1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /******************************************************************************* |
3 | * This file contains iSCSI Target Portal Group related functions. |
4 | * |
5 | * (c) Copyright 2007-2013 Datera, Inc. |
6 | * |
7 | * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> |
8 | * |
9 | ******************************************************************************/ |
10 | |
11 | #include <linux/slab.h> |
12 | #include <target/target_core_base.h> |
13 | #include <target/target_core_fabric.h> |
14 | #include <target/iscsi/iscsi_target_core.h> |
15 | #include "iscsi_target_erl0.h" |
16 | #include "iscsi_target_login.h" |
17 | #include "iscsi_target_nodeattrib.h" |
18 | #include "iscsi_target_tpg.h" |
19 | #include "iscsi_target_util.h" |
20 | #include "iscsi_target.h" |
21 | #include "iscsi_target_parameters.h" |
22 | |
23 | #include <target/iscsi/iscsi_transport.h> |
24 | |
25 | struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt) |
26 | { |
27 | struct iscsi_portal_group *tpg; |
28 | |
29 | tpg = kzalloc(size: sizeof(struct iscsi_portal_group), GFP_KERNEL); |
30 | if (!tpg) { |
31 | pr_err("Unable to allocate struct iscsi_portal_group\n" ); |
32 | return NULL; |
33 | } |
34 | |
35 | tpg->tpgt = tpgt; |
36 | tpg->tpg_state = TPG_STATE_FREE; |
37 | tpg->tpg_tiqn = tiqn; |
38 | INIT_LIST_HEAD(list: &tpg->tpg_gnp_list); |
39 | INIT_LIST_HEAD(list: &tpg->tpg_list); |
40 | mutex_init(&tpg->tpg_access_lock); |
41 | sema_init(sem: &tpg->np_login_sem, val: 1); |
42 | spin_lock_init(&tpg->tpg_state_lock); |
43 | spin_lock_init(&tpg->tpg_np_lock); |
44 | |
45 | return tpg; |
46 | } |
47 | |
48 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); |
49 | |
50 | int iscsit_load_discovery_tpg(void) |
51 | { |
52 | struct iscsi_param *param; |
53 | struct iscsi_portal_group *tpg; |
54 | int ret; |
55 | |
56 | tpg = iscsit_alloc_portal_group(NULL, tpgt: 1); |
57 | if (!tpg) { |
58 | pr_err("Unable to allocate struct iscsi_portal_group\n" ); |
59 | return -1; |
60 | } |
61 | /* |
62 | * Save iscsi_ops pointer for special case discovery TPG that |
63 | * doesn't exist as se_wwn->wwn_group within configfs. |
64 | */ |
65 | tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops; |
66 | ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1); |
67 | if (ret < 0) { |
68 | kfree(objp: tpg); |
69 | return -1; |
70 | } |
71 | |
72 | tpg->sid = 1; /* First Assigned LIO Session ID */ |
73 | iscsit_set_default_tpg_attribs(tpg); |
74 | |
75 | if (iscsi_create_default_params(&tpg->param_list) < 0) |
76 | goto out; |
77 | /* |
78 | * By default we disable authentication for discovery sessions, |
79 | * this can be changed with: |
80 | * |
81 | * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth |
82 | */ |
83 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); |
84 | if (!param) |
85 | goto free_pl_out; |
86 | |
87 | if (iscsi_update_param_value(param, "CHAP,None" ) < 0) |
88 | goto free_pl_out; |
89 | |
90 | tpg->tpg_attrib.authentication = 0; |
91 | |
92 | spin_lock(lock: &tpg->tpg_state_lock); |
93 | tpg->tpg_state = TPG_STATE_ACTIVE; |
94 | spin_unlock(lock: &tpg->tpg_state_lock); |
95 | |
96 | iscsit_global->discovery_tpg = tpg; |
97 | pr_debug("CORE[0] - Allocated Discovery TPG\n" ); |
98 | |
99 | return 0; |
100 | free_pl_out: |
101 | iscsi_release_param_list(tpg->param_list); |
102 | out: |
103 | if (tpg->sid == 1) |
104 | core_tpg_deregister(&tpg->tpg_se_tpg); |
105 | kfree(objp: tpg); |
106 | return -1; |
107 | } |
108 | |
109 | void iscsit_release_discovery_tpg(void) |
