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accel/qaic: Add AIC200 support
[drm/drm-misc.git] / drivers / target / iscsi / iscsi_target_configfs.c
blob88db94f382bb926d6edbba4f7ca5abbdadb6d70c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*******************************************************************************
3 * This file contains the configfs implementation for iSCSI Target mode
4 * from the LIO-Target Project.
5 *
6 * (c) Copyright 2007-2013 Datera, Inc.
7 *
8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9 *
10 ****************************************************************************/
11
12 #include <linux/configfs.h>
13 #include <linux/ctype.h>
14 #include <linux/export.h>
15 #include <linux/inet.h>
16 #include <linux/module.h>
17 #include <net/ipv6.h>
18 #include <target/target_core_base.h>
19 #include <target/target_core_fabric.h>
20 #include <target/iscsi/iscsi_transport.h>
21 #include <target/iscsi/iscsi_target_core.h>
22 #include "iscsi_target_parameters.h"
23 #include "iscsi_target_device.h"
24 #include "iscsi_target_erl0.h"
25 #include "iscsi_target_nodeattrib.h"
26 #include "iscsi_target_tpg.h"
27 #include "iscsi_target_util.h"
28 #include "iscsi_target.h"
29 #include <target/iscsi/iscsi_target_stat.h>
30
31
32 /* Start items for lio_target_portal_cit */
33
34 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item)
35 {
36 return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np);
37 }
38
39 static ssize_t lio_target_np_driver_show(struct config_item *item, char *page,
40 enum iscsit_transport_type type)
41 {
42 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
43 struct iscsi_tpg_np *tpg_np_new;
44 ssize_t rb;
45
46 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
47 if (tpg_np_new)
48 rb = sysfs_emit(page, "1\n");
49 else
50 rb = sysfs_emit(page, "0\n");
51
52 return rb;
53 }
54
55 static ssize_t lio_target_np_driver_store(struct config_item *item,
56 const char *page, size_t count, enum iscsit_transport_type type,
57 const char *mod_name)
58 {
59 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
60 struct iscsi_np *np;
61 struct iscsi_portal_group *tpg;
62 struct iscsi_tpg_np *tpg_np_new = NULL;
63 u32 op;
64 int rc;
65
66 rc = kstrtou32(page, 0, &op);
67 if (rc)
68 return rc;
69 if ((op != 1) && (op != 0)) {
70 pr_err("Illegal value for tpg_enable: %u\n", op);
71 return -EINVAL;
72 }
73 np = tpg_np->tpg_np;
74 if (!np) {
75 pr_err("Unable to locate struct iscsi_np from"
76 " struct iscsi_tpg_np\n");
77 return -EINVAL;
78 }
79
80 tpg = tpg_np->tpg;
81 if (iscsit_get_tpg(tpg) < 0)
82 return -EINVAL;
83
84 if (op) {
85 if (strlen(mod_name)) {
86 rc = request_module(mod_name);
87 if (rc != 0) {
88 pr_warn("Unable to request_module for %s\n",
89 mod_name);
90 rc = 0;
91 }
92 }
93
94 tpg_np_new = iscsit_tpg_add_network_portal(tpg,
95 &np->np_sockaddr, tpg_np, type);
96 if (IS_ERR(tpg_np_new)) {
97 rc = PTR_ERR(tpg_np_new);
98 goto out;
99 }
100 } else {
101 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
102 if (tpg_np_new) {
103 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_new);
104 if (rc < 0)
105 goto out;
106 }
107 }
108
109 iscsit_put_tpg(tpg);
110 return count;
111 out:
112 iscsit_put_tpg(tpg);
113 return rc;
114 }
115
116 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page)
117 {
118 return lio_target_np_driver_show(item, page, ISCSI_INFINIBAND);
119 }
120
121 static ssize_t lio_target_np_iser_store(struct config_item *item,
122 const char *page, size_t count)
123 {
124 return lio_target_np_driver_store(item, page, count,
125 ISCSI_INFINIBAND, "ib_isert");
126 }
127 CONFIGFS_ATTR(lio_target_np_, iser);
128
129 static ssize_t lio_target_np_cxgbit_show(struct config_item *item, char *page)
130 {
131 return lio_target_np_driver_show(item, page, ISCSI_CXGBIT);
132 }
133
134 static ssize_t lio_target_np_cxgbit_store(struct config_item *item,
135 const char *page, size_t count)
136 {
137 return lio_target_np_driver_store(item, page, count,
138 ISCSI_CXGBIT, "cxgbit");
139 }
140 CONFIGFS_ATTR(lio_target_np_, cxgbit);
