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 "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 "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 if (sess->sess_ops->InitiatorName) 673 rb += sprintf(page+rb, "InitiatorName: %s\n", 674 sess->sess_ops->InitiatorName); 675 if (sess->sess_ops->InitiatorAlias) 676 rb += sprintf(page+rb, "InitiatorAlias: %s\n", 677 sess->sess_ops->InitiatorAlias); 678 679 rb += sprintf(page+rb, "LIO Session ID: %u " 680 "ISID: 0x%02x %02x %02x %02x %02x %02x " 681 "TSIH: %hu ", sess->sid, 682 sess->isid[0], sess->isid[1], sess->isid[2], 683 sess->isid[3], sess->isid[4], sess->isid[5], 684 sess->tsih); 685 rb += sprintf(page+rb, "SessionType: %s\n", 686 (sess->sess_ops->SessionType) ? 687 "Discovery" : "Normal"); 688 rb += sprintf(page+rb, "Session State: "); 689 switch (sess->session_state) { 690 case TARG_SESS_STATE_FREE: 691 rb += sprintf(page+rb, "TARG_SESS_FREE\n"); 692 break; 693 case TARG_SESS_STATE_ACTIVE: 694 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n"); 695 break; 696 case TARG_SESS_STATE_LOGGED_IN: 697 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n"); 698 break; 699 case TARG_SESS_STATE_FAILED: 700 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n"); 701 break; 702 case TARG_SESS_STATE_IN_CONTINUE: 703 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n"); 704 break; 705 default: 706 rb += sprintf(page+rb, "ERROR: Unknown Session" 707 " State!\n"); 708 break; 709 } 710 711 rb += sprintf(page+rb, "---------------------[iSCSI Session" 712 " Values]-----------------------\n"); 713 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN" 714 " : MaxCmdSN : ITT : TTT\n"); 715 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x" 716 " 0x%08x 0x%08x\n", 717 sess->cmdsn_window, 718 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1, 719 sess->exp_cmd_sn, sess->max_cmd_sn, 720 sess->init_task_tag, sess->targ_xfer_tag); 721 rb += sprintf(page+rb, "----------------------[iSCSI" 722 " Connections]-------------------------\n"); 723 724 spin_lock(&sess->conn_lock); 725 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { 726 rb += sprintf(page+rb, "CID: %hu Connection" 727 " State: ", conn->cid); 728 switch (conn->conn_state) { 729 case TARG_CONN_STATE_FREE: 730 rb += sprintf(page+rb, 731 "TARG_CONN_STATE_FREE\n"); 732 break; 733 case TARG_CONN_STATE_XPT_UP: 734 rb += sprintf(page+rb, 735 "TARG_CONN_STATE_XPT_UP\n"); 736 break; 737 case TARG_CONN_STATE_IN_LOGIN: 738 rb += sprintf(page+rb, 739 "TARG_CONN_STATE_IN_LOGIN\n"); 740 break; 741 case TARG_CONN_STATE_LOGGED_IN: 742 rb += sprintf(page+rb, 743 "TARG_CONN_STATE_LOGGED_IN\n"); 744 break; 745 case TARG_CONN_STATE_IN_LOGOUT: 746 rb += sprintf(page+rb, 747 "TARG_CONN_STATE_IN_LOGOUT\n"); 748 break; 749 case TARG_CONN_STATE_LOGOUT_REQUESTED: 750 rb += sprintf(page+rb, 751 "TARG_CONN_STATE_LOGOUT_REQUESTED\n"); 752 break; 753 case TARG_CONN_STATE_CLEANUP_WAIT: 754 rb += sprintf(page+rb, 755 "TARG_CONN_STATE_CLEANUP_WAIT\n"); 756 break; 757 default: 758 rb += sprintf(page+rb, 759 "ERROR: Unknown Connection State!\n"); 760 break; 761 } 762 763 rb += sprintf(page+rb, " Address %s %s", conn->login_ip, 764 (conn->network_transport == ISCSI_TCP) ? 765 "TCP" : "SCTP"); 766 rb += sprintf(page+rb, " StatSN: 0x%08x\n", 767 conn->stat_sn); 768 } 769 spin_unlock(&sess->conn_lock); 770 } 771 spin_unlock_bh(&se_nacl->nacl_sess_lock); 772 773 return rb; 774 } 775 776 TF_NACL_BASE_ATTR_RO(lio_target, info); 777 778 static ssize_t lio_target_nacl_show_cmdsn_depth( 779 struct se_node_acl *se_nacl, 780 char *page) 781 { 782 return sprintf(page, "%u\n", se_nacl->queue_depth); 783 } 784 785 static ssize_t lio_target_nacl_store_cmdsn_depth( 786 struct se_node_acl *se_nacl, 787 const char *page, 788 size_t count) 789 { 790 struct se_portal_group *se_tpg = se_nacl->se_tpg; 791 struct iscsi_portal_group *tpg = container_of(se_tpg, 792 struct iscsi_portal_group, tpg_se_tpg); 793 struct config_item *acl_ci, *tpg_ci, *wwn_ci; 794 u32 cmdsn_depth = 0; 795 int ret; 796 797 ret = kstrtou32(page, 0, &cmdsn_depth); 798 if (ret) 799 return ret; 800 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 801 pr_err("Passed cmdsn_depth: %u exceeds" 802 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth, 803 TA_DEFAULT_CMDSN_DEPTH_MAX); 804 return -EINVAL; 805 } 806 acl_ci = &se_nacl->acl_group.cg_item; 807 if (!acl_ci) { 808 pr_err("Unable to locatel acl_ci\n"); 809 return -EINVAL; 810 } 811 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item; 812 if (!tpg_ci) { 813 pr_err("Unable to locate tpg_ci\n"); 814 return -EINVAL; 815 } 816 wwn_ci = &tpg_ci->ci_group->cg_item; 817 if (!wwn_ci) { 818 pr_err("Unable to locate config_item wwn_ci\n"); 819 return -EINVAL; 820 } 821 822 if (iscsit_get_tpg(tpg) < 0) 823 return -EINVAL; 824 /* 825 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1 826 */ 827 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg, 828 config_item_name(acl_ci), cmdsn_depth, 1); 829 830 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for" 831 "InitiatorName: %s\n", config_item_name(wwn_ci), 832 config_item_name(tpg_ci), cmdsn_depth, 833 config_item_name(acl_ci)); 834 835 iscsit_put_tpg(tpg); 836 return (!ret) ? count : (ssize_t)ret; 837 } 838 839 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR); 840 841 static ssize_t