1 /******************************************************************************* 2 * This file contains the configfs implementation for iSCSI Target mode 3 * from the LIO-Target Project. 4 * 5 * (c) Copyright 2007-2013 Datera, Inc. 6 * 7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 ****************************************************************************/ 19 20 #include <linux/configfs.h> 21 #include <linux/ctype.h> 22 #include <linux/export.h> 23 #include <linux/inet.h> 24 #include <target/target_core_base.h> 25 #include <target/target_core_fabric.h> 26 #include <target/iscsi/iscsi_transport.h> 27 28 #include <target/iscsi/iscsi_target_core.h> 29 #include "iscsi_target_parameters.h" 30 #include "iscsi_target_device.h" 31 #include "iscsi_target_erl0.h" 32 #include "iscsi_target_nodeattrib.h" 33 #include "iscsi_target_tpg.h" 34 #include "iscsi_target_util.h" 35 #include "iscsi_target.h" 36 #include <target/iscsi/iscsi_target_stat.h> 37 38 39 /* Start items for lio_target_portal_cit */ 40 41 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item) 42 { 43 return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np); 44 } 45 46 static ssize_t lio_target_np_sctp_show(struct config_item *item, char *page) 47 { 48 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 49 struct iscsi_tpg_np *tpg_np_sctp; 50 ssize_t rb; 51 52 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP); 53 if (tpg_np_sctp) 54 rb = sprintf(page, "1\n"); 55 else 56 rb = sprintf(page, "0\n"); 57 58 return rb; 59 } 60 61 static ssize_t lio_target_np_sctp_store(struct config_item *item, 62 const char *page, size_t count) 63 { 64 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 65 struct iscsi_np *np; 66 struct iscsi_portal_group *tpg; 67 struct iscsi_tpg_np *tpg_np_sctp = NULL; 68 u32 op; 69 int ret; 70 71 ret = kstrtou32(page, 0, &op); 72 if (ret) 73 return ret; 74 if ((op != 1) && (op != 0)) { 75 pr_err("Illegal value for tpg_enable: %u\n", op); 76 return -EINVAL; 77 } 78 np = tpg_np->tpg_np; 79 if (!np) { 80 pr_err("Unable to locate struct iscsi_np from" 81 " struct iscsi_tpg_np\n"); 82 return -EINVAL; 83 } 84 85 tpg = tpg_np->tpg; 86 if (iscsit_get_tpg(tpg) < 0) 87 return -EINVAL; 88 89 if (op) { 90 /* 91 * Use existing np->np_sockaddr for SCTP network portal reference 92 */ 93 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr, 94 tpg_np, ISCSI_SCTP_TCP); 95 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp)) 96 goto out; 97 } else { 98 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP); 99 if (!tpg_np_sctp) 100 goto out; 101 102 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp); 103 if (ret < 0) 104 goto out; 105 } 106 107 iscsit_put_tpg(tpg); 108 return count; 109 out: 110 iscsit_put_tpg(tpg); 111 return -EINVAL; 112 } 113 114 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page) 115 { 116 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 117 struct iscsi_tpg_np *tpg_np_iser; 118 ssize_t rb; 119 120 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND); 121 if (tpg_np_iser) 122 rb = sprintf(page, "1\n"); 123 else 124 rb = sprintf(page, "0\n"); 125 126 return rb; 127 } 128 129 static ssize_t lio_target_np_iser_store(struct config_item *item, 130 const char *page, size_t count) 131 { 132 struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item); 133 struct iscsi_np *np; 134 struct iscsi_portal_group *tpg; 135 struct iscsi_tpg_np *tpg_np_iser = NULL; 136 char *endptr; 137 u32 op; 138 int rc = 0; 139 140 op = simple_strtoul(page, &endptr, 0); 141 if ((op != 1) && (op != 0)) { 142 pr_err("Illegal value for tpg_enable: %u\n", op); 143 return -EINVAL; 144 } 145 np = tpg_np->tpg_np; 146 if (!np) { 147 pr_err("Unable to locate struct iscsi_np from" 148 " struct iscsi_tpg_np\n"); 149 return -EINVAL; 150 } 151 152 tpg = tpg_np->tpg; 153 if (iscsit_get_tpg(tpg) < 0) 154 return -EINVAL; 155 156 if (op) { 157 rc = request_module("ib_isert"); 158 if (rc != 0) { 159 pr_warn("Unable to request_module for ib_isert\n"); 160 rc = 0; 161 } 162 163 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr, 164 tpg_np, ISCSI_INFINIBAND); 165 if (IS_ERR(tpg_np_iser)) { 166 rc = PTR_ERR(tpg_np_iser); 167 goto out; 168 } 169 } else { 170 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND); 171 if (tpg_np_iser) { 172 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser); 173 if (rc < 0) 174 goto out; 175 } 176 } 177 178 iscsit_put_tpg(tpg); 179 return count; 180 out: 181 iscsit_put_tpg(tpg); 182 return rc; 183 } 184 185 CONFIGFS_ATTR(lio_target_np_, sctp); 186 CONFIGFS_ATTR(lio_target_np_, iser); 187 188 static struct configfs_attribute *lio_target_portal_attrs[] = { 189 &lio_target_np_attr_sctp, 190 &lio_target_np_attr_iser, 191 NULL, 192 }; 193 194 /* Stop items for lio_target_portal_cit */ 195 196 /* Start items for lio_target_np_cit */ 197 198 #define MAX_PORTAL_LEN 256 199 200 static struct se_tpg_np *lio_target_call_addnptotpg( 201 struct se_portal_group *se_tpg, 202 struct config_group *group, 203 const char *name) 204 { 205 struct iscsi_portal_group *tpg; 206 struct iscsi_tpg_np *tpg_np; 207 char *str, *str2, *ip_str, *port_str; 208 struct sockaddr_storage sockaddr; 209 struct sockaddr_in *sock_in; 210 struct sockaddr_in6 *sock_in6; 211 unsigned long port; 212 int ret; 213 char buf[MAX_PORTAL_LEN + 1]; 214 215 if (strlen(name) > MAX_PORTAL_LEN) { 216 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n", 217 (int)strlen(name), MAX_PORTAL_LEN); 218 return ERR_PTR(-EOVERFLOW); 219 } 220 memset(buf, 0, MAX_PORTAL_LEN + 1); 221 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name); 222 223 memset(&sockaddr, 0, sizeof(struct sockaddr_storage)); 224 225 str = strstr(buf, "["); 226 if (str) { 227 const char *end; 228 229 str2 = strstr(str, "]"); 230 if (!str2) { 231 pr_err("Unable to locate trailing \"]\"" 232 " in IPv6 iSCSI network portal address\n"); 233 return ERR_PTR(-EINVAL); 234 } 235 str++; /* Skip over leading "[" */ 236 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */ 237 str2++; /* Skip over the \0 */ 238 port_str = strstr(str2, ":"); 239 if (!port_str) { 240 pr_err("Unable to locate \":port\"" 241 " in IPv6 iSCSI network portal address\n"); 242 return ERR_PTR(-EINVAL); 243 } 244 *port_str = '\0'; /* Terminate string for IP */ 245 port_str++; /* Skip over ":" */ 246 