141
142 static struct configfs_attribute *lio_target_portal_attrs[] = {
143 &lio_target_np_attr_iser,
144 &lio_target_np_attr_cxgbit,
145 NULL,
146 };
147
148 /* Stop items for lio_target_portal_cit */
149
150 /* Start items for lio_target_np_cit */
151
152 #define MAX_PORTAL_LEN 256
153
154 static struct se_tpg_np *lio_target_call_addnptotpg(
155 struct se_portal_group *se_tpg,
156 struct config_group *group,
157 const char *name)
158 {
159 struct iscsi_portal_group *tpg;
160 struct iscsi_tpg_np *tpg_np;
161 char *str, *str2, *ip_str, *port_str;
162 struct sockaddr_storage sockaddr = { };
163 int ret;
164 char buf[MAX_PORTAL_LEN + 1] = { };
165
166 if (strlen(name) > MAX_PORTAL_LEN) {
167 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
168 (int)strlen(name), MAX_PORTAL_LEN);
169 return ERR_PTR(-EOVERFLOW);
170 }
171 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
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 sysfs_emit(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
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 sysfs_emit(page, "%d\n", nacl->node_attrib.authentication);
324 }
325
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
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 += sysfs_emit_at(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 += sysfs_emit_at(page, rb, "InitiatorName: %s\n",
542 sess->sess_ops->InitiatorName);
543 rb += sysfs_emit_at(page, rb, "InitiatorAlias: %s\n",
544 sess->sess_ops->InitiatorAlias);
545
546 rb += sysfs_emit_at(page, rb,
547 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",
548 sess->sid, sess->isid, sess->tsih);
549 rb += sysfs_emit_at(page, rb, "SessionType: %s\n",
550 (sess->sess_ops->SessionType) ?
551 "Discovery" : "Normal");
552 rb += sysfs_emit_at(page, rb, "Session State: ");
553 switch (sess->session_state) {
554 case TARG_SESS_STATE_FREE:
555 rb += sysfs_emit_at(page, rb, "TARG_SESS_FREE\n");
556 break;
557 case TARG_SESS_STATE_ACTIVE:
558 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_ACTIVE\n");
559 break;
560 case TARG_SESS_STATE_LOGGED_IN:
561 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_LOGGED_IN\n");
562 break;
563 case TARG_SESS_STATE_FAILED:
564 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_FAILED\n");
565 break;
566 case TARG_SESS_STATE_IN_CONTINUE:
567 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_IN_CONTINUE\n");
568 break;
569 default:
570 rb += sysfs_emit_at(page, rb, "ERROR: Unknown Session"
571 " State!\n");
572 break;
573 }
574
575 rb += sysfs_emit_at(page, rb, "---------------------[iSCSI Session"
576 " Values]-----------------------\n");
577 rb += sysfs_emit_at(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 += sysfs_emit_at(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 += sysfs_emit_at(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 += sysfs_emit_at(page, rb, "CID: %hu Connection"
592 " State: ", conn->cid);
593 switch (conn->conn_state) {
594 case TARG_CONN_STATE_FREE:
595 rb += sysfs_emit_at(page, rb,
596 "TARG_CONN_STATE_FREE\n");
597 break;
598 case TARG_CONN_STATE_XPT_UP:
599 rb += sysfs_emit_at(page, rb,
600 "TARG_CONN_STATE_XPT_UP\n");
601 break;
602 case TARG_CONN_STATE_IN_LOGIN:
603 rb += sysfs_emit_at(page, rb,
604 "TARG_CONN_STATE_IN_LOGIN\n");
605 break;
606 case TARG_CONN_STATE_LOGGED_IN:
607 rb += sysfs_emit_at(page, rb,
608 "TARG_CONN_STATE_LOGGED_IN\n");
609 break;
610 case TARG_CONN_STATE_IN_LOGOUT:
611 rb += sysfs_emit_at(page, rb,
612 "TARG_CONN_STATE_IN_LOGOUT\n");
613 break;
614 case TARG_CONN_STATE_LOGOUT_REQUESTED:
615 rb += sysfs_emit_at(page, rb,
616 "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
617 break;
618 case TARG_CONN_STATE_CLEANUP_WAIT:
619 rb += sysfs_emit_at(page, rb,
620 "TARG_CONN_STATE_CLEANUP_WAIT\n");
621 break;
622 default:
623 rb += sysfs_emit_at(page, rb,
624 "ERROR: Unknown Connection State!\n");
625 break;
626 }
627
628 rb += sysfs_emit_at(page, rb, " Address %pISc %s", &conn->login_sockaddr,
629 (conn->network_transport == ISCSI_TCP) ?
