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
to_iscsi_tpg_np(struct config_item * item)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
lio_target_np_driver_show(struct config_item * item,char * page,enum iscsit_transport_type type)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
lio_target_np_driver_store(struct config_item * item,const char * page,size_t count,enum iscsit_transport_type type,const char * mod_name)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
lio_target_np_iser_show(struct config_item * item,char * page)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
lio_target_np_iser_store(struct config_item * item,const char * page,size_t count)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
lio_target_np_cxgbit_show(struct config_item * item,char * page)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
lio_target_np_cxgbit_store(struct config_item * item,const char * page,size_t count)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
lio_target_call_addnptotpg(struct se_portal_group * se_tpg,struct config_group * group,const char * name)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 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
172
173 str = strstr(buf, "[");
174 if (str) {
175 str2 = strstr(str, "]");
176 if (!str2) {
177 pr_err("Unable to locate trailing \"]\""
178 " in IPv6 iSCSI network portal address\n");
179 return ERR_PTR(-EINVAL);
180 }
181
182 ip_str = str + 1; /* Skip over leading "[" */
183 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
184 str2++; /* Skip over the \0 */
185
186 port_str = strstr(str2, ":");
187 if (!port_str) {
188 pr_err("Unable to locate \":port\""
189 " in IPv6 iSCSI network portal address\n");
190 return ERR_PTR(-EINVAL);
191 }
192 *port_str = '\0'; /* Terminate string for IP */
193 port_str++; /* Skip over ":" */
194 } else {
195 ip_str = &buf[0];
196 port_str = strstr(ip_str, ":");
197 if (!port_str) {
198 pr_err("Unable to locate \":port\""
199 " in IPv4 iSCSI network portal address\n");
200 return ERR_PTR(-EINVAL);
201 }
202 *port_str = '\0'; /* Terminate string for IP */
203 port_str++; /* Skip over ":" */
204 }
205
206 ret = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str,
207 port_str, &sockaddr);
208 if (ret) {
209 pr_err("malformed ip/port passed: %s\n", name);
210 return ERR_PTR(ret);
211 }
212
213 tpg = to_iscsi_tpg(se_tpg);
214 ret = iscsit_get_tpg(tpg);
215 if (ret < 0)
216 return ERR_PTR(-EINVAL);
217
218 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
219 " PORTAL: %s\n",
220 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
221 tpg->tpgt, name);
222 /*
223 * Assume ISCSI_TCP by default. Other network portals for other
224 * iSCSI fabrics:
225 *
226 * Traditional iSCSI over SCTP (initial support)
227 * iSER/TCP (TODO, hardware available)
228 * iSER/SCTP (TODO, software emulation with osc-iwarp)
229 * iSER/IB (TODO, hardware available)
230 *
231 * can be enabled with attributes under
232 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
233 *
234 */
235 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
236 ISCSI_TCP);
237 if (IS_ERR(tpg_np)) {
238 iscsit_put_tpg(tpg);
239 return ERR_CAST(tpg_np);
240 }
241 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
242
243 iscsit_put_tpg(tpg);
244 return &tpg_np->se_tpg_np;
245 }
246
lio_target_call_delnpfromtpg(struct se_tpg_np * se_tpg_np)247 static void lio_target_call_delnpfromtpg(
248 struct se_tpg_np *se_tpg_np)
249 {
250 struct iscsi_portal_group *tpg;
251 struct iscsi_tpg_np *tpg_np;
252 struct se_portal_group *se_tpg;
253 int ret;
254
255 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
256 tpg = tpg_np->tpg;
257 ret = iscsit_get_tpg(tpg);
258 if (ret < 0)
259 return;
260
261 se_tpg = &tpg->tpg_se_tpg;
262 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
263 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
264 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
265
266 ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
267 if (ret < 0)
268 goto out;
269
270 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
271 out:
272 iscsit_put_tpg(tpg);
273 }
274
275 /* End items for lio_target_np_cit */
276
277 /* Start items for lio_target_nacl_attrib_cit */
278
279 #define ISCSI_NACL_ATTR(name) \
280 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
281 char *page) \
282 { \
283 struct se_node_acl *se_nacl = attrib_to_nacl(item); \
284 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \
285 return sprintf(page, "%u\n", nacl->node_attrib.name); \
286 } \
287 \
288 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
289 const char *page, size_t count) \
290 { \
291 struct se_node_acl *se_nacl = attrib_to_nacl(item); \
292 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \
293 u32 val; \
294 int ret; \
295 \
296 ret = kstrtou32(page, 0, &val); \
297 if (ret) \
298 return ret; \
299 ret = iscsit_na_##name(nacl, val); \
300 if (ret < 0) \
301 return ret; \
302 \
303 return count; \
304 } \
305 \
306 CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
307
308 ISCSI_NACL_ATTR(dataout_timeout);
309 ISCSI_NACL_ATTR(dataout_timeout_retries);
310 ISCSI_NACL_ATTR(default_erl);
311 ISCSI_NACL_ATTR(nopin_timeout);
312 ISCSI_NACL_ATTR(nopin_response_timeout);
313 ISCSI_NACL_ATTR(random_datain_pdu_offsets);
314 ISCSI_NACL_ATTR(random_datain_seq_offsets);
315 ISCSI_NACL_ATTR(random_r2t_offsets);
316
iscsi_nacl_attrib_authentication_show(struct config_item * item,char * page)317 static ssize_t iscsi_nacl_attrib_authentication_show(struct config_item *item,
318 char *page)
319 {
320 struct se_node_acl *se_nacl = attrib_to_nacl(item);
321 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);
322
323 return sprintf(page, "%d\n", nacl->node_attrib.authentication);
324 }
325
iscsi_nacl_attrib_authentication_store(struct config_item * item,const char * page,size_t count)326 static ssize_t iscsi_nacl_attrib_authentication_store(struct config_item *item,
327 const char *page, size_t count)
328 {
329 struct se_node_acl *se_nacl = attrib_to_nacl(item);
330 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);
331 s32 val;
332 int ret;
333
334 ret = kstrtos32(page, 0, &val);
335 if (ret)
336 return ret;
337 if (val != 0 && val != 1 && val != NA_AUTHENTICATION_INHERITED)
338 return -EINVAL;
339
340 nacl->node_attrib.authentication = val;
341
342 return count;
343 }
344
345 CONFIGFS_ATTR(iscsi_nacl_attrib_, authentication);
346
347 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
348 &iscsi_nacl_attrib_attr_dataout_timeout,
