1 /*******************************************************************************
2 * This file contains the configfs implementation for iSCSI Target mode
3 * from the LIO-Target Project.
5 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
7 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
9 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
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.
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 ****************************************************************************/
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 #include <target/iscsi/iscsi_transport.h>
32 #include "iscsi_target_core.h"
33 #include "iscsi_target_parameters.h"
34 #include "iscsi_target_device.h"
35 #include "iscsi_target_erl0.h"
36 #include "iscsi_target_nodeattrib.h"
37 #include "iscsi_target_tpg.h"
38 #include "iscsi_target_util.h"
39 #include "iscsi_target.h"
40 #include "iscsi_target_stat.h"
41 #include "iscsi_target_configfs.h"
43 struct target_fabric_configfs *lio_target_fabric_configfs;
45 struct lio_target_configfs_attribute {
46 struct configfs_attribute attr;
47 ssize_t (*show)(void *, char *);
48 ssize_t (*store)(void *, const char *, size_t);
51 /* Start items for lio_target_portal_cit */
53 static ssize_t lio_target_np_show_sctp(
54 struct se_tpg_np *se_tpg_np,
57 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
58 struct iscsi_tpg_np, se_tpg_np);
59 struct iscsi_tpg_np *tpg_np_sctp;
62 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
64 rb = sprintf(page, "1\n");
66 rb = sprintf(page, "0\n");
71 static ssize_t lio_target_np_store_sctp(
72 struct se_tpg_np *se_tpg_np,
77 struct iscsi_portal_group *tpg;
78 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
79 struct iscsi_tpg_np, se_tpg_np);
80 struct iscsi_tpg_np *tpg_np_sctp = NULL;
85 op = simple_strtoul(page, &endptr, 0);
86 if ((op != 1) && (op != 0)) {
87 pr_err("Illegal value for tpg_enable: %u\n", op);
92 pr_err("Unable to locate struct iscsi_np from"
93 " struct iscsi_tpg_np\n");
98 if (iscsit_get_tpg(tpg) < 0)
103 * Use existing np->np_sockaddr for SCTP network portal reference
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))
110 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
114 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
126 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
128 static ssize_t lio_target_np_show_iser(
129 struct se_tpg_np *se_tpg_np,
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;
137 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
139 rb = sprintf(page, "1\n");
141 rb = sprintf(page, "0\n");
146 static ssize_t lio_target_np_store_iser(
147 struct se_tpg_np *se_tpg_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;
160 op = simple_strtoul(page, &endptr, 0);
161 if ((op != 1) && (op != 0)) {
162 pr_err("Illegal value for tpg_enable: %u\n", op);
167 pr_err("Unable to locate struct iscsi_np from"
168 " struct iscsi_tpg_np\n");
173 if (iscsit_get_tpg(tpg) < 0)
177 int rc = request_module("ib_isert");
179 pr_warn("Unable to request_module for ib_isert\n");
181 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
182 np->np_ip, tpg_np, ISCSI_INFINIBAND);
183 if (!tpg_np_iser || IS_ERR(tpg_np_iser))
186 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
190 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
195 printk("lio_target_np_store_iser() done, op: %d\n", op);
204 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
206 static struct configfs_attribute *lio_target_portal_attrs[] = {
207 &lio_target_np_sctp.attr,
208 &lio_target_np_iser.attr,
212 /* Stop items for lio_target_portal_cit */
214 /* Start items for lio_target_np_cit */
216 #define MAX_PORTAL_LEN 256
218 static struct se_tpg_np *lio_target_call_addnptotpg(
219 struct se_portal_group *se_tpg,
220 struct config_group *group,
223 struct iscsi_portal_group *tpg;
224 struct iscsi_tpg_np *tpg_np;
225 char *str, *str2, *ip_str, *port_str;
226 struct __kernel_sockaddr_storage sockaddr;
227 struct sockaddr_in *sock_in;
228 struct sockaddr_in6 *sock_in6;
231 char buf[MAX_PORTAL_LEN + 1];
233 if (strlen(name) > MAX_PORTAL_LEN) {
234 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
235 (int)strlen(name), MAX_PORTAL_LEN);
236 return ERR_PTR(-EOVERFLOW);
238 memset(buf, 0, MAX_PORTAL_LEN + 1);
239 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
241 memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
243 str = strstr(buf, "[");
247 str2 = strstr(str, "]");
249 pr_err("Unable to locate trailing \"]\""
250 " in IPv6 iSCSI network portal address\n");
251 return ERR_PTR(-EINVAL);
253 str++; /* Skip over leading "[" */
254 *str2 = '\0'; /* Terminate the IPv6 address */
255 str2++; /* Skip over the "]" */
256 port_str = strstr(str2, ":");
258 pr_err("Unable to locate \":port\""
259 " in IPv6 iSCSI network portal address\n");
260 return ERR_PTR(-EINVAL);
262 *port_str = '\0'; /* Terminate string for IP */
263 port_str++; /* Skip over ":" */
265 ret = strict_strtoul(port_str, 0, &port);
267 pr_err("strict_strtoul() failed for port_str: %d\n", ret);
270 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
271 sock_in6->sin6_family = AF_INET6;
272 sock_in6->sin6_port = htons((unsigned short)port);
273 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
