treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
[sfrench/cifs-2.6.git] / drivers / target / iscsi / iscsi_target_configfs.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*******************************************************************************
3  * This file contains the configfs implementation for iSCSI Target mode
4  * from the LIO-Target Project.
5  *
6  * (c) Copyright 2007-2013 Datera, Inc.
7  *
8  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9  *
10  ****************************************************************************/
11
12 #include <linux/configfs.h>
13 #include <linux/ctype.h>
14 #include <linux/export.h>
15 #include <linux/inet.h>
16 #include <linux/module.h>
17 #include <net/ipv6.h>
18 #include <target/target_core_base.h>
19 #include <target/target_core_fabric.h>
20 #include <target/iscsi/iscsi_transport.h>
21 #include <target/iscsi/iscsi_target_core.h>
22 #include "iscsi_target_parameters.h"
23 #include "iscsi_target_device.h"
24 #include "iscsi_target_erl0.h"
25 #include "iscsi_target_nodeattrib.h"
26 #include "iscsi_target_tpg.h"
27 #include "iscsi_target_util.h"
28 #include "iscsi_target.h"
29 #include <target/iscsi/iscsi_target_stat.h>
30
31
32 /* Start items for lio_target_portal_cit */
33
34 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item)
35 {
36         return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np);
37 }
38
39 static ssize_t lio_target_np_driver_show(struct config_item *item, char *page,
40                                          enum iscsit_transport_type type)
41 {
42         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
43         struct iscsi_tpg_np *tpg_np_new;
44         ssize_t rb;
45
46         tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
47         if (tpg_np_new)
48                 rb = sprintf(page, "1\n");
49         else
50                 rb = sprintf(page, "0\n");
51
52         return rb;
53 }
54
55 static ssize_t lio_target_np_driver_store(struct config_item *item,
56                 const char *page, size_t count, enum iscsit_transport_type type,
57                 const char *mod_name)
58 {
59         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
60         struct iscsi_np *np;
61         struct iscsi_portal_group *tpg;
62         struct iscsi_tpg_np *tpg_np_new = NULL;
63         u32 op;
64         int rc;
65
66         rc = kstrtou32(page, 0, &op);
67         if (rc)
68                 return rc;
69         if ((op != 1) && (op != 0)) {
70                 pr_err("Illegal value for tpg_enable: %u\n", op);
71                 return -EINVAL;
72         }
73         np = tpg_np->tpg_np;
74         if (!np) {
75                 pr_err("Unable to locate struct iscsi_np from"
76                                 " struct iscsi_tpg_np\n");
77                 return -EINVAL;
78         }
79
80         tpg = tpg_np->tpg;
81         if (iscsit_get_tpg(tpg) < 0)
82                 return -EINVAL;
83
84         if (op) {
85                 if (strlen(mod_name)) {
86                         rc = request_module(mod_name);
87                         if (rc != 0) {
88                                 pr_warn("Unable to request_module for %s\n",
89                                         mod_name);
90                                 rc = 0;
91                         }
92                 }
93
94                 tpg_np_new = iscsit_tpg_add_network_portal(tpg,
95                                         &np->np_sockaddr, tpg_np, type);
96                 if (IS_ERR(tpg_np_new)) {
97                         rc = PTR_ERR(tpg_np_new);
98                         goto out;
99                 }
100         } else {
101                 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
102                 if (tpg_np_new) {
103                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_new);
104                         if (rc < 0)
105                                 goto out;
106                 }
107         }
108
109         iscsit_put_tpg(tpg);
110         return count;
111 out:
112         iscsit_put_tpg(tpg);
113         return rc;
114 }
115
116 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page)
117 {
118         return lio_target_np_driver_show(item, page, ISCSI_INFINIBAND);
119 }
120
121 static ssize_t lio_target_np_iser_store(struct config_item *item,
122                                         const char *page, size_t count)
123 {
124         return lio_target_np_driver_store(item, page, count,
125                                           ISCSI_INFINIBAND, "ib_isert");
126 }
127 CONFIGFS_ATTR(lio_target_np_, iser);
128
129 static ssize_t lio_target_np_cxgbit_show(struct config_item *item, char *page)
130 {
131         return lio_target_np_driver_show(item, page, ISCSI_CXGBIT);
132 }
133
134 static ssize_t lio_target_np_cxgbit_store(struct config_item *item,
135                                           const char *page, size_t count)
136 {
137         return lio_target_np_driver_store(item, page, count,
138                                           ISCSI_CXGBIT, "cxgbit");
139 }
140 CONFIGFS_ATTR(lio_target_np_, cxgbit);
141
142 static struct configfs_attribute *lio_target_portal_attrs[] = {
143         &lio_target_np_attr_iser,
144         &lio_target_np_attr_cxgbit,
145         NULL,
146 };
147
148 /* Stop items for lio_target_portal_cit */
149
150 /* Start items for lio_target_np_cit */
151
152 #define MAX_PORTAL_LEN          256
153
154 static struct se_tpg_np *lio_target_call_addnptotpg(
155         struct se_portal_group *se_tpg,
156         struct config_group *group,
157         const char *name)
158 {
159         struct iscsi_portal_group *tpg;
160         struct iscsi_tpg_np *tpg_np;
161         char *str, *str2, *ip_str, *port_str;
162         struct sockaddr_storage sockaddr = { };
163         int ret;
164         char buf[MAX_PORTAL_LEN + 1];
165
166         if (strlen(name) > MAX_PORTAL_LEN) {
167                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
168                         (int)strlen(name), MAX_PORTAL_LEN);
169                 return ERR_PTR(-EOVERFLOW);
170         }
171         memset(buf, 0, MAX_PORTAL_LEN + 1);
172         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
173
174         str = strstr(buf, "[");
175         if (str) {
176                 str2 = strstr(str, "]");
177                 if (!str2) {
178                         pr_err("Unable to locate trailing \"]\""
179                                 " in IPv6 iSCSI network portal address\n");
180                         return ERR_PTR(-EINVAL);
181                 }
182
183                 ip_str = str + 1; /* Skip over leading "[" */
184                 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
185                 str2++; /* Skip over the \0 */
186
187                 port_str = strstr(str2, ":");
188                 if (!port_str) {
189                         pr_err("Unable to locate \":port\""
190                                 " in IPv6 iSCSI network portal address\n");
191                         return ERR_PTR(-EINVAL);
192                 }
193                 *port_str = '\0'; /* Terminate string for IP */
194                 port_str++; /* Skip over ":" */
195         } else {
196                 ip_str = &buf[0];
197                 port_str = strstr(ip_str, ":");
198                 if (!port_str) {
199                         pr_err("Unable to locate \":port\""
200                                 " in IPv4 iSCSI network portal address\n");
201                         return ERR_PTR(-EINVAL);
202                 }
203                 *port_str = '\0'; /* Terminate string for IP */
204                 port_str++; /* Skip over ":" */
205         }
206
207         ret = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str,
208                         port_str, &sockaddr);
209         if (ret) {
210                 pr_err("malformed ip/port passed: %s\n", name);
211                 return ERR_PTR(ret);
212         }
213
214         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
215         ret = iscsit_get_tpg(tpg);
216         if (ret < 0)
217                 return ERR_PTR(-EINVAL);
