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
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 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
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(
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;
108 out:
109 if (tpg->sid == 1)
110 core_tpg_deregister(&tpg->tpg_se_tpg);
111 kfree(tpg);
112 return -1;
113 }
114
iscsit_release_discovery_tpg(void)115 void 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
iscsit_get_tpg_from_np(struct iscsi_tiqn * tiqn,struct iscsi_np * np)128 struct 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
iscsit_get_tpg(struct iscsi_portal_group * tpg)160 int 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
iscsit_put_tpg(struct iscsi_portal_group * tpg)169 void iscsit_put_tpg(struct iscsi_portal_group *tpg)
170 {
171 mutex_unlock(&tpg->tpg_access_lock);
172 }
173
iscsit_clear_tpg_np_login_thread(struct iscsi_tpg_np * tpg_np,struct iscsi_portal_group * tpg)174 static 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
iscsit_clear_tpg_np_login_threads(struct iscsi_portal_group * tpg)186 void 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
iscsit_tpg_dump_params(struct iscsi_portal_group * tpg)204 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
205 {
206 iscsi_print_params(tpg->param_list);
207 }
208
iscsit_set_default_tpg_attribs(struct iscsi_portal_group * tpg)209 static 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
iscsit_tpg_add_portal_group(struct iscsi_tiqn * tiqn,struct iscsi_portal_group * tpg)223 int 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;
249 err_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
iscsit_tpg_del_portal_group(struct iscsi_tiqn * tiqn,struct iscsi_portal_group * tpg,int force)258 int 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
iscsit_tpg_enable_portal_group(struct iscsi_portal_group * tpg)302 int 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
iscsit_tpg_disable_portal_group(struct iscsi_portal_group * tpg,int force)349 int 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
iscsit_tpg_get_node_attrib(struct iscsi_session * sess)389 struct 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
iscsit_tpg_locate_child_np(struct iscsi_tpg_np * tpg_np,int network_transport)400 struct 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
iscsit_tpg_add_network_portal(struct iscsi_portal_group * tpg,struct __kernel_sockaddr_storage * sockaddr,char * ip_str,struct iscsi_tpg_np * tpg_np_parent,int network_transport)420 struct 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
iscsit_tpg_release_np(struct iscsi_tpg_np * tpg_np,struct iscsi_portal_group * tpg,struct iscsi_np * np)472 static 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
iscsit_tpg_del_network_portal(struct iscsi_portal_group * tpg,struct iscsi_tpg_np * tpg_np)492 int 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
iscsit_tpg_set_initiator_node_queue_depth(struct iscsi_portal_group * tpg,unsigned char * initiatorname,u32 queue_depth,int force)541 int 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
iscsit_ta_authentication(struct iscsi_portal_group * tpg,u32 authentication)551 int 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
604 out:
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
iscsit_ta_login_timeout(struct iscsi_portal_group * tpg,u32 login_timeout)612 int 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
iscsit_ta_netif_timeout(struct iscsi_portal_group * tpg,u32 netif_timeout)635 int 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
iscsit_ta_generate_node_acls(struct iscsi_portal_group * tpg,u32 flag)660 int 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 if (flag == 1 && a->cache_dynamic_acls == 0) {
676 pr_debug("Explicitly setting cache_dynamic_acls=1 when "
677 "generate_node_acls=1\n");
678 a->cache_dynamic_acls = 1;
679 }
680
681 return 0;
682 }
683
iscsit_ta_default_cmdsn_depth(struct iscsi_portal_group * tpg,u32 tcq_depth)684 int iscsit_ta_default_cmdsn_depth(
685 struct iscsi_portal_group *tpg,
686 u32 tcq_depth)
687 {
688 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
689
690 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
691 pr_err("Requested Default Queue Depth: %u larger"
692 " than maximum %u\n", tcq_depth,
693 TA_DEFAULT_CMDSN_DEPTH_MAX);
694 return -EINVAL;
695 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
696 pr_err("Requested Default Queue Depth: %u smaller"
697 " than minimum %u\n", tcq_depth,
698 TA_DEFAULT_CMDSN_DEPTH_MIN);
699 return -EINVAL;
700 }
701
702 a->default_cmdsn_depth = tcq_depth;
703 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
704 tpg->tpgt, a->default_cmdsn_depth);
705
706 return 0;
707 }
708
iscsit_ta_cache_dynamic_acls(struct iscsi_portal_group * tpg,u32 flag)709 int iscsit_ta_cache_dynamic_acls(
710 struct iscsi_portal_group *tpg,
711 u32 flag)
712 {
713 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
714
715 if ((flag != 0) && (flag != 1)) {
716 pr_err("Illegal value %d\n", flag);
717 return -EINVAL;
718 }
719
720 if (a->generate_node_acls == 1 && flag == 0) {
721 pr_debug("Skipping cache_dynamic_acls=0 when"
722 " generate_node_acls=1\n");
723 return 0;
724 }
725
726 a->cache_dynamic_acls = flag;
727 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
728 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
729 "Enabled" : "Disabled");
730
731 return 0;
732 }
733
iscsit_ta_demo_mode_write_protect(struct iscsi_portal_group * tpg,u32 flag)734 int iscsit_ta_demo_mode_write_protect(
735 struct iscsi_portal_group *tpg,
736 u32 flag)
737 {
738 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
739
740 if ((flag != 0) && (flag != 1)) {
741 pr_err("Illegal value %d\n", flag);
742 return -EINVAL;
743 }
744
745 a->demo_mode_write_protect = flag;
746 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
747 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
748
749 return 0;
750 }
751
iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group * tpg,u32 flag)752 int iscsit_ta_prod_mode_write_protect(
753 struct iscsi_portal_group *tpg,
754 u32 flag)
755 {
756 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
757
758 if ((flag != 0) && (flag != 1)) {
759 pr_err("Illegal value %d\n", flag);
760 return -EINVAL;
761 }
762
763 a->prod_mode_write_protect = flag;
764 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
765 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
766 "ON" : "OFF");
767
768 return 0;
769 }
770