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iscsi-target: Fix tfc_tpg_nacl_auth_cit configfs length overflow
[linux-2.6-block.git] / drivers / target / iscsi / iscsi_target_configfs.c
CommitLineData
e48354ce
NB		 1/*******************************************************************************
2 * This file contains the configfs implementation for iSCSI Target mode
3 * from the LIO-Target Project.
4 *
5 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
6 *
7 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
8 *
9 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 ****************************************************************************/
21
22#include <linux/configfs.h>
c53181af 23#include <linux/export.h>
c3bc93da 24#include <linux/inet.h>
e48354ce 25#include <target/target_core_base.h>
c4795fb2 26#include <target/target_core_fabric.h>
e48354ce 27#include <target/target_core_fabric_configfs.h>
e48354ce
NB		 28#include <target/target_core_configfs.h>
29#include <target/configfs_macros.h>
2ec5a8c1 30#include <target/iscsi/iscsi_transport.h>
e48354ce
NB		 31
32#include "iscsi_target_core.h"
33#include "iscsi_target_parameters.h"
34#include "iscsi_target_device.h"
35#include "iscsi_target_erl0.h"
36#include "iscsi_target_nodeattrib.h"
37#include "iscsi_target_tpg.h"
38#include "iscsi_target_util.h"
39#include "iscsi_target.h"
40#include "iscsi_target_stat.h"
41#include "iscsi_target_configfs.h"
42
43struct target_fabric_configfs *lio_target_fabric_configfs;
44
45struct lio_target_configfs_attribute {
46 struct configfs_attribute attr;
47 ssize_t (*show)(void *, char *);
48 ssize_t (*store)(void *, const char *, size_t);
49};
50
e48354ce
NB		 51/* Start items for lio_target_portal_cit */
52
53static ssize_t lio_target_np_show_sctp(
54 struct se_tpg_np *se_tpg_np,
55 char *page)
56{
57 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
58 struct iscsi_tpg_np, se_tpg_np);
59 struct iscsi_tpg_np *tpg_np_sctp;
60 ssize_t rb;
61
62 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
63 if (tpg_np_sctp)
64 rb = sprintf(page, "1\n");
65 else
66 rb = sprintf(page, "0\n");
67
68 return rb;
69}
70
71static ssize_t lio_target_np_store_sctp(
72 struct se_tpg_np *se_tpg_np,
73 const char *page,
74 size_t count)
75{
76 struct iscsi_np *np;
77 struct iscsi_portal_group *tpg;
78 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
79 struct iscsi_tpg_np, se_tpg_np);
80 struct iscsi_tpg_np *tpg_np_sctp = NULL;
81 char *endptr;
82 u32 op;
83 int ret;
84
85 op = simple_strtoul(page, &endptr, 0);
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;
121out:
122 iscsit_put_tpg(tpg);
123 return -EINVAL;
124}
125
126TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
127
72438cdd
NB		 128static 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
146static 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;
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 int rc = request_module("ib_isert");
178 if (rc != 0)
179 pr_warn("Unable to request_module for ib_isert\n");
180
181 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
182 np->np_ip, tpg_np, ISCSI_INFINIBAND);
183 if (!tpg_np_iser || IS_ERR(tpg_np_iser))
184 goto out;
185 } else {
186 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
187 if (!tpg_np_iser)
188 goto out;
189
190 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
191 if (rc < 0)
192 goto out;
193 }
194
195 printk("lio_target_np_store_iser() done, op: %d\n", op);
196
197 iscsit_put_tpg(tpg);
198 return count;
199out:
200 iscsit_put_tpg(tpg);
201 return -EINVAL;
202}
203
204TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
205
e48354ce
NB		 206static struct configfs_attribute *lio_target_portal_attrs[] = {
207 &lio_target_np_sctp.attr,
72438cdd 208 &lio_target_np_iser.attr,
e48354ce
NB		 209 NULL,
210};
211
212/* Stop items for lio_target_portal_cit */
213
214/* Start items for lio_target_np_cit */
215
216#define MAX_PORTAL_LEN 256
217
fceb5bc7 218static struct se_tpg_np *lio_target_call_addnptotpg(
e48354ce
NB		 219 struct se_portal_group *se_tpg,
220 struct config_group *group,
221 const char *name)
222{
223 struct iscsi_portal_group *tpg;
224 struct iscsi_tpg_np *tpg_np;
225 char *str, *str2, *ip_str, *port_str;
226 struct __kernel_sockaddr_storage sockaddr;
227 struct sockaddr_in *sock_in;
228 struct sockaddr_in6 *sock_in6;
229 unsigned long port;
230 int ret;
231 char buf[MAX_PORTAL_LEN + 1];
232
233 if (strlen(name) > MAX_PORTAL_LEN) {
234 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
235 (int)strlen(name), MAX_PORTAL_LEN);
236 return ERR_PTR(-EOVERFLOW);
237 }
238 memset(buf, 0, MAX_PORTAL_LEN + 1);
7bbb654e 239 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
e48354ce
NB		 240
241 memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
242
243 str = strstr(buf, "[");
244 if (str) {
245 const char *end;
246
247 str2 = strstr(str, "]");
248 if (!str2) {
249 pr_err("Unable to locate trailing \"]\""
250 " in IPv6 iSCSI network portal address\n");
251 return ERR_PTR(-EINVAL);
252 }
253 str++; /* Skip over leading "[" */
254 *str2 = '\0'; /* Terminate the IPv6 address */
255 str2++; /* Skip over the "]" */
256 port_str = strstr(str2, ":");
257 if (!port_str) {
258 pr_err("Unable to locate \":port\""
259 " in IPv6 iSCSI network portal address\n");
260 return ERR_PTR(-EINVAL);
261 }
262 *port_str = '\0'; /* Terminate string for IP */
263 port_str++; /* Skip over ":" */
264
265 ret = strict_strtoul(port_str, 0, &port);
266 if (ret < 0) {
267 pr_err("strict_strtoul() failed for port_str: %d\n", ret);
268 return ERR_PTR(ret);
269 }
270 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
271 sock_in6->sin6_family = AF_INET6;
272 sock_in6->sin6_port = htons((unsigned short)port);
273 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
274 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
275 if (ret <= 0) {
276 pr_err("in6_pton returned: %d\n", ret);
277 return ERR_PTR(-EINVAL);
278 }
279 } else {
280 str = ip_str = &buf[0];
281 port_str = strstr(ip_str, ":");
282 if (!port_str) {
283 pr_err("Unable to locate \":port\""
284 " in IPv4 iSCSI network portal address\n");
285 return ERR_PTR(-EINVAL);
286 }
287 *port_str = '\0'; /* Terminate string for IP */
288 port_str++; /* Skip over ":" */
289
290 ret = strict_strtoul(port_str, 0, &port);
291 if (ret < 0) {
292 pr_err("strict_strtoul() failed for port_str: %d\n", ret);
293 return ERR_PTR(ret);
294 }
295 sock_in = (struct sockaddr_in *)&sockaddr;
296 sock_in->sin_family = AF_INET;
297 sock_in->sin_port = htons((unsigned short)port);
298 sock_in->sin_addr.s_addr = in_aton(ip_str);
299 }
300 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
301 ret = iscsit_get_tpg(tpg);
302 if (ret < 0)
303 return ERR_PTR(-EINVAL);
304
305 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
306 " PORTAL: %s\n",
307 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
