1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /******************************************************************************* 3 * This file contains the configfs implementation for iSCSI Target mode 4 * from the LIO-Target Project. 5 * 6 * (c) Copyright 2007-2013 Datera, Inc. 7 * 8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 9 * 10 ****************************************************************************/ 11 12 #include <linux/configfs.h> 13 #include <linux/ctype.h> 14 #include <linux/export.h> 15 #include <linux/inet.h> 16 #include <linux/module.h> 17 #include <net/ipv6.h> 18 #include <target/target_core_base.h> 19 #include <target/target_core_fabric.h> 20 #include <target/iscsi/iscsi_transport.h> 21 #include <target/iscsi/iscsi_target_core.h> 22 #include "iscsi_target_parameters.h" 23 #include "iscsi_target_device.h" 24 #include "iscsi_target_erl0.h" 25 #include "iscsi_target_nodeattrib.h" 26 #include "iscsi_target_tpg.h" 27 #include "iscsi_target_util.h" 28 #include "iscsi_target.h" 29 #include <target/iscsi/iscsi_target_stat.h> 30 31 32 /* Start items for lio_target_portal_cit */ 33 34 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item) 35 { 36 return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np); 37 } 38 39 static ssize_t lio_target_np_driver_show(struct config_item *item, char *page, 40 enum iscsit_transport_type type) 41 { 42 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 43 struct iscsi_tpg_np *tpg_np_new; 44 ssize_t rb; 45 46 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type); 47 if (tpg_np_new) 48 rb = sysfs_emit(page, "1\n"); 49 else 50 rb = sysfs_emit(page, "0\n"); 51 52 return rb; 53 } 54 55 static ssize_t lio_target_np_driver_store(struct config_item *item, 56 const char *page, size_t count, enum iscsit_transport_type type, 57 const char *mod_name) 58 { 59 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 60 struct iscsi_np *np; 61 struct iscsi_portal_group *tpg; 62 struct iscsi_tpg_np *tpg_np_new = NULL; 63 u32 op; 64 int rc; 65 66 rc = kstrtou32(page, 0, &op); 67 if (rc) 68 return rc; 69 if ((op != 1) && (op != 0)) { 70 pr_err("Illegal value for tpg_enable: %u\n", op); 71 return -EINVAL; 72 } 73 np = tpg_np->tpg_np; 74 if (!np) { 75 pr_err("Unable to locate struct iscsi_np from" 76 " struct iscsi_tpg_np\n"); 77 return -EINVAL; 78 } 79 80 tpg = tpg_np->tpg; 81 if (iscsit_get_tpg(tpg) < 0) 82 return -EINVAL; 83 84 if (op) { 85 if (strlen(mod_name)) { 86 rc = request_module(mod_name); 87 if (rc != 0) { 88 pr_warn("Unable to request_module for %s\n", 89 mod_name); 90 rc = 0; 91 } 92 } 93 94 tpg_np_new = iscsit_tpg_add_network_portal(tpg, 95 &np->np_sockaddr, tpg_np, type); 96 if (IS_ERR(tpg_np_new)) { 97 rc = PTR_ERR(tpg_np_new); 98 goto out; 99 } 100 } else { 101 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type); 102 if (tpg_np_new) { 103 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_new); 104 if (rc < 0) 105 goto out; 106 } 107 } 108 109 iscsit_put_tpg(tpg); 110 return count; 111 out: 112 iscsit_put_tpg(tpg); 113 return rc; 114 } 115 116 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page) 117 { 118 return lio_target_np_driver_show(item, page, ISCSI_INFINIBAND); 119 } 120 121 static ssize_t lio_target_np_iser_store(struct config_item *item, 122 const char *page, size_t count) 123 { 124 return lio_target_np_driver_store(item, page, count, 125 ISCSI_INFINIBAND, "ib_isert"); 126 } 127 CONFIGFS_ATTR(lio_target_np_, iser); 128 129 static ssize_t lio_target_np_cxgbit_show(struct config_item *item, char *page) 130 { 131 return lio_target_np_driver_show(item, page, ISCSI_CXGBIT); 132 } 133 134 static ssize_t lio_target_np_cxgbit_store(struct config_item *item, 135 const char *page, size_t count) 136 { 137 return lio_target_np_driver_store(item, page, count, 138 ISCSI_CXGBIT, "cxgbit"); 139 } 140 CONFIGFS_ATTR(lio_target_np_, cxgbit); 141 142 static struct configfs_attribute *lio_target_portal_attrs[] = { 143 &lio_target_np_attr_iser, 144 &lio_target_np_attr_cxgbit, 145 NULL, 146 }; 147 148 /* Stop items for lio_target_portal_cit */ 149 150 /* Start items for lio_target_np_cit */ 151 152 #define MAX_PORTAL_LEN 256 153 154 static struct se_tpg_np *lio_target_call_addnptotpg( 155 struct se_portal_group *se_tpg, 156 struct config_group *group, 157 const char *name) 158 { 159 struct iscsi_portal_group *tpg; 160 struct iscsi_tpg_np *tpg_np; 161 char *str, *str2, *ip_str, *port_str; 162 struct sockaddr_storage sockaddr = { }; 163 int ret; 164 char buf[MAX_PORTAL_LEN + 1] = { }; 165 166 if (strlen(name) > MAX_PORTAL_LEN) { 167 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n", 168 (int)strlen(name), MAX_PORTAL_LEN); 169 return ERR_PTR(-EOVERFLOW); 170 } 171 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name); 172 173 str = strstr(buf, "["); 174 if (str) { 175 str2 = strstr(str, "]"); 176 if (!str2) { 177 pr_err("Unable to locate trailing \"]\"" 178 " in IPv6 iSCSI network portal address\n"); 179 return ERR_PTR(-EINVAL); 180 } 181 182 ip_str = str + 1; /* Skip over leading "[" */ 183 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */ 184 str2++; /* Skip over the \0 */ 185 186 port_str = strstr(str2, ":"); 187 if (!port_str) { 188 pr_err("Unable to locate \":port\"" 189 " in IPv6 iSCSI network portal address\n"); 190 return ERR_PTR(-EINVAL); 191 } 192 *port_str = '\0'; /* Terminate string for IP */ 193 port_str++; /* Skip over ":" */ 194 } else { 195 ip_str = &buf[0]; 196 port_str = strstr(ip_str, ":"); 197 if (!port_str) { 198 pr_err("Unable to locate \":port\"" 199 " in IPv4 iSCSI network portal address\n"); 200 return ERR_PTR(-EINVAL); 201 } 202 *port_str = '\0'; /* Terminate string for IP */ 203 port_str++; /* Skip over ":" */ 204 } 205 206 ret = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str, 207 port_str, &sockaddr); 208 if (ret) { 209 pr_err("malformed ip/port passed: %s\n", name); 210 return ERR_PTR(ret); 211 } 212 213 tpg = to_iscsi_tpg(se_tpg); 214 ret = iscsit_get_tpg(tpg); 215 if (ret < 0) 216 return ERR_PTR(-EINVAL); 217 218 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu" 