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Merge git://git.kvack.org/~bcrl/aio-fixes
[mirror_ubuntu-artful-kernel.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 "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 "iscsi_target_stat.h"
40 #include "iscsi_target_configfs.h"
41
42 struct target_fabric_configfs *lio_target_fabric_configfs;
43
44 struct lio_target_configfs_attribute {
45 struct configfs_attribute attr;
46 ssize_t (*show)(void *, char *);
47 ssize_t (*store)(void *, const char *, size_t);
48 };
49
50 /* Start items for lio_target_portal_cit */
51
52 static ssize_t lio_target_np_show_sctp(
53 struct se_tpg_np *se_tpg_np,
54 char *page)
55 {
56 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
57 struct iscsi_tpg_np, se_tpg_np);
58 struct iscsi_tpg_np *tpg_np_sctp;
59 ssize_t rb;
60
61 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
62 if (tpg_np_sctp)
63 rb = sprintf(page, "1\n");
64 else
65 rb = sprintf(page, "0\n");
66
67 return rb;
68 }
69
70 static ssize_t lio_target_np_store_sctp(
71 struct se_tpg_np *se_tpg_np,
72 const char *page,
73 size_t count)
74 {
75 struct iscsi_np *np;
76 struct iscsi_portal_group *tpg;
77 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
78 struct iscsi_tpg_np, se_tpg_np);
79 struct iscsi_tpg_np *tpg_np_sctp = NULL;
80 u32 op;
81 int ret;
82
83 ret = kstrtou32(page, 0, &op);
84 if (ret)
85 return ret;
86 if ((op != 1) && (op != 0)) {
87 pr_err("Illegal value for tpg_enable: %u\n", op);
88 return -EINVAL;
89 }
90 np = tpg_np->tpg_np;
91 if (!np) {
92 pr_err("Unable to locate struct iscsi_np from"
93 " struct iscsi_tpg_np\n");
94 return -EINVAL;
95 }
96
97 tpg = tpg_np->tpg;
98 if (iscsit_get_tpg(tpg) < 0)
99 return -EINVAL;
100
101 if (op) {
102 /*
103 * Use existing np->np_sockaddr for SCTP network portal reference
104 */
105 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
106 np->np_ip, tpg_np, ISCSI_SCTP_TCP);
107 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
108 goto out;
109 } else {
110 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
111 if (!tpg_np_sctp)
112 goto out;
113
114 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
115 if (ret < 0)
116 goto out;
117 }
118
119 iscsit_put_tpg(tpg);
120 return count;
121 out:
122 iscsit_put_tpg(tpg);
123 return -EINVAL;
124 }
125
126 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
127
128 static ssize_t lio_target_np_show_iser(
129 struct se_tpg_np *se_tpg_np,
130 char *page)
131 {
132 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
133 struct iscsi_tpg_np, se_tpg_np);
134 struct iscsi_tpg_np *tpg_np_iser;
135 ssize_t rb;
136
137 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
138 if (tpg_np_iser)
139 rb = sprintf(page, "1\n");
140 else
141 rb = sprintf(page, "0\n");
142
143 return rb;
144 }
145
146 static ssize_t lio_target_np_store_iser(
147 struct se_tpg_np *se_tpg_np,
148 const char *page,
149 size_t count)
150 {
151 struct iscsi_np *np;
152 struct iscsi_portal_group *tpg;
153 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
154 struct iscsi_tpg_np, se_tpg_np);
155 struct iscsi_tpg_np *tpg_np_iser = NULL;
156 char *endptr;
157 u32 op;
158 int rc = 0;
159
160 op = simple_strtoul(page, &endptr, 0);
161 if ((op != 1) && (op != 0)) {
162 pr_err("Illegal value for tpg_enable: %u\n", op);
163 return -EINVAL;
164 }
165 np = tpg_np->tpg_np;
166 if (!np) {
167 pr_err("Unable to locate struct iscsi_np from"
168 " struct iscsi_tpg_np\n");
169 return -EINVAL;
170 }
171
172 tpg = tpg_np->tpg;
173 if (iscsit_get_tpg(tpg) < 0)
174 return -EINVAL;
175
176 if (op) {
177 rc = request_module("ib_isert");
178 if (rc != 0) {
179 pr_warn("Unable to request_module for ib_isert\n");
180 rc = 0;
181 }
182
183 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
184 np->np_ip, tpg_np, ISCSI_INFINIBAND);
185 if (IS_ERR(tpg_np_iser)) {
186 rc = PTR_ERR(tpg_np_iser);
187 goto out;
188 }
189 } else {
190 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
191 if (tpg_np_iser) {
192 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
193 if (rc < 0)
194 goto out;
195 }
196 }
197
198 iscsit_put_tpg(tpg);
199 return count;
200 out:
201 iscsit_put_tpg(tpg);
202 return rc;
203 }
204
205 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
206
207 static struct configfs_attribute *lio_target_portal_attrs[] = {
208 &lio_target_np_sctp.attr,
209 &lio_target_np_iser.attr,
210 NULL,
211 };
212
213 /* Stop items for lio_target_portal_cit */
214
215 /* Start items for lio_target_np_cit */
216
217 #define MAX_PORTAL_LEN 256
218
219 static struct se_tpg_np *lio_target_call_addnptotpg(
220 struct se_portal_group *se_tpg,
221 struct config_group *group,
222 const char *name)
223 {
224 struct iscsi_portal_group *tpg;
225 struct iscsi_tpg_np *tpg_np;
226 char *str, *str2, *ip_str, *port_str;
227 struct __kernel_sockaddr_storage sockaddr;
228 struct sockaddr_in *sock_in;
229 struct sockaddr_in6 *sock_in6;
230 unsigned long port;
231 int ret;
232 char buf[MAX_PORTAL_LEN + 1];
233
234 if (strlen(name) > MAX_PORTAL_LEN) {
235 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
236 (int)strlen(name), MAX_PORTAL_LEN);
237 return ERR_PTR(-EOVERFLOW);
238 }
239 memset(buf, 0, MAX_PORTAL_LEN + 1);
240 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
241
242 memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
243
244 str = strstr(buf, "[");
245 if (str) {
246 const char *end;
247
248 str2 = strstr(str, "]");
249 if (!str2) {
250 pr_err("Unable to locate trailing \"]\""
251 " in IPv6 iSCSI network portal address\n");
252 return ERR_PTR(-EINVAL);
253 }
254 str++; /* Skip over leading "[" */
255 *str2 = '\0'; /* Terminate the IPv6 address */
256 str2++; /* Skip over the "]" */
257 port_str = strstr(str2, ":");
258 if (!port_str) {
259 pr_err("Unable to locate \":port\""
260 " in IPv6 iSCSI network portal address\n");
261 return ERR_PTR(-EINVAL);
262 }
263 *port_str = '\0'; /* Terminate string for IP */
264 port_str++; /* Skip over ":" */
265
266 ret = kstrtoul(port_str, 0, &port);
267 if (ret < 0) {
268 pr_err("kstrtoul() failed for port_str: %d\n", ret);
269 return ERR_PTR(ret);
270 }
271 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
272 sock_in6->sin6_family = AF_INET6;
273 sock_in6->sin6_port = htons((unsigned short)port);
274 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
275 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
276 if (ret <= 0) {
277 pr_err("in6_pton returned: %d\n", ret);
278 return ERR_PTR(-EINVAL);
279 }
280 } else {
281 str = ip_str = &buf[0];
282 port_str = strstr(ip_str, ":");
283 if (!port_str) {
284 pr_err("Unable to locate \":port\""
285 " in IPv4 iSCSI network portal address\n");
286 return ERR_PTR(-EINVAL);
287 }
288 *port_str = '\0'; /* Terminate string for IP */
289 port_str++; /* Skip over ":" */
290
291 ret = kstrtoul(port_str, 0, &port);
292 if (ret < 0) {
293 pr_err("kstrtoul() failed for port_str: %d\n", ret);
294 return ERR_PTR(ret);
295 }
296 sock_in = (struct sockaddr_in *)&sockaddr;
297 sock_in->sin_family = AF_INET;
