1 /*******************************************************************************
2 * This file contains iSCSI Target Portal Group related functions.
3 *
4 * (c) Copyright 2007-2013 Datera, Inc.
5 *
6 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 ******************************************************************************/
18
19 #include <target/target_core_base.h>
20 #include <target/target_core_fabric.h>
21 #include <target/target_core_configfs.h>
22
23 #include <target/iscsi/iscsi_target_core.h>
24 #include "iscsi_target_erl0.h"
25 #include "iscsi_target_login.h"
26 #include "iscsi_target_nodeattrib.h"
27 #include "iscsi_target_tpg.h"
28 #include "iscsi_target_util.h"
29 #include "iscsi_target.h"
30 #include "iscsi_target_parameters.h"
31
32 #include <target/iscsi/iscsi_transport.h>
33
iscsit_alloc_portal_group(struct iscsi_tiqn * tiqn,u16 tpgt)34 struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt)
35 {
36 struct iscsi_portal_group *tpg;
37
38 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL);
39 if (!tpg) {
40 pr_err("Unable to allocate struct iscsi_portal_group\n");
41 return NULL;
42 }
43
44 tpg->tpgt = tpgt;
45 tpg->tpg_state = TPG_STATE_FREE;
46 tpg->tpg_tiqn = tiqn;
47 INIT_LIST_HEAD(&tpg->tpg_gnp_list);
48 INIT_LIST_HEAD(&tpg->tpg_list);
49 mutex_init(&tpg->tpg_access_lock);
50 sema_init(&tpg->np_login_sem, 1);
51 spin_lock_init(&tpg->tpg_state_lock);
52 spin_lock_init(&tpg->tpg_np_lock);
53
54 return tpg;
55 }
56
57 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *);
58
iscsit_load_discovery_tpg(void)59 int iscsit_load_discovery_tpg(void)
60 {
61 struct iscsi_param *param;
62 struct iscsi_portal_group *tpg;
63 int ret;
64
65 tpg = iscsit_alloc_portal_group(NULL, 1);
66 if (!tpg) {
67 pr_err("Unable to allocate struct iscsi_portal_group\n");
68 return -1;
69 }
70
71 ret = core_tpg_register(&iscsi_ops, NULL, &tpg->tpg_se_tpg,
72 tpg, TRANSPORT_TPG_TYPE_DISCOVERY);
73 if (ret < 0) {
74 kfree(tpg);
75 return -1;
76 }
77
78 tpg->sid = 1; /* First Assigned LIO Session ID */
79 iscsit_set_default_tpg_attribs(tpg);
80
81 if (iscsi_create_default_params(&tpg->param_list) < 0)
82 goto out;
83 /*
84 * By default we disable authentication for discovery sessions,
85 * this can be changed with:
86 *
87 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth
88 */
89 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
90 if (!param)
91 goto out;
92
93 if (iscsi_update_param_value(param, "CHAP,None") < 0)
94 goto out;
95
96 tpg->tpg_attrib.authentication = 0;
97
98 spin_lock(&tpg->tpg_state_lock);
99 tpg->tpg_state = TPG_STATE_ACTIVE;
100 spin_unlock(&tpg->tpg_state_lock);
101
102 iscsit_global->discovery_tpg = tpg;
103 pr_debug("CORE[0] - Allocated Discovery TPG\n");
104
105 return 0;
106 out:
107 if (tpg->sid == 1)
108 core_tpg_deregister(&tpg->tpg_se_tpg);
109 kfree(tpg);
110 return -1;
111 }
112
iscsit_release_discovery_tpg(void)113 void iscsit_release_discovery_tpg(void)
114 {
115 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg;
116
117 if (!tpg)
118 return;
119
120 core_tpg_deregister(&tpg->tpg_se_tpg);
121
122 kfree(tpg);
123 iscsit_global->discovery_tpg = NULL;
124 }
125
iscsit_get_tpg_from_np(struct iscsi_tiqn * tiqn,struct iscsi_np * np,struct iscsi_tpg_np ** tpg_np_out)126 struct iscsi_portal_group *iscsit_get_tpg_from_np(
127 struct iscsi_tiqn *tiqn,
128 struct iscsi_np *np,
129 struct iscsi_tpg_np **tpg_np_out)
130 {
131 struct iscsi_portal_group *tpg = NULL;