219 " PORTAL: %s\n", 220 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 221 tpg->tpgt, name); 222 /* 223 * Assume ISCSI_TCP by default. Other network portals for other 224 * iSCSI fabrics: 225 * 226 * Traditional iSCSI over SCTP (initial support) 227 * iSER/TCP (TODO, hardware available) 228 * iSER/SCTP (TODO, software emulation with osc-iwarp) 229 * iSER/IB (TODO, hardware available) 230 * 231 * can be enabled with attributes under 232 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/ 233 * 234 */ 235 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL, 236 ISCSI_TCP); 237 if (IS_ERR(tpg_np)) { 238 iscsit_put_tpg(tpg); 239 return ERR_CAST(tpg_np); 240 } 241 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n"); 242 243 iscsit_put_tpg(tpg); 244 return &tpg_np->se_tpg_np; 245 } 246 247 static void lio_target_call_delnpfromtpg( 248 struct se_tpg_np *se_tpg_np) 249 { 250 struct iscsi_portal_group *tpg; 251 struct iscsi_tpg_np *tpg_np; 252 struct se_portal_group *se_tpg; 253 int ret; 254 255 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np); 256 tpg = tpg_np->tpg; 257 ret = iscsit_get_tpg(tpg); 258 if (ret < 0) 259 return; 260 261 se_tpg = &tpg->tpg_se_tpg; 262 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu" 263 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 264 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr); 265 266 ret = iscsit_tpg_del_network_portal(tpg, tpg_np); 267 if (ret < 0) 268 goto out; 269 270 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n"); 271 out: 272 iscsit_put_tpg(tpg); 273 } 274 275 /* End items for lio_target_np_cit */ 276 277 /* Start items for lio_target_nacl_attrib_cit */ 278 279 #define ISCSI_NACL_ATTR(name) \ 280 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\ 281 char *page) \ 282 { \ 283 struct se_node_acl *se_nacl = attrib_to_nacl(item); \ 284 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \ 285 return sysfs_emit(page, "%u\n", nacl->node_attrib.name); \ 286 } \ 287 \ 288 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\ 289 const char *page, size_t count) \ 290 { \ 291 struct se_node_acl *se_nacl = attrib_to_nacl(item); \ 292 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); \ 293 u32 val; \ 294 int ret; \ 295 \ 296 ret = kstrtou32(page, 0, &val); \ 297 if (ret) \ 298 return ret; \ 299 ret = iscsit_na_##name(nacl, val); \ 300 if (ret < 0) \ 301 return ret; \ 302 \ 303 return count; \ 304 } \ 305 \ 306 CONFIGFS_ATTR(iscsi_nacl_attrib_, name) 307 308 ISCSI_NACL_ATTR(dataout_timeout); 309 ISCSI_NACL_ATTR(dataout_timeout_retries); 310 ISCSI_NACL_ATTR(default_erl); 311 ISCSI_NACL_ATTR(nopin_timeout); 312 ISCSI_NACL_ATTR(nopin_response_timeout); 313 ISCSI_NACL_ATTR(random_datain_pdu_offsets); 314 ISCSI_NACL_ATTR(random_datain_seq_offsets); 315 ISCSI_NACL_ATTR(random_r2t_offsets); 316 317 static ssize_t iscsi_nacl_attrib_authentication_show(struct config_item *item, 318 char *page) 319 { 320 struct se_node_acl *se_nacl = attrib_to_nacl(item); 321 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); 322 323 return sysfs_emit(page, "%d\n", nacl->node_attrib.authentication); 324 } 325 326 static ssize_t iscsi_nacl_attrib_authentication_store(struct config_item *item, 327 const char *page, size_t count) 328 { 329 struct se_node_acl *se_nacl = attrib_to_nacl(item); 330 struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl); 331 s32 val; 332 int ret; 333 334 ret = kstrtos32(page, 0, &val); 335 if (ret) 336 return ret; 337 if (val != 0 && val != 1 && val != NA_AUTHENTICATION_INHERITED) 338 return -EINVAL; 339 340 nacl->node_attrib.authentication = val; 341 342 return count; 343 } 344 345 CONFIGFS_ATTR(iscsi_nacl_attrib_, authentication); 346 347 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = { 348 &iscsi_nacl_attrib_attr_dataout_timeout, 349 &iscsi_nacl_attrib_attr_dataout_timeout_retries, 350 &iscsi_nacl_attrib_attr_default_erl, 351 &iscsi_nacl_attrib_attr_nopin_timeout, 352 &iscsi_nacl_attrib_attr_nopin_response_timeout, 353 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets, 354 &iscsi_nacl_attrib_attr_random_datain_seq_offsets, 355 &iscsi_nacl_attrib_attr_random_r2t_offsets, 356 &iscsi_nacl_attrib_attr_authentication, 357 NULL, 358 }; 359 360 /* End items for lio_target_nacl_attrib_cit */ 361 362 /* Start items for lio_target_nacl_auth_cit */ 363 364 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \ 365 static ssize_t __iscsi_##prefix##_##name##_show( \ 366 struct iscsi_node_acl *nacl, \ 367 char *page) \ 368 { \ 369 struct iscsi_node_auth *auth = &nacl->node_auth; \ 370 \ 371 if (!capable(CAP_SYS_ADMIN)) \ 372 return -EPERM; \ 373 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 374 } \ 375 \ 376 static ssize_t __iscsi_##prefix##_##name##_store( \ 377 struct iscsi_node_acl *nacl, \ 378 const char *page, \ 379 size_t count) \ 380 { \ 381 struct iscsi_node_auth *auth = &nacl->node_auth; \ 382 \ 383 if (!capable(CAP_SYS_ADMIN)) \ 384 return -EPERM; \ 385 if (count >= sizeof(auth->name)) \ 386 return -EINVAL; \ 387 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 388 if (!strncmp("NULL", auth->name, 4)) \ 389 auth->naf_flags &= ~flags; \ 390 else \ 391 auth->naf_flags |= flags; \ 392 \ 393 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 394 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 395 auth->authenticate_target = 1; \ 396 else \ 397 auth->authenticate_target = 0; \ 398 \ 399 return count; \ 400 } 401 402 #define DEF_NACL_AUTH_STR(name, flags) \ 403 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \ 404 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \ 405 char *page) \ 406 { \ 407 struct se_node_acl *nacl = auth_to_nacl(item); \ 408 return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \ 409 } \ 410 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \ 411 const char *page, size_t count) \ 412 { \ 413 struct se_node_acl *nacl = auth_to_nacl(item); \ 414 return __iscsi_nacl_auth_##name##_store(to_iscsi_nacl(nacl), \ 415 page, count); \ 416 } \ 417 \ 418 CONFIGFS_ATTR(iscsi_nacl_auth_, name) 419 420 /* 