308 tpg->tpgt, name);
309 /*
310 * Assume ISCSI_TCP by default. Other network portals for other
311 * iSCSI fabrics:
312 *
313 * Traditional iSCSI over SCTP (initial support)
314 * iSER/TCP (TODO, hardware available)
315 * iSER/SCTP (TODO, software emulation with osc-iwarp)
316 * iSER/IB (TODO, hardware available)
317 *
20879696 318 * can be enabled with attributes under
e48354ce
NB		 319 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
320 *
321 */
322 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
323 ISCSI_TCP);
324 if (IS_ERR(tpg_np)) {
325 iscsit_put_tpg(tpg);
e1750ba2 326 return ERR_CAST(tpg_np);
e48354ce
NB		 327 }
328 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
329
330 iscsit_put_tpg(tpg);
331 return &tpg_np->se_tpg_np;
332}
333
334static void lio_target_call_delnpfromtpg(
335 struct se_tpg_np *se_tpg_np)
336{
337 struct iscsi_portal_group *tpg;
338 struct iscsi_tpg_np *tpg_np;
339 struct se_portal_group *se_tpg;
340 int ret;
341
342 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
343 tpg = tpg_np->tpg;
344 ret = iscsit_get_tpg(tpg);
345 if (ret < 0)
346 return;
347
348 se_tpg = &tpg->tpg_se_tpg;
349 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
350 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
351 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
352
353 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
354 if (ret < 0)
355 goto out;
356
357 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
358out:
359 iscsit_put_tpg(tpg);
360}
361
362/* End items for lio_target_np_cit */
363
364/* Start items for lio_target_nacl_attrib_cit */
365
366#define DEF_NACL_ATTRIB(name) \
367static ssize_t iscsi_nacl_attrib_show_##name( \
368 struct se_node_acl *se_nacl, \
369 char *page) \
370{ \
371 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
372 se_node_acl); \
373 \
374 return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name); \
375} \
376 \
377static ssize_t iscsi_nacl_attrib_store_##name( \
378 struct se_node_acl *se_nacl, \
379 const char *page, \
380 size_t count) \
381{ \
382 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
383 se_node_acl); \
384 char *endptr; \
385 u32 val; \
386 int ret; \
387 \
388 val = simple_strtoul(page, &endptr, 0); \
389 ret = iscsit_na_##name(nacl, val); \
390 if (ret < 0) \
391 return ret; \
392 \
393 return count; \
394}
395
396#define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
397/*
398 * Define iscsi_node_attrib_s_dataout_timeout
399 */
400DEF_NACL_ATTRIB(dataout_timeout);
401NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
402/*
403 * Define iscsi_node_attrib_s_dataout_timeout_retries
404 */
405DEF_NACL_ATTRIB(dataout_timeout_retries);
406NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
407/*
408 * Define iscsi_node_attrib_s_default_erl
409 */
410DEF_NACL_ATTRIB(default_erl);
411NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
412/*
413 * Define iscsi_node_attrib_s_nopin_timeout
414 */
415DEF_NACL_ATTRIB(nopin_timeout);
416NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
417/*
418 * Define iscsi_node_attrib_s_nopin_response_timeout
419 */
420DEF_NACL_ATTRIB(nopin_response_timeout);
421NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
422/*
423 * Define iscsi_node_attrib_s_random_datain_pdu_offsets
424 */
425DEF_NACL_ATTRIB(random_datain_pdu_offsets);
426NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
427/*
428 * Define iscsi_node_attrib_s_random_datain_seq_offsets
429 */
430DEF_NACL_ATTRIB(random_datain_seq_offsets);
431NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
432/*
433 * Define iscsi_node_attrib_s_random_r2t_offsets
434 */
435DEF_NACL_ATTRIB(random_r2t_offsets);
436NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
437
438static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
439 &iscsi_nacl_attrib_dataout_timeout.attr,
440 &iscsi_nacl_attrib_dataout_timeout_retries.attr,
441 &iscsi_nacl_attrib_default_erl.attr,
442 &iscsi_nacl_attrib_nopin_timeout.attr,
443 &iscsi_nacl_attrib_nopin_response_timeout.attr,
444 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
445 &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
446 &iscsi_nacl_attrib_random_r2t_offsets.attr,
447 NULL,
448};
449
450/* End items for lio_target_nacl_attrib_cit */
451
452/* Start items for lio_target_nacl_auth_cit */
453
454#define __DEF_NACL_AUTH_STR(prefix, name, flags) \
455static ssize_t __iscsi_##prefix##_show_##name( \
456 struct iscsi_node_acl *nacl, \
457 char *page) \
458{ \
459 struct iscsi_node_auth *auth = &nacl->node_auth; \
460 \
461 if (!capable(CAP_SYS_ADMIN)) \
462 return -EPERM; \
463 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
464} \
465 \
466static ssize_t __iscsi_##prefix##_store_##name( \
467 struct iscsi_node_acl *nacl, \
468 const char *page, \
469 size_t count) \
470{ \
471 struct iscsi_node_auth *auth = &nacl->node_auth; \
472 \
473 if (!capable(CAP_SYS_ADMIN)) \
474 return -EPERM; \
475 \
0fbfc46f 476 snprintf(auth->name, sizeof(auth->name), "%s", page); \
e48354ce
NB		 477 if (!strncmp("NULL", auth->name, 4)) \
478 auth->naf_flags &= ~flags; \
479 else \
480 auth->naf_flags |= flags; \
481 \
482 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
483 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
484 auth->authenticate_target = 1; \
485 else \
486 auth->authenticate_target = 0; \
487 \
488 return count; \
489}
490
491#define __DEF_NACL_AUTH_INT(prefix, name) \
492static ssize_t __iscsi_##prefix##_show_##name( \
493 struct iscsi_node_acl *nacl, \
494 char *page) \
495{ \
496 struct iscsi_node_auth *auth = &nacl->node_auth; \
497 \
498 if (!capable(CAP_SYS_ADMIN)) \
499 return -EPERM; \
500 \
501 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
502}
503
504#define DEF_NACL_AUTH_STR(name, flags) \
505 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
506static ssize_t iscsi_nacl_auth_show_##name( \
507 struct se_node_acl *nacl, \
508 char *page) \
509{ \
510 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
511 struct iscsi_node_acl, se_node_acl), page); \
512} \
513static ssize_t iscsi_nacl_auth_store_##name( \
514 struct se_node_acl *nacl, \
515 const char *page, \
516 size_t count) \
517{ \
518 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
519 struct iscsi_node_acl, se_node_acl), page, count); \
520}
521
522#define DEF_NACL_AUTH_INT(name) \
523 __DEF_NACL_AUTH_INT(nacl_auth, name) \
524static ssize_t iscsi_nacl_auth_show_##name( \
525 struct se_node_acl *nacl, \
526 char *page) \
527{ \
528 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
529 struct iscsi_node_acl, se_node_acl), page); \
530}
531
532#define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
533#define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
534
535/*
536 * One-way authentication userid
537 */
538DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
539AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
540/*
541 * One-way authentication password
542 */
543DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
544AUTH_ATTR(password, S_IRUGO | S_IWUSR);
545/*
546 * Enforce mutual authentication
547 */
548DEF_NACL_AUTH_INT(authenticate_target);
549AUTH_ATTR_RO(authenticate_target);
550/*
551 * Mutual authentication userid
552 */
553DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
554AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
555/*
556 * Mutual authentication password
557 */
558DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
559AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
560
561static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
562 &iscsi_nacl_auth_userid.attr,
563 &iscsi_nacl_auth_password.attr,
564 &iscsi_nacl_auth_authenticate_target.attr,
565 &iscsi_nacl_auth_userid_mutual.attr,
566 &iscsi_nacl_auth_password_mutual.attr,
567 NULL,
568};
569
570/* End items for lio_target_nacl_auth_cit */
571
572/* Start items for lio_target_nacl_param_cit */
573
574#define DEF_NACL_PARAM(name) \
575static ssize_t iscsi_nacl_param_show_##name( \
576 struct se_node_acl *se_nacl, \
577 char *page) \
578{ \
579 struct iscsi_session *sess; \
580 struct se_session *se_sess; \
581 ssize_t rb; \
582 \
583 spin_lock_bh(&se_nacl->nacl_sess_lock); \
584 se_sess = se_nacl->nacl_sess; \
585 if (!se_sess) { \
586 rb = snprintf(page, PAGE_SIZE, \
587 "No Active iSCSI Session\n"); \
588 } else { \
589 sess = se_sess->fabric_sess_ptr; \
590 rb = snprintf(page, PAGE_SIZE, "%u\n", \
591 (u32)sess->sess_ops->name); \
592 } \
593 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
594 \
595 return rb; \
596}
597
598#define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
599
600DEF_NACL_PARAM(MaxConnections);
601NACL_PARAM_ATTR(MaxConnections);
602
603DEF_NACL_PARAM(InitialR2T);
604NACL_PARAM_ATTR(InitialR2T);
605
606DEF_NACL_PARAM(ImmediateData);
607NACL_PARAM_ATTR(ImmediateData);
608
609DEF_NACL_PARAM(MaxBurstLength);
610NACL_PARAM_ATTR(MaxBurstLength);
611
612DEF_NACL_PARAM(FirstBurstLength);
613NACL_PARAM_ATTR(FirstBurstLength);
614
615DEF_NACL_PARAM(DefaultTime2Wait);
616NACL_PARAM_ATTR(DefaultTime2Wait);
617
618DEF_NACL_PARAM(DefaultTime2Retain);
619NACL_PARAM_ATTR(DefaultTime2Retain);
620
621DEF_NACL_PARAM(MaxOutstandingR2T);
622NACL_PARAM_ATTR(MaxOutstandingR2T);
623
624DEF_NACL_PARAM(DataPDUInOrder);
625NACL_PARAM_ATTR(DataPDUInOrder);
626
627DEF_NACL_PARAM(DataSequenceInOrder);
628NACL_PARAM_ATTR(DataSequenceInOrder);
629
630DEF_NACL_PARAM(ErrorRecoveryLevel);
631NACL_PARAM_ATTR(ErrorRecoveryLevel);
632
633static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
634 &iscsi_nacl_param_MaxConnections.attr,
635 &iscsi_nacl_param_InitialR2T.attr,
636 &iscsi_nacl_param_ImmediateData.attr,
637 &iscsi_nacl_param_MaxBurstLength.attr,
638 &iscsi_nacl_param_FirstBurstLength.attr,
639 &iscsi_nacl_param_DefaultTime2Wait.attr,
640 &iscsi_nacl_param_DefaultTime2Retain.attr,
641 &iscsi_nacl_param_MaxOutstandingR2T.attr,
642 &iscsi_nacl_param_DataPDUInOrder.attr,
643 &iscsi_nacl_param_DataSequenceInOrder.attr,
644 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
645 NULL,
646};
647
648/* End items for lio_target_nacl_param_cit */
649
650/* Start items for lio_target_acl_cit */
651
652static ssize_t lio_target_nacl_show_info(
653 struct se_node_acl *se_nacl,
654 char *page)
655{
656 struct iscsi_session *sess;
657 struct iscsi_conn *conn;
658 struct se_session *se_sess;
659 ssize_t rb = 0;
660
661 spin_lock_bh(&se_nacl->nacl_sess_lock);
662 se_sess = se_nacl->nacl_sess;
663 if (!se_sess) {
664 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
665 " Endpoint: %s\n", se_nacl->initiatorname);
666 } else {
667 sess = se_sess->fabric_sess_ptr;
668
669 if (sess->sess_ops->InitiatorName)
670 rb += sprintf(page+rb, "InitiatorName: %s\n",
671 sess->sess_ops->InitiatorName);
672 if (sess->sess_ops->InitiatorAlias)
673 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
674 sess->sess_ops->InitiatorAlias);
675
676 rb += sprintf(page+rb, "LIO Session ID: %u "
677 "ISID: 0x%02x %02x %02x %02x %02x %02x "
678 "TSIH: %hu ", sess->sid,
679 sess->isid[0], sess->isid[1], sess->isid[2],
680 sess->isid[3], sess->isid[4], sess->isid[5],
681 sess->tsih);
682 rb += sprintf(page+rb, "SessionType: %s\n",
683 (sess->sess_ops->SessionType) ?
684 "Discovery" : "Normal");
685 rb += sprintf(page+rb, "Session State: ");
686 switch (sess->session_state) {
687 case TARG_SESS_STATE_FREE:
688 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
689 break;
690 case TARG_SESS_STATE_ACTIVE:
691 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
692 break;
693 case TARG_SESS_STATE_LOGGED_IN:
694 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
695 break;
696 case TARG_SESS_STATE_FAILED:
697 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
698 break;
699 case TARG_SESS_STATE_IN_CONTINUE:
700 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
701 break;
702 default:
703 rb += sprintf(page+rb, "ERROR: Unknown Session"
704 " State!\n");
705 break;
706 }
707
708 rb += sprintf(page+rb, "---------------------[iSCSI Session"
709 " Values]-----------------------\n");
710 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
711 " : MaxCmdSN : ITT : TTT\n");
712 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
713 " 0x%08x 0x%08x\n",
714 sess->cmdsn_window,
715 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
716 sess->exp_cmd_sn, sess->max_cmd_sn,
717 sess->init_task_tag, sess->targ_xfer_tag);
718 rb += sprintf(page+rb, "----------------------[iSCSI"
719 " Connections]-------------------------\n");
720
721 spin_lock(&sess->conn_lock);
722 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
723 rb += sprintf(page+rb, "CID: %hu Connection"
724 " State: ", conn->cid);
725 switch (conn->conn_state) {
726 case TARG_CONN_STATE_FREE:
727 rb += sprintf(page+rb,
728 "TARG_CONN_STATE_FREE\n");
729 break;
730 case TARG_CONN_STATE_XPT_UP:
731 rb += sprintf(page+rb,
732 "TARG_CONN_STATE_XPT_UP\n");
733 break;
734 case TARG_CONN_STATE_IN_LOGIN:
735 rb += sprintf(page+rb,
736 "TARG_CONN_STATE_IN_LOGIN\n");
737 break;
738 case TARG_CONN_STATE_LOGGED_IN:
739 rb += sprintf(page+rb,
740 "TARG_CONN_STATE_LOGGED_IN\n");
741 break;
742 case TARG_CONN_STATE_IN_LOGOUT:
743 rb += sprintf(page+rb,
744 "TARG_CONN_STATE_IN_LOGOUT\n");
745 break;
746 case TARG_CONN_STATE_LOGOUT_REQUESTED:
747 rb += sprintf(page+rb,
748 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
749 break;
750 case TARG_CONN_STATE_CLEANUP_WAIT:
751 rb += sprintf(page+rb,
752 "TARG_CONN_STATE_CLEANUP_WAIT\n");
753 break;
754 default:
755 rb += sprintf(page+rb,
756 "ERROR: Unknown Connection State!\n");
757 break;
758 }
759
760 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
761 (conn->network_transport == ISCSI_TCP) ?