218
219         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
220                 " PORTAL: %s\n",
221                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
222                 tpg->tpgt, name);
223         /*
224          * Assume ISCSI_TCP by default.  Other network portals for other
225          * iSCSI fabrics:
226          *
227          * Traditional iSCSI over SCTP (initial support)
228          * iSER/TCP (TODO, hardware available)
229          * iSER/SCTP (TODO, software emulation with osc-iwarp)
230          * iSER/IB (TODO, hardware available)
231          *
232          * can be enabled with attributes under
233          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
234          *
235          */
236         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
237                                 ISCSI_TCP);
238         if (IS_ERR(tpg_np)) {
239                 iscsit_put_tpg(tpg);
240                 return ERR_CAST(tpg_np);
241         }
242         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
243
244         iscsit_put_tpg(tpg);
245         return &tpg_np->se_tpg_np;
246 }
247
248 static void lio_target_call_delnpfromtpg(
249         struct se_tpg_np *se_tpg_np)
250 {
251         struct iscsi_portal_group *tpg;
252         struct iscsi_tpg_np *tpg_np;
253         struct se_portal_group *se_tpg;
254         int ret;
255
256         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
257         tpg = tpg_np->tpg;
258         ret = iscsit_get_tpg(tpg);
259         if (ret < 0)
260                 return;
261
262         se_tpg = &tpg->tpg_se_tpg;
263         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
264                 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
265                 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
266
267         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
268         if (ret < 0)
269                 goto out;
270
271         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
272 out:
273         iscsit_put_tpg(tpg);
274 }
275
276 /* End items for lio_target_np_cit */
277
278 /* Start items for lio_target_nacl_attrib_cit */
279
280 #define ISCSI_NACL_ATTR(name)                                           \
281 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
282                 char *page)                                             \
283 {                                                                       \
284         struct se_node_acl *se_nacl = attrib_to_nacl(item);             \
285         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
286                                         se_node_acl);                   \
287                                                                         \
288         return sprintf(page, "%u\n", nacl->node_attrib.name);           \
289 }                                                                       \
290                                                                         \
291 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
292                 const char *page, size_t count)                         \
293 {                                                                       \
294         struct se_node_acl *se_nacl = attrib_to_nacl(item);             \
295         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
296                                         se_node_acl);                   \
297         u32 val;                                                        \
298         int ret;                                                        \
299                                                                         \
300         ret = kstrtou32(page, 0, &val);                                 \
301         if (ret)                                                        \
302                 return ret;                                             \
303         ret = iscsit_na_##name(nacl, val);                              \
304         if (ret < 0)                                                    \
305                 return ret;                                             \
306                                                                         \
307         return count;                                                   \
308 }                                                                       \
309                                                                         \
310 CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
311
312 ISCSI_NACL_ATTR(dataout_timeout);
313 ISCSI_NACL_ATTR(dataout_timeout_retries);
314 ISCSI_NACL_ATTR(default_erl);
315 ISCSI_NACL_ATTR(nopin_timeout);
316 ISCSI_NACL_ATTR(nopin_response_timeout);
317 ISCSI_NACL_ATTR(random_datain_pdu_offsets);
318 ISCSI_NACL_ATTR(random_datain_seq_offsets);
319 ISCSI_NACL_ATTR(random_r2t_offsets);
320
321 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
322         &iscsi_nacl_attrib_attr_dataout_timeout,
323         &iscsi_nacl_attrib_attr_dataout_timeout_retries,
324         &iscsi_nacl_attrib_attr_default_erl,
325         &iscsi_nacl_attrib_attr_nopin_timeout,
326         &iscsi_nacl_attrib_attr_nopin_response_timeout,
327         &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
328         &iscsi_nacl_attrib_attr_random_datain_seq_offsets,
329         &iscsi_nacl_attrib_attr_random_r2t_offsets,
330         NULL,
331 };
332
333 /* End items for lio_target_nacl_attrib_cit */
334
335 /* Start items for lio_target_nacl_auth_cit */
336
337 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
338 static ssize_t __iscsi_##prefix##_##name##_show(                        \
339         struct iscsi_node_acl *nacl,                                    \
340         char *page)                                                     \
341 {                                                                       \
342         struct iscsi_node_auth *auth = &nacl->node_auth;                \
343                                                                         \
344         if (!capable(CAP_SYS_ADMIN))                                    \
345                 return -EPERM;                                          \
346         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
347 }                                                                       \
348                                                                         \
349 static ssize_t __iscsi_##prefix##_##name##_store(                       \
350         struct iscsi_node_acl *nacl,                                    \
351         const char *page,                                               \
352         size_t count)                                                   \
353 {                                                                       \
354         struct iscsi_node_auth *auth = &nacl->node_auth;                \
355                                                                         \
356         if (!capable(CAP_SYS_ADMIN))                                    \
357                 return -EPERM;                                          \
358         if (count >= sizeof(auth->name))                                \
359                 return -EINVAL;                                         \
360         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
361         if (!strncmp("NULL", auth->name, 4))                            \
362                 auth->naf_flags &= ~flags;                              \
363         else                                                            \
364                 auth->naf_flags |= flags;                               \
365                                                                         \
366         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
367             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
368                 auth->authenticate_target = 1;                          \
369         else                                                            \
370                 auth->authenticate_target = 0;                          \
371                                                                         \
