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_FREE) { 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 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 188 } 189 190 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 } 227 228 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 229 { 230 if (tpg->tpg_state != TPG_STATE_FREE) { 231 pr_err("Unable to add iSCSI Target Portal Group: %d" 232 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 233 return -EEXIST; 234 } 235 iscsit_set_default_tpg_attribs(tpg); 236 237 if (iscsi_create_default_params(&tpg->param_list) < 0) 238 goto err_out; 239 240 ISCSI_TPG_ATTRIB(tpg)->tpg = tpg; 241 242 spin_lock(&tpg->tpg_state_lock); 243 tpg->tpg_state = TPG_STATE_INACTIVE; 244 spin_unlock(&tpg->tpg_state_lock); 245 246 spin_lock(&tiqn->tiqn_tpg_lock); 247 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 248 tiqn->tiqn_ntpgs++; 249 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 250 tiqn->tiqn, tpg->tpgt); 251 spin_unlock(&tiqn->tiqn_tpg_lock); 252 253 return 0; 254 err_out: 255 if (tpg->param_list) { 256 iscsi_release_param_list(tpg->param_list); 257 tpg->param_list = NULL; 258 } 259 kfree(tpg); 260 return -ENOMEM; 261 } 262 263 int iscsit_tpg_del_portal_group( 264 struct iscsi_tiqn *tiqn, 265 struct iscsi_portal_group *tpg, 266 int force) 267 { 268 u8 old_state = tpg->tpg_state; 269 270 spin_lock(&tpg->tpg_state_lock); 271 tpg->tpg_state = TPG_STATE_INACTIVE; 272 spin_unlock(&tpg->tpg_state_lock); 273 274 iscsit_clear_tpg_np_login_threads(tpg, true); 275 276 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 277 pr_err("Unable to delete iSCSI Target Portal Group:" 278 " %hu while active sessions exist, and force=0\n", 279 tpg->tpgt); 280 tpg->tpg_state = old_state; 281 return -EPERM; 282 } 283 284 core_tpg_clear_object_luns(&tpg->tpg_se_tpg); 285 286 if (tpg->param_list) { 287 iscsi_release_param_list(tpg->param_list); 288 tpg->param_list = NULL; 289 } 290 291 core_tpg_deregister(&tpg->tpg_se_tpg); 292 293 spin_lock(&tpg->tpg_state_lock); 294 tpg->tpg_state = TPG_STATE_FREE; 295 spin_unlock(&tpg->tpg_state_lock); 296 297 spin_lock(&tiqn->tiqn_tpg_lock); 298 tiqn->tiqn_ntpgs--; 299 list_del(&tpg->tpg_list); 300 spin_unlock(&tiqn->tiqn_tpg_lock); 301 302 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 303 tiqn->tiqn, tpg->tpgt); 304 305 kfree(tpg); 306 return 0; 307 } 308 309 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 310 { 311 struct iscsi_param *param; 312 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 313 int ret; 314 315 spin_lock(&tpg->tpg_state_lock); 316 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 317 pr_err("iSCSI target portal group: %hu is already" 318 " active, ignoring request.\n", tpg->tpgt); 319 spin_unlock(&tpg->tpg_state_lock); 320 return -EINVAL; 321 } 322 /* 323 * Make sure that AuthMethod does not contain None as an option 324 * unless explictly disabled. Set the default to CHAP if authentication 325 * is enforced (as per default), and remove the NONE option. 326 */ 327 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 328 if (!param) { 329 spin_unlock(&tpg->tpg_state_lock); 330 return -EINVAL; 331 } 332 333 if (ISCSI_TPG_ATTRIB(tpg)->authentication) { 334 if (!strcmp(param->value, NONE)) { 335 ret = iscsi_update_param_value(param, CHAP); 336 if (ret) 337 goto err; 338 } 339 340 ret = iscsit_ta_authentication(tpg, 1); 341 if (ret < 0) 342 goto err; 343 } 344 345 tpg->tpg_state = TPG_STATE_ACTIVE; 346 spin_unlock(&tpg->tpg_state_lock); 347 348 spin_lock(&tiqn->tiqn_tpg_lock); 349 tiqn->tiqn_active_tpgs++; 350 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 351 tpg->tpgt); 352 spin_unlock(&tiqn->tiqn_tpg_lock); 353 354 return 0; 355 356 err: 357 spin_unlock(&tpg->tpg_state_lock); 358 return ret; 359 } 360 361 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 362 { 363 struct iscsi_tiqn *tiqn; 364 u8 old_state = tpg->tpg_state; 365 366 spin_lock(&tpg->tpg_state_lock); 367 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 368 pr_err("iSCSI Target Portal Group: %hu is already" 369 " inactive, ignoring request.