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 22 #include <target/iscsi/iscsi_target_core.h> 23 #include "iscsi_target_erl0.h" 24 #include "iscsi_target_login.h" 25 #include "iscsi_target_nodeattrib.h" 26 #include "iscsi_target_tpg.h" 27 #include "iscsi_target_util.h" 28 #include "iscsi_target.h" 29 #include "iscsi_target_parameters.h" 30 31 #include <target/iscsi/iscsi_transport.h> 32 33 struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt) 34 { 35 struct iscsi_portal_group *tpg; 36 37 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL); 38 if (!tpg) { 39 pr_err("Unable to allocate struct iscsi_portal_group\n"); 40 return NULL; 41 } 42 43 tpg->tpgt = tpgt; 44 tpg->tpg_state = TPG_STATE_FREE; 45 tpg->tpg_tiqn = tiqn; 46 INIT_LIST_HEAD(&tpg->tpg_gnp_list); 47 INIT_LIST_HEAD(&tpg->tpg_list); 48 mutex_init(&tpg->tpg_access_lock); 49 sema_init(&tpg->np_login_sem, 1); 50 spin_lock_init(&tpg->tpg_state_lock); 51 spin_lock_init(&tpg->tpg_np_lock); 52 53 return tpg; 54 } 55 56 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); 57 58 int iscsit_load_discovery_tpg(void) 59 { 60 struct iscsi_param *param; 61 struct iscsi_portal_group *tpg; 62 int ret; 63 64 tpg = iscsit_alloc_portal_group(NULL, 1); 65 if (!tpg) { 66 pr_err("Unable to allocate struct iscsi_portal_group\n"); 67 return -1; 68 } 69 /* 70 * Save iscsi_ops pointer for special case discovery TPG that 71 * doesn't exist as se_wwn->wwn_group within configfs. 72 */ 73 tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops; 74 ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1); 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 return mutex_lock_interruptible(&tpg->tpg_access_lock); 167 } 168 169 void iscsit_put_tpg(struct iscsi_portal_group *tpg) 170 { 171 mutex_unlock(&tpg->tpg_access_lock); 172 } 173 174 static void iscsit_clear_tpg_np_login_thread( 175 struct iscsi_tpg_np *tpg_np, 176 struct iscsi_portal_group *tpg, 177 bool shutdown) 178 { 179 if (!tpg_np->tpg_np) { 180 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 181 return; 182 } 183 184 if (shutdown) 185 tpg_np->tpg_np->enabled = false; 186 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 187 } 188 189 static void iscsit_clear_tpg_np_login_threads( 190 struct iscsi_portal_group *tpg, 191 bool shutdown) 192 { 193 struct iscsi_tpg_np *tpg_np; 194 195 spin_lock(&tpg->tpg_np_lock); 196 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 197 if (!tpg_np->tpg_np) { 198 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 199 continue; 200 } 201 spin_unlock(&tpg->tpg_np_lock); 202 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); 203 spin_lock(&tpg->tpg_np_lock); 204 } 205 spin_unlock(&tpg->tpg_np_lock); 206 } 207 208 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) 209 { 210 iscsi_print_params(tpg->param_list); 211 } 212 213 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) 214 { 215 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 216 217 a->authentication = TA_AUTHENTICATION; 218 a->login_timeout = TA_LOGIN_TIMEOUT; 219 a->netif_timeout = TA_NETIF_TIMEOUT; 220 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 221 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 222 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 223 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 224 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 225 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 226 a->default_erl = TA_DEFAULT_ERL; 227 a->t10_pi = TA_DEFAULT_T10_PI; 228 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; 229 a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS; 230 } 231 232 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 233 { 234 if (tpg->tpg_state != TPG_STATE_FREE) { 235 pr_err("Unable to add iSCSI Target Portal Group: %d" 236 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 237 return -EEXIST; 238 } 239 iscsit_set_default_tpg_attribs(tpg); 240 241 if (iscsi_create_default_params(&tpg->param_list) < 0) 242 goto err_out; 243 244 tpg->tpg_attrib.tpg = tpg; 245 246 spin_lock(&tpg->tpg_state_lock); 247 tpg->tpg_state = TPG_STATE_INACTIVE; 248 spin_unlock(&tpg->tpg_state_lock); 249 250 spin_lock(&tiqn->tiqn_tpg_lock); 251 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 252 tiqn->tiqn_ntpgs++; 253 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 254 tiqn->tiqn, tpg->tpgt); 255 spin_unlock(&tiqn->tiqn_tpg_lock); 