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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 |
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); | |
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 | ||
57 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); | |
58 | ||
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, | |
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; | |
108 | out: | |
109 | if (tpg->sid == 1) | |
110 | core_tpg_deregister(&tpg->tpg_se_tpg); | |
111 | kfree(tpg); | |
112 | return -1; | |
113 | } | |
114 | ||
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 | ||
128 | struct 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 | ||
163 | int 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 | ||
172 | void iscsit_put_tpg(struct iscsi_portal_group *tpg) | |
173 | { | |
174 | mutex_unlock(&tpg->tpg_access_lock); | |
175 | } | |
176 | ||
177 | static 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 | ||
14f4b54f | 187 | tpg_np->tpg_np->enabled = false; |
a91eb7d9 | 188 | iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); |
e48354ce NB |
189 | } |
190 | ||
191 | void iscsit_clear_tpg_np_login_threads( | |
a91eb7d9 NB |
192 | struct iscsi_portal_group *tpg, |
193 | bool shutdown) | |
e48354ce NB |
194 | { |
195 | struct iscsi_tpg_np *tpg_np; | |
196 | ||
197 | spin_lock(&tpg->tpg_np_lock); | |
198 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { | |
199 | if (!tpg_np->tpg_np) { | |
200 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); | |
201 | continue; | |
202 | } | |
203 | spin_unlock(&tpg->tpg_np_lock); | |
a91eb7d9 | 204 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); |
e48354ce NB |
205 | spin_lock(&tpg->tpg_np_lock); |
206 | } | |
207 | spin_unlock(&tpg->tpg_np_lock); | |
208 | } | |
209 | ||
210 | void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) | |
211 | { | |
212 | iscsi_print_params(tpg->param_list); | |
213 | } | |
214 | ||
215 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) | |
216 | { | |
217 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
218 | ||
219 | a->authentication = TA_AUTHENTICATION; | |
220 | a->login_timeout = TA_LOGIN_TIMEOUT; | |
221 | a->netif_timeout = TA_NETIF_TIMEOUT; | |
222 | a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; | |
223 | a->generate_node_acls = TA_GENERATE_NODE_ACLS; | |
224 | a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; | |
225 | a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; | |
226 | a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; | |
4c54b6cf | 227 | a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; |
d1fa7a1d | 228 | a->default_erl = TA_DEFAULT_ERL; |
5b168dcd | 229 | a->t10_pi = TA_DEFAULT_T10_PI; |
e48354ce NB |
230 | } |
231 | ||
232 | int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) | |
233 | { | |
234 | if (tpg->tpg_state != TPG_STATE_FREE) { | |
235 | pr_err("Unable to add iSCSI Target Portal Group: %d" | |
236 | " while not in TPG_STATE_FREE state.\n", tpg->tpgt); | |
237 | return -EEXIST; | |
238 | } | |
239 | iscsit_set_default_tpg_attribs(tpg); | |
240 | ||
241 | if (iscsi_create_default_params(&tpg->param_list) < 0) | |
242 | goto err_out; | |
243 | ||
b7eec2cd | 244 | tpg->tpg_attrib.tpg = tpg; |
e48354ce NB |
245 | |
246 | spin_lock(&tpg->tpg_state_lock); | |
247 | tpg->tpg_state = TPG_STATE_INACTIVE; | |
248 | spin_unlock(&tpg->tpg_state_lock); | |
249 | ||
250 | spin_lock(&tiqn->tiqn_tpg_lock); | |
251 | list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); | |
