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target: use per-attribute show and store methods
[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 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
730 */
731 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
732 config_item_name(acl_ci), cmdsn_depth, 1);
733
734 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
735 "InitiatorName: %s\n", config_item_name(wwn_ci),
736 config_item_name(tpg_ci), cmdsn_depth,
737 config_item_name(acl_ci));
738
739 iscsit_put_tpg(tpg);
740 return (!ret) ? count : (ssize_t)ret;
741 }
742
743 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
744 {
745 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
746 }
747
748 static ssize_t lio_target_nacl_tag_store(struct config_item *item,
749 const char *page, size_t count)
750 {
751 struct se_node_acl *se_nacl = acl_to_nacl(item);
752 int ret;
753
754 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
755
756 if (ret < 0)
757 return ret;
758 return count;
759 }
760
761 CONFIGFS_ATTR_RO(lio_target_nacl_, info);
762 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
763 CONFIGFS_ATTR(lio_target_nacl_, tag);
764
765 static struct configfs_attribute *lio_target_initiator_attrs[] = {
766 &lio_target_nacl_attr_info,
767 &lio_target_nacl_attr_cmdsn_depth,
768 &lio_target_nacl_attr_tag,
769 NULL,
770 };
771
772 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
773 const char *name)
774 {
775 struct iscsi_node_acl *acl =
776 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
777 struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
778
779 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
780 GFP_KERNEL);
781 if (!stats_cg->default_groups) {
782 pr_err("Unable to allocate memory for"
783 " stats_cg->default_groups\n");
784 return -ENOMEM;
785 }
786
787 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
788 stats_cg->default_groups[1] = NULL;
789 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
790 "iscsi_sess_stats", &iscsi_stat_sess_cit);
791
792 return 0;
793 }
794
795 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl)
796 {
797 struct iscsi_node_acl *acl = container_of(se_nacl,
798 struct iscsi_node_acl, se_node_acl);
799 struct config_item *df_item;
800 struct config_group *stats_cg;
801 int i;
802
803 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
804 for (i = 0; stats_cg->default_groups[i]; i++) {
805 df_item = &stats_cg->default_groups[i]->cg_item;
806 stats_cg->default_groups[i] = NULL;
807 config_item_put(df_item);
808 }
809 kfree(stats_cg->default_groups);
810 }
811
812 /* End items for lio_target_acl_cit */
813
814 /* Start items for lio_target_tpg_attrib_cit */
815
816 #define DEF_TPG_ATTRIB(name) \
817 \
818 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
819 char *page) \
820 { \
821 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
822 struct iscsi_portal_group *tpg = container_of(se_tpg, \
823 struct iscsi_portal_group, tpg_se_tpg); \
824 ssize_t rb; \
825 \
826 if (iscsit_get_tpg(tpg) < 0) \
827 return -EINVAL; \
828 \
829 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
830 iscsit_put_tpg(tpg); \
831 return rb; \
832 } \
833 \
834 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
835 const char *page, size_t count) \
836 { \
837 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
838 struct iscsi_portal_group *tpg = container_of(se_tpg, \
839 struct iscsi_portal_group, tpg_se_tpg); \
840 u32 val; \
841 int ret; \
842 \
843 if (iscsit_get_tpg(tpg) < 0) \
844 return -EINVAL; \
845 \
846 ret = kstrtou32(page, 0, &val); \
847 if (ret) \
848 goto out; \
849 ret = iscsit_ta_##name(tpg, val); \
850 if (ret < 0) \
851 goto out; \
852 \
853 iscsit_put_tpg(tpg); \
854 return count; \
855 out: \
856 iscsit_put_tpg(tpg); \
857 return ret; \
858 } \
859 CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
860
861 DEF_TPG_ATTRIB(authentication);
862 DEF_TPG_ATTRIB(login_timeout);
863 DEF_TPG_ATTRIB(netif_timeout);
864 DEF_TPG_ATTRIB(generate_node_acls);
865 DEF_TPG_ATTRIB(default_cmdsn_depth);
866 DEF_TPG_ATTRIB(cache_dynamic_acls);
