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iscsi_target_configfs.c
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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 <[email protected]>
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>
23 #include <linux/export.h>
24 #include <linux/inet.h>
25 #include <target/target_core_base.h>
26 #include <target/target_core_fabric.h>
27 #include <target/target_core_fabric_configfs.h>
28 #include <target/target_core_configfs.h>
29 #include <target/configfs_macros.h>
30 
31 #include "iscsi_target_core.h"
32 #include "iscsi_target_parameters.h"
33 #include "iscsi_target_device.h"
34 #include "iscsi_target_erl0.h"
35 #include "iscsi_target_nodeattrib.h"
36 #include "iscsi_target_tpg.h"
37 #include "iscsi_target_util.h"
38 #include "iscsi_target.h"
39 #include "iscsi_target_stat.h"
40 #include "iscsi_target_configfs.h"
41 
42 struct target_fabric_configfs *lio_target_fabric_configfs;
43 
44 struct lio_target_configfs_attribute {
45  struct configfs_attribute attr;
46  ssize_t (*show)(void *, char *);
47  ssize_t (*store)(void *, const char *, size_t);
48 };
49 
50 /* Start items for lio_target_portal_cit */
51 
52 static ssize_t lio_target_np_show_sctp(
53  struct se_tpg_np *se_tpg_np,
54  char *page)
55 {
56  struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
57  struct iscsi_tpg_np, se_tpg_np);
58  struct iscsi_tpg_np *tpg_np_sctp;
59  ssize_t rb;
60 
61  tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
62  if (tpg_np_sctp)
63  rb = sprintf(page, "1\n");
64  else
65  rb = sprintf(page, "0\n");
66 
67  return rb;
68 }
69 
70 static ssize_t lio_target_np_store_sctp(
71  struct se_tpg_np *se_tpg_np,
72  const char *page,
73  size_t count)
74 {
75  struct iscsi_np *np;
76  struct iscsi_portal_group *tpg;
77  struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
78  struct iscsi_tpg_np, se_tpg_np);
79  struct iscsi_tpg_np *tpg_np_sctp = NULL;
80  char *endptr;
81  u32 op;
82  int ret;
83 
84  op = simple_strtoul(page, &endptr, 0);
85  if ((op != 1) && (op != 0)) {
86  pr_err("Illegal value for tpg_enable: %u\n", op);
87  return -EINVAL;
88  }
89  np = tpg_np->tpg_np;
90  if (!np) {
91  pr_err("Unable to locate struct iscsi_np from"
92  " struct iscsi_tpg_np\n");
93  return -EINVAL;
94  }
95 
96  tpg = tpg_np->tpg;
97  if (iscsit_get_tpg(tpg) < 0)
98  return -EINVAL;
99 
100  if (op) {
101  /*
102  * Use existing np->np_sockaddr for SCTP network portal reference
103  */
104  tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
105  np->np_ip, tpg_np, ISCSI_SCTP_TCP);
106  if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
107  goto out;
108  } else {
109  tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
110  if (!tpg_np_sctp)
111  goto out;
112 
113  ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
114  if (ret < 0)
115  goto out;
116  }
117 
118  iscsit_put_tpg(tpg);
119  return count;
120 out:
121  iscsit_put_tpg(tpg);
122  return -EINVAL;
123 }
124 
125 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
126 
127 static struct configfs_attribute *lio_target_portal_attrs[] = {
128  &lio_target_np_sctp.attr,
129  NULL,
130 };
131 
132 /* Stop items for lio_target_portal_cit */
133 
134 /* Start items for lio_target_np_cit */
135 
136 #define MAX_PORTAL_LEN 256
137 
138 static struct se_tpg_np *lio_target_call_addnptotpg(
139  struct se_portal_group *se_tpg,
140  struct config_group *group,
141  const char *name)
142 {
143  struct iscsi_portal_group *tpg;
144  struct iscsi_tpg_np *tpg_np;
145  char *str, *str2, *ip_str, *port_str;
146  struct __kernel_sockaddr_storage sockaddr;
147  struct sockaddr_in *sock_in;
148  struct sockaddr_in6 *sock_in6;
149  unsigned long port;
150  int ret;
151  char buf[MAX_PORTAL_LEN + 1];
152 
153  if (strlen(name) > MAX_PORTAL_LEN) {
154  pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
155  (int)strlen(name), MAX_PORTAL_LEN);
156  return ERR_PTR(-EOVERFLOW);
157  }
158  memset(buf, 0, MAX_PORTAL_LEN + 1);
159  snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
160 
161  memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
162 
163  str = strstr(buf, "[");
164  if (str) {
165  const char *end;
166 
167  str2 = strstr(str, "]");
168  if (!str2) {
169  pr_err("Unable to locate trailing \"]\""
170  " in IPv6 iSCSI network portal address\n");
171  return ERR_PTR(-EINVAL);
172  }
173  str++; /* Skip over leading "[" */
174  *str2 = '\0'; /* Terminate the IPv6 address */
175  str2++; /* Skip over the "]" */
176  port_str = strstr(str2, ":");
177  if (!port_str) {
178  pr_err("Unable to locate \":port\""
179  " in IPv6 iSCSI network portal address\n");
180  return ERR_PTR(-EINVAL);
181  }
182  *port_str = '\0'; /* Terminate string for IP */
183  port_str++; /* Skip over ":" */
184 
185  ret = strict_strtoul(port_str, 0, &port);
186  if (ret < 0) {
187  pr_err("strict_strtoul() failed for port_str: %d\n", ret);
188  return ERR_PTR(ret);
189  }
190  sock_in6 = (struct sockaddr_in6 *)&sockaddr;
191  sock_in6->sin6_family = AF_INET6;
192  sock_in6->sin6_port = htons((unsigned short)port);
193  ret = in6_pton(str, IPV6_ADDRESS_SPACE,
194  (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
195  if (ret <= 0) {
196  pr_err("in6_pton returned: %d\n", ret);
197  return ERR_PTR(-EINVAL);
198  }
199  } else {
200  str = ip_str = &buf[0];
201  port_str = strstr(ip_str, ":");
202  if (!port_str) {
203  pr_err("Unable to locate \":port\""
204  " in IPv4 iSCSI network portal address\n");
205  return ERR_PTR(-EINVAL);
206  }
207  *port_str = '\0'; /* Terminate string for IP */
208  port_str++; /* Skip over ":" */
209 
210  ret = strict_strtoul(port_str, 0, &port);
211  if (ret < 0) {
212  pr_err("strict_strtoul() failed for port_str: %d\n", ret);
213  return ERR_PTR(ret);
214  }
215  sock_in = (struct sockaddr_in *)&sockaddr;
216  sock_in->sin_family = AF_INET;
217  sock_in->sin_port = htons((unsigned short)port);
