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1/*******************************************************************************
2 * This file contains iSCSI Target Portal Group related functions.
3 *
4 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
5 *
6 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
7 *
8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 ******************************************************************************/
20
21#include <target/target_core_base.h>
22#include <target/target_core_transport.h>
23#include <target/target_core_fabric_ops.h>
24#include <target/target_core_configfs.h>
25#include <target/target_core_tpg.h>
26
27#include "iscsi_target_core.h"
28#include "iscsi_target_erl0.h"
29#include "iscsi_target_login.h"
30#include "iscsi_target_nodeattrib.h"
31#include "iscsi_target_tpg.h"
32#include "iscsi_target_util.h"
33#include "iscsi_target.h"
34#include "iscsi_target_parameters.h"
35
36struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt)
37{
38 struct iscsi_portal_group *tpg;
39
40 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL);
41 if (!tpg) {
42 pr_err("Unable to allocate struct iscsi_portal_group\n");
43 return NULL;
44 }
45
46 tpg->tpgt = tpgt;
47 tpg->tpg_state = TPG_STATE_FREE;
48 tpg->tpg_tiqn = tiqn;
49 INIT_LIST_HEAD(&tpg->tpg_gnp_list);
50 INIT_LIST_HEAD(&tpg->tpg_list);
51 mutex_init(&tpg->tpg_access_lock);
52 mutex_init(&tpg->np_login_lock);
53 spin_lock_init(&tpg->tpg_state_lock);
54 spin_lock_init(&tpg->tpg_np_lock);
55
56 return tpg;
57}
58
59static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *);
60
61int iscsit_load_discovery_tpg(void)
62{
63 struct iscsi_param *param;
64 struct iscsi_portal_group *tpg;
65 int ret;
66
67 tpg = iscsit_alloc_portal_group(NULL, 1);
68 if (!tpg) {
69 pr_err("Unable to allocate struct iscsi_portal_group\n");
70 return -1;
71 }
72
73 ret = core_tpg_register(
74 &lio_target_fabric_configfs->tf_ops,
75 NULL, &tpg->tpg_se_tpg, (void *)tpg,
76 TRANSPORT_TPG_TYPE_DISCOVERY);
77 if (ret < 0) {
78 kfree(tpg);
79 return -1;
80 }
81
82 tpg->sid = 1; /* First Assigned LIO Session ID */
83 iscsit_set_default_tpg_attribs(tpg);
84
85 if (iscsi_create_default_params(&tpg->param_list) < 0)
86 goto out;
87 /*
88 * By default we disable authentication for discovery sessions,
89 * this can be changed with:
90 *
91 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth
92 */
93 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
94 if (!param)
95 goto out;
96
97 if (iscsi_update_param_value(param, "CHAP,None") < 0)
98 goto out;
99
100 tpg->tpg_attrib.authentication = 0;
101
102 spin_lock(&tpg->tpg_state_lock);
103 tpg->tpg_state = TPG_STATE_ACTIVE;
104 spin_unlock(&tpg->tpg_state_lock);
105
106 iscsit_global->discovery_tpg = tpg;
107 pr_debug("CORE[0] - Allocated Discovery TPG\n");
108
109 return 0;
110out:
111 if (tpg->sid == 1)
112 core_tpg_deregister(&tpg->tpg_se_tpg);
113 kfree(tpg);
114 return -1;
115}
116
117void iscsit_release_discovery_tpg(void)
118{
119 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg;
120
121 if (!tpg)
122 return;
123
124 core_tpg_deregister(&tpg->tpg_se_tpg);
125
126 kfree(tpg);
127 iscsit_global->discovery_tpg = NULL;
128}
129
130struct iscsi_portal_group *iscsit_get_tpg_from_np(
131 struct iscsi_tiqn *tiqn,
132 struct iscsi_np *np)
133{
134 struct iscsi_portal_group *tpg = NULL;
135 struct iscsi_tpg_np *tpg_np;
136
137 spin_lock(&tiqn->tiqn_tpg_lock);
138 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
139
140 spin_lock(&tpg->tpg_state_lock);
141 if (tpg->tpg_state == TPG_STATE_FREE) {
142 spin_unlock(&tpg->tpg_state_lock);
143 continue;
144 }
145 spin_unlock(&tpg->tpg_state_lock);
146
147 spin_lock(&tpg->tpg_np_lock);
148 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
149 if (tpg_np->tpg_np == np) {
150 spin_unlock(&tpg->tpg_np_lock);
151 spin_unlock(&tiqn->tiqn_tpg_lock);
152 return tpg;
153 }
154 }
155 spin_unlock(&tpg->tpg_np_lock);
156 }
157 spin_unlock(&tiqn->tiqn_tpg_lock);
158
159 return NULL;
160}
161
162int iscsit_get_tpg(
163 struct iscsi_portal_group *tpg)
164{
165 int ret;
166
167 ret = mutex_lock_interruptible(&tpg->tpg_access_lock);
168 return ((ret != 0) || signal_pending(current)) ? -1 : 0;
169}
170
171void iscsit_put_tpg(struct iscsi_portal_group *tpg)
172{
173 mutex_unlock(&tpg->tpg_access_lock);
174}
175
176static void iscsit_clear_tpg_np_login_thread(
177 struct iscsi_tpg_np *tpg_np,
178 struct iscsi_portal_group *tpg)
179{
180 if (!tpg_np->tpg_np) {
181 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
182 return;
183 }
