) |
1594 | { | |
1595 | struct se_device *dev = p; | |
1596 | ||
1597 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); | |
1598 | } | |
1599 | ||
c66ac9db NB |
1600 | static ssize_t target_core_store_dev_enable( |
1601 | void *p, | |
1602 | const char *page, | |
1603 | size_t count) | |
1604 | { | |
0fd97ccf | 1605 | struct se_device *dev = p; |
c66ac9db | 1606 | char *ptr; |
0fd97ccf | 1607 | int ret; |
c66ac9db NB |
1608 | |
1609 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1610 | if (!ptr) { |
1611 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1612 | " is \"1\"\n"); |
1613 | return -EINVAL; | |
1614 | } | |
c66ac9db | 1615 | |
0fd97ccf CH |
1616 | ret = target_configure_device(dev); |
1617 | if (ret) | |
1618 | return ret; | |
c66ac9db NB |
1619 | return count; |
1620 | } | |
1621 | ||
1622 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1623 | .attr = { .ca_owner = THIS_MODULE, | |
1624 | .ca_name = "enable", | |
64146db7 AG |
1625 | .ca_mode = S_IRUGO | S_IWUSR }, |
1626 | .show = target_core_show_dev_enable, | |
c66ac9db NB |
1627 | .store = target_core_store_dev_enable, |
1628 | }; | |
1629 | ||
1630 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1631 | { | |
0fd97ccf | 1632 | struct se_device *dev = p; |
c66ac9db NB |
1633 | struct config_item *lu_ci; |
1634 | struct t10_alua_lu_gp *lu_gp; | |
1635 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1636 | ssize_t len = 0; | |
1637 | ||
c66ac9db | 1638 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1639 | if (!lu_gp_mem) |
1640 | return 0; | |
c66ac9db NB |
1641 | |
1642 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1643 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1644 | if (lu_gp) { |
c66ac9db NB |
1645 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1646 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1647 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1648 | } | |
1649 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1650 | ||
1651 | return len; | |
1652 | } | |
1653 | ||
1654 | static ssize_t target_core_store_alua_lu_gp( | |
1655 | void *p, | |
1656 | const char *page, | |
1657 | size_t count) | |
1658 | { | |
0fd97ccf CH |
1659 | struct se_device *dev = p; |
1660 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1661 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
1662 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1663 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1664 | int move = 0; | |
1665 | ||
c87fbd56 CH |
1666 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
1667 | if (!lu_gp_mem) | |
1668 | return 0; | |
1669 | ||
c66ac9db | 1670 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 1671 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1672 | return -EINVAL; |
1673 | } | |
1674 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1675 | memcpy(buf, page, count); | |
1676 | /* | |
1677 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1678 | * making a new group association. | |
1679 | */ | |
1680 | if (strcmp(strstrip(buf), "NULL")) { | |
1681 | /* | |
1682 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1683 | * struct t10_alua_lu_gp. This reference is released with | |
1684 | * core_alua_get_lu_gp_by_name below(). | |
1685 | */ | |
1686 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1687 | if (!lu_gp_new) |
c66ac9db NB |
1688 | return -ENODEV; |
1689 | } | |
c66ac9db NB |
1690 | |
1691 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1692 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1693 | if (lu_gp) { |
c66ac9db NB |
1694 | /* |
1695 | * Clearing an existing lu_gp association, and replacing | |
1696 | * with NULL | |
1697 | */ | |
6708bb27 AG |
1698 | if (!lu_gp_new) { |
1699 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1700 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1701 | " %hu\n", | |
1702 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1703 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1704 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
1705 | lu_gp->lu_gp_id); | |
1706 | ||
1707 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1708 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1709 | ||
1710 | return count; | |
1711 | } | |
1712 | /* | |
1713 | * Removing existing association of lu_gp_mem with lu_gp | |
1714 | */ | |
1715 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1716 | move = 1; | |
1717 | } | |
1718 | /* | |
1719 | * Associate lu_gp_mem with lu_gp_new. | |
1720 | */ | |
1721 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1722 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1723 | ||
6708bb27 | 1724 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1725 | " core/alua/lu_gps/%s, ID: %hu\n", |
1726 | (move) ? "Moving" : "Adding", | |
1727 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1728 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1729 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
1730 | lu_gp_new->lu_gp_id); | |
1731 | ||
1732 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1733 | return count; | |
1734 | } | |
1735 | ||
1736 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1737 | .attr = { .ca_owner = THIS_MODULE, | |
1738 | .ca_name = "alua_lu_gp", | |
1739 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1740 | .show = target_core_show_alua_lu_gp, | |
1741 | .store = target_core_store_alua_lu_gp, | |
1742 | }; | |
1743 | ||
1744 | static struct configfs_attribute *lio_core_dev_attrs[] = { | |
1745 | &target_core_attr_dev_info.attr, | |
1746 | &target_core_attr_dev_control.attr, | |
1747 | &target_core_attr_dev_alias.attr, | |
1748 | &target_core_attr_dev_udev_path.attr, | |
1749 | &target_core_attr_dev_enable.attr, | |
1750 | &target_core_attr_dev_alua_lu_gp.attr, | |
1751 | NULL, | |
1752 | }; | |
1753 | ||
1754 | static void target_core_dev_release(struct config_item *item) | |
1755 | { | |
0fd97ccf CH |
1756 | struct config_group *dev_cg = to_config_group(item); |
1757 | struct se_device *dev = | |
1758 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 1759 | |
c66ac9db | 1760 | kfree(dev_cg->default_groups); |
0fd97ccf | 1761 | target_free_device(dev); |
c66ac9db NB |
1762 | } |
1763 | ||
1764 | static ssize_t target_core_dev_show(struct config_item *item, | |
1765 | struct configfs_attribute *attr, | |
1766 | char *page) | |
1767 | { | |
0fd97ccf CH |
1768 | struct config_group *dev_cg = to_config_group(item); |
1769 | struct se_device *dev = | |
1770 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1771 | struct target_core_configfs_attribute *tc_attr = container_of( |
1772 | attr, struct target_core_configfs_attribute, attr); | |
1773 | ||
6708bb27 | 1774 | if (!tc_attr->show) |
c66ac9db NB |
1775 | return -EINVAL; |
1776 | ||
0fd97ccf | 1777 | return tc_attr->show(dev, page); |
c66ac9db NB |
1778 | } |