218  sock_in->sin_addr.s_addr = in_aton(ip_str);
219  }
220  tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
221  ret = iscsit_get_tpg(tpg);
222  if (ret < 0)
223  return ERR_PTR(-EINVAL);
224 
225  pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
226  " PORTAL: %s\n",
227  config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
228  tpg->tpgt, name);
229  /*
230  * Assume ISCSI_TCP by default. Other network portals for other
231  * iSCSI fabrics:
232  *
233  * Traditional iSCSI over SCTP (initial support)
234  * iSER/TCP (TODO, hardware available)
235  * iSER/SCTP (TODO, software emulation with osc-iwarp)
236  * iSER/IB (TODO, hardware available)
237  *
238  * can be enabled with atributes under
239  * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
240  *
241  */
242  tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
243  ISCSI_TCP);
244  if (IS_ERR(tpg_np)) {
245  iscsit_put_tpg(tpg);
246  return ERR_CAST(tpg_np);
247  }
248  pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
249 
250  iscsit_put_tpg(tpg);
251  return &tpg_np->se_tpg_np;
252 }
253 
254 static void lio_target_call_delnpfromtpg(
255  struct se_tpg_np *se_tpg_np)
256 {
257  struct iscsi_portal_group *tpg;
258  struct iscsi_tpg_np *tpg_np;
259  struct se_portal_group *se_tpg;
260  int ret;
261 
262  tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
263  tpg = tpg_np->tpg;
264  ret = iscsit_get_tpg(tpg);
265  if (ret < 0)
266  return;
267 
268  se_tpg = &tpg->tpg_se_tpg;
269  pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
270  " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
271  tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
272 
273  ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
274  if (ret < 0)
275  goto out;
276 
277  pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
278 out:
279  iscsit_put_tpg(tpg);
280 }
281 
282 /* End items for lio_target_np_cit */
283 
284 /* Start items for lio_target_nacl_attrib_cit */
285 
286 #define DEF_NACL_ATTRIB(name) \
287 static ssize_t iscsi_nacl_attrib_show_##name( \
288  struct se_node_acl *se_nacl, \
289  char *page) \
290 { \
291  struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
292  se_node_acl); \
293  \
294  return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name); \
295 } \
296  \
297 static ssize_t iscsi_nacl_attrib_store_##name( \
298  struct se_node_acl *se_nacl, \
299  const char *page, \
300  size_t count) \
301 { \
302  struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
303  se_node_acl); \
304  char *endptr; \
305  u32 val; \
306  int ret; \
307  \
308  val = simple_strtoul(page, &endptr, 0); \
309  ret = iscsit_na_##name(nacl, val); \
310  if (ret < 0) \
311  return ret; \
312  \
313  return count; \
314 }
315 
316 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
317 /*
318  * Define iscsi_node_attrib_s_dataout_timeout
319  */
320 DEF_NACL_ATTRIB(dataout_timeout);
321 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
322 /*
323  * Define iscsi_node_attrib_s_dataout_timeout_retries
324  */
325 DEF_NACL_ATTRIB(dataout_timeout_retries);
326 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
327 /*
328  * Define iscsi_node_attrib_s_default_erl
329  */
330 DEF_NACL_ATTRIB(default_erl);
331 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
332 /*
333  * Define iscsi_node_attrib_s_nopin_timeout
334  */
335 DEF_NACL_ATTRIB(nopin_timeout);
336 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
337 /*
338  * Define iscsi_node_attrib_s_nopin_response_timeout
339  */
340 DEF_NACL_ATTRIB(nopin_response_timeout);
341 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
342 /*
343  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
344  */
345 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
346 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
347 /*
348  * Define iscsi_node_attrib_s_random_datain_seq_offsets
349  */
350 DEF_NACL_ATTRIB(random_datain_seq_offsets);
351 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
352 /*
353  * Define iscsi_node_attrib_s_random_r2t_offsets
354  */
355 DEF_NACL_ATTRIB(random_r2t_offsets);
356 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
357 
358 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
359  &iscsi_nacl_attrib_dataout_timeout.attr,
360  &iscsi_nacl_attrib_dataout_timeout_retries.attr,
361  &iscsi_nacl_attrib_default_erl.attr,
362  &iscsi_nacl_attrib_nopin_timeout.attr,
363  &iscsi_nacl_attrib_nopin_response_timeout.attr,
364  &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
365  &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
366  &iscsi_nacl_attrib_random_r2t_offsets.attr,
367  NULL,
368 };
369 
370 /* End items for lio_target_nacl_attrib_cit */
371 
372 /* Start items for lio_target_nacl_auth_cit */
373 
374 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \
375 static ssize_t __iscsi_##prefix##_show_##name( \
376  struct iscsi_node_acl *nacl, \
377  char *page) \
378 { \
379  struct iscsi_node_auth *auth = &nacl->node_auth; \
380  \
381  if (!capable(CAP_SYS_ADMIN)) \
382  return -EPERM; \
383  return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
384 } \
385  \
386 static ssize_t __iscsi_##prefix##_store_##name( \
387  struct iscsi_node_acl *nacl, \
388  const char *page, \
389  size_t count) \
390 { \
391  struct iscsi_node_auth *auth = &nacl->node_auth; \
392  \
393  if (!capable(CAP_SYS_ADMIN)) \
394  return -EPERM; \
395  \
396  snprintf(auth->name, PAGE_SIZE, "%s", page); \
397  if (!strncmp("NULL", auth->name, 4)) \
398  auth->naf_flags &= ~flags; \
399  else \
400  auth->naf_flags |= flags; \
401  \
402  if ((auth->naf_flags & NAF_USERID_IN_SET) && \
403  (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
404  auth->authenticate_target = 1; \
405  else \
406  auth->authenticate_target = 0; \
407  \
408  return count; \
409 }
410 
411 #define __DEF_NACL_AUTH_INT(prefix, name) \
