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[deliverable/linux.git] / drivers / target / iscsi / iscsi_target_configfs.c
1 /*******************************************************************************
2 * This file contains the configfs implementation for iSCSI Target mode
3 * from the LIO-Target Project.
4 *
5 * (c) Copyright 2007-2013 Datera, Inc.
6 *
7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 ****************************************************************************/
19
20 #include <linux/configfs.h>
21 #include <linux/ctype.h>
22 #include <linux/export.h>
23 #include <linux/inet.h>
24 #include <target/target_core_base.h>
25 #include <target/target_core_fabric.h>
26 #include <target/iscsi/iscsi_transport.h>
27
28 #include <target/iscsi/iscsi_target_core.h>
29 #include "iscsi_target_parameters.h"
30 #include "iscsi_target_device.h"
31 #include "iscsi_target_erl0.h"
32 #include "iscsi_target_nodeattrib.h"
33 #include "iscsi_target_tpg.h"
34 #include "iscsi_target_util.h"
35 #include "iscsi_target.h"
36 #include <target/iscsi/iscsi_target_stat.h>
37
38
39 /* Start items for lio_target_portal_cit */
40
41 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item)
42 {
43 return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np);
44 }
45
46 static ssize_t lio_target_np_sctp_show(struct config_item *item, char *page)
47 {
48 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
49 struct iscsi_tpg_np *tpg_np_sctp;
50 ssize_t rb;
51
52 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
53 if (tpg_np_sctp)
54 rb = sprintf(page, "1\n");
55 else
56 rb = sprintf(page, "0\n");
57
58 return rb;
59 }
60
61 static ssize_t lio_target_np_sctp_store(struct config_item *item,
62 const char *page, size_t count)
63 {
64 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
65 struct iscsi_np *np;
66 struct iscsi_portal_group *tpg;
67 struct iscsi_tpg_np *tpg_np_sctp = NULL;
68 u32 op;
69 int ret;
70
71 ret = kstrtou32(page, 0, &op);
72 if (ret)
73 return ret;
74 if ((op != 1) && (op != 0)) {
75 pr_err("Illegal value for tpg_enable: %u\n", op);
76 return -EINVAL;
77 }
78 np = tpg_np->tpg_np;
79 if (!np) {
80 pr_err("Unable to locate struct iscsi_np from"
81 " struct iscsi_tpg_np\n");
82 return -EINVAL;
83 }
84
85 tpg = tpg_np->tpg;
86 if (iscsit_get_tpg(tpg) < 0)
87 return -EINVAL;
88
89 if (op) {
90 /*
91 * Use existing np->np_sockaddr for SCTP network portal reference
92 */
93 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
94 tpg_np, ISCSI_SCTP_TCP);
95 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
96 goto out;
97 } else {
98 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
99 if (!tpg_np_sctp)
100 goto out;
101
102 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
103 if (ret < 0)
104 goto out;
105 }
106
107 iscsit_put_tpg(tpg);
108 return count;
109 out:
110 iscsit_put_tpg(tpg);
111 return -EINVAL;
112 }
113
114 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page)
115 {
116 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
117 struct iscsi_tpg_np *tpg_np_iser;
118 ssize_t rb;
119
120 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
121 if (tpg_np_iser)
122 rb = sprintf(page, "1\n");
123 else
124 rb = sprintf(page, "0\n");
125
126 return rb;
127 }
128
129 static ssize_t lio_target_np_iser_store(struct config_item *item,
130 const char *page, size_t count)
131 {
132 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
133 struct iscsi_np *np;
134 struct iscsi_portal_group *tpg;
135 struct iscsi_tpg_np *tpg_np_iser = NULL;
136 char *endptr;
137 u32 op;
138 int rc = 0;
139
140 op = simple_strtoul(page, &endptr, 0);
141 if ((op != 1) && (op != 0)) {
142 pr_err("Illegal value for tpg_enable: %u\n", op);
143 return -EINVAL;
144 }
145 np = tpg_np->tpg_np;
146 if (!np) {
147 pr_err("Unable to locate struct iscsi_np from"
148 " struct iscsi_tpg_np\n");
149 return -EINVAL;
150 }
151
152 tpg = tpg_np->tpg;
153 if (iscsit_get_tpg(tpg) < 0)
154 return -EINVAL;
155
156 if (op) {
157 rc = request_module("ib_isert");
158 if (rc != 0) {
159 pr_warn("Unable to request_module for ib_isert\n");
160 rc = 0;
161 }
162
163 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
164 tpg_np, ISCSI_INFINIBAND);
165 if (IS_ERR(tpg_np_iser)) {
166 rc = PTR_ERR(tpg_np_iser);
167 goto out;
168 }
169 } else {
170 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
171 if (tpg_np_iser) {
172 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
173 if (rc < 0)
174 goto out;
175 }
176 }
177
178 iscsit_put_tpg(tpg);
179 return count;
180 out:
181 iscsit_put_tpg(tpg);
182 return rc;
183 }
184
185 CONFIGFS_ATTR(lio_target_np_, sctp);
186 CONFIGFS_ATTR(lio_target_np_, iser);
187
188 static struct configfs_attribute *lio_target_portal_attrs[] = {
189 &lio_target_np_attr_sctp,
190 &lio_target_np_attr_iser,
191 NULL,
192 };
193
194 /* Stop items for lio_target_portal_cit */
195
196 /* Start items for lio_target_np_cit */
197
198 #define MAX_PORTAL_LEN 256
199
200 static struct se_tpg_np *lio_target_call_addnptotpg(
201 struct se_portal_group *se_tpg,
202 struct config_group *group,
203 const char *name)
204 {
205 struct iscsi_portal_group *tpg;
206 struct iscsi_tpg_np *tpg_np;
207 char *str, *str2, *ip_str, *port_str;
208 struct sockaddr_storage sockaddr;
209 struct sockaddr_in *sock_in;
210 struct sockaddr_in6 *sock_in6;
211 unsigned long port;
212 int ret;
213 char buf[MAX_PORTAL_LEN + 1];
214
215 if (strlen(name) > MAX_PORTAL_LEN) {
216 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
217 (int)strlen(name), MAX_PORTAL_LEN);
218 return ERR_PTR(-EOVERFLOW);
219 }
220 memset(buf, 0, MAX_PORTAL_LEN + 1);
221 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
222
223 memset(&sockaddr, 0, sizeof(struct sockaddr_storage));
