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 34struct 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 57static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); 58 59int 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; 106out: 107 if (tpg->sid == 1) 108 core_tpg_deregister(&tpg->tpg_se_tpg); 109 kfree(tpg); 110 return -1; 111} 112 113void 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 126struct 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 161int iscsit_get_tpg( 162 struct iscsi_portal_group *tpg) 163{ 164 return mutex_lock_interruptible(&tpg->tpg_access_lock); 165} 166 167void iscsit_put_tpg(struct iscsi_portal_group *tpg) 168{ 169 mutex_unlock(&tpg->tpg_access_lock); 170} 171 172static void iscsit_clear_tpg_np_login_thread( 173 struct iscsi_tpg_np *tpg_np, 174 struct iscsi_portal_group *tpg, 175 bool shutdown) 176{ 177 if (!tpg_np->tpg_np) { 178 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 179 return; 180 } 181 182 if (shutdown) 183 tpg_np->tpg_np->enabled = false; 184 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 185} 186 187static void iscsit_clear_tpg_np_login_threads( 188 struct iscsi_portal_group *tpg, 189 bool shutdown) 190{ 191 struct iscsi_tpg_np *tpg_np; 192 193 spin_lock(&tpg->tpg_np_lock); 194 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 195 if (!tpg_np->tpg_np) { 196 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 197 continue; 198 } 199 spin_unlock(&tpg->tpg_np_lock); 200 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); 201 spin_lock(&tpg->tpg_np_lock); 202 } 203 spin_unlock(&tpg->tpg_np_lock); 204} 205 206void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) 207{ 208 iscsi_print_params(tpg->param_list); 209} 210 211static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) 212{ 213 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 214 215 a->authentication = TA_AUTHENTICATION; 216 a->login_timeout = TA_LOGIN_TIMEOUT; 217 a->netif_timeout = TA_NETIF_TIMEOUT; 218 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 219 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 220 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 221 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 222 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 223 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 224 a->default_erl = TA_DEFAULT_ERL; 225 a->t10_pi = TA_DEFAULT_T10_PI; 226 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; 227} 228 229int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 230{ 231 if (tpg->tpg_state != TPG_STATE_FREE) { 232 pr_err("Unable to add iSCSI Target Portal Group: %d" 233 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 234 return -EEXIST; 235 } 236 iscsit_set_default_tpg_attribs(tpg); 237 238 if (iscsi_create_default_params(&tpg->param_list) < 0) 239 goto err_out; 240 241 tpg->tpg_attrib.tpg = tpg; 242 243 spin_lock(&tpg->tpg_state_lock); 244 tpg->tpg_state = TPG_STATE_INACTIVE; 245 spin_unlock(&tpg->tpg_state_lock); 246 247 spin_lock(&tiqn->tiqn_tpg_lock); 248 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 249 tiqn->tiqn_ntpgs++; 250 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 251 tiqn->tiqn, tpg->tpgt); 252 spin_unlock(&tiqn->tiqn_tpg_lock); 253 254 return 0; 255err_out: 256 if (tpg->param_list) { 257 iscsi_release_param_list(tpg->param_list); 258 tpg->param_list = NULL; 259 } 260 kfree(tpg); 261 return -ENOMEM; 262} 263 264int iscsit_tpg_del_portal_group( 265 struct iscsi_tiqn *tiqn, 266 struct iscsi_portal_group *tpg, 267 int force) 268{ 269 u8 old_state = tpg->tpg_state; 270 271 spin_lock(&tpg->tpg_state_lock); 272 tpg->tpg_state = TPG_STATE_INACTIVE; 273 spin_unlock(&tpg->tpg_state_lock); 274 275 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 276 pr_err("Unable to delete iSCSI Target Portal Group:" 277 " %hu while active sessions exist, and force=0\n", 278 tpg->tpgt); 279 tpg->tpg_state = old_state; 280 return -EPERM; 281 } 282 283 core_tpg_clear_object_luns(&tpg->tpg_se_tpg); 284 285 if (tpg->param_list) { 286 iscsi_release_param_list(tpg->param_list); 287 tpg->param_list = NULL; 288 } 