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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 | |
73112edc NB |
53 | #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ |
54 | static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ | |
55 | { \ | |
56 | struct target_backend_cits *tbc = &sa->tb_cits; \ | |
57 | struct config_item_type *cit = &tbc->tb_##_name##_cit; \ | |
58 | \ | |
59 | cit->ct_item_ops = _item_ops; \ | |
60 | cit->ct_group_ops = _group_ops; \ | |
61 | cit->ct_attrs = _attrs; \ | |
62 | cit->ct_owner = sa->owner; \ | |
63 | pr_debug("Setup generic %s\n", __stringify(_name)); \ | |
64 | } | |
65 | ||
e3d6f909 AG |
66 | extern struct t10_alua_lu_gp *default_lu_gp; |
67 | ||
d0f474e5 RD |
68 | static LIST_HEAD(g_tf_list); |
69 | static DEFINE_MUTEX(g_tf_lock); | |
c66ac9db NB |
70 | |
71 | struct target_core_configfs_attribute { | |
72 | struct configfs_attribute attr; | |
73 | ssize_t (*show)(void *, char *); | |
74 | ssize_t (*store)(void *, const char *, size_t); | |
75 | }; | |
76 | ||
e3d6f909 AG |
77 | static struct config_group target_core_hbagroup; |
78 | static struct config_group alua_group; | |
79 | static struct config_group alua_lu_gps_group; | |
80 | ||
c66ac9db NB |
81 | static inline struct se_hba * |
82 | item_to_hba(struct config_item *item) | |
83 | { | |
84 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
85 | } | |
86 | ||
87 | /* | |
88 | * Attributes for /sys/kernel/config/target/ | |
89 | */ | |
90 | static ssize_t target_core_attr_show(struct config_item *item, | |
91 | struct configfs_attribute *attr, | |
92 | char *page) | |
93 | { | |
94 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
95 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, | |
96 | utsname()->sysname, utsname()->machine); | |
97 | } | |
98 | ||
99 | static struct configfs_item_operations target_core_fabric_item_ops = { | |
100 | .show_attribute = target_core_attr_show, | |
101 | }; | |
102 | ||
103 | static struct configfs_attribute target_core_item_attr_version = { | |
104 | .ca_owner = THIS_MODULE, | |
105 | .ca_name = "version", | |
106 | .ca_mode = S_IRUGO, | |
107 | }; | |
108 | ||
109 | static struct target_fabric_configfs *target_core_get_fabric( | |
110 | const char *name) | |
111 | { | |
112 | struct target_fabric_configfs *tf; | |
113 | ||
6708bb27 | 114 | if (!name) |
c66ac9db NB |
115 | return NULL; |
116 | ||
117 | mutex_lock(&g_tf_lock); | |
118 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
6708bb27 | 119 | if (!strcmp(tf->tf_name, name)) { |
c66ac9db NB |
120 | atomic_inc(&tf->tf_access_cnt); |
121 | mutex_unlock(&g_tf_lock); | |
122 | return tf; | |
123 | } | |
124 | } | |
125 | mutex_unlock(&g_tf_lock); | |
126 | ||
127 | return NULL; | |
128 | } | |
129 | ||
130 | /* | |
131 | * Called from struct target_core_group_ops->make_group() | |
132 | */ | |
133 | static struct config_group *target_core_register_fabric( | |
134 | struct config_group *group, | |
135 | const char *name) | |
136 | { | |
137 | struct target_fabric_configfs *tf; | |
138 | int ret; | |
139 | ||
6708bb27 | 140 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 141 | " %s\n", group, name); |
e7b7af6e RD |
142 | |
143 | tf = target_core_get_fabric(name); | |
144 | if (!tf) { | |
145 | pr_err("target_core_register_fabric() trying autoload for %s\n", | |
146 | name); | |
147 | ||
c66ac9db | 148 | /* |
e7b7af6e RD |
149 | * Below are some hardcoded request_module() calls to automatically |
150 | * local fabric modules when the following is called: | |
c66ac9db | 151 | * |
e7b7af6e | 152 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 153 | * |
e7b7af6e RD |
154 | * Note that this does not limit which TCM fabric module can be |
155 | * registered, but simply provids auto loading logic for modules with | |
156 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 157 | */ |
e7b7af6e RD |
158 | |
159 | if (!strncmp(name, "iscsi", 5)) { | |
160 | /* | |
161 | * Automatically load the LIO Target fabric module when the | |
162 | * following is called: | |
163 | * | |
164 | * mkdir -p $CONFIGFS/target/iscsi | |
165 | */ | |
166 | ret = request_module("iscsi_target_mod"); | |
167 | if (ret < 0) { | |
168 | pr_err("request_module() failed for" | |
169 | " iscsi_target_mod.ko: %d\n", ret); | |
170 | return ERR_PTR(-EINVAL); | |
171 | } | |
172 | } else if (!strncmp(name, "loopback", 8)) { | |
173 | /* | |
174 | * Automatically load the tcm_loop fabric module when the | |
175 | * following is called: | |
176 | * | |
177 | * mkdir -p $CONFIGFS/target/loopback | |
178 | */ | |
179 | ret = request_module("tcm_loop"); | |
180 | if (ret < 0) { | |
181 | pr_err("request_module() failed for" | |
182 | " tcm_loop.ko: %d\n", ret); | |
183 | return ERR_PTR(-EINVAL); | |
184 | } | |
c66ac9db | 185 | } |
e7b7af6e RD |
186 | |
187 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
188 | } |
189 | ||
6708bb27 AG |
190 | if (!tf) { |
191 | pr_err("target_core_get_fabric() failed for %s\n", | |
e7b7af6e | 192 | name); |
c66ac9db NB |
193 | return ERR_PTR(-EINVAL); |
194 | } | |
6708bb27 | 195 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
c66ac9db NB |
196 | " %s\n", tf->tf_name); |
197 | /* | |
198 | * On a successful target_core_get_fabric() look, the returned | |
199 | * struct target_fabric_configfs *tf will contain a usage reference. | |
200 | */ | |
6708bb27 | 201 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
d80e224d | 202 | &tf->tf_cit_tmpl.tfc_wwn_cit); |
c66ac9db NB |
203 | |
204 | tf->tf_group.default_groups = tf->tf_default_groups; | |
205 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; | |
206 | tf->tf_group.default_groups[1] = NULL; | |
207 | ||
208 | config_group_init_type_name(&tf->tf_group, name, | |
d80e224d | 209 | &tf->tf_cit_tmpl.tfc_wwn_cit); |
c66ac9db | 210 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
d80e224d | 211 | &tf->tf_cit_tmpl.tfc_discovery_cit); |
c66ac9db | 212 | |
6708bb27 | 213 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
c66ac9db NB |
214 | " %s\n", tf->tf_group.cg_item.ci_name); |
215 | /* | |
216 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() | |
217 | */ | |
218 | tf->tf_ops.tf_subsys = tf->tf_subsys; | |
219 | tf->tf_fabric = &tf->tf_group.cg_item; | |
6708bb27 | 220 | pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" |
c66ac9db NB |
221 | " for %s\n", name); |
222 | ||
223 | return &tf->tf_group; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Called from struct target_core_group_ops->drop_item() | |
228 | */ | |
229 | static void target_core_deregister_fabric( | |
230 | struct config_group *group, | |
231 | struct config_item *item) | |
232 | { | |
233 | struct target_fabric_configfs *tf = container_of( | |
234 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
235 | struct config_group *tf_group; | |
236 | struct config_item *df_item; | |
237 | int i; | |
238 | ||
6708bb27 | 239 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
240 | " tf list\n", config_item_name(item)); |
241 | ||
6708bb27 | 242 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
c66ac9db NB |
243 | " %s\n", tf->tf_name); |
244 | atomic_dec(&tf->tf_access_cnt); | |
245 | ||
6708bb27 | 246 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" |
c66ac9db NB |
247 | " tf->tf_fabric for %s\n", tf->tf_name); |
248 | tf->tf_fabric = NULL; | |
249 | ||
6708bb27 | 250 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
251 | " %s\n", config_item_name(item)); |
252 | ||
253 | tf_group = &tf->tf_group; | |
254 | for (i = 0; tf_group->default_groups[i]; i++) { | |
255 | df_item = &tf_group->default_groups[i]->cg_item; | |
256 | tf_group->default_groups[i] = NULL; | |
257 | config_item_put(df_item); | |
258 | } | |
259 | config_item_put(item); | |
260 | } | |
261 | ||
262 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
263 | .make_group = &target_core_register_fabric, | |
264 | .drop_item = &target_core_deregister_fabric, | |
265 | }; | |
266 | ||
267 | /* | |
268 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
269 | */ | |
270 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
271 | &target_core_item_attr_version, | |
272 | NULL, | |
273 | }; | |
274 | ||
275 | /* | |
276 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
277 | */ | |
278 | static struct config_item_type target_core_fabrics_item = { | |
279 | .ct_item_ops = &target_core_fabric_item_ops, | |
280 | .ct_group_ops = &target_core_fabric_group_ops, | |
281 | .ct_attrs = target_core_fabric_item_attrs, | |
282 | .ct_owner = THIS_MODULE, | |
283 | }; | |
284 | ||
285 | static struct configfs_subsystem target_core_fabrics = { | |
286 | .su_group = { | |
287 | .cg_item = { | |
288 | .ci_namebuf = "target", | |
289 | .ci_type = &target_core_fabrics_item, | |
290 | }, | |
291 | }, | |
292 | }; | |
293 | ||
56d128fa | 294 | struct configfs_subsystem *target_core_subsystem[] = { |
c66ac9db NB |
295 | &target_core_fabrics, |
296 | NULL, | |
297 | }; | |
298 | ||
299 | /*############################################################################## | |
300 | // Start functions called by external Target Fabrics Modules | |
301 | //############################################################################*/ | |
302 | ||
303 | /* | |
304 | * First function called by fabric modules to: | |
305 | * | |
306 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. | |
307 | * 2) Add struct target_fabric_configfs to g_tf_list | |
308 | * 3) Return struct target_fabric_configfs to fabric module to be passed | |
309 | * into target_fabric_configfs_register(). | |
310 | */ | |
311 | struct target_fabric_configfs *target_fabric_configfs_init( | |
312 | struct module *fabric_mod, | |
313 | const char *name) | |
314 | { | |
315 | struct target_fabric_configfs *tf; | |
316 | ||
c66ac9db | 317 | if (!(name)) { |
6708bb27 | 318 | pr_err("Unable to locate passed fabric name\n"); |
e3d6f909 | 319 | return ERR_PTR(-EINVAL); |
c66ac9db | 320 | } |
60d645a4 | 321 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
6708bb27 | 322 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
c66ac9db | 323 | "_NAME_SIZE\n", name); |
e3d6f909 | 324 | return ERR_PTR(-EINVAL); |
c66ac9db NB |
325 | } |
326 | ||
327 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 328 | if (!tf) |
e3d6f909 | 329 | return ERR_PTR(-ENOMEM); |
c66ac9db NB |
330 | |
331 | INIT_LIST_HEAD(&tf->tf_list); | |
332 | atomic_set(&tf->tf_access_cnt, 0); | |
333 | /* | |
334 | * Setup the default generic struct config_item_type's (cits) in | |
335 | * struct target_fabric_configfs->tf_cit_tmpl | |
336 | */ | |
337 | tf->tf_module = fabric_mod; | |
338 | target_fabric_setup_cits(tf); | |
339 | ||
340 | tf->tf_subsys = target_core_subsystem[0]; | |
341 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); | |
342 | ||
343 | mutex_lock(&g_tf_lock); | |
344 | list_add_tail(&tf->tf_list, &g_tf_list); | |
345 | mutex_unlock(&g_tf_lock); | |
346 | ||
6708bb27 | 347 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" |
c66ac9db | 348 | ">>>>>>>>>>>>>>\n"); |
6708bb27 | 349 | pr_debug("Initialized struct target_fabric_configfs: %p for" |
c66ac9db NB |
350 | " %s\n", tf, tf->tf_name); |
351 | return tf; | |
352 | } | |
353 | EXPORT_SYMBOL(target_fabric_configfs_init); | |
354 | ||
355 | /* | |
356 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. | |
357 | */ | |
358 | void target_fabric_configfs_free( | |
359 | struct target_fabric_configfs *tf) | |
360 | { | |
361 | mutex_lock(&g_tf_lock); | |
362 | list_del(&tf->tf_list); | |
363 | mutex_unlock(&g_tf_lock); | |
364 | ||
365 | kfree(tf); | |
366 | } | |
367 | EXPORT_SYMBOL(target_fabric_configfs_free); | |
368 | ||
369 | /* | |
370 | * Perform a sanity check of the passed tf->tf_ops before completing | |
371 | * TCM fabric module registration. | |
372 | */ | |
373 | static int target_fabric_tf_ops_check( | |
374 | struct target_fabric_configfs *tf) | |
375 | { | |
376 | struct target_core_fabric_ops *tfo = &tf->tf_ops; | |
377 | ||
6708bb27 AG |
378 | if (!tfo->get_fabric_name) { |
379 | pr_err("Missing tfo->get_fabric_name()\n"); | |
c66ac9db NB |
380 | return -EINVAL; |
381 | } | |
6708bb27 AG |
382 | if (!tfo->get_fabric_proto_ident) { |
383 | pr_err("Missing tfo->get_fabric_proto_ident()\n"); | |
c66ac9db NB |
384 | return -EINVAL; |
385 | } | |
6708bb27 AG |
386 | if (!tfo->tpg_get_wwn) { |
387 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
388 | return -EINVAL; |
389 | } | |
6708bb27 AG |
390 | if (!tfo->tpg_get_tag) { |
391 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
392 | return -EINVAL; |
393 | } | |
6708bb27 AG |
394 | if (!tfo->tpg_get_default_depth) { |
395 | pr_err("Missing tfo->tpg_get_default_depth()\n"); | |
c66ac9db NB |
396 | return -EINVAL; |
397 | } | |
6708bb27 AG |
398 | if (!tfo->tpg_get_pr_transport_id) { |
399 | pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); | |
c66ac9db NB |
400 | return -EINVAL; |
401 | } | |
6708bb27 AG |
402 | if (!tfo->tpg_get_pr_transport_id_len) { |
403 | pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); | |
c66ac9db NB |
404 | return -EINVAL; |
405 | } | |
6708bb27 AG |
406 | if (!tfo->tpg_check_demo_mode) { |
407 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
408 | return -EINVAL; |
409 | } | |
6708bb27 AG |
410 | if (!tfo->tpg_check_demo_mode_cache) { |
411 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
412 | return -EINVAL; |
413 | } | |
6708bb27 AG |
414 | if (!tfo->tpg_check_demo_mode_write_protect) { |
415 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
416 | return -EINVAL; |
417 | } | |
6708bb27 AG |
418 | if (!tfo->tpg_check_prod_mode_write_protect) { |
419 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
420 | return -EINVAL; |
421 | } | |
6708bb27 AG |
422 | if (!tfo->tpg_alloc_fabric_acl) { |
423 | pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); | |
c66ac9db NB |
424 | return -EINVAL; |
425 | } | |
6708bb27 AG |
426 | if (!tfo->tpg_release_fabric_acl) { |
427 | pr_err("Missing tfo->tpg_release_fabric_acl()\n"); | |
c66ac9db NB |
428 | return -EINVAL; |
429 | } | |
6708bb27 AG |
430 | if (!tfo->tpg_get_inst_index) { |
431 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
432 | return -EINVAL; |
433 | } | |
35462975 | 434 | if (!tfo->release_cmd) { |
6708bb27 | 435 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
436 | return -EINVAL; |
437 | } | |
6708bb27 AG |
438 | if (!tfo->shutdown_session) { |
439 | pr_err("Missing tfo->shutdown_session()\n"); | |
