1 /******************************************************************************* 2 * This file contains iSCSI Target Portal Group related functions. 3 * 4 * (c) Copyright 2007-2013 Datera, Inc. 5 * 6 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 ******************************************************************************/ 18 19 #include <target/target_core_base.h> 20 #include <target/target_core_fabric.h> 21 #include <target/target_core_configfs.h> 22 23 #include "iscsi_target_core.h" 24 #include "iscsi_target_erl0.h" 25 #include "iscsi_target_login.h" 26 #include "iscsi_target_nodeattrib.h" 27 #include "iscsi_target_tpg.h" 28 #include "iscsi_target_util.h" 29 #include "iscsi_target.h" 30 #include "iscsi_target_parameters.h" 31 32 #include <target/iscsi/iscsi_transport.h> 33 34 struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt) 35 { 36 struct iscsi_portal_group *tpg; 37 38 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL); 39 if (!tpg) { 40 pr_err("Unable to allocate struct iscsi_portal_group\n"); 41 return NULL; 42 } 43 44 tpg->tpgt = tpgt; 45 tpg->tpg_state = TPG_STATE_FREE; 46 tpg->tpg_tiqn = tiqn; 47 INIT_LIST_HEAD(&tpg->tpg_gnp_list); 48 INIT_LIST_HEAD(&tpg->tpg_list); 49 mutex_init(&tpg->tpg_access_lock); 50 sema_init(&tpg->np_login_sem, 1); 51 spin_lock_init(&tpg->tpg_state_lock); 52 spin_lock_init(&tpg->tpg_np_lock); 53 54 return tpg; 55 } 56 57 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); 58 59 int iscsit_load_discovery_tpg(void) 60 { 61 struct iscsi_param *param; 62 struct iscsi_portal_group *tpg; 63 int ret; 64 65 tpg = iscsit_alloc_portal_group(NULL, 1); 66 if (!tpg) { 67 pr_err("Unable to allocate struct iscsi_portal_group\n"); 68 return -1; 69 } 70 71 ret = core_tpg_register( 72 &lio_target_fabric_configfs->tf_ops, 73 NULL, &tpg->tpg_se_tpg, tpg, 74 TRANSPORT_TPG_TYPE_DISCOVERY); 75 if (ret < 0) { 76 kfree(tpg); 77 return -1; 78 } 79 80 tpg->sid = 1; /* First Assigned LIO Session ID */ 81 iscsit_set_default_tpg_attribs(tpg); 82 83 if (iscsi_create_default_params(&tpg->param_list) < 0) 84 goto out; 85 /* 86 * By default we disable authentication for discovery sessions, 87 * this can be changed with: 88 * 89 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth 90 */ 91 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 92 if (!param) 93 goto out; 94 95 if (iscsi_update_param_value(param, "CHAP,None") < 0) 96 goto out; 97 98 tpg->tpg_attrib.authentication = 0; 99 100 spin_lock(&tpg->tpg_state_lock); 101 tpg->tpg_state = TPG_STATE_ACTIVE; 102 spin_unlock(&tpg->tpg_state_lock); 103 104 iscsit_global->discovery_tpg = tpg; 105 pr_debug("CORE[0] - Allocated Discovery TPG\n"); 106 107 return 0; 108 out: 109 if (tpg->sid == 1) 110 core_tpg_deregister(&tpg->tpg_se_tpg); 111 kfree(tpg); 112 return -1; 113 } 114 115 void iscsit_release_discovery_tpg(void) 116 { 117 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; 118 119 if (!tpg) 120 return; 121 122 core_tpg_deregister(&tpg->tpg_se_tpg); 123 124 kfree(tpg); 125 iscsit_global->discovery_tpg = NULL; 126 } 127 128 struct iscsi_portal_group *iscsit_get_tpg_from_np( 129 struct iscsi_tiqn *tiqn, 130 struct iscsi_np *np, 131 struct iscsi_tpg_np **tpg_np_out) 132 { 133 struct iscsi_portal_group *tpg = NULL; 134 struct iscsi_tpg_np *tpg_np; 135 136 spin_lock(&tiqn->tiqn_tpg_lock); 137 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 138 139 spin_lock(&tpg->tpg_state_lock); 140 if (tpg->tpg_state != TPG_STATE_ACTIVE) { 141 spin_unlock(&tpg->tpg_state_lock); 142 continue; 143 } 144 spin_unlock(&tpg->tpg_state_lock); 145 146 spin_lock(&tpg->tpg_np_lock); 147 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 148 if (tpg_np->tpg_np == np) { 149 *tpg_np_out = tpg_np; 150 kref_get(&tpg_np->tpg_np_kref); 151 spin_unlock(&tpg->tpg_np_lock); 152 spin_unlock(&tiqn->tiqn_tpg_lock); 153 return tpg; 154 } 155 } 156 spin_unlock(&tpg->tpg_np_lock); 157 } 158 spin_unlock(&tiqn->tiqn_tpg_lock); 159 160 return