1779 | ||
1780 | static ssize_t target_core_dev_store(struct config_item *item, | |
1781 | struct configfs_attribute *attr, | |
1782 | const char *page, size_t count) | |
1783 | { | |
0fd97ccf CH |
1784 | struct config_group *dev_cg = to_config_group(item); |
1785 | struct se_device *dev = | |
1786 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1787 | struct target_core_configfs_attribute *tc_attr = container_of( |
1788 | attr, struct target_core_configfs_attribute, attr); | |
1789 | ||
6708bb27 | 1790 | if (!tc_attr->store) |
c66ac9db NB |
1791 | return -EINVAL; |
1792 | ||
0fd97ccf | 1793 | return tc_attr->store(dev, page, count); |
c66ac9db NB |
1794 | } |
1795 | ||
1796 | static struct configfs_item_operations target_core_dev_item_ops = { | |
1797 | .release = target_core_dev_release, | |
1798 | .show_attribute = target_core_dev_show, | |
1799 | .store_attribute = target_core_dev_store, | |
1800 | }; | |
1801 | ||
1802 | static struct config_item_type target_core_dev_cit = { | |
1803 | .ct_item_ops = &target_core_dev_item_ops, | |
1804 | .ct_attrs = lio_core_dev_attrs, | |
1805 | .ct_owner = THIS_MODULE, | |
1806 | }; | |
1807 | ||
1808 | /* End functions for struct config_item_type target_core_dev_cit */ | |
1809 | ||
1810 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1811 | ||
1812 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
1813 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
1814 | static struct target_core_alua_lu_gp_attribute \ | |
1815 | target_core_alua_lu_gp_##_name = \ | |
1816 | __CONFIGFS_EATTR(_name, _mode, \ | |
1817 | target_core_alua_lu_gp_show_attr_##_name, \ | |
1818 | target_core_alua_lu_gp_store_attr_##_name); | |
1819 | ||
1820 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
1821 | static struct target_core_alua_lu_gp_attribute \ | |
1822 | target_core_alua_lu_gp_##_name = \ | |
1823 | __CONFIGFS_EATTR_RO(_name, \ | |
1824 | target_core_alua_lu_gp_show_attr_##_name); | |
1825 | ||
1826 | /* | |
1827 | * lu_gp_id | |
1828 | */ | |
1829 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
1830 | struct t10_alua_lu_gp *lu_gp, | |
1831 | char *page) | |
1832 | { | |
6708bb27 | 1833 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
1834 | return 0; |
1835 | ||
1836 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
1837 | } | |
1838 | ||
1839 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
1840 | struct t10_alua_lu_gp *lu_gp, | |
1841 | const char *page, | |
1842 | size_t count) | |
1843 | { | |
1844 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1845 | unsigned long lu_gp_id; | |
1846 | int ret; | |
1847 | ||
57103d7f | 1848 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 1849 | if (ret < 0) { |
57103d7f | 1850 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 1851 | " lu_gp_id\n", ret); |
57103d7f | 1852 | return ret; |
c66ac9db NB |
1853 | } |
1854 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 1855 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
1856 | " 0x0000ffff\n", lu_gp_id); |
1857 | return -EINVAL; | |
1858 | } | |
1859 | ||
1860 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
1861 | if (ret < 0) | |
1862 | return -EINVAL; | |
1863 | ||
6708bb27 | 1864 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
1865 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
1866 | config_item_name(&alua_lu_gp_cg->cg_item), | |
1867 | lu_gp->lu_gp_id); | |
1868 | ||
1869 | return count; | |
1870 | } | |
1871 | ||
1872 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
1873 | ||
1874 | /* | |
1875 | * members | |
1876 | */ | |
1877 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
1878 | struct t10_alua_lu_gp *lu_gp, | |
1879 | char *page) | |
1880 | { | |
1881 | struct se_device *dev; | |
1882 | struct se_hba *hba; | |
c66ac9db NB |
1883 | struct t10_alua_lu_gp_member *lu_gp_mem; |
1884 | ssize_t len = 0, cur_len; | |
1885 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1886 | ||
1887 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1888 | ||
1889 | spin_lock(&lu_gp->lu_gp_lock); | |
1890 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
1891 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 1892 | hba = dev->se_hba; |
c66ac9db NB |
1893 | |
1894 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
1895 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1896 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
1897 | cur_len++; /* Extra byte for NULL terminator */ |
1898 | ||
1899 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 1900 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
1901 | "_members buffer\n"); |
1902 | break; | |
1903 | } | |
1904 | memcpy(page+len, buf, cur_len); | |
1905 | len += cur_len; | |
1906 | } | |
1907 | spin_unlock(&lu_gp->lu_gp_lock); | |
1908 | ||
1909 | return len; | |
1910 | } | |
1911 | ||
1912 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
1913 | ||
1914 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
1915 | ||
1916 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
1917 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
1918 | &target_core_alua_lu_gp_members.attr, | |
1919 | NULL, | |
1920 | }; | |
1921 | ||
1f6fe7cb NB |
1922 | static void target_core_alua_lu_gp_release(struct config_item *item) |
1923 | { | |
1924 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1925 | struct t10_alua_lu_gp, lu_gp_group); | |
1926 | ||
1927 | core_alua_free_lu_gp(lu_gp); | |
1928 | } | |
1929 | ||
c66ac9db | 1930 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 1931 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
1932 | .show_attribute = target_core_alua_lu_gp_attr_show, |
1933 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
1934 | }; | |
1935 | ||
1936 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
1937 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
1938 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
1939 | .ct_owner = THIS_MODULE, | |
1940 | }; | |
1941 | ||
1942 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1943 | ||
1944 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
1945 | ||
1946 | static struct config_group *target_core_alua_create_lu_gp( | |
1947 | struct config_group *group, | |
1948 | const char *name) | |
1949 | { | |
1950 | struct t10_alua_lu_gp *lu_gp; | |
1951 | struct config_group *alua_lu_gp_cg = NULL; | |
1952 | struct config_item *alua_lu_gp_ci = NULL; | |
1953 | ||
1954 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
1955 | if (IS_ERR(lu_gp)) | |
1956 | return NULL; | |
1957 | ||
1958 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1959 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
1960 | ||
1961 | config_group_init_type_name(alua_lu_gp_cg, name, | |
1962 | &target_core_alua_lu_gp_cit); | |
1963 | ||
6708bb27 | 1964 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
