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iscsi-target: Expose default_erl as TPG attribute
[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 *
4c76251e 5 * (c) Copyright 2007-2013 Datera, Inc.
e48354ce
NB		 6 *
7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 ****************************************************************************/
19
20#include <linux/configfs.h>
ad7babd2 21#include <linux/ctype.h>
c53181af 22#include <linux/export.h>
c3bc93da 23#include <linux/inet.h>
e48354ce 24#include <target/target_core_base.h>
c4795fb2 25#include <target/target_core_fabric.h>
e48354ce 26#include <target/target_core_fabric_configfs.h>
e48354ce
NB		 27#include <target/target_core_configfs.h>
28#include <target/configfs_macros.h>
2ec5a8c1 29#include <target/iscsi/iscsi_transport.h>
e48354ce
NB		 30
31#include "iscsi_target_core.h"
32#include "iscsi_target_parameters.h"
33#include "iscsi_target_device.h"
34#include "iscsi_target_erl0.h"
35#include "iscsi_target_nodeattrib.h"
36#include "iscsi_target_tpg.h"
37#include "iscsi_target_util.h"
38#include "iscsi_target.h"
39#include "iscsi_target_stat.h"
40#include "iscsi_target_configfs.h"
41
42struct target_fabric_configfs *lio_target_fabric_configfs;
43
44struct lio_target_configfs_attribute {
45 struct configfs_attribute attr;
46 ssize_t (*show)(void *, char *);
47 ssize_t (*store)(void *, const char *, size_t);
48};
49
e48354ce
NB		 50/* Start items for lio_target_portal_cit */
51
52static ssize_t lio_target_np_show_sctp(
53 struct se_tpg_np *se_tpg_np,
54 char *page)
55{
56 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
57 struct iscsi_tpg_np, se_tpg_np);
58 struct iscsi_tpg_np *tpg_np_sctp;
59 ssize_t rb;
60
61 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
62 if (tpg_np_sctp)
63 rb = sprintf(page, "1\n");
64 else
65 rb = sprintf(page, "0\n");
66
67 return rb;
68}
69
70static ssize_t lio_target_np_store_sctp(
71 struct se_tpg_np *se_tpg_np,
72 const char *page,
73 size_t count)
74{
75 struct iscsi_np *np;
76 struct iscsi_portal_group *tpg;
77 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
78 struct iscsi_tpg_np, se_tpg_np);
79 struct iscsi_tpg_np *tpg_np_sctp = NULL;
e48354ce
NB		 80 u32 op;
81 int ret;
82
ad7babd2
JE		 83 ret = kstrtou32(page, 0, &op);
84 if (ret)
85 return ret;
e48354ce
NB		 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
57103d7f 266 ret = kstrtoul(port_str, 0, &port);
e48354ce 267 if (ret < 0) {
57103d7f 268 pr_err("kstrtoul() failed for port_str: %d\n", ret);
e48354ce
NB		 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
57103d7f 291 ret = kstrtoul(port_str, 0, &port);
e48354ce 292 if (ret < 0) {
57103d7f 293 pr_err("kstrtoul() failed for port_str: %d\n", ret);
e48354ce
NB		 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 \
b7eec2cd 375 return sprintf(page, "%u\n", nacl->node_attrib.name); \
e48354ce
NB		 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); \
e48354ce
NB		 385 u32 val; \
386 int ret; \
387 \
ad7babd2
JE		 388 ret = kstrtou32(page, 0, &val); \
389 if (ret) \
390 return ret; \
e48354ce
NB		 391 ret = iscsit_na_##name(nacl, val); \
392 if (ret < 0) \
393 return ret; \
394 \
395 return count; \
396}
397
398#define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
399/*
400 * Define iscsi_node_attrib_s_dataout_timeout
401 */
402DEF_NACL_ATTRIB(dataout_timeout);
403NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
404/*
405 * Define iscsi_node_attrib_s_dataout_timeout_retries
406 */
407DEF_NACL_ATTRIB(dataout_timeout_retries);
408NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
409/*
410 * Define iscsi_node_attrib_s_default_erl
411 */
412DEF_NACL_ATTRIB(default_erl);
413NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
414/*
415 * Define iscsi_node_attrib_s_nopin_timeout
416 */
417DEF_NACL_ATTRIB(nopin_timeout);
418NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
419/*
420 * Define iscsi_node_attrib_s_nopin_response_timeout
421 */
422DEF_NACL_ATTRIB(nopin_response_timeout);
423NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
424/*
425 * Define iscsi_node_attrib_s_random_datain_pdu_offsets
426 */
427DEF_NACL_ATTRIB(random_datain_pdu_offsets);
428NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
429/*
430 * Define iscsi_node_attrib_s_random_datain_seq_offsets
431 */
432DEF_NACL_ATTRIB(random_datain_seq_offsets);
433NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
434/*
435 * Define iscsi_node_attrib_s_random_r2t_offsets
436 */
437DEF_NACL_ATTRIB(random_r2t_offsets);
438NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
439
440static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
441 &iscsi_nacl_attrib_dataout_timeout.attr,
442 &iscsi_nacl_attrib_dataout_timeout_retries.attr,
443 &iscsi_nacl_attrib_default_erl.attr,
444 &iscsi_nacl_attrib_nopin_timeout.attr,
445 &iscsi_nacl_attrib_nopin_response_timeout.attr,
446 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
447 &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
448 &iscsi_nacl_attrib_random_r2t_offsets.attr,
449 NULL,
450};
451
452/* End items for lio_target_nacl_attrib_cit */
453
454/* Start items for lio_target_nacl_auth_cit */
455
456#define __DEF_NACL_AUTH_STR(prefix, name, flags) \
457static ssize_t __iscsi_##prefix##_show_##name( \
458 struct iscsi_node_acl *nacl, \
459 char *page) \
460{ \
461 struct iscsi_node_auth *auth = &nacl->node_auth; \
462 \
463 if (!capable(CAP_SYS_ADMIN)) \
464 return -EPERM; \
465 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
466} \
467 \
468static ssize_t __iscsi_##prefix##_store_##name( \
469 struct iscsi_node_acl *nacl, \
470 const char *page, \
471 size_t count) \
472{ \
473 struct iscsi_node_auth *auth = &nacl->node_auth; \
474 \
475 if (!capable(CAP_SYS_ADMIN)) \
476 return -EPERM; \
477 \
0fbfc46f 478 snprintf(auth->name, sizeof(auth->name), "%s", page); \
e48354ce
NB		 479 if (!strncmp("NULL", auth->name, 4)) \
480 auth->naf_flags &= ~flags; \
481 else \
482 auth->naf_flags |= flags; \
483 \
484 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
