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c942fddf | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
c66ac9db NB |
2 | /******************************************************************************* |
3 | * Filename: target_core_configfs.c | |
4 | * | |
5 | * This file contains ConfigFS logic for the Generic Target Engine project. | |
6 | * | |
4c76251e | 7 | * (c) Copyright 2008-2013 Datera, Inc. |
c66ac9db NB |
8 | * |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. | |
12 | * | |
c66ac9db NB |
13 | ****************************************************************************/ |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
c66ac9db NB |
17 | #include <generated/utsrelease.h> |
18 | #include <linux/utsname.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/fs.h> | |
21 | #include <linux/namei.h> | |
22 | #include <linux/slab.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/unistd.h> | |
26 | #include <linux/string.h> | |
27 | #include <linux/parser.h> | |
28 | #include <linux/syscalls.h> | |
29 | #include <linux/configfs.h> | |
e3d6f909 | 30 | #include <linux/spinlock.h> |
c66ac9db NB |
31 | |
32 | #include <target/target_core_base.h> | |
c4795fb2 CH |
33 | #include <target/target_core_backend.h> |
34 | #include <target/target_core_fabric.h> | |
c66ac9db | 35 | |
e26d99ae | 36 | #include "target_core_internal.h" |
c66ac9db | 37 | #include "target_core_alua.h" |
c66ac9db NB |
38 | #include "target_core_pr.h" |
39 | #include "target_core_rd.h" | |
f99715ac | 40 | #include "target_core_xcopy.h" |
c66ac9db | 41 | |
73112edc | 42 | #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ |
0a06d430 | 43 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ |
73112edc | 44 | { \ |
0a06d430 | 45 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ |
73112edc NB |
46 | \ |
47 | cit->ct_item_ops = _item_ops; \ | |
48 | cit->ct_group_ops = _group_ops; \ | |
49 | cit->ct_attrs = _attrs; \ | |
0a06d430 CH |
50 | cit->ct_owner = tb->ops->owner; \ |
51 | pr_debug("Setup generic %s\n", __stringify(_name)); \ | |
52 | } | |
53 | ||
54 | #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ | |
55 | static void target_core_setup_##_name##_cit(struct target_backend *tb) \ | |
56 | { \ | |
57 | struct config_item_type *cit = &tb->tb_##_name##_cit; \ | |
58 | \ | |
59 | cit->ct_item_ops = _item_ops; \ | |
60 | cit->ct_group_ops = _group_ops; \ | |
61 | cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ | |
62 | cit->ct_owner = tb->ops->owner; \ | |
73112edc NB |
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 | 70 | |
e3d6f909 AG |
71 | static struct config_group target_core_hbagroup; |
72 | static struct config_group alua_group; | |
73 | static struct config_group alua_lu_gps_group; | |
74 | ||
c66ac9db NB |
75 | static inline struct se_hba * |
76 | item_to_hba(struct config_item *item) | |
77 | { | |
78 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
79 | } | |
80 | ||
81 | /* | |
82 | * Attributes for /sys/kernel/config/target/ | |
83 | */ | |
2eafd729 CH |
84 | static ssize_t target_core_item_version_show(struct config_item *item, |
85 | char *page) | |
c66ac9db NB |
86 | { |
87 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" | |
ce8dd25d | 88 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION, |
c66ac9db NB |
89 | utsname()->sysname, utsname()->machine); |
90 | } | |
91 | ||
2eafd729 | 92 | CONFIGFS_ATTR_RO(target_core_item_, version); |
c66ac9db | 93 | |
a96e9783 LD |
94 | char db_root[DB_ROOT_LEN] = DB_ROOT_DEFAULT; |
95 | static char db_root_stage[DB_ROOT_LEN]; | |
96 | ||
97 | static ssize_t target_core_item_dbroot_show(struct config_item *item, | |
98 | char *page) | |
99 | { | |
100 | return sprintf(page, "%s\n", db_root); | |
101 | } | |
102 | ||
103 | static ssize_t target_core_item_dbroot_store(struct config_item *item, | |
104 | const char *page, size_t count) | |
105 | { | |
106 | ssize_t read_bytes; | |
107 | struct file *fp; | |
108 | ||
109 | mutex_lock(&g_tf_lock); | |
110 | if (!list_empty(&g_tf_list)) { | |
111 | mutex_unlock(&g_tf_lock); | |
112 | pr_err("db_root: cannot be changed: target drivers registered"); | |
113 | return -EINVAL; | |
114 | } | |
115 | ||
116 | if (count > (DB_ROOT_LEN - 1)) { | |
117 | mutex_unlock(&g_tf_lock); | |
118 | pr_err("db_root: count %d exceeds DB_ROOT_LEN-1: %u\n", | |
119 | (int)count, DB_ROOT_LEN - 1); | |
120 | return -EINVAL; | |
121 | } | |
122 | ||
123 | read_bytes = snprintf(db_root_stage, DB_ROOT_LEN, "%s", page); | |
124 | if (!read_bytes) { | |
125 | mutex_unlock(&g_tf_lock); | |
126 | return -EINVAL; | |
127 | } | |
128 | if (db_root_stage[read_bytes - 1] == '\n') | |
129 | db_root_stage[read_bytes - 1] = '\0'; | |
130 | ||
131 | /* validate new db root before accepting it */ | |
132 | fp = filp_open(db_root_stage, O_RDONLY, 0); | |
133 | if (IS_ERR(fp)) { | |
134 | mutex_unlock(&g_tf_lock); | |
135 | pr_err("db_root: cannot open: %s\n", db_root_stage); | |
136 | return -EINVAL; | |
137 | } | |
45063097 | 138 | if (!S_ISDIR(file_inode(fp)->i_mode)) { |
8cc3bb07 | 139 | filp_close(fp, NULL); |
a96e9783 LD |
140 | mutex_unlock(&g_tf_lock); |
141 | pr_err("db_root: not a directory: %s\n", db_root_stage); | |
142 | return -EINVAL; | |
143 | } | |
8cc3bb07 | 144 | filp_close(fp, NULL); |
a96e9783 LD |
145 | |
146 | strncpy(db_root, db_root_stage, read_bytes); | |
147 | ||
148 | mutex_unlock(&g_tf_lock); | |
149 | ||
78a6295c LD |
150 | pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); |
151 | ||
a96e9783 LD |
152 | return read_bytes; |
153 | } | |
154 | ||
155 | CONFIGFS_ATTR(target_core_item_, dbroot); | |
156 | ||
c66ac9db NB |
157 | static struct target_fabric_configfs *target_core_get_fabric( |
158 | const char *name) | |
159 | { | |
160 | struct target_fabric_configfs *tf; | |
161 | ||
6708bb27 | 162 | if (!name) |
c66ac9db NB |
163 | return NULL; |
164 | ||
165 | mutex_lock(&g_tf_lock); | |
166 | list_for_each_entry(tf, &g_tf_list, tf_list) { | |
59a206b4 DD |
167 | const char *cmp_name = tf->tf_ops->fabric_alias; |
168 | if (!cmp_name) | |
169 | cmp_name = tf->tf_ops->fabric_name; | |
170 | if (!strcmp(cmp_name, name)) { | |
c66ac9db NB |
171 | atomic_inc(&tf->tf_access_cnt); |
172 | mutex_unlock(&g_tf_lock); | |
173 | return tf; | |
174 | } | |
175 | } | |
176 | mutex_unlock(&g_tf_lock); | |
177 | ||
178 | return NULL; | |
179 | } | |
180 | ||
181 | /* | |
182 | * Called from struct target_core_group_ops->make_group() | |
183 | */ | |
184 | static struct config_group *target_core_register_fabric( | |
185 | struct config_group *group, | |
186 | const char *name) | |
187 | { | |
188 | struct target_fabric_configfs *tf; | |
189 | int ret; | |
190 | ||
6708bb27 | 191 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
c66ac9db | 192 | " %s\n", group, name); |
e7b7af6e RD |
193 | |
194 | tf = target_core_get_fabric(name); | |
195 | if (!tf) { | |
62554910 NB |
196 | pr_debug("target_core_register_fabric() trying autoload for %s\n", |
197 | name); | |
e7b7af6e | 198 | |
c66ac9db | 199 | /* |
e7b7af6e RD |
200 | * Below are some hardcoded request_module() calls to automatically |
201 | * local fabric modules when the following is called: | |
c66ac9db | 202 | * |
e7b7af6e | 203 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
c66ac9db | 204 | * |
e7b7af6e RD |
205 | * Note that this does not limit which TCM fabric module can be |
206 | * registered, but simply provids auto loading logic for modules with | |
207 | * mkdir(2) system calls with known TCM fabric modules. | |
c66ac9db | 208 | */ |
e7b7af6e RD |
209 | |
210 | if (!strncmp(name, "iscsi", 5)) { | |
211 | /* | |
212 | * Automatically load the LIO Target fabric module when the | |
213 | * following is called: | |
214 | * | |
215 | * mkdir -p $CONFIGFS/target/iscsi | |
216 | */ | |
217 | ret = request_module("iscsi_target_mod"); | |
218 | if (ret < 0) { | |
62554910 NB |
219 | pr_debug("request_module() failed for" |
220 | " iscsi_target_mod.ko: %d\n", ret); | |
e7b7af6e RD |
221 | return ERR_PTR(-EINVAL); |
222 | } | |
223 | } else if (!strncmp(name, "loopback", 8)) { | |
224 | /* | |
225 | * Automatically load the tcm_loop fabric module when the | |
226 | * following is called: | |
227 | * | |
228 | * mkdir -p $CONFIGFS/target/loopback | |
229 | */ | |
230 | ret = request_module("tcm_loop"); | |
231 | if (ret < 0) { | |
62554910 NB |
232 | pr_debug("request_module() failed for" |
233 | " tcm_loop.ko: %d\n", ret); | |
e7b7af6e RD |
234 | return ERR_PTR(-EINVAL); |
235 | } | |
c66ac9db | 236 | } |
e7b7af6e RD |
237 | |
238 | tf = target_core_get_fabric(name); | |
c66ac9db NB |
239 | } |
240 | ||
6708bb27 | 241 | if (!tf) { |
62554910 NB |
242 | pr_debug("target_core_get_fabric() failed for %s\n", |
243 | name); | |
c66ac9db NB |
244 | return ERR_PTR(-EINVAL); |
245 | } | |
6708bb27 | 246 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
59a206b4 | 247 | " %s\n", tf->tf_ops->fabric_name); |
c66ac9db NB |
248 | /* |
249 | * On a successful target_core_get_fabric() look, the returned | |
250 | * struct target_fabric_configfs *tf will contain a usage reference. | |
251 | */ | |
6708bb27 | 252 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
968ebe75 | 253 | &tf->tf_wwn_cit); |
c66ac9db | 254 | |
968ebe75 | 255 | config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); |
1ae1602d | 256 | |
c66ac9db | 257 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
968ebe75 | 258 | &tf->tf_discovery_cit); |
1ae1602d | 259 | configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group); |
c66ac9db | 260 | |
6f3bf5a2 BVA |
261 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric: %s\n", |
262 | config_item_name(&tf->tf_group.cg_item)); | |
c66ac9db NB |
263 | return &tf->tf_group; |
264 | } | |
265 | ||
266 | /* | |
267 | * Called from struct target_core_group_ops->drop_item() | |
268 | */ | |
269 | static void target_core_deregister_fabric( | |
270 | struct config_group *group, | |
271 | struct config_item *item) | |
272 | { | |
273 | struct target_fabric_configfs *tf = container_of( | |
274 | to_config_group(item), struct target_fabric_configfs, tf_group); | |
c66ac9db | 275 | |
6708bb27 | 276 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
c66ac9db NB |
277 | " tf list\n", config_item_name(item)); |
278 | ||
6708bb27 | 279 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
59a206b4 | 280 | " %s\n", tf->tf_ops->fabric_name); |
c66ac9db NB |
281 | atomic_dec(&tf->tf_access_cnt); |
282 | ||
6708bb27 | 283 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
c66ac9db NB |
284 | " %s\n", config_item_name(item)); |
285 | ||
1ae1602d | 286 | configfs_remove_default_groups(&tf->tf_group); |
c66ac9db NB |
287 | config_item_put(item); |
288 | } | |
289 | ||
290 | static struct configfs_group_operations target_core_fabric_group_ops = { | |
291 | .make_group = &target_core_register_fabric, | |
292 | .drop_item = &target_core_deregister_fabric, | |
293 | }; | |
294 | ||
295 | /* | |
296 | * All item attributes appearing in /sys/kernel/target/ appear here. | |
297 | */ | |
298 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { | |
299 | &target_core_item_attr_version, | |
a96e9783 | 300 | &target_core_item_attr_dbroot, |
c66ac9db NB |
301 | NULL, |
302 | }; | |
303 | ||
304 | /* | |
305 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ | |
306 | */ | |
ece550b5 | 307 | static const struct config_item_type target_core_fabrics_item = { |
c66ac9db NB |
308 | .ct_group_ops = &target_core_fabric_group_ops, |
309 | .ct_attrs = target_core_fabric_item_attrs, | |
310 | .ct_owner = THIS_MODULE, | |
311 | }; | |
312 | ||
313 | static struct configfs_subsystem target_core_fabrics = { | |
314 | .su_group = { | |
315 | .cg_item = { | |
316 | .ci_namebuf = "target", | |
317 | .ci_type = &target_core_fabrics_item, | |
318 | }, | |
319 | }, | |
320 | }; | |
321 | ||
d588cf8f CH |
322 | int target_depend_item(struct config_item *item) |
323 | { | |
324 | return configfs_depend_item(&target_core_fabrics, item); | |
325 | } | |
326 | EXPORT_SYMBOL(target_depend_item); | |
327 | ||
328 | void target_undepend_item(struct config_item *item) | |
329 | { | |
9a9e3415 | 330 | return configfs_undepend_item(item); |
d588cf8f CH |
331 | } |
332 | EXPORT_SYMBOL(target_undepend_item); | |
c66ac9db NB |
333 | |
334 | /*############################################################################## | |
335 | // Start functions called by external Target Fabrics Modules | |
336 | //############################################################################*/ | |
337 | ||
9ac8928e | 338 | static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) |
c66ac9db | 339 | { |
59a206b4 DD |
340 | if (tfo->fabric_alias) { |
341 | if (strlen(tfo->fabric_alias) >= TARGET_FABRIC_NAME_SIZE) { | |
342 | pr_err("Passed alias: %s exceeds " | |
343 | "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_alias); | |
344 | return -EINVAL; | |
345 | } | |
c66ac9db | 346 | } |
30c7ca93 DD |
347 | if (!tfo->fabric_name) { |
348 | pr_err("Missing tfo->fabric_name\n"); | |
c66ac9db NB |
349 | return -EINVAL; |
350 | } | |
59a206b4 DD |
351 | if (strlen(tfo->fabric_name) >= TARGET_FABRIC_NAME_SIZE) { |
352 | pr_err("Passed name: %s exceeds " | |
353 | "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_name); | |
354 | return -EINVAL; | |
355 | } | |
6708bb27 AG |
356 | if (!tfo->tpg_get_wwn) { |
357 | pr_err("Missing tfo->tpg_get_wwn()\n"); | |
c66ac9db NB |
358 | return -EINVAL; |
359 | } | |
6708bb27 AG |
360 | if (!tfo->tpg_get_tag) { |
361 | pr_err("Missing tfo->tpg_get_tag()\n"); | |
c66ac9db NB |
362 | return -EINVAL; |
363 | } | |
6708bb27 AG |
364 | if (!tfo->tpg_check_demo_mode) { |
365 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); | |
c66ac9db NB |
366 | return -EINVAL; |
367 | } | |
6708bb27 AG |
368 | if (!tfo->tpg_check_demo_mode_cache) { |
369 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); | |
c66ac9db NB |
370 | return -EINVAL; |
371 | } | |
6708bb27 AG |
372 | if (!tfo->tpg_check_demo_mode_write_protect) { |
373 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); | |
c66ac9db NB |
374 | return -EINVAL; |
375 | } | |
6708bb27 AG |
376 | if (!tfo->tpg_check_prod_mode_write_protect) { |
377 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); | |
c66ac9db NB |
378 | return -EINVAL; |
379 | } | |
6708bb27 AG |
380 | if (!tfo->tpg_get_inst_index) { |
381 | pr_err("Missing tfo->tpg_get_inst_index()\n"); | |
c66ac9db NB |
382 | return -EINVAL; |
383 | } | |
35462975 | 384 | if (!tfo->release_cmd) { |
6708bb27 | 385 | pr_err("Missing tfo->release_cmd()\n"); |
c66ac9db NB |
386 | return -EINVAL; |
387 | } | |
6708bb27 AG |
388 | if (!tfo->sess_get_index) { |
389 | pr_err("Missing tfo->sess_get_index()\n"); | |
c66ac9db NB |
390 | return -EINVAL; |
391 | } | |
6708bb27 AG |
392 | if (!tfo->write_pending) { |
393 | pr_err("Missing tfo->write_pending()\n"); | |
c66ac9db NB |
394 | return -EINVAL; |
395 | } | |
6708bb27 AG |
396 | if (!tfo->set_default_node_attributes) { |
397 | pr_err("Missing tfo->set_default_node_attributes()\n"); | |
c66ac9db NB |
398 | return -EINVAL; |
399 | } | |
6708bb27 AG |
400 | if (!tfo->get_cmd_state) { |
401 | pr_err("Missing tfo->get_cmd_state()\n"); | |
c66ac9db NB |
402 | return -EINVAL; |
403 | } | |
6708bb27 AG |
404 | if (!tfo->queue_data_in) { |
405 | pr_err("Missing tfo->queue_data_in()\n"); | |
c66ac9db NB |
406 | return -EINVAL; |
407 | } | |
6708bb27 AG |
408 | if (!tfo->queue_status) { |
409 | pr_err("Missing tfo->queue_status()\n"); | |
c66ac9db NB |
410 | return -EINVAL; |
411 | } | |
6708bb27 AG |
412 | if (!tfo->queue_tm_rsp) { |
413 | pr_err("Missing tfo->queue_tm_rsp()\n"); | |
c66ac9db NB |
414 | return -EINVAL; |
415 | } | |
131e6abc NB |
416 | if (!tfo->aborted_task) { |
417 | pr_err("Missing tfo->aborted_task()\n"); | |
418 | return -EINVAL; | |
419 | } | |
9c28ca4f NB |
420 | if (!tfo->check_stop_free) { |
421 | pr_err("Missing tfo->check_stop_free()\n"); | |
422 | return -EINVAL; | |
423 | } | |
c66ac9db NB |
424 | /* |
425 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() | |
426 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in | |
427 | * target_core_fabric_configfs.c WWN+TPG group context code. | |
428 | */ | |
6708bb27 AG |
429 | if (!tfo->fabric_make_wwn) { |
430 | pr_err("Missing tfo->fabric_make_wwn()\n"); | |
c66ac9db NB |
431 | return -EINVAL; |
432 | } | |
6708bb27 AG |
433 | if (!tfo->fabric_drop_wwn) { |
434 | pr_err("Missing tfo->fabric_drop_wwn()\n"); | |
c66ac9db NB |
435 | return -EINVAL; |
436 | } | |
6708bb27 AG |
437 | if (!tfo->fabric_make_tpg) { |
438 | pr_err("Missing tfo->fabric_make_tpg()\n"); | |
c66ac9db NB |
439 | return -EINVAL; |
440 | } | |
6708bb27 AG |
441 | if (!tfo->fabric_drop_tpg) { |
442 | pr_err("Missing tfo->fabric_drop_tpg()\n"); | |
c66ac9db NB |
443 | return -EINVAL; |
444 | } | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
9ac8928e | 449 | int target_register_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 450 | { |
9ac8928e | 451 | struct target_fabric_configfs *tf; |
c66ac9db NB |
452 | int ret; |
453 | ||
9ac8928e CH |
454 | ret = target_fabric_tf_ops_check(fo); |
455 | if (ret) | |
456 | return ret; | |
457 | ||
458 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); | |
6708bb27 | 459 | if (!tf) { |
9ac8928e CH |
460 | pr_err("%s: could not allocate memory!\n", __func__); |
461 | return -ENOMEM; | |
c66ac9db | 462 | } |
c66ac9db | 463 | |
9ac8928e CH |
464 | INIT_LIST_HEAD(&tf->tf_list); |
465 | atomic_set(&tf->tf_access_cnt, 0); | |
ef0caf8d | 466 | tf->tf_ops = fo; |
9ac8928e CH |
467 | target_fabric_setup_cits(tf); |