256 257 return 0; 258 err_out: 259 if (tpg->param_list) { 260 iscsi_release_param_list(tpg->param_list); 261 tpg->param_list = NULL; 262 } 263 kfree(tpg); 264 return -ENOMEM; 265 } 266 267 int iscsit_tpg_del_portal_group( 268 struct iscsi_tiqn *tiqn, 269 struct iscsi_portal_group *tpg, 270 int force) 271 { 272 u8 old_state = tpg->tpg_state; 273 274 spin_lock(&tpg->tpg_state_lock); 275 tpg->tpg_state = TPG_STATE_INACTIVE; 276 spin_unlock(&tpg->tpg_state_lock); 277 278 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 279 pr_err("Unable to delete iSCSI Target Portal Group:" 280 " %hu while active sessions exist, and force=0\n", 281 tpg->tpgt); 282 tpg->tpg_state = old_state; 283 return -EPERM; 284 } 285 286 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 (tpg->tpg_attrib.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 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) 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 sockaddr_storage *sockaddr, 464 struct iscsi_tpg_np *tpg_np_parent, 465 int network_transport) 466 { 467 struct iscsi_np *np; 468 struct iscsi_tpg_np *tpg_np; 469 470 if (!tpg_np_parent) { 471 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 472 network_transport)) { 473 pr_err("Network Portal: %pISc already exists on a" 474 " different TPG on %s\n", sockaddr, 475 tpg->tpg_tiqn->tiqn); 476 return ERR_PTR(-EEXIST); 477 } 478 } 479 480 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 481 if (!tpg_np) { 482 pr_err("Unable to allocate memory for" 483 " struct iscsi_tpg_np.\n"); 484 return ERR_PTR(-ENOMEM); 485 } 486 487 np = iscsit_add_np(sockaddr, network_transport); 488 if (IS_ERR(np)) { 489 kfree(tpg_np); 490 return ERR_CAST(np); 491 } 492 493 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 494 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 495 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 496 spin_lock_init(&tpg_np->tpg_np_parent_lock); 497 init_completion(&tpg_np->tpg_np_comp); 498 kref_init(&tpg_np->tpg_np_kref); 499 tpg_np->tpg_np = np; 500 tpg_np->tpg = tpg; 501 502 spin_lock(&tpg->tpg_np_lock); 503 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 504 tpg->num_tpg_nps++; 505 if (tpg->tpg_tiqn) 506 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 507 spin_unlock(&tpg->tpg_np_lock); 508 509 if (tpg_np_parent) { 510 tpg_np->tpg_np_parent = tpg_np_parent; 511 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 512 list_add_tail(&tpg_np->tpg_np_child_list, 513 &tpg_np_parent->tpg_np_parent_list); 514 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 515 } 516 517 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n", 518 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 519 np->np_transport->name); 520 521 return tpg_np; 522 } 523 524 static int iscsit_tpg_release_np( 525 struct iscsi_tpg_np *tpg_np, 526 struct iscsi_portal_group *tpg, 527 struct iscsi_np *np) 528 { 529 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 530 531 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n", 532 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 533 np->np_transport->name); 534 535 tpg_np->tpg_np = NULL; 536 tpg_np->tpg = NULL; 537 kfree(tpg_np); 538 /* 539 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 540 */ 541 return iscsit_del_np(np); 542 } 543 544 int iscsit_tpg_del_network_portal( 545 struct iscsi_portal_group *tpg, 546 struct iscsi_tpg_np *tpg_np) 547 { 548 struct iscsi_np *np; 549 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 550 int ret = 0; 551 552 np = tpg_np->tpg_np; 553 if (!np) { 554 pr_err("Unable to locate struct iscsi_np from" 555 " struct iscsi_tpg_np\n"); 556 return -EINVAL; 557 } 558 559 if (!tpg_np->tpg_np_parent) { 560 /* 561 * We are the parent tpg network portal. Release all of the 562 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 563 * list first. 