372         return count;                                                   \
373 }
374
375 #define DEF_NACL_AUTH_STR(name, flags)                                  \
376         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
377 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item,  \
378                 char *page)                                             \
379 {                                                                       \
380         struct se_node_acl *nacl = auth_to_nacl(item);                  \
381         return __iscsi_nacl_auth_##name##_show(container_of(nacl,       \
382                         struct iscsi_node_acl, se_node_acl), page);     \
383 }                                                                       \
384 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
385                 const char *page, size_t count)                         \
386 {                                                                       \
387         struct se_node_acl *nacl = auth_to_nacl(item);                  \
388         return __iscsi_nacl_auth_##name##_store(container_of(nacl,      \
389                         struct iscsi_node_acl, se_node_acl), page, count); \
390 }                                                                       \
391                                                                         \
392 CONFIGFS_ATTR(iscsi_nacl_auth_, name)
393
394 /*
395  * One-way authentication userid
396  */
397 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
398 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
399 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
400 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
401
402 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
403 static ssize_t __iscsi_##prefix##_##name##_show(                                \
404         struct iscsi_node_acl *nacl,                                    \
405         char *page)                                                     \
406 {                                                                       \
407         struct iscsi_node_auth *auth = &nacl->node_auth;                \
408                                                                         \
409         if (!capable(CAP_SYS_ADMIN))                                    \
410                 return -EPERM;                                          \
411                                                                         \
412         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
413 }
414
415 #define DEF_NACL_AUTH_INT(name)                                         \
416         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
417 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item,  \
418                 char *page)                                             \
419 {                                                                       \
420         struct se_node_acl *nacl = auth_to_nacl(item);                  \
421         return __iscsi_nacl_auth_##name##_show(container_of(nacl,       \
422                         struct iscsi_node_acl, se_node_acl), page);     \
423 }                                                                       \
424                                                                         \
425 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
426
427 DEF_NACL_AUTH_INT(authenticate_target);
428
429 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
430         &iscsi_nacl_auth_attr_userid,
431         &iscsi_nacl_auth_attr_password,
432         &iscsi_nacl_auth_attr_authenticate_target,
433         &iscsi_nacl_auth_attr_userid_mutual,
434         &iscsi_nacl_auth_attr_password_mutual,
435         NULL,
436 };
437
438 /* End items for lio_target_nacl_auth_cit */
439
440 /* Start items for lio_target_nacl_param_cit */
441
442 #define ISCSI_NACL_PARAM(name)                                          \
443 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
444                 char *page)                                             \
445 {                                                                       \
446         struct se_node_acl *se_nacl = param_to_nacl(item);              \
447         struct iscsi_session *sess;                                     \
448         struct se_session *se_sess;                                     \
449         ssize_t rb;                                                     \
450                                                                         \
451         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
452         se_sess = se_nacl->nacl_sess;                                   \
453         if (!se_sess) {                                                 \
454                 rb = snprintf(page, PAGE_SIZE,                          \
455                         "No Active iSCSI Session\n");                   \
456         } else {                                                        \
457                 sess = se_sess->fabric_sess_ptr;                        \
458                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
459                         (u32)sess->sess_ops->name);                     \
460         }                                                               \
461         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
462                                                                         \
463         return rb;                                                      \
464 }                                                                       \
465                                                                         \
466 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
467
468 ISCSI_NACL_PARAM(MaxConnections);
469 ISCSI_NACL_PARAM(InitialR2T);
470 ISCSI_NACL_PARAM(ImmediateData);
471 ISCSI_NACL_PARAM(MaxBurstLength);
472 ISCSI_NACL_PARAM(FirstBurstLength);
473 ISCSI_NACL_PARAM(DefaultTime2Wait);
474 ISCSI_NACL_PARAM(DefaultTime2Retain);
475 ISCSI_NACL_PARAM(MaxOutstandingR2T);
476 ISCSI_NACL_PARAM(DataPDUInOrder);
477 ISCSI_NACL_PARAM(DataSequenceInOrder);
478 ISCSI_NACL_PARAM(ErrorRecoveryLevel);
479
480 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
481         &iscsi_nacl_param_attr_MaxConnections,
482         &iscsi_nacl_param_attr_InitialR2T,
483         &iscsi_nacl_param_attr_ImmediateData,
484         &iscsi_nacl_param_attr_MaxBurstLength,
485         &iscsi_nacl_param_attr_FirstBurstLength,
486         &iscsi_nacl_param_attr_DefaultTime2Wait,
487         &iscsi_nacl_param_attr_DefaultTime2Retain,
488         &iscsi_nacl_param_attr_MaxOutstandingR2T,
489         &iscsi_nacl_param_attr_DataPDUInOrder,
490         &iscsi_nacl_param_attr_DataSequenceInOrder,
491         &iscsi_nacl_param_attr_ErrorRecoveryLevel,
492         NULL,
493 };
494
495 /* End items for lio_target_nacl_param_cit */
496
497 /* Start items for lio_target_acl_cit */
498
499 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
500 {
501         struct se_node_acl *se_nacl = acl_to_nacl(item);
502         struct iscsi_session *sess;
503         struct iscsi_conn *conn;
504         struct se_session *se_sess;
505         ssize_t rb = 0;
506         u32 max_cmd_sn;
507
508         spin_lock_bh(&se_nacl->nacl_sess_lock);
509         se_sess = se_nacl->nacl_sess;
510         if (!se_sess) {
511                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
512                         " Endpoint: %s\n", se_nacl->initiatorname);
513         } else {
514                 sess = se_sess->fabric_sess_ptr;
515
516                 rb += sprintf(page+rb, "InitiatorName: %s\n",
517                         sess->sess_ops->InitiatorName);
518                 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
519                         sess->sess_ops->InitiatorAlias);
520
521                 rb += sprintf(page+rb,
522                               "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
523                               sess->sid, sess->isid, sess->tsih);
524                 rb += sprintf(page+rb, "SessionType: %s\n",
525                                 (sess->sess_ops->SessionType) ?