867 DEF_TPG_ATTRIB(demo_mode_write_protect);
868 DEF_TPG_ATTRIB(prod_mode_write_protect);
869 DEF_TPG_ATTRIB(demo_mode_discovery);
870 DEF_TPG_ATTRIB(default_erl);
871 DEF_TPG_ATTRIB(t10_pi);
872 DEF_TPG_ATTRIB(fabric_prot_type);
873 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
874
875 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
876 &iscsi_tpg_attrib_attr_authentication,
877 &iscsi_tpg_attrib_attr_login_timeout,
878 &iscsi_tpg_attrib_attr_netif_timeout,
879 &iscsi_tpg_attrib_attr_generate_node_acls,
880 &iscsi_tpg_attrib_attr_default_cmdsn_depth,
881 &iscsi_tpg_attrib_attr_cache_dynamic_acls,
882 &iscsi_tpg_attrib_attr_demo_mode_write_protect,
883 &iscsi_tpg_attrib_attr_prod_mode_write_protect,
884 &iscsi_tpg_attrib_attr_demo_mode_discovery,
885 &iscsi_tpg_attrib_attr_default_erl,
886 &iscsi_tpg_attrib_attr_t10_pi,
887 &iscsi_tpg_attrib_attr_fabric_prot_type,
888 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
889 NULL,
890 };
891
892 /* End items for lio_target_tpg_attrib_cit */
893
894 /* Start items for lio_target_tpg_auth_cit */
895
896 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
897 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
898 char *page) \
899 { \
900 struct iscsi_portal_group *tpg = container_of(se_tpg, \
901 struct iscsi_portal_group, tpg_se_tpg); \
902 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
903 \
904 if (!capable(CAP_SYS_ADMIN)) \
905 return -EPERM; \
906 \
907 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
908 } \
909 \
910 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
911 const char *page, size_t count) \
912 { \
913 struct iscsi_portal_group *tpg = container_of(se_tpg, \
914 struct iscsi_portal_group, tpg_se_tpg); \
915 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
916 \
917 if (!capable(CAP_SYS_ADMIN)) \
918 return -EPERM; \
919 \
920 snprintf(auth->name, sizeof(auth->name), "%s", page); \
921 if (!(strncmp("NULL", auth->name, 4))) \
922 auth->naf_flags &= ~flags; \
923 else \
924 auth->naf_flags |= flags; \
925 \
926 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
927 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
928 auth->authenticate_target = 1; \
929 else \
930 auth->authenticate_target = 0; \
931 \
932 return count; \
933 }
934
935 #define DEF_TPG_AUTH_STR(name, flags) \
936 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
937 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
938 char *page) \
939 { \
940 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
941 } \
942 \
943 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \
944 const char *page, size_t count) \
945 { \
946 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
947 } \
948 \
949 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
950
951
952 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
953 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
954 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
955 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
956
957 #define __DEF_TPG_AUTH_INT(prefix, name) \
958 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
959 char *page) \
960 { \
961 struct iscsi_portal_group *tpg = container_of(se_tpg, \
962 struct iscsi_portal_group, tpg_se_tpg); \
963 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
964 \
965 if (!capable(CAP_SYS_ADMIN)) \
966 return -EPERM; \
967 \
968 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
969 }
970
971 #define DEF_TPG_AUTH_INT(name) \
972 __DEF_TPG_AUTH_INT(tpg_auth, name) \
973 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
974 char *page) \
975 { \
976 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
977 } \
978 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
979
980 DEF_TPG_AUTH_INT(authenticate_target);
981
982 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
983 &iscsi_tpg_auth_attr_userid,
984 &iscsi_tpg_auth_attr_password,
985 &iscsi_tpg_auth_attr_authenticate_target,
986 &iscsi_tpg_auth_attr_userid_mutual,
987 &iscsi_tpg_auth_attr_password_mutual,
988 NULL,
989 };
990
991 /* End items for lio_target_tpg_auth_cit */