c66ac9db NB |
440 | return -EINVAL; |
441 | } | |
6708bb27 AG |
442 | if (!tfo->close_session) { |
443 | pr_err("Missing tfo->close_session()\n"); | |
c66ac9db NB |
444 | return -EINVAL; |
445 | } | |
6708bb27 AG |
446 | if (!tfo->sess_get_index) { |
447 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
448 | return -EINVAL; |
449 | } | |
6708bb27 AG |
450 | if (!tfo->write_pending) { |
451 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
452 | return -EINVAL; |
453 | } | |
6708bb27 AG |
454 | if (!tfo->write_pending_status) { |
455 | pr_err("Missing tfo->write_pending_status()\n"); | |
c66ac9db NB |
456 | return -EINVAL; |
457 | } | |
6708bb27 AG |
458 | if (!tfo->set_default_node_attributes) { |
459 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
460 | return -EINVAL; |
461 | } | |
6708bb27 AG |
462 | if (!tfo->get_task_tag) { |
463 | pr_err("Missing tfo->get_task_tag()\n"); | |
c66ac9db NB |
464 | return -EINVAL; |
465 | } | |
6708bb27 AG |
466 | if (!tfo->get_cmd_state) { |
467 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
468 | return -EINVAL; |
469 | } | |
6708bb27 AG |
470 | if (!tfo->queue_data_in) { |
471 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
472 | return -EINVAL; |
473 | } | |
6708bb27 AG |
474 | if (!tfo->queue_status) { |
475 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
476 | return -EINVAL; |
477 | } | |
6708bb27 AG |
478 | if (!tfo->queue_tm_rsp) { |
479 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
480 | return -EINVAL; |
481 | } | |
131e6abc NB |
482 | if (!tfo->aborted_task) { |
483 | pr_err("Missing tfo->aborted_task()\n"); | |
484 | return -EINVAL; | |
485 | } | |
c66ac9db NB |
486 | /* |
487 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
488 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
489 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
490 | */ | |
6708bb27 AG |
491 | if (!tfo->fabric_make_wwn) { |
492 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
493 | return -EINVAL; |
494 | } | |
6708bb27 AG |
495 | if (!tfo->fabric_drop_wwn) { |
496 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
497 | return -EINVAL; |
498 | } | |
6708bb27 AG |
499 | if (!tfo->fabric_make_tpg) { |
500 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
501 | return -EINVAL; |
502 | } | |
6708bb27 AG |
503 | if (!tfo->fabric_drop_tpg) { |
504 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
505 | return -EINVAL; |
506 | } | |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
511 | /* | |
512 | * Called 2nd from fabric module with returned parameter of | |
513 | * struct target_fabric_configfs * from target_fabric_configfs_init(). | |
514 | * | |
515 | * Upon a successful registration, the new fabric's struct config_item is | |
516 | * return. Also, a pointer to this struct is set in the passed | |
517 | * struct target_fabric_configfs. | |
518 | */ | |
519 | int target_fabric_configfs_register( | |
520 | struct target_fabric_configfs *tf) | |
521 | { | |
c66ac9db NB |
522 | int ret; |
523 | ||
6708bb27 AG |
524 | if (!tf) { |
525 | pr_err("Unable to locate target_fabric_configfs" | |
c66ac9db NB |
526 | " pointer\n"); |
527 | return -EINVAL; | |
528 | } | |
6708bb27 AG |
529 | if (!tf->tf_subsys) { |
530 | pr_err("Unable to target struct config_subsystem" | |
c66ac9db NB |
531 | " pointer\n"); |
532 | return -EINVAL; | |
533 | } | |
c66ac9db NB |
534 | ret = target_fabric_tf_ops_check(tf); |
535 | if (ret < 0) | |
536 | return ret; | |
537 | ||
6708bb27 | 538 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
c66ac9db NB |
539 | ">>>>>>>>>>\n"); |
540 | return 0; | |
541 | } | |
542 | EXPORT_SYMBOL(target_fabric_configfs_register); | |
543 | ||
544 | void target_fabric_configfs_deregister( | |
545 | struct target_fabric_configfs *tf) | |
546 | { | |
c66ac9db NB |
547 | struct configfs_subsystem *su; |
548 | ||
6708bb27 AG |
549 | if (!tf) { |
550 | pr_err("Unable to locate passed target_fabric_" | |
c66ac9db NB |
551 | "configfs\n"); |
552 | return; | |
553 | } | |
554 | su = tf->tf_subsys; | |
6708bb27 AG |
555 | if (!su) { |
556 | pr_err("Unable to locate passed tf->tf_subsys" | |
c66ac9db NB |
557 | " pointer\n"); |
558 | return; | |
559 | } | |
6708bb27 | 560 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
c66ac9db NB |
561 | ">>>>>>>>>>>>\n"); |
562 | mutex_lock(&g_tf_lock); | |
563 | if (atomic_read(&tf->tf_access_cnt)) { | |
564 | mutex_unlock(&g_tf_lock); | |
6708bb27 | 565 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
c66ac9db NB |
566 | tf->tf_name); |
567 | BUG(); | |
568 | } | |
569 | list_del(&tf->tf_list); | |
570 | mutex_unlock(&g_tf_lock); | |
571 | ||
6708bb27 | 572 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
c66ac9db NB |
573 | " %s\n", tf->tf_name); |
574 | tf->tf_module = NULL; | |
575 | tf->tf_subsys = NULL; | |
576 | kfree(tf); | |
577 | ||
6708bb27 | 578 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
c66ac9db | 579 | ">>>>>\n"); |
c66ac9db NB |
580 | } |
581 | EXPORT_SYMBOL(target_fabric_configfs_deregister); | |
582 | ||
583 | /*############################################################################## | |
584 | // Stop functions called by external Target Fabrics Modules | |
585 | //############################################################################*/ | |
586 | ||
f79a897e | 587 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 588 | |
c66ac9db | 589 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); |
c66ac9db NB |
590 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); |
591 | ||
c66ac9db NB |
592 | static struct configfs_item_operations target_core_dev_attrib_ops = { |
593 | .show_attribute = target_core_dev_attrib_attr_show, | |
594 | .store_attribute = target_core_dev_attrib_attr_store, | |
595 | }; | |
596 | ||
43cf208c | 597 | TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, NULL); |
c66ac9db | 598 | |
f79a897e | 599 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 600 | |
f8d389c6 | 601 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db NB |
602 | |
603 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); | |
604 | #define SE_DEV_WWN_ATTR(_name, _mode) \ | |
605 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ | |
606 | __CONFIGFS_EATTR(_name, _mode, \ | |
607 | target_core_dev_wwn_show_attr_##_name, \ | |
608 | target_core_dev_wwn_store_attr_##_name); | |
609 | ||
610 | #define SE_DEV_WWN_ATTR_RO(_name); \ | |
611 | do { \ | |
612 | static struct target_core_dev_wwn_attribute \ | |
613 | target_core_dev_wwn_##_name = \ | |
614 | __CONFIGFS_EATTR_RO(_name, \ | |
615 | target_core_dev_wwn_show_attr_##_name); \ | |
616 | } while (0); | |
617 | ||
618 | /* | |
619 | * VPD page 0x80 Unit serial | |
620 | */ | |
621 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( | |
622 | struct t10_wwn *t10_wwn, | |
623 | char *page) | |
624 | { | |
c66ac9db NB |
625 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
626 | &t10_wwn->unit_serial[0]); | |
627 | } | |
628 | ||
629 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( | |
630 | struct t10_wwn *t10_wwn, | |
631 | const char *page, | |
632 | size_t count) | |
633 | { | |
0fd97ccf | 634 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
635 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
636 | ||
637 | /* | |
638 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
639 | * from the struct scsi_device level firmware, do not allow | |
640 | * VPD Unit Serial to be emulated. | |
641 | * | |
642 | * Note this struct scsi_device could also be emulating VPD | |
643 | * information from its drivers/scsi LLD. But for now we assume | |
644 | * it is doing 'the right thing' wrt a world wide unique | |
645 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
646 | */ | |
0fd97ccf | 647 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 648 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
649 | " Unit Serial, ignoring request\n"); |
650 | return -EOPNOTSUPP; | |
651 | } | |
652 | ||
60d645a4 | 653 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 654 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
655 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
656 | return -EOVERFLOW; | |
657 | } | |
658 | /* | |
659 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
660 | * do exist, fail here as changing this information on the fly | |
661 | * (underneath the initiator side OS dependent multipath code) | |
662 | * could cause negative effects. | |
663 | */ | |
0fd97ccf CH |
664 | if (dev->export_count) { |
665 | pr_err("Unable to set VPD Unit Serial while" | |
666 | " active %d $FABRIC_MOD exports exist\n", | |
667 | dev->export_count); | |
668 | return -EINVAL; | |
c66ac9db | 669 | } |
0fd97ccf | 670 | |
c66ac9db NB |
671 | /* |
672 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
673 | * | |
674 | * Also, strip any newline added from the userspace | |
675 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
676 | */ | |
677 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
678 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 679 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 680 | "%s", strstrip(buf)); |
0fd97ccf | 681 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 682 | |
6708bb27 | 683 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 684 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
685 | |
686 | return count; | |
687 | } | |
688 | ||
689 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); | |
690 | ||
691 | /* | |
692 | * VPD page 0x83 Protocol Identifier | |
693 | */ | |
694 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( | |
695 | struct t10_wwn *t10_wwn, | |
696 | char *page) | |
697 | { | |
c66ac9db NB |
698 | struct t10_vpd *vpd; |
699 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
700 | ssize_t len = 0; | |
701 | ||
c66ac9db NB |
702 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
703 | ||
704 | spin_lock(&t10_wwn->t10_vpd_lock); | |
705 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 706 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
707 | continue; |
708 | ||
709 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
710 | ||
6708bb27 | 711 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
712 | break; |
713 | ||
714 | len += sprintf(page+len, "%s", buf); | |
715 | } | |
716 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
717 | ||
718 | return len; | |
719 | } | |
720 | ||
721 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( | |
722 | struct t10_wwn *t10_wwn, | |
723 | const char *page, | |
724 | size_t count) | |
725 | { | |
726 | return -ENOSYS; | |
727 | } | |
728 | ||
729 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); | |
730 | ||
731 | /* | |
732 | * Generic wrapper for dumping VPD identifiers by association. | |
733 | */ | |
734 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
735 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ | |
736 | struct t10_wwn *t10_wwn, \ | |
737 | char *page) \ | |
738 | { \ | |
c66ac9db NB |
739 | struct t10_vpd *vpd; \ |
740 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ | |
741 | ssize_t len = 0; \ | |
742 | \ | |
c66ac9db NB |
743 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
744 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
745 | if (vpd->association != _assoc) \ | |
746 | continue; \ | |
747 | \ | |
748 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
749 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 750 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
751 | break; \ |
752 | len += sprintf(page+len, "%s", buf); \ | |
753 | \ | |
754 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
755 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 756 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
757 | break; \ |
758 | len += sprintf(page+len, "%s", buf); \ | |
759 | \ | |
760 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
761 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 762 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
763 | break; \ |
764 | len += sprintf(page+len, "%s", buf); \ | |
765 | } \ | |
766 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
767 | \ | |
768 | return len; \ | |
769 | } | |
770 | ||
771 | /* | |
163cd5fa | 772 | * VPD page 0x83 Association: Logical Unit |
c66ac9db NB |
773 | */ |
774 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); | |
775 | ||
776 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( | |
777 | struct t10_wwn *t10_wwn, | |
778 | const char *page, | |
779 | size_t count) | |
780 | { | |
781 | return -ENOSYS; | |
782 | } | |
783 | ||
784 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); | |
785 | ||
786 | /* | |
787 | * VPD page 0x83 Association: Target Port | |
788 | */ | |
789 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); | |
790 | ||
791 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( | |
792 | struct t10_wwn *t10_wwn, | |
793 | const char *page, | |
794 | size_t count) | |
795 | { | |
796 | return -ENOSYS; | |
797 | } | |
798 | ||
799 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); | |
800 | ||
801 | /* | |
802 | * VPD page 0x83 Association: SCSI Target Device | |
803 | */ | |
804 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); | |
805 | ||
806 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( | |
807 | struct t10_wwn *t10_wwn, | |
808 | const char *page, | |
809 | size_t count) | |
810 | { | |
811 | return -ENOSYS; | |
812 | } | |
813 | ||
814 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); | |
815 | ||
816 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); | |
817 | ||
818 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
819 | &target_core_dev_wwn_vpd_unit_serial.attr, | |
820 | &target_core_dev_wwn_vpd_protocol_identifier.attr, | |
821 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, | |
822 | &target_core_dev_wwn_vpd_assoc_target_port.attr, | |
823 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, | |
824 | NULL, | |
825 | }; | |
826 | ||
827 | static struct configfs_item_operations target_core_dev_wwn_ops = { | |
828 | .show_attribute = target_core_dev_wwn_attr_show, | |
829 | .store_attribute = target_core_dev_wwn_attr_store, | |
830 | }; | |
831 | ||
f8d389c6 | 832 | TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 833 | |
f8d389c6 | 834 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 835 | |
91e2e39b | 836 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 837 | |
