1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*******************************************************************************
3 * This file contains iSCSI Target Portal Group related functions.
4 *
5 * (c) Copyright 2007-2013 Datera, Inc.
6 *
7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
8 *
9 ******************************************************************************/
10
11 #include <linux/slab.h>
12 #include <target/target_core_base.h>
13 #include <target/target_core_fabric.h>
14 #include <target/iscsi/iscsi_target_core.h>
15 #include "iscsi_target_erl0.h"
16 #include "iscsi_target_login.h"
17 #include "iscsi_target_nodeattrib.h"
18 #include "iscsi_target_tpg.h"
19 #include "iscsi_target_util.h"
20 #include "iscsi_target.h"
21 #include "iscsi_target_parameters.h"
22
23 #include <target/iscsi/iscsi_transport.h>
24
iscsit_alloc_portal_group(struct iscsi_tiqn * tiqn,u16 tpgt)25 struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt)
26 {
27 struct iscsi_portal_group *tpg;
28
29 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL);
30 if (!tpg) {
31 pr_err("Unable to allocate struct iscsi_portal_group\n");
32 return NULL;
33 }
34
35 tpg->tpgt = tpgt;
36 tpg->tpg_state = TPG_STATE_FREE;
37 tpg->tpg_tiqn = tiqn;
38 INIT_LIST_HEAD(&tpg->tpg_gnp_list);
39 INIT_LIST_HEAD(&tpg->tpg_list);
40 mutex_init(&tpg->tpg_access_lock);
41 sema_init(&tpg->np_login_sem, 1);
42 spin_lock_init(&tpg->tpg_state_lock);
43 spin_lock_init(&tpg->tpg_np_lock);
44
45 return tpg;
46 }
47
48 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *);
49
iscsit_load_discovery_tpg(void)50 int iscsit_load_discovery_tpg(void)
51 {
52 struct iscsi_param *param;
53 struct iscsi_portal_group *tpg;
54 int ret;
55
56 tpg = iscsit_alloc_portal_group(NULL, 1);
57 if (!tpg) {
58 pr_err("Unable to allocate struct iscsi_portal_group\n");
59 return -1;
60 }
61 /*
62 * Save iscsi_ops pointer for special case discovery TPG that
63 * doesn't exist as se_wwn->wwn_group within configfs.
64 */
65 tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops;
66 ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1);
67 if (ret < 0) {
68 kfree(tpg);
69 return -1;
70 }
71
72 tpg->sid = 1; /* First Assigned LIO Session ID */
73 iscsit_set_default_tpg_attribs(tpg);
74
75 if (iscsi_create_default_params(&tpg->param_list) < 0)
76 goto out;
77 /*
78 * By default we disable authentication for discovery sessions,
79 * this can be changed with:
80 *
81 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth
82 */
83 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
84 if (!param)
85 goto free_pl_out;
86
87 if (iscsi_update_param_value(param, "CHAP,None") < 0)
88 goto free_pl_out;
89
90 tpg->tpg_attrib.authentication = 0;
91
92 spin_lock(&tpg->tpg_state_lock);
93 tpg->tpg_state = TPG_STATE_ACTIVE;
94 spin_unlock(&tpg->tpg_state_lock);
95
96 iscsit_global->discovery_tpg = tpg;
97 pr_debug("CORE[0] - Allocated Discovery TPG\n");
98
99 return 0;
100 free_pl_out:
101 iscsi_release_param_list(tpg->param_list);
102 out:
103 if (tpg->sid == 1)
104 core_tpg_deregister(&tpg->tpg_se_tpg);
105 kfree(tpg);
106 return -1;
107 }
108
iscsit_release_discovery_tpg(void)109 void iscsit_release_discovery_tpg(void)
110 {
111 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg;
112
113 if (!tpg)
114 return;
115
116 iscsi_release_param_list(tpg->param_list);
117 core_tpg_deregister(&tpg->tpg_se_tpg);
118
119 kfree(tpg);
120 iscsit_global->discovery_tpg = NULL;
121 }
122
iscsit_get_tpg_from_np(struct iscsi_tiqn * tiqn,struct iscsi_np * np,struct iscsi_tpg_np ** tpg_np_out)123 struct iscsi_portal_group *iscsit_get_tpg_from_np(
124 struct iscsi_tiqn *tiqn,
125 struct iscsi_np *np,
126 struct iscsi_tpg_np **tpg_np_out)
127 {
128 struct iscsi_portal_group *tpg = NULL;
129 struct iscsi_tpg_np *tpg_np;
130
131 spin_lock(&tiqn->tiqn_tpg_lock);