468 | ||
469 | mutex_lock(&g_tf_lock); | |
470 | list_add_tail(&tf->tf_list, &g_tf_list); | |
471 | mutex_unlock(&g_tf_lock); | |
472 | ||
c66ac9db NB |
473 | return 0; |
474 | } | |
9ac8928e | 475 | EXPORT_SYMBOL(target_register_template); |
c66ac9db | 476 | |
9ac8928e | 477 | void target_unregister_template(const struct target_core_fabric_ops *fo) |
c66ac9db | 478 | { |
9ac8928e | 479 | struct target_fabric_configfs *t; |
c66ac9db | 480 | |
c66ac9db | 481 | mutex_lock(&g_tf_lock); |
9ac8928e | 482 | list_for_each_entry(t, &g_tf_list, tf_list) { |
59a206b4 | 483 | if (!strcmp(t->tf_ops->fabric_name, fo->fabric_name)) { |
9ac8928e CH |
484 | BUG_ON(atomic_read(&t->tf_access_cnt)); |
485 | list_del(&t->tf_list); | |
94509182 NB |
486 | mutex_unlock(&g_tf_lock); |
487 | /* | |
488 | * Wait for any outstanding fabric se_deve_entry->rcu_head | |
489 | * callbacks to complete post kfree_rcu(), before allowing | |
490 | * fabric driver unload of TFO->module to proceed. | |
491 | */ | |
492 | rcu_barrier(); | |
9ac8928e | 493 | kfree(t); |
94509182 | 494 | return; |
9ac8928e | 495 | } |
c66ac9db | 496 | } |
c66ac9db | 497 | mutex_unlock(&g_tf_lock); |
c66ac9db | 498 | } |
9ac8928e | 499 | EXPORT_SYMBOL(target_unregister_template); |
c66ac9db NB |
500 | |
501 | /*############################################################################## | |
502 | // Stop functions called by external Target Fabrics Modules | |
503 | //############################################################################*/ | |
504 | ||
2eafd729 CH |
505 | static inline struct se_dev_attrib *to_attrib(struct config_item *item) |
506 | { | |
507 | return container_of(to_config_group(item), struct se_dev_attrib, | |
508 | da_group); | |
509 | } | |
510 | ||
f79a897e | 511 | /* Start functions for struct config_item_type tb_dev_attrib_cit */ |
2eafd729 CH |
512 | #define DEF_CONFIGFS_ATTRIB_SHOW(_name) \ |
513 | static ssize_t _name##_show(struct config_item *item, char *page) \ | |
5873c4d1 | 514 | { \ |
2eafd729 CH |
515 | return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \ |
516 | } | |
517 | ||
518 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias); | |
519 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo); | |
520 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write); | |
521 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read); | |
522 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache); | |
523 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl); | |
524 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas); | |
525 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); | |
526 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); | |
527 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); | |
528 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); | |
b49d6f78 | 529 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_pr); |
2eafd729 CH |
530 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); |
531 | DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); | |
056e8924 | 532 | DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify); |
2eafd729 CH |
533 | DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); |
534 | DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); | |
535 | DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord); | |
536 | DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl); | |
537 | DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size); | |
538 | DEF_CONFIGFS_ATTRIB_SHOW(block_size); | |
539 | DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors); | |
540 | DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors); | |
541 | DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth); | |
542 | DEF_CONFIGFS_ATTRIB_SHOW(queue_depth); | |
543 | DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count); | |
544 | DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count); | |
545 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity); | |
546 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment); | |
e6f41633 | 547 | DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data); |
2eafd729 CH |
548 | DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); |
549 | ||
550 | #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ | |
551 | static ssize_t _name##_store(struct config_item *item, const char *page,\ | |
3effdb90 | 552 | size_t count) \ |
5873c4d1 | 553 | { \ |
2eafd729 | 554 | struct se_dev_attrib *da = to_attrib(item); \ |
3effdb90 | 555 | u32 val; \ |
5873c4d1 CH |
556 | int ret; \ |
557 | \ | |
3effdb90 CH |
558 | ret = kstrtou32(page, 0, &val); \ |
559 | if (ret < 0) \ | |
560 | return ret; \ | |
561 | da->_name = val; \ | |
562 | return count; \ | |
563 | } | |
564 | ||
2eafd729 CH |
565 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count); |
566 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count); | |
567 | DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity); | |
568 | DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment); | |
569 | DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len); | |
3effdb90 | 570 | |
2eafd729 CH |
571 | #define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \ |
572 | static ssize_t _name##_store(struct config_item *item, const char *page, \ | |
3effdb90 CH |
573 | size_t count) \ |
574 | { \ | |
2eafd729 | 575 | struct se_dev_attrib *da = to_attrib(item); \ |
3effdb90 CH |
576 | bool flag; \ |
577 | int ret; \ | |
5873c4d1 | 578 | \ |
3effdb90 CH |
579 | ret = strtobool(page, &flag); \ |
580 | if (ret < 0) \ | |
581 | return ret; \ | |
582 | da->_name = flag; \ | |
583 | return count; \ | |
584 | } | |
585 | ||
2eafd729 CH |
586 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); |
587 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); | |
588 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); | |
b49d6f78 | 589 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_pr); |
2eafd729 CH |
590 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); |
591 | DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); | |
3effdb90 | 592 | |
2eafd729 CH |
593 | #define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \ |
594 | static ssize_t _name##_store(struct config_item *item, const char *page,\ | |
3effdb90 CH |
595 | size_t count) \ |
596 | { \ | |
597 | printk_once(KERN_WARNING \ | |
234bdbc4 CVB |
598 | "ignoring deprecated %s attribute\n", \ |
599 | __stringify(_name)); \ | |
3effdb90 CH |
600 | return count; \ |
601 | } | |
602 | ||
2eafd729 CH |
603 | DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo); |
604 | DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read); | |
3effdb90 CH |
605 | |
606 | static void dev_set_t10_wwn_model_alias(struct se_device *dev) | |
607 | { | |
608 | const char *configname; | |
609 | ||
610 | configname = config_item_name(&dev->dev_group.cg_item); | |
b2da4abf | 611 | if (strlen(configname) >= INQUIRY_MODEL_LEN) { |
3effdb90 | 612 | pr_warn("dev[%p]: Backstore name '%s' is too long for " |
b2da4abf | 613 | "INQUIRY_MODEL, truncating to 15 characters\n", dev, |
3effdb90 CH |
614 | configname); |
615 | } | |
b2da4abf DD |
616 | /* |
617 | * XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1) | |
618 | * here without potentially breaking existing setups, so continue to | |
619 | * truncate one byte shorter than what can be carried in INQUIRY. | |
620 | */ | |
621 | strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN); | |
3effdb90 CH |
622 | } |
623 | ||
2eafd729 | 624 | static ssize_t emulate_model_alias_store(struct config_item *item, |
3effdb90 CH |
625 | const char *page, size_t count) |
626 | { | |
2eafd729 | 627 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
628 | struct se_device *dev = da->da_dev; |
629 | bool flag; | |
630 | int ret; | |
631 | ||
632 | if (dev->export_count) { | |
633 | pr_err("dev[%p]: Unable to change model alias" | |
634 | " while export_count is %d\n", | |
635 | dev, dev->export_count); | |
636 | return -EINVAL; | |
637 | } | |
638 | ||
639 | ret = strtobool(page, &flag); | |
640 | if (ret < 0) | |
641 | return ret; | |
642 | ||
b2da4abf | 643 | BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); |
3effdb90 CH |
644 | if (flag) { |
645 | dev_set_t10_wwn_model_alias(dev); | |
646 | } else { | |
b2da4abf DD |
647 | strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, |
648 | sizeof(dev->t10_wwn.model)); | |
3effdb90 CH |
649 | } |
650 | da->emulate_model_alias = flag; | |
651 | return count; | |
652 | } | |
653 | ||
2eafd729 | 654 | static ssize_t emulate_write_cache_store(struct config_item *item, |
3effdb90 CH |
655 | const char *page, size_t count) |
656 | { | |
2eafd729 | 657 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
658 | bool flag; |
659 | int ret; | |
660 | ||
661 | ret = strtobool(page, &flag); | |
662 | if (ret < 0) | |
663 | return ret; | |
664 | ||
665 | if (flag && da->da_dev->transport->get_write_cache) { | |
666 | pr_err("emulate_write_cache not supported for this device\n"); | |
667 | return -EINVAL; | |
668 | } | |
669 | ||
670 | da->emulate_write_cache = flag; | |
671 | pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", | |
672 | da->da_dev, flag); | |
673 | return count; | |
674 | } | |
675 | ||
2eafd729 | 676 | static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item, |
3effdb90 CH |
677 | const char *page, size_t count) |
678 | { | |
2eafd729 | 679 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
680 | u32 val; |
681 | int ret; | |
682 | ||
683 | ret = kstrtou32(page, 0, &val); | |
684 | if (ret < 0) | |
685 | return ret; | |
686 | ||
1bf630fd DD |
687 | if (val != TARGET_UA_INTLCK_CTRL_CLEAR |
688 | && val != TARGET_UA_INTLCK_CTRL_NO_CLEAR | |
689 | && val != TARGET_UA_INTLCK_CTRL_ESTABLISH_UA) { | |
3effdb90 CH |
690 | pr_err("Illegal value %d\n", val); |
691 | return -EINVAL; | |
692 | } | |
693 | ||
694 | if (da->da_dev->export_count) { | |
695 | pr_err("dev[%p]: Unable to change SE Device" | |
696 | " UA_INTRLCK_CTRL while export_count is %d\n", | |
697 | da->da_dev, da->da_dev->export_count); | |
698 | return -EINVAL; | |
699 | } | |
700 | da->emulate_ua_intlck_ctrl = val; | |
701 | pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", | |
702 | da->da_dev, val); | |
703 | return count; | |
704 | } | |
705 | ||
2eafd729 | 706 | static ssize_t emulate_tas_store(struct config_item *item, |
3effdb90 CH |
707 | const char *page, size_t count) |
708 | { | |
2eafd729 | 709 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
710 | bool flag; |
711 | int ret; | |
712 | ||
713 | ret = strtobool(page, &flag); | |
714 | if (ret < 0) | |
715 | return ret; | |
716 | ||
717 | if (da->da_dev->export_count) { | |
718 | pr_err("dev[%p]: Unable to change SE Device TAS while" | |
719 | " export_count is %d\n", | |
720 | da->da_dev, da->da_dev->export_count); | |
721 | return -EINVAL; | |
722 | } | |
723 | da->emulate_tas = flag; | |
724 | pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", | |
725 | da->da_dev, flag ? "Enabled" : "Disabled"); | |
726 | ||
727 | return count; | |
728 | } | |
729 | ||
2eafd729 | 730 | static ssize_t emulate_tpu_store(struct config_item *item, |
3effdb90 CH |
731 | const char *page, size_t count) |
732 | { | |
2eafd729 | 733 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
734 | bool flag; |
735 | int ret; | |
736 | ||
737 | ret = strtobool(page, &flag); | |
738 | if (ret < 0) | |
739 | return ret; | |
740 | ||
741 | /* | |
742 | * We expect this value to be non-zero when generic Block Layer | |
743 | * Discard supported is detected iblock_create_virtdevice(). | |
744 | */ | |
745 | if (flag && !da->max_unmap_block_desc_count) { | |
746 | pr_err("Generic Block Discard not supported\n"); | |
747 | return -ENOSYS; | |
748 | } | |
749 | ||
750 | da->emulate_tpu = flag; | |
751 | pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", | |
752 | da->da_dev, flag); | |
753 | return count; | |
754 | } | |
755 | ||
2eafd729 | 756 | static ssize_t emulate_tpws_store(struct config_item *item, |
3effdb90 CH |
757 | const char *page, size_t count) |
758 | { | |
2eafd729 | 759 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
760 | bool flag; |
761 | int ret; | |
762 | ||
763 | ret = strtobool(page, &flag); | |
764 | if (ret < 0) | |
765 | return ret; | |
766 | ||
767 | /* | |
768 | * We expect this value to be non-zero when generic Block Layer | |
769 | * Discard supported is detected iblock_create_virtdevice(). | |
770 | */ | |
771 | if (flag && !da->max_unmap_block_desc_count) { | |
772 | pr_err("Generic Block Discard not supported\n"); | |
773 | return -ENOSYS; | |
774 | } | |
775 | ||
776 | da->emulate_tpws = flag; | |
777 | pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", | |
778 | da->da_dev, flag); | |
779 | return count; | |
780 | } | |
781 | ||
2eafd729 | 782 | static ssize_t pi_prot_type_store(struct config_item *item, |
3effdb90 CH |
783 | const char *page, size_t count) |
784 | { | |
2eafd729 | 785 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
786 | int old_prot = da->pi_prot_type, ret; |
787 | struct se_device *dev = da->da_dev; | |
788 | u32 flag; | |
789 | ||
790 | ret = kstrtou32(page, 0, &flag); | |
791 | if (ret < 0) | |
792 | return ret; | |
793 | ||
794 | if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { | |
795 | pr_err("Illegal value %d for pi_prot_type\n", flag); | |
796 | return -EINVAL; | |
797 | } | |
798 | if (flag == 2) { | |
799 | pr_err("DIF TYPE2 protection currently not supported\n"); | |
800 | return -ENOSYS; | |
801 | } | |
802 | if (da->hw_pi_prot_type) { | |
803 | pr_warn("DIF protection enabled on underlying hardware," | |
804 | " ignoring\n"); | |
805 | return count; | |
806 | } | |
807 | if (!dev->transport->init_prot || !dev->transport->free_prot) { | |
808 | /* 0 is only allowed value for non-supporting backends */ | |
809 | if (flag == 0) | |
bc1a7d6a | 810 | return count; |
3effdb90 CH |
811 | |
812 | pr_err("DIF protection not supported by backend: %s\n", | |
813 | dev->transport->name); | |
814 | return -ENOSYS; | |
815 | } | |
cb0f32e1 | 816 | if (!target_dev_configured(dev)) { |
3effdb90 CH |
817 | pr_err("DIF protection requires device to be configured\n"); |
818 | return -ENODEV; | |
819 | } | |
820 | if (dev->export_count) { | |
821 | pr_err("dev[%p]: Unable to change SE Device PROT type while" | |
822 | " export_count is %d\n", dev, dev->export_count); | |
823 | return -EINVAL; | |
824 | } | |
825 | ||
826 | da->pi_prot_type = flag; | |
827 | ||
828 | if (flag && !old_prot) { | |
829 | ret = dev->transport->init_prot(dev); | |
830 | if (ret) { | |
831 | da->pi_prot_type = old_prot; | |
056e8924 | 832 | da->pi_prot_verify = (bool) da->pi_prot_type; |
3effdb90 CH |
833 | return ret; |
834 | } | |
835 | ||
836 | } else if (!flag && old_prot) { | |
837 | dev->transport->free_prot(dev); | |
838 | } | |
839 | ||
056e8924 | 840 | da->pi_prot_verify = (bool) da->pi_prot_type; |
3effdb90 CH |
841 | pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); |
842 | return count; | |
843 | } | |
844 | ||
b6cd7f34 DD |
845 | /* always zero, but attr needs to remain RW to avoid userspace breakage */ |
846 | static ssize_t pi_prot_format_show(struct config_item *item, char *page) | |
847 | { | |
848 | return snprintf(page, PAGE_SIZE, "0\n"); | |
849 | } | |
850 | ||
2eafd729 | 851 | static ssize_t pi_prot_format_store(struct config_item *item, |
3effdb90 CH |
852 | const char *page, size_t count) |
853 | { | |
2eafd729 | 854 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
855 | struct se_device *dev = da->da_dev; |
856 | bool flag; | |
857 | int ret; | |
858 | ||
859 | ret = strtobool(page, &flag); | |
860 | if (ret < 0) | |
861 | return ret; | |
862 | ||
863 | if (!flag) | |
864 | return count; | |
865 | ||
866 | if (!dev->transport->format_prot) { | |
867 | pr_err("DIF protection format not supported by backend %s\n", | |
868 | dev->transport->name); | |
869 | return -ENOSYS; | |
870 | } | |
cb0f32e1 | 871 | if (!target_dev_configured(dev)) { |
3effdb90 CH |
872 | pr_err("DIF protection format requires device to be configured\n"); |
873 | return -ENODEV; | |
874 | } | |
875 | if (dev->export_count) { | |
876 | pr_err("dev[%p]: Unable to format SE Device PROT type while" | |
877 | " export_count is %d\n", dev, dev->export_count); | |
878 | return -EINVAL; | |
879 | } | |
880 | ||
881 | ret = dev->transport->format_prot(dev); | |
882 | if (ret) | |
883 | return ret; | |
884 | ||
885 | pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); | |
886 | return count; | |
887 | } | |
888 | ||
056e8924 DM |
889 | static ssize_t pi_prot_verify_store(struct config_item *item, |
890 | const char *page, size_t count) | |
891 | { | |
892 | struct se_dev_attrib *da = to_attrib(item); | |
893 | bool flag; | |
894 | int ret; | |
895 | ||
896 | ret = strtobool(page, &flag); | |
897 | if (ret < 0) | |
898 | return ret; | |
899 | ||
900 | if (!flag) { | |
901 | da->pi_prot_verify = flag; | |
902 | return count; | |
903 | } | |
904 | if (da->hw_pi_prot_type) { | |
905 | pr_warn("DIF protection enabled on underlying hardware," | |
906 | " ignoring\n"); | |
907 | return count; | |
908 | } | |
909 | if (!da->pi_prot_type) { | |
910 | pr_warn("DIF protection not supported by backend, ignoring\n"); | |
911 | return count; | |
912 | } | |
913 | da->pi_prot_verify = flag; | |
914 | ||
915 | return count; | |
916 | } | |
917 | ||
2eafd729 | 918 | static ssize_t force_pr_aptpl_store(struct config_item *item, |
3effdb90 CH |
919 | const char *page, size_t count) |
920 | { | |