224
225 str = strstr(buf, "[");
226 if (str) {
227 const char *end;
228
229 str2 = strstr(str, "]");
230 if (!str2) {
231 pr_err("Unable to locate trailing \"]\""
232 " in IPv6 iSCSI network portal address\n");
233 return ERR_PTR(-EINVAL);
234 }
235 str++; /* Skip over leading "[" */
236 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
237 str2++; /* Skip over the \0 */
238 port_str = strstr(str2, ":");
239 if (!port_str) {
240 pr_err("Unable to locate \":port\""
241 " in IPv6 iSCSI network portal address\n");
242 return ERR_PTR(-EINVAL);
243 }
244 *port_str = '\0'; /* Terminate string for IP */
245 port_str++; /* Skip over ":" */
246
247 ret = kstrtoul(port_str, 0, &port);
248 if (ret < 0) {
249 pr_err("kstrtoul() failed for port_str: %d\n", ret);
250 return ERR_PTR(ret);
251 }
252 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
253 sock_in6->sin6_family = AF_INET6;
254 sock_in6->sin6_port = htons((unsigned short)port);
255 ret = in6_pton(str, -1,
256 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
257 if (ret <= 0) {
258 pr_err("in6_pton returned: %d\n", ret);
259 return ERR_PTR(-EINVAL);
260 }
261 } else {
262 str = ip_str = &buf[0];
263 port_str = strstr(ip_str, ":");
264 if (!port_str) {
265 pr_err("Unable to locate \":port\""
266 " in IPv4 iSCSI network portal address\n");
267 return ERR_PTR(-EINVAL);
268 }
269 *port_str = '\0'; /* Terminate string for IP */
270 port_str++; /* Skip over ":" */
271
272 ret = kstrtoul(port_str, 0, &port);
273 if (ret < 0) {
274 pr_err("kstrtoul() failed for port_str: %d\n", ret);
275 return ERR_PTR(ret);
276 }
277 sock_in = (struct sockaddr_in *)&sockaddr;
278 sock_in->sin_family = AF_INET;
279 sock_in->sin_port = htons((unsigned short)port);
280 sock_in->sin_addr.s_addr = in_aton(ip_str);
281 }
282 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
283 ret = iscsit_get_tpg(tpg);
284 if (ret < 0)
285 return ERR_PTR(-EINVAL);
286
287 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
288 " PORTAL: %s\n",
289 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
290 tpg->tpgt, name);
291 /*
292 * Assume ISCSI_TCP by default. Other network portals for other
293 * iSCSI fabrics:
294 *
295 * Traditional iSCSI over SCTP (initial support)
296 * iSER/TCP (TODO, hardware available)
297 * iSER/SCTP (TODO, software emulation with osc-iwarp)
298 * iSER/IB (TODO, hardware available)
299 *
300 * can be enabled with attributes under
301 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
302 *
303 */
304 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
305 ISCSI_TCP);
306 if (IS_ERR(tpg_np)) {
307 iscsit_put_tpg(tpg);
308 return ERR_CAST(tpg_np);
309 }
310 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
311
312 iscsit_put_tpg(tpg);
313 return &tpg_np->se_tpg_np;
314 }
315
316 static void lio_target_call_delnpfromtpg(
317 struct se_tpg_np *se_tpg_np)
318 {
319 struct iscsi_portal_group *tpg;
320 struct iscsi_tpg_np *tpg_np;
321 struct se_portal_group *se_tpg;
322 int ret;
323
324 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
325 tpg = tpg_np->tpg;
326 ret = iscsit_get_tpg(tpg);
327 if (ret < 0)
328 return;
329
330 se_tpg = &tpg->tpg_se_tpg;
331 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
332 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
333 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
334
335 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
336 if (ret < 0)
337 goto out;
338
339 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
340 out:
341 iscsit_put_tpg(tpg);
342 }
343
344 /* End items for lio_target_np_cit */
345
346 /* Start items for lio_target_nacl_attrib_cit */
347
348 #define ISCSI_NACL_ATTR(name) \
349 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
350 char *page) \
351 { \
352 struct se_node_acl *se_nacl = attrib_to_nacl(item); \
353 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
354 se_node_acl); \
355 \
356 return sprintf(page, "%u\n", nacl->node_attrib.name); \
357 } \
358 \
359 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
360 const char *page, size_t count) \
361 { \
362 struct se_node_acl *se_nacl = attrib_to_nacl(item); \
363 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
364 se_node_acl); \
365 u32 val; \
366 int ret; \
367 \
368 ret = kstrtou32(page, 0, &val); \
369 if (ret) \
370 return ret; \
371 ret = iscsit_na_##name(nacl, val); \
372 if (ret < 0) \
373 return ret; \
374 \
375 return count; \
376 } \
377 \
378 CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
379
380 ISCSI_NACL_ATTR(dataout_timeout);
381 ISCSI_NACL_ATTR(dataout_timeout_retries);
382 ISCSI_NACL_ATTR(default_erl);
383 ISCSI_NACL_ATTR(nopin_timeout);
384 ISCSI_NACL_ATTR(nopin_response_timeout);
385 ISCSI_NACL_ATTR(random_datain_pdu_offsets);
386 ISCSI_NACL_ATTR(random_datain_seq_offsets);
387 ISCSI_NACL_ATTR(random_r2t_offsets);
388
389 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
390 &iscsi_nacl_attrib_attr_dataout_timeout,
391 &iscsi_nacl_attrib_attr_dataout_timeout_retries,
392 &iscsi_nacl_attrib_attr_default_erl,
393 &iscsi_nacl_attrib_attr_nopin_timeout,
394 &iscsi_nacl_attrib_attr_nopin_response_timeout,
395 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
396 &iscsi_nacl_attrib_attr_random_datain_seq_offsets,
397 &iscsi_nacl_attrib_attr_random_r2t_offsets,
398 NULL,
399 };
400
401 /* End items for lio_target_nacl_attrib_cit */
402
403 /* Start items for lio_target_nacl_auth_cit */
404
405 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \
406 static ssize_t __iscsi_##prefix##_##name##_show( \
407 struct iscsi_node_acl *nacl, \
408 char *page) \
409 { \
410 struct iscsi_node_auth *auth = &nacl->node_auth; \
411 \
412 if (!capable(CAP_SYS_ADMIN)) \
413 return -EPERM; \