412 static ssize_t __iscsi_##prefix##_show_##name( \
413  struct iscsi_node_acl *nacl, \
414  char *page) \
415 { \
416  struct iscsi_node_auth *auth = &nacl->node_auth; \
417  \
418  if (!capable(CAP_SYS_ADMIN)) \
419  return -EPERM; \
420  \
421  return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
422 }
423 
424 #define DEF_NACL_AUTH_STR(name, flags) \
425  __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
426 static ssize_t iscsi_nacl_auth_show_##name( \
427  struct se_node_acl *nacl, \
428  char *page) \
429 { \
430  return __iscsi_nacl_auth_show_##name(container_of(nacl, \
431  struct iscsi_node_acl, se_node_acl), page); \
432 } \
433 static ssize_t iscsi_nacl_auth_store_##name( \
434  struct se_node_acl *nacl, \
435  const char *page, \
436  size_t count) \
437 { \
438  return __iscsi_nacl_auth_store_##name(container_of(nacl, \
439  struct iscsi_node_acl, se_node_acl), page, count); \
440 }
441 
442 #define DEF_NACL_AUTH_INT(name) \
443  __DEF_NACL_AUTH_INT(nacl_auth, name) \
444 static ssize_t iscsi_nacl_auth_show_##name( \
445  struct se_node_acl *nacl, \
446  char *page) \
447 { \
448  return __iscsi_nacl_auth_show_##name(container_of(nacl, \
449  struct iscsi_node_acl, se_node_acl), page); \
450 }
451 
452 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
453 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
454 
455 /*
456  * One-way authentication userid
457  */
458 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
459 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
460 /*
461  * One-way authentication password
462  */
463 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
464 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
465 /*
466  * Enforce mutual authentication
467  */
468 DEF_NACL_AUTH_INT(authenticate_target);
469 AUTH_ATTR_RO(authenticate_target);
470 /*
471  * Mutual authentication userid
472  */
473 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
474 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
475 /*
476  * Mutual authentication password
477  */
478 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
479 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
480 
481 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
482  &iscsi_nacl_auth_userid.attr,
483  &iscsi_nacl_auth_password.attr,
484  &iscsi_nacl_auth_authenticate_target.attr,
485  &iscsi_nacl_auth_userid_mutual.attr,
486  &iscsi_nacl_auth_password_mutual.attr,
487  NULL,
488 };
489 
490 /* End items for lio_target_nacl_auth_cit */
491 
492 /* Start items for lio_target_nacl_param_cit */
493 
494 #define DEF_NACL_PARAM(name) \
495 static ssize_t iscsi_nacl_param_show_##name( \
496  struct se_node_acl *se_nacl, \
497  char *page) \
498 { \
499  struct iscsi_session *sess; \
500  struct se_session *se_sess; \
501  ssize_t rb; \
502  \
503  spin_lock_bh(&se_nacl->nacl_sess_lock); \
504  se_sess = se_nacl->nacl_sess; \
505  if (!se_sess) { \
506  rb = snprintf(page, PAGE_SIZE, \
507  "No Active iSCSI Session\n"); \
508  } else { \
509  sess = se_sess->fabric_sess_ptr; \
510  rb = snprintf(page, PAGE_SIZE, "%u\n", \
511  (u32)sess->sess_ops->name); \
512  } \
513  spin_unlock_bh(&se_nacl->nacl_sess_lock); \
514  \
515  return rb; \
516 }
517 
518 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
519 
520 DEF_NACL_PARAM(MaxConnections);
521 NACL_PARAM_ATTR(MaxConnections);
522 
523 DEF_NACL_PARAM(InitialR2T);
524 NACL_PARAM_ATTR(InitialR2T);
525 
526 DEF_NACL_PARAM(ImmediateData);
527 NACL_PARAM_ATTR(ImmediateData);
528 
529 DEF_NACL_PARAM(MaxBurstLength);
530 NACL_PARAM_ATTR(MaxBurstLength);
531 
532 DEF_NACL_PARAM(FirstBurstLength);
533 NACL_PARAM_ATTR(FirstBurstLength);
534 
535 DEF_NACL_PARAM(DefaultTime2Wait);
536 NACL_PARAM_ATTR(DefaultTime2Wait);
537 
538 DEF_NACL_PARAM(DefaultTime2Retain);
539 NACL_PARAM_ATTR(DefaultTime2Retain);
540 
541 DEF_NACL_PARAM(MaxOutstandingR2T);
542 NACL_PARAM_ATTR(MaxOutstandingR2T);
543 
544 DEF_NACL_PARAM(DataPDUInOrder);
545 NACL_PARAM_ATTR(DataPDUInOrder);
546 
547 DEF_NACL_PARAM(DataSequenceInOrder);
548 NACL_PARAM_ATTR(DataSequenceInOrder);
549 
550 DEF_NACL_PARAM(ErrorRecoveryLevel);
551 NACL_PARAM_ATTR(ErrorRecoveryLevel);
552 
553 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
554  &iscsi_nacl_param_MaxConnections.attr,
555  &iscsi_nacl_param_InitialR2T.attr,
556  &iscsi_nacl_param_ImmediateData.attr,
557  &iscsi_nacl_param_MaxBurstLength.attr,
558  &iscsi_nacl_param_FirstBurstLength.attr,
559  &iscsi_nacl_param_DefaultTime2Wait.attr,
560  &iscsi_nacl_param_DefaultTime2Retain.attr,
561  &iscsi_nacl_param_MaxOutstandingR2T.attr,
562  &iscsi_nacl_param_DataPDUInOrder.attr,
563  &iscsi_nacl_param_DataSequenceInOrder.attr,
564  &iscsi_nacl_param_ErrorRecoveryLevel.attr,
565  NULL,
566 };
567 
568 /* End items for lio_target_nacl_param_cit */
569 
570 /* Start items for lio_target_acl_cit */
571 
572 static ssize_t lio_target_nacl_show_info(
573  struct se_node_acl *se_nacl,
574  char *page)
575 {
576  struct iscsi_session *sess;
577  struct iscsi_conn *conn;
578  struct se_session *se_sess;
579  ssize_t rb = 0;
580 
581  spin_lock_bh(&se_nacl->nacl_sess_lock);
582  se_sess = se_nacl->nacl_sess;
583  if (!se_sess) {
584  rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
585  " Endpoint: %s\n", se_nacl->initiatorname);
586  } else {
587  sess = se_sess->fabric_sess_ptr;
588 
589  if (sess->sess_ops->InitiatorName)
590  rb += sprintf(page+rb, "InitiatorName: %s\n",
591  sess->sess_ops->InitiatorName);
592  if (sess->sess_ops->InitiatorAlias)
593  rb += sprintf(page+rb, "InitiatorAlias: %s\n",
594  sess->sess_ops->InitiatorAlias);
595 
596  rb += sprintf(page+rb, "LIO Session ID: %u "
597  "ISID: 0x%02x %02x %02x %02x %02x %02x "
598  "TSIH: %hu ", sess->sid,
599  sess->isid[0], sess->isid[1], sess->isid[2],
600  sess->isid[3], sess->isid[4], sess->isid[5],
601  sess->tsih);
602  rb += sprintf(page+rb, "SessionType: %s\n",
603  (sess->sess_ops->SessionType) ?