0fd97ccf | 838 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
c66ac9db NB |
839 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
840 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
841 | __CONFIGFS_EATTR(_name, _mode, \ | |
842 | target_core_dev_pr_show_attr_##_name, \ | |
843 | target_core_dev_pr_store_attr_##_name); | |
844 | ||
845 | #define SE_DEV_PR_ATTR_RO(_name); \ | |
846 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ | |
847 | __CONFIGFS_EATTR_RO(_name, \ | |
848 | target_core_dev_pr_show_attr_##_name); | |
849 | ||
d977f437 CH |
850 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
851 | char *page) | |
c66ac9db NB |
852 | { |
853 | struct se_node_acl *se_nacl; | |
854 | struct t10_pr_registration *pr_reg; | |
855 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
856 | |
857 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
858 | ||
c66ac9db | 859 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
860 | if (!pr_reg) |
861 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
862 | ||
c66ac9db | 863 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 864 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 865 | |
d977f437 | 866 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
e3d6f909 | 867 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
d2843c17 | 868 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
869 | } |
870 | ||
d977f437 CH |
871 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
872 | char *page) | |
c66ac9db NB |
873 | { |
874 | struct se_node_acl *se_nacl; | |
d977f437 | 875 | ssize_t len; |
c66ac9db | 876 | |
c66ac9db | 877 | se_nacl = dev->dev_reserved_node_acl; |
d977f437 CH |
878 | if (se_nacl) { |
879 | len = sprintf(page, | |
880 | "SPC-2 Reservation: %s Initiator: %s\n", | |
881 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), | |
882 | se_nacl->initiatorname); | |
883 | } else { | |
884 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 885 | } |
d977f437 | 886 | return len; |
c66ac9db NB |
887 | } |
888 | ||
0fd97ccf CH |
889 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
890 | char *page) | |
c66ac9db | 891 | { |
d977f437 | 892 | int ret; |
c66ac9db | 893 | |
d977f437 CH |
894 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
895 | return sprintf(page, "Passthrough\n"); | |
c66ac9db | 896 | |
d977f437 CH |
897 | spin_lock(&dev->dev_reservation_lock); |
898 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
899 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
900 | else | |
901 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
902 | spin_unlock(&dev->dev_reservation_lock); | |
903 | return ret; | |
c66ac9db NB |
904 | } |
905 | ||
906 | SE_DEV_PR_ATTR_RO(res_holder); | |
907 | ||
c66ac9db | 908 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
0fd97ccf | 909 | struct se_device *dev, char *page) |
c66ac9db | 910 | { |
c66ac9db NB |
911 | ssize_t len = 0; |
912 | ||
c66ac9db | 913 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 914 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 915 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 916 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
917 | len = sprintf(page, "SPC-3 Reservation: All Target" |
918 | " Ports registration\n"); | |
d977f437 | 919 | } else { |
c66ac9db NB |
920 | len = sprintf(page, "SPC-3 Reservation: Single" |
921 | " Target Port registration\n"); | |
d977f437 | 922 | } |
c66ac9db | 923 | |
d977f437 | 924 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
925 | return len; |
926 | } | |
927 | ||
928 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); | |
929 | ||
c66ac9db | 930 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
0fd97ccf | 931 | struct se_device *dev, char *page) |
c66ac9db | 932 | { |
0fd97ccf | 933 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
c66ac9db NB |
934 | } |
935 | ||
936 | SE_DEV_PR_ATTR_RO(res_pr_generation); | |
937 | ||
938 | /* | |
939 | * res_pr_holder_tg_port | |
940 | */ | |
941 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( | |
0fd97ccf | 942 | struct se_device *dev, char *page) |
c66ac9db | 943 | { |
c66ac9db NB |
944 | struct se_node_acl *se_nacl; |
945 | struct se_lun *lun; | |
946 | struct se_portal_group *se_tpg; | |
947 | struct t10_pr_registration *pr_reg; | |
948 | struct target_core_fabric_ops *tfo; | |
949 | ssize_t len = 0; | |
950 | ||
c66ac9db NB |
951 | spin_lock(&dev->dev_reservation_lock); |
952 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 953 | if (!pr_reg) { |
c66ac9db | 954 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 955 | goto out_unlock; |
c66ac9db | 956 | } |
d977f437 | 957 | |
c66ac9db NB |
958 | se_nacl = pr_reg->pr_reg_nacl; |
959 | se_tpg = se_nacl->se_tpg; | |
960 | lun = pr_reg->pr_reg_tg_pt_lun; | |
e3d6f909 | 961 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
962 | |
963 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
964 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), | |
965 | tfo->tpg_get_wwn(se_tpg)); | |
966 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 967 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
c66ac9db NB |
968 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, |
969 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), | |
970 | tfo->get_fabric_name(), lun->unpacked_lun); | |
c66ac9db | 971 | |
d977f437 CH |
972 | out_unlock: |
973 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
974 | return len; |
975 | } | |
976 | ||
977 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); | |
978 | ||
c66ac9db | 979 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
0fd97ccf | 980 | struct se_device *dev, char *page) |
c66ac9db NB |
981 | { |
982 | struct target_core_fabric_ops *tfo; | |
983 | struct t10_pr_registration *pr_reg; | |
984 | unsigned char buf[384]; | |
985 | char i_buf[PR_REG_ISID_ID_LEN]; | |
986 | ssize_t len = 0; | |
d2843c17 | 987 | int reg_count = 0; |
c66ac9db | 988 | |
c66ac9db NB |
989 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
990 | ||
0fd97ccf CH |
991 | spin_lock(&dev->t10_pr.registration_lock); |
992 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
993 | pr_reg_list) { |
994 | ||
995 | memset(buf, 0, 384); | |
996 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
997 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 998 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
999 | PR_REG_ISID_ID_LEN); |
1000 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
1001 | tfo->get_fabric_name(), | |
d2843c17 | 1002 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1003 | pr_reg->pr_res_generation); |
1004 | ||
6708bb27 | 1005 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1006 | break; |
1007 | ||
1008 | len += sprintf(page+len, "%s", buf); | |
1009 | reg_count++; | |
1010 | } | |
0fd97ccf | 1011 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1012 | |
6708bb27 | 1013 | if (!reg_count) |
c66ac9db NB |
1014 | len += sprintf(page+len, "None\n"); |
1015 | ||
1016 | return len; | |
1017 | } | |
1018 | ||
1019 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); | |
1020 | ||
c66ac9db | 1021 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
0fd97ccf | 1022 | struct se_device *dev, char *page) |
c66ac9db | 1023 | { |
c66ac9db NB |
1024 | struct t10_pr_registration *pr_reg; |
1025 | ssize_t len = 0; | |
1026 | ||
c66ac9db NB |
1027 | spin_lock(&dev->dev_reservation_lock); |
1028 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1029 | if (pr_reg) { |
1030 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1031 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1032 | } else { | |
c66ac9db | 1033 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1034 | } |
c66ac9db | 1035 | |
d977f437 | 1036 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1037 | return len; |
1038 | } | |
1039 | ||
1040 | SE_DEV_PR_ATTR_RO(res_pr_type); | |
1041 | ||
c66ac9db | 1042 | static ssize_t target_core_dev_pr_show_attr_res_type( |
0fd97ccf | 1043 | struct se_device *dev, char *page) |
c66ac9db | 1044 | { |
d977f437 CH |
1045 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1046 | return sprintf(page, "SPC_PASSTHROUGH\n"); | |
1047 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1048 | return sprintf(page, "SPC2_RESERVATIONS\n"); | |
1049 | else | |
1050 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1051 | } |
1052 | ||
1053 | SE_DEV_PR_ATTR_RO(res_type); | |
1054 | ||
c66ac9db | 1055 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
0fd97ccf | 1056 | struct se_device *dev, char *page) |
c66ac9db | 1057 | { |
d977f437 | 1058 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1059 | return 0; |
1060 | ||
1061 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1062 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1063 | } |
1064 | ||
1065 | SE_DEV_PR_ATTR_RO(res_aptpl_active); | |
1066 | ||
1067 | /* | |
1068 | * res_aptpl_metadata | |
1069 | */ | |
1070 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( | |
0fd97ccf | 1071 | struct se_device *dev, char *page) |
c66ac9db | 1072 | { |
d977f437 | 1073 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
c66ac9db NB |
1074 | return 0; |
1075 | ||
1076 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1077 | } | |
1078 | ||
1079 | enum { | |
1080 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1081 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1082 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1083 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1084 | }; | |
1085 | ||
1086 | static match_table_t tokens = { | |
1087 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1088 | {Opt_initiator_node, "initiator_node=%s"}, | |
1089 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1090 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1091 | {Opt_res_holder, "res_holder=%d"}, | |
1092 | {Opt_res_type, "res_type=%d"}, | |
1093 | {Opt_res_scope, "res_scope=%d"}, | |
1094 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
1095 | {Opt_mapped_lun, "mapped_lun=%d"}, | |
1096 | {Opt_target_fabric, "target_fabric=%s"}, | |
1097 | {Opt_target_node, "target_node=%s"}, | |
1098 | {Opt_tpgt, "tpgt=%d"}, | |
1099 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
1100 | {Opt_target_lun, "target_lun=%d"}, | |
1101 | {Opt_err, NULL} | |
1102 | }; | |
1103 | ||
1104 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( | |
0fd97ccf | 1105 | struct se_device *dev, |
c66ac9db NB |
1106 | const char *page, |
1107 | size_t count) | |
1108 | { | |
6d180253 JJ |
1109 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1110 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 1111 | char *orig, *ptr, *opts; |
c66ac9db NB |
1112 | substring_t args[MAX_OPT_ARGS]; |
1113 | unsigned long long tmp_ll; | |
1114 | u64 sa_res_key = 0; | |
1115 | u32 mapped_lun = 0, target_lun = 0; | |
1116 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; | |
1117 | u16 port_rpti = 0, tpgt = 0; | |
1118 | u8 type = 0, scope; | |
1119 | ||
d977f437 CH |
1120 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
1121 | return 0; | |
1122 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
c66ac9db NB |
1123 | return 0; |
1124 | ||
0fd97ccf | 1125 | if (dev->export_count) { |
6708bb27 | 1126 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1127 | " active fabric exports exist\n"); |
1128 | return -EINVAL; | |
1129 | } | |
1130 | ||
1131 | opts = kstrdup(page, GFP_KERNEL); | |
1132 | if (!opts) | |
1133 | return -ENOMEM; | |
1134 | ||
1135 | orig = opts; | |
90c161b6 | 1136 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1137 | if (!*ptr) |
1138 | continue; | |
1139 | ||
1140 | token = match_token(ptr, tokens, args); | |
1141 | switch (token) { | |
1142 | case Opt_initiator_fabric: | |
8d213559 | 1143 | i_fabric = match_strdup(args); |
6d180253 JJ |
1144 | if (!i_fabric) { |
1145 | ret = -ENOMEM; | |
1146 | goto out; | |
1147 | } | |
c66ac9db NB |
1148 | break; |
1149 | case Opt_initiator_node: | |
8d213559 | 1150 | i_port = match_strdup(args); |
6d180253 JJ |
1151 | if (!i_port) { |
1152 | ret = -ENOMEM; | |
1153 | goto out; | |
1154 | } | |
60d645a4 | 1155 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1156 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1157 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1158 | PR_APTPL_MAX_IPORT_LEN); | |
1159 | ret = -EINVAL; | |
1160 | break; | |
1161 | } | |
1162 | break; | |
1163 | case Opt_initiator_sid: | |
8d213559 | 1164 | isid = match_strdup(args); |
6d180253 JJ |
1165 | if (!isid) { |
1166 | ret = -ENOMEM; | |
1167 | goto out; | |
1168 | } | |
60d645a4 | 1169 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1170 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1171 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1172 | PR_REG_ISID_LEN); | |
1173 | ret = -EINVAL; | |
1174 | break; | |
1175 | } | |
1176 | break; | |
1177 | case Opt_sa_res_key: | |
8d213559 | 1178 | ret = kstrtoull(args->from, 0, &tmp_ll); |
c66ac9db | 1179 | if (ret < 0) { |
8d213559 | 1180 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1181 | goto out; |
1182 | } | |
1183 | sa_res_key = (u64)tmp_ll; | |
1184 | break; | |
1185 | /* | |
1186 | * PR APTPL Metadata for Reservation | |
1187 | */ | |
1188 | case Opt_res_holder: | |
1189 | match_int(args, &arg); | |
1190 | res_holder = arg; | |
1191 | break; | |
1192 | case Opt_res_type: | |
1193 | match_int(args, &arg); | |
1194 | type = (u8)arg; | |
1195 | break; | |
1196 | case Opt_res_scope: | |
1197 | match_int(args, &arg); | |
1198 | scope = (u8)arg; | |
1199 | break; | |
1200 | case Opt_res_all_tg_pt: | |
1201 | match_int(args, &arg); | |
1202 | all_tg_pt = (int)arg; | |
1203 | break; | |
1204 | case Opt_mapped_lun: | |
1205 | match_int(args, &arg); | |
1206 | mapped_lun = (u32)arg; | |
1207 | break; | |
1208 | /* | |
1209 | * PR APTPL Metadata for Target Port | |
1210 | */ | |
1211 | case Opt_target_fabric: | |
8d213559 | 1212 | t_fabric = match_strdup(args); |
6d180253 JJ |
1213 | if (!t_fabric) { |
1214 | ret = -ENOMEM; | |
1215 | goto out; | |
1216 | } | |
c66ac9db NB |
1217 | break; |
1218 | case Opt_target_node: | |
8d213559 | 1219 | t_port = match_strdup(args); |
6d180253 JJ |
1220 | if (!t_port) { |
1221 | ret = -ENOMEM; | |
1222 | goto out; | |
1223 | } | |
60d645a4 | 1224 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1225 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1226 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1227 | PR_APTPL_MAX_TPORT_LEN); | |
