1// SPDX-License-Identifier: GPL-2.0-or-later 2/******************************************************************************* 3 * This file contains iSCSI Target Portal Group related functions. 4 * 5 * (c) Copyright 2007-2013 Datera, Inc. 6 * 7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 8 * 9 ******************************************************************************/ 10 11#include <linux/slab.h> 12#include <target/target_core_base.h> 13#include <target/target_core_fabric.h> 14#include <target/iscsi/iscsi_target_core.h> 15#include "iscsi_target_erl0.h" 16#include "iscsi_target_login.h" 17#include "iscsi_target_nodeattrib.h" 18#include "iscsi_target_tpg.h" 19#include "iscsi_target_util.h" 20#include "iscsi_target.h" 21#include "iscsi_target_parameters.h" 22 23#include <target/iscsi/iscsi_transport.h> 24 25struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt) 26{ 27 struct iscsi_portal_group *tpg; 28 29 tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL); 30 if (!tpg) { 31 pr_err("Unable to allocate struct iscsi_portal_group\n"); 32 return NULL; 33 } 34 35 tpg->tpgt = tpgt; 36 tpg->tpg_state = TPG_STATE_FREE; 37 tpg->tpg_tiqn = tiqn; 38 INIT_LIST_HEAD(&tpg->tpg_gnp_list); 39 INIT_LIST_HEAD(&tpg->tpg_list); 40 mutex_init(&tpg->tpg_access_lock); 41 sema_init(&tpg->np_login_sem, 1); 42 spin_lock_init(&tpg->tpg_state_lock); 43 spin_lock_init(&tpg->tpg_np_lock); 44 45 return tpg; 46} 47 48static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); 49 50int iscsit_load_discovery_tpg(void) 51{ 52 struct iscsi_param *param; 53 struct iscsi_portal_group *tpg; 54 int ret; 55 56 tpg = iscsit_alloc_portal_group(NULL, 1); 57 if (!tpg) { 58 pr_err("Unable to allocate struct iscsi_portal_group\n"); 59 return -1; 60 } 61 /* 62 * Save iscsi_ops pointer for special case discovery TPG that 63 * doesn't exist as se_wwn->wwn_group within configfs. 64 */ 65 tpg->tpg_se_tpg.se_tpg_tfo = &iscsi_ops; 66 ret = core_tpg_register(NULL, &tpg->tpg_se_tpg, -1); 67 if (ret < 0) { 68 kfree(tpg); 69 return -1; 70 } 71 72 tpg->sid = 1; /* First Assigned LIO Session ID */ 73 iscsit_set_default_tpg_attribs(tpg); 74 75 if (iscsi_create_default_params(&tpg->param_list) < 0) 76 goto out; 77 /* 78 * By default we disable authentication for discovery sessions, 79 * this can be changed with: 80 * 81 * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth 82 */ 83 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 84 if (!param) 85 goto free_pl_out; 86 87 if (iscsi_update_param_value(param, "CHAP,None") < 0) 88 goto free_pl_out; 89 90 tpg->tpg_attrib.authentication = 0; 91 92 spin_lock(&tpg->tpg_state_lock); 93 tpg->tpg_state = TPG_STATE_ACTIVE; 94 spin_unlock(&tpg->tpg_state_lock); 95 96 iscsit_global->discovery_tpg = tpg; 97 pr_debug("CORE[0] - Allocated Discovery TPG\n"); 98 99 return 0; 100free_pl_out: 101 iscsi_release_param_list(tpg->param_list); 102out: 103 if (tpg->sid == 1) 104 core_tpg_deregister(&tpg->tpg_se_tpg); 105 kfree(tpg); 106 return -1; 107} 108 109void iscsit_release_discovery_tpg(void) 110{ 111 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; 112 113 if (!tpg) 114 return; 115 116 iscsi_release_param_list(tpg->param_list); 117 core_tpg_deregister(&tpg->tpg_se_tpg); 118 119 kfree(tpg); 120 iscsit_global->discovery_tpg = NULL; 121} 122 123struct iscsi_portal_group *iscsit_get_tpg_from_np( 124 struct iscsi_tiqn *tiqn, 125 struct iscsi_np *np, 126 struct iscsi_tpg_np **tpg_np_out) 127{ 128 struct iscsi_portal_group *tpg = NULL; 129 struct iscsi_tpg_np *tpg_np; 130 131 spin_lock(&tiqn->tiqn_tpg_lock); 132 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 133 134 spin_lock(&tpg->tpg_state_lock); 135 if (tpg->tpg_state != TPG_STATE_ACTIVE) { 136 spin_unlock(&tpg->tpg_state_lock); 137 continue; 138 } 139 spin_unlock(&tpg->tpg_state_lock); 140 141 spin_lock(&tpg->tpg_np_lock); 142 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 143 if (tpg_np->tpg_np == np) { 144 *tpg_np_out = tpg_np; 145 kref_get(&tpg_np->tpg_np_kref); 146 spin_unlock(&tpg->tpg_np_lock); 147 spin_unlock(&tiqn->tiqn_tpg_lock); 148 return tpg; 149 } 150 } 151 spin_unlock(&tpg->tpg_np_lock); 152 } 153 spin_unlock(&tiqn->tiqn_tpg_lock); 154 155 return NULL; 156} 157 158int iscsit_get_tpg( 159 struct iscsi_portal_group *tpg) 160{ 161 return mutex_lock_interruptible(&tpg->tpg_access_lock); 162} 163 164void iscsit_put_tpg(struct iscsi_portal_group *tpg) 165{ 166 mutex_unlock(&tpg->tpg_access_lock); 167} 168 169static void iscsit_clear_tpg_np_login_thread( 170 struct iscsi_tpg_np *tpg_np, 171 struct iscsi_portal_group *tpg, 172 bool shutdown) 173{ 174 if (!tpg_np->tpg_np) { 175 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 176 return; 177 } 178 179 if (shutdown) 180 tpg_np->tpg_np->enabled = false; 181 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 182} 183 184static void iscsit_clear_tpg_np_login_threads( 185 struct iscsi_portal_group *tpg, 186 bool shutdown) 187{ 188 struct iscsi_tpg_np *tpg_np; 189 190 spin_lock(&tpg->tpg_np_lock); 191 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 192 if (!tpg_np->tpg_np) { 193 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 194 continue; 195 } 196 spin_unlock(&tpg->tpg_np_lock); 197 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); 198 spin_lock(&tpg->tpg_np_lock); 199 } 200 spin_unlock(&tpg->tpg_np_lock); 201} 202 203void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) 204{ 205 iscsi_print_params(tpg->param_list); 206} 207 208static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) 209{ 210 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 211 212 a->authentication = TA_AUTHENTICATION; 213 a->login_timeout = TA_LOGIN_TIMEOUT; 214 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 215 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 216 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 217 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 218 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 219 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 220 a->default_erl = TA_DEFAULT_ERL; 221 a->t10_pi = TA_DEFAULT_T10_PI; 222 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; 223 a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS; 224 a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND; 225} 226 227int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 228{ 229 if (tpg->tpg_state != TPG_STATE_FREE) { 230 pr_err("Unable to add iSCSI Target Portal Group: %d" 231 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 232 return -EEXIST; 233 } 234 iscsit_set_default_tpg_attribs(tpg); 235 236 if (iscsi_create_default_params(&tpg->param_list) < 0) 237 goto err_out; 238 239 tpg->tpg_attrib.tpg = tpg; 240 241 spin_lock(&tpg->tpg_state_lock); 242 tpg->tpg_state = TPG_STATE_INACTIVE; 243 spin_unlock(&tpg->tpg_state_lock); 244 245 spin_lock(&tiqn->tiqn_tpg_lock); 246 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 247 tiqn->tiqn_ntpgs++; 248 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 249 tiqn->tiqn, tpg->tpgt); 250 spin_unlock(&tiqn->tiqn_tpg_lock); 251 252 return 0; 253err_out: 254 if (tpg->param_list) { 255 iscsi_release_param_list(tpg->param_list); 256 tpg->param_list = NULL; 257 } 258 return -ENOMEM; 259} 260 261int iscsit_tpg_del_portal_group( 262 struct iscsi_tiqn *tiqn, 263 struct iscsi_portal_group *tpg, 264 int force) 265{ 266 u8 old_state = tpg->tpg_state; 267 268 spin_lock(&tpg->tpg_state_lock); 269 tpg->tpg_state = TPG_STATE_INACTIVE; 270 spin_unlock(&tpg->tpg_state_lock); 271 272 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 273 pr_err("Unable to delete iSCSI Target Portal Group:" 274 " %hu while active sessions exist, and force=0\n", 275 tpg->tpgt); 276 tpg->tpg_state = old_state; 277 return -EPERM; 278 } 279 280 if (tpg->param_list) { 281 iscsi_release_param_list(tpg->param_list); 282 tpg->param_list = NULL; 283 } 284 285 core_tpg_deregister(&tpg->tpg_se_tpg); 286 287 spin_lock(&tpg->tpg_state_lock); 288 tpg->tpg_state = TPG_STATE_FREE; 289 spin_unlock(&tpg->tpg_state_lock); 290 291 spin_lock(&tiqn->tiqn_tpg_lock); 292 tiqn->tiqn_ntpgs--; 293 list_del(&tpg->tpg_list); 294 spin_unlock(&tiqn->tiqn_tpg_lock); 295 296 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 297 tiqn->tiqn, tpg->tpgt); 298 299 kfree(tpg); 300 return 0; 301} 302 303int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 304{ 305 struct iscsi_param *param; 306 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 307 int ret; 308 309 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 310 pr_err("iSCSI target portal group: %hu is already" 311 " active, ignoring request.\n", tpg->tpgt); 312 return -EINVAL; 313 } 314 /* 315 * Make sure that AuthMethod does not contain None as an option 316 * unless explictly disabled. Set the default to CHAP if authentication 317 * is enforced (as per default), and remove the NONE option. 318 */ 319 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 320 if (!param) 321 return -EINVAL; 322 323 if (tpg->tpg_attrib.authentication) { 324 if (!strcmp(param->value, NONE)) { 325 ret = iscsi_update_param_value(param, CHAP); 326 if (ret) 327 goto err; 328 } 329 330 ret = iscsit_ta_authentication(tpg, 1); 331 if (ret < 0) 332 goto err; 333 } 334 335 spin_lock(&tpg->tpg_state_lock); 336 tpg->tpg_state = TPG_STATE_ACTIVE; 337 spin_unlock(&tpg->tpg_state_lock); 338 339 spin_lock(&tiqn->tiqn_tpg_lock); 340 tiqn->tiqn_active_tpgs++; 341 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 342 tpg->tpgt); 343 spin_unlock(&tiqn->tiqn_tpg_lock); 344 345 return 0; 346 347err: 348 return ret; 349} 350 351int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 352{ 353 struct iscsi_tiqn *tiqn; 354 u8 old_state = tpg->tpg_state; 355 356 spin_lock(&tpg->tpg_state_lock); 357 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 358 pr_err("iSCSI Target Portal Group: %hu is already" 359 " inactive, ignoring request.\n", tpg->tpgt); 360 spin_unlock(&tpg->tpg_state_lock); 361 return -EINVAL; 362 } 363 tpg->tpg_state = TPG_STATE_INACTIVE; 364 spin_unlock(&tpg->tpg_state_lock); 365 366 iscsit_clear_tpg_np_login_threads(tpg, false); 367 368 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 369 spin_lock(&tpg->tpg_state_lock); 370 tpg->tpg_state = old_state; 371 spin_unlock(&tpg->tpg_state_lock); 372 pr_err("Unable to disable iSCSI Target Portal Group:" 373 " %hu while active sessions exist, and force=0\n", 374 tpg->tpgt); 375 return -EPERM; 376 } 377 378 tiqn = tpg->tpg_tiqn; 379 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 380 return 0; 381 382 spin_lock(&tiqn->tiqn_tpg_lock); 383 tiqn->tiqn_active_tpgs--; 384 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 385 tpg->tpgt); 386 spin_unlock(&tiqn->tiqn_tpg_lock); 387 388 return 0; 389} 390 391struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 392 struct iscsit_session *sess) 393{ 394 struct se_session *se_sess = sess->se_sess; 395 struct se_node_acl *se_nacl = se_sess->se_node_acl; 396 struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl); 397 398 return &acl->node_attrib; 399} 400 401struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 402 struct iscsi_tpg_np *tpg_np, 403 int network_transport) 404{ 405 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 406 407 spin_lock(&tpg_np->tpg_np_parent_lock); 408 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 409 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 410 if (tpg_np_child->tpg_np->np_network_transport == 411 network_transport) { 412 spin_unlock(&tpg_np->tpg_np_parent_lock); 413 return tpg_np_child; 414 } 415 } 416 spin_unlock(&tpg_np->tpg_np_parent_lock); 417 418 return NULL; 419} 420 421static bool iscsit_tpg_check_network_portal( 422 struct iscsi_tiqn *tiqn, 423 struct sockaddr_storage *sockaddr, 424 int network_transport) 425{ 426 struct iscsi_portal_group *tpg; 427 struct iscsi_tpg_np *tpg_np; 428 struct iscsi_np *np; 429 bool match = false; 430 431 spin_lock(&tiqn->tiqn_tpg_lock); 432 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 433 434 spin_lock(&tpg->tpg_np_lock); 435 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 436 np = tpg_np->tpg_np; 437 438 match = iscsit_check_np_match(sockaddr, np, 439 network_transport); 440 if (match) 441 break; 442 } 443 spin_unlock(&tpg->tpg_np_lock); 444 445 if (match) 446 break; 447 } 448 spin_unlock(&tiqn->tiqn_tpg_lock); 449 450 return match; 451} 452 453struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 454 struct iscsi_portal_group *tpg, 455 struct sockaddr_storage *sockaddr, 456 struct iscsi_tpg_np *tpg_np_parent, 457 int network_transport) 458{ 459 struct iscsi_np *np; 460 struct iscsi_tpg_np *tpg_np; 461 462 if (!tpg_np_parent) { 463 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 464 network_transport)) { 465 pr_err("Network Portal: %pISc already exists on a" 466 " different TPG on %s\n", sockaddr, 467 tpg->tpg_tiqn->tiqn); 468 return ERR_PTR(-EEXIST); 469 } 470 } 471 472 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 473 if (!tpg_np) { 474 pr_err("Unable to allocate memory for" 475 " struct iscsi_tpg_np.\n"); 476 return ERR_PTR(-ENOMEM); 477 } 478 479 np = iscsit_add_np(sockaddr, network_transport); 480 if (IS_ERR(np)) { 481 kfree(tpg_np); 482 return ERR_CAST(np); 483 } 484 485 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 486 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 487 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 488 spin_lock_init(&tpg_np->tpg_np_parent_lock); 489 init_completion(&tpg_np->tpg_np_comp); 490 kref_init(&tpg_np->tpg_np_kref); 491 tpg_np->tpg_np = np; 492 tpg_np->tpg = tpg; 493 494 spin_lock(&tpg->tpg_np_lock); 495 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 496 tpg->num_tpg_nps++; 497 if (tpg->tpg_tiqn) 498 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 499 spin_unlock(&tpg->tpg_np_lock); 500 501 if (tpg_np_parent) { 502 tpg_np->tpg_np_parent = tpg_np_parent; 503 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 504 list_add_tail(&tpg_np->tpg_np_child_list, 505 &tpg_np_parent->tpg_np_parent_list); 506 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 507 } 508 509 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n", 510 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 511 np->np_transport->name); 512 513 return tpg_np; 514} 515 516static int iscsit_tpg_release_np( 517 struct iscsi_tpg_np *tpg_np, 518 struct iscsi_portal_group *tpg, 519 struct iscsi_np *np) 520{ 521 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 522 523 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n", 524 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 525 np->np_transport->name); 526 527 tpg_np->tpg_np = NULL; 528 tpg_np->tpg = NULL; 529 kfree(tpg_np); 530 /* 531 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 