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 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, "LIO Session ID: %u " 678 "ISID: 0x%02x %02x %02x %02x %02x %02x " 679 "TSIH: %hu ", sess->sid, 680 sess->isid[0], sess->isid[1], sess->isid[2], 681 sess->isid[3], sess->isid[4], sess->isid[5], 682 sess->tsih); 683 rb += sprintf(page+rb, "SessionType: %s\n", 684 (sess->sess_ops->SessionType) ? 685 "Discovery" : "Normal"); 686 rb += sprintf(page+rb, "Session State: "); 687 switch (sess->session_state) { 688 case TARG_SESS_STATE_FREE: 689 rb += sprintf(page+rb, "TARG_SESS_FREE\n"); 690 break; 691 case TARG_SESS_STATE_ACTIVE: 692 rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n"); 693 break; 694 case TARG_SESS_STATE_LOGGED_IN: 695 rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n"); 696 break; 697 case TARG_SESS_STATE_FAILED: 698 rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n"); 699 break; 700 case TARG_SESS_STATE_IN_CONTINUE: 701 rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n"); 702 break; 703 default: 704 rb += sprintf(page+rb, "ERROR: Unknown Session" 705 " State!\n"); 706 break; 707 } 708 709 rb += sprintf(page+rb, "---------------------[iSCSI Session" 710 " Values]-----------------------\n"); 711 rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN" 712 " : MaxCmdSN : ITT : TTT\n"); 713 rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x" 714 " 0x%08x 0x%08x\n", 715 sess->cmdsn_window, 716 (sess->max_cmd_sn - sess->exp_cmd_sn) + 1, 717 sess->exp_cmd_sn, sess->max_cmd_sn, 718 sess->init_task_tag, sess->targ_xfer_tag); 719 rb += sprintf(page+rb, "----------------------[iSCSI" 720 " Connections]-------------------------\n"); 721 722 spin_lock(&sess->conn_lock); 723 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { 724 rb += sprintf(page+rb, "CID: %hu Connection" 725 " State: ", conn->cid); 726 switch (conn->conn_state) { 727 case TARG_CONN_STATE_FREE: 728 rb += sprintf(page+rb, 729 "TARG_CONN_STATE_FREE\n"); 730 break; 731 case TARG_CONN_STATE_XPT_UP: 732 rb += sprintf(page+rb, 733 "TARG_CONN_STATE_XPT_UP\n"); 734 break; 735 case TARG_CONN_STATE_IN_LOGIN: 736 rb += sprintf(page+rb, 737 "TARG_CONN_STATE_IN_LOGIN\n"); 738 break; 739 case TARG_CONN_STATE_LOGGED_IN: 740 rb += sprintf(page+rb, 741 "TARG_CONN_STATE_LOGGED_IN\n"); 742 break; 743 case TARG_CONN_STATE_IN_LOGOUT: 744 rb += sprintf(page+rb, 745 "TARG_CONN_STATE_IN_LOGOUT\n"); 746 break; 747 case TARG_CONN_STATE_LOGOUT_REQUESTED: 748 rb += sprintf(page+rb, 749 "TARG_CONN_STATE_LOGOUT_REQUESTED\n"); 750 break; 751 case TARG_CONN_STATE_CLEANUP_WAIT: 752 rb += sprintf(page+rb, 753 "TARG_CONN_STATE_CLEANUP_WAIT\n"); 754 break; 755 default: 756 rb += sprintf(page+rb, 757 "ERROR: Unknown Connection State!\n"); 758 break; 759 } 760 761 rb += sprintf(page+rb, " Address %s %s", conn->login_ip, 762 (conn->network_transport == ISCSI_TCP) ? 763 "TCP" : "SCTP"); 764 rb += sprintf(page+rb, " StatSN: 0x%08x\n", 765 conn->stat_sn); 766 } 767 spin_unlock(&sess->conn_lock); 768 } 769 spin_unlock_bh(&se_nacl->nacl_sess_lock); 770 771 return rb; 772 } 773 774 TF_NACL_BASE_ATTR_RO(lio_target, info); 775 776 static ssize_t lio_target_nacl_show_cmdsn_depth( 777 struct se_node_acl *se_nacl, 778 char *page) 779 { 780 return sprintf(page, "%u\n", se_nacl->queue_depth); 781 } 782 783 static ssize_t lio_target_nacl_store_cmdsn_depth( 784 struct se_node_acl *se_nacl, 785 const char *page, 786 size_t count) 787 { 788 struct se_portal_group *se_tpg = se_nacl->se_tpg; 789 struct iscsi_portal_group *tpg = container_of(se_tpg, 790 struct iscsi_portal_group, tpg_se_tpg); 791 struct config_item *acl_ci, *tpg_ci, *wwn_ci; 792 u32 cmdsn_depth = 0; 793 int ret; 794 795 ret = kstrtou32(page, 0, &cmdsn_depth); 796 if (ret) 797 return ret; 798 if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 799 pr_err("Passed cmdsn_depth: %u exceeds" 800 " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth, 801 TA_DEFAULT_CMDSN_DEPTH_MAX); 802 return -EINVAL; 803 } 804 acl_ci = &se_nacl->acl_group.cg_item; 805 if (!acl_ci) { 806 pr_err("Unable to locatel acl_ci\n"); 807 return -EINVAL; 808 } 809 tpg_ci = &acl_ci->ci_parent->ci_group->cg_item; 810 if (!tpg_ci) { 811 pr_err("Unable to locate tpg_ci\n"); 812 return -EINVAL; 813 } 814 wwn_ci = &tpg_ci->ci_group->cg_item; 815 if (!wwn_ci) { 816 pr_err("Unable to locate config_item wwn_ci\n"); 817 return -EINVAL; 818 } 819 820 if (iscsit_get_tpg(tpg) < 0) 821 return -EINVAL; 822 /* 823 * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1 824 */ 825 ret = iscsit_tpg_set_initiator_node_queue_depth(tpg, 826 config_item_name(acl_ci), cmdsn_depth, 1); 827 828 pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for" 829 "InitiatorName: %s\n", config_item_name(wwn_ci), 830 config_item_name(tpg_ci), cmdsn_depth, 831 config_item_name(acl_ci)); 832 833 iscsit_put_tpg(tpg); 834 return (!ret) ? count : (ssize_t)ret; 835 } 836 837 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR); 838 839 static ssize_t lio_target_nacl_show_tag( 840 struct se_node_acl *se_nacl, 841 char *page) 842 { 843 return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag); 844 } 845 846 static ssize_t lio_target_nacl_store_tag( 847 struct se_node_acl *se_nacl, 848 const char *page, 849 size_t count) 850 { 851 int ret; 852 853 ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page); 854 855 if (ret < 0) 856 return ret; 857 return