762 "TCP" : "SCTP");
763 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
764 conn->stat_sn);
765 }
766 spin_unlock(&sess->conn_lock);
767 }
768 spin_unlock_bh(&se_nacl->nacl_sess_lock);
769
770 return rb;
771}
772
773TF_NACL_BASE_ATTR_RO(lio_target, info);
774
775static ssize_t lio_target_nacl_show_cmdsn_depth(
776 struct se_node_acl *se_nacl,
777 char *page)
778{
779 return sprintf(page, "%u\n", se_nacl->queue_depth);
780}
781
782static ssize_t lio_target_nacl_store_cmdsn_depth(
783 struct se_node_acl *se_nacl,
784 const char *page,
785 size_t count)
786{
787 struct se_portal_group *se_tpg = se_nacl->se_tpg;
788 struct iscsi_portal_group *tpg = container_of(se_tpg,
789 struct iscsi_portal_group, tpg_se_tpg);
790 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
791 char *endptr;
792 u32 cmdsn_depth = 0;
793 int ret;
794
795 cmdsn_depth = simple_strtoul(page, &endptr, 0);
796 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
797 pr_err("Passed cmdsn_depth: %u exceeds"
798 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
799 TA_DEFAULT_CMDSN_DEPTH_MAX);
800 return -EINVAL;
801 }
802 acl_ci = &se_nacl->acl_group.cg_item;
803 if (!acl_ci) {
804 pr_err("Unable to locatel acl_ci\n");
805 return -EINVAL;
806 }
807 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
808 if (!tpg_ci) {
809 pr_err("Unable to locate tpg_ci\n");
810 return -EINVAL;
811 }
812 wwn_ci = &tpg_ci->ci_group->cg_item;
813 if (!wwn_ci) {
814 pr_err("Unable to locate config_item wwn_ci\n");
815 return -EINVAL;
816 }
817
818 if (iscsit_get_tpg(tpg) < 0)
819 return -EINVAL;
820 /*
821 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
822 */
823 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
824 config_item_name(acl_ci), cmdsn_depth, 1);
825
826 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
827 "InitiatorName: %s\n", config_item_name(wwn_ci),
828 config_item_name(tpg_ci), cmdsn_depth,
829 config_item_name(acl_ci));
830
831 iscsit_put_tpg(tpg);
832 return (!ret) ? count : (ssize_t)ret;
833}
834
835TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
836
79e62fc3
AG		 837static ssize_t lio_target_nacl_show_tag(
838 struct se_node_acl *se_nacl,
839 char *page)
840{
841 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
842}
843
844static ssize_t lio_target_nacl_store_tag(
845 struct se_node_acl *se_nacl,
846 const char *page,
847 size_t count)
848{
849 int ret;
850
851 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
852
853 if (ret < 0)
854 return ret;
855 return count;
856}
857
858TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
859
e48354ce
NB		 860static struct configfs_attribute *lio_target_initiator_attrs[] = {
861 &lio_target_nacl_info.attr,
862 &lio_target_nacl_cmdsn_depth.attr,
79e62fc3 863 &lio_target_nacl_tag.attr,
e48354ce
NB		 864 NULL,
865};
866
867static struct se_node_acl *lio_tpg_alloc_fabric_acl(
868 struct se_portal_group *se_tpg)
869{
870 struct iscsi_node_acl *acl;
871
872 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
873 if (!acl) {
874 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
875 return NULL;
876 }
877
878 return &acl->se_node_acl;
879}
880
881static struct se_node_acl *lio_target_make_nodeacl(
882 struct se_portal_group *se_tpg,
883 struct config_group *group,
884 const char *name)
885{
886 struct config_group *stats_cg;
887 struct iscsi_node_acl *acl;
888 struct se_node_acl *se_nacl_new, *se_nacl;
889 struct iscsi_portal_group *tpg = container_of(se_tpg,
890 struct iscsi_portal_group, tpg_se_tpg);
891 u32 cmdsn_depth;
892
893 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
894 if (!se_nacl_new)
895 return ERR_PTR(-ENOMEM);
896
e48354ce
NB		 897 cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
898 /*
899 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
900 * when converting a NdoeACL from demo mode -> explict
901 */
902 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
903 name, cmdsn_depth);
904 if (IS_ERR(se_nacl))
905 return se_nacl;
906
d0628334
NB		 907 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
908 stats_cg = &se_nacl->acl_fabric_stat_group;
e48354ce 909
13f6a914 910 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
e48354ce
NB		 911 GFP_KERNEL);
912 if (!stats_cg->default_groups) {
913 pr_err("Unable to allocate memory for"
914 " stats_cg->default_groups\n");
915 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
916 kfree(acl);
917 return ERR_PTR(-ENOMEM);
918 }
919
920 stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
921 stats_cg->default_groups[1] = NULL;
922 config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
923 "iscsi_sess_stats", &iscsi_stat_sess_cit);
924
925 return se_nacl;
926}
927
928static void lio_target_drop_nodeacl(
929 struct se_node_acl *se_nacl)
930{
931 struct se_portal_group *se_tpg = se_nacl->se_tpg;
932 struct iscsi_node_acl *acl = container_of(se_nacl,
933 struct iscsi_node_acl, se_node_acl);
934 struct config_item *df_item;
935 struct config_group *stats_cg;
936 int i;
937
938 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
939 for (i = 0; stats_cg->default_groups[i]; i++) {
940 df_item = &stats_cg->default_groups[i]->cg_item;
941 stats_cg->default_groups[i] = NULL;
942 config_item_put(df_item);
943 }
944 kfree(stats_cg->default_groups);
945
946 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
947 kfree(acl);
948}
949
950/* End items for lio_target_acl_cit */
951
952/* Start items for lio_target_tpg_attrib_cit */
953
954#define DEF_TPG_ATTRIB(name) \
955 \
956static ssize_t iscsi_tpg_attrib_show_##name( \
957 struct se_portal_group *se_tpg, \
958 char *page) \
959{ \
960 struct iscsi_portal_group *tpg = container_of(se_tpg, \
961 struct iscsi_portal_group, tpg_se_tpg); \
962 ssize_t rb; \
963 \
964 if (iscsit_get_tpg(tpg) < 0) \
965 return -EINVAL; \
966 \
967 rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name); \
968 iscsit_put_tpg(tpg); \
969 return rb; \
970} \
971 \
972static ssize_t iscsi_tpg_attrib_store_##name( \
973 struct se_portal_group *se_tpg, \
974 const char *page, \
975 size_t count) \
976{ \
977 struct iscsi_portal_group *tpg = container_of(se_tpg, \
978 struct iscsi_portal_group, tpg_se_tpg); \
979 char *endptr; \
980 u32 val; \
981 int ret; \
982 \
983 if (iscsit_get_tpg(tpg) < 0) \
984 return -EINVAL; \
985 \
986 val = simple_strtoul(page, &endptr, 0); \
987 ret = iscsit_ta_##name(tpg, val); \
988 if (ret < 0) \
989 goto out; \
990 \
991 iscsit_put_tpg(tpg); \
992 return count; \
993out: \
994 iscsit_put_tpg(tpg); \
995 return ret; \
996}
997
998#define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
999
1000/*
1001 * Define iscsi_tpg_attrib_s_authentication
1002 */
1003DEF_TPG_ATTRIB(authentication);
1004TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1005/*
1006 * Define iscsi_tpg_attrib_s_login_timeout
1007 */
1008DEF_TPG_ATTRIB(login_timeout);
1009TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1010/*
1011 * Define iscsi_tpg_attrib_s_netif_timeout
1012 */
1013DEF_TPG_ATTRIB(netif_timeout);
1014TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1015/*
1016 * Define iscsi_tpg_attrib_s_generate_node_acls
1017 */
1018DEF_TPG_ATTRIB(generate_node_acls);
1019TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1020/*