289 290 core_tpg_deregister(&tpg->tpg_se_tpg); 291 292 spin_lock(&tpg->tpg_state_lock); 293 tpg->tpg_state = TPG_STATE_FREE; 294 spin_unlock(&tpg->tpg_state_lock); 295 296 spin_lock(&tiqn->tiqn_tpg_lock); 297 tiqn->tiqn_ntpgs--; 298 list_del(&tpg->tpg_list); 299 spin_unlock(&tiqn->tiqn_tpg_lock); 300 301 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 302 tiqn->tiqn, tpg->tpgt); 303 304 kfree(tpg); 305 return 0; 306} 307 308int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 309{ 310 struct iscsi_param *param; 311 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 312 int ret; 313 314 spin_lock(&tpg->tpg_state_lock); 315 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 316 pr_err("iSCSI target portal group: %hu is already" 317 " active, ignoring request.\n", tpg->tpgt); 318 spin_unlock(&tpg->tpg_state_lock); 319 return -EINVAL; 320 } 321 /* 322 * Make sure that AuthMethod does not contain None as an option 323 * unless explictly disabled. Set the default to CHAP if authentication 324 * is enforced (as per default), and remove the NONE option. 325 */ 326 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 327 if (!param) { 328 spin_unlock(&tpg->tpg_state_lock); 329 return -EINVAL; 330 } 331 332 if (tpg->tpg_attrib.authentication) { 333 if (!strcmp(param->value, NONE)) { 334 ret = iscsi_update_param_value(param, CHAP); 335 if (ret) 336 goto err; 337 } 338 339 ret = iscsit_ta_authentication(tpg, 1); 340 if (ret < 0) 341 goto err; 342 } 343 344 tpg->tpg_state = TPG_STATE_ACTIVE; 345 spin_unlock(&tpg->tpg_state_lock); 346 347 spin_lock(&tiqn->tiqn_tpg_lock); 348 tiqn->tiqn_active_tpgs++; 349 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 350 tpg->tpgt); 351 spin_unlock(&tiqn->tiqn_tpg_lock); 352 353 return 0; 354 355err: 356 spin_unlock(&tpg->tpg_state_lock); 357 return ret; 358} 359 360int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 361{ 362 struct iscsi_tiqn *tiqn; 363 u8 old_state = tpg->tpg_state; 364 365 spin_lock(&tpg->tpg_state_lock); 366 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 367 pr_err("iSCSI Target Portal Group: %hu is already" 368 " inactive, ignoring request.\n", tpg->tpgt); 369 spin_unlock(&tpg->tpg_state_lock); 370 return -EINVAL; 371 } 372 tpg->tpg_state = TPG_STATE_INACTIVE; 373 spin_unlock(&tpg->tpg_state_lock); 374 375 iscsit_clear_tpg_np_login_threads(tpg, false); 376 377 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 378 spin_lock(&tpg->tpg_state_lock); 379 tpg->tpg_state = old_state; 380 spin_unlock(&tpg->tpg_state_lock); 381 pr_err("Unable to disable iSCSI Target Portal Group:" 382 " %hu while active sessions exist, and force=0\n", 383 tpg->tpgt); 384 return -EPERM; 385 } 386 387 tiqn = tpg->tpg_tiqn; 388 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 389 return 0; 390 391 spin_lock(&tiqn->tiqn_tpg_lock); 392 tiqn->tiqn_active_tpgs--; 393 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 394 tpg->tpgt); 395 spin_unlock(&tiqn->tiqn_tpg_lock); 396 397 return 0; 398} 399 400struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 401 struct iscsi_session *sess) 402{ 403 struct se_session *se_sess = sess->se_sess; 404 struct se_node_acl *se_nacl = se_sess->se_node_acl; 405 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 406 se_node_acl); 407 408 return &acl->node_attrib; 409} 410 411struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 412 struct iscsi_tpg_np *tpg_np, 413 int network_transport) 414{ 415 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 416 417 spin_lock(&tpg_np->tpg_np_parent_lock); 418 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 419 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 420 if (tpg_np_child->tpg_np->np_network_transport == 421 network_transport) { 422 spin_unlock(&tpg_np->tpg_np_parent_lock); 423 return tpg_np_child; 424 } 425 } 426 spin_unlock(&tpg_np->tpg_np_parent_lock); 427 428 return NULL; 429} 430 431static bool iscsit_tpg_check_network_portal( 432 struct iscsi_tiqn *tiqn, 433 struct __kernel_sockaddr_storage *sockaddr, 434 int network_transport) 435{ 436 struct iscsi_portal_group *tpg; 437 struct iscsi_tpg_np *tpg_np; 