630 "TCP" : "SCTP");
631 rb += sysfs_emit_at(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
641 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
642 char *page)
643 {
644 return sysfs_emit(page, "%u\n", acl_to_nacl(item)->queue_depth);
645 }
646
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
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
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
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 = sysfs_emit(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(generate_node_acls);
787 DEF_TPG_ATTRIB(default_cmdsn_depth);
788 DEF_TPG_ATTRIB(cache_dynamic_acls);
789 DEF_TPG_ATTRIB(demo_mode_write_protect);
790 DEF_TPG_ATTRIB(prod_mode_write_protect);
791 DEF_TPG_ATTRIB(demo_mode_discovery);
792 DEF_TPG_ATTRIB(default_erl);
793 DEF_TPG_ATTRIB(t10_pi);
794 DEF_TPG_ATTRIB(fabric_prot_type);
795 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
796 DEF_TPG_ATTRIB(login_keys_workaround);
797
798 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
799 &iscsi_tpg_attrib_attr_authentication,
800 &iscsi_tpg_attrib_attr_login_timeout,
801 &iscsi_tpg_attrib_attr_generate_node_acls,
802 &iscsi_tpg_attrib_attr_default_cmdsn_depth,
803 &iscsi_tpg_attrib_attr_cache_dynamic_acls,
804 &iscsi_tpg_attrib_attr_demo_mode_write_protect,
805 &iscsi_tpg_attrib_attr_prod_mode_write_protect,
806 &iscsi_tpg_attrib_attr_demo_mode_discovery,
807 &iscsi_tpg_attrib_attr_default_erl,
808 &iscsi_tpg_attrib_attr_t10_pi,
809 &iscsi_tpg_attrib_attr_fabric_prot_type,
810 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
811 &iscsi_tpg_attrib_attr_login_keys_workaround,
812 NULL,
813 };
814
815 /* End items for lio_target_tpg_attrib_cit */
816
817 /* Start items for lio_target_tpg_auth_cit */
818
819 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \
820 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
821 char *page) \
822 { \
823 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
824 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
825 \
826 if (!capable(CAP_SYS_ADMIN)) \
827 return -EPERM; \
828 \
829 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
830 } \
831 \
832 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
833 const char *page, size_t count) \
834 { \
835 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
836 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
837 \
838 if (!capable(CAP_SYS_ADMIN)) \
839 return -EPERM; \
840 \
841 snprintf(auth->name, sizeof(auth->name), "%s", page); \
842 if (!(strncmp("NULL", auth->name, 4))) \
843 auth->naf_flags &= ~flags; \
844 else \
845 auth->naf_flags |= flags; \
846 \
847 if ((auth->naf_flags & NAF_USERID_IN_SET) && \
848 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \
849 auth->authenticate_target = 1; \
850 else \
851 auth->authenticate_target = 0; \
852 \
853 return count; \
854 }
855
856 #define DEF_TPG_AUTH_STR(name, flags) \
857 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
858 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
859 char *page) \
860 { \
861 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
862 } \
863 \
864 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \
865 const char *page, size_t count) \
866 { \
867 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
868 } \
869 \
870 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
871
872
873 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
874 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
875 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
876 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
877
878 #define __DEF_TPG_AUTH_INT(prefix, name) \
879 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
880 char *page) \
881 { \
882 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
883 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
884 \
885 if (!capable(CAP_SYS_ADMIN)) \
886 return -EPERM; \
887 \
888 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
889 }
890
891 #define DEF_TPG_AUTH_INT(name) \
892 __DEF_TPG_AUTH_INT(tpg_auth, name) \
893 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
