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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/target_core_fabric_configfs.h>
27 #include <target/target_core_configfs.h>
28 #include <target/configfs_macros.h>
29 #include <target/iscsi/iscsi_transport.h>
30
31 #include <target/iscsi/iscsi_target_core.h>
32 #include "iscsi_target_parameters.h"
33 #include "iscsi_target_device.h"
34 #include "iscsi_target_erl0.h"
35 #include "iscsi_target_nodeattrib.h"
36 #include "iscsi_target_tpg.h"
37 #include "iscsi_target_util.h"
38 #include "iscsi_target.h"
39 #include <target/iscsi/iscsi_target_stat.h>
40
41 struct lio_target_configfs_attribute {
42 struct configfs_attribute attr;
43 ssize_t (*show)(void *, char *);
44 ssize_t (*store)(void *, const char *, size_t);
45 };
46
47 /* Start items for lio_target_portal_cit */
48
49 static ssize_t lio_target_np_show_sctp(
50 struct se_tpg_np *se_tpg_np,
51 char *page)
52 {
53 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
54 struct iscsi_tpg_np, se_tpg_np);
55 struct iscsi_tpg_np *tpg_np_sctp;
56 ssize_t rb;
57
58 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
59 if (tpg_np_sctp)
60 rb = sprintf(page, "1\n");
61 else
62 rb = sprintf(page, "0\n");
63
64 return rb;
65 }
66
67 static ssize_t lio_target_np_store_sctp(
68 struct se_tpg_np *se_tpg_np,
69 const char *page,
70 size_t count)
71 {
72 struct iscsi_np *np;
73 struct iscsi_portal_group *tpg;
74 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
75 struct iscsi_tpg_np, se_tpg_np);
76 struct iscsi_tpg_np *tpg_np_sctp = NULL;
77 u32 op;
78 int ret;
79
80 ret = kstrtou32(page, 0, &op);
81 if (ret)
82 return ret;
83 if ((op != 1) && (op != 0)) {
84 pr_err("Illegal value for tpg_enable: %u\n", op);
85 return -EINVAL;
86 }
87 np = tpg_np->tpg_np;
88 if (!np) {
89 pr_err("Unable to locate struct iscsi_np from"
90 " struct iscsi_tpg_np\n");
91 return -EINVAL;
92 }
93
94 tpg = tpg_np->tpg;
95 if (iscsit_get_tpg(tpg) < 0)
96 return -EINVAL;
97
98 if (op) {
99 /*
100 * Use existing np->np_sockaddr for SCTP network portal reference
101 */
102 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
103 np->np_ip, tpg_np, ISCSI_SCTP_TCP);
104 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
105 goto out;
106 } else {
107 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
108 if (!tpg_np_sctp)
109 goto out;
110
111 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
112 if (ret < 0)
113 goto out;
114 }
115
116 iscsit_put_tpg(tpg);
117 return count;
118 out:
119 iscsit_put_tpg(tpg);
120 return -EINVAL;
121 }
122
123 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
124
125 static ssize_t lio_target_np_show_iser(
126 struct se_tpg_np *se_tpg_np,
127 char *page)
128 {
129 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
130 struct iscsi_tpg_np, se_tpg_np);
131 struct iscsi_tpg_np *tpg_np_iser;
132 ssize_t rb;
133
134 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
135 if (tpg_np_iser)
136 rb = sprintf(page, "1\n");
137 else
138 rb = sprintf(page, "0\n");
139
140 return rb;
141 }
142
143 static ssize_t lio_target_np_store_iser(
144 struct se_tpg_np *se_tpg_np,
145 const char *page,
146 size_t count)
147 {
148 struct iscsi_np *np;
149 struct iscsi_portal_group *tpg;
150 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
151 struct iscsi_tpg_np, se_tpg_np);
152 struct iscsi_tpg_np *tpg_np_iser = NULL;
153 char *endptr;
154 u32 op;
155 int rc = 0;
156
157 op = simple_strtoul(page, &endptr, 0);
158 if ((op != 1) && (op != 0)) {
159 pr_err("Illegal value for tpg_enable: %u\n", op);
160 return -EINVAL;
161 }
162 np = tpg_np->tpg_np;
163 if (!np) {
164 pr_err("Unable to locate struct iscsi_np from"
165 " struct iscsi_tpg_np\n");
166 return -EINVAL;
167 }
168
169 tpg = tpg_np->tpg;
170 if (iscsit_get_tpg(tpg) < 0)
171 return -EINVAL;
172
173 if (op) {
174 rc = request_module("ib_isert");
175 if (rc != 0) {
176 pr_warn("Unable to request_module for ib_isert\n");
177 rc = 0;
178 }
179
180 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
181 np->np_ip, tpg_np, ISCSI_INFINIBAND);
182 if (IS_ERR(tpg_np_iser)) {
183 rc = PTR_ERR(tpg_np_iser);
184 goto out;
185 }
186 } else {
187 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
188 if (tpg_np_iser) {
189 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
190 if (rc < 0)
191 goto out;
192 }
193 }
194
195 iscsit_put_tpg(tpg);
196 return count;
197 out:
198 iscsit_put_tpg(tpg);
199 return rc;
200 }
201
202 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
203
204 static struct configfs_attribute *lio_target_portal_attrs[] = {
205 &lio_target_np_sctp.attr,
206 &lio_target_np_iser.attr,
207 NULL,
208 };
209
210 /* Stop items for lio_target_portal_cit */
211
212 /* Start items for lio_target_np_cit */
213
214 #define MAX_PORTAL_LEN 256
215
216 static struct se_tpg_np *lio_target_call_addnptotpg(
217 struct se_portal_group *se_tpg,
218 struct config_group *group,
219 const char *name)
220 {
221 struct iscsi_portal_group *tpg;
222 struct iscsi_tpg_np *tpg_np;
223 char *str, *str2, *ip_str, *port_str;
224 struct __kernel_sockaddr_storage sockaddr;
225 struct sockaddr_in *sock_in;
226 struct sockaddr_in6 *sock_in6;
227 unsigned long port;
228 int ret;
229 char buf[MAX_PORTAL_LEN + 1];
230
231 if (strlen(name) > MAX_PORTAL_LEN) {
232 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
233 (int)strlen(name), MAX_PORTAL_LEN);
234 return ERR_PTR(-EOVERFLOW);
235 }
236 memset(buf, 0, MAX_PORTAL_LEN + 1);
237 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
238
239 memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
240
241 str = strstr(buf, "[");
242 if (str) {
243 const char *end;
244
245 str2 = strstr(str, "]");
246 if (!str2) {
247 pr_err("Unable to locate trailing \"]\""
248 " in IPv6 iSCSI network portal address\n");
249 return ERR_PTR(-EINVAL);
250 }
251 str++; /* Skip over leading "[" */
252 *str2 = '\0'; /* Terminate the IPv6 address */
253 str2++; /* Skip over the "]" */
254 port_str = strstr(str2, ":");
255 if (!port_str) {
256 pr_err("Unable to locate \":port\""
257 " in IPv6 iSCSI network portal address\n");
258 return ERR_PTR(-EINVAL);
259 }
260 *port_str = '\0'; /* Terminate string for IP */
261 port_str++; /* Skip over ":" */
262
263 ret = kstrtoul(port_str, 0, &port);
264 if (ret < 0) {
265 pr_err("kstrtoul() failed for port_str: %d\n", ret);
266 return ERR_PTR(ret);
267 }
268 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
269 sock_in6->sin6_family = AF_INET6;
270 sock_in6->sin6_port = htons((unsigned short)port);
271 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
272 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
273 if (ret <= 0) {
274 pr_err("in6_pton returned: %d\n", ret);
275 return ERR_PTR(-EINVAL);
276 }
277 } else {
278 str = ip_str = &buf[0];
279 port_str = strstr(ip_str, ":");
280 if (!port_str) {
281 pr_err("Unable to locate \":port\""
282 " in IPv4 iSCSI network portal address\n");
283 return ERR_PTR(-EINVAL);
284 }
285 *port_str = '\0'; /* Terminate string for IP */
286 port_str++; /* Skip over ":" */
287
288 ret = kstrtoul(port_str, 0, &port);