252 | tiqn->tiqn_ntpgs++; | |
253 | pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", | |
254 | tiqn->tiqn, tpg->tpgt); | |
255 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
256 | ||
257 | return 0; | |
258 | err_out: | |
259 | if (tpg->param_list) { | |
260 | iscsi_release_param_list(tpg->param_list); | |
261 | tpg->param_list = NULL; | |
262 | } | |
263 | kfree(tpg); | |
264 | return -ENOMEM; | |
265 | } | |
266 | ||
267 | int iscsit_tpg_del_portal_group( | |
268 | struct iscsi_tiqn *tiqn, | |
269 | struct iscsi_portal_group *tpg, | |
270 | int force) | |
271 | { | |
272 | u8 old_state = tpg->tpg_state; | |
273 | ||
274 | spin_lock(&tpg->tpg_state_lock); | |
275 | tpg->tpg_state = TPG_STATE_INACTIVE; | |
276 | spin_unlock(&tpg->tpg_state_lock); | |
277 | ||
a91eb7d9 NB |
278 | iscsit_clear_tpg_np_login_threads(tpg, true); |
279 | ||
e48354ce NB |
280 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { |
281 | pr_err("Unable to delete iSCSI Target Portal Group:" | |
282 | " %hu while active sessions exist, and force=0\n", | |
283 | tpg->tpgt); | |
284 | tpg->tpg_state = old_state; | |
285 | return -EPERM; | |
286 | } | |
287 | ||
288 | core_tpg_clear_object_luns(&tpg->tpg_se_tpg); | |
289 | ||
290 | if (tpg->param_list) { | |
291 | iscsi_release_param_list(tpg->param_list); | |
292 | tpg->param_list = NULL; | |
293 | } | |
294 | ||
295 | core_tpg_deregister(&tpg->tpg_se_tpg); | |
296 | ||
297 | spin_lock(&tpg->tpg_state_lock); | |
298 | tpg->tpg_state = TPG_STATE_FREE; | |
299 | spin_unlock(&tpg->tpg_state_lock); | |
300 | ||
301 | spin_lock(&tiqn->tiqn_tpg_lock); | |
302 | tiqn->tiqn_ntpgs--; | |
303 | list_del(&tpg->tpg_list); | |
304 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
305 | ||
306 | pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", | |
307 | tiqn->tiqn, tpg->tpgt); | |
308 | ||
309 | kfree(tpg); | |
310 | return 0; | |
311 | } | |
312 | ||
313 | int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) | |
314 | { | |
315 | struct iscsi_param *param; | |
316 | struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; | |
617a0c2e | 317 | int ret; |
e48354ce NB |
318 | |
319 | spin_lock(&tpg->tpg_state_lock); | |
320 | if (tpg->tpg_state == TPG_STATE_ACTIVE) { | |
321 | pr_err("iSCSI target portal group: %hu is already" | |
322 | " active, ignoring request.\n", tpg->tpgt); | |
323 | spin_unlock(&tpg->tpg_state_lock); | |
324 | return -EINVAL; | |
325 | } | |
326 | /* | |
327 | * Make sure that AuthMethod does not contain None as an option | |
328 | * unless explictly disabled. Set the default to CHAP if authentication | |
329 | * is enforced (as per default), and remove the NONE option. | |
330 | */ | |
331 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); | |
332 | if (!param) { | |
333 | spin_unlock(&tpg->tpg_state_lock); | |
617a0c2e | 334 | return -EINVAL; |
e48354ce NB |
335 | } |
336 | ||
b7eec2cd | 337 | if (tpg->tpg_attrib.authentication) { |
617a0c2e AG |
338 | if (!strcmp(param->value, NONE)) { |
339 | ret = iscsi_update_param_value(param, CHAP); | |
340 | if (ret) | |
341 | goto err; | |
e48354ce | 342 | } |
617a0c2e AG |
343 | |
344 | ret = iscsit_ta_authentication(tpg, 1); | |
345 | if (ret < 0) | |
346 | goto err; | |
e48354ce NB |
347 | } |
348 | ||
349 | tpg->tpg_state = TPG_STATE_ACTIVE; | |
350 | spin_unlock(&tpg->tpg_state_lock); | |
351 | ||
352 | spin_lock(&tiqn->tiqn_tpg_lock); | |
353 | tiqn->tiqn_active_tpgs++; | |
354 | pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", | |
355 | tpg->tpgt); | |