2eafd729 | 921 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
922 | bool flag; |
923 | int ret; | |
924 | ||
925 | ret = strtobool(page, &flag); | |
926 | if (ret < 0) | |
927 | return ret; | |
928 | if (da->da_dev->export_count) { | |
929 | pr_err("dev[%p]: Unable to set force_pr_aptpl while" | |
930 | " export_count is %d\n", | |
931 | da->da_dev, da->da_dev->export_count); | |
932 | return -EINVAL; | |
933 | } | |
934 | ||
935 | da->force_pr_aptpl = flag; | |
936 | pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); | |
937 | return count; | |
938 | } | |
939 | ||
2eafd729 | 940 | static ssize_t emulate_rest_reord_store(struct config_item *item, |
3effdb90 CH |
941 | const char *page, size_t count) |
942 | { | |
2eafd729 | 943 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
944 | bool flag; |
945 | int ret; | |
946 | ||
947 | ret = strtobool(page, &flag); | |
948 | if (ret < 0) | |
949 | return ret; | |
950 | ||
951 | if (flag != 0) { | |
952 | printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" | |
953 | " reordering not implemented\n", da->da_dev); | |
954 | return -ENOSYS; | |
955 | } | |
956 | da->emulate_rest_reord = flag; | |
957 | pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", | |
958 | da->da_dev, flag); | |
959 | return count; | |
960 | } | |
961 | ||
e6f41633 JP |
962 | static ssize_t unmap_zeroes_data_store(struct config_item *item, |
963 | const char *page, size_t count) | |
964 | { | |
965 | struct se_dev_attrib *da = to_attrib(item); | |
966 | bool flag; | |
967 | int ret; | |
968 | ||
969 | ret = strtobool(page, &flag); | |
970 | if (ret < 0) | |
971 | return ret; | |
972 | ||
973 | if (da->da_dev->export_count) { | |
974 | pr_err("dev[%p]: Unable to change SE Device" | |
975 | " unmap_zeroes_data while export_count is %d\n", | |
976 | da->da_dev, da->da_dev->export_count); | |
977 | return -EINVAL; | |
978 | } | |
979 | /* | |
980 | * We expect this value to be non-zero when generic Block Layer | |
981 | * Discard supported is detected iblock_configure_device(). | |
982 | */ | |
983 | if (flag && !da->max_unmap_block_desc_count) { | |
984 | pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set" | |
985 | " because max_unmap_block_desc_count is zero\n", | |
986 | da->da_dev); | |
9b3118ce | 987 | return -ENOSYS; |
e6f41633 JP |
988 | } |
989 | da->unmap_zeroes_data = flag; | |
990 | pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n", | |
991 | da->da_dev, flag); | |
2e498f25 | 992 | return count; |
e6f41633 JP |
993 | } |
994 | ||
3effdb90 CH |
995 | /* |
996 | * Note, this can only be called on unexported SE Device Object. | |
997 | */ | |
2eafd729 | 998 | static ssize_t queue_depth_store(struct config_item *item, |
3effdb90 CH |
999 | const char *page, size_t count) |
1000 | { | |
2eafd729 | 1001 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
1002 | struct se_device *dev = da->da_dev; |
1003 | u32 val; | |
1004 | int ret; | |
1005 | ||
1006 | ret = kstrtou32(page, 0, &val); | |
1007 | if (ret < 0) | |
1008 | return ret; | |
1009 | ||
1010 | if (dev->export_count) { | |
1011 | pr_err("dev[%p]: Unable to change SE Device TCQ while" | |
1012 | " export_count is %d\n", | |
1013 | dev, dev->export_count); | |
1014 | return -EINVAL; | |
1015 | } | |
1016 | if (!val) { | |
1017 | pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); | |
1018 | return -EINVAL; | |
1019 | } | |
1020 | ||
1021 | if (val > dev->dev_attrib.queue_depth) { | |
1022 | if (val > dev->dev_attrib.hw_queue_depth) { | |
1023 | pr_err("dev[%p]: Passed queue_depth:" | |
1024 | " %u exceeds TCM/SE_Device MAX" | |
1025 | " TCQ: %u\n", dev, val, | |
1026 | dev->dev_attrib.hw_queue_depth); | |
1027 | return -EINVAL; | |
1028 | } | |
1029 | } | |
1030 | da->queue_depth = dev->queue_depth = val; | |
1031 | pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); | |
1032 | return count; | |
1033 | } | |
1034 | ||
2eafd729 | 1035 | static ssize_t optimal_sectors_store(struct config_item *item, |
3effdb90 CH |
1036 | const char *page, size_t count) |
1037 | { | |
2eafd729 | 1038 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
1039 | u32 val; |
1040 | int ret; | |
1041 | ||
1042 | ret = kstrtou32(page, 0, &val); | |
1043 | if (ret < 0) | |
1044 | return ret; | |
1045 | ||
1046 | if (da->da_dev->export_count) { | |
1047 | pr_err("dev[%p]: Unable to change SE Device" | |
1048 | " optimal_sectors while export_count is %d\n", | |
1049 | da->da_dev, da->da_dev->export_count); | |
1050 | return -EINVAL; | |
1051 | } | |
1052 | if (val > da->hw_max_sectors) { | |
1053 | pr_err("dev[%p]: Passed optimal_sectors %u cannot be" | |
1054 | " greater than hw_max_sectors: %u\n", | |
1055 | da->da_dev, val, da->hw_max_sectors); | |
1056 | return -EINVAL; | |
1057 | } | |
1058 | ||
1059 | da->optimal_sectors = val; | |
1060 | pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", | |
1061 | da->da_dev, val); | |
1062 | return count; | |
5873c4d1 CH |
1063 | } |
1064 | ||
2eafd729 | 1065 | static ssize_t block_size_store(struct config_item *item, |
3effdb90 CH |
1066 | const char *page, size_t count) |
1067 | { | |
2eafd729 | 1068 | struct se_dev_attrib *da = to_attrib(item); |
3effdb90 CH |
1069 | u32 val; |
1070 | int ret; | |
1071 | ||
1072 | ret = kstrtou32(page, 0, &val); | |
1073 | if (ret < 0) | |
1074 | return ret; | |
5873c4d1 | 1075 | |
3effdb90 CH |
1076 | if (da->da_dev->export_count) { |
1077 | pr_err("dev[%p]: Unable to change SE Device block_size" | |
1078 | " while export_count is %d\n", | |
1079 | da->da_dev, da->da_dev->export_count); | |
1080 | return -EINVAL; | |
1081 | } | |
1082 | ||
1083 | if (val != 512 && val != 1024 && val != 2048 && val != 4096) { | |
1084 | pr_err("dev[%p]: Illegal value for block_device: %u" | |
1085 | " for SE device, must be 512, 1024, 2048 or 4096\n", | |
1086 | da->da_dev, val); | |
1087 | return -EINVAL; | |
1088 | } | |
1089 | ||
1090 | da->block_size = val; | |
1091 | if (da->max_bytes_per_io) | |
1092 | da->hw_max_sectors = da->max_bytes_per_io / val; | |
1093 | ||
1094 | pr_debug("dev[%p]: SE Device block_size changed to %u\n", | |
1095 | da->da_dev, val); | |
1096 | return count; | |
1097 | } | |
5873c4d1 | 1098 | |
c17d5d5f MC |
1099 | static ssize_t alua_support_show(struct config_item *item, char *page) |
1100 | { | |
1101 | struct se_dev_attrib *da = to_attrib(item); | |
1102 | u8 flags = da->da_dev->transport->transport_flags; | |
1103 | ||
1104 | return snprintf(page, PAGE_SIZE, "%d\n", | |
1105 | flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1); | |
1106 | } | |
1107 | ||
1108 | static ssize_t pgr_support_show(struct config_item *item, char *page) | |
1109 | { | |
1110 | struct se_dev_attrib *da = to_attrib(item); | |
1111 | u8 flags = da->da_dev->transport->transport_flags; | |
1112 | ||
1113 | return snprintf(page, PAGE_SIZE, "%d\n", | |
1114 | flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); | |
1115 | } | |
1116 | ||
2eafd729 CH |
1117 | CONFIGFS_ATTR(, emulate_model_alias); |
1118 | CONFIGFS_ATTR(, emulate_dpo); | |
1119 | CONFIGFS_ATTR(, emulate_fua_write); | |
1120 | CONFIGFS_ATTR(, emulate_fua_read); | |
1121 | CONFIGFS_ATTR(, emulate_write_cache); | |
1122 | CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); | |
1123 | CONFIGFS_ATTR(, emulate_tas); | |
1124 | CONFIGFS_ATTR(, emulate_tpu); | |
1125 | CONFIGFS_ATTR(, emulate_tpws); | |
1126 | CONFIGFS_ATTR(, emulate_caw); | |
1127 | CONFIGFS_ATTR(, emulate_3pc); | |
b49d6f78 | 1128 | CONFIGFS_ATTR(, emulate_pr); |
2eafd729 CH |
1129 | CONFIGFS_ATTR(, pi_prot_type); |
1130 | CONFIGFS_ATTR_RO(, hw_pi_prot_type); | |
b6cd7f34 | 1131 | CONFIGFS_ATTR(, pi_prot_format); |
056e8924 | 1132 | CONFIGFS_ATTR(, pi_prot_verify); |
2eafd729 CH |
1133 | CONFIGFS_ATTR(, enforce_pr_isids); |
1134 | CONFIGFS_ATTR(, is_nonrot); | |
1135 | CONFIGFS_ATTR(, emulate_rest_reord); | |
1136 | CONFIGFS_ATTR(, force_pr_aptpl); | |
1137 | CONFIGFS_ATTR_RO(, hw_block_size); | |
1138 | CONFIGFS_ATTR(, block_size); | |
1139 | CONFIGFS_ATTR_RO(, hw_max_sectors); | |
1140 | CONFIGFS_ATTR(, optimal_sectors); | |
1141 | CONFIGFS_ATTR_RO(, hw_queue_depth); | |
1142 | CONFIGFS_ATTR(, queue_depth); | |
1143 | CONFIGFS_ATTR(, max_unmap_lba_count); | |
1144 | CONFIGFS_ATTR(, max_unmap_block_desc_count); | |
1145 | CONFIGFS_ATTR(, unmap_granularity); | |
1146 | CONFIGFS_ATTR(, unmap_granularity_alignment); | |
e6f41633 | 1147 | CONFIGFS_ATTR(, unmap_zeroes_data); |
2eafd729 | 1148 | CONFIGFS_ATTR(, max_write_same_len); |
c17d5d5f MC |
1149 | CONFIGFS_ATTR_RO(, alua_support); |
1150 | CONFIGFS_ATTR_RO(, pgr_support); | |
c66ac9db | 1151 | |
5873c4d1 CH |
1152 | /* |
1153 | * dev_attrib attributes for devices using the target core SBC/SPC | |
1154 | * interpreter. Any backend using spc_parse_cdb should be using | |
1155 | * these. | |
1156 | */ | |
1157 | struct configfs_attribute *sbc_attrib_attrs[] = { | |
2eafd729 CH |
1158 | &attr_emulate_model_alias, |
1159 | &attr_emulate_dpo, | |
1160 | &attr_emulate_fua_write, | |
1161 | &attr_emulate_fua_read, | |
1162 | &attr_emulate_write_cache, | |
1163 | &attr_emulate_ua_intlck_ctrl, | |
1164 | &attr_emulate_tas, | |
1165 | &attr_emulate_tpu, | |
1166 | &attr_emulate_tpws, | |
1167 | &attr_emulate_caw, | |
1168 | &attr_emulate_3pc, | |
b49d6f78 | 1169 | &attr_emulate_pr, |
2eafd729 CH |
1170 | &attr_pi_prot_type, |
1171 | &attr_hw_pi_prot_type, | |
1172 | &attr_pi_prot_format, | |
056e8924 | 1173 | &attr_pi_prot_verify, |
2eafd729 CH |
1174 | &attr_enforce_pr_isids, |
1175 | &attr_is_nonrot, | |
1176 | &attr_emulate_rest_reord, | |
1177 | &attr_force_pr_aptpl, | |
1178 | &attr_hw_block_size, | |
1179 | &attr_block_size, | |
1180 | &attr_hw_max_sectors, | |
1181 | &attr_optimal_sectors, | |
1182 | &attr_hw_queue_depth, | |
1183 | &attr_queue_depth, | |
1184 | &attr_max_unmap_lba_count, | |
1185 | &attr_max_unmap_block_desc_count, | |
1186 | &attr_unmap_granularity, | |
1187 | &attr_unmap_granularity_alignment, | |
e6f41633 | 1188 | &attr_unmap_zeroes_data, |
2eafd729 | 1189 | &attr_max_write_same_len, |
c17d5d5f MC |
1190 | &attr_alua_support, |
1191 | &attr_pgr_support, | |
5873c4d1 CH |
1192 | NULL, |
1193 | }; | |
1194 | EXPORT_SYMBOL(sbc_attrib_attrs); | |
1195 | ||
5873c4d1 CH |
1196 | /* |
1197 | * Minimal dev_attrib attributes for devices passing through CDBs. | |
1198 | * In this case we only provide a few read-only attributes for | |
1199 | * backwards compatibility. | |
1200 | */ | |
1201 | struct configfs_attribute *passthrough_attrib_attrs[] = { | |
2eafd729 CH |
1202 | &attr_hw_pi_prot_type, |
1203 | &attr_hw_block_size, | |
1204 | &attr_hw_max_sectors, | |
1205 | &attr_hw_queue_depth, | |
c17d5d5f MC |
1206 | &attr_alua_support, |
1207 | &attr_pgr_support, | |
5873c4d1 CH |
1208 | NULL, |
1209 | }; | |
1210 | EXPORT_SYMBOL(passthrough_attrib_attrs); | |
1211 | ||
2eafd729 | 1212 | TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); |
8dc31ff9 | 1213 | TB_CIT_SETUP_DRV(dev_action, NULL, NULL); |
c66ac9db | 1214 | |
f79a897e | 1215 | /* End functions for struct config_item_type tb_dev_attrib_cit */ |
c66ac9db | 1216 | |
f8d389c6 | 1217 | /* Start functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1218 | |
2eafd729 CH |
1219 | static struct t10_wwn *to_t10_wwn(struct config_item *item) |
1220 | { | |
1221 | return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); | |
1222 | } | |
c66ac9db | 1223 | |
0322913c AA |
1224 | static ssize_t target_check_inquiry_data(char *buf) |
1225 | { | |
1226 | size_t len; | |
1227 | int i; | |
1228 | ||
1229 | len = strlen(buf); | |
1230 | ||
1231 | /* | |
1232 | * SPC 4.3.1: | |
1233 | * ASCII data fields shall contain only ASCII printable characters | |
1234 | * (i.e., code values 20h to 7Eh) and may be terminated with one or | |
1235 | * more ASCII null (00h) characters. | |
1236 | */ | |
1237 | for (i = 0; i < len; i++) { | |
1238 | if (buf[i] < 0x20 || buf[i] > 0x7E) { | |
1239 | pr_err("Emulated T10 Inquiry Data contains non-ASCII-printable characters\n"); | |
1240 | return -EINVAL; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | return len; | |
1245 | } | |
1246 | ||
54a6f3f6 DD |
1247 | /* |
1248 | * STANDARD and VPD page 0x83 T10 Vendor Identification | |
1249 | */ | |
1250 | static ssize_t target_wwn_vendor_id_show(struct config_item *item, | |
1251 | char *page) | |
1252 | { | |
1253 | return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]); | |
1254 | } | |
1255 | ||
1256 | static ssize_t target_wwn_vendor_id_store(struct config_item *item, | |
1257 | const char *page, size_t count) | |
1258 | { | |
1259 | struct t10_wwn *t10_wwn = to_t10_wwn(item); | |
1260 | struct se_device *dev = t10_wwn->t10_dev; | |
1261 | /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ | |
1262 | unsigned char buf[INQUIRY_VENDOR_LEN + 2]; | |
1263 | char *stripped = NULL; | |
ee26724a CIK |
1264 | size_t len; |
1265 | ssize_t ret; | |
54a6f3f6 DD |
1266 | |
1267 | len = strlcpy(buf, page, sizeof(buf)); | |
1268 | if (len < sizeof(buf)) { | |
1269 | /* Strip any newline added from userspace. */ | |
1270 | stripped = strstrip(buf); | |
1271 | len = strlen(stripped); | |
1272 | } | |
1273 | if (len > INQUIRY_VENDOR_LEN) { | |
1274 | pr_err("Emulated T10 Vendor Identification exceeds" | |
1275 | " INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN) | |
1276 | "\n"); | |
1277 | return -EOVERFLOW; | |
1278 | } | |
1279 | ||
0322913c AA |
1280 | ret = target_check_inquiry_data(stripped); |
1281 | ||
1282 | if (ret < 0) | |
1283 | return ret; | |
54a6f3f6 DD |
1284 | |
1285 | /* | |
1286 | * Check to see if any active exports exist. If they do exist, fail | |
1287 | * here as changing this information on the fly (underneath the | |
1288 | * initiator side OS dependent multipath code) could cause negative | |
1289 | * effects. | |
1290 | */ | |
1291 | if (dev->export_count) { | |
1292 | pr_err("Unable to set T10 Vendor Identification while" | |
1293 | " active %d exports exist\n", dev->export_count); | |
1294 | return -EINVAL; | |
1295 | } | |
1296 | ||
1297 | BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1); | |
1298 | strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor)); | |
1299 | ||
1300 | pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:" | |
1301 | " %s\n", dev->t10_wwn.vendor); | |
1302 | ||
1303 | return count; | |
1304 | } | |
1305 | ||
0322913c AA |
1306 | static ssize_t target_wwn_product_id_show(struct config_item *item, |
1307 | char *page) | |
1308 | { | |
1309 | return sprintf(page, "%s\n", &to_t10_wwn(item)->model[0]); | |
1310 | } | |
1311 | ||
1312 | static ssize_t target_wwn_product_id_store(struct config_item *item, | |
1313 | const char *page, size_t count) | |
1314 | { | |
1315 | struct t10_wwn *t10_wwn = to_t10_wwn(item); | |
1316 | struct se_device *dev = t10_wwn->t10_dev; | |
1317 | /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ | |
1318 | unsigned char buf[INQUIRY_MODEL_LEN + 2]; | |
1319 | char *stripped = NULL; | |
ee26724a CIK |
1320 | size_t len; |
1321 | ssize_t ret; | |
0322913c AA |
1322 | |
1323 | len = strlcpy(buf, page, sizeof(buf)); | |
1324 | if (len < sizeof(buf)) { | |
1325 | /* Strip any newline added from userspace. */ | |
1326 | stripped = strstrip(buf); | |
1327 | len = strlen(stripped); | |
1328 | } | |
1329 | if (len > INQUIRY_MODEL_LEN) { | |
1330 | pr_err("Emulated T10 Vendor exceeds INQUIRY_MODEL_LEN: " | |
1331 | __stringify(INQUIRY_MODEL_LEN) | |
1332 | "\n"); | |
1333 | return -EOVERFLOW; | |
1334 | } | |
1335 | ||
1336 | ret = target_check_inquiry_data(stripped); | |
1337 | ||
1338 | if (ret < 0) | |
1339 | return ret; | |
1340 | ||
1341 | /* | |
1342 | * Check to see if any active exports exist. If they do exist, fail | |
1343 | * here as changing this information on the fly (underneath the | |
1344 | * initiator side OS dependent multipath code) could cause negative | |
1345 | * effects. | |
1346 | */ | |
1347 | if (dev->export_count) { | |
1348 | pr_err("Unable to set T10 Model while active %d exports exist\n", | |
1349 | dev->export_count); | |
1350 | return -EINVAL; | |
1351 | } | |
1352 | ||
1353 | BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); | |
1354 | strlcpy(dev->t10_wwn.model, stripped, sizeof(dev->t10_wwn.model)); | |
1355 | ||
1356 | pr_debug("Target_Core_ConfigFS: Set emulated T10 Model Identification: %s\n", | |
1357 | dev->t10_wwn.model); | |
1358 | ||
1359 | return count; | |
1360 | } | |
1361 | ||
1362 | static ssize_t target_wwn_revision_show(struct config_item *item, | |
1363 | char *page) | |
1364 | { | |
1365 | return sprintf(page, "%s\n", &to_t10_wwn(item)->revision[0]); | |
1366 | } | |
1367 | ||
1368 | static ssize_t target_wwn_revision_store(struct config_item *item, | |
1369 | const char *page, size_t count) | |
1370 | { | |
1371 | struct t10_wwn *t10_wwn = to_t10_wwn(item); | |
1372 | struct se_device *dev = t10_wwn->t10_dev; | |
1373 | /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ | |
1374 | unsigned char buf[INQUIRY_REVISION_LEN + 2]; | |
1375 | char *stripped = NULL; | |
ee26724a CIK |
1376 | size_t len; |
1377 | ssize_t ret; | |
0322913c AA |
1378 | |
1379 | len = strlcpy(buf, page, sizeof(buf)); | |
1380 | if (len < sizeof(buf)) { | |
1381 | /* Strip any newline added from userspace. */ | |
1382 | stripped = strstrip(buf); | |
1383 | len = strlen(stripped); | |
1384 | } | |
1385 | if (len > INQUIRY_REVISION_LEN) { | |
1386 | pr_err("Emulated T10 Revision exceeds INQUIRY_REVISION_LEN: " | |
1387 | __stringify(INQUIRY_REVISION_LEN) | |
1388 | "\n"); | |
1389 | return -EOVERFLOW; | |
1390 | } | |
1391 | ||
1392 | ret = target_check_inquiry_data(stripped); | |
1393 | ||