992
993 /* Start items for lio_target_tpg_param_cit */
994
995 #define DEF_TPG_PARAM(name) \
996 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
997 char *page) \
998 { \
999 struct se_portal_group *se_tpg = param_to_tpg(item); \
1000 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1001 struct iscsi_portal_group, tpg_se_tpg); \
1002 struct iscsi_param *param; \
1003 ssize_t rb; \
1004 \
1005 if (iscsit_get_tpg(tpg) < 0) \
1006 return -EINVAL; \
1007 \
1008 param = iscsi_find_param_from_key(__stringify(name), \
1009 tpg->param_list); \
1010 if (!param) { \
1011 iscsit_put_tpg(tpg); \
1012 return -EINVAL; \
1013 } \
1014 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1015 \
1016 iscsit_put_tpg(tpg); \
1017 return rb; \
1018 } \
1019 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
1020 const char *page, size_t count) \
1021 { \
1022 struct se_portal_group *se_tpg = param_to_tpg(item); \
1023 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1024 struct iscsi_portal_group, tpg_se_tpg); \
1025 char *buf; \
1026 int ret, len; \
1027 \
1028 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1029 if (!buf) \
1030 return -ENOMEM; \
1031 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1032 if (isspace(buf[len-1])) \
1033 buf[len-1] = '\0'; /* Kill newline */ \
1034 \
1035 if (iscsit_get_tpg(tpg) < 0) { \
1036 kfree(buf); \
1037 return -EINVAL; \
1038 } \
1039 \
1040 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1041 if (ret < 0) \
1042 goto out; \
1043 \
1044 kfree(buf); \
1045 iscsit_put_tpg(tpg); \
1046 return count; \
1047 out: \
1048 kfree(buf); \
1049 iscsit_put_tpg(tpg); \
1050 return -EINVAL; \
1051 } \
1052 CONFIGFS_ATTR(iscsi_tpg_param_, name)
1053
1054 DEF_TPG_PARAM(AuthMethod);
1055 DEF_TPG_PARAM(HeaderDigest);
1056 DEF_TPG_PARAM(DataDigest);
1057 DEF_TPG_PARAM(MaxConnections);
1058 DEF_TPG_PARAM(TargetAlias);
1059 DEF_TPG_PARAM(InitialR2T);
1060 DEF_TPG_PARAM(ImmediateData);
1061 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1062 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1063 DEF_TPG_PARAM(MaxBurstLength);
1064 DEF_TPG_PARAM(FirstBurstLength);
1065 DEF_TPG_PARAM(DefaultTime2Wait);
1066 DEF_TPG_PARAM(DefaultTime2Retain);
1067 DEF_TPG_PARAM(MaxOutstandingR2T);
1068 DEF_TPG_PARAM(DataPDUInOrder);
1069 DEF_TPG_PARAM(DataSequenceInOrder);
1070 DEF_TPG_PARAM(ErrorRecoveryLevel);
1071 DEF_TPG_PARAM(IFMarker);
1072 DEF_TPG_PARAM(OFMarker);
1073 DEF_TPG_PARAM(IFMarkInt);
1074 DEF_TPG_PARAM(OFMarkInt);
1075
1076 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1077 &iscsi_tpg_param_attr_AuthMethod,
1078 &iscsi_tpg_param_attr_HeaderDigest,
1079 &iscsi_tpg_param_attr_DataDigest,
1080 &iscsi_tpg_param_attr_MaxConnections,
1081 &iscsi_tpg_param_attr_TargetAlias,
1082 &iscsi_tpg_param_attr_InitialR2T,
1083 &iscsi_tpg_param_attr_ImmediateData,
1084 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
1085 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
1086 &iscsi_tpg_param_attr_MaxBurstLength,
1087 &iscsi_tpg_param_attr_FirstBurstLength,
1088 &iscsi_tpg_param_attr_DefaultTime2Wait,
1089 &iscsi_tpg_param_attr_DefaultTime2Retain,
1090 &iscsi_tpg_param_attr_MaxOutstandingR2T,
1091 &iscsi_tpg_param_attr_DataPDUInOrder,
1092 &iscsi_tpg_param_attr_DataSequenceInOrder,
1093 &iscsi_tpg_param_attr_ErrorRecoveryLevel,
1094 &iscsi_tpg_param_attr_IFMarker,
1095 &iscsi_tpg_param_attr_OFMarker,
1096 &iscsi_tpg_param_attr_IFMarkInt,
1097 &iscsi_tpg_param_attr_OFMarkInt,
1098 NULL,
1099 };
1100
1101 /* End items for lio_target_tpg_param_cit */
1102
1103 /* Start items for lio_target_tpg_cit */
1104
1105 static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page)
1106 {
1107 struct se_portal_group *se_tpg = to_tpg(item);
1108 struct iscsi_portal_group *tpg = container_of(se_tpg,
1109 struct iscsi_portal_group, tpg_se_tpg);
1110 ssize_t len;
1111
1112 spin_lock(&tpg->tpg_state_lock);
1113 len = sprintf(page, "%d\n",
1114 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1115 spin_unlock(&tpg->tpg_state_lock);
1116
1117 return len;
1118 }
1119
1120 static ssize_t lio_target_tpg_enable_store(struct config_item *item,