lio_target_nacl_show_tag( 842 struct se_node_acl *se_nacl, 843 char *page) 844 { 845 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag); 846 } 847 848 static ssize_t lio_target_nacl_store_tag( 849 struct se_node_acl *se_nacl, 850 const char *page, 851 size_t count) 852 { 853 int ret; 854 855 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page); 856 857 if (ret < 0) 858 return ret; 859 return count; 860 } 861 862 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR); 863 864 static struct configfs_attribute *lio_target_initiator_attrs[] = { 865 &lio_target_nacl_info.attr, 866 &lio_target_nacl_cmdsn_depth.attr, 867 &lio_target_nacl_tag.attr, 868 NULL, 869 }; 870 871 static struct se_node_acl *lio_tpg_alloc_fabric_acl( 872 struct se_portal_group *se_tpg) 873 { 874 struct iscsi_node_acl *acl; 875 876 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL); 877 if (!acl) { 878 pr_err("Unable to allocate memory for struct iscsi_node_acl\n"); 879 return NULL; 880 } 881 882 return &acl->se_node_acl; 883 } 884 885 static struct se_node_acl *lio_target_make_nodeacl( 886 struct se_portal_group *se_tpg, 887 struct config_group *group, 888 const char *name) 889 { 890 struct config_group *stats_cg; 891 struct iscsi_node_acl *acl; 892 struct se_node_acl *se_nacl_new, *se_nacl; 893 struct iscsi_portal_group *tpg = container_of(se_tpg, 894 struct iscsi_portal_group, tpg_se_tpg); 895 u32 cmdsn_depth; 896 897 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg); 898 if (!se_nacl_new) 899 return ERR_PTR(-ENOMEM); 900 901 cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth; 902 /* 903 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 904 * when converting a NdoeACL from demo mode -> explict 905 */ 906 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 907 name, cmdsn_depth); 908 if (IS_ERR(se_nacl)) 909 return se_nacl; 910 911 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl); 912 stats_cg = &se_nacl->acl_fabric_stat_group; 913 914 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 915 GFP_KERNEL); 916 if (!stats_cg->default_groups) { 917 pr_err("Unable to allocate memory for" 918 " stats_cg->default_groups\n"); 919 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1); 920 kfree(acl); 921 return ERR_PTR(-ENOMEM); 922 } 923 924 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group; 925 stats_cg->default_groups[1] = NULL; 926 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, 927 "iscsi_sess_stats", &iscsi_stat_sess_cit); 928 929 return se_nacl; 930 } 931 932 static void lio_target_drop_nodeacl( 933 struct se_node_acl *se_nacl) 934 { 935 struct se_portal_group *se_tpg = se_nacl->se_tpg; 936 struct iscsi_node_acl *acl = container_of(se_nacl, 937 struct iscsi_node_acl, se_node_acl); 938 struct config_item *df_item; 939 struct config_group *stats_cg; 940 int i; 941 942 stats_cg = &acl->se_node_acl.acl_fabric_stat_group; 943 for (i = 0; stats_cg->default_groups[i]; i++) { 944 df_item = &stats_cg->default_groups[i]->cg_item; 945 stats_cg->default_groups[i] = NULL; 946 config_item_put(df_item); 947 } 948 kfree(stats_cg->default_groups); 949 950 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1); 951 kfree(acl); 952 } 953 954 /* End items for lio_target_acl_cit */ 955 956 /* Start items for lio_target_tpg_attrib_cit */ 957 958 #define DEF_TPG_ATTRIB(name) \ 959 \ 960 static ssize_t iscsi_tpg_attrib_show_##name( \ 961 struct se_portal_group *se_tpg, \ 962 char *page) \ 963 { \ 964 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 965 struct iscsi_portal_group, tpg_se_tpg); \ 966 ssize_t rb; \ 967 \ 968 if (iscsit_get_tpg(tpg) < 0) \ 969 return -EINVAL; \ 970 \ 971 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 972 iscsit_put_tpg(tpg); \ 973 return rb; \ 974 } \ 975 \ 976 static ssize_t iscsi_tpg_attrib_store_##name( \ 977 struct se_portal_group *se_tpg, \ 978 const char *page, \ 979 size_t count) \ 980 { \ 981 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 982 struct iscsi_portal_group, tpg_se_tpg); \ 983 u32 val; \ 984 int ret; \ 985 \ 986 if (iscsit_get_tpg(tpg) < 0) \ 987 return -EINVAL; \ 988 \ 989 ret = kstrtou32(page, 0, &val); \ 990 if (ret) \ 991 goto out; \ 992 ret = iscsit_ta_##name(tpg, val); \ 993 if (ret < 0) \ 994 goto out; \ 995 \ 996 iscsit_put_tpg(tpg); \ 997 return count; \ 998 out: \ 999 iscsit_put_tpg(tpg); \ 1000 return ret; \ 1001 } 1002 1003 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode); 1004 1005 /* 1006 * Define iscsi_tpg_attrib_s_authentication 1007 */ 1008 DEF_TPG_ATTRIB(authentication); 1009 TPG_ATTR(authentication, S_IRUGO | S_IWUSR); 1010 /* 1011 * Define iscsi_tpg_attrib_s_login_timeout 1012 */ 1013 DEF_TPG_ATTRIB(login_timeout); 1014 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR); 1015 /* 1016 * Define iscsi_tpg_attrib_s_netif_timeout 1017 */ 1018 DEF_TPG_ATTRIB(netif_timeout); 1019 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR); 1020 /* 1021 * Define iscsi_tpg_attrib_s_generate_node_acls 1022 */ 1023 DEF_TPG_ATTRIB(generate_node_acls); 1024 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 1025 /* 1026 * Define iscsi_tpg_attrib_s_default_cmdsn_depth 1027 */ 1028 DEF_TPG_ATTRIB(default_cmdsn_depth); 1029 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR); 1030 /* 1031 Define iscsi_tpg_attrib_s_cache_dynamic_acls 1032 */ 1033 DEF_TPG_ATTRIB(cache_dynamic_acls); 