110 | { |
111 | struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; |
112 | |
113 | if (!tpg) |
114 | return; |
115 | |
116 | iscsi_release_param_list(tpg->param_list); |
117 | core_tpg_deregister(&tpg->tpg_se_tpg); |
118 | |
119 | kfree(objp: tpg); |
120 | iscsit_global->discovery_tpg = NULL; |
121 | } |
122 | |
123 | struct iscsi_portal_group *iscsit_get_tpg_from_np( |
124 | struct iscsi_tiqn *tiqn, |
125 | struct iscsi_np *np, |
126 | struct iscsi_tpg_np **tpg_np_out) |
127 | { |
128 | struct iscsi_portal_group *tpg = NULL; |
129 | struct iscsi_tpg_np *tpg_np; |
130 | |
131 | spin_lock(lock: &tiqn->tiqn_tpg_lock); |
132 | list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { |
133 | |
134 | spin_lock(lock: &tpg->tpg_state_lock); |
135 | if (tpg->tpg_state != TPG_STATE_ACTIVE) { |
136 | spin_unlock(lock: &tpg->tpg_state_lock); |
137 | continue; |
138 | } |
139 | spin_unlock(lock: &tpg->tpg_state_lock); |
140 | |
141 | spin_lock(lock: &tpg->tpg_np_lock); |
142 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { |
143 | if (tpg_np->tpg_np == np) { |
144 | *tpg_np_out = tpg_np; |
145 | kref_get(kref: &tpg_np->tpg_np_kref); |
146 | spin_unlock(lock: &tpg->tpg_np_lock); |
147 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
148 | return tpg; |
149 | } |
150 | } |
151 | spin_unlock(lock: &tpg->tpg_np_lock); |
152 | } |
153 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
154 | |
155 | return NULL; |
156 | } |
157 | |
158 | int iscsit_get_tpg( |
159 | struct iscsi_portal_group *tpg) |
160 | { |
161 | return mutex_lock_interruptible(&tpg->tpg_access_lock); |
162 | } |
163 | |
164 | void iscsit_put_tpg(struct iscsi_portal_group *tpg) |
165 | { |
166 | mutex_unlock(lock: &tpg->tpg_access_lock); |
167 | } |
168 | |
169 | static void iscsit_clear_tpg_np_login_thread( |
170 | struct iscsi_tpg_np *tpg_np, |
171 | struct iscsi_portal_group *tpg, |
172 | bool shutdown) |
173 | { |
174 | if (!tpg_np->tpg_np) { |
175 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n" ); |
176 | return; |
177 | } |
178 | |
179 | if (shutdown) |
180 | tpg_np->tpg_np->enabled = false; |
181 | iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); |
182 | } |
183 | |
184 | static void iscsit_clear_tpg_np_login_threads( |
185 | struct iscsi_portal_group *tpg, |
186 | bool shutdown) |
187 | { |
188 | struct iscsi_tpg_np *tpg_np; |
189 | |
190 | spin_lock(lock: &tpg->tpg_np_lock); |
191 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { |
192 | if (!tpg_np->tpg_np) { |
193 | pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n" ); |
194 | continue; |
195 | } |
196 | spin_unlock(lock: &tpg->tpg_np_lock); |
197 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); |
198 | spin_lock(lock: &tpg->tpg_np_lock); |
199 | } |
200 | spin_unlock(lock: &tpg->tpg_np_lock); |
201 | } |
202 | |
203 | void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) |
204 | { |
205 | iscsi_print_params(tpg->param_list); |
206 | } |
207 | |
208 | static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) |
209 | { |
210 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
211 | |
212 | a->authentication = TA_AUTHENTICATION; |
213 | a->login_timeout = TA_LOGIN_TIMEOUT; |
214 | a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; |
215 | a->generate_node_acls = TA_GENERATE_NODE_ACLS; |
216 | a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; |
217 | a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; |
218 | a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; |
