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/target_core_fabric_configfs.h> 27 #include <target/target_core_configfs.h> 28 #include <target/configfs_macros.h> 29 #include <target/iscsi/iscsi_transport.h> 30 31 #include <target/iscsi/iscsi_target_core.h> 32 #include "iscsi_target_parameters.h" 33 #include "iscsi_target_device.h" 34 #include "iscsi_target_erl0.h" 35 #include "iscsi_target_nodeattrib.h" 36 #include "iscsi_target_tpg.h" 37 #include "iscsi_target_util.h" 38 #include "iscsi_target.h" 39 #include <target/iscsi/iscsi_target_stat.h> 40 #include "iscsi_target_configfs.h" 41 42 struct target_fabric_configfs *lio_target_fabric_configfs; 43 44 struct lio_target_configfs_attribute { 45 struct configfs_attribute attr; 46 ssize_t (*show)(void *, char *); 47 ssize_t (*store)(void *, const char *, size_t); 48 }; 49 50 /* Start items for lio_target_portal_cit */ 51 52 static ssize_t lio_target_np_show_sctp( 53 struct se_tpg_np *se_tpg_np, 54 char *page) 55 { 56 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np, 57 struct iscsi_tpg_np, se_tpg_np); 58 struct iscsi_tpg_np *tpg_np_sctp; 59 ssize_t rb; 60 61 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP); 62 if (tpg_np_sctp) 63 rb = sprintf(page, "1\n"); 64 else 65 rb = sprintf(page, "0\n"); 66 67 return rb; 68 } 69 70 static ssize_t lio_target_np_store_sctp( 71 struct se_tpg_np *se_tpg_np, 72 const char *page, 73 size_t count) 74 { 75 struct iscsi_np *np; 76 struct iscsi_portal_group *tpg; 77 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np, 78 struct iscsi_tpg_np, se_tpg_np); 79 struct iscsi_tpg_np *tpg_np_sctp = NULL; 80 u32 op; 81 int ret; 82 83 ret = kstrtou32(page, 0, &op); 84 if (ret) 85 return ret; 86 if ((op != 1) && (op != 0)) { 87 pr_err("Illegal value for tpg_enable: %u\n", op); 88 return -EINVAL; 89 } 90 np = tpg_np->tpg_np; 91 if (!np) { 92 pr_err("Unable to locate struct iscsi_np from" 93 " struct iscsi_tpg_np\n"); 94 return -EINVAL; 95 } 96 97 tpg = tpg_np->tpg; 98 if (iscsit_get_tpg(tpg) < 0) 99 return -EINVAL; 100 101 if (op) { 102 /* 103 * Use existing np->np_sockaddr for SCTP network portal reference 104 */ 105 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr, 106 np->np_ip, tpg_np, ISCSI_SCTP_TCP); 107 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp)) 108 goto out; 109 } else { 110 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP); 111 if (!tpg_np_sctp) 112 goto out; 113 114 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp); 115 if (ret < 0) 116 goto out; 117 } 118 119 iscsit_put_tpg(tpg); 120 return count; 121 out: 122 iscsit_put_tpg(tpg); 123 return -EINVAL; 124 } 125 126 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR); 127 128 static ssize_t lio_target_np_show_iser( 129 struct se_tpg_np *se_tpg_np, 130 char *page) 131 { 132 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np, 133 struct iscsi_tpg_np, se_tpg_np); 134 struct iscsi_tpg_np *tpg_np_iser; 135 ssize_t rb; 136 137 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND); 138 if (tpg_np_iser) 139 rb = sprintf(page, "1\n"); 140 else 141 rb = sprintf(page, "0\n"); 142 143 return rb; 144 } 145 146 static ssize_t lio_target_np_store_iser( 147 struct se_tpg_np *se_tpg_np, 148 const char *page, 149 size_t count) 150 { 151 struct iscsi_np *np; 152 struct iscsi_portal_group *tpg; 153 struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np, 154 struct iscsi_tpg_np, se_tpg_np); 155 struct iscsi_tpg_np *tpg_np_iser = NULL; 156 char *endptr; 157 u32 op; 158 int rc = 0; 159 160 op = simple_strtoul(page, &endptr, 0); 161 if ((op != 1) && (op != 0)) { 162 pr_err("Illegal value for tpg_enable: %u\n", op); 163 return -EINVAL; 164 } 165 np = tpg_np->tpg_np; 166 if (!np) { 167 pr_err("Unable to locate struct iscsi_np from" 168 " struct iscsi_tpg_np\n"); 169 return -EINVAL; 170 } 171 172 tpg = tpg_np->tpg; 173 if (iscsit_get_tpg(tpg) < 0) 174 return -EINVAL; 175 176 if (op) { 177 rc = request_module("ib_isert"); 178 if (rc != 0) { 179 pr_warn("Unable to request_module for ib_isert\n"); 180 rc = 0; 181 } 182 183 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr, 184 np->np_ip, tpg_np, ISCSI_INFINIBAND); 185 if (IS_ERR(tpg_np_iser)) { 186 rc = PTR_ERR(tpg_np_iser); 187 goto out; 188 } 189 } else { 190 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND); 191 if (tpg_np_iser) { 192 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser); 193 if (rc < 0) 194 goto out; 195 } 196 } 197 198 iscsit_put_tpg(tpg); 199 return count; 200 out: 201 iscsit_put_tpg(tpg); 202 return rc; 203 } 204 205 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR); 206 207 static struct configfs_attribute *lio_target_portal_attrs[] = { 208 &lio_target_np_sctp.attr, 209 &lio_target_np_iser.attr, 210 NULL, 211 }; 212 213 /* Stop items for lio_target_portal_cit */ 214 215 /* Start items for lio_target_np_cit */ 216 217 #define MAX_PORTAL_LEN 256 218 219 static struct se_tpg_np *lio_target_call_addnptotpg( 220 struct se_portal_group *se_tpg, 221 struct config_group *group, 222 const char *name) 223 { 224 struct iscsi_portal_group *tpg; 225 struct iscsi_tpg_np *tpg_np; 226 char *str, *str2, *ip_str, *port_str; 227 struct __kernel_sockaddr_storage sockaddr; 228 struct sockaddr_in *sock_in; 229 struct sockaddr_in6 *sock_in6; 230 unsigned long port; 231 int ret; 232 char buf[MAX_PORTAL_LEN + 1]; 233 234 if (strlen(name) > MAX_PORTAL_LEN) { 235 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n", 236 (int)strlen(name), MAX_PORTAL_LEN); 237 return ERR_PTR(-EOVERFLOW); 238 } 239 memset(buf, 0, MAX_PORTAL_LEN + 1); 240 snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name); 241 242 memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage)); 243 244 str = strstr(buf, "["); 245 if (str) { 246 const char *end; 247 248 str2 = strstr(str, "]"); 249 if (!str2) { 250 pr_err("Unable to locate trailing \"]\"" 251 " in IPv6 iSCSI network portal address\n"); 252 return ERR_PTR(-EINVAL); 253 } 254 str++; /* Skip over leading "[" */ 255 *str2 = '\0'; /* Terminate the IPv6 address */ 256 str2++; /* Skip over the "]" */ 257 port_str = strstr(str2, ":"); 258 if (!port_str) { 259 pr_err("Unable to locate \":port\"" 260 " in IPv6 iSCSI network portal address\n"); 261 return ERR_PTR(-EINVAL); 262 } 263 *port_str = '\0'; /* Terminate string for IP */ 264 port_str++; /* Skip over ":" */ 265 266 ret = kstrtoul(port_str, 0, &port); 267 if (ret < 0) { 268 pr_err("kstrtoul() failed for port_str: %d\n", ret); 269 return ERR_PTR(ret); 270 } 271 sock_in6 = (struct sockaddr_in6 *)&sockaddr; 272 sock_in6->sin6_family = AF_INET6; 273 sock_in6->sin6_port = htons((unsigned short)port); 274 ret = in6_pton(str, IPV6_ADDRESS_SPACE, 275 (void *)&sock_in6->sin6_addr.in6_u, -1, &end); 276 if (ret <= 0) { 277 pr_err("in6_pton returned: %d\n", ret); 278 return ERR_PTR(-EINVAL); 279 } 280 } else { 281 str = ip_str = &buf[0]; 282 port_str = strstr(ip_str, ":"); 283 if (!port_str) { 284 pr_err("Unable to locate \":port\"" 285 " in IPv4 iSCSI network portal address\n"); 286 return ERR_PTR(-EINVAL); 287 } 288 *port_str = '\0'; /* Terminate string for IP */ 289 port_str++; /* Skip over ":" */ 290 291 ret = kstrtoul(port_str, 0, &port); 292 if (ret < 0) { 293 pr_err("kstrtoul() failed for port_str: %d\n", ret); 294 return ERR_PTR(ret); 295 } 296 sock_in = (struct sockaddr_in *)&sockaddr; 297 sock_in->sin_family = AF_INET; 298 sock_in->sin_port = htons((unsigned short)port); 299 sock_in->sin_addr.s_addr = in_aton(ip_str); 300 } 301 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 302 ret = iscsit_get_tpg(tpg); 303 if (ret < 0) 304 return ERR_PTR(-EINVAL); 305 306 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu" 307 " PORTAL: %s\n", 308 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 309 tpg->tpgt, name); 310 /* 311 * Assume ISCSI_TCP