184
185 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg);
186}
187
188void iscsit_clear_tpg_np_login_threads(
189 struct iscsi_portal_group *tpg)
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);
201 spin_lock(&tpg->tpg_np_lock);
202 }
203 spin_unlock(&tpg->tpg_np_lock);
204}
205
206void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
207{
208 iscsi_print_params(tpg->param_list);
209}
210
211static 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}
224
225int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
226{
227 if (tpg->tpg_state != TPG_STATE_FREE) {
228 pr_err("Unable to add iSCSI Target Portal Group: %d"
229 " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
230 return -EEXIST;
231 }
232 iscsit_set_default_tpg_attribs(tpg);
233
234 if (iscsi_create_default_params(&tpg->param_list) < 0)
235 goto err_out;
236
237 ISCSI_TPG_ATTRIB(tpg)->tpg = tpg;
238
239 spin_lock(&tpg->tpg_state_lock);
240 tpg->tpg_state = TPG_STATE_INACTIVE;
241 spin_unlock(&tpg->tpg_state_lock);
242
243 spin_lock(&tiqn->tiqn_tpg_lock);
244 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
245 tiqn->tiqn_ntpgs++;
246 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
247 tiqn->tiqn, tpg->tpgt);
248 spin_unlock(&tiqn->tiqn_tpg_lock);
249
250 return 0;
251err_out:
252 if (tpg->param_list) {
253 iscsi_release_param_list(tpg->param_list);
254 tpg->param_list = NULL;
255 }
256 kfree(tpg);
257 return -ENOMEM;
258}
259
260int iscsit_tpg_del_portal_group(
261 struct iscsi_tiqn *tiqn,
262 struct iscsi_portal_group *tpg,
263 int force)
264{
265 u8 old_state = tpg->tpg_state;
266
267 spin_lock(&tpg->tpg_state_lock);
268 tpg->tpg_state = TPG_STATE_INACTIVE;
269 spin_unlock(&tpg->tpg_state_lock);
270
271 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
272 pr_err("Unable to delete iSCSI Target Portal Group:"
273 " %hu while active sessions exist, and force=0\n",
274 tpg->tpgt);
275 tpg->tpg_state = old_state;
276 return -EPERM;
277 }
278
279 core_tpg_clear_object_luns(&tpg->tpg_se_tpg);
280
281 if (tpg->param_list) {
282 iscsi_release_param_list(tpg->param_list);
283 tpg->param_list = NULL;
284 }
285
286 core_tpg_deregister(&tpg->tpg_se_tpg);
287
288 spin_lock(&tpg->tpg_state_lock);
289 tpg->tpg_state = TPG_STATE_FREE;
290 spin_unlock(&tpg->tpg_state_lock);
291
292 spin_lock(&tiqn->tiqn_tpg_lock);
293 tiqn->tiqn_ntpgs--;
294 list_del(&tpg->tpg_list);
295 spin_unlock(&tiqn->tiqn_tpg_lock);
296
297 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
298 tiqn->tiqn, tpg->tpgt);
299
300 kfree(tpg);
301 return 0;
302}
303
304int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
305{
306 struct iscsi_param *param;
307 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
308
309 spin_lock(&tpg->tpg_state_lock);
310 if (tpg->tpg_state == TPG_STATE_ACTIVE) {
311 pr_err("iSCSI target portal group: %hu is already"
312 " active, ignoring request.\n", tpg->tpgt);
313 spin_unlock(&tpg->tpg_state_lock);
314 return -EINVAL;
315 }
316 /*
317 * Make sure that AuthMethod does not contain None as an option
318 * unless explictly disabled. Set the default to CHAP if authentication
319 * is enforced (as per default), and remove the NONE option.
320 */
321 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
322 if (!param) {
323 spin_unlock(&tpg->tpg_state_lock);
324 return -ENOMEM;
325 }
326
327 if (ISCSI_TPG_ATTRIB(tpg)->authentication) {
328 if (!strcmp(param->value, NONE))
329 if (iscsi_update_param_value(param, CHAP) < 0) {
330 spin_unlock(&tpg->tpg_state_lock);
331 return -ENOMEM;
332 }
333 if (iscsit_ta_authentication(tpg, 1) < 0) {
334 spin_unlock(&tpg->tpg_state_lock);
335 return -ENOMEM;
336 }
337 }
338
339 tpg->tpg_state = TPG_STATE_ACTIVE;
340 spin_unlock(&tpg->tpg_state_lock);
341
342 spin_lock(&tiqn->tiqn_tpg_lock);
343 tiqn->tiqn_active_tpgs++;
344 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
345 tpg->tpgt);
346 spin_unlock(&tiqn->tiqn_tpg_lock);
347
348 return 0;
349}
350
351int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
352{
353 struct iscsi_tiqn *tiqn;
354 u8 old_state = tpg->tpg_state;
355
356 spin_lock(&tpg->tpg_state_lock);
357 if (tpg->tpg_state == TPG_STATE_INACTIVE) {
358 pr_err("iSCSI Target Portal Group: %hu is already"
359 " inactive, ignoring request.\n", tpg->tpgt);
360 spin_unlock(&tpg->tpg_state_lock);
361 return -EINVAL;
362 }
363 tpg->tpg_state = TPG_STATE_INACTIVE;
364 spin_unlock(&tpg->tpg_state_lock);
365
366 iscsit_clear_tpg_np_login_threads(tpg);
367
368 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
369 spin_lock(&tpg->tpg_state_lock);