1394 | if (ret < 0) | |
1395 | return ret; | |
1396 | ||
1397 | /* | |
1398 | * Check to see if any active exports exist. If they do exist, fail | |
1399 | * here as changing this information on the fly (underneath the | |
1400 | * initiator side OS dependent multipath code) could cause negative | |
1401 | * effects. | |
1402 | */ | |
1403 | if (dev->export_count) { | |
1404 | pr_err("Unable to set T10 Revision while active %d exports exist\n", | |
1405 | dev->export_count); | |
1406 | return -EINVAL; | |
1407 | } | |
1408 | ||
1409 | BUILD_BUG_ON(sizeof(dev->t10_wwn.revision) != INQUIRY_REVISION_LEN + 1); | |
1410 | strlcpy(dev->t10_wwn.revision, stripped, sizeof(dev->t10_wwn.revision)); | |
1411 | ||
1412 | pr_debug("Target_Core_ConfigFS: Set emulated T10 Revision: %s\n", | |
1413 | dev->t10_wwn.revision); | |
1414 | ||
1415 | return count; | |
1416 | } | |
1417 | ||
c66ac9db NB |
1418 | /* |
1419 | * VPD page 0x80 Unit serial | |
1420 | */ | |
2eafd729 CH |
1421 | static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, |
1422 | char *page) | |
c66ac9db | 1423 | { |
c66ac9db | 1424 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
2eafd729 | 1425 | &to_t10_wwn(item)->unit_serial[0]); |
c66ac9db NB |
1426 | } |
1427 | ||
2eafd729 CH |
1428 | static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, |
1429 | const char *page, size_t count) | |
c66ac9db | 1430 | { |
2eafd729 | 1431 | struct t10_wwn *t10_wwn = to_t10_wwn(item); |
0fd97ccf | 1432 | struct se_device *dev = t10_wwn->t10_dev; |
c66ac9db NB |
1433 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
1434 | ||
1435 | /* | |
1436 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial | |
1437 | * from the struct scsi_device level firmware, do not allow | |
1438 | * VPD Unit Serial to be emulated. | |
1439 | * | |
1440 | * Note this struct scsi_device could also be emulating VPD | |
1441 | * information from its drivers/scsi LLD. But for now we assume | |
1442 | * it is doing 'the right thing' wrt a world wide unique | |
1443 | * VPD Unit Serial Number that OS dependent multipath can depend on. | |
1444 | */ | |
0fd97ccf | 1445 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
6708bb27 | 1446 | pr_err("Underlying SCSI device firmware provided VPD" |
c66ac9db NB |
1447 | " Unit Serial, ignoring request\n"); |
1448 | return -EOPNOTSUPP; | |
1449 | } | |
1450 | ||
60d645a4 | 1451 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
6708bb27 | 1452 | pr_err("Emulated VPD Unit Serial exceeds" |
c66ac9db NB |
1453 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
1454 | return -EOVERFLOW; | |
1455 | } | |
1456 | /* | |
1457 | * Check to see if any active $FABRIC_MOD exports exist. If they | |
1458 | * do exist, fail here as changing this information on the fly | |
1459 | * (underneath the initiator side OS dependent multipath code) | |
1460 | * could cause negative effects. | |
1461 | */ | |
0fd97ccf CH |
1462 | if (dev->export_count) { |
1463 | pr_err("Unable to set VPD Unit Serial while" | |
1464 | " active %d $FABRIC_MOD exports exist\n", | |
1465 | dev->export_count); | |
1466 | return -EINVAL; | |
c66ac9db | 1467 | } |
0fd97ccf | 1468 | |
c66ac9db NB |
1469 | /* |
1470 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. | |
1471 | * | |
1472 | * Also, strip any newline added from the userspace | |
1473 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial | |
1474 | */ | |
1475 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); | |
1476 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); | |
0fd97ccf | 1477 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
c66ac9db | 1478 | "%s", strstrip(buf)); |
0fd97ccf | 1479 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
c66ac9db | 1480 | |
6708bb27 | 1481 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
0fd97ccf | 1482 | " %s\n", dev->t10_wwn.unit_serial); |
c66ac9db NB |
1483 | |
1484 | return count; | |
1485 | } | |
1486 | ||
c66ac9db NB |
1487 | /* |
1488 | * VPD page 0x83 Protocol Identifier | |
1489 | */ | |
2eafd729 CH |
1490 | static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, |
1491 | char *page) | |
c66ac9db | 1492 | { |
2eafd729 | 1493 | struct t10_wwn *t10_wwn = to_t10_wwn(item); |
c66ac9db NB |
1494 | struct t10_vpd *vpd; |
1495 | unsigned char buf[VPD_TMP_BUF_SIZE]; | |
1496 | ssize_t len = 0; | |
1497 | ||
c66ac9db NB |
1498 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
1499 | ||
1500 | spin_lock(&t10_wwn->t10_vpd_lock); | |
1501 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { | |
6708bb27 | 1502 | if (!vpd->protocol_identifier_set) |
c66ac9db NB |
1503 | continue; |
1504 | ||
1505 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); | |
1506 | ||
6708bb27 | 1507 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1508 | break; |
1509 | ||
1510 | len += sprintf(page+len, "%s", buf); | |
1511 | } | |
1512 | spin_unlock(&t10_wwn->t10_vpd_lock); | |
1513 | ||
1514 | return len; | |
1515 | } | |
1516 | ||
c66ac9db NB |
1517 | /* |
1518 | * Generic wrapper for dumping VPD identifiers by association. | |
1519 | */ | |
1520 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ | |
2eafd729 CH |
1521 | static ssize_t target_wwn_##_name##_show(struct config_item *item, \ |
1522 | char *page) \ | |
c66ac9db | 1523 | { \ |
2eafd729 CH |
1524 | struct t10_wwn *t10_wwn = to_t10_wwn(item); \ |
1525 | struct t10_vpd *vpd; \ | |
c66ac9db NB |
1526 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ |
1527 | ssize_t len = 0; \ | |
1528 | \ | |
c66ac9db NB |
1529 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
1530 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ | |
1531 | if (vpd->association != _assoc) \ | |
1532 | continue; \ | |
1533 | \ | |
1534 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1535 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1536 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1537 | break; \ |
1538 | len += sprintf(page+len, "%s", buf); \ | |
1539 | \ | |
1540 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1541 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1542 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1543 | break; \ |
1544 | len += sprintf(page+len, "%s", buf); \ | |
1545 | \ | |
1546 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ | |
1547 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ | |
6708bb27 | 1548 | if (len + strlen(buf) >= PAGE_SIZE) \ |
c66ac9db NB |
1549 | break; \ |
1550 | len += sprintf(page+len, "%s", buf); \ | |
1551 | } \ | |
1552 | spin_unlock(&t10_wwn->t10_vpd_lock); \ | |
1553 | \ | |
1554 | return len; \ | |
1555 | } | |
1556 | ||
2eafd729 | 1557 | /* VPD page 0x83 Association: Logical Unit */ |
c66ac9db | 1558 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); |
2eafd729 | 1559 | /* VPD page 0x83 Association: Target Port */ |
c66ac9db | 1560 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); |
2eafd729 | 1561 | /* VPD page 0x83 Association: SCSI Target Device */ |
c66ac9db NB |
1562 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); |
1563 | ||
54a6f3f6 | 1564 | CONFIGFS_ATTR(target_wwn_, vendor_id); |
0322913c AA |
1565 | CONFIGFS_ATTR(target_wwn_, product_id); |
1566 | CONFIGFS_ATTR(target_wwn_, revision); | |
2eafd729 CH |
1567 | CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); |
1568 | CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); | |
1569 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); | |
1570 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); | |
1571 | CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); | |
c66ac9db NB |
1572 | |
1573 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { | |
54a6f3f6 | 1574 | &target_wwn_attr_vendor_id, |
0322913c AA |
1575 | &target_wwn_attr_product_id, |
1576 | &target_wwn_attr_revision, | |
2eafd729 CH |
1577 | &target_wwn_attr_vpd_unit_serial, |
1578 | &target_wwn_attr_vpd_protocol_identifier, | |
1579 | &target_wwn_attr_vpd_assoc_logical_unit, | |
1580 | &target_wwn_attr_vpd_assoc_target_port, | |
1581 | &target_wwn_attr_vpd_assoc_scsi_target_device, | |
c66ac9db NB |
1582 | NULL, |
1583 | }; | |
1584 | ||
2eafd729 | 1585 | TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); |
c66ac9db | 1586 | |
f8d389c6 | 1587 | /* End functions for struct config_item_type tb_dev_wwn_cit */ |
c66ac9db | 1588 | |
91e2e39b | 1589 | /* Start functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 1590 | |
2eafd729 CH |
1591 | static struct se_device *pr_to_dev(struct config_item *item) |
1592 | { | |
1593 | return container_of(to_config_group(item), struct se_device, | |
1594 | dev_pr_group); | |
1595 | } | |
c66ac9db | 1596 | |
d977f437 CH |
1597 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
1598 | char *page) | |
c66ac9db NB |
1599 | { |
1600 | struct se_node_acl *se_nacl; | |
1601 | struct t10_pr_registration *pr_reg; | |
1602 | char i_buf[PR_REG_ISID_ID_LEN]; | |
c66ac9db NB |
1603 | |
1604 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1605 | ||
c66ac9db | 1606 | pr_reg = dev->dev_pr_res_holder; |
d977f437 CH |
1607 | if (!pr_reg) |
1608 | return sprintf(page, "No SPC-3 Reservation holder\n"); | |
1609 | ||
c66ac9db | 1610 | se_nacl = pr_reg->pr_reg_nacl; |
d2843c17 | 1611 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
c66ac9db | 1612 | |
d977f437 | 1613 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
30c7ca93 | 1614 | se_nacl->se_tpg->se_tpg_tfo->fabric_name, |
d2843c17 | 1615 | se_nacl->initiatorname, i_buf); |
c66ac9db NB |
1616 | } |
1617 | ||
d977f437 CH |
1618 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
1619 | char *page) | |
c66ac9db | 1620 | { |
fae43461 | 1621 | struct se_session *sess = dev->reservation_holder; |
c66ac9db | 1622 | struct se_node_acl *se_nacl; |
d977f437 | 1623 | ssize_t len; |
c66ac9db | 1624 | |
fae43461 BVA |
1625 | if (sess) { |
1626 | se_nacl = sess->se_node_acl; | |
d977f437 CH |
1627 | len = sprintf(page, |
1628 | "SPC-2 Reservation: %s Initiator: %s\n", | |
30c7ca93 | 1629 | se_nacl->se_tpg->se_tpg_tfo->fabric_name, |
d977f437 CH |
1630 | se_nacl->initiatorname); |
1631 | } else { | |
1632 | len = sprintf(page, "No SPC-2 Reservation holder\n"); | |
c66ac9db | 1633 | } |
d977f437 | 1634 | return len; |
c66ac9db NB |
1635 | } |
1636 | ||
2eafd729 | 1637 | static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) |
c66ac9db | 1638 | { |
2eafd729 | 1639 | struct se_device *dev = pr_to_dev(item); |
d977f437 | 1640 | int ret; |
c66ac9db | 1641 | |
b49d6f78 DD |
1642 | if (!dev->dev_attrib.emulate_pr) |
1643 | return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); | |
1644 | ||
4ec5bf0e | 1645 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
d977f437 | 1646 | return sprintf(page, "Passthrough\n"); |
c66ac9db | 1647 | |
d977f437 CH |
1648 | spin_lock(&dev->dev_reservation_lock); |
1649 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) | |
1650 | ret = target_core_dev_pr_show_spc2_res(dev, page); | |
1651 | else | |
1652 | ret = target_core_dev_pr_show_spc3_res(dev, page); | |
1653 | spin_unlock(&dev->dev_reservation_lock); | |
1654 | return ret; | |
c66ac9db NB |
1655 | } |
1656 | ||
2eafd729 CH |
1657 | static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, |
1658 | char *page) | |
c66ac9db | 1659 | { |
2eafd729 | 1660 | struct se_device *dev = pr_to_dev(item); |
c66ac9db NB |
1661 | ssize_t len = 0; |
1662 | ||
c66ac9db | 1663 | spin_lock(&dev->dev_reservation_lock); |
d977f437 | 1664 | if (!dev->dev_pr_res_holder) { |
c66ac9db | 1665 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1666 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
c66ac9db NB |
1667 | len = sprintf(page, "SPC-3 Reservation: All Target" |
1668 | " Ports registration\n"); | |
d977f437 | 1669 | } else { |
c66ac9db NB |
1670 | len = sprintf(page, "SPC-3 Reservation: Single" |
1671 | " Target Port registration\n"); | |
d977f437 | 1672 | } |
c66ac9db | 1673 | |
d977f437 | 1674 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1675 | return len; |
1676 | } | |
1677 | ||
2eafd729 CH |
1678 | static ssize_t target_pr_res_pr_generation_show(struct config_item *item, |
1679 | char *page) | |
c66ac9db | 1680 | { |
2eafd729 | 1681 | return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); |
c66ac9db NB |
1682 | } |
1683 | ||
c66ac9db | 1684 | |
2eafd729 CH |
1685 | static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, |
1686 | char *page) | |
c66ac9db | 1687 | { |
2eafd729 | 1688 | struct se_device *dev = pr_to_dev(item); |
c66ac9db | 1689 | struct se_node_acl *se_nacl; |
c66ac9db NB |
1690 | struct se_portal_group *se_tpg; |
1691 | struct t10_pr_registration *pr_reg; | |
9ac8928e | 1692 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1693 | ssize_t len = 0; |
1694 | ||
c66ac9db NB |
1695 | spin_lock(&dev->dev_reservation_lock); |
1696 | pr_reg = dev->dev_pr_res_holder; | |
6708bb27 | 1697 | if (!pr_reg) { |
c66ac9db | 1698 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
d977f437 | 1699 | goto out_unlock; |
c66ac9db | 1700 | } |
d977f437 | 1701 | |
c66ac9db NB |
1702 | se_nacl = pr_reg->pr_reg_nacl; |
1703 | se_tpg = se_nacl->se_tpg; | |
e3d6f909 | 1704 | tfo = se_tpg->se_tpg_tfo; |
c66ac9db NB |
1705 | |
1706 | len += sprintf(page+len, "SPC-3 Reservation: %s" | |
30c7ca93 | 1707 | " Target Node Endpoint: %s\n", tfo->fabric_name, |
c66ac9db NB |
1708 | tfo->tpg_get_wwn(se_tpg)); |
1709 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" | |
35d1efe8 | 1710 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
f2d30680 | 1711 | " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, |
30c7ca93 DD |
1712 | tfo->fabric_name, tfo->tpg_get_tag(se_tpg), |
1713 | tfo->fabric_name, pr_reg->pr_aptpl_target_lun); | |
c66ac9db | 1714 | |
d977f437 CH |
1715 | out_unlock: |
1716 | spin_unlock(&dev->dev_reservation_lock); | |
c66ac9db NB |
1717 | return len; |
1718 | } | |
1719 | ||
c66ac9db | 1720 | |
2eafd729 CH |
1721 | static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, |
1722 | char *page) | |
c66ac9db | 1723 | { |
2eafd729 | 1724 | struct se_device *dev = pr_to_dev(item); |
9ac8928e | 1725 | const struct target_core_fabric_ops *tfo; |
c66ac9db NB |
1726 | struct t10_pr_registration *pr_reg; |
1727 | unsigned char buf[384]; | |
1728 | char i_buf[PR_REG_ISID_ID_LEN]; | |
1729 | ssize_t len = 0; | |
d2843c17 | 1730 | int reg_count = 0; |
c66ac9db | 1731 | |
c66ac9db NB |
1732 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
1733 | ||
0fd97ccf CH |
1734 | spin_lock(&dev->t10_pr.registration_lock); |
1735 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, | |
c66ac9db NB |
1736 | pr_reg_list) { |
1737 | ||
1738 | memset(buf, 0, 384); | |
1739 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); | |
1740 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; | |
d2843c17 | 1741 | core_pr_dump_initiator_port(pr_reg, i_buf, |
c66ac9db NB |
1742 | PR_REG_ISID_ID_LEN); |
1743 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", | |
30c7ca93 | 1744 | tfo->fabric_name, |
d2843c17 | 1745 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
c66ac9db NB |
1746 | pr_reg->pr_res_generation); |
1747 | ||
6708bb27 | 1748 | if (len + strlen(buf) >= PAGE_SIZE) |
c66ac9db NB |
1749 | break; |
1750 | ||
1751 | len += sprintf(page+len, "%s", buf); | |
1752 | reg_count++; | |
1753 | } | |
0fd97ccf | 1754 | spin_unlock(&dev->t10_pr.registration_lock); |
c66ac9db | 1755 | |
6708bb27 | 1756 | if (!reg_count) |
c66ac9db NB |
1757 | len += sprintf(page+len, "None\n"); |
1758 | ||
1759 | return len; | |
1760 | } | |
1761 | ||
2eafd729 | 1762 | static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) |
c66ac9db | 1763 | { |
2eafd729 | 1764 | struct se_device *dev = pr_to_dev(item); |
c66ac9db NB |
1765 | struct t10_pr_registration *pr_reg; |
1766 | ssize_t len = 0; | |
1767 | ||
c66ac9db NB |
1768 | spin_lock(&dev->dev_reservation_lock); |
1769 | pr_reg = dev->dev_pr_res_holder; | |
d977f437 CH |
1770 | if (pr_reg) { |
1771 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", | |
1772 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); | |
1773 | } else { | |
c66ac9db | 1774 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
c66ac9db | 1775 | } |
c66ac9db | 1776 | |
d977f437 | 1777 | spin_unlock(&dev->dev_reservation_lock); |
c66ac9db NB |
1778 | return len; |
1779 | } | |
1780 | ||
2eafd729 | 1781 | static ssize_t target_pr_res_type_show(struct config_item *item, char *page) |
c66ac9db | 1782 | { |
2eafd729 CH |
1783 | struct se_device *dev = pr_to_dev(item); |
1784 | ||
b49d6f78 DD |
1785 | if (!dev->dev_attrib.emulate_pr) |
1786 | return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); | |
4ec5bf0e | 1787 | if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) |
d977f437 | 1788 | return sprintf(page, "SPC_PASSTHROUGH\n"); |
b49d6f78 | 1789 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
d977f437 | 1790 | return sprintf(page, "SPC2_RESERVATIONS\n"); |
b49d6f78 DD |
1791 | |
1792 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); | |
c66ac9db NB |
1793 | } |
1794 | ||
2eafd729 CH |
1795 | static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, |
1796 | char *page) | |
c66ac9db | 1797 | { |
2eafd729 CH |
1798 | struct se_device *dev = pr_to_dev(item); |
1799 | ||
b49d6f78 DD |
1800 | if (!dev->dev_attrib.emulate_pr || |
1801 | (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) | |
c66ac9db NB |
1802 | return 0; |
1803 | ||
1804 | return sprintf(page, "APTPL Bit Status: %s\n", | |
0fd97ccf | 1805 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
c66ac9db NB |
1806 | } |
1807 | ||
2eafd729 CH |