894 char *page) \
895 { \
896 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
897 } \
898 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
899
900 DEF_TPG_AUTH_INT(authenticate_target);
901
902 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
903 &iscsi_tpg_auth_attr_userid,
904 &iscsi_tpg_auth_attr_password,
905 &iscsi_tpg_auth_attr_authenticate_target,
906 &iscsi_tpg_auth_attr_userid_mutual,
907 &iscsi_tpg_auth_attr_password_mutual,
908 NULL,
909 };
910
911 /* End items for lio_target_tpg_auth_cit */
912
913 /* Start items for lio_target_tpg_param_cit */
914
915 #define DEF_TPG_PARAM(name) \
916 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
917 char *page) \
918 { \
919 struct se_portal_group *se_tpg = param_to_tpg(item); \
920 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
921 struct iscsi_param *param; \
922 ssize_t rb; \
923 \
924 if (iscsit_get_tpg(tpg) < 0) \
925 return -EINVAL; \
926 \
927 param = iscsi_find_param_from_key(__stringify(name), \
928 tpg->param_list); \
929 if (!param) { \
930 iscsit_put_tpg(tpg); \
931 return -EINVAL; \
932 } \
933 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
934 \
935 iscsit_put_tpg(tpg); \
936 return rb; \
937 } \
938 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
939 const char *page, size_t count) \
940 { \
941 struct se_portal_group *se_tpg = param_to_tpg(item); \
942 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \
943 char *buf; \
944 int ret, len; \
945 \
946 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
947 if (!buf) \
948 return -ENOMEM; \
949 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
950 if (isspace(buf[len-1])) \
951 buf[len-1] = '\0'; /* Kill newline */ \
952 \
953 if (iscsit_get_tpg(tpg) < 0) { \
954 kfree(buf); \
955 return -EINVAL; \
956 } \
957 \
958 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
959 if (ret < 0) \
960 goto out; \
961 \
962 kfree(buf); \
963 iscsit_put_tpg(tpg); \
964 return count; \
965 out: \
966 kfree(buf); \
967 iscsit_put_tpg(tpg); \
968 return -EINVAL; \
969 } \
970 CONFIGFS_ATTR(iscsi_tpg_param_, name)
971
972 DEF_TPG_PARAM(AuthMethod);
973 DEF_TPG_PARAM(HeaderDigest);
974 DEF_TPG_PARAM(DataDigest);
975 DEF_TPG_PARAM(MaxConnections);
976 DEF_TPG_PARAM(TargetAlias);
977 DEF_TPG_PARAM(InitialR2T);
978 DEF_TPG_PARAM(ImmediateData);
979 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
980 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
981 DEF_TPG_PARAM(MaxBurstLength);
982 DEF_TPG_PARAM(FirstBurstLength);
983 DEF_TPG_PARAM(DefaultTime2Wait);
984 DEF_TPG_PARAM(DefaultTime2Retain);
985 DEF_TPG_PARAM(MaxOutstandingR2T);
986 DEF_TPG_PARAM(DataPDUInOrder);
987 DEF_TPG_PARAM(DataSequenceInOrder);
988 DEF_TPG_PARAM(ErrorRecoveryLevel);
989 DEF_TPG_PARAM(IFMarker);
990 DEF_TPG_PARAM(OFMarker);
991 DEF_TPG_PARAM(IFMarkInt);
992 DEF_TPG_PARAM(OFMarkInt);
993
994 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
995 &iscsi_tpg_param_attr_AuthMethod,
996 &iscsi_tpg_param_attr_HeaderDigest,
997 &iscsi_tpg_param_attr_DataDigest,
998 &iscsi_tpg_param_attr_MaxConnections,
999 &iscsi_tpg_param_attr_TargetAlias,
1000 &iscsi_tpg_param_attr_InitialR2T,
1001 &iscsi_tpg_param_attr_ImmediateData,
1002 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
1003 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
1004 &iscsi_tpg_param_attr_MaxBurstLength,
1005 &iscsi_tpg_param_attr_FirstBurstLength,
1006 &iscsi_tpg_param_attr_DefaultTime2Wait,
1007 &iscsi_tpg_param_attr_DefaultTime2Retain,
1008 &iscsi_tpg_param_attr_MaxOutstandingR2T,
1009 &iscsi_tpg_param_attr_DataPDUInOrder,
1010 &iscsi_tpg_param_attr_DataSequenceInOrder,
1011 &iscsi_tpg_param_attr_ErrorRecoveryLevel,
1012 &iscsi_tpg_param_attr_IFMarker,
1013 &iscsi_tpg_param_attr_OFMarker,
1014 &iscsi_tpg_param_attr_IFMarkInt,
1015 &iscsi_tpg_param_attr_OFMarkInt,
1016 NULL,
1017 };
1018
1019 /* End items for lio_target_tpg_param_cit */
1020
1021 /* Start items for lio_target_tpg_cit */
1022
1023 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1024 char *page)
1025 {
1026 return target_show_dynamic_sessions(to_tpg(item), page);