414 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
415 } \
416 \
417 static ssize_t __iscsi_##prefix##_##name##_store( \
418 struct iscsi_node_acl *nacl, \
419 const char *page, \
420 size_t count) \
421 { \
422 struct iscsi_node_auth *auth = &nacl->node_auth; \
423 \
424 if (!capable(CAP_SYS_ADMIN)) \
425 return -EPERM; \
426 if (count >= sizeof(auth->name)) \
427 return -EINVAL; \
428 snprintf(auth->name, sizeof(auth->name), "%s", page); \
429 if (!strncmp("NULL", auth->name, 4)) \
430 auth->naf_flags &= ~flags; \
431 else \
432 auth->naf_flags |= flags; \
433 \
434 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
435 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
436 auth->authenticate_target = 1; \
437 else \
438 auth->authenticate_target = 0; \
439 \
440 return count; \
441 }
442
443 #define DEF_NACL_AUTH_STR(name, flags) \
444 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
445 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
446 char *page) \
447 { \
448 struct se_node_acl *nacl = auth_to_nacl(item); \
449 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
450 struct iscsi_node_acl, se_node_acl), page); \
451 } \
452 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
453 const char *page, size_t count) \
454 { \
455 struct se_node_acl *nacl = auth_to_nacl(item); \
456 return __iscsi_nacl_auth_##name##_store(container_of(nacl, \
457 struct iscsi_node_acl, se_node_acl), page, count); \
458 } \
459 \
460 CONFIGFS_ATTR(iscsi_nacl_auth_, name)
461
462 /*
463 * One-way authentication userid
464 */
465 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
466 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
467 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
468 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
469
470 #define __DEF_NACL_AUTH_INT(prefix, name) \
471 static ssize_t __iscsi_##prefix##_##name##_show( \
472 struct iscsi_node_acl *nacl, \
473 char *page) \
474 { \
475 struct iscsi_node_auth *auth = &nacl->node_auth; \
476 \
477 if (!capable(CAP_SYS_ADMIN)) \
478 return -EPERM; \
479 \
480 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
481 }
482
483 #define DEF_NACL_AUTH_INT(name) \
484 __DEF_NACL_AUTH_INT(nacl_auth, name) \
485 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
486 char *page) \
487 { \
488 struct se_node_acl *nacl = auth_to_nacl(item); \
489 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
490 struct iscsi_node_acl, se_node_acl), page); \
491 } \
492 \
493 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
494
495 DEF_NACL_AUTH_INT(authenticate_target);
496
497 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
498 &iscsi_nacl_auth_attr_userid,
499 &iscsi_nacl_auth_attr_password,
500 &iscsi_nacl_auth_attr_authenticate_target,
501 &iscsi_nacl_auth_attr_userid_mutual,
502 &iscsi_nacl_auth_attr_password_mutual,
503 NULL,
504 };
505
506 /* End items for lio_target_nacl_auth_cit */
507
508 /* Start items for lio_target_nacl_param_cit */
509
510 #define ISCSI_NACL_PARAM(name) \
511 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
512 char *page) \
513 { \
514 struct se_node_acl *se_nacl = param_to_nacl(item); \
515 struct iscsi_session *sess; \
516 struct se_session *se_sess; \
517 ssize_t rb; \
518 \
519 spin_lock_bh(&se_nacl->nacl_sess_lock); \
520 se_sess = se_nacl->nacl_sess; \
521 if (!se_sess) { \
522 rb = snprintf(page, PAGE_SIZE, \
523 "No Active iSCSI Session\n"); \
524 } else { \
525 sess = se_sess->fabric_sess_ptr; \
526 rb = snprintf(page, PAGE_SIZE, "%u\n", \
527 (u32)sess->sess_ops->name); \
528 } \
529 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
530 \
531 return rb; \
532 } \
533 \
534 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
535
536 ISCSI_NACL_PARAM(MaxConnections);
537 ISCSI_NACL_PARAM(InitialR2T);
538 ISCSI_NACL_PARAM(ImmediateData);
539 ISCSI_NACL_PARAM(MaxBurstLength);
540 ISCSI_NACL_PARAM(FirstBurstLength);
541 ISCSI_NACL_PARAM(DefaultTime2Wait);
542 ISCSI_NACL_PARAM(DefaultTime2Retain);
543 ISCSI_NACL_PARAM(MaxOutstandingR2T);
544 ISCSI_NACL_PARAM(DataPDUInOrder);
545 ISCSI_NACL_PARAM(DataSequenceInOrder);
546 ISCSI_NACL_PARAM(ErrorRecoveryLevel);
547
548 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
549 &iscsi_nacl_param_attr_MaxConnections,
550 &iscsi_nacl_param_attr_InitialR2T,
551 &iscsi_nacl_param_attr_ImmediateData,
552 &iscsi_nacl_param_attr_MaxBurstLength,
553 &iscsi_nacl_param_attr_FirstBurstLength,
554 &iscsi_nacl_param_attr_DefaultTime2Wait,
555 &iscsi_nacl_param_attr_DefaultTime2Retain,
556 &iscsi_nacl_param_attr_MaxOutstandingR2T,
557 &iscsi_nacl_param_attr_DataPDUInOrder,
558 &iscsi_nacl_param_attr_DataSequenceInOrder,
559 &iscsi_nacl_param_attr_ErrorRecoveryLevel,
560 NULL,
561 };
562
563 /* End items for lio_target_nacl_param_cit */
564
565 /* Start items for lio_target_acl_cit */
566
567 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
568 {
569 struct se_node_acl *se_nacl = acl_to_nacl(item);
570 struct iscsi_session *sess;
571 struct iscsi_conn *conn;
572 struct se_session *se_sess;
573 ssize_t rb = 0;
574 u32 max_cmd_sn;
575
576 spin_lock_bh(&se_nacl->nacl_sess_lock);
577 se_sess = se_nacl->nacl_sess;
578 if (!se_sess) {
579 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
580 " Endpoint: %s\n", se_nacl->initiatorname);
581 } else {
582 sess = se_sess->fabric_sess_ptr;
583
584 rb += sprintf(page+rb, "InitiatorName: %s\n",
585 sess->sess_ops->InitiatorName);
586 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
587 sess->sess_ops->InitiatorAlias);
588
589 rb += sprintf(page+rb,
590 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",
591 sess->sid, sess->isid, sess->tsih);
592 rb += sprintf(page+rb, "SessionType: %s\n",
593 (sess->sess_ops->SessionType) ?