289 if (ret < 0) {
290 pr_err("kstrtoul() failed for port_str: %d\n", ret);
291 return ERR_PTR(ret);
292 }
293 sock_in = (struct sockaddr_in *)&sockaddr;
294 sock_in->sin_family = AF_INET;
295 sock_in->sin_port = htons((unsigned short)port);
296 sock_in->sin_addr.s_addr = in_aton(ip_str);
297 }
298 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
299 ret = iscsit_get_tpg(tpg);
300 if (ret < 0)
301 return ERR_PTR(-EINVAL);
302
303 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
304 " PORTAL: %s\n",
305 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
306 tpg->tpgt, name);
307 /*
308 * Assume ISCSI_TCP by default. Other network portals for other
309 * iSCSI fabrics:
310 *
311 * Traditional iSCSI over SCTP (initial support)
312 * iSER/TCP (TODO, hardware available)
313 * iSER/SCTP (TODO, software emulation with osc-iwarp)
314 * iSER/IB (TODO, hardware available)
315 *
316 * can be enabled with attributes under
317 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
318 *
319 */
320 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
321 ISCSI_TCP);
322 if (IS_ERR(tpg_np)) {
323 iscsit_put_tpg(tpg);
324 return ERR_CAST(tpg_np);
325 }
326 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
327
328 iscsit_put_tpg(tpg);
329 return &tpg_np->se_tpg_np;
330 }
331
332 static void lio_target_call_delnpfromtpg(
333 struct se_tpg_np *se_tpg_np)
334 {
335 struct iscsi_portal_group *tpg;
336 struct iscsi_tpg_np *tpg_np;
337 struct se_portal_group *se_tpg;
338 int ret;
339
340 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
341 tpg = tpg_np->tpg;
342 ret = iscsit_get_tpg(tpg);
343 if (ret < 0)
344 return;
345
346 se_tpg = &tpg->tpg_se_tpg;
347 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
348 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
349 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
350
351 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
352 if (ret < 0)
353 goto out;
354
355 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
356 out:
357 iscsit_put_tpg(tpg);
358 }
359
360 /* End items for lio_target_np_cit */
361
362 /* Start items for lio_target_nacl_attrib_cit */
363
364 #define DEF_NACL_ATTRIB(name) \
365 static ssize_t iscsi_nacl_attrib_show_##name( \
366 struct se_node_acl *se_nacl, \
367 char *page) \
368 { \
369 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
370 se_node_acl); \
371 \
372 return sprintf(page, "%u\n", nacl->node_attrib.name); \
373 } \
374 \
375 static ssize_t iscsi_nacl_attrib_store_##name( \
376 struct se_node_acl *se_nacl, \
377 const char *page, \
378 size_t count) \
379 { \
380 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
381 se_node_acl); \
382 u32 val; \
383 int ret; \
384 \
385 ret = kstrtou32(page, 0, &val); \
386 if (ret) \
387 return ret; \
388 ret = iscsit_na_##name(nacl, val); \
389 if (ret < 0) \
390 return ret; \
391 \
392 return count; \
393 }
394
395 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
396 /*
397 * Define iscsi_node_attrib_s_dataout_timeout
398 */
399 DEF_NACL_ATTRIB(dataout_timeout);
400 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
401 /*
402 * Define iscsi_node_attrib_s_dataout_timeout_retries
403 */
404 DEF_NACL_ATTRIB(dataout_timeout_retries);
405 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
406 /*
407 * Define iscsi_node_attrib_s_default_erl
408 */
409 DEF_NACL_ATTRIB(default_erl);
410 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
411 /*
412 * Define iscsi_node_attrib_s_nopin_timeout
413 */
414 DEF_NACL_ATTRIB(nopin_timeout);
415 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
416 /*
417 * Define iscsi_node_attrib_s_nopin_response_timeout
418 */
419 DEF_NACL_ATTRIB(nopin_response_timeout);
420 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
421 /*
422 * Define iscsi_node_attrib_s_random_datain_pdu_offsets
423 */
424 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
425 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
426 /*
427 * Define iscsi_node_attrib_s_random_datain_seq_offsets
428 */
429 DEF_NACL_ATTRIB(random_datain_seq_offsets);
430 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
431 /*
432 * Define iscsi_node_attrib_s_random_r2t_offsets
433 */
434 DEF_NACL_ATTRIB(random_r2t_offsets);
435 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
436
437 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
438 &iscsi_nacl_attrib_dataout_timeout.attr,
439 &iscsi_nacl_attrib_dataout_timeout_retries.attr,
440 &iscsi_nacl_attrib_default_erl.attr,
441 &iscsi_nacl_attrib_nopin_timeout.attr,
442 &iscsi_nacl_attrib_nopin_response_timeout.attr,
443 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
444 &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
445 &iscsi_nacl_attrib_random_r2t_offsets.attr,
446 NULL,
447 };
448
449 /* End items for lio_target_nacl_attrib_cit */
450
451 /* Start items for lio_target_nacl_auth_cit */
452
453 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \
454 static ssize_t __iscsi_##prefix##_show_##name( \
455 struct iscsi_node_acl *nacl, \
456 char *page) \
457 { \
458 struct iscsi_node_auth *auth = &nacl->node_auth; \
459 \
460 if (!capable(CAP_SYS_ADMIN)) \
461 return -EPERM; \
462 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
463 } \
464 \
465 static ssize_t __iscsi_##prefix##_store_##name( \
466 struct iscsi_node_acl *nacl, \
467 const char *page, \
468 size_t count) \
469 { \
470 struct iscsi_node_auth *auth = &nacl->node_auth; \
471 \
472 if (!capable(CAP_SYS_ADMIN)) \
473 return -EPERM; \
474 if (count >= sizeof(auth->name)) \
475 return -EINVAL; \
476 snprintf(auth->name, sizeof(auth->name), "%s", page); \
477 if (!strncmp("NULL", auth->name, 4)) \
478 auth->naf_flags &= ~flags; \
479 else \
480 auth->naf_flags |= flags; \
481 \
482 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
483 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
484 auth->authenticate_target = 1; \
485 else \
486 auth->authenticate_target = 0; \
487 \
488 return count; \
489 }
490
491 #define __DEF_NACL_AUTH_INT(prefix, name) \
492 static ssize_t __iscsi_##prefix##_show_##name( \
493 struct iscsi_node_acl *nacl, \
494 char *page) \
495 { \
496 struct iscsi_node_auth *auth = &nacl->node_auth; \
497 \
498 if (!capable(CAP_SYS_ADMIN)) \
499 return -EPERM; \
500 \
501 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
502 }
503
504 #define DEF_NACL_AUTH_STR(name, flags) \
505 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
506 static ssize_t iscsi_nacl_auth_show_##name( \
507 struct se_node_acl *nacl, \
508 char *page) \
509 { \
510 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
511 struct iscsi_node_acl, se_node_acl), page); \
512 } \
513 static ssize_t iscsi_nacl_auth_store_##name( \
514 struct se_node_acl *nacl, \
515 const char *page, \
516 size_t count) \
517 { \
518 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
519 struct iscsi_node_acl, se_node_acl), page, count); \
520 }
521
522 #define DEF_NACL_AUTH_INT(name) \
523 __DEF_NACL_AUTH_INT(nacl_auth, name) \
524 static ssize_t iscsi_nacl_auth_show_##name( \
525 struct se_node_acl *nacl, \
