tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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
34static 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
39static 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
55static 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;
111out:
112 iscsit_put_tpg(tpg);
113 return rc;
114}
115
116static 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
121static 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}
127CONFIGFS_ATTR(lio_target_np_, iser);
128
129static 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
134static 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}
140CONFIGFS_ATTR(lio_target_np_, cxgbit);
141
142static 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
154static 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 = container_of(se_tpg, struct iscsi_portal_group, 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
247static 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");
271out:
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) \
280static 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 = container_of(se_nacl, struct iscsi_node_acl, \
285 se_node_acl); \
286 \
287 return sprintf(page, "%u\n", nacl->node_attrib.name); \
288} \
289 \
290static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
291 const char *page, size_t count) \
292{ \
293 struct se_node_acl *se_nacl = attrib_to_nacl(item); \
294 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
295 se_node_acl); \
296 u32 val; \
297 int ret; \
298 \
299 ret = kstrtou32(page, 0, &val); \
300 if (ret) \
301 return ret; \
302 ret = iscsit_na_##name(nacl, val); \
303 if (ret < 0) \
304 return ret; \
305 \
306 return count; \
307} \
308 \
309CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
310
311ISCSI_NACL_ATTR(dataout_timeout);
312ISCSI_NACL_ATTR(dataout_timeout_retries);
313ISCSI_NACL_ATTR(default_erl);
314ISCSI_NACL_ATTR(nopin_timeout);
315ISCSI_NACL_ATTR(nopin_response_timeout);
316ISCSI_NACL_ATTR(random_datain_pdu_offsets);
317ISCSI_NACL_ATTR(random_datain_seq_offsets);
318ISCSI_NACL_ATTR(random_r2t_offsets);
319
320static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
321 &iscsi_nacl_attrib_attr_dataout_timeout,
322 &iscsi_nacl_attrib_attr_dataout_timeout_retries,
323 &iscsi_nacl_attrib_attr_default_erl,
324 &iscsi_nacl_attrib_attr_nopin_timeout,
325 &iscsi_nacl_attrib_attr_nopin_response_timeout,
326 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
327 &iscsi_nacl_attrib_attr_random_datain_seq_offsets,
328 &iscsi_nacl_attrib_attr_random_r2t_offsets,
329 NULL,
330};
331
332/* End items for lio_target_nacl_attrib_cit */
333
334/* Start items for lio_target_nacl_auth_cit */
335
336#define __DEF_NACL_AUTH_STR(prefix, name, flags) \
337static ssize_t __iscsi_##prefix##_##name##_show( \
338 struct iscsi_node_acl *nacl, \
339 char *page) \
340{ \
341 struct iscsi_node_auth *auth = &nacl->node_auth; \
342 \
343 if (!capable(CAP_SYS_ADMIN)) \
344 return -EPERM; \
345 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
346} \
347 \
348static ssize_t __iscsi_##prefix##_##name##_store( \
349 struct iscsi_node_acl *nacl, \
350 const char *page, \
351 size_t count) \
352{ \
353 struct iscsi_node_auth *auth = &nacl->node_auth; \
354 \
355 if (!capable(CAP_SYS_ADMIN)) \
356 return -EPERM; \
357 if (count >= sizeof(auth->name)) \
358 return -EINVAL; \
359 snprintf(auth->name, sizeof(auth->name), "%s", page); \
360 if (!strncmp("NULL", auth->name, 4)) \
361 auth->naf_flags &= ~flags; \
362 else \
363 auth->naf_flags |= flags; \
364 \
365 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
366 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
367 auth->authenticate_target = 1; \
368 else \
369 auth->authenticate_target = 0; \
370 \
371 return count; \
372}
373
374#define DEF_NACL_AUTH_STR(name, flags) \
375 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
376static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
377 char *page) \
378{ \
379 struct se_node_acl *nacl = auth_to_nacl(item); \
380 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
381 struct iscsi_node_acl, se_node_acl), page); \
382} \
383static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
384 const char *page, size_t count) \
385{ \
386 struct se_node_acl *nacl = auth_to_nacl(item); \