1965 | " Group: core/alua/lu_gps/%s\n", |
1966 | config_item_name(alua_lu_gp_ci)); | |
1967 | ||
1968 | return alua_lu_gp_cg; | |
1969 | ||
1970 | } | |
1971 | ||
1972 | static void target_core_alua_drop_lu_gp( | |
1973 | struct config_group *group, | |
1974 | struct config_item *item) | |
1975 | { | |
1976 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1977 | struct t10_alua_lu_gp, lu_gp_group); | |
1978 | ||
6708bb27 | 1979 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
1980 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
1981 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
1982 | /* |
1983 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
1984 | * -> target_core_alua_lu_gp_release() | |
1985 | */ | |
c66ac9db | 1986 | config_item_put(item); |
c66ac9db NB |
1987 | } |
1988 | ||
1989 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
1990 | .make_group = &target_core_alua_create_lu_gp, | |
1991 | .drop_item = &target_core_alua_drop_lu_gp, | |
1992 | }; | |
1993 | ||
1994 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
1995 | .ct_item_ops = NULL, | |
1996 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
1997 | .ct_owner = THIS_MODULE, | |
1998 | }; | |
1999 | ||
2000 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2001 | ||
2002 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2003 | ||
2004 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2005 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2006 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2007 | target_core_alua_tg_pt_gp_##_name = \ | |
2008 | __CONFIGFS_EATTR(_name, _mode, \ | |
2009 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2010 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2011 | ||
2012 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2013 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2014 | target_core_alua_tg_pt_gp_##_name = \ | |
2015 | __CONFIGFS_EATTR_RO(_name, \ | |
2016 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2017 | ||
2018 | /* | |
2019 | * alua_access_state | |
2020 | */ | |
2021 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2022 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2023 | char *page) | |
2024 | { | |
2025 | return sprintf(page, "%d\n", | |
2026 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2027 | } | |
2028 | ||
2029 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2030 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2031 | const char *page, | |
2032 | size_t count) | |
2033 | { | |
0fd97ccf | 2034 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2035 | unsigned long tmp; |
2036 | int new_state, ret; | |
2037 | ||
6708bb27 | 2038 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2039 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2040 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2041 | return -EINVAL; | |
2042 | } | |
2043 | ||
57103d7f | 2044 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2045 | if (ret < 0) { |
6708bb27 | 2046 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2047 | " %s\n", page); |
57103d7f | 2048 | return ret; |
c66ac9db NB |
2049 | } |
2050 | new_state = (int)tmp; | |
2051 | ||
125d0119 HR |
2052 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2053 | pr_err("Unable to process implicit configfs ALUA" | |
2054 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2055 | return -EINVAL; |
2056 | } | |
2057 | ||
0fd97ccf | 2058 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2059 | NULL, NULL, new_state, 0); |
2060 | return (!ret) ? count : -EINVAL; | |
2061 | } | |
2062 | ||
2063 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2064 | ||
2065 | /* | |
2066 | * alua_access_status | |
2067 | */ | |
2068 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2069 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2070 | char *page) | |
2071 | { | |
2072 | return sprintf(page, "%s\n", | |
2073 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2074 | } | |
2075 | ||
2076 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2077 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2078 | const char *page, | |
2079 | size_t count) | |
2080 | { | |
2081 | unsigned long tmp; | |
2082 | int new_status, ret; | |
2083 | ||
6708bb27 AG |
2084 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2085 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2086 | " valid tg_pt_gp ID: %hu\n", |
2087 | tg_pt_gp->tg_pt_gp_valid_id); | |
2088 | return -EINVAL; | |
2089 | } | |
2090 | ||
57103d7f | 2091 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2092 | if (ret < 0) { |
6708bb27 | 2093 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2094 | " from %s\n", page); |
57103d7f | 2095 | return ret; |
c66ac9db NB |
2096 | } |
2097 | new_status = (int)tmp; | |
2098 | ||
2099 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2100 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2101 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2102 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2103 | new_status); |
2104 | return -EINVAL; | |
2105 | } | |
2106 | ||
2107 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2108 | return count; | |
2109 | } | |
2110 | ||
2111 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2112 | ||
2113 | /* | |
2114 | * alua_access_type | |
2115 | */ | |
2116 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2117 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2118 | char *page) | |
2119 | { | |
2120 | return core_alua_show_access_type(tg_pt_gp, page); | |
2121 | } | |
2122 | ||
2123 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2124 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2125 | const char *page, | |
2126 | size_t count) | |
2127 | { | |
2128 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2129 | } | |
2130 | ||
2131 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2132 | ||
6be526c4 HR |
2133 | /* |
2134 | * alua_supported_states | |
2135 | */ | |
2136 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_supported_states( | |
2137 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2138 | char *page) | |
2139 | { | |
2140 | return sprintf(page, "%02x\n", | |
2141 | tg_pt_gp->tg_pt_gp_alua_supported_states); | |
2142 | } | |
2143 | ||
2144 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_supported_states( | |
2145 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2146 | const char *page, | |
2147 | size_t count) | |
2148 | { | |
2149 | unsigned long tmp; | |
2150 | int new_states, valid_states, ret; | |
2151 | ||
2152 | if (!tg_pt_gp->tg_pt_gp_valid_id) { | |
2153 | pr_err("Unable to do set supported ALUA states on non" | |
2154 | " valid tg_pt_gp ID: %hu\n", | |
2155 | tg_pt_gp->tg_pt_gp_valid_id); | |
2156 | return -EINVAL; | |
2157 | } | |
2158 | ||
2159 | ret = strict_strtoul(page, 0, &tmp); | |
