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iscsi-target: Fix potential dead-lock during node acl delete
[GitHub/mt8127/android_kernel_alcatel_ttab.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;
58bd0c69 158 int rc = 0;
72438cdd
NB		 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) {
58bd0c69
AG		 177 rc = request_module("ib_isert");
178 if (rc != 0) {
72438cdd 179 pr_warn("Unable to request_module for ib_isert\n");
58bd0c69
AG		 180 rc = 0;
181 }
72438cdd
NB		 182
183 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
184 np->np_ip, tpg_np, ISCSI_INFINIBAND);
58bd0c69
AG		 185 if (IS_ERR(tpg_np_iser)) {
186 rc = PTR_ERR(tpg_np_iser);
72438cdd 187 goto out;
58bd0c69 188 }
72438cdd
NB		 189 } else {
190 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
58bd0c69
AG		 191 if (tpg_np_iser) {
192 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
193 if (rc < 0)
194 goto out;
195 }
72438cdd
NB		 196 }
197
72438cdd
NB		 198 iscsit_put_tpg(tpg);
199 return count;
200out:
201 iscsit_put_tpg(tpg);
58bd0c69 202 return rc;
72438cdd
NB		 203}
204
205TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
206
e48354ce
NB		 207static struct configfs_attribute *lio_target_portal_attrs[] = {
208 &lio_target_np_sctp.attr,
72438cdd 209 &lio_target_np_iser.attr,
e48354ce
NB		 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
fceb5bc7 219static struct se_tpg_np *lio_target_call_addnptotpg(
e48354ce
NB		 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);
7bbb654e 240 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
e48354ce
NB		 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 = strict_strtoul(port_str, 0, &port);
267 if (ret < 0) {
268 pr_err("strict_strtoul() 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 = strict_strtoul(port_str, 0, &port);
292 if (ret < 0) {
293 pr_err("strict_strtoul() 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 *
20879696 319 * can be enabled with attributes under
e48354ce
NB		 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);
e1750ba2 327 return ERR_CAST(tpg_np);
e48354ce
NB		 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
335static 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");
359out:
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) \
368static 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", ISCSI_NODE_ATTRIB(nacl)->name); \
376} \
377 \
378static 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 char *endptr; \
386 u32 val; \
387 int ret; \
388 \
389 val = simple_strtoul(page, &endptr, 0); \
390 ret = iscsit_na_##name(nacl, val); \
391 if (ret < 0) \
392 return ret; \
393 \
394 return count; \
395}
396
397#define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
398/*
399 * Define iscsi_node_attrib_s_dataout_timeout
400 */
401DEF_NACL_ATTRIB(dataout_timeout);
402NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
403/*
404 * Define iscsi_node_attrib_s_dataout_timeout_retries
405 */
406DEF_NACL_ATTRIB(dataout_timeout_retries);
407NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
408/*
409 * Define iscsi_node_attrib_s_default_erl
410 */
411DEF_NACL_ATTRIB(default_erl);
412NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
413/*
414 * Define iscsi_node_attrib_s_nopin_timeout
415 */
416DEF_NACL_ATTRIB(nopin_timeout);
417NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
418/*
419 * Define iscsi_node_attrib_s_nopin_response_timeout
420 */
421DEF_NACL_ATTRIB(nopin_response_timeout);
422NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
423/*
424 * Define iscsi_node_attrib_s_random_datain_pdu_offsets
425 */
426DEF_NACL_ATTRIB(random_datain_pdu_offsets);
427NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
428/*
429 * Define iscsi_node_attrib_s_random_datain_seq_offsets
430 */
431DEF_NACL_ATTRIB(random_datain_seq_offsets);
432NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
433/*
434 * Define iscsi_node_attrib_s_random_r2t_offsets
435 */
436DEF_NACL_ATTRIB(random_r2t_offsets);
437NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
438
439static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
440 &iscsi_nacl_attrib_dataout_timeout.attr,
441 &iscsi_nacl_attrib_dataout_timeout_retries.attr,
442 &iscsi_nacl_attrib_default_erl.attr,
443 &iscsi_nacl_attrib_nopin_timeout.attr,
444 &iscsi_nacl_attrib_nopin_response_timeout.attr,
445 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
446 &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
447 &iscsi_nacl_attrib_random_r2t_offsets.attr,
448 NULL,
449};
450
451/* End items for lio_target_nacl_attrib_cit */
452
453/* Start items for lio_target_nacl_auth_cit */
454
455#define __DEF_NACL_AUTH_STR(prefix, name, flags) \
456static ssize_t __iscsi_##prefix##_show_##name( \
457 struct iscsi_node_acl *nacl, \
458 char *page) \
459{ \
460 struct iscsi_node_auth *auth = &nacl->node_auth; \
461 \
462 if (!capable(CAP_SYS_ADMIN)) \
463 return -EPERM; \
464 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
465} \
466 \
467static ssize_t __iscsi_##prefix##_store_##name( \
468 struct iscsi_node_acl *nacl, \
469 const char *page, \
470 size_t count) \
471{ \
472 struct iscsi_node_auth *auth = &nacl->node_auth; \
473 \
474 if (!capable(CAP_SYS_ADMIN)) \
475 return -EPERM; \
476 \
a5d56a22 477 snprintf(auth->name, sizeof(auth->name), "%s", page); \
e48354ce
NB		 478 if (!strncmp("NULL", auth->name, 4)) \
479 auth->naf_flags &= ~flags; \
480 else \
481 auth->naf_flags |= flags; \
482 \
483 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
484 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
485 auth->authenticate_target = 1; \
486 else \
487 auth->authenticate_target = 0; \
488 \
489 return count; \
490}
491
492#define __DEF_NACL_AUTH_INT(prefix, name) \
