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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 "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 \
478 snprintf(auth->name, sizeof(auth->name), "%s", page); \
479 if (!strncmp("NULL", auth->name, 4)) \
480 auth->naf_flags &= ~flags; \
481 else \
482 auth->naf_flags |= flags; \
483 \
484 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
485 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
486 auth->authenticate_target = 1; \
487 else \
488 auth->authenticate_target = 0; \
489 \
490 return count; \
491 }
492
493 #define __DEF_NACL_AUTH_INT(prefix, name) \
494 static ssize_t __iscsi_##prefix##_show_##name( \
495 struct iscsi_node_acl *nacl, \
496 char *page) \
497 { \
498 struct iscsi_node_auth *auth = &nacl->node_auth; \
499 \
500 if (!capable(CAP_SYS_ADMIN)) \
501 return -EPERM; \
502 \
503 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
504 }
505
506 #define DEF_NACL_AUTH_STR(name, flags) \
507 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
508 static ssize_t iscsi_nacl_auth_show_##name( \
509 struct se_node_acl *nacl, \
510 char *page) \
511 { \
512 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
513 struct iscsi_node_acl, se_node_acl), page); \
514 } \
515 static ssize_t iscsi_nacl_auth_store_##name( \
516 struct se_node_acl *nacl, \
517 const char *page, \
518 size_t count) \
519 { \
520 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
521 struct iscsi_node_acl, se_node_acl), page, count); \
522 }
523
524 #define DEF_NACL_AUTH_INT(name) \
525 __DEF_NACL_AUTH_INT(nacl_auth, name) \
526 static ssize_t iscsi_nacl_auth_show_##name( \
527 struct se_node_acl *nacl, \
528 char *page) \
529 { \
530 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
531 struct iscsi_node_acl, se_node_acl), page); \
532 }
533
534 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
535 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
536
537 /*
538 * One-way authentication userid
539 */
540 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
541 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
542 /*
543 * One-way authentication password
544 */
545 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
546 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
547 /*
548 * Enforce mutual authentication
549 */
550 DEF_NACL_AUTH_INT(authenticate_target);
551 AUTH_ATTR_RO(authenticate_target);
552 /*
553 * Mutual authentication userid
554 */
555 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
556 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
557 /*
558 * Mutual authentication password
559 */
560 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
561 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
562
563 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
564 &iscsi_nacl_auth_userid.attr,
565 &iscsi_nacl_auth_password.attr,
566 &iscsi_nacl_auth_authenticate_target.attr,
567 &iscsi_nacl_auth_userid_mutual.attr,
568 &iscsi_nacl_auth_password_mutual.attr,
569 NULL,
570 };
571
572 /* End items for lio_target_nacl_auth_cit */
573
574 /* Start items for lio_target_nacl_param_cit */
575
576 #define DEF_NACL_PARAM(name) \
577 static ssize_t iscsi_nacl_param_show_##name( \
578 struct se_node_acl *se_nacl, \
579 char *page) \
580 { \
581 struct iscsi_session *sess; \
582 struct se_session *se_sess; \
583 ssize_t rb; \
584 \
585 spin_lock_bh(&se_nacl->nacl_sess_lock); \
586 se_sess = se_nacl->nacl_sess; \
587 if (!se_sess) { \
588 rb = snprintf(page, PAGE_SIZE, \
589 "No Active iSCSI Session\n"); \
590 } else { \
591 sess = se_sess->fabric_sess_ptr; \
592 rb = snprintf(page, PAGE_SIZE, "%u\n", \
593 (u32)sess->sess_ops->name); \
594 } \
595 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
596 \
597 return rb; \
598 }
599
600 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
601
602 DEF_NACL_PARAM(MaxConnections);
603 NACL_PARAM_ATTR(MaxConnections);
604
605 DEF_NACL_PARAM(InitialR2T);
606 NACL_PARAM_ATTR(InitialR2T);
607
608 DEF_NACL_PARAM(ImmediateData);
609 NACL_PARAM_ATTR(ImmediateData);
610
611 DEF_NACL_PARAM(MaxBurstLength);
612 NACL_PARAM_ATTR(MaxBurstLength);
613
614 DEF_NACL_PARAM(FirstBurstLength);
615 NACL_PARAM_ATTR(FirstBurstLength);
616
617 DEF_NACL_PARAM(DefaultTime2Wait);
618 NACL_PARAM_ATTR(DefaultTime2Wait);
619
620 DEF_NACL_PARAM(DefaultTime2Retain);
621 NACL_PARAM_ATTR(DefaultTime2Retain);
622
623 DEF_NACL_PARAM(MaxOutstandingR2T);
624 NACL_PARAM_ATTR(MaxOutstandingR2T);
625
626 DEF_NACL_PARAM(DataPDUInOrder);
627 NACL_PARAM_ATTR(DataPDUInOrder);
628
629 DEF_NACL_PARAM(DataSequenceInOrder);
630 NACL_PARAM_ATTR(DataSequenceInOrder);
631
632 DEF_NACL_PARAM(ErrorRecoveryLevel);
633 NACL_PARAM_ATTR(ErrorRecoveryLevel);
634
635 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
636 &iscsi_nacl_param_MaxConnections.attr,
637 &iscsi_nacl_param_InitialR2T.attr,
638 &iscsi_nacl_param_ImmediateData.attr,
639 &iscsi_nacl_param_MaxBurstLength.attr,
640 &iscsi_nacl_param_FirstBurstLength.attr,
641 &iscsi_nacl_param_DefaultTime2Wait.attr,
642 &iscsi_nacl_param_DefaultTime2Retain.attr,
643 &iscsi_nacl_param_MaxOutstandingR2T.attr,
644 &iscsi_nacl_param_DataPDUInOrder.attr,
645 &iscsi_nacl_param_DataSequenceInOrder.attr,
646 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
647 NULL,
648 };
649
650 /* End items for lio_target_nacl_param_cit */
651
652 /* Start items for lio_target_acl_cit */
653
654 static ssize_t lio_target_nacl_show_info(
655 struct se_node_acl *se_nacl,
656 char *page)
657 {
658 struct iscsi_session *sess;
659 struct iscsi_conn *conn;
660 struct se_session *se_sess;
661 ssize_t rb = 0;
662
663 spin_lock_bh(&se_nacl->nacl_sess_lock);
664 se_sess = se_nacl->nacl_sess;
665 if (!se_sess) {
666 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
667 " Endpoint: %s\n", se_nacl->initiatorname);
668 } else {
669 sess = se_sess->fabric_sess_ptr;
670
671 if (sess->sess_ops->InitiatorName)
672 rb += sprintf(page+rb, "InitiatorName: %s\n",
673 sess->sess_ops->InitiatorName);
674 if (sess->sess_ops->InitiatorAlias)
675 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
676 sess->sess_ops->InitiatorAlias);
677
678 rb += sprintf(page+rb, "LIO Session ID: %u "
679 "ISID: 0x%02x %02x %02x %02x %02x %02x "
680 "TSIH: %hu ", sess->sid,
681 sess->isid[0], sess->isid[1], sess->isid[2],
682 sess->isid[3], sess->isid[4], sess->isid[5],
683 sess->tsih);
684 rb += sprintf(page+rb, "SessionType: %s\n",
685 (sess->sess_ops->SessionType) ?