387 return __iscsi_nacl_auth_##name##_store(container_of(nacl, \
388 struct iscsi_node_acl, se_node_acl), page, count); \
389} \
390 \
391CONFIGFS_ATTR(iscsi_nacl_auth_, name)
392
393/*
394 * One-way authentication userid
395 */
396DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
397DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
398DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
399DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
400
401#define __DEF_NACL_AUTH_INT(prefix, name) \
402static ssize_t __iscsi_##prefix##_##name##_show( \
403 struct iscsi_node_acl *nacl, \
404 char *page) \
405{ \
406 struct iscsi_node_auth *auth = &nacl->node_auth; \
407 \
408 if (!capable(CAP_SYS_ADMIN)) \
409 return -EPERM; \
410 \
411 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
412}
413
414#define DEF_NACL_AUTH_INT(name) \
415 __DEF_NACL_AUTH_INT(nacl_auth, name) \
416static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
417 char *page) \
418{ \
419 struct se_node_acl *nacl = auth_to_nacl(item); \
420 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
421 struct iscsi_node_acl, se_node_acl), page); \
422} \
423 \
424CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
425
426DEF_NACL_AUTH_INT(authenticate_target);
427
428static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
429 &iscsi_nacl_auth_attr_userid,
430 &iscsi_nacl_auth_attr_password,
431 &iscsi_nacl_auth_attr_authenticate_target,
432 &iscsi_nacl_auth_attr_userid_mutual,
433 &iscsi_nacl_auth_attr_password_mutual,
434 NULL,
435};
436
437/* End items for lio_target_nacl_auth_cit */
438
439/* Start items for lio_target_nacl_param_cit */
440
441#define ISCSI_NACL_PARAM(name) \
442static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
443 char *page) \
444{ \
445 struct se_node_acl *se_nacl = param_to_nacl(item); \
446 struct iscsi_session *sess; \
447 struct se_session *se_sess; \
448 ssize_t rb; \
449 \
450 spin_lock_bh(&se_nacl->nacl_sess_lock); \
451 se_sess = se_nacl->nacl_sess; \
452 if (!se_sess) { \
453 rb = snprintf(page, PAGE_SIZE, \
454 "No Active iSCSI Session\n"); \
455 } else { \
456 sess = se_sess->fabric_sess_ptr; \
457 rb = snprintf(page, PAGE_SIZE, "%u\n", \
458 (u32)sess->sess_ops->name); \
459 } \
460 spin_unlock_bh(&se_nacl->nacl_sess_lock); \
461 \
462 return rb; \
463} \
464 \
465CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
466
467ISCSI_NACL_PARAM(MaxConnections);
468ISCSI_NACL_PARAM(InitialR2T);
469ISCSI_NACL_PARAM(ImmediateData);
470ISCSI_NACL_PARAM(MaxBurstLength);
471ISCSI_NACL_PARAM(FirstBurstLength);
472ISCSI_NACL_PARAM(DefaultTime2Wait);
473ISCSI_NACL_PARAM(DefaultTime2Retain);
474ISCSI_NACL_PARAM(MaxOutstandingR2T);
475ISCSI_NACL_PARAM(DataPDUInOrder);
476ISCSI_NACL_PARAM(DataSequenceInOrder);
477ISCSI_NACL_PARAM(ErrorRecoveryLevel);
478
479static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
480 &iscsi_nacl_param_attr_MaxConnections,
481 &iscsi_nacl_param_attr_InitialR2T,
482 &iscsi_nacl_param_attr_ImmediateData,
483 &iscsi_nacl_param_attr_MaxBurstLength,
484 &iscsi_nacl_param_attr_FirstBurstLength,
485 &iscsi_nacl_param_attr_DefaultTime2Wait,
486 &iscsi_nacl_param_attr_DefaultTime2Retain,
487 &iscsi_nacl_param_attr_MaxOutstandingR2T,
488 &iscsi_nacl_param_attr_DataPDUInOrder,
489 &iscsi_nacl_param_attr_DataSequenceInOrder,
490 &iscsi_nacl_param_attr_ErrorRecoveryLevel,
491 NULL,
492};
493
494/* End items for lio_target_nacl_param_cit */
495
496/* Start items for lio_target_acl_cit */
497
498static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
499{
500 struct se_node_acl *se_nacl = acl_to_nacl(item);
501 struct iscsi_session *sess;
502 struct iscsi_conn *conn;
503 struct se_session *se_sess;
504 ssize_t rb = 0;
505 u32 max_cmd_sn;
506
507 spin_lock_bh(&se_nacl->nacl_sess_lock);
508 se_sess = se_nacl->nacl_sess;
509 if (!se_sess) {
510 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
511 " Endpoint: %s\n", se_nacl->initiatorname);
512 } else {
513 sess = se_sess->fabric_sess_ptr;
514
515 rb += sprintf(page+rb, "InitiatorName: %s\n",
516 sess->sess_ops->InitiatorName);
517 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
518 sess->sess_ops->InitiatorAlias);
519
520 rb += sprintf(page+rb,
521 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",
522 sess->sid, sess->isid, sess->tsih);
523 rb += sprintf(page+rb, "SessionType: %s\n",
524 (sess->sess_ops->SessionType) ?