485 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
486 auth->authenticate_target = 1; \
487 else \
488 auth->authenticate_target = 0; \
489 \
490 return count; \
491}
492
493#define __DEF_NACL_AUTH_INT(prefix, name) \
494static ssize_t __iscsi_##prefix##_show_##name( \
495 struct iscsi_node_acl *nacl, \
496 char *page) \
497{ \
498 struct iscsi_node_auth *auth = &nacl->node_auth; \
499 \
500 if (!capable(CAP_SYS_ADMIN)) \
501 return -EPERM; \
502 \
503 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
504}
505
506#define DEF_NACL_AUTH_STR(name, flags) \
507 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
508static ssize_t iscsi_nacl_auth_show_##name( \
509 struct se_node_acl *nacl, \
510 char *page) \
511{ \
512 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
513 struct iscsi_node_acl, se_node_acl), page); \
514} \
515static ssize_t iscsi_nacl_auth_store_##name( \
516 struct se_node_acl *nacl, \
517 const char *page, \
518 size_t count) \
519{ \
520 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
521 struct iscsi_node_acl, se_node_acl), page, count); \
522}
523
524#define DEF_NACL_AUTH_INT(name) \
525 __DEF_NACL_AUTH_INT(nacl_auth, name) \
526static ssize_t iscsi_nacl_auth_show_##name( \
527 struct se_node_acl *nacl, \
528 char *page) \
529{ \
530 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
531 struct iscsi_node_acl, se_node_acl), page); \
532}
533
534#define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
535#define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
536
537/*
538 * One-way authentication userid
539 */
540DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
541AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
542/*
543 * One-way authentication password
544 */
545DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
546AUTH_ATTR(password, S_IRUGO | S_IWUSR);
547/*
548 * Enforce mutual authentication
549 */
550DEF_NACL_AUTH_INT(authenticate_target);
551AUTH_ATTR_RO(authenticate_target);
552/*
553 * Mutual authentication userid
554 */
555DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
556AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
557/*
558 * Mutual authentication password
559 */
560DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
561AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
562
563static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
564 &iscsi_nacl_auth_userid.attr,
565 &iscsi_nacl_auth_password.attr,
566 &iscsi_nacl_auth_authenticate_target.attr,
567 &iscsi_nacl_auth_userid_mutual.attr,
568 &iscsi_nacl_auth_password_mutual.attr,
569 NULL,
570};
571
572/* End items for lio_target_nacl_auth_cit */
573
574/* Start items for lio_target_nacl_param_cit */
575
576#define DEF_NACL_PARAM(name) \
577static ssize_t iscsi_nacl_param_show_##name( \
578 struct se_node_acl *se_nacl, \
579 char *page) \
580{ \
581 struct iscsi_session *sess; \
582 struct se_session *se_sess; \
583 ssize_t rb; \
584 \
585 spin_lock_bh(&se_nacl->nacl_sess_lock); \
586 se_sess = se_nacl->nacl_sess; \
587 if (!se_sess) { \
588 rb = snprintf(page, PAGE_SIZE, \
589 "No Active iSCSI Session\n"); \
590 } else { \
591 sess = se_sess->fabric_sess_ptr; \
592 rb = snprintf(page, PAGE_SIZE, "%u\n", \
593 (u32)sess->sess_ops->name); \
594 } \
595 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
596 \
597 return rb; \
598}
599
600#define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
601
602DEF_NACL_PARAM(MaxConnections);
603NACL_PARAM_ATTR(MaxConnections);
604
605DEF_NACL_PARAM(InitialR2T);
606NACL_PARAM_ATTR(InitialR2T);
607
608DEF_NACL_PARAM(ImmediateData);
609NACL_PARAM_ATTR(ImmediateData);
610
611DEF_NACL_PARAM(MaxBurstLength);
612NACL_PARAM_ATTR(MaxBurstLength);
613
614DEF_NACL_PARAM(FirstBurstLength);
615NACL_PARAM_ATTR(FirstBurstLength);
616
617DEF_NACL_PARAM(DefaultTime2Wait);
618NACL_PARAM_ATTR(DefaultTime2Wait);
619
620DEF_NACL_PARAM(DefaultTime2Retain);
621NACL_PARAM_ATTR(DefaultTime2Retain);
622
623DEF_NACL_PARAM(MaxOutstandingR2T);
624NACL_PARAM_ATTR(MaxOutstandingR2T);
625
626DEF_NACL_PARAM(DataPDUInOrder);
627NACL_PARAM_ATTR(DataPDUInOrder);
628
629DEF_NACL_PARAM(DataSequenceInOrder);
630NACL_PARAM_ATTR(DataSequenceInOrder);
631
632DEF_NACL_PARAM(ErrorRecoveryLevel);
633NACL_PARAM_ATTR(ErrorRecoveryLevel);
634
635static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
636 &iscsi_nacl_param_MaxConnections.attr,
637 &iscsi_nacl_param_InitialR2T.attr,
638 &iscsi_nacl_param_ImmediateData.attr,
639 &iscsi_nacl_param_MaxBurstLength.attr,
640 &iscsi_nacl_param_FirstBurstLength.attr,
641 &iscsi_nacl_param_DefaultTime2Wait.attr,
642 &iscsi_nacl_param_DefaultTime2Retain.attr,
643 &iscsi_nacl_param_MaxOutstandingR2T.attr,
644 &iscsi_nacl_param_DataPDUInOrder.attr,
645 &iscsi_nacl_param_DataSequenceInOrder.attr,
646 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
647 NULL,
648};
649
650/* End items for lio_target_nacl_param_cit */
651
652/* Start items for lio_target_acl_cit */
653
654static ssize_t lio_target_nacl_show_info(
655 struct se_node_acl *se_nacl,
656 char *page)
657{
658 struct iscsi_session *sess;
659 struct iscsi_conn *conn;
660 struct se_session *se_sess;
661 ssize_t rb = 0;
662
663 spin_lock_bh(&se_nacl->nacl_sess_lock);
664 se_sess = se_nacl->nacl_sess;
665 if (!se_sess) {
666 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
667 " Endpoint: %s\n", se_nacl->initiatorname);
668 } else {
669 sess = se_sess->fabric_sess_ptr;
670
671 if (sess->sess_ops->InitiatorName)
672 rb += sprintf(page+rb, "InitiatorName: %s\n",
673 sess->sess_ops->InitiatorName);
674 if (sess->sess_ops->InitiatorAlias)
675 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
676 sess->sess_ops->InitiatorAlias);
677
678 rb += sprintf(page+rb, "LIO Session ID: %u "
679 "ISID: 0x%02x %02x %02x %02x %02x %02x "
680 "TSIH: %hu ", sess->sid,
681 sess->isid[0], sess->isid[1], sess->isid[2],
682 sess->isid[3], sess->isid[4], sess->isid[5],
683 sess->tsih);
684 rb += sprintf(page+rb, "SessionType: %s\n",
685 (sess->sess_ops->SessionType) ?