NULL; 161 } 162 163 int iscsit_get_tpg( 164 struct iscsi_portal_group *tpg) 165 { 166 int ret; 167 168 ret = mutex_lock_interruptible(&tpg->tpg_access_lock); 169 return ((ret != 0) || signal_pending(current)) ? -1 : 0; 170 } 171 172 void iscsit_put_tpg(struct iscsi_portal_group *tpg) 173 { 174 mutex_unlock(&tpg->tpg_access_lock); 175 } 176 177 static void iscsit_clear_tpg_np_login_thread( 178 struct iscsi_tpg_np *tpg_np, 179 struct iscsi_portal_group *tpg, 180 bool shutdown) 181 { 182 if (!tpg_np->tpg_np) { 183 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 184 return; 185 } 186 187 if (shutdown) 188 tpg_np->tpg_np->enabled = false; 189 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 190 } 191 192 static void iscsit_clear_tpg_np_login_threads( 193 struct iscsi_portal_group *tpg, 194 bool shutdown) 195 { 196 struct iscsi_tpg_np *tpg_np; 197 198 spin_lock(&tpg->tpg_np_lock); 199 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 200 if (!tpg_np->tpg_np) { 201 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 202 continue; 203 } 204 spin_unlock(&tpg->tpg_np_lock); 205 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); 206 spin_lock(&tpg->tpg_np_lock); 207 } 208 spin_unlock(&tpg->tpg_np_lock); 209 } 210 211 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) 212 { 213 iscsi_print_params(tpg->param_list); 214 } 215 216 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) 217 { 218 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 219 220 a->authentication = TA_AUTHENTICATION; 221 a->login_timeout = TA_LOGIN_TIMEOUT; 222 a->netif_timeout = TA_NETIF_TIMEOUT; 223 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 224 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 225 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 226 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 227 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 228 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 229 a->default_erl = TA_DEFAULT_ERL; 230 a->t10_pi = TA_DEFAULT_T10_PI; 231 } 232 233 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 234 { 235 if (tpg->tpg_state != TPG_STATE_FREE) { 236 pr_err("Unable to add iSCSI Target Portal Group: %d" 237 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 238 return -EEXIST; 239 } 240 iscsit_set_default_tpg_attribs(tpg); 241 242 if (iscsi_create_default_params(&tpg->param_list) < 0) 243 goto err_out; 244 245 tpg->tpg_attrib.tpg = tpg; 246 247 spin_lock(&tpg->tpg_state_lock); 248 tpg->tpg_state = TPG_STATE_INACTIVE; 249 spin_unlock(&tpg->tpg_state_lock); 250 251 spin_lock(&tiqn->tiqn_tpg_lock); 252 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 253 tiqn->tiqn_ntpgs++; 254 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 255 tiqn->tiqn, tpg->tpgt); 256 spin_unlock(&tiqn->tiqn_tpg_lock); 257 258 return 0; 259 err_out: 260 if (tpg->param_list) { 261 iscsi_release_param_list(tpg->param_list); 262 tpg->param_list = NULL; 263 } 264 kfree(tpg); 265 return -ENOMEM; 266 } 267 268 int iscsit_tpg_del_portal_group( 269 struct iscsi_tiqn *tiqn, 270 struct iscsi_portal_group *tpg, 271 int force) 272 { 273 u8 old_state = tpg->tpg_state; 274 275 spin_lock(&tpg->tpg_state_lock); 276 tpg->tpg_state = TPG_STATE_INACTIVE; 277 spin_unlock(&tpg->tpg_state_lock); 278 279 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 280 pr_err("Unable to delete iSCSI Target Portal Group:" 281 " %hu while active sessions exist, and force=0\n", 282 tpg->tpgt); 283 tpg->tpg_state = old_state; 284 return -EPERM; 285 } 286 287 core_tpg_clear_object_luns(&tpg->tpg_se_tpg); 288 289 if (tpg->param_list) { 290 iscsi_release_param_list(tpg->param_list); 291 tpg->param_list = NULL; 292 } 293 294 core_tpg_deregister(&tpg->tpg_se_tpg); 295 296 spin_lock(&tpg->tpg_state_lock); 297 tpg->tpg_state = TPG_STATE_FREE; 298 spin_unlock(&tpg->tpg_state_lock); 299 300 spin_lock(&tiqn->tiqn_tpg_lock); 301 tiqn->tiqn_ntpgs--; 302 list_del(&tpg->tpg_list); 303 spin_unlock(&tiqn->tiqn_tpg_lock); 304 305 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 306 tiqn->tiqn, tpg->tpgt); 307 308 kfree(tpg); 309 return 0; 310 } 311 312 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 313 { 314 struct iscsi_param *param; 315 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 316 int ret; 317 318 spin_lock(&tpg->tpg_state_lock); 319 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 320 pr_err("iSCSI target portal group: %hu is already" 321 " active, ignoring request.