1021 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1022 */
1023DEF_TPG_ATTRIB(default_cmdsn_depth);
1024TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1025/*
1026 Define iscsi_tpg_attrib_s_cache_dynamic_acls
1027 */
1028DEF_TPG_ATTRIB(cache_dynamic_acls);
1029TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1030/*
1031 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1032 */
1033DEF_TPG_ATTRIB(demo_mode_write_protect);
1034TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1035/*
1036 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1037 */
1038DEF_TPG_ATTRIB(prod_mode_write_protect);
1039TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1040
1041static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1042 &iscsi_tpg_attrib_authentication.attr,
1043 &iscsi_tpg_attrib_login_timeout.attr,
1044 &iscsi_tpg_attrib_netif_timeout.attr,
1045 &iscsi_tpg_attrib_generate_node_acls.attr,
1046 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1047 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1048 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1049 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1050 NULL,
1051};
1052
1053/* End items for lio_target_tpg_attrib_cit */
1054
c3e51442
NB		 1055/* Start items for lio_target_tpg_auth_cit */
1056
1057#define __DEF_TPG_AUTH_STR(prefix, name, flags) \
1058static ssize_t __iscsi_##prefix##_show_##name( \
1059 struct se_portal_group *se_tpg, \
1060 char *page) \
1061{ \
1062 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1063 struct iscsi_portal_group, tpg_se_tpg); \
1064 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1065 \
1066 if (!capable(CAP_SYS_ADMIN)) \
1067 return -EPERM; \
1068 \
1069 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
1070} \
1071 \
1072static ssize_t __iscsi_##prefix##_store_##name( \
1073 struct se_portal_group *se_tpg, \
1074 const char *page, \
1075 size_t count) \
1076{ \
1077 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1078 struct iscsi_portal_group, tpg_se_tpg); \
1079 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1080 \
1081 if (!capable(CAP_SYS_ADMIN)) \
1082 return -EPERM; \
1083 \
1084 snprintf(auth->name, PAGE_SIZE, "%s", page); \
1085 if (!(strncmp("NULL", auth->name, 4))) \
1086 auth->naf_flags &= ~flags; \
1087 else \
1088 auth->naf_flags |= flags; \
1089 \
1090 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
1091 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
1092 auth->authenticate_target = 1; \
1093 else \
1094 auth->authenticate_target = 0; \
1095 \
1096 return count; \
1097}
1098
1099#define __DEF_TPG_AUTH_INT(prefix, name) \
1100static ssize_t __iscsi_##prefix##_show_##name( \
1101 struct se_portal_group *se_tpg, \
1102 char *page) \
1103{ \
1104 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1105 struct iscsi_portal_group, tpg_se_tpg); \
1106 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1107 \
1108 if (!capable(CAP_SYS_ADMIN)) \
1109 return -EPERM; \
1110 \
1111 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
1112}
1113
1114#define DEF_TPG_AUTH_STR(name, flags) \
1115 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
1116static ssize_t iscsi_tpg_auth_show_##name( \
1117 struct se_portal_group *se_tpg, \
1118 char *page) \
1119{ \
1120 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1121} \
1122 \
1123static ssize_t iscsi_tpg_auth_store_##name( \
1124 struct se_portal_group *se_tpg, \
1125 const char *page, \
1126 size_t count) \
1127{ \
1128 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \
1129}
1130
1131#define DEF_TPG_AUTH_INT(name) \
1132 __DEF_TPG_AUTH_INT(tpg_auth, name) \
1133static ssize_t iscsi_tpg_auth_show_##name( \
1134 struct se_portal_group *se_tpg, \
1135 char *page) \
1136{ \
1137 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1138}
1139
1140#define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1141#define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1142
1143/*
1144 * * One-way authentication userid
1145 * */
1146DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1147TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1148/*
1149 * * One-way authentication password
1150 * */
1151DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1152TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1153/*
1154 * * Enforce mutual authentication
1155 * */
1156DEF_TPG_AUTH_INT(authenticate_target);
1157TPG_AUTH_ATTR_RO(authenticate_target);
1158/*
1159 * * Mutual authentication userid
1160 * */
1161DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1162TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1163/*
1164 * * Mutual authentication password
1165 * */
1166DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1167TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1168
1169static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1170 &iscsi_tpg_auth_userid.attr,
1171 &iscsi_tpg_auth_password.attr,
1172 &iscsi_tpg_auth_authenticate_target.attr,
1173 &iscsi_tpg_auth_userid_mutual.attr,
1174 &iscsi_tpg_auth_password_mutual.attr,
1175 NULL,
1176};
1177
1178/* End items for lio_target_tpg_auth_cit */
1179
e48354ce
NB		 1180/* Start items for lio_target_tpg_param_cit */
1181
1182#define DEF_TPG_PARAM(name) \
1183static ssize_t iscsi_tpg_param_show_##name( \
1184 struct se_portal_group *se_tpg, \
1185 char *page) \
1186{ \
1187 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1188 struct iscsi_portal_group, tpg_se_tpg); \
1189 struct iscsi_param *param; \
1190 ssize_t rb; \
1191 \
1192 if (iscsit_get_tpg(tpg) < 0) \
1193 return -EINVAL; \
1194 \
1195 param = iscsi_find_param_from_key(__stringify(name), \
1196 tpg->param_list); \
1197 if (!param) { \
1198 iscsit_put_tpg(tpg); \
1199 return -EINVAL; \
1200 } \
1201 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1202 \
1203 iscsit_put_tpg(tpg); \
1204 return rb; \
1205} \
1206static ssize_t iscsi_tpg_param_store_##name( \
1207 struct se_portal_group *se_tpg, \
1208 const char *page, \
1209 size_t count) \
1210{ \
1211 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1212 struct iscsi_portal_group, tpg_se_tpg); \
1213 char *buf; \
1214 int ret; \
1215 \
1216 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1217 if (!buf) \
1218 return -ENOMEM; \
1219 snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1220 buf[strlen(buf)-1] = '\0'; /* Kill newline */ \
1221 \
1222 if (iscsit_get_tpg(tpg) < 0) { \
1223 kfree(buf); \
1224 return -EINVAL; \
1225 } \
1226 \
1227 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1228 if (ret < 0) \
1229 goto out; \
1230 \
1231 kfree(buf); \
1232 iscsit_put_tpg(tpg); \
1233 return count; \
1234out: \
1235 kfree(buf); \
1236 iscsit_put_tpg(tpg); \
1237 return -EINVAL; \
1238}
1239
1240#define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1241
1242DEF_TPG_PARAM(AuthMethod);
1243TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1244
1245DEF_TPG_PARAM(HeaderDigest);
1246TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1247
1248DEF_TPG_PARAM(DataDigest);
1249TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1250
1251DEF_TPG_PARAM(MaxConnections);
1252TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1253
1254DEF_TPG_PARAM(TargetAlias);
