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19#include <linux/slab.h>
20#include <target/target_core_base.h>
21#include <target/target_core_fabric.h>
22#include <target/iscsi/iscsi_target_core.h>
23#include "iscsi_target_erl0.h"
24#include "iscsi_target_login.h"
25#include "iscsi_target_nodeattrib.h"
26#include "iscsi_target_tpg.h"
27#include "iscsi_target_util.h"
28#include "iscsi_target.h"
29#include "iscsi_target_parameters.h"
30
31#include <target/iscsi/iscsi_transport.h>
32
33struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt)
34{
35 struct iscsi_portal_group *tpg;
36
37 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL);
38 if (!tpg) {
39 pr_err("Unable to allocate struct iscsi_portal_group\n");
40 return NULL;
41 }
42
43 tpg->tpgt = tpgt;
44 tpg->tpg_state = TPG_STATE_FREE;
45 tpg->tpg_tiqn = tiqn;
46 INIT_LIST_HEAD(&tpg->tpg_gnp_list);
47 INIT_LIST_HEAD(&tpg->tpg_list);
48 mutex_init(&tpg->tpg_access_lock);
49 sema_init(&tpg->np_login_sem, 1);
50 spin_lock_init(&tpg->tpg_state_lock);
51 spin_lock_init(&tpg->tpg_np_lock);
52
53 return tpg;
54}
55
56static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *);
57
58int iscsit_load_discovery_tpg(void)
59{
60 struct iscsi_param *param;
61 struct iscsi_portal_group *tpg;
62 int ret;
63
64 tpg = iscsit_alloc_portal_group(NULL, 1);
65 if (!tpg) {
66 pr_err("Unable to allocate struct iscsi_portal_group\n");
67 return -1;
68 }
69
70
71
72
73 tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops;
74 ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1);
75 if (ret < 0) {
76 kfree(tpg);
77 return -1;
78 }
79
80 tpg->sid = 1;
81 iscsit_set_default_tpg_attribs(tpg);
82
83 if (iscsi_create_default_params(&tpg->param_list) < 0)
84 goto out;
85
86
87
88
89
90
91 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
92 if (!param)
93 goto free_pl_out;
94
95 if (iscsi_update_param_value(param, "CHAP,None") < 0)
96 goto free_pl_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;
108free_pl_out:
109 iscsi_release_param_list(tpg->param_list);
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 iscsi_release_param_list(tpg->param_list);
125 core_tpg_deregister(&tpg->tpg_se_tpg);
126
127 kfree(tpg);
128 iscsit_global->discovery_tpg = NULL;
129}
130
131struct iscsi_portal_group *iscsit_get_tpg_from_np(
132 struct iscsi_tiqn *tiqn,
133 struct iscsi_np *np,
134 struct iscsi_tpg_np **tpg_np_out)
135{
136 struct iscsi_portal_group *tpg = NULL;
137 struct iscsi_tpg_np *tpg_np;
138
139 spin_lock(&tiqn->tiqn_tpg_lock);
140 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
141
142 spin_lock(&tpg->tpg_state_lock);
143 if (tpg->tpg_state != TPG_STATE_ACTIVE) {
144 spin_unlock(&tpg->tpg_state_lock);
145 continue;
146 }
147 spin_unlock(&tpg->tpg_state_lock);
148
149 spin_lock(&tpg->tpg_np_lock);
150 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
151 if (tpg_np->tpg_np == np) {
152 *tpg_np_out = tpg_np;
153 kref_get(&tpg_np->tpg_np_kref);
154 spin_unlock(&tpg->tpg_np_lock);
155 spin_unlock(&tiqn->tiqn_tpg_lock);
156 return tpg;
157 }
158 }
159 spin_unlock(&tpg->tpg_np_lock);
160 }
161 spin_unlock(&tiqn->tiqn_tpg_lock);
162
163 return NULL;
164}
165
166int iscsit_get_tpg(
167 struct iscsi_portal_group *tpg)
168{
169 return mutex_lock_interruptible(&tpg->tpg_access_lock);
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,
179 struct iscsi_portal_group *tpg,
180 bool shutdown)
181{
182 if (!tpg_np->tpg_np) {
183 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
184 return;
185 }
186
187 if (shutdown)
188 tpg_np->tpg_np->enabled = false;
189 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
190}
191