349 &iscsi_nacl_attrib_attr_dataout_timeout_retries,
350 &iscsi_nacl_attrib_attr_default_erl,
351 &iscsi_nacl_attrib_attr_nopin_timeout,
352 &iscsi_nacl_attrib_attr_nopin_response_timeout,
353 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
354 &iscsi_nacl_attrib_attr_random_datain_seq_offsets,
355 &iscsi_nacl_attrib_attr_random_r2t_offsets,
356 &iscsi_nacl_attrib_attr_authentication,
357 NULL,
358 };
359
360 /* End items for lio_target_nacl_attrib_cit */
361
362 /* Start items for lio_target_nacl_auth_cit */
363
364 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \
365 static ssize_t __iscsi_##prefix##_##name##_show( \
366 struct iscsi_node_acl *nacl, \
367 char *page) \
368 { \
369 struct iscsi_node_auth *auth = &nacl->node_auth; \
370 \
371 if (!capable(CAP_SYS_ADMIN)) \
372 return -EPERM; \
373 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
374 } \
375 \
376 static ssize_t __iscsi_##prefix##_##name##_store( \
377 struct iscsi_node_acl *nacl, \
378 const char *page, \
379 size_t count) \
380 { \
381 struct iscsi_node_auth *auth = &nacl->node_auth; \
382 \
383 if (!capable(CAP_SYS_ADMIN)) \
384 return -EPERM; \
385 if (count >= sizeof(auth->name)) \
386 return -EINVAL; \
387 snprintf(auth->name, sizeof(auth->name), "%s", page); \
388 if (!strncmp("NULL", auth->name, 4)) \
389 auth->naf_flags &= ~flags; \
390 else \
391 auth->naf_flags |= flags; \
392 \
393 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
394 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
395 auth->authenticate_target = 1; \
396 else \
397 auth->authenticate_target = 0; \
398 \
399 return count; \
400 }
401
402 #define DEF_NACL_AUTH_STR(name, flags) \
403 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
404 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
405 char *page) \
406 { \
407 struct se_node_acl *nacl = auth_to_nacl(item); \
408 return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \
409 } \
410 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
411 const char *page, size_t count) \
412 { \
413 struct se_node_acl *nacl = auth_to_nacl(item); \
414 return __iscsi_nacl_auth_##name##_store(to_iscsi_nacl(nacl), \
415 page, count); \
416 } \
417 \
418 CONFIGFS_ATTR(iscsi_nacl_auth_, name)
419
420 /*
421 * One-way authentication userid
422 */
423 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
424 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
425 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
426 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
427
428 #define __DEF_NACL_AUTH_INT(prefix, name) \
429 static ssize_t __iscsi_##prefix##_##name##_show( \
430 struct iscsi_node_acl *nacl, \
431 char *page) \
432 { \
433 struct iscsi_node_auth *auth = &nacl->node_auth; \
434 \
435 if (!capable(CAP_SYS_ADMIN)) \
436 return -EPERM; \
437 \
438 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
439 }
440
441 #define DEF_NACL_AUTH_INT(name) \
442 __DEF_NACL_AUTH_INT(nacl_auth, name) \
443 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
444 char *page) \
445 { \
446 struct se_node_acl *nacl = auth_to_nacl(item); \
447 return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \
448 } \
449 \
450 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
451
452 DEF_NACL_AUTH_INT(authenticate_target);
453
454 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
455 &iscsi_nacl_auth_attr_userid,
456 &iscsi_nacl_auth_attr_password,
457 &iscsi_nacl_auth_attr_authenticate_target,
458 &iscsi_nacl_auth_attr_userid_mutual,
459 &iscsi_nacl_auth_attr_password_mutual,
460 NULL,
461 };
462
463 /* End items for lio_target_nacl_auth_cit */
464
465 /* Start items for lio_target_nacl_param_cit */
466
467 #define ISCSI_NACL_PARAM(name) \
468 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
469 char *page) \
470 { \
471 struct se_node_acl *se_nacl = param_to_nacl(item); \
472 struct iscsit_session *sess; \
473 struct se_session *se_sess; \
474 ssize_t rb; \
475 \
476 spin_lock_bh(&se_nacl->nacl_sess_lock); \
477 se_sess = se_nacl->nacl_sess; \
478 if (!se_sess) { \
479 rb = snprintf(page, PAGE_SIZE, \
480 "No Active iSCSI Session\n"); \
481 } else { \
482 sess = se_sess->fabric_sess_ptr; \
483 rb = snprintf(page, PAGE_SIZE, "%u\n", \
484 (u32)sess->sess_ops->name); \
485 } \
486 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
487 \
488 return rb; \
489 } \
490 \
491 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
492
493 ISCSI_NACL_PARAM(MaxConnections);
494 ISCSI_NACL_PARAM(InitialR2T);
495 ISCSI_NACL_PARAM(ImmediateData);
496 ISCSI_NACL_PARAM(MaxBurstLength);
497 ISCSI_NACL_PARAM(FirstBurstLength);
498 ISCSI_NACL_PARAM(DefaultTime2Wait);
499 ISCSI_NACL_PARAM(DefaultTime2Retain);
500 ISCSI_NACL_PARAM(MaxOutstandingR2T);
501 ISCSI_NACL_PARAM(DataPDUInOrder);
502 ISCSI_NACL_PARAM(DataSequenceInOrder);
503 ISCSI_NACL_PARAM(ErrorRecoveryLevel);
504
505 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
506 &iscsi_nacl_param_attr_MaxConnections,
507 &iscsi_nacl_param_attr_InitialR2T,
508 &iscsi_nacl_param_attr_ImmediateData,
509 &iscsi_nacl_param_attr_MaxBurstLength,
510 &iscsi_nacl_param_attr_FirstBurstLength,
511 &iscsi_nacl_param_attr_DefaultTime2Wait,
512 &iscsi_nacl_param_attr_DefaultTime2Retain,
513 &iscsi_nacl_param_attr_MaxOutstandingR2T,
514 &iscsi_nacl_param_attr_DataPDUInOrder,
515 &iscsi_nacl_param_attr_DataSequenceInOrder,
516 &iscsi_nacl_param_attr_ErrorRecoveryLevel,
517 NULL,
518 };
519
520 /* End items for lio_target_nacl_param_cit */
521
522 /* Start items for lio_target_acl_cit */
523
lio_target_nacl_info_show(struct config_item * item,char * page)524 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
525 {
526 struct se_node_acl *se_nacl = acl_to_nacl(item);
527 struct iscsit_session *sess;
528 struct iscsit_conn *conn;
529 struct se_session *se_sess;
530 ssize_t rb = 0;
531 u32 max_cmd_sn;
532
533 spin_lock_bh(&se_nacl->nacl_sess_lock);
534 se_sess = se_nacl->nacl_sess;
535 if (!se_sess) {
536 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
537 " Endpoint: %s\n", se_nacl->initiatorname);
538 } else {
539 sess = se_sess->fabric_sess_ptr;
540
541 rb += sprintf(page+rb, "InitiatorName: %s\n",
542 sess->sess_ops->InitiatorName);
543 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
544 sess->sess_ops->InitiatorAlias);
545
546 rb += sprintf(page+rb,
547 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",
548 sess->sid, sess->isid, sess->tsih);
549 rb += sprintf(page+rb, "SessionType: %s\n",
550 (sess->sess_ops->SessionType) ?