247 ret = kstrtoul(port_str, 0, &port); 248 if (ret < 0) { 249 pr_err("kstrtoul() failed for port_str: %d\n", ret); 250 return ERR_PTR(ret); 251 } 252 sock_in6 = (struct sockaddr_in6 *)&sockaddr; 253 sock_in6->sin6_family = AF_INET6; 254 sock_in6->sin6_port = htons((unsigned short)port); 255 ret = in6_pton(str, -1, 256 (void *)&sock_in6->sin6_addr.in6_u, -1, &end); 257 if (ret <= 0) { 258 pr_err("in6_pton returned: %d\n", ret); 259 return ERR_PTR(-EINVAL); 260 } 261 } else { 262 str = ip_str = &buf[0]; 263 port_str = strstr(ip_str, ":"); 264 if (!port_str) { 265 pr_err("Unable to locate \":port\"" 266 " in IPv4 iSCSI network portal address\n"); 267 return ERR_PTR(-EINVAL); 268 } 269 *port_str = '\0'; /* Terminate string for IP */ 270 port_str++; /* Skip over ":" */ 271 272 ret = kstrtoul(port_str, 0, &port); 273 if (ret < 0) { 274 pr_err("kstrtoul() failed for port_str: %d\n", ret); 275 return ERR_PTR(ret); 276 } 277 sock_in = (struct sockaddr_in *)&sockaddr; 278 sock_in->sin_family = AF_INET; 279 sock_in->sin_port = htons((unsigned short)port); 280 sock_in->sin_addr.s_addr = in_aton(ip_str); 281 } 282 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 283 ret = iscsit_get_tpg(tpg); 284 if (ret < 0) 285 return ERR_PTR(-EINVAL); 286 287 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu" 288 " PORTAL: %s\n", 289 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 290 tpg->tpgt, name); 291 /* 292 * Assume ISCSI_TCP by default. Other network portals for other 293 * iSCSI fabrics: 294 * 295 * Traditional iSCSI over SCTP (initial support) 296 * iSER/TCP (TODO, hardware available) 297 * iSER/SCTP (TODO, software emulation with osc-iwarp) 298 * iSER/IB (TODO, hardware available) 299 * 300 * can be enabled with attributes under 301 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/ 302 * 303 */ 304 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL, 305 ISCSI_TCP); 306 if (IS_ERR(tpg_np)) { 307 iscsit_put_tpg(tpg); 308 return ERR_CAST(tpg_np); 309 } 310 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n"); 311 312 iscsit_put_tpg(tpg); 313 return &tpg_np->se_tpg_np; 314 } 315 316 static void lio_target_call_delnpfromtpg( 317 struct se_tpg_np *se_tpg_np) 318 { 319 struct iscsi_portal_group *tpg; 320 struct iscsi_tpg_np *tpg_np; 321 struct se_portal_group *se_tpg; 322 int ret; 323 324 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np); 325 tpg = tpg_np->tpg; 326 ret = iscsit_get_tpg(tpg); 327 if (ret < 0) 328 return; 329 330 se_tpg = &tpg->tpg_se_tpg; 331 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu" 332 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 333 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr); 334 335 ret = iscsit_tpg_del_network_portal(tpg, tpg_np); 336 if (ret < 0) 337 goto out; 338 339 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n"); 340 out: 341 iscsit_put_tpg(tpg); 342 } 343 344 /* End items for lio_target_np_cit */ 345 346 /* Start items for lio_target_nacl_attrib_cit */ 347 348 #define ISCSI_NACL_ATTR(name) \ 349 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\ 350 char *page) \ 351 { \ 352 struct se_node_acl *se_nacl = attrib_to_nacl(item); \ 353 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ 354 se_node_acl); \ 355 \ 356 return sprintf(page, "%u\n", nacl->node_attrib.name); \ 357 } \ 358 \ 359 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\ 360 const char *page, size_t count) \ 361 { \ 362 struct se_node_acl *se_nacl = attrib_to_nacl(item); \ 363 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ 364 se_node_acl); \ 365 u32 val; \ 366 int ret; \ 367 \ 368 ret = kstrtou32(page, 0, &val); \ 369 if (ret) \ 370 return ret; \ 371 ret = iscsit_na_##name(nacl, val); \ 372 if (ret < 0) \ 373 return ret; \ 374 \ 375 return count; \ 376 } \ 377 \ 378 CONFIGFS_ATTR(iscsi_nacl_attrib_, name) 379 380 ISCSI_NACL_ATTR(dataout_timeout); 381 ISCSI_NACL_ATTR(dataout_timeout_retries); 382 ISCSI_NACL_ATTR(default_erl); 383 ISCSI_NACL_ATTR(nopin_timeout); 384 ISCSI_NACL_ATTR(nopin_response_timeout); 385 ISCSI_NACL_ATTR(random_datain_pdu_offsets); 386 ISCSI_NACL_ATTR(random_datain_seq_offsets); 387 ISCSI_NACL_ATTR(random_r2t_offsets); 388 389 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = { 390 &iscsi_nacl_attrib_attr_dataout_timeout, 391 &iscsi_nacl_attrib_attr_dataout_timeout_retries, 392 &iscsi_nacl_attrib_attr_default_erl, 393 &iscsi_nacl_attrib_attr_nopin_timeout, 394 &iscsi_nacl_attrib_attr_nopin_response_timeout, 395 &iscsi_nacl_attrib_attr_random_datain_pdu_offsets, 396 &iscsi_nacl_attrib_attr_random_datain_seq_offsets, 397 &iscsi_nacl_attrib_attr_random_r2t_offsets, 398 NULL, 399 }; 400 401 /* End items for lio_target_nacl_attrib_cit */ 402 403 /* Start items for lio_target_nacl_auth_cit */ 404 405 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \ 406 static ssize_t __iscsi_##prefix##_##name##_show( \ 407 struct iscsi_node_acl *nacl, \ 408 char *page) \ 409 { \ 410 struct iscsi_node_auth *auth = &nacl->node_auth; \ 411 \ 412 if (!capable(CAP_SYS_ADMIN)) \ 413 return -EPERM; \ 414 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 415 } \ 416 \ 417 static ssize_t __iscsi_##prefix##_##name##_store( \ 418 struct iscsi_node_acl *nacl, \ 419 const char *page, \ 420 size_t count) \ 421 { \ 422 struct iscsi_node_auth *auth = &nacl->node_auth; \ 423 \ 424 if (!capable(CAP_SYS_ADMIN)) \ 425 return -EPERM; \ 426 if (count >= sizeof(auth->name)) \ 427 return -EINVAL; \ 428 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 429 if (!strncmp("NULL", auth->name, 4)) \ 430 auth->naf_flags &= ~flags; \ 431 else \ 432 auth->naf_flags |= flags; \ 433 \ 434 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 435 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 436 auth->authenticate_target = 1; \ 437 else \ 438 auth->authenticate_target = 0; \ 439 \ 440 return count; \ 441 } 442 443 #define DEF_NACL_AUTH_STR(name, flags) \ 444 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \ 445 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \ 446 char *page) \ 447 { \ 448 struct se_node_acl *nacl = auth_to_nacl(item); \ 449 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \ 450 struct iscsi_node_acl, se_node_acl), page); \ 451 } \ 452 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \ 453 const char *page, size_t