132 struct iscsi_tpg_np *tpg_np;
133
134 spin_lock(&tiqn->tiqn_tpg_lock);
135 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
136
137 spin_lock(&tpg->tpg_state_lock);
138 if (tpg->tpg_state != TPG_STATE_ACTIVE) {
139 spin_unlock(&tpg->tpg_state_lock);
140 continue;
141 }
142 spin_unlock(&tpg->tpg_state_lock);
143
144 spin_lock(&tpg->tpg_np_lock);
145 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
146 if (tpg_np->tpg_np == np) {
147 *tpg_np_out = tpg_np;
148 kref_get(&tpg_np->tpg_np_kref);
149 spin_unlock(&tpg->tpg_np_lock);
150 spin_unlock(&tiqn->tiqn_tpg_lock);
151 return tpg;
152 }
153 }
154 spin_unlock(&tpg->tpg_np_lock);
155 }
156 spin_unlock(&tiqn->tiqn_tpg_lock);
157
158 return NULL;
159 }
160
iscsit_get_tpg(struct iscsi_portal_group * tpg)161 int iscsit_get_tpg(
162 struct iscsi_portal_group *tpg)
163 {
164 return mutex_lock_interruptible(&tpg->tpg_access_lock);
165 }
166
iscsit_put_tpg(struct iscsi_portal_group * tpg)167 void iscsit_put_tpg(struct iscsi_portal_group *tpg)
168 {
169 mutex_unlock(&tpg->tpg_access_lock);
170 }
171
iscsit_clear_tpg_np_login_thread(struct iscsi_tpg_np * tpg_np,struct iscsi_portal_group * tpg,bool shutdown)172 static void iscsit_clear_tpg_np_login_thread(
173 struct iscsi_tpg_np *tpg_np,
174 struct iscsi_portal_group *tpg,
175 bool shutdown)
176 {
177 if (!tpg_np->tpg_np) {
178 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
179 return;
180 }
181
182 if (shutdown)
183 tpg_np->tpg_np->enabled = false;
184 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
185 }
186
iscsit_clear_tpg_np_login_threads(struct iscsi_portal_group * tpg,bool shutdown)187 static void iscsit_clear_tpg_np_login_threads(
188 struct iscsi_portal_group *tpg,
189 bool shutdown)
190 {
191 struct iscsi_tpg_np *tpg_np;
192
193 spin_lock(&tpg->tpg_np_lock);
194 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
195 if (!tpg_np->tpg_np) {
196 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
197 continue;
198 }
199 spin_unlock(&tpg->tpg_np_lock);
200 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown);
201 spin_lock(&tpg->tpg_np_lock);
202 }
203 spin_unlock(&tpg->tpg_np_lock);
204 }
205
iscsit_tpg_dump_params(struct iscsi_portal_group * tpg)206 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
207 {
208 iscsi_print_params(tpg->param_list);
209 }
210
iscsit_set_default_tpg_attribs(struct iscsi_portal_group * tpg)211 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
212 {
213 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
214
215 a->authentication = TA_AUTHENTICATION;
216 a->login_timeout = TA_LOGIN_TIMEOUT;
217 a->netif_timeout = TA_NETIF_TIMEOUT;
218 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH;
219 a->generate_node_acls = TA_GENERATE_NODE_ACLS;
220 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS;
221 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT;
222 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT;
223 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY;
224 a->default_erl = TA_DEFAULT_ERL;
225 a->t10_pi = TA_DEFAULT_T10_PI;
226 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE;
227 }
228
iscsit_tpg_add_portal_group(struct iscsi_tiqn * tiqn,struct iscsi_portal_group * tpg)229 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
230 {
231 if (tpg->tpg_state != TPG_STATE_FREE) {
232 pr_err("Unable to add iSCSI Target Portal Group: %d"
233 " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
