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 tpg_np->tpg = tpg; 505 506 spin_lock(&tpg->tpg_np_lock); 507 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 508 tpg->num_tpg_nps++; 509 if (tpg->tpg_tiqn) 510 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 511 spin_unlock(&tpg->tpg_np_lock); 512 513 if (tpg_np_parent) { 514 tpg_np->tpg_np_parent = tpg_np_parent; 515 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 516 list_add_tail(&tpg_np->tpg_np_child_list, 517 &tpg_np_parent->tpg_np_parent_list); 518 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 519 } 520 521 pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", 522 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 523 np->np_transport->name); 524 525 return tpg_np; 526 } 527 528 static int iscsit_tpg_release_np( 529 struct iscsi_tpg_np *tpg_np, 530 struct iscsi_portal_group *tpg, 531 struct iscsi_np *np) 532 { 533 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 534 535 pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", 536 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, 537 np->np_transport->name); 538 539 tpg_np->tpg_np = NULL; 540 tpg_np->tpg = NULL; 541 kfree(tpg_np); 542 /* 543 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 544 */ 545 return iscsit_del_np(np); 546 } 547 548 int iscsit_tpg_del_network_portal( 549 struct iscsi_portal_group *tpg, 550 struct iscsi_tpg_np *tpg_np) 551 { 552 struct iscsi_np *np; 553 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 554 int ret = 0; 555 556 np = tpg_np->tpg_np; 557 if (!np) { 558 pr_err("Unable to locate struct iscsi_np from" 559 " struct iscsi_tpg_np\n"); 560 return -EINVAL; 561 } 562 563 if (!tpg_np->tpg_np_parent) { 564 /* 565 * We are the parent tpg network portal. Release all of the 566 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 567 * list first. 568 */ 569 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 570 &tpg_np->tpg_np_parent_list, 571 tpg_np_child_list) { 572 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 573 if (ret < 0) 574 pr_err("iscsit_tpg_del_network_portal()" 575 " failed: %d\n", ret); 576 } 577 } else { 578 /* 579 * We are not the parent ISCSI_TCP tpg network portal. Release 580 * our own network portals from the child list. 581 */ 582 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 583 list_del(&tpg_np->tpg_np_child_list); 584 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 585 } 586 587 spin_lock(&tpg->tpg_np_lock); 588 list_del(&tpg_np->tpg_np_list); 589 tpg->num_tpg_nps--; 590 if (tpg->tpg_tiqn) 591 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 592 spin_unlock(&tpg->tpg_np_lock); 593 594 return iscsit_tpg_release_np(tpg_np, tpg, np); 595 } 596 597 int iscsit_tpg_set_initiator_node_queue_depth( 598 struct iscsi_portal_group *tpg, 599 unsigned char *initiatorname, 600 u32 queue_depth, 601 int force) 602 { 603 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, 604 initiatorname, queue_depth, force); 605 } 606 607 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 608 { 609 unsigned char buf1[256], buf2[256], *none = NULL; 610 int len; 611 struct iscsi_param *param; 612 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 613 614 if ((authentication != 1) && (authentication != 0)) { 615 pr_err("Illegal value for authentication parameter:" 616 " %u, ignoring request.\n", authentication); 617 return -EINVAL; 618 } 619 620 memset(buf1, 0, sizeof(buf1)); 621 memset(buf2, 0, sizeof(buf2)); 622 623 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 624 if (!param) 625 return -EINVAL; 626 627 if (authentication) { 628 snprintf(buf1, sizeof(buf1), "%s", param->value); 629 none = strstr(buf1, NONE); 630 if (!none) 631 goto out; 632 if (!strncmp(none + 4, ",", 1)) { 633 if (!strcmp(buf1, none)) 634 sprintf(buf2, "%s", none+5); 635 else { 636 none--; 637 *none = '\0'; 638 len = sprintf(buf2, "%s", buf1); 639 none += 5; 640 sprintf(buf2 + len, "%s", none); 641 } 642 } else { 643 none--; 644 *none = '\0'; 645 sprintf(buf2, "%s", buf1); 646 } 647 if (iscsi_update_param_value(param, buf2) < 0) 648 return -EINVAL; 649 } else { 650 snprintf(buf1, sizeof(buf1), "%s", param->value); 651 none = strstr(buf1, NONE); 652 if (none) 653 goto out; 654 strncat(buf1, ",", strlen(",")); 655 strncat(buf1, NONE, strlen(NONE)); 656 if (iscsi_update_param_value(param, buf1) < 0) 657 return -EINVAL; 658 } 659 660 out: 661 a->authentication = authentication; 662 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 663 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 664 665 return 0; 666 } 667 668 int iscsit_ta_login_timeout( 669 struct iscsi_portal_group *tpg, 670 u32 login_timeout) 671 { 672 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 673 674 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 675 pr_err("Requested Login Timeout %u larger than maximum" 676 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 677 return -EINVAL; 678 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 679 pr_err("Requested Logout Timeout %u smaller than" 680 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 681 return -EINVAL; 682 } 683 684 