by default. Other network portals for other 312 * iSCSI fabrics: 313 * 314 * Traditional iSCSI over SCTP (initial support) 315 * iSER/TCP (TODO, hardware available) 316 * iSER/SCTP (TODO, software emulation with osc-iwarp) 317 * iSER/IB (TODO, hardware available) 318 * 319 * can be enabled with attributes under 320 * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/ 321 * 322 */ 323 tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL, 324 ISCSI_TCP); 325 if (IS_ERR(tpg_np)) { 326 iscsit_put_tpg(tpg); 327 return ERR_CAST(tpg_np); 328 } 329 pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n"); 330 331 iscsit_put_tpg(tpg); 332 return &tpg_np->se_tpg_np; 333 } 334 335 static void lio_target_call_delnpfromtpg( 336 struct se_tpg_np *se_tpg_np) 337 { 338 struct iscsi_portal_group *tpg; 339 struct iscsi_tpg_np *tpg_np; 340 struct se_portal_group *se_tpg; 341 int ret; 342 343 tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np); 344 tpg = tpg_np->tpg; 345 ret = iscsit_get_tpg(tpg); 346 if (ret < 0) 347 return; 348 349 se_tpg = &tpg->tpg_se_tpg; 350 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu" 351 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item), 352 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port); 353 354 ret = iscsit_tpg_del_network_portal(tpg, tpg_np); 355 if (ret < 0) 356 goto out; 357 358 pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n"); 359 out: 360 iscsit_put_tpg(tpg); 361 } 362 363 /* End items for lio_target_np_cit */ 364 365 /* Start items for lio_target_nacl_attrib_cit */ 366 367 #define DEF_NACL_ATTRIB(name) \ 368 static ssize_t iscsi_nacl_attrib_show_##name( \ 369 struct se_node_acl *se_nacl, \ 370 char *page) \ 371 { \ 372 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ 373 se_node_acl); \ 374 \ 375 return sprintf(page, "%u\n", nacl->node_attrib.name); \ 376 } \ 377 \ 378 static ssize_t iscsi_nacl_attrib_store_##name( \ 379 struct se_node_acl *se_nacl, \ 380 const char *page, \ 381 size_t count) \ 382 { \ 383 struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \ 384 se_node_acl); \ 385 u32 val; \ 386 int ret; \ 387 \ 388 ret = kstrtou32(page, 0, &val); \ 389 if (ret) \ 390 return ret; \ 391 ret = iscsit_na_##name(nacl, val); \ 392 if (ret < 0) \ 393 return ret; \ 394 \ 395 return count; \ 396 } 397 398 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode); 399 /* 400 * Define iscsi_node_attrib_s_dataout_timeout 401 */ 402 DEF_NACL_ATTRIB(dataout_timeout); 403 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR); 404 /* 405 * Define iscsi_node_attrib_s_dataout_timeout_retries 406 */ 407 DEF_NACL_ATTRIB(dataout_timeout_retries); 408 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR); 409 /* 410 * Define iscsi_node_attrib_s_default_erl 411 */ 412 DEF_NACL_ATTRIB(default_erl); 413 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR); 414 /* 415 * Define iscsi_node_attrib_s_nopin_timeout 416 */ 417 DEF_NACL_ATTRIB(nopin_timeout); 418 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR); 419 /* 420 * Define iscsi_node_attrib_s_nopin_response_timeout 421 */ 422 DEF_NACL_ATTRIB(nopin_response_timeout); 423 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR); 424 /* 425 * Define iscsi_node_attrib_s_random_datain_pdu_offsets 426 */ 427 DEF_NACL_ATTRIB(random_datain_pdu_offsets); 428 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR); 429 /* 430 * Define iscsi_node_attrib_s_random_datain_seq_offsets 431 */ 432 DEF_NACL_ATTRIB(random_datain_seq_offsets); 433 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR); 434 /* 435 * Define iscsi_node_attrib_s_random_r2t_offsets 436 */ 437 DEF_NACL_ATTRIB(random_r2t_offsets); 438 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR); 439 440 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = { 441 &iscsi_nacl_attrib_dataout_timeout.attr, 442 &iscsi_nacl_attrib_dataout_timeout_retries.attr, 443 &iscsi_nacl_attrib_default_erl.attr, 444 &iscsi_nacl_attrib_nopin_timeout.attr, 445 &iscsi_nacl_attrib_nopin_response_timeout.attr, 446 &iscsi_nacl_attrib_random_datain_pdu_offsets.attr, 447 &iscsi_nacl_attrib_random_datain_seq_offsets.attr, 448 &iscsi_nacl_attrib_random_r2t_offsets.attr, 449 NULL, 450 }; 451 452 /* End items for lio_target_nacl_attrib_cit */ 453 454 /* Start items for lio_target_nacl_auth_cit */ 455 456 #define __DEF_NACL_AUTH_STR(prefix, name, flags) \ 457 static ssize_t __iscsi_##prefix##_show_##name( \ 458 struct iscsi_node_acl *nacl, \ 459 char *page) \ 460 { \ 461 struct iscsi_node_auth *auth = &nacl->node_auth; \ 462 \ 463 if (!capable(CAP_SYS_ADMIN)) \ 464 return -EPERM; \ 465 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 466 } \ 467 \ 468 static ssize_t __iscsi_##prefix##_store_##name( \ 469 struct iscsi_node_acl *nacl, \ 470 const char *page, \ 471 size_t count) \ 472 { \ 473 struct iscsi_node_auth *auth = &nacl->node_auth; \ 474 \ 475 if (!capable(CAP_SYS_ADMIN)) \ 476 return -EPERM; \ 477 if (count >= sizeof(auth->name)) \ 478 return -EINVAL; \ 479 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 480 if (!strncmp("NULL", auth->name, 4)) \ 481 auth->naf_flags &= ~flags; \ 482 else \ 483 auth->naf_flags |= flags; \ 484 \ 485 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 486 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 487 auth->authenticate_target = 1; \ 488 else \ 489 auth->authenticate_target = 0; \ 490 \ 491 return count; \ 492 } 493 494 #define __DEF_NACL_AUTH_INT(prefix, name) \ 495 static ssize_t __iscsi_##prefix##_show_##name( \ 496 struct iscsi_node_acl *nacl, \ 497 char *page) \ 498 { \ 499 struct iscsi_node_auth *auth = &nacl->node_auth; \ 500 \ 501 if (!capable(CAP_SYS_ADMIN)) \ 502 return -EPERM; \ 503 \ 504 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 505 } 506 507 #define DEF_NACL_AUTH_STR(name, flags) \ 508 __DEF_NACL_AUTH_STR(nacl_auth, name, flags) \ 509 static ssize_t iscsi_nacl_auth_show_##name( \ 510 struct se_node_acl *nacl, \ 511 char *page) \ 512 { \ 513 return __iscsi_nacl_auth_show_##name(container_of(nacl, \ 514 struct iscsi_node_acl, se_node_acl), page); \ 515 } \ 516 static ssize_t iscsi_nacl_auth_store_##name( \ 517 struct se_node_acl *nacl, \ 518 const char *page, \ 519 size_t count) \ 520 { \ 521 return __iscsi_nacl_auth_store_##name(container_of(nacl, \ 522 struct iscsi_node_acl, se_node_acl), page, count); \ 523 } 524 525 #define DEF_NACL_AUTH_INT(name) \ 526 __DEF_NACL_AUTH_INT(nacl_auth, name) \ 527 static ssize_t iscsi_nacl_auth_show_##name( \ 528 struct se_node_acl *nacl, \ 529 char *page) \ 530 { \ 531 return __iscsi_nacl_auth_show_##name(container_of(nacl, \ 532 struct iscsi_node_acl, se_node_acl), page); \ 533 } 534 535 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode); 536 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name); 537 538 /* 539 * One-way authentication userid 540 */ 541 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET); 542 AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 543 /* 544 * One-way authentication password 545 */ 546 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET); 547 AUTH_ATTR(password, S_IRUGO | S_IWUSR); 548 /* 549 * Enforce mutual authentication 550 */ 551 DEF_NACL_AUTH_INT(authenticate_target); 552 AUTH_ATTR_RO(authenticate_target); 553 /* 554 * Mutual authentication userid 555 */ 556 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 557 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 558 /* 559 * Mutual authentication password 560 */ 561 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 562 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 563 564 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = { 565 &iscsi_nacl_auth_userid.attr, 566 &iscsi_nacl_auth_password.attr, 567 &iscsi_nacl_auth_authenticate_target.attr, 568 &iscsi_nacl_auth_userid_mutual.attr, 