370 tpg->tpg_state = old_state;
371 spin_unlock(&tpg->tpg_state_lock);
372 pr_err("Unable to disable iSCSI Target Portal Group:"
373 " %hu while active sessions exist, and force=0\n",
374 tpg->tpgt);
375 return -EPERM;
376 }
377
378 tiqn = tpg->tpg_tiqn;
379 if (!tiqn || (tpg == iscsit_global->discovery_tpg))
380 return 0;
381
382 spin_lock(&tiqn->tiqn_tpg_lock);
383 tiqn->tiqn_active_tpgs--;
384 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
385 tpg->tpgt);
386 spin_unlock(&tiqn->tiqn_tpg_lock);
387
388 return 0;
389}
390
391struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
392 struct iscsi_session *sess)
393{
394 struct se_session *se_sess = sess->se_sess;
395 struct se_node_acl *se_nacl = se_sess->se_node_acl;
396 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
397 se_node_acl);
398
399 return &acl->node_attrib;
400}
401
402struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
403 struct iscsi_tpg_np *tpg_np,
404 int network_transport)
405{
406 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
407
408 spin_lock(&tpg_np->tpg_np_parent_lock);
409 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
410 &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
411 if (tpg_np_child->tpg_np->np_network_transport ==
412 network_transport) {
413 spin_unlock(&tpg_np->tpg_np_parent_lock);
414 return tpg_np_child;
415 }
416 }
417 spin_unlock(&tpg_np->tpg_np_parent_lock);
418
419 return NULL;
420}
421
422struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
423 struct iscsi_portal_group *tpg,
424 struct __kernel_sockaddr_storage *sockaddr,
425 char *ip_str,
426 struct iscsi_tpg_np *tpg_np_parent,
427 int network_transport)
428{
429 struct iscsi_np *np;
430 struct iscsi_tpg_np *tpg_np;
431
432 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
433 if (!tpg_np) {
434 pr_err("Unable to allocate memory for"
435 " struct iscsi_tpg_np.\n");
436 return ERR_PTR(-ENOMEM);
437 }
438
439 np = iscsit_add_np(sockaddr, ip_str, network_transport);
440 if (IS_ERR(np)) {
441 kfree(tpg_np);
442 return ERR_CAST(np);
443 }
444
445 INIT_LIST_HEAD(&tpg_np->tpg_np_list);
446 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
447 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
448 spin_lock_init(&tpg_np->tpg_np_parent_lock);
449 tpg_np->tpg_np = np;
450 tpg_np->tpg = tpg;
451
452 spin_lock(&tpg->tpg_np_lock);
453 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
454 tpg->num_tpg_nps++;
455 if (tpg->tpg_tiqn)
456 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
457 spin_unlock(&tpg->tpg_np_lock);
458
459 if (tpg_np_parent) {
460 tpg_np->tpg_np_parent = tpg_np_parent;
461 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
462 list_add_tail(&tpg_np->tpg_np_child_list,
463 &tpg_np_parent->tpg_np_parent_list);
464 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
465 }
466
467 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
468 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
469 (np->np_network_transport == ISCSI_TCP) ? "TCP" : "SCTP");
470
471 return tpg_np;
472}
473
474static int iscsit_tpg_release_np(
475 struct iscsi_tpg_np *tpg_np,
476 struct iscsi_portal_group *tpg,
477 struct iscsi_np *np)
478{
479 iscsit_clear_tpg_np_login_thread(tpg_np, tpg);
480
481 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
482 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
483 (np->np_network_transport == ISCSI_TCP) ? "TCP" : "SCTP");
484
485 tpg_np->tpg_np = NULL;
486 tpg_np->tpg = NULL;
487 kfree(tpg_np);
488 /*
489 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released.
490 */
491 return iscsit_del_np(np);
492}
493
494int iscsit_tpg_del_network_portal(
495 struct iscsi_portal_group *tpg,
496 struct iscsi_tpg_np *tpg_np)
497{
498 struct iscsi_np *np;
499 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
500 int ret = 0;
501
502 np = tpg_np->tpg_np;
503 if (!np) {
504 pr_err("Unable to locate struct iscsi_np from"
505 " struct iscsi_tpg_np\n");
506 return -EINVAL;
507 }
508
509 if (!tpg_np->tpg_np_parent) {
510 /*
511 * We are the parent tpg network portal. Release all of the
512 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent
513 * list first.
514 */
515 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
516 &tpg_np->tpg_np_parent_list,
517 tpg_np_child_list) {
518 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
519 if (ret < 0)
520 pr_err("iscsit_tpg_del_network_portal()"
521 " failed: %d\n", ret);
522 }
523 } else {
524 /*
525 * We are not the parent ISCSI_TCP tpg network portal. Release
526 * our own network portals from the child list.
