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 <target/iscsi/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(&iscsi_ops, NULL, &tpg->tpg_se_tpg, 72 tpg, TRANSPORT_TPG_TYPE_DISCOVERY); 73 if (ret < 0) { 74 kfree(tpg); 75 return -1; 76 } 77 78 tpg->sid = 1; /* First Assigned LIO Session ID */ 79 iscsit_set_default_tpg_attribs(tpg); 80 81 if (iscsi_create_default_params(&tpg->param_list) < 0) 82 goto out; 83 /* 84 * By default we disable authentication for discovery sessions, 85 * this can be changed with: 86 * 87 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth 88 */ 89 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 90 if (!param) 91 goto out; 92 93 if (iscsi_update_param_value(param, "CHAP,None") < 0) 94 goto out; 95 96 tpg->tpg_attrib.authentication = 0; 97 98 spin_lock(&tpg->tpg_state_lock); 99 tpg->tpg_state = TPG_STATE_ACTIVE; 100 spin_unlock(&tpg->tpg_state_lock); 101 102 iscsit_global->discovery_tpg = tpg; 103 pr_debug("CORE[0] - Allocated Discovery TPG\n"); 104 105 return 0; 106 out: 107 if (tpg->sid == 1) 108 core_tpg_deregister(&tpg->tpg_se_tpg); 109 kfree(tpg); 110 return -1; 111 } 112 113 void iscsit_release_discovery_tpg(void) 114 { 115 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; 116 117 if (!tpg) 118 return; 119 120 core_tpg_deregister(&tpg->tpg_se_tpg); 121 122 kfree(tpg); 123 iscsit_global->discovery_tpg = NULL; 124 } 125 126 struct iscsi_portal_group *iscsit_get_tpg_from_np( 127 struct iscsi_tiqn *tiqn, 128 struct iscsi_np *np, 129 struct iscsi_tpg_np **tpg_np_out) 130 { 131 struct iscsi_portal_group *tpg = NULL; 132 struct iscsi_tpg_np *tpg_np; 133 134 spin_lock(&tiqn->tiqn_tpg_lock); 135 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 136 137 spin_lock(&tpg->tpg_state_lock); 138 if (tpg->tpg_state != TPG_STATE_ACTIVE) { 139 spin_unlock(&tpg->tpg_state_lock); 140 continue; 141 } 142 spin_unlock(&tpg->tpg_state_lock); 143 144 spin_lock(&tpg->tpg_np_lock); 145 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 146 if (tpg_np->tpg_np == np) { 147 *tpg_np_out = tpg_np; 148 kref_get(&tpg_np->tpg_np_kref); 149 spin_unlock(&tpg->tpg_np_lock); 150 spin_unlock(&tiqn->tiqn_tpg_lock); 151 return tpg; 152 } 153 } 154 spin_unlock(&tpg->tpg_np_lock); 155 } 156 spin_unlock(&tiqn->tiqn_tpg_lock); 157 158 return NULL; 159 } 160 161 int iscsit_get_tpg( 162 struct iscsi_portal_group *tpg) 163 { 164 int ret; 165 166 ret = mutex_lock_interruptible(&tpg->tpg_access_lock); 167 return ((ret != 0) || signal_pending(current)) ? -1 : 0; 168 } 169 170 void iscsit_put_tpg(struct iscsi_portal_group *tpg) 171 { 172 mutex_unlock(&tpg->tpg_access_lock); 173 } 174 175 static void iscsit_clear_tpg_np_login_thread( 176 struct iscsi_tpg_np *tpg_np, 177 struct iscsi_portal_group *tpg, 178 bool shutdown) 179 { 180 if (!tpg_np->tpg_np) { 181 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 182 return; 183 } 184 185 if (shutdown) 186 tpg_np->tpg_np->enabled = false; 187 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 188 } 189 190 static void iscsit_clear_tpg_np_login_threads( 191 struct iscsi_portal_group *tpg, 192 bool shutdown) 193 { 194 struct iscsi_tpg_np *tpg_np; 195 196 spin_lock(&tpg->tpg_np_lock); 197 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 198 if (!tpg_np->tpg_np) { 199 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 200 continue; 201 } 202 spin_unlock(&tpg->tpg_np_lock); 203 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); 204 spin_lock(&tpg->tpg_np_lock); 205 } 206 spin_unlock(&tpg->tpg_np_lock); 207 } 208 209 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) 210 { 211 iscsi_print_params(tpg->param_list); 212 } 213 214 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) 215 { 216 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 