421 * One-way authentication userid 422 */ 423 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET); 424 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET); 425 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 426 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 427 428 #define __DEF_NACL_AUTH_INT(prefix, name) \ 429 static ssize_t __iscsi_##prefix##_##name##_show( \ 430 struct iscsi_node_acl *nacl, \ 431 char *page) \ 432 { \ 433 struct iscsi_node_auth *auth = &nacl->node_auth; \ 434 \ 435 if (!capable(CAP_SYS_ADMIN)) \ 436 return -EPERM; \ 437 \ 438 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 439 } 440 441 #define DEF_NACL_AUTH_INT(name) \ 442 __DEF_NACL_AUTH_INT(nacl_auth, name) \ 443 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \ 444 char *page) \ 445 { \ 446 struct se_node_acl *nacl = auth_to_nacl(item); \ 447 return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page); \ 448 } \ 449 \ 450 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name) 451 452 DEF_NACL_AUTH_INT(authenticate_target); 453 454 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = { 455 &iscsi_nacl_auth_attr_userid, 456 &iscsi_nacl_auth_attr_password, 457 &iscsi_nacl_auth_attr_authenticate_target, 458 &iscsi_nacl_auth_attr_userid_mutual, 459 &iscsi_nacl_auth_attr_password_mutual, 460 NULL, 461 }; 462 463 /* End items for lio_target_nacl_auth_cit */ 464 465 /* Start items for lio_target_nacl_param_cit */ 466 467 #define ISCSI_NACL_PARAM(name) \ 468 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \ 469 char *page) \ 470 { \ 471 struct se_node_acl *se_nacl = param_to_nacl(item); \ 472 struct iscsit_session *sess; \ 473 struct se_session *se_sess; \ 474 ssize_t rb; \ 475 \ 476 spin_lock_bh(&se_nacl->nacl_sess_lock); \ 477 se_sess = se_nacl->nacl_sess; \ 478 if (!se_sess) { \ 479 rb = snprintf(page, PAGE_SIZE, \ 480 "No Active iSCSI Session\n"); \ 481 } else { \ 482 sess = se_sess->fabric_sess_ptr; \ 483 rb = snprintf(page, PAGE_SIZE, "%u\n", \ 484 (u32)sess->sess_ops->name); \ 485 } \ 486 spin_unlock_bh(&se_nacl->nacl_sess_lock); \ 487 \ 488 return rb; \ 489 } \ 490 \ 491 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name) 492 493 ISCSI_NACL_PARAM(MaxConnections); 494 ISCSI_NACL_PARAM(InitialR2T); 495 ISCSI_NACL_PARAM(ImmediateData); 496 ISCSI_NACL_PARAM(MaxBurstLength); 497 ISCSI_NACL_PARAM(FirstBurstLength); 498 ISCSI_NACL_PARAM(DefaultTime2Wait); 499 ISCSI_NACL_PARAM(DefaultTime2Retain); 500 ISCSI_NACL_PARAM(MaxOutstandingR2T); 501 ISCSI_NACL_PARAM(DataPDUInOrder); 502 ISCSI_NACL_PARAM(DataSequenceInOrder); 503 ISCSI_NACL_PARAM(ErrorRecoveryLevel); 504 505 static struct configfs_attribute *lio_target_nacl_param_attrs[] = { 506 &iscsi_nacl_param_attr_MaxConnections, 507 &iscsi_nacl_param_attr_InitialR2T, 508 &iscsi_nacl_param_attr_ImmediateData, 509 &iscsi_nacl_param_attr_MaxBurstLength, 510 &iscsi_nacl_param_attr_FirstBurstLength, 511 &iscsi_nacl_param_attr_DefaultTime2Wait, 512 &iscsi_nacl_param_attr_DefaultTime2Retain, 513 &iscsi_nacl_param_attr_MaxOutstandingR2T, 514 &iscsi_nacl_param_attr_DataPDUInOrder, 515 &iscsi_nacl_param_attr_DataSequenceInOrder, 516 &iscsi_nacl_param_attr_ErrorRecoveryLevel, 517 NULL, 518 }; 519 520 /* End items for lio_target_nacl_param_cit */ 521 522 /* Start items for lio_target_acl_cit */ 523 524 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page) 525 { 526 struct se_node_acl *se_nacl = acl_to_nacl(item); 527 struct iscsit_session *sess; 528 struct iscsit_conn *conn; 529 struct se_session *se_sess; 530 ssize_t rb = 0; 531 u32 max_cmd_sn; 532 533 spin_lock_bh(&se_nacl->nacl_sess_lock); 534 se_sess = se_nacl->nacl_sess; 535 if (!se_sess) { 536 rb += sysfs_emit_at(page, rb, "No active iSCSI Session for Initiator" 537 " Endpoint: %s\n", se_nacl->initiatorname); 538 } else { 539 sess = se_sess->fabric_sess_ptr; 540 541 rb += sysfs_emit_at(page, rb, "InitiatorName: %s\n", 542 sess->sess_ops->InitiatorName); 543 rb += sysfs_emit_at(page, rb, "InitiatorAlias: %s\n", 544 sess->sess_ops->InitiatorAlias); 545 546 rb += sysfs_emit_at(page, rb, 547 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ", 548 sess->sid, sess->isid, sess->tsih); 549 rb += sysfs_emit_at(page, rb, "SessionType: %s\n", 550 (sess->sess_ops->SessionType) ? 551 "Discovery" : "Normal"); 552 rb += sysfs_emit_at(page, rb, "Session State: "); 553 switch (sess->session_state) { 554 case TARG_SESS_STATE_FREE: 555 rb += sysfs_emit_at(page, rb, "TARG_SESS_FREE\n"); 556 break; 557 case TARG_SESS_STATE_ACTIVE: 558 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_ACTIVE\n"); 559 break; 560 case TARG_SESS_STATE_LOGGED_IN: 561 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_LOGGED_IN\n"); 562 break; 563 case TARG_SESS_STATE_FAILED: 564 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_FAILED\n"); 565 break; 566 case TARG_SESS_STATE_IN_CONTINUE: 567 rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_IN_CONTINUE\n"); 568 break; 569 default: 570 rb += sysfs_emit_at(page, rb, "ERROR: Unknown Session" 571 " State!\n"); 572 break; 573 } 574 575 rb += sysfs_emit_at(page, rb, "---------------------[iSCSI Session" 576 " Values]-----------------------\n"); 577 rb += sysfs_emit_at(page, rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN" 578 " : MaxCmdSN : ITT : TTT\n"); 579 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn); 580 rb += sysfs_emit_at(page, rb, " 0x%08x 0x%08x 0x%08x 0x%08x" 581 " 0x%08x 0x%08x\n", 582 sess->cmdsn_window, 583 (max_cmd_sn - sess->exp_cmd_sn) + 1, 584 sess->exp_cmd_sn, max_cmd_sn, 585 sess->init_task_tag, sess->targ_xfer_tag); 586 rb += sysfs_emit_at(page, rb, "----------------------[iSCSI" 587 " Connections]-------------------------\n"); 588 589 spin_lock(&sess->conn_lock); 590 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { 591 rb += sysfs_emit_at(page, rb, "CID: %hu Connection" 592 " State: ", conn->cid); 593 switch (conn->conn_state) { 594 case TARG_CONN_STATE_FREE: 595 rb += sysfs_emit_at(page, rb, 596 "TARG_CONN_STATE_FREE\n"); 597 break; 598 case TARG_CONN_STATE_XPT_UP: 599 rb += sysfs_emit_at(page, rb, 600 "TARG_CONN_STATE_XPT_UP\n"); 601 break; 602 case TARG_CONN_STATE_IN_LOGIN: 603 rb += sysfs_emit_at(page, rb, 604 "TARG_CONN_STATE_IN_LOGIN\n"); 605 break; 606 case TARG_CONN_STATE_LOGGED_IN: 607 rb += sysfs_emit_at(page, rb, 608 "TARG_CONN_STATE_LOGGED_IN\n"); 609 break; 610 case TARG_CONN_STATE_IN_LOGOUT: 611 rb += sysfs_emit_at(page, rb, 612 "TARG_CONN_STATE_IN_LOGOUT\n"); 613 break; 614 case TARG_CONN_STATE_LOGOUT_REQUESTED: 615 rb += sysfs_emit_at(page, rb, 616 "TARG_CONN_STATE_LOGOUT_REQUESTED\n"); 617 break; 618 case TARG_CONN_STATE_CLEANUP_WAIT: 619 rb += sysfs_emit_at(page, rb, 620 "TARG_CONN_STATE_CLEANUP_WAIT\n"); 621 break; 622 default: 623 rb += sysfs_emit_at(page, rb, 624 "ERROR: Unknown Connection State!