686 "Discovery" : "Normal");
687 rb += sprintf(page+rb, "Session State: ");
688 switch (sess->session_state) {
689 case TARG_SESS_STATE_FREE:
690 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
691 break;
692 case TARG_SESS_STATE_ACTIVE:
693 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
694 break;
695 case TARG_SESS_STATE_LOGGED_IN:
696 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
697 break;
698 case TARG_SESS_STATE_FAILED:
699 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
700 break;
701 case TARG_SESS_STATE_IN_CONTINUE:
702 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
703 break;
704 default:
705 rb += sprintf(page+rb, "ERROR: Unknown Session"
706 " State!\n");
707 break;
708 }
709
710 rb += sprintf(page+rb, "---------------------[iSCSI Session"
711 " Values]-----------------------\n");
712 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
713 " : MaxCmdSN : ITT : TTT\n");
714 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
715 " 0x%08x 0x%08x\n",
716 sess->cmdsn_window,
717 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
718 sess->exp_cmd_sn, sess->max_cmd_sn,
719 sess->init_task_tag, sess->targ_xfer_tag);
720 rb += sprintf(page+rb, "----------------------[iSCSI"
721 " Connections]-------------------------\n");
722
723 spin_lock(&sess->conn_lock);
724 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
725 rb += sprintf(page+rb, "CID: %hu Connection"
726 " State: ", conn->cid);
727 switch (conn->conn_state) {
728 case TARG_CONN_STATE_FREE:
729 rb += sprintf(page+rb,
730 "TARG_CONN_STATE_FREE\n");
731 break;
732 case TARG_CONN_STATE_XPT_UP:
733 rb += sprintf(page+rb,
734 "TARG_CONN_STATE_XPT_UP\n");
735 break;
736 case TARG_CONN_STATE_IN_LOGIN:
737 rb += sprintf(page+rb,
738 "TARG_CONN_STATE_IN_LOGIN\n");
739 break;
740 case TARG_CONN_STATE_LOGGED_IN:
741 rb += sprintf(page+rb,
742 "TARG_CONN_STATE_LOGGED_IN\n");
743 break;
744 case TARG_CONN_STATE_IN_LOGOUT:
745 rb += sprintf(page+rb,
746 "TARG_CONN_STATE_IN_LOGOUT\n");
747 break;
748 case TARG_CONN_STATE_LOGOUT_REQUESTED:
749 rb += sprintf(page+rb,
750 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
751 break;
752 case TARG_CONN_STATE_CLEANUP_WAIT:
753 rb += sprintf(page+rb,
754 "TARG_CONN_STATE_CLEANUP_WAIT\n");
755 break;
756 default:
757 rb += sprintf(page+rb,
758 "ERROR: Unknown Connection State!\n");
759 break;
760 }
761
762 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
763 (conn->network_transport == ISCSI_TCP) ?