1228 | ret = -EINVAL; | |
1229 | break; | |
1230 | } | |
1231 | break; | |
1232 | case Opt_tpgt: | |
1233 | match_int(args, &arg); | |
1234 | tpgt = (u16)arg; | |
1235 | break; | |
1236 | case Opt_port_rtpi: | |
1237 | match_int(args, &arg); | |
1238 | port_rpti = (u16)arg; | |
1239 | break; | |
1240 | case Opt_target_lun: | |
1241 | match_int(args, &arg); | |
1242 | target_lun = (u32)arg; | |
1243 | break; | |
1244 | default: | |
1245 | break; | |
1246 | } | |
1247 | } | |
1248 | ||
6708bb27 AG |
1249 | if (!i_port || !t_port || !sa_res_key) { |
1250 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
1251 | ret = -EINVAL; |
1252 | goto out; | |
1253 | } | |
1254 | ||
1255 | if (res_holder && !(type)) { | |
6708bb27 | 1256 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
1257 | " holder\n", type); |
1258 | ret = -EINVAL; | |
1259 | goto out; | |
1260 | } | |
1261 | ||
0fd97ccf | 1262 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
1263 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
1264 | res_holder, all_tg_pt, type); | |
1265 | out: | |
6d180253 JJ |
1266 | kfree(i_fabric); |
1267 | kfree(i_port); | |
1268 | kfree(isid); | |
1269 | kfree(t_fabric); | |
1270 | kfree(t_port); | |
c66ac9db NB |
1271 | kfree(orig); |
1272 | return (ret == 0) ? count : ret; | |
1273 | } | |
1274 | ||
1275 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); | |
1276 | ||
0fd97ccf | 1277 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
c66ac9db NB |
1278 | |
1279 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
1280 | &target_core_dev_pr_res_holder.attr, | |
1281 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, | |
1282 | &target_core_dev_pr_res_pr_generation.attr, | |
1283 | &target_core_dev_pr_res_pr_holder_tg_port.attr, | |
1284 | &target_core_dev_pr_res_pr_registered_i_pts.attr, | |
1285 | &target_core_dev_pr_res_pr_type.attr, | |
1286 | &target_core_dev_pr_res_type.attr, | |
1287 | &target_core_dev_pr_res_aptpl_active.attr, | |
1288 | &target_core_dev_pr_res_aptpl_metadata.attr, | |
1289 | NULL, | |
1290 | }; | |
1291 | ||
1292 | static struct configfs_item_operations target_core_dev_pr_ops = { | |
1293 | .show_attribute = target_core_dev_pr_attr_show, | |
1294 | .store_attribute = target_core_dev_pr_attr_store, | |
1295 | }; | |
1296 | ||
91e2e39b | 1297 | TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); |
c66ac9db | 1298 | |
91e2e39b | 1299 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1300 | |
73112edc | 1301 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
1302 | |
1303 | static ssize_t target_core_show_dev_info(void *p, char *page) | |
1304 | { | |
0fd97ccf CH |
1305 | struct se_device *dev = p; |
1306 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db NB |
1307 | int bl = 0; |
1308 | ssize_t read_bytes = 0; | |
1309 | ||
0fd97ccf | 1310 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 1311 | read_bytes += bl; |
0fd97ccf | 1312 | read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); |
c66ac9db NB |
1313 | return read_bytes; |
1314 | } | |
1315 | ||
1316 | static struct target_core_configfs_attribute target_core_attr_dev_info = { | |
1317 | .attr = { .ca_owner = THIS_MODULE, | |
1318 | .ca_name = "info", | |
1319 | .ca_mode = S_IRUGO }, | |
1320 | .show = target_core_show_dev_info, | |
1321 | .store = NULL, | |
1322 | }; | |
1323 | ||
1324 | static ssize_t target_core_store_dev_control( | |
1325 | void *p, | |
1326 | const char *page, | |
1327 | size_t count) | |
1328 | { | |
0fd97ccf CH |
1329 | struct se_device *dev = p; |
1330 | struct se_subsystem_api *t = dev->transport; | |
c66ac9db | 1331 | |
0fd97ccf | 1332 | return t->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
1333 | } |
1334 | ||
1335 | static struct target_core_configfs_attribute target_core_attr_dev_control = { | |
1336 | .attr = { .ca_owner = THIS_MODULE, | |
1337 | .ca_name = "control", | |
1338 | .ca_mode = S_IWUSR }, | |
1339 | .show = NULL, | |
1340 | .store = target_core_store_dev_control, | |
1341 | }; | |
1342 | ||
1343 | static ssize_t target_core_show_dev_alias(void *p, char *page) | |
1344 | { | |
0fd97ccf | 1345 | struct se_device *dev = p; |
c66ac9db | 1346 | |
0fd97ccf | 1347 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
1348 | return 0; |
1349 | ||
0fd97ccf | 1350 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
1351 | } |
1352 | ||
1353 | static ssize_t target_core_store_dev_alias( | |
1354 | void *p, | |
1355 | const char *page, | |
1356 | size_t count) | |
1357 | { | |
0fd97ccf CH |
1358 | struct se_device *dev = p; |
1359 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1360 | ssize_t read_bytes; |
1361 | ||
1362 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 1363 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
1364 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
1365 | SE_DEV_ALIAS_LEN-1); | |
1366 | return -EINVAL; | |
1367 | } | |
1368 | ||
0fd97ccf | 1369 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
1370 | if (!read_bytes) |
1371 | return -EINVAL; | |
0fd97ccf CH |
1372 | if (dev->dev_alias[read_bytes - 1] == '\n') |
1373 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 1374 | |
0fd97ccf | 1375 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 1376 | |
6708bb27 | 1377 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 1378 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1379 | config_item_name(&dev->dev_group.cg_item), |
1380 | dev->dev_alias); | |
c66ac9db NB |
1381 | |
1382 | return read_bytes; | |
1383 | } | |
1384 | ||
1385 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { | |
1386 | .attr = { .ca_owner = THIS_MODULE, | |
1387 | .ca_name = "alias", | |
1388 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1389 | .show = target_core_show_dev_alias, | |
1390 | .store = target_core_store_dev_alias, | |
1391 | }; | |
1392 | ||
1393 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) | |
1394 | { | |
0fd97ccf | 1395 | struct se_device *dev = p; |
c66ac9db | 1396 | |
0fd97ccf | 1397 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
1398 | return 0; |
1399 | ||
0fd97ccf | 1400 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
1401 | } |
1402 | ||
1403 | static ssize_t target_core_store_dev_udev_path( | |
1404 | void *p, | |
1405 | const char *page, | |
1406 | size_t count) | |
1407 | { | |
0fd97ccf CH |
1408 | struct se_device *dev = p; |
1409 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1410 | ssize_t read_bytes; |
1411 | ||
1412 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 1413 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
1414 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
1415 | SE_UDEV_PATH_LEN-1); | |
1416 | return -EINVAL; | |
1417 | } | |
1418 | ||
0fd97ccf | 1419 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 1420 | "%s", page); |
3011684c DC |
1421 | if (!read_bytes) |
1422 | return -EINVAL; | |
0fd97ccf CH |
1423 | if (dev->udev_path[read_bytes - 1] == '\n') |
1424 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 1425 | |
0fd97ccf | 1426 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 1427 | |
6708bb27 | 1428 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 1429 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
1430 | config_item_name(&dev->dev_group.cg_item), |
1431 | dev->udev_path); | |
c66ac9db NB |
1432 | |
1433 | return read_bytes; | |
1434 | } | |
1435 | ||
1436 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { | |
1437 | .attr = { .ca_owner = THIS_MODULE, | |
1438 | .ca_name = "udev_path", | |
1439 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1440 | .show = target_core_show_dev_udev_path, | |
1441 | .store = target_core_store_dev_udev_path, | |
1442 | }; | |
1443 | ||
64146db7 AG |
1444 | static ssize_t target_core_show_dev_enable(void *p, char *page) |
1445 | { | |
1446 | struct se_device *dev = p; | |
1447 | ||
1448 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); | |
1449 | } | |
1450 | ||
c66ac9db NB |
1451 | static ssize_t target_core_store_dev_enable( |
1452 | void *p, | |
1453 | const char *page, | |
1454 | size_t count) | |
1455 | { | |
0fd97ccf | 1456 | struct se_device *dev = p; |
c66ac9db | 1457 | char *ptr; |
0fd97ccf | 1458 | int ret; |
c66ac9db NB |
1459 | |
1460 | ptr = strstr(page, "1"); | |
6708bb27 AG |
1461 | if (!ptr) { |
1462 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
1463 | " is \"1\"\n"); |
1464 | return -EINVAL; | |
1465 | } | |
c66ac9db | 1466 | |
0fd97ccf CH |
1467 | ret = target_configure_device(dev); |
1468 | if (ret) | |
1469 | return ret; | |
c66ac9db NB |
1470 | return count; |
1471 | } | |
1472 | ||
1473 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { | |
1474 | .attr = { .ca_owner = THIS_MODULE, | |
1475 | .ca_name = "enable", | |
64146db7 AG |
1476 | .ca_mode = S_IRUGO | S_IWUSR }, |
1477 | .show = target_core_show_dev_enable, | |
c66ac9db NB |
1478 | .store = target_core_store_dev_enable, |
1479 | }; | |
1480 | ||
1481 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) | |
1482 | { | |
0fd97ccf | 1483 | struct se_device *dev = p; |
c66ac9db NB |
1484 | struct config_item *lu_ci; |
1485 | struct t10_alua_lu_gp *lu_gp; | |
1486 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1487 | ssize_t len = 0; | |
1488 | ||
c66ac9db | 1489 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
1490 | if (!lu_gp_mem) |
1491 | return 0; | |
c66ac9db NB |
1492 | |
1493 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1494 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1495 | if (lu_gp) { |
c66ac9db NB |
1496 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
1497 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
1498 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
1499 | } | |
1500 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1501 | ||
1502 | return len; | |
1503 | } | |
1504 | ||
1505 | static ssize_t target_core_store_alua_lu_gp( | |
1506 | void *p, | |
1507 | const char *page, | |
1508 | size_t count) | |
1509 | { | |
0fd97ccf CH |
1510 | struct se_device *dev = p; |
1511 | struct se_hba *hba = dev->se_hba; | |
c66ac9db NB |
1512 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
1513 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
1514 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1515 | int move = 0; | |
1516 | ||
c87fbd56 CH |
1517 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
1518 | if (!lu_gp_mem) | |
1519 | return 0; | |
1520 | ||
c66ac9db | 1521 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 1522 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
1523 | return -EINVAL; |
1524 | } | |
1525 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1526 | memcpy(buf, page, count); | |
1527 | /* | |
1528 | * Any ALUA logical unit alias besides "NULL" means we will be | |
1529 | * making a new group association. | |
1530 | */ | |
1531 | if (strcmp(strstrip(buf), "NULL")) { | |
1532 | /* | |
1533 | * core_alua_get_lu_gp_by_name() will increment reference to | |
1534 | * struct t10_alua_lu_gp. This reference is released with | |
1535 | * core_alua_get_lu_gp_by_name below(). | |
1536 | */ | |
1537 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 1538 | if (!lu_gp_new) |
c66ac9db NB |
1539 | return -ENODEV; |
1540 | } | |
c66ac9db NB |
1541 | |
1542 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
1543 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 1544 | if (lu_gp) { |
c66ac9db NB |
1545 | /* |
1546 | * Clearing an existing lu_gp association, and replacing | |
1547 | * with NULL | |
1548 | */ | |
6708bb27 AG |
1549 | if (!lu_gp_new) { |
1550 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
1551 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
1552 | " %hu\n", | |
1553 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1554 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1555 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
1556 | lu_gp->lu_gp_id); | |
1557 | ||
1558 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1559 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1560 | ||
1561 | return count; | |
1562 | } | |
1563 | /* | |
1564 | * Removing existing association of lu_gp_mem with lu_gp | |
1565 | */ | |
1566 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
1567 | move = 1; | |
1568 | } | |
1569 | /* | |
1570 | * Associate lu_gp_mem with lu_gp_new. | |
1571 | */ | |
1572 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
1573 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
1574 | ||
6708bb27 | 1575 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
1576 | " core/alua/lu_gps/%s, ID: %hu\n", |
1577 | (move) ? "Moving" : "Adding", | |
1578 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1579 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
1580 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
1581 | lu_gp_new->lu_gp_id); | |
1582 | ||
1583 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
1584 | return count; | |
1585 | } | |
1586 | ||
1587 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { | |
1588 | .attr = { .ca_owner = THIS_MODULE, | |
1589 | .ca_name = "alua_lu_gp", | |
1590 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1591 | .show = target_core_show_alua_lu_gp, | |
1592 | .store = target_core_store_alua_lu_gp, | |
1593 | }; | |
1594 | ||
229d4f11 HR |
1595 | static ssize_t target_core_show_dev_lba_map(void *p, char *page) |
1596 | { | |
1597 | struct se_device *dev = p; | |
1598 | struct t10_alua_lba_map *map; | |
1599 | struct t10_alua_lba_map_member *mem; | |
1600 | char *b = page; | |
1601 | int bl = 0; | |
1602 | char state; | |
1603 | ||
1604 | spin_lock(&dev->t10_alua.lba_map_lock); | |
1605 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
1606 | bl += sprintf(b + bl, "%u %u\n", | |
1607 | dev->t10_alua.lba_map_segment_size, | |
1608 | dev->t10_alua.lba_map_segment_multiplier); | |
1609 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
1610 | bl += sprintf(b + bl, "%llu %llu", | |
1611 | map->lba_map_first_lba, map->lba_map_last_lba); | |
1612 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
1613 | lba_map_mem_list) { | |
1614 | switch (mem->lba_map_mem_alua_state) { | |
1615 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
1616 | state = 'O'; | |
1617 | break; | |
1618 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
1619 | state = 'A'; | |
1620 | break; | |
1621 | case ALUA_ACCESS_STATE_STANDBY: | |
1622 | state = 'S'; | |