217 218 a->authentication = TA_AUTHENTICATION; 219 a->login_timeout = TA_LOGIN_TIMEOUT; 220 a->netif_timeout = TA_NETIF_TIMEOUT; 221 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 222 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 223 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 224 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 225 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 226 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 227 a->default_erl = TA_DEFAULT_ERL; 228 a->t10_pi = TA_DEFAULT_T10_PI; 229 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; 230 } 231 232 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 233 { 234 if (tpg->tpg_state != TPG_STATE_FREE) { 235 pr_err("Unable to add iSCSI Target Portal Group: %d" 236 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 237 return -EEXIST; 238 } 239 iscsit_set_default_tpg_attribs(tpg); 240 241 if (iscsi_create_default_params(&tpg->param_list) < 0) 242 goto err_out; 243 244 tpg->tpg_attrib.tpg = tpg; 245 246 spin_lock(&tpg->tpg_state_lock); 247 tpg->tpg_state = TPG_STATE_INACTIVE; 248 spin_unlock(&tpg->tpg_state_lock); 249 250 spin_lock(&tiqn->tiqn_tpg_lock); 251 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 252 tiqn->tiqn_ntpgs++; 253 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 254 tiqn->tiqn, tpg->tpgt); 255 spin_unlock(&tiqn->tiqn_tpg_lock); 256 257 return 0; 258 err_out: 259 if (tpg->param_list) { 260 iscsi_release_param_list(tpg->param_list); 261 tpg->param_list = NULL; 262 } 263 kfree(tpg); 264 return -ENOMEM; 265 } 266 267 int iscsit_tpg_del_portal_group( 268 struct iscsi_tiqn *tiqn, 269 struct iscsi_portal_group *tpg, 270 int force) 271 { 272 u8 old_state = tpg->tpg_state; 273 274 spin_lock(&tpg->tpg_state_lock); 275 tpg->tpg_state = TPG_STATE_INACTIVE; 276 spin_unlock(&tpg->tpg_state_lock); 277 278 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 279 pr_err("Unable to delete iSCSI Target Portal Group:" 280 " %hu while active sessions exist, and force=0\n", 281 tpg->tpgt); 282 tpg->tpg_state = old_state; 283 return -EPERM; 284 } 285 286 core_tpg_clear_object_luns(&tpg->tpg_se_tpg); 287 288 if (tpg->param_list) { 289 iscsi_release_param_list(tpg->param_list); 290 tpg->param_list = NULL; 291 } 292 293 core_tpg_deregister(&tpg->tpg_se_tpg); 294 295 spin_lock(&tpg->tpg_state_lock); 296 tpg->tpg_state = TPG_STATE_FREE; 297 spin_unlock(&tpg->tpg_state_lock); 298 299 spin_lock(&tiqn->tiqn_tpg_lock); 300 tiqn->tiqn_ntpgs--; 301 list_del(&tpg->tpg_list); 302 spin_unlock(&tiqn->tiqn_tpg_lock); 303 304 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 305 tiqn->tiqn, tpg->tpgt); 306 307 kfree(tpg); 308 return 0; 309 } 310 311 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 312 { 313 struct iscsi_param *param; 314 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 315 int ret; 316 317 spin_lock(&tpg->tpg_state_lock); 318 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 319 pr_err("iSCSI target portal group: %hu is already" 320 " active, ignoring request.\n", tpg->tpgt); 321 spin_unlock(&tpg->tpg_state_lock); 322 return -EINVAL; 323 } 324 /* 325 * Make sure that AuthMethod does not contain None as an option 326 * unless explictly disabled. Set the default to CHAP if authentication 327 * is enforced (as per default), and remove the NONE option. 