438 struct iscsi_np *np; 439 bool match = false; 440 441 spin_lock(&tiqn->tiqn_tpg_lock); 442 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 443 444 spin_lock(&tpg->tpg_np_lock); 445 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 446 np = tpg_np->tpg_np; 447 448 match = iscsit_check_np_match(sockaddr, np, 449 network_transport); 450 if (match) 451 break; 452 } 453 spin_unlock(&tpg->tpg_np_lock); 454 } 455 spin_unlock(&tiqn->tiqn_tpg_lock); 456 457 return match; 458} 459 460struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 461 struct iscsi_portal_group *tpg, 462 struct __kernel_sockaddr_storage *sockaddr, 463 struct iscsi_tpg_np *tpg_np_parent, 464 int network_transport) 465{ 466 struct iscsi_np *np; 467 struct iscsi_tpg_np *tpg_np; 468 469 if (!tpg_np_parent) { 470 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 471 network_transport)) { 472 pr_err("Network Portal: %pISc already exists on a" 473 " different TPG on %s\n", sockaddr, 474 tpg->tpg_tiqn->tiqn); 475 return ERR_PTR(-EEXIST); 476 } 477 } 478 479 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 480 if (!tpg_np) { 481 pr_err("Unable to allocate memory for" 482 " struct iscsi_tpg_np.\n"); 483 return ERR_PTR(-ENOMEM); 484 } 485 486 np = iscsit_add_np(sockaddr, network_transport); 487 if (IS_ERR(np)) { 488 kfree(tpg_np); 489 return ERR_CAST(np); 490 } 491 492 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 493 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 494 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 495 spin_lock_init(&tpg_np->tpg_np_parent_lock); 496 init_completion(&tpg_np->tpg_np_comp); 497 kref_init(&tpg_np->tpg_np_kref); 498 tpg_np->tpg_np = np; 499 tpg_np->tpg = tpg; 500 501 spin_lock(&tpg->tpg_np_lock); 502 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 503 tpg->num_tpg_nps++; 504 if (tpg->tpg_tiqn) 505 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 506 spin_unlock(&tpg->tpg_np_lock); 507 508 if (tpg_np_parent) { 509 tpg_np->tpg_np_parent = tpg_np_parent; 510 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 511 list_add_tail(&tpg_np->tpg_np_child_list, 512 &tpg_np_parent->tpg_np_parent_list); 513 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 514 } 515 516 pr_debug("CORE[%s] - Added Network Portal: %pISc:%hu,%hu on %s\n", 517 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt, 518 np->np_transport->name); 519 520 return tpg_np; 521} 522 523static int iscsit_tpg_release_np( 524 struct iscsi_tpg_np *tpg_np, 525 struct iscsi_portal_group *tpg, 526 struct iscsi_np *np) 527{ 528 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 529 530 pr_debug("CORE[%s] - Removed Network Portal: %pISc:%hu,%hu on %s\n", 531 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, np->np_port, tpg->tpgt, 532 np->np_transport->name); 533 534 tpg_np->tpg_np = NULL; 535 tpg_np->tpg = NULL; 536 kfree(tpg_np); 537 /* 538 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 539 */ 540 return iscsit_del_np(np); 541} 542 543int iscsit_tpg_del_network_portal( 544 struct iscsi_portal_group *tpg, 545 struct iscsi_tpg_np *tpg_np) 546{ 547 struct iscsi_np *np; 548 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 549 int ret = 0; 550 551 np = tpg_np->tpg_np; 552 if (!np) { 553 pr_err("Unable to locate struct iscsi_np from" 554 " struct iscsi_tpg_np\n"); 555 return -EINVAL; 556 } 557 558 if (!tpg_np->tpg_np_parent) { 559 /* 560 * We are the parent tpg network portal. Release all of the 561 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 562 * list first. 