493static ssize_t __iscsi_##prefix##_show_##name( \
494 struct iscsi_node_acl *nacl, \
495 char *page) \
496{ \
497 struct iscsi_node_auth *auth = &nacl->node_auth; \
498 \
499 if (!capable(CAP_SYS_ADMIN)) \
500 return -EPERM; \
501 \
502 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
503}
504
505#define DEF_NACL_AUTH_STR(name, flags) \
506 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
507static ssize_t iscsi_nacl_auth_show_##name( \
508 struct se_node_acl *nacl, \
509 char *page) \
510{ \
511 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
512 struct iscsi_node_acl, se_node_acl), page); \
513} \
514static ssize_t iscsi_nacl_auth_store_##name( \
515 struct se_node_acl *nacl, \
516 const char *page, \
517 size_t count) \
518{ \
519 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
520 struct iscsi_node_acl, se_node_acl), page, count); \
521}
522
523#define DEF_NACL_AUTH_INT(name) \
524 __DEF_NACL_AUTH_INT(nacl_auth, name) \
525static ssize_t iscsi_nacl_auth_show_##name( \
526 struct se_node_acl *nacl, \
527 char *page) \
528{ \
529 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
530 struct iscsi_node_acl, se_node_acl), page); \
531}
532
533#define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
534#define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
535
536/*
537 * One-way authentication userid
538 */
539DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
540AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
541/*
542 * One-way authentication password
543 */
544DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
545AUTH_ATTR(password, S_IRUGO | S_IWUSR);
546/*
547 * Enforce mutual authentication
548 */
549DEF_NACL_AUTH_INT(authenticate_target);
550AUTH_ATTR_RO(authenticate_target);
551/*
552 * Mutual authentication userid
553 */
554DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
555AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
556/*
557 * Mutual authentication password
558 */
559DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
560AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
561
562static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
563 &iscsi_nacl_auth_userid.attr,
564 &iscsi_nacl_auth_password.attr,
565 &iscsi_nacl_auth_authenticate_target.attr,
566 &iscsi_nacl_auth_userid_mutual.attr,
567 &iscsi_nacl_auth_password_mutual.attr,
568 NULL,
569};
570
571/* End items for lio_target_nacl_auth_cit */
572
573/* Start items for lio_target_nacl_param_cit */
574
575#define DEF_NACL_PARAM(name) \
576static ssize_t iscsi_nacl_param_show_##name( \
577 struct se_node_acl *se_nacl, \
578 char *page) \
579{ \
580 struct iscsi_session *sess; \
581 struct se_session *se_sess; \
582 ssize_t rb; \
583 \
584 spin_lock_bh(&se_nacl->nacl_sess_lock); \
585 se_sess = se_nacl->nacl_sess; \
586 if (!se_sess) { \
587 rb = snprintf(page, PAGE_SIZE, \
588 "No Active iSCSI Session\n"); \
589 } else { \
590 sess = se_sess->fabric_sess_ptr; \
591 rb = snprintf(page, PAGE_SIZE, "%u\n", \
592 (u32)sess->sess_ops->name); \
593 } \
594 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
595 \
596 return rb; \
597}
598
599#define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
600
601DEF_NACL_PARAM(MaxConnections);
602NACL_PARAM_ATTR(MaxConnections);
603
604DEF_NACL_PARAM(InitialR2T);
605NACL_PARAM_ATTR(InitialR2T);
606
607DEF_NACL_PARAM(ImmediateData);
608NACL_PARAM_ATTR(ImmediateData);
609
610DEF_NACL_PARAM(MaxBurstLength);
611NACL_PARAM_ATTR(MaxBurstLength);
612
613DEF_NACL_PARAM(FirstBurstLength);
614NACL_PARAM_ATTR(FirstBurstLength);
615
616DEF_NACL_PARAM(DefaultTime2Wait);
617NACL_PARAM_ATTR(DefaultTime2Wait);
618
619DEF_NACL_PARAM(DefaultTime2Retain);
620NACL_PARAM_ATTR(DefaultTime2Retain);
621
622DEF_NACL_PARAM(MaxOutstandingR2T);
623NACL_PARAM_ATTR(MaxOutstandingR2T);
624
625DEF_NACL_PARAM(DataPDUInOrder);
626NACL_PARAM_ATTR(DataPDUInOrder);
627
628DEF_NACL_PARAM(DataSequenceInOrder);
629NACL_PARAM_ATTR(DataSequenceInOrder);
630
631DEF_NACL_PARAM(ErrorRecoveryLevel);
632NACL_PARAM_ATTR(ErrorRecoveryLevel);
633
634static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
635 &iscsi_nacl_param_MaxConnections.attr,
636 &iscsi_nacl_param_InitialR2T.attr,
637 &iscsi_nacl_param_ImmediateData.attr,
638 &iscsi_nacl_param_MaxBurstLength.attr,
639 &iscsi_nacl_param_FirstBurstLength.attr,
640 &iscsi_nacl_param_DefaultTime2Wait.attr,
641 &iscsi_nacl_param_DefaultTime2Retain.attr,
642 &iscsi_nacl_param_MaxOutstandingR2T.attr,
643 &iscsi_nacl_param_DataPDUInOrder.attr,
644 &iscsi_nacl_param_DataSequenceInOrder.attr,
645 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
646 NULL,
647};
648
649/* End items for lio_target_nacl_param_cit */
650
651/* Start items for lio_target_acl_cit */
652
653static ssize_t lio_target_nacl_show_info(
654 struct se_node_acl *se_nacl,
655 char *page)
656{
657 struct iscsi_session *sess;
658 struct iscsi_conn *conn;
659 struct se_session *se_sess;
660 ssize_t rb = 0;
661
662 spin_lock_bh(&se_nacl->nacl_sess_lock);
663 se_sess = se_nacl->nacl_sess;
664 if (!se_sess) {
665 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
666 " Endpoint: %s\n", se_nacl->initiatorname);
667 } else {
668 sess = se_sess->fabric_sess_ptr;
669
670 if (sess->sess_ops->InitiatorName)
671 rb += sprintf(page+rb, "InitiatorName: %s\n",
672 sess->sess_ops->InitiatorName);
673 if (sess->sess_ops->InitiatorAlias)
674 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
675 sess->sess_ops->InitiatorAlias);
676
677 rb += sprintf(page+rb, "LIO Session ID: %u "
678 "ISID: 0x%02x %02x %02x %02x %02x %02x "
679 "TSIH: %hu ", sess->sid,
680 sess->isid[0], sess->isid[1], sess->isid[2],
681 sess->isid[3], sess->isid[4], sess->isid[5],
682 sess->tsih);
683 rb += sprintf(page+rb, "SessionType: %s\n",
684 (sess->sess_ops->SessionType) ?