527 */
528 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
529 list_del(&tpg_np->tpg_np_child_list);
530 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
531 }
532
533 spin_lock(&tpg->tpg_np_lock);
534 list_del(&tpg_np->tpg_np_list);
535 tpg->num_tpg_nps--;
536 if (tpg->tpg_tiqn)
537 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
538 spin_unlock(&tpg->tpg_np_lock);
539
540 return iscsit_tpg_release_np(tpg_np, tpg, np);
541}
542
543int iscsit_tpg_set_initiator_node_queue_depth(
544 struct iscsi_portal_group *tpg,
545 unsigned char *initiatorname,
546 u32 queue_depth,
547 int force)
548{
549 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg,
550 initiatorname, queue_depth, force);
551}
552
553int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
554{
555 unsigned char buf1[256], buf2[256], *none = NULL;
556 int len;
557 struct iscsi_param *param;
558 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
559
560 if ((authentication != 1) && (authentication != 0)) {
561 pr_err("Illegal value for authentication parameter:"
562 " %u, ignoring request.\n", authentication);
563 return -1;
564 }
565
566 memset(buf1, 0, sizeof(buf1));
567 memset(buf2, 0, sizeof(buf2));
568
569 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
570 if (!param)
571 return -EINVAL;
572
573 if (authentication) {
574 snprintf(buf1, sizeof(buf1), "%s", param->value);
575 none = strstr(buf1, NONE);
576 if (!none)
577 goto out;
578 if (!strncmp(none + 4, ",", 1)) {
579 if (!strcmp(buf1, none))
580 sprintf(buf2, "%s", none+5);
581 else {
582 none--;
583 *none = '\0';
584 len = sprintf(buf2, "%s", buf1);
585 none += 5;
586 sprintf(buf2 + len, "%s", none);
587 }
588 } else {
589 none--;
590 *none = '\0';
591 sprintf(buf2, "%s", buf1);
592 }
593 if (iscsi_update_param_value(param, buf2) < 0)
594 return -EINVAL;
595 } else {
596 snprintf(buf1, sizeof(buf1), "%s", param->value);
597 none = strstr(buf1, NONE);
598 if ((none))
599 goto out;
600 strncat(buf1, ",", strlen(","));
601 strncat(buf1, NONE, strlen(NONE));
602 if (iscsi_update_param_value(param, buf1) < 0)
603 return -EINVAL;
604 }
605
606out:
607 a->authentication = authentication;
608 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
609 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
610
611 return 0;
612}
613
614int iscsit_ta_login_timeout(
615 struct iscsi_portal_group *tpg,
616 u32 login_timeout)
617{
618 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
619
620 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
621 pr_err("Requested Login Timeout %u larger than maximum"
622 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
623 return -EINVAL;
624 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
625 pr_err("Requested Logout Timeout %u smaller than"
626 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
627 return -EINVAL;
628 }
629
630 a->login_timeout = login_timeout;
631 pr_debug("Set Logout Timeout to %u for Target Portal Group"
632 " %hu\n", a->login_timeout, tpg->tpgt);
633
634 return 0;
635}
636
637int iscsit_ta_netif_timeout(
638 struct iscsi_portal_group *tpg,
639 u32 netif_timeout)
640{
641 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
642
643 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
644 pr_err("Requested Network Interface Timeout %u larger"
645 " than maximum %u\n", netif_timeout,
646 TA_NETIF_TIMEOUT_MAX);
647 return -EINVAL;
648 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
649 pr_err("Requested Network Interface Timeout %u smaller"
650 " than minimum %u\n", netif_timeout,
651 TA_NETIF_TIMEOUT_MIN);
652 return -EINVAL;
653 }
654
655 a->netif_timeout = netif_timeout;
656 pr_debug("Set Network Interface Timeout to %u for"
657 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
658
659 return 0;
660}
661
662int iscsit_ta_generate_node_acls(
663 struct iscsi_portal_group *tpg,
664 u32 flag)
665{
666 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
667
668 if ((flag != 0) && (flag != 1)) {
669 pr_err("Illegal value %d\n", flag);
670 return -EINVAL;
671 }
672
673 a->generate_node_acls = flag;
674 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
675 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
676
677 return 0;
678}
679
680int iscsit_ta_default_cmdsn_depth(
681 struct iscsi_portal_group *tpg,
682 u32 tcq_depth)
683{
684 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
685
686 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
687 pr_err("Requested Default Queue Depth: %u larger"
688 " than maximum %u\n", tcq_depth,
689 TA_DEFAULT_CMDSN_DEPTH_MAX);
690 return -EINVAL;
691 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
692 pr_err("Requested Default Queue Depth: %u smaller"
693 " than minimum %u\n", tcq_depth,
694 TA_DEFAULT_CMDSN_DEPTH_MIN);
695 return -EINVAL;
696 }
697
698 a->default_cmdsn_depth = tcq_depth;
699 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
700 tpg->tpgt, a->default_cmdsn_depth);
701
702 return 0;
703}
704
705int iscsit_ta_cache_dynamic_acls(
706 struct iscsi_portal_group *tpg,
707 u32 flag)
708{
709 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
710
711 if ((flag != 0) && (flag != 1)) {
712 pr_err("Illegal value %d\n", flag);
713 return -EINVAL;
714 }
715
716 a->cache_dynamic_acls = flag;
717 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
718 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
719 "Enabled" : "Disabled");
720
721 return 0;
722}
723
724int iscsit_ta_demo_mode_write_protect(
725 struct iscsi_portal_group *tpg,
726 u32 flag)
727{
728 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
729
730 if ((flag != 0) && (flag != 1)) {
731 pr_err("Illegal value %d\n", flag);
732 return -EINVAL;
733 }
734
735 a->demo_mode_write_protect = flag;
736 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
737 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
738
739 return 0;
740}
741
742int iscsit_ta_prod_mode_write_protect(
743 struct iscsi_portal_group *tpg,
744 u32 flag)
745{
746 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
747
748 if ((flag != 0) && (flag != 1)) {
749 pr_err("Illegal value %d\n", flag);
750 return -EINVAL;
751 }
752
753 a->prod_mode_write_protect = flag;
754 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
755 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
756 "ON" : "OFF");
757
758 return 0;
759}
1/*******************************************************************************
2 * This file contains iSCSI Target Portal Group related functions.
