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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 | |
67f091f2 | 22 | #include <target/iscsi/iscsi_target_core.h> |
e48354ce NB |
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 | ||
baa4d64b NB |
31 | #include <target/iscsi/iscsi_transport.h> |
32 | ||
e48354ce NB |
33 | struct 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); | |
a91eb7d9 | 49 | sema_init(&tpg->np_login_sem, 1); |
e48354ce NB |
50 | spin_lock_init(&tpg->tpg_state_lock); |
51 | spin_lock_init(&tpg->tpg_np_lock); | |
52 | ||
53 | return tpg; | |
54 | } | |
55 | ||
56 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); | |
57 | ||
58 | int 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 | } | |
bc0c94b1 NB |
69 | /* |
70 | * Save iscsi_ops pointer for special case discovery TPG that | |
71 | * doesn't exist as se_wwn->wwn_group within configfs. | |
72 | */ | |
73 | tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops; | |
74 | ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1); | |
e48354ce NB |
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 | { | |
ee7619f2 | 166 | return mutex_lock_interruptible(&tpg->tpg_access_lock); |
e48354ce NB |
167 | } |
168 | ||
169 | void iscsit_put_tpg(struct iscsi_portal_group *tpg) | |
170 | { | |
171 | mutex_unlock(&tpg->tpg_access_lock); | |
172 | } | |
173 | ||
174 | static void iscsit_clear_tpg_np_login_thread( | |
175 | struct iscsi_tpg_np *tpg_np, | |
a91eb7d9 NB |
176 | struct iscsi_portal_group *tpg, |
177 | bool shutdown) | |
e48354ce NB |
178 | { |
179 | if (!tpg_np->tpg_np) { | |
180 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); | |
181 | return; | |
182 | } | |
183 | ||
2363d196 NB |
184 | if (shutdown) |
185 | tpg_np->tpg_np->enabled = false; | |
a91eb7d9 | 186 | iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); |
e48354ce NB |
187 | } |
188 | ||
5256ffdb | 189 | static void iscsit_clear_tpg_np_login_threads( |
a91eb7d9 NB |
190 | struct iscsi_portal_group *tpg, |
191 | bool shutdown) | |
e48354ce NB |
192 | { |
193 | struct iscsi_tpg_np *tpg_np; | |
194 | ||
195 | spin_lock(&tpg->tpg_np_lock); | |
196 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { | |
197 | if (!tpg_np->tpg_np) { | |
198 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); | |
199 | continue; | |
200 | } | |
201 | spin_unlock(&tpg->tpg_np_lock); | |
a91eb7d9 | 202 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); |
e48354ce NB |
203 | spin_lock(&tpg->tpg_np_lock); |
204 | } | |
205 | spin_unlock(&tpg->tpg_np_lock); | |
206 | } | |
207 | ||
208 | void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) | |
209 | { | |
210 | iscsi_print_params(tpg->param_list); | |
211 | } | |
212 | ||
213 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) | |
214 | { | |
215 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
216 | ||
217 | a->authentication = TA_AUTHENTICATION; | |
218 | a->login_timeout = TA_LOGIN_TIMEOUT; | |
219 | a->netif_timeout = TA_NETIF_TIMEOUT; | |
220 | a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; | |
221 | a->generate_node_acls = TA_GENERATE_NODE_ACLS; | |
222 | a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; | |
223 | a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; | |
224 | a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; | |
4c54b6cf | 225 | a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; |
d1fa7a1d | 226 | a->default_erl = TA_DEFAULT_ERL; |
5b168dcd | 227 | a->t10_pi = TA_DEFAULT_T10_PI; |
901c04a3 | 228 | a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; |
e48354ce NB |
229 | } |
230 | ||
231 | int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) | |
232 | { | |
233 | if (tpg->tpg_state != TPG_STATE_FREE) { | |
234 | pr_err("Unable to add iSCSI Target Portal Group: %d" | |
235 | " while not in TPG_STATE_FREE state.\n", tpg->tpgt); | |
236 | return -EEXIST; | |
237 | } | |