551 "Discovery" : "Normal");
552 rb += sprintf(page+rb, "Session State: ");
553 switch (sess->session_state) {
554 case TARG_SESS_STATE_FREE:
555 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
556 break;
557 case TARG_SESS_STATE_ACTIVE:
558 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
559 break;
560 case TARG_SESS_STATE_LOGGED_IN:
561 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
562 break;
563 case TARG_SESS_STATE_FAILED:
564 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
565 break;
566 case TARG_SESS_STATE_IN_CONTINUE:
567 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
568 break;
569 default:
570 rb += sprintf(page+rb, "ERROR: Unknown Session"
571 " State!\n");
572 break;
573 }
574
575 rb += sprintf(page+rb, "---------------------[iSCSI Session"
576 " Values]-----------------------\n");
577 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
578 " : MaxCmdSN : ITT : TTT\n");
579 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
580 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
581 " 0x%08x 0x%08x\n",
582 sess->cmdsn_window,
583 (max_cmd_sn - sess->exp_cmd_sn) + 1,
584 sess->exp_cmd_sn, max_cmd_sn,
585 sess->init_task_tag, sess->targ_xfer_tag);
586 rb += sprintf(page+rb, "----------------------[iSCSI"
587 " Connections]-------------------------\n");
588
589 spin_lock(&sess->conn_lock);
590 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
591 rb += sprintf(page+rb, "CID: %hu Connection"
592 " State: ", conn->cid);
593 switch (conn->conn_state) {
594 case TARG_CONN_STATE_FREE:
595 rb += sprintf(page+rb,
596 "TARG_CONN_STATE_FREE\n");
597 break;
598 case TARG_CONN_STATE_XPT_UP:
599 rb += sprintf(page+rb,
600 "TARG_CONN_STATE_XPT_UP\n");
601 break;
602 case TARG_CONN_STATE_IN_LOGIN:
603 rb += sprintf(page+rb,
604 "TARG_CONN_STATE_IN_LOGIN\n");
605 break;
606 case TARG_CONN_STATE_LOGGED_IN:
607 rb += sprintf(page+rb,
608 "TARG_CONN_STATE_LOGGED_IN\n");
609 break;
610 case TARG_CONN_STATE_IN_LOGOUT:
611 rb += sprintf(page+rb,
612 "TARG_CONN_STATE_IN_LOGOUT\n");
613 break;
614 case TARG_CONN_STATE_LOGOUT_REQUESTED:
615 rb += sprintf(page+rb,
616 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
617 break;
618 case TARG_CONN_STATE_CLEANUP_WAIT:
619 rb += sprintf(page+rb,
620 "TARG_CONN_STATE_CLEANUP_WAIT\n");
621 break;
622 default:
623 rb += sprintf(page+rb,
624 "ERROR: Unknown Connection State!\n");
625 break;
626 }
627
628 rb += sprintf(page+rb, " Address %pISc %s", &conn->login_sockaddr,
629 (conn->network_transport == ISCSI_TCP) ?