3 *
4 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
5 *
6 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
7 *
8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 ******************************************************************************/
20
21#include <target/target_core_base.h>
22#include <target/target_core_fabric.h>
23#include <target/target_core_configfs.h>
24
25#include "iscsi_target_core.h"
26#include "iscsi_target_erl0.h"
27#include "iscsi_target_login.h"
28#include "iscsi_target_nodeattrib.h"
29#include "iscsi_target_tpg.h"
30#include "iscsi_target_util.h"
31#include "iscsi_target.h"
32#include "iscsi_target_parameters.h"
33
34struct 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 mutex_init(&tpg->np_login_lock);
51 spin_lock_init(&tpg->tpg_state_lock);
52 spin_lock_init(&tpg->tpg_np_lock);
53
54 return tpg;
55}
56
57static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *);
58
59int 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(
72 &lio_target_fabric_configfs->tf_ops,
73 NULL, &tpg->tpg_se_tpg, tpg,
74 TRANSPORT_TPG_TYPE_DISCOVERY);
75 if (ret < 0) {
76 kfree(tpg);
77 return -1;
78 }
79
80 tpg->sid = 1; /* First Assigned LIO Session ID */
81 iscsit_set_default_tpg_attribs(tpg);
82
83 if (iscsi_create_default_params(&tpg->param_list) < 0)
84 goto out;
85 /*
86 * By default we disable authentication for discovery sessions,
87 * this can be changed with:
88 *
89 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth
90 */
91 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
92 if (!param)
93 goto out;
94
95 if (iscsi_update_param_value(param, "CHAP,None") < 0)
96 goto out;
97
98 tpg->tpg_attrib.authentication = 0;
99
100 spin_lock(&tpg->tpg_state_lock);
101 tpg->tpg_state = TPG_STATE_ACTIVE;
102 spin_unlock(&tpg->tpg_state_lock);
103
104 iscsit_global->discovery_tpg = tpg;
105 pr_debug("CORE[0] - Allocated Discovery TPG\n");
106
107 return 0;
108out:
109 if (tpg->sid == 1)
110 core_tpg_deregister(&tpg->tpg_se_tpg);
111 kfree(tpg);
112 return -1;
113}
114
115void iscsit_release_discovery_tpg(void)
116{
117 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg;
118
119 if (!tpg)
120 return;
121
122 core_tpg_deregister(&tpg->tpg_se_tpg);
123
124 kfree(tpg);
125 iscsit_global->discovery_tpg = NULL;
126}
127
128struct iscsi_portal_group *iscsit_get_tpg_from_np(
129 struct iscsi_tiqn *tiqn,
130 struct iscsi_np *np)
131{
132 struct iscsi_portal_group *tpg = NULL;
133 struct iscsi_tpg_np *tpg_np;
134
135 spin_lock(&tiqn->tiqn_tpg_lock);
136 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
137
138 spin_lock(&tpg->tpg_state_lock);
139 if (tpg->tpg_state == TPG_STATE_FREE) {
140 spin_unlock(&tpg->tpg_state_lock);
141 continue;
142 }
143 spin_unlock(&tpg->tpg_state_lock);
144
145 spin_lock(&tpg->tpg_np_lock);
146 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
147 if (tpg_np->tpg_np == np) {
148 spin_unlock(&tpg->tpg_np_lock);
149 spin_unlock(&tiqn->tiqn_tpg_lock);
150 return tpg;
151 }
152 }
153 spin_unlock(&tpg->tpg_np_lock);
154 }
155 spin_unlock(&tiqn->tiqn_tpg_lock);
156
157 return NULL;
158}
159
160int iscsit_get_tpg(
161 struct iscsi_portal_group *tpg)
162{
163 int ret;
164
165 ret = mutex_lock_interruptible(&tpg->tpg_access_lock);
166 return ((ret != 0) || signal_pending(current)) ? -1 : 0;
167}
168
169void iscsit_put_tpg(struct iscsi_portal_group *tpg)
170{
171 mutex_unlock(&tpg->tpg_access_lock);
172}
173
174static void iscsit_clear_tpg_np_login_thread(
175 struct iscsi_tpg_np *tpg_np,
176 struct iscsi_portal_group *tpg)
177{
178 if (!tpg_np->tpg_np) {
179 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
180 return;
181 }
182
183 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg);
184}
185
186void iscsit_clear_tpg_np_login_threads(
187 struct iscsi_portal_group *tpg)
188{
189 struct iscsi_tpg_np *tpg_np;
190
191 spin_lock(&tpg->tpg_np_lock);
192 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
193 if (!tpg_np->tpg_np) {
194 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
195 continue;
196 }
197 spin_unlock(&tpg->tpg_np_lock);
198 iscsit_clear_tpg_np_login_thread(tpg_np, tpg);
199 spin_lock(&tpg->tpg_np_lock);
200 }
201 spin_unlock(&tpg->tpg_np_lock);
202}
203
204void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
205{
206 iscsi_print_params(tpg->param_list);
207}
208
209static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
210{
211 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
212
213 a->authentication = TA_AUTHENTICATION;