298 sock_in->sin_port = htons((unsigned short)port);
299 sock_in->sin_addr.s_addr = in_aton(ip_str);
300 }
301 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
302 ret = iscsit_get_tpg(tpg);
303 if (ret < 0)
304 return ERR_PTR(-EINVAL);
305
306 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
307 " PORTAL: %s\n",
308 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
309 tpg->tpgt, name);
310 /*
311 * Assume ISCSI_TCP by default. Other network portals for other
312 * iSCSI fabrics:
313 *
314 * Traditional iSCSI over SCTP (initial support)
315 * iSER/TCP (TODO, hardware available)
316 * iSER/SCTP (TODO, software emulation with osc-iwarp)
317 * iSER/IB (TODO, hardware available)
318 *
319 * can be enabled with attributes under
320 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
321 *
322 */
323 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
324 ISCSI_TCP);
325 if (IS_ERR(tpg_np)) {
326 iscsit_put_tpg(tpg);
327 return ERR_CAST(tpg_np);
328 }
329 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
330
331 iscsit_put_tpg(tpg);
332 return &tpg_np->se_tpg_np;
333 }
334
335 static void lio_target_call_delnpfromtpg(
336 struct se_tpg_np *se_tpg_np)
337 {
338 struct iscsi_portal_group *tpg;
339 struct iscsi_tpg_np *tpg_np;
340 struct se_portal_group *se_tpg;
341 int ret;
342
343 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
344 tpg = tpg_np->tpg;
345 ret = iscsit_get_tpg(tpg);
346 if (ret < 0)
347 return;
348
349 se_tpg = &tpg->tpg_se_tpg;
350 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
351 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
352 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
353
354 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
355 if (ret < 0)
356 goto out;
357
358 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
359 out:
360 iscsit_put_tpg(tpg);
361 }
362
363 /* End items for lio_target_np_cit */
364
365 /* Start items for lio_target_nacl_attrib_cit */
366
367 #define DEF_NACL_ATTRIB(name) \
368 static ssize_t iscsi_nacl_attrib_show_##name( \
369 struct se_node_acl *se_nacl, \
370 char *page) \
371 { \
372 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
373 se_node_acl); \
374 \
375 return sprintf(page, "%u\n", nacl->node_attrib.name); \
376 } \
377 \
378 static ssize_t iscsi_nacl_attrib_store_##name( \
379 struct se_node_acl *se_nacl, \
380 const char *page, \
381 size_t count) \
382 { \
383 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
384 se_node_acl); \
385 u32 val; \
386 int ret; \
387 \
388 ret = kstrtou32(page, 0, &val); \
389 if (ret) \
390 return ret; \
391 ret = iscsit_na_##name(nacl, val); \
392 if (ret < 0) \
393 return ret; \
394 \
395 return count; \
396 }
397
398 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
399 /*
400 * Define iscsi_node_attrib_s_dataout_timeout
401 */
402 DEF_NACL_ATTRIB(dataout_timeout);
403 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
404 /*
405 * Define iscsi_node_attrib_s_dataout_timeout_retries
406 */
407 DEF_NACL_ATTRIB(dataout_timeout_retries);
408 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
409 /*
410 * Define iscsi_node_attrib_s_default_erl
411 */
412 DEF_NACL_ATTRIB(default_erl);
413 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
414 /*
415 * Define iscsi_node_attrib_s_nopin_timeout
416 */
417 DEF_NACL_ATTRIB(nopin_timeout);
418 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
419 /*
420 * Define iscsi_node_attrib_s_nopin_response_timeout
421 */
422 DEF_NACL_ATTRIB(nopin_response_timeout);
423 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
424 /*
425 * Define iscsi_node_attrib_s_random_datain_pdu_offsets
426 */
427 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
428 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
429 /*
430 * Define iscsi_node_attrib_s_random_datain_seq_offsets
431 */
432 DEF_NACL_ATTRIB(random_datain_seq_offsets);
433 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
434 /*
435 * Define iscsi_node_attrib_s_random_r2t_offsets
436 */
437 DEF_NACL_ATTRIB(random_r2t_offsets);
438 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
439
440 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
441 &iscsi_nacl_attrib_dataout_timeout.attr,
442 &iscsi_nacl_attrib_dataout_timeout_retries.attr,
443 &iscsi_nacl_attrib_default_erl.attr,
444 &iscsi_nacl_attrib_nopin_timeout.attr,
445 &iscsi_nacl_attrib_nopin_response_timeout.attr,
446 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
447 &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
448 &iscsi_nacl_attrib_random_r2t_offsets.attr,
449 NULL,
450 };
451
452 /* End items for lio_target_nacl_attrib_cit */
453
454 /* Start items for lio_target_nacl_auth_cit */
455
456 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \
457 static ssize_t __iscsi_##prefix##_show_##name( \
458 struct iscsi_node_acl *nacl, \
459 char *page) \
460 { \
461 struct iscsi_node_auth *auth = &nacl->node_auth; \
462 \
463 if (!capable(CAP_SYS_ADMIN)) \
464 return -EPERM; \
465 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
466 } \
467 \
468 static ssize_t __iscsi_##prefix##_store_##name( \
469 struct iscsi_node_acl *nacl, \
470 const char *page, \
471 size_t count) \
472 { \
473 struct iscsi_node_auth *auth = &nacl->node_auth; \
474 \
475 if (!capable(CAP_SYS_ADMIN)) \
476 return -EPERM; \
477 if (count >= sizeof(auth->name)) \
478 return -EINVAL; \
479 snprintf(auth->name, sizeof(auth->name), "%s", page); \
480 if (!strncmp("NULL", auth->name, 4)) \
481 auth->naf_flags &= ~flags; \
482 else \
483 auth->naf_flags |= flags; \
484 \
485 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
486 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
487 auth->authenticate_target = 1; \
488 else \
489 auth->authenticate_target = 0; \
490 \
491 return count; \
492 }
493
494 #define __DEF_NACL_AUTH_INT(prefix, name) \
495 static ssize_t __iscsi_##prefix##_show_##name( \
496 struct iscsi_node_acl *nacl, \
497 char *page) \
498 { \
499 struct iscsi_node_auth *auth = &nacl->node_auth; \
500 \
501 if (!capable(CAP_SYS_ADMIN)) \
502 return -EPERM; \
503 \
504 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
505 }
506
507 #define DEF_NACL_AUTH_STR(name, flags) \
508 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
509 static ssize_t iscsi_nacl_auth_show_##name( \
510 struct se_node_acl *nacl, \
511 char *page) \
512 { \
513 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
514 struct iscsi_node_acl, se_node_acl), page); \
515 } \
516 static ssize_t iscsi_nacl_auth_store_##name( \
517 struct se_node_acl *nacl, \
518 const char *page, \
519 size_t count) \
520 { \
521 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
522 struct iscsi_node_acl, se_node_acl), page, count); \
523 }
524
525 #define DEF_NACL_AUTH_INT(name) \
526 __DEF_NACL_AUTH_INT(nacl_auth, name) \
527 static ssize_t iscsi_nacl_auth_show_##name( \
528 struct se_node_acl *nacl, \
529 char *page) \
530 { \
531 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
532 struct iscsi_node_acl, se_node_acl), page); \
533 }
534