356 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
357 | ||
358 | return 0; | |
617a0c2e AG |
359 | |
360 | err: | |
361 | spin_unlock(&tpg->tpg_state_lock); | |
362 | return ret; | |
e48354ce NB |
363 | } |
364 | ||
365 | int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) | |
366 | { | |
367 | struct iscsi_tiqn *tiqn; | |
368 | u8 old_state = tpg->tpg_state; | |
369 | ||
370 | spin_lock(&tpg->tpg_state_lock); | |
371 | if (tpg->tpg_state == TPG_STATE_INACTIVE) { | |
372 | pr_err("iSCSI Target Portal Group: %hu is already" | |
373 | " inactive, ignoring request.\n", tpg->tpgt); | |
374 | spin_unlock(&tpg->tpg_state_lock); | |
375 | return -EINVAL; | |
376 | } | |
377 | tpg->tpg_state = TPG_STATE_INACTIVE; | |
378 | spin_unlock(&tpg->tpg_state_lock); | |
379 | ||
a91eb7d9 | 380 | iscsit_clear_tpg_np_login_threads(tpg, false); |
e48354ce NB |
381 | |
382 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { | |
383 | spin_lock(&tpg->tpg_state_lock); | |
384 | tpg->tpg_state = old_state; | |
385 | spin_unlock(&tpg->tpg_state_lock); | |
386 | pr_err("Unable to disable iSCSI Target Portal Group:" | |
387 | " %hu while active sessions exist, and force=0\n", | |
388 | tpg->tpgt); | |
389 | return -EPERM; | |
390 | } | |
391 | ||
392 | tiqn = tpg->tpg_tiqn; | |
393 | if (!tiqn || (tpg == iscsit_global->discovery_tpg)) | |
394 | return 0; | |
395 | ||
396 | spin_lock(&tiqn->tiqn_tpg_lock); | |
397 | tiqn->tiqn_active_tpgs--; | |
398 | pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", | |
399 | tpg->tpgt); | |
400 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
401 | ||
402 | return 0; | |
403 | } | |
404 | ||
405 | struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( | |
406 | struct iscsi_session *sess) | |
407 | { | |
408 | struct se_session *se_sess = sess->se_sess; | |
409 | struct se_node_acl *se_nacl = se_sess->se_node_acl; | |
410 | struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, | |
411 | se_node_acl); | |
412 | ||
413 | return &acl->node_attrib; | |
414 | } | |
415 | ||
416 | struct iscsi_tpg_np *iscsit_tpg_locate_child_np( | |
417 | struct iscsi_tpg_np *tpg_np, | |
418 | int network_transport) | |
419 | { | |
420 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; | |
421 | ||
422 | spin_lock(&tpg_np->tpg_np_parent_lock); | |
423 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, | |
424 | &tpg_np->tpg_np_parent_list, tpg_np_child_list) { | |
425 | if (tpg_np_child->tpg_np->np_network_transport == | |
426 | network_transport) { | |
427 | spin_unlock(&tpg_np->tpg_np_parent_lock); | |
428 | return tpg_np_child; | |
429 | } | |
430 | } | |
431 | spin_unlock(&tpg_np->tpg_np_parent_lock); | |
432 | ||
433 | return NULL; | |
434 | } | |
435 | ||
6e545935 NB |
436 | static bool iscsit_tpg_check_network_portal( |
437 | struct iscsi_tiqn *tiqn, | |
438 | struct __kernel_sockaddr_storage *sockaddr, | |
439 | int network_transport) | |
440 | { | |
441 | struct iscsi_portal_group *tpg; | |
442 | struct iscsi_tpg_np *tpg_np; | |
443 | struct iscsi_np *np; | |
444 | bool match = false; | |
445 | ||
446 | spin_lock(&tiqn->tiqn_tpg_lock); | |
447 | list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { | |
448 | ||
449 | spin_lock(&tpg->tpg_np_lock); | |
450 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { | |
451 | np = tpg_np->tpg_np; | |
452 | ||
453 | match = iscsit_check_np_match(sockaddr, np, | |
454 | network_transport); | |
455 | if (match == true) | |
456 | break; | |
457 | } | |
458 | spin_unlock(&tpg->tpg_np_lock); | |
459 | } | |