1623 | break; | |
1624 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
1625 | state = 'U'; | |
1626 | break; | |
1627 | default: | |
1628 | state = '.'; | |
1629 | break; | |
1630 | } | |
1631 | bl += sprintf(b + bl, " %d:%c", | |
1632 | mem->lba_map_mem_alua_pg_id, state); | |
1633 | } | |
1634 | bl += sprintf(b + bl, "\n"); | |
1635 | } | |
1636 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
1637 | return bl; | |
1638 | } | |
1639 | ||
1640 | static ssize_t target_core_store_dev_lba_map( | |
1641 | void *p, | |
1642 | const char *page, | |
1643 | size_t count) | |
1644 | { | |
1645 | struct se_device *dev = p; | |
1646 | struct t10_alua_lba_map *lba_map = NULL; | |
1647 | struct list_head lba_list; | |
1648 | char *map_entries, *ptr; | |
1649 | char state; | |
1650 | int pg_num = -1, pg; | |
1651 | int ret = 0, num = 0, pg_id, alua_state; | |
1652 | unsigned long start_lba = -1, end_lba = -1; | |
1653 | unsigned long segment_size = -1, segment_mult = -1; | |
1654 | ||
1655 | map_entries = kstrdup(page, GFP_KERNEL); | |
1656 | if (!map_entries) | |
1657 | return -ENOMEM; | |
1658 | ||
1659 | INIT_LIST_HEAD(&lba_list); | |
1660 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
1661 | if (!*ptr) | |
1662 | continue; | |
1663 | ||
1664 | if (num == 0) { | |
1665 | if (sscanf(ptr, "%lu %lu\n", | |
1666 | &segment_size, &segment_mult) != 2) { | |
1667 | pr_err("Invalid line %d\n", num); | |
1668 | ret = -EINVAL; | |
1669 | break; | |
1670 | } | |
1671 | num++; | |
1672 | continue; | |
1673 | } | |
1674 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
1675 | pr_err("Invalid line %d\n", num); | |
1676 | ret = -EINVAL; | |
1677 | break; | |
1678 | } | |
1679 | ptr = strchr(ptr, ' '); | |
1680 | if (!ptr) { | |
1681 | pr_err("Invalid line %d, missing end lba\n", num); | |
1682 | ret = -EINVAL; | |
1683 | break; | |
1684 | } | |
1685 | ptr++; | |
1686 | ptr = strchr(ptr, ' '); | |
1687 | if (!ptr) { | |
1688 | pr_err("Invalid line %d, missing state definitions\n", | |
1689 | num); | |
1690 | ret = -EINVAL; | |
1691 | break; | |
1692 | } | |
1693 | ptr++; | |
1694 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
1695 | start_lba, end_lba); | |
1696 | if (IS_ERR(lba_map)) { | |
1697 | ret = PTR_ERR(lba_map); | |
1698 | break; | |
1699 | } | |
1700 | pg = 0; | |
1701 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
1702 | switch (state) { | |
1703 | case 'O': | |
1704 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
1705 | break; | |
1706 | case 'A': | |
1707 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
1708 | break; | |
1709 | case 'S': | |
1710 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
1711 | break; | |
1712 | case 'U': | |
1713 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
1714 | break; | |
1715 | default: | |
1716 | pr_err("Invalid ALUA state '%c'\n", state); | |
1717 | ret = -EINVAL; | |
1718 | goto out; | |
1719 | } | |
1720 | ||
1721 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
1722 | pg_id, alua_state); | |
1723 | if (ret) { | |
1724 | pr_err("Invalid target descriptor %d:%c " | |
1725 | "at line %d\n", | |
1726 | pg_id, state, num); | |
1727 | break; | |
1728 | } | |
1729 | pg++; | |
1730 | ptr = strchr(ptr, ' '); | |
1731 | if (ptr) | |
1732 | ptr++; | |
1733 | else | |
1734 | break; | |
1735 | } | |
1736 | if (pg_num == -1) | |
1737 | pg_num = pg; | |
1738 | else if (pg != pg_num) { | |
1739 | pr_err("Only %d from %d port groups definitions " | |
1740 | "at line %d\n", pg, pg_num, num); | |
1741 | ret = -EINVAL; | |
1742 | break; | |
1743 | } | |
1744 | num++; | |
1745 | } | |
1746 | out: | |
1747 | if (ret) { | |
1748 | core_alua_free_lba_map(&lba_list); | |
1749 | count = ret; | |
1750 | } else | |
1751 | core_alua_set_lba_map(dev, &lba_list, | |
1752 | segment_size, segment_mult); | |
1753 | kfree(map_entries); | |
1754 | return count; | |
1755 | } | |
1756 | ||
1757 | static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { | |
1758 | .attr = { .ca_owner = THIS_MODULE, | |
1759 | .ca_name = "lba_map", | |
1760 | .ca_mode = S_IRUGO | S_IWUSR }, | |
1761 | .show = target_core_show_dev_lba_map, | |
1762 | .store = target_core_store_dev_lba_map, | |
1763 | }; | |
1764 | ||
73112edc | 1765 | static struct configfs_attribute *target_core_dev_attrs[] = { |
c66ac9db NB |
1766 | &target_core_attr_dev_info.attr, |
1767 | &target_core_attr_dev_control.attr, | |
1768 | &target_core_attr_dev_alias.attr, | |
1769 | &target_core_attr_dev_udev_path.attr, | |
1770 | &target_core_attr_dev_enable.attr, | |
1771 | &target_core_attr_dev_alua_lu_gp.attr, | |
229d4f11 | 1772 | &target_core_attr_dev_lba_map.attr, |
c66ac9db NB |
1773 | NULL, |
1774 | }; | |
1775 | ||
1776 | static void target_core_dev_release(struct config_item *item) | |
1777 | { | |
0fd97ccf CH |
1778 | struct config_group *dev_cg = to_config_group(item); |
1779 | struct se_device *dev = | |
1780 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 1781 | |
c66ac9db | 1782 | kfree(dev_cg->default_groups); |
0fd97ccf | 1783 | target_free_device(dev); |
c66ac9db NB |
1784 | } |
1785 | ||
1786 | static ssize_t target_core_dev_show(struct config_item *item, | |
1787 | struct configfs_attribute *attr, | |
1788 | char *page) | |
1789 | { | |
0fd97ccf CH |
1790 | struct config_group *dev_cg = to_config_group(item); |
1791 | struct se_device *dev = | |
1792 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1793 | struct target_core_configfs_attribute *tc_attr = container_of( |
1794 | attr, struct target_core_configfs_attribute, attr); | |
1795 | ||
6708bb27 | 1796 | if (!tc_attr->show) |
c66ac9db NB |
1797 | return -EINVAL; |
1798 | ||
0fd97ccf | 1799 | return tc_attr->show(dev, page); |
c66ac9db NB |
1800 | } |
1801 | ||
1802 | static ssize_t target_core_dev_store(struct config_item *item, | |
1803 | struct configfs_attribute *attr, | |
1804 | const char *page, size_t count) | |
1805 | { | |
0fd97ccf CH |
1806 | struct config_group *dev_cg = to_config_group(item); |
1807 | struct se_device *dev = | |
1808 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db NB |
1809 | struct target_core_configfs_attribute *tc_attr = container_of( |
1810 | attr, struct target_core_configfs_attribute, attr); | |
1811 | ||
6708bb27 | 1812 | if (!tc_attr->store) |
c66ac9db NB |
1813 | return -EINVAL; |
1814 | ||
0fd97ccf | 1815 | return tc_attr->store(dev, page, count); |
c66ac9db NB |
1816 | } |
1817 | ||
1818 | static struct configfs_item_operations target_core_dev_item_ops = { | |
1819 | .release = target_core_dev_release, | |
1820 | .show_attribute = target_core_dev_show, | |
1821 | .store_attribute = target_core_dev_store, | |
1822 | }; | |
1823 | ||
73112edc | 1824 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 1825 | |
73112edc | 1826 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
1827 | |
1828 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1829 | ||
1830 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); | |
1831 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ | |
1832 | static struct target_core_alua_lu_gp_attribute \ | |
1833 | target_core_alua_lu_gp_##_name = \ | |
1834 | __CONFIGFS_EATTR(_name, _mode, \ | |
1835 | target_core_alua_lu_gp_show_attr_##_name, \ | |
1836 | target_core_alua_lu_gp_store_attr_##_name); | |
1837 | ||
1838 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ | |
1839 | static struct target_core_alua_lu_gp_attribute \ | |
1840 | target_core_alua_lu_gp_##_name = \ | |
1841 | __CONFIGFS_EATTR_RO(_name, \ | |
1842 | target_core_alua_lu_gp_show_attr_##_name); | |
1843 | ||
1844 | /* | |
1845 | * lu_gp_id | |
1846 | */ | |
1847 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( | |
1848 | struct t10_alua_lu_gp *lu_gp, | |
1849 | char *page) | |
1850 | { | |
6708bb27 | 1851 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db NB |
1852 | return 0; |
1853 | ||
1854 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); | |
1855 | } | |
1856 | ||
1857 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( | |
1858 | struct t10_alua_lu_gp *lu_gp, | |
1859 | const char *page, | |
1860 | size_t count) | |
1861 | { | |
1862 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1863 | unsigned long lu_gp_id; | |
1864 | int ret; | |
1865 | ||
57103d7f | 1866 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 1867 | if (ret < 0) { |
57103d7f | 1868 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 1869 | " lu_gp_id\n", ret); |
57103d7f | 1870 | return ret; |
c66ac9db NB |
1871 | } |
1872 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 1873 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
1874 | " 0x0000ffff\n", lu_gp_id); |
1875 | return -EINVAL; | |
1876 | } | |
1877 | ||
1878 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
1879 | if (ret < 0) | |
1880 | return -EINVAL; | |
1881 | ||
6708bb27 | 1882 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
1883 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
1884 | config_item_name(&alua_lu_gp_cg->cg_item), | |
1885 | lu_gp->lu_gp_id); | |
1886 | ||
1887 | return count; | |
1888 | } | |
1889 | ||
1890 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); | |
1891 | ||
1892 | /* | |
1893 | * members | |
1894 | */ | |
1895 | static ssize_t target_core_alua_lu_gp_show_attr_members( | |
1896 | struct t10_alua_lu_gp *lu_gp, | |
1897 | char *page) | |
1898 | { | |
1899 | struct se_device *dev; | |
1900 | struct se_hba *hba; | |
c66ac9db NB |
1901 | struct t10_alua_lu_gp_member *lu_gp_mem; |
1902 | ssize_t len = 0, cur_len; | |
1903 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
1904 | ||
1905 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
1906 | ||
1907 | spin_lock(&lu_gp->lu_gp_lock); | |
1908 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
1909 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 1910 | hba = dev->se_hba; |
c66ac9db NB |
1911 | |
1912 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
1913 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 1914 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
1915 | cur_len++; /* Extra byte for NULL terminator */ |
1916 | ||
1917 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 1918 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
1919 | "_members buffer\n"); |
1920 | break; | |
1921 | } | |
1922 | memcpy(page+len, buf, cur_len); | |
1923 | len += cur_len; | |
1924 | } | |
1925 | spin_unlock(&lu_gp->lu_gp_lock); | |
1926 | ||
1927 | return len; | |
1928 | } | |
1929 | ||
1930 | SE_DEV_ALUA_LU_ATTR_RO(members); | |
1931 | ||
1932 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); | |
1933 | ||
1934 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
1935 | &target_core_alua_lu_gp_lu_gp_id.attr, | |
1936 | &target_core_alua_lu_gp_members.attr, | |
1937 | NULL, | |
1938 | }; | |
1939 | ||
1f6fe7cb NB |
1940 | static void target_core_alua_lu_gp_release(struct config_item *item) |
1941 | { | |
1942 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1943 | struct t10_alua_lu_gp, lu_gp_group); | |
1944 | ||
1945 | core_alua_free_lu_gp(lu_gp); | |
1946 | } | |
1947 | ||
c66ac9db | 1948 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 1949 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
1950 | .show_attribute = target_core_alua_lu_gp_attr_show, |
1951 | .store_attribute = target_core_alua_lu_gp_attr_store, | |
1952 | }; | |
1953 | ||
1954 | static struct config_item_type target_core_alua_lu_gp_cit = { | |
1955 | .ct_item_ops = &target_core_alua_lu_gp_ops, | |
1956 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
1957 | .ct_owner = THIS_MODULE, | |
1958 | }; | |
1959 | ||
1960 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
1961 | ||
1962 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
1963 | ||
1964 | static struct config_group *target_core_alua_create_lu_gp( | |
1965 | struct config_group *group, | |
1966 | const char *name) | |
1967 | { | |
1968 | struct t10_alua_lu_gp *lu_gp; | |
1969 | struct config_group *alua_lu_gp_cg = NULL; | |
1970 | struct config_item *alua_lu_gp_ci = NULL; | |
1971 | ||
1972 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
1973 | if (IS_ERR(lu_gp)) | |
1974 | return NULL; | |
1975 | ||
1976 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
1977 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
1978 | ||
1979 | config_group_init_type_name(alua_lu_gp_cg, name, | |
1980 | &target_core_alua_lu_gp_cit); | |
1981 | ||
6708bb27 | 1982 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
1983 | " Group: core/alua/lu_gps/%s\n", |
1984 | config_item_name(alua_lu_gp_ci)); | |
1985 | ||
1986 | return alua_lu_gp_cg; | |
1987 | ||
1988 | } | |
1989 | ||
1990 | static void target_core_alua_drop_lu_gp( | |
1991 | struct config_group *group, | |
1992 | struct config_item *item) | |
1993 | { | |
1994 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
1995 | struct t10_alua_lu_gp, lu_gp_group); | |
1996 | ||
6708bb27 | 1997 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
1998 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
1999 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2000 | /* |
2001 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2002 | * -> target_core_alua_lu_gp_release() | |
2003 | */ | |
c66ac9db | 2004 | config_item_put(item); |
c66ac9db NB |
2005 | } |
2006 | ||
2007 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2008 | .make_group = &target_core_alua_create_lu_gp, | |
2009 | .drop_item = &target_core_alua_drop_lu_gp, | |
2010 | }; | |
2011 | ||
2012 | static struct config_item_type target_core_alua_lu_gps_cit = { | |
2013 | .ct_item_ops = NULL, | |
2014 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2015 | .ct_owner = THIS_MODULE, | |
2016 | }; | |
2017 | ||
2018 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2019 | ||
2020 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2021 | ||
2022 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); | |
2023 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ | |
2024 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2025 | target_core_alua_tg_pt_gp_##_name = \ | |
2026 | __CONFIGFS_EATTR(_name, _mode, \ | |
2027 | target_core_alua_tg_pt_gp_show_attr_##_name, \ | |
2028 | target_core_alua_tg_pt_gp_store_attr_##_name); | |
2029 | ||
2030 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ | |
2031 | static struct target_core_alua_tg_pt_gp_attribute \ | |
2032 | target_core_alua_tg_pt_gp_##_name = \ | |
2033 | __CONFIGFS_EATTR_RO(_name, \ | |