count; 858 } 859 860 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR); 861 862 static struct configfs_attribute *lio_target_initiator_attrs[] = { 863 &lio_target_nacl_info.attr, 864 &lio_target_nacl_cmdsn_depth.attr, 865 &lio_target_nacl_tag.attr, 866 NULL, 867 }; 868 869 static struct se_node_acl *lio_tpg_alloc_fabric_acl( 870 struct se_portal_group *se_tpg) 871 { 872 struct iscsi_node_acl *acl; 873 874 acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL); 875 if (!acl) { 876 pr_err("Unable to allocate memory for struct iscsi_node_acl\n"); 877 return NULL; 878 } 879 880 return &acl->se_node_acl; 881 } 882 883 static struct se_node_acl *lio_target_make_nodeacl( 884 struct se_portal_group *se_tpg, 885 struct config_group *group, 886 const char *name) 887 { 888 struct config_group *stats_cg; 889 struct iscsi_node_acl *acl; 890 struct se_node_acl *se_nacl_new, *se_nacl; 891 struct iscsi_portal_group *tpg = container_of(se_tpg, 892 struct iscsi_portal_group, tpg_se_tpg); 893 u32 cmdsn_depth; 894 895 se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg); 896 if (!se_nacl_new) 897 return ERR_PTR(-ENOMEM); 898 899 cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth; 900 /* 901 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 902 * when converting a NdoeACL from demo mode -> explict 903 */ 904 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 905 name, cmdsn_depth); 906 if (IS_ERR(se_nacl)) 907 return se_nacl; 908 909 acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl); 910 stats_cg = &se_nacl->acl_fabric_stat_group; 911 912 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 913 GFP_KERNEL); 914 if (!stats_cg->default_groups) { 915 pr_err("Unable to allocate memory for" 916 " stats_cg->default_groups\n"); 917 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1); 918 kfree(acl); 919 return ERR_PTR(-ENOMEM); 920 } 921 922 stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group; 923 stats_cg->default_groups[1] = NULL; 924 config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group, 925 "iscsi_sess_stats", &iscsi_stat_sess_cit); 926 927 return se_nacl; 928 } 929 930 static void lio_target_drop_nodeacl( 931 struct se_node_acl *se_nacl) 932 { 933 struct se_portal_group *se_tpg = se_nacl->se_tpg; 934 struct iscsi_node_acl *acl = container_of(se_nacl, 935 struct iscsi_node_acl, se_node_acl); 936 struct config_item *df_item; 937 struct config_group *stats_cg; 938 int i; 939 940 stats_cg = &acl->se_node_acl.acl_fabric_stat_group; 941 for (i = 0; stats_cg->default_groups[i]; i++) { 942 df_item = &stats_cg->default_groups[i]->cg_item; 943 stats_cg->default_groups[i] = NULL; 944 config_item_put(df_item); 945 } 946 kfree(stats_cg->default_groups); 947 948 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1); 949 kfree(acl); 950 } 951 952 /* End items for lio_target_acl_cit */ 953 954 /* Start items for lio_target_tpg_attrib_cit */ 955 956 #define DEF_TPG_ATTRIB(name) \ 957 \ 958 static ssize_t iscsi_tpg_attrib_show_##name( \ 959 struct se_portal_group *se_tpg, \ 960 char *page) \ 961 { \ 962 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 963 struct iscsi_portal_group, tpg_se_tpg); \ 964 ssize_t rb; \ 965 \ 966 if (iscsit_get_tpg(tpg) < 0) \ 967 return -EINVAL; \ 968 \ 969 rb = sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 970 iscsit_put_tpg(tpg); \ 971 return rb; \ 972 } \ 973 \ 974 static ssize_t iscsi_tpg_attrib_store_##name( \ 975 struct se_portal_group *se_tpg, \ 976 const char *page, \ 977 size_t count) \ 978 { \ 979 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 980 struct iscsi_portal_group, tpg_se_tpg); \ 981 u32 val; \ 982 int ret; \ 983 \ 984 if (iscsit_get_tpg(tpg) < 0) \ 985 return -EINVAL; \ 986 \ 987 ret = kstrtou32(page, 0, &val); \ 988 if (ret) \ 989 goto out; \ 990 ret = iscsit_ta_##name(tpg, val); \ 991 if (ret < 0) \ 992 goto out; \ 993 \ 994 iscsit_put_tpg(tpg); \ 995 return count; \ 996 out: \ 997 iscsit_put_tpg(tpg); \ 998 return ret; \ 999 } 1000 1001 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode); 1002 1003 /* 1004 * Define iscsi_tpg_attrib_s_authentication 1005 */ 1006 DEF_TPG_ATTRIB(authentication); 1007 TPG_ATTR(authentication, S_IRUGO | S_IWUSR); 1008 /* 1009 * Define iscsi_tpg_attrib_s_login_timeout 1010 */ 1011 DEF_TPG_ATTRIB(login_timeout); 1012 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR); 1013 /* 1014 * Define iscsi_tpg_attrib_s_netif_timeout 1015 */ 1016 DEF_TPG_ATTRIB(netif_timeout); 1017 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR); 1018 /* 1019 * Define iscsi_tpg_attrib_s_generate_node_acls 1020 */ 1021 DEF_TPG_ATTRIB(generate_node_acls); 1022 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 1023 /* 1024 * Define iscsi_tpg_attrib_s_default_cmdsn_depth 1025 */ 1026 DEF_TPG_ATTRIB(default_cmdsn_depth); 1027 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR); 1028 /* 1029 Define iscsi_tpg_attrib_s_cache_dynamic_acls 1030 */ 1031 DEF_TPG_ATTRIB(cache_dynamic_acls); 1032 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 1033 /* 1034 * Define iscsi_tpg_attrib_s_demo_mode_write_protect 1035 */ 1036 DEF_TPG_ATTRIB(demo_mode_write_protect); 1037 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 1038 /* 1039 * Define iscsi_tpg_attrib_s_prod_mode_write_protect 1040 */ 1041 DEF_TPG_ATTRIB(prod_mode_write_protect); 1042 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 1043 /* 1044 * Define iscsi_tpg_attrib_s_demo_mode_discovery, 1045 */ 1046 DEF_TPG_ATTRIB(demo_mode_discovery); 1047 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR); 1048 /* 1049 * Define iscsi_tpg_attrib_s_default_erl 1050 */ 1051 DEF_TPG_ATTRIB(default_erl); 1052 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR); 1053 /* 1054 * Define iscsi_tpg_attrib_s_t10_pi 1055 */ 1056 DEF_TPG_ATTRIB(t10_pi); 1057 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR); 1058 1059 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = { 1060 &iscsi_tpg_attrib_authentication.attr, 1061 &iscsi_tpg_attrib_login_timeout.attr, 1062 &iscsi_tpg_attrib_netif_timeout.attr, 1063 &iscsi_tpg_attrib_generate_node_acls.attr, 1064 &iscsi_tpg_attrib_default_cmdsn_depth.attr, 1065 &iscsi_tpg_attrib_cache_dynamic_acls.attr, 1066 &iscsi_tpg_attrib_demo_mode_write_protect.attr, 1067 &iscsi_tpg_attrib_prod_mode_write_protect.attr, 1068 &iscsi_tpg_attrib_demo_mode_discovery.attr, 1069 &iscsi_tpg_attrib_default_erl.attr, 1070 &iscsi_tpg_attrib_t10_pi.attr, 1071 NULL, 1072 }; 1073 1074 /* End items for lio_target_tpg_attrib_cit */ 1075 1076 /* Start items for lio_target_tpg_auth_cit */ 1077 1078 #define __DEF_TPG_AUTH_STR(prefix, name, flags) \ 1079 static ssize_t __iscsi_##prefix##_show_##name( \ 1080 struct se_portal_group *se_tpg, \ 1081 char *page) \ 1082 { \ 1083 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1084 struct iscsi_portal_group, tpg_se_tpg); \ 1085 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1086 \ 1087 if (!capable(CAP_SYS_ADMIN)) \ 1088 return -EPERM; \ 1089 \ 1090 return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \ 1091 } \ 1092 \ 1093 static ssize_t __iscsi_##prefix##_store_##name( \ 1094 struct se_portal_group *se_tpg, \ 1095 const char *page, \ 1096 size_t count) \ 1097 { \ 1098 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1099 struct iscsi_portal_group, tpg_se_tpg); \ 1100 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1101 \ 1102 if (!capable(CAP_SYS_ADMIN)) \ 1103 return -EPERM; \ 1104 \ 1105 snprintf(auth->name, sizeof(auth->name), "%s", page); \ 1106 if (!(strncmp("NULL", auth->name, 4))) \ 1107 auth->naf_flags &= ~flags; \ 1108 else \ 1109 auth->naf_flags |= flags; \ 1110 \ 1111 if ((auth->naf_flags & NAF_USERID_IN_SET) && \ 1112 (auth->naf_flags & NAF_PASSWORD_IN_SET)) \ 1113 auth->authenticate_target = 1; \ 1114 else \ 1115 auth->authenticate_target = 0; \ 1116 \ 1117 return count; \ 1118 } 1119 1120 #define __DEF_TPG_AUTH_INT(prefix, name) \ 1121 static ssize_t __iscsi_##prefix##_show_##name( \ 1122 struct se_portal_group *se_tpg, \ 1123 char *page) \ 1124 { \ 1125 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1126 struct iscsi_portal_group, tpg_se_tpg); \ 1127 struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \ 1128 \ 1129 if (!capable(CAP_SYS_ADMIN)) \ 1130 return -EPERM; \ 1131 \ 1132 return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \ 1133 } 1134 1135 #define DEF_TPG_AUTH_STR(name, flags) \ 1136 __DEF_TPG_AUTH_STR(tpg_auth, name, flags) \ 1137 static ssize_t iscsi_tpg_auth_show_##name( \ 1138 struct se_portal_group *se_tpg, \ 1139 char *page) \ 1140 { \ 1141 return __iscsi_tpg_auth_show_##name(se_tpg, page); \ 1142 } \ 1143 \ 1144 static ssize_t iscsi_tpg_auth_store_##name( \ 1145 struct se_portal_group *se_tpg, \ 1146 const char *page, \ 1147 size_t count) \ 1148 { \ 1149 return __iscsi_tpg_auth_store_##name(se_tpg, page, count); \ 1150 } 1151 1152 #define DEF_TPG_AUTH_INT(name) \ 1153 __DEF_TPG_AUTH_INT(tpg_auth, name) \ 1154 static ssize_t iscsi_tpg_auth_show_##name( \ 1155 struct se_portal_group *se_tpg, \ 1156 char *page) \ 1157 { \ 1158 return __iscsi_tpg_auth_show_##name(se_tpg, page); \ 1159 } 1160 1161 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode); 1162 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name); 1163 1164 /* 1165 * * One-way authentication userid 1166 * */ 1167 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET); 1168 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 1169 /* 1170 * * One-way authentication password 1171 * */ 1172 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET); 1173 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR); 1174 /* 1175 * * Enforce mutual authentication 1176 * */ 1177 DEF_TPG_AUTH_INT(authenticate_target); 1178 TPG_AUTH_ATTR_RO(authenticate_target); 1179 /* 1180 * * Mutual authentication userid 1181 * */ 1182 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1183 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 1184 /* 1185 * * Mutual authentication password 1186 * */ 1187 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1188 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 1189 1190 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = { 1191 &iscsi_tpg_auth_userid.attr, 1192 &iscsi_tpg_auth_password.attr, 1193 &iscsi_tpg_auth_authenticate_target.attr, 1194 &iscsi_tpg_auth_userid_mutual.attr, 1195 &iscsi_tpg_auth_password_mutual.attr, 1196 NULL, 1197 }; 1198 1199 /* End items for lio_target_tpg_auth_cit */ 1200 1201 /* Start items for lio_target_tpg_param_cit */ 1202 1203 #define DEF_TPG_PARAM(name) \ 1204 static ssize_t iscsi_tpg_param_show_##name( \ 1205 struct se_portal_group *se_tpg, \ 1206 char *page) \ 1207 { \ 1208 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1209 struct iscsi_portal_group, tpg_se_tpg); \ 1210 struct