192static void iscsit_clear_tpg_np_login_threads(
193 struct iscsi_portal_group *tpg,
194 bool shutdown)
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);
205 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown);
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;
228 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY;
229 a->default_erl = TA_DEFAULT_ERL;
230 a->t10_pi = TA_DEFAULT_T10_PI;
231 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE;
232 a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS;
233 a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND;
234}
235
236int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
237{
238 if (tpg->tpg_state != TPG_STATE_FREE) {
239 pr_err("Unable to add iSCSI Target Portal Group: %d"
240 " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
241 return -EEXIST;
242 }
243 iscsit_set_default_tpg_attribs(tpg);
244
245 if (iscsi_create_default_params(&tpg->param_list) < 0)
246 goto err_out;
247
248 tpg->tpg_attrib.tpg = tpg;
249
250 spin_lock(&tpg->tpg_state_lock);
251 tpg->tpg_state = TPG_STATE_INACTIVE;
252 spin_unlock(&tpg->tpg_state_lock);
253
254 spin_lock(&tiqn->tiqn_tpg_lock);
255 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
256 tiqn->tiqn_ntpgs++;
257 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
258 tiqn->tiqn, tpg->tpgt);
259 spin_unlock(&tiqn->tiqn_tpg_lock);
260
261 return 0;
262err_out:
263 if (tpg->param_list) {
264 iscsi_release_param_list(tpg->param_list);
265 tpg->param_list = NULL;
266 }
267 return -ENOMEM;
268}
269
270int iscsit_tpg_del_portal_group(
271 struct iscsi_tiqn *tiqn,
272 struct iscsi_portal_group *tpg,
273 int force)
274{
275 u8 old_state = tpg->tpg_state;
276
277 spin_lock(&tpg->tpg_state_lock);
278 tpg->tpg_state = TPG_STATE_INACTIVE;
279 spin_unlock(&tpg->tpg_state_lock);
280
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 if (tpg->param_list) {
290 iscsi_release_param_list(tpg->param_list);
291 tpg->param_list = NULL;
292 }
293
294 core_tpg_deregister(&tpg->tpg_se_tpg);
295
296 spin_lock(&tpg->tpg_state_lock);
297 tpg->tpg_state = TPG_STATE_FREE;
298 spin_unlock(&tpg->tpg_state_lock);
299
300 spin_lock(&tiqn->tiqn_tpg_lock);
301 tiqn->tiqn_ntpgs--;
302 list_del(&tpg->tpg_list);
303 spin_unlock(&tiqn->tiqn_tpg_lock);
304
305 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
306 tiqn->tiqn, tpg->tpgt);
307
308 kfree(tpg);
309 return 0;
310}
311
312int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
313{
314 struct iscsi_param *param;
315 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
316 int ret;
317
318 if (tpg->tpg_state == TPG_STATE_ACTIVE) {
319 pr_err("iSCSI target portal group: %hu is already"
320 " active, ignoring request.\n", tpg->tpgt);
321 return -EINVAL;
322 }
323
324
325
326
327
328 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
329 if (!param)
330 return -EINVAL;
331
332 if (tpg->tpg_attrib.authentication) {
333 if (!strcmp(param->value, NONE)) {
334 ret = iscsi_update_param_value(param, CHAP);
335 if (ret)
336 goto err;
337 }
338
339 ret = iscsit_ta_authentication(tpg, 1);
340 if (ret < 0)
341 goto err;
342 }
343
344 spin_lock(&tpg->tpg_state_lock);
345 tpg->tpg_state = TPG_STATE_ACTIVE;
346 spin_unlock(&tpg->tpg_state_lock);
347
348 spin_lock(&tiqn->tiqn_tpg_lock);
349 tiqn->tiqn_active_tpgs++;
350 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
351 tpg->tpgt);
352 spin_unlock(&tiqn->tiqn_tpg_lock);
353
354 return 0;
355
356err:
357 return ret;
358}
359
360int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
361{
362 struct iscsi_tiqn *tiqn;
363 u8 old_state = tpg->tpg_state;
364
365 spin_lock(&tpg->tpg_state_lock);