525 "Discovery" : "Normal");
526 rb += sprintf(page+rb, "Session State: ");
527 switch (sess->session_state) {
528 case TARG_SESS_STATE_FREE:
529 rb += sprintf(page+rb, "TARG_SESS_FREE\n");
530 break;
531 case TARG_SESS_STATE_ACTIVE:
532 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
533 break;
534 case TARG_SESS_STATE_LOGGED_IN:
535 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
536 break;
537 case TARG_SESS_STATE_FAILED:
538 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
539 break;
540 case TARG_SESS_STATE_IN_CONTINUE:
541 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
542 break;
543 default:
544 rb += sprintf(page+rb, "ERROR: Unknown Session"
545 " State!\n");
546 break;
547 }
548
549 rb += sprintf(page+rb, "---------------------[iSCSI Session"
550 " Values]-----------------------\n");
551 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
552 " : MaxCmdSN : ITT : TTT\n");
553 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
554 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
555 " 0x%08x 0x%08x\n",
556 sess->cmdsn_window,
557 (max_cmd_sn - sess->exp_cmd_sn) + 1,
558 sess->exp_cmd_sn, max_cmd_sn,
559 sess->init_task_tag, sess->targ_xfer_tag);
560 rb += sprintf(page+rb, "----------------------[iSCSI"
561 " Connections]-------------------------\n");
562
563 spin_lock(&sess->conn_lock);
564 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
565 rb += sprintf(page+rb, "CID: %hu Connection"
566 " State: ", conn->cid);
567 switch (conn->conn_state) {
568 case TARG_CONN_STATE_FREE:
569 rb += sprintf(page+rb,
570 "TARG_CONN_STATE_FREE\n");
571 break;
572 case TARG_CONN_STATE_XPT_UP:
573 rb += sprintf(page+rb,
574 "TARG_CONN_STATE_XPT_UP\n");
575 break;
576 case TARG_CONN_STATE_IN_LOGIN:
577 rb += sprintf(page+rb,
578 "TARG_CONN_STATE_IN_LOGIN\n");
579 break;
580 case TARG_CONN_STATE_LOGGED_IN:
581 rb += sprintf(page+rb,
582 "TARG_CONN_STATE_LOGGED_IN\n");
583 break;
584 case TARG_CONN_STATE_IN_LOGOUT:
585 rb += sprintf(page+rb,
586 "TARG_CONN_STATE_IN_LOGOUT\n");
587 break;
588 case TARG_CONN_STATE_LOGOUT_REQUESTED:
589 rb += sprintf(page+rb,
590 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
591 break;
592 case TARG_CONN_STATE_CLEANUP_WAIT:
593 rb += sprintf(page+rb,
594 "TARG_CONN_STATE_CLEANUP_WAIT\n");
595 break;
596 default:
597 rb += sprintf(page+rb,
598 "ERROR: Unknown Connection State!\n");
599 break;
600 }
601
602 rb += sprintf(page+rb, " Address %pISc %s", &conn->login_sockaddr,
603 (conn->network_transport == ISCSI_TCP) ?
604 "TCP" : "SCTP");
605 rb += sprintf(page+rb, " StatSN: 0x%08x\n",
606 conn->stat_sn);
607 }
608 spin_unlock(&sess->conn_lock);
609 }
610 spin_unlock_bh(&se_nacl->nacl_sess_lock);
611
612 return rb;
613}
614
615static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
616 char *page)
617{
618 return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth);
619}
620
621static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
622 const char *page, size_t count)
623{
624 struct se_node_acl *se_nacl = acl_to_nacl(item);
625 struct se_portal_group *se_tpg = se_nacl->se_tpg;
626 struct iscsi_portal_group *tpg = container_of(se_tpg,
627 struct iscsi_portal_group, tpg_se_tpg);
628 struct config_item *acl_ci, *tpg_ci, *wwn_ci;
629 u32 cmdsn_depth = 0;
630 int ret;
631
632 ret = kstrtou32(page, 0, &cmdsn_depth);
633 if (ret)
634 return ret;
635 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
636 pr_err("Passed cmdsn_depth: %u exceeds"
637 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
638 TA_DEFAULT_CMDSN_DEPTH_MAX);
639 return -EINVAL;
640 }
641 acl_ci = &se_nacl->acl_group.cg_item;
642 if (!acl_ci) {
643 pr_err("Unable to locatel acl_ci\n");
644 return -EINVAL;
645 }
646 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
647 if (!tpg_ci) {
648 pr_err("Unable to locate tpg_ci\n");
649 return -EINVAL;
650 }
651 wwn_ci = &tpg_ci->ci_group->cg_item;
652 if (!wwn_ci) {
653 pr_err("Unable to locate config_item wwn_ci\n");
654 return -EINVAL;
655 }
656
657 if (iscsit_get_tpg(tpg) < 0)
658 return -EINVAL;
659
660 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);
661
662 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
663 "InitiatorName: %s\n", config_item_name(wwn_ci),
664 config_item_name(tpg_ci), cmdsn_depth,
665 config_item_name(acl_ci));
666
667 iscsit_put_tpg(tpg);
668 return (!ret) ? count : (ssize_t)ret;
669}
670
671static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
672{
673 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
674}
675
676static ssize_t lio_target_nacl_tag_store(struct config_item *item,
677 const char *page, size_t count)
678{
679 struct se_node_acl *se_nacl = acl_to_nacl(item);
680 int ret;
681
682 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
683
684 if (ret < 0)
685 return ret;
686 return count;
687}
688
689CONFIGFS_ATTR_RO(lio_target_nacl_, info);
690CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
691CONFIGFS_ATTR(lio_target_nacl_, tag);
692
693static struct configfs_attribute *lio_target_initiator_attrs[] = {
694 &lio_target_nacl_attr_info,
695 &lio_target_nacl_attr_cmdsn_depth,
696 &lio_target_nacl_attr_tag,
697 NULL,
698};
699
700static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
701 const char *name)
702{
703 struct iscsi_node_acl *acl =
704 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
705
706 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
707 "iscsi_sess_stats", &iscsi_stat_sess_cit);
708 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