2160 | if (ret < 0) { | |
2161 | pr_err("Unable to extract new supported ALUA states" | |
2162 | " from %s\n", page); | |
2163 | return -EINVAL; | |
2164 | } | |
2165 | new_states = (int)tmp; | |
2166 | valid_states = ALUA_T_SUP | ALUA_O_SUP | ALUA_LBD_SUP | \ | |
2167 | ALUA_U_SUP | ALUA_S_SUP | ALUA_AN_SUP | ALUA_AO_SUP; | |
2168 | ||
2169 | ||
2170 | if (new_states & ~valid_states) { | |
2171 | pr_err("Illegal supported ALUA states: 0x%02x\n", | |
2172 | new_states); | |
2173 | return -EINVAL; | |
2174 | } | |
2175 | ||
2176 | tg_pt_gp->tg_pt_gp_alua_supported_states = new_states; | |
2177 | return count; | |
2178 | } | |
2179 | ||
2180 | SE_DEV_ALUA_TG_PT_ATTR(alua_supported_states, S_IRUGO | S_IWUSR); | |
2181 | ||
c66ac9db NB |
2182 | /* |
2183 | * alua_write_metadata | |
2184 | */ | |
2185 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2186 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2187 | char *page) | |
2188 | { | |
2189 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2190 | } | |
2191 | ||
2192 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2193 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2194 | const char *page, | |
2195 | size_t count) | |
2196 | { | |
2197 | unsigned long tmp; | |
2198 | int ret; | |
2199 | ||
57103d7f | 2200 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2201 | if (ret < 0) { |
6708bb27 | 2202 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2203 | return ret; |
c66ac9db NB |
2204 | } |
2205 | ||
2206 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2207 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2208 | " %lu\n", tmp); |
2209 | return -EINVAL; | |
2210 | } | |
2211 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2212 | ||
2213 | return count; | |
2214 | } | |
2215 | ||
2216 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2217 | ||
2218 | ||
2219 | ||
2220 | /* | |
2221 | * nonop_delay_msecs | |
2222 | */ | |
2223 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2224 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2225 | char *page) | |
2226 | { | |
2227 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2228 | ||
2229 | } | |
2230 | ||
2231 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2232 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2233 | const char *page, | |
2234 | size_t count) | |
2235 | { | |
2236 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2237 | } | |
2238 | ||
2239 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2240 | ||
2241 | /* | |
2242 | * trans_delay_msecs | |
2243 | */ | |
2244 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2245 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2246 | char *page) | |
2247 | { | |
2248 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2249 | } | |
2250 | ||
2251 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2252 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2253 | const char *page, | |
2254 | size_t count) | |
2255 | { | |
2256 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2257 | } | |
2258 | ||
2259 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2260 | ||
5b9a4d72 | 2261 | /* |
125d0119 | 2262 | * implicit_trans_secs |
5b9a4d72 | 2263 | */ |
125d0119 | 2264 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( |
5b9a4d72 NB |
2265 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2266 | char *page) | |
2267 | { | |
125d0119 | 2268 | return core_alua_show_implicit_trans_secs(tg_pt_gp, page); |
5b9a4d72 NB |
2269 | } |
2270 | ||
125d0119 | 2271 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( |
5b9a4d72 NB |
2272 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2273 | const char *page, | |
2274 | size_t count) | |
2275 | { | |
125d0119 | 2276 | return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); |
5b9a4d72 NB |
2277 | } |
2278 | ||
125d0119 | 2279 | SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); |
5b9a4d72 | 2280 | |
c66ac9db NB |
2281 | /* |
2282 | * preferred | |
2283 | */ | |
2284 | ||
2285 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2286 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2287 | char *page) | |
2288 | { | |
2289 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2290 | } | |
2291 | ||
2292 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2293 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2294 | const char *page, | |
2295 | size_t count) | |
2296 | { | |
2297 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2298 | } | |
2299 | ||
2300 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2301 | ||
2302 | /* | |
2303 | * tg_pt_gp_id | |
2304 | */ | |
2305 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2306 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2307 | char *page) | |
2308 | { | |
6708bb27 | 2309 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2310 | return 0; |
2311 | ||
2312 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2313 | } | |
2314 | ||
2315 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2316 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2317 | const char *page, | |
2318 | size_t count) | |
2319 | { | |
2320 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2321 | unsigned long tg_pt_gp_id; | |
2322 | int ret; | |
2323 | ||
57103d7f | 2324 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2325 | if (ret < 0) { |
57103d7f | 2326 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2327 | " tg_pt_gp_id\n", ret); |
57103d7f | 2328 | return ret; |
c66ac9db NB |
2329 | } |
2330 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2331 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2332 | " 0x0000ffff\n", tg_pt_gp_id); |
2333 | return -EINVAL; | |
2334 | } | |
2335 | ||
2336 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2337 | if (ret < 0) | |
2338 | return -EINVAL; | |
2339 | ||
6708bb27 | 2340 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2341 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2342 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2343 | tg_pt_gp->tg_pt_gp_id); | |
2344 | ||
2345 | return count; | |
2346 | } | |
2347 | ||
2348 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2349 | ||
2350 | /* | |
2351 | * members | |
2352 | */ | |
2353 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2354 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2355 | char *page) | |
2356 | { | |
2357 | struct se_port *port; | |
2358 | struct se_portal_group *tpg; | |
2359 | struct se_lun *lun; | |
2360 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2361 | ssize_t len = 0, cur_len; | |
2362 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2363 | ||
2364 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2365 | ||
2366 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2367 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2368 | tg_pt_gp_mem_list) { | |