526 char *page) \
527 { \
528 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
529 struct iscsi_node_acl, se_node_acl), page); \
530 }
531
532 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
533 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
534
535 /*
536 * One-way authentication userid
537 */
538 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
539 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
540 /*
541 * One-way authentication password
542 */
543 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
544 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
545 /*
546 * Enforce mutual authentication
547 */
548 DEF_NACL_AUTH_INT(authenticate_target);
549 AUTH_ATTR_RO(authenticate_target);
550 /*
551 * Mutual authentication userid
552 */
553 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
554 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
555 /*
556 * Mutual authentication password
557 */
558 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
559 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
560
561 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
562 &iscsi_nacl_auth_userid.attr,
563 &iscsi_nacl_auth_password.attr,
564 &iscsi_nacl_auth_authenticate_target.attr,
565 &iscsi_nacl_auth_userid_mutual.attr,
566 &iscsi_nacl_auth_password_mutual.attr,
567 NULL,
568 };
569
570 /* End items for lio_target_nacl_auth_cit */
571
572 /* Start items for lio_target_nacl_param_cit */
573
574 #define DEF_NACL_PARAM(name) \
575 static ssize_t iscsi_nacl_param_show_##name( \
576 struct se_node_acl *se_nacl, \
577 char *page) \
578 { \
579 struct iscsi_session *sess; \
580 struct se_session *se_sess; \
581 ssize_t rb; \
582 \
583 spin_lock_bh(&se_nacl->nacl_sess_lock); \
584 se_sess = se_nacl->nacl_sess; \
585 if (!se_sess) { \
586 rb = snprintf(page, PAGE_SIZE, \
587 "No Active iSCSI Session\n"); \
588 } else { \
589 sess = se_sess->fabric_sess_ptr; \
590 rb = snprintf(page, PAGE_SIZE, "%u\n", \
591 (u32)sess->sess_ops->name); \
592 } \
593 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
594 \
595 return rb; \
596 }
597
598 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
599
600 DEF_NACL_PARAM(MaxConnections);
601 NACL_PARAM_ATTR(MaxConnections);
602
603 DEF_NACL_PARAM(InitialR2T);
604 NACL_PARAM_ATTR(InitialR2T);
605
606 DEF_NACL_PARAM(ImmediateData);
607 NACL_PARAM_ATTR(ImmediateData);
608
609 DEF_NACL_PARAM(MaxBurstLength);
610 NACL_PARAM_ATTR(MaxBurstLength);
611
612 DEF_NACL_PARAM(FirstBurstLength);
613 NACL_PARAM_ATTR(FirstBurstLength);
614
615 DEF_NACL_PARAM(DefaultTime2Wait);
616 NACL_PARAM_ATTR(DefaultTime2Wait);
617
618 DEF_NACL_PARAM(DefaultTime2Retain);
619 NACL_PARAM_ATTR(DefaultTime2Retain);
620
621 DEF_NACL_PARAM(MaxOutstandingR2T);
622 NACL_PARAM_ATTR(MaxOutstandingR2T);
623
624 DEF_NACL_PARAM(DataPDUInOrder);
625 NACL_PARAM_ATTR(DataPDUInOrder);
626
627 DEF_NACL_PARAM(DataSequenceInOrder);
628 NACL_PARAM_ATTR(DataSequenceInOrder);
629
630 DEF_NACL_PARAM(ErrorRecoveryLevel);
631 NACL_PARAM_ATTR(ErrorRecoveryLevel);
632
633 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
634 &iscsi_nacl_param_MaxConnections.attr,
635 &iscsi_nacl_param_InitialR2T.attr,
636 &iscsi_nacl_param_ImmediateData.attr,
637 &iscsi_nacl_param_MaxBurstLength.attr,
638 &iscsi_nacl_param_FirstBurstLength.attr,
639 &iscsi_nacl_param_DefaultTime2Wait.attr,
640 &iscsi_nacl_param_DefaultTime2Retain.attr,
641 &iscsi_nacl_param_MaxOutstandingR2T.attr,
642 &iscsi_nacl_param_DataPDUInOrder.attr,
643 &iscsi_nacl_param_DataSequenceInOrder.attr,
644 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
645 NULL,
646 };
647
648 /* End items for lio_target_nacl_param_cit */
649
650 /* Start items for lio_target_acl_cit */
651
652 static ssize_t lio_target_nacl_show_info(
653 struct se_node_acl *se_nacl,
654 char *page)
655 {
656 struct iscsi_session *sess;
657 struct iscsi_conn *conn;
658 struct se_session *se_sess;
659 ssize_t rb = 0;
660
661 spin_lock_bh(&se_nacl->nacl_sess_lock);
662 se_sess = se_nacl->nacl_sess;
663 if (!se_sess) {
664 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
665 " Endpoint: %s\n", se_nacl->initiatorname);
666 } else {
667 sess = se_sess->fabric_sess_ptr;
668
669 rb += sprintf(page+rb, "InitiatorName: %s\n",
670 sess->sess_ops->InitiatorName);
671 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
672 sess->sess_ops->InitiatorAlias);
673
674 rb += sprintf(page+rb,
675 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",
676 sess->sid, sess->isid, sess->tsih);
677 rb += sprintf(page+rb, "SessionType: %s\n",
678 (sess->sess_ops->SessionType) ?
679 "Discovery" : "Normal");
680 rb += sprintf(page+rb, "Session State: ");
681 switch (sess->session_state) {
682 case TARG_SESS_STATE_FREE:
683 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
684 break;
685 case TARG_SESS_STATE_ACTIVE:
686 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
687 break;
688 case TARG_SESS_STATE_LOGGED_IN:
689 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
690 break;
691 case TARG_SESS_STATE_FAILED:
692 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
693 break;
694 case TARG_SESS_STATE_IN_CONTINUE:
695 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
696 break;
697 default:
698 rb += sprintf(page+rb, "ERROR: Unknown Session"
699 " State!\n");
700 break;
701 }
702
703 rb += sprintf(page+rb, "---------------------[iSCSI Session"
704 " Values]-----------------------\n");
705 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
706 " : MaxCmdSN : ITT : TTT\n");
707 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
708 " 0x%08x 0x%08x\n",
709 sess->cmdsn_window,
710 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
711 sess->exp_cmd_sn, sess->max_cmd_sn,
712 sess->init_task_tag, sess->targ_xfer_tag);
713 rb += sprintf(page+rb, "----------------------[iSCSI"
714 " Connections]-------------------------\n");
715
716 spin_lock(&sess->conn_lock);
717 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
718 rb += sprintf(page+rb, "CID: %hu Connection"
719 " State: ", conn->cid);
720 switch (conn->conn_state) {
721 case TARG_CONN_STATE_FREE:
722 rb += sprintf(page+rb,
723 "TARG_CONN_STATE_FREE\n");
724 break;
725 case TARG_CONN_STATE_XPT_UP:
726 rb += sprintf(page+rb,
727 "TARG_CONN_STATE_XPT_UP\n");
728 break;
729 case TARG_CONN_STATE_IN_LOGIN:
730 rb += sprintf(page+rb,
731 "TARG_CONN_STATE_IN_LOGIN\n");
732 break;
733 case TARG_CONN_STATE_LOGGED_IN:
734 rb += sprintf(page+rb,
735 "TARG_CONN_STATE_LOGGED_IN\n");
736 break;
737 case TARG_CONN_STATE_IN_LOGOUT:
738 rb += sprintf(page+rb,
739 "TARG_CONN_STATE_IN_LOGOUT\n");
740 break;
741 case TARG_CONN_STATE_LOGOUT_REQUESTED:
742 rb += sprintf(page+rb,
743 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
744 break;
745 case TARG_CONN_STATE_CLEANUP_WAIT:
746 rb += sprintf(page+rb,
747 "TARG_CONN_STATE_CLEANUP_WAIT\n");
748 break;
749 default:
750 rb += sprintf(page+rb,
751 "ERROR: Unknown Connection State!\n");
752 break;
753 }
754
755 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
756 (conn->network_transport == ISCSI_TCP) ?