\n", tpg->tpgt); 322 spin_unlock(&tpg->tpg_state_lock); 323 return -EINVAL; 324 } 325 /* 326 * Make sure that AuthMethod does not contain None as an option 327 * unless explictly disabled. Set the default to CHAP if authentication 328 * is enforced (as per default), and remove the NONE option. 329 */ 330 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 331 if (!param) { 332 spin_unlock(&tpg->tpg_state_lock); 333 return -EINVAL; 334 } 335 336 if (tpg->tpg_attrib.authentication) { 337 if (!strcmp(param->value, NONE)) { 338 ret = iscsi_update_param_value(param, CHAP); 339 if (ret) 340 goto err; 341 } 342 343 ret = iscsit_ta_authentication(tpg, 1); 344 if (ret < 0) 345 goto err; 346 } 347 348 tpg->tpg_state = TPG_STATE_ACTIVE; 349 spin_unlock(&tpg->tpg_state_lock); 350 351 spin_lock(&tiqn->tiqn_tpg_lock); 352 tiqn->tiqn_active_tpgs++; 353 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 354 tpg->tpgt); 355 spin_unlock(&tiqn->tiqn_tpg_lock); 356 357 return 0; 358 359 err: 360 spin_unlock(&tpg->tpg_state_lock); 361 return ret; 362 } 363 364 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 365 { 366 struct iscsi_tiqn *tiqn; 367 u8 old_state = tpg->tpg_state; 368 369 spin_lock(&tpg->tpg_state_lock); 370 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 371 pr_err("iSCSI Target Portal Group: %hu is already" 372 " inactive, ignoring request.\n", tpg->tpgt); 373 spin_unlock(&tpg->tpg_state_lock); 374 return -EINVAL; 375 } 376 tpg->tpg_state = TPG_STATE_INACTIVE; 377 spin_unlock(&tpg->tpg_state_lock); 378 379 iscsit_clear_tpg_np_login_threads(tpg, false); 380 381 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 382 spin_lock(&tpg->tpg_state_lock); 383 tpg->tpg_state = old_state; 384 spin_unlock(&tpg->tpg_state_lock); 385 pr_err("Unable to disable iSCSI Target Portal Group:" 386 " %hu while active sessions exist, and force=0\n", 387 tpg->tpgt); 388 return -EPERM; 389 } 390 391 tiqn = tpg->tpg_tiqn; 392 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 393 return 0; 394 395 spin_lock(&tiqn->tiqn_tpg_lock); 396 tiqn->tiqn_active_tpgs--; 397 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 398 tpg->tpgt); 399 spin_unlock(&tiqn->tiqn_tpg_lock); 400 401 return 0; 402 } 403 404 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 405 struct iscsi_session *sess) 406 { 407 struct se_session *se_sess = sess->se_sess; 408 struct se_node_acl *se_nacl = se_sess->se_node_acl; 409 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 410 se_node_acl); 411 412 return &acl->node_attrib; 413 } 414 415 struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 416 struct iscsi_tpg_np *tpg_np, 417 int network_transport) 418 { 419 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 420 421 spin_lock(&tpg_np->tpg_np_parent_lock); 422 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 423 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 424 if (tpg_np_child->tpg_np->np_network_transport == 425 network_transport) { 426 spin_unlock(&tpg_np->tpg_np_parent_lock); 427 return tpg_np_child; 428 } 429 } 430 spin_unlock(&tpg_np->tpg_np_parent_lock); 431 432 return NULL; 433 } 434 435 static bool iscsit_tpg_check_network_portal( 436 struct iscsi_tiqn *tiqn, 437 struct __kernel_sockaddr_storage *sockaddr, 438 int network_transport) 439 { 440 struct iscsi_portal_group *tpg; 441 struct iscsi_tpg_np *tpg_np; 442 struct iscsi_np *np; 443 bool match = false; 444 445 spin_lock(&tiqn->tiqn_tpg_lock); 446 