274 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
276 pr_err("in6_pton returned: %d\n", ret);
277 return ERR_PTR(-EINVAL);
280 str = ip_str = &buf[0];
281 port_str = strstr(ip_str, ":");
283 pr_err("Unable to locate \":port\""
284 " in IPv4 iSCSI network portal address\n");
285 return ERR_PTR(-EINVAL);
287 *port_str = '\0'; /* Terminate string for IP */
288 port_str++; /* Skip over ":" */
290 ret = strict_strtoul(port_str, 0, &port);
292 pr_err("strict_strtoul() failed for port_str: %d\n", ret);
295 sock_in = (struct sockaddr_in *)&sockaddr;
296 sock_in->sin_family = AF_INET;
297 sock_in->sin_port = htons((unsigned short)port);
298 sock_in->sin_addr.s_addr = in_aton(ip_str);
300 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
301 ret = iscsit_get_tpg(tpg);
303 return ERR_PTR(-EINVAL);
305 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
307 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
310 * Assume ISCSI_TCP by default. Other network portals for other
313 * Traditional iSCSI over SCTP (initial support)
314 * iSER/TCP (TODO, hardware available)
315 * iSER/SCTP (TODO, software emulation with osc-iwarp)
316 * iSER/IB (TODO, hardware available)
318 * can be enabled with attributes under
319 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
322 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
324 if (IS_ERR(tpg_np)) {
326 return ERR_CAST(tpg_np);
328 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
331 return &tpg_np->se_tpg_np;
334 static void lio_target_call_delnpfromtpg(
335 struct se_tpg_np *se_tpg_np)
337 struct iscsi_portal_group *tpg;
338 struct iscsi_tpg_np *tpg_np;
339 struct se_portal_group *se_tpg;
342 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
344 ret = iscsit_get_tpg(tpg);
348 se_tpg = &tpg->tpg_se_tpg;
349 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
350 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
351 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
353 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
357 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
362 /* End items for lio_target_np_cit */
364 /* Start items for lio_target_nacl_attrib_cit */
366 #define DEF_NACL_ATTRIB(name) \
367 static ssize_t iscsi_nacl_attrib_show_##name( \
368 struct se_node_acl *se_nacl, \
371 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
374 return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name); \
377 static ssize_t iscsi_nacl_attrib_store_##name( \
378 struct se_node_acl *se_nacl, \
382 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
388 val = simple_strtoul(page, &endptr, 0); \
389 ret = iscsit_na_##name(nacl, val); \
396 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
398 * Define iscsi_node_attrib_s_dataout_timeout
400 DEF_NACL_ATTRIB(dataout_timeout);
401 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
403 * Define iscsi_node_attrib_s_dataout_timeout_retries
405 DEF_NACL_ATTRIB(dataout_timeout_retries);
406 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
408 * Define iscsi_node_attrib_s_default_erl
410 DEF_NACL_ATTRIB(default_erl);
411 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
413 * Define iscsi_node_attrib_s_nopin_timeout
415 DEF_NACL_ATTRIB(nopin_timeout);
416 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
418 * Define iscsi_node_attrib_s_nopin_response_timeout
420 DEF_NACL_ATTRIB(nopin_response_timeout);
421 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
423 * Define iscsi_node_attrib_s_random_datain_pdu_offsets
425 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
426 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
428 * Define iscsi_node_attrib_s_random_datain_seq_offsets
430 DEF_NACL_ATTRIB(random_datain_seq_offsets);
431 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
433 * Define iscsi_node_attrib_s_random_r2t_offsets
435 DEF_NACL_ATTRIB(random_r2t_offsets);
436 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
438 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
439 &iscsi_nacl_attrib_dataout_timeout.attr,
440 &iscsi_nacl_attrib_dataout_timeout_retries.attr,
441 &iscsi_nacl_attrib_default_erl.attr,
442 &iscsi_nacl_attrib_nopin_timeout.attr,
443 &iscsi_nacl_attrib_nopin_response_timeout.attr,
444 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
445 &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
446 &iscsi_nacl_attrib_random_r2t_offsets.attr,
450 /* End items for lio_target_nacl_attrib_cit */
452 /* Start items for lio_target_nacl_auth_cit */
454 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \
455 static ssize_t __iscsi_##prefix##_show_##name( \
456 struct iscsi_node_acl *nacl, \
459 struct iscsi_node_auth *auth = &nacl->node_auth; \
461 if (!capable(CAP_SYS_ADMIN)) \
463 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
466 static ssize_t __iscsi_##prefix##_store_##name( \
467 struct iscsi_node_acl *nacl, \
471 struct iscsi_node_auth *auth = &nacl->node_auth; \
473 if (!capable(CAP_SYS_ADMIN)) \
476 snprintf(auth->name, sizeof(auth->name), "%s", page); \
477 if (!strncmp("NULL", auth->name, 4)) \
478 auth->naf_flags &= ~flags; \
480 auth->naf_flags |= flags; \
482 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
483 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
484 auth->authenticate_target = 1; \