238 | iscsit_set_default_tpg_attribs(tpg); | |
239 | ||
240 | if (iscsi_create_default_params(&tpg->param_list) < 0) | |
241 | goto err_out; | |
242 | ||
b7eec2cd | 243 | tpg->tpg_attrib.tpg = tpg; |
e48354ce NB |
244 | |
245 | spin_lock(&tpg->tpg_state_lock); | |
246 | tpg->tpg_state = TPG_STATE_INACTIVE; | |
247 | spin_unlock(&tpg->tpg_state_lock); | |
248 | ||
249 | spin_lock(&tiqn->tiqn_tpg_lock); | |
250 | list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); | |
251 | tiqn->tiqn_ntpgs++; | |
252 | pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", | |
253 | tiqn->tiqn, tpg->tpgt); | |
254 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
255 | ||
256 | return 0; | |
257 | err_out: | |
258 | if (tpg->param_list) { | |
259 | iscsi_release_param_list(tpg->param_list); | |
260 | tpg->param_list = NULL; | |
261 | } | |
262 | kfree(tpg); | |
263 | return -ENOMEM; | |
264 | } | |
265 | ||
266 | int iscsit_tpg_del_portal_group( | |
267 | struct iscsi_tiqn *tiqn, | |
268 | struct iscsi_portal_group *tpg, | |
269 | int force) | |
270 | { | |
271 | u8 old_state = tpg->tpg_state; | |
272 | ||
273 | spin_lock(&tpg->tpg_state_lock); | |
274 | tpg->tpg_state = TPG_STATE_INACTIVE; | |
275 | spin_unlock(&tpg->tpg_state_lock); | |
276 | ||
277 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { | |
278 | pr_err("Unable to delete iSCSI Target Portal Group:" | |
279 | " %hu while active sessions exist, and force=0\n", | |
280 | tpg->tpgt); | |
281 | tpg->tpg_state = old_state; | |
282 | return -EPERM; | |
283 | } | |
284 | ||
e48354ce NB |
285 | if (tpg->param_list) { |
286 | iscsi_release_param_list(tpg->param_list); | |
287 | tpg->param_list = NULL; | |
288 | } | |
289 | ||
290 | core_tpg_deregister(&tpg->tpg_se_tpg); | |
291 | ||
292 | spin_lock(&tpg->tpg_state_lock); | |
293 | tpg->tpg_state = TPG_STATE_FREE; | |
294 | spin_unlock(&tpg->tpg_state_lock); | |
295 | ||
296 | spin_lock(&tiqn->tiqn_tpg_lock); | |
297 | tiqn->tiqn_ntpgs--; | |
298 | list_del(&tpg->tpg_list); | |
299 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
300 | ||
301 | pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", | |
302 | tiqn->tiqn, tpg->tpgt); | |
303 | ||
304 | kfree(tpg); | |
305 | return 0; | |
306 | } | |
307 | ||
308 | int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) | |
309 | { | |
310 | struct iscsi_param *param; | |
311 | struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; | |
617a0c2e | 312 | int ret; |
e48354ce NB |
313 | |
314 | spin_lock(&tpg->tpg_state_lock); | |
315 | if (tpg->tpg_state == TPG_STATE_ACTIVE) { | |
316 | pr_err("iSCSI target portal group: %hu is already" | |
317 | " active, ignoring request.\n", tpg->tpgt); | |
318 | spin_unlock(&tpg->tpg_state_lock); | |
319 | return -EINVAL; | |
320 | } | |
321 | /* | |
322 | * Make sure that AuthMethod does not contain None as an option | |
323 | * unless explictly disabled. Set the default to CHAP if authentication | |
324 | * is enforced (as per default), and remove the NONE option. | |
325 | */ | |
326 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); | |
327 | if (!param) { | |
328 | spin_unlock(&tpg->tpg_state_lock); | |
617a0c2e | 329 | return -EINVAL; |
e48354ce NB |
330 | } |
331 | ||
b7eec2cd | 332 | if (tpg->tpg_attrib.authentication) { |
617a0c2e AG |
333 | if (!strcmp(param->value, NONE)) { |
334 | ret = iscsi_update_param_value(param, CHAP); | |
335 | if (ret) | |
336 | goto err; | |
e48354ce | 337 | } |
617a0c2e AG |
338 | |
339 | ret = iscsit_ta_authentication(tpg, 1); | |
340 | if (ret < 0) | |
341 | goto err; | |
e48354ce NB |
342 | } |
343 | ||
344 | tpg->tpg_state = TPG_STATE_ACTIVE; | |
345 | spin_unlock(&tpg->tpg_state_lock); | |
346 | ||
347 | spin_lock(&tiqn->tiqn_tpg_lock); | |
348 | tiqn->tiqn_active_tpgs++; | |
349 | pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", | |
350 | tpg->tpgt); | |
351 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