686 "Discovery" : "Normal");
687 rb += sprintf(page+rb, "Session State: ");
688 switch (sess->session_state) {
689 case TARG_SESS_STATE_FREE:
690 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
691 break;
692 case TARG_SESS_STATE_ACTIVE:
693 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
694 break;
695 case TARG_SESS_STATE_LOGGED_IN:
696 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
697 break;
698 case TARG_SESS_STATE_FAILED:
699 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
700 break;
701 case TARG_SESS_STATE_IN_CONTINUE:
702 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
703 break;
704 default:
705 rb += sprintf(page+rb, "ERROR: Unknown Session"
706 " State!\n");
707 break;
708 }
709
710 rb += sprintf(page+rb, "---------------------[iSCSI Session"
711 " Values]-----------------------\n");
712 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
713 " : MaxCmdSN : ITT : TTT\n");
714 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
715 " 0x%08x 0x%08x\n",
716 sess->cmdsn_window,
717 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
718 sess->exp_cmd_sn, sess->max_cmd_sn,
719 sess->init_task_tag, sess->targ_xfer_tag);
720 rb += sprintf(page+rb, "----------------------[iSCSI"
721 " Connections]-------------------------\n");
722
723 spin_lock(&sess->conn_lock);
724 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
725 rb += sprintf(page+rb, "CID: %hu Connection"
726 " State: ", conn->cid);
727 switch (conn->conn_state) {
728 case TARG_CONN_STATE_FREE:
729 rb += sprintf(page+rb,
730 "TARG_CONN_STATE_FREE\n");
731 break;
732 case TARG_CONN_STATE_XPT_UP:
733 rb += sprintf(page+rb,
734 "TARG_CONN_STATE_XPT_UP\n");
735 break;
736 case TARG_CONN_STATE_IN_LOGIN:
737 rb += sprintf(page+rb,
738 "TARG_CONN_STATE_IN_LOGIN\n");
739 break;
740 case TARG_CONN_STATE_LOGGED_IN:
741 rb += sprintf(page+rb,
742 "TARG_CONN_STATE_LOGGED_IN\n");
743 break;
744 case TARG_CONN_STATE_IN_LOGOUT:
745 rb += sprintf(page+rb,
746 "TARG_CONN_STATE_IN_LOGOUT\n");
747 break;
748 case TARG_CONN_STATE_LOGOUT_REQUESTED:
749 rb += sprintf(page+rb,
750 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
751 break;
752 case TARG_CONN_STATE_CLEANUP_WAIT:
753 rb += sprintf(page+rb,
754 "TARG_CONN_STATE_CLEANUP_WAIT\n");
755 break;
756 default:
757 rb += sprintf(page+rb,
758 "ERROR: Unknown Connection State!\n");
759 break;
760 }
761
762 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
763 (conn->network_transport == ISCSI_TCP) ?
764 "TCP" : "SCTP");
765 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
766 conn->stat_sn);
767 }
768 spin_unlock(&sess->conn_lock);
769 }
770 spin_unlock_bh(&se_nacl->nacl_sess_lock);
771
772 return rb;
773}
774
775TF_NACL_BASE_ATTR_RO(lio_target, info);
776
777static ssize_t lio_target_nacl_show_cmdsn_depth(
778 struct se_node_acl *se_nacl,
779 char *page)
780{
781 return sprintf(page, "%u\n", se_nacl->queue_depth);
782}
783
784static ssize_t lio_target_nacl_store_cmdsn_depth(
785 struct se_node_acl *se_nacl,
786 const char *page,
787 size_t count)
788{
789 struct se_portal_group *se_tpg = se_nacl->se_tpg;
790 struct iscsi_portal_group *tpg = container_of(se_tpg,
791 struct iscsi_portal_group, tpg_se_tpg);
792 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
e48354ce
NB		 793 u32 cmdsn_depth = 0;
794 int ret;
795
ad7babd2
JE		 796 ret = kstrtou32(page, 0, &cmdsn_depth);
797 if (ret)
798 return ret;
e48354ce
NB		 799 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
800 pr_err("Passed cmdsn_depth: %u exceeds"
801 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
802 TA_DEFAULT_CMDSN_DEPTH_MAX);
803 return -EINVAL;
804 }
805 acl_ci = &se_nacl->acl_group.cg_item;
806 if (!acl_ci) {
807 pr_err("Unable to locatel acl_ci\n");
808 return -EINVAL;
809 }
810 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
811 if (!tpg_ci) {
812 pr_err("Unable to locate tpg_ci\n");
813 return -EINVAL;
814 }
815 wwn_ci = &tpg_ci->ci_group->cg_item;
816 if (!wwn_ci) {
817 pr_err("Unable to locate config_item wwn_ci\n");
818 return -EINVAL;
819 }
820
821 if (iscsit_get_tpg(tpg) < 0)
822 return -EINVAL;
823 /*
824 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
825 */
826 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
827 config_item_name(acl_ci), cmdsn_depth, 1);
828
829 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
830 "InitiatorName: %s\n", config_item_name(wwn_ci),
831 config_item_name(tpg_ci), cmdsn_depth,
832 config_item_name(acl_ci));
833
834 iscsit_put_tpg(tpg);
835 return (!ret) ? count : (ssize_t)ret;
836}
837
838TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
839
79e62fc3
AG		 840static ssize_t lio_target_nacl_show_tag(
841 struct se_node_acl *se_nacl,
842 char *page)
843{
844 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
845}
846
847static ssize_t lio_target_nacl_store_tag(
848 struct se_node_acl *se_nacl,
849 const char *page,
850 size_t count)
851{
852 int ret;
853
854 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
855
856 if (ret < 0)
857 return ret;
858 return count;
859}
860
861TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
862
e48354ce
NB		 863static struct configfs_attribute *lio_target_initiator_attrs[] = {
864 &lio_target_nacl_info.attr,
865 &lio_target_nacl_cmdsn_depth.attr,
79e62fc3 866 &lio_target_nacl_tag.attr,
e48354ce
NB		 867 NULL,
868};
869
870static struct se_node_acl *lio_tpg_alloc_fabric_acl(
871 struct se_portal_group *se_tpg)
872{
873 struct iscsi_node_acl *acl;
874
875 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
876 if (!acl) {
877 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
878 return NULL;
879 }
880
881 return &acl->se_node_acl;
882}
883
884static struct se_node_acl *lio_target_make_nodeacl(
885 struct se_portal_group *se_tpg,
886 struct config_group *group,
887 const char *name)
888{
889 struct config_group *stats_cg;
890 struct iscsi_node_acl *acl;
891 struct se_node_acl *se_nacl_new, *se_nacl;
892 struct iscsi_portal_group *tpg = container_of(se_tpg,
893 struct iscsi_portal_group, tpg_se_tpg);
894 u32 cmdsn_depth;
895
896 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
897 if (!se_nacl_new)
898 return ERR_PTR(-ENOMEM);
899
b7eec2cd 900 cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
e48354ce
NB		 901 /*
902 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
903 * when converting a NdoeACL from demo mode -> explict
904 */
905 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
906 name, cmdsn_depth);
907 if (IS_ERR(se_nacl))
908 return se_nacl;
909
d0628334
NB		 910 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
911 stats_cg = &se_nacl->acl_fabric_stat_group;
e48354ce 912
13f6a914 913 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
e48354ce
NB		 914 GFP_KERNEL);
915 if (!stats_cg->default_groups) {
916 pr_err("Unable to allocate memory for"
917 " stats_cg->default_groups\n");
918 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
919 kfree(acl);
920 return ERR_PTR(-ENOMEM);
921 }
922
b7eec2cd 923 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
e48354ce 924 stats_cg->default_groups[1] = NULL;
b7eec2cd 925 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
e48354ce
NB		 926 "iscsi_sess_stats", &iscsi_stat_sess_cit);
927
928 return se_nacl;
929}
930