486 auth->authenticate_target = 0; \
491 #define __DEF_NACL_AUTH_INT(prefix, name) \
492 static ssize_t __iscsi_##prefix##_show_##name( \
493 struct iscsi_node_acl *nacl, \
496 struct iscsi_node_auth *auth = &nacl->node_auth; \
498 if (!capable(CAP_SYS_ADMIN)) \
501 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
504 #define DEF_NACL_AUTH_STR(name, flags) \
505 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
506 static ssize_t iscsi_nacl_auth_show_##name( \
507 struct se_node_acl *nacl, \
510 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
511 struct iscsi_node_acl, se_node_acl), page); \
513 static ssize_t iscsi_nacl_auth_store_##name( \
514 struct se_node_acl *nacl, \
518 return __iscsi_nacl_auth_store_##name(container_of(nacl, \
519 struct iscsi_node_acl, se_node_acl), page, count); \
522 #define DEF_NACL_AUTH_INT(name) \
523 __DEF_NACL_AUTH_INT(nacl_auth, name) \
524 static ssize_t iscsi_nacl_auth_show_##name( \
525 struct se_node_acl *nacl, \
528 return __iscsi_nacl_auth_show_##name(container_of(nacl, \
529 struct iscsi_node_acl, se_node_acl), page); \
532 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
533 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
536 * One-way authentication userid
538 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
539 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
541 * One-way authentication password
543 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
544 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
546 * Enforce mutual authentication
548 DEF_NACL_AUTH_INT(authenticate_target);
549 AUTH_ATTR_RO(authenticate_target);
551 * Mutual authentication userid
553 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
554 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
556 * Mutual authentication password
558 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
559 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
561 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
562 &iscsi_nacl_auth_userid.attr,
563 &iscsi_nacl_auth_password.attr,
564 &iscsi_nacl_auth_authenticate_target.attr,
565 &iscsi_nacl_auth_userid_mutual.attr,
566 &iscsi_nacl_auth_password_mutual.attr,
570 /* End items for lio_target_nacl_auth_cit */
572 /* Start items for lio_target_nacl_param_cit */
574 #define DEF_NACL_PARAM(name) \
575 static ssize_t iscsi_nacl_param_show_##name( \
576 struct se_node_acl *se_nacl, \
579 struct iscsi_session *sess; \
580 struct se_session *se_sess; \
583 spin_lock_bh(&se_nacl->nacl_sess_lock); \
584 se_sess = se_nacl->nacl_sess; \
586 rb = snprintf(page, PAGE_SIZE, \
587 "No Active iSCSI Session\n"); \
589 sess = se_sess->fabric_sess_ptr; \
590 rb = snprintf(page, PAGE_SIZE, "%u\n", \
591 (u32)sess->sess_ops->name); \
593 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
598 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
600 DEF_NACL_PARAM(MaxConnections);
601 NACL_PARAM_ATTR(MaxConnections);
603 DEF_NACL_PARAM(InitialR2T);
604 NACL_PARAM_ATTR(InitialR2T);
606 DEF_NACL_PARAM(ImmediateData);
607 NACL_PARAM_ATTR(ImmediateData);
609 DEF_NACL_PARAM(MaxBurstLength);
610 NACL_PARAM_ATTR(MaxBurstLength);
612 DEF_NACL_PARAM(FirstBurstLength);
613 NACL_PARAM_ATTR(FirstBurstLength);
615 DEF_NACL_PARAM(DefaultTime2Wait);
616 NACL_PARAM_ATTR(DefaultTime2Wait);
618 DEF_NACL_PARAM(DefaultTime2Retain);
619 NACL_PARAM_ATTR(DefaultTime2Retain);
621 DEF_NACL_PARAM(MaxOutstandingR2T);
622 NACL_PARAM_ATTR(MaxOutstandingR2T);
624 DEF_NACL_PARAM(DataPDUInOrder);
625 NACL_PARAM_ATTR(DataPDUInOrder);
627 DEF_NACL_PARAM(DataSequenceInOrder);
628 NACL_PARAM_ATTR(DataSequenceInOrder);
630 DEF_NACL_PARAM(ErrorRecoveryLevel);
631 NACL_PARAM_ATTR(ErrorRecoveryLevel);
633 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
634 &iscsi_nacl_param_MaxConnections.attr,
635 &iscsi_nacl_param_InitialR2T.attr,
636 &iscsi_nacl_param_ImmediateData.attr,
637 &iscsi_nacl_param_MaxBurstLength.attr,
638 &iscsi_nacl_param_FirstBurstLength.attr,
639 &iscsi_nacl_param_DefaultTime2Wait.attr,
640 &iscsi_nacl_param_DefaultTime2Retain.attr,
641 &iscsi_nacl_param_MaxOutstandingR2T.attr,
642 &iscsi_nacl_param_DataPDUInOrder.attr,
643 &iscsi_nacl_param_DataSequenceInOrder.attr,
644 &iscsi_nacl_param_ErrorRecoveryLevel.attr,
648 /* End items for lio_target_nacl_param_cit */
650 /* Start items for lio_target_acl_cit */
652 static ssize_t lio_target_nacl_show_info(
653 struct se_node_acl *se_nacl,
656 struct iscsi_session *sess;
657 struct iscsi_conn *conn;
658 struct se_session *se_sess;
661 spin_lock_bh(&se_nacl->nacl_sess_lock);
662 se_sess = se_nacl->nacl_sess;
664 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
665 " Endpoint: %s\n", se_nacl->initiatorname);
667 sess = se_sess->fabric_sess_ptr;
669 if (sess->sess_ops->InitiatorName)
670 rb += sprintf(page+rb, "InitiatorName: %s\n",
671 sess->sess_ops->InitiatorName);
672 if (sess->sess_ops->InitiatorAlias)
673 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
674 sess->sess_ops->InitiatorAlias);
676 rb += sprintf(page+rb, "LIO Session ID: %u "
677 "ISID: 0x%02x %02x %02x %02x %02x %02x "
678 "TSIH: %hu ", sess->sid,
679 sess->isid[0], sess->isid[1], sess->isid[2],
680 sess->isid[3], sess->isid[4], sess->isid[5],
682 rb += sprintf(page+rb, "SessionType: %s\n",
683 (sess->sess_ops->SessionType) ?