352 | ||
353 | return 0; | |
617a0c2e AG |
354 | |
355 | err: | |
356 | spin_unlock(&tpg->tpg_state_lock); | |
357 | return ret; | |
e48354ce NB |
358 | } |
359 | ||
360 | int 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 | ||
a91eb7d9 | 375 | iscsit_clear_tpg_np_login_threads(tpg, false); |
e48354ce NB |
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 | ||
400 | struct 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 | ||
411 | struct 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 | ||
6e545935 NB |
431 | static bool iscsit_tpg_check_network_portal( |
432 | struct iscsi_tiqn *tiqn, | |
433 | struct __kernel_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); | |
0bcc297e | 450 | if (match) |
6e545935 NB |
451 | break; |
452 | } | |
453 | spin_unlock(&tpg->tpg_np_lock); | |
454 | } | |
455 | spin_unlock(&tiqn->tiqn_tpg_lock); | |
456 | ||
457 | return match; | |
458 | } | |
459 | ||
e48354ce NB |
460 | struct iscsi_tpg_np *iscsit_tpg_add_network_portal( |
461 | struct iscsi_portal_group *tpg, | |
462 | struct __kernel_sockaddr_storage *sockaddr, | |
463 | char *ip_str, | |
464 | struct iscsi_tpg_np *tpg_np_parent, | |
465 | int network_transport) | |
466 | { | |
467 | struct iscsi_np *np; | |
468 | struct iscsi_tpg_np *tpg_np; | |
469 | ||
6e545935 NB |
470 | if (!tpg_np_parent) { |
471 | if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, | |
0bcc297e | 472 | network_transport)) { |
6e545935 NB |
473 | pr_err("Network Portal: %s already exists on a" |
474 | " different TPG on %s\n", ip_str, | |
475 | tpg->tpg_tiqn->tiqn); | |
476 | return ERR_PTR(-EEXIST); | |
477 | } | |
478 | } | |
479 | ||
e48354ce NB |
480 | tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); |
481 | if (!tpg_np) { | |
482 | pr_err("Unable to allocate memory for" | |
483 | " struct iscsi_tpg_np.\n"); | |
484 | return ERR_PTR(-ENOMEM); | |
485 | } | |
486 | ||
487 | np = iscsit_add_np(sockaddr, ip_str, network_transport); | |
488 | if (IS_ERR(np)) { | |
489 | kfree(tpg_np); | |
490 | return ERR_CAST(np); | |
491 | } | |
492 | ||
493 | INIT_LIST_HEAD(&tpg_np->tpg_np_list); | |
494 | INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); | |
495 | INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); | |
496 | spin_lock_init(&tpg_np->tpg_np_parent_lock); | |
d381a801 NB |
497 | init_completion(&tpg_np->tpg_np_comp); |
498 | kref_init(&tpg_np->tpg_np_kref); | |
e48354ce NB |
499 | tpg_np->tpg_np = np; |
500 | tpg_np->tpg = tpg; | |
501 | ||
502 | spin_lock(&tpg->tpg_np_lock); | |
503 | list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); | |
504 | tpg->num_tpg_nps++; | |
505 | if (tpg->tpg_tiqn) | |
506 | tpg->tpg_tiqn->tiqn_num_tpg_nps++; | |
507 | spin_unlock(&tpg->tpg_np_lock); | |
508 | ||
509 | if (tpg_np_parent) { | |
510 | tpg_np->tpg_np_parent = tpg_np_parent; | |
511 | spin_lock(&tpg_np_parent->tpg_np_parent_lock); | |
512 | list_add_tail(&tpg_np->tpg_np_child_list, | |
513 | &tpg_np_parent->tpg_np_parent_list); | |
514 | spin_unlock(&tpg_np_parent->tpg_np_parent_lock); | |
515 | } | |
516 | ||
517 | pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", | |
518 | tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, | |
baa4d64b | 519 | np->np_transport->name); |
e48354ce NB |
520 | |
521 | return tpg_np; | |
522 | } | |
523 | ||
524 | static int iscsit_tpg_release_np( | |
525 | struct iscsi_tpg_np *tpg_np, | |
526 | struct iscsi_portal_group *tpg, | |
527 | struct iscsi_np *np) | |
528 | { | |
a91eb7d9 | 529 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); |
e48354ce NB |
530 | |
531 | pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", | |
532 | tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, | |
baa4d64b | 533 | np->np_transport->name); |
e48354ce NB |
534 | |
535 | tpg_np->tpg_np = NULL; | |
536 | tpg_np->tpg = NULL; | |
537 | kfree(tpg_np); | |
538 | /* | |
