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 <linux/slab.h> 20 #include <target/target_core_base.h> 21 #include <target/target_core_fabric.h> 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 a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND; 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 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 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 return -EINVAL; 319 } 320 /* 321 * Make sure that AuthMethod does not contain None as an option 322 * unless explictly disabled. Set the default to CHAP if authentication 323 * is enforced (as per default), and remove the NONE option. 324 */ 325 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 326 if (!param) 327 return -EINVAL; 328 329 if (tpg->tpg_attrib.authentication) { 330 if (!strcmp(param->value, NONE)) { 331 ret = iscsi_update_param_value(param, CHAP); 332 if (ret) 333 goto err; 334 } 335 336 ret = iscsit_ta_authentication(tpg, 1); 337 if (ret < 0) 338 goto err; 339 } 340 341 spin_lock(&tpg->tpg_state_lock); 342 tpg->tpg_state = TPG_STATE_ACTIVE; 343 spin_unlock(&tpg->tpg_state_lock); 344 345 spin_lock(&tiqn->tiqn_tpg_lock); 346 tiqn->tiqn_active_tpgs++; 347 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 348 tpg->tpgt); 349 spin_unlock(&tiqn->tiqn_tpg_lock); 350 351 return 0; 352 353 err: 354 return ret; 355 } 356 357 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 358 { 359 struct iscsi_tiqn *tiqn; 360 u8 old_state = tpg->tpg_state; 361 362 spin_lock(&tpg->tpg_state_lock); 363 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 364 pr_err("iSCSI Target Portal Group: %hu is already" 365 " inactive, ignoring request.\n", tpg->tpgt); 366 spin_unlock(&tpg->tpg_state_lock); 367 return -EINVAL; 368 } 369 tpg->tpg_state = TPG_STATE_INACTIVE; 370 spin_unlock(&tpg->tpg_state_lock); 371 372 iscsit_clear_tpg_np_login_threads(tpg, false); 373 374 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 375 spin_lock(&tpg->tpg_state_lock); 376 tpg->tpg_state = old_state; 377 spin_unlock(&tpg->tpg_state_lock); 378 pr_err("Unable to disable iSCSI Target Portal Group:" 379 " %hu while active sessions exist, and force=0\n", 380 tpg->tpgt); 381 return -EPERM; 382 } 383 384 tiqn = tpg->tpg_tiqn; 385 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 386 return 0; 387 388 spin_lock(&tiqn->tiqn_tpg_lock); 389 tiqn->tiqn_active_tpgs--; 390 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 391 tpg->tpgt); 392 spin_unlock(&tiqn->tiqn_tpg_lock); 393 394 return 0; 395 } 396 397 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 398 struct iscsi_session *sess) 399 { 400 struct se_session *se_sess = sess->se_sess; 401 struct se_node_acl *se_nacl = se_sess->se_node_acl; 402 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 403 se_node_acl); 404 405 return &acl->node_attrib; 406 } 407 408 struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 409 struct iscsi_tpg_np *tpg_np, 410 int network_transport) 411 { 412 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 413 414 spin_lock(&tpg_np->tpg_np_parent_lock); 415 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 416 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 417 if (tpg_np_child->tpg_np->np_network_transport == 418 network_transport) { 419 spin_unlock(&tpg_np->tpg_np_parent_lock); 420 return tpg_np_child; 421 } 422 } 423 spin_unlock(&tpg_np->tpg_np_parent_lock); 424 425 return NULL; 426 } 427 428 static bool iscsit_tpg_check_network_portal( 429 struct iscsi_tiqn *tiqn, 430 struct sockaddr_storage *sockaddr, 431 int network_transport) 432 { 433 struct iscsi_portal_group *tpg; 434 struct iscsi_tpg_np *tpg_np; 435 struct iscsi_np *np; 436 bool match = false; 437 438 spin_lock(&tiqn->tiqn_tpg_lock); 439 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 440 441 spin_lock(&tpg->tpg_np_lock); 442 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 443 np = tpg_np->tpg_np; 444 445 match = iscsit_check_np_match(sockaddr, np, 446 network_transport); 447 if (match) 448 break; 449 } 450 spin_unlock(&tpg->tpg_np_lock); 451 } 452 spin_unlock(&tiqn->tiqn_tpg_lock); 