931static void lio_target_drop_nodeacl(
932 struct se_node_acl *se_nacl)
933{
934 struct se_portal_group *se_tpg = se_nacl->se_tpg;
935 struct iscsi_node_acl *acl = container_of(se_nacl,
936 struct iscsi_node_acl, se_node_acl);
937 struct config_item *df_item;
938 struct config_group *stats_cg;
939 int i;
940
941 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
942 for (i = 0; stats_cg->default_groups[i]; i++) {
943 df_item = &stats_cg->default_groups[i]->cg_item;
944 stats_cg->default_groups[i] = NULL;
945 config_item_put(df_item);
946 }
947 kfree(stats_cg->default_groups);
948
949 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
950 kfree(acl);
951}
952
953/* End items for lio_target_acl_cit */
954
955/* Start items for lio_target_tpg_attrib_cit */
956
957#define DEF_TPG_ATTRIB(name) \
958 \
959static ssize_t iscsi_tpg_attrib_show_##name( \
960 struct se_portal_group *se_tpg, \
961 char *page) \
962{ \
963 struct iscsi_portal_group *tpg = container_of(se_tpg, \
964 struct iscsi_portal_group, tpg_se_tpg); \
965 ssize_t rb; \
966 \
967 if (iscsit_get_tpg(tpg) < 0) \
968 return -EINVAL; \
969 \
b7eec2cd 970 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
e48354ce
NB		 971 iscsit_put_tpg(tpg); \
972 return rb; \
973} \
974 \
975static ssize_t iscsi_tpg_attrib_store_##name( \
976 struct se_portal_group *se_tpg, \
977 const char *page, \
978 size_t count) \
979{ \
980 struct iscsi_portal_group *tpg = container_of(se_tpg, \
981 struct iscsi_portal_group, tpg_se_tpg); \
e48354ce
NB		 982 u32 val; \
983 int ret; \
984 \
985 if (iscsit_get_tpg(tpg) < 0) \
986 return -EINVAL; \
987 \
ad7babd2
JE		 988 ret = kstrtou32(page, 0, &val); \
989 if (ret) \
990 goto out; \
e48354ce
NB		 991 ret = iscsit_ta_##name(tpg, val); \
992 if (ret < 0) \
993 goto out; \
994 \
995 iscsit_put_tpg(tpg); \
996 return count; \
997out: \
998 iscsit_put_tpg(tpg); \
999 return ret; \
1000}
1001
1002#define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1003
1004/*
1005 * Define iscsi_tpg_attrib_s_authentication
1006 */
1007DEF_TPG_ATTRIB(authentication);
1008TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1009/*
1010 * Define iscsi_tpg_attrib_s_login_timeout
1011 */
1012DEF_TPG_ATTRIB(login_timeout);
1013TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1014/*
1015 * Define iscsi_tpg_attrib_s_netif_timeout
1016 */
1017DEF_TPG_ATTRIB(netif_timeout);
1018TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1019/*
1020 * Define iscsi_tpg_attrib_s_generate_node_acls
1021 */
1022DEF_TPG_ATTRIB(generate_node_acls);
1023TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1024/*
1025 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1026 */
1027DEF_TPG_ATTRIB(default_cmdsn_depth);
1028TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1029/*
1030 Define iscsi_tpg_attrib_s_cache_dynamic_acls
1031 */
1032DEF_TPG_ATTRIB(cache_dynamic_acls);
1033TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1034/*
1035 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1036 */
1037DEF_TPG_ATTRIB(demo_mode_write_protect);
1038TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1039/*
1040 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1041 */
1042DEF_TPG_ATTRIB(prod_mode_write_protect);
1043TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
4c54b6cf
TG		 1044/*
1045 * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1046 */
1047DEF_TPG_ATTRIB(demo_mode_discovery);
1048TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
d1fa7a1d
NB		 1049/*
1050 * Define iscsi_tpg_attrib_s_default_erl
1051 */
1052DEF_TPG_ATTRIB(default_erl);
1053TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
e48354ce
NB		 1054
1055static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1056 &iscsi_tpg_attrib_authentication.attr,
1057 &iscsi_tpg_attrib_login_timeout.attr,
1058 &iscsi_tpg_attrib_netif_timeout.attr,
1059 &iscsi_tpg_attrib_generate_node_acls.attr,
1060 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1061 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1062 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1063 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
4c54b6cf 1064 &iscsi_tpg_attrib_demo_mode_discovery.attr,
d1fa7a1d 1065 &iscsi_tpg_attrib_default_erl.attr,
e48354ce
NB		 1066 NULL,
1067};
1068
1069/* End items for lio_target_tpg_attrib_cit */
1070
c3e51442
NB		 1071/* Start items for lio_target_tpg_auth_cit */
1072
1073#define __DEF_TPG_AUTH_STR(prefix, name, flags) \
1074static ssize_t __iscsi_##prefix##_show_##name( \
1075 struct se_portal_group *se_tpg, \
1076 char *page) \
1077{ \
1078 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1079 struct iscsi_portal_group, tpg_se_tpg); \
1080 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1081 \
1082 if (!capable(CAP_SYS_ADMIN)) \
1083 return -EPERM; \
1084 \
1085 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
1086} \
1087 \
1088static ssize_t __iscsi_##prefix##_store_##name( \
1089 struct se_portal_group *se_tpg, \
1090 const char *page, \
1091 size_t count) \
1092{ \
1093 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1094 struct iscsi_portal_group, tpg_se_tpg); \
1095 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1096 \
1097 if (!capable(CAP_SYS_ADMIN)) \
1098 return -EPERM; \
1099 \
37b32c6f 1100 snprintf(auth->name, sizeof(auth->name), "%s", page); \
c3e51442
NB		 1101 if (!(strncmp("NULL", auth->name, 4))) \
1102 auth->naf_flags &= ~flags; \
1103 else \
1104 auth->naf_flags |= flags; \
1105 \
1106 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
1107 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
1108 auth->authenticate_target = 1; \
1109 else \
1110 auth->authenticate_target = 0; \
1111 \
1112 return count; \
1113}
1114
1115#define __DEF_TPG_AUTH_INT(prefix, name) \
1116static ssize_t __iscsi_##prefix##_show_##name( \
1117 struct se_portal_group *se_tpg, \
1118 char *page) \
1119{ \
1120 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1121 struct iscsi_portal_group, tpg_se_tpg); \
1122 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1123 \
1124 if (!capable(CAP_SYS_ADMIN)) \
1125 return -EPERM; \
1126 \
1127 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
1128}
1129
1130#define DEF_TPG_AUTH_STR(name, flags) \
1131 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
1132static ssize_t iscsi_tpg_auth_show_##name( \
1133 struct se_portal_group *se_tpg, \
1134 char *page) \
1135{ \
1136 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1137} \
1138 \
1139static ssize_t iscsi_tpg_auth_store_##name( \
1140 struct se_portal_group *se_tpg, \
1141 const char *page, \
1142 size_t count) \
1143{ \
1144 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \
1145}
1146
1147#define DEF_TPG_AUTH_INT(name) \
1148 __DEF_TPG_AUTH_INT(tpg_auth, name) \
1149static ssize_t iscsi_tpg_auth_show_##name( \
1150 struct se_portal_group *se_tpg, \
1151 char *page) \
1152{ \
1153 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1154}
1155
1156#define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1157#define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1158
1159/*
1160 * * One-way authentication userid
1161 * */
1162DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1163TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1164/*
