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