564 */ 565 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 566 &tpg_np->tpg_np_parent_list, 567 tpg_np_child_list) { 568 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 569 if (ret < 0) 570 pr_err("iscsit_tpg_del_network_portal()" 571 " failed: %d\n", ret); 572 } 573 } else { 574 /* 575 * We are not the parent ISCSI_TCP tpg network portal. Release 576 * our own network portals from the child list. 577 */ 578 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 579 list_del(&tpg_np->tpg_np_child_list); 580 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 581 } 582 583 spin_lock(&tpg->tpg_np_lock); 584 list_del(&tpg_np->tpg_np_list); 585 tpg->num_tpg_nps--; 586 if (tpg->tpg_tiqn) 587 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 588 spin_unlock(&tpg->tpg_np_lock); 589 590 return iscsit_tpg_release_np(tpg_np, tpg, np); 591 } 592 593 int iscsit_tpg_set_initiator_node_queue_depth( 594 struct iscsi_portal_group *tpg, 595 unsigned char *initiatorname, 596 u32 queue_depth, 597 int force) 598 { 599 return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, 600 initiatorname, queue_depth, force); 601 } 602 603 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 604 { 605 unsigned char buf1[256], buf2[256], *none = NULL; 606 int len; 607 struct iscsi_param *param; 608 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 609 610 if ((authentication != 1) && (authentication != 0)) { 611 pr_err("Illegal value for authentication parameter:" 612 " %u, ignoring request.\n", authentication); 613 return -EINVAL; 614 } 615 616 memset(buf1, 0, sizeof(buf1)); 617 memset(buf2, 0, sizeof(buf2)); 618 619 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 620 if (!param) 621 return -EINVAL; 622 623 if (authentication) { 624 snprintf(buf1, sizeof(buf1), "%s", param->value); 625 none = strstr(buf1, NONE); 626 if (!none) 627 goto out; 628 if (!strncmp(none + 4, ",", 1)) { 629 if (!strcmp(buf1, none)) 630 sprintf(buf2, "%s", none+5); 631 else { 632 none--; 633 *none = '\0'; 634 len = sprintf(buf2, "%s", buf1); 635 none += 5; 636 sprintf(buf2 + len, "%s", none); 637 } 638 } else { 639 none--; 640 *none = '\0'; 641 sprintf(buf2, "%s", buf1); 642 } 643 if (iscsi_update_param_value(param, buf2) < 0) 644 return -EINVAL; 645 } else { 646 snprintf(buf1, sizeof(buf1), "%s", param->value); 647 none = strstr(buf1, NONE); 648 if (none) 649 goto out; 650 strncat(buf1, ",", strlen(",")); 651 strncat(buf1, NONE, strlen(NONE)); 652 if (iscsi_update_param_value(param, buf1) < 0) 653 return -EINVAL; 654 } 655 656 out: 657 a->authentication = authentication; 658 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 659 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 660 661 return 0; 662 } 663 664 int iscsit_ta_login_timeout( 665 struct iscsi_portal_group *tpg, 666 u32 login_timeout) 667 { 668 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 669 670 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 671 pr_err("Requested Login Timeout %u larger than maximum" 672 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 673 return -EINVAL; 674 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 675 pr_err("Requested Logout Timeout %u smaller than" 676 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 677 return -EINVAL; 678 } 679 680 a->login_timeout = login_timeout; 681 pr_debug("Set Logout Timeout to %u for Target Portal Group" 682 " %hu\n", a->login_timeout, tpg->tpgt); 683 684 return 0; 685 } 686 687 int iscsit_ta_netif_timeout( 688 struct iscsi_portal_group *tpg, 689 u32 netif_timeout) 690 { 691 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 692 693 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 694 pr_err("Requested Network Interface Timeout %u larger" 695 " than maximum %u\n", netif_timeout, 696 TA_NETIF_TIMEOUT_MAX); 697 return -EINVAL; 698 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 699 pr_err("Requested Network Interface Timeout %u smaller" 700 " than minimum %u\n", netif_timeout, 701 TA_NETIF_TIMEOUT_MIN); 702 return -EINVAL; 703 } 704 705 a->netif_timeout = netif_timeout; 706 pr_debug("Set Network Interface Timeout to %u for" 707 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 708 709 return 0; 710 } 711 712 int iscsit_ta_generate_node_acls( 713 struct iscsi_portal_group *tpg, 714 u32 flag) 715 { 716 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 717 718 if ((flag != 0) && (flag != 1)) { 719 pr_err("Illegal value %d\n", flag); 720 return -EINVAL; 721 } 722 723 a->generate_node_acls = flag; 724 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 725 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 726 727 if (flag == 1 && a->cache_dynamic_acls == 0) { 728 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 729 "generate_node_acls=1\n"); 730 a->cache_dynamic_acls = 1; 731 } 732 733 return 0; 734 } 735 736 int iscsit_ta_default_cmdsn_depth( 737 struct iscsi_portal_group *tpg, 738 u32 tcq_depth) 739 { 740 