count) \ 454 { \ 455 struct se_node_acl *nacl = auth_to_nacl(item); \ 456 return __iscsi_nacl_auth_##name##_store(container_of(nacl, \ 457 struct iscsi_node_acl, se_node_acl), page, count); \ 458 } \ 459 \ 460 CONFIGFS_ATTR(iscsi_nacl_auth_, name) 461 462 /* 463 * One-way authentication userid 464 */ 465 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET); 466 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET); 467 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 468 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 469 470 #define __DEF_NACL_AUTH_INT(prefix, name) \ 471 static ssize_t __iscsi_##prefix##_##name##_show( \ 472 struct iscsi_node_acl *nacl, \ 473 char *page) \ 474 { \ 475 struct iscsi_node_auth *auth = &nacl->node_auth; \ 476 \ 477 if (!capable(CAP_SYS_ADMIN)) \ 478 return -EPERM; \ 479 \ 480 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 481 } 482 483 #define DEF_NACL_AUTH_INT(name) \ 484 __DEF_NACL_AUTH_INT(nacl_auth, name) \ 485 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \ 486 char *page) \ 487 { \ 488 struct se_node_acl *nacl = auth_to_nacl(item); \ 489 return __iscsi_nacl_auth_##name##_show(container_of(nacl, \ 490 struct iscsi_node_acl, se_node_acl), page); \ 491 } \ 492 \ 493 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name) 494 495 DEF_NACL_AUTH_INT(authenticate_target); 496 497 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = { 498 &iscsi_nacl_auth_attr_userid, 499 &iscsi_nacl_auth_attr_password, 500 &iscsi_nacl_auth_attr_authenticate_target, 501 &iscsi_nacl_auth_attr_userid_mutual, 502 &iscsi_nacl_auth_attr_password_mutual, 503 NULL, 504 }; 505 506 /* End items for lio_target_nacl_auth_cit */ 507 508 /* Start items for lio_target_nacl_param_cit */ 509 510 #define ISCSI_NACL_PARAM(name) \ 511 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \ 512 char *page) \ 513 { \ 514 struct se_node_acl *se_nacl = param_to_nacl(item); \ 515 struct iscsi_session *sess; \ 516 struct se_session *se_sess; \ 517 ssize_t rb; \ 518 \ 519 spin_lock_bh(&se_nacl->nacl_sess_lock); \ 520 se_sess = se_nacl->nacl_sess; \ 521 if (!se_sess) { \ 522 rb = snprintf(page, PAGE_SIZE, \ 523 "No Active iSCSI Session\n"); \ 524 } else { \ 525 sess = se_sess->fabric_sess_ptr; \ 526 rb = snprintf(page, PAGE_SIZE, "%u\n", \ 527 (u32)sess->sess_ops->name); \ 528 } \ 529 spin_unlock_bh(&se_nacl->nacl_sess_lock); \ 530 \ 531 return rb; \ 532 } \ 533 \ 534 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name) 535 536 ISCSI_NACL_PARAM(MaxConnections); 537 ISCSI_NACL_PARAM(InitialR2T); 538 ISCSI_NACL_PARAM(ImmediateData); 539 ISCSI_NACL_PARAM(MaxBurstLength); 540 ISCSI_NACL_PARAM(FirstBurstLength); 541 ISCSI_NACL_PARAM(DefaultTime2Wait); 542 ISCSI_NACL_PARAM(DefaultTime2Retain); 543 ISCSI_NACL_PARAM(MaxOutstandingR2T); 544 ISCSI_NACL_PARAM(DataPDUInOrder); 545 ISCSI_NACL_PARAM(DataSequenceInOrder); 546 ISCSI_NACL_PARAM(ErrorRecoveryLevel); 547 548 static struct configfs_attribute *lio_target_nacl_param_attrs[] = { 549 &iscsi_nacl_param_attr_MaxConnections, 550 &iscsi_nacl_param_attr_InitialR2T, 551 &iscsi_nacl_param_attr_ImmediateData, 552 &iscsi_nacl_param_attr_MaxBurstLength, 553 &iscsi_nacl_param_attr_FirstBurstLength, 554 &iscsi_nacl_param_attr_DefaultTime2Wait, 555 &iscsi_nacl_param_attr_DefaultTime2Retain, 556 &iscsi_nacl_param_attr_MaxOutstandingR2T, 557 &iscsi_nacl_param_attr_DataPDUInOrder, 558 &iscsi_nacl_param_attr_DataSequenceInOrder, 559 &iscsi_nacl_param_attr_ErrorRecoveryLevel, 560 NULL, 561 }; 562 563 /* End items for lio_target_nacl_param_cit */ 564 565 /* Start items for lio_target_acl_cit */ 566 567 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page) 568 { 569 struct se_node_acl *se_nacl = acl_to_nacl(item); 570 struct iscsi_session *sess; 571 struct iscsi_conn *conn; 572 struct se_session *se_sess; 573 ssize_t rb = 0; 574 u32 max_cmd_sn; 575 576 spin_lock_bh(&se_nacl->nacl_sess_lock); 577 se_sess = se_nacl->nacl_sess; 578 if (!se_sess) { 579 rb += sprintf(page+rb, "No active iSCSI Session for Initiator" 580 " Endpoint: %s\n", se_nacl->initiatorname); 581 } else { 582 sess = se_sess->fabric_sess_ptr; 583 584 rb += sprintf(page+rb, "InitiatorName: %s\n", 585 sess->sess_ops->InitiatorName); 586 rb += sprintf(page+rb, "InitiatorAlias: %s\n", 587 sess->sess_ops->InitiatorAlias); 588 589 rb += sprintf(page+rb, 590 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ", 591 sess->sid, sess->isid, sess->tsih); 592 rb += sprintf(page+rb, "SessionType: %s\n", 593 (sess->sess_ops->SessionType) ? 594 "Discovery" : "Normal"); 595 rb += sprintf(page+rb, "Session State: "); 596 switch (sess->session_state) { 597 case TARG_SESS_STATE_FREE: 598 rb += sprintf(page+rb, "TARG_SESS_FREE\n"); 599 break; 600 case TARG_SESS_STATE_ACTIVE: 601 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n"); 602 break; 603 case TARG_SESS_STATE_LOGGED_IN: 604 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n"); 605 break; 606 case TARG_SESS_STATE_FAILED: 607 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n"); 608 break; 609 case TARG_SESS_STATE_IN_CONTINUE: 610 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n"); 611 break; 612 default: 613 rb += sprintf(page+rb, "ERROR: Unknown Session" 614 " State!\n"); 615 break; 616 } 617 618 rb += sprintf(page+rb, "---------------------[iSCSI Session" 619 " Values]-----------------------\n"); 620 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN" 621 " : MaxCmdSN : ITT : TTT\n"); 622 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn); 623 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x" 624 " 0x%08x 0x%08x\n", 625 sess->cmdsn_window, 626 (max_cmd_sn - sess->exp_cmd_sn) + 1, 627 sess->exp_cmd_sn, max_cmd_sn, 628 sess->init_task_tag, sess->targ_xfer_tag); 629 rb += sprintf(page+rb, "----------------------[iSCSI" 630 " Connections]-------------------------\n"); 631 632 spin_lock(&sess->conn_lock); 633 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { 634 rb += sprintf(page+rb, "CID: %hu Connection" 635 " State: ", conn->cid); 636 switch (conn->conn_state) { 637 case TARG_CONN_STATE_FREE: 638 rb += sprintf(page+rb, 639 "TARG_CONN_STATE_FREE\n"); 640 break; 641 case TARG_CONN_STATE_XPT_UP: 642 rb += sprintf(page+rb, 643 "TARG_CONN_STATE_XPT_UP\n"); 644 break; 645 case TARG_CONN_STATE_IN_LOGIN: 646 rb += sprintf(page+rb, 647 "TARG_CONN_STATE_IN_LOGIN\n"); 648 break; 649 case TARG_CONN_STATE_LOGGED_IN: 650 rb += sprintf(page+rb, 651 "TARG_CONN_STATE_LOGGED_IN\n"); 652 break; 653 case TARG_CONN_STATE_IN_LOGOUT: 654 rb += sprintf(page+rb, 655 "TARG_CONN_STATE_IN_LOGOUT\n"); 656 break; 657 case TARG_CONN_STATE_LOGOUT_REQUESTED: 658 rb += sprintf(page+rb, 659 "TARG_CONN_STATE_LOGOUT_REQUESTED\n"); 660 break; 661 case TARG_CONN_STATE_CLEANUP_WAIT: 662 rb += sprintf(page+rb, 663 "TARG_CONN_STATE_CLEANUP_WAIT\n"); 664 break; 665 default: 666 rb += sprintf(page+rb, 667 "ERROR: Unknown Connection State!