594 "Discovery" : "Normal");
595 rb += sprintf(page+rb, "Session State: ");
596 switch (sess->session_state) {
597 case TARG_SESS_STATE_FREE:
598 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
599 break;
600 case TARG_SESS_STATE_ACTIVE:
601 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
602 break;
603 case TARG_SESS_STATE_LOGGED_IN:
604 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
605 break;
606 case TARG_SESS_STATE_FAILED:
607 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
608 break;
609 case TARG_SESS_STATE_IN_CONTINUE:
610 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
611 break;
612 default:
613 rb += sprintf(page+rb, "ERROR: Unknown Session"
614 " State!\n");
615 break;
616 }
617
618 rb += sprintf(page+rb, "---------------------[iSCSI Session"
619 " Values]-----------------------\n");
620 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
621 " : MaxCmdSN : ITT : TTT\n");
622 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
623 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
624 " 0x%08x 0x%08x\n",
625 sess->cmdsn_window,
626 (max_cmd_sn - sess->exp_cmd_sn) + 1,
627 sess->exp_cmd_sn, max_cmd_sn,
628 sess->init_task_tag, sess->targ_xfer_tag);
629 rb += sprintf(page+rb, "----------------------[iSCSI"
630 " Connections]-------------------------\n");
631
632 spin_lock(&sess->conn_lock);
633 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
634 rb += sprintf(page+rb, "CID: %hu Connection"
635 " State: ", conn->cid);
636 switch (conn->conn_state) {
637 case TARG_CONN_STATE_FREE:
638 rb += sprintf(page+rb,
639 "TARG_CONN_STATE_FREE\n");
640 break;
641 case TARG_CONN_STATE_XPT_UP:
642 rb += sprintf(page+rb,
643 "TARG_CONN_STATE_XPT_UP\n");
644 break;
645 case TARG_CONN_STATE_IN_LOGIN:
646 rb += sprintf(page+rb,
647 "TARG_CONN_STATE_IN_LOGIN\n");
648 break;
649 case TARG_CONN_STATE_LOGGED_IN:
650 rb += sprintf(page+rb,
651 "TARG_CONN_STATE_LOGGED_IN\n");
652 break;
653 case TARG_CONN_STATE_IN_LOGOUT:
654 rb += sprintf(page+rb,
655 "TARG_CONN_STATE_IN_LOGOUT\n");
656 break;
657 case TARG_CONN_STATE_LOGOUT_REQUESTED:
658 rb += sprintf(page+rb,
659 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
660 break;
661 case TARG_CONN_STATE_CLEANUP_WAIT:
662 rb += sprintf(page+rb,
663 "TARG_CONN_STATE_CLEANUP_WAIT\n");
664 break;
665 default:
666 rb += sprintf(page+rb,
667 "ERROR: Unknown Connection State!\n");
668 break;
669 }
670
671 rb += sprintf(page+rb, " Address %pISc %s", &conn->login_sockaddr,
672 (conn->network_transport == ISCSI_TCP) ?
673 "TCP" : "SCTP");
674 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
675 conn->stat_sn);
676 }
677 spin_unlock(&sess->conn_lock);
678 }
679 spin_unlock_bh(&se_nacl->nacl_sess_lock);
680
681 return rb;
682 }
683
684 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
685 char *page)
686 {
687 return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth);
688 }
689
690 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
691 const char *page, size_t count)
692 {
693 struct se_node_acl *se_nacl = acl_to_nacl(item);
694 struct se_portal_group *se_tpg = se_nacl->se_tpg;
695 struct iscsi_portal_group *tpg = container_of(se_tpg,
696 struct iscsi_portal_group, tpg_se_tpg);
697 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
698 u32 cmdsn_depth = 0;
699 int ret;
700
701 ret = kstrtou32(page, 0, &cmdsn_depth);
702 if (ret)
703 return ret;
704 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
705 pr_err("Passed cmdsn_depth: %u exceeds"
706 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
707 TA_DEFAULT_CMDSN_DEPTH_MAX);
708 return -EINVAL;
709 }
710 acl_ci = &se_nacl->acl_group.cg_item;
711 if (!acl_ci) {
712 pr_err("Unable to locatel acl_ci\n");
713 return -EINVAL;
714 }
715 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
716 if (!tpg_ci) {
717 pr_err("Unable to locate tpg_ci\n");
718 return -EINVAL;
719 }
720 wwn_ci = &tpg_ci->ci_group->cg_item;
721 if (!wwn_ci) {
722 pr_err("Unable to locate config_item wwn_ci\n");
723 return -EINVAL;
724 }
725
726 if (iscsit_get_tpg(tpg) < 0)
727 return -EINVAL;
728
729 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);
730
731 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
732 "InitiatorName: %s\n", config_item_name(wwn_ci),
733 config_item_name(tpg_ci), cmdsn_depth,
734 config_item_name(acl_ci));
735
736 iscsit_put_tpg(tpg);
737 return (!ret) ? count : (ssize_t)ret;
738 }
739
740 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
741 {
742 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
743 }
744
745 static ssize_t lio_target_nacl_tag_store(struct config_item *item,
746 const char *page, size_t count)
747 {
748 struct se_node_acl *se_nacl = acl_to_nacl(item);
749 int ret;
750
751 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
752
753 if (ret < 0)
754 return ret;
755 return count;
756 }
757
758 CONFIGFS_ATTR_RO(lio_target_nacl_, info);
759 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
760 CONFIGFS_ATTR(lio_target_nacl_, tag);
761
762 static struct configfs_attribute *lio_target_initiator_attrs[] = {
763 &lio_target_nacl_attr_info,
764 &lio_target_nacl_attr_cmdsn_depth,
765 &lio_target_nacl_attr_tag,
766 NULL,
767 };
768
769 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
770 const char *name)
771 {
772 struct iscsi_node_acl *acl =
773 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
774
775 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
776 "iscsi_sess_stats", &iscsi_stat_sess_cit);
777 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
778 &se_nacl->acl_fabric_stat_group);
779 return 0;
780 }
781
782 /* End items for lio_target_acl_cit */
783
784 /* Start items for lio_target_tpg_attrib_cit */
785
786 #define DEF_TPG_ATTRIB(name) \
787 \
788 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
789 char *page) \
790 { \
791 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
792 struct iscsi_portal_group *tpg = container_of(se_tpg, \
793 struct iscsi_portal_group, tpg_se_tpg); \
794 ssize_t rb; \
795 \
796 if (iscsit_get_tpg(tpg) < 0) \
797 return -EINVAL; \
798 \
799 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
800 iscsit_put_tpg(tpg); \
801 return rb; \
802 } \
803 \