1027 }
1028
1029 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1030
1031 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1032 &lio_target_tpg_attr_dynamic_sessions,
1033 NULL,
1034 };
1035
1036 /* End items for lio_target_tpg_cit */
1037
1038 /* Start items for lio_target_tiqn_cit */
1039
1040 static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,
1041 const char *name)
1042 {
1043 struct iscsi_portal_group *tpg;
1044 struct iscsi_tiqn *tiqn;
1045 char *tpgt_str;
1046 int ret;
1047 u16 tpgt;
1048
1049 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1050 /*
1051 * Only tpgt_# directory groups can be created below
1052 * target/iscsi/iqn.superturodiskarry/
1053 */
1054 tpgt_str = strstr(name, "tpgt_");
1055 if (!tpgt_str) {
1056 pr_err("Unable to locate \"tpgt_#\" directory"
1057 " group\n");
1058 return NULL;
1059 }
1060 tpgt_str += 5; /* Skip ahead of "tpgt_" */
1061 ret = kstrtou16(tpgt_str, 0, &tpgt);
1062 if (ret)
1063 return NULL;
1064
1065 tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1066 if (!tpg)
1067 return NULL;
1068
1069 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1070 if (ret < 0)
1071 goto free_out;
1072
1073 ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1074 if (ret != 0)
1075 goto out;
1076
1077 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1078 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1079 name);
1080 return &tpg->tpg_se_tpg;
1081 out:
1082 core_tpg_deregister(&tpg->tpg_se_tpg);
1083 free_out:
1084 kfree(tpg);
1085 return NULL;
1086 }
1087
1088 static int lio_target_tiqn_enabletpg(struct se_portal_group *se_tpg,
1089 bool enable)
1090 {
1091 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
1092 int ret;
1093
1094 ret = iscsit_get_tpg(tpg);
1095 if (ret < 0)
1096 return -EINVAL;
1097
1098 if (enable) {
1099 ret = iscsit_tpg_enable_portal_group(tpg);
1100 if (ret < 0)
1101 goto out;
1102 } else {
1103 /*
1104 * iscsit_tpg_disable_portal_group() assumes force=1
1105 */
1106 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1107 if (ret < 0)
1108 goto out;
1109 }
1110
1111 iscsit_put_tpg(tpg);
1112 return 0;
1113 out:
1114 iscsit_put_tpg(tpg);
1115 return -EINVAL;
1116 }
1117
1118 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1119 {
1120 struct iscsi_portal_group *tpg;
1121 struct iscsi_tiqn *tiqn;
1122
1123 tpg = to_iscsi_tpg(se_tpg);
1124 tiqn = tpg->tpg_tiqn;
1125 /*
1126 * iscsit_tpg_del_portal_group() assumes force=1
1127 */
1128 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1129 iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1130 }
1131
1132 /* End items for lio_target_tiqn_cit */
1133
1134 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1135
1136 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1137 char *page)
1138 {
1139 return sysfs_emit(page, "Datera Inc. iSCSI Target %s\n", ISCSIT_VERSION);
1140 }
1141
1142 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1143
1144 static ssize_t lio_target_wwn_cpus_allowed_list_show(
1145 struct config_item *item, char *page)
1146 {
1147 return sysfs_emit(page, "%*pbl\n",
1148 cpumask_pr_args(iscsit_global->allowed_cpumask));
1149 }
1150
1151 static ssize_t lio_target_wwn_cpus_allowed_list_store(
1152 struct config_item *item, const char *page, size_t count)
1153 {
1154 int ret = -ENOMEM;
1155 char *orig;
1156 cpumask_var_t new_allowed_cpumask;
1157
1158 if (!zalloc_cpumask_var(&new_allowed_cpumask, GFP_KERNEL))
1159 goto out;
1160
1161 orig = kstrdup(page, GFP_KERNEL);
1162 if (!orig)
1163 goto out_free_cpumask;
1164
1165 ret = cpulist_parse(orig, new_allowed_cpumask);
1166 if (!ret)
1167 cpumask_copy(iscsit_global->allowed_cpumask,
1168 new_allowed_cpumask);
1169
1170 kfree(orig);
1171 out_free_cpumask:
1172 free_cpumask_var(new_allowed_cpumask);
1173 out:
1174 return ret ? ret : count;
1175 }
1176
1177 CONFIGFS_ATTR(lio_target_wwn_, cpus_allowed_list);
1178
1179 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1180 &lio_target_wwn_attr_lio_version,
1181 &lio_target_wwn_attr_cpus_allowed_list,
1182 NULL,
1183 };
1184
