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