132 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
133
134 spin_lock(&tpg->tpg_state_lock);
135 if (tpg->tpg_state != TPG_STATE_ACTIVE) {
136 spin_unlock(&tpg->tpg_state_lock);
137 continue;
138 }
139 spin_unlock(&tpg->tpg_state_lock);
140
141 spin_lock(&tpg->tpg_np_lock);
142 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
143 if (tpg_np->tpg_np == np) {
144 *tpg_np_out = tpg_np;
145 kref_get(&tpg_np->tpg_np_kref);
146 spin_unlock(&tpg->tpg_np_lock);
147 spin_unlock(&tiqn->tiqn_tpg_lock);
148 return tpg;
149 }
150 }
151 spin_unlock(&tpg->tpg_np_lock);
152 }
153 spin_unlock(&tiqn->tiqn_tpg_lock);
154
155 return NULL;
156 }
157
iscsit_get_tpg(struct iscsi_portal_group * tpg)158 int iscsit_get_tpg(
159 struct iscsi_portal_group *tpg)
160 {
161 return mutex_lock_interruptible(&tpg->tpg_access_lock);
162 }
163
iscsit_put_tpg(struct iscsi_portal_group * tpg)164 void iscsit_put_tpg(struct iscsi_portal_group *tpg)
165 {
166 mutex_unlock(&tpg->tpg_access_lock);
167 }
168
iscsit_clear_tpg_np_login_thread(struct iscsi_tpg_np * tpg_np,struct iscsi_portal_group * tpg,bool shutdown)169 static void iscsit_clear_tpg_np_login_thread(
170 struct iscsi_tpg_np *tpg_np,
171 struct iscsi_portal_group *tpg,
172 bool shutdown)
173 {
174 if (!tpg_np->tpg_np) {
175 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
176 return;
177 }
178
179 if (shutdown)
180 tpg_np->tpg_np->enabled = false;
181 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
182 }
183
iscsit_clear_tpg_np_login_threads(struct iscsi_portal_group * tpg,bool shutdown)184 static void iscsit_clear_tpg_np_login_threads(
185 struct iscsi_portal_group *tpg,
186 bool shutdown)
187 {
188 struct iscsi_tpg_np *tpg_np;
189
190 spin_lock(&tpg->tpg_np_lock);
191 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
192 if (!tpg_np->tpg_np) {
193 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
194 continue;
195 }
196 spin_unlock(&tpg->tpg_np_lock);
197 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown);
198 spin_lock(&tpg->tpg_np_lock);
199 }
200 spin_unlock(&tpg->tpg_np_lock);
201 }
202
iscsit_tpg_dump_params(struct iscsi_portal_group * tpg)203 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
204 {
205 iscsi_print_params(tpg->param_list);
206 }
207
iscsit_set_default_tpg_attribs(struct iscsi_portal_group * tpg)208 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
209 {
210 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
211
212 a->authentication = TA_AUTHENTICATION;
213 a->login_timeout = TA_LOGIN_TIMEOUT;
214 a->netif_timeout = TA_NETIF_TIMEOUT;
215 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH;
216 a->generate_node_acls = TA_GENERATE_NODE_ACLS;
217 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS;
218 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT;
219 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT;
220 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY;
221 a->default_erl = TA_DEFAULT_ERL;
222 a->t10_pi = TA_DEFAULT_T10_PI;
223 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE;
224 a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS;
225 a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND;
226 }
227
iscsit_tpg_add_portal_group(struct iscsi_tiqn * tiqn,struct iscsi_portal_group * tpg)228 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
229 {
230 if (tpg->tpg_state != TPG_STATE_FREE) {
231 pr_err("Unable to add iSCSI Target Portal Group: %d"
232 " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
233 return -EEXIST;
234 }
235 iscsit_set_default_tpg_attribs(tpg);
236
237 if (iscsi_create_default_params(&tpg->param_list) < 0)
238 goto err_out;
239
240 tpg->tpg_attrib.tpg = tpg;
241
242 spin_lock(&tpg->tpg_state_lock);
243 tpg->tpg_state = TPG_STATE_INACTIVE;
244 spin_unlock(&tpg->tpg_state_lock);
245
246 spin_lock(&tiqn->tiqn_tpg_lock);
