iscsi_target_configfs.c 45 KB

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