526                                 "Discovery" : "Normal");
527                 rb += sprintf(page+rb, "Session State: ");
528                 switch (sess->session_state) {
529                 case TARG_SESS_STATE_FREE:
530                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
531                         break;
532                 case TARG_SESS_STATE_ACTIVE:
533                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
534                         break;
535                 case TARG_SESS_STATE_LOGGED_IN:
536                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
537                         break;
538                 case TARG_SESS_STATE_FAILED:
539                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
540                         break;
541                 case TARG_SESS_STATE_IN_CONTINUE:
542                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
543                         break;
544                 default:
545                         rb += sprintf(page+rb, "ERROR: Unknown Session"
546                                         " State!\n");
547                         break;
548                 }
549
550                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
551                                 " Values]-----------------------\n");
552                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
553                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
554                 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
555                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
556                                 "   0x%08x   0x%08x\n",
557                         sess->cmdsn_window,
558                         (max_cmd_sn - sess->exp_cmd_sn) + 1,
559                         sess->exp_cmd_sn, max_cmd_sn,
560                         sess->init_task_tag, sess->targ_xfer_tag);
561                 rb += sprintf(page+rb, "----------------------[iSCSI"
562                                 " Connections]-------------------------\n");
563
564                 spin_lock(&sess->conn_lock);
565                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
566                         rb += sprintf(page+rb, "CID: %hu  Connection"
567                                         " State: ", conn->cid);
568                         switch (conn->conn_state) {
569                         case TARG_CONN_STATE_FREE:
570                                 rb += sprintf(page+rb,
571                                         "TARG_CONN_STATE_FREE\n");
572                                 break;
573                         case TARG_CONN_STATE_XPT_UP:
574                                 rb += sprintf(page+rb,
575                                         "TARG_CONN_STATE_XPT_UP\n");
576                                 break;
577                         case TARG_CONN_STATE_IN_LOGIN:
578                                 rb += sprintf(page+rb,
579                                         "TARG_CONN_STATE_IN_LOGIN\n");
580                                 break;
581                         case TARG_CONN_STATE_LOGGED_IN:
582                                 rb += sprintf(page+rb,
583                                         "TARG_CONN_STATE_LOGGED_IN\n");
584                                 break;
585                         case TARG_CONN_STATE_IN_LOGOUT:
586                                 rb += sprintf(page+rb,
587                                         "TARG_CONN_STATE_IN_LOGOUT\n");
588                                 break;
589                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
590                                 rb += sprintf(page+rb,
591                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
592                                 break;
593                         case TARG_CONN_STATE_CLEANUP_WAIT:
594                                 rb += sprintf(page+rb,
595                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
596                                 break;
597                         default:
598                                 rb += sprintf(page+rb,
599                                         "ERROR: Unknown Connection State!\n");
600                                 break;
601                         }
602
603                         rb += sprintf(page+rb, "   Address %pISc %s", &conn->login_sockaddr,
604                                 (conn->network_transport == ISCSI_TCP) ?
605                                 "TCP" : "SCTP");
606                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
607                                 conn->stat_sn);
608                 }
609                 spin_unlock(&sess->conn_lock);
610         }
611         spin_unlock_bh(&se_nacl->nacl_sess_lock);
612
613         return rb;
614 }
615
616 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
617                 char *page)
618 {
619         return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth);
620 }
621
622 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
623                 const char *page, size_t count)
624 {
625         struct se_node_acl *se_nacl = acl_to_nacl(item);
626         struct se_portal_group *se_tpg = se_nacl->se_tpg;
627         struct iscsi_portal_group *tpg = container_of(se_tpg,
628                         struct iscsi_portal_group, tpg_se_tpg);
629         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
630         u32 cmdsn_depth = 0;
631         int ret;
632
633         ret = kstrtou32(page, 0, &cmdsn_depth);
634         if (ret)
635                 return ret;
636         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
637                 pr_err("Passed cmdsn_depth: %u exceeds"
638                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
639                         TA_DEFAULT_CMDSN_DEPTH_MAX);
640                 return -EINVAL;
641         }
642         acl_ci = &se_nacl->acl_group.cg_item;
643         if (!acl_ci) {
644                 pr_err("Unable to locatel acl_ci\n");
645                 return -EINVAL;
646         }
647         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
648         if (!tpg_ci) {
649                 pr_err("Unable to locate tpg_ci\n");
650                 return -EINVAL;
651         }
652         wwn_ci = &tpg_ci->ci_group->cg_item;
653         if (!wwn_ci) {
654                 pr_err("Unable to locate config_item wwn_ci\n");
655                 return -EINVAL;
656         }
657
658         if (iscsit_get_tpg(tpg) < 0)
659                 return -EINVAL;
660
661         ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);
662
663         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
664                 "InitiatorName: %s\n", config_item_name(wwn_ci),
665                 config_item_name(tpg_ci), cmdsn_depth,
666                 config_item_name(acl_ci));
667
668         iscsit_put_tpg(tpg);
669         return (!ret) ? count : (ssize_t)ret;
670 }
671
672 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
673 {
674         return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
675 }
676
677 static ssize_t lio_target_nacl_tag_store(struct config_item *item,
678                 const char *page, size_t count)
679 {
680         struct se_node_acl *se_nacl = acl_to_nacl(item);
681         int ret;
682
683         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
684
685         if (ret < 0)
686                 return ret;
687         return count;
688 }
689
690 CONFIGFS_ATTR_RO(lio_target_nacl_, info);
691 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
692 CONFIGFS_ATTR(lio_target_nacl_, tag);
693
694 static struct configfs_attribute *lio_target_initiator_attrs[] = {
695         &lio_target_nacl_attr_info,
696         &lio_target_nacl_attr_cmdsn_depth,
697         &lio_target_nacl_attr_tag,
698         NULL,
699 };
700
701 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
702                 const char *name)
703 {
704         struct iscsi_node_acl *acl =
705                 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
706
707         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
708                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
709         configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
710                         &se_nacl->acl_fabric_stat_group);
711         return 0;
712 }
713
714 /* End items for lio_target_acl_cit */
715
716 /* Start items for lio_target_tpg_attrib_cit */
717
718 #define DEF_TPG_ATTRIB(name)                                            \
719                                                                         \
720 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
721                 char *page)                                             \
722 {                                                                       \
723         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
724         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
725                         struct iscsi_portal_group, tpg_se_tpg); \
726         ssize_t rb;                                                     \
727                                                                         \
728         if (iscsit_get_tpg(tpg) < 0)                                    \
729                 return -EINVAL;                                         \
730                                                                         \
731         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
732         iscsit_put_tpg(tpg);                                            \
733         return rb;                                                      \
734 }                                                                       \
735                                                                         \