1255TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1256
1257DEF_TPG_PARAM(InitialR2T);
1258TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1259
1260DEF_TPG_PARAM(ImmediateData);
1261TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1262
1263DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1264TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1265
e004cb25
NB		 1266DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1267TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1268
e48354ce
NB		 1269DEF_TPG_PARAM(MaxBurstLength);
1270TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1271
1272DEF_TPG_PARAM(FirstBurstLength);
1273TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1274
1275DEF_TPG_PARAM(DefaultTime2Wait);
1276TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1277
1278DEF_TPG_PARAM(DefaultTime2Retain);
1279TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1280
1281DEF_TPG_PARAM(MaxOutstandingR2T);
1282TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1283
1284DEF_TPG_PARAM(DataPDUInOrder);
1285TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1286
1287DEF_TPG_PARAM(DataSequenceInOrder);
1288TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1289
1290DEF_TPG_PARAM(ErrorRecoveryLevel);
1291TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1292
1293DEF_TPG_PARAM(IFMarker);
1294TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1295
1296DEF_TPG_PARAM(OFMarker);
1297TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1298
1299DEF_TPG_PARAM(IFMarkInt);
1300TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1301
1302DEF_TPG_PARAM(OFMarkInt);
1303TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1304
1305static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1306 &iscsi_tpg_param_AuthMethod.attr,
1307 &iscsi_tpg_param_HeaderDigest.attr,
1308 &iscsi_tpg_param_DataDigest.attr,
1309 &iscsi_tpg_param_MaxConnections.attr,
1310 &iscsi_tpg_param_TargetAlias.attr,
1311 &iscsi_tpg_param_InitialR2T.attr,
1312 &iscsi_tpg_param_ImmediateData.attr,
1313 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
e004cb25 1314 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
e48354ce
NB		 1315 &iscsi_tpg_param_MaxBurstLength.attr,
1316 &iscsi_tpg_param_FirstBurstLength.attr,
1317 &iscsi_tpg_param_DefaultTime2Wait.attr,
1318 &iscsi_tpg_param_DefaultTime2Retain.attr,
1319 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1320 &iscsi_tpg_param_DataPDUInOrder.attr,
1321 &iscsi_tpg_param_DataSequenceInOrder.attr,
1322 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1323 &iscsi_tpg_param_IFMarker.attr,
1324 &iscsi_tpg_param_OFMarker.attr,
1325 &iscsi_tpg_param_IFMarkInt.attr,
1326 &iscsi_tpg_param_OFMarkInt.attr,
1327 NULL,
1328};
1329
1330/* End items for lio_target_tpg_param_cit */
1331
1332/* Start items for lio_target_tpg_cit */
1333
1334static ssize_t lio_target_tpg_show_enable(
1335 struct se_portal_group *se_tpg,
1336 char *page)
1337{
1338 struct iscsi_portal_group *tpg = container_of(se_tpg,
1339 struct iscsi_portal_group, tpg_se_tpg);
1340 ssize_t len;
1341
1342 spin_lock(&tpg->tpg_state_lock);
1343 len = sprintf(page, "%d\n",
1344 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1345 spin_unlock(&tpg->tpg_state_lock);
1346
1347 return len;
1348}
1349
1350static ssize_t lio_target_tpg_store_enable(
1351 struct se_portal_group *se_tpg,
1352 const char *page,
1353 size_t count)
1354{
1355 struct iscsi_portal_group *tpg = container_of(se_tpg,
1356 struct iscsi_portal_group, tpg_se_tpg);
1357 char *endptr;
1358 u32 op;
1359 int ret = 0;
1360
1361 op = simple_strtoul(page, &endptr, 0);
1362 if ((op != 1) && (op != 0)) {
1363 pr_err("Illegal value for tpg_enable: %u\n", op);
1364 return -EINVAL;
1365 }
1366
1367 ret = iscsit_get_tpg(tpg);
1368 if (ret < 0)
1369 return -EINVAL;
1370
1371 if (op) {
1372 ret = iscsit_tpg_enable_portal_group(tpg);
1373 if (ret < 0)
1374 goto out;
1375 } else {
1376 /*
1377 * iscsit_tpg_disable_portal_group() assumes force=1
1378 */
1379 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1380 if (ret < 0)
1381 goto out;
1382 }
1383
1384 iscsit_put_tpg(tpg);
1385 return count;
1386out:
1387 iscsit_put_tpg(tpg);
1388 return -EINVAL;
1389}
1390
1391TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1392
1393static struct configfs_attribute *lio_target_tpg_attrs[] = {
1394 &lio_target_tpg_enable.attr,
1395 NULL,
1396};
1397
1398/* End items for lio_target_tpg_cit */
1399
1400/* Start items for lio_target_tiqn_cit */
1401
fceb5bc7 1402static struct se_portal_group *lio_target_tiqn_addtpg(
e48354ce
NB		 1403 struct se_wwn *wwn,
1404 struct config_group *group,
1405 const char *name)
1406{
1407 struct iscsi_portal_group *tpg;
1408 struct iscsi_tiqn *tiqn;
1409 char *tpgt_str, *end_ptr;
1410 int ret = 0;
1411 unsigned short int tpgt;
1412
1413 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1414 /*
1415 * Only tpgt_# directory groups can be created below
1416 * target/iscsi/iqn.superturodiskarry/
1417 */
1418 tpgt_str = strstr(name, "tpgt_");
1419 if (!tpgt_str) {
1420 pr_err("Unable to locate \"tpgt_#\" directory"
1421 " group\n");
1422 return NULL;
1423 }
1424 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1425 tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1426
1427 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1428 if (!tpg)
1429 return NULL;
1430
1431 ret = core_tpg_register(
1432 &lio_target_fabric_configfs->tf_ops,
8359cf43 1433 wwn, &tpg->tpg_se_tpg, tpg,
e48354ce
NB		 1434 TRANSPORT_TPG_TYPE_NORMAL);
1435 if (ret < 0)
1436 return NULL;
1437
1438 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1439 if (ret != 0)
1440 goto out;
1441
1442 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1443 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1444 name);
1445 return &tpg->tpg_se_tpg;
1446out:
1447 core_tpg_deregister(&tpg->tpg_se_tpg);
1448 kfree(tpg);
1449 return NULL;
1450}
1451
fceb5bc7 1452static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
e48354ce
NB		 1453{
1454 struct iscsi_portal_group *tpg;
1455 struct iscsi_tiqn *tiqn;
1456
1457 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1458 tiqn = tpg->tpg_tiqn;
1459 /*
1460 * iscsit_tpg_del_portal_group() assumes force=1
1461 */
1462 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1463 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1464}
1465
1466/* End items for lio_target_tiqn_cit */
1467
1468/* Start LIO-Target TIQN struct contig_item lio_target_cit */
1469
1470static ssize_t lio_target_wwn_show_attr_lio_version(
1471 struct target_fabric_configfs *tf,
1472 char *page)
1473{
1474 return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1475}
1476
1477TF_WWN_ATTR_RO(lio_target, lio_version);
1478
1479static struct configfs_attribute *lio_target_wwn_attrs[] = {
1480 &lio_target_wwn_lio_version.attr,
1481 NULL,
1482};
1483
fceb5bc7 1484static struct se_wwn *lio_target_call_coreaddtiqn(
e48354ce
NB		 1485 struct target_fabric_configfs *tf,
1486 struct config_group *group,
1487 const char *name)
1488{
1489 struct config_group *stats_cg;
1490 struct iscsi_tiqn *tiqn;
1491
1492 tiqn = iscsit_add_tiqn((unsigned char *)name);
1493 if (IS_ERR(tiqn))
e1750ba2 1494 return ERR_CAST(tiqn);
e48354ce
NB		 1495 /*