2034 | target_core_alua_tg_pt_gp_show_attr_##_name); | |
2035 | ||
2036 | /* | |
2037 | * alua_access_state | |
2038 | */ | |
2039 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( | |
2040 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2041 | char *page) | |
2042 | { | |
2043 | return sprintf(page, "%d\n", | |
2044 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); | |
2045 | } | |
2046 | ||
2047 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( | |
2048 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2049 | const char *page, | |
2050 | size_t count) | |
2051 | { | |
0fd97ccf | 2052 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2053 | unsigned long tmp; |
2054 | int new_state, ret; | |
2055 | ||
6708bb27 | 2056 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2057 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2058 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2059 | return -EINVAL; | |
2060 | } | |
f1453773 NB |
2061 | if (!(dev->dev_flags & DF_CONFIGURED)) { |
2062 | pr_err("Unable to set alua_access_state while device is" | |
2063 | " not configured\n"); | |
2064 | return -ENODEV; | |
2065 | } | |
c66ac9db | 2066 | |
57103d7f | 2067 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2068 | if (ret < 0) { |
6708bb27 | 2069 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2070 | " %s\n", page); |
57103d7f | 2071 | return ret; |
c66ac9db NB |
2072 | } |
2073 | new_state = (int)tmp; | |
2074 | ||
125d0119 HR |
2075 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2076 | pr_err("Unable to process implicit configfs ALUA" | |
2077 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2078 | return -EINVAL; |
2079 | } | |
c66094bf HR |
2080 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
2081 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
2082 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
2083 | pr_err("Unable to process implicit configfs ALUA transition" | |
2084 | " while explicit ALUA management is enabled\n"); | |
2085 | return -EINVAL; | |
2086 | } | |
c66ac9db | 2087 | |
0fd97ccf | 2088 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2089 | NULL, NULL, new_state, 0); |
2090 | return (!ret) ? count : -EINVAL; | |
2091 | } | |
2092 | ||
2093 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); | |
2094 | ||
2095 | /* | |
2096 | * alua_access_status | |
2097 | */ | |
2098 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( | |
2099 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2100 | char *page) | |
2101 | { | |
2102 | return sprintf(page, "%s\n", | |
2103 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2104 | } | |
2105 | ||
2106 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( | |
2107 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2108 | const char *page, | |
2109 | size_t count) | |
2110 | { | |
2111 | unsigned long tmp; | |
2112 | int new_status, ret; | |
2113 | ||
6708bb27 AG |
2114 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2115 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2116 | " valid tg_pt_gp ID: %hu\n", |
2117 | tg_pt_gp->tg_pt_gp_valid_id); | |
2118 | return -EINVAL; | |
2119 | } | |
2120 | ||
57103d7f | 2121 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2122 | if (ret < 0) { |
6708bb27 | 2123 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2124 | " from %s\n", page); |
57103d7f | 2125 | return ret; |
c66ac9db NB |
2126 | } |
2127 | new_status = (int)tmp; | |
2128 | ||
2129 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2130 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2131 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2132 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2133 | new_status); |
2134 | return -EINVAL; | |
2135 | } | |
2136 | ||
2137 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2138 | return count; | |
2139 | } | |
2140 | ||
2141 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); | |
2142 | ||
2143 | /* | |
2144 | * alua_access_type | |
2145 | */ | |
2146 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( | |
2147 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2148 | char *page) | |
2149 | { | |
2150 | return core_alua_show_access_type(tg_pt_gp, page); | |
2151 | } | |
2152 | ||
2153 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( | |
2154 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2155 | const char *page, | |
2156 | size_t count) | |
2157 | { | |
2158 | return core_alua_store_access_type(tg_pt_gp, page, count); | |
2159 | } | |
2160 | ||
2161 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); | |
2162 | ||
6be526c4 HR |
2163 | /* |
2164 | * alua_supported_states | |
2165 | */ | |
6be526c4 | 2166 | |
b0a382c5 HR |
2167 | #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ |
2168 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ | |
2169 | struct t10_alua_tg_pt_gp *t, char *p) \ | |
2170 | { \ | |
2171 | return sprintf(p, "%d\n", !!(t->_var & _bit)); \ | |
6be526c4 HR |
2172 | } |
2173 | ||
b0a382c5 HR |
2174 | #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ |
2175 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ | |
2176 | struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ | |
2177 | { \ | |
2178 | unsigned long tmp; \ | |
2179 | int ret; \ | |
2180 | \ | |
2181 | if (!t->tg_pt_gp_valid_id) { \ | |
2182 | pr_err("Unable to do set ##_name ALUA state on non" \ | |
2183 | " valid tg_pt_gp ID: %hu\n", \ | |
2184 | t->tg_pt_gp_valid_id); \ | |
2185 | return -EINVAL; \ | |
2186 | } \ | |
2187 | \ | |
2188 | ret = kstrtoul(p, 0, &tmp); \ | |
2189 | if (ret < 0) { \ | |
2190 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2191 | return -EINVAL; \ | |
2192 | } \ | |
2193 | if (tmp > 1) { \ | |
2194 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2195 | return -EINVAL; \ | |
2196 | } \ | |
1f0b030c | 2197 | if (tmp) \ |
b0a382c5 HR |
2198 | t->_var |= _bit; \ |
2199 | else \ | |
2200 | t->_var &= ~_bit; \ | |
2201 | \ | |
2202 | return c; \ | |
2203 | } | |
2204 | ||
2205 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, | |
2206 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2207 | SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, | |
2208 | tg_pt_gp_alua_supported_states, ALUA_T_SUP); | |
2209 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); | |
2210 | ||
2211 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, | |
2212 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2213 | SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, | |
2214 | tg_pt_gp_alua_supported_states, ALUA_O_SUP); | |
2215 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); | |
2216 | ||
2217 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, | |
2218 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
2219 | SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, | |
2220 | tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); | |
c66094bf | 2221 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); |
b0a382c5 HR |
2222 | |
2223 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, | |
2224 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2225 | SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, | |
2226 | tg_pt_gp_alua_supported_states, ALUA_U_SUP); | |
2227 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); | |
2228 | ||
2229 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, | |
2230 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2231 | SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, | |
2232 | tg_pt_gp_alua_supported_states, ALUA_S_SUP); | |
2233 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); | |
2234 | ||
2235 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, | |
2236 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2237 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, | |
2238 | tg_pt_gp_alua_supported_states, ALUA_AO_SUP); | |
2239 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); | |
2240 | ||
2241 | SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, | |
2242 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2243 | SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, | |
2244 | tg_pt_gp_alua_supported_states, ALUA_AN_SUP); | |
2245 | SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); | |
6be526c4 | 2246 | |
c66ac9db NB |
2247 | /* |
2248 | * alua_write_metadata | |
2249 | */ | |
2250 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( | |
2251 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2252 | char *page) | |
2253 | { | |
2254 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); | |
2255 | } | |
2256 | ||
2257 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( | |
2258 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2259 | const char *page, | |
2260 | size_t count) | |
2261 | { | |
2262 | unsigned long tmp; | |
2263 | int ret; | |
2264 | ||
57103d7f | 2265 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2266 | if (ret < 0) { |
6708bb27 | 2267 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2268 | return ret; |
c66ac9db NB |
2269 | } |
2270 | ||
2271 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2272 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2273 | " %lu\n", tmp); |
2274 | return -EINVAL; | |
2275 | } | |
2276 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2277 | ||
2278 | return count; | |
2279 | } | |
2280 | ||
2281 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); | |
2282 | ||
2283 | ||
2284 | ||
2285 | /* | |
2286 | * nonop_delay_msecs | |
2287 | */ | |
2288 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( | |
2289 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2290 | char *page) | |
2291 | { | |
2292 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); | |
2293 | ||
2294 | } | |
2295 | ||
2296 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( | |
2297 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2298 | const char *page, | |
2299 | size_t count) | |
2300 | { | |
2301 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); | |
2302 | } | |
2303 | ||
2304 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); | |
2305 | ||
2306 | /* | |
2307 | * trans_delay_msecs | |
2308 | */ | |
2309 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( | |
2310 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2311 | char *page) | |
2312 | { | |
2313 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); | |
2314 | } | |
2315 | ||
2316 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( | |
2317 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2318 | const char *page, | |
2319 | size_t count) | |
2320 | { | |
2321 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); | |
2322 | } | |
2323 | ||
2324 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); | |
2325 | ||
5b9a4d72 | 2326 | /* |
125d0119 | 2327 | * implicit_trans_secs |
5b9a4d72 | 2328 | */ |
125d0119 | 2329 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( |
5b9a4d72 NB |
2330 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2331 | char *page) | |
2332 | { | |
125d0119 | 2333 | return core_alua_show_implicit_trans_secs(tg_pt_gp, page); |
5b9a4d72 NB |
2334 | } |
2335 | ||
125d0119 | 2336 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( |
5b9a4d72 NB |
2337 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
2338 | const char *page, | |
2339 | size_t count) | |
2340 | { | |
125d0119 | 2341 | return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); |
5b9a4d72 NB |
2342 | } |
2343 | ||
125d0119 | 2344 | SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); |
5b9a4d72 | 2345 | |
c66ac9db NB |
2346 | /* |
2347 | * preferred | |
2348 | */ | |
2349 | ||
2350 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( | |
2351 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2352 | char *page) | |
2353 | { | |
2354 | return core_alua_show_preferred_bit(tg_pt_gp, page); | |
2355 | } | |
2356 | ||
2357 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( | |
2358 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2359 | const char *page, | |
2360 | size_t count) | |
2361 | { | |
2362 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); | |
2363 | } | |
2364 | ||
2365 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); | |
2366 | ||
2367 | /* | |
2368 | * tg_pt_gp_id | |
2369 | */ | |
2370 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( | |
2371 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2372 | char *page) | |
2373 | { | |
6708bb27 | 2374 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db NB |
2375 | return 0; |
2376 | ||
2377 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); | |
2378 | } | |
2379 | ||
2380 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( | |
2381 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2382 | const char *page, | |
2383 | size_t count) | |
2384 | { | |
2385 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2386 | unsigned long tg_pt_gp_id; | |
2387 | int ret; | |
2388 | ||
57103d7f | 2389 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2390 | if (ret < 0) { |
57103d7f | 2391 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2392 | " tg_pt_gp_id\n", ret); |
57103d7f | 2393 | return ret; |
c66ac9db NB |
2394 | } |
2395 | if (tg_pt_gp_id > 0x0000ffff) { | |
6708bb27 | 2396 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2397 | " 0x0000ffff\n", tg_pt_gp_id); |
2398 | return -EINVAL; | |
2399 | } | |
2400 | ||
2401 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2402 | if (ret < 0) | |
2403 | return -EINVAL; | |
2404 | ||
6708bb27 | 2405 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2406 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2407 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2408 | tg_pt_gp->tg_pt_gp_id); | |
2409 | ||
2410 | return count; | |
2411 | } | |
2412 | ||
2413 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); | |
2414 | ||
2415 | /* | |
2416 | * members | |
2417 | */ | |
2418 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( | |
2419 | struct t10_alua_tg_pt_gp *tg_pt_gp, | |
2420 | char *page) | |
2421 | { | |
2422 | struct se_port *port; | |
2423 | struct se_portal_group *tpg; | |
2424 | struct se_lun *lun; | |
2425 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
2426 | ssize_t len = 0, cur_len; | |
2427 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2428 | ||
2429 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2430 | ||