2369 | port = tg_pt_gp_mem->tg_pt; | |
2370 | tpg = port->sep_tpg; | |
2371 | lun = port->sep_lun; | |
2372 | ||
2373 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2374 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2375 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2376 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2377 | config_item_name(&lun->lun_group.cg_item)); |
2378 | cur_len++; /* Extra byte for NULL terminator */ | |
2379 | ||
2380 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2381 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2382 | "_members buffer\n"); |
2383 | break; | |
2384 | } | |
2385 | memcpy(page+len, buf, cur_len); | |
2386 | len += cur_len; | |
2387 | } | |
2388 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2389 | ||
2390 | return len; | |
2391 | } | |
2392 | ||
2393 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2394 | ||
2395 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2396 | tg_pt_gp_group); | |
2397 | ||
2398 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2399 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2400 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2401 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
6be526c4 | 2402 | &target_core_alua_tg_pt_gp_alua_supported_states.attr, |
c66ac9db NB |
2403 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, |
2404 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2405 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
125d0119 | 2406 | &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, |
c66ac9db NB |
2407 | &target_core_alua_tg_pt_gp_preferred.attr, |
2408 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2409 | &target_core_alua_tg_pt_gp_members.attr, | |
2410 | NULL, | |
2411 | }; | |
2412 | ||
1f6fe7cb NB |
2413 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2414 | { | |
2415 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2416 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2417 | ||
2418 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2419 | } | |
2420 | ||
c66ac9db | 2421 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2422 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2423 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2424 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2425 | }; | |
2426 | ||
2427 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2428 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2429 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2430 | .ct_owner = THIS_MODULE, | |
2431 | }; | |
2432 | ||
2433 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2434 | ||
2435 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2436 | ||
2437 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2438 | struct config_group *group, | |
2439 | const char *name) | |
2440 | { | |
2441 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2442 | alua_tg_pt_gps_group); | |
2443 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2444 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2445 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2446 | ||
0fd97ccf | 2447 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2448 | if (!tg_pt_gp) |
c66ac9db NB |
2449 | return NULL; |
2450 | ||
2451 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2452 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2453 | ||
2454 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2455 | &target_core_alua_tg_pt_gp_cit); | |
2456 | ||
6708bb27 | 2457 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2458 | " Group: alua/tg_pt_gps/%s\n", |
2459 | config_item_name(alua_tg_pt_gp_ci)); | |
2460 | ||
2461 | return alua_tg_pt_gp_cg; | |
2462 | } | |
2463 | ||
2464 | static void target_core_alua_drop_tg_pt_gp( | |
2465 | struct config_group *group, | |
2466 | struct config_item *item) | |
2467 | { | |
2468 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2469 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2470 | ||
6708bb27 | 2471 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2472 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2473 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2474 | /* |
2475 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2476 | * -> target_core_alua_tg_pt_gp_release(). | |
2477 | */ | |
c66ac9db | 2478 | config_item_put(item); |
c66ac9db NB |
2479 | } |
2480 | ||
2481 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2482 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2483 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2484 | }; | |
2485 | ||
2486 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { | |
2487 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, | |
2488 | .ct_owner = THIS_MODULE, | |
2489 | }; | |
2490 | ||
2491 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ | |
2492 | ||
2493 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2494 | ||
2495 | /* | |
2496 | * target_core_alua_cit is a ConfigFS group that lives under | |
2497 | * /sys/kernel/config/target/core/alua. There are default groups | |
2498 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2499 | * target_core_alua_cit in target_core_init_configfs() below. | |
2500 | */ | |
2501 | static struct config_item_type target_core_alua_cit = { | |
2502 | .ct_item_ops = NULL, | |
2503 | .ct_attrs = NULL, | |
2504 | .ct_owner = THIS_MODULE, | |
2505 | }; | |
2506 | ||
2507 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2508 | ||
12d23384 NB |
2509 | /* Start functions for struct config_item_type target_core_stat_cit */ |
2510 | ||
2511 | static struct config_group *target_core_stat_mkdir( | |
2512 | struct config_group *group, | |
2513 | const char *name) | |
2514 | { | |
2515 | return ERR_PTR(-ENOSYS); | |
2516 | } | |
2517 | ||
2518 | static void target_core_stat_rmdir( | |
2519 | struct config_group *group, | |
2520 | struct config_item *item) | |
2521 | { | |
2522 | return; | |
2523 | } | |
2524 | ||
2525 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2526 | .make_group = &target_core_stat_mkdir, | |
2527 | .drop_item = &target_core_stat_rmdir, | |
2528 | }; | |
2529 | ||
2530 | static struct config_item_type target_core_stat_cit = { | |
2531 | .ct_group_ops = &target_core_stat_group_ops, | |
2532 | .ct_owner = THIS_MODULE, | |
2533 | }; | |
2534 | ||
2535 | /* End functions for struct config_item_type target_core_stat_cit */ | |
2536 | ||
c66ac9db NB |
2537 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2538 | ||
2539 | static struct config_group *target_core_make_subdev( | |
2540 | struct config_group *group, | |
2541 | const char *name) | |
2542 | { | |
2543 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2544 | struct se_subsystem_api *t; |
2545 | struct config_item *hba_ci = &group->cg_item; | |
2546 | struct se_hba *hba = item_to_hba(hba_ci); | |