684 "Discovery" : "Normal");
685 rb += sprintf(page+rb, "Session State: ");
686 switch (sess->session_state) {
687 case TARG_SESS_STATE_FREE:
688 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
690 case TARG_SESS_STATE_ACTIVE:
691 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
693 case TARG_SESS_STATE_LOGGED_IN:
694 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
696 case TARG_SESS_STATE_FAILED:
697 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
699 case TARG_SESS_STATE_IN_CONTINUE:
700 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
703 rb += sprintf(page+rb, "ERROR: Unknown Session"
708 rb += sprintf(page+rb, "---------------------[iSCSI Session"
709 " Values]-----------------------\n");
710 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
711 " : MaxCmdSN : ITT : TTT\n");
712 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
715 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
716 sess->exp_cmd_sn, sess->max_cmd_sn,
717 sess->init_task_tag, sess->targ_xfer_tag);
718 rb += sprintf(page+rb, "----------------------[iSCSI"
719 " Connections]-------------------------\n");
721 spin_lock(&sess->conn_lock);
722 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
723 rb += sprintf(page+rb, "CID: %hu Connection"
724 " State: ", conn->cid);
725 switch (conn->conn_state) {
726 case TARG_CONN_STATE_FREE:
727 rb += sprintf(page+rb,
728 "TARG_CONN_STATE_FREE\n");
730 case TARG_CONN_STATE_XPT_UP:
731 rb += sprintf(page+rb,
732 "TARG_CONN_STATE_XPT_UP\n");
734 case TARG_CONN_STATE_IN_LOGIN:
735 rb += sprintf(page+rb,
736 "TARG_CONN_STATE_IN_LOGIN\n");
738 case TARG_CONN_STATE_LOGGED_IN:
739 rb += sprintf(page+rb,
740 "TARG_CONN_STATE_LOGGED_IN\n");
742 case TARG_CONN_STATE_IN_LOGOUT:
743 rb += sprintf(page+rb,
744 "TARG_CONN_STATE_IN_LOGOUT\n");
746 case TARG_CONN_STATE_LOGOUT_REQUESTED:
747 rb += sprintf(page+rb,
748 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
750 case TARG_CONN_STATE_CLEANUP_WAIT:
751 rb += sprintf(page+rb,
752 "TARG_CONN_STATE_CLEANUP_WAIT\n");
755 rb += sprintf(page+rb,
756 "ERROR: Unknown Connection State!\n");
760 rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
761 (conn->network_transport == ISCSI_TCP) ?
763 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
766 spin_unlock(&sess->conn_lock);
768 spin_unlock_bh(&se_nacl->nacl_sess_lock);
773 TF_NACL_BASE_ATTR_RO(lio_target, info);
775 static ssize_t lio_target_nacl_show_cmdsn_depth(
776 struct se_node_acl *se_nacl,
779 return sprintf(page, "%u\n", se_nacl->queue_depth);
782 static ssize_t lio_target_nacl_store_cmdsn_depth(
783 struct se_node_acl *se_nacl,
787 struct se_portal_group *se_tpg = se_nacl->se_tpg;
788 struct iscsi_portal_group *tpg = container_of(se_tpg,
789 struct iscsi_portal_group, tpg_se_tpg);
790 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
795 cmdsn_depth = simple_strtoul(page, &endptr, 0);
796 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
797 pr_err("Passed cmdsn_depth: %u exceeds"
798 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
799 TA_DEFAULT_CMDSN_DEPTH_MAX);
802 acl_ci = &se_nacl->acl_group.cg_item;
804 pr_err("Unable to locatel acl_ci\n");
807 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
809 pr_err("Unable to locate tpg_ci\n");
812 wwn_ci = &tpg_ci->ci_group->cg_item;
814 pr_err("Unable to locate config_item wwn_ci\n");
818 if (iscsit_get_tpg(tpg) < 0)
821 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
823 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
824 config_item_name(acl_ci), cmdsn_depth, 1);
826 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
827 "InitiatorName: %s\n", config_item_name(wwn_ci),
828 config_item_name(tpg_ci), cmdsn_depth,
829 config_item_name(acl_ci));
832 return (!ret) ? count : (ssize_t)ret;
835 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
837 static ssize_t lio_target_nacl_show_tag(
838 struct se_node_acl *se_nacl,
841 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
844 static ssize_t lio_target_nacl_store_tag(
845 struct se_node_acl *se_nacl,
851 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
858 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
860 static struct configfs_attribute *lio_target_initiator_attrs[] = {
861 &lio_target_nacl_info.attr,
862 &lio_target_nacl_cmdsn_depth.attr,
863 &lio_target_nacl_tag.attr,
867 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
868 struct se_portal_group *se_tpg)
870 struct iscsi_node_acl *acl;
872 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
874 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
878 return &acl->se_node_acl;
881 static struct se_node_acl *lio_target_make_nodeacl(
882 struct se_portal_group *se_tpg,
883 struct config_group *group,
886 struct config_group *stats_cg;
887 struct iscsi_node_acl *acl;
888 struct se_node_acl *se_nacl_new, *se_nacl;
889 struct iscsi_portal_group *tpg = container_of(se_tpg,
890 struct iscsi_portal_group, tpg_se_tpg);
893 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
895 return ERR_PTR(-ENOMEM);
897 cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
899 * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
900 * when converting a NdoeACL from demo mode -> explict
902 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
907 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
908 stats_cg = &se_nacl->acl_fabric_stat_group;
910 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
912 if (!stats_cg->default_groups) {
913 pr_err("Unable to allocate memory for"
914 " stats_cg->default_groups\n");
915 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
917 return ERR_PTR(-ENOMEM);
920 stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
921 stats_cg->default_groups[1] = NULL;
922 config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
923 "iscsi_sess_stats", &iscsi_stat_sess_cit);
928 static void lio_target_drop_nodeacl(
929 struct se_node_acl *se_nacl)
931 struct se_portal_group *se_tpg = se_nacl->se_tpg;
932 struct iscsi_node_acl *acl = container_of(se_nacl,
933 struct iscsi_node_acl, se_node_acl);
934 struct config_item *df_item;
935 struct config_group *stats_cg;
938 stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
939 for (i = 0; stats_cg->default_groups[i]; i++) {
940 df_item = &stats_cg->default_groups[i]->cg_item;
941 stats_cg->default_groups[i] = NULL;
942 config_item_put(df_item);
944 kfree(stats_cg->default_groups);
946 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
