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iser-target: Fix multi network portal shutdown regression
[deliverable/linux.git] / drivers / target / iscsi / iscsi_target_tpg.c
CommitLineData
e48354ce
NB		 1/*******************************************************************************
2 * This file contains iSCSI Target Portal Group related functions.
3 *
4c76251e 4 * (c) Copyright 2007-2013 Datera, Inc.
e48354ce
NB		 5 *
6 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 ******************************************************************************/
18
19#include <target/target_core_base.h>
c4795fb2 20#include <target/target_core_fabric.h>
e48354ce 21#include <target/target_core_configfs.h>
e48354ce
NB		 22
23#include "iscsi_target_core.h"
24#include "iscsi_target_erl0.h"
25#include "iscsi_target_login.h"
26#include "iscsi_target_nodeattrib.h"
27#include "iscsi_target_tpg.h"
28#include "iscsi_target_util.h"
29#include "iscsi_target.h"
30#include "iscsi_target_parameters.h"
31
baa4d64b
NB		 32#include <target/iscsi/iscsi_transport.h>
33
e48354ce
NB		 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);
a91eb7d9 50 sema_init(&tpg->np_login_sem, 1);
e48354ce
NB		 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,
8359cf43 73 NULL, &tpg->tpg_se_tpg, tpg,
e48354ce
NB		 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,
d381a801
NB		 130 struct iscsi_np *np,
131 struct iscsi_tpg_np **tpg_np_out)
e48354ce
NB		 132{
133 struct iscsi_portal_group *tpg = NULL;
134 struct iscsi_tpg_np *tpg_np;
135
136 spin_lock(&tiqn->tiqn_tpg_lock);
137 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
138
139 spin_lock(&tpg->tpg_state_lock);
a2a99cea 140 if (tpg->tpg_state != TPG_STATE_ACTIVE) {
e48354ce
NB		 141 spin_unlock(&tpg->tpg_state_lock);
142 continue;
143 }
144 spin_unlock(&tpg->tpg_state_lock);
145
146 spin_lock(&tpg->tpg_np_lock);
147 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
148 if (tpg_np->tpg_np == np) {
d381a801
NB		 149 *tpg_np_out = tpg_np;
150 kref_get(&tpg_np->tpg_np_kref);
e48354ce
NB		 151 spin_unlock(&tpg->tpg_np_lock);
152 spin_unlock(&tiqn->tiqn_tpg_lock);
153 return tpg;
154 }
155 }
156 spin_unlock(&tpg->tpg_np_lock);
157 }
158 spin_unlock(&tiqn->tiqn_tpg_lock);
159
160 return NULL;
161}
162
163int iscsit_get_tpg(
164 struct iscsi_portal_group *tpg)
165{
166 int ret;
167
168 ret = mutex_lock_interruptible(&tpg->tpg_access_lock);
169 return ((ret != 0) || signal_pending(current)) ? -1 : 0;
170}
171
172void iscsit_put_tpg(struct iscsi_portal_group *tpg)
173{
174 mutex_unlock(&tpg->tpg_access_lock);
175}
176
177static void iscsit_clear_tpg_np_login_thread(
178 struct iscsi_tpg_np *tpg_np,
a91eb7d9
NB		 179 struct iscsi_portal_group *tpg,
180 bool shutdown)
e48354ce
NB		 181{
182 if (!tpg_np->tpg_np) {
183 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
184 return;
185 }
186
2363d196
NB		 187 if (shutdown)
188 tpg_np->tpg_np->enabled = false;
a91eb7d9 189 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
e48354ce
NB		 190}
191
192void iscsit_clear_tpg_np_login_threads(
a91eb7d9
NB		 193 struct iscsi_portal_group *tpg,
194 bool shutdown)
e48354ce
NB		 195{
196 struct iscsi_tpg_np *tpg_np;
197
198 spin_lock(&tpg->tpg_np_lock);
199 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
200 if (!tpg_np->tpg_np) {
201 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
202 continue;
203 }
204 spin_unlock(&tpg->tpg_np_lock);
a91eb7d9 205 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown);
e48354ce
NB		 206 spin_lock(&tpg->tpg_np_lock);
207 }
208 spin_unlock(&tpg->tpg_np_lock);
209}
210
211void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