764 "TCP" : "SCTP");
765 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
766 conn->stat_sn);
767 }
768 spin_unlock(&sess->conn_lock);
769 }
770 spin_unlock_bh(&se_nacl->nacl_sess_lock);
771
772 return rb;
773 }
774
775 TF_NACL_BASE_ATTR_RO(lio_target, info);
776
777 static ssize_t lio_target_nacl_show_cmdsn_depth(
778 struct se_node_acl *se_nacl,
779 char *page)
780 {
781 return sprintf(page, "%u\n", se_nacl->queue_depth);
782 }
783
784 static ssize_t lio_target_nacl_store_cmdsn_depth(
785 struct se_node_acl *se_nacl,
786 const char *page,
787 size_t count)
788 {
789 struct se_portal_group *se_tpg = se_nacl->se_tpg;
790 struct iscsi_portal_group *tpg = container_of(se_tpg,
791 struct iscsi_portal_group, tpg_se_tpg);
792 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
793 u32 cmdsn_depth = 0;
794 int ret;
795
796 ret = kstrtou32(page, 0, &cmdsn_depth);
797 if (ret)
798 return ret;
799 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
800 pr_err("Passed cmdsn_depth: %u exceeds"
801 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
802 TA_DEFAULT_CMDSN_DEPTH_MAX);
803 return -EINVAL;
804 }
805 acl_ci = &se_nacl->acl_group.cg_item;
806 if (!acl_ci) {
807 pr_err("Unable to locatel acl_ci\n");
808 return -EINVAL;
809 }
810 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
811 if (!tpg_ci) {
812 pr_err("Unable to locate tpg_ci\n");
813 return -EINVAL;
814 }
815 wwn_ci = &tpg_ci->ci_group->cg_item;
816 if (!wwn_ci) {
817 pr_err("Unable to locate config_item wwn_ci\n");
818 return -EINVAL;
819 }
820
821 if (iscsit_get_tpg(tpg) < 0)
822 return -EINVAL;
823 /*
824 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
825 */
826 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
827 config_item_name(acl_ci), cmdsn_depth, 1);
828
829 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
830 "InitiatorName: %s\n", config_item_name(wwn_ci),
831 config_item_name(tpg_ci), cmdsn_depth,
832 config_item_name(acl_ci));
833
834 iscsit_put_tpg(tpg);
835 return (!ret) ? count : (ssize_t)ret;
836 }
837
838 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
839
840 static ssize_t lio_target_nacl_show_tag(
841 struct se_node_acl *se_nacl,
842 char *page)
843 {
844 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
845 }
846
847 static ssize_t lio_target_nacl_store_tag(
848 struct se_node_acl *se_nacl,
849 const char *page,
850 size_t count)
851 {
852 int ret;
853
854 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
855
856 if (ret < 0)
857 return ret;
858 return count;
859 }
860
861 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
862
863 static struct configfs_attribute *lio_target_initiator_attrs[] = {
864 &lio_target_nacl_info.attr,
865 &lio_target_nacl_cmdsn_depth.attr,
866 &lio_target_nacl_tag.attr,
867 NULL,
868 };
869
870 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
871 struct se_portal_group *se_tpg)
872 {
873 struct iscsi_node_acl *acl;
874
875 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
876 if (!acl) {
877 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
878 return NULL;
879 }
880
881 return &acl->se_node_acl;
882 }
883
884 static struct se_node_acl *lio_target_make_nodeacl(
885 struct se_portal_group *se_tpg,
886 struct config_group *group,
887 const char *name)
888 {
889 struct config_group *stats_cg;
890 struct iscsi_node_acl *acl;
891 struct se_node_acl *se_nacl_new, *se_nacl;
892 struct iscsi_portal_group *tpg = container_of(se_tpg,
893 struct iscsi_portal_group, tpg_se_tpg);
894 u32 cmdsn_depth;
895
896 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
897 if (!se_nacl_new)
898 return ERR_PTR(-ENOMEM);
899
900 cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
901 /*
902 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
903 * when converting a NdoeACL from demo mode -> explict
904 */
905 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
906 name, cmdsn_depth);
907 if (IS_ERR(se_nacl))
908 return se_nacl;
909
910 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
911 stats_cg = &se_nacl->acl_fabric_stat_group;
912
913 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
914 GFP_KERNEL);
915 if (!stats_cg->default_groups) {
916 pr_err("Unable to allocate memory for"
917 " stats_cg->default_groups\n");
918 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
919 kfree(acl);
920 return ERR_PTR(-ENOMEM);
921 }
922
923 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
924 stats_cg->default_groups[1] = NULL;
925 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
926 "iscsi_sess_stats", &iscsi_stat_sess_cit);
927
928 return se_nacl;
929 }
930
931 static void lio_target_drop_nodeacl(
932 struct se_node_acl *se_nacl)
933 {
934 struct se_portal_group *se_tpg = se_nacl->se_tpg;
935 struct iscsi_node_acl *acl = container_of(se_nacl,
936 struct iscsi_node_acl, se_node_acl);
937 struct config_item *df_item;
938 struct config_group *stats_cg;
939 int i;
940
941 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
942 for (i = 0; stats_cg->default_groups[i]; i++) {
943 df_item = &stats_cg->default_groups[i]->cg_item;
944 stats_cg->default_groups[i] = NULL;
945 config_item_put(df_item);
946 }
947 kfree(stats_cg->default_groups);
948
949 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
950 kfree(acl);
951 }
952
953 /* End items for lio_target_acl_cit */
954
955 /* Start items for lio_target_tpg_attrib_cit */
956
957 #define DEF_TPG_ATTRIB(name) \
958 \
959 static ssize_t iscsi_tpg_attrib_show_##name( \
960 struct se_portal_group *se_tpg, \
961 char *page) \
962 { \
963 struct iscsi_portal_group *tpg = container_of(se_tpg, \
964 struct iscsi_portal_group, tpg_se_tpg); \
965 ssize_t rb; \
966 \
967 if (iscsit_get_tpg(tpg) < 0) \
968 return -EINVAL; \
969 \
970 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
971 iscsit_put_tpg(tpg); \
972 return rb; \
973 } \
974 \
975 static ssize_t iscsi_tpg_attrib_store_##name( \
976 struct se_portal_group *se_tpg, \
977 const char *page, \
978 size_t count) \
979 { \
980 struct iscsi_portal_group *tpg = container_of(se_tpg, \
981 struct iscsi_portal_group, tpg_se_tpg); \
982 u32 val; \
983 int ret; \
984 \
985 if (iscsit_get_tpg(tpg) < 0) \
986 return -EINVAL; \
987 \
988 ret = kstrtou32(page, 0, &val); \
989 if (ret) \
990 goto out; \
991 ret = iscsit_ta_##name(tpg, val); \
992 if (ret < 0) \
993 goto out; \
994 \
995 iscsit_put_tpg(tpg); \
996 return count; \
997 out: \
998 iscsit_put_tpg(tpg); \
999 return ret; \
1000 }
1001
1002 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1003
1004 /*
1005 * Define iscsi_tpg_attrib_s_authentication
1006 */
1007 DEF_TPG_ATTRIB(authentication);
1008 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1009 /*