\n"); 625 break; 626 } 627 628 rb += sysfs_emit_at(page, rb, " Address %pISc %s", &conn->login_sockaddr, 629 (conn->network_transport == ISCSI_TCP) ? 630 "TCP" : "SCTP"); 631 rb += sysfs_emit_at(page, rb, " StatSN: 0x%08x\n", 632 conn->stat_sn); 633 } 634 spin_unlock(&sess->conn_lock); 635 } 636 spin_unlock_bh(&se_nacl->nacl_sess_lock); 637 638 return rb; 639 } 640 641 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item, 642 char *page) 643 { 644 return sysfs_emit(page, "%u\n", acl_to_nacl(item)->queue_depth); 645 } 646 647 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item, 648 const char *page, size_t count) 649 { 650 struct se_node_acl *se_nacl = acl_to_nacl(item); 651 struct se_portal_group *se_tpg = se_nacl->se_tpg; 652 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); 653 struct config_item *acl_ci, *tpg_ci, *wwn_ci; 654 u32 cmdsn_depth = 0; 655 int ret; 656 657 ret = kstrtou32(page, 0, &cmdsn_depth); 658 if (ret) 659 return ret; 660 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 661 pr_err("Passed cmdsn_depth: %u exceeds" 662 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth, 663 TA_DEFAULT_CMDSN_DEPTH_MAX); 664 return -EINVAL; 665 } 666 acl_ci = &se_nacl->acl_group.cg_item; 667 if (!acl_ci) { 668 pr_err("Unable to locatel acl_ci\n"); 669 return -EINVAL; 670 } 671 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item; 672 if (!tpg_ci) { 673 pr_err("Unable to locate tpg_ci\n"); 674 return -EINVAL; 675 } 676 wwn_ci = &tpg_ci->ci_group->cg_item; 677 if (!wwn_ci) { 678 pr_err("Unable to locate config_item wwn_ci\n"); 679 return -EINVAL; 680 } 681 682 if (iscsit_get_tpg(tpg) < 0) 683 return -EINVAL; 684 685 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth); 686 687 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for" 688 "InitiatorName: %s\n", config_item_name(wwn_ci), 689 config_item_name(tpg_ci), cmdsn_depth, 690 config_item_name(acl_ci)); 691 692 iscsit_put_tpg(tpg); 693 return (!ret) ? count : (ssize_t)ret; 694 } 695 696 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page) 697 { 698 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag); 699 } 700 701 static ssize_t lio_target_nacl_tag_store(struct config_item *item, 702 const char *page, size_t count) 703 { 704 struct se_node_acl *se_nacl = acl_to_nacl(item); 705 int ret; 706 707 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page); 708 709 if (ret < 0) 710 return ret; 711 return count; 712 } 713 714 CONFIGFS_ATTR_RO(lio_target_nacl_, info); 715 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth); 716 CONFIGFS_ATTR(lio_target_nacl_, tag); 717 718 static struct configfs_attribute *lio_target_initiator_attrs[] = { 719 &lio_target_nacl_attr_info, 720 &lio_target_nacl_attr_cmdsn_depth, 721 &lio_target_nacl_attr_tag, 722 NULL, 723 }; 724 725 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl, 726 const char *name) 727 { 728 struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl); 729 730 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, 731 "iscsi_sess_stats", &iscsi_stat_sess_cit); 732 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group, 733 &se_nacl->acl_fabric_stat_group); 734 return 0; 735 } 736 737 /* End items for lio_target_acl_cit */ 738 739 /* Start items for lio_target_tpg_attrib_cit */ 740 741 #define DEF_TPG_ATTRIB(name) \ 742 \ 743 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \ 744 char *page) \ 745 { \ 746 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 747 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 748 ssize_t rb; \ 749 \ 750 if (iscsit_get_tpg(tpg) < 0) \ 751 return -EINVAL; \ 752 \ 753 rb = sysfs_emit(page, "%u\n", tpg->tpg_attrib.name); \ 754 iscsit_put_tpg(tpg); \ 755 return rb; \ 756 } \ 757 \ 758 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\ 759 const char *page, size_t count) \ 760 { \ 761 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 762 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 763 u32 val; \ 764 int ret; \ 765 \ 766 if (iscsit_get_tpg(tpg) < 0) \ 767 return -EINVAL; \ 768 \ 769 ret = kstrtou32(page, 0, &val); \ 770 if (ret) \ 771 goto out; \ 772 ret = iscsit_ta_##name(tpg, val); \ 773 if (ret < 0) \ 774 goto out; \ 775 \ 776 iscsit_put_tpg(tpg); \ 777 return count; \ 778 out: \ 779 iscsit_put_tpg(tpg); \ 780 return ret; \ 781 } \ 782 CONFIGFS_ATTR(iscsi_tpg_attrib_, name) 783 784 DEF_TPG_ATTRIB(authentication); 785 DEF_TPG_ATTRIB(login_timeout); 786 DEF_TPG_ATTRIB(generate_node_acls); 787 DEF_TPG_ATTRIB(default_cmdsn_depth); 788 DEF_TPG_ATTRIB(cache_dynamic_acls); 789 DEF_TPG_ATTRIB(demo_mode_write_protect); 790 DEF_TPG_ATTRIB(prod_mode_write_protect); 791 DEF_TPG_ATTRIB(demo_mode_discovery); 792 DEF_TPG_ATTRIB(default_erl); 793 DEF_TPG_ATTRIB(t10_pi); 794 DEF_TPG_ATTRIB(fabric_prot_type); 795 DEF_TPG_ATTRIB(tpg_enabled_sendtargets); 796 DEF_TPG_ATTRIB(login_keys_workaround); 797 798 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { 799 &iscsi_tpg_attrib_attr_authentication, 800 &iscsi_tpg_attrib_attr_login_timeout, 801 &iscsi_tpg_attrib_attr_generate_node_acls, 802 &iscsi_tpg_attrib_attr_default_cmdsn_depth, 803 &iscsi_tpg_attrib_attr_cache_dynamic_acls, 804 &iscsi_tpg_attrib_attr_demo_mode_write_protect, 805 &iscsi_tpg_attrib_attr_prod_mode_write_protect, 806 &iscsi_tpg_attrib_attr_demo_mode_discovery, 807 &iscsi_tpg_attrib_attr_default_erl, 