804 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
805 const char *page, size_t count) \
806 { \
807 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
808 struct iscsi_portal_group *tpg = container_of(se_tpg, \
809 struct iscsi_portal_group, tpg_se_tpg); \
810 u32 val; \
811 int ret; \
812 \
813 if (iscsit_get_tpg(tpg) < 0) \
814 return -EINVAL; \
815 \
816 ret = kstrtou32(page, 0, &val); \
817 if (ret) \
818 goto out; \
819 ret = iscsit_ta_##name(tpg, val); \
820 if (ret < 0) \
821 goto out; \
822 \
823 iscsit_put_tpg(tpg); \
824 return count; \
825 out: \
826 iscsit_put_tpg(tpg); \
827 return ret; \
828 } \
829 CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
830
831 DEF_TPG_ATTRIB(authentication);
832 DEF_TPG_ATTRIB(login_timeout);
833 DEF_TPG_ATTRIB(netif_timeout);
834 DEF_TPG_ATTRIB(generate_node_acls);
835 DEF_TPG_ATTRIB(default_cmdsn_depth);
836 DEF_TPG_ATTRIB(cache_dynamic_acls);
837 DEF_TPG_ATTRIB(demo_mode_write_protect);
838 DEF_TPG_ATTRIB(prod_mode_write_protect);
839 DEF_TPG_ATTRIB(demo_mode_discovery);
840 DEF_TPG_ATTRIB(default_erl);
841 DEF_TPG_ATTRIB(t10_pi);
842 DEF_TPG_ATTRIB(fabric_prot_type);
843 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
844
845 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
846 &iscsi_tpg_attrib_attr_authentication,
847 &iscsi_tpg_attrib_attr_login_timeout,
848 &iscsi_tpg_attrib_attr_netif_timeout,
849 &iscsi_tpg_attrib_attr_generate_node_acls,
850 &iscsi_tpg_attrib_attr_default_cmdsn_depth,
851 &iscsi_tpg_attrib_attr_cache_dynamic_acls,
852 &iscsi_tpg_attrib_attr_demo_mode_write_protect,
853 &iscsi_tpg_attrib_attr_prod_mode_write_protect,
854 &iscsi_tpg_attrib_attr_demo_mode_discovery,
855 &iscsi_tpg_attrib_attr_default_erl,
856 &iscsi_tpg_attrib_attr_t10_pi,
857 &iscsi_tpg_attrib_attr_fabric_prot_type,
858 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
859 NULL,
860 };
861
862 /* End items for lio_target_tpg_attrib_cit */
863
864 /* Start items for lio_target_tpg_auth_cit */
865
866 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
867 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
868 char *page) \
869 { \
870 struct iscsi_portal_group *tpg = container_of(se_tpg, \
871 struct iscsi_portal_group, tpg_se_tpg); \
872 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
873 \
874 if (!capable(CAP_SYS_ADMIN)) \
875 return -EPERM; \
876 \
877 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
878 } \
879 \
880 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
881 const char *page, size_t count) \
882 { \
883 struct iscsi_portal_group *tpg = container_of(se_tpg, \
884 struct iscsi_portal_group, tpg_se_tpg); \
885 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
886 \
887 if (!capable(CAP_SYS_ADMIN)) \
888 return -EPERM; \
889 \
890 snprintf(auth->name, sizeof(auth->name), "%s", page); \
891 if (!(strncmp("NULL", auth->name, 4))) \
892 auth->naf_flags &= ~flags; \
893 else \
894 auth->naf_flags |= flags; \
895 \
896 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
897 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
898 auth->authenticate_target = 1; \
899 else \
900 auth->authenticate_target = 0; \
901 \
902 return count; \
903 }
904
905 #define DEF_TPG_AUTH_STR(name, flags) \
906 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
907 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
908 char *page) \
909 { \
910 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
911 } \
912 \
913 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \
914 const char *page, size_t count) \
915 { \
916 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
917 } \
918 \
919 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
920
921
922 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
923 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
924 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
925 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
926
927 #define __DEF_TPG_AUTH_INT(prefix, name) \
928 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
929 char *page) \
930 { \
931 struct iscsi_portal_group *tpg = container_of(se_tpg, \
932 struct iscsi_portal_group, tpg_se_tpg); \
933 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
934 \
935 if (!capable(CAP_SYS_ADMIN)) \
936 return -EPERM; \
937 \
938 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
939 }
940
941 #define DEF_TPG_AUTH_INT(name) \
942 __DEF_TPG_AUTH_INT(tpg_auth, name) \
943 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
944 char *page) \
945 { \
946 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
947 } \
948 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
949
950 DEF_TPG_AUTH_INT(authenticate_target);
951
952 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
953 &iscsi_tpg_auth_attr_userid,
954 &iscsi_tpg_auth_attr_password,
955 &iscsi_tpg_auth_attr_authenticate_target,
956 &iscsi_tpg_auth_attr_userid_mutual,
957 &iscsi_tpg_auth_attr_password_mutual,
958 NULL,
959 };
960
961 /* End items for lio_target_tpg_auth_cit */
962
963 /* Start items for lio_target_tpg_param_cit */
964
965 #define DEF_TPG_PARAM(name) \
966 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
967 char *page) \
968 { \
969 struct se_portal_group *se_tpg = param_to_tpg(item); \
970 struct iscsi_portal_group *tpg = container_of(se_tpg, \
971 struct iscsi_portal_group, tpg_se_tpg); \
972 struct iscsi_param *param; \
973 ssize_t rb; \
974 \
975 if (iscsit_get_tpg(tpg) < 0) \
976 return -EINVAL; \
977 \
978 param = iscsi_find_param_from_key(__stringify(name), \
979 tpg->param_list); \
980 if (!param) { \
981 iscsit_put_tpg(tpg); \
982 return -EINVAL; \
983 } \
984 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
985 \
986 iscsit_put_tpg(tpg); \
987 return rb; \
988 } \
989 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
990 const char *page, size_t count) \
991 { \
992 struct se_portal_group *se_tpg = param_to_tpg(item); \
993 struct iscsi_portal_group *tpg = container_of(se_tpg, \
994 struct iscsi_portal_group, tpg_se_tpg); \
995 char *buf; \
996 int ret, len; \
997 \
998 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
999 if (!buf) \
1000 return -ENOMEM; \
1001 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1002 if (isspace(buf[len-1])) \