604  "Discovery" : "Normal");
605  rb += sprintf(page+rb, "Session State: ");
606  switch (sess->session_state) {
607  case TARG_SESS_STATE_FREE:
608  rb += sprintf(page+rb, "TARG_SESS_FREE\n");
609  break;
610  case TARG_SESS_STATE_ACTIVE:
611  rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
612  break;
613  case TARG_SESS_STATE_LOGGED_IN:
614  rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
615  break;
616  case TARG_SESS_STATE_FAILED:
617  rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
618  break;
619  case TARG_SESS_STATE_IN_CONTINUE:
620  rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
621  break;
622  default:
623  rb += sprintf(page+rb, "ERROR: Unknown Session"
624  " State!\n");
625  break;
626  }
627 
628  rb += sprintf(page+rb, "---------------------[iSCSI Session"
629  " Values]-----------------------\n");
630  rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
631  " : MaxCmdSN : ITT : TTT\n");
632  rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
633  " 0x%08x 0x%08x\n",
634  sess->cmdsn_window,
635  (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
636  sess->exp_cmd_sn, sess->max_cmd_sn,
637  sess->init_task_tag, sess->targ_xfer_tag);
638  rb += sprintf(page+rb, "----------------------[iSCSI"
639  " Connections]-------------------------\n");
640 
641  spin_lock(&sess->conn_lock);
642  list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
643  rb += sprintf(page+rb, "CID: %hu Connection"
644  " State: ", conn->cid);
645  switch (conn->conn_state) {
646  case TARG_CONN_STATE_FREE:
647  rb += sprintf(page+rb,
648  "TARG_CONN_STATE_FREE\n");
649  break;
650  case TARG_CONN_STATE_XPT_UP:
651  rb += sprintf(page+rb,
652  "TARG_CONN_STATE_XPT_UP\n");
653  break;
654  case TARG_CONN_STATE_IN_LOGIN:
655  rb += sprintf(page+rb,
656  "TARG_CONN_STATE_IN_LOGIN\n");
657  break;
658  case TARG_CONN_STATE_LOGGED_IN:
659  rb += sprintf(page+rb,
660  "TARG_CONN_STATE_LOGGED_IN\n");
661  break;
662  case TARG_CONN_STATE_IN_LOGOUT:
663  rb += sprintf(page+rb,
664  "TARG_CONN_STATE_IN_LOGOUT\n");
665  break;
666  case TARG_CONN_STATE_LOGOUT_REQUESTED:
667  rb += sprintf(page+rb,
668  "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
669  break;
670  case TARG_CONN_STATE_CLEANUP_WAIT:
671  rb += sprintf(page+rb,
672  "TARG_CONN_STATE_CLEANUP_WAIT\n");
673  break;
674  default:
675  rb += sprintf(page+rb,
676  "ERROR: Unknown Connection State!\n");
677  break;
678  }
679 
680  rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
681  (conn->network_transport == ISCSI_TCP) ?
682  "TCP" : "SCTP");
683  rb += sprintf(page+rb, " StatSN: 0x%08x\n",
684  conn->stat_sn);
685  }
686  spin_unlock(&sess->conn_lock);
687  }
688  spin_unlock_bh(&se_nacl->nacl_sess_lock);
689 
690  return rb;
691 }
692 
693 TF_NACL_BASE_ATTR_RO(lio_target, info);
694 
695 static ssize_t lio_target_nacl_show_cmdsn_depth(
696  struct se_node_acl *se_nacl,
697  char *page)
698 {
699  return sprintf(page, "%u\n", se_nacl->queue_depth);
700 }
701 
702 static ssize_t lio_target_nacl_store_cmdsn_depth(
703  struct se_node_acl *se_nacl,
704  const char *page,
705  size_t count)
706 {
707  struct se_portal_group *se_tpg = se_nacl->se_tpg;
708  struct iscsi_portal_group *tpg = container_of(se_tpg,
709  struct iscsi_portal_group, tpg_se_tpg);
710  struct config_item *acl_ci, *tpg_ci, *wwn_ci;
711  char *endptr;
712  u32 cmdsn_depth = 0;
713  int ret;
714 
715  cmdsn_depth = simple_strtoul(page, &endptr, 0);
716  if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
717  pr_err("Passed cmdsn_depth: %u exceeds"
718  " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
719  TA_DEFAULT_CMDSN_DEPTH_MAX);
720  return -EINVAL;
721  }
722  acl_ci = &se_nacl->acl_group.cg_item;
723  if (!acl_ci) {
724  pr_err("Unable to locatel acl_ci\n");
725  return -EINVAL;
726  }
727  tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
728  if (!tpg_ci) {
729  pr_err("Unable to locate tpg_ci\n");
730  return -EINVAL;
731  }
732  wwn_ci = &tpg_ci->ci_group->cg_item;
733  if (!wwn_ci) {
734  pr_err("Unable to locate config_item wwn_ci\n");
735  return -EINVAL;
736  }
737 
738  if (iscsit_get_tpg(tpg) < 0)
739  return -EINVAL;
740  /*
741  * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
742  */
743  ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
744  config_item_name(acl_ci), cmdsn_depth, 1);
745 
746  pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
747  "InitiatorName: %s\n", config_item_name(wwn_ci),
748  config_item_name(tpg_ci), cmdsn_depth,
749  config_item_name(acl_ci));
750 
751  iscsit_put_tpg(tpg);
752  return (!ret) ? count : (ssize_t)ret;
753 }
754 
755 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
756 
757 static struct configfs_attribute *lio_target_initiator_attrs[] = {
758  &lio_target_nacl_info.attr,
759  &lio_target_nacl_cmdsn_depth.attr,
760  NULL,
761 };
762 
763 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
764  struct se_portal_group *se_tpg)
765 {
766  struct iscsi_node_acl *acl;
767 
768  acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
769  if (!acl) {
770  pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
771  return NULL;
772  }
773 
774  return &acl->se_node_acl;
775 }
776 
777 static struct se_node_acl *lio_target_make_nodeacl(
778  struct se_portal_group *se_tpg,
779  struct config_group *group,
780  const char *name)
781 {
782  struct config_group *stats_cg;
783  struct iscsi_node_acl *acl;
784  struct se_node_acl *se_nacl_new, *se_nacl;
785  struct iscsi_portal_group *tpg = container_of(se_tpg,
786  struct iscsi_portal_group, tpg_se_tpg);
787  u32 cmdsn_depth;
788 
789  se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
790  if (!se_nacl_new)
791  return ERR_PTR(-ENOMEM);
792 
793  cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
794  /*
795  * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
796  * when converting a NdoeACL from demo mode -> explict
797  */
798  se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
799  name, cmdsn_depth);
800  if (IS_ERR(se_nacl))
801  return se_nacl;
802 
803  acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
804  stats_cg = &se_nacl->acl_fabric_stat_group;
805 
806  stats_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
807  GFP_KERNEL);
808  if (!stats_cg->default_groups) {
809  pr_err("Unable to allocate memory for"
810  " stats_cg->default_groups\n");
811  core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
812  kfree(acl);
813  return ERR_PTR(-ENOMEM);
814  }
815 
816  stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
817  stats_cg->default_groups[1] = NULL;
818  config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
819  "iscsi_sess_stats", &iscsi_stat_sess_cit);
820 
821  return se_nacl;
822 }
823 
824 static void lio_target_drop_nodeacl(
825  struct se_node_acl *se_nacl)