1121 const char *page, size_t count)
1122 {
1123 struct se_portal_group *se_tpg = to_tpg(item);
1124 struct iscsi_portal_group *tpg = container_of(se_tpg,
1125 struct iscsi_portal_group, tpg_se_tpg);
1126 u32 op;
1127 int ret;
1128
1129 ret = kstrtou32(page, 0, &op);
1130 if (ret)
1131 return ret;
1132 if ((op != 1) && (op != 0)) {
1133 pr_err("Illegal value for tpg_enable: %u\n", op);
1134 return -EINVAL;
1135 }
1136
1137 ret = iscsit_get_tpg(tpg);
1138 if (ret < 0)
1139 return -EINVAL;
1140
1141 if (op) {
1142 ret = iscsit_tpg_enable_portal_group(tpg);
1143 if (ret < 0)
1144 goto out;
1145 } else {
1146 /*
1147 * iscsit_tpg_disable_portal_group() assumes force=1
1148 */
1149 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1150 if (ret < 0)
1151 goto out;
1152 }
1153
1154 iscsit_put_tpg(tpg);
1155 return count;
1156 out:
1157 iscsit_put_tpg(tpg);
1158 return -EINVAL;
1159 }
1160
1161
1162 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1163 char *page)
1164 {
1165 return target_show_dynamic_sessions(to_tpg(item), page);
1166 }
1167
1168 CONFIGFS_ATTR(lio_target_tpg_, enable);
1169 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1170
1171 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1172 &lio_target_tpg_attr_enable,
1173 &lio_target_tpg_attr_dynamic_sessions,
1174 NULL,
1175 };
1176
1177 /* End items for lio_target_tpg_cit */
1178
1179 /* Start items for lio_target_tiqn_cit */
1180
1181 static struct se_portal_group *lio_target_tiqn_addtpg(
1182 struct se_wwn *wwn,
1183 struct config_group *group,
1184 const char *name)
1185 {
1186 struct iscsi_portal_group *tpg;
1187 struct iscsi_tiqn *tiqn;
1188 char *tpgt_str;
1189 int ret;
1190 u16 tpgt;
1191
1192 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1193 /*
1194 * Only tpgt_# directory groups can be created below
1195 * target/iscsi/iqn.superturodiskarry/
1196 */
1197 tpgt_str = strstr(name, "tpgt_");
1198 if (!tpgt_str) {
1199 pr_err("Unable to locate \"tpgt_#\" directory"
1200 " group\n");
1201 return NULL;
1202 }
1203 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1204 ret = kstrtou16(tpgt_str, 0, &tpgt);
1205 if (ret)
1206 return NULL;
1207
1208 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1209 if (!tpg)
1210 return NULL;
1211
1212 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1213 if (ret < 0)
1214 return NULL;
1215
1216 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1217 if (ret != 0)
1218 goto out;
1219
1220 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1221 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1222 name);
1223 return &tpg->tpg_se_tpg;
1224 out:
1225 core_tpg_deregister(&tpg->tpg_se_tpg);
1226 kfree(tpg);
1227 return NULL;
1228 }
1229
1230 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1231 {
1232 struct iscsi_portal_group *tpg;
1233 struct iscsi_tiqn *tiqn;
1234
1235 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1236 tiqn = tpg->tpg_tiqn;
1237 /*
1238 * iscsit_tpg_del_portal_group() assumes force=1
1239 */
1240 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1241 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1242 }
1243
1244 /* End items for lio_target_tiqn_cit */
1245
1246 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1247
1248 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1249 char *page)
1250 {
1251 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1252 }
1253
1254 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1255
1256 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1257 &lio_target_wwn_attr_lio_version,
1258 NULL,
1259 };
1260
1261 static struct se_wwn *lio_target_call_coreaddtiqn(
1262 struct target_fabric_configfs *tf,
1263 struct config_group *group,
1264 const char *name)
1265 {
1266 struct config_group *stats_cg;
1267 struct iscsi_tiqn *tiqn;
1268
1269 tiqn = iscsit_add_tiqn((unsigned char *)name);
1270 if (IS_ERR(tiqn))
1271 return ERR_CAST(tiqn);
1272 /*
1273 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1274 */
1275 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1276