iscsi_param *param; \ 1211 ssize_t rb; \ 1212 \ 1213 if (iscsit_get_tpg(tpg) < 0) \ 1214 return -EINVAL; \ 1215 \ 1216 param = iscsi_find_param_from_key(__stringify(name), \ 1217 tpg->param_list); \ 1218 if (!param) { \ 1219 iscsit_put_tpg(tpg); \ 1220 return -EINVAL; \ 1221 } \ 1222 rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \ 1223 \ 1224 iscsit_put_tpg(tpg); \ 1225 return rb; \ 1226 } \ 1227 static ssize_t iscsi_tpg_param_store_##name( \ 1228 struct se_portal_group *se_tpg, \ 1229 const char *page, \ 1230 size_t count) \ 1231 { \ 1232 struct iscsi_portal_group *tpg = container_of(se_tpg, \ 1233 struct iscsi_portal_group, tpg_se_tpg); \ 1234 char *buf; \ 1235 int ret, len; \ 1236 \ 1237 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \ 1238 if (!buf) \ 1239 return -ENOMEM; \ 1240 len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \ 1241 if (isspace(buf[len-1])) \ 1242 buf[len-1] = '\0'; /* Kill newline */ \ 1243 \ 1244 if (iscsit_get_tpg(tpg) < 0) { \ 1245 kfree(buf); \ 1246 return -EINVAL; \ 1247 } \ 1248 \ 1249 ret = iscsi_change_param_value(buf, tpg->param_list, 1); \ 1250 if (ret < 0) \ 1251 goto out; \ 1252 \ 1253 kfree(buf); \ 1254 iscsit_put_tpg(tpg); \ 1255 return count; \ 1256 out: \ 1257 kfree(buf); \ 1258 iscsit_put_tpg(tpg); \ 1259 return -EINVAL; \ 1260 } 1261 1262 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode); 1263 1264 DEF_TPG_PARAM(AuthMethod); 1265 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR); 1266 1267 DEF_TPG_PARAM(HeaderDigest); 1268 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR); 1269 1270 DEF_TPG_PARAM(DataDigest); 1271 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR); 1272 1273 DEF_TPG_PARAM(MaxConnections); 1274 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR); 1275 1276 DEF_TPG_PARAM(TargetAlias); 1277 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR); 1278 1279 DEF_TPG_PARAM(InitialR2T); 1280 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR); 1281 1282 DEF_TPG_PARAM(ImmediateData); 1283 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR); 1284 1285 DEF_TPG_PARAM(MaxRecvDataSegmentLength); 1286 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR); 1287 1288 DEF_TPG_PARAM(MaxXmitDataSegmentLength); 1289 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR); 1290 1291 DEF_TPG_PARAM(MaxBurstLength); 1292 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR); 1293 1294 DEF_TPG_PARAM(FirstBurstLength); 1295 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR); 1296 1297 DEF_TPG_PARAM(DefaultTime2Wait); 1298 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR); 1299 1300 DEF_TPG_PARAM(DefaultTime2Retain); 1301 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR); 1302 1303 DEF_TPG_PARAM(MaxOutstandingR2T); 1304 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR); 1305 1306 DEF_TPG_PARAM(DataPDUInOrder); 1307 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR); 1308 1309 DEF_TPG_PARAM(DataSequenceInOrder); 1310 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR); 1311 1312 DEF_TPG_PARAM(ErrorRecoveryLevel); 1313 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR); 1314 1315 DEF_TPG_PARAM(IFMarker); 1316 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR); 1317 1318 DEF_TPG_PARAM(OFMarker); 1319 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR); 1320 1321 DEF_TPG_PARAM(IFMarkInt); 1322 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR); 1323 1324 DEF_TPG_PARAM(OFMarkInt); 1325 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR); 1326 1327 static struct configfs_attribute *lio_target_tpg_param_attrs[] = { 1328 &iscsi_tpg_param_AuthMethod.attr, 1329 &iscsi_tpg_param_HeaderDigest.attr, 1330 &iscsi_tpg_param_DataDigest.attr, 1331 &iscsi_tpg_param_MaxConnections.attr, 1332 &iscsi_tpg_param_TargetAlias.attr, 1333 &iscsi_tpg_param_InitialR2T.attr, 1334 &iscsi_tpg_param_ImmediateData.attr, 1335 &iscsi_tpg_param_MaxRecvDataSegmentLength.attr, 1336 &iscsi_tpg_param_MaxXmitDataSegmentLength.attr, 1337 &iscsi_tpg_param_MaxBurstLength.attr, 1338 &iscsi_tpg_param_FirstBurstLength.attr, 1339 &iscsi_tpg_param_DefaultTime2Wait.attr, 1340 &iscsi_tpg_param_DefaultTime2Retain.attr, 1341 &iscsi_tpg_param_MaxOutstandingR2T.attr, 1342 &iscsi_tpg_param_DataPDUInOrder.attr, 1343 &iscsi_tpg_param_DataSequenceInOrder.attr, 1344 &iscsi_tpg_param_ErrorRecoveryLevel.attr, 1345 &iscsi_tpg_param_IFMarker.attr, 1346 &iscsi_tpg_param_OFMarker.attr, 1347 &iscsi_tpg_param_IFMarkInt.attr, 1348 &iscsi_tpg_param_OFMarkInt.attr, 1349 NULL, 1350 }; 1351 1352 /* End items for lio_target_tpg_param_cit */ 1353 1354 /* Start items for lio_target_tpg_cit */ 1355 1356 static ssize_t lio_target_tpg_show_enable( 1357 struct se_portal_group *se_tpg, 1358 char *page) 1359 { 1360 struct iscsi_portal_group *tpg = container_of(se_tpg, 1361 struct iscsi_portal_group, tpg_se_tpg); 1362 ssize_t len; 1363 1364 spin_lock(&tpg->tpg_state_lock); 1365 len = sprintf(page, "%d\n", 1366 (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0); 1367 spin_unlock(&tpg->tpg_state_lock); 1368 1369 return len; 1370 } 1371 1372 static ssize_t lio_target_tpg_store_enable( 1373 struct se_portal_group *se_tpg, 1374 const char *page, 1375 size_t count) 1376 { 1377 struct iscsi_portal_group *tpg = container_of(se_tpg, 1378 struct iscsi_portal_group, tpg_se_tpg); 1379 u32 op; 1380 int ret; 1381 1382 ret = kstrtou32(page, 0, &op); 1383 if (ret) 1384 return ret; 1385 if ((op != 1) && (op != 0)) { 1386 pr_err("Illegal value for tpg_enable: %u\n", op); 1387 return -EINVAL; 1388 } 1389 1390 ret = iscsit_get_tpg(tpg); 1391 if (ret < 0) 1392 return -EINVAL; 1393 1394 if (op) { 1395 ret = iscsit_tpg_enable_portal_group(tpg); 1396 if (ret < 0) 1397 goto out; 1398 } else { 1399 /* 1400 * iscsit_tpg_disable_portal_group() assumes force=1 1401 */ 1402 ret = iscsit_tpg_disable_portal_group(tpg, 1); 1403 if (ret < 0) 1404 goto out; 1405 } 1406 1407 iscsit_put_tpg(tpg); 1408 return count; 1409 out: 1410 iscsit_put_tpg(tpg); 1411 return -EINVAL; 1412 } 1413 1414 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR); 1415 1416 static struct configfs_attribute *lio_target_tpg_attrs[] = { 1417 &lio_target_tpg_enable.attr, 1418 NULL, 1419 }; 1420 1421 /* End items for lio_target_tpg_cit */ 1422 1423 /* Start items for lio_target_tiqn_cit */ 1424 1425 static struct se_portal_group *lio_target_tiqn_addtpg( 1426 struct se_wwn *wwn, 1427 struct config_group *group, 1428 const char *name) 1429 { 1430 struct iscsi_portal_group *tpg; 1431 struct iscsi_tiqn *tiqn; 1432 char *tpgt_str; 1433 int ret; 1434 u16 tpgt; 1435 1436 tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1437 /* 1438 * Only tpgt_# directory groups can be created below 1439 * target/iscsi/iqn.superturodiskarry/ 1440 */ 1441 tpgt_str = strstr(name, "tpgt_"); 1442 if (!tpgt_str) { 1443 pr_err("Unable to locate \"tpgt_#\" directory" 1444 " group\n"); 1445 return NULL; 1446 } 1447 tpgt_str += 5; /* Skip ahead of "tpgt_" */ 1448 ret = kstrtou16(tpgt_str, 0, &tpgt); 1449 if (ret) 1450 return NULL; 1451 1452 tpg = iscsit_alloc_portal_group(tiqn, tpgt); 1453 if (!tpg) 1454 return NULL; 1455 1456 ret = core_tpg_register( 1457 &lio_target_fabric_configfs->tf_ops, 1458 wwn, &tpg->tpg_se_tpg, tpg, 1459 TRANSPORT_TPG_TYPE_NORMAL); 1460 if (ret < 0) 1461 return NULL; 1462 1463 ret = iscsit_tpg_add_portal_group(tiqn, tpg); 1464 if (ret != 0) 1465 goto out; 1466 1467 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1468 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n", 1469 name); 1470 return &tpg->tpg_se_tpg; 1471 out: 1472 core_tpg_deregister(&tpg->tpg_se_tpg); 1473 kfree(tpg); 1474 return NULL; 1475 } 1476 1477 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg) 1478 { 1479 struct iscsi_portal_group *tpg; 1480 struct iscsi_tiqn *tiqn; 1481 1482 tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg); 1483 tiqn = tpg->tpg_tiqn; 1484 /* 1485 * iscsit_tpg_del_portal_group() assumes force=1 1486 */ 1487 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n"); 1488 iscsit_tpg_del_portal_group(tiqn, tpg, 1); 1489 } 1490 1491 /* End items for lio_target_tiqn_cit */ 1492 1493 /* Start LIO-Target TIQN struct contig_item lio_target_cit */ 1494 1495 static ssize_t lio_target_wwn_show_attr_lio_version( 1496 struct target_fabric_configfs *tf, 1497 char *page) 1498 { 1499 return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n"); 1500 } 1501 1502 TF_WWN_ATTR_RO(lio_target, lio_version); 1503 1504 static struct configfs_attribute *lio_target_wwn_attrs[] = { 1505 &lio_target_wwn_lio_version.attr, 1506 NULL, 1507 }; 1508 1509 static struct se_wwn *lio_target_call_coreaddtiqn( 1510 struct target_fabric_configfs *tf, 1511 struct config_group *group, 1512 const char *name) 1513 { 1514 struct config_group *stats_cg; 1515 struct iscsi_tiqn *tiqn; 1516 1517 tiqn = iscsit_add_tiqn((unsigned char *)name); 1518 if (IS_ERR(tiqn)) 1519 return ERR_CAST(tiqn); 1520 /* 1521 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group. 1522 */ 1523 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group; 1524 1525 stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 1526 GFP_KERNEL); 1527 if (!stats_cg->default_groups) { 1528 pr_err("Unable to allocate memory for" 1529 " stats_cg->default_groups\n"); 1530 iscsit_del_tiqn(tiqn); 1531 return ERR_PTR(-ENOMEM); 1532 } 1533 1534 stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group; 1535 stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group; 1536 stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group; 1537 stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group; 1538 stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group; 1539 stats_cg->default_groups[5] = NULL; 1540 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group, 1541 "iscsi_instance", &iscsi_stat_instance_cit); 1542 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group, 1543 "iscsi_sess_err", &iscsi_stat_sess_err_cit); 1544 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group, 1545 "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit); 1546 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group, 1547 "iscsi_login_stats", &iscsi_stat_login_cit); 1548 config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group, 1549 "iscsi_logout_stats", &iscsi_stat_logout_cit); 1550 1551 pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn); 1552 pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:" 1553 " %s\n", name); 1554 return &tiqn->tiqn_wwn; 1555 } 1556 1557 static void lio_target_call_coredeltiqn( 1558 struct se_wwn *wwn) 1559 { 1560 struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn); 1561 struct config_item *df_item; 1562 struct config_group *stats_cg; 1563 int i; 1564 1565 stats_cg = &tiqn->tiqn_wwn.fabric_stat_group; 1566 for (i = 