0fd97ccf | 2547 | struct se_device *dev; |
c66ac9db | 2548 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
2549 | struct config_group *dev_stat_grp = NULL; |
2550 | int errno = -ENOMEM, ret; | |
c66ac9db | 2551 | |
12d23384 NB |
2552 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2553 | if (ret) | |
2554 | return ERR_PTR(ret); | |
c66ac9db NB |
2555 | /* |
2556 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2557 | */ | |
2558 | t = hba->transport; | |
2559 | ||
0fd97ccf CH |
2560 | dev = target_alloc_device(hba, name); |
2561 | if (!dev) | |
2562 | goto out_unlock; | |
2563 | ||
2564 | dev_cg = &dev->dev_group; | |
c66ac9db | 2565 | |
13f6a914 | 2566 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
c66ac9db | 2567 | GFP_KERNEL); |
6708bb27 | 2568 | if (!dev_cg->default_groups) |
0fd97ccf | 2569 | goto out_free_device; |
c66ac9db | 2570 | |
0fd97ccf CH |
2571 | config_group_init_type_name(dev_cg, name, &target_core_dev_cit); |
2572 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", | |
c66ac9db | 2573 | &target_core_dev_attrib_cit); |
0fd97ccf | 2574 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
c66ac9db | 2575 | &target_core_dev_pr_cit); |
0fd97ccf | 2576 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
c66ac9db | 2577 | &target_core_dev_wwn_cit); |
0fd97ccf | 2578 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
c66ac9db | 2579 | "alua", &target_core_alua_tg_pt_gps_cit); |
0fd97ccf | 2580 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
12d23384 NB |
2581 | "statistics", &target_core_stat_cit); |
2582 | ||
0fd97ccf CH |
2583 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
2584 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
2585 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
2586 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
2587 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 2588 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 2589 | /* |
12d23384 | 2590 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2591 | */ |
0fd97ccf | 2592 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2593 | if (!tg_pt_gp) |
0fd97ccf CH |
2594 | goto out_free_dev_cg_default_groups; |
2595 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 2596 | |
0fd97ccf | 2597 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
13f6a914 | 2598 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2599 | GFP_KERNEL); |
6708bb27 AG |
2600 | if (!tg_pt_gp_cg->default_groups) { |
2601 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 2602 | "default_groups\n"); |
0fd97ccf | 2603 | goto out_free_tg_pt_gp; |
c66ac9db NB |
2604 | } |
2605 | ||
2606 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2607 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2608 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2609 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
2610 | /* |
2611 | * Add core/$HBA/$DEV/statistics/ default groups | |
2612 | */ | |
0fd97ccf | 2613 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
13f6a914 | 2614 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
12d23384 NB |
2615 | GFP_KERNEL); |
2616 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2617 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 2618 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 2619 | } |
0fd97ccf | 2620 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2621 | |
2622 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
2623 | return dev_cg; |
2624 | ||
2625 | out_free_tg_pt_gp_cg_default_groups: | |
2626 | kfree(tg_pt_gp_cg->default_groups); | |
2627 | out_free_tg_pt_gp: | |
2628 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2629 | out_free_dev_cg_default_groups: | |
2630 | kfree(dev_cg->default_groups); | |
2631 | out_free_device: | |
2632 | target_free_device(dev); | |
2633 | out_unlock: | |
c66ac9db | 2634 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2635 | return ERR_PTR(errno); |
c66ac9db NB |
2636 | } |
2637 | ||
2638 | static void target_core_drop_subdev( | |
2639 | struct config_group *group, | |
2640 | struct config_item *item) | |
2641 | { | |
0fd97ccf CH |
2642 | struct config_group *dev_cg = to_config_group(item); |
2643 | struct se_device *dev = | |
2644 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2645 | struct se_hba *hba; |
c66ac9db | 2646 | struct config_item *df_item; |
0fd97ccf | 2647 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2648 | int i; |
c66ac9db | 2649 | |
0fd97ccf | 2650 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 2651 | |
1f6fe7cb | 2652 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2653 | |
0fd97ccf | 2654 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2655 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2656 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2657 | dev_stat_grp->default_groups[i] = NULL; | |
2658 | config_item_put(df_item); | |
2659 | } | |
2660 | kfree(dev_stat_grp->default_groups); | |
2661 | ||
0fd97ccf | 2662 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2663 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2664 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2665 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2666 | config_item_put(df_item); | |
2667 | } | |
2668 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2669 | /* |
2670 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2671 | * directly from target_core_alua_tg_pt_gp_release(). | |
2672 | */ | |
0fd97ccf | 2673 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 2674 | |
c66ac9db NB |
2675 | for (i = 0; dev_cg->default_groups[i]; i++) { |
2676 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2677 | dev_cg->default_groups[i] = NULL; | |
2678 | config_item_put(df_item); | |
2679 | } | |
c66ac9db | 2680 | /* |
0fd97ccf | 2681 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 2682 | */ |
1f6fe7cb | 2683 | config_item_put(item); |
c66ac9db | 2684 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2685 | } |
2686 | ||
2687 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2688 | .make_group = target_core_make_subdev, | |
2689 | .drop_item = target_core_drop_subdev, | |
2690 | }; | |
2691 | ||
2692 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2693 | #define SE_HBA_ATTR(_name, _mode) \ | |
2694 | static struct target_core_hba_attribute \ | |
2695 | target_core_hba_##_name = \ | |
2696 | __CONFIGFS_EATTR(_name, _mode, \ | |
2697 | target_core_hba_show_attr_##_name, \ | |
2698 | target_core_hba_store_attr_##_name); | |
2699 | ||
2700 | #define SE_HBA_ATTR_RO(_name) \ | |
2701 | static struct target_core_hba_attribute \ | |
2702 | target_core_hba_##_name = \ | |
2703 | __CONFIGFS_EATTR_RO(_name, \ | |
2704 | target_core_hba_show_attr_##_name); | |
2705 | ||
2706 | static ssize_t target_core_hba_show_attr_hba_info( | |
2707 | struct se_hba *hba, | |