950 /* End items for lio_target_acl_cit */
952 /* Start items for lio_target_tpg_attrib_cit */
954 #define DEF_TPG_ATTRIB(name) \
956 static ssize_t iscsi_tpg_attrib_show_##name( \
957 struct se_portal_group *se_tpg, \
960 struct iscsi_portal_group *tpg = container_of(se_tpg, \
961 struct iscsi_portal_group, tpg_se_tpg); \
964 if (iscsit_get_tpg(tpg) < 0) \
967 rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name); \
968 iscsit_put_tpg(tpg); \
972 static ssize_t iscsi_tpg_attrib_store_##name( \
973 struct se_portal_group *se_tpg, \
977 struct iscsi_portal_group *tpg = container_of(se_tpg, \
978 struct iscsi_portal_group, tpg_se_tpg); \
983 if (iscsit_get_tpg(tpg) < 0) \
986 val = simple_strtoul(page, &endptr, 0); \
987 ret = iscsit_ta_##name(tpg, val); \
991 iscsit_put_tpg(tpg); \
994 iscsit_put_tpg(tpg); \
998 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1001 * Define iscsi_tpg_attrib_s_authentication
1003 DEF_TPG_ATTRIB(authentication);
1004 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1006 * Define iscsi_tpg_attrib_s_login_timeout
1008 DEF_TPG_ATTRIB(login_timeout);
1009 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1011 * Define iscsi_tpg_attrib_s_netif_timeout
1013 DEF_TPG_ATTRIB(netif_timeout);
1014 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1016 * Define iscsi_tpg_attrib_s_generate_node_acls
1018 DEF_TPG_ATTRIB(generate_node_acls);
1019 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1021 * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1023 DEF_TPG_ATTRIB(default_cmdsn_depth);
1024 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1026 Define iscsi_tpg_attrib_s_cache_dynamic_acls
1028 DEF_TPG_ATTRIB(cache_dynamic_acls);
1029 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1031 * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1033 DEF_TPG_ATTRIB(demo_mode_write_protect);
1034 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1036 * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1038 DEF_TPG_ATTRIB(prod_mode_write_protect);
1039 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1041 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1042 &iscsi_tpg_attrib_authentication.attr,
1043 &iscsi_tpg_attrib_login_timeout.attr,
1044 &iscsi_tpg_attrib_netif_timeout.attr,
1045 &iscsi_tpg_attrib_generate_node_acls.attr,
1046 &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1047 &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1048 &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1049 &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1053 /* End items for lio_target_tpg_attrib_cit */
1055 /* Start items for lio_target_tpg_auth_cit */
1057 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
1058 static ssize_t __iscsi_##prefix##_show_##name( \
1059 struct se_portal_group *se_tpg, \
1062 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1063 struct iscsi_portal_group, tpg_se_tpg); \
1064 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1066 if (!capable(CAP_SYS_ADMIN)) \
1069 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
1072 static ssize_t __iscsi_##prefix##_store_##name( \
1073 struct se_portal_group *se_tpg, \
1077 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1078 struct iscsi_portal_group, tpg_se_tpg); \
1079 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1081 if (!capable(CAP_SYS_ADMIN)) \
1084 snprintf(auth->name, sizeof(auth->name), "%s", page); \
1085 if (!(strncmp("NULL", auth->name, 4))) \
1086 auth->naf_flags &= ~flags; \
1088 auth->naf_flags |= flags; \
1090 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
1091 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
1092 auth->authenticate_target = 1; \
1094 auth->authenticate_target = 0; \
1099 #define __DEF_TPG_AUTH_INT(prefix, name) \
1100 static ssize_t __iscsi_##prefix##_show_##name( \
1101 struct se_portal_group *se_tpg, \
1104 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1105 struct iscsi_portal_group, tpg_se_tpg); \
1106 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
1108 if (!capable(CAP_SYS_ADMIN)) \
1111 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
1114 #define DEF_TPG_AUTH_STR(name, flags) \
1115 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
1116 static ssize_t iscsi_tpg_auth_show_##name( \
1117 struct se_portal_group *se_tpg, \
1120 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1123 static ssize_t iscsi_tpg_auth_store_##name( \
1124 struct se_portal_group *se_tpg, \
1128 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \
1131 #define DEF_TPG_AUTH_INT(name) \
1132 __DEF_TPG_AUTH_INT(tpg_auth, name) \
1133 static ssize_t iscsi_tpg_auth_show_##name( \
1134 struct se_portal_group *se_tpg, \
1137 return __iscsi_tpg_auth_show_##name(se_tpg, page); \
1140 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1141 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1144 * * One-way authentication userid
1146 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1147 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1149 * * One-way authentication password
1151 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1152 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1154 * * Enforce mutual authentication
1156 DEF_TPG_AUTH_INT(authenticate_target);
1157 TPG_AUTH_ATTR_RO(authenticate_target);
1159 * * Mutual authentication userid
1161 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1162 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1164 * * Mutual authentication password
1166 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1167 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1169 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1170 &iscsi_tpg_auth_userid.attr,
1171 &iscsi_tpg_auth_password.attr,
1172 &iscsi_tpg_auth_authenticate_target.attr,
1173 &iscsi_tpg_auth_userid_mutual.attr,
1174 &iscsi_tpg_auth_password_mutual.attr,
1178 /* End items for lio_target_tpg_auth_cit */
1180 /* Start items for lio_target_tpg_param_cit */
1182 #define DEF_TPG_PARAM(name) \
1183 static ssize_t iscsi_tpg_param_show_##name( \
1184 struct se_portal_group *se_tpg, \
1187 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1188 struct iscsi_portal_group, tpg_se_tpg); \
1189 struct iscsi_param *param; \
1192 if (iscsit_get_tpg(tpg) < 0) \
1195 param = iscsi_find_param_from_key(__stringify(name), \
1198 iscsit_put_tpg(tpg); \
1201 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
1203 iscsit_put_tpg(tpg); \
1206 static ssize_t iscsi_tpg_param_store_##name( \