1165 * * One-way authentication password
1166 * */
1167DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1168TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1169/*
1170 * * Enforce mutual authentication
1171 * */
1172DEF_TPG_AUTH_INT(authenticate_target);
1173TPG_AUTH_ATTR_RO(authenticate_target);
1174/*
1175 * * Mutual authentication userid
1176 * */
1177DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1178TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1179/*
1180 * * Mutual authentication password
1181 * */
1182DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1183TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1184
1185static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1186 &iscsi_tpg_auth_userid.attr,
1187 &iscsi_tpg_auth_password.attr,
1188 &iscsi_tpg_auth_authenticate_target.attr,
1189 &iscsi_tpg_auth_userid_mutual.attr,
1190 &iscsi_tpg_auth_password_mutual.attr,
1191 NULL,
1192};
1193
1194/* End items for lio_target_tpg_auth_cit */
1195
e48354ce
NB		 1196/* Start items for lio_target_tpg_param_cit */
1197
1198#define DEF_TPG_PARAM(name) \
1199static ssize_t iscsi_tpg_param_show_##name( \
1200 struct se_portal_group *se_tpg, \
1201 char *page) \
1202{ \
1203 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1204 struct iscsi_portal_group, tpg_se_tpg); \
1205 struct iscsi_param *param; \
1206 ssize_t rb; \
1207 \
1208 if (iscsit_get_tpg(tpg) < 0) \
1209 return -EINVAL; \
1210 \
1211 param = iscsi_find_param_from_key(__stringify(name), \
1212 tpg->param_list); \
1213 if (!param) { \
1214 iscsit_put_tpg(tpg); \
1215 return -EINVAL; \
1216 } \
1217 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1218 \
1219 iscsit_put_tpg(tpg); \
1220 return rb; \
1221} \
1222static ssize_t iscsi_tpg_param_store_##name( \
1223 struct se_portal_group *se_tpg, \
1224 const char *page, \
1225 size_t count) \
1226{ \
1227 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1228 struct iscsi_portal_group, tpg_se_tpg); \
1229 char *buf; \
ad7babd2 1230 int ret, len; \
e48354ce
NB		 1231 \
1232 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1233 if (!buf) \
1234 return -ENOMEM; \
ad7babd2
JE		 1235 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1236 if (isspace(buf[len-1])) \
1237 buf[len-1] = '\0'; /* Kill newline */ \
e48354ce
NB		 1238 \
1239 if (iscsit_get_tpg(tpg) < 0) { \
1240 kfree(buf); \
1241 return -EINVAL; \
1242 } \
1243 \
1244 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1245 if (ret < 0) \
1246 goto out; \
1247 \
1248 kfree(buf); \
1249 iscsit_put_tpg(tpg); \
1250 return count; \
1251out: \
1252 kfree(buf); \
1253 iscsit_put_tpg(tpg); \
1254 return -EINVAL; \
1255}
1256
1257#define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1258
1259DEF_TPG_PARAM(AuthMethod);
1260TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1261
1262DEF_TPG_PARAM(HeaderDigest);
1263TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1264
1265DEF_TPG_PARAM(DataDigest);
1266TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1267
1268DEF_TPG_PARAM(MaxConnections);
1269TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1270
1271DEF_TPG_PARAM(TargetAlias);
1272TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1273
1274DEF_TPG_PARAM(InitialR2T);
1275TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1276
1277DEF_TPG_PARAM(ImmediateData);
1278TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1279
1280DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1281TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1282
e004cb25
NB		 1283DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1284TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1285
e48354ce
NB		 1286DEF_TPG_PARAM(MaxBurstLength);
1287TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1288
1289DEF_TPG_PARAM(FirstBurstLength);
1290TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1291
1292DEF_TPG_PARAM(DefaultTime2Wait);
1293TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1294
1295DEF_TPG_PARAM(DefaultTime2Retain);
1296TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1297
1298DEF_TPG_PARAM(MaxOutstandingR2T);
1299TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1300
1301DEF_TPG_PARAM(DataPDUInOrder);
1302TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1303
1304DEF_TPG_PARAM(DataSequenceInOrder);
1305TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1306
1307DEF_TPG_PARAM(ErrorRecoveryLevel);
1308TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1309
1310DEF_TPG_PARAM(IFMarker);
1311TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1312
1313DEF_TPG_PARAM(OFMarker);
1314TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1315
1316DEF_TPG_PARAM(IFMarkInt);
1317TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1318
1319DEF_TPG_PARAM(OFMarkInt);
1320TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1321
1322static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1323 &iscsi_tpg_param_AuthMethod.attr,
1324 &iscsi_tpg_param_HeaderDigest.attr,
1325 &iscsi_tpg_param_DataDigest.attr,
1326 &iscsi_tpg_param_MaxConnections.attr,
1327 &iscsi_tpg_param_TargetAlias.attr,
1328 &iscsi_tpg_param_InitialR2T.attr,
1329 &iscsi_tpg_param_ImmediateData.attr,
1330 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
e004cb25 1331 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
e48354ce
NB		 1332 &iscsi_tpg_param_MaxBurstLength.attr,
1333 &iscsi_tpg_param_FirstBurstLength.attr,
1334 &iscsi_tpg_param_DefaultTime2Wait.attr,
1335 &iscsi_tpg_param_DefaultTime2Retain.attr,
1336 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1337 &iscsi_tpg_param_DataPDUInOrder.attr,
1338 &iscsi_tpg_param_DataSequenceInOrder.attr,
1339 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1340 &iscsi_tpg_param_IFMarker.attr,
1341 &iscsi_tpg_param_OFMarker.attr,
1342 &iscsi_tpg_param_IFMarkInt.attr,
1343 &iscsi_tpg_param_OFMarkInt.attr,
1344 NULL,
1345};
1346
1347/* End items for lio_target_tpg_param_cit */
1348
1349/* Start items for lio_target_tpg_cit */
1350
1351static ssize_t lio_target_tpg_show_enable(
1352 struct se_portal_group *se_tpg,
1353 char *page)
1354{
1355 struct iscsi_portal_group *tpg = container_of(se_tpg,
1356 struct iscsi_portal_group, tpg_se_tpg);
1357 ssize_t len;
1358
1359 spin_lock(&tpg->tpg_state_lock);
1360 len = sprintf(page, "%d\n",
1361 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1362 spin_unlock(&tpg->tpg_state_lock);
1363
1364 return len;
1365}
1366
1367static ssize_t lio_target_tpg_store_enable(
1368 struct se_portal_group *se_tpg,
1369 const char *page,
1370 size_t count)
1371{
1372 struct iscsi_portal_group *tpg = container_of(se_tpg,
1373 struct iscsi_portal_group, tpg_se_tpg);
e48354ce 1374 u32 op;
ad7babd2 1375 int ret;
e48354ce 1376
ad7babd2
JE		 1377 ret = kstrtou32(page, 0, &op);
1378 if (ret)
1379 return ret;
e48354ce
NB		 1380 if ((op != 1) && (op != 0)) {
1381 pr_err("Illegal value for tpg_enable: %u\n", op);
1382 return -EINVAL;
1383 }
1384
1385 ret = iscsit_get_tpg(tpg);
1386 if (ret < 0)
1387 return -EINVAL;
1388
1389 if (op) {
1390 ret = iscsit_tpg_enable_portal_group(tpg);
1391 if (ret < 0)
1392 goto out;
1393 } else {
1394 /*
1395 * iscsit_tpg_disable_portal_group() assumes force=1
1396 */