1010 * Define iscsi_tpg_attrib_s_login_timeout
1011 */
1012 DEF_TPG_ATTRIB(login_timeout);
1013 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1014 /*
1015 * Define iscsi_tpg_attrib_s_netif_timeout
1016 */
1017 DEF_TPG_ATTRIB(netif_timeout);
1018 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1019 /*
1020 * Define iscsi_tpg_attrib_s_generate_node_acls
1021 */
1022 DEF_TPG_ATTRIB(generate_node_acls);
1023 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1024 /*
1025 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1026 */
1027 DEF_TPG_ATTRIB(default_cmdsn_depth);
1028 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1029 /*
1030 Define iscsi_tpg_attrib_s_cache_dynamic_acls
1031 */
1032 DEF_TPG_ATTRIB(cache_dynamic_acls);
1033 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1034 /*
1035 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1036 */
1037 DEF_TPG_ATTRIB(demo_mode_write_protect);
1038 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1039 /*
1040 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1041 */
1042 DEF_TPG_ATTRIB(prod_mode_write_protect);
1043 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1044 /*
1045 * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1046 */
1047 DEF_TPG_ATTRIB(demo_mode_discovery);
1048 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1049
1050 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1051 &iscsi_tpg_attrib_authentication.attr,
1052 &iscsi_tpg_attrib_login_timeout.attr,
1053 &iscsi_tpg_attrib_netif_timeout.attr,
1054 &iscsi_tpg_attrib_generate_node_acls.attr,
1055 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1056 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1057 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1058 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1059 &iscsi_tpg_attrib_demo_mode_discovery.attr,
1060 NULL,
1061 };
1062
1063 /* End items for lio_target_tpg_attrib_cit */
1064
1065 /* Start items for lio_target_tpg_auth_cit */
1066
1067 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
1068 static ssize_t __iscsi_##prefix##_show_##name( \
1069 struct se_portal_group *se_tpg, \
1070 char *page) \
1071 { \
1072 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1073 struct iscsi_portal_group, tpg_se_tpg); \
1074 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1075 \
1076 if (!capable(CAP_SYS_ADMIN)) \
1077 return -EPERM; \
1078 \
1079 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
1080 } \
1081 \
1082 static ssize_t __iscsi_##prefix##_store_##name( \
1083 struct se_portal_group *se_tpg, \
1084 const char *page, \
1085 size_t count) \
1086 { \
1087 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1088 struct iscsi_portal_group, tpg_se_tpg); \
1089 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1090 \
1091 if (!capable(CAP_SYS_ADMIN)) \
1092 return -EPERM; \
1093 \
1094 snprintf(auth->name, sizeof(auth->name), "%s", page); \
1095 if (!(strncmp("NULL", auth->name, 4))) \
1096 auth->naf_flags &= ~flags; \
1097 else \
1098 auth->naf_flags |= flags; \
1099 \
1100 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
1101 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
1102 auth->authenticate_target = 1; \
1103 else \
1104 auth->authenticate_target = 0; \
1105 \
1106 return count; \
1107 }
1108
1109 #define __DEF_TPG_AUTH_INT(prefix, name) \
1110 static ssize_t __iscsi_##prefix##_show_##name( \
1111 struct se_portal_group *se_tpg, \
1112 char *page) \
1113 { \
1114 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1115 struct iscsi_portal_group, tpg_se_tpg); \
1116 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1117 \
1118 if (!capable(CAP_SYS_ADMIN)) \
1119 return -EPERM; \
1120 \
1121 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
1122 }
1123
1124 #define DEF_TPG_AUTH_STR(name, flags) \
1125 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
1126 static ssize_t iscsi_tpg_auth_show_##name( \
1127 struct se_portal_group *se_tpg, \
1128 char *page) \
1129 { \
1130 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1131 } \
1132 \
1133 static ssize_t iscsi_tpg_auth_store_##name( \
1134 struct se_portal_group *se_tpg, \
1135 const char *page, \
1136 size_t count) \
1137 { \
1138 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \
1139 }
1140
1141 #define DEF_TPG_AUTH_INT(name) \
1142 __DEF_TPG_AUTH_INT(tpg_auth, name) \
1143 static ssize_t iscsi_tpg_auth_show_##name( \
1144 struct se_portal_group *se_tpg, \
1145 char *page) \
1146 { \
1147 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1148 }
1149
1150 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1151 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1152
1153 /*
1154 * * One-way authentication userid
1155 * */
1156 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1157 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1158 /*
1159 * * One-way authentication password
1160 * */
1161 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1162 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1163 /*
1164 * * Enforce mutual authentication
1165 * */
1166 DEF_TPG_AUTH_INT(authenticate_target);
1167 TPG_AUTH_ATTR_RO(authenticate_target);
1168 /*
1169 * * Mutual authentication userid
1170 * */
1171 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1172 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1173 /*
1174 * * Mutual authentication password
1175 * */
1176 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1177 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1178
1179 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1180 &iscsi_tpg_auth_userid.attr,
1181 &iscsi_tpg_auth_password.attr,
1182 &iscsi_tpg_auth_authenticate_target.attr,
1183 &iscsi_tpg_auth_userid_mutual.attr,
1184 &iscsi_tpg_auth_password_mutual.attr,
1185 NULL,
1186 };
1187
1188 /* End items for lio_target_tpg_auth_cit */
1189
1190 /* Start items for lio_target_tpg_param_cit */
1191
1192 #define DEF_TPG_PARAM(name) \
1193 static ssize_t iscsi_tpg_param_show_##name( \
1194 struct se_portal_group *se_tpg, \
1195 char *page) \
1196 { \
1197 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1198 struct iscsi_portal_group, tpg_se_tpg); \
1199 struct iscsi_param *param; \
1200 ssize_t rb; \
1201 \
1202 if (iscsit_get_tpg(tpg) < 0) \
1203 return -EINVAL; \
1204 \
1205 param = iscsi_find_param_from_key(__stringify(name), \
1206 tpg->param_list); \
1207 if (!param) { \
1208 iscsit_put_tpg(tpg); \
1209 return -EINVAL; \
1210 } \
1211 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1212 \
1213 iscsit_put_tpg(tpg); \
1214 return rb; \
1215 } \
1216 static ssize_t iscsi_tpg_param_store_##name( \
1217 struct se_portal_group *se_tpg, \
1218 const char *page, \