535 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
536 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
537
538 /*
539 * One-way authentication userid
540 */
541 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
542 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
543 /*
544 * One-way authentication password
545 */
546 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
547 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
548 /*
549 * Enforce mutual authentication
550 */
551 DEF_NACL_AUTH_INT(authenticate_target);
552 AUTH_ATTR_RO(authenticate_target);
553 /*
554 * Mutual authentication userid
555 */
556 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
557 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
558 /*
559 * Mutual authentication password
560 */
561 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
562 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
563
564 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
565 &iscsi_nacl_auth_userid.attr,
566 &iscsi_nacl_auth_password.attr,
567 &iscsi_nacl_auth_authenticate_target.attr,
568 &iscsi_nacl_auth_userid_mutual.attr,
569 &iscsi_nacl_auth_password_mutual.attr,
570 NULL,
571 };
572
573 /* End items for lio_target_nacl_auth_cit */
574
575 /* Start items for lio_target_nacl_param_cit */
576
577 #define DEF_NACL_PARAM(name) \
578 static ssize_t iscsi_nacl_param_show_##name( \
579 struct se_node_acl *se_nacl, \
580 char *page) \
581 { \
582 struct iscsi_session *sess; \
583 struct se_session *se_sess; \
584 ssize_t rb; \
585 \
586 spin_lock_bh(&se_nacl->nacl_sess_lock); \
587 se_sess = se_nacl->nacl_sess; \
588 if (!se_sess) { \
589 rb = snprintf(page, PAGE_SIZE, \
590 "No Active iSCSI Session\n"); \
591 } else { \
592 sess = se_sess->fabric_sess_ptr; \
593 rb = snprintf(page, PAGE_SIZE, "%u\n", \
594 (u32)sess->sess_ops->name); \
595 } \
596 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
597 \
598 return rb; \
599 }
600
601 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
602
603 DEF_NACL_PARAM(MaxConnections);
604 NACL_PARAM_ATTR(MaxConnections);
605
606 DEF_NACL_PARAM(InitialR2T);
607 NACL_PARAM_ATTR(InitialR2T);
608
609 DEF_NACL_PARAM(ImmediateData);
610 NACL_PARAM_ATTR(ImmediateData);
611
612 DEF_NACL_PARAM(MaxBurstLength);
613 NACL_PARAM_ATTR(MaxBurstLength);
614
615 DEF_NACL_PARAM(FirstBurstLength);
616 NACL_PARAM_ATTR(FirstBurstLength);
617
618 DEF_NACL_PARAM(DefaultTime2Wait);
619 NACL_PARAM_ATTR(DefaultTime2Wait);
620
621 DEF_NACL_PARAM(DefaultTime2Retain);
622 NACL_PARAM_ATTR(DefaultTime2Retain);
623
624 DEF_NACL_PARAM(MaxOutstandingR2T);
625 NACL_PARAM_ATTR(MaxOutstandingR2T);
626
627 DEF_NACL_PARAM(DataPDUInOrder);
628 NACL_PARAM_ATTR(DataPDUInOrder);
629
630 DEF_NACL_PARAM(DataSequenceInOrder);
631 NACL_PARAM_ATTR(DataSequenceInOrder);
632
633 DEF_NACL_PARAM(ErrorRecoveryLevel);
634 NACL_PARAM_ATTR(ErrorRecoveryLevel);
635
636 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
637 &iscsi_nacl_param_MaxConnections.attr,
638 &iscsi_nacl_param_InitialR2T.attr,
639 &iscsi_nacl_param_ImmediateData.attr,
640 &iscsi_nacl_param_MaxBurstLength.attr,
641 &iscsi_nacl_param_FirstBurstLength.attr,
642 &iscsi_nacl_param_DefaultTime2Wait.attr,
643 &iscsi_nacl_param_DefaultTime2Retain.attr,
644 &iscsi_nacl_param_MaxOutstandingR2T.attr,
645 &iscsi_nacl_param_DataPDUInOrder.attr,
646 &iscsi_nacl_param_DataSequenceInOrder.attr,
647 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
648 NULL,
649 };
650
651 /* End items for lio_target_nacl_param_cit */
652
653 /* Start items for lio_target_acl_cit */
654
655 static ssize_t lio_target_nacl_show_info(
656 struct se_node_acl *se_nacl,
657 char *page)
658 {
659 struct iscsi_session *sess;
660 struct iscsi_conn *conn;
661 struct se_session *se_sess;
662 ssize_t rb = 0;
663
664 spin_lock_bh(&se_nacl->nacl_sess_lock);
665 se_sess = se_nacl->nacl_sess;
666 if (!se_sess) {
667 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
668 " Endpoint: %s\n", se_nacl->initiatorname);
669 } else {
670 sess = se_sess->fabric_sess_ptr;
671
672 rb += sprintf(page+rb, "InitiatorName: %s\n",
673 sess->sess_ops->InitiatorName);
674 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
675 sess->sess_ops->InitiatorAlias);
676
677 rb += sprintf(page+rb, "LIO Session ID: %u "
678 "ISID: 0x%02x %02x %02x %02x %02x %02x "
679 "TSIH: %hu ", sess->sid,
680 sess->isid[0], sess->isid[1], sess->isid[2],
681 sess->isid[3], sess->isid[4], sess->isid[5],
682 sess->tsih);
683 rb += sprintf(page+rb, "SessionType: %s\n",
684 (sess->sess_ops->SessionType) ?
685 "Discovery" : "Normal");
686 rb += sprintf(page+rb, "Session State: ");
687 switch (sess->session_state) {
688 case TARG_SESS_STATE_FREE:
689 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
690 break;
691 case TARG_SESS_STATE_ACTIVE:
692 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
693 break;
694 case TARG_SESS_STATE_LOGGED_IN:
695 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
696 break;
697 case TARG_SESS_STATE_FAILED:
698 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
699 break;
700 case TARG_SESS_STATE_IN_CONTINUE:
701 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
702 break;
703 default:
704 rb += sprintf(page+rb, "ERROR: Unknown Session"
705 " State!\n");
706 break;
707 }
708
709 rb += sprintf(page+rb, "---------------------[iSCSI Session"
710 " Values]-----------------------\n");
711 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
712 " : MaxCmdSN : ITT : TTT\n");
713 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
714 " 0x%08x 0x%08x\n",
715 sess->cmdsn_window,
716 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
717 sess->exp_cmd_sn, sess->max_cmd_sn,
718 sess->init_task_tag, sess->targ_xfer_tag);
719 rb += sprintf(page+rb, "----------------------[iSCSI"
720 " Connections]-------------------------\n");
721
722 spin_lock(&sess->conn_lock);
723 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
724 rb += sprintf(page+rb, "CID: %hu Connection"
725 " State: ", conn->cid);
726 switch (conn->conn_state) {
727 case TARG_CONN_STATE_FREE:
728 rb += sprintf(page+rb,
729 "TARG_CONN_STATE_FREE\n");
730 break;
731 case TARG_CONN_STATE_XPT_UP:
732 rb += sprintf(page+rb,
733 "TARG_CONN_STATE_XPT_UP\n");
734 break;
735 case TARG_CONN_STATE_IN_LOGIN:
736 rb += sprintf(page+rb,
737 "TARG_CONN_STATE_IN_LOGIN\n");
738 break;
739 case TARG_CONN_STATE_LOGGED_IN:
740 rb += sprintf(page+rb,
741 "TARG_CONN_STATE_LOGGED_IN\n");
742 break;
743 case TARG_CONN_STATE_IN_LOGOUT:
744 rb += sprintf(page+rb,
745 "TARG_CONN_STATE_IN_LOGOUT\n");
746 break;
747 case TARG_CONN_STATE_LOGOUT_REQUESTED:
748 rb += sprintf(page+rb,
749 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
750 break;
751 case TARG_CONN_STATE_CLEANUP_WAIT:
752 rb += sprintf(page+rb,
753 "TARG_CONN_STATE_CLEANUP_WAIT\n");
754 break;
755 default:
756 rb += sprintf(page+rb,
757 "ERROR: Unknown Connection State!\n");
758 break;
759 }
760
761 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
762 (conn->network_transport == ISCSI_TCP) ?