539 | * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. | |
540 | */ | |
541 | return iscsit_del_np(np); | |
542 | } | |
543 | ||
544 | int iscsit_tpg_del_network_portal( | |
545 | struct iscsi_portal_group *tpg, | |
546 | struct iscsi_tpg_np *tpg_np) | |
547 | { | |
548 | struct iscsi_np *np; | |
549 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; | |
550 | int ret = 0; | |
551 | ||
552 | np = tpg_np->tpg_np; | |
553 | if (!np) { | |
554 | pr_err("Unable to locate struct iscsi_np from" | |
555 | " struct iscsi_tpg_np\n"); | |
556 | return -EINVAL; | |
557 | } | |
558 | ||
559 | if (!tpg_np->tpg_np_parent) { | |
560 | /* | |
561 | * We are the parent tpg network portal. Release all of the | |
562 | * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent | |
563 | * list first. | |
564 | */ | |
565 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, | |
566 | &tpg_np->tpg_np_parent_list, | |
567 | tpg_np_child_list) { | |
568 | ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); | |
569 | if (ret < 0) | |
570 | pr_err("iscsit_tpg_del_network_portal()" | |
571 | " failed: %d\n", ret); | |
572 | } | |
573 | } else { | |
574 | /* | |
575 | * We are not the parent ISCSI_TCP tpg network portal. Release | |
576 | * our own network portals from the child list. | |
577 | */ | |
578 | spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); | |
579 | list_del(&tpg_np->tpg_np_child_list); | |
580 | spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); | |
581 | } | |
582 | ||
583 | spin_lock(&tpg->tpg_np_lock); | |
584 | list_del(&tpg_np->tpg_np_list); | |
585 | tpg->num_tpg_nps--; | |
586 | if (tpg->tpg_tiqn) | |
587 | tpg->tpg_tiqn->tiqn_num_tpg_nps--; | |
588 | spin_unlock(&tpg->tpg_np_lock); | |
589 | ||
590 | return iscsit_tpg_release_np(tpg_np, tpg, np); | |
591 | } | |
592 | ||
593 | int iscsit_tpg_set_initiator_node_queue_depth( | |
594 | struct iscsi_portal_group *tpg, | |
595 | unsigned char *initiatorname, | |
596 | u32 queue_depth, | |
597 | int force) | |
598 | { | |
599 | return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, | |
600 | initiatorname, queue_depth, force); | |
601 | } | |
602 | ||
603 | int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) | |
604 | { | |
605 | unsigned char buf1[256], buf2[256], *none = NULL; | |
606 | int len; | |
607 | struct iscsi_param *param; | |
608 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
609 | ||
610 | if ((authentication != 1) && (authentication != 0)) { | |
611 | pr_err("Illegal value for authentication parameter:" | |
612 | " %u, ignoring request.\n", authentication); | |
617a0c2e | 613 | return -EINVAL; |
e48354ce NB |
614 | } |
615 | ||
616 | memset(buf1, 0, sizeof(buf1)); | |
617 | memset(buf2, 0, sizeof(buf2)); | |
618 | ||
619 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); | |
620 | if (!param) | |
621 | return -EINVAL; | |
622 | ||
623 | if (authentication) { | |
624 | snprintf(buf1, sizeof(buf1), "%s", param->value); | |
625 | none = strstr(buf1, NONE); | |
626 | if (!none) | |
627 | goto out; | |
628 | if (!strncmp(none + 4, ",", 1)) { | |
629 | if (!strcmp(buf1, none)) | |
630 | sprintf(buf2, "%s", none+5); | |
631 | else { | |
632 | none--; | |
633 | *none = '\0'; | |
634 | len = sprintf(buf2, "%s", buf1); | |
635 | none += 5; | |
636 | sprintf(buf2 + len, "%s", none); | |
637 | } | |
638 | } else { | |
639 | none--; | |
640 | *none = '\0'; | |
641 | sprintf(buf2, "%s", buf1); | |
642 | } | |
643 | if (iscsi_update_param_value(param, buf2) < 0) | |
644 | return -EINVAL; | |
645 | } else { | |
646 | snprintf(buf1, sizeof(buf1), "%s", param->value); | |
647 | none = strstr(buf1, NONE); | |
ee1b1b9c | 648 | if (none) |
e48354ce NB |
649 | goto out; |
650 | strncat(buf1, ",", strlen(",")); | |
651 | strncat(buf1, NONE, strlen(NONE)); | |
652 | if (iscsi_update_param_value(param, buf1) < 0) | |
653 | return -EINVAL; | |
654 | } | |
655 | ||