1219 size_t count) \
1220 { \
1221 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1222 struct iscsi_portal_group, tpg_se_tpg); \
1223 char *buf; \
1224 int ret, len; \
1225 \
1226 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1227 if (!buf) \
1228 return -ENOMEM; \
1229 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1230 if (isspace(buf[len-1])) \
1231 buf[len-1] = '\0'; /* Kill newline */ \
1232 \
1233 if (iscsit_get_tpg(tpg) < 0) { \
1234 kfree(buf); \
1235 return -EINVAL; \
1236 } \
1237 \
1238 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1239 if (ret < 0) \
1240 goto out; \
1241 \
1242 kfree(buf); \
1243 iscsit_put_tpg(tpg); \
1244 return count; \
1245 out: \
1246 kfree(buf); \
1247 iscsit_put_tpg(tpg); \
1248 return -EINVAL; \
1249 }
1250
1251 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1252
1253 DEF_TPG_PARAM(AuthMethod);
1254 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1255
1256 DEF_TPG_PARAM(HeaderDigest);
1257 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1258
1259 DEF_TPG_PARAM(DataDigest);
1260 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1261
1262 DEF_TPG_PARAM(MaxConnections);
1263 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1264
1265 DEF_TPG_PARAM(TargetAlias);
1266 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1267
1268 DEF_TPG_PARAM(InitialR2T);
1269 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1270
1271 DEF_TPG_PARAM(ImmediateData);
1272 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1273
1274 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1275 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1276
1277 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1278 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1279
1280 DEF_TPG_PARAM(MaxBurstLength);
1281 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1282
1283 DEF_TPG_PARAM(FirstBurstLength);
1284 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1285
1286 DEF_TPG_PARAM(DefaultTime2Wait);
1287 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1288
1289 DEF_TPG_PARAM(DefaultTime2Retain);
1290 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1291
1292 DEF_TPG_PARAM(MaxOutstandingR2T);
1293 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1294
1295 DEF_TPG_PARAM(DataPDUInOrder);
1296 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1297
1298 DEF_TPG_PARAM(DataSequenceInOrder);
1299 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1300
1301 DEF_TPG_PARAM(ErrorRecoveryLevel);
1302 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1303
1304 DEF_TPG_PARAM(IFMarker);
1305 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1306
1307 DEF_TPG_PARAM(OFMarker);
1308 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1309
1310 DEF_TPG_PARAM(IFMarkInt);
1311 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1312
1313 DEF_TPG_PARAM(OFMarkInt);
1314 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1315
1316 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1317 &iscsi_tpg_param_AuthMethod.attr,
1318 &iscsi_tpg_param_HeaderDigest.attr,
1319 &iscsi_tpg_param_DataDigest.attr,
1320 &iscsi_tpg_param_MaxConnections.attr,
1321 &iscsi_tpg_param_TargetAlias.attr,
1322 &iscsi_tpg_param_InitialR2T.attr,
1323 &iscsi_tpg_param_ImmediateData.attr,
1324 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1325 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1326 &iscsi_tpg_param_MaxBurstLength.attr,
1327 &iscsi_tpg_param_FirstBurstLength.attr,
1328 &iscsi_tpg_param_DefaultTime2Wait.attr,
1329 &iscsi_tpg_param_DefaultTime2Retain.attr,
1330 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1331 &iscsi_tpg_param_DataPDUInOrder.attr,
1332 &iscsi_tpg_param_DataSequenceInOrder.attr,
1333 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1334 &iscsi_tpg_param_IFMarker.attr,
1335 &iscsi_tpg_param_OFMarker.attr,
1336 &iscsi_tpg_param_IFMarkInt.attr,
1337 &iscsi_tpg_param_OFMarkInt.attr,
1338 NULL,
1339 };
1340
1341 /* End items for lio_target_tpg_param_cit */
1342
1343 /* Start items for lio_target_tpg_cit */
1344
1345 static ssize_t lio_target_tpg_show_enable(
1346 struct se_portal_group *se_tpg,
1347 char *page)
1348 {
1349 struct iscsi_portal_group *tpg = container_of(se_tpg,
1350 struct iscsi_portal_group, tpg_se_tpg);
1351 ssize_t len;
1352
1353 spin_lock(&tpg->tpg_state_lock);
1354 len = sprintf(page, "%d\n",
1355 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1356 spin_unlock(&tpg->tpg_state_lock);
1357
1358 return len;
1359 }
1360
1361 static ssize_t lio_target_tpg_store_enable(
1362 struct se_portal_group *se_tpg,
1363 const char *page,
1364 size_t count)
1365 {
1366 struct iscsi_portal_group *tpg = container_of(se_tpg,
1367 struct iscsi_portal_group, tpg_se_tpg);
1368 u32 op;
1369 int ret;
1370
1371 ret = kstrtou32(page, 0, &op);
1372 if (ret)
1373 return ret;
1374 if ((op != 1) && (op != 0)) {
1375 pr_err("Illegal value for tpg_enable: %u\n", op);
1376 return -EINVAL;
1377 }
1378
1379 ret = iscsit_get_tpg(tpg);
1380 if (ret < 0)
1381 return -EINVAL;
1382
1383 if (op) {
1384 ret = iscsit_tpg_enable_portal_group(tpg);
1385 if (ret < 0)
1386 goto out;
1387 } else {
1388 /*
1389 * iscsit_tpg_disable_portal_group() assumes force=1
1390 */
1391 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1392 if (ret < 0)
1393 goto out;
1394 }
1395
1396 iscsit_put_tpg(tpg);
1397 return count;
1398 out:
1399 iscsit_put_tpg(tpg);
1400 return -EINVAL;
1401 }
1402
1403 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1404
1405 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1406 &lio_target_tpg_enable.attr,
1407 NULL,
1408 };
1409
1410 /* End items for lio_target_tpg_cit */
1411
1412 /* Start items for lio_target_tiqn_cit */
1413
1414 static struct se_portal_group *lio_target_tiqn_addtpg(
1415 struct se_wwn *wwn,
1416 struct config_group *group,
1417 const char *name)
1418 {
1419 struct iscsi_portal_group *tpg;
1420 struct iscsi_tiqn *tiqn;
1421 char *tpgt_str;
1422 int ret;
1423 u16 tpgt;
1424
1425 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1426 /*
1427 * Only tpgt_# directory groups can be created below
1428 * target/iscsi/iqn.superturodiskarry/
1429 */
1430 tpgt_str = strstr(name, "tpgt_");
1431 if (!tpgt_str) {
1432 pr_err("Unable to locate \"tpgt_#\" directory"
1433 " group\n");
1434 return NULL;
1435 }
1436 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1437 ret = kstrtou16(tpgt_str, 0, &tpgt);
1438 if (ret)
1439 return NULL;
1440
1441 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1442 if (!tpg)
1443 return NULL;
1444
1445 ret = core_tpg_register(
1446 &lio_target_fabric_configfs->tf_ops,
1447 wwn, &tpg->tpg_se_tpg, tpg,
1448 TRANSPORT_TPG_TYPE_NORMAL);