453 454 return match; 455 } 456 457 struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 458 struct iscsi_portal_group *tpg, 459 struct sockaddr_storage *sockaddr, 460 struct iscsi_tpg_np *tpg_np_parent, 461 int network_transport) 462 { 463 struct iscsi_np *np; 464 struct iscsi_tpg_np *tpg_np; 465 466 if (!tpg_np_parent) { 467 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 468 network_transport)) { 469 pr_err("Network Portal: %pISc already exists on a" 470 " different TPG on %s\n", sockaddr, 471 tpg->tpg_tiqn->tiqn); 472 return ERR_PTR(-EEXIST); 473 } 474 } 475 476 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 477 if (!tpg_np) { 478 pr_err("Unable to allocate memory for" 479 " struct iscsi_tpg_np.\n"); 480 return ERR_PTR(-ENOMEM); 481 } 482 483 np = iscsit_add_np(sockaddr, network_transport); 484 if (IS_ERR(np)) { 485 kfree(tpg_np); 486 return ERR_CAST(np); 487 } 488 489 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 490 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 491 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 492 spin_lock_init(&tpg_np->tpg_np_parent_lock); 493 init_completion(&tpg_np->tpg_np_comp); 494 kref_init(&tpg_np->tpg_np_kref); 495 tpg_np->tpg_np = np; 496 tpg_np->tpg = tpg; 497 498 spin_lock(&tpg->tpg_np_lock); 499 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 500 tpg->num_tpg_nps++; 501 if (tpg->tpg_tiqn) 502 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 503 spin_unlock(&tpg->tpg_np_lock); 504 505 if (tpg_np_parent) { 506 tpg_np->tpg_np_parent = tpg_np_parent; 507 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 508 list_add_tail(&tpg_np->tpg_np_child_list, 509 &tpg_np_parent->tpg_np_parent_list); 510 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 511 } 512 513 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n", 514 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 515 np->np_transport->name); 516 517 return tpg_np; 518 } 519 520 static int iscsit_tpg_release_np( 521 struct iscsi_tpg_np *tpg_np, 522 struct iscsi_portal_group *tpg, 523 struct iscsi_np *np) 524 { 525 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 526 527 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n", 528 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 529 np->np_transport->name); 530 531 tpg_np->tpg_np = NULL; 532 tpg_np->tpg = NULL; 533 kfree(tpg_np); 534 /* 535 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 536 */ 537 return iscsit_del_np(np); 538 } 539 540 int iscsit_tpg_del_network_portal( 541 struct iscsi_portal_group *tpg, 542 struct iscsi_tpg_np *tpg_np) 543 { 544 struct iscsi_np *np; 545 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 546 int ret = 0; 547 548 np = tpg_np->tpg_np; 549 if (!np) { 550 pr_err("Unable to locate struct iscsi_np from" 551 " struct iscsi_tpg_np\n"); 552 return -EINVAL; 553 } 554 555 if (!tpg_np->tpg_np_parent) { 556 /* 557 * We are the parent tpg network portal. Release all of the 558 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 559 * list first. 560 */ 561 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 562 &tpg_np->tpg_np_parent_list, 563 tpg_np_child_list) { 564 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 565 if (ret < 0) 566 pr_err("iscsit_tpg_del_network_portal()" 567 " failed: %d\n", ret); 568 } 569 } else { 570 /* 571 * We are not the parent ISCSI_TCP tpg network portal. Release 572 * our own network portals from the child list. 573 */ 574 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 575 list_del(&tpg_np->tpg_np_child_list); 576 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 577 } 578 579 spin_lock(&tpg->tpg_np_lock); 580 list_del(&tpg_np->tpg_np_list); 581 tpg->num_tpg_nps--; 582 if (tpg->tpg_tiqn) 583 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 584 spin_unlock(&tpg->tpg_np_lock); 585 586 return iscsit_tpg_release_np(tpg_np, tpg, np); 587 } 588 589 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 590 { 591 unsigned char buf1[256], buf2[256], *none = NULL; 592 int len; 593 struct iscsi_param *param; 594 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 595 596 if ((authentication != 1) && (authentication != 0)) { 597 pr_err("Illegal value for authentication parameter:" 598 " %u, ignoring request.