763 "TCP" : "SCTP");
764 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
765 conn->stat_sn);
766 }
767 spin_unlock(&sess->conn_lock);
768 }
769 spin_unlock_bh(&se_nacl->nacl_sess_lock);
770
771 return rb;
772 }
773
774 TF_NACL_BASE_ATTR_RO(lio_target, info);
775
776 static ssize_t lio_target_nacl_show_cmdsn_depth(
777 struct se_node_acl *se_nacl,
778 char *page)
779 {
780 return sprintf(page, "%u\n", se_nacl->queue_depth);
781 }
782
783 static ssize_t lio_target_nacl_store_cmdsn_depth(
784 struct se_node_acl *se_nacl,
785 const char *page,
786 size_t count)
787 {
788 struct se_portal_group *se_tpg = se_nacl->se_tpg;
789 struct iscsi_portal_group *tpg = container_of(se_tpg,
790 struct iscsi_portal_group, tpg_se_tpg);
791 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
792 u32 cmdsn_depth = 0;
793 int ret;
794
795 ret = kstrtou32(page, 0, &cmdsn_depth);
796 if (ret)
797 return ret;
798 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
799 pr_err("Passed cmdsn_depth: %u exceeds"
800 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
801 TA_DEFAULT_CMDSN_DEPTH_MAX);
802 return -EINVAL;
803 }
804 acl_ci = &se_nacl->acl_group.cg_item;
805 if (!acl_ci) {
806 pr_err("Unable to locatel acl_ci\n");
807 return -EINVAL;
808 }
809 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
810 if (!tpg_ci) {
811 pr_err("Unable to locate tpg_ci\n");
812 return -EINVAL;
813 }
814 wwn_ci = &tpg_ci->ci_group->cg_item;
815 if (!wwn_ci) {
816 pr_err("Unable to locate config_item wwn_ci\n");
817 return -EINVAL;
818 }
819
820 if (iscsit_get_tpg(tpg) < 0)
821 return -EINVAL;
822 /*
823 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
824 */
825 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
826 config_item_name(acl_ci), cmdsn_depth, 1);
827
828 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
829 "InitiatorName: %s\n", config_item_name(wwn_ci),
830 config_item_name(tpg_ci), cmdsn_depth,
831 config_item_name(acl_ci));
832
833 iscsit_put_tpg(tpg);
834 return (!ret) ? count : (ssize_t)ret;
835 }
836
837 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
838
839 static ssize_t lio_target_nacl_show_tag(
840 struct se_node_acl *se_nacl,
841 char *page)
842 {
843 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
844 }
845
846 static ssize_t lio_target_nacl_store_tag(
847 struct se_node_acl *se_nacl,
848 const char *page,
849 size_t count)
850 {
851 int ret;
852
853 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
854
855 if (ret < 0)
856 return ret;
857 return count;
858 }
859
860 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
861
862 static struct configfs_attribute *lio_target_initiator_attrs[] = {
863 &lio_target_nacl_info.attr,
864 &lio_target_nacl_cmdsn_depth.attr,
865 &lio_target_nacl_tag.attr,
866 NULL,
867 };
868
869 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
870 struct se_portal_group *se_tpg)
871 {
872 struct iscsi_node_acl *acl;
873
874 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
875 if (!acl) {
876 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
877 return NULL;
878 }
879
880 return &acl->se_node_acl;
881 }
882
883 static struct se_node_acl *lio_target_make_nodeacl(
884 struct se_portal_group *se_tpg,
885 struct config_group *group,
886 const char *name)
887 {
888 struct config_group *stats_cg;
889 struct iscsi_node_acl *acl;
890 struct se_node_acl *se_nacl_new, *se_nacl;
891 struct iscsi_portal_group *tpg = container_of(se_tpg,
892 struct iscsi_portal_group, tpg_se_tpg);
893 u32 cmdsn_depth;
894
895 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
896 if (!se_nacl_new)
897 return ERR_PTR(-ENOMEM);
898
899 cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
900 /*
901 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
902 * when converting a NdoeACL from demo mode -> explict
903 */
904 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
905 name, cmdsn_depth);
906 if (IS_ERR(se_nacl))
907 return se_nacl;
908
909 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
910 stats_cg = &se_nacl->acl_fabric_stat_group;
911
912 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
913 GFP_KERNEL);
914 if (!stats_cg->default_groups) {
915 pr_err("Unable to allocate memory for"
916 " stats_cg->default_groups\n");
917 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
918 kfree(acl);
919 return ERR_PTR(-ENOMEM);
920 }
921
922 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
923 stats_cg->default_groups[1] = NULL;
924 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
925 "iscsi_sess_stats", &iscsi_stat_sess_cit);
926
927 return se_nacl;
928 }
929
930 static void lio_target_drop_nodeacl(
931 struct se_node_acl *se_nacl)
932 {
933 struct se_portal_group *se_tpg = se_nacl->se_tpg;
934 struct iscsi_node_acl *acl = container_of(se_nacl,
935 struct iscsi_node_acl, se_node_acl);
936 struct config_item *df_item;
937 struct config_group *stats_cg;
938 int i;
939
940 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
941 for (i = 0; stats_cg->default_groups[i]; i++) {
942 df_item = &stats_cg->default_groups[i]->cg_item;
943 stats_cg->default_groups[i] = NULL;
944 config_item_put(df_item);
945 }
946 kfree(stats_cg->default_groups);
947
948 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
949 kfree(acl);
950 }
951
952 /* End items for lio_target_acl_cit */
953
954 /* Start items for lio_target_tpg_attrib_cit */
955
956 #define DEF_TPG_ATTRIB(name) \
957 \
958 static ssize_t iscsi_tpg_attrib_show_##name( \
959 struct se_portal_group *se_tpg, \
960 char *page) \
961 { \
962 struct iscsi_portal_group *tpg = container_of(se_tpg, \
963 struct iscsi_portal_group, tpg_se_tpg); \
964 ssize_t rb; \
965 \
966 if (iscsit_get_tpg(tpg) < 0) \
967 return -EINVAL; \
968 \
969 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
970 iscsit_put_tpg(tpg); \
971 return rb; \
972 } \
973 \
974 static ssize_t iscsi_tpg_attrib_store_##name( \
975 struct se_portal_group *se_tpg, \
976 const char *page, \
977 size_t count) \
978 { \
979 struct iscsi_portal_group *tpg = container_of(se_tpg, \
980 struct iscsi_portal_group, tpg_se_tpg); \
981 u32 val; \
982 int ret; \
983 \
984 if (iscsit_get_tpg(tpg) < 0) \
985 return -EINVAL; \
986 \
987 ret = kstrtou32(page, 0, &val); \
988 if (ret) \
989 goto out; \
990 ret = iscsit_ta_##name(tpg, val); \
991 if (ret < 0) \
992 goto out; \
993 \
994 iscsit_put_tpg(tpg); \
995 return count; \
996 out: \
997 iscsit_put_tpg(tpg); \
998 return ret; \
999 }
1000
1001 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1002
1003 /*
1004 * Define iscsi_tpg_attrib_s_authentication
1005 */
1006 DEF_TPG_ATTRIB(authentication);
1007 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1008 /*
1009 * Define iscsi_tpg_attrib_s_login_timeout
1010 */
1011 DEF_TPG_ATTRIB(login_timeout);
1012 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1013 /*
1014 * Define iscsi_tpg_attrib_s_netif_timeout
1015 */
1016 DEF_TPG_ATTRIB(netif_timeout);
1017 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1018 /*
1019 * Define iscsi_tpg_attrib_s_generate_node_acls
1020 */
1021 DEF_TPG_ATTRIB(generate_node_acls);
1022 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1023 /*
1024 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1025 */
1026 DEF_TPG_ATTRIB(default_cmdsn_depth);
1027 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1028 /*