2431 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
2432 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, | |
2433 | tg_pt_gp_mem_list) { | |
2434 | port = tg_pt_gp_mem->tg_pt; | |
2435 | tpg = port->sep_tpg; | |
2436 | lun = port->sep_lun; | |
2437 | ||
2438 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
e3d6f909 AG |
2439 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
2440 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), | |
2441 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2442 | config_item_name(&lun->lun_group.cg_item)); |
2443 | cur_len++; /* Extra byte for NULL terminator */ | |
2444 | ||
2445 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2446 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2447 | "_members buffer\n"); |
2448 | break; | |
2449 | } | |
2450 | memcpy(page+len, buf, cur_len); | |
2451 | len += cur_len; | |
2452 | } | |
2453 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2454 | ||
2455 | return len; | |
2456 | } | |
2457 | ||
2458 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); | |
2459 | ||
2460 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, | |
2461 | tg_pt_gp_group); | |
2462 | ||
2463 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2464 | &target_core_alua_tg_pt_gp_alua_access_state.attr, | |
2465 | &target_core_alua_tg_pt_gp_alua_access_status.attr, | |
2466 | &target_core_alua_tg_pt_gp_alua_access_type.attr, | |
b0a382c5 HR |
2467 | &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, |
2468 | &target_core_alua_tg_pt_gp_alua_support_offline.attr, | |
2469 | &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, | |
2470 | &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, | |
2471 | &target_core_alua_tg_pt_gp_alua_support_standby.attr, | |
2472 | &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, | |
2473 | &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, | |
c66ac9db NB |
2474 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, |
2475 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, | |
2476 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, | |
125d0119 | 2477 | &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, |
c66ac9db NB |
2478 | &target_core_alua_tg_pt_gp_preferred.attr, |
2479 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, | |
2480 | &target_core_alua_tg_pt_gp_members.attr, | |
2481 | NULL, | |
2482 | }; | |
2483 | ||
1f6fe7cb NB |
2484 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
2485 | { | |
2486 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2487 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2488 | ||
2489 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2490 | } | |
2491 | ||
c66ac9db | 2492 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 2493 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
2494 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
2495 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, | |
2496 | }; | |
2497 | ||
2498 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { | |
2499 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, | |
2500 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
2501 | .ct_owner = THIS_MODULE, | |
2502 | }; | |
2503 | ||
2504 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2505 | ||
72aca57b | 2506 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2507 | |
2508 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
2509 | struct config_group *group, | |
2510 | const char *name) | |
2511 | { | |
2512 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
2513 | alua_tg_pt_gps_group); | |
2514 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2515 | struct config_group *alua_tg_pt_gp_cg = NULL; |
2516 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
2517 | ||
0fd97ccf | 2518 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 2519 | if (!tg_pt_gp) |
c66ac9db NB |
2520 | return NULL; |
2521 | ||
2522 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
2523 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
2524 | ||
2525 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
2526 | &target_core_alua_tg_pt_gp_cit); | |
2527 | ||
6708bb27 | 2528 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
2529 | " Group: alua/tg_pt_gps/%s\n", |
2530 | config_item_name(alua_tg_pt_gp_ci)); | |
2531 | ||
2532 | return alua_tg_pt_gp_cg; | |
2533 | } | |
2534 | ||
2535 | static void target_core_alua_drop_tg_pt_gp( | |
2536 | struct config_group *group, | |
2537 | struct config_item *item) | |
2538 | { | |
2539 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
2540 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
2541 | ||
6708bb27 | 2542 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
2543 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
2544 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
2545 | /* |
2546 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
2547 | * -> target_core_alua_tg_pt_gp_release(). | |
2548 | */ | |
c66ac9db | 2549 | config_item_put(item); |
c66ac9db NB |
2550 | } |
2551 | ||
2552 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
2553 | .make_group = &target_core_alua_create_tg_pt_gp, | |
2554 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
2555 | }; | |
2556 | ||
72aca57b | 2557 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 2558 | |
72aca57b | 2559 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
2560 | |
2561 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
2562 | ||
2563 | /* | |
2564 | * target_core_alua_cit is a ConfigFS group that lives under | |
2565 | * /sys/kernel/config/target/core/alua. There are default groups | |
2566 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
2567 | * target_core_alua_cit in target_core_init_configfs() below. | |
2568 | */ | |
2569 | static struct config_item_type target_core_alua_cit = { | |
2570 | .ct_item_ops = NULL, | |
2571 | .ct_attrs = NULL, | |
2572 | .ct_owner = THIS_MODULE, | |
2573 | }; | |
2574 | ||
2575 | /* End functions for struct config_item_type target_core_alua_cit */ | |
2576 | ||
d23ab570 | 2577 | /* Start functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 NB |
2578 | |
2579 | static struct config_group *target_core_stat_mkdir( | |
2580 | struct config_group *group, | |
2581 | const char *name) | |
2582 | { | |
2583 | return ERR_PTR(-ENOSYS); | |
2584 | } | |
2585 | ||
2586 | static void target_core_stat_rmdir( | |
2587 | struct config_group *group, | |
2588 | struct config_item *item) | |
2589 | { | |
2590 | return; | |
2591 | } | |
2592 | ||
2593 | static struct configfs_group_operations target_core_stat_group_ops = { | |
2594 | .make_group = &target_core_stat_mkdir, | |
2595 | .drop_item = &target_core_stat_rmdir, | |
2596 | }; | |
2597 | ||
d23ab570 | 2598 | TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); |
12d23384 | 2599 | |
d23ab570 | 2600 | /* End functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 | 2601 | |
c66ac9db NB |
2602 | /* Start functions for struct config_item_type target_core_hba_cit */ |
2603 | ||
2604 | static struct config_group *target_core_make_subdev( | |
2605 | struct config_group *group, | |
2606 | const char *name) | |
2607 | { | |
2608 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
2609 | struct se_subsystem_api *t; |
2610 | struct config_item *hba_ci = &group->cg_item; | |
2611 | struct se_hba *hba = item_to_hba(hba_ci); | |
0fd97ccf | 2612 | struct se_device *dev; |
c66ac9db | 2613 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
12d23384 NB |
2614 | struct config_group *dev_stat_grp = NULL; |
2615 | int errno = -ENOMEM, ret; | |
c66ac9db | 2616 | |
12d23384 NB |
2617 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
2618 | if (ret) | |
2619 | return ERR_PTR(ret); | |
c66ac9db NB |
2620 | /* |
2621 | * Locate the struct se_subsystem_api from parent's struct se_hba. | |
2622 | */ | |
2623 | t = hba->transport; | |
2624 | ||
0fd97ccf CH |
2625 | dev = target_alloc_device(hba, name); |
2626 | if (!dev) | |
2627 | goto out_unlock; | |
2628 | ||
2629 | dev_cg = &dev->dev_group; | |
c66ac9db | 2630 | |
13f6a914 | 2631 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
c66ac9db | 2632 | GFP_KERNEL); |
6708bb27 | 2633 | if (!dev_cg->default_groups) |
0fd97ccf | 2634 | goto out_free_device; |
c66ac9db | 2635 | |
73112edc | 2636 | config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); |
0fd97ccf | 2637 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
f79a897e | 2638 | &t->tb_cits.tb_dev_attrib_cit); |
0fd97ccf | 2639 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
91e2e39b | 2640 | &t->tb_cits.tb_dev_pr_cit); |
0fd97ccf | 2641 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
f8d389c6 | 2642 | &t->tb_cits.tb_dev_wwn_cit); |
0fd97ccf | 2643 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
72aca57b | 2644 | "alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit); |
0fd97ccf | 2645 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
d23ab570 | 2646 | "statistics", &t->tb_cits.tb_dev_stat_cit); |
12d23384 | 2647 | |
0fd97ccf CH |
2648 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
2649 | dev_cg->default_groups[1] = &dev->dev_pr_group; | |
2650 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; | |
2651 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; | |
2652 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; | |
12d23384 | 2653 | dev_cg->default_groups[5] = NULL; |
c66ac9db | 2654 | /* |
12d23384 | 2655 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 2656 | */ |
0fd97ccf | 2657 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 2658 | if (!tg_pt_gp) |
0fd97ccf CH |
2659 | goto out_free_dev_cg_default_groups; |
2660 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; | |
c66ac9db | 2661 | |
0fd97ccf | 2662 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
13f6a914 | 2663 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2664 | GFP_KERNEL); |
6708bb27 AG |
2665 | if (!tg_pt_gp_cg->default_groups) { |
2666 | pr_err("Unable to allocate tg_pt_gp_cg->" | |
c66ac9db | 2667 | "default_groups\n"); |
0fd97ccf | 2668 | goto out_free_tg_pt_gp; |
c66ac9db NB |
2669 | } |
2670 | ||
2671 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, | |
2672 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
2673 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; | |
2674 | tg_pt_gp_cg->default_groups[1] = NULL; | |
12d23384 NB |
2675 | /* |
2676 | * Add core/$HBA/$DEV/statistics/ default groups | |
2677 | */ | |
0fd97ccf | 2678 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
13f6a914 | 2679 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
12d23384 NB |
2680 | GFP_KERNEL); |
2681 | if (!dev_stat_grp->default_groups) { | |
6708bb27 | 2682 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
0fd97ccf | 2683 | goto out_free_tg_pt_gp_cg_default_groups; |
12d23384 | 2684 | } |
0fd97ccf | 2685 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
2686 | |
2687 | mutex_unlock(&hba->hba_access_mutex); | |
0fd97ccf CH |
2688 | return dev_cg; |
2689 | ||
2690 | out_free_tg_pt_gp_cg_default_groups: | |
2691 | kfree(tg_pt_gp_cg->default_groups); | |
2692 | out_free_tg_pt_gp: | |
2693 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
2694 | out_free_dev_cg_default_groups: | |
2695 | kfree(dev_cg->default_groups); | |
2696 | out_free_device: | |
2697 | target_free_device(dev); | |
2698 | out_unlock: | |
c66ac9db | 2699 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 2700 | return ERR_PTR(errno); |
c66ac9db NB |
2701 | } |
2702 | ||
2703 | static void target_core_drop_subdev( | |
2704 | struct config_group *group, | |
2705 | struct config_item *item) | |
2706 | { | |
0fd97ccf CH |
2707 | struct config_group *dev_cg = to_config_group(item); |
2708 | struct se_device *dev = | |
2709 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2710 | struct se_hba *hba; |
c66ac9db | 2711 | struct config_item *df_item; |
0fd97ccf | 2712 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
1f6fe7cb | 2713 | int i; |
c66ac9db | 2714 | |
0fd97ccf | 2715 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 2716 | |
1f6fe7cb | 2717 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 2718 | |
0fd97ccf | 2719 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
12d23384 NB |
2720 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
2721 | df_item = &dev_stat_grp->default_groups[i]->cg_item; | |
2722 | dev_stat_grp->default_groups[i] = NULL; | |
2723 | config_item_put(df_item); | |
2724 | } | |
2725 | kfree(dev_stat_grp->default_groups); | |
2726 | ||
0fd97ccf | 2727 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
c66ac9db NB |
2728 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
2729 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; | |
2730 | tg_pt_gp_cg->default_groups[i] = NULL; | |
2731 | config_item_put(df_item); | |
2732 | } | |
2733 | kfree(tg_pt_gp_cg->default_groups); | |
1f6fe7cb NB |
2734 | /* |
2735 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
2736 | * directly from target_core_alua_tg_pt_gp_release(). | |
2737 | */ | |
0fd97ccf | 2738 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 2739 | |
c66ac9db NB |
2740 | for (i = 0; dev_cg->default_groups[i]; i++) { |
2741 | df_item = &dev_cg->default_groups[i]->cg_item; | |
2742 | dev_cg->default_groups[i] = NULL; | |
2743 | config_item_put(df_item); | |
2744 | } | |
c66ac9db | 2745 | /* |
0fd97ccf | 2746 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 2747 | */ |
1f6fe7cb | 2748 | config_item_put(item); |
c66ac9db | 2749 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
2750 | } |
2751 | ||
2752 | static struct configfs_group_operations target_core_hba_group_ops = { | |
2753 | .make_group = target_core_make_subdev, | |
2754 | .drop_item = target_core_drop_subdev, | |
2755 | }; | |
2756 | ||
2757 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); | |
2758 | #define SE_HBA_ATTR(_name, _mode) \ | |
2759 | static struct target_core_hba_attribute \ | |
2760 | target_core_hba_##_name = \ | |
2761 | __CONFIGFS_EATTR(_name, _mode, \ | |
2762 | target_core_hba_show_attr_##_name, \ | |
2763 | target_core_hba_store_attr_##_name); | |
2764 | ||
2765 | #define SE_HBA_ATTR_RO(_name) \ | |
2766 | static struct target_core_hba_attribute \ | |
2767 | target_core_hba_##_name = \ | |
2768 | __CONFIGFS_EATTR_RO(_name, \ | |
2769 | target_core_hba_show_attr_##_name); | |
2770 | ||
2771 | static ssize_t target_core_hba_show_attr_hba_info( | |