234 return -EEXIST;
235 }
236 iscsit_set_default_tpg_attribs(tpg);
237
238 if (iscsi_create_default_params(&tpg->param_list) < 0)
239 goto err_out;
240
241 tpg->tpg_attrib.tpg = tpg;
242
243 spin_lock(&tpg->tpg_state_lock);
244 tpg->tpg_state = TPG_STATE_INACTIVE;
245 spin_unlock(&tpg->tpg_state_lock);
246
247 spin_lock(&tiqn->tiqn_tpg_lock);
248 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
249 tiqn->tiqn_ntpgs++;
250 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
251 tiqn->tiqn, tpg->tpgt);
252 spin_unlock(&tiqn->tiqn_tpg_lock);
253
254 return 0;
255 err_out:
256 if (tpg->param_list) {
257 iscsi_release_param_list(tpg->param_list);
258 tpg->param_list = NULL;
259 }
260 kfree(tpg);
261 return -ENOMEM;
262 }
263
iscsit_tpg_del_portal_group(struct iscsi_tiqn * tiqn,struct iscsi_portal_group * tpg,int force)264 int iscsit_tpg_del_portal_group(
265 struct iscsi_tiqn *tiqn,
266 struct iscsi_portal_group *tpg,
267 int force)
268 {
269 u8 old_state = tpg->tpg_state;
270
271 spin_lock(&tpg->tpg_state_lock);
272 tpg->tpg_state = TPG_STATE_INACTIVE;
273 spin_unlock(&tpg->tpg_state_lock);
274
275 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
276 pr_err("Unable to delete iSCSI Target Portal Group:"
277 " %hu while active sessions exist, and force=0\n",
278 tpg->tpgt);
279 tpg->tpg_state = old_state;
280 return -EPERM;
281 }
282
283 core_tpg_clear_object_luns(&tpg->tpg_se_tpg);
284
285 if (tpg->param_list) {
286 iscsi_release_param_list(tpg->param_list);
287 tpg->param_list = NULL;
288 }
289
290 core_tpg_deregister(&tpg->tpg_se_tpg);
291
292 spin_lock(&tpg->tpg_state_lock);
293 tpg->tpg_state = TPG_STATE_FREE;
294 spin_unlock(&tpg->tpg_state_lock);
295
296 spin_lock(&tiqn->tiqn_tpg_lock);
297 tiqn->tiqn_ntpgs--;
298 list_del(&tpg->tpg_list);
299 spin_unlock(&tiqn->tiqn_tpg_lock);
300
301 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
302 tiqn->tiqn, tpg->tpgt);
303
304 kfree(tpg);
305 return 0;
306 }
307
iscsit_tpg_enable_portal_group(struct iscsi_portal_group * tpg)308 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
309 {
310 struct iscsi_param *param;
311 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
312 int ret;
313
314 spin_lock(&tpg->tpg_state_lock);
315 if (tpg->tpg_state == TPG_STATE_ACTIVE) {
316 pr_err("iSCSI target portal group: %hu is already"
317 " active, ignoring request.\n", tpg->tpgt);
318 spin_unlock(&tpg->tpg_state_lock);
319 return -EINVAL;
320 }
321 /*
322 * Make sure that AuthMethod does not contain None as an option
323 * unless explictly disabled. Set the default to CHAP if authentication
324 * is enforced (as per default), and remove the NONE option.
325 */
326 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
327 if (!param) {
328 spin_unlock(&tpg->tpg_state_lock);
329 return -EINVAL;
330 }
331
332 if (tpg->tpg_attrib.authentication) {
333 if (!strcmp(param->value, NONE)) {
334 ret = iscsi_update_param_value(param, CHAP);
335 if (ret)
336 goto err;
337 }
338
339 ret = iscsit_ta_authentication(tpg, 1);
340 if (ret < 0)
341 goto err;
342 }
343
344 tpg->tpg_state = TPG_STATE_ACTIVE;
345 spin_unlock(&tpg->tpg_state_lock);
346
347 spin_lock(&tiqn->tiqn_tpg_lock);
348 tiqn->tiqn_active_tpgs++;
349 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
350 tpg->tpgt);
351 spin_unlock(&tiqn->tiqn_tpg_lock);
352
353 return 0;
354
355 err:
356 spin_unlock(&tpg->tpg_state_lock);
357 return ret;
358 }
359