757 "TCP" : "SCTP");
758 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
759 conn->stat_sn);
760 }
761 spin_unlock(&sess->conn_lock);
762 }
763 spin_unlock_bh(&se_nacl->nacl_sess_lock);
764
765 return rb;
766 }
767
768 TF_NACL_BASE_ATTR_RO(lio_target, info);
769
770 static ssize_t lio_target_nacl_show_cmdsn_depth(
771 struct se_node_acl *se_nacl,
772 char *page)
773 {
774 return sprintf(page, "%u\n", se_nacl->queue_depth);
775 }
776
777 static ssize_t lio_target_nacl_store_cmdsn_depth(
778 struct se_node_acl *se_nacl,
779 const char *page,
780 size_t count)
781 {
782 struct se_portal_group *se_tpg = se_nacl->se_tpg;
783 struct iscsi_portal_group *tpg = container_of(se_tpg,
784 struct iscsi_portal_group, tpg_se_tpg);
785 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
786 u32 cmdsn_depth = 0;
787 int ret;
788
789 ret = kstrtou32(page, 0, &cmdsn_depth);
790 if (ret)
791 return ret;
792 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
793 pr_err("Passed cmdsn_depth: %u exceeds"
794 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
795 TA_DEFAULT_CMDSN_DEPTH_MAX);
796 return -EINVAL;
797 }
798 acl_ci = &se_nacl->acl_group.cg_item;
799 if (!acl_ci) {
800 pr_err("Unable to locatel acl_ci\n");
801 return -EINVAL;
802 }
803 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
804 if (!tpg_ci) {
805 pr_err("Unable to locate tpg_ci\n");
806 return -EINVAL;
807 }
808 wwn_ci = &tpg_ci->ci_group->cg_item;
809 if (!wwn_ci) {
810 pr_err("Unable to locate config_item wwn_ci\n");
811 return -EINVAL;
812 }
813
814 if (iscsit_get_tpg(tpg) < 0)
815 return -EINVAL;
816 /*
817 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
818 */
819 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
820 config_item_name(acl_ci), cmdsn_depth, 1);
821
822 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
823 "InitiatorName: %s\n", config_item_name(wwn_ci),
824 config_item_name(tpg_ci), cmdsn_depth,
825 config_item_name(acl_ci));
826
827 iscsit_put_tpg(tpg);
828 return (!ret) ? count : (ssize_t)ret;
829 }
830
831 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
832
833 static ssize_t lio_target_nacl_show_tag(
834 struct se_node_acl *se_nacl,
835 char *page)
836 {
837 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
838 }
839
840 static ssize_t lio_target_nacl_store_tag(
841 struct se_node_acl *se_nacl,
842 const char *page,
843 size_t count)
844 {
845 int ret;
846
847 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
848
849 if (ret < 0)
850 return ret;
851 return count;
852 }
853
854 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
855
856 static struct configfs_attribute *lio_target_initiator_attrs[] = {
857 &lio_target_nacl_info.attr,
858 &lio_target_nacl_cmdsn_depth.attr,
859 &lio_target_nacl_tag.attr,
860 NULL,
861 };
862
863 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
864 const char *name)
865 {
866 struct iscsi_node_acl *acl =
867 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
868 struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
869
870 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
871 GFP_KERNEL);
872 if (!stats_cg->default_groups) {
873 pr_err("Unable to allocate memory for"
874 " stats_cg->default_groups\n");
875 return -ENOMEM;
876 }
877
878 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
879 stats_cg->default_groups[1] = NULL;
880 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
881 "iscsi_sess_stats", &iscsi_stat_sess_cit);
882
883 return 0;
884 }
885
886 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl)
887 {
888 struct iscsi_node_acl *acl = container_of(se_nacl,
889 struct iscsi_node_acl, se_node_acl);
890 struct config_item *df_item;
891 struct config_group *stats_cg;
892 int i;
893
894 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
895 for (i = 0; stats_cg->default_groups[i]; i++) {
896 df_item = &stats_cg->default_groups[i]->cg_item;
897 stats_cg->default_groups[i] = NULL;
898 config_item_put(df_item);
899 }
900 kfree(stats_cg->default_groups);
901 }
902
903 /* End items for lio_target_acl_cit */
904
905 /* Start items for lio_target_tpg_attrib_cit */
906
907 #define DEF_TPG_ATTRIB(name) \
908 \
909 static ssize_t iscsi_tpg_attrib_show_##name( \
910 struct se_portal_group *se_tpg, \
911 char *page) \
912 { \
913 struct iscsi_portal_group *tpg = container_of(se_tpg, \
914 struct iscsi_portal_group, tpg_se_tpg); \
915 ssize_t rb; \
916 \
917 if (iscsit_get_tpg(tpg) < 0) \
918 return -EINVAL; \
919 \
920 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
921 iscsit_put_tpg(tpg); \
922 return rb; \
923 } \
924 \
925 static ssize_t iscsi_tpg_attrib_store_##name( \
926 struct se_portal_group *se_tpg, \
927 const char *page, \
928 size_t count) \
929 { \
930 struct iscsi_portal_group *tpg = container_of(se_tpg, \
931 struct iscsi_portal_group, tpg_se_tpg); \
932 u32 val; \
933 int ret; \
934 \
935 if (iscsit_get_tpg(tpg) < 0) \
936 return -EINVAL; \
937 \
938 ret = kstrtou32(page, 0, &val); \
939 if (ret) \
940 goto out; \
941 ret = iscsit_ta_##name(tpg, val); \
942 if (ret < 0) \
943 goto out; \
944 \
945 iscsit_put_tpg(tpg); \
946 return count; \
947 out: \
948 iscsit_put_tpg(tpg); \
949 return ret; \
950 }
951
952 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
953
954 /*
955 * Define iscsi_tpg_attrib_s_authentication
956 */
957 DEF_TPG_ATTRIB(authentication);
958 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
959 /*
960 * Define iscsi_tpg_attrib_s_login_timeout
961 */
962 DEF_TPG_ATTRIB(login_timeout);
963 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
964 /*
965 * Define iscsi_tpg_attrib_s_netif_timeout
966 */
967 DEF_TPG_ATTRIB(netif_timeout);
968 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
969 /*
970 * Define iscsi_tpg_attrib_s_generate_node_acls
971 */
972 DEF_TPG_ATTRIB(generate_node_acls);
973 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
974 /*
975 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
976 */
977 DEF_TPG_ATTRIB(default_cmdsn_depth);
978 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
979 /*
980 Define iscsi_tpg_attrib_s_cache_dynamic_acls
981 */
982 DEF_TPG_ATTRIB(cache_dynamic_acls);
983 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
984 /*
985 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
986 */
987 DEF_TPG_ATTRIB(demo_mode_write_protect);
988 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
989 /*
990 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
991 */
992 DEF_TPG_ATTRIB(prod_mode_write_protect);
993 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
994 /*
995 * Define iscsi_tpg_attrib_s_demo_mode_discovery,
996 */
997 DEF_TPG_ATTRIB(demo_mode_discovery);
998 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
999 /*
1000 * Define iscsi_tpg_attrib_s_default_erl
1001 */
1002 DEF_TPG_ATTRIB(default_erl);
1003 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1004 /*
1005 * Define iscsi_tpg_attrib_s_t10_pi
1006 */
1007 DEF_TPG_ATTRIB(t10_pi);
1008 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1009 /*
1010 * Define iscsi_tpg_attrib_s_fabric_prot_type
1011 */
1012 DEF_TPG_ATTRIB(fabric_prot_type);