\n", authentication); 599 return -EINVAL; 600 } 601 602 memset(buf1, 0, sizeof(buf1)); 603 memset(buf2, 0, sizeof(buf2)); 604 605 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 606 if (!param) 607 return -EINVAL; 608 609 if (authentication) { 610 snprintf(buf1, sizeof(buf1), "%s", param->value); 611 none = strstr(buf1, NONE); 612 if (!none) 613 goto out; 614 if (!strncmp(none + 4, ",", 1)) { 615 if (!strcmp(buf1, none)) 616 sprintf(buf2, "%s", none+5); 617 else { 618 none--; 619 *none = '\0'; 620 len = sprintf(buf2, "%s", buf1); 621 none += 5; 622 sprintf(buf2 + len, "%s", none); 623 } 624 } else { 625 none--; 626 *none = '\0'; 627 sprintf(buf2, "%s", buf1); 628 } 629 if (iscsi_update_param_value(param, buf2) < 0) 630 return -EINVAL; 631 } else { 632 snprintf(buf1, sizeof(buf1), "%s", param->value); 633 none = strstr(buf1, NONE); 634 if (none) 635 goto out; 636 strncat(buf1, ",", strlen(",")); 637 strncat(buf1, NONE, strlen(NONE)); 638 if (iscsi_update_param_value(param, buf1) < 0) 639 return -EINVAL; 640 } 641 642 out: 643 a->authentication = authentication; 644 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 645 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 646 647 return 0; 648 } 649 650 int iscsit_ta_login_timeout( 651 struct iscsi_portal_group *tpg, 652 u32 login_timeout) 653 { 654 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 655 656 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 657 pr_err("Requested Login Timeout %u larger than maximum" 658 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 659 return -EINVAL; 660 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 661 pr_err("Requested Logout Timeout %u smaller than" 662 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 663 return -EINVAL; 664 } 665 666 a->login_timeout = login_timeout; 667 pr_debug("Set Logout Timeout to %u for Target Portal Group" 668 " %hu\n", a->login_timeout, tpg->tpgt); 669 670 return 0; 671 } 672 673 int iscsit_ta_netif_timeout( 674 struct iscsi_portal_group *tpg, 675 u32 netif_timeout) 676 { 677 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 678 679 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 680 pr_err("Requested Network Interface Timeout %u larger" 681 " than maximum %u\n", netif_timeout, 682 TA_NETIF_TIMEOUT_MAX); 683 return -EINVAL; 684 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 685 pr_err("Requested Network Interface Timeout %u smaller" 686 " than minimum %u\n", netif_timeout, 687 TA_NETIF_TIMEOUT_MIN); 688 return -EINVAL; 689 } 690 691 a->netif_timeout = netif_timeout; 692 pr_debug("Set Network Interface Timeout to %u for" 693 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 694 695 return 0; 696 } 697 698 int iscsit_ta_generate_node_acls( 699 struct iscsi_portal_group *tpg, 700 u32 flag) 701 { 702 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 703 704 if ((flag != 0) && (flag != 1)) { 705 pr_err("Illegal value %d\n", flag); 706 return -EINVAL; 707 } 708 709 a->generate_node_acls = flag; 710 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 711 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 712 713 if (flag == 1 && a->cache_dynamic_acls == 0) { 714 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 715 "generate_node_acls=1\n"); 716 a->cache_dynamic_acls = 1; 717 } 718 719 return 0; 720 } 721 722 int iscsit_ta_default_cmdsn_depth( 723 struct iscsi_portal_group *tpg, 724 u32 tcq_depth) 725 { 726 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 727 728 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 729 pr_err("Requested Default Queue Depth: %u larger" 730 " than maximum %u\n", tcq_depth, 731 TA_DEFAULT_CMDSN_DEPTH_MAX); 732 return -EINVAL; 733 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 734 pr_err("Requested Default Queue Depth: %u smaller" 735 " than minimum %u\n", tcq_depth, 736 TA_DEFAULT_CMDSN_DEPTH_MIN); 737 return -EINVAL; 738 } 739 740 a->default_cmdsn_depth = tcq_depth; 741 