1029 Define iscsi_tpg_attrib_s_cache_dynamic_acls
1030 */
1031 DEF_TPG_ATTRIB(cache_dynamic_acls);
1032 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1033 /*
1034 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1035 */
1036 DEF_TPG_ATTRIB(demo_mode_write_protect);
1037 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1038 /*
1039 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1040 */
1041 DEF_TPG_ATTRIB(prod_mode_write_protect);
1042 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1043 /*
1044 * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1045 */
1046 DEF_TPG_ATTRIB(demo_mode_discovery);
1047 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1048 /*
1049 * Define iscsi_tpg_attrib_s_default_erl
1050 */
1051 DEF_TPG_ATTRIB(default_erl);
1052 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1053 /*
1054 * Define iscsi_tpg_attrib_s_t10_pi
1055 */
1056 DEF_TPG_ATTRIB(t10_pi);
1057 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1058
1059 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1060 &iscsi_tpg_attrib_authentication.attr,
1061 &iscsi_tpg_attrib_login_timeout.attr,
1062 &iscsi_tpg_attrib_netif_timeout.attr,
1063 &iscsi_tpg_attrib_generate_node_acls.attr,
1064 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1065 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1066 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1067 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1068 &iscsi_tpg_attrib_demo_mode_discovery.attr,
1069 &iscsi_tpg_attrib_default_erl.attr,
1070 &iscsi_tpg_attrib_t10_pi.attr,
1071 NULL,
1072 };
1073
1074 /* End items for lio_target_tpg_attrib_cit */
1075
1076 /* Start items for lio_target_tpg_auth_cit */
1077
1078 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
1079 static ssize_t __iscsi_##prefix##_show_##name( \
1080 struct se_portal_group *se_tpg, \
1081 char *page) \
1082 { \
1083 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1084 struct iscsi_portal_group, tpg_se_tpg); \
1085 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1086 \
1087 if (!capable(CAP_SYS_ADMIN)) \
1088 return -EPERM; \
1089 \
1090 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
1091 } \
1092 \
1093 static ssize_t __iscsi_##prefix##_store_##name( \
1094 struct se_portal_group *se_tpg, \
1095 const char *page, \
1096 size_t count) \
1097 { \
1098 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1099 struct iscsi_portal_group, tpg_se_tpg); \
1100 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1101 \
1102 if (!capable(CAP_SYS_ADMIN)) \
1103 return -EPERM; \
1104 \
1105 snprintf(auth->name, sizeof(auth->name), "%s", page); \
1106 if (!(strncmp("NULL", auth->name, 4))) \
1107 auth->naf_flags &= ~flags; \
1108 else \
1109 auth->naf_flags |= flags; \
1110 \
1111 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
1112 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
1113 auth->authenticate_target = 1; \
1114 else \
1115 auth->authenticate_target = 0; \
1116 \
1117 return count; \
1118 }
1119
1120 #define __DEF_TPG_AUTH_INT(prefix, name) \
1121 static ssize_t __iscsi_##prefix##_show_##name( \
1122 struct se_portal_group *se_tpg, \
1123 char *page) \
1124 { \
1125 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1126 struct iscsi_portal_group, tpg_se_tpg); \
1127 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1128 \
1129 if (!capable(CAP_SYS_ADMIN)) \
1130 return -EPERM; \
1131 \
1132 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
1133 }
1134
1135 #define DEF_TPG_AUTH_STR(name, flags) \
1136 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
1137 static ssize_t iscsi_tpg_auth_show_##name( \
1138 struct se_portal_group *se_tpg, \
1139 char *page) \
1140 { \
1141 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1142 } \
1143 \
1144 static ssize_t iscsi_tpg_auth_store_##name( \
1145 struct se_portal_group *se_tpg, \
1146 const char *page, \
1147 size_t count) \
1148 { \
1149 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \
1150 }
1151
1152 #define DEF_TPG_AUTH_INT(name) \
1153 __DEF_TPG_AUTH_INT(tpg_auth, name) \
1154 static ssize_t iscsi_tpg_auth_show_##name( \
1155 struct se_portal_group *se_tpg, \
1156 char *page) \
1157 { \
1158 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1159 }
1160
1161 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1162 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1163
1164 /*
1165 * * One-way authentication userid
1166 * */
1167 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1168 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1169 /*
1170 * * One-way authentication password
1171 * */
1172 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1173 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1174 /*
1175 * * Enforce mutual authentication
1176 * */
1177 DEF_TPG_AUTH_INT(authenticate_target);
1178 TPG_AUTH_ATTR_RO(authenticate_target);
1179 /*
1180 * * Mutual authentication userid
1181 * */
1182 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1183 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1184 /*
1185 * * Mutual authentication password
1186 * */
1187 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1188 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1189
1190 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1191 &iscsi_tpg_auth_userid.attr,
1192 &iscsi_tpg_auth_password.attr,
1193 &iscsi_tpg_auth_authenticate_target.attr,
1194 &iscsi_tpg_auth_userid_mutual.attr,
1195 &iscsi_tpg_auth_password_mutual.attr,
1196 NULL,
1197 };
1198
1199 /* End items for lio_target_tpg_auth_cit */
1200
1201 /* Start items for lio_target_tpg_param_cit */
1202
1203 #define DEF_TPG_PARAM(name) \
1204 static ssize_t iscsi_tpg_param_show_##name( \
1205 struct se_portal_group *se_tpg, \
1206 char *page) \
1207 { \
1208 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1209 struct iscsi_portal_group, tpg_se_tpg); \
1210 struct iscsi_param *param; \
1211 ssize_t rb; \
1212 \
1213 if (iscsit_get_tpg(tpg) < 0) \
1214 return -EINVAL; \
1215 \
1216 param = iscsi_find_param_from_key(__stringify(name), \
1217 tpg->param_list); \
1218 if (!param) { \
1219 iscsit_put_tpg(tpg); \
1220 return -EINVAL; \
1221 } \
1222 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1223 \
1224 iscsit_put_tpg(tpg); \
1225 return rb; \
1226 } \
1227 static ssize_t iscsi_tpg_param_store_##name( \
1228 struct se_portal_group *se_tpg, \
1229 const char *page, \
1230 size_t count) \
1231 { \
1232 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1233 struct iscsi_portal_group, tpg_se_tpg); \
1234 char *buf; \
1235 int ret, len; \
1236 \
1237 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1238 if (!buf) \
1239 return -ENOMEM; \
1240 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1241 if (isspace(buf[len-1])) \
1242 buf[len-1] = '\0'; /* Kill newline */ \
1243 \
1244 if (iscsit_get_tpg(tpg) < 0) { \
1245 kfree(buf); \
1246 return -EINVAL; \
1247 } \
1248 \
1249 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1250 if (ret < 0) \
1251 goto out; \
1252 \
1253 kfree(buf); \
1254 iscsit_put_tpg(tpg); \
1255 return count; \
1256 out: \
1257 kfree(buf); \
1258 iscsit_put_tpg(tpg); \
1259 return -EINVAL; \
1260 }
1261
1262 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1263
1264 DEF_TPG_PARAM(AuthMethod);