1034 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 1035 /* 1036 * Define iscsi_tpg_attrib_s_demo_mode_write_protect 1037 */ 1038 DEF_TPG_ATTRIB(demo_mode_write_protect); 1039 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 1040 /* 1041 * Define iscsi_tpg_attrib_s_prod_mode_write_protect 1042 */ 1043 DEF_TPG_ATTRIB(prod_mode_write_protect); 1044 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 1045 /* 1046 * Define iscsi_tpg_attrib_s_demo_mode_discovery, 1047 */ 1048 DEF_TPG_ATTRIB(demo_mode_discovery); 1049 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR); 1050 /* 1051 * Define iscsi_tpg_attrib_s_default_erl 1052 */ 1053 DEF_TPG_ATTRIB(default_erl); 1054 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR); 1055 1056 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { 1057 &iscsi_tpg_attrib_authentication.attr, 1058 &iscsi_tpg_attrib_login_timeout.attr, 1059 &iscsi_tpg_attrib_netif_timeout.attr, 1060 &iscsi_tpg_attrib_generate_node_acls.attr, 1061 &iscsi_tpg_attrib_default_cmdsn_depth.attr, 1062 &iscsi_tpg_attrib_cache_dynamic_acls.attr, 1063 &iscsi_tpg_attrib_demo_mode_write_protect.attr, 1064 &iscsi_tpg_attrib_prod_mode_write_protect.attr, 1065 &iscsi_tpg_attrib_demo_mode_discovery.attr, 1066 &iscsi_tpg_attrib_default_erl.attr, 1067 NULL, 1068 }; 1069 1070 /* End items for lio_target_tpg_attrib_cit */ 1071 1072 /* Start items for lio_target_tpg_auth_cit */ 1073 1074 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \ 1075 static ssize_t __iscsi_##prefix##_show_##name( \ 1076 struct se_portal_group *se_tpg, \ 1077 char *page) \ 1078 { \ 1079 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1080 struct iscsi_portal_group, tpg_se_tpg); \ 1081 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1082 \ 1083 if (!capable(CAP_SYS_ADMIN)) \ 1084 return -EPERM; \ 1085 \ 1086 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 1087 } \ 1088 \ 1089 static ssize_t __iscsi_##prefix##_store_##name( \ 1090 struct se_portal_group *se_tpg, \ 1091 const char *page, \ 1092 size_t count) \ 1093 { \ 1094 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1095 struct iscsi_portal_group, tpg_se_tpg); \ 1096 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1097 \ 1098 if (!capable(CAP_SYS_ADMIN)) \ 1099 return -EPERM; \ 1100 \ 1101 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 1102 if (!(strncmp("NULL", auth->name, 4))) \ 1103 auth->naf_flags &= ~flags; \ 1104 else \ 1105 auth->naf_flags |= flags; \ 1106 \ 1107 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 1108 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 1109 auth->authenticate_target = 1; \ 1110 else \ 1111 auth->authenticate_target = 0; \ 1112 \ 1113 return count; \ 1114 } 1115 1116 #define __DEF_TPG_AUTH_INT(prefix, name) \ 1117 static ssize_t __iscsi_##prefix##_show_##name( \ 1118 struct se_portal_group *se_tpg, \ 1119 char *page) \ 1120 { \ 1121 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1122 struct iscsi_portal_group, tpg_se_tpg); \ 1123 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1124 \ 1125 if (!capable(CAP_SYS_ADMIN)) \ 1126 return -EPERM; \ 1127 \ 1128 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 1129 } 1130 1131 #define DEF_TPG_AUTH_STR(name, flags) \ 1132 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \ 1133 static ssize_t iscsi_tpg_auth_show_##name( \ 1134 struct se_portal_group *se_tpg, \ 1135 char *page) \ 1136 { \ 1137 return __iscsi_tpg_auth_show_##name(se_tpg, page); \ 1138 } \ 1139 \ 1140 static ssize_t iscsi_tpg_auth_store_##name( \ 1141 struct se_portal_group *se_tpg, \ 1142 const char *page, \ 1143 size_t count) \ 1144 { \ 1145 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \ 1146 } 1147 1148 #define DEF_TPG_AUTH_INT(name) \ 1149 __DEF_TPG_AUTH_INT(tpg_auth, name) \ 1150 static ssize_t iscsi_tpg_auth_show_##name( \ 1151 struct se_portal_group *se_tpg, \ 1152 char *page) \ 1153 { \ 1154 return __iscsi_tpg_auth_show_##name(se_tpg, page); \ 1155 } 1156 1157 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode); 1158 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name); 1159 1160 /* 1161 * * One-way authentication userid 1162 * */ 1163 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET); 1164 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 1165 /* 1166 * * One-way authentication password 1167 * */ 1168 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET); 1169 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR); 1170 /* 1171 * * Enforce mutual authentication 1172 * */ 1173 DEF_TPG_AUTH_INT(authenticate_target); 1174 TPG_AUTH_ATTR_RO(authenticate_target); 1175 /* 1176 * * Mutual authentication userid 1177 * */ 1178 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1179 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 1180 /* 1181 * * Mutual authentication password 1182 * */ 1183 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1184 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 1185 1186 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = { 1187 &iscsi_tpg_auth_userid.attr, 1188 &iscsi_tpg_auth_password.attr, 1189 &iscsi_tpg_auth_authenticate_target.attr, 1190 &iscsi_tpg_auth_userid_mutual.attr, 1191 &iscsi_tpg_auth_password_mutual.attr, 1192 NULL, 1193 }; 1194 1195 /* End items for lio_target_tpg_auth_cit */ 1196 1197 /* Start items for