1013 TPG_ATTR(fabric_prot_type, S_IRUGO | S_IWUSR);
1014
1015 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1016 &iscsi_tpg_attrib_authentication.attr,
1017 &iscsi_tpg_attrib_login_timeout.attr,
1018 &iscsi_tpg_attrib_netif_timeout.attr,
1019 &iscsi_tpg_attrib_generate_node_acls.attr,
1020 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1021 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1022 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1023 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1024 &iscsi_tpg_attrib_demo_mode_discovery.attr,
1025 &iscsi_tpg_attrib_default_erl.attr,
1026 &iscsi_tpg_attrib_t10_pi.attr,
1027 &iscsi_tpg_attrib_fabric_prot_type.attr,
1028 NULL,
1029 };
1030
1031 /* End items for lio_target_tpg_attrib_cit */
1032
1033 /* Start items for lio_target_tpg_auth_cit */
1034
1035 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
1036 static ssize_t __iscsi_##prefix##_show_##name( \
1037 struct se_portal_group *se_tpg, \
1038 char *page) \
1039 { \
1040 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1041 struct iscsi_portal_group, tpg_se_tpg); \
1042 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1043 \
1044 if (!capable(CAP_SYS_ADMIN)) \
1045 return -EPERM; \
1046 \
1047 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
1048 } \
1049 \
1050 static ssize_t __iscsi_##prefix##_store_##name( \
1051 struct se_portal_group *se_tpg, \
1052 const char *page, \
1053 size_t count) \
1054 { \
1055 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1056 struct iscsi_portal_group, tpg_se_tpg); \
1057 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1058 \
1059 if (!capable(CAP_SYS_ADMIN)) \
1060 return -EPERM; \
1061 \
1062 snprintf(auth->name, sizeof(auth->name), "%s", page); \
1063 if (!(strncmp("NULL", auth->name, 4))) \
1064 auth->naf_flags &= ~flags; \
1065 else \
1066 auth->naf_flags |= flags; \
1067 \
1068 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
1069 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
1070 auth->authenticate_target = 1; \
1071 else \
1072 auth->authenticate_target = 0; \
1073 \
1074 return count; \
1075 }
1076
1077 #define __DEF_TPG_AUTH_INT(prefix, name) \
1078 static ssize_t __iscsi_##prefix##_show_##name( \
1079 struct se_portal_group *se_tpg, \
1080 char *page) \
1081 { \
1082 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1083 struct iscsi_portal_group, tpg_se_tpg); \
1084 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1085 \
1086 if (!capable(CAP_SYS_ADMIN)) \
1087 return -EPERM; \
1088 \
1089 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
1090 }
1091
1092 #define DEF_TPG_AUTH_STR(name, flags) \
1093 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
1094 static ssize_t iscsi_tpg_auth_show_##name( \
1095 struct se_portal_group *se_tpg, \
1096 char *page) \
1097 { \
1098 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1099 } \
1100 \
1101 static ssize_t iscsi_tpg_auth_store_##name( \
1102 struct se_portal_group *se_tpg, \
1103 const char *page, \
1104 size_t count) \
1105 { \
1106 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \
1107 }
1108
1109 #define DEF_TPG_AUTH_INT(name) \
1110 __DEF_TPG_AUTH_INT(tpg_auth, name) \
1111 static ssize_t iscsi_tpg_auth_show_##name( \
1112 struct se_portal_group *se_tpg, \
1113 char *page) \
1114 { \
1115 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1116 }
1117
1118 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1119 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1120
1121 /*
1122 * * One-way authentication userid
1123 * */
1124 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1125 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1126 /*
1127 * * One-way authentication password
1128 * */
1129 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1130 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1131 /*
1132 * * Enforce mutual authentication
1133 * */
1134 DEF_TPG_AUTH_INT(authenticate_target);
1135 TPG_AUTH_ATTR_RO(authenticate_target);
1136 /*
1137 * * Mutual authentication userid
1138 * */
1139 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1140 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1141 /*
1142 * * Mutual authentication password
1143 * */
1144 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1145 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1146
1147 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1148 &iscsi_tpg_auth_userid.attr,
1149 &iscsi_tpg_auth_password.attr,
1150 &iscsi_tpg_auth_authenticate_target.attr,
1151 &iscsi_tpg_auth_userid_mutual.attr,
1152 &iscsi_tpg_auth_password_mutual.attr,
1153 NULL,
1154 };
1155
1156 /* End items for lio_target_tpg_auth_cit */
1157
1158 /* Start items for lio_target_tpg_param_cit */
1159
1160 #define DEF_TPG_PARAM(name) \
1161 static ssize_t iscsi_tpg_param_show_##name( \
1162 struct se_portal_group *se_tpg, \
1163 char *page) \
1164 { \
1165 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1166 struct iscsi_portal_group, tpg_se_tpg); \
1167 struct iscsi_param *param; \
1168 ssize_t rb; \
1169 \
1170 if (iscsit_get_tpg(tpg) < 0) \
1171 return -EINVAL; \
1172 \
1173 param = iscsi_find_param_from_key(__stringify(name), \
1174 tpg->param_list); \
1175 if (!param) { \
1176 iscsit_put_tpg(tpg); \
1177 return -EINVAL; \
1178 } \
1179 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1180 \
1181 iscsit_put_tpg(tpg); \
1182 return rb; \
1183 } \
1184 static ssize_t iscsi_tpg_param_store_##name( \
1185 struct se_portal_group *se_tpg, \
1186 const char *page, \
1187 size_t count) \
1188 { \
1189 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1190 struct iscsi_portal_group, tpg_se_tpg); \
1191 char *buf; \
1192 int ret, len; \
1193 \
1194 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1195 if (!buf) \
1196 return -ENOMEM; \
1197 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1198 if (isspace(buf[len-1])) \
1199 buf[len-1] = '\0'; /* Kill newline */ \
1200 \
1201 if (iscsit_get_tpg(tpg) < 0) { \
1202 kfree(buf); \
1203 return -EINVAL; \
1204 } \
1205 \
1206 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1207 if (ret < 0) \
1208 goto out; \
1209 \
1210 kfree(buf); \
1211 iscsit_put_tpg(tpg); \
1212 return count; \
1213 out: \
1214 kfree(buf); \
1215 iscsit_put_tpg(tpg); \
1216 return -EINVAL; \
1217 }
1218
1219 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1220
1221 DEF_TPG_PARAM(AuthMethod);
1222 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1223
1224 DEF_TPG_PARAM(HeaderDigest);
1225 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1226
1227 DEF_TPG_PARAM(DataDigest);
1228 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1229
1230 DEF_TPG_PARAM(MaxConnections);
1231 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1232
1233 DEF_TPG_PARAM(TargetAlias);
1234 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1235
1236 DEF_TPG_PARAM(InitialR2T);
1237 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1238
1239 DEF_TPG_PARAM(ImmediateData);
1240 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1241