iscsit_tpg_disable_portal_group(struct iscsi_portal_group * tpg,int force)360 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
361 {
362 struct iscsi_tiqn *tiqn;
363 u8 old_state = tpg->tpg_state;
364
365 spin_lock(&tpg->tpg_state_lock);
366 if (tpg->tpg_state == TPG_STATE_INACTIVE) {
367 pr_err("iSCSI Target Portal Group: %hu is already"
368 " inactive, ignoring request.\n", tpg->tpgt);
369 spin_unlock(&tpg->tpg_state_lock);
370 return -EINVAL;
371 }
372 tpg->tpg_state = TPG_STATE_INACTIVE;
373 spin_unlock(&tpg->tpg_state_lock);
374
375 iscsit_clear_tpg_np_login_threads(tpg, false);
376
377 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
378 spin_lock(&tpg->tpg_state_lock);
379 tpg->tpg_state = old_state;
380 spin_unlock(&tpg->tpg_state_lock);
381 pr_err("Unable to disable iSCSI Target Portal Group:"
382 " %hu while active sessions exist, and force=0\n",
383 tpg->tpgt);
384 return -EPERM;
385 }
386
387 tiqn = tpg->tpg_tiqn;
388 if (!tiqn || (tpg == iscsit_global->discovery_tpg))
389 return 0;
390
391 spin_lock(&tiqn->tiqn_tpg_lock);
392 tiqn->tiqn_active_tpgs--;
393 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
394 tpg->tpgt);
395 spin_unlock(&tiqn->tiqn_tpg_lock);
396
397 return 0;
398 }
399
iscsit_tpg_get_node_attrib(struct iscsi_session * sess)400 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
401 struct iscsi_session *sess)
402 {
403 struct se_session *se_sess = sess->se_sess;
404 struct se_node_acl *se_nacl = se_sess->se_node_acl;
405 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
406 se_node_acl);
407
408 return &acl->node_attrib;
409 }
410
iscsit_tpg_locate_child_np(struct iscsi_tpg_np * tpg_np,int network_transport)411 struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
412 struct iscsi_tpg_np *tpg_np,
413 int network_transport)
414 {
415 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
416
417 spin_lock(&tpg_np->tpg_np_parent_lock);
418 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
419 &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
420 if (tpg_np_child->tpg_np->np_network_transport ==
421 network_transport) {
422 spin_unlock(&tpg_np->tpg_np_parent_lock);
423 return tpg_np_child;
424 }
425 }
426 spin_unlock(&tpg_np->tpg_np_parent_lock);
427
428 return NULL;
429 }
430
iscsit_tpg_check_network_portal(struct iscsi_tiqn * tiqn,struct __kernel_sockaddr_storage * sockaddr,int network_transport)431 static bool iscsit_tpg_check_network_portal(
432 struct iscsi_tiqn *tiqn,
433 struct __kernel_sockaddr_storage *sockaddr,
434 int network_transport)
435 {
436 struct iscsi_portal_group *tpg;
437 struct iscsi_tpg_np *tpg_np;
438 struct iscsi_np *np;
439 bool match = false;
440
441 spin_lock(&tiqn->tiqn_tpg_lock);
442 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
443
444 spin_lock(&tpg->tpg_np_lock);
445 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
446 np = tpg_np->tpg_np;
447
448 match = iscsit_check_np_match(sockaddr, np,
449 network_transport);
450 if (match)
451 break;
452 }
453 spin_unlock(&tpg->tpg_np_lock);
454 }
455 spin_unlock(&tiqn->tiqn_tpg_lock);
456
457 return match;
458 }
459
iscsit_tpg_add_network_portal(struct iscsi_portal_group * tpg,struct __kernel_sockaddr_storage * sockaddr,struct iscsi_tpg_np * tpg_np_parent,int network_transport)460 struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
461 struct iscsi_portal_group *tpg,
462 struct __kernel_sockaddr_storage *sockaddr,
463 struct iscsi_tpg_np *tpg_np_parent,