219 | a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; |
220 | a->default_erl = TA_DEFAULT_ERL; |
221 | a->t10_pi = TA_DEFAULT_T10_PI; |
222 | a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; |
223 | a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS; |
224 | a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND; |
225 | } |
226 | |
227 | int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) |
228 | { |
229 | if (tpg->tpg_state != TPG_STATE_FREE) { |
230 | pr_err("Unable to add iSCSI Target Portal Group: %d" |
231 | " while not in TPG_STATE_FREE state.\n" , tpg->tpgt); |
232 | return -EEXIST; |
233 | } |
234 | iscsit_set_default_tpg_attribs(tpg); |
235 | |
236 | if (iscsi_create_default_params(&tpg->param_list) < 0) |
237 | goto err_out; |
238 | |
239 | tpg->tpg_attrib.tpg = tpg; |
240 | |
241 | spin_lock(lock: &tpg->tpg_state_lock); |
242 | tpg->tpg_state = TPG_STATE_INACTIVE; |
243 | spin_unlock(lock: &tpg->tpg_state_lock); |
244 | |
245 | spin_lock(lock: &tiqn->tiqn_tpg_lock); |
246 | list_add_tail(new: &tpg->tpg_list, head: &tiqn->tiqn_tpg_list); |
247 | tiqn->tiqn_ntpgs++; |
248 | pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n" , |
249 | tiqn->tiqn, tpg->tpgt); |
250 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
251 | |
252 | return 0; |
253 | err_out: |
254 | if (tpg->param_list) { |
255 | iscsi_release_param_list(tpg->param_list); |
256 | tpg->param_list = NULL; |
257 | } |
258 | return -ENOMEM; |
259 | } |
260 | |
261 | int iscsit_tpg_del_portal_group( |
262 | struct iscsi_tiqn *tiqn, |
263 | struct iscsi_portal_group *tpg, |
264 | int force) |
265 | { |
266 | u8 old_state = tpg->tpg_state; |
267 | |
268 | spin_lock(lock: &tpg->tpg_state_lock); |
269 | tpg->tpg_state = TPG_STATE_INACTIVE; |
270 | spin_unlock(lock: &tpg->tpg_state_lock); |
271 | |
272 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { |
273 | pr_err("Unable to delete iSCSI Target Portal Group:" |
274 | " %hu while active sessions exist, and force=0\n" , |
275 | tpg->tpgt); |
276 | tpg->tpg_state = old_state; |
277 | return -EPERM; |
278 | } |
279 | |
280 | if (tpg->param_list) { |
281 | iscsi_release_param_list(tpg->param_list); |
282 | tpg->param_list = NULL; |
283 | } |
284 | |
285 | core_tpg_deregister(&tpg->tpg_se_tpg); |
286 | |
287 | spin_lock(lock: &tpg->tpg_state_lock); |
288 | tpg->tpg_state = TPG_STATE_FREE; |
289 | spin_unlock(lock: &tpg->tpg_state_lock); |
290 | |
291 | spin_lock(lock: &tiqn->tiqn_tpg_lock); |
292 | tiqn->tiqn_ntpgs--; |
293 | list_del(entry: &tpg->tpg_list); |
294 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
295 | |
296 | pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n" , |
297 | tiqn->tiqn, tpg->tpgt); |
298 | |
299 | kfree(objp: tpg); |
300 | return 0; |
301 | } |
302 | |
303 | int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) |
304 | { |
305 | struct iscsi_param *param; |
306 | struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; |
307 | int ret; |
308 | |
309 | if (tpg->tpg_state == TPG_STATE_ACTIVE) { |
310 | pr_err("iSCSI target portal group: %hu is already" |
311 | " active, ignoring request.\n" , tpg->tpgt); |
312 | return -EINVAL; |
313 | } |
314 | /* |
315 | * Make sure that AuthMethod does not contain None as an option |
316 | * unless explictly disabled. Set the default to CHAP if authentication |
317 | * is enforced (as per default), and remove the NONE option. |
318 | */ |
319 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); |
320 | if (!param) |
321 | return -EINVAL; |
322 | |
323 | if (tpg->tpg_attrib.authentication) { |