1397 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1398 if (ret < 0)
1399 goto out;
1400 }
1401
1402 iscsit_put_tpg(tpg);
1403 return count;
1404out:
1405 iscsit_put_tpg(tpg);
1406 return -EINVAL;
1407}
1408
1409TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1410
1411static struct configfs_attribute *lio_target_tpg_attrs[] = {
1412 &lio_target_tpg_enable.attr,
1413 NULL,
1414};
1415
1416/* End items for lio_target_tpg_cit */
1417
1418/* Start items for lio_target_tiqn_cit */
1419
fceb5bc7 1420static struct se_portal_group *lio_target_tiqn_addtpg(
e48354ce
NB		 1421 struct se_wwn *wwn,
1422 struct config_group *group,
1423 const char *name)
1424{
1425 struct iscsi_portal_group *tpg;
1426 struct iscsi_tiqn *tiqn;
ad7babd2
JE		 1427 char *tpgt_str;
1428 int ret;
1429 u16 tpgt;
e48354ce
NB		 1430
1431 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1432 /*
1433 * Only tpgt_# directory groups can be created below
1434 * target/iscsi/iqn.superturodiskarry/
ad7babd2 1435 */
e48354ce
NB		 1436 tpgt_str = strstr(name, "tpgt_");
1437 if (!tpgt_str) {
1438 pr_err("Unable to locate \"tpgt_#\" directory"
1439 " group\n");
1440 return NULL;
1441 }
1442 tpgt_str += 5; /* Skip ahead of "tpgt_" */
ad7babd2
JE		 1443 ret = kstrtou16(tpgt_str, 0, &tpgt);
1444 if (ret)
1445 return NULL;
e48354ce
NB		 1446
1447 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1448 if (!tpg)
1449 return NULL;
1450
1451 ret = core_tpg_register(
1452 &lio_target_fabric_configfs->tf_ops,
8359cf43 1453 wwn, &tpg->tpg_se_tpg, tpg,
e48354ce
NB		 1454 TRANSPORT_TPG_TYPE_NORMAL);
1455 if (ret < 0)
1456 return NULL;
1457
1458 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1459 if (ret != 0)
1460 goto out;
1461
1462 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1463 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1464 name);
1465 return &tpg->tpg_se_tpg;
1466out:
1467 core_tpg_deregister(&tpg->tpg_se_tpg);
1468 kfree(tpg);
1469 return NULL;
1470}
1471
fceb5bc7 1472static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
e48354ce
NB		 1473{
1474 struct iscsi_portal_group *tpg;
1475 struct iscsi_tiqn *tiqn;
1476
1477 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1478 tiqn = tpg->tpg_tiqn;
1479 /*
1480 * iscsit_tpg_del_portal_group() assumes force=1
1481 */
1482 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1483 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1484}
1485
1486/* End items for lio_target_tiqn_cit */
1487
1488/* Start LIO-Target TIQN struct contig_item lio_target_cit */
1489
1490static ssize_t lio_target_wwn_show_attr_lio_version(
1491 struct target_fabric_configfs *tf,
1492 char *page)
1493{
4c76251e 1494 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
e48354ce
NB		 1495}
1496
1497TF_WWN_ATTR_RO(lio_target, lio_version);
1498
1499static struct configfs_attribute *lio_target_wwn_attrs[] = {
1500 &lio_target_wwn_lio_version.attr,
1501 NULL,
1502};
1503
fceb5bc7 1504static struct se_wwn *lio_target_call_coreaddtiqn(
e48354ce
NB		 1505 struct target_fabric_configfs *tf,
1506 struct config_group *group,
1507 const char *name)
1508{
1509 struct config_group *stats_cg;
1510 struct iscsi_tiqn *tiqn;
1511
1512 tiqn = iscsit_add_tiqn((unsigned char *)name);
1513 if (IS_ERR(tiqn))
e1750ba2 1514 return ERR_CAST(tiqn);
e48354ce
NB		 1515 /*
1516 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1517 */
1518 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1519
13f6a914 1520 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
e48354ce
NB		 1521 GFP_KERNEL);
1522 if (!stats_cg->default_groups) {
1523 pr_err("Unable to allocate memory for"
1524 " stats_cg->default_groups\n");
1525 iscsit_del_tiqn(tiqn);
1526 return ERR_PTR(-ENOMEM);
1527 }
1528
b7eec2cd
AG		 1529 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1530 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1531 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1532 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1533 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
e48354ce 1534 stats_cg->default_groups[5] = NULL;
b7eec2cd 1535 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
e48354ce 1536 "iscsi_instance", &iscsi_stat_instance_cit);
b7eec2cd 1537 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
e48354ce 1538 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
b7eec2cd 1539 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
e48354ce 1540 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
b7eec2cd 1541 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
e48354ce 1542 "iscsi_login_stats", &iscsi_stat_login_cit);
b7eec2cd 1543 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
e48354ce
NB		 1544 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1545
1546 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1547 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1548 " %s\n", name);
1549 return &tiqn->tiqn_wwn;
1550}
1551
fceb5bc7 1552static void lio_target_call_coredeltiqn(
e48354ce
NB		 1553 struct se_wwn *wwn)
1554{
1555 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1556 struct config_item *df_item;
1557 struct config_group *stats_cg;
1558 int i;
1559
1560 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1561 for (i = 0; stats_cg->default_groups[i]; i++) {
1562 df_item = &stats_cg->default_groups[i]->cg_item;
1563 stats_cg->default_groups[i] = NULL;
1564 config_item_put(df_item);
1565 }
1566 kfree(stats_cg->default_groups);
1567
1568 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1569 tiqn->tiqn);
1570 iscsit_del_tiqn(tiqn);
1571}
1572
1573/* End LIO-Target TIQN struct contig_lio_target_cit */
1574
1575/* Start lio_target_discovery_auth_cit */
1576
1577#define DEF_DISC_AUTH_STR(name, flags) \
1578 __DEF_NACL_AUTH_STR(disc, name, flags) \
1579static ssize_t iscsi_disc_show_##name( \
1580 struct target_fabric_configfs *tf, \
1581 char *page) \
1582{ \
1583 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1584 page); \
1585} \
1586static ssize_t iscsi_disc_store_##name( \
1587 struct target_fabric_configfs *tf, \
1588 const char *page, \
1589 size_t count) \
1590{ \
1591 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1592 page, count); \
1593}
1594
1595#define DEF_DISC_AUTH_INT(name) \
1596 __DEF_NACL_AUTH_INT(disc, name) \
1597static ssize_t iscsi_disc_show_##name( \
1598 struct target_fabric_configfs *tf, \
1599 char *page) \
1600{ \
1601 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1602 page); \
1603}
1604
1605#define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1606#define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1607
1608/*
1609 * One-way authentication userid
1610 */
1611DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1612DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1613/*
1614 * One-way authentication password
1615 */
1616DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1617DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1618/*
1619 * Enforce mutual authentication
1620 */
1621DEF_DISC_AUTH_INT(authenticate_target);
1622DISC_AUTH_ATTR_RO(authenticate_target);
1623/*
1624 * Mutual authentication userid
1625 */
1626DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1627DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1628/*
1629 * Mutual authentication password