709 &se_nacl->acl_fabric_stat_group);
710 return 0;
711}
712
713/* End items for lio_target_acl_cit */
714
715/* Start items for lio_target_tpg_attrib_cit */
716
717#define DEF_TPG_ATTRIB(name) \
718 \
719static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
720 char *page) \
721{ \
722 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
723 struct iscsi_portal_group *tpg = container_of(se_tpg, \
724 struct iscsi_portal_group, tpg_se_tpg); \
725 ssize_t rb; \
726 \
727 if (iscsit_get_tpg(tpg) < 0) \
728 return -EINVAL; \
729 \
730 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \
731 iscsit_put_tpg(tpg); \
732 return rb; \
733} \
734 \
735static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
736 const char *page, size_t count) \
737{ \
738 struct se_portal_group *se_tpg = attrib_to_tpg(item); \
739 struct iscsi_portal_group *tpg = container_of(se_tpg, \
740 struct iscsi_portal_group, tpg_se_tpg); \
741 u32 val; \
742 int ret; \
743 \
744 if (iscsit_get_tpg(tpg) < 0) \
745 return -EINVAL; \
746 \
747 ret = kstrtou32(page, 0, &val); \
748 if (ret) \
749 goto out; \
750 ret = iscsit_ta_##name(tpg, val); \
751 if (ret < 0) \
752 goto out; \
753 \
754 iscsit_put_tpg(tpg); \
755 return count; \
756out: \
757 iscsit_put_tpg(tpg); \
758 return ret; \
759} \
760CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
761
762DEF_TPG_ATTRIB(authentication);
763DEF_TPG_ATTRIB(login_timeout);
764DEF_TPG_ATTRIB(netif_timeout);
765DEF_TPG_ATTRIB(generate_node_acls);
766DEF_TPG_ATTRIB(default_cmdsn_depth);
767DEF_TPG_ATTRIB(cache_dynamic_acls);
768DEF_TPG_ATTRIB(demo_mode_write_protect);
769DEF_TPG_ATTRIB(prod_mode_write_protect);
770DEF_TPG_ATTRIB(demo_mode_discovery);
771DEF_TPG_ATTRIB(default_erl);
772DEF_TPG_ATTRIB(t10_pi);
773DEF_TPG_ATTRIB(fabric_prot_type);
774DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
775DEF_TPG_ATTRIB(login_keys_workaround);
776
777static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
778 &iscsi_tpg_attrib_attr_authentication,
779 &iscsi_tpg_attrib_attr_login_timeout,
780 &iscsi_tpg_attrib_attr_netif_timeout,
781 &iscsi_tpg_attrib_attr_generate_node_acls,
782 &iscsi_tpg_attrib_attr_default_cmdsn_depth,
783 &iscsi_tpg_attrib_attr_cache_dynamic_acls,
784 &iscsi_tpg_attrib_attr_demo_mode_write_protect,
785 &iscsi_tpg_attrib_attr_prod_mode_write_protect,
786 &iscsi_tpg_attrib_attr_demo_mode_discovery,
787 &iscsi_tpg_attrib_attr_default_erl,
788 &iscsi_tpg_attrib_attr_t10_pi,
789 &iscsi_tpg_attrib_attr_fabric_prot_type,
790 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
791 &iscsi_tpg_attrib_attr_login_keys_workaround,
792 NULL,
793};
794
795/* End items for lio_target_tpg_attrib_cit */
796
797/* Start items for lio_target_tpg_auth_cit */
798
799#define __DEF_TPG_AUTH_STR(prefix, name, flags) \
800static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
801 char *page) \
802{ \
803 struct iscsi_portal_group *tpg = container_of(se_tpg, \
804 struct iscsi_portal_group, tpg_se_tpg); \
805 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
806 \
807 if (!capable(CAP_SYS_ADMIN)) \
808 return -EPERM; \
809 \
810 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
811} \
812 \
813static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
814 const char *page, size_t count) \
815{ \
816 struct iscsi_portal_group *tpg = container_of(se_tpg, \
817 struct iscsi_portal_group, tpg_se_tpg); \
818 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
819 \
820 if (!capable(CAP_SYS_ADMIN)) \
821 return -EPERM; \
822 \
823 snprintf(auth->name, sizeof(auth->name), "%s", page); \
824 if (!(strncmp("NULL", auth->name, 4))) \
825 auth->naf_flags &= ~flags; \
826 else \
827 auth->naf_flags |= flags; \
828 \
829 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
830 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
831 auth->authenticate_target = 1; \
832 else \
833 auth->authenticate_target = 0; \
834 \
835 return count; \
836}
837
838#define DEF_TPG_AUTH_STR(name, flags) \
839 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
840static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
841 char *page) \
842{ \
843 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
844} \
845 \
846static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \
847 const char *page, size_t count) \
848{ \
849 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
850} \
851 \
852CONFIGFS_ATTR(iscsi_tpg_auth_, name);
853
854
855DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
856DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
857DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
858DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
859
860#define __DEF_TPG_AUTH_INT(prefix, name) \
861static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
862 char *page) \
863{ \
864 struct iscsi_portal_group *tpg = container_of(se_tpg, \
865 struct iscsi_portal_group, tpg_se_tpg); \
866 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
867 \
868 if (!capable(CAP_SYS_ADMIN)) \
869 return -EPERM; \
870 \
871 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
872}
873
874#define DEF_TPG_AUTH_INT(name) \
875 __DEF_TPG_AUTH_INT(tpg_auth, name) \
876static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
877 char *page) \
878{ \
879 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
880} \
881CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
882
883DEF_TPG_AUTH_INT(authenticate_target);
884
885static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
886 &iscsi_tpg_auth_attr_userid,
887 &iscsi_tpg_auth_attr_password,