lio_target_tpg_param_cit */ 1198 1199 #define DEF_TPG_PARAM(name) \ 1200 static ssize_t iscsi_tpg_param_show_##name( \ 1201 struct se_portal_group *se_tpg, \ 1202 char *page) \ 1203 { \ 1204 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1205 struct iscsi_portal_group, tpg_se_tpg); \ 1206 struct iscsi_param *param; \ 1207 ssize_t rb; \ 1208 \ 1209 if (iscsit_get_tpg(tpg) < 0) \ 1210 return -EINVAL; \ 1211 \ 1212 param = iscsi_find_param_from_key(__stringify(name), \ 1213 tpg->param_list); \ 1214 if (!param) { \ 1215 iscsit_put_tpg(tpg); \ 1216 return -EINVAL; \ 1217 } \ 1218 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \ 1219 \ 1220 iscsit_put_tpg(tpg); \ 1221 return rb; \ 1222 } \ 1223 static ssize_t iscsi_tpg_param_store_##name( \ 1224 struct se_portal_group *se_tpg, \ 1225 const char *page, \ 1226 size_t count) \ 1227 { \ 1228 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1229 struct iscsi_portal_group, tpg_se_tpg); \ 1230 char *buf; \ 1231 int ret, len; \ 1232 \ 1233 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \ 1234 if (!buf) \ 1235 return -ENOMEM; \ 1236 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \ 1237 if (isspace(buf[len-1])) \ 1238 buf[len-1] = '\0'; /* Kill newline */ \ 1239 \ 1240 if (iscsit_get_tpg(tpg) < 0) { \ 1241 kfree(buf); \ 1242 return -EINVAL; \ 1243 } \ 1244 \ 1245 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \ 1246 if (ret < 0) \ 1247 goto out; \ 1248 \ 1249 kfree(buf); \ 1250 iscsit_put_tpg(tpg); \ 1251 return count; \ 1252 out: \ 1253 kfree(buf); \ 1254 iscsit_put_tpg(tpg); \ 1255 return -EINVAL; \ 1256 } 1257 1258 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode); 1259 1260 DEF_TPG_PARAM(AuthMethod); 1261 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR); 1262 1263 DEF_TPG_PARAM(HeaderDigest); 1264 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR); 1265 1266 DEF_TPG_PARAM(DataDigest); 1267 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR); 1268 1269 DEF_TPG_PARAM(MaxConnections); 1270 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR); 1271 1272 DEF_TPG_PARAM(TargetAlias); 1273 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR); 1274 1275 DEF_TPG_PARAM(InitialR2T); 1276 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR); 1277 1278 DEF_TPG_PARAM(ImmediateData); 1279 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR); 1280 1281 DEF_TPG_PARAM(MaxRecvDataSegmentLength); 1282 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR); 1283 1284 DEF_TPG_PARAM(MaxXmitDataSegmentLength); 1285 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR); 1286 1287 DEF_TPG_PARAM(MaxBurstLength); 1288 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR); 1289 1290 DEF_TPG_PARAM(FirstBurstLength); 1291 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR); 1292 1293 DEF_TPG_PARAM(DefaultTime2Wait); 1294 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR); 1295 1296 DEF_TPG_PARAM(DefaultTime2Retain); 1297 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR); 1298 1299 DEF_TPG_PARAM(MaxOutstandingR2T); 1300 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR); 1301 1302 DEF_TPG_PARAM(DataPDUInOrder); 1303 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR); 1304 1305 DEF_TPG_PARAM(DataSequenceInOrder); 1306 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR); 1307 1308 DEF_TPG_PARAM(ErrorRecoveryLevel); 1309 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR); 1310 1311 DEF_TPG_PARAM(IFMarker); 1312 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR); 1313 1314 DEF_TPG_PARAM(OFMarker); 1315 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR); 1316 1317 DEF_TPG_PARAM(IFMarkInt); 1318 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR); 1319 1320 DEF_TPG_PARAM(OFMarkInt); 1321 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR); 1322 1323 static struct configfs_attribute *lio_target_tpg_param_attrs[] = { 1324 &iscsi_tpg_param_AuthMethod.attr, 1325 &iscsi_tpg_param_HeaderDigest.attr, 1326 &iscsi_tpg_param_DataDigest.attr, 1327 &iscsi_tpg_param_MaxConnections.attr, 1328 &iscsi_tpg_param_TargetAlias.attr, 1329 &iscsi_tpg_param_InitialR2T.attr, 1330 &iscsi_tpg_param_ImmediateData.attr, 1331 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr, 1332 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr, 1333 &iscsi_tpg_param_MaxBurstLength.attr, 1334 &iscsi_tpg_param_FirstBurstLength.attr, 1335 &iscsi_tpg_param_DefaultTime2Wait.attr, 1336 &iscsi_tpg_param_DefaultTime2Retain.attr, 1337 &iscsi_tpg_param_MaxOutstandingR2T.attr, 1338 &iscsi_tpg_param_DataPDUInOrder.attr, 1339 &iscsi_tpg_param_DataSequenceInOrder.attr, 1340 &iscsi_tpg_param_ErrorRecoveryLevel.attr, 1341 &iscsi_tpg_param_IFMarker.attr, 1342 &iscsi_tpg_param_OFMarker.attr, 1343 &iscsi_tpg_param_IFMarkInt.attr, 1344 &iscsi_tpg_param_OFMarkInt.attr, 1345 NULL, 1346 }; 1347 1348 /* End items for lio_target_tpg_param_cit */ 1349 1350 /* Start items for lio_target_tpg_cit */ 1351 1352 static ssize_t lio_target_tpg_show_enable( 1353 struct se_portal_group *se_tpg, 1354 char *page) 1355 { 1356 struct iscsi_portal_group *tpg = container_of(se_tpg, 1357 struct iscsi_portal_group, tpg_se_tpg); 1358 ssize_t len; 1359 1360 spin_lock(&tpg->tpg_state_lock); 1361 len = sprintf(page, "%d\n", 1362 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0); 1363 spin_unlock(&tpg->tpg_state_lock); 