1496 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1497 */
1498 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1499
13f6a914 1500 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
e48354ce
NB		 1501 GFP_KERNEL);
1502 if (!stats_cg->default_groups) {
1503 pr_err("Unable to allocate memory for"
1504 " stats_cg->default_groups\n");
1505 iscsit_del_tiqn(tiqn);
1506 return ERR_PTR(-ENOMEM);
1507 }
1508
1509 stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1510 stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1511 stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1512 stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1513 stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1514 stats_cg->default_groups[5] = NULL;
1515 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1516 "iscsi_instance", &iscsi_stat_instance_cit);
1517 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1518 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1519 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1520 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1521 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1522 "iscsi_login_stats", &iscsi_stat_login_cit);
1523 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1524 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1525
1526 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1527 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1528 " %s\n", name);
1529 return &tiqn->tiqn_wwn;
1530}
1531
fceb5bc7 1532static void lio_target_call_coredeltiqn(
e48354ce
NB		 1533 struct se_wwn *wwn)
1534{
1535 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1536 struct config_item *df_item;
1537 struct config_group *stats_cg;
1538 int i;
1539
1540 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1541 for (i = 0; stats_cg->default_groups[i]; i++) {
1542 df_item = &stats_cg->default_groups[i]->cg_item;
1543 stats_cg->default_groups[i] = NULL;
1544 config_item_put(df_item);
1545 }
1546 kfree(stats_cg->default_groups);
1547
1548 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1549 tiqn->tiqn);
1550 iscsit_del_tiqn(tiqn);
1551}
1552
1553/* End LIO-Target TIQN struct contig_lio_target_cit */
1554
1555/* Start lio_target_discovery_auth_cit */
1556
1557#define DEF_DISC_AUTH_STR(name, flags) \
1558 __DEF_NACL_AUTH_STR(disc, name, flags) \
1559static ssize_t iscsi_disc_show_##name( \
1560 struct target_fabric_configfs *tf, \
1561 char *page) \
1562{ \
1563 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1564 page); \
1565} \
1566static ssize_t iscsi_disc_store_##name( \
1567 struct target_fabric_configfs *tf, \
1568 const char *page, \
1569 size_t count) \
1570{ \
1571 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1572 page, count); \
1573}
1574
1575#define DEF_DISC_AUTH_INT(name) \
1576 __DEF_NACL_AUTH_INT(disc, name) \
1577static ssize_t iscsi_disc_show_##name( \
1578 struct target_fabric_configfs *tf, \
1579 char *page) \
1580{ \
1581 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1582 page); \
1583}
1584
1585#define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1586#define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1587
1588/*
1589 * One-way authentication userid
1590 */
1591DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1592DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1593/*
1594 * One-way authentication password
1595 */
1596DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1597DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1598/*
1599 * Enforce mutual authentication
1600 */
1601DEF_DISC_AUTH_INT(authenticate_target);
1602DISC_AUTH_ATTR_RO(authenticate_target);
1603/*
1604 * Mutual authentication userid
1605 */
1606DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1607DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1608/*
1609 * Mutual authentication password
1610 */
1611DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1612DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1613
1614/*
1615 * enforce_discovery_auth
1616 */
1617static ssize_t iscsi_disc_show_enforce_discovery_auth(
1618 struct target_fabric_configfs *tf,
1619 char *page)
1620{
1621 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1622
1623 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1624}
1625
1626static ssize_t iscsi_disc_store_enforce_discovery_auth(
1627 struct target_fabric_configfs *tf,
1628 const char *page,
1629 size_t count)
1630{
1631 struct iscsi_param *param;
1632 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1633 char *endptr;
1634 u32 op;
1635
1636 op = simple_strtoul(page, &endptr, 0);
1637 if ((op != 1) && (op != 0)) {
1638 pr_err("Illegal value for enforce_discovery_auth:"
1639 " %u\n", op);
1640 return -EINVAL;
1641 }
1642
1643 if (!discovery_tpg) {
1644 pr_err("iscsit_global->discovery_tpg is NULL\n");
1645 return -EINVAL;
1646 }
1647
1648 param = iscsi_find_param_from_key(AUTHMETHOD,
1649 discovery_tpg->param_list);
1650 if (!param)
1651 return -EINVAL;
1652
1653 if (op) {
1654 /*
1655 * Reset the AuthMethod key to CHAP.
1656 */
1657 if (iscsi_update_param_value(param, CHAP) < 0)
1658 return -EINVAL;
1659
1660 discovery_tpg->tpg_attrib.authentication = 1;
1661 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1662 pr_debug("LIO-CORE[0] Successfully enabled"
1663 " authentication enforcement for iSCSI"
1664 " Discovery TPG\n");
1665 } else {
1666 /*
1667 * Reset the AuthMethod key to CHAP,None
1668 */
1669 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1670 return -EINVAL;
1671
1672 discovery_tpg->tpg_attrib.authentication = 0;
1673 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1674 pr_debug("LIO-CORE[0] Successfully disabled"
1675 " authentication enforcement for iSCSI"
1676 " Discovery TPG\n");
1677 }
1678
1679 return count;
1680}
1681
1682DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1683
1684static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1685 &iscsi_disc_userid.attr,
1686 &iscsi_disc_password.attr,
1687 &iscsi_disc_authenticate_target.attr,
1688 &iscsi_disc_userid_mutual.attr,
1689 &iscsi_disc_password_mutual.attr,
1690 &iscsi_disc_enforce_discovery_auth.attr,
1691 NULL,
1692};
1693
1694/* End lio_target_discovery_auth_cit */
1695
1696/* Start functions for target_core_fabric_ops */
1697
1698static char *iscsi_get_fabric_name(void)
1699{
1700 return "iSCSI";
1701}
1702
1703static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1704{
1705 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1706
66c7db68
CH		 1707 /* only used for printks or comparism with ->ref_task_tag */
1708 return (__force u32)cmd->init_task_tag;
e48354ce
NB		 1709}
1710
1711static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1712{
1713 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1714
1715 return cmd->i_state;
1716}
1717
e48354ce
NB		 1718static u32 lio_sess_get_index(struct se_session *se_sess)
1719{
1720 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1721
1722 return sess->session_index;
1723}
1724
1725static u32 lio_sess_get_initiator_sid(
1726 struct se_session *se_sess,
1727 unsigned char *buf,
1728 u32 size)
1729{
1730 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1731 /*
1732 * iSCSI Initiator Session Identifier from RFC-3720.