888 &iscsi_tpg_auth_attr_authenticate_target,
889 &iscsi_tpg_auth_attr_userid_mutual,
890 &iscsi_tpg_auth_attr_password_mutual,
891 NULL,
892};
893
894/* End items for lio_target_tpg_auth_cit */
895
896/* Start items for lio_target_tpg_param_cit */
897
898#define DEF_TPG_PARAM(name) \
899static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
900 char *page) \
901{ \
902 struct se_portal_group *se_tpg = param_to_tpg(item); \
903 struct iscsi_portal_group *tpg = container_of(se_tpg, \
904 struct iscsi_portal_group, tpg_se_tpg); \
905 struct iscsi_param *param; \
906 ssize_t rb; \
907 \
908 if (iscsit_get_tpg(tpg) < 0) \
909 return -EINVAL; \
910 \
911 param = iscsi_find_param_from_key(__stringify(name), \
912 tpg->param_list); \
913 if (!param) { \
914 iscsit_put_tpg(tpg); \
915 return -EINVAL; \
916 } \
917 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
918 \
919 iscsit_put_tpg(tpg); \
920 return rb; \
921} \
922static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
923 const char *page, size_t count) \
924{ \
925 struct se_portal_group *se_tpg = param_to_tpg(item); \
926 struct iscsi_portal_group *tpg = container_of(se_tpg, \
927 struct iscsi_portal_group, tpg_se_tpg); \
928 char *buf; \
929 int ret, len; \
930 \
931 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
932 if (!buf) \
933 return -ENOMEM; \
934 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
935 if (isspace(buf[len-1])) \
936 buf[len-1] = '\0'; /* Kill newline */ \
937 \
938 if (iscsit_get_tpg(tpg) < 0) { \
939 kfree(buf); \
940 return -EINVAL; \
941 } \
942 \
943 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
944 if (ret < 0) \
945 goto out; \
946 \
947 kfree(buf); \
948 iscsit_put_tpg(tpg); \
949 return count; \
950out: \
951 kfree(buf); \
952 iscsit_put_tpg(tpg); \
953 return -EINVAL; \
954} \
955CONFIGFS_ATTR(iscsi_tpg_param_, name)
956
957DEF_TPG_PARAM(AuthMethod);
958DEF_TPG_PARAM(HeaderDigest);
959DEF_TPG_PARAM(DataDigest);
960DEF_TPG_PARAM(MaxConnections);
961DEF_TPG_PARAM(TargetAlias);
962DEF_TPG_PARAM(InitialR2T);
963DEF_TPG_PARAM(ImmediateData);
964DEF_TPG_PARAM(MaxRecvDataSegmentLength);
965DEF_TPG_PARAM(MaxXmitDataSegmentLength);
966DEF_TPG_PARAM(MaxBurstLength);
967DEF_TPG_PARAM(FirstBurstLength);
968DEF_TPG_PARAM(DefaultTime2Wait);
969DEF_TPG_PARAM(DefaultTime2Retain);
970DEF_TPG_PARAM(MaxOutstandingR2T);
971DEF_TPG_PARAM(DataPDUInOrder);
972DEF_TPG_PARAM(DataSequenceInOrder);
973DEF_TPG_PARAM(ErrorRecoveryLevel);
974DEF_TPG_PARAM(IFMarker);
975DEF_TPG_PARAM(OFMarker);
976DEF_TPG_PARAM(IFMarkInt);
977DEF_TPG_PARAM(OFMarkInt);
978
979static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
980 &iscsi_tpg_param_attr_AuthMethod,
981 &iscsi_tpg_param_attr_HeaderDigest,
982 &iscsi_tpg_param_attr_DataDigest,
983 &iscsi_tpg_param_attr_MaxConnections,
984 &iscsi_tpg_param_attr_TargetAlias,
985 &iscsi_tpg_param_attr_InitialR2T,
986 &iscsi_tpg_param_attr_ImmediateData,
987 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
988 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
989 &iscsi_tpg_param_attr_MaxBurstLength,
990 &iscsi_tpg_param_attr_FirstBurstLength,
991 &iscsi_tpg_param_attr_DefaultTime2Wait,
992 &iscsi_tpg_param_attr_DefaultTime2Retain,
993 &iscsi_tpg_param_attr_MaxOutstandingR2T,
994 &iscsi_tpg_param_attr_DataPDUInOrder,
995 &iscsi_tpg_param_attr_DataSequenceInOrder,
996 &iscsi_tpg_param_attr_ErrorRecoveryLevel,
997 &iscsi_tpg_param_attr_IFMarker,
998 &iscsi_tpg_param_attr_OFMarker,
999 &iscsi_tpg_param_attr_IFMarkInt,
1000 &iscsi_tpg_param_attr_OFMarkInt,
1001 NULL,
1002};
1003
1004/* End items for lio_target_tpg_param_cit */
1005
1006/* Start items for lio_target_tpg_cit */
1007
1008static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page)
1009{
1010 struct se_portal_group *se_tpg = to_tpg(item);
1011 struct iscsi_portal_group *tpg = container_of(se_tpg,
1012 struct iscsi_portal_group, tpg_se_tpg);
1013 ssize_t len;
1014
1015 spin_lock(&tpg->tpg_state_lock);
1016 len = sprintf(page, "%d\n",
1017 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1018 spin_unlock(&tpg->tpg_state_lock);
1019
1020 return len;
1021}
1022
1023static ssize_t lio_target_tpg_enable_store(struct config_item *item,
1024 const char *page, size_t count)
1025{
1026 struct se_portal_group *se_tpg = to_tpg(item);
1027 struct iscsi_portal_group *tpg = container_of(se_tpg,
1028 struct iscsi_portal_group, tpg_se_tpg);
1029 u32 op;
1030 int ret;
1031
1032 ret = kstrtou32(page, 0, &op);
1033 if (ret)
1034 return ret;
1035 if ((op != 1) && (op != 0)) {
1036 pr_err("Illegal value for tpg_enable: %u\n", op);
1037 return -EINVAL;
1038 }
1039
1040 ret = iscsit_get_tpg(tpg);
1041 if (ret < 0)
1042 return -EINVAL;
1043
1044 if (op) {
1045 ret = iscsit_tpg_enable_portal_group(tpg);
1046 if (ret < 0)
1047 goto out;
1048 } else {
1049 /*
1050 * iscsit_tpg_disable_portal_group() assumes force=1
1051 */
1052 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1053 if (ret < 0)
1054 goto out;
1055 }
1056
1057 iscsit_put_tpg(tpg);
1058 return count;
1059out:
1060 iscsit_put_tpg(tpg);
1061 return -EINVAL;
1062}
1063
1064
1065static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1066 char *page)
1067{
1068 return target_show_dynamic_sessions(to_tpg(item), page);
1069}
1070
1071CONFIGFS_ATTR(lio_target_tpg_, enable);
1072CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1073
1074static struct configfs_attribute *lio_target_tpg_attrs[] = {
1075 &lio_target_tpg_attr_enable,
1076 &lio_target_tpg_attr_dynamic_sessions,
1077 NULL,