563 */ 564 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 565 &tpg_np->tpg_np_parent_list, 566 tpg_np_child_list) { 567 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 568 if (ret < 0) 569 pr_err("iscsit_tpg_del_network_portal()" 570 " failed: %d\n", ret); 571 } 572 } else { 573 /* 574 * We are not the parent ISCSI_TCP tpg network portal. Release 575 * our own network portals from the child list. 576 */ 577 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 578 list_del(&tpg_np->tpg_np_child_list); 579 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 580 } 581 582 spin_lock(&tpg->tpg_np_lock); 583 list_del(&tpg_np->tpg_np_list); 584 tpg->num_tpg_nps--; 585 if (tpg->tpg_tiqn) 586 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 587 spin_unlock(&tpg->tpg_np_lock); 588 589 return iscsit_tpg_release_np(tpg_np, tpg, np); 590} 591 592int iscsit_tpg_set_initiator_node_queue_depth( 593 struct iscsi_portal_group *tpg, 594 unsigned char *initiatorname, 595 u32 queue_depth, 596 int force) 597{ 598 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, 599 initiatorname, queue_depth, force); 600} 601 602int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 603{ 604 unsigned char buf1[256], buf2[256], *none = NULL; 605 int len; 606 struct iscsi_param *param; 607 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 608 609 if ((authentication != 1) && (authentication != 0)) { 610 pr_err("Illegal value for authentication parameter:" 611 " %u, ignoring request.\n", authentication); 612 return -EINVAL; 613 } 614 615 memset(buf1, 0, sizeof(buf1)); 616 memset(buf2, 0, sizeof(buf2)); 617 618 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 619 if (!param) 620 return -EINVAL; 621 622 if (authentication) { 623 snprintf(buf1, sizeof(buf1), "%s", param->value); 624 none = strstr(buf1, NONE); 625 if (!none) 626 goto out; 627 if (!strncmp(none + 4, ",", 1)) { 628 if (!strcmp(buf1, none)) 629 sprintf(buf2, "%s", none+5); 630 else { 631 none--; 632 *none = '\0'; 633 len = sprintf(buf2, "%s", buf1); 634 none += 5; 635 sprintf(buf2 + len, "%s", none); 636 } 637 } else { 638 none--; 639 *none = '\0'; 640 sprintf(buf2, "%s", buf1); 641 } 642 if (iscsi_update_param_value(param, buf2) < 0) 643 return -EINVAL; 644 } else { 645 snprintf(buf1, sizeof(buf1), "%s", param->value); 646 none = strstr(buf1, NONE); 647 if (none) 648 goto out; 649 strncat(buf1, ",", strlen(",")); 650 strncat(buf1, NONE, strlen(NONE)); 651 if (iscsi_update_param_value(param, buf1) < 0) 652 return -EINVAL; 653 } 654 655out: 656 a->authentication = authentication; 657 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 658 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 659 660 return 0; 661} 662 663int iscsit_ta_login_timeout( 664 struct iscsi_portal_group *tpg, 665 u32 login_timeout) 666{ 667 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 668 669 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 670 pr_err("Requested Login Timeout %u larger than maximum" 671 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 672 return -EINVAL; 673 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 674 pr_err("Requested Logout Timeout %u smaller than" 675 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 676 return -EINVAL; 677 } 678 679 a->login_timeout = login_timeout; 680 pr_debug("Set Logout Timeout to %u for Target Portal Group" 681 " %hu\n", a->login_timeout, tpg->tpgt); 682 683 return 0; 684} 685 686int iscsit_ta_netif_timeout( 687 struct iscsi_portal_group *tpg, 688 u32 netif_timeout) 689{ 690 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 691 692 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 693 pr_err("Requested Network Interface Timeout %u larger" 694 " than maximum %u\n", netif_timeout, 695 TA_NETIF_TIMEOUT_MAX); 696 return -EINVAL; 697 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 698 pr_err("Requested Network Interface Timeout %u smaller" 699 " than minimum %u\n", netif_timeout, 700 TA_NETIF_TIMEOUT_MIN); 701 return -EINVAL; 702 } 703 704 a->netif_timeout = netif_timeout; 705 pr_debug("Set Network Interface Timeout to %u for" 706 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 707 708 return 0; 709} 710 711int iscsit_ta_generate_node_acls( 712 struct iscsi_portal_group *tpg, 713 u32 flag) 714{ 715 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 716 717 if ((flag != 0) && (flag != 1)) { 718 pr_err("Illegal value %d\n", flag); 719 return -EINVAL; 720 } 721 722 a->generate_node_acls = flag; 723 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 724 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 725 726 if (flag == 1 && a->cache_dynamic_acls == 0) { 727 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 