1277 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1278 GFP_KERNEL);
1279 if (!stats_cg->default_groups) {
1280 pr_err("Unable to allocate memory for"
1281 " stats_cg->default_groups\n");
1282 iscsit_del_tiqn(tiqn);
1283 return ERR_PTR(-ENOMEM);
1284 }
1285
1286 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1287 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1288 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1289 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1290 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1291 stats_cg->default_groups[5] = NULL;
1292 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1293 "iscsi_instance", &iscsi_stat_instance_cit);
1294 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1295 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1296 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1297 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1298 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1299 "iscsi_login_stats", &iscsi_stat_login_cit);
1300 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1301 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1302
1303 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1304 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1305 " %s\n", name);
1306 return &tiqn->tiqn_wwn;
1307 }
1308
1309 static void lio_target_call_coredeltiqn(
1310 struct se_wwn *wwn)
1311 {
1312 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1313 struct config_item *df_item;
1314 struct config_group *stats_cg;
1315 int i;
1316
1317 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1318 for (i = 0; stats_cg->default_groups[i]; i++) {
1319 df_item = &stats_cg->default_groups[i]->cg_item;
1320 stats_cg->default_groups[i] = NULL;
1321 config_item_put(df_item);
1322 }
1323 kfree(stats_cg->default_groups);
1324
1325 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1326 tiqn->tiqn);
1327 iscsit_del_tiqn(tiqn);
1328 }
1329
1330 /* End LIO-Target TIQN struct contig_lio_target_cit */
1331
1332 /* Start lio_target_discovery_auth_cit */
1333
1334 #define DEF_DISC_AUTH_STR(name, flags) \
1335 __DEF_NACL_AUTH_STR(disc, name, flags) \
1336 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1337 { \
1338 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1339 page); \
1340 } \
1341 static ssize_t iscsi_disc_##name##_store(struct config_item *item, \
1342 const char *page, size_t count) \
1343 { \
1344 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \
1345 page, count); \
1346 \
1347 } \
1348 CONFIGFS_ATTR(iscsi_disc_, name)
1349
1350 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1351 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1352 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1353 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1354
1355 #define DEF_DISC_AUTH_INT(name) \
1356 __DEF_NACL_AUTH_INT(disc, name) \
1357 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1358 { \
1359 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1360 page); \
1361 } \
1362 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1363
1364 DEF_DISC_AUTH_INT(authenticate_target);
1365
1366
1367 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1368 char *page)
1369 {
1370 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1371
1372 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1373 }
1374
1375 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1376 const char *page, size_t count)
1377 {
1378 struct iscsi_param *param;
1379 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1380 u32 op;
1381 int err;
1382
1383 err = kstrtou32(page, 0, &op);
1384 if (err)
1385 return -EINVAL;
1386 if ((op != 1) && (op != 0)) {
1387 pr_err("Illegal value for enforce_discovery_auth:"
1388 " %u\n", op);
1389 return -EINVAL;
1390 }
1391
1392 if (!discovery_tpg) {
1393 pr_err("iscsit_global->discovery_tpg is NULL\n");
1394 return -EINVAL;
1395 }
1396
1397 param = iscsi_find_param_from_key(AUTHMETHOD,
1398 discovery_tpg->param_list);
1399 if (!param)
1400 return -EINVAL;
1401
1402 if (op) {
1403 /*
1404 * Reset the AuthMethod key to CHAP.