1185 static struct se_wwn *lio_target_call_coreaddtiqn(
1186 struct target_fabric_configfs *tf,
1187 struct config_group *group,
1188 const char *name)
1189 {
1190 struct iscsi_tiqn *tiqn;
1191
1192 tiqn = iscsit_add_tiqn((unsigned char *)name);
1193 if (IS_ERR(tiqn))
1194 return ERR_CAST(tiqn);
1195
1196 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1197 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1198 " %s\n", name);
1199 return &tiqn->tiqn_wwn;
1200 }
1201
1202 static void lio_target_add_wwn_groups(struct se_wwn *wwn)
1203 {
1204 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1205
1206 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1207 "iscsi_instance", &iscsi_stat_instance_cit);
1208 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1209 &tiqn->tiqn_wwn.fabric_stat_group);
1210
1211 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1212 "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1213 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1214 &tiqn->tiqn_wwn.fabric_stat_group);
1215
1216 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1217 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1218 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1219 &tiqn->tiqn_wwn.fabric_stat_group);
1220
1221 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1222 "iscsi_login_stats", &iscsi_stat_login_cit);
1223 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1224 &tiqn->tiqn_wwn.fabric_stat_group);
1225
1226 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1227 "iscsi_logout_stats", &iscsi_stat_logout_cit);
1228 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1229 &tiqn->tiqn_wwn.fabric_stat_group);
1230 }
1231
1232 static void lio_target_call_coredeltiqn(
1233 struct se_wwn *wwn)
1234 {
1235 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1236
1237 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1238 tiqn->tiqn);
1239 iscsit_del_tiqn(tiqn);
1240 }
1241
1242 /* End LIO-Target TIQN struct contig_lio_target_cit */
1243
1244 /* Start lio_target_discovery_auth_cit */
1245
1246 #define DEF_DISC_AUTH_STR(name, flags) \
1247 __DEF_NACL_AUTH_STR(disc, name, flags) \
1248 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1249 { \
1250 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1251 page); \
1252 } \
1253 static ssize_t iscsi_disc_##name##_store(struct config_item *item, \
1254 const char *page, size_t count) \
1255 { \
1256 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \
1257 page, count); \
1258 \
1259 } \
1260 CONFIGFS_ATTR(iscsi_disc_, name)
1261
1262 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1263 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1264 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1265 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1266
1267 #define DEF_DISC_AUTH_INT(name) \
1268 __DEF_NACL_AUTH_INT(disc, name) \
1269 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1270 { \
1271 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1272 page); \
1273 } \
1274 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1275
1276 DEF_DISC_AUTH_INT(authenticate_target);
1277
1278
1279 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1280 char *page)
1281 {
1282 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1283
1284 return sysfs_emit(page, "%d\n", discovery_auth->enforce_discovery_auth);
1285 }
1286
1287 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1288 const char *page, size_t count)
1289 {
1290 struct iscsi_param *param;
1291 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1292 u32 op;
1293 int err;
1294
1295 err = kstrtou32(page, 0, &op);
1296 if (err)
1297 return -EINVAL;
1298 if ((op != 1) && (op != 0)) {
1299 pr_err("Illegal value for enforce_discovery_auth:"
1300 " %u\n", op);
1301 return -EINVAL;
1302 }
1303
1304 if (!discovery_tpg) {
1305 pr_err("iscsit_global->discovery_tpg is NULL\n");
1306 return -EINVAL;
1307 }
1308
1309 param = iscsi_find_param_from_key(AUTHMETHOD,
1310 discovery_tpg->param_list);
1311 if (!param)
1312 return -EINVAL;
1313
1314 if (op) {
1315 /*
1316 * Reset the AuthMethod key to CHAP.