1242 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1243 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1244
1245 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1246 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1247
1248 DEF_TPG_PARAM(MaxBurstLength);
1249 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1250
1251 DEF_TPG_PARAM(FirstBurstLength);
1252 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1253
1254 DEF_TPG_PARAM(DefaultTime2Wait);
1255 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1256
1257 DEF_TPG_PARAM(DefaultTime2Retain);
1258 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1259
1260 DEF_TPG_PARAM(MaxOutstandingR2T);
1261 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1262
1263 DEF_TPG_PARAM(DataPDUInOrder);
1264 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1265
1266 DEF_TPG_PARAM(DataSequenceInOrder);
1267 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1268
1269 DEF_TPG_PARAM(ErrorRecoveryLevel);
1270 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1271
1272 DEF_TPG_PARAM(IFMarker);
1273 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1274
1275 DEF_TPG_PARAM(OFMarker);
1276 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1277
1278 DEF_TPG_PARAM(IFMarkInt);
1279 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1280
1281 DEF_TPG_PARAM(OFMarkInt);
1282 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1283
1284 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1285 &iscsi_tpg_param_AuthMethod.attr,
1286 &iscsi_tpg_param_HeaderDigest.attr,
1287 &iscsi_tpg_param_DataDigest.attr,
1288 &iscsi_tpg_param_MaxConnections.attr,
1289 &iscsi_tpg_param_TargetAlias.attr,
1290 &iscsi_tpg_param_InitialR2T.attr,
1291 &iscsi_tpg_param_ImmediateData.attr,
1292 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1293 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1294 &iscsi_tpg_param_MaxBurstLength.attr,
1295 &iscsi_tpg_param_FirstBurstLength.attr,
1296 &iscsi_tpg_param_DefaultTime2Wait.attr,
1297 &iscsi_tpg_param_DefaultTime2Retain.attr,
1298 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1299 &iscsi_tpg_param_DataPDUInOrder.attr,
1300 &iscsi_tpg_param_DataSequenceInOrder.attr,
1301 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1302 &iscsi_tpg_param_IFMarker.attr,
1303 &iscsi_tpg_param_OFMarker.attr,
1304 &iscsi_tpg_param_IFMarkInt.attr,
1305 &iscsi_tpg_param_OFMarkInt.attr,
1306 NULL,
1307 };
1308
1309 /* End items for lio_target_tpg_param_cit */
1310
1311 /* Start items for lio_target_tpg_cit */
1312
1313 static ssize_t lio_target_tpg_show_enable(
1314 struct se_portal_group *se_tpg,
1315 char *page)
1316 {
1317 struct iscsi_portal_group *tpg = container_of(se_tpg,
1318 struct iscsi_portal_group, tpg_se_tpg);
1319 ssize_t len;
1320
1321 spin_lock(&tpg->tpg_state_lock);
1322 len = sprintf(page, "%d\n",
1323 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1324 spin_unlock(&tpg->tpg_state_lock);
1325
1326 return len;
1327 }
1328
1329 static ssize_t lio_target_tpg_store_enable(
1330 struct se_portal_group *se_tpg,
1331 const char *page,
1332 size_t count)
1333 {
1334 struct iscsi_portal_group *tpg = container_of(se_tpg,
1335 struct iscsi_portal_group, tpg_se_tpg);
1336 u32 op;
1337 int ret;
1338
1339 ret = kstrtou32(page, 0, &op);
1340 if (ret)
1341 return ret;
1342 if ((op != 1) && (op != 0)) {
1343 pr_err("Illegal value for tpg_enable: %u\n", op);
1344 return -EINVAL;
1345 }
1346
1347 ret = iscsit_get_tpg(tpg);
1348 if (ret < 0)
1349 return -EINVAL;
1350
1351 if (op) {
1352 ret = iscsit_tpg_enable_portal_group(tpg);
1353 if (ret < 0)
1354 goto out;
1355 } else {
1356 /*
1357 * iscsit_tpg_disable_portal_group() assumes force=1
1358 */
1359 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1360 if (ret < 0)
1361 goto out;
1362 }
1363
1364 iscsit_put_tpg(tpg);
1365 return count;
1366 out:
1367 iscsit_put_tpg(tpg);
1368 return -EINVAL;
1369 }
1370
1371 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1372
1373 static ssize_t lio_target_tpg_show_dynamic_sessions(
1374 struct se_portal_group *se_tpg,
1375 char *page)
1376 {
1377 return target_show_dynamic_sessions(se_tpg, page);
1378 }
1379
1380 TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions);
1381
1382 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1383 &lio_target_tpg_enable.attr,
1384 &lio_target_tpg_dynamic_sessions.attr,
1385 NULL,
1386 };
1387
1388 /* End items for lio_target_tpg_cit */
1389
1390 /* Start items for lio_target_tiqn_cit */
1391
1392 static struct se_portal_group *lio_target_tiqn_addtpg(
1393 struct se_wwn *wwn,
1394 struct config_group *group,
1395 const char *name)
1396 {
1397 struct iscsi_portal_group *tpg;
1398 struct iscsi_tiqn *tiqn;
1399 char *tpgt_str;
1400 int ret;
1401 u16 tpgt;
1402
1403 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1404 /*
1405 * Only tpgt_# directory groups can be created below
1406 * target/iscsi/iqn.superturodiskarry/
1407 */
1408 tpgt_str = strstr(name, "tpgt_");
1409 if (!tpgt_str) {
1410 pr_err("Unable to locate \"tpgt_#\" directory"
1411 " group\n");
1412 return NULL;
1413 }
1414 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1415 ret = kstrtou16(tpgt_str, 0, &tpgt);
1416 if (ret)
1417 return NULL;
1418
1419 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1420 if (!tpg)
1421 return NULL;
1422
1423 ret = core_tpg_register(&iscsi_ops, wwn, &tpg->tpg_se_tpg,
1424 tpg, TRANSPORT_TPG_TYPE_NORMAL);
1425 if (ret < 0)
1426 return NULL;
1427
1428 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1429 if (ret != 0)
1430 goto out;
1431
1432 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1433 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1434 name);
1435 return &tpg->tpg_se_tpg;
1436 out:
1437 core_tpg_deregister(&tpg->tpg_se_tpg);
1438 kfree(tpg);
1439 return NULL;
1440 }
1441
1442 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1443 {
1444 struct iscsi_portal_group *tpg;
1445 struct iscsi_tiqn *tiqn;
1446
1447 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1448 tiqn = tpg->tpg_tiqn;
1449 /*
1450 * iscsit_tpg_del_portal_group() assumes force=1
1451 */
1452 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1453 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1454 }
1455
1456 /* End items for lio_target_tiqn_cit */
1457
1458 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1459
1460 static ssize_t lio_target_wwn_show_attr_lio_version(
1461 struct target_fabric_configfs *tf,
1462 char *page)
1463 {
1464 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1465 }
1466
1467 TF_WWN_ATTR_RO(lio_target, lio_version);
1468
1469 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1470 &lio_target_wwn_lio_version.attr,
1471 NULL,
1472 };
1473
1474 static struct se_wwn *lio_target_call_coreaddtiqn(
1475 struct target_fabric_configfs *tf,
1476 struct config_group *group,
1477 const char *name)
1478 {
1479 struct config_group *stats_cg;
1480 struct iscsi_tiqn *tiqn;
1481
1482 tiqn = iscsit_add_tiqn((unsigned char *)name);
1483 if (IS_ERR(tiqn))
1484 return ERR_CAST(tiqn);
1485 /*
1486 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1487 */