328 */ 329 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 330 if (!param) { 331 spin_unlock(&tpg->tpg_state_lock); 332 return -EINVAL; 333 } 334 335 if (tpg->tpg_attrib.authentication) { 336 if (!strcmp(param->value, NONE)) { 337 ret = iscsi_update_param_value(param, CHAP); 338 if (ret) 339 goto err; 340 } 341 342 ret = iscsit_ta_authentication(tpg, 1); 343 if (ret < 0) 344 goto err; 345 } 346 347 tpg->tpg_state = TPG_STATE_ACTIVE; 348 spin_unlock(&tpg->tpg_state_lock); 349 350 spin_lock(&tiqn->tiqn_tpg_lock); 351 tiqn->tiqn_active_tpgs++; 352 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 353 tpg->tpgt); 354 spin_unlock(&tiqn->tiqn_tpg_lock); 355 356 return 0; 357 358 err: 359 spin_unlock(&tpg->tpg_state_lock); 360 return ret; 361 } 362 363 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 364 { 365 struct iscsi_tiqn *tiqn; 366 u8 old_state = tpg->tpg_state; 367 368 spin_lock(&tpg->tpg_state_lock); 369 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 370 pr_err("iSCSI Target Portal Group: %hu is already" 371 " inactive, ignoring request.\n", tpg->tpgt); 372 spin_unlock(&tpg->tpg_state_lock); 373 return -EINVAL; 374 } 375 tpg->tpg_state = TPG_STATE_INACTIVE; 376 spin_unlock(&tpg->tpg_state_lock); 377 378 iscsit_clear_tpg_np_login_threads(tpg, false); 379 380 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 381 spin_lock(&tpg->tpg_state_lock); 382 tpg->tpg_state = old_state; 383 spin_unlock(&tpg->tpg_state_lock); 384 pr_err("Unable to disable iSCSI Target Portal Group:" 385 " %hu while active sessions exist, and force=0\n", 386 tpg->tpgt); 387 return -EPERM; 388 } 389 390 tiqn = tpg->tpg_tiqn; 391 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 392 return 0; 393 394 spin_lock(&tiqn->tiqn_tpg_lock); 395 tiqn->tiqn_active_tpgs--; 396 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 397 tpg->tpgt); 398 spin_unlock(&tiqn->tiqn_tpg_lock); 399 400 return 0; 401 } 402 403 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 404 struct iscsi_session *sess) 405 { 406 struct se_session *se_sess = sess->se_sess; 407 struct se_node_acl *se_nacl = se_sess->se_node_acl; 408 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 409 se_node_acl); 410 411 return &acl->node_attrib; 412 } 413 414 struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 415 struct iscsi_tpg_np *tpg_np, 416 int network_transport) 417 { 418 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 419 420 spin_lock(&tpg_np->tpg_np_parent_lock); 421 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 422 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 423 if (tpg_np_child->tpg_np->np_network_transport == 424 network_transport) { 425 spin_unlock(&tpg_np->tpg_np_parent_lock); 426 return tpg_np_child; 427 } 428 } 429 spin_unlock(&tpg_np->tpg_np_parent_lock); 430 431 return NULL; 432 } 433 434 static bool iscsit_tpg_check_network_portal( 435 struct iscsi_tiqn *tiqn, 436 struct __kernel_sockaddr_storage *sockaddr, 437 int network_transport) 438 { 439 struct iscsi_portal_group *tpg; 440 struct iscsi_tpg_np *tpg_np; 441 struct iscsi_np *np; 442 bool match = false; 443 444 spin_lock(&tiqn->tiqn_tpg_lock); 445 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 446 447 spin_lock(&tpg->tpg_np_lock); 448 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 449 np = tpg_np->tpg_np; 450 451 match = iscsit_check_np_match(sockaddr, np, 452 network_transport); 453 if (match) 454 break; 455 } 456 spin_unlock(&tpg->tpg_np_lock); 457 } 458 spin_unlock(&tiqn->tiqn_tpg_lock); 459 460 return match; 461 } 462 463 struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 464 struct iscsi_portal_group *tpg, 465 struct __kernel_sockaddr_storage *sockaddr, 466 char *ip_str, 467 struct iscsi_tpg_np *tpg_np_parent, 468 int network_transport) 469 { 470 struct iscsi_np *np; 471 struct iscsi_tpg_np *tpg_np; 472 473 if (!tpg_np_parent) { 474 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 475 network_transport)) { 476 pr_err("Network Portal: %s already exists on a" 477 " different TPG on %s\n", ip_str, 478 tpg->tpg_tiqn->tiqn); 479 return ERR_PTR(-EEXIST); 480 } 481 } 482 483 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 484 if (!tpg_np) { 485 pr_err("Unable to allocate memory for" 486 " struct iscsi_tpg_np.