826 {
827  struct se_portal_group *se_tpg = se_nacl->se_tpg;
828  struct iscsi_node_acl *acl = container_of(se_nacl,
829  struct iscsi_node_acl, se_node_acl);
830  struct config_item *df_item;
831  struct config_group *stats_cg;
832  int i;
833 
834  stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
835  for (i = 0; stats_cg->default_groups[i]; i++) {
836  df_item = &stats_cg->default_groups[i]->cg_item;
837  stats_cg->default_groups[i] = NULL;
838  config_item_put(df_item);
839  }
840  kfree(stats_cg->default_groups);
841 
842  core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
843  kfree(acl);
844 }
845 
846 /* End items for lio_target_acl_cit */
847 
848 /* Start items for lio_target_tpg_attrib_cit */
849 
850 #define DEF_TPG_ATTRIB(name) \
851  \
852 static ssize_t iscsi_tpg_attrib_show_##name( \
853  struct se_portal_group *se_tpg, \
854  char *page) \
855 { \
856  struct iscsi_portal_group *tpg = container_of(se_tpg, \
857  struct iscsi_portal_group, tpg_se_tpg); \
858  ssize_t rb; \
859  \
860  if (iscsit_get_tpg(tpg) < 0) \
861  return -EINVAL; \
862  \
863  rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name); \
864  iscsit_put_tpg(tpg); \
865  return rb; \
866 } \
867  \
868 static ssize_t iscsi_tpg_attrib_store_##name( \
869  struct se_portal_group *se_tpg, \
870  const char *page, \
871  size_t count) \
872 { \
873  struct iscsi_portal_group *tpg = container_of(se_tpg, \
874  struct iscsi_portal_group, tpg_se_tpg); \
875  char *endptr; \
876  u32 val; \
877  int ret; \
878  \
879  if (iscsit_get_tpg(tpg) < 0) \
880  return -EINVAL; \
881  \
882  val = simple_strtoul(page, &endptr, 0); \
883  ret = iscsit_ta_##name(tpg, val); \
884  if (ret < 0) \
885  goto out; \
886  \
887  iscsit_put_tpg(tpg); \
888  return count; \
889 out: \
890  iscsit_put_tpg(tpg); \
891  return ret; \
892 }
893 
894 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
895 
896 /*
897  * Define iscsi_tpg_attrib_s_authentication
898  */
899 DEF_TPG_ATTRIB(authentication);
900 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
901 /*
902  * Define iscsi_tpg_attrib_s_login_timeout
903  */
904 DEF_TPG_ATTRIB(login_timeout);
905 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
906 /*
907  * Define iscsi_tpg_attrib_s_netif_timeout
908  */
909 DEF_TPG_ATTRIB(netif_timeout);
910 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
911 /*
912  * Define iscsi_tpg_attrib_s_generate_node_acls
913  */
914 DEF_TPG_ATTRIB(generate_node_acls);
915 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
916 /*
917  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
918  */
919 DEF_TPG_ATTRIB(default_cmdsn_depth);
920 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
921 /*
922  Define iscsi_tpg_attrib_s_cache_dynamic_acls
923  */
924 DEF_TPG_ATTRIB(cache_dynamic_acls);
925 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
926 /*
927  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
928  */
929 DEF_TPG_ATTRIB(demo_mode_write_protect);
930 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
931 /*
932  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
933  */
934 DEF_TPG_ATTRIB(prod_mode_write_protect);
935 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
936 
937 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
938  &iscsi_tpg_attrib_authentication.attr,
939  &iscsi_tpg_attrib_login_timeout.attr,
940  &iscsi_tpg_attrib_netif_timeout.attr,
941  &iscsi_tpg_attrib_generate_node_acls.attr,
942  &iscsi_tpg_attrib_default_cmdsn_depth.attr,
943  &iscsi_tpg_attrib_cache_dynamic_acls.attr,
944  &iscsi_tpg_attrib_demo_mode_write_protect.attr,
945  &iscsi_tpg_attrib_prod_mode_write_protect.attr,
946  NULL,
947 };
948 
949 /* End items for lio_target_tpg_attrib_cit */
950 
951 /* Start items for lio_target_tpg_param_cit */
952 
953 #define DEF_TPG_PARAM(name) \
954 static ssize_t iscsi_tpg_param_show_##name( \
955  struct se_portal_group *se_tpg, \
956  char *page) \
957 { \
958  struct iscsi_portal_group *tpg = container_of(se_tpg, \
959  struct iscsi_portal_group, tpg_se_tpg); \
960  struct iscsi_param *param; \
961  ssize_t rb; \
962  \
963  if (iscsit_get_tpg(tpg) < 0) \
964  return -EINVAL; \
965  \
966  param = iscsi_find_param_from_key(__stringify(name), \
967  tpg->param_list); \
968  if (!param) { \
969  iscsit_put_tpg(tpg); \
970  return -EINVAL; \
971  } \
972  rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
973  \
974  iscsit_put_tpg(tpg); \
975  return rb; \
976 } \
977 static ssize_t iscsi_tpg_param_store_##name( \
978  struct se_portal_group *se_tpg, \
979  const char *page, \
980  size_t count) \
981 { \
982  struct iscsi_portal_group *tpg = container_of(se_tpg, \
983  struct iscsi_portal_group, tpg_se_tpg); \
984  char *buf; \
985  int ret; \
986  \
987  buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
988  if (!buf) \
989  return -ENOMEM; \
990  snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
991  buf[strlen(buf)-1] = '\0'; /* Kill newline */ \
992  \
993  if (iscsit_get_tpg(tpg) < 0) { \
994  kfree(buf); \
995  return -EINVAL; \
996  } \
997  \
998  ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
999  if (ret < 0) \
1000  goto out; \
1001  \
1002  kfree(buf); \
1003  iscsit_put_tpg(tpg); \
1004  return count; \
1005 out: \
1006  kfree(buf); \
1007  iscsit_put_tpg(tpg); \
1008  return -EINVAL; \
1009 }
1010 
1011 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1012 
1013 DEF_TPG_PARAM(AuthMethod);
1014 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1015 
1016 DEF_TPG_PARAM(HeaderDigest);
1017 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1018 
1019 DEF_TPG_PARAM(DataDigest);
1020 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1021 
1022 DEF_TPG_PARAM(MaxConnections);
1023 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1024 
1025 DEF_TPG_PARAM(TargetAlias);
1026 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1027 
1028 DEF_TPG_PARAM(InitialR2T);
1029 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1030 
1031 DEF_TPG_PARAM(ImmediateData);
1032 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1033 
1034 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1035 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1036 
1037 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1038 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1039 
1040 DEF_TPG_PARAM(MaxBurstLength);
1041 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1042 
1043 DEF_TPG_PARAM(FirstBurstLength);
1044 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1045 
1046 DEF_TPG_PARAM(DefaultTime2Wait);
1047 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1048 
1049 DEF_TPG_PARAM(DefaultTime2Retain);
1050 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1051 
1052 DEF_TPG_PARAM(MaxOutstandingR2T);
1053 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1054 