569 &iscsi_nacl_auth_password_mutual.attr, 570 NULL, 571 }; 572 573 /* End items for lio_target_nacl_auth_cit */ 574 575 /* Start items for lio_target_nacl_param_cit */ 576 577 #define DEF_NACL_PARAM(name) \ 578 static ssize_t iscsi_nacl_param_show_##name( \ 579 struct se_node_acl *se_nacl, \ 580 char *page) \ 581 { \ 582 struct iscsi_session *sess; \ 583 struct se_session *se_sess; \ 584 ssize_t rb; \ 585 \ 586 spin_lock_bh(&se_nacl->nacl_sess_lock); \ 587 se_sess = se_nacl->nacl_sess; \ 588 if (!se_sess) { \ 589 rb = snprintf(page, PAGE_SIZE, \ 590 "No Active iSCSI Session\n"); \ 591 } else { \ 592 sess = se_sess->fabric_sess_ptr; \ 593 rb = snprintf(page, PAGE_SIZE, "%u\n", \ 594 (u32)sess->sess_ops->name); \ 595 } \ 596 spin_unlock_bh(&se_nacl->nacl_sess_lock); \ 597 \ 598 return rb; \ 599 } 600 601 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name); 602 603 DEF_NACL_PARAM(MaxConnections); 604 NACL_PARAM_ATTR(MaxConnections); 605 606 DEF_NACL_PARAM(InitialR2T); 607 NACL_PARAM_ATTR(InitialR2T); 608 609 DEF_NACL_PARAM(ImmediateData); 610 NACL_PARAM_ATTR(ImmediateData); 611 612 DEF_NACL_PARAM(MaxBurstLength); 613 NACL_PARAM_ATTR(MaxBurstLength); 614 615 DEF_NACL_PARAM(FirstBurstLength); 616 NACL_PARAM_ATTR(FirstBurstLength); 617 618 DEF_NACL_PARAM(DefaultTime2Wait); 619 NACL_PARAM_ATTR(DefaultTime2Wait); 620 621 DEF_NACL_PARAM(DefaultTime2Retain); 622 NACL_PARAM_ATTR(DefaultTime2Retain); 623 624 DEF_NACL_PARAM(MaxOutstandingR2T); 625 NACL_PARAM_ATTR(MaxOutstandingR2T); 626 627 DEF_NACL_PARAM(DataPDUInOrder); 628 NACL_PARAM_ATTR(DataPDUInOrder); 629 630 DEF_NACL_PARAM(DataSequenceInOrder); 631 NACL_PARAM_ATTR(DataSequenceInOrder); 632 633 DEF_NACL_PARAM(ErrorRecoveryLevel); 634 NACL_PARAM_ATTR(ErrorRecoveryLevel); 635 636 static struct configfs_attribute *lio_target_nacl_param_attrs[] = { 637 &iscsi_nacl_param_MaxConnections.attr, 638 &iscsi_nacl_param_InitialR2T.attr, 639 &iscsi_nacl_param_ImmediateData.attr, 640 &iscsi_nacl_param_MaxBurstLength.attr, 641 &iscsi_nacl_param_FirstBurstLength.attr, 642 &iscsi_nacl_param_DefaultTime2Wait.attr, 643 &iscsi_nacl_param_DefaultTime2Retain.attr, 644 &iscsi_nacl_param_MaxOutstandingR2T.attr, 645 &iscsi_nacl_param_DataPDUInOrder.attr, 646 &iscsi_nacl_param_DataSequenceInOrder.attr, 647 &iscsi_nacl_param_ErrorRecoveryLevel.attr, 648 NULL, 649 }; 650 651 /* End items for lio_target_nacl_param_cit */ 652 653 /* Start items for lio_target_acl_cit */ 654 655 static ssize_t lio_target_nacl_show_info( 656 struct se_node_acl *se_nacl, 657 char *page) 658 { 659 struct iscsi_session *sess; 660 struct iscsi_conn *conn; 661 struct se_session *se_sess; 662 ssize_t rb = 0; 663 664 spin_lock_bh(&se_nacl->nacl_sess_lock); 665 se_sess = se_nacl->nacl_sess; 666 if (!se_sess) { 667 rb += sprintf(page+rb, "No active iSCSI Session for Initiator" 668 " Endpoint: %s\n", se_nacl->initiatorname); 669 } else { 670 sess = se_sess->fabric_sess_ptr; 671 672 rb += sprintf(page+rb, "InitiatorName: %s\n", 673 sess->sess_ops->InitiatorName); 674 rb += sprintf(page+rb, "InitiatorAlias: %s\n", 675 sess->sess_ops->InitiatorAlias); 676 677 rb += sprintf(page+rb, 678 "LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ", 679 sess->sid, sess->isid, sess->tsih); 680 rb += sprintf(page+rb, "SessionType: %s\n", 681 (sess->sess_ops->SessionType) ? 682 "Discovery" : "Normal"); 683 rb += sprintf(page+rb, "Session State: "); 684 switch (sess->session_state) { 685 case TARG_SESS_STATE_FREE: 686 rb += sprintf(page+rb, "TARG_SESS_FREE\n"); 687 break; 688 case TARG_SESS_STATE_ACTIVE: 689 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n"); 690 break; 691 case TARG_SESS_STATE_LOGGED_IN: 692 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n"); 693 break; 694 case TARG_SESS_STATE_FAILED: 695 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n"); 696 break; 697 case TARG_SESS_STATE_IN_CONTINUE: 698 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n"); 699 break; 700 default: 701 rb += sprintf(page+rb, "ERROR: Unknown Session" 702 " State!\n"); 703 break; 704 } 705 706 rb += sprintf(page+rb, "---------------------[iSCSI Session" 707 " Values]-----------------------\n"); 708 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN" 709 " : MaxCmdSN : ITT : TTT\n"); 710 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x" 711 " 0x%08x 0x%08x\n", 712 sess->cmdsn_window, 713 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1, 714 sess->exp_cmd_sn, sess->max_cmd_sn, 715 sess->init_task_tag, sess->targ_xfer_tag); 716 rb += sprintf(page+rb, "----------------------[iSCSI" 717 " Connections]-------------------------\n"); 718 719 spin_lock(&sess->conn_lock); 720 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { 721 rb += sprintf(page+rb, "CID: %hu Connection" 722 " State: ", conn->cid); 723 switch (conn->conn_state) { 724 case TARG_CONN_STATE_FREE: 725 rb += sprintf(page+rb, 726 "TARG_CONN_STATE_FREE\n"); 727 break; 728 case TARG_CONN_STATE_XPT_UP: 729 rb += sprintf(page+rb, 730 "TARG_CONN_STATE_XPT_UP\n"); 731 break; 732 case TARG_CONN_STATE_IN_LOGIN: 733 rb += sprintf(page+rb, 734 "TARG_CONN_STATE_IN_LOGIN\n"); 735 break; 736 case TARG_CONN_STATE_LOGGED_IN: 737 rb += sprintf(page+rb, 738 "TARG_CONN_STATE_LOGGED_IN\n"); 739 break; 740 case TARG_CONN_STATE_IN_LOGOUT: 741 rb += sprintf(page+rb, 742 "TARG_CONN_STATE_IN_LOGOUT\n"); 743 break; 744 case TARG_CONN_STATE_LOGOUT_REQUESTED: 745 rb += sprintf(page+rb, 746 "TARG_CONN_STATE_LOGOUT_REQUESTED\n"); 747 break; 748 case TARG_CONN_STATE_CLEANUP_WAIT: 749 rb += sprintf(page+rb, 750 "TARG_CONN_STATE_CLEANUP_WAIT\n"); 751 break; 752 default: 753 rb += sprintf(page+rb, 754 "ERROR: Unknown Connection State!\n"); 755 break; 756 } 757 758 rb += sprintf(page+rb, " Address %s %s", conn->login_ip, 759 (conn->network_transport == ISCSI_TCP) ? 760 "TCP" : "SCTP"); 761 rb += sprintf(page+rb, " StatSN: 0x%08x\n", 762 conn->stat_sn); 763 } 764 spin_unlock(&sess->conn_lock); 765 } 766 spin_unlock_bh(&se_nacl->nacl_sess_lock); 767 768 return rb; 769 } 770 771 TF_NACL_BASE_ATTR_RO(lio_target, info); 772 773 static ssize_t lio_target_nacl_show_cmdsn_depth( 774 struct se_node_acl *se_nacl, 775 char *page) 776 { 777 return sprintf(page, "%u\n", se_nacl->queue_depth); 778 } 779 780 static ssize_t lio_target_nacl_store_cmdsn_depth( 781 struct se_node_acl *se_nacl, 782 const char *page, 783 size_t count) 784 { 785 struct se_portal_group *se_tpg = se_nacl->se_tpg; 786 struct iscsi_portal_group *tpg = container_of(se_tpg, 787 struct iscsi_portal_group, tpg_se_tpg); 788 struct config_item *acl_ci, *tpg_ci, *wwn_ci; 789 u32 cmdsn_depth = 0; 790 int ret; 791 792 ret = kstrtou32(page, 0, &cmdsn_depth); 793 if (ret) 794 return ret; 795 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 796 pr_err("Passed cmdsn_depth: %u exceeds" 797 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth, 798 TA_DEFAULT_CMDSN_DEPTH_MAX); 799 return -EINVAL; 800 } 801 acl_ci = &se_nacl->acl_group.cg_item; 802 if (!acl_ci) { 803 pr_err("Unable to locatel acl_ci\n"); 804 return -EINVAL; 805 } 806 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item; 807 if (!tpg_ci) { 808 pr_err("Unable to locate tpg_ci\n"); 809 return -EINVAL; 810 } 811 wwn_ci = &tpg_ci->ci_group->cg_item; 812 if (!wwn_ci) { 813 pr_err("Unable to locate config_item wwn_ci\n"); 814 return -EINVAL; 815 } 816 817 if (iscsit_get_tpg(tpg) < 0) 818 return -EINVAL; 819 /* 820 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1 821 */ 822 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg, 823 config_item_name(acl_ci), cmdsn_depth, 1); 824 825 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for" 826 "InitiatorName: %s\n", config_item_name(wwn_ci), 827 config_item_name(tpg_ci), cmdsn_depth, 828 config_item_name(acl_ci)); 829 830 iscsit_put_tpg(tpg); 831 return (!ret) ? count : (ssize_t)ret; 832 } 833 834 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR); 835 836 static ssize_t lio_target_nacl_show_tag( 837 struct se_node_acl *se_nacl, 838 char *page) 839 { 840 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag); 841 } 842 843 static ssize_t lio_target_nacl_store_tag( 844 struct se_node_acl *se_nacl, 845 const char *page, 846 size_t count) 847 { 848 int ret; 849 850 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page); 851 852 if (ret < 0) 853 return ret; 854 return count; 855 } 856 857 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR); 858 859 static struct configfs_attribute *lio_target_initiator_attrs[] = { 860 &lio_target_nacl_info.attr, 861 &lio_target_nacl_cmdsn_depth.attr, 862 &lio_target_nacl_tag.attr, 863 NULL, 864 }; 865 866 static struct se_node_acl *lio_tpg_alloc_fabric_acl( 867 struct se_portal_group *se_tpg) 868 { 869 struct iscsi_node_acl *acl; 870 871 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL); 872 if (!acl) { 873 pr_err("Unable to allocate memory for struct iscsi_node_acl\n"); 874 return NULL; 875 } 876 877 return &acl->se_node_acl; 878 } 879 880 static struct se_node_acl *lio_target_make_nodeacl( 881 struct se_portal_group *se_tpg, 882 struct config_group *group, 883 const char *name) 884 { 885 struct config_group *stats_cg; 886 struct iscsi_node_acl *acl; 887 struct se_node_acl *se_nacl_new, *se_nacl; 888 struct iscsi_portal_group *tpg = container_of(se_tpg, 889 struct iscsi_portal_group, tpg_se_tpg); 890 u32 cmdsn_depth; 891 892 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg); 893 if (!se_nacl_new) 894 return ERR_PTR(-ENOMEM); 895 896 cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth; 897 /* 898 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 899 * when converting a NdoeACL from demo mode -> explict 900 */ 901 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 902 name, cmdsn_depth); 903 if (IS_ERR(se_nacl)) 904 return se_nacl; 905 906 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl); 907 stats_cg = &se_nacl->acl_fabric_stat_group; 908 909 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 910 GFP_KERNEL); 911 if (!stats_cg->default_groups) { 912 pr_err("Unable to allocate memory for" 913 " stats_cg->default_groups\n"); 914 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1); 915 kfree(acl); 916 return ERR_PTR(-ENOMEM); 917 } 918 919 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group; 920 stats_cg->default_groups[1] = NULL; 921 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, 922 "iscsi_sess_stats", &iscsi_stat_sess_cit); 923 924 return se_nacl; 925 } 926 927 static void lio_target_drop_nodeacl( 928 struct se_node_acl *se_nacl) 929 { 930 struct se_portal_group *se_tpg = se_nacl->se_tpg; 931 struct iscsi_node_acl *acl = container_of(se_nacl, 932 struct iscsi_node_acl, se_node_acl); 933 struct config_item *df_item; 934 struct config_group *stats_cg; 935 int i; 936 937 stats_cg = &acl->se_node_acl.acl_fabric_stat_group; 938 for (i = 0; stats_cg->default_groups[i]; i++) { 939 df_item = &stats_cg->default_groups[i]->cg_item; 940 stats_cg->default_groups[i] = NULL; 941 config_item_put(df_item); 942 } 943 kfree(stats_cg->default_groups); 944 945 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1); 946 kfree(acl); 947 } 948 949 /* End items for lio_target_acl_cit */ 950 951 /* Start items for lio_target_tpg_attrib_cit */ 952 953 #define DEF_TPG_ATTRIB(name) \ 954 \ 955 static ssize_t iscsi_tpg_attrib_show_##name( \ 956 struct se_portal_group *se_tpg, \ 957 char *page) \ 958 { \ 959 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 960 struct iscsi_portal_group, tpg_se_tpg); \ 961 ssize_t rb; \ 962 \ 963 if (iscsit_get_tpg(tpg) < 0) \ 964 return -EINVAL; \ 965 \ 966 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 967 iscsit_put_tpg(tpg); \ 968 return rb; \ 969 } \ 970 \ 971 static ssize_t iscsi_tpg_attrib_store_##name( \ 972 struct se_portal_group *se_tpg, \ 973 const char *page, \ 974 size_t count) \ 975 { \ 976 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 977 struct iscsi_portal_group, tpg_se_tpg); \ 978 u32 val; \ 979 int ret; \ 980 \ 981 if (iscsit_get_tpg(tpg) < 0) \ 982 return -EINVAL; \ 983 \ 984 ret = kstrtou32(page, 0, &val); \ 985 if (ret) \ 986 goto out; \ 987 ret = iscsit_ta_##name(tpg, val); \ 988 if (ret < 0) \ 989 goto out; \ 990 \ 991 iscsit_put_tpg(tpg); \ 992 return count; \ 993 out: \ 994 iscsit_put_tpg(tpg); \ 995 return ret; \ 996 } 997 998 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode); 999 1000 /* 1001 * Define iscsi_tpg_attrib_s_authentication 1002 */ 1003 DEF_TPG_ATTRIB(authentication); 1004 TPG_ATTR(authentication, S_IRUGO | S_IWUSR); 1005 /* 1006 * Define iscsi_tpg_attrib_s_login_timeout 1007 */ 1008 DEF_TPG_ATTRIB(login_timeout); 1009 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR); 1010 /* 1011 * Define iscsi_tpg_attrib_s_netif_timeout 1012 */ 1013 DEF_TPG_ATTRIB(netif_timeout); 1014 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR); 1015 /* 1016 * Define iscsi_tpg_attrib_s_generate_node_acls 1017 */ 1018 DEF_TPG_ATTRIB(generate_node_acls); 1019 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 1020 /* 1021 * Define iscsi_tpg_attrib_s_default_cmdsn_depth 1022 */ 1023 DEF_TPG_ATTRIB(default_cmdsn_depth); 1024 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR); 1025 /* 1026 Define iscsi_tpg_attrib_s_cache_dynamic_acls 1027 */ 1028 DEF_TPG_ATTRIB(cache_dynamic_acls); 1029 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 1030 /* 1031 * Define iscsi_tpg_attrib_s_demo_mode_write_protect 1032 */ 1033 DEF_TPG_ATTRIB(demo_mode_write_protect); 1034 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 1035 /* 1036 * Define iscsi_tpg_attrib_s_prod_mode_write_protect 1037 */ 1038 DEF_TPG_ATTRIB(prod_mode_write_protect); 1039 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 1040 /* 1041 * Define iscsi_tpg_attrib_s_demo_mode_discovery, 1042 */ 1043 DEF_TPG_ATTRIB(demo_mode_discovery); 1044 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR); 1045 /* 1046 * Define iscsi_tpg_attrib_s_default_erl 1047 */ 1048 DEF_TPG_ATTRIB(default_erl); 1049 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR); 1050 /* 1051 * Define iscsi_tpg_attrib_s_t10_pi 1052 */ 1053 DEF_TPG_ATTRIB(t10_pi); 1054 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR); 1055 /* 1056 * Define iscsi_tpg_attrib_s_fabric_prot_type 1057 */ 1058 DEF_TPG_ATTRIB(fabric_prot_type); 1059 TPG_ATTR(fabric_prot_type, S_IRUGO | S_IWUSR); 1060 1061 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { 1062 &iscsi_tpg_attrib_authentication.attr, 1063 &iscsi_tpg_attrib_login_timeout.attr, 1064 &iscsi_tpg_attrib_netif_timeout.attr, 1065 &iscsi_tpg_attrib_generate_node_acls.attr, 1066 &iscsi_tpg_attrib_default_cmdsn_depth.attr, 1067 &iscsi_tpg_attrib_cache_dynamic_acls.attr, 1068 &iscsi_tpg_attrib_demo_mode_write_protect.attr, 1069 &iscsi_tpg_attrib_prod_mode_write_protect.attr, 1070 &iscsi_tpg_attrib_demo_mode_discovery.attr, 1071 &iscsi_tpg_attrib_default_erl.attr, 1072 &iscsi_tpg_attrib_t10_pi.attr, 1073 &iscsi_tpg_attrib_fabric_prot_type.attr, 1074 NULL, 1075 }; 1076 1077 /* End items for lio_target_tpg_attrib_cit */ 1078 1079 /* Start items for lio_target_tpg_auth_cit */ 1080 1081 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \ 1082 static ssize_t __iscsi_##prefix##_show_##name( \ 1083 struct se_portal_group *se_tpg, \ 1084 char *page) \ 1085 { \ 1086 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1087 struct iscsi_portal_group, tpg_se_tpg); \ 1088 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1089 \ 1090 if (!capable(CAP_SYS_ADMIN)) \ 1091 return -EPERM; \ 1092 \ 1093 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 1094 } \ 1095 \ 1096 static ssize_t __iscsi_##prefix##_store_##name( \ 1097 struct se_portal_group *se_tpg, \ 1098 const char *page, \ 1099 size_t count) \ 1100 { \ 1101 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1102 struct iscsi_portal_group, tpg_se_tpg); \ 1103 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1104 \ 1105 if (!capable(CAP_SYS_ADMIN)) \ 1106 return -EPERM; \ 1107 \ 1108 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 1109 if (!