685 "Discovery" : "Normal");
686 rb += sprintf(page+rb, "Session State: ");
687 switch (sess->session_state) {
688 case TARG_SESS_STATE_FREE:
689 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
690 break;
691 case TARG_SESS_STATE_ACTIVE:
692 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
693 break;
694 case TARG_SESS_STATE_LOGGED_IN:
695 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
696 break;
697 case TARG_SESS_STATE_FAILED:
698 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
699 break;
700 case TARG_SESS_STATE_IN_CONTINUE:
701 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
702 break;
703 default:
704 rb += sprintf(page+rb, "ERROR: Unknown Session"
705 " State!\n");
706 break;
707 }
708
709 rb += sprintf(page+rb, "---------------------[iSCSI Session"
710 " Values]-----------------------\n");
711 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
712 " : MaxCmdSN : ITT : TTT\n");
713 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
714 " 0x%08x 0x%08x\n",
715 sess->cmdsn_window,
716 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
717 sess->exp_cmd_sn, sess->max_cmd_sn,
718 sess->init_task_tag, sess->targ_xfer_tag);
719 rb += sprintf(page+rb, "----------------------[iSCSI"
720 " Connections]-------------------------\n");
721
722 spin_lock(&sess->conn_lock);
723 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
724 rb += sprintf(page+rb, "CID: %hu Connection"
725 " State: ", conn->cid);
726 switch (conn->conn_state) {
727 case TARG_CONN_STATE_FREE:
728 rb += sprintf(page+rb,
729 "TARG_CONN_STATE_FREE\n");
730 break;
731 case TARG_CONN_STATE_XPT_UP:
732 rb += sprintf(page+rb,
733 "TARG_CONN_STATE_XPT_UP\n");
734 break;
735 case TARG_CONN_STATE_IN_LOGIN:
736 rb += sprintf(page+rb,
737 "TARG_CONN_STATE_IN_LOGIN\n");
738 break;
739 case TARG_CONN_STATE_LOGGED_IN:
740 rb += sprintf(page+rb,
741 "TARG_CONN_STATE_LOGGED_IN\n");
742 break;
743 case TARG_CONN_STATE_IN_LOGOUT:
744 rb += sprintf(page+rb,
745 "TARG_CONN_STATE_IN_LOGOUT\n");
746 break;
747 case TARG_CONN_STATE_LOGOUT_REQUESTED:
748 rb += sprintf(page+rb,
749 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
750 break;
751 case TARG_CONN_STATE_CLEANUP_WAIT:
752 rb += sprintf(page+rb,
753 "TARG_CONN_STATE_CLEANUP_WAIT\n");
754 break;
755 default:
756 rb += sprintf(page+rb,
757 "ERROR: Unknown Connection State!\n");
758 break;
759 }
760
761 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
762 (conn->network_transport == ISCSI_TCP) ?
763 "TCP" : "SCTP");
764 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
765 conn->stat_sn);
766 }
767 spin_unlock(&sess->conn_lock);
768 }
769 spin_unlock_bh(&se_nacl->nacl_sess_lock);
770
771 return rb;
772}
773
774TF_NACL_BASE_ATTR_RO(lio_target, info);
775
776static ssize_t lio_target_nacl_show_cmdsn_depth(
777 struct se_node_acl *se_nacl,
778 char *page)
779{
780 return sprintf(page, "%u\n", se_nacl->queue_depth);
781}
782
783static ssize_t lio_target_nacl_store_cmdsn_depth(
784 struct se_node_acl *se_nacl,
785 const char *page,
786 size_t count)
787{
788 struct se_portal_group *se_tpg = se_nacl->se_tpg;
789 struct iscsi_portal_group *tpg = container_of(se_tpg,
790 struct iscsi_portal_group, tpg_se_tpg);
791 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
792 char *endptr;
793 u32 cmdsn_depth = 0;
794 int ret;
795
796 cmdsn_depth = simple_strtoul(page, &endptr, 0);
797 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
798 pr_err("Passed cmdsn_depth: %u exceeds"
799 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
800 TA_DEFAULT_CMDSN_DEPTH_MAX);
801 return -EINVAL;
802 }
803 acl_ci = &se_nacl->acl_group.cg_item;
804 if (!acl_ci) {
805 pr_err("Unable to locatel acl_ci\n");
806 return -EINVAL;
807 }
808 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
809 if (!tpg_ci) {
810 pr_err("Unable to locate tpg_ci\n");
811 return -EINVAL;
812 }
813 wwn_ci = &tpg_ci->ci_group->cg_item;
814 if (!wwn_ci) {
815 pr_err("Unable to locate config_item wwn_ci\n");
816 return -EINVAL;
817 }
818
819 if (iscsit_get_tpg(tpg) < 0)
820 return -EINVAL;
821 /*
822 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
823 */
824 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
825 config_item_name(acl_ci), cmdsn_depth, 1);
826
827 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
828 "InitiatorName: %s\n", config_item_name(wwn_ci),
829 config_item_name(tpg_ci), cmdsn_depth,
830 config_item_name(acl_ci));
831
832 iscsit_put_tpg(tpg);
833 return (!ret) ? count : (ssize_t)ret;
834}
835
836TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
837
79e62fc3
AG		 838static ssize_t lio_target_nacl_show_tag(
839 struct se_node_acl *se_nacl,
840 char *page)
841{
842 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
843}
844
845static ssize_t lio_target_nacl_store_tag(
846 struct se_node_acl *se_nacl,
847 const char *page,
848 size_t count)
849{
850 int ret;
851
852 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
853
854 if (ret < 0)
855 return ret;
856 return count;
857}
858
859TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
860
e48354ce
NB		 861static struct configfs_attribute *lio_target_initiator_attrs[] = {
862 &lio_target_nacl_info.attr,
863 &lio_target_nacl_cmdsn_depth.attr,
79e62fc3 864 &lio_target_nacl_tag.attr,
e48354ce
NB		 865 NULL,
866};
867
868static struct se_node_acl *lio_tpg_alloc_fabric_acl(
869 struct se_portal_group *se_tpg)
870{
871 struct iscsi_node_acl *acl;
872
873 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
874 if (!acl) {
875 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
876 return NULL;
877 }
878
879 return &acl->se_node_acl;
880}
881
882static struct se_node_acl *lio_target_make_nodeacl(
883 struct se_portal_group *se_tpg,
884 struct config_group *group,
885 const char *name)
886{
887 struct config_group *stats_cg;
888 struct iscsi_node_acl *acl;
889 struct se_node_acl *se_nacl_new, *se_nacl;
890 struct iscsi_portal_group *tpg = container_of(se_tpg,
891 struct iscsi_portal_group, tpg_se_tpg);
892 u32 cmdsn_depth;
893
894 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
895 if (!se_nacl_new)
896 return ERR_PTR(-ENOMEM);
897
e48354ce
NB		 898 cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
899 /*
900 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