630 "TCP" : "SCTP");
631 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
632 conn->stat_sn);
633 }
634 spin_unlock(&sess->conn_lock);
635 }
636 spin_unlock_bh(&se_nacl->nacl_sess_lock);
637
638 return rb;
639 }
640
lio_target_nacl_cmdsn_depth_show(struct config_item * item,char * page)641 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
642 char *page)
643 {
644 return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth);
645 }
646
lio_target_nacl_cmdsn_depth_store(struct config_item * item,const char * page,size_t count)647 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
648 const char *page, size_t count)
649 {
650 struct se_node_acl *se_nacl = acl_to_nacl(item);
651 struct se_portal_group *se_tpg = se_nacl->se_tpg;
652 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
653 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
654 u32 cmdsn_depth = 0;
655 int ret;
656
657 ret = kstrtou32(page, 0, &cmdsn_depth);
658 if (ret)
659 return ret;
660 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
661 pr_err("Passed cmdsn_depth: %u exceeds"
662 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
663 TA_DEFAULT_CMDSN_DEPTH_MAX);
664 return -EINVAL;
665 }
666 acl_ci = &se_nacl->acl_group.cg_item;
667 if (!acl_ci) {
668 pr_err("Unable to locatel acl_ci\n");
669 return -EINVAL;
670 }
671 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
672 if (!tpg_ci) {
673 pr_err("Unable to locate tpg_ci\n");
674 return -EINVAL;
675 }
676 wwn_ci = &tpg_ci->ci_group->cg_item;
677 if (!wwn_ci) {
678 pr_err("Unable to locate config_item wwn_ci\n");
679 return -EINVAL;
680 }
681
682 if (iscsit_get_tpg(tpg) < 0)
683 return -EINVAL;
684
685 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);
686
687 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
688 "InitiatorName: %s\n", config_item_name(wwn_ci),
689 config_item_name(tpg_ci), cmdsn_depth,
690 config_item_name(acl_ci));
691
692 iscsit_put_tpg(tpg);
693 return (!ret) ? count : (ssize_t)ret;
694 }
695
lio_target_nacl_tag_show(struct config_item * item,char * page)696 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
697 {
698 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
699 }
700
lio_target_nacl_tag_store(struct config_item * item,const char * page,size_t count)701 static ssize_t lio_target_nacl_tag_store(struct config_item *item,
702 const char *page, size_t count)
703 {
704 struct se_node_acl *se_nacl = acl_to_nacl(item);
705 int ret;
706
707 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
708
709 if (ret < 0)
710 return ret;
711 return count;
712 }
713
714 CONFIGFS_ATTR_RO(lio_target_nacl_, info);
715 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
716 CONFIGFS_ATTR(lio_target_nacl_, tag);
717
718 static struct configfs_attribute *lio_target_initiator_attrs[] = {
719 &lio_target_nacl_attr_info,
720 &lio_target_nacl_attr_cmdsn_depth,
721 &lio_target_nacl_attr_tag,
722 NULL,
723 };
724
lio_target_init_nodeacl(struct se_node_acl * se_nacl,const char * name)725 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
726 const char *name)
727 {
728 struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl);
729
730 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
731 "iscsi_sess_stats", &iscsi_stat_sess_cit);
732 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
733 &se_nacl->acl_fabric_stat_group);
734 return 0;
735 }
736
737 /* End items for lio_target_acl_cit */
738
739 /* Start items for lio_target_tpg_attrib_cit */
740
741 #define DEF_TPG_ATTRIB(name) \
742 \
743 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
744 char *page) \
745 { \
746 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
747 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
748 ssize_t rb; \
749 \
750 if (iscsit_get_tpg(tpg) < 0) \
751 return -EINVAL; \
752 \
753 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
754 iscsit_put_tpg(tpg); \
755 return rb; \
756 } \
757 \
758 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
759 const char *page, size_t count) \
760 { \
761 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
762 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
763 u32 val; \
764 int ret; \
765 \
766 if (iscsit_get_tpg(tpg) < 0) \
767 return -EINVAL; \
768 \
769 ret = kstrtou32(page, 0, &val); \
770 if (ret) \
771 goto out; \
772 ret = iscsit_ta_##name(tpg, val); \
773 if (ret < 0) \
774 goto out; \
775 \
776 iscsit_put_tpg(tpg); \
777 return count; \
778 out: \
779 iscsit_put_tpg(tpg); \
780 return ret; \
781 } \
782 CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
783
784 DEF_TPG_ATTRIB(authentication);
785 DEF_TPG_ATTRIB(login_timeout);
786 DEF_TPG_ATTRIB(netif_timeout);
787 DEF_TPG_ATTRIB(generate_node_acls);
788 DEF_TPG_ATTRIB(default_cmdsn_depth);
789 DEF_TPG_ATTRIB(cache_dynamic_acls);
790 DEF_TPG_ATTRIB(demo_mode_write_protect);
791 DEF_TPG_ATTRIB(prod_mode_write_protect);
792 DEF_TPG_ATTRIB(demo_mode_discovery);
793 DEF_TPG_ATTRIB(default_erl);
794 DEF_TPG_ATTRIB(t10_pi);
795 DEF_TPG_ATTRIB(fabric_prot_type);
796 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
797 DEF_TPG_ATTRIB(login_keys_workaround);
798
799 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
800 &iscsi_tpg_attrib_attr_authentication,
801 &iscsi_tpg_attrib_attr_login_timeout,
802 &iscsi_tpg_attrib_attr_netif_timeout,
803 &iscsi_tpg_attrib_attr_generate_node_acls,
804 &iscsi_tpg_attrib_attr_default_cmdsn_depth,
805 &iscsi_tpg_attrib_attr_cache_dynamic_acls,
806 &iscsi_tpg_attrib_attr_demo_mode_write_protect,
807 &iscsi_tpg_attrib_attr_prod_mode_write_protect,
808 &iscsi_tpg_attrib_attr_demo_mode_discovery,
809 &iscsi_tpg_attrib_attr_default_erl,
810 &iscsi_tpg_attrib_attr_t10_pi,
811 &iscsi_tpg_attrib_attr_fabric_prot_type,
812 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
813 &iscsi_tpg_attrib_attr_login_keys_workaround,
814 NULL,
815 };
816
817 /* End items for lio_target_tpg_attrib_cit */
818
819 /* Start items for lio_target_tpg_auth_cit */
820
821 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
822 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
823 char *page) \
824 { \
825 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
826 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
827 \
828 if (!capable(CAP_SYS_ADMIN)) \
829 return -EPERM; \
830 \
831 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
832 } \
833 \
834 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
835 const char *page, size_t count) \
836 { \
837 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
838 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
839 \
840 if (!capable(CAP_SYS_ADMIN)) \
841 return -EPERM; \
842 \
843 snprintf(auth->name, sizeof(auth->name), "%s", page); \
844 if (!(strncmp("NULL", auth->name, 4))) \