1405 */
1406 if (iscsi_update_param_value(param, CHAP) < 0)
1407 return -EINVAL;
1408
1409 discovery_tpg->tpg_attrib.authentication = 1;
1410 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1411 pr_debug("LIO-CORE[0] Successfully enabled"
1412 " authentication enforcement for iSCSI"
1413 " Discovery TPG\n");
1414 } else {
1415 /*
1416 * Reset the AuthMethod key to CHAP,None
1417 */
1418 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1419 return -EINVAL;
1420
1421 discovery_tpg->tpg_attrib.authentication = 0;
1422 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1423 pr_debug("LIO-CORE[0] Successfully disabled"
1424 " authentication enforcement for iSCSI"
1425 " Discovery TPG\n");
1426 }
1427
1428 return count;
1429 }
1430
1431 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1432
1433 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1434 &iscsi_disc_attr_userid,
1435 &iscsi_disc_attr_password,
1436 &iscsi_disc_attr_authenticate_target,
1437 &iscsi_disc_attr_userid_mutual,
1438 &iscsi_disc_attr_password_mutual,
1439 &iscsi_disc_attr_enforce_discovery_auth,
1440 NULL,
1441 };
1442
1443 /* End lio_target_discovery_auth_cit */
1444
1445 /* Start functions for target_core_fabric_ops */
1446
1447 static char *iscsi_get_fabric_name(void)
1448 {
1449 return "iSCSI";
1450 }
1451
1452 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1453 {
1454 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1455
1456 return cmd->i_state;
1457 }
1458
1459 static u32 lio_sess_get_index(struct se_session *se_sess)
1460 {
1461 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1462
1463 return sess->session_index;
1464 }
1465
1466 static u32 lio_sess_get_initiator_sid(
1467 struct se_session *se_sess,
1468 unsigned char *buf,
1469 u32 size)
1470 {
1471 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1472 /*
1473 * iSCSI Initiator Session Identifier from RFC-3720.
1474 */
1475 return snprintf(buf, size, "%6phN", sess->isid);
1476 }
1477
1478 static int lio_queue_data_in(struct se_cmd *se_cmd)
1479 {
1480 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1481
1482 cmd->i_state = ISTATE_SEND_DATAIN;
1483 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1484
1485 return 0;
1486 }
1487
1488 static int lio_write_pending(struct se_cmd *se_cmd)
1489 {
1490 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1491 struct iscsi_conn *conn = cmd->conn;
1492
1493 if (!cmd->immediate_data && !cmd->unsolicited_data)
1494 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1495
1496 return 0;
1497 }
1498
1499 static int lio_write_pending_status(struct se_cmd *se_cmd)
1500 {
1501 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1502 int ret;
1503
1504 spin_lock_bh(&cmd->istate_lock);
1505 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1506 spin_unlock_bh(&cmd->istate_lock);
1507
1508 return ret;
1509 }
1510
1511 static int lio_queue_status(struct se_cmd *se_cmd)
1512 {
1513 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1514
1515 cmd->i_state = ISTATE_SEND_STATUS;
1516
1517 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1518 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1519 return 0;
1520 }
1521 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1522
1523 return 0;
1524 }
1525
1526 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1527 {
1528 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1529
1530 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1531 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1532 }
1533
1534 static void lio_aborted_task(struct se_cmd *se_cmd)
1535 {
1536 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1537
1538 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1539 }
1540
1541 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1542 {
1543 return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1544 }
1545
1546 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1547 {
1548 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1549 }
1550
1551 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1552 {
1553 return iscsi_tpg(se_tpg)->tpgt;
1554 }
1555
1556 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1557 {
1558 return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1559 }
1560
1561 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1562 {
1563 return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1564 }
1565
1566 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1567 {
1568 return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1569 }
1570
1571 static int lio_tpg_check_demo_mode_write_protect(
1572 struct se_portal_group *se_tpg)
1573 {
1574 return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1575 }
1576
1577 static int lio_tpg_check_prod_mode_write_protect(
1578 struct se_portal_group *se_tpg)
1579 {
1580 return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1581 }
1582
1583 static int lio_tpg_check_prot_fabric_only(
1584 struct se_portal_group *se_tpg)
1585 {
1586 /*
1587 * Only report fabric_prot_type if t10_pi has also been enabled
1588 * for incoming ib_isert sessions.
1589 */
1590 if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1591 return 0;
1592 return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1593 }
1594
1595 /*
1596 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1597 *
1598 * Also, this function calls iscsit_inc_session_usage_count() on the
1599 * struct iscsi_session in question.