0; stats_cg->default_groups[i]; i++) { 1567 df_item = &stats_cg->default_groups[i]->cg_item; 1568 stats_cg->default_groups[i] = NULL; 1569 config_item_put(df_item); 1570 } 1571 kfree(stats_cg->default_groups); 1572 1573 pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n", 1574 tiqn->tiqn); 1575 iscsit_del_tiqn(tiqn); 1576 } 1577 1578 /* End LIO-Target TIQN struct contig_lio_target_cit */ 1579 1580 /* Start lio_target_discovery_auth_cit */ 1581 1582 #define DEF_DISC_AUTH_STR(name, flags) \ 1583 __DEF_NACL_AUTH_STR(disc, name, flags) \ 1584 static ssize_t iscsi_disc_show_##name( \ 1585 struct target_fabric_configfs *tf, \ 1586 char *page) \ 1587 { \ 1588 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \ 1589 page); \ 1590 } \ 1591 static ssize_t iscsi_disc_store_##name( \ 1592 struct target_fabric_configfs *tf, \ 1593 const char *page, \ 1594 size_t count) \ 1595 { \ 1596 return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \ 1597 page, count); \ 1598 } 1599 1600 #define DEF_DISC_AUTH_INT(name) \ 1601 __DEF_NACL_AUTH_INT(disc, name) \ 1602 static ssize_t iscsi_disc_show_##name( \ 1603 struct target_fabric_configfs *tf, \ 1604 char *page) \ 1605 { \ 1606 return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \ 1607 page); \ 1608 } 1609 1610 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode) 1611 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name) 1612 1613 /* 1614 * One-way authentication userid 1615 */ 1616 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET); 1617 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR); 1618 /* 1619 * One-way authentication password 1620 */ 1621 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET); 1622 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR); 1623 /* 1624 * Enforce mutual authentication 1625 */ 1626 DEF_DISC_AUTH_INT(authenticate_target); 1627 DISC_AUTH_ATTR_RO(authenticate_target); 1628 /* 1629 * Mutual authentication userid 1630 */ 1631 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET); 1632 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR); 1633 /* 1634 * Mutual authentication password 1635 */ 1636 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET); 1637 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR); 1638 1639 /* 1640 * enforce_discovery_auth 1641 */ 1642 static ssize_t iscsi_disc_show_enforce_discovery_auth( 1643 struct target_fabric_configfs *tf, 1644 char *page) 1645 { 1646 struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth; 1647 1648 return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth); 1649 } 1650 1651 static ssize_t iscsi_disc_store_enforce_discovery_auth( 1652 struct target_fabric_configfs *tf, 1653 const char *page, 1654 size_t count) 1655 { 1656 struct iscsi_param *param; 1657 struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg; 1658 u32 op; 1659 int err; 1660 1661 err = kstrtou32(page, 0, &op); 1662 if (err) 1663 return -EINVAL; 1664 if ((op != 1) && (op != 0)) { 1665 pr_err("Illegal value for enforce_discovery_auth:" 1666 " %u\n", op); 1667 return -EINVAL; 1668 } 1669 1670 if (!discovery_tpg) { 1671 pr_err("iscsit_global->discovery_tpg is NULL\n"); 1672 return -EINVAL; 1673 } 1674 1675 param = iscsi_find_param_from_key(AUTHMETHOD, 1676 discovery_tpg->param_list); 1677 if (!param) 1678 return -EINVAL; 1679 1680 if (op) { 1681 /* 1682 * Reset the AuthMethod key to CHAP. 1683 */ 1684 if (iscsi_update_param_value(param, CHAP) < 0) 1685 return -EINVAL; 1686 1687 discovery_tpg->tpg_attrib.authentication = 1; 1688 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1; 1689 pr_debug("LIO-CORE[0] Successfully enabled" 1690 " authentication enforcement for iSCSI" 1691 " Discovery TPG\n"); 1692 } else { 1693 /* 1694 * Reset the AuthMethod key to CHAP,None 1695 */ 1696 if (iscsi_update_param_value(param, "CHAP,None") < 0) 1697 return -EINVAL; 1698 1699 discovery_tpg->tpg_attrib.authentication = 0; 1700 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0; 1701 pr_debug("LIO-CORE[0] Successfully disabled" 1702 " authentication enforcement for iSCSI" 1703 " Discovery TPG\n"); 1704 } 1705 1706 return count; 1707 } 1708 1709 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR); 1710 1711 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { 1712 &iscsi_disc_userid.attr, 1713 &iscsi_disc_password.attr, 1714 &iscsi_disc_authenticate_target.attr, 1715 &iscsi_disc_userid_mutual.attr, 1716 &iscsi_disc_password_mutual.attr, 1717 &iscsi_disc_enforce_discovery_auth.attr, 1718 NULL, 1719 }; 1720 1721 /* End lio_target_discovery_auth_cit */ 1722 1723 /* Start functions for target_core_fabric_ops */ 1724 1725 static char *iscsi_get_fabric_name(void) 1726 { 1727 return "iSCSI"; 1728 } 1729 1730 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd) 1731 { 1732 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1733 1734 /* only used for printks or comparism with ->ref_task_tag */ 1735 return (__force u32)cmd->init_task_tag; 1736 } 1737 1738 static int iscsi_get_cmd_state(struct se_cmd *se_cmd) 1739 { 1740 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1741 1742 return cmd->i_state; 1743 } 1744 1745 static u32 lio_sess_get_index(struct se_session *se_sess) 1746 { 1747 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1748 1749 return sess->session_index; 1750 } 1751 1752 static u32 lio_sess_get_initiator_sid( 1753 struct se_session *se_sess, 1754 unsigned char *buf, 1755 u32 size) 1756 { 1757 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1758 /* 1759 * iSCSI Initiator Session Identifier from RFC-3720. 