2708 | char *page) | |
2709 | { | |
2710 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2711 | hba->hba_id, hba->transport->name, | |
2712 | TARGET_CORE_CONFIGFS_VERSION); | |
2713 | } | |
2714 | ||
2715 | SE_HBA_ATTR_RO(hba_info); | |
2716 | ||
2717 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2718 | char *page) | |
2719 | { | |
2720 | int hba_mode = 0; | |
2721 | ||
2722 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2723 | hba_mode = 1; | |
2724 | ||
2725 | return sprintf(page, "%d\n", hba_mode); | |
2726 | } | |
2727 | ||
2728 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2729 | const char *page, size_t count) | |
2730 | { | |
2731 | struct se_subsystem_api *transport = hba->transport; | |
2732 | unsigned long mode_flag; | |
2733 | int ret; | |
2734 | ||
2735 | if (transport->pmode_enable_hba == NULL) | |
2736 | return -EINVAL; | |
2737 | ||
57103d7f | 2738 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 2739 | if (ret < 0) { |
6708bb27 | 2740 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 2741 | return ret; |
c66ac9db NB |
2742 | } |
2743 | ||
0fd97ccf | 2744 | if (hba->dev_count) { |
6708bb27 | 2745 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
2746 | return -EINVAL; |
2747 | } | |
c66ac9db NB |
2748 | |
2749 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2750 | if (ret < 0) | |
2751 | return -EINVAL; | |
2752 | if (ret > 0) | |
2753 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2754 | else if (ret == 0) | |
2755 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2756 | ||
2757 | return count; | |
2758 | } | |
2759 | ||
2760 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2761 | ||
2762 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2763 | ||
1f6fe7cb NB |
2764 | static void target_core_hba_release(struct config_item *item) |
2765 | { | |
2766 | struct se_hba *hba = container_of(to_config_group(item), | |
2767 | struct se_hba, hba_group); | |
2768 | core_delete_hba(hba); | |
2769 | } | |
2770 | ||
c66ac9db NB |
2771 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2772 | &target_core_hba_hba_info.attr, | |
2773 | &target_core_hba_hba_mode.attr, | |
2774 | NULL, | |
2775 | }; | |
2776 | ||
2777 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2778 | .release = target_core_hba_release, |
c66ac9db NB |
2779 | .show_attribute = target_core_hba_attr_show, |
2780 | .store_attribute = target_core_hba_attr_store, | |
2781 | }; | |
2782 | ||
2783 | static struct config_item_type target_core_hba_cit = { | |
2784 | .ct_item_ops = &target_core_hba_item_ops, | |
2785 | .ct_group_ops = &target_core_hba_group_ops, | |
2786 | .ct_attrs = target_core_hba_attrs, | |
2787 | .ct_owner = THIS_MODULE, | |
2788 | }; | |
2789 | ||
2790 | static struct config_group *target_core_call_addhbatotarget( | |
2791 | struct config_group *group, | |
2792 | const char *name) | |
2793 | { | |
2794 | char *se_plugin_str, *str, *str2; | |
2795 | struct se_hba *hba; | |
2796 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
2797 | unsigned long plugin_dep_id = 0; | |
2798 | int ret; | |
2799 | ||
2800 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 2801 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 2802 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
2803 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
2804 | TARGET_CORE_NAME_MAX_LEN); | |
2805 | return ERR_PTR(-ENAMETOOLONG); | |
2806 | } | |
2807 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
2808 | ||
2809 | str = strstr(buf, "_"); | |
6708bb27 AG |
2810 | if (!str) { |
2811 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
2812 | return ERR_PTR(-EINVAL); |
2813 | } | |
2814 | se_plugin_str = buf; | |
2815 | /* | |
2816 | * Special case for subsystem plugins that have "_" in their names. | |
2817 | * Namely rd_direct and rd_mcp.. | |
2818 | */ | |
2819 | str2 = strstr(str+1, "_"); | |
6708bb27 | 2820 | if (str2) { |
c66ac9db NB |
2821 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
2822 | str2++; /* Skip to start of plugin dependent ID */ | |
2823 | str = str2; | |
2824 | } else { | |
2825 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
2826 | str++; /* Skip to start of plugin dependent ID */ | |
2827 | } | |
2828 | ||
57103d7f | 2829 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 2830 | if (ret < 0) { |
57103d7f | 2831 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2832 | " plugin_dep_id\n", ret); |
57103d7f | 2833 | return ERR_PTR(ret); |
c66ac9db NB |
2834 | } |
2835 | /* | |
2836 | * Load up TCM subsystem plugins if they have not already been loaded. | |
2837 | */ | |
dbc5623e | 2838 | transport_subsystem_check_init(); |
c66ac9db NB |
2839 | |
2840 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
2841 | if (IS_ERR(hba)) | |
2842 | return ERR_CAST(hba); | |
2843 | ||
2844 | config_group_init_type_name(&hba->hba_group, name, | |
2845 | &target_core_hba_cit); | |
2846 | ||
2847 | return &hba->hba_group; | |
2848 | } | |
2849 | ||
2850 | static void target_core_call_delhbafromtarget( | |
2851 | struct config_group *group, | |
2852 | struct config_item *item) | |
2853 | { | |
1f6fe7cb NB |
2854 | /* |
2855 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
2856 | * -> target_core_hba_release() | |
2857 | */ | |
c66ac9db | 2858 | config_item_put(item); |
c66ac9db NB |
2859 | } |
2860 | ||
2861 | static struct configfs_group_operations target_core_group_ops = { | |
2862 | .make_group = target_core_call_addhbatotarget, | |
2863 | .drop_item = target_core_call_delhbafromtarget, | |
2864 | }; | |
2865 | ||
2866 | static struct config_item_type target_core_cit = { | |
2867 | .ct_item_ops = NULL, | |
2868 | .ct_group_ops = &target_core_group_ops, | |
2869 | .ct_attrs = NULL, | |
2870 | .ct_owner = THIS_MODULE, | |
2871 | }; | |
2872 | ||
2873 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
2874 | ||
54550fab | 2875 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
2876 | { |
2877 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
2878 | struct config_group *lu_gp_cg = NULL; | |
2879 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
2880 | struct t10_alua_lu_gp *lu_gp; |
2881 | int ret; | |
2882 | ||
6708bb27 | 2883 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
2884 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
2885 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
2886 | ||
2887 | subsys = target_core_subsystem[0]; | |
2888 | config_group_init(&subsys->su_group); | |
2889 | mutex_init(&subsys->su_mutex); | |
2890 | ||
e3d6f909 | 2891 | ret = init_se_kmem_caches(); |
c66ac9db | 2892 | if (ret < 0) |
e3d6f909 | 2893 | return ret; |
c66ac9db NB |
2894 | /* |
2895 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
2896 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
2897 | */ | |
2898 | target_cg = &subsys->su_group; | |