1055 DEF_TPG_PARAM(DataPDUInOrder);
1056 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1057 
1058 DEF_TPG_PARAM(DataSequenceInOrder);
1059 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1060 
1061 DEF_TPG_PARAM(ErrorRecoveryLevel);
1062 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1063 
1064 DEF_TPG_PARAM(IFMarker);
1065 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1066 
1067 DEF_TPG_PARAM(OFMarker);
1068 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1069 
1070 DEF_TPG_PARAM(IFMarkInt);
1071 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1072 
1073 DEF_TPG_PARAM(OFMarkInt);
1074 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1075 
1076 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1077  &iscsi_tpg_param_AuthMethod.attr,
1078  &iscsi_tpg_param_HeaderDigest.attr,
1079  &iscsi_tpg_param_DataDigest.attr,
1080  &iscsi_tpg_param_MaxConnections.attr,
1081  &iscsi_tpg_param_TargetAlias.attr,
1082  &iscsi_tpg_param_InitialR2T.attr,
1083  &iscsi_tpg_param_ImmediateData.attr,
1084  &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1085  &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1086  &iscsi_tpg_param_MaxBurstLength.attr,
1087  &iscsi_tpg_param_FirstBurstLength.attr,
1088  &iscsi_tpg_param_DefaultTime2Wait.attr,
1089  &iscsi_tpg_param_DefaultTime2Retain.attr,
1090  &iscsi_tpg_param_MaxOutstandingR2T.attr,
1091  &iscsi_tpg_param_DataPDUInOrder.attr,
1092  &iscsi_tpg_param_DataSequenceInOrder.attr,
1093  &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1094  &iscsi_tpg_param_IFMarker.attr,
1095  &iscsi_tpg_param_OFMarker.attr,
1096  &iscsi_tpg_param_IFMarkInt.attr,
1097  &iscsi_tpg_param_OFMarkInt.attr,
1098  NULL,
1099 };
1100 
1101 /* End items for lio_target_tpg_param_cit */
1102 
1103 /* Start items for lio_target_tpg_cit */
1104 
1105 static ssize_t lio_target_tpg_show_enable(
1106  struct se_portal_group *se_tpg,
1107  char *page)
1108 {
1109  struct iscsi_portal_group *tpg = container_of(se_tpg,
1110  struct iscsi_portal_group, tpg_se_tpg);
1111  ssize_t len;
1112 
1113  spin_lock(&tpg->tpg_state_lock);
1114  len = sprintf(page, "%d\n",
1115  (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1116  spin_unlock(&tpg->tpg_state_lock);
1117 
1118  return len;
1119 }
1120 
1121 static ssize_t lio_target_tpg_store_enable(
1122  struct se_portal_group *se_tpg,
1123  const char *page,
1124  size_t count)
1125 {
1126  struct iscsi_portal_group *tpg = container_of(se_tpg,
1127  struct iscsi_portal_group, tpg_se_tpg);
1128  char *endptr;
1129  u32 op;
1130  int ret = 0;
1131 
1132  op = simple_strtoul(page, &endptr, 0);
1133  if ((op != 1) && (op != 0)) {
1134  pr_err("Illegal value for tpg_enable: %u\n", op);
1135  return -EINVAL;
1136  }
1137 
1138  ret = iscsit_get_tpg(tpg);
1139  if (ret < 0)
1140  return -EINVAL;
1141 
1142  if (op) {
1143  ret = iscsit_tpg_enable_portal_group(tpg);
1144  if (ret < 0)
1145  goto out;
1146  } else {
1147  /*
1148  * iscsit_tpg_disable_portal_group() assumes force=1
1149  */
1150  ret = iscsit_tpg_disable_portal_group(tpg, 1);
1151  if (ret < 0)
1152  goto out;
1153  }
1154 
1155  iscsit_put_tpg(tpg);
1156  return count;
1157 out:
1158  iscsit_put_tpg(tpg);
1159  return -EINVAL;
1160 }
1161 
1162 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1163 
1164 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1165  &lio_target_tpg_enable.attr,
1166  NULL,
1167 };
1168 
1169 /* End items for lio_target_tpg_cit */
1170 
1171 /* Start items for lio_target_tiqn_cit */
1172 
1173 static struct se_portal_group *lio_target_tiqn_addtpg(
1174  struct se_wwn *wwn,
1175  struct config_group *group,
1176  const char *name)
1177 {
1178  struct iscsi_portal_group *tpg;
1179  struct iscsi_tiqn *tiqn;
1180  char *tpgt_str, *end_ptr;
1181  int ret = 0;
1182  unsigned short int tpgt;
1183 
1184  tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1185  /*
1186  * Only tpgt_# directory groups can be created below
1187  * target/iscsi/iqn.superturodiskarry/
1188  */
1189  tpgt_str = strstr(name, "tpgt_");
1190  if (!tpgt_str) {
1191  pr_err("Unable to locate \"tpgt_#\" directory"
1192  " group\n");
1193  return NULL;
1194  }
1195  tpgt_str += 5; /* Skip ahead of "tpgt_" */
1196  tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1197 
1198  tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1199  if (!tpg)
1200  return NULL;
1201 
1202  ret = core_tpg_register(
1203  &lio_target_fabric_configfs->tf_ops,
1204  wwn, &tpg->tpg_se_tpg, tpg,
1205  TRANSPORT_TPG_TYPE_NORMAL);
1206  if (ret < 0)
1207  return NULL;
1208 
1209  ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1210  if (ret != 0)
1211  goto out;
1212 
1213  pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1214  pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1215  name);
1216  return &tpg->tpg_se_tpg;
1217 out:
1218  core_tpg_deregister(&tpg->tpg_se_tpg);
1219  kfree(tpg);
1220  return NULL;
1221 }
1222 
1223 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1224 {
1225  struct iscsi_portal_group *tpg;
1226  struct iscsi_tiqn *tiqn;
1227 
1228  tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1229  tiqn = tpg->tpg_tiqn;
1230  /*
1231  * iscsit_tpg_del_portal_group() assumes force=1
1232  */
1233  pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1234  iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1235 }
1236 
1237 /* End items for lio_target_tiqn_cit */
1238 
1239 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1240 
1241 static ssize_t lio_target_wwn_show_attr_lio_version(
1242  struct target_fabric_configfs *tf,
1243  char *page)
1244 {
1245  return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1246 }
1247 
1248 TF_WWN_ATTR_RO(lio_target, lio_version);
1249 
1250 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1251  &lio_target_wwn_lio_version.attr,
1252  NULL,
1253 };
1254 
1255 static struct se_wwn *lio_target_call_coreaddtiqn(
1256  struct target_fabric_configfs *tf,
1257  struct config_group *group,
1258  const char *name)
1259 {
1260  struct config_group *stats_cg;
1261  struct iscsi_tiqn *tiqn;
1262 
1263  tiqn = iscsit_add_tiqn((unsigned char *)name);
1264  if (IS_ERR(tiqn))
1265  return ERR_CAST(tiqn);
1266  /*
1267  * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1268  */
1269  stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1270 
1271  stats_cg->default_groups = kzalloc(sizeof(struct config_group) * 6,
1272  GFP_KERNEL);
1273  if (!stats_cg->default_groups) {
1274  pr_err("Unable to allocate memory for"
1275  " stats_cg->default_groups\n");
1276  iscsit_del_tiqn(tiqn);
1277  return ERR_PTR(-ENOMEM);
1278  }
1279 
1280  stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1281  stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1282  stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1283  stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1284  stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1285  stats_cg->default_groups[5] = NULL;