1488 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1489
1490 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1491 GFP_KERNEL);
1492 if (!stats_cg->default_groups) {
1493 pr_err("Unable to allocate memory for"
1494 " stats_cg->default_groups\n");
1495 iscsit_del_tiqn(tiqn);
1496 return ERR_PTR(-ENOMEM);
1497 }
1498
1499 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1500 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1501 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1502 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1503 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1504 stats_cg->default_groups[5] = NULL;
1505 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1506 "iscsi_instance", &iscsi_stat_instance_cit);
1507 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1508 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1509 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1510 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1511 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1512 "iscsi_login_stats", &iscsi_stat_login_cit);
1513 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1514 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1515
1516 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1517 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1518 " %s\n", name);
1519 return &tiqn->tiqn_wwn;
1520 }
1521
1522 static void lio_target_call_coredeltiqn(
1523 struct se_wwn *wwn)
1524 {
1525 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1526 struct config_item *df_item;
1527 struct config_group *stats_cg;
1528 int i;
1529
1530 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1531 for (i = 0; stats_cg->default_groups[i]; i++) {
1532 df_item = &stats_cg->default_groups[i]->cg_item;
1533 stats_cg->default_groups[i] = NULL;
1534 config_item_put(df_item);
1535 }
1536 kfree(stats_cg->default_groups);
1537
1538 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1539 tiqn->tiqn);
1540 iscsit_del_tiqn(tiqn);
1541 }
1542
1543 /* End LIO-Target TIQN struct contig_lio_target_cit */
1544
1545 /* Start lio_target_discovery_auth_cit */
1546
1547 #define DEF_DISC_AUTH_STR(name, flags) \
1548 __DEF_NACL_AUTH_STR(disc, name, flags) \
1549 static ssize_t iscsi_disc_show_##name( \
1550 struct target_fabric_configfs *tf, \
1551 char *page) \
1552 { \
1553 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1554 page); \
1555 } \
1556 static ssize_t iscsi_disc_store_##name( \
1557 struct target_fabric_configfs *tf, \
1558 const char *page, \
1559 size_t count) \
1560 { \
1561 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1562 page, count); \
1563 }
1564
1565 #define DEF_DISC_AUTH_INT(name) \
1566 __DEF_NACL_AUTH_INT(disc, name) \
1567 static ssize_t iscsi_disc_show_##name( \
1568 struct target_fabric_configfs *tf, \
1569 char *page) \
1570 { \
1571 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1572 page); \
1573 }
1574
1575 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1576 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1577
1578 /*
1579 * One-way authentication userid
1580 */
1581 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1582 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1583 /*
1584 * One-way authentication password
1585 */
1586 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1587 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1588 /*
1589 * Enforce mutual authentication
1590 */
1591 DEF_DISC_AUTH_INT(authenticate_target);
1592 DISC_AUTH_ATTR_RO(authenticate_target);
1593 /*
1594 * Mutual authentication userid
1595 */
1596 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1597 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1598 /*
1599 * Mutual authentication password
1600 */
1601 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1602 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1603
1604 /*
1605 * enforce_discovery_auth
1606 */
1607 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1608 struct target_fabric_configfs *tf,
1609 char *page)
1610 {
1611 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1612
1613 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1614 }
1615
1616 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1617 struct target_fabric_configfs *tf,
1618 const char *page,
1619 size_t count)
1620 {
1621 struct iscsi_param *param;
1622 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1623 u32 op;
1624 int err;
1625
1626 err = kstrtou32(page, 0, &op);
1627 if (err)
1628 return -EINVAL;
1629 if ((op != 1) && (op != 0)) {
1630 pr_err("Illegal value for enforce_discovery_auth:"
1631 " %u\n", op);
1632 return -EINVAL;
1633 }
1634
1635 if (!discovery_tpg) {
1636 pr_err("iscsit_global->discovery_tpg is NULL\n");
1637 return -EINVAL;
1638 }
1639
1640 param = iscsi_find_param_from_key(AUTHMETHOD,
1641 discovery_tpg->param_list);
1642 if (!param)
1643 return -EINVAL;
1644
1645 if (op) {
1646 /*
1647 * Reset the AuthMethod key to CHAP.
1648 */
1649 if (iscsi_update_param_value(param, CHAP) < 0)
1650 return -EINVAL;
1651
1652 discovery_tpg->tpg_attrib.authentication = 1;
1653 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1654 pr_debug("LIO-CORE[0] Successfully enabled"
1655 " authentication enforcement for iSCSI"
1656 " Discovery TPG\n");
1657 } else {
1658 /*
1659 * Reset the AuthMethod key to CHAP,None
1660 */
1661 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1662 return -EINVAL;
1663
1664 discovery_tpg->tpg_attrib.authentication = 0;
1665 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1666 pr_debug("LIO-CORE[0] Successfully disabled"
1667 " authentication enforcement for iSCSI"
1668 " Discovery TPG\n");
1669 }
1670
1671 return count;
1672 }
1673
1674 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1675
1676 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1677 &iscsi_disc_userid.attr,
1678 &iscsi_disc_password.attr,
1679 &iscsi_disc_authenticate_target.attr,
1680 &iscsi_disc_userid_mutual.attr,
1681 &iscsi_disc_password_mutual.attr,
1682 &iscsi_disc_enforce_discovery_auth.attr,
1683 NULL,
1684 };
1685
1686 /* End lio_target_discovery_auth_cit */
1687
1688 /* Start functions for target_core_fabric_ops */
1689
1690 static char *iscsi_get_fabric_name(void)
1691 {
1692 return "iSCSI";
1693 }
1694
1695 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1696 {
1697 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1698
1699 /* only used for printks or comparism with ->ref_task_tag */
1700 return (__force u32)cmd->init_task_tag;
1701 }
1702
1703 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1704 {
1705 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1706
1707 return cmd->i_state;
1708 }
1709
1710 static u32 lio_sess_get_index(struct se_session *se_sess)
1711 {
1712 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1713
1714 return sess->session_index;
1715 }
1716
1717 static u32 lio_sess_get_initiator_sid(
1718 struct se_session *se_sess,
1719 unsigned char *buf,
1720 u32 size)
1721 {
1722 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1723 /*
1724 * iSCSI Initiator Session Identifier from RFC-3720.