1364 1365 return len; 1366 } 1367 1368 static ssize_t lio_target_tpg_store_enable( 1369 struct se_portal_group *se_tpg, 1370 const char *page, 1371 size_t count) 1372 { 1373 struct iscsi_portal_group *tpg = container_of(se_tpg, 1374 struct iscsi_portal_group, tpg_se_tpg); 1375 u32 op; 1376 int ret; 1377 1378 ret = kstrtou32(page, 0, &op); 1379 if (ret) 1380 return ret; 1381 if ((op != 1) && (op != 0)) { 1382 pr_err("Illegal value for tpg_enable: %u\n", op); 1383 return -EINVAL; 1384 } 1385 1386 ret = iscsit_get_tpg(tpg); 1387 if (ret < 0) 1388 return -EINVAL; 1389 1390 if (op) { 1391 ret = iscsit_tpg_enable_portal_group(tpg); 1392 if (ret < 0) 1393 goto out; 1394 } else { 1395 /* 1396 * iscsit_tpg_disable_portal_group() assumes force=1 1397 */ 1398 ret = iscsit_tpg_disable_portal_group(tpg, 1); 1399 if (ret < 0) 1400 goto out; 1401 } 1402 1403 iscsit_put_tpg(tpg); 1404 return count; 1405 out: 1406 iscsit_put_tpg(tpg); 1407 return -EINVAL; 1408 } 1409 1410 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR); 1411 1412 static struct configfs_attribute *lio_target_tpg_attrs[] = { 1413 &lio_target_tpg_enable.attr, 1414 NULL, 1415 }; 1416 1417 /* End items for lio_target_tpg_cit */ 1418 1419 /* Start items for lio_target_tiqn_cit */ 1420 1421 static struct se_portal_group *lio_target_tiqn_addtpg( 1422 struct se_wwn *wwn, 1423 struct config_group *group, 1424 const char *name) 1425 { 1426 struct iscsi_portal_group *tpg; 1427 struct iscsi_tiqn *tiqn; 1428 char *tpgt_str; 1429 int ret; 1430 u16 tpgt; 1431 1432 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1433 /* 1434 * Only tpgt_# directory groups can be created below 1435 * target/iscsi/iqn.superturodiskarry/ 1436 */ 1437 tpgt_str = strstr(name, "tpgt_"); 1438 if (!tpgt_str) { 1439 pr_err("Unable to locate \"tpgt_#\" directory" 1440 " group\n"); 1441 return NULL; 1442 } 1443 tpgt_str += 5; /* Skip ahead of "tpgt_" */ 1444 ret = kstrtou16(tpgt_str, 0, &tpgt); 1445 if (ret) 1446 return NULL; 1447 1448 tpg = iscsit_alloc_portal_group(tiqn, tpgt); 1449 if (!tpg) 1450 return NULL; 1451 1452 ret = core_tpg_register( 1453 &lio_target_fabric_configfs->tf_ops, 1454 wwn, &tpg->tpg_se_tpg, tpg, 1455 TRANSPORT_TPG_TYPE_NORMAL); 1456 if (ret < 0) 1457 return NULL; 1458 1459 ret = iscsit_tpg_add_portal_group(tiqn, tpg); 1460 if (ret != 0) 1461 goto out; 1462 1463 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1464 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n", 1465 name); 1466 return &tpg->tpg_se_tpg; 1467 out: 1468 core_tpg_deregister(&tpg->tpg_se_tpg); 1469 kfree(tpg); 1470 return NULL; 1471 } 1472 1473 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg) 1474 { 1475 struct iscsi_portal_group *tpg; 1476 struct iscsi_tiqn *tiqn; 1477 1478 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1479 tiqn = tpg->tpg_tiqn; 1480 /* 1481 * iscsit_tpg_del_portal_group() assumes force=1 1482 */ 1483 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n"); 1484 iscsit_tpg_del_portal_group(tiqn, tpg, 1); 1485 } 1486 1487 /* End items for lio_target_tiqn_cit */ 1488 1489 /* Start LIO-Target TIQN struct contig_item lio_target_cit */ 1490 1491 static ssize_t lio_target_wwn_show_attr_lio_version( 1492 struct target_fabric_configfs *tf, 1493 char *page) 1494 { 1495 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n"); 1496 } 1497 1498 TF_WWN_ATTR_RO(lio_target, lio_version); 1499 1500 static struct configfs_attribute *lio_target_wwn_attrs[] = { 1501 &lio_target_wwn_lio_version.attr, 1502 NULL, 1503 }; 1504 1505 static struct se_wwn *lio_target_call_coreaddtiqn( 1506 struct target_fabric_configfs *tf, 1507 struct config_group *group, 1508 const char *name) 1509 { 1510 struct config_group *stats_cg; 1511 struct iscsi_tiqn *tiqn; 1512 1513 tiqn = iscsit_add_tiqn((unsigned char *)name); 1514 if (IS_ERR(tiqn)) 1515 return ERR_CAST(tiqn); 1516 /* 1517 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group. 1518 */ 1519 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group; 1520 1521 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 1522 GFP_KERNEL); 1523 if (!stats_cg->default_groups) { 1524 pr_err("Unable to allocate memory for" 1525 " stats_cg->default_groups\n"); 1526 iscsit_del_tiqn(tiqn); 1527 return ERR_PTR(-ENOMEM); 1528 } 1529 1530 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group; 1531 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group; 1532 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group; 1533 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group; 1534 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group; 1535 stats_cg->default_groups[5] = NULL; 1536 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1537 "iscsi_instance", &iscsi_stat_instance_cit); 1538 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1539 "iscsi_sess_err", &iscsi_stat_sess_err_cit); 1540 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1541 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); 1542 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1543 "iscsi_login_stats", &iscsi_stat_login_cit); 1544 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1545 "iscsi_logout_stats", &iscsi_stat_logout_cit); 1546 1547 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1548 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:" 1549 " %s\n", name); 1550 