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