901 * when converting a NdoeACL from demo mode -> explict
902 */
903 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
904 name, cmdsn_depth);
905 if (IS_ERR(se_nacl))
906 return se_nacl;
907
d0628334
NB		 908 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
909 stats_cg = &se_nacl->acl_fabric_stat_group;
e48354ce 910
13f6a914 911 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
e48354ce
NB		 912 GFP_KERNEL);
913 if (!stats_cg->default_groups) {
914 pr_err("Unable to allocate memory for"
915 " stats_cg->default_groups\n");
916 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
917 kfree(acl);
918 return ERR_PTR(-ENOMEM);
919 }
920
921 stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
922 stats_cg->default_groups[1] = NULL;
923 config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
924 "iscsi_sess_stats", &iscsi_stat_sess_cit);
925
926 return se_nacl;
927}
928
929static void lio_target_drop_nodeacl(
930 struct se_node_acl *se_nacl)
931{
932 struct se_portal_group *se_tpg = se_nacl->se_tpg;
933 struct iscsi_node_acl *acl = container_of(se_nacl,
934 struct iscsi_node_acl, se_node_acl);
935 struct config_item *df_item;
936 struct config_group *stats_cg;
937 int i;
938
939 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
940 for (i = 0; stats_cg->default_groups[i]; i++) {
941 df_item = &stats_cg->default_groups[i]->cg_item;
942 stats_cg->default_groups[i] = NULL;
943 config_item_put(df_item);
944 }
945 kfree(stats_cg->default_groups);
946
947 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
948 kfree(acl);
949}
950
951/* End items for lio_target_acl_cit */
952
953/* Start items for lio_target_tpg_attrib_cit */
954
955#define DEF_TPG_ATTRIB(name) \
956 \
957static ssize_t iscsi_tpg_attrib_show_##name( \
958 struct se_portal_group *se_tpg, \
959 char *page) \
960{ \
961 struct iscsi_portal_group *tpg = container_of(se_tpg, \
962 struct iscsi_portal_group, tpg_se_tpg); \
963 ssize_t rb; \
964 \
965 if (iscsit_get_tpg(tpg) < 0) \
966 return -EINVAL; \
967 \
968 rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name); \
969 iscsit_put_tpg(tpg); \
970 return rb; \
971} \
972 \
973static ssize_t iscsi_tpg_attrib_store_##name( \
974 struct se_portal_group *se_tpg, \
975 const char *page, \
976 size_t count) \
977{ \
978 struct iscsi_portal_group *tpg = container_of(se_tpg, \
979 struct iscsi_portal_group, tpg_se_tpg); \
980 char *endptr; \
981 u32 val; \
982 int ret; \
983 \
984 if (iscsit_get_tpg(tpg) < 0) \
985 return -EINVAL; \
986 \
987 val = simple_strtoul(page, &endptr, 0); \
988 ret = iscsit_ta_##name(tpg, val); \
989 if (ret < 0) \
990 goto out; \
991 \
992 iscsit_put_tpg(tpg); \
993 return count; \
994out: \
995 iscsit_put_tpg(tpg); \
996 return ret; \
997}
998
999#define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1000
1001/*
1002 * Define iscsi_tpg_attrib_s_authentication
1003 */
1004DEF_TPG_ATTRIB(authentication);
1005TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1006/*
1007 * Define iscsi_tpg_attrib_s_login_timeout
1008 */
1009DEF_TPG_ATTRIB(login_timeout);
1010TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1011/*
1012 * Define iscsi_tpg_attrib_s_netif_timeout
1013 */
1014DEF_TPG_ATTRIB(netif_timeout);
1015TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1016/*
1017 * Define iscsi_tpg_attrib_s_generate_node_acls
1018 */
1019DEF_TPG_ATTRIB(generate_node_acls);
1020TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1021/*
1022 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1023 */
1024DEF_TPG_ATTRIB(default_cmdsn_depth);
1025TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1026/*
1027 Define iscsi_tpg_attrib_s_cache_dynamic_acls
1028 */
1029DEF_TPG_ATTRIB(cache_dynamic_acls);
1030TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1031/*
1032 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1033 */
1034DEF_TPG_ATTRIB(demo_mode_write_protect);
1035TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1036/*
1037 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1038 */
1039DEF_TPG_ATTRIB(prod_mode_write_protect);
1040TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1041
1042static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1043 &iscsi_tpg_attrib_authentication.attr,
1044 &iscsi_tpg_attrib_login_timeout.attr,
1045 &iscsi_tpg_attrib_netif_timeout.attr,
1046 &iscsi_tpg_attrib_generate_node_acls.attr,
1047 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1048 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1049 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1050 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1051 NULL,
1052};
1053
1054/* End items for lio_target_tpg_attrib_cit */
1055
1056/* Start items for lio_target_tpg_param_cit */
1057
1058#define DEF_TPG_PARAM(name) \
1059static ssize_t iscsi_tpg_param_show_##name( \
1060 struct se_portal_group *se_tpg, \
1061 char *page) \
1062{ \
1063 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1064 struct iscsi_portal_group, tpg_se_tpg); \
1065 struct iscsi_param *param; \
1066 ssize_t rb; \
1067 \
1068 if (iscsit_get_tpg(tpg) < 0) \
1069 return -EINVAL; \
1070 \
1071 param = iscsi_find_param_from_key(__stringify(name), \
1072 tpg->param_list); \
1073 if (!param) { \
1074 iscsit_put_tpg(tpg); \
1075 return -EINVAL; \
1076 } \
1077 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1078 \
1079 iscsit_put_tpg(tpg); \
1080 return rb; \
1081} \
1082static ssize_t iscsi_tpg_param_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 char *buf; \
1090 int ret; \
1091 \
1092 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1093 if (!buf) \
1094 return -ENOMEM; \
1095 snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1096 buf[strlen(buf)-1] = '\0'; /* Kill newline */ \
1097 \
1098 if (iscsit_get_tpg(tpg) < 0) { \
1099 kfree(buf); \
1100 return -EINVAL; \
1101 } \
1102 \
1103 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1104 if (ret < 0) \
1105 goto out; \
1106 \
1107 kfree(buf); \
1108 iscsit_put_tpg(tpg); \
1109 return count; \
1110out: \
1111 kfree(buf); \
1112 iscsit_put_tpg(tpg); \
1113 return -EINVAL; \
1114}
1115
1116#define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1117
1118DEF_TPG_PARAM(AuthMethod);
1119TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1120
1121DEF_TPG_PARAM(HeaderDigest);