464 int network_transport)
465 {
466 struct iscsi_np *np;
467 struct iscsi_tpg_np *tpg_np;
468
469 if (!tpg_np_parent) {
470 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
471 network_transport)) {
472 pr_err("Network Portal: %pISc already exists on a"
473 " different TPG on %s\n", sockaddr,
474 tpg->tpg_tiqn->tiqn);
475 return ERR_PTR(-EEXIST);
476 }
477 }
478
479 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
480 if (!tpg_np) {
481 pr_err("Unable to allocate memory for"
482 " struct iscsi_tpg_np.\n");
483 return ERR_PTR(-ENOMEM);
484 }
485
486 np = iscsit_add_np(sockaddr, network_transport);
487 if (IS_ERR(np)) {
488 kfree(tpg_np);
489 return ERR_CAST(np);
490 }
491
492 INIT_LIST_HEAD(&tpg_np->tpg_np_list);
493 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
494 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
495 spin_lock_init(&tpg_np->tpg_np_parent_lock);
496 init_completion(&tpg_np->tpg_np_comp);
497 kref_init(&tpg_np->tpg_np_kref);
498 tpg_np->tpg_np = np;
499 tpg_np->tpg = tpg;
500
501 spin_lock(&tpg->tpg_np_lock);
502 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
503 tpg->num_tpg_nps++;
504 if (tpg->tpg_tiqn)
505 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
506 spin_unlock(&tpg->tpg_np_lock);
507
508 if (tpg_np_parent) {
509 tpg_np->tpg_np_parent = tpg_np_parent;
510 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
511 list_add_tail(&tpg_np->tpg_np_child_list,
512 &tpg_np_parent->tpg_np_parent_list);
513 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
514 }
515
516 pr_debug("CORE[%s] - Added Network Portal: %pISc:%hu,%hu on %s\n",
517 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
518 np->np_transport->name);
519
520 return tpg_np;
521 }
522
iscsit_tpg_release_np(struct iscsi_tpg_np * tpg_np,struct iscsi_portal_group * tpg,struct iscsi_np * np)523 static int iscsit_tpg_release_np(
524 struct iscsi_tpg_np *tpg_np,
525 struct iscsi_portal_group *tpg,
526 struct iscsi_np *np)
527 {
528 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
529
530 pr_debug("CORE[%s] - Removed Network Portal: %pISc:%hu,%hu on %s\n",
531 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt,
532 np->np_transport->name);
533
534 tpg_np->tpg_np = NULL;
535 tpg_np->tpg = NULL;
536 kfree(tpg_np);
537 /*
538 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released.
539 */
540 return iscsit_del_np(np);
541 }
542
iscsit_tpg_del_network_portal(struct iscsi_portal_group * tpg,struct iscsi_tpg_np * tpg_np)543 int iscsit_tpg_del_network_portal(
544 struct iscsi_portal_group *tpg,
545 struct iscsi_tpg_np *tpg_np)
546 {
547 struct iscsi_np *np;
548 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
549 int ret = 0;
550
551 np = tpg_np->tpg_np;
552 if (!np) {
553 pr_err("Unable to locate struct iscsi_np from"
554 " struct iscsi_tpg_np\n");
555 return -EINVAL;
556 }
557
558 if (!tpg_np->tpg_np_parent) {
559 /*
560 * We are the parent tpg network portal. Release all of the
561 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent
562 * list first.
563 */
564 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
565 &tpg_np->tpg_np_parent_list,
566 tpg_np_child_list) {
567 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
568 if (ret < 0)
569 pr_err("iscsit_tpg_del_network_portal()"
570 " failed: %d\n", ret);
571 }
572 } else {
573 /*
574 * We are not the parent ISCSI_TCP tpg network portal. Release
575 * our own network portals from the child list.