656 | out: | |
657 | a->authentication = authentication; | |
658 | pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", | |
659 | a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); | |
660 | ||
661 | return 0; | |
662 | } | |
663 | ||
664 | int iscsit_ta_login_timeout( | |
665 | struct iscsi_portal_group *tpg, | |
666 | u32 login_timeout) | |
667 | { | |
668 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
669 | ||
670 | if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { | |
671 | pr_err("Requested Login Timeout %u larger than maximum" | |
672 | " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); | |
673 | return -EINVAL; | |
674 | } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { | |
675 | pr_err("Requested Logout Timeout %u smaller than" | |
676 | " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); | |
677 | return -EINVAL; | |
678 | } | |
679 | ||
680 | a->login_timeout = login_timeout; | |
681 | pr_debug("Set Logout Timeout to %u for Target Portal Group" | |
682 | " %hu\n", a->login_timeout, tpg->tpgt); | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | int iscsit_ta_netif_timeout( | |
688 | struct iscsi_portal_group *tpg, | |
689 | u32 netif_timeout) | |
690 | { | |
691 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
692 | ||
693 | if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { | |
694 | pr_err("Requested Network Interface Timeout %u larger" | |
695 | " than maximum %u\n", netif_timeout, | |
696 | TA_NETIF_TIMEOUT_MAX); | |
697 | return -EINVAL; | |
698 | } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { | |
699 | pr_err("Requested Network Interface Timeout %u smaller" | |
700 | " than minimum %u\n", netif_timeout, | |
701 | TA_NETIF_TIMEOUT_MIN); | |
702 | return -EINVAL; | |
703 | } | |
704 | ||
705 | a->netif_timeout = netif_timeout; | |
706 | pr_debug("Set Network Interface Timeout to %u for" | |
707 | " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); | |
708 | ||
709 | return 0; | |
710 | } | |
711 | ||
712 | int iscsit_ta_generate_node_acls( | |
713 | struct iscsi_portal_group *tpg, | |
714 | u32 flag) | |
715 | { | |
716 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
717 | ||
718 | if ((flag != 0) && (flag != 1)) { | |
719 | pr_err("Illegal value %d\n", flag); | |
720 | return -EINVAL; | |
721 | } | |
722 | ||
723 | a->generate_node_acls = flag; | |
724 | pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", | |
725 | tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); | |
726 | ||
38b11bae NB |
727 | if (flag == 1 && a->cache_dynamic_acls == 0) { |
728 | pr_debug("Explicitly setting cache_dynamic_acls=1 when " | |
729 | "generate_node_acls=1\n"); | |
730 | a->cache_dynamic_acls = 1; | |
731 | } | |
732 | ||
e48354ce NB |
733 | return 0; |
734 | } | |
735 | ||
736 | int iscsit_ta_default_cmdsn_depth( | |
737 | struct iscsi_portal_group *tpg, | |
738 | u32 tcq_depth) | |
739 | { | |
740 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
741 | ||
742 | if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { | |
743 | pr_err("Requested Default Queue Depth: %u larger" | |
744 | " than maximum %u\n", tcq_depth, | |
745 | TA_DEFAULT_CMDSN_DEPTH_MAX); | |
746 | return -EINVAL; | |
747 | } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { | |
748 | pr_err("Requested Default Queue Depth: %u smaller" | |
749 | " than minimum %u\n", tcq_depth, | |
750 | TA_DEFAULT_CMDSN_DEPTH_MIN); | |
751 | return -EINVAL; | |
752 | } | |
753 | ||
754 | a->default_cmdsn_depth = tcq_depth; | |
755 | pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", | |
756 | tpg->tpgt, a->default_cmdsn_depth); | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
761 | int iscsit_ta_cache_dynamic_acls( | |
762 | struct iscsi_portal_group *tpg, | |
763 | u32 flag) | |
764 | { | |
765 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
766 | ||
767 | if ((flag != 0) && (flag != 1)) { | |