1207 struct se_portal_group *se_tpg, \
1211 struct iscsi_portal_group *tpg = container_of(se_tpg, \
1212 struct iscsi_portal_group, tpg_se_tpg); \
1216 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
1219 snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
1220 buf[strlen(buf)-1] = '\0'; /* Kill newline */ \
1222 if (iscsit_get_tpg(tpg) < 0) { \
1227 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
1232 iscsit_put_tpg(tpg); \
1236 iscsit_put_tpg(tpg); \
1240 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1242 DEF_TPG_PARAM(AuthMethod);
1243 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1245 DEF_TPG_PARAM(HeaderDigest);
1246 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1248 DEF_TPG_PARAM(DataDigest);
1249 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1251 DEF_TPG_PARAM(MaxConnections);
1252 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1254 DEF_TPG_PARAM(TargetAlias);
1255 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1257 DEF_TPG_PARAM(InitialR2T);
1258 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1260 DEF_TPG_PARAM(ImmediateData);
1261 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1263 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1264 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1266 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1267 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1269 DEF_TPG_PARAM(MaxBurstLength);
1270 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1272 DEF_TPG_PARAM(FirstBurstLength);
1273 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1275 DEF_TPG_PARAM(DefaultTime2Wait);
1276 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1278 DEF_TPG_PARAM(DefaultTime2Retain);
1279 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1281 DEF_TPG_PARAM(MaxOutstandingR2T);
1282 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1284 DEF_TPG_PARAM(DataPDUInOrder);
1285 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1287 DEF_TPG_PARAM(DataSequenceInOrder);
1288 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1290 DEF_TPG_PARAM(ErrorRecoveryLevel);
1291 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1293 DEF_TPG_PARAM(IFMarker);
1294 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1296 DEF_TPG_PARAM(OFMarker);
1297 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1299 DEF_TPG_PARAM(IFMarkInt);
1300 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1302 DEF_TPG_PARAM(OFMarkInt);
1303 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1305 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1306 &iscsi_tpg_param_AuthMethod.attr,
1307 &iscsi_tpg_param_HeaderDigest.attr,
1308 &iscsi_tpg_param_DataDigest.attr,
1309 &iscsi_tpg_param_MaxConnections.attr,
1310 &iscsi_tpg_param_TargetAlias.attr,
1311 &iscsi_tpg_param_InitialR2T.attr,
1312 &iscsi_tpg_param_ImmediateData.attr,
1313 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1314 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1315 &iscsi_tpg_param_MaxBurstLength.attr,
1316 &iscsi_tpg_param_FirstBurstLength.attr,
1317 &iscsi_tpg_param_DefaultTime2Wait.attr,
1318 &iscsi_tpg_param_DefaultTime2Retain.attr,
1319 &iscsi_tpg_param_MaxOutstandingR2T.attr,
1320 &iscsi_tpg_param_DataPDUInOrder.attr,
1321 &iscsi_tpg_param_DataSequenceInOrder.attr,
1322 &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1323 &iscsi_tpg_param_IFMarker.attr,
1324 &iscsi_tpg_param_OFMarker.attr,
1325 &iscsi_tpg_param_IFMarkInt.attr,
1326 &iscsi_tpg_param_OFMarkInt.attr,
1330 /* End items for lio_target_tpg_param_cit */
1332 /* Start items for lio_target_tpg_cit */
1334 static ssize_t lio_target_tpg_show_enable(
1335 struct se_portal_group *se_tpg,
1338 struct iscsi_portal_group *tpg = container_of(se_tpg,
1339 struct iscsi_portal_group, tpg_se_tpg);
1342 spin_lock(&tpg->tpg_state_lock);
1343 len = sprintf(page, "%d\n",
1344 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1345 spin_unlock(&tpg->tpg_state_lock);
1350 static ssize_t lio_target_tpg_store_enable(
1351 struct se_portal_group *se_tpg,
1355 struct iscsi_portal_group *tpg = container_of(se_tpg,
1356 struct iscsi_portal_group, tpg_se_tpg);
1361 op = simple_strtoul(page, &endptr, 0);
1362 if ((op != 1) && (op != 0)) {
1363 pr_err("Illegal value for tpg_enable: %u\n", op);
1367 ret = iscsit_get_tpg(tpg);
1372 ret = iscsit_tpg_enable_portal_group(tpg);
1377 * iscsit_tpg_disable_portal_group() assumes force=1
1379 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1384 iscsit_put_tpg(tpg);
1387 iscsit_put_tpg(tpg);
1391 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1393 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1394 &lio_target_tpg_enable.attr,
1398 /* End items for lio_target_tpg_cit */
1400 /* Start items for lio_target_tiqn_cit */
1402 static struct se_portal_group *lio_target_tiqn_addtpg(
1404 struct config_group *group,
1407 struct iscsi_portal_group *tpg;
1408 struct iscsi_tiqn *tiqn;
1409 char *tpgt_str, *end_ptr;
1411 unsigned short int tpgt;
1413 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1415 * Only tpgt_# directory groups can be created below
1416 * target/iscsi/iqn.superturodiskarry/
1418 tpgt_str = strstr(name, "tpgt_");
1420 pr_err("Unable to locate \"tpgt_#\" directory"
1424 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1425 tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1427 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1431 ret = core_tpg_register(
1432 &lio_target_fabric_configfs->tf_ops,
1433 wwn, &tpg->tpg_se_tpg, tpg,
1434 TRANSPORT_TPG_TYPE_NORMAL);
1438 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1442 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1443 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1445 return &tpg->tpg_se_tpg;
1447 core_tpg_deregister(&tpg->tpg_se_tpg);
1452 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1454 struct iscsi_portal_group *tpg;
1455 struct iscsi_tiqn *tiqn;
1457 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1458 tiqn = tpg->tpg_tiqn;
1460 * iscsit_tpg_del_portal_group() assumes force=1
1462 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1463 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1466 /* End items for lio_target_tiqn_cit */
1468 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1470 static ssize_t lio_target_wwn_show_attr_lio_version(
1471 struct target_fabric_configfs *tf,
1474 return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1477 TF_WWN_ATTR_RO(lio_target, lio_version);