576 */
577 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
578 list_del(&tpg_np->tpg_np_child_list);
579 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
580 }
581
582 spin_lock(&tpg->tpg_np_lock);
583 list_del(&tpg_np->tpg_np_list);
584 tpg->num_tpg_nps--;
585 if (tpg->tpg_tiqn)
586 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
587 spin_unlock(&tpg->tpg_np_lock);
588
589 return iscsit_tpg_release_np(tpg_np, tpg, np);
590 }
591
iscsit_tpg_set_initiator_node_queue_depth(struct iscsi_portal_group * tpg,unsigned char * initiatorname,u32 queue_depth,int force)592 int iscsit_tpg_set_initiator_node_queue_depth(
593 struct iscsi_portal_group *tpg,
594 unsigned char *initiatorname,
595 u32 queue_depth,
596 int force)
597 {
598 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg,
599 initiatorname, queue_depth, force);
600 }
601
iscsit_ta_authentication(struct iscsi_portal_group * tpg,u32 authentication)602 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
603 {
604 unsigned char buf1[256], buf2[256], *none = NULL;
605 int len;
606 struct iscsi_param *param;
607 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
608
609 if ((authentication != 1) && (authentication != 0)) {
610 pr_err("Illegal value for authentication parameter:"
611 " %u, ignoring request.\n", authentication);
612 return -EINVAL;
613 }
614
615 memset(buf1, 0, sizeof(buf1));
616 memset(buf2, 0, sizeof(buf2));
617
618 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
619 if (!param)
620 return -EINVAL;
621
622 if (authentication) {
623 snprintf(buf1, sizeof(buf1), "%s", param->value);
624 none = strstr(buf1, NONE);
625 if (!none)
626 goto out;
627 if (!strncmp(none + 4, ",", 1)) {
628 if (!strcmp(buf1, none))
629 sprintf(buf2, "%s", none+5);
630 else {
631 none--;
632 *none = '\0';
633 len = sprintf(buf2, "%s", buf1);
634 none += 5;
635 sprintf(buf2 + len, "%s", none);
636 }
637 } else {
638 none--;
639 *none = '\0';
640 sprintf(buf2, "%s", buf1);
641 }
642 if (iscsi_update_param_value(param, buf2) < 0)
643 return -EINVAL;
644 } else {
645 snprintf(buf1, sizeof(buf1), "%s", param->value);
646 none = strstr(buf1, NONE);
647 if (none)
648 goto out;
649 strncat(buf1, ",", strlen(","));
650 strncat(buf1, NONE, strlen(NONE));
651 if (iscsi_update_param_value(param, buf1) < 0)
652 return -EINVAL;
653 }
654
655 out:
656 a->authentication = authentication;
657 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
658 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
659
660 return 0;
661 }
662
iscsit_ta_login_timeout(struct iscsi_portal_group * tpg,u32 login_timeout)663 int iscsit_ta_login_timeout(
664 struct iscsi_portal_group *tpg,
665 u32 login_timeout)
666 {
667 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
668
669 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
670 pr_err("Requested Login Timeout %u larger than maximum"
671 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
672 return -EINVAL;
673 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
674 pr_err("Requested Logout Timeout %u smaller than"
675 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
676 return -EINVAL;
677 }
678
679 a->login_timeout = login_timeout;
680 pr_debug("Set Logout Timeout to %u for Target Portal Group"
681 " %hu\n", a->login_timeout, tpg->tpgt);
682
683 return 0;
684 }
685
iscsit_ta_netif_timeout(struct iscsi_portal_group * tpg,u32 netif_timeout)686 int iscsit_ta_netif_timeout(
687 struct iscsi_portal_group *tpg,
688 u32 netif_timeout)
689 {
690 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
691
692 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
693 pr_err("Requested Network Interface Timeout %u larger"
694 " than maximum %u\n", netif_timeout,
695 TA_NETIF_TIMEOUT_MAX);
696 return -EINVAL;
697 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
698 pr_err("Requested Network Interface Timeout %u smaller"
699 " than minimum %u\n", netif_timeout,
700 TA_NETIF_TIMEOUT_MIN);
701 return -EINVAL;
702 }
703
704 a->netif_timeout = netif_timeout;
705 pr_debug("Set Network Interface Timeout to %u for"
706 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
707
708 return 0;
709 }
710
iscsit_ta_generate_node_acls(struct iscsi_portal_group * tpg,u32 flag)711 int iscsit_ta_generate_node_acls(
712 struct iscsi_portal_group *tpg,
713 u32 flag)
714 {
715 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
716
717 if ((flag != 0) && (flag != 1)) {
718 pr_err("Illegal value %d\n", flag);
719 return -EINVAL;
720 }
721
722 a->generate_node_acls = flag;
723 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
724 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
725
726 if (flag == 1 && a->cache_dynamic_acls == 0) {
727 pr_debug("Explicitly setting cache_dynamic_acls=1 when "