\n"); 668 break; 669 } 670 671 rb += sprintf(page+rb, " Address %pISc %s", &conn->login_sockaddr, 672 (conn->network_transport == ISCSI_TCP) ? 673 "TCP" : "SCTP"); 674 rb += sprintf(page+rb, " StatSN: 0x%08x\n", 675 conn->stat_sn); 676 } 677 spin_unlock(&sess->conn_lock); 678 } 679 spin_unlock_bh(&se_nacl->nacl_sess_lock); 680 681 return rb; 682 } 683 684 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item, 685 char *page) 686 { 687 return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth); 688 } 689 690 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item, 691 const char *page, size_t count) 692 { 693 struct se_node_acl *se_nacl = acl_to_nacl(item); 694 struct se_portal_group *se_tpg = se_nacl->se_tpg; 695 struct iscsi_portal_group *tpg = container_of(se_tpg, 696 struct iscsi_portal_group, tpg_se_tpg); 697 struct config_item *acl_ci, *tpg_ci, *wwn_ci; 698 u32 cmdsn_depth = 0; 699 int ret; 700 701 ret = kstrtou32(page, 0, &cmdsn_depth); 702 if (ret) 703 return ret; 704 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 705 pr_err("Passed cmdsn_depth: %u exceeds" 706 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth, 707 TA_DEFAULT_CMDSN_DEPTH_MAX); 708 return -EINVAL; 709 } 710 acl_ci = &se_nacl->acl_group.cg_item; 711 if (!acl_ci) { 712 pr_err("Unable to locatel acl_ci\n"); 713 return -EINVAL; 714 } 715 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item; 716 if (!tpg_ci) { 717 pr_err("Unable to locate tpg_ci\n"); 718 return -EINVAL; 719 } 720 wwn_ci = &tpg_ci->ci_group->cg_item; 721 if (!wwn_ci) { 722 pr_err("Unable to locate config_item wwn_ci\n"); 723 return -EINVAL; 724 } 725 726 if (iscsit_get_tpg(tpg) < 0) 727 return -EINVAL; 728 729 ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth); 730 731 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for" 732 "InitiatorName: %s\n", config_item_name(wwn_ci), 733 config_item_name(tpg_ci), cmdsn_depth, 734 config_item_name(acl_ci)); 735 736 iscsit_put_tpg(tpg); 737 return (!ret) ? count : (ssize_t)ret; 738 } 739 740 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page) 741 { 742 return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag); 743 } 744 745 static ssize_t lio_target_nacl_tag_store(struct config_item *item, 746 const char *page, size_t count) 747 { 748 struct se_node_acl *se_nacl = acl_to_nacl(item); 749 int ret; 750 751 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page); 752 753 if (ret < 0) 754 return ret; 755 return count; 756 } 757 758 CONFIGFS_ATTR_RO(lio_target_nacl_, info); 759 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth); 760 CONFIGFS_ATTR(lio_target_nacl_, tag); 761 762 static struct configfs_attribute *lio_target_initiator_attrs[] = { 763 &lio_target_nacl_attr_info, 764 &lio_target_nacl_attr_cmdsn_depth, 765 &lio_target_nacl_attr_tag, 766 NULL, 767 }; 768 769 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl, 770 const char *name) 771 { 772 struct iscsi_node_acl *acl = 773 container_of(se_nacl, struct iscsi_node_acl, se_node_acl); 774 775 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, 776 "iscsi_sess_stats", &iscsi_stat_sess_cit); 777 configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group, 778 &se_nacl->acl_fabric_stat_group); 779 return 0; 780 } 781 782 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl) 783 { 784 struct iscsi_node_acl *acl = container_of(se_nacl, 785 struct iscsi_node_acl, se_node_acl); 786 787 configfs_remove_default_groups(&acl->se_node_acl.acl_fabric_stat_group); 788 } 789 790 /* End items for lio_target_acl_cit */ 791 792 /* Start items for lio_target_tpg_attrib_cit */ 793 794 #define DEF_TPG_ATTRIB(name) \ 795 \ 796 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \ 797 char *page) \ 798 { \ 799 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 800 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 801 struct iscsi_portal_group, tpg_se_tpg); \ 802 ssize_t rb; \ 803 \ 804 if (iscsit_get_tpg(tpg) < 0) \ 805 return -EINVAL; \ 806 \ 807 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 808 iscsit_put_tpg(tpg); \ 809 return rb; \ 810 } \ 811 \ 812 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\ 813 const char *page, size_t count) \ 814 { \ 815 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 816 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 817 struct iscsi_portal_group, tpg_se_tpg); \ 818 u32 val; \ 819 int ret; \ 820 \ 821 if (iscsit_get_tpg(tpg) < 0) \ 822 return -EINVAL; \ 823 \ 824 ret = kstrtou32(page, 0, &val); \ 825 if (ret) \ 826 goto out; \ 827 ret = iscsit_ta_##name(tpg, val); \ 828 if (ret < 0) \ 829 goto out; \ 830 \ 831 iscsit_put_tpg(tpg); \ 832 return count; \ 833 out: \ 834 iscsit_put_tpg(tpg); \ 835 return ret; \ 836 } \ 837 CONFIGFS_ATTR(iscsi_tpg_attrib_, name) 838 839 DEF_TPG_ATTRIB(authentication); 840 DEF_TPG_ATTRIB(login_timeout); 841 DEF_TPG_ATTRIB(netif_timeout); 842 DEF_TPG_ATTRIB(generate_node_acls); 843 DEF_TPG_ATTRIB(default_cmdsn_depth); 844 DEF_TPG_ATTRIB(cache_dynamic_acls); 845 DEF_TPG_ATTRIB(demo_mode_write_protect); 846 DEF_TPG_ATTRIB(prod_mode_write_protect); 847 DEF_TPG_ATTRIB(demo_mode_discovery); 848 DEF_TPG_ATTRIB(default_erl); 849 DEF_TPG_ATTRIB(t10_pi); 850 DEF_TPG_ATTRIB(fabric_prot_type); 851 DEF_TPG_ATTRIB(tpg_enabled_sendtargets); 852 853 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { 854 &iscsi_tpg_attrib_attr_authentication, 855 &iscsi_tpg_attrib_attr_login_timeout, 856 &iscsi_tpg_attrib_attr_netif_timeout, 857 &iscsi_tpg_attrib_attr_generate_node_acls, 858 &iscsi_tpg_attrib_attr_default_cmdsn_depth, 859 &iscsi_tpg_attrib_attr_cache_dynamic_acls, 860 &iscsi_tpg_attrib_attr_demo_mode_write_protect, 861 &iscsi_tpg_attrib_attr_prod_mode_write_protect, 