1808 | static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, |
1809 | char *page) | |
c66ac9db | 1810 | { |
2eafd729 CH |
1811 | struct se_device *dev = pr_to_dev(item); |
1812 | ||
b49d6f78 DD |
1813 | if (!dev->dev_attrib.emulate_pr || |
1814 | (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) | |
c66ac9db NB |
1815 | return 0; |
1816 | ||
1817 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); | |
1818 | } | |
1819 | ||
1820 | enum { | |
1821 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, | |
1822 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, | |
1823 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, | |
1824 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err | |
1825 | }; | |
1826 | ||
1827 | static match_table_t tokens = { | |
1828 | {Opt_initiator_fabric, "initiator_fabric=%s"}, | |
1829 | {Opt_initiator_node, "initiator_node=%s"}, | |
1830 | {Opt_initiator_sid, "initiator_sid=%s"}, | |
1831 | {Opt_sa_res_key, "sa_res_key=%s"}, | |
1832 | {Opt_res_holder, "res_holder=%d"}, | |
1833 | {Opt_res_type, "res_type=%d"}, | |
1834 | {Opt_res_scope, "res_scope=%d"}, | |
1835 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, | |
a2db857b | 1836 | {Opt_mapped_lun, "mapped_lun=%u"}, |
c66ac9db NB |
1837 | {Opt_target_fabric, "target_fabric=%s"}, |
1838 | {Opt_target_node, "target_node=%s"}, | |
1839 | {Opt_tpgt, "tpgt=%d"}, | |
1840 | {Opt_port_rtpi, "port_rtpi=%d"}, | |
a2db857b | 1841 | {Opt_target_lun, "target_lun=%u"}, |
c66ac9db NB |
1842 | {Opt_err, NULL} |
1843 | }; | |
1844 | ||
2eafd729 CH |
1845 | static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, |
1846 | const char *page, size_t count) | |
c66ac9db | 1847 | { |
2eafd729 | 1848 | struct se_device *dev = pr_to_dev(item); |
6d180253 JJ |
1849 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
1850 | unsigned char *t_fabric = NULL, *t_port = NULL; | |
8d213559 | 1851 | char *orig, *ptr, *opts; |
c66ac9db NB |
1852 | substring_t args[MAX_OPT_ARGS]; |
1853 | unsigned long long tmp_ll; | |
1854 | u64 sa_res_key = 0; | |
f2d30680 | 1855 | u64 mapped_lun = 0, target_lun = 0; |
c66ac9db | 1856 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; |
45fb94c2 BVA |
1857 | u16 tpgt = 0; |
1858 | u8 type = 0; | |
c66ac9db | 1859 | |
b49d6f78 DD |
1860 | if (!dev->dev_attrib.emulate_pr || |
1861 | (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) | |
9105bfc0 | 1862 | return count; |
d977f437 | 1863 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
9105bfc0 | 1864 | return count; |
c66ac9db | 1865 | |
0fd97ccf | 1866 | if (dev->export_count) { |
6708bb27 | 1867 | pr_debug("Unable to process APTPL metadata while" |
c66ac9db NB |
1868 | " active fabric exports exist\n"); |
1869 | return -EINVAL; | |
1870 | } | |
1871 | ||
1872 | opts = kstrdup(page, GFP_KERNEL); | |
1873 | if (!opts) | |
1874 | return -ENOMEM; | |
1875 | ||
1876 | orig = opts; | |
90c161b6 | 1877 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
c66ac9db NB |
1878 | if (!*ptr) |
1879 | continue; | |
1880 | ||
1881 | token = match_token(ptr, tokens, args); | |
1882 | switch (token) { | |
1883 | case Opt_initiator_fabric: | |
8d213559 | 1884 | i_fabric = match_strdup(args); |
6d180253 JJ |
1885 | if (!i_fabric) { |
1886 | ret = -ENOMEM; | |
1887 | goto out; | |
1888 | } | |
c66ac9db NB |
1889 | break; |
1890 | case Opt_initiator_node: | |
8d213559 | 1891 | i_port = match_strdup(args); |
6d180253 JJ |
1892 | if (!i_port) { |
1893 | ret = -ENOMEM; | |
1894 | goto out; | |
1895 | } | |
60d645a4 | 1896 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
6708bb27 | 1897 | pr_err("APTPL metadata initiator_node=" |
c66ac9db NB |
1898 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
1899 | PR_APTPL_MAX_IPORT_LEN); | |
1900 | ret = -EINVAL; | |
1901 | break; | |
1902 | } | |
1903 | break; | |
1904 | case Opt_initiator_sid: | |
8d213559 | 1905 | isid = match_strdup(args); |
6d180253 JJ |
1906 | if (!isid) { |
1907 | ret = -ENOMEM; | |
1908 | goto out; | |
1909 | } | |
60d645a4 | 1910 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
6708bb27 | 1911 | pr_err("APTPL metadata initiator_isid" |
c66ac9db NB |
1912 | "= exceeds PR_REG_ISID_LEN: %d\n", |
1913 | PR_REG_ISID_LEN); | |
1914 | ret = -EINVAL; | |
1915 | break; | |
1916 | } | |
1917 | break; | |
1918 | case Opt_sa_res_key: | |
a2db857b | 1919 | ret = match_u64(args, &tmp_ll); |
c66ac9db | 1920 | if (ret < 0) { |
8d213559 | 1921 | pr_err("kstrtoull() failed for sa_res_key=\n"); |
c66ac9db NB |
1922 | goto out; |
1923 | } | |
1924 | sa_res_key = (u64)tmp_ll; | |
1925 | break; | |
1926 | /* | |
1927 | * PR APTPL Metadata for Reservation | |
1928 | */ | |
1929 | case Opt_res_holder: | |
c2091026 DD |
1930 | ret = match_int(args, &arg); |
1931 | if (ret) | |
1932 | goto out; | |
c66ac9db NB |
1933 | res_holder = arg; |
1934 | break; | |
1935 | case Opt_res_type: | |
c2091026 DD |
1936 | ret = match_int(args, &arg); |
1937 | if (ret) | |
1938 | goto out; | |
c66ac9db NB |
1939 | type = (u8)arg; |
1940 | break; | |
1941 | case Opt_res_scope: | |
c2091026 DD |
1942 | ret = match_int(args, &arg); |
1943 | if (ret) | |
1944 | goto out; | |
c66ac9db NB |
1945 | break; |
1946 | case Opt_res_all_tg_pt: | |
c2091026 DD |
1947 | ret = match_int(args, &arg); |
1948 | if (ret) | |
1949 | goto out; | |
c66ac9db NB |
1950 | all_tg_pt = (int)arg; |
1951 | break; | |
1952 | case Opt_mapped_lun: | |
a2db857b | 1953 | ret = match_u64(args, &tmp_ll); |
c2091026 DD |
1954 | if (ret) |
1955 | goto out; | |
a2db857b | 1956 | mapped_lun = (u64)tmp_ll; |
c66ac9db NB |
1957 | break; |
1958 | /* | |
1959 | * PR APTPL Metadata for Target Port | |
1960 | */ | |
1961 | case Opt_target_fabric: | |
8d213559 | 1962 | t_fabric = match_strdup(args); |
6d180253 JJ |
1963 | if (!t_fabric) { |
1964 | ret = -ENOMEM; | |
1965 | goto out; | |
1966 | } | |
c66ac9db NB |
1967 | break; |
1968 | case Opt_target_node: | |
8d213559 | 1969 | t_port = match_strdup(args); |
6d180253 JJ |
1970 | if (!t_port) { |
1971 | ret = -ENOMEM; | |
1972 | goto out; | |
1973 | } | |
60d645a4 | 1974 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
6708bb27 | 1975 | pr_err("APTPL metadata target_node=" |
c66ac9db NB |
1976 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
1977 | PR_APTPL_MAX_TPORT_LEN); | |
1978 | ret = -EINVAL; | |
1979 | break; | |
1980 | } | |
1981 | break; | |
1982 | case Opt_tpgt: | |
c2091026 DD |
1983 | ret = match_int(args, &arg); |
1984 | if (ret) | |
1985 | goto out; | |
c66ac9db NB |
1986 | tpgt = (u16)arg; |
1987 | break; | |
1988 | case Opt_port_rtpi: | |
c2091026 DD |
1989 | ret = match_int(args, &arg); |
1990 | if (ret) | |
1991 | goto out; | |
c66ac9db NB |
1992 | break; |
1993 | case Opt_target_lun: | |
a2db857b | 1994 | ret = match_u64(args, &tmp_ll); |
c2091026 DD |
1995 | if (ret) |
1996 | goto out; | |
a2db857b | 1997 | target_lun = (u64)tmp_ll; |
c66ac9db NB |
1998 | break; |
1999 | default: | |
2000 | break; | |
2001 | } | |
2002 | } | |
2003 | ||
6708bb27 AG |
2004 | if (!i_port || !t_port || !sa_res_key) { |
2005 | pr_err("Illegal parameters for APTPL registration\n"); | |
c66ac9db NB |
2006 | ret = -EINVAL; |
2007 | goto out; | |
2008 | } | |
2009 | ||
2010 | if (res_holder && !(type)) { | |
6708bb27 | 2011 | pr_err("Illegal PR type: 0x%02x for reservation" |
c66ac9db NB |
2012 | " holder\n", type); |
2013 | ret = -EINVAL; | |
2014 | goto out; | |
2015 | } | |
2016 | ||
0fd97ccf | 2017 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
c66ac9db NB |
2018 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
2019 | res_holder, all_tg_pt, type); | |
2020 | out: | |
6d180253 JJ |
2021 | kfree(i_fabric); |
2022 | kfree(i_port); | |
2023 | kfree(isid); | |
2024 | kfree(t_fabric); | |
2025 | kfree(t_port); | |
c66ac9db NB |
2026 | kfree(orig); |
2027 | return (ret == 0) ? count : ret; | |
2028 | } | |
2029 | ||
c66ac9db | 2030 | |
2eafd729 CH |
2031 | CONFIGFS_ATTR_RO(target_pr_, res_holder); |
2032 | CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); | |
2033 | CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); | |
2034 | CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); | |
2035 | CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); | |
2036 | CONFIGFS_ATTR_RO(target_pr_, res_pr_type); | |
2037 | CONFIGFS_ATTR_RO(target_pr_, res_type); | |
2038 | CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); | |
2039 | CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); | |
c66ac9db NB |
2040 | |
2041 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { | |
2eafd729 CH |
2042 | &target_pr_attr_res_holder, |
2043 | &target_pr_attr_res_pr_all_tgt_pts, | |
2044 | &target_pr_attr_res_pr_generation, | |
2045 | &target_pr_attr_res_pr_holder_tg_port, | |
2046 | &target_pr_attr_res_pr_registered_i_pts, | |
2047 | &target_pr_attr_res_pr_type, | |
2048 | &target_pr_attr_res_type, | |
2049 | &target_pr_attr_res_aptpl_active, | |
2050 | &target_pr_attr_res_aptpl_metadata, | |
c66ac9db NB |
2051 | NULL, |
2052 | }; | |
2053 | ||
2eafd729 | 2054 | TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); |
c66ac9db | 2055 | |
91e2e39b | 2056 | /* End functions for struct config_item_type tb_dev_pr_cit */ |
c66ac9db | 2057 | |
73112edc | 2058 | /* Start functions for struct config_item_type tb_dev_cit */ |
c66ac9db | 2059 | |
2eafd729 CH |
2060 | static inline struct se_device *to_device(struct config_item *item) |
2061 | { | |
2062 | return container_of(to_config_group(item), struct se_device, dev_group); | |
2063 | } | |
2064 | ||
2065 | static ssize_t target_dev_info_show(struct config_item *item, char *page) | |
c66ac9db | 2066 | { |
2eafd729 | 2067 | struct se_device *dev = to_device(item); |
c66ac9db NB |
2068 | int bl = 0; |
2069 | ssize_t read_bytes = 0; | |
2070 | ||
0fd97ccf | 2071 | transport_dump_dev_state(dev, page, &bl); |
c66ac9db | 2072 | read_bytes += bl; |
0a06d430 CH |
2073 | read_bytes += dev->transport->show_configfs_dev_params(dev, |
2074 | page+read_bytes); | |
c66ac9db NB |
2075 | return read_bytes; |
2076 | } | |
2077 | ||
2eafd729 CH |
2078 | static ssize_t target_dev_control_store(struct config_item *item, |
2079 | const char *page, size_t count) | |
c66ac9db | 2080 | { |
2eafd729 | 2081 | struct se_device *dev = to_device(item); |
c66ac9db | 2082 | |
0a06d430 | 2083 | return dev->transport->set_configfs_dev_params(dev, page, count); |
c66ac9db NB |
2084 | } |
2085 | ||
2eafd729 | 2086 | static ssize_t target_dev_alias_show(struct config_item *item, char *page) |
c66ac9db | 2087 | { |
2eafd729 | 2088 | struct se_device *dev = to_device(item); |
c66ac9db | 2089 | |
0fd97ccf | 2090 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
c66ac9db NB |
2091 | return 0; |
2092 | ||
0fd97ccf | 2093 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
c66ac9db NB |
2094 | } |
2095 | ||
2eafd729 CH |
2096 | static ssize_t target_dev_alias_store(struct config_item *item, |
2097 | const char *page, size_t count) | |
c66ac9db | 2098 | { |
2eafd729 | 2099 | struct se_device *dev = to_device(item); |
0fd97ccf | 2100 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
2101 | ssize_t read_bytes; |
2102 | ||
2103 | if (count > (SE_DEV_ALIAS_LEN-1)) { | |
6708bb27 | 2104 | pr_err("alias count: %d exceeds" |
c66ac9db NB |
2105 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
2106 | SE_DEV_ALIAS_LEN-1); | |
2107 | return -EINVAL; | |
2108 | } | |
2109 | ||
0fd97ccf | 2110 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
3011684c DC |
2111 | if (!read_bytes) |
2112 | return -EINVAL; | |
0fd97ccf CH |
2113 | if (dev->dev_alias[read_bytes - 1] == '\n') |
2114 | dev->dev_alias[read_bytes - 1] = '\0'; | |
0877eafd | 2115 | |
0fd97ccf | 2116 | dev->dev_flags |= DF_USING_ALIAS; |
3011684c | 2117 | |
6708bb27 | 2118 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
c66ac9db | 2119 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
2120 | config_item_name(&dev->dev_group.cg_item), |
2121 | dev->dev_alias); | |
c66ac9db NB |
2122 | |
2123 | return read_bytes; | |
2124 | } | |
2125 | ||
2eafd729 | 2126 | static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) |
c66ac9db | 2127 | { |
2eafd729 | 2128 | struct se_device *dev = to_device(item); |
c66ac9db | 2129 | |
0fd97ccf | 2130 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
c66ac9db NB |
2131 | return 0; |
2132 | ||
0fd97ccf | 2133 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
c66ac9db NB |
2134 | } |
2135 | ||
2eafd729 CH |
2136 | static ssize_t target_dev_udev_path_store(struct config_item *item, |
2137 | const char *page, size_t count) | |
c66ac9db | 2138 | { |
2eafd729 | 2139 | struct se_device *dev = to_device(item); |
0fd97ccf | 2140 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
2141 | ssize_t read_bytes; |
2142 | ||
2143 | if (count > (SE_UDEV_PATH_LEN-1)) { | |
6708bb27 | 2144 | pr_err("udev_path count: %d exceeds" |
c66ac9db NB |
2145 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
2146 | SE_UDEV_PATH_LEN-1); | |
2147 | return -EINVAL; | |
2148 | } | |
2149 | ||
0fd97ccf | 2150 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
c66ac9db | 2151 | "%s", page); |
3011684c DC |
2152 | if (!read_bytes) |
2153 | return -EINVAL; | |
0fd97ccf CH |
2154 | if (dev->udev_path[read_bytes - 1] == '\n') |
2155 | dev->udev_path[read_bytes - 1] = '\0'; | |
0877eafd | 2156 | |
0fd97ccf | 2157 | dev->dev_flags |= DF_USING_UDEV_PATH; |
3011684c | 2158 | |
6708bb27 | 2159 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
c66ac9db | 2160 | config_item_name(&hba->hba_group.cg_item), |
0fd97ccf CH |
2161 | config_item_name(&dev->dev_group.cg_item), |
2162 | dev->udev_path); | |
c66ac9db NB |
2163 | |
2164 | return read_bytes; | |
2165 | } | |
2166 | ||
2eafd729 | 2167 | static ssize_t target_dev_enable_show(struct config_item *item, char *page) |
64146db7 | 2168 | { |
2eafd729 | 2169 | struct se_device *dev = to_device(item); |
64146db7 | 2170 | |
cb0f32e1 | 2171 | return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev)); |
64146db7 AG |
2172 | } |
2173 | ||
2eafd729 CH |
2174 | static ssize_t target_dev_enable_store(struct config_item *item, |
2175 | const char *page, size_t count) | |
c66ac9db | 2176 | { |
2eafd729 | 2177 | struct se_device *dev = to_device(item); |
c66ac9db | 2178 | char *ptr; |
0fd97ccf | 2179 | int ret; |
c66ac9db NB |
2180 | |
2181 | ptr = strstr(page, "1"); | |
6708bb27 AG |
2182 | if (!ptr) { |
2183 | pr_err("For dev_enable ops, only valid value" | |
c66ac9db NB |
2184 | " is \"1\"\n"); |
2185 | return -EINVAL; | |
2186 | } | |
c66ac9db | 2187 | |
0fd97ccf CH |
2188 | ret = target_configure_device(dev); |
2189 | if (ret) | |
2190 | return ret; | |
c66ac9db NB |
2191 | return count; |
2192 | } | |
2193 | ||
2eafd729 | 2194 | static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) |
c66ac9db | 2195 | { |
2eafd729 | 2196 | struct se_device *dev = to_device(item); |
c66ac9db NB |
2197 | struct config_item *lu_ci; |
2198 | struct t10_alua_lu_gp *lu_gp; | |
2199 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2200 | ssize_t len = 0; | |
2201 | ||
c66ac9db | 2202 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
c87fbd56 CH |
2203 | if (!lu_gp_mem) |
2204 | return 0; | |
c66ac9db NB |
2205 | |
2206 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
2207 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 2208 | if (lu_gp) { |
c66ac9db NB |
2209 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
2210 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", | |
2211 | config_item_name(lu_ci), lu_gp->lu_gp_id); | |
2212 | } | |
2213 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2214 | ||
2215 | return len; | |
2216 | } | |
2217 | ||
2eafd729 CH |
2218 | static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, |
2219 | const char *page, size_t count) | |
c66ac9db | 2220 | { |
2eafd729 | 2221 | struct se_device *dev = to_device(item); |
0fd97ccf | 2222 | struct se_hba *hba = dev->se_hba; |
c66ac9db NB |
2223 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
2224 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
2225 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2226 | int move = 0; | |
2227 | ||
c87fbd56 CH |
2228 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
2229 | if (!lu_gp_mem) | |
9105bfc0 | 2230 | return count; |
c87fbd56 | 2231 | |
c66ac9db | 2232 | if (count > LU_GROUP_NAME_BUF) { |
6708bb27 | 2233 | pr_err("ALUA LU Group Alias too large!\n"); |
c66ac9db NB |
2234 | return -EINVAL; |
2235 | } | |
2236 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2237 | memcpy(buf, page, count); | |
2238 | /* | |
2239 | * Any ALUA logical unit alias besides "NULL" means we will be | |
2240 | * making a new group association. | |
2241 | */ | |
2242 | if (strcmp(strstrip(buf), "NULL")) { | |
2243 | /* | |
2244 | * core_alua_get_lu_gp_by_name() will increment reference to | |
2245 | * struct t10_alua_lu_gp. This reference is released with | |
2246 | * core_alua_get_lu_gp_by_name below(). | |
2247 | */ | |
2248 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); | |
6708bb27 | 2249 | if (!lu_gp_new) |
c66ac9db NB |
2250 | return -ENODEV; |
2251 | } | |
c66ac9db NB |
2252 | |
2253 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
2254 | lu_gp = lu_gp_mem->lu_gp; | |
6708bb27 | 2255 | if (lu_gp) { |
c66ac9db NB |
2256 | /* |
2257 | * Clearing an existing lu_gp association, and replacing | |
2258 | * with NULL | |
2259 | */ | |
6708bb27 AG |
2260 | if (!lu_gp_new) { |
2261 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" | |
c66ac9db NB |
2262 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
2263 | " %hu\n", | |