1078};
1079
1080/* End items for lio_target_tpg_cit */
1081
1082/* Start items for lio_target_tiqn_cit */
1083
1084static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,
1085 const char *name)
1086{
1087 struct iscsi_portal_group *tpg;
1088 struct iscsi_tiqn *tiqn;
1089 char *tpgt_str;
1090 int ret;
1091 u16 tpgt;
1092
1093 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1094 /*
1095 * Only tpgt_# directory groups can be created below
1096 * target/iscsi/iqn.superturodiskarry/
1097 */
1098 tpgt_str = strstr(name, "tpgt_");
1099 if (!tpgt_str) {
1100 pr_err("Unable to locate \"tpgt_#\" directory"
1101 " group\n");
1102 return NULL;
1103 }
1104 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1105 ret = kstrtou16(tpgt_str, 0, &tpgt);
1106 if (ret)
1107 return NULL;
1108
1109 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1110 if (!tpg)
1111 return NULL;
1112
1113 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1114 if (ret < 0)
1115 goto free_out;
1116
1117 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1118 if (ret != 0)
1119 goto out;
1120
1121 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1122 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1123 name);
1124 return &tpg->tpg_se_tpg;
1125out:
1126 core_tpg_deregister(&tpg->tpg_se_tpg);
1127free_out:
1128 kfree(tpg);
1129 return NULL;
1130}
1131
1132static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1133{
1134 struct iscsi_portal_group *tpg;
1135 struct iscsi_tiqn *tiqn;
1136
1137 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1138 tiqn = tpg->tpg_tiqn;
1139 /*
1140 * iscsit_tpg_del_portal_group() assumes force=1
1141 */
1142 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1143 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1144}
1145
1146/* End items for lio_target_tiqn_cit */
1147
1148/* Start LIO-Target TIQN struct contig_item lio_target_cit */
1149
1150static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1151 char *page)
1152{
1153 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1154}
1155
1156CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1157
1158static struct configfs_attribute *lio_target_wwn_attrs[] = {
1159 &lio_target_wwn_attr_lio_version,
1160 NULL,
1161};
1162
1163static struct se_wwn *lio_target_call_coreaddtiqn(
1164 struct target_fabric_configfs *tf,
1165 struct config_group *group,
1166 const char *name)
1167{
1168 struct iscsi_tiqn *tiqn;
1169
1170 tiqn = iscsit_add_tiqn((unsigned char *)name);
1171 if (IS_ERR(tiqn))
1172 return ERR_CAST(tiqn);
1173
1174 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1175 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1176 " %s\n", name);
1177 return &tiqn->tiqn_wwn;
1178}
1179
1180static void lio_target_add_wwn_groups(struct se_wwn *wwn)
1181{
1182 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1183
1184 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1185 "iscsi_instance", &iscsi_stat_instance_cit);
1186 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1187 &tiqn->tiqn_wwn.fabric_stat_group);
1188
1189 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1190 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1191 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1192 &tiqn->tiqn_wwn.fabric_stat_group);
1193
1194 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1195 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1196 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1197 &tiqn->tiqn_wwn.fabric_stat_group);
1198
1199 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1200 "iscsi_login_stats", &iscsi_stat_login_cit);
1201 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1202 &tiqn->tiqn_wwn.fabric_stat_group);
1203
1204 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1205 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1206 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1207 &tiqn->tiqn_wwn.fabric_stat_group);
1208}
1209
1210static void lio_target_call_coredeltiqn(
1211 struct se_wwn *wwn)
1212{
1213 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1214
1215 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1216 tiqn->tiqn);
1217 iscsit_del_tiqn(tiqn);
1218}
1219
1220/* End LIO-Target TIQN struct contig_lio_target_cit */
1221
1222/* Start lio_target_discovery_auth_cit */
1223
1224#define DEF_DISC_AUTH_STR(name, flags) \
1225 __DEF_NACL_AUTH_STR(disc, name, flags) \
1226static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1227{ \
1228 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1229 page); \
1230} \
1231static ssize_t iscsi_disc_##name##_store(struct config_item *item, \
1232 const char *page, size_t count) \
1233{ \
1234 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \
1235 page, count); \
1236 \
1237} \
1238CONFIGFS_ATTR(iscsi_disc_, name)
1239
1240DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1241DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1242DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1243DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1244
1245#define DEF_DISC_AUTH_INT(name) \
1246 __DEF_NACL_AUTH_INT(disc, name) \
1247static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1248{ \
1249 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1250 page); \
1251} \
1252CONFIGFS_ATTR_RO(iscsi_disc_, name)
1253
1254DEF_DISC_AUTH_INT(authenticate_target);
1255
1256
1257static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1258 char *page)
1259{
1260 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1261