808 &iscsi_tpg_attrib_attr_t10_pi, 809 &iscsi_tpg_attrib_attr_fabric_prot_type, 810 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets, 811 &iscsi_tpg_attrib_attr_login_keys_workaround, 812 NULL, 813 }; 814 815 /* End items for lio_target_tpg_attrib_cit */ 816 817 /* Start items for lio_target_tpg_auth_cit */ 818 819 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \ 820 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \ 821 char *page) \ 822 { \ 823 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 824 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 825 \ 826 if (!capable(CAP_SYS_ADMIN)) \ 827 return -EPERM; \ 828 \ 829 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 830 } \ 831 \ 832 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\ 833 const char *page, size_t count) \ 834 { \ 835 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 836 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 837 \ 838 if (!capable(CAP_SYS_ADMIN)) \ 839 return -EPERM; \ 840 \ 841 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 842 if (!(strncmp("NULL", auth->name, 4))) \ 843 auth->naf_flags &= ~flags; \ 844 else \ 845 auth->naf_flags |= flags; \ 846 \ 847 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 848 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 849 auth->authenticate_target = 1; \ 850 else \ 851 auth->authenticate_target = 0; \ 852 \ 853 return count; \ 854 } 855 856 #define DEF_TPG_AUTH_STR(name, flags) \ 857 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \ 858 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \ 859 char *page) \ 860 { \ 861 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \ 862 } \ 863 \ 864 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \ 865 const char *page, size_t count) \ 866 { \ 867 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \ 868 } \ 869 \ 870 CONFIGFS_ATTR(iscsi_tpg_auth_, name); 871 872 873 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET); 874 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET); 875 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 876 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 877 878 #define __DEF_TPG_AUTH_INT(prefix, name) \ 879 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \ 880 char *page) \ 881 { \ 882 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 883 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 884 \ 885 if (!capable(CAP_SYS_ADMIN)) \ 886 return -EPERM; \ 887 \ 888 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 889 } 890 891 #define DEF_TPG_AUTH_INT(name) \ 892 __DEF_TPG_AUTH_INT(tpg_auth, name) \ 893 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \ 894 char *page) \ 895 { \ 896 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \ 897 } \ 898 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name); 899 900 DEF_TPG_AUTH_INT(authenticate_target); 901 902 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = { 903 &iscsi_tpg_auth_attr_userid, 904 &iscsi_tpg_auth_attr_password, 905 &iscsi_tpg_auth_attr_authenticate_target, 906 &iscsi_tpg_auth_attr_userid_mutual, 907 &iscsi_tpg_auth_attr_password_mutual, 908 NULL, 909 }; 910 911 /* End items for lio_target_tpg_auth_cit */ 912 913 /* Start items for lio_target_tpg_param_cit */ 914 915 #define DEF_TPG_PARAM(name) \ 916 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \ 917 char *page) \ 918 { \ 919 struct se_portal_group *se_tpg = param_to_tpg(item); \ 920 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 921 struct iscsi_param *param; \ 922 ssize_t rb; \ 923 \ 924 if (iscsit_get_tpg(tpg) < 0) \ 925 return -EINVAL; \ 926 \ 927 param = iscsi_find_param_from_key(__stringify(name), \ 928 tpg->param_list); \ 929 if (!param) { \ 930 iscsit_put_tpg(tpg); \ 931 return -EINVAL; \ 932 } \ 933 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \ 934 \ 935 iscsit_put_tpg(tpg); \ 936 return rb; \ 937 } \ 938 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \ 939 const char *page, size_t count) \ 940 { \ 941 struct se_portal_group *se_tpg = param_to_tpg(item); \ 942 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); \ 943 char *buf; \ 944 int ret, len; \ 945 \ 946 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \ 947 if (!buf) \ 948 return -ENOMEM; \ 949 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \ 950 if (isspace(buf[len-1])) \ 951 buf[len-1] = '\0'; /* Kill newline */ \ 952 \ 953 if (iscsit_get_tpg(tpg) < 0) { \ 954 kfree(buf); \ 955 return -EINVAL; \ 956 } \ 957 \ 958 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \ 959 if (ret < 0) \ 960 goto out; \ 961 \ 962 kfree(buf); \ 963 iscsit_put_tpg(tpg); \ 964 return count; \ 965 out: \ 966 kfree(buf); \ 967 iscsit_put_tpg(tpg); \ 968 return -EINVAL; \ 969 } \ 970 CONFIGFS_ATTR(iscsi_tpg_param_, name) 971 972 DEF_TPG_PARAM(AuthMethod); 973 DEF_TPG_PARAM(HeaderDigest); 974 DEF_TPG_PARAM(DataDigest); 975 DEF_TPG_PARAM(MaxConnections); 976 DEF_TPG_PARAM(TargetAlias); 977 DEF_TPG_PARAM(InitialR2T); 978 DEF_TPG_PARAM(ImmediateData); 979 DEF_TPG_PARAM(MaxRecvDataSegmentLength); 980 DEF_TPG_PARAM(MaxXmitDataSegmentLength); 981 DEF_TPG_PARAM(MaxBurstLength); 982 DEF_TPG_PARAM(FirstBurstLength); 983 DEF_TPG_PARAM(DefaultTime2Wait); 984 DEF_TPG_PARAM(DefaultTime2Retain); 985 DEF_TPG_PARAM(MaxOutstandingR2T); 986 DEF_TPG_PARAM(DataPDUInOrder); 987 DEF_TPG_PARAM(DataSequenceInOrder); 988 DEF_TPG_PARAM(ErrorRecoveryLevel); 989 DEF_TPG_PARAM(IFMarker); 990 DEF_TPG_PARAM(OFMarker); 991 DEF_TPG_PARAM(IFMarkInt); 992 DEF_TPG_PARAM(OFMarkInt); 993 994 static struct configfs_attribute *lio_target_tpg_param_attrs[] = { 995 &iscsi_tpg_param_attr_AuthMethod, 996 &iscsi_tpg_param_attr_HeaderDigest, 997 &iscsi_tpg_param_attr_DataDigest, 998 &iscsi_tpg_param_attr_MaxConnections, 999 &iscsi_tpg_param_attr_TargetAlias, 1000 &iscsi_tpg_param_attr_InitialR2T, 1001 &iscsi_tpg_param_attr_ImmediateData, 1002 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength, 1003 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength, 1004 &iscsi_tpg_param_attr_MaxBurstLength, 1005 &iscsi_tpg_param_attr_FirstBurstLength, 1006 &iscsi_tpg_param_attr_DefaultTime2Wait, 1007 &iscsi_tpg_param_attr_DefaultTime2Retain, 1008 &iscsi_tpg_param_attr_MaxOutstandingR2T, 1009 &iscsi_tpg_param_attr_DataPDUInOrder, 1010 &iscsi_tpg_param_attr_DataSequenceInOrder, 1011 &iscsi_tpg_param_attr_ErrorRecoveryLevel, 1012 &iscsi_tpg_param_attr_IFMarker, 1013 &iscsi_tpg_param_attr_OFMarker, 1014 &iscsi_tpg_param_attr_IFMarkInt, 1015 &iscsi_tpg_param_attr_OFMarkInt, 1016 NULL, 1017 }; 1018 1019 /* End items for lio_target_tpg_param_cit */ 1020 1021 /* Start items for lio_target_tpg_cit */ 1022 1023 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item, 1024 char *page) 1025 { 1026 return target_show_dynamic_sessions(to_tpg(item), page); 1027 } 1028 1029 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions); 1030 1031 static struct configfs_attribute *lio_target_tpg_attrs[] = { 1032 &lio_target_tpg_attr_dynamic_sessions, 1033 NULL, 1034 }; 1035 1036 /* End items for lio_target_tpg_cit */ 1037 1038 /* Start items for lio_target_tiqn_cit */ 1039 1040 static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn, 1041 const char *name) 1042 { 1043 struct iscsi_portal_group *tpg; 1044 struct iscsi_tiqn *tiqn; 1045 char *tpgt_str; 1046 int ret; 1047 u16 tpgt; 1048 1049 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1050 /* 1051 * Only tpgt_# directory groups can be created below 1052 * target/iscsi/iqn.superturodiskarry/ 1053 */ 1054 tpgt_str = strstr(name, "tpgt_"); 1055 if (!tpgt_str) { 1056 pr_err("Unable to locate \"tpgt_#\" directory" 1057 " group\n"); 1058 return NULL; 1059 } 1060 tpgt_str += 5; /* Skip ahead of "tpgt_" */ 1061 ret = kstrtou16(tpgt_str, 0, &tpgt); 1062 if (ret) 1063 return NULL; 1064 1065 tpg = iscsit_alloc_portal_group(tiqn, tpgt); 1066 if (!tpg) 1067 return NULL; 1068 1069 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI); 1070 if (ret < 0) 1071 goto free_out; 1072 1073 ret = iscsit_tpg_add_portal_group(tiqn, tpg); 1074 if (ret != 0) 1075 goto out; 1076 1077 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1078 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n", 1079 name); 1080 return &tpg->tpg_se_tpg; 1081 out: 1082 core_tpg_deregister(&tpg->tpg_se_tpg); 1083 free_out: 1084 kfree(tpg); 1085 return NULL; 1086 } 1087 1088 static int lio_target_tiqn_enabletpg(struct se_portal_group *se_tpg, 1089 bool enable) 1090 { 1091 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); 1092 int ret; 1093 1094 ret = iscsit_get_tpg(tpg); 1095 if (ret < 0) 1096 return -EINVAL; 1097 1098 if (enable) { 1099 ret = iscsit_tpg_enable_portal_group(tpg); 1100 if (ret < 0) 1101 goto out; 1102 } else { 1103 /* 1104 * iscsit_tpg_disable_portal_group() assumes force=1 1105 */ 1106 ret = iscsit_tpg_disable_portal_group(tpg, 1); 1107 if (ret < 0) 1108 goto out; 1109 } 1110 1111 iscsit_put_tpg(tpg); 1112 return 0; 1113 out: 1114 iscsit_put_tpg(tpg); 1115 return -EINVAL; 1116 } 1117 1118 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg) 1119 { 1120 struct iscsi_portal_group *tpg; 1121 struct iscsi_tiqn *tiqn; 1122 1123 tpg = to_iscsi_tpg(se_tpg); 1124 tiqn = tpg->tpg_tiqn; 1125 /* 1126 * iscsit_tpg_del_portal_group() assumes force=1 1127 */ 1128 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n"); 1129 iscsit_tpg_del_portal_group(tiqn, tpg, 1); 1130 } 1131 1132 /* End items for lio_target_tiqn_cit */ 1133 1134 /* Start LIO-Target TIQN struct contig_item lio_target_cit */ 1135 1136 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item, 1137 char *page) 1138 { 1139 return sysfs_emit(page, "Datera Inc. iSCSI Target %s\n", ISCSIT_VERSION); 1140 } 1141 1142 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version); 1143 1144 static ssize_t lio_target_wwn_cpus_allowed_list_show( 1145 struct config_item *item, char *page) 1146 { 1147 return sysfs_emit(page, "%*pbl\n", 1148 cpumask_pr_args(iscsit_global->allowed_cpumask)); 1149 } 1150 1151 static ssize_t lio_target_wwn_cpus_allowed_list_store( 1152 struct config_item *item, const char *page, size_t count) 1153 { 1154 int ret = -ENOMEM; 1155 char *orig; 1156 cpumask_var_t new_allowed_cpumask; 1157 1158 if (!zalloc_cpumask_var(&new_allowed_cpumask, GFP_KERNEL)) 1159 goto out; 1160 1161 orig = kstrdup(page, GFP_KERNEL); 1162 if (!orig) 1163 goto out_free_cpumask; 1164 1165 ret = cpulist_parse(orig, new_allowed_cpumask); 1166 if (!ret) 1167 cpumask_copy(iscsit_global->allowed_cpumask, 1168 new_allowed_cpumask); 1169 1170 kfree(orig); 1171 out_free_cpumask: 1172 free_cpumask_var(new_allowed_cpumask); 1173 out: 1174 return ret ? ret : count; 1175 } 1176 1177 CONFIGFS_ATTR(lio_target_wwn_, cpus_allowed_list); 1178 1179 static struct configfs_attribute *lio_target_wwn_attrs[] = { 1180 &lio_target_wwn_attr_lio_version, 1181 &lio_target_wwn_attr_cpus_allowed_list, 1182 NULL, 1183 }; 1184 1185 static struct se_wwn *lio_target_call_coreaddtiqn( 1186 struct target_fabric_configfs *tf, 1187 struct config_group *group, 1188 const char *name) 1189 { 1190 struct iscsi_tiqn *tiqn; 1191 1192 tiqn = iscsit_add_tiqn((unsigned char *)name); 1193 if (IS_ERR(tiqn)) 1194 return ERR_CAST(tiqn); 1195 1196 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1197 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:" 1198 " %s\n", name); 1199 return &tiqn->tiqn_wwn; 1200 } 1201 1202 static void lio_target_add_wwn_groups(struct se_wwn *wwn) 1203 { 1204 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1205 1206 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1207 "iscsi_instance", &iscsi_stat_instance_cit); 1208 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1209 &tiqn->tiqn_wwn.fabric_stat_group); 1210 1211 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1212 "iscsi_sess_err", &iscsi_stat_sess_err_cit); 1213 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1214 &tiqn->tiqn_wwn.fabric_stat_group); 1215 1216 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1217 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); 1218 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1219 &tiqn->tiqn_wwn.fabric_stat_group); 