\n", tpg->tpgt); 370 spin_unlock(&tpg->tpg_state_lock); 371 return -EINVAL; 372 } 373 tpg->tpg_state = TPG_STATE_INACTIVE; 374 spin_unlock(&tpg->tpg_state_lock); 375 376 iscsit_clear_tpg_np_login_threads(tpg, false); 377 378 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 379 spin_lock(&tpg->tpg_state_lock); 380 tpg->tpg_state = old_state; 381 spin_unlock(&tpg->tpg_state_lock); 382 pr_err("Unable to disable iSCSI Target Portal Group:" 383 " %hu while active sessions exist, and force=0\n", 384 tpg->tpgt); 385 return -EPERM; 386 } 387 388 tiqn = tpg->tpg_tiqn; 389 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 390 return 0; 391 392 spin_lock(&tiqn->tiqn_tpg_lock); 393 tiqn->tiqn_active_tpgs--; 394 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 395 tpg->tpgt); 396 spin_unlock(&tiqn->tiqn_tpg_lock); 397 398 return 0; 399 } 400 401 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 402 struct iscsi_session *sess) 403 { 404 struct se_session *se_sess = sess->se_sess; 405 struct se_node_acl *se_nacl = se_sess->se_node_acl; 406 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 407 se_node_acl); 408 409 return &acl->node_attrib; 410 } 411 412 struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 413 struct iscsi_tpg_np *tpg_np, 414 int network_transport) 415 { 416 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 417 418 spin_lock(&tpg_np->tpg_np_parent_lock); 419 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 420 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 421 if (tpg_np_child->tpg_np->np_network_transport == 422 network_transport) { 423 spin_unlock(&tpg_np->tpg_np_parent_lock); 424 return tpg_np_child; 425 } 426 } 427 spin_unlock(&tpg_np->tpg_np_parent_lock); 428 429 return NULL; 430 } 431 432 static bool iscsit_tpg_check_network_portal( 433 struct iscsi_tiqn *tiqn, 434 struct __kernel_sockaddr_storage *sockaddr, 435 int network_transport) 436 { 437 struct iscsi_portal_group *tpg; 438 struct iscsi_tpg_np *tpg_np; 439 struct iscsi_np *np; 440 bool match = false; 441 442 spin_lock(&tiqn->tiqn_tpg_lock); 443 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 444 445 spin_lock(&tpg->tpg_np_lock); 446 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 447 np = tpg_np->tpg_np; 448 449 match = iscsit_check_np_match(sockaddr, np, 450 network_transport); 451 if (match == true) 452 break; 453 } 454 spin_unlock(&tpg->tpg_np_lock); 455 } 456 spin_unlock(&tiqn->tiqn_tpg_lock); 457 458 return match; 459 } 460 461 struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 462 struct iscsi_portal_group *tpg, 463 struct __kernel_sockaddr_storage *sockaddr, 464 char *ip_str, 465 struct iscsi_tpg_np *tpg_np_parent, 466 int network_transport) 467 { 468 struct iscsi_np *np; 469 struct iscsi_tpg_np *tpg_np; 470 471 if (!tpg_np_parent) { 472 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 473 network_transport) == true) { 474 pr_err("Network Portal: %s already exists on a" 475 " different TPG on %s\n", ip_str, 476 tpg->tpg_tiqn->tiqn); 477 return ERR_PTR(-EEXIST); 478 } 479 } 480 481 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 482 if (!tpg_np) { 483 pr_err("Unable to allocate memory for" 484 " struct iscsi_tpg_np.\n"); 485 return ERR_PTR(-ENOMEM); 486 } 487 488 np = iscsit_add_np(sockaddr, ip_str, network_transport); 489 if (IS_ERR(np)) { 490 kfree(tpg_np); 491 return ERR_CAST(np); 492 } 493 494 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 495 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 496 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 497 spin_lock_init(&tpg_np->tpg_np_parent_lock); 498 init_completion(&tpg_np->tpg_np_comp); 499 kref_init(&tpg_np->tpg_np_kref); 500 tpg_np->tpg_np = np; 501 tpg_np->tpg = tpg; 502 503 spin_lock(&tpg->tpg_np_lock); 504 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 505 tpg->num_tpg_nps++; 506 if (tpg->tpg_tiqn) 507 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 508 spin_unlock(&tpg->tpg_np_lock); 509 510 if (tpg_np_parent) { 511 tpg_np->tpg_np_parent = tpg_np_parent; 512 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 513 list_add_tail(&tpg_np->tpg_np_child_list, 514 &tpg_np_parent->tpg_np_parent_list); 515 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 516 } 517 518 