212{
213 iscsi_print_params(tpg->param_list);
214}
215
216static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
217{
218 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
219
220 a->authentication = TA_AUTHENTICATION;
221 a->login_timeout = TA_LOGIN_TIMEOUT;
222 a->netif_timeout = TA_NETIF_TIMEOUT;
223 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH;
224 a->generate_node_acls = TA_GENERATE_NODE_ACLS;
225 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS;
226 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT;
227 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT;
4c54b6cf 228 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY;
d1fa7a1d 229 a->default_erl = TA_DEFAULT_ERL;
5b168dcd 230 a->t10_pi = TA_DEFAULT_T10_PI;
e48354ce
NB		 231}
232
233int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
234{
235 if (tpg->tpg_state != TPG_STATE_FREE) {
236 pr_err("Unable to add iSCSI Target Portal Group: %d"
237 " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
238 return -EEXIST;
239 }
240 iscsit_set_default_tpg_attribs(tpg);
241
242 if (iscsi_create_default_params(&tpg->param_list) < 0)
243 goto err_out;
244
b7eec2cd 245 tpg->tpg_attrib.tpg = tpg;
e48354ce
NB		 246
247 spin_lock(&tpg->tpg_state_lock);
248 tpg->tpg_state = TPG_STATE_INACTIVE;
249 spin_unlock(&tpg->tpg_state_lock);
250
251 spin_lock(&tiqn->tiqn_tpg_lock);
252 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
253 tiqn->tiqn_ntpgs++;
254 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
255 tiqn->tiqn, tpg->tpgt);
256 spin_unlock(&tiqn->tiqn_tpg_lock);
257
258 return 0;
259err_out:
260 if (tpg->param_list) {
261 iscsi_release_param_list(tpg->param_list);
262 tpg->param_list = NULL;
263 }
264 kfree(tpg);
265 return -ENOMEM;
266}
267
268int iscsit_tpg_del_portal_group(
269 struct iscsi_tiqn *tiqn,
270 struct iscsi_portal_group *tpg,
271 int force)
272{
273 u8 old_state = tpg->tpg_state;
274
275 spin_lock(&tpg->tpg_state_lock);
276 tpg->tpg_state = TPG_STATE_INACTIVE;
277 spin_unlock(&tpg->tpg_state_lock);
278
a91eb7d9
NB		 279 iscsit_clear_tpg_np_login_threads(tpg, true);
280
e48354ce
NB		 281 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
282 pr_err("Unable to delete iSCSI Target Portal Group:"
283 " %hu while active sessions exist, and force=0\n",
284 tpg->tpgt);
285 tpg->tpg_state = old_state;
286 return -EPERM;
287 }
288
289 core_tpg_clear_object_luns(&tpg->tpg_se_tpg);
290
291 if (tpg->param_list) {
292 iscsi_release_param_list(tpg->param_list);
293 tpg->param_list = NULL;
294 }
295
296 core_tpg_deregister(&tpg->tpg_se_tpg);
297
298 spin_lock(&tpg->tpg_state_lock);
299 tpg->tpg_state = TPG_STATE_FREE;
300 spin_unlock(&tpg->tpg_state_lock);
301
302 spin_lock(&tiqn->tiqn_tpg_lock);
303 tiqn->tiqn_ntpgs--;
304 list_del(&tpg->tpg_list);
305 spin_unlock(&tiqn->tiqn_tpg_lock);
306
307 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
308 tiqn->tiqn, tpg->tpgt);
309
310 kfree(tpg);
311 return 0;
312}
313
314int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
315{
316 struct iscsi_param *param;
317 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
617a0c2e 318 int ret;
e48354ce
NB		 319
320 spin_lock(&tpg->tpg_state_lock);
321 if (tpg->tpg_state == TPG_STATE_ACTIVE) {
322 pr_err("iSCSI target portal group: %hu is already"
323 " active, ignoring request.\n", tpg->tpgt);
324 spin_unlock(&tpg->tpg_state_lock);
325 return -EINVAL;
326 }
327 /*
328 * Make sure that AuthMethod does not contain None as an option
329 * unless explictly disabled. Set the default to CHAP if authentication
330 * is enforced (as per default), and remove the NONE option.