1317 */
1318 if (iscsi_update_param_value(param, CHAP) < 0)
1319 return -EINVAL;
1320
1321 discovery_tpg->tpg_attrib.authentication = 1;
1322 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1323 pr_debug("LIO-CORE[0] Successfully enabled"
1324 " authentication enforcement for iSCSI"
1325 " Discovery TPG\n");
1326 } else {
1327 /*
1328 * Reset the AuthMethod key to CHAP,None
1329 */
1330 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1331 return -EINVAL;
1332
1333 discovery_tpg->tpg_attrib.authentication = 0;
1334 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1335 pr_debug("LIO-CORE[0] Successfully disabled"
1336 " authentication enforcement for iSCSI"
1337 " Discovery TPG\n");
1338 }
1339
1340 return count;
1341 }
1342
1343 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1344
1345 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1346 &iscsi_disc_attr_userid,
1347 &iscsi_disc_attr_password,
1348 &iscsi_disc_attr_authenticate_target,
1349 &iscsi_disc_attr_userid_mutual,
1350 &iscsi_disc_attr_password_mutual,
1351 &iscsi_disc_attr_enforce_discovery_auth,
1352 NULL,
1353 };
1354
1355 /* End lio_target_discovery_auth_cit */
1356
1357 /* Start functions for target_core_fabric_ops */
1358
1359 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1360 {
1361 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1362
1363 return cmd->i_state;
1364 }
1365
1366 static u32 lio_sess_get_index(struct se_session *se_sess)
1367 {
1368 struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1369
1370 return sess->session_index;
1371 }
1372
1373 static u32 lio_sess_get_initiator_sid(
1374 struct se_session *se_sess,
1375 unsigned char *buf,
1376 u32 size)
1377 {
1378 struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1379 /*
1380 * iSCSI Initiator Session Identifier from RFC-3720.
1381 */
1382 return snprintf(buf, size, "%6phN", sess->isid);
1383 }
1384
1385 static int lio_queue_data_in(struct se_cmd *se_cmd)
1386 {
1387 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1388 struct iscsit_conn *conn = cmd->conn;
1389
1390 cmd->i_state = ISTATE_SEND_DATAIN;
1391 return conn->conn_transport->iscsit_queue_data_in(conn, cmd);
1392 }
1393
1394 static int lio_write_pending(struct se_cmd *se_cmd)
1395 {
1396 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1397 struct iscsit_conn *conn = cmd->conn;
1398
1399 if (!cmd->immediate_data && !cmd->unsolicited_data)
1400 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1401
1402 return 0;
1403 }
1404
1405 static int lio_queue_status(struct se_cmd *se_cmd)
1406 {
1407 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1408 struct iscsit_conn *conn = cmd->conn;
1409
1410 cmd->i_state = ISTATE_SEND_STATUS;
1411
1412 if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1413 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
1414 }
1415 return conn->conn_transport->iscsit_queue_status(conn, cmd);
1416 }
1417
1418 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1419 {
1420 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1421
1422 cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1423 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1424 }
1425
1426 static void lio_aborted_task(struct se_cmd *se_cmd)
1427 {
1428 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1429
1430 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1431 }
1432
1433 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1434 {
1435 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1436 }
1437
1438 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1439 {
1440 return to_iscsi_tpg(se_tpg)->tpgt;
1441 }
1442
1443 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1444 {
1445 return to_iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1446 }
1447
1448 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1449 {
1450 return to_iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1451 }
1452
1453 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1454 {
1455 return to_iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1456 }
1457
1458 static int lio_tpg_check_demo_mode_write_protect(
1459 struct se_portal_group *se_tpg)
1460 {
1461 return to_iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1462 }
1463
1464 static int lio_tpg_check_prod_mode_write_protect(
1465 struct se_portal_group *se_tpg)
1466 {
1467 return to_iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1468 }
1469
1470 static int lio_tpg_check_prot_fabric_only(
1471 struct se_portal_group *se_tpg)
1472 {
1473 /*
1474 * Only report fabric_prot_type if t10_pi has also been enabled
1475 * for incoming ib_isert sessions.
1476 */
1477 if (!to_iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1478 return 0;
1479 return to_iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1480 }
1481
1482 /*
1483 * This function calls iscsit_inc_session_usage_count() on the
1484 * struct iscsit_session in question.