1265 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1266
1267 DEF_TPG_PARAM(HeaderDigest);
1268 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1269
1270 DEF_TPG_PARAM(DataDigest);
1271 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1272
1273 DEF_TPG_PARAM(MaxConnections);
1274 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1275
1276 DEF_TPG_PARAM(TargetAlias);
1277 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1278
1279 DEF_TPG_PARAM(InitialR2T);
1280 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1281
1282 DEF_TPG_PARAM(ImmediateData);
1283 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1284
1285 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1286 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1287
1288 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1289 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1290
1291 DEF_TPG_PARAM(MaxBurstLength);
1292 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1293
1294 DEF_TPG_PARAM(FirstBurstLength);
1295 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1296
1297 DEF_TPG_PARAM(DefaultTime2Wait);
1298 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1299
1300 DEF_TPG_PARAM(DefaultTime2Retain);
1301 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1302
1303 DEF_TPG_PARAM(MaxOutstandingR2T);
1304 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1305
1306 DEF_TPG_PARAM(DataPDUInOrder);
1307 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1308
1309 DEF_TPG_PARAM(DataSequenceInOrder);
1310 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1311
1312 DEF_TPG_PARAM(ErrorRecoveryLevel);
1313 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1314
1315 DEF_TPG_PARAM(IFMarker);
1316 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1317
1318 DEF_TPG_PARAM(OFMarker);
1319 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1320
1321 DEF_TPG_PARAM(IFMarkInt);
1322 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1323
1324 DEF_TPG_PARAM(OFMarkInt);
1325 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1326
1327 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1328 &iscsi_tpg_param_AuthMethod.attr,
1329 &iscsi_tpg_param_HeaderDigest.attr,
1330 &iscsi_tpg_param_DataDigest.attr,
1331 &iscsi_tpg_param_MaxConnections.attr,
1332 &iscsi_tpg_param_TargetAlias.attr,
1333 &iscsi_tpg_param_InitialR2T.attr,
1334 &iscsi_tpg_param_ImmediateData.attr,
1335 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1336 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1337 &iscsi_tpg_param_MaxBurstLength.attr,
1338 &iscsi_tpg_param_FirstBurstLength.attr,
1339 &iscsi_tpg_param_DefaultTime2Wait.attr,
1340 &iscsi_tpg_param_DefaultTime2Retain.attr,
1341 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1342 &iscsi_tpg_param_DataPDUInOrder.attr,
1343 &iscsi_tpg_param_DataSequenceInOrder.attr,
1344 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1345 &iscsi_tpg_param_IFMarker.attr,
1346 &iscsi_tpg_param_OFMarker.attr,
1347 &iscsi_tpg_param_IFMarkInt.attr,
1348 &iscsi_tpg_param_OFMarkInt.attr,
1349 NULL,
1350 };
1351
1352 /* End items for lio_target_tpg_param_cit */
1353
1354 /* Start items for lio_target_tpg_cit */
1355
1356 static ssize_t lio_target_tpg_show_enable(
1357 struct se_portal_group *se_tpg,
1358 char *page)
1359 {
1360 struct iscsi_portal_group *tpg = container_of(se_tpg,
1361 struct iscsi_portal_group, tpg_se_tpg);
1362 ssize_t len;
1363
1364 spin_lock(&tpg->tpg_state_lock);
1365 len = sprintf(page, "%d\n",
1366 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1367 spin_unlock(&tpg->tpg_state_lock);
1368
1369 return len;
1370 }
1371
1372 static ssize_t lio_target_tpg_store_enable(
1373 struct se_portal_group *se_tpg,
1374 const char *page,
1375 size_t count)
1376 {
1377 struct iscsi_portal_group *tpg = container_of(se_tpg,
1378 struct iscsi_portal_group, tpg_se_tpg);
1379 u32 op;
1380 int ret;
1381
1382 ret = kstrtou32(page, 0, &op);
1383 if (ret)
1384 return ret;
1385 if ((op != 1) && (op != 0)) {
1386 pr_err("Illegal value for tpg_enable: %u\n", op);
1387 return -EINVAL;
1388 }
1389
1390 ret = iscsit_get_tpg(tpg);
1391 if (ret < 0)
1392 return -EINVAL;
1393
1394 if (op) {
1395 ret = iscsit_tpg_enable_portal_group(tpg);
1396 if (ret < 0)
1397 goto out;
1398 } else {
1399 /*
1400 * iscsit_tpg_disable_portal_group() assumes force=1
1401 */
1402 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1403 if (ret < 0)
1404 goto out;
1405 }
1406
1407 iscsit_put_tpg(tpg);
1408 return count;
1409 out:
1410 iscsit_put_tpg(tpg);
1411 return -EINVAL;
1412 }
1413
1414 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1415
1416 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1417 &lio_target_tpg_enable.attr,
1418 NULL,
1419 };
1420
1421 /* End items for lio_target_tpg_cit */
1422
1423 /* Start items for lio_target_tiqn_cit */
1424
1425 static struct se_portal_group *lio_target_tiqn_addtpg(
1426 struct se_wwn *wwn,
1427 struct config_group *group,
1428 const char *name)
1429 {
1430 struct iscsi_portal_group *tpg;
1431 struct iscsi_tiqn *tiqn;
1432 char *tpgt_str;
1433 int ret;
1434 u16 tpgt;
1435
1436 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1437 /*
1438 * Only tpgt_# directory groups can be created below
1439 * target/iscsi/iqn.superturodiskarry/
1440 */
1441 tpgt_str = strstr(name, "tpgt_");
1442 if (!tpgt_str) {
1443 pr_err("Unable to locate \"tpgt_#\" directory"
1444 " group\n");
1445 return NULL;
1446 }
1447 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1448 ret = kstrtou16(tpgt_str, 0, &tpgt);
1449 if (ret)
1450 return NULL;
1451
1452 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1453 if (!tpg)
1454 return NULL;
1455
1456 ret = core_tpg_register(
1457 &lio_target_fabric_configfs->tf_ops,
1458 wwn, &tpg->tpg_se_tpg, tpg,
1459 TRANSPORT_TPG_TYPE_NORMAL);
1460 if (ret < 0)
1461 return NULL;
1462
1463 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1464 if (ret != 0)
1465 goto out;
1466
1467 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1468 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1469 name);
1470 return &tpg->tpg_se_tpg;
1471 out:
1472 core_tpg_deregister(&tpg->tpg_se_tpg);
1473 kfree(tpg);
1474 return NULL;
1475 }
1476
1477 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1478 {
1479 struct iscsi_portal_group *tpg;
1480 struct iscsi_tiqn *tiqn;
1481
1482 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1483 tiqn = tpg->tpg_tiqn;
1484 /*
1485 * iscsit_tpg_del_portal_group() assumes force=1
1486 */
1487 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1488 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1489 }
1490
1491 /* End items for lio_target_tiqn_cit */
1492
1493 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1494
1495 static ssize_t lio_target_wwn_show_attr_lio_version(
1496 struct target_fabric_configfs *tf,
1497 char *page)
1498 {
1499 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1500 }
1501
1502 TF_WWN_ATTR_RO(lio_target, lio_version);
1503
1504 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1505 &lio_target_wwn_lio_version.attr,
1506 NULL,
1507 };
1508
1509 static struct se_wwn *lio_target_call_coreaddtiqn(
1510 struct target_fabric_configfs *tf,
1511 struct config_group *group,
1512 const char *name)
1513 {
1514 struct config_group *stats_cg;
1515 struct iscsi_tiqn *tiqn;