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 741 742 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 743 pr_err("Requested Default Queue Depth: %u larger" 744 " than maximum %u\n", tcq_depth, 745 TA_DEFAULT_CMDSN_DEPTH_MAX); 746 return -EINVAL; 747 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 748 pr_err("Requested Default Queue Depth: %u smaller" 749 " than minimum %u\n", tcq_depth, 750 TA_DEFAULT_CMDSN_DEPTH_MIN); 751 return -EINVAL; 752 } 753 754 a->default_cmdsn_depth = tcq_depth; 755 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 756 tpg->tpgt, a->default_cmdsn_depth); 757 758 return 0; 759 } 760 761 int iscsit_ta_cache_dynamic_acls( 762 struct iscsi_portal_group *tpg, 763 u32 flag) 764 { 765 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 766 767 if ((flag != 0) && (flag != 1)) { 768 pr_err("Illegal value %d\n", flag); 769 return -EINVAL; 770 } 771 772 if (a->generate_node_acls == 1 && flag == 0) { 773 pr_debug("Skipping cache_dynamic_acls=0 when" 774 " generate_node_acls=1\n"); 775 return 0; 776 } 777 778 a->cache_dynamic_acls = flag; 779 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 780 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 781 "Enabled" : "Disabled"); 782 783 return 0; 784 } 785 786 int iscsit_ta_demo_mode_write_protect( 787 struct iscsi_portal_group *tpg, 788 u32 flag) 789 { 790 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 791 792 if ((flag != 0) && (flag != 1)) { 793 pr_err("Illegal value %d\n", flag); 794 return -EINVAL; 795 } 796 797 a->demo_mode_write_protect = flag; 798 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 799 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 800 801 return 0; 802 } 803 804 int iscsit_ta_prod_mode_write_protect( 805 struct iscsi_portal_group *tpg, 806 u32 flag) 807 { 808 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 809 810 if ((flag != 0) && (flag != 1)) { 811 pr_err("Illegal value %d\n", flag); 812 return -EINVAL; 813 } 814 815 a->prod_mode_write_protect = flag; 816 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 817 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 818 "ON" : "OFF"); 819 820 return 0; 821 } 822 823 int iscsit_ta_demo_mode_discovery( 824 struct iscsi_portal_group *tpg, 825 u32 flag) 826 { 827 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 828 829 if ((flag != 0) && (flag != 1)) { 830 pr_err("Illegal value %d\n", flag); 831 return -EINVAL; 832 } 833 834 a->demo_mode_discovery = flag; 835 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 836 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 837 "ON" : "OFF"); 838 839 return 0; 840 } 841 842 int iscsit_ta_default_erl( 843 struct iscsi_portal_group *tpg, 844 u32 default_erl) 845 { 846 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 847 848 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 849 pr_err("Illegal value for default_erl: %u\n", default_erl); 850 return -EINVAL; 851 } 852 853 a->default_erl = default_erl; 854 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 855 856 return 0; 857 } 858 859 int iscsit_ta_t10_pi( 860 struct iscsi_portal_group *tpg, 861 u32 flag) 862 { 863 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 864 865 if ((flag != 0) && (flag != 1)) { 866 pr_err("Illegal value %d\n", flag); 867 return -EINVAL; 868 } 869 870 a->t10_pi = flag; 871 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 872 " %s\n", tpg->tpgt, (a->t10_pi) ? 873 "ON" : "OFF"); 874 875 return 0; 876 } 877 878 int iscsit_ta_fabric_prot_type( 879 struct iscsi_portal_group *tpg, 880 u32 prot_type) 881 { 882 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 883 884 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 885 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 886 return -EINVAL; 887 } 888 889 a->fabric_prot_type = prot_type; 890 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 891 tpg->tpgt, prot_type); 892 893 return 0; 894 } 895 896 int iscsit_ta_tpg_enabled_sendtargets( 897 struct iscsi_portal_group *tpg, 898 u32 flag) 899 { 900 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 901 902 if ((flag != 0) && (flag != 1)) { 903 pr_err("Illegal value %d\n", flag); 904 return -EINVAL; 905 } 906 907 a->tpg_enabled_sendtargets = flag; 908 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:" 909 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF"); 910 911 return 0; 912 } 913