1449 if (ret < 0)
1450 return NULL;
1451
1452 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1453 if (ret != 0)
1454 goto out;
1455
1456 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1457 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1458 name);
1459 return &tpg->tpg_se_tpg;
1460 out:
1461 core_tpg_deregister(&tpg->tpg_se_tpg);
1462 kfree(tpg);
1463 return NULL;
1464 }
1465
1466 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1467 {
1468 struct iscsi_portal_group *tpg;
1469 struct iscsi_tiqn *tiqn;
1470
1471 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1472 tiqn = tpg->tpg_tiqn;
1473 /*
1474 * iscsit_tpg_del_portal_group() assumes force=1
1475 */
1476 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1477 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1478 }
1479
1480 /* End items for lio_target_tiqn_cit */
1481
1482 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1483
1484 static ssize_t lio_target_wwn_show_attr_lio_version(
1485 struct target_fabric_configfs *tf,
1486 char *page)
1487 {
1488 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1489 }
1490
1491 TF_WWN_ATTR_RO(lio_target, lio_version);
1492
1493 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1494 &lio_target_wwn_lio_version.attr,
1495 NULL,
1496 };
1497
1498 static struct se_wwn *lio_target_call_coreaddtiqn(
1499 struct target_fabric_configfs *tf,
1500 struct config_group *group,
1501 const char *name)
1502 {
1503 struct config_group *stats_cg;
1504 struct iscsi_tiqn *tiqn;
1505
1506 tiqn = iscsit_add_tiqn((unsigned char *)name);
1507 if (IS_ERR(tiqn))
1508 return ERR_CAST(tiqn);
1509 /*
1510 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1511 */
1512 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1513
1514 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1515 GFP_KERNEL);
1516 if (!stats_cg->default_groups) {
1517 pr_err("Unable to allocate memory for"
1518 " stats_cg->default_groups\n");
1519 iscsit_del_tiqn(tiqn);
1520 return ERR_PTR(-ENOMEM);
1521 }
1522
1523 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1524 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1525 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1526 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1527 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1528 stats_cg->default_groups[5] = NULL;
1529 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1530 "iscsi_instance", &iscsi_stat_instance_cit);
1531 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1532 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1533 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1534 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1535 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1536 "iscsi_login_stats", &iscsi_stat_login_cit);
1537 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1538 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1539
1540 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1541 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1542 " %s\n", name);
1543 return &tiqn->tiqn_wwn;
1544 }
1545
1546 static void lio_target_call_coredeltiqn(
1547 struct se_wwn *wwn)
1548 {
1549 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1550 struct config_item *df_item;
1551 struct config_group *stats_cg;
1552 int i;
1553
1554 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1555 for (i = 0; stats_cg->default_groups[i]; i++) {
1556 df_item = &stats_cg->default_groups[i]->cg_item;
1557 stats_cg->default_groups[i] = NULL;
1558 config_item_put(df_item);
1559 }
1560 kfree(stats_cg->default_groups);
1561
1562 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1563 tiqn->tiqn);
1564 iscsit_del_tiqn(tiqn);
1565 }
1566
1567 /* End LIO-Target TIQN struct contig_lio_target_cit */
1568
1569 /* Start lio_target_discovery_auth_cit */
1570
1571 #define DEF_DISC_AUTH_STR(name, flags) \
1572 __DEF_NACL_AUTH_STR(disc, name, flags) \
1573 static ssize_t iscsi_disc_show_##name( \
1574 struct target_fabric_configfs *tf, \
1575 char *page) \
1576 { \
1577 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1578 page); \
1579 } \
1580 static ssize_t iscsi_disc_store_##name( \
1581 struct target_fabric_configfs *tf, \
1582 const char *page, \
1583 size_t count) \
1584 { \
1585 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1586 page, count); \
1587 }
1588
1589 #define DEF_DISC_AUTH_INT(name) \
1590 __DEF_NACL_AUTH_INT(disc, name) \
1591 static ssize_t iscsi_disc_show_##name( \
1592 struct target_fabric_configfs *tf, \
1593 char *page) \
1594 { \
1595 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1596 page); \
1597 }
1598
1599 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1600 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1601
1602 /*
1603 * One-way authentication userid
1604 */
1605 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1606 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1607 /*
1608 * One-way authentication password
1609 */
1610 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1611 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1612 /*
1613 * Enforce mutual authentication
1614 */
1615 DEF_DISC_AUTH_INT(authenticate_target);
1616 DISC_AUTH_ATTR_RO(authenticate_target);
1617 /*
1618 * Mutual authentication userid
1619 */
1620 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1621 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1622 /*
1623 * Mutual authentication password
1624 */
1625 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1626 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1627
1628 /*
1629 * enforce_discovery_auth
1630 */
1631 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1632 struct target_fabric_configfs *tf,
1633 char *page)
1634 {
1635 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1636
1637 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1638 }
1639
1640 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1641 struct target_fabric_configfs *tf,
1642 const char *page,
1643 size_t count)
1644 {
1645 struct iscsi_param *param;
1646 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1647 u32 op;
1648 int err;
1649
1650 err = kstrtou32(page, 0, &op);
1651 if (err)
1652 return -EINVAL;
1653 if ((op != 1) && (op != 0)) {
1654 pr_err("Illegal value for enforce_discovery_auth:"
1655 " %u\n", op);
1656 return -EINVAL;
1657 }
1658
1659 if (!discovery_tpg) {
1660 pr_err("iscsit_global->discovery_tpg is NULL\n");
1661 return -EINVAL;
1662 }
1663
1664 param = iscsi_find_param_from_key(AUTHMETHOD,
1665 discovery_tpg->param_list);
1666 if (!param)
1667 return -EINVAL;
1668
1669 if (op) {
1670 /*
1671 * Reset the AuthMethod key to CHAP.
