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