247 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
248 tiqn->tiqn_ntpgs++;
249 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
250 tiqn->tiqn, tpg->tpgt);
251 spin_unlock(&tiqn->tiqn_tpg_lock);
252
253 return 0;
254 err_out:
255 if (tpg->param_list) {
256 iscsi_release_param_list(tpg->param_list);
257 tpg->param_list = NULL;
258 }
259 return -ENOMEM;
260 }
261
iscsit_tpg_del_portal_group(struct iscsi_tiqn * tiqn,struct iscsi_portal_group * tpg,int force)262 int iscsit_tpg_del_portal_group(
263 struct iscsi_tiqn *tiqn,
264 struct iscsi_portal_group *tpg,
265 int force)
266 {
267 u8 old_state = tpg->tpg_state;
268
269 spin_lock(&tpg->tpg_state_lock);
270 tpg->tpg_state = TPG_STATE_INACTIVE;
271 spin_unlock(&tpg->tpg_state_lock);
272
273 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
274 pr_err("Unable to delete iSCSI Target Portal Group:"
275 " %hu while active sessions exist, and force=0\n",
276 tpg->tpgt);
277 tpg->tpg_state = old_state;
278 return -EPERM;
279 }
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
iscsit_tpg_enable_portal_group(struct iscsi_portal_group * tpg)304 int 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 int ret;
309
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 return -EINVAL;
314 }
315 /*
316 * Make sure that AuthMethod does not contain None as an option
317 * unless explictly disabled. Set the default to CHAP if authentication
318 * is enforced (as per default), and remove the NONE option.
319 */
320 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
321 if (!param)
322 return -EINVAL;
323
324 if (tpg->tpg_attrib.authentication) {
325 if (!strcmp(param->value, NONE)) {
326 ret = iscsi_update_param_value(param, CHAP);
327 if (ret)
328 goto err;
329 }
330
331 ret = iscsit_ta_authentication(tpg, 1);
332 if (ret < 0)
333 goto err;
334 }
335
336 spin_lock(&tpg->tpg_state_lock);
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 err:
349 return ret;
350 }
351
iscsit_tpg_disable_portal_group(struct iscsi_portal_group * tpg,int force)352 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
353 {
354 struct iscsi_tiqn *tiqn;
355 u8 old_state = tpg->tpg_state;
356
357 spin_lock(&tpg->tpg_state_lock);
358 if (tpg->tpg_state == TPG_STATE_INACTIVE) {
359 pr_err("iSCSI Target Portal Group: %hu is already"
360 " inactive, ignoring request.\n", tpg->tpgt);
361 spin_unlock(&tpg->tpg_state_lock);
362 return -EINVAL;
363 }
364 tpg->tpg_state = TPG_STATE_INACTIVE;
365 spin_unlock(&tpg->tpg_state_lock);
366
367 iscsit_clear_tpg_np_login_threads(tpg, false);
368
369 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
370 spin_lock(&tpg->tpg_state_lock);
371 tpg->tpg_state = old_state;
372 spin_unlock(&tpg->tpg_state_lock);
373 pr_err("Unable to disable iSCSI Target Portal Group:"
374 " %hu while active sessions exist, and force=0\n",
375 tpg->tpgt);
376 return -EPERM;
377 }
378
379 tiqn = tpg->tpg_tiqn;
380 if (!tiqn || (tpg == iscsit_global->discovery_tpg))
381 return 0;
382
383 spin_lock(&tiqn->tiqn_tpg_lock);
384 tiqn->tiqn_active_tpgs--;
385 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
386 tpg->tpgt);
387 spin_unlock(&tiqn->tiqn_tpg_lock);
388
389 return 0;
390 }
391
iscsit_tpg_get_node_attrib(struct iscsi_session * sess)392 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
393 struct iscsi_session *sess)
394 {
395 struct se_session *se_sess = sess->se_sess;
396 struct se_node_acl *se_nacl = se_sess->se_node_acl;
397 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
398 se_node_acl);
399
400 return &acl->node_attrib;
401 }
402
iscsit_tpg_locate_child_np(struct iscsi_tpg_np * tpg_np,int network_transport)403 struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
404 struct iscsi_tpg_np *tpg_np,
405 int network_transport)
406 {
407 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
408
409 spin_lock(&tpg_np->tpg_np_parent_lock);