2264 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2265 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
2266 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
2267 | lu_gp->lu_gp_id); | |
2268 | ||
2269 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
2270 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2271 | ||
2272 | return count; | |
2273 | } | |
2274 | /* | |
2275 | * Removing existing association of lu_gp_mem with lu_gp | |
2276 | */ | |
2277 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); | |
2278 | move = 1; | |
2279 | } | |
2280 | /* | |
2281 | * Associate lu_gp_mem with lu_gp_new. | |
2282 | */ | |
2283 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); | |
2284 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
2285 | ||
6708bb27 | 2286 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
c66ac9db NB |
2287 | " core/alua/lu_gps/%s, ID: %hu\n", |
2288 | (move) ? "Moving" : "Adding", | |
2289 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2290 | config_item_name(&dev->dev_group.cg_item), |
c66ac9db NB |
2291 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
2292 | lu_gp_new->lu_gp_id); | |
2293 | ||
2294 | core_alua_put_lu_gp_from_name(lu_gp_new); | |
2295 | return count; | |
2296 | } | |
2297 | ||
2eafd729 | 2298 | static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) |
229d4f11 | 2299 | { |
2eafd729 | 2300 | struct se_device *dev = to_device(item); |
229d4f11 HR |
2301 | struct t10_alua_lba_map *map; |
2302 | struct t10_alua_lba_map_member *mem; | |
2303 | char *b = page; | |
2304 | int bl = 0; | |
2305 | char state; | |
2306 | ||
2307 | spin_lock(&dev->t10_alua.lba_map_lock); | |
2308 | if (!list_empty(&dev->t10_alua.lba_map_list)) | |
2309 | bl += sprintf(b + bl, "%u %u\n", | |
2310 | dev->t10_alua.lba_map_segment_size, | |
2311 | dev->t10_alua.lba_map_segment_multiplier); | |
2312 | list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { | |
2313 | bl += sprintf(b + bl, "%llu %llu", | |
2314 | map->lba_map_first_lba, map->lba_map_last_lba); | |
2315 | list_for_each_entry(mem, &map->lba_map_mem_list, | |
2316 | lba_map_mem_list) { | |
2317 | switch (mem->lba_map_mem_alua_state) { | |
2318 | case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: | |
2319 | state = 'O'; | |
2320 | break; | |
2321 | case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: | |
2322 | state = 'A'; | |
2323 | break; | |
2324 | case ALUA_ACCESS_STATE_STANDBY: | |
2325 | state = 'S'; | |
2326 | break; | |
2327 | case ALUA_ACCESS_STATE_UNAVAILABLE: | |
2328 | state = 'U'; | |
2329 | break; | |
2330 | default: | |
2331 | state = '.'; | |
2332 | break; | |
2333 | } | |
2334 | bl += sprintf(b + bl, " %d:%c", | |
2335 | mem->lba_map_mem_alua_pg_id, state); | |
2336 | } | |
2337 | bl += sprintf(b + bl, "\n"); | |
2338 | } | |
2339 | spin_unlock(&dev->t10_alua.lba_map_lock); | |
2340 | return bl; | |
2341 | } | |
2342 | ||
2eafd729 CH |
2343 | static ssize_t target_dev_lba_map_store(struct config_item *item, |
2344 | const char *page, size_t count) | |
229d4f11 | 2345 | { |
2eafd729 | 2346 | struct se_device *dev = to_device(item); |
229d4f11 HR |
2347 | struct t10_alua_lba_map *lba_map = NULL; |
2348 | struct list_head lba_list; | |
f0a8afec | 2349 | char *map_entries, *orig, *ptr; |
229d4f11 HR |
2350 | char state; |
2351 | int pg_num = -1, pg; | |
2352 | int ret = 0, num = 0, pg_id, alua_state; | |
2353 | unsigned long start_lba = -1, end_lba = -1; | |
2354 | unsigned long segment_size = -1, segment_mult = -1; | |
2355 | ||
f0a8afec | 2356 | orig = map_entries = kstrdup(page, GFP_KERNEL); |
229d4f11 HR |
2357 | if (!map_entries) |
2358 | return -ENOMEM; | |
2359 | ||
2360 | INIT_LIST_HEAD(&lba_list); | |
2361 | while ((ptr = strsep(&map_entries, "\n")) != NULL) { | |
2362 | if (!*ptr) | |
2363 | continue; | |
2364 | ||
2365 | if (num == 0) { | |
2366 | if (sscanf(ptr, "%lu %lu\n", | |
2367 | &segment_size, &segment_mult) != 2) { | |
2368 | pr_err("Invalid line %d\n", num); | |
2369 | ret = -EINVAL; | |
2370 | break; | |
2371 | } | |
2372 | num++; | |
2373 | continue; | |
2374 | } | |
2375 | if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { | |
2376 | pr_err("Invalid line %d\n", num); | |
2377 | ret = -EINVAL; | |
2378 | break; | |
2379 | } | |
2380 | ptr = strchr(ptr, ' '); | |
2381 | if (!ptr) { | |
2382 | pr_err("Invalid line %d, missing end lba\n", num); | |
2383 | ret = -EINVAL; | |
2384 | break; | |
2385 | } | |
2386 | ptr++; | |
2387 | ptr = strchr(ptr, ' '); | |
2388 | if (!ptr) { | |
2389 | pr_err("Invalid line %d, missing state definitions\n", | |
2390 | num); | |
2391 | ret = -EINVAL; | |
2392 | break; | |
2393 | } | |
2394 | ptr++; | |
2395 | lba_map = core_alua_allocate_lba_map(&lba_list, | |
2396 | start_lba, end_lba); | |
2397 | if (IS_ERR(lba_map)) { | |
2398 | ret = PTR_ERR(lba_map); | |
2399 | break; | |
2400 | } | |
2401 | pg = 0; | |
2402 | while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { | |
2403 | switch (state) { | |
2404 | case 'O': | |
2405 | alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; | |
2406 | break; | |
2407 | case 'A': | |
2408 | alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; | |
2409 | break; | |
2410 | case 'S': | |
2411 | alua_state = ALUA_ACCESS_STATE_STANDBY; | |
2412 | break; | |
2413 | case 'U': | |
2414 | alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; | |
2415 | break; | |
2416 | default: | |
2417 | pr_err("Invalid ALUA state '%c'\n", state); | |
2418 | ret = -EINVAL; | |
2419 | goto out; | |
2420 | } | |
2421 | ||
2422 | ret = core_alua_allocate_lba_map_mem(lba_map, | |
2423 | pg_id, alua_state); | |
2424 | if (ret) { | |
2425 | pr_err("Invalid target descriptor %d:%c " | |
2426 | "at line %d\n", | |
2427 | pg_id, state, num); | |
2428 | break; | |
2429 | } | |
2430 | pg++; | |
2431 | ptr = strchr(ptr, ' '); | |
2432 | if (ptr) | |
2433 | ptr++; | |
2434 | else | |
2435 | break; | |
2436 | } | |
2437 | if (pg_num == -1) | |
2438 | pg_num = pg; | |
2439 | else if (pg != pg_num) { | |
2440 | pr_err("Only %d from %d port groups definitions " | |
2441 | "at line %d\n", pg, pg_num, num); | |
2442 | ret = -EINVAL; | |
2443 | break; | |
2444 | } | |
2445 | num++; | |
2446 | } | |
2447 | out: | |
2448 | if (ret) { | |
2449 | core_alua_free_lba_map(&lba_list); | |
2450 | count = ret; | |
2451 | } else | |
2452 | core_alua_set_lba_map(dev, &lba_list, | |
2453 | segment_size, segment_mult); | |
f0a8afec | 2454 | kfree(orig); |
229d4f11 HR |
2455 | return count; |
2456 | } | |
2457 | ||
2eafd729 CH |
2458 | CONFIGFS_ATTR_RO(target_dev_, info); |
2459 | CONFIGFS_ATTR_WO(target_dev_, control); | |
2460 | CONFIGFS_ATTR(target_dev_, alias); | |
2461 | CONFIGFS_ATTR(target_dev_, udev_path); | |
2462 | CONFIGFS_ATTR(target_dev_, enable); | |
2463 | CONFIGFS_ATTR(target_dev_, alua_lu_gp); | |
2464 | CONFIGFS_ATTR(target_dev_, lba_map); | |
229d4f11 | 2465 | |
73112edc | 2466 | static struct configfs_attribute *target_core_dev_attrs[] = { |
2eafd729 CH |
2467 | &target_dev_attr_info, |
2468 | &target_dev_attr_control, | |
2469 | &target_dev_attr_alias, | |
2470 | &target_dev_attr_udev_path, | |
2471 | &target_dev_attr_enable, | |
2472 | &target_dev_attr_alua_lu_gp, | |
2473 | &target_dev_attr_lba_map, | |
c66ac9db NB |
2474 | NULL, |
2475 | }; | |
2476 | ||
2477 | static void target_core_dev_release(struct config_item *item) | |
2478 | { | |
0fd97ccf CH |
2479 | struct config_group *dev_cg = to_config_group(item); |
2480 | struct se_device *dev = | |
2481 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 2482 | |
0fd97ccf | 2483 | target_free_device(dev); |
c66ac9db NB |
2484 | } |
2485 | ||
c17cd249 NB |
2486 | /* |
2487 | * Used in target_core_fabric_configfs.c to verify valid se_device symlink | |
2488 | * within target_fabric_port_link() | |
2489 | */ | |
2490 | struct configfs_item_operations target_core_dev_item_ops = { | |
c66ac9db | 2491 | .release = target_core_dev_release, |
c66ac9db NB |
2492 | }; |
2493 | ||
73112edc | 2494 | TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); |
c66ac9db | 2495 | |
73112edc | 2496 | /* End functions for struct config_item_type tb_dev_cit */ |
c66ac9db NB |
2497 | |
2498 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2499 | ||
2eafd729 CH |
2500 | static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) |
2501 | { | |
2502 | return container_of(to_config_group(item), struct t10_alua_lu_gp, | |
2503 | lu_gp_group); | |
2504 | } | |
c66ac9db | 2505 | |
2eafd729 | 2506 | static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) |
c66ac9db | 2507 | { |
2eafd729 CH |
2508 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
2509 | ||
6708bb27 | 2510 | if (!lu_gp->lu_gp_valid_id) |
c66ac9db | 2511 | return 0; |
c66ac9db NB |
2512 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); |
2513 | } | |
2514 | ||
2eafd729 CH |
2515 | static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, |
2516 | const char *page, size_t count) | |
c66ac9db | 2517 | { |
2eafd729 | 2518 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
c66ac9db NB |
2519 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; |
2520 | unsigned long lu_gp_id; | |
2521 | int ret; | |
2522 | ||
57103d7f | 2523 | ret = kstrtoul(page, 0, &lu_gp_id); |
c66ac9db | 2524 | if (ret < 0) { |
57103d7f | 2525 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 2526 | " lu_gp_id\n", ret); |
57103d7f | 2527 | return ret; |
c66ac9db NB |
2528 | } |
2529 | if (lu_gp_id > 0x0000ffff) { | |
6708bb27 | 2530 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
c66ac9db NB |
2531 | " 0x0000ffff\n", lu_gp_id); |
2532 | return -EINVAL; | |
2533 | } | |
2534 | ||
2535 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); | |
2536 | if (ret < 0) | |
2537 | return -EINVAL; | |
2538 | ||
6708bb27 | 2539 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
c66ac9db NB |
2540 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
2541 | config_item_name(&alua_lu_gp_cg->cg_item), | |
2542 | lu_gp->lu_gp_id); | |
2543 | ||
2544 | return count; | |
2545 | } | |
2546 | ||
2eafd729 | 2547 | static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) |
c66ac9db | 2548 | { |
2eafd729 | 2549 | struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); |
c66ac9db NB |
2550 | struct se_device *dev; |
2551 | struct se_hba *hba; | |
c66ac9db NB |
2552 | struct t10_alua_lu_gp_member *lu_gp_mem; |
2553 | ssize_t len = 0, cur_len; | |
2554 | unsigned char buf[LU_GROUP_NAME_BUF]; | |
2555 | ||
2556 | memset(buf, 0, LU_GROUP_NAME_BUF); | |
2557 | ||
2558 | spin_lock(&lu_gp->lu_gp_lock); | |
2559 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { | |
2560 | dev = lu_gp_mem->lu_gp_mem_dev; | |
0fd97ccf | 2561 | hba = dev->se_hba; |
c66ac9db NB |
2562 | |
2563 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", | |
2564 | config_item_name(&hba->hba_group.cg_item), | |
0fd97ccf | 2565 | config_item_name(&dev->dev_group.cg_item)); |
c66ac9db NB |
2566 | cur_len++; /* Extra byte for NULL terminator */ |
2567 | ||
2568 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2569 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2570 | "_members buffer\n"); |
2571 | break; | |
2572 | } | |
2573 | memcpy(page+len, buf, cur_len); | |
2574 | len += cur_len; | |
2575 | } | |
2576 | spin_unlock(&lu_gp->lu_gp_lock); | |
2577 | ||
2578 | return len; | |
2579 | } | |
2580 | ||
2eafd729 CH |
2581 | CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); |
2582 | CONFIGFS_ATTR_RO(target_lu_gp_, members); | |
c66ac9db NB |
2583 | |
2584 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { | |
2eafd729 CH |
2585 | &target_lu_gp_attr_lu_gp_id, |
2586 | &target_lu_gp_attr_members, | |
c66ac9db NB |
2587 | NULL, |
2588 | }; | |
2589 | ||
1f6fe7cb NB |
2590 | static void target_core_alua_lu_gp_release(struct config_item *item) |
2591 | { | |
2592 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2593 | struct t10_alua_lu_gp, lu_gp_group); | |
2594 | ||
2595 | core_alua_free_lu_gp(lu_gp); | |
2596 | } | |
2597 | ||
c66ac9db | 2598 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
1f6fe7cb | 2599 | .release = target_core_alua_lu_gp_release, |
c66ac9db NB |
2600 | }; |
2601 | ||
ece550b5 | 2602 | static const struct config_item_type target_core_alua_lu_gp_cit = { |
c66ac9db NB |
2603 | .ct_item_ops = &target_core_alua_lu_gp_ops, |
2604 | .ct_attrs = target_core_alua_lu_gp_attrs, | |
2605 | .ct_owner = THIS_MODULE, | |
2606 | }; | |
2607 | ||
2608 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ | |
2609 | ||
2610 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2611 | ||
2612 | static struct config_group *target_core_alua_create_lu_gp( | |
2613 | struct config_group *group, | |
2614 | const char *name) | |
2615 | { | |
2616 | struct t10_alua_lu_gp *lu_gp; | |
2617 | struct config_group *alua_lu_gp_cg = NULL; | |
2618 | struct config_item *alua_lu_gp_ci = NULL; | |
2619 | ||
2620 | lu_gp = core_alua_allocate_lu_gp(name, 0); | |
2621 | if (IS_ERR(lu_gp)) | |
2622 | return NULL; | |
2623 | ||
2624 | alua_lu_gp_cg = &lu_gp->lu_gp_group; | |
2625 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; | |
2626 | ||
2627 | config_group_init_type_name(alua_lu_gp_cg, name, | |
2628 | &target_core_alua_lu_gp_cit); | |
2629 | ||
6708bb27 | 2630 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
c66ac9db NB |
2631 | " Group: core/alua/lu_gps/%s\n", |
2632 | config_item_name(alua_lu_gp_ci)); | |
2633 | ||
2634 | return alua_lu_gp_cg; | |
2635 | ||
2636 | } | |
2637 | ||
2638 | static void target_core_alua_drop_lu_gp( | |
2639 | struct config_group *group, | |
2640 | struct config_item *item) | |
2641 | { | |
2642 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), | |
2643 | struct t10_alua_lu_gp, lu_gp_group); | |
2644 | ||
6708bb27 | 2645 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
c66ac9db NB |
2646 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
2647 | config_item_name(item), lu_gp->lu_gp_id); | |
1f6fe7cb NB |
2648 | /* |
2649 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() | |
2650 | * -> target_core_alua_lu_gp_release() | |
2651 | */ | |
c66ac9db | 2652 | config_item_put(item); |
c66ac9db NB |
2653 | } |
2654 | ||
2655 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { | |
2656 | .make_group = &target_core_alua_create_lu_gp, | |
2657 | .drop_item = &target_core_alua_drop_lu_gp, | |
2658 | }; | |
2659 | ||
ece550b5 | 2660 | static const struct config_item_type target_core_alua_lu_gps_cit = { |
c66ac9db NB |
2661 | .ct_item_ops = NULL, |
2662 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, | |
2663 | .ct_owner = THIS_MODULE, | |
2664 | }; | |
2665 | ||
2666 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ | |
2667 | ||
2668 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
2669 | ||
2eafd729 CH |
2670 | static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) |
2671 | { | |
2672 | return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, | |
2673 | tg_pt_gp_group); | |
2674 | } | |
c66ac9db | 2675 | |
2eafd729 CH |
2676 | static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, |
2677 | char *page) | |
c66ac9db NB |
2678 | { |
2679 | return sprintf(page, "%d\n", | |
d19c4643 | 2680 | to_tg_pt_gp(item)->tg_pt_gp_alua_access_state); |
c66ac9db NB |
2681 | } |
2682 | ||
2eafd729 CH |
2683 | static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, |
2684 | const char *page, size_t count) | |
c66ac9db | 2685 | { |
2eafd729 | 2686 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
0fd97ccf | 2687 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
c66ac9db NB |
2688 | unsigned long tmp; |
2689 | int new_state, ret; | |
2690 | ||
6708bb27 | 2691 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
125d0119 | 2692 | pr_err("Unable to do implicit ALUA on non valid" |
c66ac9db NB |
2693 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
2694 | return -EINVAL; | |
2695 | } | |
cb0f32e1 | 2696 | if (!target_dev_configured(dev)) { |
f1453773 NB |
2697 | pr_err("Unable to set alua_access_state while device is" |
2698 | " not configured\n"); | |
2699 | return -ENODEV; | |
2700 | } | |
c66ac9db | 2701 | |
57103d7f | 2702 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2703 | if (ret < 0) { |
6708bb27 | 2704 | pr_err("Unable to extract new ALUA access state from" |
c66ac9db | 2705 | " %s\n", page); |
57103d7f | 2706 | return ret; |
c66ac9db NB |
2707 | } |
2708 | new_state = (int)tmp; | |
2709 | ||
125d0119 HR |
2710 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { |
2711 | pr_err("Unable to process implicit configfs ALUA" | |
2712 | " transition while TPGS_IMPLICIT_ALUA is disabled\n"); | |
c66ac9db NB |
2713 | return -EINVAL; |
2714 | } | |
c66094bf HR |
2715 | if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && |
2716 | new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { | |
2717 | /* LBA DEPENDENT is only allowed with implicit ALUA */ | |
2718 | pr_err("Unable to process implicit configfs ALUA transition" | |
2719 | " while explicit ALUA management is enabled\n"); | |
2720 | return -EINVAL; | |
2721 | } | |
c66ac9db | 2722 | |
0fd97ccf | 2723 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
c66ac9db NB |
2724 | NULL, NULL, new_state, 0); |
2725 | return (!ret) ? count : -EINVAL; | |
2726 | } | |
2727 | ||
2eafd729 CH |
2728 | static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, |
2729 | char *page) | |
c66ac9db | 2730 | { |
2eafd729 | 2731 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2732 | return sprintf(page, "%s\n", |
2733 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); | |
2734 | } | |
2735 | ||
