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