(strncmp("NULL", auth->name, 4))) \ 1110 auth->naf_flags &= ~flags; \ 1111 else \ 1112 auth->naf_flags |= flags; \ 1113 \ 1114 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 1115 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 1116 auth->authenticate_target = 1; \ 1117 else \ 1118 auth->authenticate_target = 0; \ 1119 \ 1120 return count; \ 1121 } 1122 1123 #define __DEF_TPG_AUTH_INT(prefix, name) \ 1124 static ssize_t __iscsi_##prefix##_show_##name( \ 1125 struct se_portal_group *se_tpg, \ 1126 char *page) \ 1127 { \ 1128 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1129 struct iscsi_portal_group, tpg_se_tpg); \ 1130 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1131 \ 1132 if (!capable(CAP_SYS_ADMIN)) \ 1133 return -EPERM; \ 1134 \ 1135 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 1136 } 1137 1138 #define DEF_TPG_AUTH_STR(name, flags) \ 1139 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \ 1140 static ssize_t iscsi_tpg_auth_show_##name( \ 1141 struct se_portal_group *se_tpg, \ 1142 char *page) \ 1143 { \ 1144 return __iscsi_tpg_auth_show_##name(se_tpg, page); \ 1145 } \ 1146 \ 1147 static ssize_t iscsi_tpg_auth_store_##name( \ 1148 struct se_portal_group *se_tpg, \ 1149 const char *page, \ 1150 size_t count) \ 1151 { \ 1152 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \ 1153 } 1154 1155 #define DEF_TPG_AUTH_INT(name) \ 1156 __DEF_TPG_AUTH_INT(tpg_auth, name) \ 1157 static ssize_t iscsi_tpg_auth_show_##name( \ 1158 struct se_portal_group *se_tpg, \ 1159 char *page) \ 1160 { \ 1161 return __iscsi_tpg_auth_show_##name(se_tpg, page); \ 1162 } 1163 1164 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode); 1165 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name); 1166 1167 /* 1168 * * One-way authentication userid 1169 * */ 1170 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET); 1171 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 1172 /* 1173 * * One-way authentication password 1174 * */ 1175 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET); 1176 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR); 1177 /* 1178 * * Enforce mutual authentication 1179 * */ 1180 DEF_TPG_AUTH_INT(authenticate_target); 1181 TPG_AUTH_ATTR_RO(authenticate_target); 1182 /* 1183 * * Mutual authentication userid 1184 * */ 1185 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1186 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 1187 /* 1188 * * Mutual authentication password 1189 * */ 1190 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1191 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 1192 1193 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = { 1194 &iscsi_tpg_auth_userid.attr, 1195 &iscsi_tpg_auth_password.attr, 1196 &iscsi_tpg_auth_authenticate_target.attr, 1197 &iscsi_tpg_auth_userid_mutual.attr, 1198 &iscsi_tpg_auth_password_mutual.attr, 1199 NULL, 1200 }; 1201 1202 /* End items for lio_target_tpg_auth_cit */ 1203 1204 /* Start items for lio_target_tpg_param_cit */ 1205 1206 #define DEF_TPG_PARAM(name) \ 1207 static ssize_t iscsi_tpg_param_show_##name( \ 1208 struct se_portal_group *se_tpg, \ 1209 char *page) \ 1210 { \ 1211 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1212 struct iscsi_portal_group, tpg_se_tpg); \ 1213 struct iscsi_param *param; \ 1214 ssize_t rb; \ 1215 \ 1216 if (iscsit_get_tpg(tpg) < 0) \ 1217 return -EINVAL; \ 1218 \ 1219 param = iscsi_find_param_from_key(__stringify(name), \ 1220 tpg->param_list); \ 1221 if (!param) { \ 1222 iscsit_put_tpg(tpg); \ 1223 return -EINVAL; \ 1224 } \ 1225 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \ 1226 \ 1227 iscsit_put_tpg(tpg); \ 1228 return rb; \ 1229 } \ 1230 static ssize_t iscsi_tpg_param_store_##name( \ 1231 struct se_portal_group *se_tpg, \ 1232 const char *page, \ 1233 size_t count) \ 1234 { \ 1235 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1236 struct iscsi_portal_group, tpg_se_tpg); \ 1237 char *buf; \ 1238 int ret, len; \ 1239 \ 1240 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \ 1241 if (!buf) \ 1242 return -ENOMEM; \ 1243 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \ 1244 if (isspace(buf[len-1])) \ 1245 buf[len-1] = '\0'; /* Kill newline */ \ 1246 \ 1247 if (iscsit_get_tpg(tpg) < 0) { \ 1248 kfree(buf); \ 1249 return -EINVAL; \ 1250 } \ 1251 \ 1252 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \ 1253 if (ret < 0) \ 1254 goto out; \ 1255 \ 1256 kfree(buf); \ 1257 iscsit_put_tpg(tpg); \ 1258 return count; \ 1259 out: \ 1260 kfree(buf); \ 1261 iscsit_put_tpg(tpg); \ 1262 return -EINVAL; \ 1263 } 1264 1265 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode); 1266 1267 DEF_TPG_PARAM(AuthMethod); 1268 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR); 1269 1270 DEF_TPG_PARAM(HeaderDigest); 1271 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR); 1272 1273 DEF_TPG_PARAM(DataDigest); 1274 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR); 1275 1276 DEF_TPG_PARAM(MaxConnections); 1277 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR); 1278 1279 DEF_TPG_PARAM(TargetAlias); 1280 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR); 1281 1282 DEF_TPG_PARAM(InitialR2T); 1283 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR); 1284 1285 DEF_TPG_PARAM(ImmediateData); 1286 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR); 1287 1288 DEF_TPG_PARAM(MaxRecvDataSegmentLength); 1289 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR); 1290 1291 DEF_TPG_PARAM(MaxXmitDataSegmentLength); 1292 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR); 1293 1294 DEF_TPG_PARAM(MaxBurstLength); 1295 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR); 1296 1297 DEF_TPG_PARAM(FirstBurstLength); 1298 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR); 1299 1300 DEF_TPG_PARAM(DefaultTime2Wait); 1301 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR); 1302 1303 DEF_TPG_PARAM(DefaultTime2Retain); 1304 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR); 1305 1306 DEF_TPG_PARAM(MaxOutstandingR2T); 1307 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR); 1308 1309 DEF_TPG_PARAM(DataPDUInOrder); 1310 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR); 1311 1312 DEF_TPG_PARAM(DataSequenceInOrder); 1313 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR); 1314 1315 DEF_TPG_PARAM(ErrorRecoveryLevel); 1316 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR); 1317 1318 DEF_TPG_PARAM(IFMarker); 1319 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR); 1320 1321 DEF_TPG_PARAM(OFMarker); 1322 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR); 1323 1324 DEF_TPG_PARAM(IFMarkInt); 1325 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR); 1326 1327 DEF_TPG_PARAM(OFMarkInt); 1328 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR); 1329 1330 static struct configfs_attribute *lio_target_tpg_param_attrs[] = { 1331 &iscsi_tpg_param_AuthMethod.attr, 1332 &iscsi_tpg_param_HeaderDigest.attr, 1333 &iscsi_tpg_param_DataDigest.attr, 1334 &iscsi_tpg_param_MaxConnections.attr, 1335 &iscsi_tpg_param_TargetAlias.attr, 1336 &iscsi_tpg_param_InitialR2T.attr, 1337 &iscsi_tpg_param_ImmediateData.attr, 1338 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr, 1339 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr, 1340 &iscsi_tpg_param_MaxBurstLength.attr, 1341 &iscsi_tpg_param_FirstBurstLength.attr, 