1485 */
1486 static void lio_tpg_close_session(struct se_session *se_sess)
1487 {
1488 struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1489 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
1490
1491 spin_lock_bh(&se_tpg->session_lock);
1492 spin_lock(&sess->conn_lock);
1493 if (atomic_read(&sess->session_fall_back_to_erl0) ||
1494 atomic_read(&sess->session_logout) ||
1495 atomic_read(&sess->session_close) ||
1496 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1497 spin_unlock(&sess->conn_lock);
1498 spin_unlock_bh(&se_tpg->session_lock);
1499 return;
1500 }
1501 iscsit_inc_session_usage_count(sess);
1502 atomic_set(&sess->session_reinstatement, 1);
1503 atomic_set(&sess->session_fall_back_to_erl0, 1);
1504 atomic_set(&sess->session_close, 1);
1505 spin_unlock(&sess->conn_lock);
1506
1507 iscsit_stop_time2retain_timer(sess);
1508 spin_unlock_bh(&se_tpg->session_lock);
1509
1510 iscsit_stop_session(sess, 1, 1);
1511 iscsit_dec_session_usage_count(sess);
1512 }
1513
1514 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1515 {
1516 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1517 }
1518
1519 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1520 {
1521 struct iscsi_node_acl *acl = to_iscsi_nacl(se_acl);
1522 struct se_portal_group *se_tpg = se_acl->se_tpg;
1523 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
1524
1525 acl->node_attrib.nacl = acl;
1526 iscsit_set_default_node_attribues(acl, tpg);
1527 }
1528
1529 static int lio_check_stop_free(struct se_cmd *se_cmd)
1530 {
1531 return target_put_sess_cmd(se_cmd);
1532 }
1533
1534 static void lio_release_cmd(struct se_cmd *se_cmd)
1535 {
1536 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1537
1538 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1539 iscsit_release_cmd(cmd);
1540 }
1541
1542 const struct target_core_fabric_ops iscsi_ops = {
1543 .module = THIS_MODULE,
1544 .fabric_alias = "iscsi",
1545 .fabric_name = "iSCSI",
1546 .node_acl_size = sizeof(struct iscsi_node_acl),
1547 .tpg_get_wwn = lio_tpg_get_endpoint_wwn,
1548 .tpg_get_tag = lio_tpg_get_tag,
1549 .tpg_get_default_depth = lio_tpg_get_default_depth,
1550 .tpg_check_demo_mode = lio_tpg_check_demo_mode,
1551 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
1552 .tpg_check_demo_mode_write_protect =
1553 lio_tpg_check_demo_mode_write_protect,
1554 .tpg_check_prod_mode_write_protect =
1555 lio_tpg_check_prod_mode_write_protect,
1556 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
1557 .tpg_get_inst_index = lio_tpg_get_inst_index,
1558 .check_stop_free = lio_check_stop_free,
1559 .release_cmd = lio_release_cmd,
1560 .close_session = lio_tpg_close_session,
1561 .sess_get_index = lio_sess_get_index,
1562 .sess_get_initiator_sid = lio_sess_get_initiator_sid,
1563 .write_pending = lio_write_pending,
1564 .set_default_node_attributes = lio_set_default_node_attributes,
1565 .get_cmd_state = iscsi_get_cmd_state,
1566 .queue_data_in = lio_queue_data_in,
1567 .queue_status = lio_queue_status,
1568 .queue_tm_rsp = lio_queue_tm_rsp,
1569 .aborted_task = lio_aborted_task,
1570 .fabric_make_wwn = lio_target_call_coreaddtiqn,
1571 .fabric_drop_wwn = lio_target_call_coredeltiqn,
1572 .add_wwn_groups = lio_target_add_wwn_groups,
1573 .fabric_make_tpg = lio_target_tiqn_addtpg,
1574 .fabric_enable_tpg = lio_target_tiqn_enabletpg,
1575 .fabric_drop_tpg = lio_target_tiqn_deltpg,
1576 .fabric_make_np = lio_target_call_addnptotpg,
1577 .fabric_drop_np = lio_target_call_delnpfromtpg,
1578 .fabric_init_nodeacl = lio_target_init_nodeacl,
1579
1580 .tfc_discovery_attrs = lio_target_discovery_auth_attrs,
1581 .tfc_wwn_attrs = lio_target_wwn_attrs,
1582 .tfc_tpg_base_attrs = lio_target_tpg_attrs,
1583 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
1584 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
1585 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
1586 .tfc_tpg_np_base_attrs = lio_target_portal_attrs,
1587 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
1588 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
1589 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
1590 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
1591
1592 .write_pending_must_be_called = 1,
1593
1594 .default_submit_type = TARGET_DIRECT_SUBMIT,
1595 .direct_submit_supp = 1,
1596 };
Kernel DRM miscellaneous fixes and cross-tree changes