1286  config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1287  "iscsi_instance", &iscsi_stat_instance_cit);
1288  config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1289  "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1290  config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1291  "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1292  config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1293  "iscsi_login_stats", &iscsi_stat_login_cit);
1294  config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1295  "iscsi_logout_stats", &iscsi_stat_logout_cit);
1296 
1297  pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1298  pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1299  " %s\n", name);
1300  return &tiqn->tiqn_wwn;
1301 }
1302 
1303 static void lio_target_call_coredeltiqn(
1304  struct se_wwn *wwn)
1305 {
1306  struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1307  struct config_item *df_item;
1308  struct config_group *stats_cg;
1309  int i;
1310 
1311  stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1312  for (i = 0; stats_cg->default_groups[i]; i++) {
1313  df_item = &stats_cg->default_groups[i]->cg_item;
1314  stats_cg->default_groups[i] = NULL;
1315  config_item_put(df_item);
1316  }
1317  kfree(stats_cg->default_groups);
1318 
1319  pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1320  tiqn->tiqn);
1321  iscsit_del_tiqn(tiqn);
1322 }
1323 
1324 /* End LIO-Target TIQN struct contig_lio_target_cit */
1325 
1326 /* Start lio_target_discovery_auth_cit */
1327 
1328 #define DEF_DISC_AUTH_STR(name, flags) \
1329  __DEF_NACL_AUTH_STR(disc, name, flags) \
1330 static ssize_t iscsi_disc_show_##name( \
1331  struct target_fabric_configfs *tf, \
1332  char *page) \
1333 { \
1334  return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1335  page); \
1336 } \
1337 static ssize_t iscsi_disc_store_##name( \
1338  struct target_fabric_configfs *tf, \
1339  const char *page, \
1340  size_t count) \
1341 { \
1342  return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1343  page, count); \
1344 }
1345 
1346 #define DEF_DISC_AUTH_INT(name) \
1347  __DEF_NACL_AUTH_INT(disc, name) \
1348 static ssize_t iscsi_disc_show_##name( \
1349  struct target_fabric_configfs *tf, \
1350  char *page) \
1351 { \
1352  return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1353  page); \
1354 }
1355 
1356 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1357 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1358 
1359 /*
1360  * One-way authentication userid
1361  */
1362 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1363 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1364 /*
1365  * One-way authentication password
1366  */
1367 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1368 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1369 /*
1370  * Enforce mutual authentication
1371  */
1372 DEF_DISC_AUTH_INT(authenticate_target);
1373 DISC_AUTH_ATTR_RO(authenticate_target);
1374 /*
1375  * Mutual authentication userid
1376  */
1377 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1378 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1379 /*
1380  * Mutual authentication password
1381  */
1382 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1383 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1384 
1385 /*
1386  * enforce_discovery_auth
1387  */
1388 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1389  struct target_fabric_configfs *tf,
1390  char *page)
1391 {
1392  struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1393 
1394  return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1395 }
1396 
1397 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1398  struct target_fabric_configfs *tf,
1399  const char *page,
1400  size_t count)
1401 {
1402  struct iscsi_param *param;
1403  struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1404  char *endptr;
1405  u32 op;
1406 
1407  op = simple_strtoul(page, &endptr, 0);
1408  if ((op != 1) && (op != 0)) {
1409  pr_err("Illegal value for enforce_discovery_auth:"
1410  " %u\n", op);
1411  return -EINVAL;
1412  }
1413 
1414  if (!discovery_tpg) {
1415  pr_err("iscsit_global->discovery_tpg is NULL\n");
1416  return -EINVAL;
1417  }
1418 
1419  param = iscsi_find_param_from_key(AUTHMETHOD,
1420  discovery_tpg->param_list);
1421  if (!param)
1422  return -EINVAL;
1423 
1424  if (op) {
1425  /*
1426  * Reset the AuthMethod key to CHAP.
1427  */
1428  if (iscsi_update_param_value(param, CHAP) < 0)
1429  return -EINVAL;
1430 
1431  discovery_tpg->tpg_attrib.authentication = 1;
1432  iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1433  pr_debug("LIO-CORE[0] Successfully enabled"
1434  " authentication enforcement for iSCSI"
1435  " Discovery TPG\n");
1436  } else {
1437  /*
1438  * Reset the AuthMethod key to CHAP,None
1439  */
1440  if (iscsi_update_param_value(param, "CHAP,None") < 0)
1441  return -EINVAL;
1442 
1443  discovery_tpg->tpg_attrib.authentication = 0;
1444  iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1445  pr_debug("LIO-CORE[0] Successfully disabled"
1446  " authentication enforcement for iSCSI"
1447  " Discovery TPG\n");
1448  }
1449 
1450  return count;
1451 }
1452 
1453 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1454 
1455 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1456  &iscsi_disc_userid.attr,
1457  &iscsi_disc_password.attr,
1458  &iscsi_disc_authenticate_target.attr,
1459  &iscsi_disc_userid_mutual.attr,
1460  &iscsi_disc_password_mutual.attr,
1461  &iscsi_disc_enforce_discovery_auth.attr,
1462  NULL,
1463 };
1464 
1465 /* End lio_target_discovery_auth_cit */
1466 
1467 /* Start functions for target_core_fabric_ops */
1468 
1469 static char *iscsi_get_fabric_name(void)
1470 {
1471  return "iSCSI";
1472 }
1473 
1474 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1475 {
1476  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1477 
1478  /* only used for printks or comparism with ->ref_task_tag */
1479  return (__force u32)cmd->init_task_tag;
1480 }
1481 
1482 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1483 {
1484  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1485 
1486  return cmd->i_state;
1487 }
1488 
1489 static u32 lio_sess_get_index(struct se_session *se_sess)
1490 {
1491  struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1492 
1493  return sess->session_index;
1494 }
1495 
1496 static u32 lio_sess_get_initiator_sid(
1497  struct se_session *se_sess,
1498  unsigned char *buf,
1499  u32 size)
1500 {
1501  struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1502  /*
1503  * iSCSI Initiator Session Identifier from RFC-3720.