331 */
332 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
333 if (!param) {
334 spin_unlock(&tpg->tpg_state_lock);
617a0c2e 335 return -EINVAL;
e48354ce
NB		 336 }
337
b7eec2cd 338 if (tpg->tpg_attrib.authentication) {
617a0c2e
AG		 339 if (!strcmp(param->value, NONE)) {
340 ret = iscsi_update_param_value(param, CHAP);
341 if (ret)
342 goto err;
e48354ce 343 }
617a0c2e
AG		 344
345 ret = iscsit_ta_authentication(tpg, 1);
346 if (ret < 0)
347 goto err;
e48354ce
NB		 348 }
349
350 tpg->tpg_state = TPG_STATE_ACTIVE;
351 spin_unlock(&tpg->tpg_state_lock);
352
353 spin_lock(&tiqn->tiqn_tpg_lock);
354 tiqn->tiqn_active_tpgs++;
355 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
356 tpg->tpgt);
357 spin_unlock(&tiqn->tiqn_tpg_lock);
358
359 return 0;
617a0c2e
AG		 360
361err:
362 spin_unlock(&tpg->tpg_state_lock);
363 return ret;
e48354ce
NB		 364}
365
366int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
367{
368 struct iscsi_tiqn *tiqn;
369 u8 old_state = tpg->tpg_state;
370
371 spin_lock(&tpg->tpg_state_lock);
372 if (tpg->tpg_state == TPG_STATE_INACTIVE) {
373 pr_err("iSCSI Target Portal Group: %hu is already"
374 " inactive, ignoring request.\n", tpg->tpgt);
375 spin_unlock(&tpg->tpg_state_lock);
376 return -EINVAL;
377 }
378 tpg->tpg_state = TPG_STATE_INACTIVE;
379 spin_unlock(&tpg->tpg_state_lock);
380
a91eb7d9 381 iscsit_clear_tpg_np_login_threads(tpg, false);
e48354ce
NB		 382
383 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
384 spin_lock(&tpg->tpg_state_lock);
385 tpg->tpg_state = old_state;
386 spin_unlock(&tpg->tpg_state_lock);
387 pr_err("Unable to disable iSCSI Target Portal Group:"
388 " %hu while active sessions exist, and force=0\n",
389 tpg->tpgt);
390 return -EPERM;
391 }
392
393 tiqn = tpg->tpg_tiqn;
394 if (!tiqn || (tpg == iscsit_global->discovery_tpg))
395 return 0;
396
397 spin_lock(&tiqn->tiqn_tpg_lock);
398 tiqn->tiqn_active_tpgs--;
399 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
400 tpg->tpgt);
401 spin_unlock(&tiqn->tiqn_tpg_lock);
402
403 return 0;
404}
405
406struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
407 struct iscsi_session *sess)
408{
409 struct se_session *se_sess = sess->se_sess;
410 struct se_node_acl *se_nacl = se_sess->se_node_acl;
411 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
412 se_node_acl);
413
414 return &acl->node_attrib;
415}
416
417struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
418 struct iscsi_tpg_np *tpg_np,
419 int network_transport)
420{
421 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
422
423 spin_lock(&tpg_np->tpg_np_parent_lock);
424 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
425 &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
426 if (tpg_np_child->tpg_np->np_network_transport ==
427 network_transport) {
428 spin_unlock(&tpg_np->tpg_np_parent_lock);
429 return tpg_np_child;
430 }
431 }
432 spin_unlock(&tpg_np->tpg_np_parent_lock);
433
434 return NULL;
435}
436
6e545935
NB		 437static bool iscsit_tpg_check_network_portal(
438 struct iscsi_tiqn *tiqn,
439 struct __kernel_sockaddr_storage *sockaddr,
440 int network_transport)
441{
442 struct iscsi_portal_group *tpg;
443 struct iscsi_tpg_np *tpg_np;
444 struct iscsi_np *np;
445 bool match = false;
446
447 spin_lock(&tiqn->tiqn_tpg_lock);
448 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
449
450 spin_lock(&tpg->tpg_np_lock);
451 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
452 np = tpg_np->tpg_np;
453
454 match = iscsit_check_np_match(sockaddr, np,
455 network_transport);
456 if (match == true)
457 break;
458 }
459 spin_unlock(&tpg->tpg_np_lock);
460 }
461 spin_unlock(&tiqn->tiqn_tpg_lock);