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", 519 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 520 np->np_transport->name); 521 522 return tpg_np; 523 } 524 525 static int iscsit_tpg_release_np( 526 struct iscsi_tpg_np *tpg_np, 527 struct iscsi_portal_group *tpg, 528 struct iscsi_np *np) 529 { 530 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 531 532 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", 533 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 534 np->np_transport->name); 535 536 tpg_np->tpg_np = NULL; 537 tpg_np->tpg = NULL; 538 kfree(tpg_np); 539 /* 540 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 541 */ 542 return iscsit_del_np(np); 543 } 544 545 int iscsit_tpg_del_network_portal( 546 struct iscsi_portal_group *tpg, 547 struct iscsi_tpg_np *tpg_np) 548 { 549 struct iscsi_np *np; 550 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 551 int ret = 0; 552 553 np = tpg_np->tpg_np; 554 if (!np) { 555 pr_err("Unable to locate struct iscsi_np from" 556 " struct iscsi_tpg_np\n"); 557 return -EINVAL; 558 } 559 560 if (!tpg_np->tpg_np_parent) { 561 /* 562 * We are the parent tpg network portal. Release all of the 563 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 564 * list first. 565 */ 566 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 567 &tpg_np->tpg_np_parent_list, 568 tpg_np_child_list) { 569 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 570 if (ret < 0) 571 pr_err("iscsit_tpg_del_network_portal()" 572 " failed: %d\n", ret); 573 } 574 } else { 575 /* 576 * We are not the parent ISCSI_TCP tpg network portal. Release 577 * our own network portals from the child list. 578 */ 579 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 580 list_del(&tpg_np->tpg_np_child_list); 581 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 582 } 583 584 spin_lock(&tpg->tpg_np_lock); 585 list_del(&tpg_np->tpg_np_list); 586 tpg->num_tpg_nps--; 587 if (tpg->tpg_tiqn) 588 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 589 spin_unlock(&tpg->tpg_np_lock); 590 591 return iscsit_tpg_release_np(tpg_np, tpg, np); 592 } 593 594 int iscsit_tpg_set_initiator_node_queue_depth( 595 struct iscsi_portal_group *tpg, 596 unsigned char *initiatorname, 597 u32 queue_depth, 598 int force) 599 { 600 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, 601 initiatorname, queue_depth, force); 602 } 603 604 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 605 { 606 unsigned char buf1[256], buf2[256], *none = NULL; 607 int len; 608 struct iscsi_param *param; 609 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 610 611 if ((authentication != 1) && (authentication != 0)) { 612 pr_err("Illegal value for authentication parameter:" 613 " %u, ignoring request.\n", authentication); 614 return -EINVAL; 615 } 616 617 memset(buf1, 0, sizeof(buf1)); 618 memset(buf2, 0, sizeof(buf2)); 619 620 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 621 if (!param) 622 return -EINVAL; 623 624 if (authentication) { 625 snprintf(buf1, sizeof(buf1), "%s", param->value); 626 none = strstr(buf1, NONE); 627 if (!none) 628 goto out; 629 if (!strncmp(none + 4, ",", 1)) { 630 if (!strcmp(buf1, none)) 631 sprintf(buf2, "%s", none+5); 632 else { 633 none--; 634 *none = '\0'; 635 len = sprintf(buf2, "%s", buf1); 636 none += 5; 637 sprintf(buf2 + len, "%s", none); 638 } 639 } else { 640 none--; 641 *none = '\0'; 642 sprintf(buf2, "%s", buf1); 643 } 644 if (iscsi_update_param_value(param, buf2) < 0) 645 return -EINVAL; 646 } else { 647 snprintf(buf1, sizeof(buf1), "%s", param->value); 648 none = strstr(buf1, NONE); 649 if (none) 650 goto out; 651 strncat(buf1, ",", strlen(",")); 652 strncat(buf1, NONE, strlen(NONE)); 653 if (iscsi_update_param_value(param, buf1) < 0) 654 return -EINVAL; 655 } 656 657 out: 658 a->authentication = authentication; 659 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 660 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 661 662 return 0; 663 } 664 665 int iscsit_ta_login_timeout( 666 struct iscsi_portal_group *tpg, 667 u32 login_timeout) 668 { 669 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 670 671 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 