1600 */
1601 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1602 {
1603 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1604
1605 spin_lock(&sess->conn_lock);
1606 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1607 atomic_read(&sess->session_logout) ||
1608 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1609 spin_unlock(&sess->conn_lock);
1610 return 0;
1611 }
1612 atomic_set(&sess->session_reinstatement, 1);
1613 spin_unlock(&sess->conn_lock);
1614
1615 iscsit_stop_time2retain_timer(sess);
1616 iscsit_stop_session(sess, 1, 1);
1617
1618 return 1;
1619 }
1620
1621 /*
1622 * Calls iscsit_dec_session_usage_count() as inverse of
1623 * lio_tpg_shutdown_session()
1624 */
1625 static void lio_tpg_close_session(struct se_session *se_sess)
1626 {
1627 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1628 /*
1629 * If the iSCSI Session for the iSCSI Initiator Node exists,
1630 * forcefully shutdown the iSCSI NEXUS.
1631 */
1632 iscsit_close_session(sess);
1633 }
1634
1635 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1636 {
1637 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1638 }
1639
1640 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1641 {
1642 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1643 se_node_acl);
1644 struct se_portal_group *se_tpg = se_acl->se_tpg;
1645 struct iscsi_portal_group *tpg = container_of(se_tpg,
1646 struct iscsi_portal_group, tpg_se_tpg);
1647
1648 acl->node_attrib.nacl = acl;
1649 iscsit_set_default_node_attribues(acl, tpg);
1650 }
1651
1652 static int lio_check_stop_free(struct se_cmd *se_cmd)
1653 {
1654 return target_put_sess_cmd(se_cmd);
1655 }
1656
1657 static void lio_release_cmd(struct se_cmd *se_cmd)
1658 {
1659 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1660
1661 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1662 iscsit_release_cmd(cmd);
1663 }
1664
1665 const struct target_core_fabric_ops iscsi_ops = {
1666 .module = THIS_MODULE,
1667 .name = "iscsi",
1668 .node_acl_size = sizeof(struct iscsi_node_acl),
1669 .get_fabric_name = iscsi_get_fabric_name,
1670 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,
1671 .tpg_get_tag = lio_tpg_get_tag,
1672 .tpg_get_default_depth = lio_tpg_get_default_depth,
1673 .tpg_check_demo_mode = lio_tpg_check_demo_mode,
1674 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
1675 .tpg_check_demo_mode_write_protect =
1676 lio_tpg_check_demo_mode_write_protect,
1677 .tpg_check_prod_mode_write_protect =
1678 lio_tpg_check_prod_mode_write_protect,
1679 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
1680 .tpg_get_inst_index = lio_tpg_get_inst_index,
1681 .check_stop_free = lio_check_stop_free,
1682 .release_cmd = lio_release_cmd,
1683 .shutdown_session = lio_tpg_shutdown_session,
1684 .close_session = lio_tpg_close_session,
1685 .sess_get_index = lio_sess_get_index,
1686 .sess_get_initiator_sid = lio_sess_get_initiator_sid,
1687 .write_pending = lio_write_pending,
1688 .write_pending_status = lio_write_pending_status,
1689 .set_default_node_attributes = lio_set_default_node_attributes,
1690 .get_cmd_state = iscsi_get_cmd_state,
1691 .queue_data_in = lio_queue_data_in,
1692 .queue_status = lio_queue_status,
1693 .queue_tm_rsp = lio_queue_tm_rsp,
1694 .aborted_task = lio_aborted_task,
1695 .fabric_make_wwn = lio_target_call_coreaddtiqn,
1696 .fabric_drop_wwn = lio_target_call_coredeltiqn,
1697 .fabric_make_tpg = lio_target_tiqn_addtpg,
1698 .fabric_drop_tpg = lio_target_tiqn_deltpg,
1699 .fabric_make_np = lio_target_call_addnptotpg,
1700 .fabric_drop_np = lio_target_call_delnpfromtpg,
1701 .fabric_init_nodeacl = lio_target_init_nodeacl,
1702 .fabric_cleanup_nodeacl = lio_target_cleanup_nodeacl,
1703
1704 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,
1705 .tfc_wwn_attrs = lio_target_wwn_attrs,
1706 .tfc_tpg_base_attrs = lio_target_tpg_attrs,
1707 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
1708 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
1709 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
1710 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,
1711 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
1712 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
1713 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
1714 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
1715 };
Linux kernel - Deliverables
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