1122TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1123
1124DEF_TPG_PARAM(DataDigest);
1125TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1126
1127DEF_TPG_PARAM(MaxConnections);
1128TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1129
1130DEF_TPG_PARAM(TargetAlias);
1131TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1132
1133DEF_TPG_PARAM(InitialR2T);
1134TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1135
1136DEF_TPG_PARAM(ImmediateData);
1137TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1138
1139DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1140TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1141
e004cb25
NB		 1142DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1143TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1144
e48354ce
NB		 1145DEF_TPG_PARAM(MaxBurstLength);
1146TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1147
1148DEF_TPG_PARAM(FirstBurstLength);
1149TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1150
1151DEF_TPG_PARAM(DefaultTime2Wait);
1152TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1153
1154DEF_TPG_PARAM(DefaultTime2Retain);
1155TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1156
1157DEF_TPG_PARAM(MaxOutstandingR2T);
1158TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1159
1160DEF_TPG_PARAM(DataPDUInOrder);
1161TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1162
1163DEF_TPG_PARAM(DataSequenceInOrder);
1164TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1165
1166DEF_TPG_PARAM(ErrorRecoveryLevel);
1167TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1168
1169DEF_TPG_PARAM(IFMarker);
1170TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1171
1172DEF_TPG_PARAM(OFMarker);
1173TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1174
1175DEF_TPG_PARAM(IFMarkInt);
1176TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1177
1178DEF_TPG_PARAM(OFMarkInt);
1179TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1180
1181static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1182 &iscsi_tpg_param_AuthMethod.attr,
1183 &iscsi_tpg_param_HeaderDigest.attr,
1184 &iscsi_tpg_param_DataDigest.attr,
1185 &iscsi_tpg_param_MaxConnections.attr,
1186 &iscsi_tpg_param_TargetAlias.attr,
1187 &iscsi_tpg_param_InitialR2T.attr,
1188 &iscsi_tpg_param_ImmediateData.attr,
1189 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
e004cb25 1190 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
e48354ce
NB		 1191 &iscsi_tpg_param_MaxBurstLength.attr,
1192 &iscsi_tpg_param_FirstBurstLength.attr,
1193 &iscsi_tpg_param_DefaultTime2Wait.attr,
1194 &iscsi_tpg_param_DefaultTime2Retain.attr,
1195 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1196 &iscsi_tpg_param_DataPDUInOrder.attr,
1197 &iscsi_tpg_param_DataSequenceInOrder.attr,
1198 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1199 &iscsi_tpg_param_IFMarker.attr,
1200 &iscsi_tpg_param_OFMarker.attr,
1201 &iscsi_tpg_param_IFMarkInt.attr,
1202 &iscsi_tpg_param_OFMarkInt.attr,
1203 NULL,
1204};
1205
1206/* End items for lio_target_tpg_param_cit */
1207
1208/* Start items for lio_target_tpg_cit */
1209
1210static ssize_t lio_target_tpg_show_enable(
1211 struct se_portal_group *se_tpg,
1212 char *page)
1213{
1214 struct iscsi_portal_group *tpg = container_of(se_tpg,
1215 struct iscsi_portal_group, tpg_se_tpg);
1216 ssize_t len;
1217
1218 spin_lock(&tpg->tpg_state_lock);
1219 len = sprintf(page, "%d\n",
1220 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1221 spin_unlock(&tpg->tpg_state_lock);
1222
1223 return len;
1224}
1225
1226static ssize_t lio_target_tpg_store_enable(
1227 struct se_portal_group *se_tpg,
1228 const char *page,
1229 size_t count)
1230{
1231 struct iscsi_portal_group *tpg = container_of(se_tpg,
1232 struct iscsi_portal_group, tpg_se_tpg);
1233 char *endptr;
1234 u32 op;
1235 int ret = 0;
1236
1237 op = simple_strtoul(page, &endptr, 0);
1238 if ((op != 1) && (op != 0)) {
1239 pr_err("Illegal value for tpg_enable: %u\n", op);
1240 return -EINVAL;
1241 }
1242
1243 ret = iscsit_get_tpg(tpg);
1244 if (ret < 0)
1245 return -EINVAL;
1246
1247 if (op) {
1248 ret = iscsit_tpg_enable_portal_group(tpg);
1249 if (ret < 0)
1250 goto out;
1251 } else {
1252 /*
1253 * iscsit_tpg_disable_portal_group() assumes force=1
1254 */
1255 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1256 if (ret < 0)
1257 goto out;
1258 }
1259
1260 iscsit_put_tpg(tpg);
1261 return count;
1262out:
1263 iscsit_put_tpg(tpg);
1264 return -EINVAL;
1265}
1266
1267TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1268
1269static struct configfs_attribute *lio_target_tpg_attrs[] = {
1270 &lio_target_tpg_enable.attr,
1271 NULL,
1272};
1273
1274/* End items for lio_target_tpg_cit */
1275
1276/* Start items for lio_target_tiqn_cit */
1277
fceb5bc7 1278static struct se_portal_group *lio_target_tiqn_addtpg(
e48354ce
NB		 1279 struct se_wwn *wwn,
1280 struct config_group *group,
1281 const char *name)
1282{
1283 struct iscsi_portal_group *tpg;
1284 struct iscsi_tiqn *tiqn;
1285 char *tpgt_str, *end_ptr;
1286 int ret = 0;
1287 unsigned short int tpgt;
1288
1289 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1290 /*
1291 * Only tpgt_# directory groups can be created below
1292 * target/iscsi/iqn.superturodiskarry/
1293 */
1294 tpgt_str = strstr(name, "tpgt_");
1295 if (!tpgt_str) {
1296 pr_err("Unable to locate \"tpgt_#\" directory"
1297 " group\n");
1298 return NULL;
1299 }
1300 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1301 tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1302
1303 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1304 if (!tpg)
1305 return NULL;
1306
1307 ret = core_tpg_register(
1308 &lio_target_fabric_configfs->tf_ops,
8359cf43 1309 wwn, &tpg->tpg_se_tpg, tpg,
e48354ce
NB		 1310 TRANSPORT_TPG_TYPE_NORMAL);
1311 if (ret < 0)
1312 return NULL;
1313
1314 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1315 if (ret != 0)
1316 goto out;
1317
1318 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1319 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1320 name);
1321 return &tpg->tpg_se_tpg;
1322out:
1323 core_tpg_deregister(&tpg->tpg_se_tpg);
1324 kfree(tpg);
1325 return NULL;
1326}
1327
fceb5bc7 1328static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
e48354ce
NB		 1329{