\n"); 487 return ERR_PTR(-ENOMEM); 488 } 489 490 np = iscsit_add_np(sockaddr, ip_str, network_transport); 491 if (IS_ERR(np)) { 492 kfree(tpg_np); 493 return ERR_CAST(np); 494 } 495 496 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 497 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 498 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 499 spin_lock_init(&tpg_np->tpg_np_parent_lock); 500 init_completion(&tpg_np->tpg_np_comp); 501 kref_init(&tpg_np->tpg_np_kref); 502 tpg_np->tpg_np = np; 503 tpg_np->tpg = tpg; 504 505 spin_lock(&tpg->tpg_np_lock); 506 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 507 tpg->num_tpg_nps++; 508 if (tpg->tpg_tiqn) 509 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 510 spin_unlock(&tpg->tpg_np_lock); 511 512 if (tpg_np_parent) { 513 tpg_np->tpg_np_parent = tpg_np_parent; 514 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 515 list_add_tail(&tpg_np->tpg_np_child_list, 516 &tpg_np_parent->tpg_np_parent_list); 517 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 518 } 519 520 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", 521 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 522 np->np_transport->name); 523 524 return tpg_np; 525 } 526 527 static int iscsit_tpg_release_np( 528 struct iscsi_tpg_np *tpg_np, 529 struct iscsi_portal_group *tpg, 530 struct iscsi_np *np) 531 { 532 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 533 534 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", 535 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 536 np->np_transport->name); 537 538 tpg_np->tpg_np = NULL; 539 tpg_np->tpg = NULL; 540 kfree(tpg_np); 541 /* 542 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 543 */ 544 return iscsit_del_np(np); 545 } 546 547 int iscsit_tpg_del_network_portal( 548 struct iscsi_portal_group *tpg, 549 struct iscsi_tpg_np *tpg_np) 550 { 551 struct iscsi_np *np; 552 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 553 int ret = 0; 554 555 np = tpg_np->tpg_np; 556 if (!np) { 557 pr_err("Unable to locate struct iscsi_np from" 558 " struct iscsi_tpg_np\n"); 559 return -EINVAL; 560 } 561 562 if (!tpg_np->tpg_np_parent) { 563 /* 564 * We are the parent tpg network portal. Release all of the 565 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 566 * list first. 567 */ 568 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 569 &tpg_np->tpg_np_parent_list, 570 tpg_np_child_list) { 571 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 572 if (ret < 0) 573 pr_err("iscsit_tpg_del_network_portal()" 574 " failed: %d\n", ret); 575 } 576 } else { 577 /* 578 * We are not the parent ISCSI_TCP tpg network portal. Release 579 * our own network portals from the child list. 580 */ 581 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 582 list_del(&tpg_np->tpg_np_child_list); 583 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 584 } 585 586 spin_lock(&tpg->tpg_np_lock); 587 list_del(&tpg_np->tpg_np_list); 588 tpg->num_tpg_nps--; 589 if (tpg->tpg_tiqn) 590 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 591 spin_unlock(&tpg->tpg_np_lock); 592 593 return iscsit_tpg_release_np(tpg_np, tpg, np); 594 } 595 596 int iscsit_tpg_set_initiator_node_queue_depth( 597 struct iscsi_portal_group *tpg, 598 unsigned char *initiatorname, 599 u32 queue_depth, 600 int force) 601 { 602 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, 603 initiatorname, queue_depth, force); 604 } 605 606 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 607 { 608 unsigned char buf1[256], buf2[256], *none = NULL; 609 int len; 610 struct iscsi_param *param; 611 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 612 613 if ((authentication != 1) && (authentication != 0)) { 614 pr_err("Illegal value for authentication parameter:" 615 " %u, ignoring request.