324 | if (!strcmp(param->value, NONE)) { |
325 | ret = iscsi_update_param_value(param, CHAP); |
326 | if (ret) |
327 | goto err; |
328 | } |
329 | |
330 | ret = iscsit_ta_authentication(tpg, 1); |
331 | if (ret < 0) |
332 | goto err; |
333 | } |
334 | |
335 | spin_lock(lock: &tpg->tpg_state_lock); |
336 | tpg->tpg_state = TPG_STATE_ACTIVE; |
337 | spin_unlock(lock: &tpg->tpg_state_lock); |
338 | |
339 | spin_lock(lock: &tiqn->tiqn_tpg_lock); |
340 | tiqn->tiqn_active_tpgs++; |
341 | pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n" , |
342 | tpg->tpgt); |
343 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
344 | |
345 | return 0; |
346 | |
347 | err: |
348 | return ret; |
349 | } |
350 | |
351 | int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) |
352 | { |
353 | struct iscsi_tiqn *tiqn; |
354 | u8 old_state = tpg->tpg_state; |
355 | |
356 | spin_lock(lock: &tpg->tpg_state_lock); |
357 | if (tpg->tpg_state == TPG_STATE_INACTIVE) { |
358 | pr_err("iSCSI Target Portal Group: %hu is already" |
359 | " inactive, ignoring request.\n" , tpg->tpgt); |
360 | spin_unlock(lock: &tpg->tpg_state_lock); |
361 | return -EINVAL; |
362 | } |
363 | tpg->tpg_state = TPG_STATE_INACTIVE; |
364 | spin_unlock(lock: &tpg->tpg_state_lock); |
365 | |
366 | iscsit_clear_tpg_np_login_threads(tpg, shutdown: false); |
367 | |
368 | if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { |
369 | spin_lock(lock: &tpg->tpg_state_lock); |
370 | tpg->tpg_state = old_state; |
371 | spin_unlock(lock: &tpg->tpg_state_lock); |
372 | pr_err("Unable to disable iSCSI Target Portal Group:" |
373 | " %hu while active sessions exist, and force=0\n" , |
374 | tpg->tpgt); |
375 | return -EPERM; |
376 | } |
377 | |
378 | tiqn = tpg->tpg_tiqn; |
379 | if (!tiqn || (tpg == iscsit_global->discovery_tpg)) |
380 | return 0; |
381 | |
382 | spin_lock(lock: &tiqn->tiqn_tpg_lock); |
383 | tiqn->tiqn_active_tpgs--; |
384 | pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n" , |
385 | tpg->tpgt); |
386 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
387 | |
388 | return 0; |
389 | } |
390 | |
391 | struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( |
392 | struct iscsit_session *sess) |
393 | { |
394 | struct se_session *se_sess = sess->se_sess; |
395 | struct se_node_acl *se_nacl = se_sess->se_node_acl; |
396 | struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl); |
397 | |
398 | return &acl->node_attrib; |
399 | } |
400 | |
401 | struct iscsi_tpg_np *iscsit_tpg_locate_child_np( |
402 | struct iscsi_tpg_np *tpg_np, |
403 | int network_transport) |
404 | { |
405 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; |
406 | |
407 | spin_lock(lock: &tpg_np->tpg_np_parent_lock); |
408 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, |
409 | &tpg_np->tpg_np_parent_list, tpg_np_child_list) { |
410 | if (tpg_np_child->tpg_np->np_network_transport == |
411 | network_transport) { |
412 | spin_unlock(lock: &tpg_np->tpg_np_parent_lock); |
413 | return tpg_np_child; |
414 | } |
415 | } |
416 | spin_unlock(lock: &tpg_np->tpg_np_parent_lock); |
417 | |
418 | return NULL; |
419 | } |
420 | |
421 | static bool iscsit_tpg_check_network_portal( |
422 | struct iscsi_tiqn *tiqn, |
423 | struct sockaddr_storage *sockaddr, |
424 | int network_transport) |
425 | { |
426 | struct iscsi_portal_group *tpg; |
427 | struct iscsi_tpg_np *tpg_np; |
428 | struct iscsi_np *np; |
429 | bool match = false; |
430 | |
431 | spin_lock(lock: &tiqn->tiqn_tpg_lock); |
432 | list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { |
433 | |