1220 1221 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1222 "iscsi_login_stats", &iscsi_stat_login_cit); 1223 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1224 &tiqn->tiqn_wwn.fabric_stat_group); 1225 1226 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1227 "iscsi_logout_stats", &iscsi_stat_logout_cit); 1228 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1229 &tiqn->tiqn_wwn.fabric_stat_group); 1230 } 1231 1232 static void lio_target_call_coredeltiqn( 1233 struct se_wwn *wwn) 1234 { 1235 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1236 1237 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n", 1238 tiqn->tiqn); 1239 iscsit_del_tiqn(tiqn); 1240 } 1241 1242 /* End LIO-Target TIQN struct contig_lio_target_cit */ 1243 1244 /* Start lio_target_discovery_auth_cit */ 1245 1246 #define DEF_DISC_AUTH_STR(name, flags) \ 1247 __DEF_NACL_AUTH_STR(disc, name, flags) \ 1248 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \ 1249 { \ 1250 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\ 1251 page); \ 1252 } \ 1253 static ssize_t iscsi_disc_##name##_store(struct config_item *item, \ 1254 const char *page, size_t count) \ 1255 { \ 1256 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \ 1257 page, count); \ 1258 \ 1259 } \ 1260 CONFIGFS_ATTR(iscsi_disc_, name) 1261 1262 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET); 1263 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET); 1264 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1265 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1266 1267 #define DEF_DISC_AUTH_INT(name) \ 1268 __DEF_NACL_AUTH_INT(disc, name) \ 1269 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \ 1270 { \ 1271 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \ 1272 page); \ 1273 } \ 1274 CONFIGFS_ATTR_RO(iscsi_disc_, name) 1275 1276 DEF_DISC_AUTH_INT(authenticate_target); 1277 1278 1279 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item, 1280 char *page) 1281 { 1282 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth; 1283 1284 return sysfs_emit(page, "%d\n", discovery_auth->enforce_discovery_auth); 1285 } 1286 1287 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item, 1288 const char *page, size_t count) 1289 { 1290 struct iscsi_param *param; 1291 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg; 1292 u32 op; 1293 int err; 1294 1295 err = kstrtou32(page, 0, &op); 1296 if (err) 1297 return -EINVAL; 1298 if ((op != 1) && (op != 0)) { 1299 pr_err("Illegal value for enforce_discovery_auth:" 1300 " %u\n", op); 1301 return -EINVAL; 1302 } 1303 1304 if (!discovery_tpg) { 1305 pr_err("iscsit_global->discovery_tpg is NULL\n"); 1306 return -EINVAL; 1307 } 1308 1309 param = iscsi_find_param_from_key(AUTHMETHOD, 1310 discovery_tpg->param_list); 1311 if (!param) 1312 return -EINVAL; 1313 1314 if (op) { 1315 /* 1316 * Reset the AuthMethod key to CHAP. 1317 */ 1318 if (iscsi_update_param_value(param, CHAP) < 0) 1319 return -EINVAL; 1320 1321 discovery_tpg->tpg_attrib.authentication = 1; 1322 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1; 1323 pr_debug("LIO-CORE[0] Successfully enabled" 1324 " authentication enforcement for iSCSI" 1325 " Discovery TPG\n"); 1326 } else { 1327 /* 1328 * Reset the AuthMethod key to CHAP,None 1329 */ 1330 if (iscsi_update_param_value(param, "CHAP,None") < 0) 1331 return -EINVAL; 1332 1333 discovery_tpg->tpg_attrib.authentication = 0; 1334 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0; 1335 pr_debug("LIO-CORE[0] Successfully disabled" 1336 " authentication enforcement for iSCSI" 1337 " Discovery TPG\n"); 1338 } 1339 1340 return count; 1341 } 1342 1343 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth); 1344 1345 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { 1346 &iscsi_disc_attr_userid, 1347 &iscsi_disc_attr_password, 1348 &iscsi_disc_attr_authenticate_target, 1349 &iscsi_disc_attr_userid_mutual, 1350 &iscsi_disc_attr_password_mutual, 1351 &iscsi_disc_attr_enforce_discovery_auth, 1352 NULL, 1353 }; 1354 1355 /* End lio_target_discovery_auth_cit */ 1356 1357 /* Start functions for target_core_fabric_ops */ 1358 1359 static int iscsi_get_cmd_state(struct se_cmd *se_cmd) 1360 { 1361 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1362 1363 return cmd->i_state; 1364 } 1365 1366 static u32 lio_sess_get_index(struct se_session *se_sess) 1367 { 1368 struct iscsit_session *sess = se_sess->fabric_sess_ptr; 1369 1370 return sess->session_index; 1371 } 1372 1373 static u32 lio_sess_get_initiator_sid( 1374 struct se_session *se_sess, 1375 unsigned char *buf, 1376 u32 size) 1377 { 1378 struct iscsit_session *sess = se_sess->fabric_sess_ptr; 1379 /* 1380 * iSCSI Initiator Session Identifier from RFC-3720. 1381 */ 1382 return snprintf(buf, size, "%6phN", sess->isid); 1383 } 1384 1385 static int lio_queue_data_in(struct se_cmd *se_cmd) 1386 { 1387 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1388 struct iscsit_conn *conn = cmd->conn; 1389 1390 cmd->i_state = ISTATE_SEND_DATAIN; 1391 return conn->conn_transport->iscsit_queue_data_in(conn, cmd); 1392 } 1393 1394 static int lio_write_pending(struct se_cmd *se_cmd) 1395 { 1396 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1397 struct iscsit_conn *conn = cmd->conn; 1398 1399 if (!cmd->immediate_data && !cmd->unsolicited_data) 1400 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false); 1401 1402 return 0; 1403 } 1404 1405 static int lio_queue_status(struct se_cmd *se_cmd) 1406 { 1407 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1408 struct iscsit_conn *conn = cmd->conn; 1409 1410 cmd->i_state = ISTATE_SEND_STATUS; 1411 1412 if (cmd->se_cmd.scsi_status || cmd->sense_reason) { 1413 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state); 1414 } 1415 return conn->conn_transport->iscsit_queue_status(conn, cmd); 1416 } 1417 1418 static void lio_queue_tm_rsp(struct se_cmd *se_cmd) 1419 { 1420 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1421 1422 cmd->i_state = ISTATE_SEND_TASKMGTRSP; 1423 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1424 } 