728 "generate_node_acls=1\n");
729 a->cache_dynamic_acls = 1;
730 }
731
732 return 0;
733 }
734
iscsit_ta_default_cmdsn_depth(struct iscsi_portal_group * tpg,u32 tcq_depth)735 int iscsit_ta_default_cmdsn_depth(
736 struct iscsi_portal_group *tpg,
737 u32 tcq_depth)
738 {
739 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
740
741 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
742 pr_err("Requested Default Queue Depth: %u larger"
743 " than maximum %u\n", tcq_depth,
744 TA_DEFAULT_CMDSN_DEPTH_MAX);
745 return -EINVAL;
746 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
747 pr_err("Requested Default Queue Depth: %u smaller"
748 " than minimum %u\n", tcq_depth,
749 TA_DEFAULT_CMDSN_DEPTH_MIN);
750 return -EINVAL;
751 }
752
753 a->default_cmdsn_depth = tcq_depth;
754 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
755 tpg->tpgt, a->default_cmdsn_depth);
756
757 return 0;
758 }
759
iscsit_ta_cache_dynamic_acls(struct iscsi_portal_group * tpg,u32 flag)760 int iscsit_ta_cache_dynamic_acls(
761 struct iscsi_portal_group *tpg,
762 u32 flag)
763 {
764 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
765
766 if ((flag != 0) && (flag != 1)) {
767 pr_err("Illegal value %d\n", flag);
768 return -EINVAL;
769 }
770
771 if (a->generate_node_acls == 1 && flag == 0) {
772 pr_debug("Skipping cache_dynamic_acls=0 when"
773 " generate_node_acls=1\n");
774 return 0;
775 }
776
777 a->cache_dynamic_acls = flag;
778 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
779 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
780 "Enabled" : "Disabled");
781
782 return 0;
783 }
784
iscsit_ta_demo_mode_write_protect(struct iscsi_portal_group * tpg,u32 flag)785 int iscsit_ta_demo_mode_write_protect(
786 struct iscsi_portal_group *tpg,
787 u32 flag)
788 {
789 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
790
791 if ((flag != 0) && (flag != 1)) {
792 pr_err("Illegal value %d\n", flag);
793 return -EINVAL;
794 }
795
796 a->demo_mode_write_protect = flag;
797 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
798 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
799
800 return 0;
801 }
802
iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group * tpg,u32 flag)803 int iscsit_ta_prod_mode_write_protect(
804 struct iscsi_portal_group *tpg,
805 u32 flag)
806 {
807 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
808
809 if ((flag != 0) && (flag != 1)) {
810 pr_err("Illegal value %d\n", flag);
811 return -EINVAL;
812 }
813
814 a->prod_mode_write_protect = flag;
815 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
816 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
817 "ON" : "OFF");
818
819 return 0;
820 }
821
iscsit_ta_demo_mode_discovery(struct iscsi_portal_group * tpg,u32 flag)822 int iscsit_ta_demo_mode_discovery(
823 struct iscsi_portal_group *tpg,
824 u32 flag)
825 {
826 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
827
828 if ((flag != 0) && (flag != 1)) {
829 pr_err("Illegal value %d\n", flag);
830 return -EINVAL;
831 }
832
833 a->demo_mode_discovery = flag;
834 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:"
835 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ?
836 "ON" : "OFF");
837
838 return 0;
839 }
840
iscsit_ta_default_erl(struct iscsi_portal_group * tpg,u32 default_erl)841 int iscsit_ta_default_erl(
842 struct iscsi_portal_group *tpg,
843 u32 default_erl)
844 {
845 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
846
847 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) {
848 pr_err("Illegal value for default_erl: %u\n", default_erl);
849 return -EINVAL;
850 }
851
852 a->default_erl = default_erl;
853 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl);
854
855 return 0;
856 }
857
iscsit_ta_t10_pi(struct iscsi_portal_group * tpg,u32 flag)858 int iscsit_ta_t10_pi(
859 struct iscsi_portal_group *tpg,
860 u32 flag)
861 {
862 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
863
864 if ((flag != 0) && (flag != 1)) {
865 pr_err("Illegal value %d\n", flag);
866 return -EINVAL;
867 }
868
869 a->t10_pi = flag;
870 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:"
871 " %s\n", tpg->tpgt, (a->t10_pi) ?
872 "ON" : "OFF");
873
874 return 0;
875 }
876
iscsit_ta_fabric_prot_type(struct iscsi_portal_group * tpg,u32 prot_type)877 int iscsit_ta_fabric_prot_type(
878 struct iscsi_portal_group *tpg,
879 u32 prot_type)
880 {
881 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
882
883 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) {
884 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type);
885 return -EINVAL;
886 }
887
888 a->fabric_prot_type = prot_type;
889 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n",
890 tpg->tpgt, prot_type);
891
892 return 0;
893 }
894