434 | spin_lock(lock: &tpg->tpg_np_lock); |
435 | list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { |
436 | np = tpg_np->tpg_np; |
437 | |
438 | match = iscsit_check_np_match(sockaddr, np, |
439 | network_transport); |
440 | if (match) |
441 | break; |
442 | } |
443 | spin_unlock(lock: &tpg->tpg_np_lock); |
444 | |
445 | if (match) |
446 | break; |
447 | } |
448 | spin_unlock(lock: &tiqn->tiqn_tpg_lock); |
449 | |
450 | return match; |
451 | } |
452 | |
453 | struct iscsi_tpg_np *iscsit_tpg_add_network_portal( |
454 | struct iscsi_portal_group *tpg, |
455 | struct sockaddr_storage *sockaddr, |
456 | struct iscsi_tpg_np *tpg_np_parent, |
457 | int network_transport) |
458 | { |
459 | struct iscsi_np *np; |
460 | struct iscsi_tpg_np *tpg_np; |
461 | |
462 | if (!tpg_np_parent) { |
463 | if (iscsit_tpg_check_network_portal(tiqn: tpg->tpg_tiqn, sockaddr, |
464 | network_transport)) { |
465 | pr_err("Network Portal: %pISc already exists on a" |
466 | " different TPG on %s\n" , sockaddr, |
467 | tpg->tpg_tiqn->tiqn); |
468 | return ERR_PTR(error: -EEXIST); |
469 | } |
470 | } |
471 | |
472 | tpg_np = kzalloc(size: sizeof(struct iscsi_tpg_np), GFP_KERNEL); |
473 | if (!tpg_np) { |
474 | pr_err("Unable to allocate memory for" |
475 | " struct iscsi_tpg_np.\n" ); |
476 | return ERR_PTR(error: -ENOMEM); |
477 | } |
478 | |
479 | np = iscsit_add_np(sockaddr, network_transport); |
480 | if (IS_ERR(ptr: np)) { |
481 | kfree(objp: tpg_np); |
482 | return ERR_CAST(ptr: np); |
483 | } |
484 | |
485 | INIT_LIST_HEAD(list: &tpg_np->tpg_np_list); |
486 | INIT_LIST_HEAD(list: &tpg_np->tpg_np_child_list); |
487 | INIT_LIST_HEAD(list: &tpg_np->tpg_np_parent_list); |
488 | spin_lock_init(&tpg_np->tpg_np_parent_lock); |
489 | init_completion(x: &tpg_np->tpg_np_comp); |
490 | kref_init(kref: &tpg_np->tpg_np_kref); |
491 | tpg_np->tpg_np = np; |
492 | tpg_np->tpg = tpg; |
493 | |
494 | spin_lock(lock: &tpg->tpg_np_lock); |
495 | list_add_tail(new: &tpg_np->tpg_np_list, head: &tpg->tpg_gnp_list); |
496 | tpg->num_tpg_nps++; |
497 | if (tpg->tpg_tiqn) |
498 | tpg->tpg_tiqn->tiqn_num_tpg_nps++; |
499 | spin_unlock(lock: &tpg->tpg_np_lock); |
500 | |
501 | if (tpg_np_parent) { |
502 | tpg_np->tpg_np_parent = tpg_np_parent; |
503 | spin_lock(lock: &tpg_np_parent->tpg_np_parent_lock); |
504 | list_add_tail(new: &tpg_np->tpg_np_child_list, |
505 | head: &tpg_np_parent->tpg_np_parent_list); |
506 | spin_unlock(lock: &tpg_np_parent->tpg_np_parent_lock); |
507 | } |
508 | |
509 | pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n" , |
510 | tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, |
511 | np->np_transport->name); |
512 | |
513 | return tpg_np; |
514 | } |
515 | |
516 | static int iscsit_tpg_release_np( |
517 | struct iscsi_tpg_np *tpg_np, |
518 | struct iscsi_portal_group *tpg, |
519 | struct iscsi_np *np) |
520 | { |
521 | iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown: true); |
522 | |
523 | pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n" , |
524 | tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, |
525 | np->np_transport->name); |
526 | |
527 | tpg_np->tpg_np = NULL; |
528 | tpg_np->tpg = NULL; |
529 | kfree(objp: tpg_np); |
530 | /* |
531 | * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. |
532 | */ |
533 | return iscsit_del_np(np); |
534 | } |
535 | |
536 | int iscsit_tpg_del_network_portal( |
537 | struct iscsi_portal_group *tpg, |
538 | struct iscsi_tpg_np *tpg_np) |
539 | { |
540 | struct iscsi_np *np; |
541 | struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; |
542 | int ret = 0; |