366 if (tpg->tpg_state == TPG_STATE_INACTIVE) {
367 pr_err("iSCSI Target Portal Group: %hu is already"
368 " inactive, ignoring request.\n", tpg->tpgt);
369 spin_unlock(&tpg->tpg_state_lock);
370 return -EINVAL;
371 }
372 tpg->tpg_state = TPG_STATE_INACTIVE;
373 spin_unlock(&tpg->tpg_state_lock);
374
375 iscsit_clear_tpg_np_login_threads(tpg, false);
376
377 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
378 spin_lock(&tpg->tpg_state_lock);
379 tpg->tpg_state = old_state;
380 spin_unlock(&tpg->tpg_state_lock);
381 pr_err("Unable to disable iSCSI Target Portal Group:"
382 " %hu while active sessions exist, and force=0\n",
383 tpg->tpgt);
384 return -EPERM;
385 }
386
387 tiqn = tpg->tpg_tiqn;
388 if (!tiqn || (tpg == iscsit_global->discovery_tpg))
389 return 0;
390
391 spin_lock(&tiqn->tiqn_tpg_lock);
392 tiqn->tiqn_active_tpgs--;
393 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
394 tpg->tpgt);
395 spin_unlock(&tiqn->tiqn_tpg_lock);
396
397 return 0;
398}
399
400struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
401 struct iscsi_session *sess)
402{
403 struct se_session *se_sess = sess->se_sess;
404 struct se_node_acl *se_nacl = se_sess->se_node_acl;
405 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
406 se_node_acl);
407
408 return &acl->node_attrib;
409}
410
411struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
412 struct iscsi_tpg_np *tpg_np,
413 int network_transport)
414{
415 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
416
417 spin_lock(&tpg_np->tpg_np_parent_lock);
418 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
419 &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
420 if (tpg_np_child->tpg_np->np_network_transport ==
421 network_transport) {
422 spin_unlock(&tpg_np->tpg_np_parent_lock);
423 return tpg_np_child;
424 }
425 }
426 spin_unlock(&tpg_np->tpg_np_parent_lock);
427
428 return NULL;
429}
430
431static bool iscsit_tpg_check_network_portal(
432 struct iscsi_tiqn *tiqn,
433 struct sockaddr_storage *sockaddr,
434 int network_transport)
435{
436 struct iscsi_portal_group *tpg;
437 struct iscsi_tpg_np *tpg_np;
438 struct iscsi_np *np;
439 bool match = false;
440
441 spin_lock(&tiqn->tiqn_tpg_lock);
442 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
443
444 spin_lock(&tpg->tpg_np_lock);
445 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
446 np = tpg_np->tpg_np;
447
448 match = iscsit_check_np_match(sockaddr, np,
449 network_transport);
450 if (match)
451 break;
452 }
453 spin_unlock(&tpg->tpg_np_lock);
454 }
455 spin_unlock(&tiqn->tiqn_tpg_lock);
456
457 return match;
458}
459
460struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
461 struct iscsi_portal_group *tpg,
462 struct sockaddr_storage *sockaddr,
463 struct iscsi_tpg_np *tpg_np_parent,
464 int network_transport)
465{
466 struct iscsi_np *np;
467 struct iscsi_tpg_np *tpg_np;
468
469 if (!tpg_np_parent) {
470 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
471 network_transport)) {
472 pr_err("Network Portal: %pISc already exists on a"
473 " different TPG on %s\n", sockaddr,
474 tpg->tpg_tiqn->tiqn);
475 return ERR_PTR(-EEXIST);
476 }
477 }
478
479 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
480 if (!tpg_np) {
481 pr_err("Unable to allocate memory for"
482 " struct iscsi_tpg_np.\n");
483 return ERR_PTR(-ENOMEM);
484 }
485
486 np = iscsit_add_np(sockaddr, network_transport);
487 if (IS_ERR(np)) {
488 kfree(tpg_np);
489 return ERR_CAST(np);
490 }
491
492 INIT_LIST_HEAD(&tpg_np->tpg_np_list);
493 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
494 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
495 spin_lock_init(&tpg_np->tpg_np_parent_lock);