1760 */ 1761 return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x", 1762 sess->isid[0], sess->isid[1], sess->isid[2], 1763 sess->isid[3], sess->isid[4], sess->isid[5]); 1764 } 1765 1766 static int lio_queue_data_in(struct se_cmd *se_cmd) 1767 { 1768 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1769 1770 cmd->i_state = ISTATE_SEND_DATAIN; 1771 cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd); 1772 1773 return 0; 1774 } 1775 1776 static int lio_write_pending(struct se_cmd *se_cmd) 1777 { 1778 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1779 struct iscsi_conn *conn = cmd->conn; 1780 1781 if (!cmd->immediate_data && !cmd->unsolicited_data) 1782 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false); 1783 1784 return 0; 1785 } 1786 1787 static int lio_write_pending_status(struct se_cmd *se_cmd) 1788 { 1789 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1790 int ret; 1791 1792 spin_lock_bh(&cmd->istate_lock); 1793 ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT); 1794 spin_unlock_bh(&cmd->istate_lock); 1795 1796 return ret; 1797 } 1798 1799 static int lio_queue_status(struct se_cmd *se_cmd) 1800 { 1801 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1802 1803 cmd->i_state = ISTATE_SEND_STATUS; 1804 1805 if (cmd->se_cmd.scsi_status || cmd->sense_reason) { 1806 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1807 return 0; 1808 } 1809 cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd); 1810 1811 return 0; 1812 } 1813 1814 static void lio_queue_tm_rsp(struct se_cmd *se_cmd) 1815 { 1816 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1817 1818 cmd->i_state = ISTATE_SEND_TASKMGTRSP; 1819 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state); 1820 } 1821 1822 static void lio_aborted_task(struct se_cmd *se_cmd) 1823 { 1824 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1825 1826 cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd); 1827 } 1828 1829 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg) 1830 { 1831 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1832 1833 return &tpg->tpg_tiqn->tiqn[0]; 1834 } 1835 1836 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg) 1837 { 1838 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1839 1840 return tpg->tpgt; 1841 } 1842 1843 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg) 1844 { 1845 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1846 1847 return tpg->tpg_attrib.default_cmdsn_depth; 1848 } 1849 1850 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg) 1851 { 1852 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1853 1854 return tpg->tpg_attrib.generate_node_acls; 1855 } 1856 1857 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg) 1858 { 1859 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1860 1861 return tpg->tpg_attrib.cache_dynamic_acls; 1862 } 1863 1864 static int lio_tpg_check_demo_mode_write_protect( 1865 struct se_portal_group *se_tpg) 1866 { 1867 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1868 1869 return tpg->tpg_attrib.demo_mode_write_protect; 1870 } 1871 1872 static int lio_tpg_check_prod_mode_write_protect( 1873 struct se_portal_group *se_tpg) 1874 { 1875 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1876 1877 return tpg->tpg_attrib.prod_mode_write_protect; 1878 } 1879 1880 static void lio_tpg_release_fabric_acl( 1881 struct se_portal_group *se_tpg, 1882 struct se_node_acl *se_acl) 1883 { 1884 struct iscsi_node_acl *acl = container_of(se_acl, 1885 struct iscsi_node_acl, se_node_acl); 1886 kfree(acl); 1887 } 1888 1889 /* 1890 * Called with spin_lock_bh(struct se_portal_group->session_lock) held.. 1891 * 1892 * Also, this function calls iscsit_inc_session_usage_count() on the 1893 * struct iscsi_session in question. 1894 */ 1895 static int lio_tpg_shutdown_session(struct se_session *se_sess) 1896 { 1897 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1898 1899 spin_lock(&sess->conn_lock); 1900 if (atomic_read(&sess->session_fall_back_to_erl0) || 1901 atomic_read(&sess->session_logout) || 1902 (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) { 1903 spin_unlock(&sess->conn_lock); 1904 return 0; 1905 } 1906 atomic_set(&sess->session_reinstatement, 1); 1907 spin_unlock(&sess->conn_lock); 1908 1909 iscsit_stop_time2retain_timer(sess); 1910 iscsit_stop_session(sess, 1, 1); 1911 1912 return 1; 1913 } 1914 1915 /* 1916 * Calls iscsit_dec_session_usage_count() as inverse of 1917 * lio_tpg_shutdown_session() 1918 */ 1919 static void lio_tpg_close_session(struct se_session *se_sess) 1920 { 1921 struct iscsi_session *sess = se_sess->fabric_sess_ptr; 1922 /* 1923 * If the iSCSI Session for the iSCSI Initiator Node exists, 1924 * forcefully shutdown the iSCSI NEXUS. 