845 auth->naf_flags &= ~flags; \
846 else \
847 auth->naf_flags |= flags; \
848 \
849 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
850 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
851 auth->authenticate_target = 1; \
852 else \
853 auth->authenticate_target = 0; \
854 \
855 return count; \
856 }
857
858 #define DEF_TPG_AUTH_STR(name, flags) \
859 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
860 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
861 char *page) \
862 { \
863 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
864 } \
865 \
866 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \
867 const char *page, size_t count) \
868 { \
869 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
870 } \
871 \
872 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
873
874
875 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
876 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
877 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
878 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
879
880 #define __DEF_TPG_AUTH_INT(prefix, name) \
881 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
882 char *page) \
883 { \
884 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
885 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
886 \
887 if (!capable(CAP_SYS_ADMIN)) \
888 return -EPERM; \
889 \
890 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
891 }
892
893 #define DEF_TPG_AUTH_INT(name) \
894 __DEF_TPG_AUTH_INT(tpg_auth, name) \
895 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
896 char *page) \
897 { \
898 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
899 } \
900 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
901
902 DEF_TPG_AUTH_INT(authenticate_target);
903
904 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
905 &iscsi_tpg_auth_attr_userid,
906 &iscsi_tpg_auth_attr_password,
907 &iscsi_tpg_auth_attr_authenticate_target,
908 &iscsi_tpg_auth_attr_userid_mutual,
909 &iscsi_tpg_auth_attr_password_mutual,
910 NULL,
911 };
912
913 /* End items for lio_target_tpg_auth_cit */
914
915 /* Start items for lio_target_tpg_param_cit */
916
917 #define DEF_TPG_PARAM(name) \
918 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
919 char *page) \
920 { \
921 struct se_portal_group *se_tpg = param_to_tpg(item); \
922 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
923 struct iscsi_param *param; \
924 ssize_t rb; \
925 \
926 if (iscsit_get_tpg(tpg) < 0) \
927 return -EINVAL; \
928 \
929 param = iscsi_find_param_from_key(__stringify(name), \
930 tpg->param_list); \
931 if (!param) { \
932 iscsit_put_tpg(tpg); \
933 return -EINVAL; \
934 } \
935 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
936 \
937 iscsit_put_tpg(tpg); \
938 return rb; \
939 } \
940 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
941 const char *page, size_t count) \
942 { \
943 struct se_portal_group *se_tpg = param_to_tpg(item); \
944 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
945 char *buf; \
946 int ret, len; \
947 \
948 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
949 if (!buf) \
950 return -ENOMEM; \
951 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
952 if (isspace(buf[len-1])) \
953 buf[len-1] = '\0'; /* Kill newline */ \
954 \
955 if (iscsit_get_tpg(tpg) < 0) { \
956 kfree(buf); \
957 return -EINVAL; \
958 } \
959 \
960 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
961 if (ret < 0) \
962 goto out; \
963 \
964 kfree(buf); \
965 iscsit_put_tpg(tpg); \
966 return count; \
967 out: \
968 kfree(buf); \
969 iscsit_put_tpg(tpg); \
970 return -EINVAL; \
971 } \
972 CONFIGFS_ATTR(iscsi_tpg_param_, name)
973
974 DEF_TPG_PARAM(AuthMethod);
975 DEF_TPG_PARAM(HeaderDigest);
976 DEF_TPG_PARAM(DataDigest);
977 DEF_TPG_PARAM(MaxConnections);
978 DEF_TPG_PARAM(TargetAlias);
979 DEF_TPG_PARAM(InitialR2T);
980 DEF_TPG_PARAM(ImmediateData);
981 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
982 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
983 DEF_TPG_PARAM(MaxBurstLength);
984 DEF_TPG_PARAM(FirstBurstLength);
985 DEF_TPG_PARAM(DefaultTime2Wait);
986 DEF_TPG_PARAM(DefaultTime2Retain);
987 DEF_TPG_PARAM(MaxOutstandingR2T);
988 DEF_TPG_PARAM(DataPDUInOrder);
989 DEF_TPG_PARAM(DataSequenceInOrder);
990 DEF_TPG_PARAM(ErrorRecoveryLevel);
991 DEF_TPG_PARAM(IFMarker);
992 DEF_TPG_PARAM(OFMarker);
993 DEF_TPG_PARAM(IFMarkInt);
994 DEF_TPG_PARAM(OFMarkInt);
995
996 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
997 &iscsi_tpg_param_attr_AuthMethod,
998 &iscsi_tpg_param_attr_HeaderDigest,
999 &iscsi_tpg_param_attr_DataDigest,
1000 &iscsi_tpg_param_attr_MaxConnections,
1001 &iscsi_tpg_param_attr_TargetAlias,
1002 &iscsi_tpg_param_attr_InitialR2T,
1003 &iscsi_tpg_param_attr_ImmediateData,
1004 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
1005 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
1006 &iscsi_tpg_param_attr_MaxBurstLength,
1007 &iscsi_tpg_param_attr_FirstBurstLength,
1008 &iscsi_tpg_param_attr_DefaultTime2Wait,
1009 &iscsi_tpg_param_attr_DefaultTime2Retain,
1010 &iscsi_tpg_param_attr_MaxOutstandingR2T,
1011 &iscsi_tpg_param_attr_DataPDUInOrder,
1012 &iscsi_tpg_param_attr_DataSequenceInOrder,
1013 &iscsi_tpg_param_attr_ErrorRecoveryLevel,
1014 &iscsi_tpg_param_attr_IFMarker,
1015 &iscsi_tpg_param_attr_OFMarker,
1016 &iscsi_tpg_param_attr_IFMarkInt,
1017 &iscsi_tpg_param_attr_OFMarkInt,
1018 NULL,
1019 };
1020
1021 /* End items for lio_target_tpg_param_cit */
1022
1023 /* Start items for lio_target_tpg_cit */
1024
lio_target_tpg_dynamic_sessions_show(struct config_item * item,char * page)1025 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1026 char *page)
1027 {
1028 return target_show_dynamic_sessions(to_tpg(item), page);
1029 }
1030
1031 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1032
1033 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1034 &lio_target_tpg_attr_dynamic_sessions,
1035 NULL,
1036 };
1037
1038 /* End items for lio_target_tpg_cit */
1039
1040 /* Start items for lio_target_tiqn_cit */
1041
lio_target_tiqn_addtpg(struct se_wwn * wwn,const char * name)1042 static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,
1043 const char *name)
1044 {
1045 struct iscsi_portal_group *tpg;
1046 struct iscsi_tiqn *tiqn;
1047 char *tpgt_str;
1048 int ret;
1049 u16 tpgt;
1050
1051 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1052 /*
1053 * Only tpgt_# directory groups can be created below
1054 * target/iscsi/iqn.superturodiskarry/
1055 */
1056 tpgt_str = strstr(name, "tpgt_");
1057 if (!tpgt_str) {
1058 pr_err("Unable to locate \"tpgt_#\" directory"
1059 " group\n");
1060 return NULL;
1061 }
1062 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1063 ret = kstrtou16(tpgt_str, 0, &tpgt);