462
463 return match;
464}
465
e48354ce
NB		 466struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
467 struct iscsi_portal_group *tpg,
468 struct __kernel_sockaddr_storage *sockaddr,
469 char *ip_str,
470 struct iscsi_tpg_np *tpg_np_parent,
471 int network_transport)
472{
473 struct iscsi_np *np;
474 struct iscsi_tpg_np *tpg_np;
475
6e545935
NB		 476 if (!tpg_np_parent) {
477 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
478 network_transport) == true) {
479 pr_err("Network Portal: %s already exists on a"
480 " different TPG on %s\n", ip_str,
481 tpg->tpg_tiqn->tiqn);
482 return ERR_PTR(-EEXIST);
483 }
484 }
485
e48354ce
NB		 486 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
487 if (!tpg_np) {
488 pr_err("Unable to allocate memory for"
489 " struct iscsi_tpg_np.\n");
490 return ERR_PTR(-ENOMEM);
491 }
492
493 np = iscsit_add_np(sockaddr, ip_str, network_transport);
494 if (IS_ERR(np)) {
495 kfree(tpg_np);
496 return ERR_CAST(np);
497 }
498
499 INIT_LIST_HEAD(&tpg_np->tpg_np_list);
500 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
501 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
502 spin_lock_init(&tpg_np->tpg_np_parent_lock);
d381a801
NB		 503 init_completion(&tpg_np->tpg_np_comp);
504 kref_init(&tpg_np->tpg_np_kref);
e48354ce 505 tpg_np->tpg_np = np;
5b168dcd 506 np->tpg_np = tpg_np;
e48354ce
NB		 507 tpg_np->tpg = tpg;
508
509 spin_lock(&tpg->tpg_np_lock);
510 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
511 tpg->num_tpg_nps++;
512 if (tpg->tpg_tiqn)
513 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
514 spin_unlock(&tpg->tpg_np_lock);
515
516 if (tpg_np_parent) {
517 tpg_np->tpg_np_parent = tpg_np_parent;
518 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
519 list_add_tail(&tpg_np->tpg_np_child_list,
520 &tpg_np_parent->tpg_np_parent_list);
521 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
522 }
523
524 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
525 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
baa4d64b 526 np->np_transport->name);
e48354ce
NB		 527
528 return tpg_np;
529}
530
531static int iscsit_tpg_release_np(
532 struct iscsi_tpg_np *tpg_np,
533 struct iscsi_portal_group *tpg,
534 struct iscsi_np *np)
535{
a91eb7d9 536 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
e48354ce
NB		 537
538 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
539 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
baa4d64b 540 np->np_transport->name);
e48354ce
NB		 541
542 tpg_np->tpg_np = NULL;
543 tpg_np->tpg = NULL;
544 kfree(tpg_np);
545 /*
546 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released.
547 */
548 return iscsit_del_np(np);
549}
550
551int iscsit_tpg_del_network_portal(
552 struct iscsi_portal_group *tpg,
553 struct iscsi_tpg_np *tpg_np)
554{
555 struct iscsi_np *np;
556 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
557 int ret = 0;
558
559 np = tpg_np->tpg_np;
560 if (!np) {
561 pr_err("Unable to locate struct iscsi_np from"
562 " struct iscsi_tpg_np\n");
563 return -EINVAL;
564 }
565
566 if (!tpg_np->tpg_np_parent) {
567 /*
568 * We are the parent tpg network portal. Release all of the
569 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent
570 * list first.
571 */
572 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
573 &tpg_np->tpg_np_parent_list,
574 tpg_np_child_list) {
575 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
576 if (ret < 0)
577 pr_err("iscsit_tpg_del_network_portal()"
578 " failed: %d\n", ret);
579 }
580 } else {
581 /*
582 * We are not the parent ISCSI_TCP tpg network portal. Release
583 * our own network portals from the child list.