1516
1517 tiqn = iscsit_add_tiqn((unsigned char *)name);
1518 if (IS_ERR(tiqn))
1519 return ERR_CAST(tiqn);
1520 /*
1521 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1522 */
1523 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1524
1525 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1526 GFP_KERNEL);
1527 if (!stats_cg->default_groups) {
1528 pr_err("Unable to allocate memory for"
1529 " stats_cg->default_groups\n");
1530 iscsit_del_tiqn(tiqn);
1531 return ERR_PTR(-ENOMEM);
1532 }
1533
1534 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1535 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1536 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1537 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1538 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1539 stats_cg->default_groups[5] = NULL;
1540 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1541 "iscsi_instance", &iscsi_stat_instance_cit);
1542 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1543 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1544 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1545 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1546 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1547 "iscsi_login_stats", &iscsi_stat_login_cit);
1548 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1549 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1550
1551 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1552 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1553 " %s\n", name);
1554 return &tiqn->tiqn_wwn;
1555 }
1556
1557 static void lio_target_call_coredeltiqn(
1558 struct se_wwn *wwn)
1559 {
1560 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1561 struct config_item *df_item;
1562 struct config_group *stats_cg;
1563 int i;
1564
1565 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1566 for (i = 0; stats_cg->default_groups[i]; i++) {
1567 df_item = &stats_cg->default_groups[i]->cg_item;
1568 stats_cg->default_groups[i] = NULL;
1569 config_item_put(df_item);
1570 }
1571 kfree(stats_cg->default_groups);
1572
1573 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1574 tiqn->tiqn);
1575 iscsit_del_tiqn(tiqn);
1576 }
1577
1578 /* End LIO-Target TIQN struct contig_lio_target_cit */
1579
1580 /* Start lio_target_discovery_auth_cit */
1581
1582 #define DEF_DISC_AUTH_STR(name, flags) \
1583 __DEF_NACL_AUTH_STR(disc, name, flags) \
1584 static ssize_t iscsi_disc_show_##name( \
1585 struct target_fabric_configfs *tf, \
1586 char *page) \
1587 { \
1588 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1589 page); \
1590 } \
1591 static ssize_t iscsi_disc_store_##name( \
1592 struct target_fabric_configfs *tf, \
1593 const char *page, \
1594 size_t count) \
1595 { \
1596 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1597 page, count); \
1598 }
1599
1600 #define DEF_DISC_AUTH_INT(name) \
1601 __DEF_NACL_AUTH_INT(disc, name) \
1602 static ssize_t iscsi_disc_show_##name( \
1603 struct target_fabric_configfs *tf, \
1604 char *page) \
1605 { \
1606 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1607 page); \
1608 }
1609
1610 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1611 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1612
1613 /*
1614 * One-way authentication userid
1615 */
1616 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1617 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1618 /*
1619 * One-way authentication password
1620 */
1621 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1622 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1623 /*
1624 * Enforce mutual authentication
1625 */
1626 DEF_DISC_AUTH_INT(authenticate_target);
1627 DISC_AUTH_ATTR_RO(authenticate_target);
1628 /*
1629 * Mutual authentication userid
1630 */
1631 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1632 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1633 /*
1634 * Mutual authentication password
1635 */
1636 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1637 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1638
1639 /*
1640 * enforce_discovery_auth
1641 */
1642 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1643 struct target_fabric_configfs *tf,
1644 char *page)
1645 {
1646 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1647
1648 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1649 }
1650
1651 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1652 struct target_fabric_configfs *tf,
1653 const char *page,
1654 size_t count)
1655 {
1656 struct iscsi_param *param;
1657 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1658 u32 op;
1659 int err;
1660
1661 err = kstrtou32(page, 0, &op);
1662 if (err)
1663 return -EINVAL;
1664 if ((op != 1) && (op != 0)) {
1665 pr_err("Illegal value for enforce_discovery_auth:"
1666 " %u\n", op);
1667 return -EINVAL;
1668 }
1669
1670 if (!discovery_tpg) {
1671 pr_err("iscsit_global->discovery_tpg is NULL\n");
1672 return -EINVAL;
1673 }
1674
1675 param = iscsi_find_param_from_key(AUTHMETHOD,
1676 discovery_tpg->param_list);
1677 if (!param)
1678 return -EINVAL;
1679
1680 if (op) {
1681 /*
1682 * Reset the AuthMethod key to CHAP.
1683 */
1684 if (iscsi_update_param_value(param, CHAP) < 0)
1685 return -EINVAL;
1686
1687 discovery_tpg->tpg_attrib.authentication = 1;
1688 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1689 pr_debug("LIO-CORE[0] Successfully enabled"
1690 " authentication enforcement for iSCSI"
1691 " Discovery TPG\n");
1692 } else {
1693 /*
1694 * Reset the AuthMethod key to CHAP,None
1695 */
1696 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1697 return -EINVAL;
1698
1699 discovery_tpg->tpg_attrib.authentication = 0;
1700 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1701 pr_debug("LIO-CORE[0] Successfully disabled"
1702 " authentication enforcement for iSCSI"
1703 " Discovery TPG\n");
1704 }
1705
1706 return count;
1707 }
1708
1709 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1710
1711 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1712 &iscsi_disc_userid.attr,
1713 &iscsi_disc_password.attr,
1714 &iscsi_disc_authenticate_target.attr,
1715 &iscsi_disc_userid_mutual.attr,
1716 &iscsi_disc_password_mutual.attr,
1717 &iscsi_disc_enforce_discovery_auth.attr,
1718 NULL,
1719 };
1720
1721 /* End lio_target_discovery_auth_cit */
1722
1723 /* Start functions for target_core_fabric_ops */
1724
1725 static char *iscsi_get_fabric_name(void)
1726 {
1727 return "iSCSI";
1728 }
1729
1730 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1731 {
1732 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1733
1734 /* only used for printks or comparism with ->ref_task_tag */
1735 return (__force u32)cmd->init_task_tag;
1736 }
1737
1738 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1739 {
1740 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1741
1742 return cmd->i_state;
1743 }
1744
1745 static u32 lio_sess_get_index(struct se_session *se_sess)
1746 {
1747 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1748
1749 return sess->session_index;
1750 }
1751
1752 static u32 lio_sess_get_initiator_sid(
1753 struct se_session *se_sess,
1754 unsigned char *buf,
1755 u32 size)
1756 {
1757 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1758 /*
1759 * iSCSI Initiator Session Identifier from RFC-3720.