214 a->login_timeout = TA_LOGIN_TIMEOUT;
215 a->netif_timeout = TA_NETIF_TIMEOUT;
216 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH;
217 a->generate_node_acls = TA_GENERATE_NODE_ACLS;
218 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS;
219 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT;
220 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT;
221}
222
223int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
224{
225 if (tpg->tpg_state != TPG_STATE_FREE) {
226 pr_err("Unable to add iSCSI Target Portal Group: %d"
227 " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
228 return -EEXIST;
229 }
230 iscsit_set_default_tpg_attribs(tpg);
231
232 if (iscsi_create_default_params(&tpg->param_list) < 0)
233 goto err_out;
234
235 ISCSI_TPG_ATTRIB(tpg)->tpg = tpg;
236
237 spin_lock(&tpg->tpg_state_lock);
238 tpg->tpg_state = TPG_STATE_INACTIVE;
239 spin_unlock(&tpg->tpg_state_lock);
240
241 spin_lock(&tiqn->tiqn_tpg_lock);
242 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
243 tiqn->tiqn_ntpgs++;
244 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
245 tiqn->tiqn, tpg->tpgt);
246 spin_unlock(&tiqn->tiqn_tpg_lock);
247
248 return 0;
249err_out:
250 if (tpg->param_list) {
251 iscsi_release_param_list(tpg->param_list);
252 tpg->param_list = NULL;
253 }
254 kfree(tpg);
255 return -ENOMEM;
256}
257
258int iscsit_tpg_del_portal_group(
259 struct iscsi_tiqn *tiqn,
260 struct iscsi_portal_group *tpg,
261 int force)
262{
263 u8 old_state = tpg->tpg_state;
264
265 spin_lock(&tpg->tpg_state_lock);
266 tpg->tpg_state = TPG_STATE_INACTIVE;
267 spin_unlock(&tpg->tpg_state_lock);
268
269 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
270 pr_err("Unable to delete iSCSI Target Portal Group:"
271 " %hu while active sessions exist, and force=0\n",
272 tpg->tpgt);
273 tpg->tpg_state = old_state;
274 return -EPERM;
275 }
276
277 core_tpg_clear_object_luns(&tpg->tpg_se_tpg);
278
279 if (tpg->param_list) {
280 iscsi_release_param_list(tpg->param_list);
281 tpg->param_list = NULL;
282 }
283
284 core_tpg_deregister(&tpg->tpg_se_tpg);
285
286 spin_lock(&tpg->tpg_state_lock);
287 tpg->tpg_state = TPG_STATE_FREE;
288 spin_unlock(&tpg->tpg_state_lock);
289
290 spin_lock(&tiqn->tiqn_tpg_lock);
291 tiqn->tiqn_ntpgs--;
292 list_del(&tpg->tpg_list);
293 spin_unlock(&tiqn->tiqn_tpg_lock);
294
295 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
296 tiqn->tiqn, tpg->tpgt);
297
298 kfree(tpg);
299 return 0;
300}
301
302int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
303{
304 struct iscsi_param *param;
305 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
306
307 spin_lock(&tpg->tpg_state_lock);
308 if (tpg->tpg_state == TPG_STATE_ACTIVE) {
309 pr_err("iSCSI target portal group: %hu is already"
310 " active, ignoring request.\n", tpg->tpgt);
311 spin_unlock(&tpg->tpg_state_lock);
312 return -EINVAL;
313 }
314 /*
315 * Make sure that AuthMethod does not contain None as an option
316 * unless explictly disabled. Set the default to CHAP if authentication
317 * is enforced (as per default), and remove the NONE option.
318 */
319 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
320 if (!param) {
321 spin_unlock(&tpg->tpg_state_lock);
322 return -ENOMEM;
323 }
324
325 if (ISCSI_TPG_ATTRIB(tpg)->authentication) {
326 if (!strcmp(param->value, NONE))
327 if (iscsi_update_param_value(param, CHAP) < 0) {
328 spin_unlock(&tpg->tpg_state_lock);
329 return -ENOMEM;
330 }
331 if (iscsit_ta_authentication(tpg, 1) < 0) {
332 spin_unlock(&tpg->tpg_state_lock);
333 return -ENOMEM;
334 }
335 }
336
337 tpg->tpg_state = TPG_STATE_ACTIVE;
338 spin_unlock(&tpg->tpg_state_lock);
339
340 spin_lock(&tiqn->tiqn_tpg_lock);
341 tiqn->tiqn_active_tpgs++;
342 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
343 tpg->tpgt);
344 spin_unlock(&tiqn->tiqn_tpg_lock);
345
346 return 0;
347}
348
349int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
350{
351 struct iscsi_tiqn *tiqn;
352 u8 old_state = tpg->tpg_state;
353
354 spin_lock(&tpg->tpg_state_lock);
355 if (tpg->tpg_state == TPG_STATE_INACTIVE) {
356 pr_err("iSCSI Target Portal Group: %hu is already"
357 " inactive, ignoring request.\n", tpg->tpgt);
358 spin_unlock(&tpg->tpg_state_lock);
359 return -EINVAL;
360 }
361 tpg->tpg_state = TPG_STATE_INACTIVE;
362 spin_unlock(&tpg->tpg_state_lock);
363
364 iscsit_clear_tpg_np_login_threads(tpg);
365
366 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
367 spin_lock(&tpg->tpg_state_lock);
368 tpg->tpg_state = old_state;
369 spin_unlock(&tpg->tpg_state_lock);