584 */
585 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
586 list_del(&tpg_np->tpg_np_child_list);
587 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
588 }
589
590 spin_lock(&tpg->tpg_np_lock);
591 list_del(&tpg_np->tpg_np_list);
592 tpg->num_tpg_nps--;
593 if (tpg->tpg_tiqn)
594 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
595 spin_unlock(&tpg->tpg_np_lock);
596
597 return iscsit_tpg_release_np(tpg_np, tpg, np);
598}
599
600int iscsit_tpg_set_initiator_node_queue_depth(
601 struct iscsi_portal_group *tpg,
602 unsigned char *initiatorname,
603 u32 queue_depth,
604 int force)
605{
606 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg,
607 initiatorname, queue_depth, force);
608}
609
610int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
611{
612 unsigned char buf1[256], buf2[256], *none = NULL;
613 int len;
614 struct iscsi_param *param;
615 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
616
617 if ((authentication != 1) && (authentication != 0)) {
618 pr_err("Illegal value for authentication parameter:"
619 " %u, ignoring request.\n", authentication);
617a0c2e 620 return -EINVAL;
e48354ce
NB		 621 }
622
623 memset(buf1, 0, sizeof(buf1));
624 memset(buf2, 0, sizeof(buf2));
625
626 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
627 if (!param)
628 return -EINVAL;
629
630 if (authentication) {
631 snprintf(buf1, sizeof(buf1), "%s", param->value);
632 none = strstr(buf1, NONE);
633 if (!none)
634 goto out;
635 if (!strncmp(none + 4, ",", 1)) {
636 if (!strcmp(buf1, none))
637 sprintf(buf2, "%s", none+5);
638 else {
639 none--;
640 *none = '\0';
641 len = sprintf(buf2, "%s", buf1);
642 none += 5;
643 sprintf(buf2 + len, "%s", none);
644 }
645 } else {
646 none--;
647 *none = '\0';
648 sprintf(buf2, "%s", buf1);
649 }
650 if (iscsi_update_param_value(param, buf2) < 0)
651 return -EINVAL;
652 } else {
653 snprintf(buf1, sizeof(buf1), "%s", param->value);
654 none = strstr(buf1, NONE);
ee1b1b9c 655 if (none)
e48354ce
NB		 656 goto out;
657 strncat(buf1, ",", strlen(","));
658 strncat(buf1, NONE, strlen(NONE));
659 if (iscsi_update_param_value(param, buf1) < 0)
660 return -EINVAL;
661 }
662
663out:
664 a->authentication = authentication;
665 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
666 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
667
668 return 0;
669}
670
671int iscsit_ta_login_timeout(
672 struct iscsi_portal_group *tpg,
673 u32 login_timeout)
674{
675 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
676
677 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
678 pr_err("Requested Login Timeout %u larger than maximum"
679 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
680 return -EINVAL;
681 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
682 pr_err("Requested Logout Timeout %u smaller than"
683 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
684 return -EINVAL;
685 }
686
687 a->login_timeout = login_timeout;
688 pr_debug("Set Logout Timeout to %u for Target Portal Group"
689 " %hu\n", a->login_timeout, tpg->tpgt);
690
691 return 0;
692}
693
694int iscsit_ta_netif_timeout(
695 struct iscsi_portal_group *tpg,
696 u32 netif_timeout)
697{
698 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
699
700 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
701 pr_err("Requested Network Interface Timeout %u larger"
702 " than maximum %u\n", netif_timeout,
703 TA_NETIF_TIMEOUT_MAX);
704 return -EINVAL;
705 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
706 pr_err("Requested Network Interface Timeout %u smaller"
707 " than minimum %u\n", netif_timeout,
708 TA_NETIF_TIMEOUT_MIN);
709 return -EINVAL;
710 }
711
712 a->netif_timeout = netif_timeout;
713 pr_debug("Set Network Interface Timeout to %u for"
714 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
715
716 return 0;
717}
718
719int iscsit_ta_generate_node_acls(
720 struct iscsi_portal_group *tpg,
721 u32 flag)
722{
723 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
724
725 if ((flag != 0) && (flag != 1)) {
726 pr_err("Illegal value %d\n", flag);
727 return -EINVAL;
728 }
729