1672 */
1673 if (iscsi_update_param_value(param, CHAP) < 0)
1674 return -EINVAL;
1675
1676 discovery_tpg->tpg_attrib.authentication = 1;
1677 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1678 pr_debug("LIO-CORE[0] Successfully enabled"
1679 " authentication enforcement for iSCSI"
1680 " Discovery TPG\n");
1681 } else {
1682 /*
1683 * Reset the AuthMethod key to CHAP,None
1684 */
1685 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1686 return -EINVAL;
1687
1688 discovery_tpg->tpg_attrib.authentication = 0;
1689 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1690 pr_debug("LIO-CORE[0] Successfully disabled"
1691 " authentication enforcement for iSCSI"
1692 " Discovery TPG\n");
1693 }
1694
1695 return count;
1696 }
1697
1698 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1699
1700 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1701 &iscsi_disc_userid.attr,
1702 &iscsi_disc_password.attr,
1703 &iscsi_disc_authenticate_target.attr,
1704 &iscsi_disc_userid_mutual.attr,
1705 &iscsi_disc_password_mutual.attr,
1706 &iscsi_disc_enforce_discovery_auth.attr,
1707 NULL,
1708 };
1709
1710 /* End lio_target_discovery_auth_cit */
1711
1712 /* Start functions for target_core_fabric_ops */
1713
1714 static char *iscsi_get_fabric_name(void)
1715 {
1716 return "iSCSI";
1717 }
1718
1719 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1720 {
1721 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1722
1723 /* only used for printks or comparism with ->ref_task_tag */
1724 return (__force u32)cmd->init_task_tag;
1725 }
1726
1727 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1728 {
1729 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1730
1731 return cmd->i_state;
1732 }
1733
1734 static u32 lio_sess_get_index(struct se_session *se_sess)
1735 {
1736 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1737
1738 return sess->session_index;
1739 }
1740
1741 static u32 lio_sess_get_initiator_sid(
1742 struct se_session *se_sess,
1743 unsigned char *buf,
1744 u32 size)
1745 {
1746 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1747 /*
1748 * iSCSI Initiator Session Identifier from RFC-3720.
1749 */
1750 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1751 sess->isid[0], sess->isid[1], sess->isid[2],
1752 sess->isid[3], sess->isid[4], sess->isid[5]);
1753 }
1754
1755 static int lio_queue_data_in(struct se_cmd *se_cmd)
1756 {
1757 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1758
1759 cmd->i_state = ISTATE_SEND_DATAIN;
1760 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1761
1762 return 0;
1763 }
1764
1765 static int lio_write_pending(struct se_cmd *se_cmd)
1766 {
1767 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1768 struct iscsi_conn *conn = cmd->conn;
1769
1770 if (!cmd->immediate_data && !cmd->unsolicited_data)
1771 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1772
1773 return 0;
1774 }
1775
1776 static int lio_write_pending_status(struct se_cmd *se_cmd)
1777 {
1778 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1779 int ret;
1780
1781 spin_lock_bh(&cmd->istate_lock);
1782 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1783 spin_unlock_bh(&cmd->istate_lock);
1784
1785 return ret;
1786 }
1787
1788 static int lio_queue_status(struct se_cmd *se_cmd)
1789 {
1790 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1791
1792 cmd->i_state = ISTATE_SEND_STATUS;
1793
1794 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1795 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1796 return 0;
1797 }
1798 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1799
1800 return 0;
1801 }
1802
1803 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1804 {
1805 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1806
1807 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1808 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1809 }
1810
1811 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1812 {
1813 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1814
1815 return &tpg->tpg_tiqn->tiqn[0];
1816 }
1817
1818 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1819 {
1820 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1821
1822 return tpg->tpgt;
1823 }
1824
1825 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1826 {
1827 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1828
1829 return tpg->tpg_attrib.default_cmdsn_depth;
1830 }
1831
1832 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1833 {
1834 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1835
1836 return tpg->tpg_attrib.generate_node_acls;
1837 }
1838
1839 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1840 {
1841 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1842
1843 return tpg->tpg_attrib.cache_dynamic_acls;
1844 }
1845
1846 static int lio_tpg_check_demo_mode_write_protect(
1847 struct se_portal_group *se_tpg)
1848 {
1849 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1850
1851 return tpg->tpg_attrib.demo_mode_write_protect;
1852 }
1853
1854 static int lio_tpg_check_prod_mode_write_protect(
1855 struct se_portal_group *se_tpg)
1856 {
1857 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1858
1859 return tpg->tpg_attrib.prod_mode_write_protect;
1860 }
1861
1862 static void lio_tpg_release_fabric_acl(
1863 struct se_portal_group *se_tpg,
1864 struct se_node_acl *se_acl)
1865 {
1866 struct iscsi_node_acl *acl = container_of(se_acl,
1867 struct iscsi_node_acl, se_node_acl);
1868 kfree(acl);
1869 }
1870
1871 /*
1872 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1873 *
1874 * Also, this function calls iscsit_inc_session_usage_count() on the
1875 * struct iscsi_session in question.