1262 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1263}
1264
1265static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1266 const char *page, size_t count)
1267{
1268 struct iscsi_param *param;
1269 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1270 u32 op;
1271 int err;
1272
1273 err = kstrtou32(page, 0, &op);
1274 if (err)
1275 return -EINVAL;
1276 if ((op != 1) && (op != 0)) {
1277 pr_err("Illegal value for enforce_discovery_auth:"
1278 " %u\n", op);
1279 return -EINVAL;
1280 }
1281
1282 if (!discovery_tpg) {
1283 pr_err("iscsit_global->discovery_tpg is NULL\n");
1284 return -EINVAL;
1285 }
1286
1287 param = iscsi_find_param_from_key(AUTHMETHOD,
1288 discovery_tpg->param_list);
1289 if (!param)
1290 return -EINVAL;
1291
1292 if (op) {
1293 /*
1294 * Reset the AuthMethod key to CHAP.
1295 */
1296 if (iscsi_update_param_value(param, CHAP) < 0)
1297 return -EINVAL;
1298
1299 discovery_tpg->tpg_attrib.authentication = 1;
1300 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1301 pr_debug("LIO-CORE[0] Successfully enabled"
1302 " authentication enforcement for iSCSI"
1303 " Discovery TPG\n");
1304 } else {
1305 /*
1306 * Reset the AuthMethod key to CHAP,None
1307 */
1308 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1309 return -EINVAL;
1310
1311 discovery_tpg->tpg_attrib.authentication = 0;
1312 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1313 pr_debug("LIO-CORE[0] Successfully disabled"
1314 " authentication enforcement for iSCSI"
1315 " Discovery TPG\n");
1316 }
1317
1318 return count;
1319}
1320
1321CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1322
1323static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1324 &iscsi_disc_attr_userid,
1325 &iscsi_disc_attr_password,
1326 &iscsi_disc_attr_authenticate_target,
1327 &iscsi_disc_attr_userid_mutual,
1328 &iscsi_disc_attr_password_mutual,
1329 &iscsi_disc_attr_enforce_discovery_auth,
1330 NULL,
1331};
1332
1333/* End lio_target_discovery_auth_cit */
1334
1335/* Start functions for target_core_fabric_ops */
1336
1337static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1338{
1339 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1340
1341 return cmd->i_state;
1342}
1343
1344static u32 lio_sess_get_index(struct se_session *se_sess)
1345{
1346 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1347
1348 return sess->session_index;
1349}
1350
1351static u32 lio_sess_get_initiator_sid(
1352 struct se_session *se_sess,
1353 unsigned char *buf,
1354 u32 size)
1355{
1356 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1357 /*
1358 * iSCSI Initiator Session Identifier from RFC-3720.
1359 */
1360 return snprintf(buf, size, "%6phN", sess->isid);
1361}
1362
1363static int lio_queue_data_in(struct se_cmd *se_cmd)
1364{
1365 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1366 struct iscsi_conn *conn = cmd->conn;
1367
1368 cmd->i_state = ISTATE_SEND_DATAIN;
1369 return conn->conn_transport->iscsit_queue_data_in(conn, cmd);
1370}
1371
1372static int lio_write_pending(struct se_cmd *se_cmd)
1373{
1374 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1375 struct iscsi_conn *conn = cmd->conn;
1376
1377 if (!cmd->immediate_data && !cmd->unsolicited_data)
1378 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1379
1380 return 0;
1381}
1382
1383static int lio_queue_status(struct se_cmd *se_cmd)
1384{
1385 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1386 struct iscsi_conn *conn = cmd->conn;
1387
1388 cmd->i_state = ISTATE_SEND_STATUS;
1389
1390 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1391 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
1392 }
1393 return conn->conn_transport->iscsit_queue_status(conn, cmd);
1394}
1395
1396static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1397{
1398 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1399
1400 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1401 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1402}
1403
1404static void lio_aborted_task(struct se_cmd *se_cmd)
1405{
1406 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1407
1408 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1409}
1410
1411static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1412{
1413 return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1414}
1415
1416static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1417{
1418 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1419}
1420
1421static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1422{
1423 return iscsi_tpg(se_tpg)->tpgt;
1424}
1425
1426static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1427{
1428 return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1429}
1430
1431static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1432{
1433 return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1434}
1435
1436static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1437{
1438 return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1439}
1440
1441static int lio_tpg_check_demo_mode_write_protect(
1442 struct se_portal_group *se_tpg)
1443{
1444 return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1445}
1446
1447static int lio_tpg_check_prod_mode_write_protect(
1448 struct se_portal_group *se_tpg)
1449{
1450 return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1451}
1452
1453static int lio_tpg_check_prot_fabric_only(
1454 struct se_portal_group *se_tpg)
1455{
1456 /*
1457 * Only report fabric_prot_type if t10_pi has also been enabled
1458 * for incoming ib_isert sessions.