543 | |
544 | np = tpg_np->tpg_np; |
545 | if (!np) { |
546 | pr_err("Unable to locate struct iscsi_np from" |
547 | " struct iscsi_tpg_np\n" ); |
548 | return -EINVAL; |
549 | } |
550 | |
551 | if (!tpg_np->tpg_np_parent) { |
552 | /* |
553 | * We are the parent tpg network portal. Release all of the |
554 | * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent |
555 | * list first. |
556 | */ |
557 | list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, |
558 | &tpg_np->tpg_np_parent_list, |
559 | tpg_np_child_list) { |
560 | ret = iscsit_tpg_del_network_portal(tpg, tpg_np: tpg_np_child); |
561 | if (ret < 0) |
562 | pr_err("iscsit_tpg_del_network_portal()" |
563 | " failed: %d\n" , ret); |
564 | } |
565 | } else { |
566 | /* |
567 | * We are not the parent ISCSI_TCP tpg network portal. Release |
568 | * our own network portals from the child list. |
569 | */ |
570 | spin_lock(lock: &tpg_np->tpg_np_parent->tpg_np_parent_lock); |
571 | list_del(entry: &tpg_np->tpg_np_child_list); |
572 | spin_unlock(lock: &tpg_np->tpg_np_parent->tpg_np_parent_lock); |
573 | } |
574 | |
575 | spin_lock(lock: &tpg->tpg_np_lock); |
576 | list_del(entry: &tpg_np->tpg_np_list); |
577 | tpg->num_tpg_nps--; |
578 | if (tpg->tpg_tiqn) |
579 | tpg->tpg_tiqn->tiqn_num_tpg_nps--; |
580 | spin_unlock(lock: &tpg->tpg_np_lock); |
581 | |
582 | return iscsit_tpg_release_np(tpg_np, tpg, np); |
583 | } |
584 | |
585 | int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) |
586 | { |
587 | unsigned char buf1[256], buf2[256], *none = NULL; |
588 | int len; |
589 | struct iscsi_param *param; |
590 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
591 | |
592 | if ((authentication != 1) && (authentication != 0)) { |
593 | pr_err("Illegal value for authentication parameter:" |
594 | " %u, ignoring request.\n" , authentication); |
595 | return -EINVAL; |
596 | } |
597 | |
598 | memset(buf1, 0, sizeof(buf1)); |
599 | memset(buf2, 0, sizeof(buf2)); |
600 | |
601 | param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); |
602 | if (!param) |
603 | return -EINVAL; |
604 | |
605 | if (authentication) { |
606 | snprintf(buf: buf1, size: sizeof(buf1), fmt: "%s" , param->value); |
607 | none = strstr(buf1, NONE); |
608 | if (!none) |
609 | goto out; |
610 | if (!strncmp(none + 4, "," , 1)) { |
611 | if (!strcmp(buf1, none)) |
612 | sprintf(buf: buf2, fmt: "%s" , none+5); |
613 | else { |
614 | none--; |
615 | *none = '\0'; |
616 | len = sprintf(buf: buf2, fmt: "%s" , buf1); |
617 | none += 5; |
618 | sprintf(buf: buf2 + len, fmt: "%s" , none); |
619 | } |
620 | } else { |
621 | none--; |
622 | *none = '\0'; |
623 | sprintf(buf: buf2, fmt: "%s" , buf1); |
624 | } |
625 | if (iscsi_update_param_value(param, buf2) < 0) |
626 | return -EINVAL; |
627 | } else { |
628 | snprintf(buf: buf1, size: sizeof(buf1), fmt: "%s" , param->value); |
629 | none = strstr(buf1, NONE); |
630 | if (none) |
631 | goto out; |
632 | strlcat(p: buf1, q: "," NONE, avail: sizeof(buf1)); |
633 | if (iscsi_update_param_value(param, buf1) < 0) |
634 | return -EINVAL; |
635 | } |
636 | |
637 | out: |
638 | a->authentication = authentication; |
639 | pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n" , |
640 | a->authentication ? "Enforcing" : "Disabling" , tpg->tpgt); |
641 | |
642 | return 0; |
643 | } |
644 | |
645 | int iscsit_ta_login_timeout( |
646 | struct iscsi_portal_group *tpg, |
647 | u32 login_timeout) |
648 | { |
649 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
650 | |
651 | if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { |
652 | pr_err("Requested Login Timeout %u larger than maximum" |
653 | " %u\n" , login_timeout, TA_LOGIN_TIMEOUT_MAX); |
654 | return -EINVAL; |
655 | } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { |
656 | pr_err("Requested Logout Timeout %u smaller than" |
657 | " minimum %u\n" , login_timeout, TA_LOGIN_TIMEOUT_MIN); |
658 | return -EINVAL; |
659 | } |
660 | |
661 | a->login_timeout = login_timeout; |
662 | pr_debug("Set Logout Timeout to %u for Target Portal Group" |
663 | " %hu\n" , a->login_timeout, tpg->tpgt); |
664 | |
665 | return 0; |
666 | } |
667 | |
668 | int iscsit_ta_generate_node_acls( |
669 | struct iscsi_portal_group *tpg, |
670 | u32 flag) |
671 | { |
672 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
673 | |
674 | if ((flag != 0) && (flag != 1)) { |
675 | pr_err("Illegal value %d\n" , flag); |
676 | return -EINVAL; |
677 | } |
678 | |
679 | a->generate_node_acls = flag; |
680 | pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n" , |
681 | tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled" ); |
682 | |
683 | if (flag == 1 && a->cache_dynamic_acls == 0) { |
684 | pr_debug("Explicitly setting cache_dynamic_acls=1 when " |
685 | "generate_node_acls=1\n" ); |
686 | a->cache_dynamic_acls = 1; |
687 | } |
688 | |
689 | return 0; |
690 | } |
691 | |
692 | int iscsit_ta_default_cmdsn_depth( |
693 | struct iscsi_portal_group *tpg, |
694 | u32 tcq_depth) |
695 | { |
696 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
697 | |
698 | if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { |
699 | pr_err("Requested Default Queue Depth: %u larger" |
700 | " than maximum %u\n" , tcq_depth, |
701 | TA_DEFAULT_CMDSN_DEPTH_MAX); |
702 | return -EINVAL; |
703 | } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { |
704 | pr_err("Requested Default Queue Depth: %u smaller" |
705 | " than minimum %u\n" , tcq_depth, |
706 | TA_DEFAULT_CMDSN_DEPTH_MIN); |
707 | return -EINVAL; |
708 | } |
709 | |
710 | a->default_cmdsn_depth = tcq_depth; |
711 | pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n" , |
712 | tpg->tpgt, a->default_cmdsn_depth); |
713 | |
714 | return 0; |
715 | } |
716 | |
717 | int iscsit_ta_cache_dynamic_acls( |
718 | struct iscsi_portal_group *tpg, |
719 | u32 flag) |
720 | { |
721 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
722 | |
723 | if ((flag != 0) && (flag != 1)) { |
724 | pr_err("Illegal value %d\n" , flag); |
725 | return -EINVAL; |
726 | } |
727 | |
728 | if (a->generate_node_acls == 1 && flag == 0) { |
729 | pr_debug("Skipping cache_dynamic_acls=0 when" |
730 | " generate_node_acls=1\n" ); |
731 | return 0; |
732 | } |
733 | |
734 | a->cache_dynamic_acls = flag; |
735 | pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" |
736 | " ACLs %s\n" , tpg->tpgt, (a->cache_dynamic_acls) ? |
737 | "Enabled" : "Disabled" ); |
738 | |
739 | return 0; |
740 | } |
741 | |
742 | int iscsit_ta_demo_mode_write_protect( |
743 | struct iscsi_portal_group *tpg, |
744 | u32 flag) |
745 | { |
746 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
747 | |
748 | if ((flag != 0) && (flag != 1)) { |
749 | pr_err("Illegal value %d\n" , flag); |
750 | return -EINVAL; |
751 | } |
752 | |
753 | a->demo_mode_write_protect = flag; |
754 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n" , |
755 | tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF" ); |
756 | |
757 | return 0; |
758 | } |
759 | |
760 | int iscsit_ta_prod_mode_write_protect( |
761 | struct iscsi_portal_group *tpg, |
762 | u32 flag) |
763 | { |
764 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