1064 if (ret)
1065 return NULL;
1066
1067 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1068 if (!tpg)
1069 return NULL;
1070
1071 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1072 if (ret < 0)
1073 goto free_out;
1074
1075 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1076 if (ret != 0)
1077 goto out;
1078
1079 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1080 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1081 name);
1082 return &tpg->tpg_se_tpg;
1083 out:
1084 core_tpg_deregister(&tpg->tpg_se_tpg);
1085 free_out:
1086 kfree(tpg);
1087 return NULL;
1088 }
1089
lio_target_tiqn_enabletpg(struct se_portal_group * se_tpg,bool enable)1090 static int lio_target_tiqn_enabletpg(struct se_portal_group *se_tpg,
1091 bool enable)
1092 {
1093 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
1094 int ret;
1095
1096 ret = iscsit_get_tpg(tpg);
1097 if (ret < 0)
1098 return -EINVAL;
1099
1100 if (enable) {
1101 ret = iscsit_tpg_enable_portal_group(tpg);
1102 if (ret < 0)
1103 goto out;
1104 } else {
1105 /*
1106 * iscsit_tpg_disable_portal_group() assumes force=1
1107 */
1108 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1109 if (ret < 0)
1110 goto out;
1111 }
1112
1113 iscsit_put_tpg(tpg);
1114 return 0;
1115 out:
1116 iscsit_put_tpg(tpg);
1117 return -EINVAL;
1118 }
1119
lio_target_tiqn_deltpg(struct se_portal_group * se_tpg)1120 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1121 {
1122 struct iscsi_portal_group *tpg;
1123 struct iscsi_tiqn *tiqn;
1124
1125 tpg = to_iscsi_tpg(se_tpg);
1126 tiqn = tpg->tpg_tiqn;
1127 /*
1128 * iscsit_tpg_del_portal_group() assumes force=1
1129 */
1130 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1131 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1132 }
1133
1134 /* End items for lio_target_tiqn_cit */
1135
1136 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1137
lio_target_wwn_lio_version_show(struct config_item * item,char * page)1138 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1139 char *page)
1140 {
1141 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1142 }
1143
1144 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1145
lio_target_wwn_cpus_allowed_list_show(struct config_item * item,char * page)1146 static ssize_t lio_target_wwn_cpus_allowed_list_show(
1147 struct config_item *item, char *page)
1148 {
1149 return sprintf(page, "%*pbl\n",
1150 cpumask_pr_args(iscsit_global->allowed_cpumask));
1151 }
1152
lio_target_wwn_cpus_allowed_list_store(struct config_item * item,const char * page,size_t count)1153 static ssize_t lio_target_wwn_cpus_allowed_list_store(
1154 struct config_item *item, const char *page, size_t count)
1155 {
1156 int ret = -ENOMEM;
1157 char *orig;
1158 cpumask_var_t new_allowed_cpumask;
1159
1160 if (!zalloc_cpumask_var(&new_allowed_cpumask, GFP_KERNEL))
1161 goto out;
1162
1163 orig = kstrdup(page, GFP_KERNEL);
1164 if (!orig)
1165 goto out_free_cpumask;
1166
1167 ret = cpulist_parse(orig, new_allowed_cpumask);
1168 if (!ret)
1169 cpumask_copy(iscsit_global->allowed_cpumask,
1170 new_allowed_cpumask);
1171
1172 kfree(orig);
1173 out_free_cpumask:
1174 free_cpumask_var(new_allowed_cpumask);
1175 out:
1176 return ret ? ret : count;
1177 }
1178
1179 CONFIGFS_ATTR(lio_target_wwn_, cpus_allowed_list);
1180
1181 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1182 &lio_target_wwn_attr_lio_version,
1183 &lio_target_wwn_attr_cpus_allowed_list,
1184 NULL,
1185 };
1186
lio_target_call_coreaddtiqn(struct target_fabric_configfs * tf,struct config_group * group,const char * name)1187 static struct se_wwn *lio_target_call_coreaddtiqn(
1188 struct target_fabric_configfs *tf,
1189 struct config_group *group,
1190 const char *name)
1191 {
1192 struct iscsi_tiqn *tiqn;
1193
1194 tiqn = iscsit_add_tiqn((unsigned char *)name);
1195 if (IS_ERR(tiqn))
1196 return ERR_CAST(tiqn);
1197
1198 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1199 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1200 " %s\n", name);
1201 return &tiqn->tiqn_wwn;
1202 }
1203
lio_target_add_wwn_groups(struct se_wwn * wwn)1204 static void lio_target_add_wwn_groups(struct se_wwn *wwn)
1205 {
1206 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1207
1208 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1209 "iscsi_instance", &iscsi_stat_instance_cit);
1210 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1211 &tiqn->tiqn_wwn.fabric_stat_group);
1212
1213 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1214 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1215 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1216 &tiqn->tiqn_wwn.fabric_stat_group);
1217
1218 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1219 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1220 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1221 &tiqn->tiqn_wwn.fabric_stat_group);
1222
1223 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1224 "iscsi_login_stats", &iscsi_stat_login_cit);
1225 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1226 &tiqn->tiqn_wwn.fabric_stat_group);
1227
1228 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1229 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1230 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1231 &tiqn->tiqn_wwn.fabric_stat_group);
1232 }
1233
lio_target_call_coredeltiqn(struct se_wwn * wwn)1234 static void lio_target_call_coredeltiqn(
1235 struct se_wwn *wwn)
1236 {
1237 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1238
1239 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1240 tiqn->tiqn);
1241 iscsit_del_tiqn(tiqn);
1242 }
1243
1244 /* End LIO-Target TIQN struct contig_lio_target_cit */
1245
1246 /* Start lio_target_discovery_auth_cit */
1247
1248 #define DEF_DISC_AUTH_STR(name, flags) \
1249 __DEF_NACL_AUTH_STR(disc, name, flags) \
1250 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1251 { \
1252 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1253 page); \
1254 } \
1255 static ssize_t iscsi_disc_##name##_store(struct config_item *item, \
1256 const char *page, size_t count) \
1257 { \
1258 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \
1259 page, count); \
1260 \
1261 } \
1262 CONFIGFS_ATTR(iscsi_disc_, name)
1263
1264 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1265 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1266 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1267 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1268
1269 #define DEF_DISC_AUTH_INT(name) \
1270 __DEF_NACL_AUTH_INT(disc, name) \
1271 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1272 { \
1273 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1274 page); \
1275 } \