410 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
411 &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
412 if (tpg_np_child->tpg_np->np_network_transport ==
413 network_transport) {
414 spin_unlock(&tpg_np->tpg_np_parent_lock);
415 return tpg_np_child;
416 }
417 }
418 spin_unlock(&tpg_np->tpg_np_parent_lock);
419
420 return NULL;
421 }
422
iscsit_tpg_check_network_portal(struct iscsi_tiqn * tiqn,struct sockaddr_storage * sockaddr,int network_transport)423 static bool iscsit_tpg_check_network_portal(
424 struct iscsi_tiqn *tiqn,
425 struct sockaddr_storage *sockaddr,
426 int network_transport)
427 {
428 struct iscsi_portal_group *tpg;
429 struct iscsi_tpg_np *tpg_np;
430 struct iscsi_np *np;
431 bool match = false;
432
433 spin_lock(&tiqn->tiqn_tpg_lock);
434 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
435
436 spin_lock(&tpg->tpg_np_lock);
437 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
438 np = tpg_np->tpg_np;
439
440 match = iscsit_check_np_match(sockaddr, np,
441 network_transport);
442 if (match)
443 break;
444 }
445 spin_unlock(&tpg->tpg_np_lock);
446 }
447 spin_unlock(&tiqn->tiqn_tpg_lock);
448
449 return match;
450 }
451
iscsit_tpg_add_network_portal(struct iscsi_portal_group * tpg,struct sockaddr_storage * sockaddr,struct iscsi_tpg_np * tpg_np_parent,int network_transport)452 struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
453 struct iscsi_portal_group *tpg,
454 struct sockaddr_storage *sockaddr,
455 struct iscsi_tpg_np *tpg_np_parent,
456 int network_transport)
457 {
458 struct iscsi_np *np;
459 struct iscsi_tpg_np *tpg_np;
460
461 if (!tpg_np_parent) {
462 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
463 network_transport)) {
464 pr_err("Network Portal: %pISc already exists on a"
465 " different TPG on %s\n", sockaddr,
466 tpg->tpg_tiqn->tiqn);
467 return ERR_PTR(-EEXIST);
468 }
469 }
470
471 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
472 if (!tpg_np) {
473 pr_err("Unable to allocate memory for"
474 " struct iscsi_tpg_np.\n");
475 return ERR_PTR(-ENOMEM);
476 }
477
478 np = iscsit_add_np(sockaddr, network_transport);
479 if (IS_ERR(np)) {
480 kfree(tpg_np);
481 return ERR_CAST(np);
482 }
483
484 INIT_LIST_HEAD(&tpg_np->tpg_np_list);
485 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
486 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
487 spin_lock_init(&tpg_np->tpg_np_parent_lock);
488 init_completion(&tpg_np->tpg_np_comp);
489 kref_init(&tpg_np->tpg_np_kref);
490 tpg_np->tpg_np = np;
491 tpg_np->tpg = tpg;
492
493 spin_lock(&tpg->tpg_np_lock);
494 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
495 tpg->num_tpg_nps++;
496 if (tpg->tpg_tiqn)
497 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
498 spin_unlock(&tpg->tpg_np_lock);
499
500 if (tpg_np_parent) {
501 tpg_np->tpg_np_parent = tpg_np_parent;
502 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
503 list_add_tail(&tpg_np->tpg_np_child_list,
504 &tpg_np_parent->tpg_np_parent_list);
505 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
506 }
507
508 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n",
509 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt,
510 np->np_transport->name);
511
512 return tpg_np;
513 }
514
iscsit_tpg_release_np(struct iscsi_tpg_np * tpg_np,struct iscsi_portal_group * tpg,struct iscsi_np * np)515 static int iscsit_tpg_release_np(
516 struct iscsi_tpg_np *tpg_np,
517 struct iscsi_portal_group *tpg,
518 struct iscsi_np *np)
519 {
520 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
521
522 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n",
523 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt,
524 np->np_transport->name);
525
526 tpg_np->tpg_np = NULL;
527 tpg_np->tpg = NULL;
528 kfree(tpg_np);
529 /*
530 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released.