return &tiqn->tiqn_wwn; 1551 } 1552 1553 static void lio_target_call_coredeltiqn( 1554 struct se_wwn *wwn) 1555 { 1556 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1557 struct config_item *df_item; 1558 struct config_group *stats_cg; 1559 int i; 1560 1561 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group; 1562 for (i = 0; stats_cg->default_groups[i]; i++) { 1563 df_item = &stats_cg->default_groups[i]->cg_item; 1564 stats_cg->default_groups[i] = NULL; 1565 config_item_put(df_item); 1566 } 1567 kfree(stats_cg->default_groups); 1568 1569 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n", 1570 tiqn->tiqn); 1571 iscsit_del_tiqn(tiqn); 1572 } 1573 1574 /* End LIO-Target TIQN struct contig_lio_target_cit */ 1575 1576 /* Start lio_target_discovery_auth_cit */ 1577 1578 #define DEF_DISC_AUTH_STR(name, flags) \ 1579 __DEF_NACL_AUTH_STR(disc, name, flags) \ 1580 static ssize_t iscsi_disc_show_##name( \ 1581 struct target_fabric_configfs *tf, \ 1582 char *page) \ 1583 { \ 1584 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \ 1585 page); \ 1586 } \ 1587 static ssize_t iscsi_disc_store_##name( \ 1588 struct target_fabric_configfs *tf, \ 1589 const char *page, \ 1590 size_t count) \ 1591 { \ 1592 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \ 1593 page, count); \ 1594 } 1595 1596 #define DEF_DISC_AUTH_INT(name) \ 1597 __DEF_NACL_AUTH_INT(disc, name) \ 1598 static ssize_t iscsi_disc_show_##name( \ 1599 struct target_fabric_configfs *tf, \ 1600 char *page) \ 1601 { \ 1602 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \ 1603 page); \ 1604 } 1605 1606 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode) 1607 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name) 1608 1609 /* 1610 * One-way authentication userid 1611 */ 1612 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET); 1613 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 1614 /* 1615 * One-way authentication password 1616 */ 1617 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET); 1618 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR); 1619 /* 1620 * Enforce mutual authentication 1621 */ 1622 DEF_DISC_AUTH_INT(authenticate_target); 1623 DISC_AUTH_ATTR_RO(authenticate_target); 1624 /* 1625 * Mutual authentication userid 1626 */ 1627 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1628 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 1629 /* 1630 * Mutual authentication password 1631 */ 1632 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1633 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 1634 1635 /* 1636 * enforce_discovery_auth 1637 */ 1638 static ssize_t iscsi_disc_show_enforce_discovery_auth( 1639 struct target_fabric_configfs *tf, 1640 char *page) 1641 { 1642 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth; 1643 1644 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth); 1645 } 1646 1647 static ssize_t iscsi_disc_store_enforce_discovery_auth( 1648 struct target_fabric_configfs *tf, 1649 const char *page, 1650 size_t count) 1651 { 1652 struct iscsi_param *param; 1653 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg; 1654 u32 op; 1655 int err; 1656 1657 err = kstrtou32(page, 0, &op); 1658 if (err) 1659 return -EINVAL; 1660 if ((op != 1) && (op != 0)) { 1661 pr_err("Illegal value for enforce_discovery_auth:" 1662 " %u\n", op); 1663 return -EINVAL; 1664 } 1665 1666 if (!discovery_tpg) { 1667 pr_err("iscsit_global->discovery_tpg is NULL\n"); 1668 return -EINVAL; 1669 } 1670 1671 param = iscsi_find_param_from_key(AUTHMETHOD, 1672 discovery_tpg->param_list); 1673 if (!param) 1674 return -EINVAL; 1675 1676 if (op) { 1677 /* 1678 * Reset the AuthMethod key to CHAP. 1679 */ 1680 if (iscsi_update_param_value(param, CHAP) < 0) 1681 return -EINVAL; 1682 1683 discovery_tpg->tpg_attrib.authentication = 1; 1684 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1; 1685 pr_debug("LIO-CORE[0] Successfully enabled" 1686 " authentication enforcement for iSCSI" 1687 " Discovery TPG\n"); 1688 } else { 1689 /* 1690 * Reset the AuthMethod key to CHAP,None 1691 */ 1692 if (iscsi_update_param_value(param, "CHAP,None") < 0) 1693 return -EINVAL; 1694 1695 discovery_tpg->tpg_attrib.authentication = 0; 1696 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0; 1697 pr_debug("LIO-CORE[0] Successfully disabled" 1698 " authentication enforcement for iSCSI" 1699 " Discovery TPG\n"); 1700 } 1701 1702 return count; 1703 } 1704 1705 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR); 1706 1707 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { 1708 &iscsi_disc_userid.attr, 1709 &iscsi_disc_password.attr, 1710 &iscsi_disc_authenticate_target.attr, 1711 &iscsi_disc_userid_mutual.attr, 1712 &iscsi_disc_password_mutual.attr, 1713 &iscsi_disc_enforce_discovery_auth.attr, 1714 NULL, 1715 }; 1716 1717 /* End lio_target_discovery_auth_cit */ 1718 1719 /* Start functions for target_core_fabric_ops */ 1720 1721 static char *iscsi_get_fabric_name(void) 1722 { 1723 return "iSCSI"; 1724 } 1725 1726 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd) 1727 { 1728 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1729 1730 /* only used for printks or comparism with ->ref_task_tag */ 1731 return (__force u32)cmd->init_task_tag; 1732 } 1733 1734 static int iscsi_get_cmd_state(struct se_cmd *se_cmd) 1735 { 1736 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1737 1738 return cmd->i_state; 1739 } 1740 1741 static u32 lio_sess_get_index(struct se_session *se_sess) 1742 { 1743 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1744 1745 return sess->session_index; 1746 } 1747 1748 static u32 lio_sess_get_initiator_sid( 1749 struct se_session *se_sess, 1750 unsigned char *buf, 1751 u32 size) 1752 { 1753 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1754 /* 1755 * iSCSI Initiator Session Identifier from RFC-3720. 