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 447 448 spin_lock(&tpg->tpg_np_lock); 449 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 450 np = tpg_np->tpg_np; 451 452 match = iscsit_check_np_match(sockaddr, np, 453 network_transport); 454 if (match) 455 break; 456 } 457 spin_unlock(&tpg->tpg_np_lock); 458 } 459 spin_unlock(&tiqn->tiqn_tpg_lock); 460 461 return match; 462 } 463 464 struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 465 struct iscsi_portal_group *tpg, 466 struct __kernel_sockaddr_storage *sockaddr, 467 char *ip_str, 468 struct iscsi_tpg_np *tpg_np_parent, 469 int network_transport) 470 { 471 struct iscsi_np *np; 472 struct iscsi_tpg_np *tpg_np; 473 474 if (!tpg_np_parent) { 475 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 476 network_transport)) { 477 pr_err("Network Portal: %s already exists on a" 478 " different TPG on %s\n", ip_str, 479 tpg->tpg_tiqn->tiqn); 480 return ERR_PTR(-EEXIST); 481 } 482 } 483 484 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 485 if (!tpg_np) { 486 pr_err("Unable to allocate memory for" 487 " struct iscsi_tpg_np.\n"); 488 return ERR_PTR(-ENOMEM); 489 } 490 491 np = iscsit_add_np(sockaddr, ip_str, network_transport); 492 if (IS_ERR(np)) { 493 kfree(tpg_np); 494 return ERR_CAST(np); 495 } 496 497 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 498 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 499 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 500 spin_lock_init(&tpg_np->tpg_np_parent_lock); 501 init_completion(&tpg_np->tpg_np_comp); 502 kref_init(&tpg_np->tpg_np_kref); 503 tpg_np->tpg_np = np; 504 np->tpg_np = tpg_np; 505 tpg_np->tpg = tpg; 506 507 spin_lock(&tpg->tpg_np_lock); 508 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 509 tpg->num_tpg_nps++; 510 if (tpg->tpg_tiqn) 511 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 512 spin_unlock(&tpg->tpg_np_lock); 513 514 if (tpg_np_parent) { 515 tpg_np->tpg_np_parent = tpg_np_parent; 516 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 517 list_add_tail(&tpg_np->tpg_np_child_list, 518 &tpg_np_parent->tpg_np_parent_list); 519 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 520 } 521 522 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", 523 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 524 np->np_transport->name); 525 526 return tpg_np; 527 } 528 529 static int iscsit_tpg_release_np( 530 struct iscsi_tpg_np *tpg_np, 531 struct iscsi_portal_group *tpg, 532 struct iscsi_np *np) 533 { 534 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 535 536 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", 537 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 538 np->np_transport->name); 539 540 tpg_np->tpg_np = NULL; 541 tpg_np->tpg = NULL; 542 kfree(tpg_np); 543 /* 544 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 545 */ 546 return iscsit_del_np(np); 547 } 548 549 int iscsit_tpg_del_network_portal( 550 struct iscsi_portal_group *tpg, 551 struct iscsi_tpg_np *tpg_np) 552 { 553 struct iscsi_np *np; 554 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 555 int ret = 0; 556 557 np = tpg_np->tpg_np; 558 if (!np) { 559 pr_err("Unable to locate struct iscsi_np from" 560 " struct iscsi_tpg_np\n"); 561 return -EINVAL; 562 } 563 564 if (!tpg_np->tpg_np_parent) { 565 /* 566 * We are the parent tpg network portal. Release all of the 567 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 568 * list first. 