1003 buf[len-1] = '\0'; /* Kill newline */ \
1004 \
1005 if (iscsit_get_tpg(tpg) < 0) { \
1006 kfree(buf); \
1007 return -EINVAL; \
1008 } \
1009 \
1010 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1011 if (ret < 0) \
1012 goto out; \
1013 \
1014 kfree(buf); \
1015 iscsit_put_tpg(tpg); \
1016 return count; \
1017 out: \
1018 kfree(buf); \
1019 iscsit_put_tpg(tpg); \
1020 return -EINVAL; \
1021 } \
1022 CONFIGFS_ATTR(iscsi_tpg_param_, name)
1023
1024 DEF_TPG_PARAM(AuthMethod);
1025 DEF_TPG_PARAM(HeaderDigest);
1026 DEF_TPG_PARAM(DataDigest);
1027 DEF_TPG_PARAM(MaxConnections);
1028 DEF_TPG_PARAM(TargetAlias);
1029 DEF_TPG_PARAM(InitialR2T);
1030 DEF_TPG_PARAM(ImmediateData);
1031 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1032 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1033 DEF_TPG_PARAM(MaxBurstLength);
1034 DEF_TPG_PARAM(FirstBurstLength);
1035 DEF_TPG_PARAM(DefaultTime2Wait);
1036 DEF_TPG_PARAM(DefaultTime2Retain);
1037 DEF_TPG_PARAM(MaxOutstandingR2T);
1038 DEF_TPG_PARAM(DataPDUInOrder);
1039 DEF_TPG_PARAM(DataSequenceInOrder);
1040 DEF_TPG_PARAM(ErrorRecoveryLevel);
1041 DEF_TPG_PARAM(IFMarker);
1042 DEF_TPG_PARAM(OFMarker);
1043 DEF_TPG_PARAM(IFMarkInt);
1044 DEF_TPG_PARAM(OFMarkInt);
1045
1046 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1047 &iscsi_tpg_param_attr_AuthMethod,
1048 &iscsi_tpg_param_attr_HeaderDigest,
1049 &iscsi_tpg_param_attr_DataDigest,
1050 &iscsi_tpg_param_attr_MaxConnections,
1051 &iscsi_tpg_param_attr_TargetAlias,
1052 &iscsi_tpg_param_attr_InitialR2T,
1053 &iscsi_tpg_param_attr_ImmediateData,
1054 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
1055 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
1056 &iscsi_tpg_param_attr_MaxBurstLength,
1057 &iscsi_tpg_param_attr_FirstBurstLength,
1058 &iscsi_tpg_param_attr_DefaultTime2Wait,
1059 &iscsi_tpg_param_attr_DefaultTime2Retain,
1060 &iscsi_tpg_param_attr_MaxOutstandingR2T,
1061 &iscsi_tpg_param_attr_DataPDUInOrder,
1062 &iscsi_tpg_param_attr_DataSequenceInOrder,
1063 &iscsi_tpg_param_attr_ErrorRecoveryLevel,
1064 &iscsi_tpg_param_attr_IFMarker,
1065 &iscsi_tpg_param_attr_OFMarker,
1066 &iscsi_tpg_param_attr_IFMarkInt,
1067 &iscsi_tpg_param_attr_OFMarkInt,
1068 NULL,
1069 };
1070
1071 /* End items for lio_target_tpg_param_cit */
1072
1073 /* Start items for lio_target_tpg_cit */
1074
1075 static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page)
1076 {
1077 struct se_portal_group *se_tpg = to_tpg(item);
1078 struct iscsi_portal_group *tpg = container_of(se_tpg,
1079 struct iscsi_portal_group, tpg_se_tpg);
1080 ssize_t len;
1081
1082 spin_lock(&tpg->tpg_state_lock);
1083 len = sprintf(page, "%d\n",
1084 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1085 spin_unlock(&tpg->tpg_state_lock);
1086
1087 return len;
1088 }
1089
1090 static ssize_t lio_target_tpg_enable_store(struct config_item *item,
1091 const char *page, size_t count)
1092 {
1093 struct se_portal_group *se_tpg = to_tpg(item);
1094 struct iscsi_portal_group *tpg = container_of(se_tpg,
1095 struct iscsi_portal_group, tpg_se_tpg);
1096 u32 op;
1097 int ret;
1098
1099 ret = kstrtou32(page, 0, &op);
1100 if (ret)
1101 return ret;
1102 if ((op != 1) && (op != 0)) {
1103 pr_err("Illegal value for tpg_enable: %u\n", op);
1104 return -EINVAL;
1105 }
1106
1107 ret = iscsit_get_tpg(tpg);
1108 if (ret < 0)
1109 return -EINVAL;
1110
1111 if (op) {
1112 ret = iscsit_tpg_enable_portal_group(tpg);
1113 if (ret < 0)
1114 goto out;
1115 } else {
1116 /*
1117 * iscsit_tpg_disable_portal_group() assumes force=1
1118 */
1119 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1120 if (ret < 0)
1121 goto out;
1122 }
1123
1124 iscsit_put_tpg(tpg);
1125 return count;
1126 out:
1127 iscsit_put_tpg(tpg);
1128 return -EINVAL;
1129 }
1130
1131
1132 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1133 char *page)
1134 {
1135 return target_show_dynamic_sessions(to_tpg(item), page);
1136 }
1137
1138 CONFIGFS_ATTR(lio_target_tpg_, enable);
1139 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1140
1141 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1142 &lio_target_tpg_attr_enable,
1143 &lio_target_tpg_attr_dynamic_sessions,
1144 NULL,
1145 };
1146
1147 /* End items for lio_target_tpg_cit */
1148
1149 /* Start items for lio_target_tiqn_cit */
1150
1151 static struct se_portal_group *lio_target_tiqn_addtpg(
1152 struct se_wwn *wwn,
1153 struct config_group *group,
1154 const char *name)
1155 {
1156 struct iscsi_portal_group *tpg;
1157 struct iscsi_tiqn *tiqn;
1158 char *tpgt_str;
1159 int ret;
1160 u16 tpgt;
1161
1162 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1163 /*
1164 * Only tpgt_# directory groups can be created below
1165 * target/iscsi/iqn.superturodiskarry/
1166 */
1167 tpgt_str = strstr(name, "tpgt_");
1168 if (!tpgt_str) {
1169 pr_err("Unable to locate \"tpgt_#\" directory"
1170 " group\n");
1171 return NULL;
1172 }
1173 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1174 ret = kstrtou16(tpgt_str, 0, &tpgt);
1175 if (ret)
1176 return NULL;
1177
1178 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1179 if (!tpg)
1180 return NULL;
1181
1182 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1183 if (ret < 0)
1184 return NULL;
1185
1186 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1187 if (ret != 0)
1188 goto out;
1189
1190 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1191 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1192 name);
1193 return &tpg->tpg_se_tpg;
1194 out:
1195 core_tpg_deregister(&tpg->tpg_se_tpg);
1196 kfree(tpg);
1197 return NULL;
1198 }
1199
1200 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1201 {
1202 struct iscsi_portal_group *tpg;
1203 struct iscsi_tiqn *tiqn;
1204
1205 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1206 tiqn = tpg->tpg_tiqn;
1207 /*
1208 * iscsit_tpg_del_portal_group() assumes force=1
1209 */
1210 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1211 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1212 }
1213
1214 /* End items for lio_target_tiqn_cit */
1215
1216 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1217
1218 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1219 char *page)
1220 {