1756 */ 1757 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x", 1758 sess->isid[0], sess->isid[1], sess->isid[2], 1759 sess->isid[3], sess->isid[4], sess->isid[5]); 1760 } 1761 1762 static int lio_queue_data_in(struct se_cmd *se_cmd) 1763 { 1764 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1765 1766 cmd->i_state = ISTATE_SEND_DATAIN; 1767 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd); 1768 1769 return 0; 1770 } 1771 1772 static int lio_write_pending(struct se_cmd *se_cmd) 1773 { 1774 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1775 struct iscsi_conn *conn = cmd->conn; 1776 1777 if (!cmd->immediate_data && !cmd->unsolicited_data) 1778 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false); 1779 1780 return 0; 1781 } 1782 1783 static int lio_write_pending_status(struct se_cmd *se_cmd) 1784 { 1785 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1786 int ret; 1787 1788 spin_lock_bh(&cmd->istate_lock); 1789 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT); 1790 spin_unlock_bh(&cmd->istate_lock); 1791 1792 return ret; 1793 } 1794 1795 static int lio_queue_status(struct se_cmd *se_cmd) 1796 { 1797 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1798 1799 cmd->i_state = ISTATE_SEND_STATUS; 1800 1801 if (cmd->se_cmd.scsi_status || cmd->sense_reason) { 1802 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1803 return 0; 1804 } 1805 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd); 1806 1807 return 0; 1808 } 1809 1810 static void lio_queue_tm_rsp(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_TASKMGTRSP; 1815 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1816 } 1817 1818 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) 1819 { 1820 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1821 1822 return &tpg->tpg_tiqn->tiqn[0]; 1823 } 1824 1825 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg) 1826 { 1827 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1828 1829 return tpg->tpgt; 1830 } 1831 1832 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) 1833 { 1834 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1835 1836 return tpg->tpg_attrib.default_cmdsn_depth; 1837 } 1838 1839 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) 1840 { 1841 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1842 1843 return tpg->tpg_attrib.generate_node_acls; 1844 } 1845 1846 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) 1847 { 1848 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1849 1850 return tpg->tpg_attrib.cache_dynamic_acls; 1851 } 1852 1853 static int lio_tpg_check_demo_mode_write_protect( 1854 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.demo_mode_write_protect; 1859 } 1860 1861 static int lio_tpg_check_prod_mode_write_protect( 1862 struct se_portal_group *se_tpg) 1863 { 1864 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1865 1866 return tpg->tpg_attrib.prod_mode_write_protect; 1867 } 1868 1869 static void lio_tpg_release_fabric_acl( 1870 struct se_portal_group *se_tpg, 1871 struct se_node_acl *se_acl) 1872 { 1873 struct iscsi_node_acl *acl = container_of(se_acl, 1874 struct iscsi_node_acl, se_node_acl); 1875 kfree(acl); 1876 } 1877 1878 /* 1879 * Called with spin_lock_bh(struct se_portal_group->session_lock) held.. 1880 * 1881 * Also, this function calls iscsit_inc_session_usage_count() on the 1882 * struct iscsi_session in question. 1883 */ 1884 static int lio_tpg_shutdown_session(struct se_session *se_sess) 1885 { 1886 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1887 1888 spin_lock(&sess->conn_lock); 1889 if (atomic_read(&sess->session_fall_back_to_erl0) || 1890 atomic_read(&sess->session_logout) || 1891 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) { 1892 spin_unlock(&sess->conn_lock); 1893 return 0; 1894 } 1895 atomic_set(&sess->session_reinstatement, 1); 1896 spin_unlock(&sess->conn_lock); 1897 1898 iscsit_stop_time2retain_timer(sess); 1899 iscsit_stop_session(sess, 1, 1); 1900 1901 return 1; 1902 } 1903 1904 /* 1905 * Calls iscsit_dec_session_usage_count() as inverse of 1906 * lio_tpg_shutdown_session() 1907 */ 1908 static void lio_tpg_close_session(struct se_session *se_sess) 1909 { 1910 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1911 /* 1912 * If the iSCSI Session for the iSCSI Initiator Node exists, 1913 * forcefully shutdown the iSCSI NEXUS. 