1760 */
1761 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1762 sess->isid[0], sess->isid[1], sess->isid[2],
1763 sess->isid[3], sess->isid[4], sess->isid[5]);
1764 }
1765
1766 static int lio_queue_data_in(struct se_cmd *se_cmd)
1767 {
1768 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1769
1770 cmd->i_state = ISTATE_SEND_DATAIN;
1771 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1772
1773 return 0;
1774 }
1775
1776 static int lio_write_pending(struct se_cmd *se_cmd)
1777 {
1778 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1779 struct iscsi_conn *conn = cmd->conn;
1780
1781 if (!cmd->immediate_data && !cmd->unsolicited_data)
1782 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1783
1784 return 0;
1785 }
1786
1787 static int lio_write_pending_status(struct se_cmd *se_cmd)
1788 {
1789 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1790 int ret;
1791
1792 spin_lock_bh(&cmd->istate_lock);
1793 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1794 spin_unlock_bh(&cmd->istate_lock);
1795
1796 return ret;
1797 }
1798
1799 static int lio_queue_status(struct se_cmd *se_cmd)
1800 {
1801 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1802
1803 cmd->i_state = ISTATE_SEND_STATUS;
1804
1805 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1806 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1807 return 0;
1808 }
1809 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1810
1811 return 0;
1812 }
1813
1814 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1815 {
1816 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1817
1818 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1819 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1820 }
1821
1822 static void lio_aborted_task(struct se_cmd *se_cmd)
1823 {
1824 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1825
1826 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1827 }
1828
1829 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1830 {
1831 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1832
1833 return &tpg->tpg_tiqn->tiqn[0];
1834 }
1835
1836 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1837 {
1838 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1839
1840 return tpg->tpgt;
1841 }
1842
1843 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1844 {
1845 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1846
1847 return tpg->tpg_attrib.default_cmdsn_depth;
1848 }
1849
1850 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1851 {
1852 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1853
1854 return tpg->tpg_attrib.generate_node_acls;
1855 }
1856
1857 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1858 {
1859 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1860
1861 return tpg->tpg_attrib.cache_dynamic_acls;
1862 }
1863
1864 static int lio_tpg_check_demo_mode_write_protect(
1865 struct se_portal_group *se_tpg)
1866 {
1867 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1868
1869 return tpg->tpg_attrib.demo_mode_write_protect;
1870 }
1871
1872 static int lio_tpg_check_prod_mode_write_protect(
1873 struct se_portal_group *se_tpg)
1874 {
1875 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1876
1877 return tpg->tpg_attrib.prod_mode_write_protect;
1878 }
1879
1880 static void lio_tpg_release_fabric_acl(
1881 struct se_portal_group *se_tpg,
1882 struct se_node_acl *se_acl)
1883 {
1884 struct iscsi_node_acl *acl = container_of(se_acl,
1885 struct iscsi_node_acl, se_node_acl);
1886 kfree(acl);
1887 }
1888
1889 /*
1890 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1891 *
1892 * Also, this function calls iscsit_inc_session_usage_count() on the
1893 * struct iscsi_session in question.
1894 */
1895 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1896 {
1897 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1898
1899 spin_lock(&sess->conn_lock);
1900 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1901 atomic_read(&sess->session_logout) ||
1902 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1903 spin_unlock(&sess->conn_lock);
1904 return 0;
1905 }
1906 atomic_set(&sess->session_reinstatement, 1);
1907 spin_unlock(&sess->conn_lock);
1908
1909 iscsit_stop_time2retain_timer(sess);
1910 iscsit_stop_session(sess, 1, 1);
1911
1912 return 1;
1913 }
1914
1915 /*
1916 * Calls iscsit_dec_session_usage_count() as inverse of
1917 * lio_tpg_shutdown_session()
1918 */
1919 static void lio_tpg_close_session(struct se_session *se_sess)
1920 {
1921 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1922 /*
1923 * If the iSCSI Session for the iSCSI Initiator Node exists,
1924 * forcefully shutdown the iSCSI NEXUS.
1925 */
1926 iscsit_close_session(sess);
1927 }
1928
1929 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1930 {
1931 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1932
1933 return tpg->tpg_tiqn->tiqn_index;
1934 }
1935
1936 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1937 {
1938 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1939 se_node_acl);
1940 struct se_portal_group *se_tpg = se_acl->se_tpg;
1941 struct iscsi_portal_group *tpg = container_of(se_tpg,
1942 struct iscsi_portal_group, tpg_se_tpg);
1943
1944 acl->node_attrib.nacl = acl;
1945 iscsit_set_default_node_attribues(acl, tpg);
1946 }
1947
1948 static int lio_check_stop_free(struct se_cmd *se_cmd)
1949 {
1950 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1951 }
1952
1953 static void lio_release_cmd(struct se_cmd *se_cmd)
1954 {
1955 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1956
1957 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1958 iscsit_release_cmd(cmd);
1959 }
1960
1961 /* End functions for target_core_fabric_ops */
1962
1963 int iscsi_target_register_configfs(void)
1964 {
1965 struct target_fabric_configfs *fabric;
1966 int ret;
1967
1968 lio_target_fabric_configfs = NULL;
1969 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1970 if (IS_ERR(fabric)) {
1971 pr_err("target_fabric_configfs_init() for"
1972 " LIO-Target failed!\n");
1973 return PTR_ERR(fabric);
1974 }
1975 /*
1976 * Setup the fabric API of function pointers used by target_core_mod..
1977 */
1978 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1979 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1980 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1981 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1982 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1983 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1984 fabric->tf_ops.tpg_get_pr_transport_id_len =
1985 &iscsi_get_pr_transport_id_len;
1986 fabric->tf_ops.tpg_parse_pr_out_transport_id =
1987 &iscsi_parse_pr_out_transport_id;
1988 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1989 fabric->tf_ops.tpg_check_demo_mode_cache =
1990 &lio_tpg_check_demo_mode_cache;
1991 fabric->tf_ops.tpg_check_demo_mode_write_protect =
1992 &lio_tpg_check_demo_mode_write_protect;
1993 fabric->tf_ops.tpg_check_prod_mode_write_protect =
1994 &lio_tpg_check_prod_mode_write_protect;
1995 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1996 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1997 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1998 fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1999 fabric->tf_ops.release_cmd = &lio_release_cmd;
2000 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
2001 fabric->tf_ops.close_session = &lio_tpg_close_session;
2002 fabric->tf_ops.sess_get_index = &lio_sess_get_index;
2003 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
2004 fabric->tf_ops.write_pending = &lio_write_pending;
2005 fabric->tf_ops.write_pending_status = &lio_write_pending_status;
2006 fabric->tf_ops.set_default_node_attributes =
2007 &lio_set_default_node_attributes;
2008 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
2009 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
2010 fabric->tf_ops.queue_data_in = &lio_queue_data_in;
2011 fabric->tf_ops.queue_status = &lio_queue_status;
2012 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
2013 fabric->tf_ops.aborted_task = &lio_aborted_task;
2014 /*
2015 * Setup function pointers for generic logic in target_core_fabric_configfs.c
2016 */
2017 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
2018 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
2019 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
2020 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
2021 fabric->tf_ops.fabric_post_link = NULL;
2022 fabric->tf_ops.fabric_pre_unlink = NULL;
2023 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2024 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2025 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2026 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2027 /*
2028 * Setup default attribute lists for various fabric->tf_cit_tmpl
2029 * sturct config_item_type's
2030 */
2031 fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2032 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2033 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2034 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2035 fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2036 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2037 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2038 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2039 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2040 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2041 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2042
2043 ret = target_fabric_configfs_register(fabric);
2044 if (ret < 0) {
2045 pr_err("target_fabric_configfs_register() for"
2046 " LIO-Target failed!\n");
2047 target_fabric_configfs_free(fabric);
2048 return ret;
2049 }
2050
2051 lio_target_fabric_configfs = fabric;
2052 pr_debug("LIO_TARGET[0] - Set fabric ->"
2053 " lio_target_fabric_configfs\n");
2054 return 0;
2055 }
2056
2057
2058 void iscsi_target_deregister_configfs(void)
2059 {
2060 if (!lio_target_fabric_configfs)
2061 return;
2062 /*
2063 * Shutdown discovery sessions and disable discovery TPG
2064 */
2065 if (iscsit_global->discovery_tpg)
2066 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2067
2068 target_fabric_configfs_deregister(lio_target_fabric_configfs);
2069 lio_target_fabric_configfs = NULL;
2070 pr_debug("LIO_TARGET[0] - Cleared"
2071 " lio_target_fabric_configfs\n");
2072 }
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