531 */
532 return iscsit_del_np(np);
533 }
534
iscsit_tpg_del_network_portal(struct iscsi_portal_group * tpg,struct iscsi_tpg_np * tpg_np)535 int iscsit_tpg_del_network_portal(
536 struct iscsi_portal_group *tpg,
537 struct iscsi_tpg_np *tpg_np)
538 {
539 struct iscsi_np *np;
540 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
541 int ret = 0;
542
543 np = tpg_np->tpg_np;
544 if (!np) {
545 pr_err("Unable to locate struct iscsi_np from"
546 " struct iscsi_tpg_np\n");
547 return -EINVAL;
548 }
549
550 if (!tpg_np->tpg_np_parent) {
551 /*
552 * We are the parent tpg network portal. Release all of the
553 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent
554 * list first.
555 */
556 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
557 &tpg_np->tpg_np_parent_list,
558 tpg_np_child_list) {
559 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
560 if (ret < 0)
561 pr_err("iscsit_tpg_del_network_portal()"
562 " failed: %d\n", ret);
563 }
564 } else {
565 /*
566 * We are not the parent ISCSI_TCP tpg network portal. Release
567 * our own network portals from the child list.
568 */
569 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
570 list_del(&tpg_np->tpg_np_child_list);
571 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
572 }
573
574 spin_lock(&tpg->tpg_np_lock);
575 list_del(&tpg_np->tpg_np_list);
576 tpg->num_tpg_nps--;
577 if (tpg->tpg_tiqn)
578 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
579 spin_unlock(&tpg->tpg_np_lock);
580
581 return iscsit_tpg_release_np(tpg_np, tpg, np);
582 }
583
iscsit_ta_authentication(struct iscsi_portal_group * tpg,u32 authentication)584 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
585 {
586 unsigned char buf1[256], buf2[256], *none = NULL;
587 int len;
588 struct iscsi_param *param;
589 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
590
591 if ((authentication != 1) && (authentication != 0)) {
592 pr_err("Illegal value for authentication parameter:"
593 " %u, ignoring request.\n", authentication);
594 return -EINVAL;
595 }
596
597 memset(buf1, 0, sizeof(buf1));
598 memset(buf2, 0, sizeof(buf2));
599
600 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
601 if (!param)
602 return -EINVAL;
603
604 if (authentication) {
605 snprintf(buf1, sizeof(buf1), "%s", param->value);
606 none = strstr(buf1, NONE);
607 if (!none)
608 goto out;
609 if (!strncmp(none + 4, ",", 1)) {
610 if (!strcmp(buf1, none))
611 sprintf(buf2, "%s", none+5);
612 else {
613 none--;
614 *none = '\0';
615 len = sprintf(buf2, "%s", buf1);
616 none += 5;
617 sprintf(buf2 + len, "%s", none);
618 }
619 } else {
620 none--;
621 *none = '\0';
622 sprintf(buf2, "%s", buf1);
623 }
624 if (iscsi_update_param_value(param, buf2) < 0)
625 return -EINVAL;
626 } else {
627 snprintf(buf1, sizeof(buf1), "%s", param->value);
628 none = strstr(buf1, NONE);
629 if (none)
630 goto out;
631 strlcat(buf1, "," NONE, sizeof(buf1));
632 if (iscsi_update_param_value(param, buf1) < 0)
633 return -EINVAL;
634 }
635
636 out:
637 a->authentication = authentication;
638 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
639 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
640
641 return 0;
642 }
643
iscsit_ta_login_timeout(struct iscsi_portal_group * tpg,u32 login_timeout)644 int iscsit_ta_login_timeout(
645 struct iscsi_portal_group *tpg,
646 u32 login_timeout)
647 {
648 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
649
650 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
651 pr_err("Requested Login Timeout %u larger than maximum"
652 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
653 return -EINVAL;
654 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