1330 struct iscsi_portal_group *tpg;
1331 struct iscsi_tiqn *tiqn;
1332
1333 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1334 tiqn = tpg->tpg_tiqn;
1335 /*
1336 * iscsit_tpg_del_portal_group() assumes force=1
1337 */
1338 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1339 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1340}
1341
1342/* End items for lio_target_tiqn_cit */
1343
1344/* Start LIO-Target TIQN struct contig_item lio_target_cit */
1345
1346static ssize_t lio_target_wwn_show_attr_lio_version(
1347 struct target_fabric_configfs *tf,
1348 char *page)
1349{
1350 return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1351}
1352
1353TF_WWN_ATTR_RO(lio_target, lio_version);
1354
1355static struct configfs_attribute *lio_target_wwn_attrs[] = {
1356 &lio_target_wwn_lio_version.attr,
1357 NULL,
1358};
1359
fceb5bc7 1360static struct se_wwn *lio_target_call_coreaddtiqn(
e48354ce
NB		 1361 struct target_fabric_configfs *tf,
1362 struct config_group *group,
1363 const char *name)
1364{
1365 struct config_group *stats_cg;
1366 struct iscsi_tiqn *tiqn;
1367
1368 tiqn = iscsit_add_tiqn((unsigned char *)name);
1369 if (IS_ERR(tiqn))
e1750ba2 1370 return ERR_CAST(tiqn);
e48354ce
NB		 1371 /*
1372 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1373 */
1374 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1375
13f6a914 1376 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
e48354ce
NB		 1377 GFP_KERNEL);
1378 if (!stats_cg->default_groups) {
1379 pr_err("Unable to allocate memory for"
1380 " stats_cg->default_groups\n");
1381 iscsit_del_tiqn(tiqn);
1382 return ERR_PTR(-ENOMEM);
1383 }
1384
1385 stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1386 stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1387 stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1388 stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1389 stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1390 stats_cg->default_groups[5] = NULL;
1391 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1392 "iscsi_instance", &iscsi_stat_instance_cit);
1393 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1394 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1395 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1396 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1397 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1398 "iscsi_login_stats", &iscsi_stat_login_cit);
1399 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1400 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1401
1402 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1403 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1404 " %s\n", name);
1405 return &tiqn->tiqn_wwn;
1406}
1407
fceb5bc7 1408static void lio_target_call_coredeltiqn(
e48354ce
NB		 1409 struct se_wwn *wwn)
1410{
1411 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1412 struct config_item *df_item;
1413 struct config_group *stats_cg;
1414 int i;
1415
1416 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1417 for (i = 0; stats_cg->default_groups[i]; i++) {
1418 df_item = &stats_cg->default_groups[i]->cg_item;
1419 stats_cg->default_groups[i] = NULL;
1420 config_item_put(df_item);
1421 }
1422 kfree(stats_cg->default_groups);
1423
1424 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1425 tiqn->tiqn);
1426 iscsit_del_tiqn(tiqn);
1427}
1428
1429/* End LIO-Target TIQN struct contig_lio_target_cit */
1430
1431/* Start lio_target_discovery_auth_cit */
1432
1433#define DEF_DISC_AUTH_STR(name, flags) \
1434 __DEF_NACL_AUTH_STR(disc, name, flags) \
1435static ssize_t iscsi_disc_show_##name( \
1436 struct target_fabric_configfs *tf, \
1437 char *page) \
1438{ \
1439 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1440 page); \
1441} \
1442static ssize_t iscsi_disc_store_##name( \
1443 struct target_fabric_configfs *tf, \
1444 const char *page, \
1445 size_t count) \
1446{ \
1447 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1448 page, count); \
1449}
1450
1451#define DEF_DISC_AUTH_INT(name) \
1452 __DEF_NACL_AUTH_INT(disc, name) \
1453static ssize_t iscsi_disc_show_##name( \
1454 struct target_fabric_configfs *tf, \
1455 char *page) \
1456{ \
1457 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1458 page); \
1459}
1460
1461#define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1462#define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1463
1464/*
1465 * One-way authentication userid
1466 */
1467DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1468DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1469/*
1470 * One-way authentication password
1471 */
1472DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1473DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1474/*
1475 * Enforce mutual authentication
1476 */
1477DEF_DISC_AUTH_INT(authenticate_target);
1478DISC_AUTH_ATTR_RO(authenticate_target);
1479/*
1480 * Mutual authentication userid
1481 */
1482DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1483DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1484/*
1485 * Mutual authentication password
1486 */
1487DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1488DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1489
1490/*
1491 * enforce_discovery_auth
1492 */
1493static ssize_t iscsi_disc_show_enforce_discovery_auth(
1494 struct target_fabric_configfs *tf,
1495 char *page)
1496{
1497 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1498
1499 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1500}
1501
1502static ssize_t iscsi_disc_store_enforce_discovery_auth(
1503 struct target_fabric_configfs *tf,
1504 const char *page,
1505 size_t count)
1506{
1507 struct iscsi_param *param;
1508 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1509 char *endptr;
1510 u32 op;
1511
1512 op = simple_strtoul(page, &endptr, 0);
1513 if ((op != 1) && (op != 0)) {
1514 pr_err("Illegal value for enforce_discovery_auth:"
1515 " %u\n", op);
1516 return -EINVAL;
1517 }
1518
1519 if (!discovery_tpg) {
1520 pr_err("iscsit_global->discovery_tpg is NULL\n");
1521 return -EINVAL;
1522 }
1523
1524 param = iscsi_find_param_from_key(AUTHMETHOD,
1525 discovery_tpg->param_list);
1526 if (!param)
1527 return -EINVAL;
1528
1529 if (op) {
1530 /*
1531 * Reset the AuthMethod key to CHAP.