736 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
737                 const char *page, size_t count)                         \
738 {                                                                       \
739         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
740         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
741                         struct iscsi_portal_group, tpg_se_tpg); \
742         u32 val;                                                        \
743         int ret;                                                        \
744                                                                         \
745         if (iscsit_get_tpg(tpg) < 0)                                    \
746                 return -EINVAL;                                         \
747                                                                         \
748         ret = kstrtou32(page, 0, &val);                                 \
749         if (ret)                                                        \
750                 goto out;                                               \
751         ret = iscsit_ta_##name(tpg, val);                               \
752         if (ret < 0)                                                    \
753                 goto out;                                               \
754                                                                         \
755         iscsit_put_tpg(tpg);                                            \
756         return count;                                                   \
757 out:                                                                    \
758         iscsit_put_tpg(tpg);                                            \
759         return ret;                                                     \
760 }                                                                       \
761 CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
762
763 DEF_TPG_ATTRIB(authentication);
764 DEF_TPG_ATTRIB(login_timeout);
765 DEF_TPG_ATTRIB(netif_timeout);
766 DEF_TPG_ATTRIB(generate_node_acls);
767 DEF_TPG_ATTRIB(default_cmdsn_depth);
768 DEF_TPG_ATTRIB(cache_dynamic_acls);
769 DEF_TPG_ATTRIB(demo_mode_write_protect);
770 DEF_TPG_ATTRIB(prod_mode_write_protect);
771 DEF_TPG_ATTRIB(demo_mode_discovery);
772 DEF_TPG_ATTRIB(default_erl);
773 DEF_TPG_ATTRIB(t10_pi);
774 DEF_TPG_ATTRIB(fabric_prot_type);
775 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
776 DEF_TPG_ATTRIB(login_keys_workaround);
777
778 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
779         &iscsi_tpg_attrib_attr_authentication,
780         &iscsi_tpg_attrib_attr_login_timeout,
781         &iscsi_tpg_attrib_attr_netif_timeout,
782         &iscsi_tpg_attrib_attr_generate_node_acls,
783         &iscsi_tpg_attrib_attr_default_cmdsn_depth,
784         &iscsi_tpg_attrib_attr_cache_dynamic_acls,
785         &iscsi_tpg_attrib_attr_demo_mode_write_protect,
786         &iscsi_tpg_attrib_attr_prod_mode_write_protect,
787         &iscsi_tpg_attrib_attr_demo_mode_discovery,
788         &iscsi_tpg_attrib_attr_default_erl,
789         &iscsi_tpg_attrib_attr_t10_pi,
790         &iscsi_tpg_attrib_attr_fabric_prot_type,
791         &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
792         &iscsi_tpg_attrib_attr_login_keys_workaround,
793         NULL,
794 };
795
796 /* End items for lio_target_tpg_attrib_cit */
797
798 /* Start items for lio_target_tpg_auth_cit */
799
800 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
801 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
802                 char *page)                                                     \
803 {                                                                               \
804         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
805                                 struct iscsi_portal_group, tpg_se_tpg);         \
806         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
807                                                                                 \
808         if (!capable(CAP_SYS_ADMIN))                                            \
809                 return -EPERM;                                                  \
810                                                                                 \
811         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
812 }                                                                               \
813                                                                                 \
814 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
815                 const char *page, size_t count)                                 \
816 {                                                                               \
817         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
818                                 struct iscsi_portal_group, tpg_se_tpg);         \
819         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
820                                                                                 \
821         if (!capable(CAP_SYS_ADMIN))                                            \
822                 return -EPERM;                                                  \
823                                                                                 \
824         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
825         if (!(strncmp("NULL", auth->name, 4)))                                  \
826                 auth->naf_flags &= ~flags;                                      \
827         else                                                                    \
828                 auth->naf_flags |= flags;                                       \
829                                                                                 \
830         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
831             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
832                 auth->authenticate_target = 1;                                  \
833         else                                                                    \
834                 auth->authenticate_target = 0;                                  \
835                                                                                 \
836         return count;                                                           \
837 }
838
839 #define DEF_TPG_AUTH_STR(name, flags)                                           \
840         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
841 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item,           \
842                 char *page)                                                     \
843 {                                                                               \
844         return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page);         \
845 }                                                                               \
846                                                                                 \
847 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item,          \
848                 const char *page, size_t count)                                 \
849 {                                                                               \
850         return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
851 }                                                                               \
852                                                                                 \
853 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
854
855
856 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
857 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
858 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
859 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
860
861 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
862 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
863                 char *page)                                                             \
864 {                                                                               \
865         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
866                                 struct iscsi_portal_group, tpg_se_tpg);         \
867         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
868                                                                                 \
869         if (!capable(CAP_SYS_ADMIN))                                            \
870                 return -EPERM;                                                  \
871                                                                                 \
872         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
873 }
874
875 #define DEF_TPG_AUTH_INT(name)                                                  \
876         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
877 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item,           \
878                 char *page) \
879 {                                                                               \
880         return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page);         \
881 }                                                                               \
882 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
883
884 DEF_TPG_AUTH_INT(authenticate_target);
885
886 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
887         &iscsi_tpg_auth_attr_userid,
888         &iscsi_tpg_auth_attr_password,
889         &iscsi_tpg_auth_attr_authenticate_target,
890         &iscsi_tpg_auth_attr_userid_mutual,
891         &iscsi_tpg_auth_attr_password_mutual,
892         NULL,
893 };
894
895 /* End items for lio_target_tpg_auth_cit */
896
897 /* Start items for lio_target_tpg_param_cit */