1221 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1222 }
1223
1224 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1225
1226 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1227 &lio_target_wwn_attr_lio_version,
1228 NULL,
1229 };
1230
1231 static struct se_wwn *lio_target_call_coreaddtiqn(
1232 struct target_fabric_configfs *tf,
1233 struct config_group *group,
1234 const char *name)
1235 {
1236 struct iscsi_tiqn *tiqn;
1237
1238 tiqn = iscsit_add_tiqn((unsigned char *)name);
1239 if (IS_ERR(tiqn))
1240 return ERR_CAST(tiqn);
1241
1242 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1243 "iscsi_instance", &iscsi_stat_instance_cit);
1244 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1245 &tiqn->tiqn_wwn.fabric_stat_group);
1246
1247 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1248 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1249 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1250 &tiqn->tiqn_wwn.fabric_stat_group);
1251
1252 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1253 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1254 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1255 &tiqn->tiqn_wwn.fabric_stat_group);
1256
1257 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1258 "iscsi_login_stats", &iscsi_stat_login_cit);
1259 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1260 &tiqn->tiqn_wwn.fabric_stat_group);
1261
1262 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1263 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1264 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1265 &tiqn->tiqn_wwn.fabric_stat_group);
1266
1267
1268 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1269 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1270 " %s\n", name);
1271 return &tiqn->tiqn_wwn;
1272 }
1273
1274 static void lio_target_call_coredeltiqn(
1275 struct se_wwn *wwn)
1276 {
1277 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1278
1279 configfs_remove_default_groups(&tiqn->tiqn_wwn.fabric_stat_group);
1280
1281 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1282 tiqn->tiqn);
1283 iscsit_del_tiqn(tiqn);
1284 }
1285
1286 /* End LIO-Target TIQN struct contig_lio_target_cit */
1287
1288 /* Start lio_target_discovery_auth_cit */
1289
1290 #define DEF_DISC_AUTH_STR(name, flags) \
1291 __DEF_NACL_AUTH_STR(disc, name, flags) \
1292 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1293 { \
1294 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1295 page); \
1296 } \
1297 static ssize_t iscsi_disc_##name##_store(struct config_item *item, \
1298 const char *page, size_t count) \
1299 { \
1300 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \
1301 page, count); \
1302 \
1303 } \
1304 CONFIGFS_ATTR(iscsi_disc_, name)
1305
1306 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1307 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1308 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1309 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1310
1311 #define DEF_DISC_AUTH_INT(name) \
1312 __DEF_NACL_AUTH_INT(disc, name) \
1313 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1314 { \
1315 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1316 page); \
1317 } \
1318 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1319
1320 DEF_DISC_AUTH_INT(authenticate_target);
1321
1322
1323 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1324 char *page)
1325 {
1326 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1327
1328 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1329 }
1330
1331 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1332 const char *page, size_t count)
1333 {
1334 struct iscsi_param *param;
1335 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1336 u32 op;
1337 int err;
1338
1339 err = kstrtou32(page, 0, &op);
1340 if (err)
1341 return -EINVAL;
1342 if ((op != 1) && (op != 0)) {
1343 pr_err("Illegal value for enforce_discovery_auth:"
1344 " %u\n", op);
1345 return -EINVAL;
1346 }
1347
1348 if (!discovery_tpg) {
1349 pr_err("iscsit_global->discovery_tpg is NULL\n");
1350 return -EINVAL;
1351 }
1352
1353 param = iscsi_find_param_from_key(AUTHMETHOD,
1354 discovery_tpg->param_list);
1355 if (!param)
1356 return -EINVAL;
1357
1358 if (op) {
1359 /*
1360 * Reset the AuthMethod key to CHAP.
1361 */
1362 if (iscsi_update_param_value(param, CHAP) < 0)
1363 return -EINVAL;
1364
1365 discovery_tpg->tpg_attrib.authentication = 1;
1366 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1367 pr_debug("LIO-CORE[0] Successfully enabled"
1368 " authentication enforcement for iSCSI"
1369 " Discovery TPG\n");
1370 } else {
1371 /*
1372 * Reset the AuthMethod key to CHAP,None
1373 */
1374 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1375 return -EINVAL;
1376
1377 discovery_tpg->tpg_attrib.authentication = 0;
1378 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1379 pr_debug("LIO-CORE[0] Successfully disabled"
1380 " authentication enforcement for iSCSI"
1381 " Discovery TPG\n");
1382 }
1383
1384 return count;
1385 }
1386
1387 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1388
1389 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1390 &iscsi_disc_attr_userid,
1391 &iscsi_disc_attr_password,
1392 &iscsi_disc_attr_authenticate_target,
1393 &iscsi_disc_attr_userid_mutual,
1394 &iscsi_disc_attr_password_mutual,
1395 &iscsi_disc_attr_enforce_discovery_auth,
1396 NULL,
1397 };
1398
1399 /* End lio_target_discovery_auth_cit */
1400
1401 /* Start functions for target_core_fabric_ops */
1402
1403 static char *iscsi_get_fabric_name(void)
1404 {
1405 return "iSCSI";
1406 }
1407
1408 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1409 {
1410 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1411
1412 return cmd->i_state;
1413 }
1414
1415 static u32 lio_sess_get_index(struct se_session *se_sess)
1416 {
1417 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1418
1419 return sess->session_index;
1420 }
1421
1422 static u32 lio_sess_get_initiator_sid(
1423 struct se_session *se_sess,
1424 unsigned char *buf,
1425 u32 size)
1426 {
1427 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1428 /*
1429 * iSCSI Initiator Session Identifier from RFC-3720.