569 */ 570 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 571 &tpg_np->tpg_np_parent_list, 572 tpg_np_child_list) { 573 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 574 if (ret < 0) 575 pr_err("iscsit_tpg_del_network_portal()" 576 " failed: %d\n", ret); 577 } 578 } else { 579 /* 580 * We are not the parent ISCSI_TCP tpg network portal. Release 581 * our own network portals from the child list. 582 */ 583 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 584 list_del(&tpg_np->tpg_np_child_list); 585 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 586 } 587 588 spin_lock(&tpg->tpg_np_lock); 589 list_del(&tpg_np->tpg_np_list); 590 tpg->num_tpg_nps--; 591 if (tpg->tpg_tiqn) 592 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 593 spin_unlock(&tpg->tpg_np_lock); 594 595 return iscsit_tpg_release_np(tpg_np, tpg, np); 596 } 597 598 int iscsit_tpg_set_initiator_node_queue_depth( 599 struct iscsi_portal_group *tpg, 600 unsigned char *initiatorname, 601 u32 queue_depth, 602 int force) 603 { 604 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, 605 initiatorname, queue_depth, force); 606 } 607 608 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 609 { 610 unsigned char buf1[256], buf2[256], *none = NULL; 611 int len; 612 struct iscsi_param *param; 613 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 614 615 if ((authentication != 1) && (authentication != 0)) { 616 pr_err("Illegal value for authentication parameter:" 617 " %u, ignoring request.\n", authentication); 618 return -EINVAL; 619 } 620 621 memset(buf1, 0, sizeof(buf1)); 622 memset(buf2, 0, sizeof(buf2)); 623 624 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 625 if (!param) 626 return -EINVAL; 627 628 if (authentication) { 629 snprintf(buf1, sizeof(buf1), "%s", param->value); 630 none = strstr(buf1, NONE); 631 if (!none) 632 goto out; 633 if (!strncmp(none + 4, ",", 1)) { 634 if (!strcmp(buf1, none)) 635 sprintf(buf2, "%s", none+5); 636 else { 637 none--; 638 *none = '\0'; 639 len = sprintf(buf2, "%s", buf1); 640 none += 5; 641 sprintf(buf2 + len, "%s", none); 642 } 643 } else { 644 none--; 645 *none = '\0'; 646 sprintf(buf2, "%s", buf1); 647 } 648 if (iscsi_update_param_value(param, buf2) < 0) 649 return -EINVAL; 650 } else { 651 snprintf(buf1, sizeof(buf1), "%s", param->value); 652 none = strstr(buf1, NONE); 653 if (none) 654 goto out; 655 strncat(buf1, ",", strlen(",")); 656 strncat(buf1, NONE, strlen(NONE)); 657 if (iscsi_update_param_value(param, buf1) < 0) 658 return -EINVAL; 659 } 660 661 out: 662 a->authentication = authentication; 663 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 664 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 665 666 return 0; 667 } 668 669 int iscsit_ta_login_timeout( 670 struct iscsi_portal_group *tpg, 671 u32 login_timeout) 672 { 673 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 674 675 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 676 pr_err("Requested Login Timeout %u larger than maximum" 677 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 678 return -EINVAL; 679 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 680 pr_err("Requested Logout Timeout %u smaller than" 681 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 682 return -EINVAL; 683 } 684 685 a->login_timeout = login_timeout; 686 pr_debug("Set Logout Timeout to %u for Target Portal Group" 687 " %hu\n", a->login_timeout, tpg->tpgt); 688 689 return 0; 690 } 691 692 int iscsit_ta_netif_timeout( 693 struct iscsi_portal_group *tpg, 694 u32 netif_timeout) 695 { 696 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 697 698 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 699 pr_err("Requested Network Interface Timeout %u larger" 700 " than maximum %u\n", netif_timeout, 701 TA_NETIF_TIMEOUT_MAX); 702 return -EINVAL; 703 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 704 pr_err("Requested Network Interface Timeout %u smaller" 705 " than minimum %u\n", netif_timeout, 706 TA_NETIF_TIMEOUT_MIN); 707 return -EINVAL; 708 } 709 710 a->netif_timeout = netif_timeout; 711 pr_debug("Set Network Interface Timeout to %u for" 712 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 713 714 return 0; 715 } 716 717 int iscsit_ta_generate_node_acls( 718 struct iscsi_portal_group *tpg, 719 u32 flag) 720 { 721 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 722 723 if ((flag != 0) && (flag != 1)) { 724 pr_err("Illegal value %d\n", flag); 725 return -EINVAL; 726 } 727 728 a->generate_node_acls = flag; 729 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 730 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 731 732 if (flag == 1 && a->cache_dynamic_acls == 0) { 733 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 734 "generate_node_acls=1\n"); 735 a->cache_dynamic_acls = 1; 736 } 737 738 return 0; 739 } 740 741 int iscsit_ta_default_cmdsn_depth( 742 struct iscsi_portal_group *tpg, 743 u32 tcq_depth) 744 { 745 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 746 747 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 748 pr_err("Requested Default Queue Depth: %u larger" 749 " than maximum %u\n", tcq_depth, 750 TA_DEFAULT_CMDSN_DEPTH_MAX); 751 return -EINVAL; 752 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 753 pr_err("Requested Default Queue Depth: %u smaller" 754 " than minimum %u\n", tcq_depth, 755 TA_DEFAULT_CMDSN_DEPTH_MIN); 756 return -EINVAL; 757 } 758 759 a->default_cmdsn_depth = tcq_depth; 760 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 761 tpg->tpgt, a->default_cmdsn_depth); 762 763 return 0; 764 } 765 766 int iscsit_ta_cache_dynamic_acls( 767 struct iscsi_portal_group *tpg, 768 u32 flag) 769 { 770 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 771 772 if ((flag != 0) && (flag != 1)) { 773 pr_err("Illegal value %d\n", flag); 774 return -EINVAL; 775 } 776 777 if (a->generate_node_acls == 1 && flag == 0) { 778 pr_debug("Skipping cache_dynamic_acls=0 when" 779 " generate_node_acls=1\n"); 780 return 0; 781 } 782 783 a->cache_dynamic_acls = flag; 784 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 785 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 786 "Enabled" : "Disabled"); 787 788 return 0; 789 } 790 791 int iscsit_ta_demo_mode_write_protect( 792 struct iscsi_portal_group *tpg, 793 u32 flag) 794 { 795 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 796 797 if ((flag != 0) && (flag != 1)) { 798 pr_err("Illegal value %d\n", flag); 799 return -EINVAL; 800 } 801 802 a->demo_mode_write_protect = flag; 803 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 804 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 805 806 return 0; 807 } 808 809 int iscsit_ta_prod_mode_write_protect( 810 struct iscsi_portal_group *tpg, 811 u32 flag) 812 { 813 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 814 815 if ((flag != 0) && (flag != 1)) { 816 pr_err("Illegal value %d\n", flag); 817 return -EINVAL; 818 } 819 820 a->prod_mode_write_protect = flag; 821 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 822 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 823 "ON" : "OFF"); 824 825 return 0; 826 } 827 828 int iscsit_ta_demo_mode_discovery( 829 struct iscsi_portal_group *tpg, 830 u32 flag) 831 { 832 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 833 834 if ((flag != 0) && (flag != 1)) { 835 pr_err("Illegal value %d\n", flag); 836 return -EINVAL; 837 } 838 839 a->demo_mode_discovery = flag; 840 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 841 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 842 "ON" : "OFF"); 843 844 return 0; 845 } 846 847 int iscsit_ta_default_erl( 848 struct iscsi_portal_group *tpg, 849 u32 default_erl) 850 { 851 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 852 853 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 854 pr_err("Illegal value for default_erl: %u\n", default_erl); 855 return -EINVAL; 856 } 857 858 a->default_erl = default_erl; 859 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 860 861 return 0; 862 } 863 864 int iscsit_ta_t10_pi( 865 struct iscsi_portal_group *tpg, 866 u32 flag) 867 { 868 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 869 870 if ((flag != 0) && (flag != 1)) { 871 pr_err("Illegal value %d\n", flag); 872 return -EINVAL; 873 } 874 875 a->t10_pi = flag; 876 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 877 " %s\n", tpg->tpgt, (a->t10_pi) ? 878 "ON" : "OFF"); 879 880 return 0; 881 } 882