1914 */ 1915 iscsit_close_session(sess); 1916 } 1917 1918 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg) 1919 { 1920 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1921 1922 return tpg->tpg_tiqn->tiqn_index; 1923 } 1924 1925 static void lio_set_default_node_attributes(struct se_node_acl *se_acl) 1926 { 1927 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl, 1928 se_node_acl); 1929 struct se_portal_group *se_tpg = se_acl->se_tpg; 1930 struct iscsi_portal_group *tpg = container_of(se_tpg, 1931 struct iscsi_portal_group, tpg_se_tpg); 1932 1933 acl->node_attrib.nacl = acl; 1934 iscsit_set_default_node_attribues(acl, tpg); 1935 } 1936 1937 static int lio_check_stop_free(struct se_cmd *se_cmd) 1938 { 1939 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 1940 } 1941 1942 static void lio_release_cmd(struct se_cmd *se_cmd) 1943 { 1944 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1945 1946 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); 1947 iscsit_release_cmd(cmd); 1948 } 1949 1950 /* End functions for target_core_fabric_ops */ 1951 1952 int iscsi_target_register_configfs(void) 1953 { 1954 struct target_fabric_configfs *fabric; 1955 int ret; 1956 1957 lio_target_fabric_configfs = NULL; 1958 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi"); 1959 if (IS_ERR(fabric)) { 1960 pr_err("target_fabric_configfs_init() for" 1961 " LIO-Target failed!\n"); 1962 return PTR_ERR(fabric); 1963 } 1964 /* 1965 * Setup the fabric API of function pointers used by target_core_mod.. 1966 */ 1967 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name; 1968 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident; 1969 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn; 1970 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag; 1971 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth; 1972 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id; 1973 fabric->tf_ops.tpg_get_pr_transport_id_len = 1974 &iscsi_get_pr_transport_id_len; 1975 fabric->tf_ops.tpg_parse_pr_out_transport_id = 1976 &iscsi_parse_pr_out_transport_id; 1977 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode; 1978 fabric->tf_ops.tpg_check_demo_mode_cache = 1979 &lio_tpg_check_demo_mode_cache; 1980 fabric->tf_ops.tpg_check_demo_mode_write_protect = 1981 &lio_tpg_check_demo_mode_write_protect; 1982 fabric->tf_ops.tpg_check_prod_mode_write_protect = 1983 &lio_tpg_check_prod_mode_write_protect; 1984 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl; 1985 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl; 1986 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index; 1987 fabric->tf_ops.check_stop_free = &lio_check_stop_free, 1988 fabric->tf_ops.release_cmd = &lio_release_cmd; 1989 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session; 1990 fabric->tf_ops.close_session = &lio_tpg_close_session; 1991 fabric->tf_ops.sess_get_index = &lio_sess_get_index; 1992 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid; 1993 fabric->tf_ops.write_pending = &lio_write_pending; 1994 fabric->tf_ops.write_pending_status = &lio_write_pending_status; 1995 fabric->tf_ops.set_default_node_attributes = 1996 &lio_set_default_node_attributes; 1997 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag; 1998 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state; 1999 fabric->tf_ops.queue_data_in = &lio_queue_data_in; 2000 fabric->tf_ops.queue_status = &lio_queue_status; 2001 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp; 2002 /* 2003 * Setup function pointers for generic logic in target_core_fabric_configfs.c 2004 */ 2005 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn; 2006 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn; 2007 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg; 2008 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg; 2009 fabric->tf_ops.fabric_post_link = NULL; 2010 fabric->tf_ops.fabric_pre_unlink = NULL; 2011 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg; 2012 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg; 2013 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl; 2014 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl; 2015 /* 2016 * Setup default attribute lists for various fabric->tf_cit_tmpl 2017 * sturct config_item_type's 2018 */ 2019 fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs; 2020 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs; 2021 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs; 2022 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs; 2023 fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs; 2024 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs; 2025 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs; 2026 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs; 2027 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs; 2028 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs; 2029 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs; 2030 2031 ret = target_fabric_configfs_register(fabric); 2032 if (ret < 0) { 2033 pr_err("target_fabric_configfs_register() for" 2034 " LIO-Target failed!\n"); 2035 target_fabric_configfs_free(fabric); 2036 return ret; 2037 } 2038 2039 lio_target_fabric_configfs = fabric; 2040 pr_debug("LIO_TARGET[0] - Set fabric ->" 2041 " lio_target_fabric_configfs\n"); 2042 return 0; 2043 } 2044 2045 2046 void iscsi_target_deregister_configfs(void) 2047 { 2048 if (!lio_target_fabric_configfs) 2049 return; 2050 /* 2051 * Shutdown discovery sessions and disable discovery TPG 2052 */ 2053 if (iscsit_global->discovery_tpg) 2054 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1); 2055 2056 target_fabric_configfs_deregister(lio_target_fabric_configfs); 2057 lio_target_fabric_configfs = NULL; 2058 pr_debug("LIO_TARGET[0] - Cleared" 2059 " lio_target_fabric_configfs\n"); 2060 } 2061