13f6a914 | 2899 | target_cg->default_groups = kmalloc(sizeof(struct config_group) * 2, |
c66ac9db | 2900 | GFP_KERNEL); |
6708bb27 AG |
2901 | if (!target_cg->default_groups) { |
2902 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 2903 | ret = -ENOMEM; |
c66ac9db NB |
2904 | goto out_global; |
2905 | } | |
2906 | ||
e3d6f909 | 2907 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 2908 | "core", &target_core_cit); |
e3d6f909 | 2909 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
2910 | target_cg->default_groups[1] = NULL; |
2911 | /* | |
2912 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
2913 | */ | |
e3d6f909 | 2914 | hba_cg = &target_core_hbagroup; |
13f6a914 | 2915 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2916 | GFP_KERNEL); |
6708bb27 AG |
2917 | if (!hba_cg->default_groups) { |
2918 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 2919 | ret = -ENOMEM; |
c66ac9db NB |
2920 | goto out_global; |
2921 | } | |
e3d6f909 | 2922 | config_group_init_type_name(&alua_group, |
c66ac9db | 2923 | "alua", &target_core_alua_cit); |
e3d6f909 | 2924 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
2925 | hba_cg->default_groups[1] = NULL; |
2926 | /* | |
2927 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
2928 | * groups under /sys/kernel/config/target/core/alua/ | |
2929 | */ | |
e3d6f909 | 2930 | alua_cg = &alua_group; |
13f6a914 | 2931 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2932 | GFP_KERNEL); |
6708bb27 AG |
2933 | if (!alua_cg->default_groups) { |
2934 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 2935 | ret = -ENOMEM; |
c66ac9db NB |
2936 | goto out_global; |
2937 | } | |
2938 | ||
e3d6f909 | 2939 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 2940 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 2941 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
2942 | alua_cg->default_groups[1] = NULL; |
2943 | /* | |
2944 | * Add core/alua/lu_gps/default_lu_gp | |
2945 | */ | |
2946 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
2947 | if (IS_ERR(lu_gp)) { |
2948 | ret = -ENOMEM; | |
c66ac9db | 2949 | goto out_global; |
37bb7899 | 2950 | } |
c66ac9db | 2951 | |
e3d6f909 | 2952 | lu_gp_cg = &alua_lu_gps_group; |
13f6a914 | 2953 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2954 | GFP_KERNEL); |
6708bb27 AG |
2955 | if (!lu_gp_cg->default_groups) { |
2956 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 2957 | ret = -ENOMEM; |
c66ac9db NB |
2958 | goto out_global; |
2959 | } | |
2960 | ||
2961 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
2962 | &target_core_alua_lu_gp_cit); | |
2963 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
2964 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 2965 | default_lu_gp = lu_gp; |
c66ac9db NB |
2966 | /* |
2967 | * Register the target_core_mod subsystem with configfs. | |
2968 | */ | |
2969 | ret = configfs_register_subsystem(subsys); | |
2970 | if (ret < 0) { | |
6708bb27 | 2971 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
2972 | ret, subsys->su_group.cg_item.ci_namebuf); |
2973 | goto out_global; | |
2974 | } | |
6708bb27 | 2975 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
2976 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
2977 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
2978 | /* | |
2979 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
2980 | */ | |
2981 | ret = rd_module_init(); | |
2982 | if (ret < 0) | |
2983 | goto out; | |
2984 | ||
0d0f9dfb RD |
2985 | ret = core_dev_setup_virtual_lun0(); |
2986 | if (ret < 0) | |
c66ac9db NB |
2987 | goto out; |
2988 | ||
f99715ac NB |
2989 | ret = target_xcopy_setup_pt(); |
2990 | if (ret < 0) | |
2991 | goto out; | |
2992 | ||
c66ac9db NB |
2993 | return 0; |
2994 | ||
2995 | out: | |
2996 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
2997 | core_dev_release_virtual_lun0(); |
2998 | rd_module_exit(); | |
2999 | out_global: | |
e3d6f909 AG |
3000 | if (default_lu_gp) { |
3001 | core_alua_free_lu_gp(default_lu_gp); | |
3002 | default_lu_gp = NULL; | |
c66ac9db NB |
3003 | } |
3004 | if (lu_gp_cg) | |
3005 | kfree(lu_gp_cg->default_groups); | |
3006 | if (alua_cg) | |
3007 | kfree(alua_cg->default_groups); | |
3008 | if (hba_cg) | |
3009 | kfree(hba_cg->default_groups); | |
3010 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3011 | release_se_kmem_caches(); |
3012 | return ret; | |
c66ac9db NB |
3013 | } |
3014 | ||
54550fab | 3015 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3016 | { |
3017 | struct configfs_subsystem *subsys; | |
3018 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3019 | struct config_item *item; | |
3020 | int i; | |
3021 | ||
c66ac9db NB |
3022 | subsys = target_core_subsystem[0]; |
3023 | ||
e3d6f909 | 3024 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3025 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3026 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3027 | lu_gp_cg->default_groups[i] = NULL; | |
3028 | config_item_put(item); | |
3029 | } | |
3030 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3031 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3032 | |
e3d6f909 | 3033 | alua_cg = &alua_group; |
c66ac9db NB |
3034 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3035 | item = &alua_cg->default_groups[i]->cg_item; | |
3036 | alua_cg->default_groups[i] = NULL; | |
3037 | config_item_put(item); | |
3038 | } | |
3039 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3040 | alua_cg->default_groups = NULL; |
c66ac9db | 3041 | |
e3d6f909 | 3042 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3043 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3044 | item = &hba_cg->default_groups[i]->cg_item; | |
3045 | hba_cg->default_groups[i] = NULL; | |
3046 | config_item_put(item); | |
3047 | } | |
3048 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3049 | hba_cg->default_groups = NULL; |
3050 | /* | |
3051 | * We expect subsys->su_group.default_groups to be released | |
3052 | * by configfs subsystem provider logic.. | |
3053 | */ | |
3054 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3055 | kfree(subsys->su_group.default_groups); |
3056 | ||
e3d6f909 AG |
3057 | core_alua_free_lu_gp(default_lu_gp); |
3058 | default_lu_gp = NULL; | |
7c2bf6e9 | 3059 | |
6708bb27 | 3060 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3061 | " Infrastructure\n"); |
3062 | ||
c66ac9db NB |
3063 | core_dev_release_virtual_lun0(); |
3064 | rd_module_exit(); | |
f99715ac | 3065 | target_xcopy_release_pt(); |
e3d6f909 | 3066 | release_se_kmem_caches(); |
c66ac9db NB |
3067 | } |
3068 | ||
3069 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3070 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3071 | MODULE_LICENSE("GPL"); | |
3072 | ||
3073 | module_init(target_core_init_configfs); | |
3074 | module_exit(target_core_exit_configfs); |