1532 */
1533 if (iscsi_update_param_value(param, CHAP) < 0)
1534 return -EINVAL;
1535
1536 discovery_tpg->tpg_attrib.authentication = 1;
1537 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1538 pr_debug("LIO-CORE[0] Successfully enabled"
1539 " authentication enforcement for iSCSI"
1540 " Discovery TPG\n");
1541 } else {
1542 /*
1543 * Reset the AuthMethod key to CHAP,None
1544 */
1545 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1546 return -EINVAL;
1547
1548 discovery_tpg->tpg_attrib.authentication = 0;
1549 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1550 pr_debug("LIO-CORE[0] Successfully disabled"
1551 " authentication enforcement for iSCSI"
1552 " Discovery TPG\n");
1553 }
1554
1555 return count;
1556}
1557
1558DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1559
1560static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1561 &iscsi_disc_userid.attr,
1562 &iscsi_disc_password.attr,
1563 &iscsi_disc_authenticate_target.attr,
1564 &iscsi_disc_userid_mutual.attr,
1565 &iscsi_disc_password_mutual.attr,
1566 &iscsi_disc_enforce_discovery_auth.attr,
1567 NULL,
1568};
1569
1570/* End lio_target_discovery_auth_cit */
1571
1572/* Start functions for target_core_fabric_ops */
1573
1574static char *iscsi_get_fabric_name(void)
1575{
1576 return "iSCSI";
1577}
1578
1579static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1580{
1581 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1582
66c7db68
CH		 1583 /* only used for printks or comparism with ->ref_task_tag */
1584 return (__force u32)cmd->init_task_tag;
e48354ce
NB		 1585}
1586
1587static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1588{
1589 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1590
1591 return cmd->i_state;
1592}
1593
e48354ce
NB		 1594static u32 lio_sess_get_index(struct se_session *se_sess)
1595{
1596 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1597
1598 return sess->session_index;
1599}
1600
1601static u32 lio_sess_get_initiator_sid(
1602 struct se_session *se_sess,
1603 unsigned char *buf,
1604 u32 size)
1605{
1606 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1607 /*
1608 * iSCSI Initiator Session Identifier from RFC-3720.
1609 */
1610 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1611 sess->isid[0], sess->isid[1], sess->isid[2],
1612 sess->isid[3], sess->isid[4], sess->isid[5]);
1613}
1614
1615static int lio_queue_data_in(struct se_cmd *se_cmd)
1616{
1617 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1618
1619 cmd->i_state = ISTATE_SEND_DATAIN;
2ec5a8c1
NB		 1620 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1621
e48354ce
NB		 1622 return 0;
1623}
1624
1625static int lio_write_pending(struct se_cmd *se_cmd)
1626{
1627 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
3e1c81a9 1628 struct iscsi_conn *conn = cmd->conn;
e48354ce
NB		 1629
1630 if (!cmd->immediate_data && !cmd->unsolicited_data)
3e1c81a9 1631 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
e48354ce
NB		 1632
1633 return 0;
1634}
1635
1636static int lio_write_pending_status(struct se_cmd *se_cmd)
1637{
1638 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1639 int ret;
1640
1641 spin_lock_bh(&cmd->istate_lock);
1642 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1643 spin_unlock_bh(&cmd->istate_lock);
1644
1645 return ret;
1646}
1647
1648static int lio_queue_status(struct se_cmd *se_cmd)
1649{
1650 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1651
1652 cmd->i_state = ISTATE_SEND_STATUS;
cf516eff
NB		 1653
1654 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1655 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1656 return 0;
1657 }
2ec5a8c1
NB		 1658 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1659
e48354ce
NB		 1660 return 0;
1661}
1662
e48354ce
NB		 1663static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1664{
1665 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1666
1667 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1668 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1669 return 0;
1670}
1671
1672static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1673{
1674 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1675
1676 return &tpg->tpg_tiqn->tiqn[0];
1677}
1678
1679static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1680{
1681 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1682
1683 return tpg->tpgt;
1684}
1685
1686static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1687{
1688 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1689
1690 return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1691}
1692
1693static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1694{
1695 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1696
1697 return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1698}
1699
1700static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1701{
1702 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1703
1704 return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1705}
1706
1707static int lio_tpg_check_demo_mode_write_protect(
1708 struct se_portal_group *se_tpg)
1709{
1710 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1711
1712 return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1713}
1714
1715static int lio_tpg_check_prod_mode_write_protect(
1716 struct se_portal_group *se_tpg)
1717{
1718 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1719
1720 return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1721}
1722
1723static void lio_tpg_release_fabric_acl(
1724 struct se_portal_group *se_tpg,
1725 struct se_node_acl *se_acl)
1726{
1727 struct iscsi_node_acl *acl = container_of(se_acl,
1728 struct iscsi_node_acl, se_node_acl);
1729 kfree(acl);
1730}
1731
1732/*
bac26cab
NB		 1733 * Called with spin_lock_irq(struct se_portal_group->session_lock) held
1734 * or not held.
e48354ce
NB		 1735 *
1736 * Also, this function calls iscsit_inc_session_usage_count() on the
1737 * struct iscsi_session in question.