460 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
461 | ||
462 | return match; | |
463 | } | |
464 | ||
e48354ce NB |
465 | struct iscsi_tpg_np *iscsit_tpg_add_network_portal( |
466 | struct iscsi_portal_group *tpg, | |
467 | struct __kernel_sockaddr_storage *sockaddr, | |
468 | char *ip_str, | |
469 | struct iscsi_tpg_np *tpg_np_parent, | |
470 | int network_transport) | |
471 | { | |
472 | struct iscsi_np *np; | |
473 | struct iscsi_tpg_np *tpg_np; | |
474 | ||
6e545935 NB |
475 | if (!tpg_np_parent) { |
476 | if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, | |
477 | network_transport) == true) { | |
478 | pr_err("Network Portal: %s already exists on a" | |
479 | " different TPG on %s\n", ip_str, | |
480 | tpg->tpg_tiqn->tiqn); | |
481 | return ERR_PTR(-EEXIST); | |
482 | } | |
483 | } | |
484 | ||
e48354ce NB |
485 | tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); |
486 | if (!tpg_np) { | |
487 | pr_err("Unable to allocate memory for" | |
488 | " struct iscsi_tpg_np.\n"); | |
489 | return ERR_PTR(-ENOMEM); | |
490 | } | |
491 | ||
492 | np = iscsit_add_np(sockaddr, ip_str, network_transport); | |
493 | if (IS_ERR(np)) { | |
494 | kfree(tpg_np); | |
495 | return ERR_CAST(np); | |
496 | } | |
497 | ||
498 | INIT_LIST_HEAD(&tpg_np->tpg_np_list); | |
499 | INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); | |
500 | INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); | |
501 | spin_lock_init(&tpg_np->tpg_np_parent_lock); | |
d381a801 NB |
502 | init_completion(&tpg_np->tpg_np_comp); |
503 | kref_init(&tpg_np->tpg_np_kref); | |
e48354ce | 504 | tpg_np->tpg_np = np; |
5b168dcd | 505 | np->tpg_np = tpg_np; |
e48354ce NB |
506 | tpg_np->tpg = tpg; |
507 | ||
508 | spin_lock(&tpg->tpg_np_lock); | |
509 | list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); | |
510 | tpg->num_tpg_nps++; | |
511 | if (tpg->tpg_tiqn) | |
512 | tpg->tpg_tiqn->tiqn_num_tpg_nps++; | |
513 | spin_unlock(&tpg->tpg_np_lock); | |
514 | ||
515 | if (tpg_np_parent) { | |
516 | tpg_np->tpg_np_parent = tpg_np_parent; | |
517 | spin_lock(&tpg_np_parent->tpg_np_parent_lock); | |
518 | list_add_tail(&tpg_np->tpg_np_child_list, | |
519 | &tpg_np_parent->tpg_np_parent_list); | |
520 | spin_unlock(&tpg_np_parent->tpg_np_parent_lock); | |
521 | } | |
522 | ||
523 | pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", | |
524 | tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, | |
baa4d64b | 525 | np->np_transport->name); |
e48354ce NB |
526 | |
527 | return tpg_np; | |
528 | } | |
529 | ||
530 | static int iscsit_tpg_release_np( | |
531 | struct iscsi_tpg_np *tpg_np, | |
532 | struct iscsi_portal_group *tpg, | |
533 | struct iscsi_np *np) | |
534 | { | |
a91eb7d9 | 535 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); |
e48354ce NB |
536 | |
537 | pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", | |
538 | tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, | |
baa4d64b | 539 | np->np_transport->name); |
e48354ce NB |
540 | |
541 | tpg_np->tpg_np = NULL; | |
542 | tpg_np->tpg = NULL; | |
543 | kfree(tpg_np); | |
544 | /* | |
545 | * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. | |
546 | */ | |
547 | return iscsit_del_np(np); | |
548 | } | |
549 | ||
550 | int iscsit_tpg_del_network_portal( | |
551 | struct iscsi_portal_group *tpg, | |
552 | struct iscsi_tpg_np *tpg_np) | |
553 | { | |
554 | struct iscsi_np *np; | |
555 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; | |
556 | int ret = 0; | |
557 | ||
558 | np = tpg_np->tpg_np; | |
559 | if (!np) { | |