655 pr_err("Requested Logout Timeout %u smaller than"
656 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
657 return -EINVAL;
658 }
659
660 a->login_timeout = login_timeout;
661 pr_debug("Set Logout Timeout to %u for Target Portal Group"
662 " %hu\n", a->login_timeout, tpg->tpgt);
663
664 return 0;
665 }
666
iscsit_ta_netif_timeout(struct iscsi_portal_group * tpg,u32 netif_timeout)667 int iscsit_ta_netif_timeout(
668 struct iscsi_portal_group *tpg,
669 u32 netif_timeout)
670 {
671 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
672
673 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
674 pr_err("Requested Network Interface Timeout %u larger"
675 " than maximum %u\n", netif_timeout,
676 TA_NETIF_TIMEOUT_MAX);
677 return -EINVAL;
678 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
679 pr_err("Requested Network Interface Timeout %u smaller"
680 " than minimum %u\n", netif_timeout,
681 TA_NETIF_TIMEOUT_MIN);
682 return -EINVAL;
683 }
684
685 a->netif_timeout = netif_timeout;
686 pr_debug("Set Network Interface Timeout to %u for"
687 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
688
689 return 0;
690 }
691
iscsit_ta_generate_node_acls(struct iscsi_portal_group * tpg,u32 flag)692 int iscsit_ta_generate_node_acls(
693 struct iscsi_portal_group *tpg,
694 u32 flag)
695 {
696 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
697
698 if ((flag != 0) && (flag != 1)) {
699 pr_err("Illegal value %d\n", flag);
700 return -EINVAL;
701 }
702
703 a->generate_node_acls = flag;
704 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
705 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
706
707 if (flag == 1 && a->cache_dynamic_acls == 0) {
708 pr_debug("Explicitly setting cache_dynamic_acls=1 when "
709 "generate_node_acls=1\n");
710 a->cache_dynamic_acls = 1;
711 }
712
713 return 0;
714 }
715
iscsit_ta_default_cmdsn_depth(struct iscsi_portal_group * tpg,u32 tcq_depth)716 int iscsit_ta_default_cmdsn_depth(
717 struct iscsi_portal_group *tpg,
718 u32 tcq_depth)
719 {
720 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
721
722 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
723 pr_err("Requested Default Queue Depth: %u larger"
724 " than maximum %u\n", tcq_depth,
725 TA_DEFAULT_CMDSN_DEPTH_MAX);
726 return -EINVAL;
727 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
728 pr_err("Requested Default Queue Depth: %u smaller"
729 " than minimum %u\n", tcq_depth,
730 TA_DEFAULT_CMDSN_DEPTH_MIN);
731 return -EINVAL;
732 }
733
734 a->default_cmdsn_depth = tcq_depth;
735 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
736 tpg->tpgt, a->default_cmdsn_depth);
737
738 return 0;
739 }
740
iscsit_ta_cache_dynamic_acls(struct iscsi_portal_group * tpg,u32 flag)741 int iscsit_ta_cache_dynamic_acls(
742 struct iscsi_portal_group *tpg,
743 u32 flag)
744 {
745 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
746
747 if ((flag != 0) && (flag != 1)) {
748 pr_err("Illegal value %d\n", flag);
749 return -EINVAL;
750 }
751
752 if (a->generate_node_acls == 1 && flag == 0) {
753 pr_debug("Skipping cache_dynamic_acls=0 when"
754 " generate_node_acls=1\n");
755 return 0;
756 }
757
758 a->cache_dynamic_acls = flag;
759 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
760 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
761 "Enabled" : "Disabled");
762
763 return 0;
764 }
765
iscsit_ta_demo_mode_write_protect(struct iscsi_portal_group * tpg,u32 flag)766 int iscsit_ta_demo_mode_write_protect(
767 struct iscsi_portal_group *tpg,
768 u32 flag)
769 {
770 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
771
772 if ((flag != 0) && (flag != 1)) {
773 pr_err("Illegal value %d\n", flag);
774 return -EINVAL;