1342 &iscsi_tpg_param_DefaultTime2Wait.attr, 1343 &iscsi_tpg_param_DefaultTime2Retain.attr, 1344 &iscsi_tpg_param_MaxOutstandingR2T.attr, 1345 &iscsi_tpg_param_DataPDUInOrder.attr, 1346 &iscsi_tpg_param_DataSequenceInOrder.attr, 1347 &iscsi_tpg_param_ErrorRecoveryLevel.attr, 1348 &iscsi_tpg_param_IFMarker.attr, 1349 &iscsi_tpg_param_OFMarker.attr, 1350 &iscsi_tpg_param_IFMarkInt.attr, 1351 &iscsi_tpg_param_OFMarkInt.attr, 1352 NULL, 1353 }; 1354 1355 /* End items for lio_target_tpg_param_cit */ 1356 1357 /* Start items for lio_target_tpg_cit */ 1358 1359 static ssize_t lio_target_tpg_show_enable( 1360 struct se_portal_group *se_tpg, 1361 char *page) 1362 { 1363 struct iscsi_portal_group *tpg = container_of(se_tpg, 1364 struct iscsi_portal_group, tpg_se_tpg); 1365 ssize_t len; 1366 1367 spin_lock(&tpg->tpg_state_lock); 1368 len = sprintf(page, "%d\n", 1369 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0); 1370 spin_unlock(&tpg->tpg_state_lock); 1371 1372 return len; 1373 } 1374 1375 static ssize_t lio_target_tpg_store_enable( 1376 struct se_portal_group *se_tpg, 1377 const char *page, 1378 size_t count) 1379 { 1380 struct iscsi_portal_group *tpg = container_of(se_tpg, 1381 struct iscsi_portal_group, tpg_se_tpg); 1382 u32 op; 1383 int ret; 1384 1385 ret = kstrtou32(page, 0, &op); 1386 if (ret) 1387 return ret; 1388 if ((op != 1) && (op != 0)) { 1389 pr_err("Illegal value for tpg_enable: %u\n", op); 1390 return -EINVAL; 1391 } 1392 1393 ret = iscsit_get_tpg(tpg); 1394 if (ret < 0) 1395 return -EINVAL; 1396 1397 if (op) { 1398 ret = iscsit_tpg_enable_portal_group(tpg); 1399 if (ret < 0) 1400 goto out; 1401 } else { 1402 /* 1403 * iscsit_tpg_disable_portal_group() assumes force=1 1404 */ 1405 ret = iscsit_tpg_disable_portal_group(tpg, 1); 1406 if (ret < 0) 1407 goto out; 1408 } 1409 1410 iscsit_put_tpg(tpg); 1411 return count; 1412 out: 1413 iscsit_put_tpg(tpg); 1414 return -EINVAL; 1415 } 1416 1417 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR); 1418 1419 static ssize_t lio_target_tpg_show_dynamic_sessions( 1420 struct se_portal_group *se_tpg, 1421 char *page) 1422 { 1423 return target_show_dynamic_sessions(se_tpg, page); 1424 } 1425 1426 TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions); 1427 1428 static struct configfs_attribute *lio_target_tpg_attrs[] = { 1429 &lio_target_tpg_enable.attr, 1430 &lio_target_tpg_dynamic_sessions.attr, 1431 NULL, 1432 }; 1433 1434 /* End items for lio_target_tpg_cit */ 1435 1436 /* Start items for lio_target_tiqn_cit */ 1437 1438 static struct se_portal_group *lio_target_tiqn_addtpg( 1439 struct se_wwn *wwn, 1440 struct config_group *group, 1441 const char *name) 1442 { 1443 struct iscsi_portal_group *tpg; 1444 struct iscsi_tiqn *tiqn; 1445 char *tpgt_str; 1446 int ret; 1447 u16 tpgt; 1448 1449 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1450 /* 1451 * Only tpgt_# directory groups can be created below 1452 * target/iscsi/iqn.superturodiskarry/ 1453 */ 1454 tpgt_str = strstr(name, "tpgt_"); 1455 if (!tpgt_str) { 1456 pr_err("Unable to locate \"tpgt_#\" directory" 1457 " group\n"); 1458 return NULL; 1459 } 1460 tpgt_str += 5; /* Skip ahead of "tpgt_" */ 1461 ret = kstrtou16(tpgt_str, 0, &tpgt); 1462 if (ret) 1463 return NULL; 1464 1465 tpg = iscsit_alloc_portal_group(tiqn, tpgt); 1466 if (!tpg) 1467 return NULL; 1468 1469 ret = core_tpg_register( 1470 &lio_target_fabric_configfs->tf_ops, 1471 wwn, &tpg->tpg_se_tpg, tpg, 1472 TRANSPORT_TPG_TYPE_NORMAL); 1473 if (ret < 0) 1474 return NULL; 1475 1476 ret = iscsit_tpg_add_portal_group(tiqn, tpg); 1477 if (ret != 0) 1478 goto out; 1479 1480 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1481 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n", 1482 name); 1483 return &tpg->tpg_se_tpg; 1484 out: 1485 core_tpg_deregister(&tpg->tpg_se_tpg); 1486 kfree(tpg); 1487 return NULL; 1488 } 1489 1490 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg) 1491 { 1492 struct iscsi_portal_group *tpg; 1493 struct iscsi_tiqn *tiqn; 1494 1495 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1496 tiqn = tpg->tpg_tiqn; 1497 /* 1498 * iscsit_tpg_del_portal_group() assumes force=1 1499 */ 1500 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n"); 1501 iscsit_tpg_del_portal_group(tiqn, tpg, 1); 1502 } 1503 1504 /* End items for lio_target_tiqn_cit */ 1505 1506 /* Start LIO-Target TIQN struct contig_item lio_target_cit */ 1507 1508 static ssize_t lio_target_wwn_show_attr_lio_version( 1509 struct target_fabric_configfs *tf, 1510 char *page) 1511 { 1512 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n"); 1513 } 1514 1515 TF_WWN_ATTR_RO(lio_target, lio_version); 1516 1517 static struct configfs_attribute *lio_target_wwn_attrs[] = { 1518 &lio_target_wwn_lio_version.attr, 1519 NULL, 1520 }; 1521 1522 static struct se_wwn *lio_target_call_coreaddtiqn( 1523 struct target_fabric_configfs *tf, 1524 struct config_group *group, 1525 const char *name) 1526 { 1527 struct config_group *stats_cg; 1528 struct iscsi_tiqn *tiqn; 1529 1530 tiqn = iscsit_add_tiqn((unsigned char *)name); 1531 if (IS_ERR(tiqn)) 1532 return ERR_CAST(tiqn); 1533 /* 1534 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group. 1535 */ 1536 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group; 1537 1538 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 1539 GFP_KERNEL); 1540 if (!stats_cg->default_groups) { 1541 pr_err("Unable to allocate memory for" 1542 " stats_cg->default_groups\n"); 1543 iscsit_del_tiqn(tiqn); 1544 return ERR_PTR(-ENOMEM); 1545 } 1546 1547 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group; 1548 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group; 1549 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group; 1550 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group; 1551 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group; 1552 stats_cg->default_groups[5] = NULL; 1553 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1554 "iscsi_instance", &iscsi_stat_instance_cit); 1555 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1556 "iscsi_sess_err", &iscsi_stat_sess_err_cit); 1557 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1558 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); 1559 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1560 "iscsi_login_stats", &iscsi_stat_login_cit); 1561 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1562 "iscsi_logout_stats", &iscsi_stat_logout_cit); 1563 1564 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1565 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:" 1566 " %s\n", name); 1567 return &tiqn->tiqn_wwn; 1568 } 1569 1570 static void lio_target_call_coredeltiqn( 1571 struct se_wwn *wwn) 1572 { 1573 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1574 struct config_item *df_item; 1575 struct config_group *stats_cg; 1576 int i; 1577 1578 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group; 1579 for (i = 0; stats_cg->default_groups[i]; i++) { 1580 df_item = &stats_cg->default_groups[i]->cg_item; 1581 stats_cg->default_groups[i] = NULL; 1582 config_item_put(df_item); 1583 } 1584 kfree(stats_cg->default_groups); 1585 1586 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n", 1587 tiqn->tiqn); 1588 iscsit_del_tiqn(tiqn); 1589 } 1590 1591 /* End LIO-Target TIQN struct contig_lio_target_cit */ 1592 1593 /* Start lio_target_discovery_auth_cit */ 1594 1595 #define DEF_DISC_AUTH_STR(name, flags) \ 1596 __DEF_NACL_AUTH_STR(disc, name, flags) \ 1597 static ssize_t iscsi_disc_show_##name( \ 1598 struct target_fabric_configfs *tf, \ 1599 char *page) \ 1600 { \ 1601 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \ 1602 page); \ 1603 } \ 1604 static ssize_t iscsi_disc_store_##name( \ 1605 struct target_fabric_configfs *tf, \ 1606 const char *page, \ 1607 size_t