1630 */
1631DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1632DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1633
1634/*
1635 * enforce_discovery_auth
1636 */
1637static ssize_t iscsi_disc_show_enforce_discovery_auth(
1638 struct target_fabric_configfs *tf,
1639 char *page)
1640{
1641 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1642
1643 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1644}
1645
1646static ssize_t iscsi_disc_store_enforce_discovery_auth(
1647 struct target_fabric_configfs *tf,
1648 const char *page,
1649 size_t count)
1650{
1651 struct iscsi_param *param;
1652 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
e48354ce 1653 u32 op;
ad7babd2 1654 int err;
e48354ce 1655
ad7babd2
JE		 1656 err = kstrtou32(page, 0, &op);
1657 if (err)
1658 return -EINVAL;
e48354ce
NB		 1659 if ((op != 1) && (op != 0)) {
1660 pr_err("Illegal value for enforce_discovery_auth:"
1661 " %u\n", op);
1662 return -EINVAL;
1663 }
1664
1665 if (!discovery_tpg) {
1666 pr_err("iscsit_global->discovery_tpg is NULL\n");
1667 return -EINVAL;
1668 }
1669
1670 param = iscsi_find_param_from_key(AUTHMETHOD,
1671 discovery_tpg->param_list);
1672 if (!param)
1673 return -EINVAL;
1674
1675 if (op) {
1676 /*
1677 * Reset the AuthMethod key to CHAP.
1678 */
1679 if (iscsi_update_param_value(param, CHAP) < 0)
1680 return -EINVAL;
1681
1682 discovery_tpg->tpg_attrib.authentication = 1;
1683 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1684 pr_debug("LIO-CORE[0] Successfully enabled"
1685 " authentication enforcement for iSCSI"
1686 " Discovery TPG\n");
1687 } else {
1688 /*
1689 * Reset the AuthMethod key to CHAP,None
1690 */
1691 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1692 return -EINVAL;
1693
1694 discovery_tpg->tpg_attrib.authentication = 0;
1695 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1696 pr_debug("LIO-CORE[0] Successfully disabled"
1697 " authentication enforcement for iSCSI"
1698 " Discovery TPG\n");
1699 }
1700
1701 return count;
1702}
1703
1704DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1705
1706static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1707 &iscsi_disc_userid.attr,
1708 &iscsi_disc_password.attr,
1709 &iscsi_disc_authenticate_target.attr,
1710 &iscsi_disc_userid_mutual.attr,
1711 &iscsi_disc_password_mutual.attr,
1712 &iscsi_disc_enforce_discovery_auth.attr,
1713 NULL,
1714};
1715
1716/* End lio_target_discovery_auth_cit */
1717
1718/* Start functions for target_core_fabric_ops */
1719
1720static char *iscsi_get_fabric_name(void)
1721{
1722 return "iSCSI";
1723}
1724
1725static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1726{
1727 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1728
66c7db68
CH		 1729 /* only used for printks or comparism with ->ref_task_tag */
1730 return (__force u32)cmd->init_task_tag;
e48354ce
NB		 1731}
1732
1733static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1734{
1735 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1736
1737 return cmd->i_state;
1738}
1739
e48354ce
NB		 1740static u32 lio_sess_get_index(struct se_session *se_sess)
1741{
1742 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1743
1744 return sess->session_index;
1745}
1746
1747static u32 lio_sess_get_initiator_sid(
1748 struct se_session *se_sess,
1749 unsigned char *buf,
1750 u32 size)
1751{
1752 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1753 /*
1754 * iSCSI Initiator Session Identifier from RFC-3720.
1755 */
1756 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1757 sess->isid[0], sess->isid[1], sess->isid[2],
1758 sess->isid[3], sess->isid[4], sess->isid[5]);
1759}
1760
1761static int lio_queue_data_in(struct se_cmd *se_cmd)
1762{
1763 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1764
1765 cmd->i_state = ISTATE_SEND_DATAIN;
2ec5a8c1
NB		 1766 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1767
e48354ce
NB		 1768 return 0;
1769}
1770
1771static int lio_write_pending(struct se_cmd *se_cmd)
1772{
1773 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
3e1c81a9 1774 struct iscsi_conn *conn = cmd->conn;
e48354ce
NB		 1775
1776 if (!cmd->immediate_data && !cmd->unsolicited_data)
3e1c81a9 1777 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
e48354ce
NB		 1778
1779 return 0;
1780}
1781
1782static int lio_write_pending_status(struct se_cmd *se_cmd)
1783{
1784 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1785 int ret;
1786
1787 spin_lock_bh(&cmd->istate_lock);
1788 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1789 spin_unlock_bh(&cmd->istate_lock);
1790
1791 return ret;
1792}
1793
1794static int lio_queue_status(struct se_cmd *se_cmd)
1795{
1796 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1797
1798 cmd->i_state = ISTATE_SEND_STATUS;
5e8e6b4b
NB		 1799
1800 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1801 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1802 return 0;
1803 }
2ec5a8c1
NB		 1804 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1805
e48354ce
NB		 1806 return 0;
1807}
1808
b79fafac 1809static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
e48354ce
NB		 1810{
1811 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1812
1813 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1814 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
e48354ce
NB		 1815}
1816
1817static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1818{
1819 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1820
1821 return &tpg->tpg_tiqn->tiqn[0];
1822}
1823
1824static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1825{
1826 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1827
1828 return tpg->tpgt;
1829}
1830
1831static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1832{
1833 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1834
b7eec2cd 1835 return tpg->tpg_attrib.default_cmdsn_depth;
e48354ce
NB		 1836}
1837
1838static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1839{
1840 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1841
b7eec2cd 1842 return tpg->tpg_attrib.generate_node_acls;
e48354ce
NB		 1843}
1844
1845static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1846{
1847 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1848
b7eec2cd 1849 return tpg->tpg_attrib.cache_dynamic_acls;
e48354ce
NB		 1850}
1851
1852static int lio_tpg_check_demo_mode_write_protect(
1853 struct se_portal_group *se_tpg)
1854{
1855 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1856
b7eec2cd 1857 return tpg->tpg_attrib.demo_mode_write_protect;
e48354ce
NB		 1858}
1859
1860static int lio_tpg_check_prod_mode_write_protect(
1861 struct se_portal_group *se_tpg)
1862{
1863 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1864
b7eec2cd 1865 return tpg->tpg_attrib.prod_mode_write_protect;
e48354ce
NB		 1866}
1867
1868static void lio_tpg_release_fabric_acl(
1869 struct se_portal_group *se_tpg,
1870 struct se_node_acl *se_acl)
1871{
1872 struct iscsi_node_acl *acl = container_of(se_acl,
1873 struct iscsi_node_acl, se_node_acl);
1874 kfree(acl);
1875}
1876
1877/*
1878 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1879 *
1880 * Also, this function calls iscsit_inc_session_usage_count() on the
1881 * struct iscsi_session in question.