672 pr_err("Requested Login Timeout %u larger than maximum" 673 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 674 return -EINVAL; 675 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 676 pr_err("Requested Logout Timeout %u smaller than" 677 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 678 return -EINVAL; 679 } 680 681 a->login_timeout = login_timeout; 682 pr_debug("Set Logout Timeout to %u for Target Portal Group" 683 " %hu\n", a->login_timeout, tpg->tpgt); 684 685 return 0; 686 } 687 688 int iscsit_ta_netif_timeout( 689 struct iscsi_portal_group *tpg, 690 u32 netif_timeout) 691 { 692 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 693 694 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 695 pr_err("Requested Network Interface Timeout %u larger" 696 " than maximum %u\n", netif_timeout, 697 TA_NETIF_TIMEOUT_MAX); 698 return -EINVAL; 699 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 700 pr_err("Requested Network Interface Timeout %u smaller" 701 " than minimum %u\n", netif_timeout, 702 TA_NETIF_TIMEOUT_MIN); 703 return -EINVAL; 704 } 705 706 a->netif_timeout = netif_timeout; 707 pr_debug("Set Network Interface Timeout to %u for" 708 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 709 710 return 0; 711 } 712 713 int iscsit_ta_generate_node_acls( 714 struct iscsi_portal_group *tpg, 715 u32 flag) 716 { 717 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 718 719 if ((flag != 0) && (flag != 1)) { 720 pr_err("Illegal value %d\n", flag); 721 return -EINVAL; 722 } 723 724 a->generate_node_acls = flag; 725 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 726 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 727 728 if (flag == 1 && a->cache_dynamic_acls == 0) { 729 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 730 "generate_node_acls=1\n"); 731 a->cache_dynamic_acls = 1; 732 } 733 734 return 0; 735 } 736 737 int iscsit_ta_default_cmdsn_depth( 738 struct iscsi_portal_group *tpg, 739 u32 tcq_depth) 740 { 741 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 742 743 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 744 pr_err("Requested Default Queue Depth: %u larger" 745 " than maximum %u\n", tcq_depth, 746 TA_DEFAULT_CMDSN_DEPTH_MAX); 747 return -EINVAL; 748 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 749 pr_err("Requested Default Queue Depth: %u smaller" 750 " than minimum %u\n", tcq_depth, 751 TA_DEFAULT_CMDSN_DEPTH_MIN); 752 return -EINVAL; 753 } 754 755 a->default_cmdsn_depth = tcq_depth; 756 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 757 tpg->tpgt, a->default_cmdsn_depth); 758 759 return 0; 760 } 761 762 int iscsit_ta_cache_dynamic_acls( 763 struct iscsi_portal_group *tpg, 764 u32 flag) 765 { 766 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 767 768 if ((flag != 0) && (flag != 1)) { 769 pr_err("Illegal value %d\n", flag); 770 return -EINVAL; 771 } 772 773 if (a->generate_node_acls == 1 && flag == 0) { 774 pr_debug("Skipping cache_dynamic_acls=0 when" 775 " generate_node_acls=1\n"); 776 return 0; 777 } 778 779 a->cache_dynamic_acls = flag; 780 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 781 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 782 "Enabled" : "Disabled"); 783 784 return 0; 785 } 786 787 int iscsit_ta_demo_mode_write_protect( 788 struct iscsi_portal_group *tpg, 789 u32 flag) 790 { 791 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 792 793 if ((flag != 0) && (flag != 1)) { 794 pr_err("Illegal value %d\n", flag); 795 return -EINVAL; 796 } 797 798 a->demo_mode_write_protect = flag; 799 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 800 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 801 802 return 0; 803 } 804 805 int iscsit_ta_prod_mode_write_protect( 806 struct iscsi_portal_group *tpg, 807 u32 flag) 808 { 809 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 810 811 if ((flag != 0) && (flag != 1)) { 812 pr_err("Illegal value %d\n", flag); 813 return -EINVAL; 814 } 815 816 a->prod_mode_write_protect = flag; 817 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 818 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 819 "ON" : "OFF"); 820 821 return 0; 822 } 823