1725 */
1726 return snprintf(buf, size, "%6phN", sess->isid);
1727 }
1728
1729 static int lio_queue_data_in(struct se_cmd *se_cmd)
1730 {
1731 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1732
1733 cmd->i_state = ISTATE_SEND_DATAIN;
1734 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1735
1736 return 0;
1737 }
1738
1739 static int lio_write_pending(struct se_cmd *se_cmd)
1740 {
1741 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1742 struct iscsi_conn *conn = cmd->conn;
1743
1744 if (!cmd->immediate_data && !cmd->unsolicited_data)
1745 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1746
1747 return 0;
1748 }
1749
1750 static int lio_write_pending_status(struct se_cmd *se_cmd)
1751 {
1752 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1753 int ret;
1754
1755 spin_lock_bh(&cmd->istate_lock);
1756 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1757 spin_unlock_bh(&cmd->istate_lock);
1758
1759 return ret;
1760 }
1761
1762 static int lio_queue_status(struct se_cmd *se_cmd)
1763 {
1764 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1765
1766 cmd->i_state = ISTATE_SEND_STATUS;
1767
1768 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1769 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1770 return 0;
1771 }
1772 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1773
1774 return 0;
1775 }
1776
1777 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1778 {
1779 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1780
1781 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1782 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1783 }
1784
1785 static void lio_aborted_task(struct se_cmd *se_cmd)
1786 {
1787 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1788
1789 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1790 }
1791
1792 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1793 {
1794 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1795
1796 return &tpg->tpg_tiqn->tiqn[0];
1797 }
1798
1799 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1800 {
1801 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1802
1803 return tpg->tpgt;
1804 }
1805
1806 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1807 {
1808 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1809
1810 return tpg->tpg_attrib.default_cmdsn_depth;
1811 }
1812
1813 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1814 {
1815 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1816
1817 return tpg->tpg_attrib.generate_node_acls;
1818 }
1819
1820 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1821 {
1822 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1823
1824 return tpg->tpg_attrib.cache_dynamic_acls;
1825 }
1826
1827 static int lio_tpg_check_demo_mode_write_protect(
1828 struct se_portal_group *se_tpg)
1829 {
1830 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1831
1832 return tpg->tpg_attrib.demo_mode_write_protect;
1833 }
1834
1835 static int lio_tpg_check_prod_mode_write_protect(
1836 struct se_portal_group *se_tpg)
1837 {
1838 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1839
1840 return tpg->tpg_attrib.prod_mode_write_protect;
1841 }
1842
1843 static int lio_tpg_check_prot_fabric_only(
1844 struct se_portal_group *se_tpg)
1845 {
1846 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1847 /*
1848 * Only report fabric_prot_type if t10_pi has also been enabled
1849 * for incoming ib_isert sessions.
1850 */
1851 if (!tpg->tpg_attrib.t10_pi)
1852 return 0;
1853
1854 return tpg->tpg_attrib.fabric_prot_type;
1855 }
1856
1857 /*
1858 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1859 *
1860 * Also, this function calls iscsit_inc_session_usage_count() on the
1861 * struct iscsi_session in question.
1862 */
1863 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1864 {
1865 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1866
1867 spin_lock(&sess->conn_lock);
1868 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1869 atomic_read(&sess->session_logout) ||
1870 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1871 spin_unlock(&sess->conn_lock);
1872 return 0;
1873 }
1874 atomic_set(&sess->session_reinstatement, 1);
1875 spin_unlock(&sess->conn_lock);
1876
1877 iscsit_stop_time2retain_timer(sess);
1878 iscsit_stop_session(sess, 1, 1);
1879
1880 return 1;
1881 }
1882
1883 /*
1884 * Calls iscsit_dec_session_usage_count() as inverse of
1885 * lio_tpg_shutdown_session()
1886 */
1887 static void lio_tpg_close_session(struct se_session *se_sess)
1888 {
1889 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1890 /*
1891 * If the iSCSI Session for the iSCSI Initiator Node exists,
1892 * forcefully shutdown the iSCSI NEXUS.
1893 */
1894 iscsit_close_session(sess);
1895 }
1896
1897 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1898 {
1899 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1900
1901 return tpg->tpg_tiqn->tiqn_index;
1902 }
1903
1904 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1905 {
1906 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1907 se_node_acl);
1908 struct se_portal_group *se_tpg = se_acl->se_tpg;
1909 struct iscsi_portal_group *tpg = container_of(se_tpg,
1910 struct iscsi_portal_group, tpg_se_tpg);
1911
1912 acl->node_attrib.nacl = acl;
1913 iscsit_set_default_node_attribues(acl, tpg);
1914 }
1915
1916 static int lio_check_stop_free(struct se_cmd *se_cmd)
1917 {
1918 return target_put_sess_cmd(se_cmd);
1919 }
1920
1921 static void lio_release_cmd(struct se_cmd *se_cmd)
1922 {
1923 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1924
1925 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1926 iscsit_release_cmd(cmd);
1927 }
1928
1929 const struct target_core_fabric_ops iscsi_ops = {
1930 .module = THIS_MODULE,
1931 .name = "iscsi",
1932 .node_acl_size = sizeof(struct iscsi_node_acl),
1933 .get_fabric_name = iscsi_get_fabric_name,
1934 .get_fabric_proto_ident = iscsi_get_fabric_proto_ident,
1935 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,
1936 .tpg_get_tag = lio_tpg_get_tag,
1937 .tpg_get_default_depth = lio_tpg_get_default_depth,
1938 .tpg_get_pr_transport_id = iscsi_get_pr_transport_id,
1939 .tpg_get_pr_transport_id_len = iscsi_get_pr_transport_id_len,
1940 .tpg_parse_pr_out_transport_id = iscsi_parse_pr_out_transport_id,
1941 .tpg_check_demo_mode = lio_tpg_check_demo_mode,
1942 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
1943 .tpg_check_demo_mode_write_protect =
1944 lio_tpg_check_demo_mode_write_protect,
1945 .tpg_check_prod_mode_write_protect =
1946 lio_tpg_check_prod_mode_write_protect,
1947 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
1948 .tpg_get_inst_index = lio_tpg_get_inst_index,
1949 .check_stop_free = lio_check_stop_free,
1950 .release_cmd = lio_release_cmd,
1951 .shutdown_session = lio_tpg_shutdown_session,
1952 .close_session = lio_tpg_close_session,
1953 .sess_get_index = lio_sess_get_index,
1954 .sess_get_initiator_sid = lio_sess_get_initiator_sid,
1955 .write_pending = lio_write_pending,
1956 .write_pending_status = lio_write_pending_status,
1957 .set_default_node_attributes = lio_set_default_node_attributes,
1958 .get_task_tag = iscsi_get_task_tag,
1959 .get_cmd_state = iscsi_get_cmd_state,
1960 .queue_data_in = lio_queue_data_in,
1961 .queue_status = lio_queue_status,
1962 .queue_tm_rsp = lio_queue_tm_rsp,
1963 .aborted_task = lio_aborted_task,
1964 .fabric_make_wwn = lio_target_call_coreaddtiqn,
1965 .fabric_drop_wwn = lio_target_call_coredeltiqn,
1966 .fabric_make_tpg = lio_target_tiqn_addtpg,
1967 .fabric_drop_tpg = lio_target_tiqn_deltpg,
1968 .fabric_make_np = lio_target_call_addnptotpg,
1969 .fabric_drop_np = lio_target_call_delnpfromtpg,
1970 .fabric_init_nodeacl = lio_target_init_nodeacl,
1971 .fabric_cleanup_nodeacl = lio_target_cleanup_nodeacl,
1972
1973 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,
1974 .tfc_wwn_attrs = lio_target_wwn_attrs,
1975 .tfc_tpg_base_attrs = lio_target_tpg_attrs,
1976 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
1977 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
1978 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
1979 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,
1980 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
1981 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
1982 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
1983 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
1984 };
Linux kernel - Deliverables
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