\n", authentication); 616 return -EINVAL; 617 } 618 619 memset(buf1, 0, sizeof(buf1)); 620 memset(buf2, 0, sizeof(buf2)); 621 622 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 623 if (!param) 624 return -EINVAL; 625 626 if (authentication) { 627 snprintf(buf1, sizeof(buf1), "%s", param->value); 628 none = strstr(buf1, NONE); 629 if (!none) 630 goto out; 631 if (!strncmp(none + 4, ",", 1)) { 632 if (!strcmp(buf1, none)) 633 sprintf(buf2, "%s", none+5); 634 else { 635 none--; 636 *none = '\0'; 637 len = sprintf(buf2, "%s", buf1); 638 none += 5; 639 sprintf(buf2 + len, "%s", none); 640 } 641 } else { 642 none--; 643 *none = '\0'; 644 sprintf(buf2, "%s", buf1); 645 } 646 if (iscsi_update_param_value(param, buf2) < 0) 647 return -EINVAL; 648 } else { 649 snprintf(buf1, sizeof(buf1), "%s", param->value); 650 none = strstr(buf1, NONE); 651 if (none) 652 goto out; 653 strncat(buf1, ",", strlen(",")); 654 strncat(buf1, NONE, strlen(NONE)); 655 if (iscsi_update_param_value(param, buf1) < 0) 656 return -EINVAL; 657 } 658 659 out: 660 a->authentication = authentication; 661 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 662 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 663 664 return 0; 665 } 666 667 int iscsit_ta_login_timeout( 668 struct iscsi_portal_group *tpg, 669 u32 login_timeout) 670 { 671 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 672 673 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 674 pr_err("Requested Login Timeout %u larger than maximum" 675 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 676 return -EINVAL; 677 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 678 pr_err("Requested Logout Timeout %u smaller than" 679 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 680 return -EINVAL; 681 } 682 683 a->login_timeout = login_timeout; 684 pr_debug("Set Logout Timeout to %u for Target Portal Group" 685 " %hu\n", a->login_timeout, tpg->tpgt); 686 687 return 0; 688 } 689 690 int iscsit_ta_netif_timeout( 691 struct iscsi_portal_group *tpg, 692 u32 netif_timeout) 693 { 694 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 695 696 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 697 pr_err("Requested Network Interface Timeout %u larger" 698 " than maximum %u\n", netif_timeout, 699 TA_NETIF_TIMEOUT_MAX); 700 return -EINVAL; 701 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 702 pr_err("Requested Network Interface Timeout %u smaller" 703 " than minimum %u\n", netif_timeout, 704 TA_NETIF_TIMEOUT_MIN); 705 return -EINVAL; 706 } 707 708 a->netif_timeout = netif_timeout; 709 pr_debug("Set Network Interface Timeout to %u for" 710 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 711 712 return 0; 713 } 714 715 int iscsit_ta_generate_node_acls( 716 struct iscsi_portal_group *tpg, 717 u32 flag) 718 { 719 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 720 721 if ((flag != 0) && (flag != 1)) { 722 pr_err("Illegal value %d\n", flag); 723 return -EINVAL; 724 } 725 726 a->generate_node_acls = flag; 727 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 728 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 729 730 if (flag == 1 && a->cache_dynamic_acls == 0) { 731 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 732 "generate_node_acls=1\n"); 733 a->cache_dynamic_acls = 1; 734 } 735 736 return 0; 737 } 738 739 int iscsit_ta_default_cmdsn_depth( 740 struct iscsi_portal_group *tpg, 741 u32 tcq_depth) 742 { 743 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 744 745 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 746 pr_err("Requested Default Queue Depth: %u larger" 747 " than