862 &iscsi_tpg_attrib_attr_demo_mode_discovery, 863 &iscsi_tpg_attrib_attr_default_erl, 864 &iscsi_tpg_attrib_attr_t10_pi, 865 &iscsi_tpg_attrib_attr_fabric_prot_type, 866 &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets, 867 NULL, 868 }; 869 870 /* End items for lio_target_tpg_attrib_cit */ 871 872 /* Start items for lio_target_tpg_auth_cit */ 873 874 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \ 875 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \ 876 char *page) \ 877 { \ 878 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 879 struct iscsi_portal_group, tpg_se_tpg); \ 880 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 881 \ 882 if (!capable(CAP_SYS_ADMIN)) \ 883 return -EPERM; \ 884 \ 885 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 886 } \ 887 \ 888 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\ 889 const char *page, size_t count) \ 890 { \ 891 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 892 struct iscsi_portal_group, tpg_se_tpg); \ 893 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 894 \ 895 if (!capable(CAP_SYS_ADMIN)) \ 896 return -EPERM; \ 897 \ 898 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 899 if (!(strncmp("NULL", auth->name, 4))) \ 900 auth->naf_flags &= ~flags; \ 901 else \ 902 auth->naf_flags |= flags; \ 903 \ 904 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 905 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 906 auth->authenticate_target = 1; \ 907 else \ 908 auth->authenticate_target = 0; \ 909 \ 910 return count; \ 911 } 912 913 #define DEF_TPG_AUTH_STR(name, flags) \ 914 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \ 915 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \ 916 char *page) \ 917 { \ 918 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \ 919 } \ 920 \ 921 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \ 922 const char *page, size_t count) \ 923 { \ 924 return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \ 925 } \ 926 \ 927 CONFIGFS_ATTR(iscsi_tpg_auth_, name); 928 929 930 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET); 931 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET); 932 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 933 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 934 935 #define __DEF_TPG_AUTH_INT(prefix, name) \ 936 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \ 937 char *page) \ 938 { \ 939 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 940 struct iscsi_portal_group, tpg_se_tpg); \ 941 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 942 \ 943 if (!capable(CAP_SYS_ADMIN)) \ 944 return -EPERM; \ 945 \ 946 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 947 } 948 949 #define DEF_TPG_AUTH_INT(name) \ 950 __DEF_TPG_AUTH_INT(tpg_auth, name) \ 951 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \ 952 char *page) \ 953 { \ 954 return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \ 955 } \ 956 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name); 957 958 DEF_TPG_AUTH_INT(authenticate_target); 959 960 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = { 961 &iscsi_tpg_auth_attr_userid, 962 &iscsi_tpg_auth_attr_password, 963 &iscsi_tpg_auth_attr_authenticate_target, 964 &iscsi_tpg_auth_attr_userid_mutual, 965 &iscsi_tpg_auth_attr_password_mutual, 966 NULL, 967 }; 968 969 /* End items for lio_target_tpg_auth_cit */ 970 971 /* Start items for lio_target_tpg_param_cit */ 972 973 #define DEF_TPG_PARAM(name) \ 974 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \ 975 char *page) \ 976 { \ 977 struct se_portal_group *se_tpg = param_to_tpg(item); \ 978 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 979 struct iscsi_portal_group, tpg_se_tpg); \ 980 struct iscsi_param *param; \ 981 ssize_t rb; \ 982 \ 983 if (iscsit_get_tpg(tpg) < 0) \ 984 return -EINVAL; \ 985 \ 986 param = iscsi_find_param_from_key(__stringify(name), \ 987 tpg->param_list); \ 988 if (!param) { \ 989 iscsit_put_tpg(tpg); \ 990 return -EINVAL; \ 991 } \ 992 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \ 993 \ 994 iscsit_put_tpg(tpg); \ 995 return rb; \ 996 } \ 997 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \ 998 const char *page, size_t count) \ 999 { \ 1000 struct se_portal_group *se_tpg = param_to_tpg(item); \ 1001 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1002 struct iscsi_portal_group, tpg_se_tpg); \ 1003 char *buf; \ 1004 int ret, len; \ 1005 \ 1006 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \ 1007 if (!buf) \ 1008 return -ENOMEM; \ 1009 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \ 1010 if (isspace(buf[len-1])) \ 1011 buf[len-1] = '\0'; /* Kill newline */ \ 1012 \ 1013 if (iscsit_get_tpg(tpg) < 0) { \ 1014 kfree(buf); \ 1015 return -EINVAL; \ 1016 } \ 1017 \ 1018 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \ 1019 if (ret < 0) \ 1020 goto out; \ 1021 \ 1022 kfree(buf); \ 1023 iscsit_put_tpg(tpg); \ 1024 return count; \ 1025 out: \ 1026 kfree(buf); \ 1027 iscsit_put_tpg(tpg); \ 1028 return -EINVAL; \ 1029 } \ 1030 CONFIGFS_ATTR(iscsi_tpg_param_, name) 1031 1032 DEF_TPG_PARAM(AuthMethod); 1033 DEF_TPG_PARAM(HeaderDigest); 1034 DEF_TPG_PARAM(DataDigest); 1035 DEF_TPG_PARAM(MaxConnections); 1036 DEF_TPG_PARAM(TargetAlias); 1037 DEF_TPG_PARAM(InitialR2T); 1038 DEF_TPG_PARAM(ImmediateData); 1039 DEF_TPG_PARAM(MaxRecvDataSegmentLength); 1040 DEF_TPG_PARAM(MaxXmitDataSegmentLength); 1041 DEF_TPG_PARAM(MaxBurstLength); 1042 DEF_TPG_PARAM(FirstBurstLength); 1043 DEF_TPG_PARAM(DefaultTime2Wait); 1044 DEF_TPG_PARAM(DefaultTime2Retain); 1045 DEF_TPG_PARAM(MaxOutstandingR2T); 1046 DEF_TPG_PARAM(DataPDUInOrder); 1047 DEF_TPG_PARAM(DataSequenceInOrder); 1048 DEF_TPG_PARAM(ErrorRecoveryLevel); 1049 DEF_TPG_PARAM(IFMarker); 1050 DEF_TPG_PARAM(OFMarker); 1051 DEF_TPG_PARAM(IFMarkInt); 1052 DEF_TPG_PARAM(OFMarkInt); 1053 1054 static struct configfs_attribute *lio_target_tpg_param_attrs[] = { 1055 &iscsi_tpg_param_attr_AuthMethod, 1056 &iscsi_tpg_param_attr_HeaderDigest, 1057 &iscsi_tpg_param_attr_DataDigest, 1058 &iscsi_tpg_param_attr_MaxConnections, 1059 &iscsi_tpg_param_attr_TargetAlias, 1060 &iscsi_tpg_param_attr_InitialR2T, 1061 &iscsi_tpg_param_attr_ImmediateData, 1062 &iscsi_tpg_param_attr_MaxRecvDataSegmentLength, 1063 &iscsi_tpg_param_attr_MaxXmitDataSegmentLength, 