count) \ 1608 { \ 1609 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \ 1610 page, count); \ 1611 } 1612 1613 #define DEF_DISC_AUTH_INT(name) \ 1614 __DEF_NACL_AUTH_INT(disc, name) \ 1615 static ssize_t iscsi_disc_show_##name( \ 1616 struct target_fabric_configfs *tf, \ 1617 char *page) \ 1618 { \ 1619 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \ 1620 page); \ 1621 } 1622 1623 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode) 1624 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name) 1625 1626 /* 1627 * One-way authentication userid 1628 */ 1629 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET); 1630 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 1631 /* 1632 * One-way authentication password 1633 */ 1634 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET); 1635 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR); 1636 /* 1637 * Enforce mutual authentication 1638 */ 1639 DEF_DISC_AUTH_INT(authenticate_target); 1640 DISC_AUTH_ATTR_RO(authenticate_target); 1641 /* 1642 * Mutual authentication userid 1643 */ 1644 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1645 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 1646 /* 1647 * Mutual authentication password 1648 */ 1649 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1650 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 1651 1652 /* 1653 * enforce_discovery_auth 1654 */ 1655 static ssize_t iscsi_disc_show_enforce_discovery_auth( 1656 struct target_fabric_configfs *tf, 1657 char *page) 1658 { 1659 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth; 1660 1661 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth); 1662 } 1663 1664 static ssize_t iscsi_disc_store_enforce_discovery_auth( 1665 struct target_fabric_configfs *tf, 1666 const char *page, 1667 size_t count) 1668 { 1669 struct iscsi_param *param; 1670 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg; 1671 u32 op; 1672 int err; 1673 1674 err = kstrtou32(page, 0, &op); 1675 if (err) 1676 return -EINVAL; 1677 if ((op != 1) && (op != 0)) { 1678 pr_err("Illegal value for enforce_discovery_auth:" 1679 " %u\n", op); 1680 return -EINVAL; 1681 } 1682 1683 if (!discovery_tpg) { 1684 pr_err("iscsit_global->discovery_tpg is NULL\n"); 1685 return -EINVAL; 1686 } 1687 1688 param = iscsi_find_param_from_key(AUTHMETHOD, 1689 discovery_tpg->param_list); 1690 if (!param) 1691 return -EINVAL; 1692 1693 if (op) { 1694 /* 1695 * Reset the AuthMethod key to CHAP. 1696 */ 1697 if (iscsi_update_param_value(param, CHAP) < 0) 1698 return -EINVAL; 1699 1700 discovery_tpg->tpg_attrib.authentication = 1; 1701 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1; 1702 pr_debug("LIO-CORE[0] Successfully enabled" 1703 " authentication enforcement for iSCSI" 1704 " Discovery TPG\n"); 1705 } else { 1706 /* 1707 * Reset the AuthMethod key to CHAP,None 1708 */ 1709 if (iscsi_update_param_value(param, "CHAP,None") < 0) 1710 return -EINVAL; 1711 1712 discovery_tpg->tpg_attrib.authentication = 0; 1713 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0; 1714 pr_debug("LIO-CORE[0] Successfully disabled" 1715 " authentication enforcement for iSCSI" 1716 " Discovery TPG\n"); 1717 } 1718 1719 return count; 1720 } 1721 1722 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR); 1723 1724 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { 1725 &iscsi_disc_userid.attr, 1726 &iscsi_disc_password.attr, 1727 &iscsi_disc_authenticate_target.attr, 1728 &iscsi_disc_userid_mutual.attr, 1729 &iscsi_disc_password_mutual.attr, 1730 &iscsi_disc_enforce_discovery_auth.attr, 1731 NULL, 1732 }; 1733 1734 /* End lio_target_discovery_auth_cit */ 1735 1736 /* Start functions for target_core_fabric_ops */ 1737 1738 static char *iscsi_get_fabric_name(void) 1739 { 1740 return "iSCSI"; 1741 } 1742 1743 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd) 1744 { 1745 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1746 1747 /* only used for printks or comparism with ->ref_task_tag */ 1748 return (__force u32)cmd->init_task_tag; 1749 } 1750 1751 static int iscsi_get_cmd_state(struct se_cmd *se_cmd) 1752 { 1753 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1754 1755 return cmd->i_state; 1756 } 1757 1758 static u32 lio_sess_get_index(struct se_session *se_sess) 1759 { 1760 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1761 1762 return sess->session_index; 1763 } 1764 1765 static u32 lio_sess_get_initiator_sid( 1766 struct se_session *se_sess, 1767 unsigned char *buf, 1768 u32 size) 1769 { 1770 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1771 /* 1772 * iSCSI Initiator Session Identifier from RFC-3720. 1773 */ 1774 return snprintf(buf, size, "%6phN", sess->isid); 1775 } 1776 1777 static int lio_queue_data_in(struct se_cmd *se_cmd) 1778 { 1779 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1780 1781 cmd->i_state = ISTATE_SEND_DATAIN; 1782 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd); 1783 1784 return 0; 1785 } 1786 1787 static int lio_write_pending(struct se_cmd *se_cmd) 1788 { 1789 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1790 struct iscsi_conn *conn = cmd->conn; 1791 1792 if (!cmd->immediate_data && !cmd->unsolicited_data) 1793 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false); 1794 1795 return 0; 1796 } 1797 1798 static int lio_write_pending_status(struct se_cmd *se_cmd) 1799 { 1800 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1801 int ret; 1802 1803 spin_lock_bh(&cmd->istate_lock); 1804 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT); 1805 spin_unlock_bh(&cmd->istate_lock); 1806 1807 return ret; 1808 } 1809 1810 static int lio_queue_status(struct se_cmd *se_cmd) 1811 { 1812 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1813 1814 cmd->i_state = ISTATE_SEND_STATUS; 1815 1816 if (cmd->se_cmd.scsi_status || cmd->sense_reason) { 1817 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1818 return 0; 1819 } 1820 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd); 1821 1822 return 0; 1823 } 1824 1825 static void lio_queue_tm_rsp(struct se_cmd *se_cmd) 1826 { 1827 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1828 1829 cmd->i_state = ISTATE_SEND_TASKMGTRSP; 1830 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1831 } 1832 1833 static void lio_aborted_task(struct se_cmd *se_cmd) 1834 { 1835 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1836 1837 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd); 1838 } 1839 1840 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) 1841 { 1842 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1843 1844 return &tpg->tpg_tiqn->tiqn[0]; 1845 } 1846 1847 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg) 1848 { 1849 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1850 1851 return tpg->tpgt; 1852 } 1853 1854 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) 1855 { 1856 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1857 1858 return tpg->tpg_attrib.default_cmdsn_depth; 1859 } 1860 1861 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) 1862 { 1863 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1864 1865 return tpg->tpg_attrib.generate_node_acls; 1866 } 1867 1868 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) 1869 { 1870 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1871 1872 return tpg->tpg_attrib.cache_dynamic_acls; 1873 } 1874 1875 static int lio_tpg_check_demo_mode_write_protect( 1876 struct se_portal_group *se_tpg) 1877 { 1878 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1879 1880 return tpg->tpg_attrib.demo_mode_write_protect; 1881 } 1882 1883 static int lio_tpg_check_prod_mode_write_protect( 1884 struct se_portal_group *se_tpg) 1885 { 1886 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1887 1888 return tpg->tpg_attrib.prod_mode_write_protect; 1889 } 1890 1891 static int lio_tpg_check_prot_fabric_only( 1892 struct se_portal_group *se_tpg) 1893 { 1894 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1895 /* 1896 * Only report fabric_prot_type if t10_pi has also been enabled 1897 * for incoming ib_isert sessions. 