730 a->generate_node_acls = flag;
731 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
732 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
733
38b11bae
NB		 734 if (flag == 1 && a->cache_dynamic_acls == 0) {
735 pr_debug("Explicitly setting cache_dynamic_acls=1 when "
736 "generate_node_acls=1\n");
737 a->cache_dynamic_acls = 1;
738 }
739
e48354ce
NB		 740 return 0;
741}
742
743int iscsit_ta_default_cmdsn_depth(
744 struct iscsi_portal_group *tpg,
745 u32 tcq_depth)
746{
747 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
748
749 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
750 pr_err("Requested Default Queue Depth: %u larger"
751 " than maximum %u\n", tcq_depth,
752 TA_DEFAULT_CMDSN_DEPTH_MAX);
753 return -EINVAL;
754 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
755 pr_err("Requested Default Queue Depth: %u smaller"
756 " than minimum %u\n", tcq_depth,
757 TA_DEFAULT_CMDSN_DEPTH_MIN);
758 return -EINVAL;
759 }
760
761 a->default_cmdsn_depth = tcq_depth;
762 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
763 tpg->tpgt, a->default_cmdsn_depth);
764
765 return 0;
766}
767
768int iscsit_ta_cache_dynamic_acls(
769 struct iscsi_portal_group *tpg,
770 u32 flag)
771{
772 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
773
774 if ((flag != 0) && (flag != 1)) {
775 pr_err("Illegal value %d\n", flag);
776 return -EINVAL;
777 }
778
38b11bae
NB		 779 if (a->generate_node_acls == 1 && flag == 0) {
780 pr_debug("Skipping cache_dynamic_acls=0 when"
781 " generate_node_acls=1\n");
782 return 0;
783 }
784
e48354ce
NB		 785 a->cache_dynamic_acls = flag;
786 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
787 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
788 "Enabled" : "Disabled");
789
790 return 0;
791}
792
793int iscsit_ta_demo_mode_write_protect(
794 struct iscsi_portal_group *tpg,
795 u32 flag)
796{
797 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
798
799 if ((flag != 0) && (flag != 1)) {
800 pr_err("Illegal value %d\n", flag);
801 return -EINVAL;
802 }
803
804 a->demo_mode_write_protect = flag;
805 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
806 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
807
808 return 0;
809}
810
811int iscsit_ta_prod_mode_write_protect(
812 struct iscsi_portal_group *tpg,
813 u32 flag)
814{
815 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
816
817 if ((flag != 0) && (flag != 1)) {
818 pr_err("Illegal value %d\n", flag);
819 return -EINVAL;
820 }
821
822 a->prod_mode_write_protect = flag;
823 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
824 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
825 "ON" : "OFF");
826
827 return 0;
828}
4c54b6cf
TG		 829
830int iscsit_ta_demo_mode_discovery(
831 struct iscsi_portal_group *tpg,
832 u32 flag)
833{
834 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
835
836 if ((flag != 0) && (flag != 1)) {
837 pr_err("Illegal value %d\n", flag);
838 return -EINVAL;
839 }
840
841 a->demo_mode_discovery = flag;
842 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:"
843 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ?
844 "ON" : "OFF");
845
846 return 0;
847}
d1fa7a1d
NB		 848
849int iscsit_ta_default_erl(
850 struct iscsi_portal_group *tpg,
851 u32 default_erl)
852{
853 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
854
855 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) {
856 pr_err("Illegal value for default_erl: %u\n", default_erl);
857 return -EINVAL;
858 }
859
860 a->default_erl = default_erl;
861 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl);
862
863 return 0;
864}
8085176f
SG		 865
866int iscsit_ta_t10_pi(
867 struct iscsi_portal_group *tpg,
868 u32 flag)
869{
870 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
871
872 if ((flag != 0) && (flag != 1)) {
873 pr_err("Illegal value %d\n", flag);
874 return -EINVAL;
875 }
876
877 a->t10_pi = flag;
878 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:"
879 " %s\n", tpg->tpgt, (a->t10_pi) ?
880 "ON" : "OFF");
881
882 return 0;
883}
Linux kernel - Deliverables
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