496 init_completion(&tpg_np->tpg_np_comp);
497 kref_init(&tpg_np->tpg_np_kref);
498 tpg_np->tpg_np = np;
499 tpg_np->tpg = tpg;
500
501 spin_lock(&tpg->tpg_np_lock);
502 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
503 tpg->num_tpg_nps++;
504 if (tpg->tpg_tiqn)
505 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
506 spin_unlock(&tpg->tpg_np_lock);
507
508 if (tpg_np_parent) {
509 tpg_np->tpg_np_parent = tpg_np_parent;
510 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
511 list_add_tail(&tpg_np->tpg_np_child_list,
512 &tpg_np_parent->tpg_np_parent_list);
513 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
514 }
515
516 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n",
517 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt,
518 np->np_transport->name);
519
520 return tpg_np;
521}
522
523static int iscsit_tpg_release_np(
524 struct iscsi_tpg_np *tpg_np,
525 struct iscsi_portal_group *tpg,
526 struct iscsi_np *np)
527{
528 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true);
529
530 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n",
531 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt,
532 np->np_transport->name);
533
534 tpg_np->tpg_np = NULL;
535 tpg_np->tpg = NULL;
536 kfree(tpg_np);
537
538
539
540 return iscsit_del_np(np);
541}
542
543int iscsit_tpg_del_network_portal(
544 struct iscsi_portal_group *tpg,
545 struct iscsi_tpg_np *tpg_np)
546{
547 struct iscsi_np *np;
548 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
549 int ret = 0;
550
551 np = tpg_np->tpg_np;
552 if (!np) {
553 pr_err("Unable to locate struct iscsi_np from"
554 " struct iscsi_tpg_np\n");
555 return -EINVAL;
556 }
557
558 if (!tpg_np->tpg_np_parent) {
559
560
561
562
563
564 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
565 &tpg_np->tpg_np_parent_list,
566 tpg_np_child_list) {
567 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
568 if (ret < 0)
569 pr_err("iscsit_tpg_del_network_portal()"
570 " failed: %d\n", ret);
571 }
572 } else {
573
574
575
576
577 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
578 list_del(&tpg_np->tpg_np_child_list);
579 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
580 }
581
582 spin_lock(&tpg->tpg_np_lock);
583 list_del(&tpg_np->tpg_np_list);
584 tpg->num_tpg_nps--;
585 if (tpg->tpg_tiqn)
586 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
587 spin_unlock(&tpg->tpg_np_lock);
588
589 return iscsit_tpg_release_np(tpg_np, tpg, np);
590}
591
592int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
593{
594 unsigned char buf1[256], buf2[256], *none = NULL;
595 int len;
596 struct iscsi_param *param;
597 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
598
599 if ((authentication != 1) && (authentication != 0)) {
600 pr_err("Illegal value for authentication parameter:"
601 " %u, ignoring request.\n", authentication);
602 return -EINVAL;
603 }
604
605 memset(buf1, 0, sizeof(buf1));
606 memset(buf2, 0, sizeof(buf2));
607
608 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
609 if (!param)
610 return -EINVAL;
611
612 if (authentication) {
613 snprintf(buf1, sizeof(buf1), "%s", param->value);
614 none = strstr(buf1, NONE);
615 if (!none)
616 goto out;
617 if (!strncmp(none + 4, ",", 1)) {
618 if (!strcmp(buf1, none))
619 sprintf(buf2, "%s", none+5);
620 else {
621 none--;
622 *none = '\0';
623 len = sprintf(buf2, "%s", buf1);
624 none += 5;
625 sprintf(buf2 + len, "%s", none);
626 }
627 } else {
628 none--;
629 *none = '\0';
630 sprintf(buf2, "%s", buf1);
631 }
632 if (iscsi_update_param_value(param, buf2) < 0)
633 return -EINVAL;
634 } else {
635 snprintf(buf1, sizeof(buf1), "%s", param->value);