2eafd729 CH |
2736 | static ssize_t target_tg_pt_gp_alua_access_status_store( |
2737 | struct config_item *item, const char *page, size_t count) | |
c66ac9db | 2738 | { |
2eafd729 | 2739 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2740 | unsigned long tmp; |
2741 | int new_status, ret; | |
2742 | ||
6708bb27 AG |
2743 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
2744 | pr_err("Unable to do set ALUA access status on non" | |
c66ac9db NB |
2745 | " valid tg_pt_gp ID: %hu\n", |
2746 | tg_pt_gp->tg_pt_gp_valid_id); | |
2747 | return -EINVAL; | |
2748 | } | |
2749 | ||
57103d7f | 2750 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2751 | if (ret < 0) { |
6708bb27 | 2752 | pr_err("Unable to extract new ALUA access status" |
c66ac9db | 2753 | " from %s\n", page); |
57103d7f | 2754 | return ret; |
c66ac9db NB |
2755 | } |
2756 | new_status = (int)tmp; | |
2757 | ||
2758 | if ((new_status != ALUA_STATUS_NONE) && | |
125d0119 HR |
2759 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && |
2760 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { | |
6708bb27 | 2761 | pr_err("Illegal ALUA access status: 0x%02x\n", |
c66ac9db NB |
2762 | new_status); |
2763 | return -EINVAL; | |
2764 | } | |
2765 | ||
2766 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; | |
2767 | return count; | |
2768 | } | |
2769 | ||
2eafd729 CH |
2770 | static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, |
2771 | char *page) | |
c66ac9db | 2772 | { |
2eafd729 | 2773 | return core_alua_show_access_type(to_tg_pt_gp(item), page); |
c66ac9db NB |
2774 | } |
2775 | ||
2eafd729 CH |
2776 | static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, |
2777 | const char *page, size_t count) | |
c66ac9db | 2778 | { |
2eafd729 | 2779 | return core_alua_store_access_type(to_tg_pt_gp(item), page, count); |
c66ac9db NB |
2780 | } |
2781 | ||
2eafd729 CH |
2782 | #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ |
2783 | static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ | |
2784 | struct config_item *item, char *p) \ | |
b0a382c5 | 2785 | { \ |
2eafd729 CH |
2786 | struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ |
2787 | return sprintf(p, "%d\n", \ | |
2788 | !!(t->tg_pt_gp_alua_supported_states & _bit)); \ | |
2789 | } \ | |
2790 | \ | |
2791 | static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ | |
2792 | struct config_item *item, const char *p, size_t c) \ | |
b0a382c5 | 2793 | { \ |
2eafd729 | 2794 | struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ |
b0a382c5 HR |
2795 | unsigned long tmp; \ |
2796 | int ret; \ | |
2797 | \ | |
2798 | if (!t->tg_pt_gp_valid_id) { \ | |
c0dcafd8 | 2799 | pr_err("Unable to do set " #_name " ALUA state on non" \ |
b0a382c5 HR |
2800 | " valid tg_pt_gp ID: %hu\n", \ |
2801 | t->tg_pt_gp_valid_id); \ | |
2802 | return -EINVAL; \ | |
2803 | } \ | |
2804 | \ | |
2805 | ret = kstrtoul(p, 0, &tmp); \ | |
2806 | if (ret < 0) { \ | |
2807 | pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ | |
2808 | return -EINVAL; \ | |
2809 | } \ | |
2810 | if (tmp > 1) { \ | |
2811 | pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ | |
2812 | return -EINVAL; \ | |
2813 | } \ | |
1f0b030c | 2814 | if (tmp) \ |
2eafd729 | 2815 | t->tg_pt_gp_alua_supported_states |= _bit; \ |
b0a382c5 | 2816 | else \ |
2eafd729 | 2817 | t->tg_pt_gp_alua_supported_states &= ~_bit; \ |
b0a382c5 HR |
2818 | \ |
2819 | return c; \ | |
2820 | } | |
2821 | ||
2eafd729 CH |
2822 | ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); |
2823 | ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); | |
2824 | ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); | |
2825 | ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); | |
2826 | ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); | |
2827 | ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); | |
2828 | ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); | |
6be526c4 | 2829 | |
2eafd729 CH |
2830 | static ssize_t target_tg_pt_gp_alua_write_metadata_show( |
2831 | struct config_item *item, char *page) | |
c66ac9db | 2832 | { |
2eafd729 CH |
2833 | return sprintf(page, "%d\n", |
2834 | to_tg_pt_gp(item)->tg_pt_gp_write_metadata); | |
c66ac9db NB |
2835 | } |
2836 | ||
2eafd729 CH |
2837 | static ssize_t target_tg_pt_gp_alua_write_metadata_store( |
2838 | struct config_item *item, const char *page, size_t count) | |
c66ac9db | 2839 | { |
2eafd729 | 2840 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2841 | unsigned long tmp; |
2842 | int ret; | |
2843 | ||
57103d7f | 2844 | ret = kstrtoul(page, 0, &tmp); |
c66ac9db | 2845 | if (ret < 0) { |
6708bb27 | 2846 | pr_err("Unable to extract alua_write_metadata\n"); |
57103d7f | 2847 | return ret; |
c66ac9db NB |
2848 | } |
2849 | ||
2850 | if ((tmp != 0) && (tmp != 1)) { | |
6708bb27 | 2851 | pr_err("Illegal value for alua_write_metadata:" |
c66ac9db NB |
2852 | " %lu\n", tmp); |
2853 | return -EINVAL; | |
2854 | } | |
2855 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; | |
2856 | ||
2857 | return count; | |
2858 | } | |
2859 | ||
2eafd729 CH |
2860 | static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, |
2861 | char *page) | |
c66ac9db | 2862 | { |
2eafd729 | 2863 | return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); |
c66ac9db NB |
2864 | } |
2865 | ||
2eafd729 CH |
2866 | static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, |
2867 | const char *page, size_t count) | |
c66ac9db | 2868 | { |
2eafd729 CH |
2869 | return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, |
2870 | count); | |
c66ac9db NB |
2871 | } |
2872 | ||
2eafd729 CH |
2873 | static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, |
2874 | char *page) | |
c66ac9db | 2875 | { |
2eafd729 | 2876 | return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); |
c66ac9db NB |
2877 | } |
2878 | ||
2eafd729 CH |
2879 | static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, |
2880 | const char *page, size_t count) | |
c66ac9db | 2881 | { |
2eafd729 CH |
2882 | return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, |
2883 | count); | |
c66ac9db NB |
2884 | } |
2885 | ||
2eafd729 CH |
2886 | static ssize_t target_tg_pt_gp_implicit_trans_secs_show( |
2887 | struct config_item *item, char *page) | |
5b9a4d72 | 2888 | { |
2eafd729 | 2889 | return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); |
5b9a4d72 NB |
2890 | } |
2891 | ||
2eafd729 CH |
2892 | static ssize_t target_tg_pt_gp_implicit_trans_secs_store( |
2893 | struct config_item *item, const char *page, size_t count) | |
5b9a4d72 | 2894 | { |
2eafd729 CH |
2895 | return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, |
2896 | count); | |
5b9a4d72 NB |
2897 | } |
2898 | ||
2eafd729 CH |
2899 | static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, |
2900 | char *page) | |
c66ac9db | 2901 | { |
2eafd729 | 2902 | return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); |
c66ac9db NB |
2903 | } |
2904 | ||
2eafd729 CH |
2905 | static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, |
2906 | const char *page, size_t count) | |
c66ac9db | 2907 | { |
2eafd729 | 2908 | return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); |
c66ac9db NB |
2909 | } |
2910 | ||
2eafd729 CH |
2911 | static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, |
2912 | char *page) | |
c66ac9db | 2913 | { |
2eafd729 CH |
2914 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
2915 | ||
6708bb27 | 2916 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
c66ac9db | 2917 | return 0; |
c66ac9db NB |
2918 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); |
2919 | } | |
2920 | ||
2eafd729 CH |
2921 | static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, |
2922 | const char *page, size_t count) | |
c66ac9db | 2923 | { |
2eafd729 | 2924 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db NB |
2925 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; |
2926 | unsigned long tg_pt_gp_id; | |
2927 | int ret; | |
2928 | ||
57103d7f | 2929 | ret = kstrtoul(page, 0, &tg_pt_gp_id); |
c66ac9db | 2930 | if (ret < 0) { |
3d035237 HR |
2931 | pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n", |
2932 | page); | |
57103d7f | 2933 | return ret; |
c66ac9db NB |
2934 | } |
2935 | if (tg_pt_gp_id > 0x0000ffff) { | |
3d035237 HR |
2936 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum: 0x0000ffff\n", |
2937 | tg_pt_gp_id); | |
c66ac9db NB |
2938 | return -EINVAL; |
2939 | } | |
2940 | ||
2941 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); | |
2942 | if (ret < 0) | |
2943 | return -EINVAL; | |
2944 | ||
6708bb27 | 2945 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
c66ac9db NB |
2946 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
2947 | config_item_name(&alua_tg_pt_gp_cg->cg_item), | |
2948 | tg_pt_gp->tg_pt_gp_id); | |
2949 | ||
2950 | return count; | |
2951 | } | |
2952 | ||
2eafd729 CH |
2953 | static ssize_t target_tg_pt_gp_members_show(struct config_item *item, |
2954 | char *page) | |
c66ac9db | 2955 | { |
2eafd729 | 2956 | struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); |
c66ac9db | 2957 | struct se_lun *lun; |
c66ac9db NB |
2958 | ssize_t len = 0, cur_len; |
2959 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; | |
2960 | ||
2961 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); | |
2962 | ||
2963 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); | |
adf653f9 CH |
2964 | list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, |
2965 | lun_tg_pt_gp_link) { | |
2966 | struct se_portal_group *tpg = lun->lun_tpg; | |
c66ac9db NB |
2967 | |
2968 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" | |
30c7ca93 | 2969 | "/%s\n", tpg->se_tpg_tfo->fabric_name, |
e3d6f909 AG |
2970 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), |
2971 | tpg->se_tpg_tfo->tpg_get_tag(tpg), | |
c66ac9db NB |
2972 | config_item_name(&lun->lun_group.cg_item)); |
2973 | cur_len++; /* Extra byte for NULL terminator */ | |
2974 | ||
2975 | if ((cur_len + len) > PAGE_SIZE) { | |
6708bb27 | 2976 | pr_warn("Ran out of lu_gp_show_attr" |
c66ac9db NB |
2977 | "_members buffer\n"); |
2978 | break; | |
2979 | } | |
2980 | memcpy(page+len, buf, cur_len); | |
2981 | len += cur_len; | |
2982 | } | |
2983 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); | |
2984 | ||
2985 | return len; | |
2986 | } | |
2987 | ||
2eafd729 CH |
2988 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); |
2989 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); | |
2990 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); | |
2991 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); | |
2992 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); | |
2993 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); | |
2994 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); | |
2995 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); | |
2996 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); | |
2997 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); | |
2998 | CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); | |
2999 | CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); | |
3000 | CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); | |
3001 | CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); | |
3002 | CONFIGFS_ATTR(target_tg_pt_gp_, preferred); | |
3003 | CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); | |
3004 | CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); | |
c66ac9db NB |
3005 | |
3006 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { | |
2eafd729 CH |
3007 | &target_tg_pt_gp_attr_alua_access_state, |
3008 | &target_tg_pt_gp_attr_alua_access_status, | |
3009 | &target_tg_pt_gp_attr_alua_access_type, | |
3010 | &target_tg_pt_gp_attr_alua_support_transitioning, | |
3011 | &target_tg_pt_gp_attr_alua_support_offline, | |
3012 | &target_tg_pt_gp_attr_alua_support_lba_dependent, | |
3013 | &target_tg_pt_gp_attr_alua_support_unavailable, | |
3014 | &target_tg_pt_gp_attr_alua_support_standby, | |
3015 | &target_tg_pt_gp_attr_alua_support_active_nonoptimized, | |
3016 | &target_tg_pt_gp_attr_alua_support_active_optimized, | |
3017 | &target_tg_pt_gp_attr_alua_write_metadata, | |
3018 | &target_tg_pt_gp_attr_nonop_delay_msecs, | |
3019 | &target_tg_pt_gp_attr_trans_delay_msecs, | |
3020 | &target_tg_pt_gp_attr_implicit_trans_secs, | |
3021 | &target_tg_pt_gp_attr_preferred, | |
3022 | &target_tg_pt_gp_attr_tg_pt_gp_id, | |
3023 | &target_tg_pt_gp_attr_members, | |
c66ac9db NB |
3024 | NULL, |
3025 | }; | |
3026 | ||
1f6fe7cb NB |
3027 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
3028 | { | |
3029 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
3030 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
3031 | ||
3032 | core_alua_free_tg_pt_gp(tg_pt_gp); | |
3033 | } | |
3034 | ||
c66ac9db | 3035 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
1f6fe7cb | 3036 | .release = target_core_alua_tg_pt_gp_release, |
c66ac9db NB |
3037 | }; |
3038 | ||
ece550b5 | 3039 | static const struct config_item_type target_core_alua_tg_pt_gp_cit = { |
c66ac9db NB |
3040 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, |
3041 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, | |
3042 | .ct_owner = THIS_MODULE, | |
3043 | }; | |
3044 | ||
3045 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ | |
3046 | ||
72aca57b | 3047 | /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
3048 | |
3049 | static struct config_group *target_core_alua_create_tg_pt_gp( | |
3050 | struct config_group *group, | |
3051 | const char *name) | |
3052 | { | |
3053 | struct t10_alua *alua = container_of(group, struct t10_alua, | |
3054 | alua_tg_pt_gps_group); | |
3055 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
3056 | struct config_group *alua_tg_pt_gp_cg = NULL; |
3057 | struct config_item *alua_tg_pt_gp_ci = NULL; | |
3058 | ||
0fd97ccf | 3059 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
6708bb27 | 3060 | if (!tg_pt_gp) |
c66ac9db NB |
3061 | return NULL; |
3062 | ||
3063 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; | |
3064 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; | |
3065 | ||
3066 | config_group_init_type_name(alua_tg_pt_gp_cg, name, | |
3067 | &target_core_alua_tg_pt_gp_cit); | |
3068 | ||
6708bb27 | 3069 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
c66ac9db NB |
3070 | " Group: alua/tg_pt_gps/%s\n", |
3071 | config_item_name(alua_tg_pt_gp_ci)); | |
3072 | ||
3073 | return alua_tg_pt_gp_cg; | |
3074 | } | |
3075 | ||
3076 | static void target_core_alua_drop_tg_pt_gp( | |
3077 | struct config_group *group, | |
3078 | struct config_item *item) | |
3079 | { | |
3080 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), | |
3081 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); | |
3082 | ||
6708bb27 | 3083 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
c66ac9db NB |
3084 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
3085 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); | |
1f6fe7cb NB |
3086 | /* |
3087 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() | |
3088 | * -> target_core_alua_tg_pt_gp_release(). | |
3089 | */ | |
c66ac9db | 3090 | config_item_put(item); |
c66ac9db NB |
3091 | } |
3092 | ||
3093 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { | |
3094 | .make_group = &target_core_alua_create_tg_pt_gp, | |
3095 | .drop_item = &target_core_alua_drop_tg_pt_gp, | |
3096 | }; | |
3097 | ||
72aca57b | 3098 | TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); |
c66ac9db | 3099 | |
72aca57b | 3100 | /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ |
c66ac9db NB |
3101 | |
3102 | /* Start functions for struct config_item_type target_core_alua_cit */ | |
3103 | ||
3104 | /* | |
3105 | * target_core_alua_cit is a ConfigFS group that lives under | |
3106 | * /sys/kernel/config/target/core/alua. There are default groups | |
3107 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to | |
3108 | * target_core_alua_cit in target_core_init_configfs() below. | |
3109 | */ | |
ece550b5 | 3110 | static const struct config_item_type target_core_alua_cit = { |
c66ac9db NB |
3111 | .ct_item_ops = NULL, |
3112 | .ct_attrs = NULL, | |
3113 | .ct_owner = THIS_MODULE, | |
3114 | }; | |
3115 | ||
3116 | /* End functions for struct config_item_type target_core_alua_cit */ | |
3117 | ||
d23ab570 | 3118 | /* Start functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 NB |
3119 | |
3120 | static struct config_group *target_core_stat_mkdir( | |
3121 | struct config_group *group, | |
3122 | const char *name) | |
3123 | { | |
3124 | return ERR_PTR(-ENOSYS); | |
3125 | } | |
3126 | ||
3127 | static void target_core_stat_rmdir( | |
3128 | struct config_group *group, | |
3129 | struct config_item *item) | |
3130 | { | |
3131 | return; | |
3132 | } | |
3133 | ||
3134 | static struct configfs_group_operations target_core_stat_group_ops = { | |
3135 | .make_group = &target_core_stat_mkdir, | |
3136 | .drop_item = &target_core_stat_rmdir, | |
3137 | }; | |
3138 | ||
d23ab570 | 3139 | TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); |
12d23384 | 3140 | |
d23ab570 | 3141 | /* End functions for struct config_item_type tb_dev_stat_cit */ |
12d23384 | 3142 | |
c66ac9db NB |
3143 | /* Start functions for struct config_item_type target_core_hba_cit */ |
3144 | ||
3145 | static struct config_group *target_core_make_subdev( | |
3146 | struct config_group *group, | |
3147 | const char *name) | |
3148 | { | |
3149 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
c66ac9db NB |
3150 | struct config_item *hba_ci = &group->cg_item; |