2772 | struct se_hba *hba, | |
2773 | char *page) | |
2774 | { | |
2775 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", | |
2776 | hba->hba_id, hba->transport->name, | |
2777 | TARGET_CORE_CONFIGFS_VERSION); | |
2778 | } | |
2779 | ||
2780 | SE_HBA_ATTR_RO(hba_info); | |
2781 | ||
2782 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, | |
2783 | char *page) | |
2784 | { | |
2785 | int hba_mode = 0; | |
2786 | ||
2787 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
2788 | hba_mode = 1; | |
2789 | ||
2790 | return sprintf(page, "%d\n", hba_mode); | |
2791 | } | |
2792 | ||
2793 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, | |
2794 | const char *page, size_t count) | |
2795 | { | |
2796 | struct se_subsystem_api *transport = hba->transport; | |
2797 | unsigned long mode_flag; | |
2798 | int ret; | |
2799 | ||
2800 | if (transport->pmode_enable_hba == NULL) | |
2801 | return -EINVAL; | |
2802 | ||
57103d7f | 2803 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 2804 | if (ret < 0) { |
6708bb27 | 2805 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 2806 | return ret; |
c66ac9db NB |
2807 | } |
2808 | ||
0fd97ccf | 2809 | if (hba->dev_count) { |
6708bb27 | 2810 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
2811 | return -EINVAL; |
2812 | } | |
c66ac9db NB |
2813 | |
2814 | ret = transport->pmode_enable_hba(hba, mode_flag); | |
2815 | if (ret < 0) | |
2816 | return -EINVAL; | |
2817 | if (ret > 0) | |
2818 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
2819 | else if (ret == 0) | |
2820 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
2821 | ||
2822 | return count; | |
2823 | } | |
2824 | ||
2825 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); | |
2826 | ||
2827 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); | |
2828 | ||
1f6fe7cb NB |
2829 | static void target_core_hba_release(struct config_item *item) |
2830 | { | |
2831 | struct se_hba *hba = container_of(to_config_group(item), | |
2832 | struct se_hba, hba_group); | |
2833 | core_delete_hba(hba); | |
2834 | } | |
2835 | ||
c66ac9db NB |
2836 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2837 | &target_core_hba_hba_info.attr, | |
2838 | &target_core_hba_hba_mode.attr, | |
2839 | NULL, | |
2840 | }; | |
2841 | ||
2842 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 2843 | .release = target_core_hba_release, |
c66ac9db NB |
2844 | .show_attribute = target_core_hba_attr_show, |
2845 | .store_attribute = target_core_hba_attr_store, | |
2846 | }; | |
2847 | ||
2848 | static struct config_item_type target_core_hba_cit = { | |
2849 | .ct_item_ops = &target_core_hba_item_ops, | |
2850 | .ct_group_ops = &target_core_hba_group_ops, | |
2851 | .ct_attrs = target_core_hba_attrs, | |
2852 | .ct_owner = THIS_MODULE, | |
2853 | }; | |
2854 | ||
2855 | static struct config_group *target_core_call_addhbatotarget( | |
2856 | struct config_group *group, | |
2857 | const char *name) | |
2858 | { | |
2859 | char *se_plugin_str, *str, *str2; | |
2860 | struct se_hba *hba; | |
2861 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
2862 | unsigned long plugin_dep_id = 0; | |
2863 | int ret; | |
2864 | ||
2865 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 2866 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 2867 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
2868 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
2869 | TARGET_CORE_NAME_MAX_LEN); | |
2870 | return ERR_PTR(-ENAMETOOLONG); | |
2871 | } | |
2872 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
2873 | ||
2874 | str = strstr(buf, "_"); | |
6708bb27 AG |
2875 | if (!str) { |
2876 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
2877 | return ERR_PTR(-EINVAL); |
2878 | } | |
2879 | se_plugin_str = buf; | |
2880 | /* | |
2881 | * Special case for subsystem plugins that have "_" in their names. | |
2882 | * Namely rd_direct and rd_mcp.. | |
2883 | */ | |
2884 | str2 = strstr(str+1, "_"); | |
6708bb27 | 2885 | if (str2) { |
c66ac9db NB |
2886 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
2887 | str2++; /* Skip to start of plugin dependent ID */ | |
2888 | str = str2; | |
2889 | } else { | |
2890 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
2891 | str++; /* Skip to start of plugin dependent ID */ | |
2892 | } | |
2893 | ||
57103d7f | 2894 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 2895 | if (ret < 0) { |
57103d7f | 2896 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2897 | " plugin_dep_id\n", ret); |
57103d7f | 2898 | return ERR_PTR(ret); |
c66ac9db NB |
2899 | } |
2900 | /* | |
2901 | * Load up TCM subsystem plugins if they have not already been loaded. | |
2902 | */ | |
dbc5623e | 2903 | transport_subsystem_check_init(); |
c66ac9db NB |
2904 | |
2905 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
2906 | if (IS_ERR(hba)) | |
2907 | return ERR_CAST(hba); | |
2908 | ||
2909 | config_group_init_type_name(&hba->hba_group, name, | |
2910 | &target_core_hba_cit); | |
2911 | ||
2912 | return &hba->hba_group; | |
2913 | } | |
2914 | ||
2915 | static void target_core_call_delhbafromtarget( | |
2916 | struct config_group *group, | |
2917 | struct config_item *item) | |
2918 | { | |
1f6fe7cb NB |
2919 | /* |
2920 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
2921 | * -> target_core_hba_release() | |
2922 | */ | |
c66ac9db | 2923 | config_item_put(item); |
c66ac9db NB |
2924 | } |
2925 | ||
2926 | static struct configfs_group_operations target_core_group_ops = { | |
2927 | .make_group = target_core_call_addhbatotarget, | |
2928 | .drop_item = target_core_call_delhbafromtarget, | |
2929 | }; | |
2930 | ||
2931 | static struct config_item_type target_core_cit = { | |
2932 | .ct_item_ops = NULL, | |
2933 | .ct_group_ops = &target_core_group_ops, | |
2934 | .ct_attrs = NULL, | |
2935 | .ct_owner = THIS_MODULE, | |
2936 | }; | |
2937 | ||
2938 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
2939 | ||
73112edc NB |
2940 | void target_core_setup_sub_cits(struct se_subsystem_api *sa) |
2941 | { | |
2942 | target_core_setup_dev_cit(sa); | |
f79a897e | 2943 | target_core_setup_dev_attrib_cit(sa); |
91e2e39b | 2944 | target_core_setup_dev_pr_cit(sa); |
f8d389c6 | 2945 | target_core_setup_dev_wwn_cit(sa); |
72aca57b | 2946 | target_core_setup_dev_alua_tg_pt_gps_cit(sa); |
d23ab570 | 2947 | target_core_setup_dev_stat_cit(sa); |
73112edc NB |
2948 | } |
2949 | EXPORT_SYMBOL(target_core_setup_sub_cits); | |
2950 | ||
54550fab | 2951 | static int __init target_core_init_configfs(void) |
c66ac9db NB |
2952 | { |
2953 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; | |
2954 | struct config_group *lu_gp_cg = NULL; | |
2955 | struct configfs_subsystem *subsys; | |
c66ac9db NB |
2956 | struct t10_alua_lu_gp *lu_gp; |
2957 | int ret; | |
2958 | ||
6708bb27 | 2959 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
2960 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
2961 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
2962 | ||
2963 | subsys = target_core_subsystem[0]; | |
2964 | config_group_init(&subsys->su_group); | |
2965 | mutex_init(&subsys->su_mutex); | |
2966 | ||
e3d6f909 | 2967 | ret = init_se_kmem_caches(); |
c66ac9db | 2968 | if (ret < 0) |
e3d6f909 | 2969 | return ret; |
c66ac9db NB |
2970 | /* |
2971 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
2972 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
2973 | */ | |
2974 | target_cg = &subsys->su_group; | |
ab6dae82 | 2975 | target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2976 | GFP_KERNEL); |
6708bb27 AG |
2977 | if (!target_cg->default_groups) { |
2978 | pr_err("Unable to allocate target_cg->default_groups\n"); | |
37bb7899 | 2979 | ret = -ENOMEM; |
c66ac9db NB |
2980 | goto out_global; |
2981 | } | |
2982 | ||
e3d6f909 | 2983 | config_group_init_type_name(&target_core_hbagroup, |
c66ac9db | 2984 | "core", &target_core_cit); |
e3d6f909 | 2985 | target_cg->default_groups[0] = &target_core_hbagroup; |
c66ac9db NB |
2986 | target_cg->default_groups[1] = NULL; |
2987 | /* | |
2988 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
2989 | */ | |
e3d6f909 | 2990 | hba_cg = &target_core_hbagroup; |
13f6a914 | 2991 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 2992 | GFP_KERNEL); |
6708bb27 AG |
2993 | if (!hba_cg->default_groups) { |
2994 | pr_err("Unable to allocate hba_cg->default_groups\n"); | |
37bb7899 | 2995 | ret = -ENOMEM; |
c66ac9db NB |
2996 | goto out_global; |
2997 | } | |
e3d6f909 | 2998 | config_group_init_type_name(&alua_group, |
c66ac9db | 2999 | "alua", &target_core_alua_cit); |
e3d6f909 | 3000 | hba_cg->default_groups[0] = &alua_group; |
c66ac9db NB |
3001 | hba_cg->default_groups[1] = NULL; |
3002 | /* | |
3003 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3004 | * groups under /sys/kernel/config/target/core/alua/ | |
3005 | */ | |
e3d6f909 | 3006 | alua_cg = &alua_group; |
13f6a914 | 3007 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3008 | GFP_KERNEL); |
6708bb27 AG |
3009 | if (!alua_cg->default_groups) { |
3010 | pr_err("Unable to allocate alua_cg->default_groups\n"); | |
37bb7899 | 3011 | ret = -ENOMEM; |
c66ac9db NB |
3012 | goto out_global; |
3013 | } | |
3014 | ||
e3d6f909 | 3015 | config_group_init_type_name(&alua_lu_gps_group, |
c66ac9db | 3016 | "lu_gps", &target_core_alua_lu_gps_cit); |
e3d6f909 | 3017 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
c66ac9db NB |
3018 | alua_cg->default_groups[1] = NULL; |
3019 | /* | |
3020 | * Add core/alua/lu_gps/default_lu_gp | |
3021 | */ | |
3022 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
3023 | if (IS_ERR(lu_gp)) { |
3024 | ret = -ENOMEM; | |
c66ac9db | 3025 | goto out_global; |
37bb7899 | 3026 | } |
c66ac9db | 3027 | |
e3d6f909 | 3028 | lu_gp_cg = &alua_lu_gps_group; |
13f6a914 | 3029 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
c66ac9db | 3030 | GFP_KERNEL); |
6708bb27 AG |
3031 | if (!lu_gp_cg->default_groups) { |
3032 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); | |
37bb7899 | 3033 | ret = -ENOMEM; |
c66ac9db NB |
3034 | goto out_global; |
3035 | } | |
3036 | ||
3037 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", | |
3038 | &target_core_alua_lu_gp_cit); | |
3039 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; | |
3040 | lu_gp_cg->default_groups[1] = NULL; | |
e3d6f909 | 3041 | default_lu_gp = lu_gp; |
c66ac9db NB |
3042 | /* |
3043 | * Register the target_core_mod subsystem with configfs. | |
3044 | */ | |
3045 | ret = configfs_register_subsystem(subsys); | |
3046 | if (ret < 0) { | |
6708bb27 | 3047 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3048 | ret, subsys->su_group.cg_item.ci_namebuf); |
3049 | goto out_global; | |
3050 | } | |
6708bb27 | 3051 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
c66ac9db NB |
3052 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
3053 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); | |
3054 | /* | |
3055 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3056 | */ | |
3057 | ret = rd_module_init(); | |
3058 | if (ret < 0) | |
3059 | goto out; | |
3060 | ||
0d0f9dfb RD |
3061 | ret = core_dev_setup_virtual_lun0(); |
3062 | if (ret < 0) | |
c66ac9db NB |
3063 | goto out; |
3064 | ||
f99715ac NB |
3065 | ret = target_xcopy_setup_pt(); |
3066 | if (ret < 0) | |
3067 | goto out; | |
3068 | ||
c66ac9db NB |
3069 | return 0; |
3070 | ||
3071 | out: | |
3072 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3073 | core_dev_release_virtual_lun0(); |
3074 | rd_module_exit(); | |
3075 | out_global: | |
e3d6f909 AG |
3076 | if (default_lu_gp) { |
3077 | core_alua_free_lu_gp(default_lu_gp); | |
3078 | default_lu_gp = NULL; | |
c66ac9db NB |
3079 | } |
3080 | if (lu_gp_cg) | |
3081 | kfree(lu_gp_cg->default_groups); | |
3082 | if (alua_cg) | |
3083 | kfree(alua_cg->default_groups); | |
3084 | if (hba_cg) | |
3085 | kfree(hba_cg->default_groups); | |
3086 | kfree(target_cg->default_groups); | |
e3d6f909 AG |
3087 | release_se_kmem_caches(); |
3088 | return ret; | |
c66ac9db NB |
3089 | } |
3090 | ||
54550fab | 3091 | static void __exit target_core_exit_configfs(void) |
c66ac9db NB |
3092 | { |
3093 | struct configfs_subsystem *subsys; | |
3094 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; | |
3095 | struct config_item *item; | |
3096 | int i; | |
3097 | ||
c66ac9db NB |
3098 | subsys = target_core_subsystem[0]; |
3099 | ||
e3d6f909 | 3100 | lu_gp_cg = &alua_lu_gps_group; |
c66ac9db NB |
3101 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
3102 | item = &lu_gp_cg->default_groups[i]->cg_item; | |
3103 | lu_gp_cg->default_groups[i] = NULL; | |
3104 | config_item_put(item); | |
3105 | } | |
3106 | kfree(lu_gp_cg->default_groups); | |
7c2bf6e9 | 3107 | lu_gp_cg->default_groups = NULL; |
c66ac9db | 3108 | |
e3d6f909 | 3109 | alua_cg = &alua_group; |
c66ac9db NB |
3110 | for (i = 0; alua_cg->default_groups[i]; i++) { |
3111 | item = &alua_cg->default_groups[i]->cg_item; | |
3112 | alua_cg->default_groups[i] = NULL; | |
3113 | config_item_put(item); | |
3114 | } | |
3115 | kfree(alua_cg->default_groups); | |
7c2bf6e9 | 3116 | alua_cg->default_groups = NULL; |
c66ac9db | 3117 | |
e3d6f909 | 3118 | hba_cg = &target_core_hbagroup; |
c66ac9db NB |
3119 | for (i = 0; hba_cg->default_groups[i]; i++) { |
3120 | item = &hba_cg->default_groups[i]->cg_item; | |
3121 | hba_cg->default_groups[i] = NULL; | |
3122 | config_item_put(item); | |
3123 | } | |
3124 | kfree(hba_cg->default_groups); | |
7c2bf6e9 NB |
3125 | hba_cg->default_groups = NULL; |
3126 | /* | |
3127 | * We expect subsys->su_group.default_groups to be released | |
3128 | * by configfs subsystem provider logic.. | |
3129 | */ | |
3130 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3131 | kfree(subsys->su_group.default_groups); |
3132 | ||
e3d6f909 AG |
3133 | core_alua_free_lu_gp(default_lu_gp); |
3134 | default_lu_gp = NULL; | |
7c2bf6e9 | 3135 | |
6708bb27 | 3136 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3137 | " Infrastructure\n"); |
3138 | ||
c66ac9db NB |
3139 | core_dev_release_virtual_lun0(); |
3140 | rd_module_exit(); | |
f99715ac | 3141 | target_xcopy_release_pt(); |
e3d6f909 | 3142 | release_se_kmem_caches(); |
c66ac9db NB |
3143 | } |
3144 | ||
3145 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3146 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3147 | MODULE_LICENSE("GPL"); | |
3148 | ||
3149 | module_init(target_core_init_configfs); | |
3150 | module_exit(target_core_exit_configfs); |