a->login_timeout = login_timeout; 685 pr_debug("Set Logout Timeout to %u for Target Portal Group" 686 " %hu\n", a->login_timeout, tpg->tpgt); 687 688 return 0; 689 } 690 691 int iscsit_ta_netif_timeout( 692 struct iscsi_portal_group *tpg, 693 u32 netif_timeout) 694 { 695 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 696 697 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 698 pr_err("Requested Network Interface Timeout %u larger" 699 " than maximum %u\n", netif_timeout, 700 TA_NETIF_TIMEOUT_MAX); 701 return -EINVAL; 702 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 703 pr_err("Requested Network Interface Timeout %u smaller" 704 " than minimum %u\n", netif_timeout, 705 TA_NETIF_TIMEOUT_MIN); 706 return -EINVAL; 707 } 708 709 a->netif_timeout = netif_timeout; 710 pr_debug("Set Network Interface Timeout to %u for" 711 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 712 713 return 0; 714 } 715 716 int iscsit_ta_generate_node_acls( 717 struct iscsi_portal_group *tpg, 718 u32 flag) 719 { 720 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 721 722 if ((flag != 0) && (flag != 1)) { 723 pr_err("Illegal value %d\n", flag); 724 return -EINVAL; 725 } 726 727 a->generate_node_acls = flag; 728 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 729 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 730 731 if (flag == 1 && a->cache_dynamic_acls == 0) { 732 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 733 "generate_node_acls=1\n"); 734 a->cache_dynamic_acls = 1; 735 } 736 737 return 0; 738 } 739 740 int iscsit_ta_default_cmdsn_depth( 741 struct iscsi_portal_group *tpg, 742 u32 tcq_depth) 743 { 744 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 745 746 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 747 pr_err("Requested Default Queue Depth: %u larger" 748 " than maximum %u\n", tcq_depth, 749 TA_DEFAULT_CMDSN_DEPTH_MAX); 750 return -EINVAL; 751 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 752 pr_err("Requested Default Queue Depth: %u smaller" 753 " than minimum %u\n", tcq_depth, 754 TA_DEFAULT_CMDSN_DEPTH_MIN); 755 return -EINVAL; 756 } 757 758 a->default_cmdsn_depth = tcq_depth; 759 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 760 tpg->tpgt, a->default_cmdsn_depth); 761 762 return 0; 763 } 764 765 int iscsit_ta_cache_dynamic_acls( 766 struct iscsi_portal_group *tpg, 767 u32 flag) 768 { 769 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 770 771 if ((flag != 0) && (flag != 1)) { 772 pr_err("Illegal value %d\n", flag); 773 return -EINVAL; 774 } 775 776 if (a->generate_node_acls == 1 && flag == 0) { 777 pr_debug("Skipping cache_dynamic_acls=0 when" 778 " generate_node_acls=1\n"); 779 return 0; 780 } 781 782 a->cache_dynamic_acls = flag; 783 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 784 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 785 "Enabled" : "Disabled"); 786 787 return 0; 788 } 789 790 int iscsit_ta_demo_mode_write_protect( 791 struct iscsi_portal_group *tpg, 792 u32 flag) 793 { 794 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 795 796 if ((flag != 0) && (flag != 1)) { 797 pr_err("Illegal value %d\n", flag); 798 return -EINVAL; 799 } 800 801 a->demo_mode_write_protect = flag; 802 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 803 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 804 805 return 0; 806 } 807 808 int iscsit_ta_prod_mode_write_protect( 809 struct iscsi_portal_group *tpg, 810 u32 flag) 811 { 812 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 813 814 if ((flag != 0) && (flag != 1)) { 815 pr_err("Illegal value %d\n", flag); 816 return -EINVAL; 817 } 818 819 a->prod_mode_write_protect = flag; 820 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 821 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 822 "ON" : "OFF"); 823 824 return 0; 825 } 826 827 int iscsit_ta_demo_mode_discovery( 828 struct iscsi_portal_group *tpg, 829 u32 flag) 830 { 831 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 832 833 if ((flag != 0) && (flag != 1)) { 834 pr_err("Illegal value %d\n", flag); 835 return -EINVAL; 836 } 837 838 a->demo_mode_discovery = flag; 839 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 840 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 841 "ON" : "OFF"); 842 843 return 0; 844 } 845 846 int iscsit_ta_default_erl( 847 struct iscsi_portal_group *tpg, 848 u32 default_erl) 849 { 850 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 851 852 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 853 pr_err("Illegal value for default_erl: %u\n", default_erl); 854 return -EINVAL; 855 } 856 857 a->default_erl = default_erl; 858 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 859 860 return 0; 861 } 862 863 int iscsit_ta_t10_pi( 864 struct iscsi_portal_group *tpg, 865 u32 flag) 866 { 867 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 868 869 if ((flag != 0) && (flag != 1)) { 870 pr_err("Illegal value %d\n", flag); 871 return -EINVAL; 872 } 873 874 a->t10_pi = flag; 875 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 876 " %s\n", tpg->tpgt, (a->t10_pi) ? 877 "ON" : "OFF"); 878 879 return 0; 880 } 881