370 pr_err("Unable to disable iSCSI Target Portal Group:"
371 " %hu while active sessions exist, and force=0\n",
372 tpg->tpgt);
373 return -EPERM;
374 }
375
376 tiqn = tpg->tpg_tiqn;
377 if (!tiqn || (tpg == iscsit_global->discovery_tpg))
378 return 0;
379
380 spin_lock(&tiqn->tiqn_tpg_lock);
381 tiqn->tiqn_active_tpgs--;
382 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
383 tpg->tpgt);
384 spin_unlock(&tiqn->tiqn_tpg_lock);
385
386 return 0;
387}
388
389struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
390 struct iscsi_session *sess)
391{
392 struct se_session *se_sess = sess->se_sess;
393 struct se_node_acl *se_nacl = se_sess->se_node_acl;
394 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
395 se_node_acl);
396
397 return &acl->node_attrib;
398}
399
400struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
401 struct iscsi_tpg_np *tpg_np,
402 int network_transport)
403{
404 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
405
406 spin_lock(&tpg_np->tpg_np_parent_lock);
407 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
408 &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
409 if (tpg_np_child->tpg_np->np_network_transport ==
410 network_transport) {
411 spin_unlock(&tpg_np->tpg_np_parent_lock);
412 return tpg_np_child;
413 }
414 }
415 spin_unlock(&tpg_np->tpg_np_parent_lock);
416
417 return NULL;
418}
419
420struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
421 struct iscsi_portal_group *tpg,
422 struct __kernel_sockaddr_storage *sockaddr,
423 char *ip_str,
424 struct iscsi_tpg_np *tpg_np_parent,
425 int network_transport)
426{
427 struct iscsi_np *np;
428 struct iscsi_tpg_np *tpg_np;
429
430 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
431 if (!tpg_np) {
432 pr_err("Unable to allocate memory for"
433 " struct iscsi_tpg_np.\n");
434 return ERR_PTR(-ENOMEM);
435 }
436
437 np = iscsit_add_np(sockaddr, ip_str, network_transport);
438 if (IS_ERR(np)) {
439 kfree(tpg_np);
440 return ERR_CAST(np);
441 }
442
443 INIT_LIST_HEAD(&tpg_np->tpg_np_list);
444 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
445 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
446 spin_lock_init(&tpg_np->tpg_np_parent_lock);
447 tpg_np->tpg_np = np;
448 tpg_np->tpg = tpg;
449
450 spin_lock(&tpg->tpg_np_lock);
451 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
452 tpg->num_tpg_nps++;
453 if (tpg->tpg_tiqn)
454 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
455 spin_unlock(&tpg->tpg_np_lock);
456
457 if (tpg_np_parent) {
458 tpg_np->tpg_np_parent = tpg_np_parent;
459 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
460 list_add_tail(&tpg_np->tpg_np_child_list,
461 &tpg_np_parent->tpg_np_parent_list);
462 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
463 }
464
465 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
466 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
467 (np->np_network_transport == ISCSI_TCP) ? "TCP" : "SCTP");
468
469 return tpg_np;
470}
471
472static int iscsit_tpg_release_np(
473 struct iscsi_tpg_np *tpg_np,
474 struct iscsi_portal_group *tpg,
475 struct iscsi_np *np)
476{
477 iscsit_clear_tpg_np_login_thread(tpg_np, tpg);
478
479 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
480 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
481 (np->np_network_transport == ISCSI_TCP) ? "TCP" : "SCTP");
482
483 tpg_np->tpg_np = NULL;
484 tpg_np->tpg = NULL;
485 kfree(tpg_np);
486 /*
487 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released.
488 */
489 return iscsit_del_np(np);
490}
491
492int iscsit_tpg_del_network_portal(
493 struct iscsi_portal_group *tpg,
494 struct iscsi_tpg_np *tpg_np)
495{
496 struct iscsi_np *np;
497 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
498 int ret = 0;
499
500 np = tpg_np->tpg_np;
501 if (!np) {
502 pr_err("Unable to locate struct iscsi_np from"
503 " struct iscsi_tpg_np\n");
504 return -EINVAL;
505 }
506
507 if (!tpg_np->tpg_np_parent) {
508 /*
509 * We are the parent tpg network portal. Release all of the
510 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent
511 * list first.
512 */
513 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
514 &tpg_np->tpg_np_parent_list,
515 tpg_np_child_list) {
516 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
517 if (ret < 0)
518 pr_err("iscsit_tpg_del_network_portal()"
519 " failed: %d\n", ret);
520 }
521 } else {
522 /*
523 * We are not the parent ISCSI_TCP tpg network portal. Release
524 * our own network portals from the child list.