1064 &iscsi_tpg_param_attr_MaxBurstLength, 1065 &iscsi_tpg_param_attr_FirstBurstLength, 1066 &iscsi_tpg_param_attr_DefaultTime2Wait, 1067 &iscsi_tpg_param_attr_DefaultTime2Retain, 1068 &iscsi_tpg_param_attr_MaxOutstandingR2T, 1069 &iscsi_tpg_param_attr_DataPDUInOrder, 1070 &iscsi_tpg_param_attr_DataSequenceInOrder, 1071 &iscsi_tpg_param_attr_ErrorRecoveryLevel, 1072 &iscsi_tpg_param_attr_IFMarker, 1073 &iscsi_tpg_param_attr_OFMarker, 1074 &iscsi_tpg_param_attr_IFMarkInt, 1075 &iscsi_tpg_param_attr_OFMarkInt, 1076 NULL, 1077 }; 1078 1079 /* End items for lio_target_tpg_param_cit */ 1080 1081 /* Start items for lio_target_tpg_cit */ 1082 1083 static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page) 1084 { 1085 struct se_portal_group *se_tpg = to_tpg(item); 1086 struct iscsi_portal_group *tpg = container_of(se_tpg, 1087 struct iscsi_portal_group, tpg_se_tpg); 1088 ssize_t len; 1089 1090 spin_lock(&tpg->tpg_state_lock); 1091 len = sprintf(page, "%d\n", 1092 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0); 1093 spin_unlock(&tpg->tpg_state_lock); 1094 1095 return len; 1096 } 1097 1098 static ssize_t lio_target_tpg_enable_store(struct config_item *item, 1099 const char *page, size_t count) 1100 { 1101 struct se_portal_group *se_tpg = to_tpg(item); 1102 struct iscsi_portal_group *tpg = container_of(se_tpg, 1103 struct iscsi_portal_group, tpg_se_tpg); 1104 u32 op; 1105 int ret; 1106 1107 ret = kstrtou32(page, 0, &op); 1108 if (ret) 1109 return ret; 1110 if ((op != 1) && (op != 0)) { 1111 pr_err("Illegal value for tpg_enable: %u\n", op); 1112 return -EINVAL; 1113 } 1114 1115 ret = iscsit_get_tpg(tpg); 1116 if (ret < 0) 1117 return -EINVAL; 1118 1119 if (op) { 1120 ret = iscsit_tpg_enable_portal_group(tpg); 1121 if (ret < 0) 1122 goto out; 1123 } else { 1124 /* 1125 * iscsit_tpg_disable_portal_group() assumes force=1 1126 */ 1127 ret = iscsit_tpg_disable_portal_group(tpg, 1); 1128 if (ret < 0) 1129 goto out; 1130 } 1131 1132 iscsit_put_tpg(tpg); 1133 return count; 1134 out: 1135 iscsit_put_tpg(tpg); 1136 return -EINVAL; 1137 } 1138 1139 1140 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item, 1141 char *page) 1142 { 1143 return target_show_dynamic_sessions(to_tpg(item), page); 1144 } 1145 1146 CONFIGFS_ATTR(lio_target_tpg_, enable); 1147 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions); 1148 1149 static struct configfs_attribute *lio_target_tpg_attrs[] = { 1150 &lio_target_tpg_attr_enable, 1151 &lio_target_tpg_attr_dynamic_sessions, 1152 NULL, 1153 }; 1154 1155 /* End items for lio_target_tpg_cit */ 1156 1157 /* Start items for lio_target_tiqn_cit */ 1158 1159 static struct se_portal_group *lio_target_tiqn_addtpg( 1160 struct se_wwn *wwn, 1161 struct config_group *group, 1162 const char *name) 1163 { 1164 struct iscsi_portal_group *tpg; 1165 struct iscsi_tiqn *tiqn; 1166 char *tpgt_str; 1167 int ret; 1168 u16 tpgt; 1169 1170 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1171 /* 1172 * Only tpgt_# directory groups can be created below 1173 * target/iscsi/iqn.superturodiskarry/ 1174 */ 1175 tpgt_str = strstr(name, "tpgt_"); 1176 if (!tpgt_str) { 1177 pr_err("Unable to locate \"tpgt_#\" directory" 1178 " group\n"); 1179 return NULL; 1180 } 1181 tpgt_str += 5; /* Skip ahead of "tpgt_" */ 1182 ret = kstrtou16(tpgt_str, 0, &tpgt); 1183 if (ret) 1184 return NULL; 1185 1186 tpg = iscsit_alloc_portal_group(tiqn, tpgt); 1187 if (!tpg) 1188 return NULL; 1189 1190 ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI); 1191 if (ret < 0) 1192 return NULL; 1193 1194 ret = iscsit_tpg_add_portal_group(tiqn, tpg); 1195 if (ret != 0) 1196 goto out; 1197 1198 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1199 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n", 1200 name); 1201 return &tpg->tpg_se_tpg; 1202 out: 1203 core_tpg_deregister(&tpg->tpg_se_tpg); 1204 kfree(tpg); 1205 return NULL; 1206 } 1207 1208 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg) 1209 { 1210 struct iscsi_portal_group *tpg; 1211 struct iscsi_tiqn *tiqn; 1212 1213 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1214 tiqn = tpg->tpg_tiqn; 1215 /* 1216 * iscsit_tpg_del_portal_group() assumes force=1 1217 */ 1218 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n"); 1219 iscsit_tpg_del_portal_group(tiqn, tpg, 1); 1220 } 1221 1222 /* End items for lio_target_tiqn_cit */ 1223 1224 /* Start LIO-Target TIQN struct contig_item lio_target_cit */ 1225 1226 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item, 1227 char *page) 1228 { 1229 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n"); 1230 } 1231 1232 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version); 1233 1234 static struct configfs_attribute *lio_target_wwn_attrs[] = { 1235 &lio_target_wwn_attr_lio_version, 1236 NULL, 1237 }; 1238 1239 static struct se_wwn *lio_target_call_coreaddtiqn( 1240 struct target_fabric_configfs *tf, 1241 struct config_group *group, 1242 const char *name) 1243 { 1244 struct iscsi_tiqn *tiqn; 1245 1246 tiqn = iscsit_add_tiqn((unsigned char *)name); 1247 if (IS_ERR(tiqn)) 1248 return ERR_CAST(tiqn); 1249 1250 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1251 "iscsi_instance", &iscsi_stat_instance_cit); 1252 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1253 &tiqn->tiqn_wwn.fabric_stat_group); 1254 1255 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1256 "iscsi_sess_err", &iscsi_stat_sess_err_cit); 1257 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1258 &tiqn->tiqn_wwn.fabric_stat_group); 1259 1260 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1261 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); 1262 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1263 &tiqn->tiqn_wwn.fabric_stat_group); 1264 1265 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1266 "iscsi_login_stats", &iscsi_stat_login_cit); 1267 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1268 &tiqn->tiqn_wwn.fabric_stat_group); 1269 1270 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1271 "iscsi_logout_stats", &iscsi_stat_logout_cit); 1272 configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1273 &tiqn->tiqn_wwn.fabric_stat_group); 1274 1275 1276 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1277 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:" 