898
899 #define DEF_TPG_PARAM(name)                                             \
900 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item,  \
901                 char *page)                                             \
902 {                                                                       \
903         struct se_portal_group *se_tpg = param_to_tpg(item);            \
904         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
905                         struct iscsi_portal_group, tpg_se_tpg);         \
906         struct iscsi_param *param;                                      \
907         ssize_t rb;                                                     \
908                                                                         \
909         if (iscsit_get_tpg(tpg) < 0)                                    \
910                 return -EINVAL;                                         \
911                                                                         \
912         param = iscsi_find_param_from_key(__stringify(name),            \
913                                 tpg->param_list);                       \
914         if (!param) {                                                   \
915                 iscsit_put_tpg(tpg);                                    \
916                 return -EINVAL;                                         \
917         }                                                               \
918         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
919                                                                         \
920         iscsit_put_tpg(tpg);                                            \
921         return rb;                                                      \
922 }                                                                       \
923 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
924                 const char *page, size_t count)                         \
925 {                                                                       \
926         struct se_portal_group *se_tpg = param_to_tpg(item);            \
927         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
928                         struct iscsi_portal_group, tpg_se_tpg);         \
929         char *buf;                                                      \
930         int ret, len;                                                   \
931                                                                         \
932         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
933         if (!buf)                                                       \
934                 return -ENOMEM;                                         \
935         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
936         if (isspace(buf[len-1]))                                        \
937                 buf[len-1] = '\0'; /* Kill newline */                   \
938                                                                         \
939         if (iscsit_get_tpg(tpg) < 0) {                                  \
940                 kfree(buf);                                             \
941                 return -EINVAL;                                         \
942         }                                                               \
943                                                                         \
944         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
945         if (ret < 0)                                                    \
946                 goto out;                                               \
947                                                                         \
948         kfree(buf);                                                     \
949         iscsit_put_tpg(tpg);                                            \
950         return count;                                                   \
951 out:                                                                    \
952         kfree(buf);                                                     \
953         iscsit_put_tpg(tpg);                                            \
954         return -EINVAL;                                                 \
955 }                                                                       \
956 CONFIGFS_ATTR(iscsi_tpg_param_, name)
957
958 DEF_TPG_PARAM(AuthMethod);
959 DEF_TPG_PARAM(HeaderDigest);
960 DEF_TPG_PARAM(DataDigest);
961 DEF_TPG_PARAM(MaxConnections);
962 DEF_TPG_PARAM(TargetAlias);
963 DEF_TPG_PARAM(InitialR2T);
964 DEF_TPG_PARAM(ImmediateData);
965 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
966 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
967 DEF_TPG_PARAM(MaxBurstLength);
968 DEF_TPG_PARAM(FirstBurstLength);
969 DEF_TPG_PARAM(DefaultTime2Wait);
970 DEF_TPG_PARAM(DefaultTime2Retain);
971 DEF_TPG_PARAM(MaxOutstandingR2T);
972 DEF_TPG_PARAM(DataPDUInOrder);
973 DEF_TPG_PARAM(DataSequenceInOrder);
974 DEF_TPG_PARAM(ErrorRecoveryLevel);
975 DEF_TPG_PARAM(IFMarker);
976 DEF_TPG_PARAM(OFMarker);
977 DEF_TPG_PARAM(IFMarkInt);
978 DEF_TPG_PARAM(OFMarkInt);
979
980 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
981         &iscsi_tpg_param_attr_AuthMethod,
982         &iscsi_tpg_param_attr_HeaderDigest,
983         &iscsi_tpg_param_attr_DataDigest,
984         &iscsi_tpg_param_attr_MaxConnections,
985         &iscsi_tpg_param_attr_TargetAlias,
986         &iscsi_tpg_param_attr_InitialR2T,
987         &iscsi_tpg_param_attr_ImmediateData,
988         &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
989         &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
990         &iscsi_tpg_param_attr_MaxBurstLength,
991         &iscsi_tpg_param_attr_FirstBurstLength,
992         &iscsi_tpg_param_attr_DefaultTime2Wait,
993         &iscsi_tpg_param_attr_DefaultTime2Retain,
994         &iscsi_tpg_param_attr_MaxOutstandingR2T,
995         &iscsi_tpg_param_attr_DataPDUInOrder,
996         &iscsi_tpg_param_attr_DataSequenceInOrder,
997         &iscsi_tpg_param_attr_ErrorRecoveryLevel,
998         &iscsi_tpg_param_attr_IFMarker,
999         &iscsi_tpg_param_attr_OFMarker,
1000         &iscsi_tpg_param_attr_IFMarkInt,
1001         &iscsi_tpg_param_attr_OFMarkInt,
1002         NULL,
1003 };
1004
1005 /* End items for lio_target_tpg_param_cit */
1006
1007 /* Start items for lio_target_tpg_cit */
1008
1009 static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page)
1010 {
1011         struct se_portal_group *se_tpg = to_tpg(item);
1012         struct iscsi_portal_group *tpg = container_of(se_tpg,
1013                         struct iscsi_portal_group, tpg_se_tpg);
1014         ssize_t len;
1015
1016         spin_lock(&tpg->tpg_state_lock);
1017         len = sprintf(page, "%d\n",
1018                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1019         spin_unlock(&tpg->tpg_state_lock);
1020
1021         return len;
1022 }
1023
1024 static ssize_t lio_target_tpg_enable_store(struct config_item *item,
1025                 const char *page, size_t count)
1026 {
1027         struct se_portal_group *se_tpg = to_tpg(item);
1028         struct iscsi_portal_group *tpg = container_of(se_tpg,
1029                         struct iscsi_portal_group, tpg_se_tpg);
1030         u32 op;
1031         int ret;
1032
1033         ret = kstrtou32(page, 0, &op);
1034         if (ret)
1035                 return ret;
1036         if ((op != 1) && (op != 0)) {
1037                 pr_err("Illegal value for tpg_enable: %u\n", op);
1038                 return -EINVAL;
1039         }
1040
1041         ret = iscsit_get_tpg(tpg);
1042         if (ret < 0)
1043                 return -EINVAL;
1044
1045         if (op) {
1046                 ret = iscsit_tpg_enable_portal_group(tpg);
1047                 if (ret < 0)
1048                         goto out;
1049         } else {
1050                 /*
1051                  * iscsit_tpg_disable_portal_group() assumes force=1
1052                  */
1053                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1054                 if (ret < 0)
1055                         goto out;
1056         }
1057
1058         iscsit_put_tpg(tpg);
1059         return count;
1060 out:
1061         iscsit_put_tpg(tpg);
1062         return -EINVAL;
1063 }
1064
1065
1066 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1067                 char *page)
1068 {
1069         return target_show_dynamic_sessions(to_tpg(item), page);
1070 }
1071
1072 CONFIGFS_ATTR(lio_target_tpg_, enable);
1073 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1074
1075 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1076         &lio_target_tpg_attr_enable,
1077         &lio_target_tpg_attr_dynamic_sessions,
1078         NULL,
1079 };
1080
1081 /* End items for lio_target_tpg_cit */
1082
1083 /* Start items for lio_target_tiqn_cit */
1084
1085 static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,
1086                                                       const char *name)
1087 {
1088         struct iscsi_portal_group *tpg;
1089         struct iscsi_tiqn *tiqn;
1090         char *tpgt_str;
1091         int ret;
1092         u16 tpgt;
1093
1094         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1095         /*
1096          * Only tpgt_# directory groups can be created below
1097          * target/iscsi/iqn.superturodiskarry/
1098          */
1099         tpgt_str = strstr(name, "tpgt_");
1100         if (!tpgt_str) {
1101                 pr_err("Unable to locate \"tpgt_#\" directory"
1102                                 " group\n");
1103                 return NULL;
1104         }
1105         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1106         ret = kstrtou16(tpgt_str, 0, &tpgt);
1107         if (ret)
1108                 return NULL;