1738 */
1739static int lio_tpg_shutdown_session(struct se_session *se_sess)
1740{
1741 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
bac26cab
NB		 1742 struct se_portal_group *se_tpg = se_sess->se_tpg;
1743 bool local_lock = false;
1744
1745 if (!spin_is_locked(&se_tpg->session_lock)) {
1746 spin_lock_irq(&se_tpg->session_lock);
1747 local_lock = true;
1748 }
e48354ce
NB		 1749
1750 spin_lock(&sess->conn_lock);
1751 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1752 atomic_read(&sess->session_logout) ||
1753 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1754 spin_unlock(&sess->conn_lock);
bac26cab
NB		 1755 if (local_lock)
1756 spin_unlock_irq(&sess->conn_lock);
e48354ce
NB		 1757 return 0;
1758 }
1759 atomic_set(&sess->session_reinstatement, 1);
1760 spin_unlock(&sess->conn_lock);
1761
e48354ce 1762 iscsit_stop_time2retain_timer(sess);
bac26cab
NB		 1763 spin_unlock_irq(&se_tpg->session_lock);
1764
99367f01 1765 iscsit_stop_session(sess, 1, 1);
bac26cab
NB		 1766 if (!local_lock)
1767 spin_lock_irq(&se_tpg->session_lock);
e48354ce
NB		 1768
1769 return 1;
1770}
1771
1772/*
1773 * Calls iscsit_dec_session_usage_count() as inverse of
1774 * lio_tpg_shutdown_session()
1775 */
1776static void lio_tpg_close_session(struct se_session *se_sess)
1777{
1778 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1779 /*
1780 * If the iSCSI Session for the iSCSI Initiator Node exists,
1781 * forcefully shutdown the iSCSI NEXUS.
1782 */
e48354ce
NB		 1783 iscsit_close_session(sess);
1784}
1785
e48354ce
NB		 1786static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1787{
1788 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1789
1790 return tpg->tpg_tiqn->tiqn_index;
1791}
1792
1793static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1794{
1795 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1796 se_node_acl);
1797
1798 ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1799 iscsit_set_default_node_attribues(acl);
1800}
1801
3e1c81a9
NB		 1802static int lio_check_stop_free(struct se_cmd *se_cmd)
1803{
1804 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1805}
1806
e48354ce
NB		 1807static void lio_release_cmd(struct se_cmd *se_cmd)
1808{
1809 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1810
cdb72665
NB		 1811 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1812 cmd->release_cmd(cmd);
e48354ce
NB		 1813}
1814
1815/* End functions for target_core_fabric_ops */
1816
1817int iscsi_target_register_configfs(void)
1818{
1819 struct target_fabric_configfs *fabric;
1820 int ret;
1821
1822 lio_target_fabric_configfs = NULL;
1823 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1824 if (IS_ERR(fabric)) {
1825 pr_err("target_fabric_configfs_init() for"
1826 " LIO-Target failed!\n");
1827 return PTR_ERR(fabric);
1828 }
1829 /*
1830 * Setup the fabric API of function pointers used by target_core_mod..
1831 */
1832 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1833 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1834 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1835 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1836 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1837 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1838 fabric->tf_ops.tpg_get_pr_transport_id_len =
1839 &iscsi_get_pr_transport_id_len;
1840 fabric->tf_ops.tpg_parse_pr_out_transport_id =
1841 &iscsi_parse_pr_out_transport_id;
1842 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1843 fabric->tf_ops.tpg_check_demo_mode_cache =
1844 &lio_tpg_check_demo_mode_cache;
1845 fabric->tf_ops.tpg_check_demo_mode_write_protect =
1846 &lio_tpg_check_demo_mode_write_protect;
1847 fabric->tf_ops.tpg_check_prod_mode_write_protect =
1848 &lio_tpg_check_prod_mode_write_protect;
1849 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1850 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1851 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
3e1c81a9 1852 fabric->tf_ops.check_stop_free = &lio_check_stop_free,
e48354ce
NB		 1853 fabric->tf_ops.release_cmd = &lio_release_cmd;
1854 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1855 fabric->tf_ops.close_session = &lio_tpg_close_session;
e48354ce
NB		 1856 fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1857 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1858 fabric->tf_ops.write_pending = &lio_write_pending;
1859 fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1860 fabric->tf_ops.set_default_node_attributes =
1861 &lio_set_default_node_attributes;
1862 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1863 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1864 fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1865 fabric->tf_ops.queue_status = &lio_queue_status;
1866 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
e48354ce
NB		 1867 /*
1868 * Setup function pointers for generic logic in target_core_fabric_configfs.c
1869 */
1870 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1871 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1872 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1873 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1874 fabric->tf_ops.fabric_post_link = NULL;
1875 fabric->tf_ops.fabric_pre_unlink = NULL;
1876 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1877 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1878 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1879 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1880 /*
1881 * Setup default attribute lists for various fabric->tf_cit_tmpl
1882 * sturct config_item_type's
1883 */
1884 TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1885 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1886 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1887 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
1888 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1889 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1890 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1891 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1892 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1893 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
1894
1895 ret = target_fabric_configfs_register(fabric);
1896 if (ret < 0) {
1897 pr_err("target_fabric_configfs_register() for"
1898 " LIO-Target failed!\n");
1899 target_fabric_configfs_free(fabric);
1900 return ret;
1901 }
1902
1903 lio_target_fabric_configfs = fabric;
1904 pr_debug("LIO_TARGET[0] - Set fabric ->"
1905 " lio_target_fabric_configfs\n");
1906 return 0;
1907}
1908
1909
1910void iscsi_target_deregister_configfs(void)
1911{
1912 if (!lio_target_fabric_configfs)
1913 return;
1914 /*
1915 * Shutdown discovery sessions and disable discovery TPG
1916 */
1917 if (iscsit_global->discovery_tpg)
1918 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
1919
1920 target_fabric_configfs_deregister(lio_target_fabric_configfs);
1921 lio_target_fabric_configfs = NULL;
1922 pr_debug("LIO_TARGET[0] - Cleared"
1923 " lio_target_fabric_configfs\n");
1924}
kernel source for telekom puls (alcatel/mediatek)