560 | pr_err("Unable to locate struct iscsi_np from" | |
561 | " struct iscsi_tpg_np\n"); | |
562 | return -EINVAL; | |
563 | } | |
564 | ||
565 | if (!tpg_np->tpg_np_parent) { | |
566 | /* | |
567 | * We are the parent tpg network portal. Release all of the | |
568 | * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent | |
569 | * list first. | |
570 | */ | |
571 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, | |
572 | &tpg_np->tpg_np_parent_list, | |
573 | tpg_np_child_list) { | |
574 | ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); | |
575 | if (ret < 0) | |
576 | pr_err("iscsit_tpg_del_network_portal()" | |
577 | " failed: %d\n", ret); | |
578 | } | |
579 | } else { | |
580 | /* | |
581 | * We are not the parent ISCSI_TCP tpg network portal. Release | |
582 | * our own network portals from the child list. | |
583 | */ | |
584 | spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); | |
585 | list_del(&tpg_np->tpg_np_child_list); | |
586 | spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); | |
587 | } | |
588 | ||
589 | spin_lock(&tpg->tpg_np_lock); | |
590 | list_del(&tpg_np->tpg_np_list); | |
591 | tpg->num_tpg_nps--; | |
592 | if (tpg->tpg_tiqn) | |
593 | tpg->tpg_tiqn->tiqn_num_tpg_nps--; | |
594 | spin_unlock(&tpg->tpg_np_lock); | |
595 | ||
596 | return iscsit_tpg_release_np(tpg_np, tpg, np); | |
597 | } | |
598 | ||
599 | int iscsit_tpg_set_initiator_node_queue_depth( | |
600 | struct iscsi_portal_group *tpg, | |
601 | unsigned char *initiatorname, | |
602 | u32 queue_depth, | |
603 | int force) | |
604 | { | |
605 | return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, | |
606 | initiatorname, queue_depth, force); | |
607 | } | |
608 | ||
609 | int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) | |
610 | { | |
611 | unsigned char buf1[256], buf2[256], *none = NULL; | |
612 | int len; | |
613 | struct iscsi_param *param; | |
614 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
615 | ||
616 | if ((authentication != 1) && (authentication != 0)) { | |
617 | pr_err("Illegal value for authentication parameter:" | |
618 | " %u, ignoring request.\n", authentication); | |
617a0c2e | 619 | return -EINVAL; |
e48354ce NB |
620 | } |
621 | ||
622 | memset(buf1, 0, sizeof(buf1)); | |
623 | memset(buf2, 0, sizeof(buf2)); | |
624 | ||
625 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); | |
626 | if (!param) | |
627 | return -EINVAL; | |
628 | ||
629 | if (authentication) { | |
630 | snprintf(buf1, sizeof(buf1), "%s", param->value); | |
631 | none = strstr(buf1, NONE); | |
632 | if (!none) | |
633 | goto out; | |
634 | if (!strncmp(none + 4, ",", 1)) { | |
635 | if (!strcmp(buf1, none)) | |
636 | sprintf(buf2, "%s", none+5); | |
637 | else { | |
638 | none--; | |
639 | *none = '\0'; | |
640 | len = sprintf(buf2, "%s", buf1); | |
641 | none += 5; | |
642 | sprintf(buf2 + len, "%s", none); | |
643 | } | |
644 | } else { | |
645 | none--; | |
646 | *none = '\0'; | |
647 | sprintf(buf2, "%s", buf1); | |
648 | } | |
649 | if (iscsi_update_param_value(param, buf2) < 0) | |
650 | return -EINVAL; | |
651 | } else { | |
652 | snprintf(buf1, sizeof(buf1), "%s", param->value); | |
653 | none = strstr(buf1, NONE); | |
ee1b1b9c | 654 | if (none) |
e48354ce NB |
655 | goto out; |
656 | strncat(buf1, ",", strlen(",")); | |
657 | strncat(buf1, NONE, strlen(NONE)); | |
658 | if (iscsi_update_param_value(param, buf1) < 0) | |
659 | return -EINVAL; | |
660 | } | |
661 | ||
662 | out: | |
663 | a->authentication = authentication; | |
664 | pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", | |