1109
1110         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1111         if (!tpg)
1112                 return NULL;
1113
1114         ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1115         if (ret < 0)
1116                 goto free_out;
1117
1118         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1119         if (ret != 0)
1120                 goto out;
1121
1122         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1123         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1124                         name);
1125         return &tpg->tpg_se_tpg;
1126 out:
1127         core_tpg_deregister(&tpg->tpg_se_tpg);
1128 free_out:
1129         kfree(tpg);
1130         return NULL;
1131 }
1132
1133 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1134 {
1135         struct iscsi_portal_group *tpg;
1136         struct iscsi_tiqn *tiqn;
1137
1138         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1139         tiqn = tpg->tpg_tiqn;
1140         /*
1141          * iscsit_tpg_del_portal_group() assumes force=1
1142          */
1143         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1144         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1145 }
1146
1147 /* End items for lio_target_tiqn_cit */
1148
1149 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1150
1151 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1152                 char *page)
1153 {
1154         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1155 }
1156
1157 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1158
1159 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1160         &lio_target_wwn_attr_lio_version,
1161         NULL,
1162 };
1163
1164 static struct se_wwn *lio_target_call_coreaddtiqn(
1165         struct target_fabric_configfs *tf,
1166         struct config_group *group,
1167         const char *name)
1168 {
1169         struct iscsi_tiqn *tiqn;
1170
1171         tiqn = iscsit_add_tiqn((unsigned char *)name);
1172         if (IS_ERR(tiqn))
1173                 return ERR_CAST(tiqn);
1174
1175         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1176         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1177                         " %s\n", name);
1178         return &tiqn->tiqn_wwn;
1179 }
1180
1181 static void lio_target_add_wwn_groups(struct se_wwn *wwn)
1182 {
1183         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1184
1185         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1186                         "iscsi_instance", &iscsi_stat_instance_cit);
1187         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1188                         &tiqn->tiqn_wwn.fabric_stat_group);
1189
1190         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1191                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1192         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1193                         &tiqn->tiqn_wwn.fabric_stat_group);
1194
1195         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1196                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1197         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1198                         &tiqn->tiqn_wwn.fabric_stat_group);
1199
1200         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1201                         "iscsi_login_stats", &iscsi_stat_login_cit);
1202         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1203                         &tiqn->tiqn_wwn.fabric_stat_group);
1204
1205         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1206                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1207         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1208                         &tiqn->tiqn_wwn.fabric_stat_group);
1209 }
1210
1211 static void lio_target_call_coredeltiqn(
1212         struct se_wwn *wwn)
1213 {
1214         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1215
1216         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1217                         tiqn->tiqn);
1218         iscsit_del_tiqn(tiqn);
1219 }
1220
1221 /* End LIO-Target TIQN struct contig_lio_target_cit */
1222
1223 /* Start lio_target_discovery_auth_cit */
1224
1225 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1226         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1227 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1228 {                                                                       \
1229         return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1230                 page);                                                  \
1231 }                                                                       \
1232 static ssize_t iscsi_disc_##name##_store(struct config_item *item,      \
1233                 const char *page, size_t count)                         \
1234 {                                                                       \
1235         return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl,       \
1236                 page, count);                                           \
1237                                                                         \
1238 }                                                                       \
1239 CONFIGFS_ATTR(iscsi_disc_, name)
1240
1241 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1242 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1243 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1244 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1245
1246 #define DEF_DISC_AUTH_INT(name)                                         \
1247         __DEF_NACL_AUTH_INT(disc, name)                                 \
1248 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1249 {                                                                       \
1250         return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1251                         page);                                          \
1252 }                                                                       \
1253 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1254
1255 DEF_DISC_AUTH_INT(authenticate_target);
1256
1257
1258 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1259                 char *page)
1260 {
1261         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1262
1263         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1264 }
1265
1266 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1267                 const char *page, size_t count)
1268 {
1269         struct iscsi_param *param;
1270         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1271         u32 op;
1272         int err;
1273
1274         err = kstrtou32(page, 0, &op);
1275         if (err)
1276                 return -EINVAL;
1277         if ((op != 1) && (op != 0)) {
1278                 pr_err("Illegal value for enforce_discovery_auth:"
1279                                 " %u\n", op);
1280                 return -EINVAL;
1281         }
1282
1283         if (!discovery_tpg) {
1284                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1285                 return -EINVAL;
1286         }
1287
1288         param = iscsi_find_param_from_key(AUTHMETHOD,
1289                                 discovery_tpg->param_list);
1290         if (!param)
1291                 return -EINVAL;
1292
1293         if (op) {
1294                 /*
1295                  * Reset the AuthMethod key to CHAP.
1296                  */
1297                 if (iscsi_update_param_value(param, CHAP) < 0)
1298                         return -EINVAL;
1299
1300                 discovery_tpg->tpg_attrib.authentication = 1;
1301                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1302                 pr_debug("LIO-CORE[0] Successfully enabled"
1303                         " authentication enforcement for iSCSI"
1304                         " Discovery TPG\n");
1305         } else {
1306                 /*
1307                  * Reset the AuthMethod key to CHAP,None
1308                  */
1309                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1310                         return -EINVAL;
1311
1312                 discovery_tpg->tpg_attrib.authentication = 0;
1313                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1314                 pr_debug("LIO-CORE[0] Successfully disabled"
1315                         " authentication enforcement for iSCSI"
1316                         " Discovery TPG\n");
1317         }
1318
1319         return count;
1320 }
1321
1322 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1323
1324 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1325         &iscsi_disc_attr_userid,
1326         &iscsi_disc_attr_password,
1327         &iscsi_disc_attr_authenticate_target,
1328         &iscsi_disc_attr_userid_mutual,
1329         &iscsi_disc_attr_password_mutual,
1330         &iscsi_disc_attr_enforce_discovery_auth,
1331         NULL,
1332 };
1333
1334 /* End lio_target_discovery_auth_cit */
1335
1336 /* Start functions for target_core_fabric_ops */
1337
1338 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1339 {
1340         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1341
1342         return cmd->i_state;
1343 }
1344
1345 static u32 lio_sess_get_index(struct se_session *se_sess)
1346 {
1347         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1348
1349         return sess->session_index;
1350 }
1351
1352 static u32 lio_sess_get_initiator_sid(
1353         struct se_session *se_sess,
1354         unsigned char *buf,
1355         u32 size)
1356 {
1357         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1358         /*
1359          * iSCSI Initiator Session Identifier from RFC-3720.