1430 */
1431 return snprintf(buf, size, "%6phN", sess->isid);
1432 }
1433
1434 static int lio_queue_data_in(struct se_cmd *se_cmd)
1435 {
1436 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1437
1438 cmd->i_state = ISTATE_SEND_DATAIN;
1439 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1440
1441 return 0;
1442 }
1443
1444 static int lio_write_pending(struct se_cmd *se_cmd)
1445 {
1446 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1447 struct iscsi_conn *conn = cmd->conn;
1448
1449 if (!cmd->immediate_data && !cmd->unsolicited_data)
1450 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1451
1452 return 0;
1453 }
1454
1455 static int lio_write_pending_status(struct se_cmd *se_cmd)
1456 {
1457 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1458 int ret;
1459
1460 spin_lock_bh(&cmd->istate_lock);
1461 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1462 spin_unlock_bh(&cmd->istate_lock);
1463
1464 return ret;
1465 }
1466
1467 static int lio_queue_status(struct se_cmd *se_cmd)
1468 {
1469 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1470
1471 cmd->i_state = ISTATE_SEND_STATUS;
1472
1473 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1474 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1475 return 0;
1476 }
1477 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1478
1479 return 0;
1480 }
1481
1482 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1483 {
1484 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1485
1486 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1487 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1488 }
1489
1490 static void lio_aborted_task(struct se_cmd *se_cmd)
1491 {
1492 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1493
1494 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1495 }
1496
1497 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1498 {
1499 return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1500 }
1501
1502 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1503 {
1504 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1505 }
1506
1507 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1508 {
1509 return iscsi_tpg(se_tpg)->tpgt;
1510 }
1511
1512 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1513 {
1514 return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1515 }
1516
1517 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1518 {
1519 return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1520 }
1521
1522 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1523 {
1524 return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1525 }
1526
1527 static int lio_tpg_check_demo_mode_write_protect(
1528 struct se_portal_group *se_tpg)
1529 {
1530 return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1531 }
1532
1533 static int lio_tpg_check_prod_mode_write_protect(
1534 struct se_portal_group *se_tpg)
1535 {
1536 return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1537 }
1538
1539 static int lio_tpg_check_prot_fabric_only(
1540 struct se_portal_group *se_tpg)
1541 {
1542 /*
1543 * Only report fabric_prot_type if t10_pi has also been enabled
1544 * for incoming ib_isert sessions.
1545 */
1546 if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1547 return 0;
1548 return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1549 }
1550
1551 /*
1552 * This function calls iscsit_inc_session_usage_count() on the
1553 * struct iscsi_session in question.
1554 */
1555 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1556 {
1557 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1558 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
1559
1560 spin_lock_bh(&se_tpg->session_lock);
1561 spin_lock(&sess->conn_lock);
1562 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1563 atomic_read(&sess->session_logout) ||
1564 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1565 spin_unlock(&sess->conn_lock);
1566 spin_unlock_bh(&se_tpg->session_lock);
1567 return 0;
1568 }
1569 atomic_set(&sess->session_reinstatement, 1);
1570 spin_unlock(&sess->conn_lock);
1571
1572 iscsit_stop_time2retain_timer(sess);
1573 spin_unlock_bh(&se_tpg->session_lock);
1574
1575 iscsit_stop_session(sess, 1, 1);
1576 return 1;
1577 }
1578
1579 /*
1580 * Calls iscsit_dec_session_usage_count() as inverse of
1581 * lio_tpg_shutdown_session()
1582 */
1583 static void lio_tpg_close_session(struct se_session *se_sess)
1584 {
1585 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1586 /*
1587 * If the iSCSI Session for the iSCSI Initiator Node exists,
1588 * forcefully shutdown the iSCSI NEXUS.
1589 */
1590 iscsit_close_session(sess);
1591 }
1592
1593 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1594 {
1595 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1596 }
1597
1598 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1599 {
1600 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1601 se_node_acl);
1602 struct se_portal_group *se_tpg = se_acl->se_tpg;
1603 struct iscsi_portal_group *tpg = container_of(se_tpg,
1604 struct iscsi_portal_group, tpg_se_tpg);
1605
1606 acl->node_attrib.nacl = acl;
1607 iscsit_set_default_node_attribues(acl, tpg);
1608 }
1609
1610 static int lio_check_stop_free(struct se_cmd *se_cmd)
1611 {
1612 return target_put_sess_cmd(se_cmd);
1613 }
1614
1615 static void lio_release_cmd(struct se_cmd *se_cmd)
1616 {
1617 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1618
1619 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1620 iscsit_release_cmd(cmd);
1621 }
1622
1623 const struct target_core_fabric_ops iscsi_ops = {
1624 .module = THIS_MODULE,
1625 .name = "iscsi",
1626 .node_acl_size = sizeof(struct iscsi_node_acl),
1627 .get_fabric_name = iscsi_get_fabric_name,
1628 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,
1629 .tpg_get_tag = lio_tpg_get_tag,
1630 .tpg_get_default_depth = lio_tpg_get_default_depth,
1631 .tpg_check_demo_mode = lio_tpg_check_demo_mode,
1632 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
1633 .tpg_check_demo_mode_write_protect =
1634 lio_tpg_check_demo_mode_write_protect,
1635 .tpg_check_prod_mode_write_protect =
1636 lio_tpg_check_prod_mode_write_protect,
1637 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
1638 .tpg_get_inst_index = lio_tpg_get_inst_index,
1639 .check_stop_free = lio_check_stop_free,
1640 .release_cmd = lio_release_cmd,
1641 .shutdown_session = lio_tpg_shutdown_session,
1642 .close_session = lio_tpg_close_session,
1643 .sess_get_index = lio_sess_get_index,
1644 .sess_get_initiator_sid = lio_sess_get_initiator_sid,
1645 .write_pending = lio_write_pending,
1646 .write_pending_status = lio_write_pending_status,
1647 .set_default_node_attributes = lio_set_default_node_attributes,
1648 .get_cmd_state = iscsi_get_cmd_state,
1649 .queue_data_in = lio_queue_data_in,
1650 .queue_status = lio_queue_status,
1651 .queue_tm_rsp = lio_queue_tm_rsp,
1652 .aborted_task = lio_aborted_task,
1653 .fabric_make_wwn = lio_target_call_coreaddtiqn,
1654 .fabric_drop_wwn = lio_target_call_coredeltiqn,
1655 .fabric_make_tpg = lio_target_tiqn_addtpg,
1656 .fabric_drop_tpg = lio_target_tiqn_deltpg,
1657 .fabric_make_np = lio_target_call_addnptotpg,
1658 .fabric_drop_np = lio_target_call_delnpfromtpg,
1659 .fabric_init_nodeacl = lio_target_init_nodeacl,
1660
1661 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,
1662 .tfc_wwn_attrs = lio_target_wwn_attrs,
1663 .tfc_tpg_base_attrs = lio_target_tpg_attrs,
1664 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
1665 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
1666 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
1667 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,
1668 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
1669 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
1670 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
1671 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
1672 };
Linux kernel - Deliverables
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