765 | |
766 | if ((flag != 0) && (flag != 1)) { |
767 | pr_err("Illegal value %d\n" , flag); |
768 | return -EINVAL; |
769 | } |
770 | |
771 | a->prod_mode_write_protect = flag; |
772 | pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" |
773 | " %s\n" , tpg->tpgt, (a->prod_mode_write_protect) ? |
774 | "ON" : "OFF" ); |
775 | |
776 | return 0; |
777 | } |
778 | |
779 | int iscsit_ta_demo_mode_discovery( |
780 | struct iscsi_portal_group *tpg, |
781 | u32 flag) |
782 | { |
783 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
784 | |
785 | if ((flag != 0) && (flag != 1)) { |
786 | pr_err("Illegal value %d\n" , flag); |
787 | return -EINVAL; |
788 | } |
789 | |
790 | a->demo_mode_discovery = flag; |
791 | pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" |
792 | " %s\n" , tpg->tpgt, (a->demo_mode_discovery) ? |
793 | "ON" : "OFF" ); |
794 | |
795 | return 0; |
796 | } |
797 | |
798 | int iscsit_ta_default_erl( |
799 | struct iscsi_portal_group *tpg, |
800 | u32 default_erl) |
801 | { |
802 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
803 | |
804 | if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { |
805 | pr_err("Illegal value for default_erl: %u\n" , default_erl); |
806 | return -EINVAL; |
807 | } |
808 | |
809 | a->default_erl = default_erl; |
810 | pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n" , tpg->tpgt, a->default_erl); |
811 | |
812 | return 0; |
813 | } |
814 | |
815 | int iscsit_ta_t10_pi( |
816 | struct iscsi_portal_group *tpg, |
817 | u32 flag) |
818 | { |
819 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
820 | |
821 | if ((flag != 0) && (flag != 1)) { |
822 | pr_err("Illegal value %d\n" , flag); |
823 | return -EINVAL; |
824 | } |
825 | |
826 | a->t10_pi = flag; |
827 | pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" |
828 | " %s\n" , tpg->tpgt, (a->t10_pi) ? |
829 | "ON" : "OFF" ); |
830 | |
831 | return 0; |
832 | } |
833 | |
834 | int iscsit_ta_fabric_prot_type( |
835 | struct iscsi_portal_group *tpg, |
836 | u32 prot_type) |
837 | { |
838 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
839 | |
840 | if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { |
841 | pr_err("Illegal value for fabric_prot_type: %u\n" , prot_type); |
842 | return -EINVAL; |
843 | } |
844 | |
845 | a->fabric_prot_type = prot_type; |
846 | pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n" , |
847 | tpg->tpgt, prot_type); |
848 | |
849 | return 0; |
850 | } |
851 | |
852 | int iscsit_ta_tpg_enabled_sendtargets( |
853 | struct iscsi_portal_group *tpg, |
854 | u32 flag) |
855 | { |
856 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
857 | |
858 | if ((flag != 0) && (flag != 1)) { |
859 | pr_err("Illegal value %d\n" , flag); |
860 | return -EINVAL; |
861 | } |
862 | |
863 | a->tpg_enabled_sendtargets = flag; |
864 | pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:" |
865 | " %s\n" , tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF" ); |
866 | |
867 | return 0; |
868 | } |
869 | |
870 | int iscsit_ta_login_keys_workaround( |
871 | struct iscsi_portal_group *tpg, |
872 | u32 flag) |
873 | { |
874 | struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; |
875 | |
876 | if ((flag != 0) && (flag != 1)) { |
877 | pr_err("Illegal value %d\n" , flag); |
878 | return -EINVAL; |
879 | } |
880 | |
881 | a->login_keys_workaround = flag; |
882 | pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s " , |
883 | tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF" ); |
884 | |
885 | return 0; |
886 | } |
887 | |