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 742 tpg->tpgt, a->default_cmdsn_depth); 743 744 return 0; 745 } 746 747 int iscsit_ta_cache_dynamic_acls( 748 struct iscsi_portal_group *tpg, 749 u32 flag) 750 { 751 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 752 753 if ((flag != 0) && (flag != 1)) { 754 pr_err("Illegal value %d\n", flag); 755 return -EINVAL; 756 } 757 758 if (a->generate_node_acls == 1 && flag == 0) { 759 pr_debug("Skipping cache_dynamic_acls=0 when" 760 " generate_node_acls=1\n"); 761 return 0; 762 } 763 764 a->cache_dynamic_acls = flag; 765 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 766 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 767 "Enabled" : "Disabled"); 768 769 return 0; 770 } 771 772 int iscsit_ta_demo_mode_write_protect( 773 struct iscsi_portal_group *tpg, 774 u32 flag) 775 { 776 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 777 778 if ((flag != 0) && (flag != 1)) { 779 pr_err("Illegal value %d\n", flag); 780 return -EINVAL; 781 } 782 783 a->demo_mode_write_protect = flag; 784 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 785 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 786 787 return 0; 788 } 789 790 int iscsit_ta_prod_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->prod_mode_write_protect = flag; 802 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 803 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 804 "ON" : "OFF"); 805 806 return 0; 807 } 808 809 int iscsit_ta_demo_mode_discovery( 810 struct iscsi_portal_group *tpg, 811 u32 flag) 812 { 813 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 814 815 if ((flag != 0) && (flag != 1)) { 816 pr_err("Illegal value %d\n", flag); 817 return -EINVAL; 818 } 819 820 a->demo_mode_discovery = flag; 821 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 822 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 823 "ON" : "OFF"); 824 825 return 0; 826 } 827 828 int iscsit_ta_default_erl( 829 struct iscsi_portal_group *tpg, 830 u32 default_erl) 831 { 832 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 833 834 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 835 pr_err("Illegal value for default_erl: %u\n", default_erl); 836 return -EINVAL; 837 } 838 839 a->default_erl = default_erl; 840 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 841 842 return 0; 843 } 844 845 int iscsit_ta_t10_pi( 846 struct iscsi_portal_group *tpg, 847 u32 flag) 848 { 849 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 850 851 if ((flag != 0) && (flag != 1)) { 852 pr_err("Illegal value %d\n", flag); 853 return -EINVAL; 854 } 855 856 a->t10_pi = flag; 857 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 858 " %s\n", tpg->tpgt, (a->t10_pi) ? 859 "ON" : "OFF"); 860 861 return 0; 862 } 863 864 int iscsit_ta_fabric_prot_type( 865 struct iscsi_portal_group *tpg, 866 u32 prot_type) 867 { 868 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 869 870 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 871 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 872 return -EINVAL; 873 } 874 875 a->fabric_prot_type = prot_type; 876 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 877 tpg->tpgt, prot_type); 878 879 return 0; 880 } 881 882 int iscsit_ta_tpg_enabled_sendtargets( 883 struct iscsi_portal_group *tpg, 884 u32 flag) 885 { 886 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 887 888 if ((flag != 0) && (flag != 1)) { 889 pr_err("Illegal value %d\n", flag); 890 return -EINVAL; 891 } 892 893 a->tpg_enabled_sendtargets = flag; 894 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:" 895 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF"); 896 897 return 0; 898 } 899 900 int iscsit_ta_login_keys_workaround( 901 struct iscsi_portal_group *tpg, 902 u32 flag) 903 { 904 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 905 906 if ((flag != 0) && (flag != 1)) { 907 pr_err("Illegal value %d\n", flag); 908 return -EINVAL; 909 } 910 911 a->login_keys_workaround = flag; 912 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s ", 913 tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF"); 914 915 return 0; 916 } 917