1278 " %s\n", name); 1279 return &tiqn->tiqn_wwn; 1280 } 1281 1282 static void lio_target_call_coredeltiqn( 1283 struct se_wwn *wwn) 1284 { 1285 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1286 1287 configfs_remove_default_groups(&tiqn->tiqn_wwn.fabric_stat_group); 1288 1289 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n", 1290 tiqn->tiqn); 1291 iscsit_del_tiqn(tiqn); 1292 } 1293 1294 /* End LIO-Target TIQN struct contig_lio_target_cit */ 1295 1296 /* Start lio_target_discovery_auth_cit */ 1297 1298 #define DEF_DISC_AUTH_STR(name, flags) \ 1299 __DEF_NACL_AUTH_STR(disc, name, flags) \ 1300 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \ 1301 { \ 1302 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\ 1303 page); \ 1304 } \ 1305 static ssize_t iscsi_disc_##name##_store(struct config_item *item, \ 1306 const char *page, size_t count) \ 1307 { \ 1308 return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \ 1309 page, count); \ 1310 \ 1311 } \ 1312 CONFIGFS_ATTR(iscsi_disc_, name) 1313 1314 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET); 1315 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET); 1316 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1317 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1318 1319 #define DEF_DISC_AUTH_INT(name) \ 1320 __DEF_NACL_AUTH_INT(disc, name) \ 1321 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \ 1322 { \ 1323 return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \ 1324 page); \ 1325 } \ 1326 CONFIGFS_ATTR_RO(iscsi_disc_, name) 1327 1328 DEF_DISC_AUTH_INT(authenticate_target); 1329 1330 1331 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item, 1332 char *page) 1333 { 1334 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth; 1335 1336 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth); 1337 } 1338 1339 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item, 1340 const char *page, size_t count) 1341 { 1342 struct iscsi_param *param; 1343 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg; 1344 u32 op; 1345 int err; 1346 1347 err = kstrtou32(page, 0, &op); 1348 if (err) 1349 return -EINVAL; 1350 if ((op != 1) && (op != 0)) { 1351 pr_err("Illegal value for enforce_discovery_auth:" 1352 " %u\n", op); 1353 return -EINVAL; 1354 } 1355 1356 if (!discovery_tpg) { 1357 pr_err("iscsit_global->discovery_tpg is NULL\n"); 1358 return -EINVAL; 1359 } 1360 1361 param = iscsi_find_param_from_key(AUTHMETHOD, 1362 discovery_tpg->param_list); 1363 if (!param) 1364 return -EINVAL; 1365 1366 if (op) { 1367 /* 1368 * Reset the AuthMethod key to CHAP. 1369 */ 1370 if (iscsi_update_param_value(param, CHAP) < 0) 1371 return -EINVAL; 1372 1373 discovery_tpg->tpg_attrib.authentication = 1; 1374 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1; 1375 pr_debug("LIO-CORE[0] Successfully enabled" 1376 " authentication enforcement for iSCSI" 1377 " Discovery TPG\n"); 1378 } else { 1379 /* 1380 * Reset the AuthMethod key to CHAP,None 1381 */ 1382 if (iscsi_update_param_value(param, "CHAP,None") < 0) 1383 return -EINVAL; 1384 1385 discovery_tpg->tpg_attrib.authentication = 0; 1386 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0; 1387 pr_debug("LIO-CORE[0] Successfully disabled" 1388 " authentication enforcement for iSCSI" 1389 " Discovery TPG\n"); 1390 } 1391 1392 return count; 1393 } 1394 1395 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth); 1396 1397 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { 1398 &iscsi_disc_attr_userid, 1399 &iscsi_disc_attr_password, 1400 &iscsi_disc_attr_authenticate_target, 1401 &iscsi_disc_attr_userid_mutual, 1402 &iscsi_disc_attr_password_mutual, 1403 &iscsi_disc_attr_enforce_discovery_auth, 1404 NULL, 1405 }; 1406 1407 /* End lio_target_discovery_auth_cit */ 1408 1409 /* Start functions for target_core_fabric_ops */ 1410 1411 static char *iscsi_get_fabric_name(void) 1412 { 1413 return "iSCSI"; 1414 } 1415 1416 static int iscsi_get_cmd_state(struct se_cmd *se_cmd) 1417 { 1418 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1419 1420 return cmd->i_state; 1421 } 1422 1423 static u32 lio_sess_get_index(struct se_session *se_sess) 1424 { 1425 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1426 1427 return sess->session_index; 1428 } 1429 1430 static u32 lio_sess_get_initiator_sid( 1431 struct se_session *se_sess, 1432 unsigned char *buf, 1433 u32 size) 1434 { 1435 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1436 /* 1437 * iSCSI Initiator Session Identifier from RFC-3720. 1438 */ 1439 return snprintf(buf, size, "%6phN", sess->isid); 1440 } 1441 1442 static int lio_queue_data_in(struct se_cmd *se_cmd) 1443 { 1444 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1445 1446 cmd->i_state = ISTATE_SEND_DATAIN; 1447 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd); 1448 1449 return 0; 1450 } 1451 1452 static int lio_write_pending(struct se_cmd *se_cmd) 1453 { 1454 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1455 struct iscsi_conn *conn = cmd->conn; 1456 1457 if (!cmd->immediate_data && !cmd->unsolicited_data) 1458 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false); 1459 1460 return 0; 1461 } 1462 1463 static int lio_write_pending_status(struct se_cmd *se_cmd) 1464 { 1465 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1466 int ret; 1467 1468 spin_lock_bh(&cmd->istate_lock); 1469 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT); 1470 spin_unlock_bh(&cmd->istate_lock); 1471 1472 return ret; 1473 } 1474 1475 static int lio_queue_status(struct se_cmd *se_cmd) 1476 { 1477 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1478 1479 cmd->i_state = ISTATE_SEND_STATUS; 1480 1481 if (cmd->se_cmd.scsi_status || cmd->sense_reason) { 1482 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1483 return 0; 1484 } 1485 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd); 1486 1487 return 0; 1488 } 1489 1490 static void lio_queue_tm_rsp(struct se_cmd *se_cmd) 1491 { 1492 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1493 1494 cmd->i_state = ISTATE_SEND_TASKMGTRSP; 1495 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1496 } 1497 1498 static void lio_aborted_task(struct se_cmd *se_cmd) 1499 { 1500 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1501 1502 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd); 