1479 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1480 &lio_target_wwn_lio_version.attr,
1484 static struct se_wwn *lio_target_call_coreaddtiqn(
1485 struct target_fabric_configfs *tf,
1486 struct config_group *group,
1489 struct config_group *stats_cg;
1490 struct iscsi_tiqn *tiqn;
1492 tiqn = iscsit_add_tiqn((unsigned char *)name);
1494 return ERR_CAST(tiqn);
1496 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1498 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1500 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1502 if (!stats_cg->default_groups) {
1503 pr_err("Unable to allocate memory for"
1504 " stats_cg->default_groups\n");
1505 iscsit_del_tiqn(tiqn);
1506 return ERR_PTR(-ENOMEM);
1509 stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1510 stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1511 stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1512 stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1513 stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1514 stats_cg->default_groups[5] = NULL;
1515 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1516 "iscsi_instance", &iscsi_stat_instance_cit);
1517 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1518 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1519 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1520 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1521 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1522 "iscsi_login_stats", &iscsi_stat_login_cit);
1523 config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1524 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1526 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1527 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1529 return &tiqn->tiqn_wwn;
1532 static void lio_target_call_coredeltiqn(
1535 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1536 struct config_item *df_item;
1537 struct config_group *stats_cg;
1540 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1541 for (i = 0; stats_cg->default_groups[i]; i++) {
1542 df_item = &stats_cg->default_groups[i]->cg_item;
1543 stats_cg->default_groups[i] = NULL;
1544 config_item_put(df_item);
1546 kfree(stats_cg->default_groups);
1548 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1550 iscsit_del_tiqn(tiqn);
1553 /* End LIO-Target TIQN struct contig_lio_target_cit */
1555 /* Start lio_target_discovery_auth_cit */
1557 #define DEF_DISC_AUTH_STR(name, flags) \
1558 __DEF_NACL_AUTH_STR(disc, name, flags) \
1559 static ssize_t iscsi_disc_show_##name( \
1560 struct target_fabric_configfs *tf, \
1563 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1566 static ssize_t iscsi_disc_store_##name( \
1567 struct target_fabric_configfs *tf, \
1571 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1575 #define DEF_DISC_AUTH_INT(name) \
1576 __DEF_NACL_AUTH_INT(disc, name) \
1577 static ssize_t iscsi_disc_show_##name( \
1578 struct target_fabric_configfs *tf, \
1581 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
1585 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1586 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1589 * One-way authentication userid
1591 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1592 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1594 * One-way authentication password
1596 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1597 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1599 * Enforce mutual authentication
1601 DEF_DISC_AUTH_INT(authenticate_target);
1602 DISC_AUTH_ATTR_RO(authenticate_target);
1604 * Mutual authentication userid
1606 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1607 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1609 * Mutual authentication password
1611 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1612 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1615 * enforce_discovery_auth
1617 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1618 struct target_fabric_configfs *tf,
1621 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1623 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1626 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1627 struct target_fabric_configfs *tf,
1631 struct iscsi_param *param;
1632 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1636 op = simple_strtoul(page, &endptr, 0);
1637 if ((op != 1) && (op != 0)) {
1638 pr_err("Illegal value for enforce_discovery_auth:"
1643 if (!discovery_tpg) {
1644 pr_err("iscsit_global->discovery_tpg is NULL\n");
1648 param = iscsi_find_param_from_key(AUTHMETHOD,
1649 discovery_tpg->param_list);
1655 * Reset the AuthMethod key to CHAP.
1657 if (iscsi_update_param_value(param, CHAP) < 0)
1660 discovery_tpg->tpg_attrib.authentication = 1;
1661 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1662 pr_debug("LIO-CORE[0] Successfully enabled"
1663 " authentication enforcement for iSCSI"
1664 " Discovery TPG\n");
1667 * Reset the AuthMethod key to CHAP,None
1669 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1672 discovery_tpg->tpg_attrib.authentication = 0;
1673 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1674 pr_debug("LIO-CORE[0] Successfully disabled"
1675 " authentication enforcement for iSCSI"
1676 " Discovery TPG\n");
1682 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1684 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1685 &iscsi_disc_userid.attr,
1686 &iscsi_disc_password.attr,
1687 &iscsi_disc_authenticate_target.attr,
1688 &iscsi_disc_userid_mutual.attr,
1689 &iscsi_disc_password_mutual.attr,
1690 &iscsi_disc_enforce_discovery_auth.attr,
1694 /* End lio_target_discovery_auth_cit */
1696 /* Start functions for target_core_fabric_ops */
1698 static char *iscsi_get_fabric_name(void)
1703 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1705 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1707 /* only used for printks or comparism with ->ref_task_tag */
1708 return (__force u32)cmd->init_task_tag;
1711 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1713 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1715 return cmd->i_state;
1718 static u32 lio_sess_get_index(struct se_session *se_sess)
1720 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1722 return sess->session_index;
1725 static u32 lio_sess_get_initiator_sid(
1726 struct se_session *se_sess,
1730 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1732 * iSCSI Initiator Session Identifier from RFC-3720.