1459 */
1460 if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1461 return 0;
1462 return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1463}
1464
1465/*
1466 * This function calls iscsit_inc_session_usage_count() on the
1467 * struct iscsi_session in question.
1468 */
1469static void lio_tpg_close_session(struct se_session *se_sess)
1470{
1471 struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1472 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
1473
1474 spin_lock_bh(&se_tpg->session_lock);
1475 spin_lock(&sess->conn_lock);
1476 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1477 atomic_read(&sess->session_logout) ||
1478 atomic_read(&sess->session_close) ||
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 iscsit_inc_session_usage_count(sess);
1485 atomic_set(&sess->session_reinstatement, 1);
1486 atomic_set(&sess->session_fall_back_to_erl0, 1);
1487 atomic_set(&sess->session_close, 1);
1488 spin_unlock(&sess->conn_lock);
1489
1490 iscsit_stop_time2retain_timer(sess);
1491 spin_unlock_bh(&se_tpg->session_lock);
1492
1493 iscsit_stop_session(sess, 1, 1);
1494 iscsit_dec_session_usage_count(sess);
1495}
1496
1497static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1498{
1499 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1500}
1501
1502static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1503{
1504 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1505 se_node_acl);
1506 struct se_portal_group *se_tpg = se_acl->se_tpg;
1507 struct iscsi_portal_group *tpg = container_of(se_tpg,
1508 struct iscsi_portal_group, tpg_se_tpg);
1509
1510 acl->node_attrib.nacl = acl;
1511 iscsit_set_default_node_attribues(acl, tpg);
1512}
1513
1514static int lio_check_stop_free(struct se_cmd *se_cmd)
1515{
1516 return target_put_sess_cmd(se_cmd);
1517}
1518
1519static void lio_release_cmd(struct se_cmd *se_cmd)
1520{
1521 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1522
1523 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1524 iscsit_release_cmd(cmd);
1525}
1526
1527const struct target_core_fabric_ops iscsi_ops = {
1528 .module = THIS_MODULE,
1529 .fabric_alias = "iscsi",
1530 .fabric_name = "iSCSI",
1531 .node_acl_size = sizeof(struct iscsi_node_acl),
1532 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,
1533 .tpg_get_tag = lio_tpg_get_tag,
1534 .tpg_get_default_depth = lio_tpg_get_default_depth,
1535 .tpg_check_demo_mode = lio_tpg_check_demo_mode,
1536 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
1537 .tpg_check_demo_mode_write_protect =
1538 lio_tpg_check_demo_mode_write_protect,
1539 .tpg_check_prod_mode_write_protect =
1540 lio_tpg_check_prod_mode_write_protect,
1541 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
1542 .tpg_get_inst_index = lio_tpg_get_inst_index,
1543 .check_stop_free = lio_check_stop_free,
1544 .release_cmd = lio_release_cmd,
1545 .close_session = lio_tpg_close_session,
1546 .sess_get_index = lio_sess_get_index,
1547 .sess_get_initiator_sid = lio_sess_get_initiator_sid,
1548 .write_pending = lio_write_pending,
1549 .set_default_node_attributes = lio_set_default_node_attributes,
1550 .get_cmd_state = iscsi_get_cmd_state,
1551 .queue_data_in = lio_queue_data_in,
1552 .queue_status = lio_queue_status,
1553 .queue_tm_rsp = lio_queue_tm_rsp,
1554 .aborted_task = lio_aborted_task,
1555 .fabric_make_wwn = lio_target_call_coreaddtiqn,
1556 .fabric_drop_wwn = lio_target_call_coredeltiqn,
1557 .add_wwn_groups = lio_target_add_wwn_groups,
1558 .fabric_make_tpg = lio_target_tiqn_addtpg,
1559 .fabric_drop_tpg = lio_target_tiqn_deltpg,
1560 .fabric_make_np = lio_target_call_addnptotpg,
1561 .fabric_drop_np = lio_target_call_delnpfromtpg,
1562 .fabric_init_nodeacl = lio_target_init_nodeacl,
1563
1564 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,
1565 .tfc_wwn_attrs = lio_target_wwn_attrs,
1566 .tfc_tpg_base_attrs = lio_target_tpg_attrs,
1567 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
1568 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
1569 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
1570 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,
1571 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
1572 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
1573 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
1574 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
1575
1576 .write_pending_must_be_called = true,
1577};