636 none = strstr(buf1, NONE);
637 if (none)
638 goto out;
639 strncat(buf1, ",", strlen(","));
640 strncat(buf1, NONE, strlen(NONE));
641 if (iscsi_update_param_value(param, buf1) < 0)
642 return -EINVAL;
643 }
644
645out:
646 a->authentication = authentication;
647 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
648 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
649
650 return 0;
651}
652
653int iscsit_ta_login_timeout(
654 struct iscsi_portal_group *tpg,
655 u32 login_timeout)
656{
657 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
658
659 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
660 pr_err("Requested Login Timeout %u larger than maximum"
661 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
662 return -EINVAL;
663 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
664 pr_err("Requested Logout Timeout %u smaller than"
665 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
666 return -EINVAL;
667 }
668
669 a->login_timeout = login_timeout;
670 pr_debug("Set Logout Timeout to %u for Target Portal Group"
671 " %hu\n", a->login_timeout, tpg->tpgt);
672
673 return 0;
674}
675
676int iscsit_ta_netif_timeout(
677 struct iscsi_portal_group *tpg,
678 u32 netif_timeout)
679{
680 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
681
682 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
683 pr_err("Requested Network Interface Timeout %u larger"
684 " than maximum %u\n", netif_timeout,
685 TA_NETIF_TIMEOUT_MAX);
686 return -EINVAL;
687 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
688 pr_err("Requested Network Interface Timeout %u smaller"
689 " than minimum %u\n", netif_timeout,
690 TA_NETIF_TIMEOUT_MIN);
691 return -EINVAL;
692 }
693
694 a->netif_timeout = netif_timeout;
695 pr_debug("Set Network Interface Timeout to %u for"
696 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
697
698 return 0;
699}
700
701int iscsit_ta_generate_node_acls(
702 struct iscsi_portal_group *tpg,
703 u32 flag)
704{
705 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
706
707 if ((flag != 0) && (flag != 1)) {
708 pr_err("Illegal value %d\n", flag);
709 return -EINVAL;
710 }
711
712 a->generate_node_acls = flag;
713 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
714 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
715
716 if (flag == 1 && a->cache_dynamic_acls == 0) {
717 pr_debug("Explicitly setting cache_dynamic_acls=1 when "
718 "generate_node_acls=1\n");
719 a->cache_dynamic_acls = 1;
720 }
721
722 return 0;
723}
724
725int iscsit_ta_default_cmdsn_depth(
726 struct iscsi_portal_group *tpg,
727 u32 tcq_depth)
728{
729 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
730
731 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
732 pr_err("Requested Default Queue Depth: %u larger"
733 " than maximum %u\n", tcq_depth,
734 TA_DEFAULT_CMDSN_DEPTH_MAX);
735 return -EINVAL;
736 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
737 pr_err("Requested Default Queue Depth: %u smaller"
738 " than minimum %u\n", tcq_depth,
739 TA_DEFAULT_CMDSN_DEPTH_MIN);
740 return -EINVAL;
741 }
742
743 a->default_cmdsn_depth = tcq_depth;
744 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
745 tpg->tpgt, a->default_cmdsn_depth);
746
747 return 0;
748}
749
750int iscsit_ta_cache_dynamic_acls(
751 struct iscsi_portal_group *tpg,
752 u32 flag)
753{
754 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
755
756 if ((flag != 0) && (flag != 1)) {
757 pr_err("Illegal value %d\n", flag);
758 return -EINVAL;
759 }
760
761 if (a->generate_node_acls == 1 && flag == 0) {
762 pr_debug("Skipping cache_dynamic_acls=0 when"