1734 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1735 sess->isid[0], sess->isid[1], sess->isid[2],
1736 sess->isid[3], sess->isid[4], sess->isid[5]);
1739 static int lio_queue_data_in(struct se_cmd *se_cmd)
1741 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1743 cmd->i_state = ISTATE_SEND_DATAIN;
1744 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1749 static int lio_write_pending(struct se_cmd *se_cmd)
1751 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1752 struct iscsi_conn *conn = cmd->conn;
1754 if (!cmd->immediate_data && !cmd->unsolicited_data)
1755 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1760 static int lio_write_pending_status(struct se_cmd *se_cmd)
1762 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1765 spin_lock_bh(&cmd->istate_lock);
1766 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1767 spin_unlock_bh(&cmd->istate_lock);
1772 static int lio_queue_status(struct se_cmd *se_cmd)
1774 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1776 cmd->i_state = ISTATE_SEND_STATUS;
1777 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1782 static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1784 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1786 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1787 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1791 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1793 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1795 return &tpg->tpg_tiqn->tiqn[0];
1798 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1800 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1805 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1807 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1809 return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1812 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1814 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1816 return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1819 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1821 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1823 return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1826 static int lio_tpg_check_demo_mode_write_protect(
1827 struct se_portal_group *se_tpg)
1829 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1831 return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1834 static int lio_tpg_check_prod_mode_write_protect(
1835 struct se_portal_group *se_tpg)
1837 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1839 return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1842 static void lio_tpg_release_fabric_acl(
1843 struct se_portal_group *se_tpg,
1844 struct se_node_acl *se_acl)
1846 struct iscsi_node_acl *acl = container_of(se_acl,
1847 struct iscsi_node_acl, se_node_acl);
1852 * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1854 * Also, this function calls iscsit_inc_session_usage_count() on the
1855 * struct iscsi_session in question.
1857 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1859 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1861 spin_lock(&sess->conn_lock);
1862 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1863 atomic_read(&sess->session_logout) ||
1864 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1865 spin_unlock(&sess->conn_lock);
1868 atomic_set(&sess->session_reinstatement, 1);
1869 spin_unlock(&sess->conn_lock);
1871 iscsit_stop_time2retain_timer(sess);
1872 iscsit_stop_session(sess, 1, 1);
1878 * Calls iscsit_dec_session_usage_count() as inverse of
1879 * lio_tpg_shutdown_session()
1881 static void lio_tpg_close_session(struct se_session *se_sess)
1883 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1885 * If the iSCSI Session for the iSCSI Initiator Node exists,
1886 * forcefully shutdown the iSCSI NEXUS.
1888 iscsit_close_session(sess);
1891 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1893 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1895 return tpg->tpg_tiqn->tiqn_index;
1898 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1900 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1903 ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1904 iscsit_set_default_node_attribues(acl);
1907 static int lio_check_stop_free(struct se_cmd *se_cmd)
1909 return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1912 static void lio_release_cmd(struct se_cmd *se_cmd)
1914 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1916 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1917 cmd->release_cmd(cmd);
1920 /* End functions for target_core_fabric_ops */
1922 int iscsi_target_register_configfs(void)
1924 struct target_fabric_configfs *fabric;
1927 lio_target_fabric_configfs = NULL;
1928 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1929 if (IS_ERR(fabric)) {
1930 pr_err("target_fabric_configfs_init() for"
1931 " LIO-Target failed!\n");
1932 return PTR_ERR(fabric);
1935 * Setup the fabric API of function pointers used by target_core_mod..
1937 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1938 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1939 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1940 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1941 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1942 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1943 fabric->tf_ops.tpg_get_pr_transport_id_len =
1944 &iscsi_get_pr_transport_id_len;
1945 fabric->tf_ops.tpg_parse_pr_out_transport_id =
1946 &iscsi_parse_pr_out_transport_id;
1947 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1948 fabric->tf_ops.tpg_check_demo_mode_cache =
1949 &lio_tpg_check_demo_mode_cache;
1950 fabric->tf_ops.tpg_check_demo_mode_write_protect =
1951 &lio_tpg_check_demo_mode_write_protect;
1952 fabric->tf_ops.tpg_check_prod_mode_write_protect =
1953 &lio_tpg_check_prod_mode_write_protect;
1954 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1955 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1956 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1957 fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1958 fabric->tf_ops.release_cmd = &lio_release_cmd;
1959 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1960 fabric->tf_ops.close_session = &lio_tpg_close_session;
1961 fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1962 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1963 fabric->tf_ops.write_pending = &lio_write_pending;
1964 fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1965 fabric->tf_ops.set_default_node_attributes =
1966 &lio_set_default_node_attributes;
1967 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1968 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1969 fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1970 fabric->tf_ops.queue_status = &lio_queue_status;
1971 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1973 * Setup function pointers for generic logic in target_core_fabric_configfs.c
1975 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1976 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1977 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1978 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1979 fabric->tf_ops.fabric_post_link = NULL;
1980 fabric->tf_ops.fabric_pre_unlink = NULL;
1981 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1982 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1983 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1984 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1986 * Setup default attribute lists for various fabric->tf_cit_tmpl
1987 * sturct config_item_type's
1989 TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1990 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1991 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1992 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
1993 TF_CIT_TMPL(fabric)->tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
1994 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1995 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1996 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1997 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1998 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1999 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
2001 ret = target_fabric_configfs_register(fabric);
2003 pr_err("target_fabric_configfs_register() for"
2004 " LIO-Target failed!\n");
2005 target_fabric_configfs_free(fabric);
2009 lio_target_fabric_configfs = fabric;
2010 pr_debug("LIO_TARGET[0] - Set fabric ->"
2011 " lio_target_fabric_configfs\n");
2016 void iscsi_target_deregister_configfs(void)
2018 if (!lio_target_fabric_configfs)
2021 * Shutdown discovery sessions and disable discovery TPG
2023 if (iscsit_global->discovery_tpg)
2024 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
2026 target_fabric_configfs_deregister(lio_target_fabric_configfs);
2027 lio_target_fabric_configfs = NULL;
2028 pr_debug("LIO_TARGET[0] - Cleared"
2029 " lio_target_fabric_configfs\n");