728 "generate_node_acls=1\n"); 729 a->cache_dynamic_acls = 1; 730 } 731 732 return 0; 733} 734 735int iscsit_ta_default_cmdsn_depth( 736 struct iscsi_portal_group *tpg, 737 u32 tcq_depth) 738{ 739 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 740 741 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 742 pr_err("Requested Default Queue Depth: %u larger" 743 " than maximum %u\n", tcq_depth, 744 TA_DEFAULT_CMDSN_DEPTH_MAX); 745 return -EINVAL; 746 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 747 pr_err("Requested Default Queue Depth: %u smaller" 748 " than minimum %u\n", tcq_depth, 749 TA_DEFAULT_CMDSN_DEPTH_MIN); 750 return -EINVAL; 751 } 752 753 a->default_cmdsn_depth = tcq_depth; 754 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 755 tpg->tpgt, a->default_cmdsn_depth); 756 757 return 0; 758} 759 760int iscsit_ta_cache_dynamic_acls( 761 struct iscsi_portal_group *tpg, 762 u32 flag) 763{ 764 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 765 766 if ((flag != 0) && (flag != 1)) { 767 pr_err("Illegal value %d\n", flag); 768 return -EINVAL; 769 } 770 771 if (a->generate_node_acls == 1 && flag == 0) { 772 pr_debug("Skipping cache_dynamic_acls=0 when" 773 " generate_node_acls=1\n"); 774 return 0; 775 } 776 777 a->cache_dynamic_acls = flag; 778 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 779 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 780 "Enabled" : "Disabled"); 781 782 return 0; 783} 784 785int iscsit_ta_demo_mode_write_protect( 786 struct iscsi_portal_group *tpg, 787 u32 flag) 788{ 789 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 790 791 if ((flag != 0) && (flag != 1)) { 792 pr_err("Illegal value %d\n", flag); 793 return -EINVAL; 794 } 795 796 a->demo_mode_write_protect = flag; 797 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 798 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 799 800 return 0; 801} 802 803int iscsit_ta_prod_mode_write_protect( 804 struct iscsi_portal_group *tpg, 805 u32 flag) 806{ 807 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 808 809 if ((flag != 0) && (flag != 1)) { 810 pr_err("Illegal value %d\n", flag); 811 return -EINVAL; 812 } 813 814 a->prod_mode_write_protect = flag; 815 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 816 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 817 "ON" : "OFF"); 818 819 return 0; 820} 821 822int iscsit_ta_demo_mode_discovery( 823 struct iscsi_portal_group *tpg, 824 u32 flag) 825{ 826 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 827 828 if ((flag != 0) && (flag != 1)) { 829 pr_err("Illegal value %d\n", flag); 830 return -EINVAL; 831 } 832 833 a->demo_mode_discovery = flag; 834 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 835 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 836 "ON" : "OFF"); 837 838 return 0; 839} 840 841int iscsit_ta_default_erl( 842 struct iscsi_portal_group *tpg, 843 u32 default_erl) 844{ 845 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 846 847 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 848 pr_err("Illegal value for default_erl: %u\n", default_erl); 849 return -EINVAL; 850 } 851 852 a->default_erl = default_erl; 853 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 854 855 return 0; 856} 857 858int iscsit_ta_t10_pi( 859 struct iscsi_portal_group *tpg, 860 u32 flag) 861{ 862 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 863 864 if ((flag != 0) && (flag != 1)) { 865 pr_err("Illegal value %d\n", flag); 866 return -EINVAL; 867 } 868 869 a->t10_pi = flag; 870 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 871 " %s\n", tpg->tpgt, (a->t10_pi) ? 872 "ON" : "OFF"); 873 874 return 0; 875} 876 877int iscsit_ta_fabric_prot_type( 878 struct iscsi_portal_group *tpg, 879 u32 prot_type) 880{ 881 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 882 883 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 884 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 885 return -EINVAL; 886 } 887 888 a->fabric_prot_type = prot_type; 889 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 890 tpg->tpgt, prot_type); 891 892 return 0; 893} 894