525 */
526 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
527 list_del(&tpg_np->tpg_np_child_list);
528 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
529 }
530
531 spin_lock(&tpg->tpg_np_lock);
532 list_del(&tpg_np->tpg_np_list);
533 tpg->num_tpg_nps--;
534 if (tpg->tpg_tiqn)
535 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
536 spin_unlock(&tpg->tpg_np_lock);
537
538 return iscsit_tpg_release_np(tpg_np, tpg, np);
539}
540
541int iscsit_tpg_set_initiator_node_queue_depth(
542 struct iscsi_portal_group *tpg,
543 unsigned char *initiatorname,
544 u32 queue_depth,
545 int force)
546{
547 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg,
548 initiatorname, queue_depth, force);
549}
550
551int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
552{
553 unsigned char buf1[256], buf2[256], *none = NULL;
554 int len;
555 struct iscsi_param *param;
556 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
557
558 if ((authentication != 1) && (authentication != 0)) {
559 pr_err("Illegal value for authentication parameter:"
560 " %u, ignoring request.\n", authentication);
561 return -1;
562 }
563
564 memset(buf1, 0, sizeof(buf1));
565 memset(buf2, 0, sizeof(buf2));
566
567 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
568 if (!param)
569 return -EINVAL;
570
571 if (authentication) {
572 snprintf(buf1, sizeof(buf1), "%s", param->value);
573 none = strstr(buf1, NONE);
574 if (!none)
575 goto out;
576 if (!strncmp(none + 4, ",", 1)) {
577 if (!strcmp(buf1, none))
578 sprintf(buf2, "%s", none+5);
579 else {
580 none--;
581 *none = '\0';
582 len = sprintf(buf2, "%s", buf1);
583 none += 5;
584 sprintf(buf2 + len, "%s", none);
585 }
586 } else {
587 none--;
588 *none = '\0';
589 sprintf(buf2, "%s", buf1);
590 }
591 if (iscsi_update_param_value(param, buf2) < 0)
592 return -EINVAL;
593 } else {
594 snprintf(buf1, sizeof(buf1), "%s", param->value);
595 none = strstr(buf1, NONE);
596 if ((none))
597 goto out;
598 strncat(buf1, ",", strlen(","));
599 strncat(buf1, NONE, strlen(NONE));
600 if (iscsi_update_param_value(param, buf1) < 0)
601 return -EINVAL;
602 }
603
604out:
605 a->authentication = authentication;
606 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
607 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
608
609 return 0;
610}
611
612int iscsit_ta_login_timeout(
613 struct iscsi_portal_group *tpg,
614 u32 login_timeout)
615{
616 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
617
618 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
619 pr_err("Requested Login Timeout %u larger than maximum"
620 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
621 return -EINVAL;
622 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
623 pr_err("Requested Logout Timeout %u smaller than"
624 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
625 return -EINVAL;
626 }
627
628 a->login_timeout = login_timeout;
629 pr_debug("Set Logout Timeout to %u for Target Portal Group"
630 " %hu\n", a->login_timeout, tpg->tpgt);
631
632 return 0;
633}
634
635int iscsit_ta_netif_timeout(
636 struct iscsi_portal_group *tpg,
637 u32 netif_timeout)
638{
639 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
640
641 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
642 pr_err("Requested Network Interface Timeout %u larger"
643 " than maximum %u\n", netif_timeout,
644 TA_NETIF_TIMEOUT_MAX);
645 return -EINVAL;
646 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
647 pr_err("Requested Network Interface Timeout %u smaller"
648 " than minimum %u\n", netif_timeout,
649 TA_NETIF_TIMEOUT_MIN);
650 return -EINVAL;
651 }
652
653 a->netif_timeout = netif_timeout;
654 pr_debug("Set Network Interface Timeout to %u for"
655 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
656
657 return 0;
658}
659
660int iscsit_ta_generate_node_acls(
661 struct iscsi_portal_group *tpg,
662 u32 flag)
663{
664 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
665
666 if ((flag != 0) && (flag != 1)) {
667 pr_err("Illegal value %d\n", flag);
668 return -EINVAL;
669 }
670
671 a->generate_node_acls = flag;
672 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
673 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
674
675 return 0;
676}
677
678int iscsit_ta_default_cmdsn_depth(
679 struct iscsi_portal_group *tpg,
680 u32 tcq_depth)
681{
682 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
683
684 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
685 pr_err("Requested Default Queue Depth: %u larger"
686 " than maximum %u\n", tcq_depth,
687 TA_DEFAULT_CMDSN_DEPTH_MAX);
688 return -EINVAL;
689 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
690 pr_err("Requested Default Queue Depth: %u smaller"
691 " than minimum %u\n", tcq_depth,
692 TA_DEFAULT_CMDSN_DEPTH_MIN);
693 return -EINVAL;
694 }
695
696 a->default_cmdsn_depth = tcq_depth;
697 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
698 tpg->tpgt, a->default_cmdsn_depth);
699
700 return 0;
701}
702
703int iscsit_ta_cache_dynamic_acls(
704 struct iscsi_portal_group *tpg,
705 u32 flag)
706{
707 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
708
709 if ((flag != 0) && (flag != 1)) {
710 pr_err("Illegal value %d\n", flag);
711 return -EINVAL;
712 }
713
714 a->cache_dynamic_acls = flag;
715 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
716 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
717 "Enabled" : "Disabled");
718
719 return 0;
720}
721
722int iscsit_ta_demo_mode_write_protect(
723 struct iscsi_portal_group *tpg,
724 u32 flag)
725{
726 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
727
728 if ((flag != 0) && (flag != 1)) {
729 pr_err("Illegal value %d\n", flag);
730 return -EINVAL;
731 }
732
733 a->demo_mode_write_protect = flag;
734 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
735 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
736
737 return 0;
738}
739
740int iscsit_ta_prod_mode_write_protect(
741 struct iscsi_portal_group *tpg,
742 u32 flag)
743{
744 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
745
746 if ((flag != 0) && (flag != 1)) {
747 pr_err("Illegal value %d\n", flag);
748 return -EINVAL;
749 }
750
751 a->prod_mode_write_protect = flag;
752 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
753 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
754 "ON" : "OFF");
755
756 return 0;
757}