775 }
776
777 a->demo_mode_write_protect = flag;
778 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
779 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
780
781 return 0;
782 }
783
iscsit_ta_prod_mode_write_protect(struct iscsi_portal_group * tpg,u32 flag)784 int iscsit_ta_prod_mode_write_protect(
785 struct iscsi_portal_group *tpg,
786 u32 flag)
787 {
788 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
789
790 if ((flag != 0) && (flag != 1)) {
791 pr_err("Illegal value %d\n", flag);
792 return -EINVAL;
793 }
794
795 a->prod_mode_write_protect = flag;
796 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
797 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
798 "ON" : "OFF");
799
800 return 0;
801 }
802
iscsit_ta_demo_mode_discovery(struct iscsi_portal_group * tpg,u32 flag)803 int iscsit_ta_demo_mode_discovery(
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->demo_mode_discovery = flag;
815 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:"
816 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ?
817 "ON" : "OFF");
818
819 return 0;
820 }
821
iscsit_ta_default_erl(struct iscsi_portal_group * tpg,u32 default_erl)822 int iscsit_ta_default_erl(
823 struct iscsi_portal_group *tpg,
824 u32 default_erl)
825 {
826 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
827
828 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) {
829 pr_err("Illegal value for default_erl: %u\n", default_erl);
830 return -EINVAL;
831 }
832
833 a->default_erl = default_erl;
834 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl);
835
836 return 0;
837 }
838
iscsit_ta_t10_pi(struct iscsi_portal_group * tpg,u32 flag)839 int iscsit_ta_t10_pi(
840 struct iscsi_portal_group *tpg,
841 u32 flag)
842 {
843 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
844
845 if ((flag != 0) && (flag != 1)) {
846 pr_err("Illegal value %d\n", flag);
847 return -EINVAL;
848 }
849
850 a->t10_pi = flag;
851 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:"
852 " %s\n", tpg->tpgt, (a->t10_pi) ?
853 "ON" : "OFF");
854
855 return 0;
856 }
857
iscsit_ta_fabric_prot_type(struct iscsi_portal_group * tpg,u32 prot_type)858 int iscsit_ta_fabric_prot_type(
859 struct iscsi_portal_group *tpg,
860 u32 prot_type)
861 {
862 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
863
864 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) {
865 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type);
866 return -EINVAL;
867 }
868
869 a->fabric_prot_type = prot_type;
870 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n",
871 tpg->tpgt, prot_type);
872
873 return 0;
874 }
875
iscsit_ta_tpg_enabled_sendtargets(struct iscsi_portal_group * tpg,u32 flag)876 int iscsit_ta_tpg_enabled_sendtargets(
877 struct iscsi_portal_group *tpg,
878 u32 flag)
879 {
880 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
881
882 if ((flag != 0) && (flag != 1)) {
883 pr_err("Illegal value %d\n", flag);
884 return -EINVAL;
885 }
886
887 a->tpg_enabled_sendtargets = flag;
888 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:"
889 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF");
890
891 return 0;
892 }
893
iscsit_ta_login_keys_workaround(struct iscsi_portal_group * tpg,u32 flag)894 int iscsit_ta_login_keys_workaround(
895 struct iscsi_portal_group *tpg,
896 u32 flag)
897 {
898 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
899
900 if ((flag != 0) && (flag != 1)) {
901 pr_err("Illegal value %d\n", flag);
902 return -EINVAL;
903 }
904
905 a->login_keys_workaround = flag;
906 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s ",
907 tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF");
908
909 return 0;
910 }
911