1925 */ 1926 iscsit_close_session(sess); 1927 } 1928 1929 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg) 1930 { 1931 struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr; 1932 1933 return tpg->tpg_tiqn->tiqn_index; 1934 } 1935 1936 static void lio_set_default_node_attributes(struct se_node_acl *se_acl) 1937 { 1938 struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl, 1939 se_node_acl); 1940 struct se_portal_group *se_tpg = se_acl->se_tpg; 1941 struct iscsi_portal_group *tpg = container_of(se_tpg, 1942 struct iscsi_portal_group, tpg_se_tpg); 1943 1944 acl->node_attrib.nacl = acl; 1945 iscsit_set_default_node_attribues(acl, tpg); 1946 } 1947 1948 static int lio_check_stop_free(struct se_cmd *se_cmd) 1949 { 1950 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 1951 } 1952 1953 static void lio_release_cmd(struct se_cmd *se_cmd) 1954 { 1955 struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); 1956 1957 pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd); 1958 iscsit_release_cmd(cmd); 1959 } 1960 1961 /* End functions for target_core_fabric_ops */ 1962 1963 int iscsi_target_register_configfs(void) 1964 { 1965 struct target_fabric_configfs *fabric; 1966 int ret; 1967 1968 lio_target_fabric_configfs = NULL; 1969 fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi"); 1970 if (IS_ERR(fabric)) { 1971 pr_err("target_fabric_configfs_init() for" 1972 " LIO-Target failed!\n"); 1973 return PTR_ERR(fabric); 1974 } 1975 /* 1976 * Setup the fabric API of function pointers used by target_core_mod.. 1977 */ 1978 fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name; 1979 fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident; 1980 fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn; 1981 fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag; 1982 fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth; 1983 fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id; 1984 fabric->tf_ops.tpg_get_pr_transport_id_len = 1985 &iscsi_get_pr_transport_id_len; 1986 fabric->tf_ops.tpg_parse_pr_out_transport_id = 1987 &iscsi_parse_pr_out_transport_id; 1988 fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode; 1989 fabric->tf_ops.tpg_check_demo_mode_cache = 1990 &lio_tpg_check_demo_mode_cache; 1991 fabric->tf_ops.tpg_check_demo_mode_write_protect = 1992 &lio_tpg_check_demo_mode_write_protect; 1993 fabric->tf_ops.tpg_check_prod_mode_write_protect = 1994 &lio_tpg_check_prod_mode_write_protect; 1995 fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl; 1996 fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl; 1997 fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index; 1998 fabric->tf_ops.check_stop_free = &lio_check_stop_free, 1999 fabric->tf_ops.release_cmd = &lio_release_cmd; 2000 fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session; 2001 fabric->tf_ops.close_session = &lio_tpg_close_session; 2002 fabric->tf_ops.sess_get_index = &lio_sess_get_index; 2003 fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid; 2004 fabric->tf_ops.write_pending = &lio_write_pending; 2005 fabric->tf_ops.write_pending_status = &lio_write_pending_status; 2006 fabric->tf_ops.set_default_node_attributes = 2007 &lio_set_default_node_attributes; 2008 fabric->tf_ops.get_task_tag = &iscsi_get_task_tag; 2009 fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state; 2010 fabric->tf_ops.queue_data_in = &lio_queue_data_in; 2011 fabric->tf_ops.queue_status = &lio_queue_status; 2012 fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp; 2013 fabric->tf_ops.aborted_task = &lio_aborted_task; 2014 /* 2015 * Setup function pointers for generic logic in target_core_fabric_configfs.c 2016 */ 2017 fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn; 2018 fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn; 2019 fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg; 2020 fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg; 2021 fabric->tf_ops.fabric_post_link = NULL; 2022 fabric->tf_ops.fabric_pre_unlink = NULL; 2023 fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg; 2024 fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg; 2025 fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl; 2026 fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl; 2027 /* 2028 * Setup default attribute lists for various fabric->tf_cit_tmpl 2029 * sturct config_item_type's 2030 */ 2031 fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs; 2032 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs; 2033 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs; 2034 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs; 2035 fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs; 2036 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs; 2037 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs; 2038 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs; 2039 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs; 2040 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs; 2041 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs; 2042 2043 ret = target_fabric_configfs_register(fabric); 2044 if (ret < 0) { 2045 pr_err("target_fabric_configfs_register() for" 2046 " LIO-Target failed!\n"); 2047 target_fabric_configfs_free(fabric); 2048 return ret; 2049 } 2050 2051 lio_target_fabric_configfs = fabric; 2052 pr_debug("LIO_TARGET[0] - Set fabric ->" 2053 " lio_target_fabric_configfs\n"); 2054 return 0; 2055 } 2056 2057 2058 void iscsi_target_deregister_configfs(void) 2059 { 2060 if (!lio_target_fabric_configfs) 2061 return; 2062 /* 2063 * Shutdown discovery sessions and disable discovery TPG 2064 */ 2065 if (iscsit_global->discovery_tpg) 2066 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1); 2067 2068 target_fabric_configfs_deregister(lio_target_fabric_configfs); 2069 lio_target_fabric_configfs = NULL; 2070 pr_debug("LIO_TARGET[0] - Cleared" 2071 " lio_target_fabric_configfs\n"); 2072 } 2073