763 " generate_node_acls=1\n");
764 return 0;
765 }
766
767 a->cache_dynamic_acls = flag;
768 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
769 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
770 "Enabled" : "Disabled");
771
772 return 0;
773}
774
775int iscsit_ta_demo_mode_write_protect(
776 struct iscsi_portal_group *tpg,
777 u32 flag)
778{
779 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
780
781 if ((flag != 0) && (flag != 1)) {
782 pr_err("Illegal value %d\n", flag);
783 return -EINVAL;
784 }
785
786 a->demo_mode_write_protect = flag;
787 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
788 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
789
790 return 0;
791}
792
793int iscsit_ta_prod_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->prod_mode_write_protect = flag;
805 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
806 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
807 "ON" : "OFF");
808
809 return 0;
810}
811
812int iscsit_ta_demo_mode_discovery(
813 struct iscsi_portal_group *tpg,
814 u32 flag)
815{
816 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
817
818 if ((flag != 0) && (flag != 1)) {
819 pr_err("Illegal value %d\n", flag);
820 return -EINVAL;
821 }
822
823 a->demo_mode_discovery = flag;
824 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:"
825 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ?
826 "ON" : "OFF");
827
828 return 0;
829}
830
831int iscsit_ta_default_erl(
832 struct iscsi_portal_group *tpg,
833 u32 default_erl)
834{
835 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
836
837 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) {
838 pr_err("Illegal value for default_erl: %u\n", default_erl);
839 return -EINVAL;
840 }
841
842 a->default_erl = default_erl;
843 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl);
844
845 return 0;
846}
847
848int iscsit_ta_t10_pi(
849 struct iscsi_portal_group *tpg,
850 u32 flag)
851{
852 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
853
854 if ((flag != 0) && (flag != 1)) {
855 pr_err("Illegal value %d\n", flag);
856 return -EINVAL;
857 }
858
859 a->t10_pi = flag;
860 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:"
861 " %s\n", tpg->tpgt, (a->t10_pi) ?
862 "ON" : "OFF");
863
864 return 0;
865}
866
867int iscsit_ta_fabric_prot_type(
868 struct iscsi_portal_group *tpg,
869 u32 prot_type)
870{
871 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
872
873 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) {
874 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type);
875 return -EINVAL;
876 }
877
878 a->fabric_prot_type = prot_type;
879 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n",
880 tpg->tpgt, prot_type);
881
882 return 0;
883}
884
885int iscsit_ta_tpg_enabled_sendtargets(
886 struct iscsi_portal_group *tpg,
887 u32 flag)
888{
889 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
890
891 if ((flag != 0) && (flag != 1)) {
892 pr_err("Illegal value %d\n", flag);
893 return -EINVAL;
894 }
895
896 a->tpg_enabled_sendtargets = flag;
897 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:"
898 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF");
899
900 return 0;
901}
902
903int iscsit_ta_login_keys_workaround(
904 struct iscsi_portal_group *tpg,
905 u32 flag)
906{
907 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
908
909 if ((flag != 0) && (flag != 1)) {
910 pr_err("Illegal value %d\n", flag);
911 return -EINVAL;
912 }
913
914 a->login_keys_workaround = flag;
915 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s ",
916 tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF");
917
918 return 0;
919}
920