1882 */
1883static int lio_tpg_shutdown_session(struct se_session *se_sess)
1884{
1885 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1886
1887 spin_lock(&sess->conn_lock);
1888 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1889 atomic_read(&sess->session_logout) ||
1890 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1891 spin_unlock(&sess->conn_lock);
1892 return 0;
1893 }
1894 atomic_set(&sess->session_reinstatement, 1);
1895 spin_unlock(&sess->conn_lock);
1896
e48354ce 1897 iscsit_stop_time2retain_timer(sess);
99367f01 1898 iscsit_stop_session(sess, 1, 1);
e48354ce
NB		 1899
1900 return 1;
1901}
1902
1903/*
1904 * Calls iscsit_dec_session_usage_count() as inverse of
1905 * lio_tpg_shutdown_session()
1906 */
1907static void lio_tpg_close_session(struct se_session *se_sess)
1908{
1909 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1910 /*
1911 * If the iSCSI Session for the iSCSI Initiator Node exists,
1912 * forcefully shutdown the iSCSI NEXUS.
1913 */
e48354ce
NB		 1914 iscsit_close_session(sess);
1915}
1916
e48354ce
NB		 1917static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1918{
1919 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1920
1921 return tpg->tpg_tiqn->tiqn_index;
1922}
1923
1924static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1925{
1926 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1927 se_node_acl);
d1fa7a1d
NB		 1928 struct se_portal_group *se_tpg = se_acl->se_tpg;
1929 struct iscsi_portal_group *tpg = container_of(se_tpg,
1930 struct iscsi_portal_group, tpg_se_tpg);
e48354ce 1931
b7eec2cd 1932 acl->node_attrib.nacl = acl;
d1fa7a1d 1933 iscsit_set_default_node_attribues(acl, tpg);
e48354ce
NB		 1934}
1935
3e1c81a9
NB		 1936static int lio_check_stop_free(struct se_cmd *se_cmd)
1937{
1938 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1939}
1940
e48354ce
NB		 1941static void lio_release_cmd(struct se_cmd *se_cmd)
1942{
1943 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1944
cdb72665 1945 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
d703ce2f 1946 iscsit_release_cmd(cmd);
e48354ce
NB		 1947}
1948
1949/* End functions for target_core_fabric_ops */
1950
1951int iscsi_target_register_configfs(void)
1952{
1953 struct target_fabric_configfs *fabric;
1954 int ret;
1955
1956 lio_target_fabric_configfs = NULL;
1957 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1958 if (IS_ERR(fabric)) {
1959 pr_err("target_fabric_configfs_init() for"
1960 " LIO-Target failed!\n");
1961 return PTR_ERR(fabric);
1962 }
1963 /*
1964 * Setup the fabric API of function pointers used by target_core_mod..
1965 */
1966 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1967 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1968 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1969 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1970 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1971 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1972 fabric->tf_ops.tpg_get_pr_transport_id_len =
1973 &iscsi_get_pr_transport_id_len;
1974 fabric->tf_ops.tpg_parse_pr_out_transport_id =
1975 &iscsi_parse_pr_out_transport_id;
1976 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1977 fabric->tf_ops.tpg_check_demo_mode_cache =
1978 &lio_tpg_check_demo_mode_cache;
1979 fabric->tf_ops.tpg_check_demo_mode_write_protect =
1980 &lio_tpg_check_demo_mode_write_protect;
1981 fabric->tf_ops.tpg_check_prod_mode_write_protect =
1982 &lio_tpg_check_prod_mode_write_protect;
1983 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1984 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1985 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
3e1c81a9 1986 fabric->tf_ops.check_stop_free = &lio_check_stop_free,
e48354ce
NB		 1987 fabric->tf_ops.release_cmd = &lio_release_cmd;
1988 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1989 fabric->tf_ops.close_session = &lio_tpg_close_session;
e48354ce
NB		 1990 fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1991 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1992 fabric->tf_ops.write_pending = &lio_write_pending;
1993 fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1994 fabric->tf_ops.set_default_node_attributes =
1995 &lio_set_default_node_attributes;
1996 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1997 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1998 fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1999 fabric->tf_ops.queue_status = &lio_queue_status;
2000 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
e48354ce
NB		 2001 /*
2002 * Setup function pointers for generic logic in target_core_fabric_configfs.c
2003 */
2004 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
2005 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
2006 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
2007 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
2008 fabric->tf_ops.fabric_post_link = NULL;
2009 fabric->tf_ops.fabric_pre_unlink = NULL;
2010 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
2011 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
2012 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
2013 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
2014 /*
2015 * Setup default attribute lists for various fabric->tf_cit_tmpl
2016 * sturct config_item_type's
2017 */
d80e224d
AG		 2018 fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
2019 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
2020 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
2021 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
2022 fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
2023 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
2024 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
2025 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
2026 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
2027 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
2028 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
e48354ce
NB		 2029
2030 ret = target_fabric_configfs_register(fabric);
2031 if (ret < 0) {
2032 pr_err("target_fabric_configfs_register() for"
2033 " LIO-Target failed!\n");
2034 target_fabric_configfs_free(fabric);
2035 return ret;
2036 }
2037
2038 lio_target_fabric_configfs = fabric;
2039 pr_debug("LIO_TARGET[0] - Set fabric ->"
2040 " lio_target_fabric_configfs\n");
2041 return 0;
2042}
2043
2044
2045void iscsi_target_deregister_configfs(void)
2046{
2047 if (!lio_target_fabric_configfs)
2048 return;
2049 /*
2050 * Shutdown discovery sessions and disable discovery TPG
2051 */
2052 if (iscsit_global->discovery_tpg)
2053 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2054
2055 target_fabric_configfs_deregister(lio_target_fabric_configfs);
2056 lio_target_fabric_configfs = NULL;
2057 pr_debug("LIO_TARGET[0] - Cleared"
2058 " lio_target_fabric_configfs\n");
2059}
Linux 6.x block layer and io_uring tree(s)