1504  */
1505  return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1506  sess->isid[0], sess->isid[1], sess->isid[2],
1507  sess->isid[3], sess->isid[4], sess->isid[5]);
1508 }
1509 
1510 static int lio_queue_data_in(struct se_cmd *se_cmd)
1511 {
1512  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1513 
1514  cmd->i_state = ISTATE_SEND_DATAIN;
1515  iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1516  return 0;
1517 }
1518 
1519 static int lio_write_pending(struct se_cmd *se_cmd)
1520 {
1521  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1522 
1523  if (!cmd->immediate_data && !cmd->unsolicited_data)
1524  return iscsit_build_r2ts_for_cmd(cmd, cmd->conn, false);
1525 
1526  return 0;
1527 }
1528 
1529 static int lio_write_pending_status(struct se_cmd *se_cmd)
1530 {
1531  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1532  int ret;
1533 
1534  spin_lock_bh(&cmd->istate_lock);
1535  ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1536  spin_unlock_bh(&cmd->istate_lock);
1537 
1538  return ret;
1539 }
1540 
1541 static int lio_queue_status(struct se_cmd *se_cmd)
1542 {
1543  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1544 
1545  cmd->i_state = ISTATE_SEND_STATUS;
1546  iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1547  return 0;
1548 }
1549 
1550 static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1551 {
1552  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1553 
1554  cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1555  iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1556  return 0;
1557 }
1558 
1559 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1560 {
1561  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1562 
1563  return &tpg->tpg_tiqn->tiqn[0];
1564 }
1565 
1566 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1567 {
1568  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1569 
1570  return tpg->tpgt;
1571 }
1572 
1573 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1574 {
1575  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1576 
1577  return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1578 }
1579 
1580 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1581 {
1582  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1583 
1584  return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1585 }
1586 
1587 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1588 {
1589  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1590 
1591  return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1592 }
1593 
1594 static int lio_tpg_check_demo_mode_write_protect(
1595  struct se_portal_group *se_tpg)
1596 {
1597  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1598 
1599  return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1600 }
1601 
1602 static int lio_tpg_check_prod_mode_write_protect(
1603  struct se_portal_group *se_tpg)
1604 {
1605  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1606 
1607  return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1608 }
1609 
1610 static void lio_tpg_release_fabric_acl(
1611  struct se_portal_group *se_tpg,
1612  struct se_node_acl *se_acl)
1613 {
1614  struct iscsi_node_acl *acl = container_of(se_acl,
1615  struct iscsi_node_acl, se_node_acl);
1616  kfree(acl);
1617 }
1618 
1619 /*
1620  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1621  *
1622  * Also, this function calls iscsit_inc_session_usage_count() on the
1623  * struct iscsi_session in question.
1624  */
1625 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1626 {
1627  struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1628 
1629  spin_lock(&sess->conn_lock);
1630  if (atomic_read(&sess->session_fall_back_to_erl0) ||
1631  atomic_read(&sess->session_logout) ||
1632  (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1633  spin_unlock(&sess->conn_lock);
1634  return 0;
1635  }
1636  atomic_set(&sess->session_reinstatement, 1);
1637  spin_unlock(&sess->conn_lock);
1638 
1639  iscsit_stop_time2retain_timer(sess);
1640  iscsit_stop_session(sess, 1, 1);
1641 
1642  return 1;
1643 }
1644 
1645 /*
1646  * Calls iscsit_dec_session_usage_count() as inverse of
1647  * lio_tpg_shutdown_session()
1648  */
1649 static void lio_tpg_close_session(struct se_session *se_sess)
1650 {
1651  struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1652  /*
1653  * If the iSCSI Session for the iSCSI Initiator Node exists,
1654  * forcefully shutdown the iSCSI NEXUS.
1655  */
1656  iscsit_close_session(sess);
1657 }
1658 
1659 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1660 {
1661  struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1662 
1663  return tpg->tpg_tiqn->tiqn_index;
1664 }
1665 
1666 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1667 {
1668  struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1669  se_node_acl);
1670 
1671  ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1672  iscsit_set_default_node_attribues(acl);
1673 }
1674 
1675 static void lio_release_cmd(struct se_cmd *se_cmd)
1676 {
1677  struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1678 
1679  iscsit_release_cmd(cmd);
1680 }
1681 
1682 /* End functions for target_core_fabric_ops */
1683 
1684 int iscsi_target_register_configfs(void)
1685 {
1686  struct target_fabric_configfs *fabric;
1687  int ret;
1688 
1689  lio_target_fabric_configfs = NULL;
1690  fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1691  if (IS_ERR(fabric)) {
1692  pr_err("target_fabric_configfs_init() for"
1693  " LIO-Target failed!\n");
1694  return PTR_ERR(fabric);
1695  }
1696  /*
1697  * Setup the fabric API of function pointers used by target_core_mod..
1698  */
1699  fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1700  fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1701  fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1702  fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1703  fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1704  fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1705  fabric->tf_ops.tpg_get_pr_transport_id_len =
1706  &iscsi_get_pr_transport_id_len;
1707  fabric->tf_ops.tpg_parse_pr_out_transport_id =
1708  &iscsi_parse_pr_out_transport_id;
1709  fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1710  fabric->tf_ops.tpg_check_demo_mode_cache =
1711  &lio_tpg_check_demo_mode_cache;
1712  fabric->tf_ops.tpg_check_demo_mode_write_protect =
1713  &lio_tpg_check_demo_mode_write_protect;
1714  fabric->tf_ops.tpg_check_prod_mode_write_protect =
1715  &lio_tpg_check_prod_mode_write_protect;
1716  fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1717  fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1718  fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1719  fabric->tf_ops.release_cmd = &lio_release_cmd;
1720  fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1721  fabric->tf_ops.close_session = &lio_tpg_close_session;
1722  fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1723  fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1724  fabric->tf_ops.write_pending = &lio_write_pending;
1725  fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1726  fabric->tf_ops.set_default_node_attributes =
1727  &lio_set_default_node_attributes;
1728  fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1729  fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1730  fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1731  fabric->tf_ops.queue_status = &lio_queue_status;
1732  fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1733  /*
1734  * Setup function pointers for generic logic in target_core_fabric_configfs.c
1735  */
1736  fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1737  fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1738  fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1739  fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1740  fabric->tf_ops.fabric_post_link = NULL;
1741  fabric->tf_ops.fabric_pre_unlink = NULL;
1742  fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1743  fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1744  fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1745  fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1746  /*
1747  * Setup default attribute lists for various fabric->tf_cit_tmpl
1748  * sturct config_item_type's
1749  */
1750  TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1751  TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1752  TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1753  TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
1754  TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1755  TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1756  TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1757  TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1758  TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1759  TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
1760 
1761  ret = target_fabric_configfs_register(fabric);
1762  if (ret < 0) {
1763  pr_err("target_fabric_configfs_register() for"
1764  " LIO-Target failed!\n");
1765  target_fabric_configfs_free(fabric);
1766  return ret;
1767  }
1768 
1769  lio_target_fabric_configfs = fabric;
1770  pr_debug("LIO_TARGET[0] - Set fabric ->"
1771  " lio_target_fabric_configfs\n");
1772  return 0;
1773 }
1774 
1775 
1776 void iscsi_target_deregister_configfs(void)
1777 {
1778  if (!lio_target_fabric_configfs)
1779  return;
1780  /*
1781  * Shutdown discovery sessions and disable discovery TPG
1782  */
1783  if (iscsit_global->discovery_tpg)
1784  iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
1785 
1786  target_fabric_configfs_deregister(lio_target_fabric_configfs);
1787  lio_target_fabric_configfs = NULL;
1788  pr_debug("LIO_TARGET[0] - Cleared"
1789  " lio_target_fabric_configfs\n");
1790 }
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