1876 */
1877 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1878 {
1879 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1880
1881 spin_lock(&sess->conn_lock);
1882 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1883 atomic_read(&sess->session_logout) ||
1884 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1885 spin_unlock(&sess->conn_lock);
1886 return 0;
1887 }
1888 atomic_set(&sess->session_reinstatement, 1);
1889 spin_unlock(&sess->conn_lock);
1890
1891 iscsit_stop_time2retain_timer(sess);
1892 iscsit_stop_session(sess, 1, 1);
1893
1894 return 1;
1895 }
1896
1897 /*
1898 * Calls iscsit_dec_session_usage_count() as inverse of
1899 * lio_tpg_shutdown_session()
1900 */
1901 static void lio_tpg_close_session(struct se_session *se_sess)
1902 {
1903 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1904 /*
1905 * If the iSCSI Session for the iSCSI Initiator Node exists,
1906 * forcefully shutdown the iSCSI NEXUS.
1907 */
1908 iscsit_close_session(sess);
1909 }
1910
1911 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1912 {
1913 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1914
1915 return tpg->tpg_tiqn->tiqn_index;
1916 }
1917
1918 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1919 {
1920 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1921 se_node_acl);
1922
1923 acl->node_attrib.nacl = acl;
1924 iscsit_set_default_node_attribues(acl);
1925 }
1926
1927 static int lio_check_stop_free(struct se_cmd *se_cmd)
1928 {
1929 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1930 }
1931
1932 static void lio_release_cmd(struct se_cmd *se_cmd)
1933 {
1934 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1935
1936 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1937 iscsit_release_cmd(cmd);
1938 }
1939
1940 /* End functions for target_core_fabric_ops */
1941
1942 int iscsi_target_register_configfs(void)
1943 {
1944 struct target_fabric_configfs *fabric;
1945 int ret;
1946
1947 lio_target_fabric_configfs = NULL;
1948 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1949 if (IS_ERR(fabric)) {
1950 pr_err("target_fabric_configfs_init() for"
1951 " LIO-Target failed!\n");
1952 return PTR_ERR(fabric);
1953 }
1954 /*
1955 * Setup the fabric API of function pointers used by target_core_mod..
1956 */
1957 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1958 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1959 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1960 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1961 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1962 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1963 fabric->tf_ops.tpg_get_pr_transport_id_len =
1964 &iscsi_get_pr_transport_id_len;
1965 fabric->tf_ops.tpg_parse_pr_out_transport_id =
1966 &iscsi_parse_pr_out_transport_id;
1967 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1968 fabric->tf_ops.tpg_check_demo_mode_cache =
1969 &lio_tpg_check_demo_mode_cache;
1970 fabric->tf_ops.tpg_check_demo_mode_write_protect =
1971 &lio_tpg_check_demo_mode_write_protect;
1972 fabric->tf_ops.tpg_check_prod_mode_write_protect =
1973 &lio_tpg_check_prod_mode_write_protect;
1974 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1975 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1976 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1977 fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1978 fabric->tf_ops.release_cmd = &lio_release_cmd;
1979 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1980 fabric->tf_ops.close_session = &lio_tpg_close_session;
1981 fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1982 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1983 fabric->tf_ops.write_pending = &lio_write_pending;
1984 fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1985 fabric->tf_ops.set_default_node_attributes =
1986 &lio_set_default_node_attributes;
1987 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1988 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1989 fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1990 fabric->tf_ops.queue_status = &lio_queue_status;
1991 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1992 /*
1993 * Setup function pointers for generic logic in target_core_fabric_configfs.c
1994 */
1995 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1996 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1997 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1998 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1999 fabric->tf_ops.fabric_post_link = NULL;
2000 fabric->tf_ops.fabric_pre_unlink = NULL;
2001 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2002 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2003 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2004 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2005 /*
2006 * Setup default attribute lists for various fabric->tf_cit_tmpl
2007 * sturct config_item_type's
2008 */
2009 fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2010 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2011 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2012 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2013 fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2014 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2015 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2016 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2017 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2018 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2019 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2020
2021 ret = target_fabric_configfs_register(fabric);
2022 if (ret < 0) {
2023 pr_err("target_fabric_configfs_register() for"
2024 " LIO-Target failed!\n");
2025 target_fabric_configfs_free(fabric);
2026 return ret;
2027 }
2028
2029 lio_target_fabric_configfs = fabric;
2030 pr_debug("LIO_TARGET[0] - Set fabric ->"
2031 " lio_target_fabric_configfs\n");
2032 return 0;
2033 }
2034
2035
2036 void iscsi_target_deregister_configfs(void)
2037 {
2038 if (!lio_target_fabric_configfs)
2039 return;
2040 /*
2041 * Shutdown discovery sessions and disable discovery TPG
2042 */
2043 if (iscsit_global->discovery_tpg)
2044 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2045
2046 target_fabric_configfs_deregister(lio_target_fabric_configfs);
2047 lio_target_fabric_configfs = NULL;
2048 pr_debug("LIO_TARGET[0] - Cleared"
2049 " lio_target_fabric_configfs\n");
2050 }
Linux kernel - Deliverables
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