1733 */
1734 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1735 sess->isid[0], sess->isid[1], sess->isid[2],
1736 sess->isid[3], sess->isid[4], sess->isid[5]);
1737}
1738
1739static int lio_queue_data_in(struct se_cmd *se_cmd)
1740{
1741 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1742
1743 cmd->i_state = ISTATE_SEND_DATAIN;
2ec5a8c1
NB		 1744 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1745
e48354ce
NB		 1746 return 0;
1747}
1748
1749static int lio_write_pending(struct se_cmd *se_cmd)
1750{
1751 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
3e1c81a9 1752 struct iscsi_conn *conn = cmd->conn;
e48354ce
NB		 1753
1754 if (!cmd->immediate_data && !cmd->unsolicited_data)
3e1c81a9 1755 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
e48354ce
NB		 1756
1757 return 0;
1758}
1759
1760static int lio_write_pending_status(struct se_cmd *se_cmd)
1761{
1762 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1763 int ret;
1764
1765 spin_lock_bh(&cmd->istate_lock);
1766 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1767 spin_unlock_bh(&cmd->istate_lock);
1768
1769 return ret;
1770}
1771
1772static int lio_queue_status(struct se_cmd *se_cmd)
1773{
1774 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1775
1776 cmd->i_state = ISTATE_SEND_STATUS;
2ec5a8c1
NB		 1777 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1778
e48354ce
NB		 1779 return 0;
1780}
1781
e48354ce
NB		 1782static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1783{
1784 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1785
1786 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1787 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1788 return 0;
1789}
1790
1791static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1792{
1793 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1794
1795 return &tpg->tpg_tiqn->tiqn[0];
1796}
1797
1798static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1799{
1800 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1801
1802 return tpg->tpgt;
1803}
1804
1805static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1806{
1807 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1808
1809 return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1810}
1811
1812static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1813{
1814 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1815
1816 return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1817}
1818
1819static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1820{
1821 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1822
1823 return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1824}
1825
1826static int lio_tpg_check_demo_mode_write_protect(
1827 struct se_portal_group *se_tpg)
1828{
1829 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1830
1831 return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1832}
1833
1834static int lio_tpg_check_prod_mode_write_protect(
1835 struct se_portal_group *se_tpg)
1836{
1837 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1838
1839 return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1840}
1841
1842static void lio_tpg_release_fabric_acl(
1843 struct se_portal_group *se_tpg,
1844 struct se_node_acl *se_acl)
1845{
1846 struct iscsi_node_acl *acl = container_of(se_acl,
1847 struct iscsi_node_acl, se_node_acl);
1848 kfree(acl);
1849}
1850
1851/*
1852 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1853 *
1854 * Also, this function calls iscsit_inc_session_usage_count() on the
1855 * struct iscsi_session in question.
1856 */
1857static int lio_tpg_shutdown_session(struct se_session *se_sess)
1858{
1859 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1860
1861 spin_lock(&sess->conn_lock);
1862 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1863 atomic_read(&sess->session_logout) ||
1864 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1865 spin_unlock(&sess->conn_lock);
1866 return 0;
1867 }
1868 atomic_set(&sess->session_reinstatement, 1);
1869 spin_unlock(&sess->conn_lock);
1870
e48354ce 1871 iscsit_stop_time2retain_timer(sess);
99367f01 1872 iscsit_stop_session(sess, 1, 1);
e48354ce
NB		 1873
1874 return 1;
1875}
1876
1877/*
1878 * Calls iscsit_dec_session_usage_count() as inverse of
1879 * lio_tpg_shutdown_session()
1880 */
1881static void lio_tpg_close_session(struct se_session *se_sess)
1882{
1883 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1884 /*
1885 * If the iSCSI Session for the iSCSI Initiator Node exists,
1886 * forcefully shutdown the iSCSI NEXUS.
1887 */
e48354ce
NB		 1888 iscsit_close_session(sess);
1889}
1890
e48354ce
NB		 1891static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1892{
1893 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1894
1895 return tpg->tpg_tiqn->tiqn_index;
1896}
1897
1898static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1899{
1900 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1901 se_node_acl);
1902
1903 ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1904 iscsit_set_default_node_attribues(acl);
1905}
1906
3e1c81a9
NB		 1907static int lio_check_stop_free(struct se_cmd *se_cmd)
1908{
1909 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1910}
1911
e48354ce
NB		 1912static void lio_release_cmd(struct se_cmd *se_cmd)
1913{
1914 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1915
cdb72665
NB		 1916 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1917 cmd->release_cmd(cmd);
e48354ce
NB		 1918}
1919
1920/* End functions for target_core_fabric_ops */
1921
1922int iscsi_target_register_configfs(void)
1923{
1924 struct target_fabric_configfs *fabric;
1925 int ret;
1926
1927 lio_target_fabric_configfs = NULL;
1928 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1929 if (IS_ERR(fabric)) {
1930 pr_err("target_fabric_configfs_init() for"
1931 " LIO-Target failed!\n");
1932 return PTR_ERR(fabric);
1933 }
1934 /*
1935 * Setup the fabric API of function pointers used by target_core_mod..
1936 */
1937 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1938 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1939 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1940 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1941 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1942 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1943 fabric->tf_ops.tpg_get_pr_transport_id_len =
1944 &iscsi_get_pr_transport_id_len;
1945 fabric->tf_ops.tpg_parse_pr_out_transport_id =
1946 &iscsi_parse_pr_out_transport_id;
1947 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1948 fabric->tf_ops.tpg_check_demo_mode_cache =
1949 &lio_tpg_check_demo_mode_cache;
1950 fabric->tf_ops.tpg_check_demo_mode_write_protect =
1951 &lio_tpg_check_demo_mode_write_protect;
1952 fabric->tf_ops.tpg_check_prod_mode_write_protect =
1953 &lio_tpg_check_prod_mode_write_protect;
1954 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1955 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1956 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
3e1c81a9 1957 fabric->tf_ops.check_stop_free = &lio_check_stop_free,
e48354ce
NB		 1958 fabric->tf_ops.release_cmd = &lio_release_cmd;
1959 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1960 fabric->tf_ops.close_session = &lio_tpg_close_session;
e48354ce
NB		 1961 fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1962 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1963 fabric->tf_ops.write_pending = &lio_write_pending;
1964 fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1965 fabric->tf_ops.set_default_node_attributes =
1966 &lio_set_default_node_attributes;
1967 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1968 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1969 fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1970 fabric->tf_ops.queue_status = &lio_queue_status;
1971 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
e48354ce
NB		 1972 /*
1973 * Setup function pointers for generic logic in target_core_fabric_configfs.c
1974 */
1975 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1976 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1977 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1978 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1979 fabric->tf_ops.fabric_post_link = NULL;
1980 fabric->tf_ops.fabric_pre_unlink = NULL;
1981 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1982 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1983 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1984 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1985 /*
1986 * Setup default attribute lists for various fabric->tf_cit_tmpl
1987 * sturct config_item_type's
1988 */
1989 TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1990 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1991 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1992 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
c3e51442 1993 TF_CIT_TMPL(fabric)->tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
e48354ce
NB		 1994 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1995 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1996 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1997 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1998 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1999 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2000
2001 ret = target_fabric_configfs_register(fabric);
2002 if (ret < 0) {
2003 pr_err("target_fabric_configfs_register() for"
2004 " LIO-Target failed!\n");
2005 target_fabric_configfs_free(fabric);
2006 return ret;
2007 }
2008
2009 lio_target_fabric_configfs = fabric;
2010 pr_debug("LIO_TARGET[0] - Set fabric ->"
2011 " lio_target_fabric_configfs\n");
2012 return 0;
2013}
2014
2015
2016void iscsi_target_deregister_configfs(void)
2017{
2018 if (!lio_target_fabric_configfs)
2019 return;
2020 /*
2021 * Shutdown discovery sessions and disable discovery TPG
2022 */
2023 if (iscsit_global->discovery_tpg)
2024 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2025
2026 target_fabric_configfs_deregister(lio_target_fabric_configfs);
2027 lio_target_fabric_configfs = NULL;
2028 pr_debug("LIO_TARGET[0] - Cleared"
2029 " lio_target_fabric_configfs\n");
2030}
Linux 6.x block layer and io_uring tree(s)