665 | a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); | |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
670 | int iscsit_ta_login_timeout( | |
671 | struct iscsi_portal_group *tpg, | |
672 | u32 login_timeout) | |
673 | { | |
674 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
675 | ||
676 | if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { | |
677 | pr_err("Requested Login Timeout %u larger than maximum" | |
678 | " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); | |
679 | return -EINVAL; | |
680 | } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { | |
681 | pr_err("Requested Logout Timeout %u smaller than" | |
682 | " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); | |
683 | return -EINVAL; | |
684 | } | |
685 | ||
686 | a->login_timeout = login_timeout; | |
687 | pr_debug("Set Logout Timeout to %u for Target Portal Group" | |
688 | " %hu\n", a->login_timeout, tpg->tpgt); | |
689 | ||
690 | return 0; | |
691 | } | |
692 | ||
693 | int iscsit_ta_netif_timeout( | |
694 | struct iscsi_portal_group *tpg, | |
695 | u32 netif_timeout) | |
696 | { | |
697 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
698 | ||
699 | if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { | |
700 | pr_err("Requested Network Interface Timeout %u larger" | |
701 | " than maximum %u\n", netif_timeout, | |
702 | TA_NETIF_TIMEOUT_MAX); | |
703 | return -EINVAL; | |
704 | } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { | |
705 | pr_err("Requested Network Interface Timeout %u smaller" | |
706 | " than minimum %u\n", netif_timeout, | |
707 | TA_NETIF_TIMEOUT_MIN); | |
708 | return -EINVAL; | |
709 | } | |
710 | ||
711 | a->netif_timeout = netif_timeout; | |
712 | pr_debug("Set Network Interface Timeout to %u for" | |
713 | " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); | |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
718 | int iscsit_ta_generate_node_acls( | |
719 | struct iscsi_portal_group *tpg, | |
720 | u32 flag) | |
721 | { | |
722 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
723 | ||
724 | if ((flag != 0) && (flag != 1)) { | |
725 | pr_err("Illegal value %d\n", flag); | |
726 | return -EINVAL; | |
727 | } | |
728 | ||
729 | a->generate_node_acls = flag; | |
730 | pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", | |
731 | tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); | |
732 | ||
38b11bae NB |
733 | if (flag == 1 && a->cache_dynamic_acls == 0) { |
734 | pr_debug("Explicitly setting cache_dynamic_acls=1 when " | |
735 | "generate_node_acls=1\n"); | |
736 | a->cache_dynamic_acls = 1; | |
737 | } | |
738 | ||
e48354ce NB |
739 | return 0; |
740 | } | |
741 | ||
742 | int iscsit_ta_default_cmdsn_depth( | |
743 | struct iscsi_portal_group *tpg, | |
744 | u32 tcq_depth) | |
745 | { | |
746 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
747 | ||
748 | if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { | |
749 | pr_err("Requested Default Queue Depth: %u larger" | |
750 | " than maximum %u\n", tcq_depth, | |
751 | TA_DEFAULT_CMDSN_DEPTH_MAX); | |
752 | return -EINVAL; | |
753 | } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { | |
754 | pr_err("Requested Default Queue Depth: %u smaller" | |
755 | " than minimum %u\n", tcq_depth, | |
756 | TA_DEFAULT_CMDSN_DEPTH_MIN); | |
757 | return -EINVAL; | |
758 | } | |
759 | ||
760 | a->default_cmdsn_depth = tcq_depth; | |
761 | pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", | |
762 | tpg->tpgt, a->default_cmdsn_depth); | |
763 | ||