3151 | struct se_hba *hba = item_to_hba(hba_ci); | |
0a06d430 | 3152 | struct target_backend *tb = hba->backend; |
0fd97ccf | 3153 | struct se_device *dev; |
12d23384 | 3154 | int errno = -ENOMEM, ret; |
c66ac9db | 3155 | |
12d23384 NB |
3156 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
3157 | if (ret) | |
3158 | return ERR_PTR(ret); | |
c66ac9db | 3159 | |
0fd97ccf CH |
3160 | dev = target_alloc_device(hba, name); |
3161 | if (!dev) | |
3162 | goto out_unlock; | |
3163 | ||
1ae1602d | 3164 | config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit); |
c66ac9db | 3165 | |
8dc31ff9 MC |
3166 | config_group_init_type_name(&dev->dev_action_group, "action", |
3167 | &tb->tb_dev_action_cit); | |
3168 | configfs_add_default_group(&dev->dev_action_group, &dev->dev_group); | |
3169 | ||
0fd97ccf | 3170 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
0a06d430 | 3171 | &tb->tb_dev_attrib_cit); |
1ae1602d CH |
3172 | configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group); |
3173 | ||
0fd97ccf | 3174 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
0a06d430 | 3175 | &tb->tb_dev_pr_cit); |
1ae1602d CH |
3176 | configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group); |
3177 | ||
0fd97ccf | 3178 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
0a06d430 | 3179 | &tb->tb_dev_wwn_cit); |
1ae1602d CH |
3180 | configfs_add_default_group(&dev->t10_wwn.t10_wwn_group, |
3181 | &dev->dev_group); | |
3182 | ||
0fd97ccf | 3183 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
0a06d430 | 3184 | "alua", &tb->tb_dev_alua_tg_pt_gps_cit); |
1ae1602d CH |
3185 | configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group, |
3186 | &dev->dev_group); | |
3187 | ||
0fd97ccf | 3188 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
0a06d430 | 3189 | "statistics", &tb->tb_dev_stat_cit); |
1ae1602d CH |
3190 | configfs_add_default_group(&dev->dev_stat_grps.stat_group, |
3191 | &dev->dev_group); | |
12d23384 | 3192 | |
c66ac9db | 3193 | /* |
12d23384 | 3194 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
c66ac9db | 3195 | */ |
0fd97ccf | 3196 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
6708bb27 | 3197 | if (!tg_pt_gp) |
1ae1602d | 3198 | goto out_free_device; |
0fd97ccf | 3199 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
c66ac9db | 3200 | |
c66ac9db NB |
3201 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, |
3202 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); | |
1ae1602d CH |
3203 | configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group, |
3204 | &dev->t10_alua.alua_tg_pt_gps_group); | |
3205 | ||
12d23384 NB |
3206 | /* |
3207 | * Add core/$HBA/$DEV/statistics/ default groups | |
3208 | */ | |
0fd97ccf | 3209 | target_stat_setup_dev_default_groups(dev); |
c66ac9db NB |
3210 | |
3211 | mutex_unlock(&hba->hba_access_mutex); | |
1ae1602d | 3212 | return &dev->dev_group; |
0fd97ccf | 3213 | |
0fd97ccf CH |
3214 | out_free_device: |
3215 | target_free_device(dev); | |
3216 | out_unlock: | |
c66ac9db | 3217 | mutex_unlock(&hba->hba_access_mutex); |
12d23384 | 3218 | return ERR_PTR(errno); |
c66ac9db NB |
3219 | } |
3220 | ||
3221 | static void target_core_drop_subdev( | |
3222 | struct config_group *group, | |
3223 | struct config_item *item) | |
3224 | { | |
0fd97ccf CH |
3225 | struct config_group *dev_cg = to_config_group(item); |
3226 | struct se_device *dev = | |
3227 | container_of(dev_cg, struct se_device, dev_group); | |
c66ac9db | 3228 | struct se_hba *hba; |
c66ac9db | 3229 | |
0fd97ccf | 3230 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
c66ac9db | 3231 | |
1f6fe7cb | 3232 | mutex_lock(&hba->hba_access_mutex); |
c66ac9db | 3233 | |
1ae1602d CH |
3234 | configfs_remove_default_groups(&dev->dev_stat_grps.stat_group); |
3235 | configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group); | |
12d23384 | 3236 | |
1f6fe7cb NB |
3237 | /* |
3238 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp | |
3239 | * directly from target_core_alua_tg_pt_gp_release(). | |
3240 | */ | |
0fd97ccf | 3241 | dev->t10_alua.default_tg_pt_gp = NULL; |
c66ac9db | 3242 | |
1ae1602d CH |
3243 | configfs_remove_default_groups(dev_cg); |
3244 | ||
c66ac9db | 3245 | /* |
0fd97ccf | 3246 | * se_dev is released from target_core_dev_item_ops->release() |
c66ac9db | 3247 | */ |
1f6fe7cb | 3248 | config_item_put(item); |
c66ac9db | 3249 | mutex_unlock(&hba->hba_access_mutex); |
c66ac9db NB |
3250 | } |
3251 | ||
3252 | static struct configfs_group_operations target_core_hba_group_ops = { | |
3253 | .make_group = target_core_make_subdev, | |
3254 | .drop_item = target_core_drop_subdev, | |
3255 | }; | |
3256 | ||
c66ac9db | 3257 | |
2eafd729 CH |
3258 | static inline struct se_hba *to_hba(struct config_item *item) |
3259 | { | |
3260 | return container_of(to_config_group(item), struct se_hba, hba_group); | |
3261 | } | |
c66ac9db | 3262 | |
2eafd729 | 3263 | static ssize_t target_hba_info_show(struct config_item *item, char *page) |
c66ac9db | 3264 | { |
2eafd729 CH |
3265 | struct se_hba *hba = to_hba(item); |
3266 | ||
c66ac9db | 3267 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", |
0a06d430 | 3268 | hba->hba_id, hba->backend->ops->name, |
ce8dd25d | 3269 | TARGET_CORE_VERSION); |
c66ac9db NB |
3270 | } |
3271 | ||
2eafd729 | 3272 | static ssize_t target_hba_mode_show(struct config_item *item, char *page) |
c66ac9db | 3273 | { |
2eafd729 | 3274 | struct se_hba *hba = to_hba(item); |
c66ac9db NB |
3275 | int hba_mode = 0; |
3276 | ||
3277 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) | |
3278 | hba_mode = 1; | |
3279 | ||
3280 | return sprintf(page, "%d\n", hba_mode); | |
3281 | } | |
3282 | ||
2eafd729 CH |
3283 | static ssize_t target_hba_mode_store(struct config_item *item, |
3284 | const char *page, size_t count) | |
c66ac9db | 3285 | { |
2eafd729 | 3286 | struct se_hba *hba = to_hba(item); |
c66ac9db NB |
3287 | unsigned long mode_flag; |
3288 | int ret; | |
3289 | ||
0a06d430 | 3290 | if (hba->backend->ops->pmode_enable_hba == NULL) |
c66ac9db NB |
3291 | return -EINVAL; |
3292 | ||
57103d7f | 3293 | ret = kstrtoul(page, 0, &mode_flag); |
c66ac9db | 3294 | if (ret < 0) { |
6708bb27 | 3295 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
57103d7f | 3296 | return ret; |
c66ac9db NB |
3297 | } |
3298 | ||
0fd97ccf | 3299 | if (hba->dev_count) { |
6708bb27 | 3300 | pr_err("Unable to set hba_mode with active devices\n"); |
c66ac9db NB |
3301 | return -EINVAL; |
3302 | } | |
c66ac9db | 3303 | |
0a06d430 | 3304 | ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); |
c66ac9db NB |
3305 | if (ret < 0) |
3306 | return -EINVAL; | |
3307 | if (ret > 0) | |
3308 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; | |
3309 | else if (ret == 0) | |
3310 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; | |
3311 | ||
3312 | return count; | |
3313 | } | |
3314 | ||
2eafd729 CH |
3315 | CONFIGFS_ATTR_RO(target_, hba_info); |
3316 | CONFIGFS_ATTR(target_, hba_mode); | |
c66ac9db | 3317 | |
1f6fe7cb NB |
3318 | static void target_core_hba_release(struct config_item *item) |
3319 | { | |
3320 | struct se_hba *hba = container_of(to_config_group(item), | |
3321 | struct se_hba, hba_group); | |
3322 | core_delete_hba(hba); | |
3323 | } | |
3324 | ||
c66ac9db | 3325 | static struct configfs_attribute *target_core_hba_attrs[] = { |
2eafd729 CH |
3326 | &target_attr_hba_info, |
3327 | &target_attr_hba_mode, | |
c66ac9db NB |
3328 | NULL, |
3329 | }; | |
3330 | ||
3331 | static struct configfs_item_operations target_core_hba_item_ops = { | |
1f6fe7cb | 3332 | .release = target_core_hba_release, |
c66ac9db NB |
3333 | }; |
3334 | ||
ece550b5 | 3335 | static const struct config_item_type target_core_hba_cit = { |
c66ac9db NB |
3336 | .ct_item_ops = &target_core_hba_item_ops, |
3337 | .ct_group_ops = &target_core_hba_group_ops, | |
3338 | .ct_attrs = target_core_hba_attrs, | |
3339 | .ct_owner = THIS_MODULE, | |
3340 | }; | |
3341 | ||
3342 | static struct config_group *target_core_call_addhbatotarget( | |
3343 | struct config_group *group, | |
3344 | const char *name) | |
3345 | { | |
3346 | char *se_plugin_str, *str, *str2; | |
3347 | struct se_hba *hba; | |
3348 | char buf[TARGET_CORE_NAME_MAX_LEN]; | |
3349 | unsigned long plugin_dep_id = 0; | |
3350 | int ret; | |
3351 | ||
3352 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); | |
60d645a4 | 3353 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
6708bb27 | 3354 | pr_err("Passed *name strlen(): %d exceeds" |
c66ac9db NB |
3355 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
3356 | TARGET_CORE_NAME_MAX_LEN); | |
3357 | return ERR_PTR(-ENAMETOOLONG); | |
3358 | } | |
3359 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); | |
3360 | ||
3361 | str = strstr(buf, "_"); | |
6708bb27 AG |
3362 | if (!str) { |
3363 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); | |
c66ac9db NB |
3364 | return ERR_PTR(-EINVAL); |
3365 | } | |
3366 | se_plugin_str = buf; | |
3367 | /* | |
3368 | * Special case for subsystem plugins that have "_" in their names. | |
3369 | * Namely rd_direct and rd_mcp.. | |
3370 | */ | |
3371 | str2 = strstr(str+1, "_"); | |
6708bb27 | 3372 | if (str2) { |
c66ac9db NB |
3373 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
3374 | str2++; /* Skip to start of plugin dependent ID */ | |
3375 | str = str2; | |
3376 | } else { | |
3377 | *str = '\0'; /* Terminate for *se_plugin_str */ | |
3378 | str++; /* Skip to start of plugin dependent ID */ | |
3379 | } | |
3380 | ||
57103d7f | 3381 | ret = kstrtoul(str, 0, &plugin_dep_id); |
c66ac9db | 3382 | if (ret < 0) { |
57103d7f | 3383 | pr_err("kstrtoul() returned %d for" |
c66ac9db | 3384 | " plugin_dep_id\n", ret); |
57103d7f | 3385 | return ERR_PTR(ret); |
c66ac9db NB |
3386 | } |
3387 | /* | |
3388 | * Load up TCM subsystem plugins if they have not already been loaded. | |
3389 | */ | |
dbc5623e | 3390 | transport_subsystem_check_init(); |
c66ac9db NB |
3391 | |
3392 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); | |
3393 | if (IS_ERR(hba)) | |
3394 | return ERR_CAST(hba); | |
3395 | ||
3396 | config_group_init_type_name(&hba->hba_group, name, | |
3397 | &target_core_hba_cit); | |
3398 | ||
3399 | return &hba->hba_group; | |
3400 | } | |
3401 | ||
3402 | static void target_core_call_delhbafromtarget( | |
3403 | struct config_group *group, | |
3404 | struct config_item *item) | |
3405 | { | |
1f6fe7cb NB |
3406 | /* |
3407 | * core_delete_hba() is called from target_core_hba_item_ops->release() | |
3408 | * -> target_core_hba_release() | |
3409 | */ | |
c66ac9db | 3410 | config_item_put(item); |
c66ac9db NB |
3411 | } |
3412 | ||
3413 | static struct configfs_group_operations target_core_group_ops = { | |
3414 | .make_group = target_core_call_addhbatotarget, | |
3415 | .drop_item = target_core_call_delhbafromtarget, | |
3416 | }; | |
3417 | ||
ece550b5 | 3418 | static const struct config_item_type target_core_cit = { |
c66ac9db NB |
3419 | .ct_item_ops = NULL, |
3420 | .ct_group_ops = &target_core_group_ops, | |
3421 | .ct_attrs = NULL, | |
3422 | .ct_owner = THIS_MODULE, | |
3423 | }; | |
3424 | ||
3425 | /* Stop functions for struct config_item_type target_core_hba_cit */ | |
3426 | ||
0a06d430 | 3427 | void target_setup_backend_cits(struct target_backend *tb) |
73112edc | 3428 | { |
0a06d430 | 3429 | target_core_setup_dev_cit(tb); |
8dc31ff9 | 3430 | target_core_setup_dev_action_cit(tb); |
0a06d430 CH |
3431 | target_core_setup_dev_attrib_cit(tb); |
3432 | target_core_setup_dev_pr_cit(tb); | |
3433 | target_core_setup_dev_wwn_cit(tb); | |
3434 | target_core_setup_dev_alua_tg_pt_gps_cit(tb); | |
3435 | target_core_setup_dev_stat_cit(tb); | |
73112edc | 3436 | } |
73112edc | 3437 | |
78a6295c LD |
3438 | static void target_init_dbroot(void) |
3439 | { | |
3440 | struct file *fp; | |
3441 | ||
3442 | snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED); | |
3443 | fp = filp_open(db_root_stage, O_RDONLY, 0); | |
3444 | if (IS_ERR(fp)) { | |
3445 | pr_err("db_root: cannot open: %s\n", db_root_stage); | |
3446 | return; | |
3447 | } | |
3448 | if (!S_ISDIR(file_inode(fp)->i_mode)) { | |
3449 | filp_close(fp, NULL); | |
3450 | pr_err("db_root: not a valid directory: %s\n", db_root_stage); | |
3451 | return; | |
3452 | } | |
3453 | filp_close(fp, NULL); | |
3454 | ||
3455 | strncpy(db_root, db_root_stage, DB_ROOT_LEN); | |
3456 | pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); | |
3457 | } | |
3458 | ||
54550fab | 3459 | static int __init target_core_init_configfs(void) |
c66ac9db | 3460 | { |
d588cf8f | 3461 | struct configfs_subsystem *subsys = &target_core_fabrics; |
c66ac9db NB |
3462 | struct t10_alua_lu_gp *lu_gp; |
3463 | int ret; | |
3464 | ||
6708bb27 | 3465 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
c66ac9db NB |
3466 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
3467 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); | |
3468 | ||
c66ac9db NB |
3469 | config_group_init(&subsys->su_group); |
3470 | mutex_init(&subsys->su_mutex); | |
3471 | ||
e3d6f909 | 3472 | ret = init_se_kmem_caches(); |
c66ac9db | 3473 | if (ret < 0) |
e3d6f909 | 3474 | return ret; |
c66ac9db NB |
3475 | /* |
3476 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object | |
3477 | * and ALUA Logical Unit Group and Target Port Group infrastructure. | |
3478 | */ | |
1ae1602d CH |
3479 | config_group_init_type_name(&target_core_hbagroup, "core", |
3480 | &target_core_cit); | |
3481 | configfs_add_default_group(&target_core_hbagroup, &subsys->su_group); | |
c66ac9db | 3482 | |
c66ac9db NB |
3483 | /* |
3484 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ | |
3485 | */ | |
1ae1602d CH |
3486 | config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit); |
3487 | configfs_add_default_group(&alua_group, &target_core_hbagroup); | |
3488 | ||
c66ac9db NB |
3489 | /* |
3490 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS | |
3491 | * groups under /sys/kernel/config/target/core/alua/ | |
3492 | */ | |
1ae1602d CH |
3493 | config_group_init_type_name(&alua_lu_gps_group, "lu_gps", |
3494 | &target_core_alua_lu_gps_cit); | |
3495 | configfs_add_default_group(&alua_lu_gps_group, &alua_group); | |
c66ac9db | 3496 | |
c66ac9db NB |
3497 | /* |
3498 | * Add core/alua/lu_gps/default_lu_gp | |
3499 | */ | |
3500 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); | |
37bb7899 PST |
3501 | if (IS_ERR(lu_gp)) { |
3502 | ret = -ENOMEM; | |
c66ac9db | 3503 | goto out_global; |
37bb7899 | 3504 | } |
c66ac9db | 3505 | |
c66ac9db NB |
3506 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", |
3507 | &target_core_alua_lu_gp_cit); | |
1ae1602d CH |
3508 | configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group); |
3509 | ||
e3d6f909 | 3510 | default_lu_gp = lu_gp; |
1ae1602d | 3511 | |
c66ac9db NB |
3512 | /* |
3513 | * Register the target_core_mod subsystem with configfs. | |
3514 | */ | |
3515 | ret = configfs_register_subsystem(subsys); | |
3516 | if (ret < 0) { | |
6708bb27 | 3517 | pr_err("Error %d while registering subsystem %s\n", |
c66ac9db NB |
3518 | ret, subsys->su_group.cg_item.ci_namebuf); |
3519 | goto out_global; | |
3520 | } | |
6708bb27 | 3521 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
ce8dd25d | 3522 | " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" |
c66ac9db NB |
3523 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); |
3524 | /* | |
3525 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 | |
3526 | */ | |
3527 | ret = rd_module_init(); | |
3528 | if (ret < 0) | |
3529 | goto out; | |
3530 | ||
0d0f9dfb RD |
3531 | ret = core_dev_setup_virtual_lun0(); |
3532 | if (ret < 0) | |
c66ac9db NB |
3533 | goto out; |
3534 | ||
f99715ac NB |
3535 | ret = target_xcopy_setup_pt(); |
3536 | if (ret < 0) | |
3537 | goto out; | |
3538 | ||
78a6295c LD |
3539 | target_init_dbroot(); |
3540 | ||
c66ac9db NB |
3541 | return 0; |
3542 | ||
3543 | out: | |
3544 | configfs_unregister_subsystem(subsys); | |
c66ac9db NB |
3545 | core_dev_release_virtual_lun0(); |
3546 | rd_module_exit(); | |
3547 | out_global: | |
e3d6f909 AG |
3548 | if (default_lu_gp) { |
3549 | core_alua_free_lu_gp(default_lu_gp); | |
3550 | default_lu_gp = NULL; | |
c66ac9db | 3551 | } |
e3d6f909 AG |
3552 | release_se_kmem_caches(); |
3553 | return ret; | |
c66ac9db NB |
3554 | } |
3555 | ||
54550fab | 3556 | static void __exit target_core_exit_configfs(void) |
c66ac9db | 3557 | { |
1ae1602d CH |
3558 | configfs_remove_default_groups(&alua_lu_gps_group); |
3559 | configfs_remove_default_groups(&alua_group); | |
3560 | configfs_remove_default_groups(&target_core_hbagroup); | |
c66ac9db | 3561 | |
7c2bf6e9 NB |
3562 | /* |
3563 | * We expect subsys->su_group.default_groups to be released | |
3564 | * by configfs subsystem provider logic.. | |
3565 | */ | |
d588cf8f | 3566 | configfs_unregister_subsystem(&target_core_fabrics); |
c66ac9db | 3567 | |
e3d6f909 AG |
3568 | core_alua_free_lu_gp(default_lu_gp); |
3569 | default_lu_gp = NULL; | |
7c2bf6e9 | 3570 | |
6708bb27 | 3571 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
c66ac9db NB |
3572 | " Infrastructure\n"); |
3573 | ||
c66ac9db NB |
3574 | core_dev_release_virtual_lun0(); |
3575 | rd_module_exit(); | |
f99715ac | 3576 | target_xcopy_release_pt(); |
e3d6f909 | 3577 | release_se_kmem_caches(); |
c66ac9db NB |
3578 | } |
3579 | ||
3580 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); | |
3581 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); | |
3582 | MODULE_LICENSE("GPL"); | |
3583 | ||
3584 | module_init(target_core_init_configfs); | |
3585 | module_exit(target_core_exit_configfs); |