1503 } 1504 1505 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg) 1506 { 1507 return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1508 } 1509 1510 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) 1511 { 1512 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn; 1513 } 1514 1515 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg) 1516 { 1517 return iscsi_tpg(se_tpg)->tpgt; 1518 } 1519 1520 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) 1521 { 1522 return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth; 1523 } 1524 1525 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) 1526 { 1527 return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls; 1528 } 1529 1530 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) 1531 { 1532 return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls; 1533 } 1534 1535 static int lio_tpg_check_demo_mode_write_protect( 1536 struct se_portal_group *se_tpg) 1537 { 1538 return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect; 1539 } 1540 1541 static int lio_tpg_check_prod_mode_write_protect( 1542 struct se_portal_group *se_tpg) 1543 { 1544 return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect; 1545 } 1546 1547 static int lio_tpg_check_prot_fabric_only( 1548 struct se_portal_group *se_tpg) 1549 { 1550 /* 1551 * Only report fabric_prot_type if t10_pi has also been enabled 1552 * for incoming ib_isert sessions. 1553 */ 1554 if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi) 1555 return 0; 1556 return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type; 1557 } 1558 1559 /* 1560 * This function calls iscsit_inc_session_usage_count() on the 1561 * struct iscsi_session in question. 1562 */ 1563 static int lio_tpg_shutdown_session(struct se_session *se_sess) 1564 { 1565 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1566 struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg; 1567 1568 spin_lock_bh(&se_tpg->session_lock); 1569 spin_lock(&sess->conn_lock); 1570 if (atomic_read(&sess->session_fall_back_to_erl0) || 1571 atomic_read(&sess->session_logout) || 1572 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) { 1573 spin_unlock(&sess->conn_lock); 1574 spin_unlock_bh(&se_tpg->session_lock); 1575 return 0; 1576 } 1577 atomic_set(&sess->session_reinstatement, 1); 1578 spin_unlock(&sess->conn_lock); 1579 1580 iscsit_stop_time2retain_timer(sess); 1581 spin_unlock_bh(&se_tpg->session_lock); 1582 1583 iscsit_stop_session(sess, 1, 1); 1584 return 1; 1585 } 1586 1587 /* 1588 * Calls iscsit_dec_session_usage_count() as inverse of 1589 * lio_tpg_shutdown_session() 1590 */ 1591 static void lio_tpg_close_session(struct se_session *se_sess) 1592 { 1593 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1594 /* 1595 * If the iSCSI Session for the iSCSI Initiator Node exists, 1596 * forcefully shutdown the iSCSI NEXUS. 1597 */ 1598 iscsit_close_session(sess); 1599 } 1600 1601 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg) 1602 { 1603 return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index; 1604 } 1605 1606 static void lio_set_default_node_attributes(struct se_node_acl *se_acl) 1607 { 1608 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl, 1609 se_node_acl); 1610 struct se_portal_group *se_tpg = se_acl->se_tpg; 1611 struct iscsi_portal_group *tpg = container_of(se_tpg, 1612 struct iscsi_portal_group, tpg_se_tpg); 1613 1614 acl->node_attrib.nacl = acl; 1615 iscsit_set_default_node_attribues(acl, tpg); 1616 } 1617 1618 static int lio_check_stop_free(struct se_cmd *se_cmd) 1619 { 1620 return target_put_sess_cmd(se_cmd); 1621 } 1622 1623 static void lio_release_cmd(struct se_cmd *se_cmd) 1624 { 1625 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1626 1627 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); 1628 iscsit_release_cmd(cmd); 1629 } 1630 1631 const struct target_core_fabric_ops iscsi_ops = { 1632 .module = THIS_MODULE, 1633 .name = "iscsi", 1634 .node_acl_size = sizeof(struct iscsi_node_acl), 1635 .get_fabric_name = iscsi_get_fabric_name, 1636 .tpg_get_wwn = lio_tpg_get_endpoint_wwn, 1637 .tpg_get_tag = lio_tpg_get_tag, 1638 .tpg_get_default_depth = lio_tpg_get_default_depth, 1639 .tpg_check_demo_mode = lio_tpg_check_demo_mode, 1640 .tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache, 1641 .tpg_check_demo_mode_write_protect = 1642 lio_tpg_check_demo_mode_write_protect, 1643 .tpg_check_prod_mode_write_protect = 1644 lio_tpg_check_prod_mode_write_protect, 1645 .tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only, 1646 .tpg_get_inst_index = lio_tpg_get_inst_index, 1647 .check_stop_free = lio_check_stop_free, 1648 .release_cmd = lio_release_cmd, 1649 .shutdown_session = lio_tpg_shutdown_session, 1650 .close_session = lio_tpg_close_session, 1651 .sess_get_index = lio_sess_get_index, 1652 .sess_get_initiator_sid = lio_sess_get_initiator_sid, 1653 .write_pending = lio_write_pending, 1654 .write_pending_status = lio_write_pending_status, 1655 .set_default_node_attributes = lio_set_default_node_attributes, 1656 .get_cmd_state = iscsi_get_cmd_state, 1657 .queue_data_in = lio_queue_data_in, 1658 .queue_status = lio_queue_status, 1659 .queue_tm_rsp = lio_queue_tm_rsp, 1660 .aborted_task = lio_aborted_task, 1661 .fabric_make_wwn = lio_target_call_coreaddtiqn, 1662 .fabric_drop_wwn = lio_target_call_coredeltiqn, 1663 .fabric_make_tpg = lio_target_tiqn_addtpg, 1664 .fabric_drop_tpg = lio_target_tiqn_deltpg, 1665 .fabric_make_np = lio_target_call_addnptotpg, 1666 .fabric_drop_np = lio_target_call_delnpfromtpg, 1667 .fabric_init_nodeacl = lio_target_init_nodeacl, 1668 .fabric_cleanup_nodeacl = lio_target_cleanup_nodeacl, 1669 1670 .tfc_discovery_attrs = lio_target_discovery_auth_attrs, 1671 .tfc_wwn_attrs = lio_target_wwn_attrs, 1672 .tfc_tpg_base_attrs = lio_target_tpg_attrs, 1673 .tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs, 1674 .tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs, 1675 .tfc_tpg_param_attrs = lio_target_tpg_param_attrs, 1676 .tfc_tpg_np_base_attrs = lio_target_portal_attrs, 1677 .tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs, 1678 .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs, 1679 .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs, 1680 .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs, 1681 }; 1682