764 | return 0; | |
765 | } | |
766 | ||
767 | int iscsit_ta_cache_dynamic_acls( | |
768 | struct iscsi_portal_group *tpg, | |
769 | u32 flag) | |
770 | { | |
771 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
772 | ||
773 | if ((flag != 0) && (flag != 1)) { | |
774 | pr_err("Illegal value %d\n", flag); | |
775 | return -EINVAL; | |
776 | } | |
777 | ||
38b11bae NB |
778 | if (a->generate_node_acls == 1 && flag == 0) { |
779 | pr_debug("Skipping cache_dynamic_acls=0 when" | |
780 | " generate_node_acls=1\n"); | |
781 | return 0; | |
782 | } | |
783 | ||
e48354ce NB |
784 | a->cache_dynamic_acls = flag; |
785 | pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" | |
786 | " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? | |
787 | "Enabled" : "Disabled"); | |
788 | ||
789 | return 0; | |
790 | } | |
791 | ||
792 | int iscsit_ta_demo_mode_write_protect( | |
793 | struct iscsi_portal_group *tpg, | |
794 | u32 flag) | |
795 | { | |
796 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
797 | ||
798 | if ((flag != 0) && (flag != 1)) { | |
799 | pr_err("Illegal value %d\n", flag); | |
800 | return -EINVAL; | |
801 | } | |
802 | ||
803 | a->demo_mode_write_protect = flag; | |
804 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", | |
805 | tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
810 | int iscsit_ta_prod_mode_write_protect( | |
811 | struct iscsi_portal_group *tpg, | |
812 | u32 flag) | |
813 | { | |
814 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
815 | ||
816 | if ((flag != 0) && (flag != 1)) { | |
817 | pr_err("Illegal value %d\n", flag); | |
818 | return -EINVAL; | |
819 | } | |
820 | ||
821 | a->prod_mode_write_protect = flag; | |
822 | pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" | |
823 | " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? | |
824 | "ON" : "OFF"); | |
825 | ||
826 | return 0; | |
827 | } | |
4c54b6cf TG |
828 | |
829 | int iscsit_ta_demo_mode_discovery( | |
830 | struct iscsi_portal_group *tpg, | |
831 | u32 flag) | |
832 | { | |
833 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
834 | ||
835 | if ((flag != 0) && (flag != 1)) { | |
836 | pr_err("Illegal value %d\n", flag); | |
837 | return -EINVAL; | |
838 | } | |
839 | ||
840 | a->demo_mode_discovery = flag; | |
841 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" | |
842 | " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? | |
843 | "ON" : "OFF"); | |
844 | ||
845 | return 0; | |
846 | } | |
d1fa7a1d NB |
847 | |
848 | int iscsit_ta_default_erl( | |
849 | struct iscsi_portal_group *tpg, | |
850 | u32 default_erl) | |
851 | { | |
852 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
853 | ||
854 | if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { | |
855 | pr_err("Illegal value for default_erl: %u\n", default_erl); | |
856 | return -EINVAL; | |
857 | } | |
858 | ||
859 | a->default_erl = default_erl; | |
860 | pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); | |
861 | ||
862 | return 0; | |
863 | } | |
8085176f SG |
864 | |
865 | int iscsit_ta_t10_pi( | |
866 | struct iscsi_portal_group *tpg, | |
867 | u32 flag) | |
868 | { | |
869 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
870 | ||
871 | if ((flag != 0) && (flag != 1)) { | |
872 | pr_err("Illegal value %d\n", flag); | |
873 | return -EINVAL; | |
874 | } | |
875 | ||
876 | a->t10_pi = flag; | |
877 | pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" | |
878 | " %s\n", tpg->tpgt, (a->t10_pi) ? | |
879 | "ON" : "OFF"); | |
880 | ||
881 | return 0; | |
882 | } |