maximum %u\n", tcq_depth, 748 TA_DEFAULT_CMDSN_DEPTH_MAX); 749 return -EINVAL; 750 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 751 pr_err("Requested Default Queue Depth: %u smaller" 752 " than minimum %u\n", tcq_depth, 753 TA_DEFAULT_CMDSN_DEPTH_MIN); 754 return -EINVAL; 755 } 756 757 a->default_cmdsn_depth = tcq_depth; 758 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 759 tpg->tpgt, a->default_cmdsn_depth); 760 761 return 0; 762 } 763 764 int iscsit_ta_cache_dynamic_acls( 765 struct iscsi_portal_group *tpg, 766 u32 flag) 767 { 768 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 769 770 if ((flag != 0) && (flag != 1)) { 771 pr_err("Illegal value %d\n", flag); 772 return -EINVAL; 773 } 774 775 if (a->generate_node_acls == 1 && flag == 0) { 776 pr_debug("Skipping cache_dynamic_acls=0 when" 777 " generate_node_acls=1\n"); 778 return 0; 779 } 780 781 a->cache_dynamic_acls = flag; 782 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 783 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 784 "Enabled" : "Disabled"); 785 786 return 0; 787 } 788 789 int iscsit_ta_demo_mode_write_protect( 790 struct iscsi_portal_group *tpg, 791 u32 flag) 792 { 793 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 794 795 if ((flag != 0) && (flag != 1)) { 796 pr_err("Illegal value %d\n", flag); 797 return -EINVAL; 798 } 799 800 a->demo_mode_write_protect = flag; 801 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 802 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 803 804 return 0; 805 } 806 807 int iscsit_ta_prod_mode_write_protect( 808 struct iscsi_portal_group *tpg, 809 u32 flag) 810 { 811 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 812 813 if ((flag != 0) && (flag != 1)) { 814 pr_err("Illegal value %d\n", flag); 815 return -EINVAL; 816 } 817 818 a->prod_mode_write_protect = flag; 819 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 820 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 821 "ON" : "OFF"); 822 823 return 0; 824 } 825 826 int iscsit_ta_demo_mode_discovery( 827 struct iscsi_portal_group *tpg, 828 u32 flag) 829 { 830 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 831 832 if ((flag != 0) && (flag != 1)) { 833 pr_err("Illegal value %d\n", flag); 834 return -EINVAL; 835 } 836 837 a->demo_mode_discovery = flag; 838 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 839 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 840 "ON" : "OFF"); 841 842 return 0; 843 } 844 845 int iscsit_ta_default_erl( 846 struct iscsi_portal_group *tpg, 847 u32 default_erl) 848 { 849 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 850 851 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 852 pr_err("Illegal value for default_erl: %u\n", default_erl); 853 return -EINVAL; 854 } 855 856 a->default_erl = default_erl; 857 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 858 859 return 0; 860 } 861 862 int iscsit_ta_t10_pi( 863 struct iscsi_portal_group *tpg, 864 u32 flag) 865 { 866 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 867 868 if ((flag != 0) && (flag != 1)) { 869 pr_err("Illegal value %d\n", flag); 870 return -EINVAL; 871 } 872 873 a->t10_pi = flag; 874 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 875 " %s\n", tpg->tpgt, (a->t10_pi) ? 876 "ON" : "OFF"); 877 878 return 0; 879 } 880 881 int iscsit_ta_fabric_prot_type( 882 struct iscsi_portal_group *tpg, 883 u32 prot_type) 884 { 885 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 886 887 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 888 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 889 return -EINVAL; 890 } 891 892 a->fabric_prot_type = prot_type; 893 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 894 tpg->tpgt, prot_type); 895 896 return 0; 897 } 898