1898 */ 1899 if (!tpg->tpg_attrib.t10_pi) 1900 return 0; 1901 1902 return tpg->tpg_attrib.fabric_prot_type; 1903 } 1904 1905 static void lio_tpg_release_fabric_acl( 1906 struct se_portal_group *se_tpg, 1907 struct se_node_acl *se_acl) 1908 { 1909 struct iscsi_node_acl *acl = container_of(se_acl, 1910 struct iscsi_node_acl, se_node_acl); 1911 kfree(acl); 1912 } 1913 1914 /* 1915 * Called with spin_lock_bh(struct se_portal_group->session_lock) held.. 1916 * 1917 * Also, this function calls iscsit_inc_session_usage_count() on the 1918 * struct iscsi_session in question. 1919 */ 1920 static int lio_tpg_shutdown_session(struct se_session *se_sess) 1921 { 1922 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1923 1924 spin_lock(&sess->conn_lock); 1925 if (atomic_read(&sess->session_fall_back_to_erl0) || 1926 atomic_read(&sess->session_logout) || 1927 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) { 1928 spin_unlock(&sess->conn_lock); 1929 return 0; 1930 } 1931 atomic_set(&sess->session_reinstatement, 1); 1932 spin_unlock(&sess->conn_lock); 1933 1934 iscsit_stop_time2retain_timer(sess); 1935 iscsit_stop_session(sess, 1, 1); 1936 1937 return 1; 1938 } 1939 1940 /* 1941 * Calls iscsit_dec_session_usage_count() as inverse of 1942 * lio_tpg_shutdown_session() 1943 */ 1944 static void lio_tpg_close_session(struct se_session *se_sess) 1945 { 1946 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1947 /* 1948 * If the iSCSI Session for the iSCSI Initiator Node exists, 1949 * forcefully shutdown the iSCSI NEXUS. 1950 */ 1951 iscsit_close_session(sess); 1952 } 1953 1954 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg) 1955 { 1956 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1957 1958 return tpg->tpg_tiqn->tiqn_index; 1959 } 1960 1961 static void lio_set_default_node_attributes(struct se_node_acl *se_acl) 1962 { 1963 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl, 1964 se_node_acl); 1965 struct se_portal_group *se_tpg = se_acl->se_tpg; 1966 struct iscsi_portal_group *tpg = container_of(se_tpg, 1967 struct iscsi_portal_group, tpg_se_tpg); 1968 1969 acl->node_attrib.nacl = acl; 1970 iscsit_set_default_node_attribues(acl, tpg); 1971 } 1972 1973 static int lio_check_stop_free(struct se_cmd *se_cmd) 1974 { 1975 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 1976 } 1977 1978 static void lio_release_cmd(struct se_cmd *se_cmd) 1979 { 1980 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1981 1982 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); 1983 iscsit_release_cmd(cmd); 1984 } 1985 1986 /* End functions for target_core_fabric_ops */ 1987 1988 int iscsi_target_register_configfs(void) 1989 { 1990 struct target_fabric_configfs *fabric; 1991 int ret; 1992 1993 lio_target_fabric_configfs = NULL; 1994 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi"); 1995 if (IS_ERR(fabric)) { 1996 pr_err("target_fabric_configfs_init() for" 1997 " LIO-Target failed!\n"); 1998 return PTR_ERR(fabric); 1999 } 2000 /* 2001 * Setup the fabric API of function pointers used by target_core_mod.. 2002 */ 2003 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name; 2004 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident; 2005 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn; 2006 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag; 2007 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth; 2008 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id; 2009 fabric->tf_ops.tpg_get_pr_transport_id_len = 2010 &iscsi_get_pr_transport_id_len; 2011 fabric->tf_ops.tpg_parse_pr_out_transport_id = 2012 &iscsi_parse_pr_out_transport_id; 2013 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode; 2014 fabric->tf_ops.tpg_check_demo_mode_cache = 2015 &lio_tpg_check_demo_mode_cache; 2016 fabric->tf_ops.tpg_check_demo_mode_write_protect = 2017 &lio_tpg_check_demo_mode_write_protect; 2018 fabric->tf_ops.tpg_check_prod_mode_write_protect = 2019 &lio_tpg_check_prod_mode_write_protect; 2020 fabric->tf_ops.tpg_check_prot_fabric_only = 2021 &lio_tpg_check_prot_fabric_only; 2022 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl; 2023 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl; 2024 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index; 2025 fabric->tf_ops.check_stop_free = &lio_check_stop_free, 2026 fabric->tf_ops.release_cmd = &lio_release_cmd; 2027 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session; 2028 fabric->tf_ops.close_session = &lio_tpg_close_session; 2029 fabric->tf_ops.sess_get_index = &lio_sess_get_index; 2030 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid; 2031 fabric->tf_ops.write_pending = &lio_write_pending; 2032 fabric->tf_ops.write_pending_status = &lio_write_pending_status; 2033 fabric->tf_ops.set_default_node_attributes = 2034 &lio_set_default_node_attributes; 2035 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag; 2036 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state; 2037 fabric->tf_ops.queue_data_in = &lio_queue_data_in; 2038 fabric->tf_ops.queue_status = &lio_queue_status; 2039 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp; 2040 fabric->tf_ops.aborted_task = &lio_aborted_task; 2041 /* 2042 * Setup function pointers for generic logic in target_core_fabric_configfs.c 2043 */ 2044 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn; 2045 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn; 2046 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg; 2047 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg; 2048 fabric->tf_ops.fabric_post_link = NULL; 2049 fabric->tf_ops.fabric_pre_unlink = NULL; 2050 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg; 2051 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg; 2052 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl; 2053 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl; 2054 /* 2055 * Setup default attribute lists for various fabric->tf_cit_tmpl 2056 * sturct config_item_type's 2057 */ 2058 fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs; 2059 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs; 2060 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs; 2061 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs; 2062 fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs; 2063 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs; 2064 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs; 2065 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs; 2066 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs; 2067 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs; 2068 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs; 2069 2070 ret = target_fabric_configfs_register(fabric); 2071 if (ret < 0) { 2072 pr_err("target_fabric_configfs_register() for" 2073 " LIO-Target failed!\n"); 2074 target_fabric_configfs_free(fabric); 2075 return ret; 2076 } 2077 2078 lio_target_fabric_configfs = fabric; 2079 pr_debug("LIO_TARGET[0] - Set fabric ->" 2080 " lio_target_fabric_configfs\n"); 2081 return 0; 2082 } 2083 2084 2085 void iscsi_target_deregister_configfs(void) 2086 { 2087 if (!lio_target_fabric_configfs) 2088 return; 2089 /* 2090 * Shutdown discovery sessions and disable discovery TPG 2091 */ 2092 if (iscsit_global->discovery_tpg) 2093 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1); 2094 2095 target_fabric_configfs_deregister(lio_target_fabric_configfs); 2096 lio_target_fabric_configfs = NULL; 2097 pr_debug("LIO_TARGET[0] - Cleared" 2098 " lio_target_fabric_configfs\n"); 2099 } 2100