1276 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1277
1278 DEF_DISC_AUTH_INT(authenticate_target);
1279
1280
iscsi_disc_enforce_discovery_auth_show(struct config_item * item,char * page)1281 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1282 char *page)
1283 {
1284 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1285
1286 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1287 }
1288
iscsi_disc_enforce_discovery_auth_store(struct config_item * item,const char * page,size_t count)1289 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1290 const char *page, size_t count)
1291 {
1292 struct iscsi_param *param;
1293 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1294 u32 op;
1295 int err;
1296
1297 err = kstrtou32(page, 0, &op);
1298 if (err)
1299 return -EINVAL;
1300 if ((op != 1) && (op != 0)) {
1301 pr_err("Illegal value for enforce_discovery_auth:"
1302 " %u\n", op);
1303 return -EINVAL;
1304 }
1305
1306 if (!discovery_tpg) {
1307 pr_err("iscsit_global->discovery_tpg is NULL\n");
1308 return -EINVAL;
1309 }
1310
1311 param = iscsi_find_param_from_key(AUTHMETHOD,
1312 discovery_tpg->param_list);
1313 if (!param)
1314 return -EINVAL;
1315
1316 if (op) {
1317 /*
1318 * Reset the AuthMethod key to CHAP.
1319 */
1320 if (iscsi_update_param_value(param, CHAP) < 0)
1321 return -EINVAL;
1322
1323 discovery_tpg->tpg_attrib.authentication = 1;
1324 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1325 pr_debug("LIO-CORE[0] Successfully enabled"
1326 " authentication enforcement for iSCSI"
1327 " Discovery TPG\n");
1328 } else {
1329 /*
1330 * Reset the AuthMethod key to CHAP,None
1331 */
1332 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1333 return -EINVAL;
1334
1335 discovery_tpg->tpg_attrib.authentication = 0;
1336 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1337 pr_debug("LIO-CORE[0] Successfully disabled"
1338 " authentication enforcement for iSCSI"
1339 " Discovery TPG\n");
1340 }
1341
1342 return count;
1343 }
1344
1345 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1346
1347 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1348 &iscsi_disc_attr_userid,
1349 &iscsi_disc_attr_password,
1350 &iscsi_disc_attr_authenticate_target,
1351 &iscsi_disc_attr_userid_mutual,
1352 &iscsi_disc_attr_password_mutual,
1353 &iscsi_disc_attr_enforce_discovery_auth,
1354 NULL,
1355 };
1356
1357 /* End lio_target_discovery_auth_cit */
1358
1359 /* Start functions for target_core_fabric_ops */
1360
iscsi_get_cmd_state(struct se_cmd * se_cmd)1361 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1362 {
1363 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1364
1365 return cmd->i_state;
1366 }
1367
lio_sess_get_index(struct se_session * se_sess)1368 static u32 lio_sess_get_index(struct se_session *se_sess)
1369 {
1370 struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1371
1372 return sess->session_index;
1373 }
1374
lio_sess_get_initiator_sid(struct se_session * se_sess,unsigned char * buf,u32 size)1375 static u32 lio_sess_get_initiator_sid(
1376 struct se_session *se_sess,
1377 unsigned char *buf,
1378 u32 size)
1379 {
1380 struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1381 /*
1382 * iSCSI Initiator Session Identifier from RFC-3720.
1383 */
1384 return snprintf(buf, size, "%6phN", sess->isid);
1385 }
1386
lio_queue_data_in(struct se_cmd * se_cmd)1387 static int lio_queue_data_in(struct se_cmd *se_cmd)
1388 {
1389 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1390 struct iscsit_conn *conn = cmd->conn;
1391
1392 cmd->i_state = ISTATE_SEND_DATAIN;
1393 return conn->conn_transport->iscsit_queue_data_in(conn, cmd);
1394 }
1395
lio_write_pending(struct se_cmd * se_cmd)1396 static int lio_write_pending(struct se_cmd *se_cmd)
1397 {
1398 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1399 struct iscsit_conn *conn = cmd->conn;
1400
1401 if (!cmd->immediate_data && !cmd->unsolicited_data)
1402 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1403
1404 return 0;
1405 }
1406
lio_queue_status(struct se_cmd * se_cmd)1407 static int lio_queue_status(struct se_cmd *se_cmd)
1408 {
1409 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1410 struct iscsit_conn *conn = cmd->conn;
1411
1412 cmd->i_state = ISTATE_SEND_STATUS;
1413
1414 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1415 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
1416 }
1417 return conn->conn_transport->iscsit_queue_status(conn, cmd);
1418 }
1419
lio_queue_tm_rsp(struct se_cmd * se_cmd)1420 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1421 {
1422 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1423
1424 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1425 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1426 }
1427
lio_aborted_task(struct se_cmd * se_cmd)1428 static void lio_aborted_task(struct se_cmd *se_cmd)
1429 {
1430 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1431
1432 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1433 }
1434
lio_tpg_get_endpoint_wwn(struct se_portal_group * se_tpg)1435 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1436 {
1437 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1438 }
1439
lio_tpg_get_tag(struct se_portal_group * se_tpg)1440 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1441 {
1442 return to_iscsi_tpg(se_tpg)->tpgt;
1443 }
1444
lio_tpg_get_default_depth(struct se_portal_group * se_tpg)1445 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1446 {
1447 return to_iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1448 }
1449
lio_tpg_check_demo_mode(struct se_portal_group * se_tpg)1450 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1451 {
1452 return to_iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1453 }
1454
lio_tpg_check_demo_mode_cache(struct se_portal_group * se_tpg)1455 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1456 {
1457 return to_iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1458 }
1459
lio_tpg_check_demo_mode_write_protect(struct se_portal_group * se_tpg)1460 static int lio_tpg_check_demo_mode_write_protect(
1461 struct se_portal_group *se_tpg)
1462 {
1463 return to_iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1464 }
1465
lio_tpg_check_prod_mode_write_protect(struct se_portal_group * se_tpg)1466 static int lio_tpg_check_prod_mode_write_protect(
1467 struct se_portal_group *se_tpg)
1468 {
1469 return to_iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1470 }
1471
lio_tpg_check_prot_fabric_only(struct se_portal_group * se_tpg)1472 static int lio_tpg_check_prot_fabric_only(
1473 struct se_portal_group *se_tpg)
1474 {
1475 /*
1476 * Only report fabric_prot_type if t10_pi has also been enabled
1477 * for incoming ib_isert sessions.