1360          */
1361         return snprintf(buf, size, "%6phN", sess->isid);
1362 }
1363
1364 static int lio_queue_data_in(struct se_cmd *se_cmd)
1365 {
1366         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1367         struct iscsi_conn *conn = cmd->conn;
1368
1369         cmd->i_state = ISTATE_SEND_DATAIN;
1370         return conn->conn_transport->iscsit_queue_data_in(conn, cmd);
1371 }
1372
1373 static int lio_write_pending(struct se_cmd *se_cmd)
1374 {
1375         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1376         struct iscsi_conn *conn = cmd->conn;
1377
1378         if (!cmd->immediate_data && !cmd->unsolicited_data)
1379                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1380
1381         return 0;
1382 }
1383
1384 static int lio_queue_status(struct se_cmd *se_cmd)
1385 {
1386         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1387         struct iscsi_conn *conn = cmd->conn;
1388
1389         cmd->i_state = ISTATE_SEND_STATUS;
1390
1391         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1392                 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
1393         }
1394         return conn->conn_transport->iscsit_queue_status(conn, cmd);
1395 }
1396
1397 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1398 {
1399         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1400
1401         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1402         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1403 }
1404
1405 static void lio_aborted_task(struct se_cmd *se_cmd)
1406 {
1407         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1408
1409         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1410 }
1411
1412 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1413 {
1414         return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1415 }
1416
1417 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1418 {
1419         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1420 }
1421
1422 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1423 {
1424         return iscsi_tpg(se_tpg)->tpgt;
1425 }
1426
1427 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1428 {
1429         return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1430 }
1431
1432 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1433 {
1434         return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1435 }
1436
1437 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1438 {
1439         return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1440 }
1441
1442 static int lio_tpg_check_demo_mode_write_protect(
1443         struct se_portal_group *se_tpg)
1444 {
1445         return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1446 }
1447
1448 static int lio_tpg_check_prod_mode_write_protect(
1449         struct se_portal_group *se_tpg)
1450 {
1451         return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1452 }
1453
1454 static int lio_tpg_check_prot_fabric_only(
1455         struct se_portal_group *se_tpg)
1456 {
1457         /*
1458          * Only report fabric_prot_type if t10_pi has also been enabled
1459          * for incoming ib_isert sessions.
1460          */
1461         if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1462                 return 0;
1463         return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1464 }
1465
1466 /*
1467  * This function calls iscsit_inc_session_usage_count() on the
1468  * struct iscsi_session in question.
1469  */
1470 static void lio_tpg_close_session(struct se_session *se_sess)
1471 {
1472         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1473         struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
1474
1475         spin_lock_bh(&se_tpg->session_lock);
1476         spin_lock(&sess->conn_lock);
1477         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1478             atomic_read(&sess->session_logout) ||
1479             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1480                 spin_unlock(&sess->conn_lock);
1481                 spin_unlock_bh(&se_tpg->session_lock);
1482                 return;
1483         }
1484         atomic_set(&sess->session_reinstatement, 1);
1485         atomic_set(&sess->session_fall_back_to_erl0, 1);
1486         spin_unlock(&sess->conn_lock);
1487
1488         iscsit_stop_time2retain_timer(sess);
1489         spin_unlock_bh(&se_tpg->session_lock);
1490
1491         iscsit_stop_session(sess, 1, 1);
1492         iscsit_close_session(sess);
1493 }
1494
1495 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1496 {
1497         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1498 }
1499
1500 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1501 {
1502         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1503                                 se_node_acl);
1504         struct se_portal_group *se_tpg = se_acl->se_tpg;
1505         struct iscsi_portal_group *tpg = container_of(se_tpg,
1506                                 struct iscsi_portal_group, tpg_se_tpg);
1507
1508         acl->node_attrib.nacl = acl;
1509         iscsit_set_default_node_attribues(acl, tpg);
1510 }
1511
1512 static int lio_check_stop_free(struct se_cmd *se_cmd)
1513 {
1514         return target_put_sess_cmd(se_cmd);
1515 }
1516
1517 static void lio_release_cmd(struct se_cmd *se_cmd)
1518 {
1519         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1520
1521         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1522         iscsit_release_cmd(cmd);
1523 }
1524
1525 const struct target_core_fabric_ops iscsi_ops = {
1526         .module                         = THIS_MODULE,
1527         .fabric_alias                   = "iscsi",
1528         .fabric_name                    = "iSCSI",
1529         .node_acl_size                  = sizeof(struct iscsi_node_acl),
1530         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1531         .tpg_get_tag                    = lio_tpg_get_tag,
1532         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1533         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1534         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1535         .tpg_check_demo_mode_write_protect =
1536                         lio_tpg_check_demo_mode_write_protect,
1537         .tpg_check_prod_mode_write_protect =
1538                         lio_tpg_check_prod_mode_write_protect,
1539         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1540         .tpg_get_inst_index             = lio_tpg_get_inst_index,
1541         .check_stop_free                = lio_check_stop_free,
1542         .release_cmd                    = lio_release_cmd,
1543         .close_session                  = lio_tpg_close_session,
1544         .sess_get_index                 = lio_sess_get_index,
1545         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
1546         .write_pending                  = lio_write_pending,
1547         .set_default_node_attributes    = lio_set_default_node_attributes,
1548         .get_cmd_state                  = iscsi_get_cmd_state,
1549         .queue_data_in                  = lio_queue_data_in,
1550         .queue_status                   = lio_queue_status,
1551         .queue_tm_rsp                   = lio_queue_tm_rsp,
1552         .aborted_task                   = lio_aborted_task,
1553         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
1554         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
1555         .add_wwn_groups                 = lio_target_add_wwn_groups,
1556         .fabric_make_tpg                = lio_target_tiqn_addtpg,
1557         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
1558         .fabric_make_np                 = lio_target_call_addnptotpg,
1559         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
1560         .fabric_init_nodeacl            = lio_target_init_nodeacl,
1561
1562         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
1563         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
1564         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
1565         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
1566         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
1567         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
1568         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
1569         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
1570         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
1571         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
1572         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
1573
1574         .write_pending_must_be_called   = true,
1575 };