1425 1426 static void lio_aborted_task(struct se_cmd *se_cmd) 1427 { 1428 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1429 1430 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd); 1431 } 1432 1433 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) 1434 { 1435 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn; 1436 } 1437 1438 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg) 1439 { 1440 return to_iscsi_tpg(se_tpg)->tpgt; 1441 } 1442 1443 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) 1444 { 1445 return to_iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth; 1446 } 1447 1448 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) 1449 { 1450 return to_iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls; 1451 } 1452 1453 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) 1454 { 1455 return to_iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls; 1456 } 1457 1458 static int lio_tpg_check_demo_mode_write_protect( 1459 struct se_portal_group *se_tpg) 1460 { 1461 return to_iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect; 1462 } 1463 1464 static int lio_tpg_check_prod_mode_write_protect( 1465 struct se_portal_group *se_tpg) 1466 { 1467 return to_iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect; 1468 } 1469 1470 static int lio_tpg_check_prot_fabric_only( 1471 struct se_portal_group *se_tpg) 1472 { 1473 /* 1474 * Only report fabric_prot_type if t10_pi has also been enabled 1475 * for incoming ib_isert sessions. 1476 */ 1477 if (!to_iscsi_tpg(se_tpg)->tpg_attrib.t10_pi) 1478 return 0; 1479 return to_iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type; 1480 } 1481 1482 /* 1483 * This function calls iscsit_inc_session_usage_count() on the 1484 * struct iscsit_session in question. 1485 */ 1486 static void lio_tpg_close_session(struct se_session *se_sess) 1487 { 1488 struct iscsit_session *sess = se_sess->fabric_sess_ptr; 1489 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg; 1490 1491 spin_lock_bh(&se_tpg->session_lock); 1492 spin_lock(&sess->conn_lock); 1493 if (atomic_read(&sess->session_fall_back_to_erl0) || 1494 atomic_read(&sess->session_logout) || 1495 atomic_read(&sess->session_close) || 1496 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) { 1497 spin_unlock(&sess->conn_lock); 1498 spin_unlock_bh(&se_tpg->session_lock); 1499 return; 1500 } 1501 iscsit_inc_session_usage_count(sess); 1502 atomic_set(&sess->session_reinstatement, 1); 1503 atomic_set(&sess->session_fall_back_to_erl0, 1); 1504 atomic_set(&sess->session_close, 1); 1505 spin_unlock(&sess->conn_lock); 1506 1507 iscsit_stop_time2retain_timer(sess); 1508 spin_unlock_bh(&se_tpg->session_lock); 1509 1510 iscsit_stop_session(sess, 1, 1); 1511 iscsit_dec_session_usage_count(sess); 1512 } 1513 1514 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg) 1515 { 1516 return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index; 1517 } 1518 1519 static void lio_set_default_node_attributes(struct se_node_acl *se_acl) 1520 { 1521 struct iscsi_node_acl *acl = to_iscsi_nacl(se_acl); 1522 struct se_portal_group *se_tpg = se_acl->se_tpg; 1523 struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg); 1524 1525 acl->node_attrib.nacl = acl; 1526 iscsit_set_default_node_attribues(acl, tpg); 1527 } 1528 1529 static int lio_check_stop_free(struct se_cmd *se_cmd) 1530 { 1531 return target_put_sess_cmd(se_cmd); 1532 } 1533 1534 static void lio_release_cmd(struct se_cmd *se_cmd) 1535 { 1536 struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd); 1537 1538 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); 1539 iscsit_release_cmd(cmd); 1540 } 1541 1542 const struct target_core_fabric_ops iscsi_ops = { 1543 .module = THIS_MODULE, 1544 .fabric_alias = "iscsi", 1545 .fabric_name = "iSCSI", 1546 .node_acl_size = sizeof(struct iscsi_node_acl), 1547 .tpg_get_wwn = lio_tpg_get_endpoint_wwn, 1548 .tpg_get_tag = lio_tpg_get_tag, 1549 .tpg_get_default_depth = lio_tpg_get_default_depth, 1550 .tpg_check_demo_mode = lio_tpg_check_demo_mode, 1551 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache, 1552 .tpg_check_demo_mode_write_protect = 1553 lio_tpg_check_demo_mode_write_protect, 1554 .tpg_check_prod_mode_write_protect = 1555 lio_tpg_check_prod_mode_write_protect, 1556 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only, 1557 .tpg_get_inst_index = lio_tpg_get_inst_index, 1558 .check_stop_free = lio_check_stop_free, 1559 .release_cmd = lio_release_cmd, 1560 .close_session = lio_tpg_close_session, 1561 .sess_get_index = lio_sess_get_index, 1562 .sess_get_initiator_sid = lio_sess_get_initiator_sid, 1563 .write_pending = lio_write_pending, 1564 .set_default_node_attributes = lio_set_default_node_attributes, 1565 .get_cmd_state = iscsi_get_cmd_state, 1566 .queue_data_in = lio_queue_data_in, 1567 .queue_status = lio_queue_status, 1568 .queue_tm_rsp = lio_queue_tm_rsp, 1569 .aborted_task = lio_aborted_task, 1570 .fabric_make_wwn = lio_target_call_coreaddtiqn, 1571 .fabric_drop_wwn = lio_target_call_coredeltiqn, 1572 .add_wwn_groups = lio_target_add_wwn_groups, 1573 .fabric_make_tpg = lio_target_tiqn_addtpg, 1574 .fabric_enable_tpg = lio_target_tiqn_enabletpg, 1575 .fabric_drop_tpg = lio_target_tiqn_deltpg, 1576 .fabric_make_np = lio_target_call_addnptotpg, 1577 .fabric_drop_np = lio_target_call_delnpfromtpg, 1578 .fabric_init_nodeacl = lio_target_init_nodeacl, 1579 1580 .tfc_discovery_attrs = lio_target_discovery_auth_attrs, 1581 .tfc_wwn_attrs = lio_target_wwn_attrs, 1582 .tfc_tpg_base_attrs = lio_target_tpg_attrs, 1583 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs, 1584 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs, 1585 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs, 1586 .tfc_tpg_np_base_attrs = lio_target_portal_attrs, 1587 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs, 1588 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs, 1589 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs, 1590 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs, 1591 1592 .write_pending_must_be_called = true, 1593 }; 1594