768 | pr_err("Illegal value %d\n", flag); | |
769 | return -EINVAL; | |
770 | } | |
771 | ||
38b11bae NB |
772 | if (a->generate_node_acls == 1 && flag == 0) { |
773 | pr_debug("Skipping cache_dynamic_acls=0 when" | |
774 | " generate_node_acls=1\n"); | |
775 | return 0; | |
776 | } | |
777 | ||
e48354ce NB |
778 | a->cache_dynamic_acls = flag; |
779 | pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" | |
780 | " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? | |
781 | "Enabled" : "Disabled"); | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | int iscsit_ta_demo_mode_write_protect( | |
787 | struct iscsi_portal_group *tpg, | |
788 | u32 flag) | |
789 | { | |
790 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
791 | ||
792 | if ((flag != 0) && (flag != 1)) { | |
793 | pr_err("Illegal value %d\n", flag); | |
794 | return -EINVAL; | |
795 | } | |
796 | ||
797 | a->demo_mode_write_protect = flag; | |
798 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", | |
799 | tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); | |
800 | ||
801 | return 0; | |
802 | } | |
803 | ||
804 | int iscsit_ta_prod_mode_write_protect( | |
805 | struct iscsi_portal_group *tpg, | |
806 | u32 flag) | |
807 | { | |
808 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
809 | ||
810 | if ((flag != 0) && (flag != 1)) { | |
811 | pr_err("Illegal value %d\n", flag); | |
812 | return -EINVAL; | |
813 | } | |
814 | ||
815 | a->prod_mode_write_protect = flag; | |
816 | pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" | |
817 | " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? | |
818 | "ON" : "OFF"); | |
819 | ||
820 | return 0; | |
821 | } | |
4c54b6cf TG |
822 | |
823 | int iscsit_ta_demo_mode_discovery( | |
824 | struct iscsi_portal_group *tpg, | |
825 | u32 flag) | |
826 | { | |
827 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
828 | ||
829 | if ((flag != 0) && (flag != 1)) { | |
830 | pr_err("Illegal value %d\n", flag); | |
831 | return -EINVAL; | |
832 | } | |
833 | ||
834 | a->demo_mode_discovery = flag; | |
835 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" | |
836 | " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? | |
837 | "ON" : "OFF"); | |
838 | ||
839 | return 0; | |
840 | } | |
d1fa7a1d NB |
841 | |
842 | int iscsit_ta_default_erl( | |
843 | struct iscsi_portal_group *tpg, | |
844 | u32 default_erl) | |
845 | { | |
846 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
847 | ||
848 | if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { | |
849 | pr_err("Illegal value for default_erl: %u\n", default_erl); | |
850 | return -EINVAL; | |
851 | } | |
852 | ||
853 | a->default_erl = default_erl; | |
854 | pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); | |
855 | ||
856 | return 0; | |
857 | } | |
8085176f SG |
858 | |
859 | int iscsit_ta_t10_pi( | |
860 | struct iscsi_portal_group *tpg, | |
861 | u32 flag) | |
862 | { | |
863 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
864 | ||
865 | if ((flag != 0) && (flag != 1)) { | |
866 | pr_err("Illegal value %d\n", flag); | |
867 | return -EINVAL; | |
868 | } | |
869 | ||
870 | a->t10_pi = flag; | |
871 | pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" | |
872 | " %s\n", tpg->tpgt, (a->t10_pi) ? | |
873 | "ON" : "OFF"); | |
874 | ||
875 | return 0; | |
876 | } | |
901c04a3 NB |
877 | |
878 | int iscsit_ta_fabric_prot_type( | |
879 | struct iscsi_portal_group *tpg, | |
880 | u32 prot_type) | |
881 | { | |
882 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; | |
883 | ||
884 | if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { | |
885 | pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); | |
886 | return -EINVAL; | |
887 | } | |
888 | ||
889 | a->fabric_prot_type = prot_type; | |
890 | pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", | |
891 | tpg->tpgt, prot_type); | |
892 | ||
893 | return 0; | |
894 | } |