1478 */
1479 if (!to_iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1480 return 0;
1481 return to_iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1482 }
1483
1484 /*
1485 * This function calls iscsit_inc_session_usage_count() on the
1486 * struct iscsit_session in question.
1487 */
lio_tpg_close_session(struct se_session * se_sess)1488 static void lio_tpg_close_session(struct se_session *se_sess)
1489 {
1490 struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1491 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
1492
1493 spin_lock_bh(&se_tpg->session_lock);
1494 spin_lock(&sess->conn_lock);
1495 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1496 atomic_read(&sess->session_logout) ||
1497 atomic_read(&sess->session_close) ||
1498 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1499 spin_unlock(&sess->conn_lock);
1500 spin_unlock_bh(&se_tpg->session_lock);
1501 return;
1502 }
1503 iscsit_inc_session_usage_count(sess);
1504 atomic_set(&sess->session_reinstatement, 1);
1505 atomic_set(&sess->session_fall_back_to_erl0, 1);
1506 atomic_set(&sess->session_close, 1);
1507 spin_unlock(&sess->conn_lock);
1508
1509 iscsit_stop_time2retain_timer(sess);
1510 spin_unlock_bh(&se_tpg->session_lock);
1511
1512 iscsit_stop_session(sess, 1, 1);
1513 iscsit_dec_session_usage_count(sess);
1514 }
1515
lio_tpg_get_inst_index(struct se_portal_group * se_tpg)1516 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1517 {
1518 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1519 }
1520
lio_set_default_node_attributes(struct se_node_acl * se_acl)1521 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1522 {
1523 struct iscsi_node_acl *acl = to_iscsi_nacl(se_acl);
1524 struct se_portal_group *se_tpg = se_acl->se_tpg;
1525 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
1526
1527 acl->node_attrib.nacl = acl;
1528 iscsit_set_default_node_attribues(acl, tpg);
1529 }
1530
lio_check_stop_free(struct se_cmd * se_cmd)1531 static int lio_check_stop_free(struct se_cmd *se_cmd)
1532 {
1533 return target_put_sess_cmd(se_cmd);
1534 }
1535
lio_release_cmd(struct se_cmd * se_cmd)1536 static void lio_release_cmd(struct se_cmd *se_cmd)
1537 {
1538 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1539
1540 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1541 iscsit_release_cmd(cmd);
1542 }
1543
1544 const struct target_core_fabric_ops iscsi_ops = {
1545 .module = THIS_MODULE,
1546 .fabric_alias = "iscsi",
1547 .fabric_name = "iSCSI",
1548 .node_acl_size = sizeof(struct iscsi_node_acl),
1549 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,
1550 .tpg_get_tag = lio_tpg_get_tag,
1551 .tpg_get_default_depth = lio_tpg_get_default_depth,
1552 .tpg_check_demo_mode = lio_tpg_check_demo_mode,
1553 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
1554 .tpg_check_demo_mode_write_protect =
1555 lio_tpg_check_demo_mode_write_protect,
1556 .tpg_check_prod_mode_write_protect =
1557 lio_tpg_check_prod_mode_write_protect,
1558 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
1559 .tpg_get_inst_index = lio_tpg_get_inst_index,
1560 .check_stop_free = lio_check_stop_free,
1561 .release_cmd = lio_release_cmd,
1562 .close_session = lio_tpg_close_session,
1563 .sess_get_index = lio_sess_get_index,
1564 .sess_get_initiator_sid = lio_sess_get_initiator_sid,
1565 .write_pending = lio_write_pending,
1566 .set_default_node_attributes = lio_set_default_node_attributes,
1567 .get_cmd_state = iscsi_get_cmd_state,
1568 .queue_data_in = lio_queue_data_in,
1569 .queue_status = lio_queue_status,
1570 .queue_tm_rsp = lio_queue_tm_rsp,
1571 .aborted_task = lio_aborted_task,
1572 .fabric_make_wwn = lio_target_call_coreaddtiqn,
1573 .fabric_drop_wwn = lio_target_call_coredeltiqn,
1574 .add_wwn_groups = lio_target_add_wwn_groups,
1575 .fabric_make_tpg = lio_target_tiqn_addtpg,
1576 .fabric_enable_tpg = lio_target_tiqn_enabletpg,
1577 .fabric_drop_tpg = lio_target_tiqn_deltpg,
1578 .fabric_make_np = lio_target_call_addnptotpg,
1579 .fabric_drop_np = lio_target_call_delnpfromtpg,
1580 .fabric_init_nodeacl = lio_target_init_nodeacl,
1581
1582 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,
1583 .tfc_wwn_attrs = lio_target_wwn_attrs,
1584 .tfc_tpg_base_attrs = lio_target_tpg_attrs,
1585 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
1586 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
1587 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
1588 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,
1589 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
1590 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
1591 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
1592 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
1593
1594 .write_pending_must_be_called = true,
1595 };
1596