532 */ 533 return iscsit_del_np(np); 534} 535 536int iscsit_tpg_del_network_portal( 537 struct iscsi_portal_group *tpg, 538 struct iscsi_tpg_np *tpg_np) 539{ 540 struct iscsi_np *np; 541 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 542 int ret = 0; 543 544 np = tpg_np->tpg_np; 545 if (!np) { 546 pr_err("Unable to locate struct iscsi_np from" 547 " struct iscsi_tpg_np\n"); 548 return -EINVAL; 549 } 550 551 if (!tpg_np->tpg_np_parent) { 552 /* 553 * We are the parent tpg network portal. Release all of the 554 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 555 * list first. 556 */ 557 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 558 &tpg_np->tpg_np_parent_list, 559 tpg_np_child_list) { 560 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 561 if (ret < 0) 562 pr_err("iscsit_tpg_del_network_portal()" 563 " failed: %d\n", ret); 564 } 565 } else { 566 /* 567 * We are not the parent ISCSI_TCP tpg network portal. Release 568 * our own network portals from the child list. 569 */ 570 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 571 list_del(&tpg_np->tpg_np_child_list); 572 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 573 } 574 575 spin_lock(&tpg->tpg_np_lock); 576 list_del(&tpg_np->tpg_np_list); 577 tpg->num_tpg_nps--; 578 if (tpg->tpg_tiqn) 579 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 580 spin_unlock(&tpg->tpg_np_lock); 581 582 return iscsit_tpg_release_np(tpg_np, tpg, np); 583} 584 585int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 586{ 587 unsigned char buf1[256], buf2[256], *none = NULL; 588 int len; 589 struct iscsi_param *param; 590 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 591 592 if ((authentication != 1) && (authentication != 0)) { 593 pr_err("Illegal value for authentication parameter:" 594 " %u, ignoring request.\n", authentication); 595 return -EINVAL; 596 } 597 598 memset(buf1, 0, sizeof(buf1)); 599 memset(buf2, 0, sizeof(buf2)); 600 601 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 602 if (!param) 603 return -EINVAL; 604 605 if (authentication) { 606 snprintf(buf1, sizeof(buf1), "%s", param->value); 607 none = strstr(buf1, NONE); 608 if (!none) 609 goto out; 610 if (!strncmp(none + 4, ",", 1)) { 611 if (!strcmp(buf1, none)) 612 sprintf(buf2, "%s", none+5); 613 else { 614 none--; 615 *none = '\0'; 616 len = sprintf(buf2, "%s", buf1); 617 none += 5; 618 sprintf(buf2 + len, "%s", none); 619 } 620 } else { 621 none--; 622 *none = '\0'; 623 sprintf(buf2, "%s", buf1); 624 } 625 if (iscsi_update_param_value(param, buf2) < 0) 626 return -EINVAL; 627 } else { 628 snprintf(buf1, sizeof(buf1), "%s", param->value); 629 none = strstr(buf1, NONE); 630 if (none) 631 goto out; 632 strlcat(buf1, "," NONE, sizeof(buf1)); 633 if (iscsi_update_param_value(param, buf1) < 0) 634 return -EINVAL; 635 } 636 637out: 638 a->authentication = authentication; 639 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 640 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 641 642 return 0; 643} 644 645int iscsit_ta_login_timeout( 646 struct iscsi_portal_group *tpg, 647 u32 login_timeout) 648{ 649 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 650 651 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 652 pr_err("Requested Login Timeout %u larger than maximum" 653 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 654 return -EINVAL; 655 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 656 pr_err("Requested Logout Timeout %u smaller than" 657 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 658 return -EINVAL; 659 } 660 661 a->login_timeout = login_timeout; 662 pr_debug("Set Logout Timeout to %u for Target Portal Group" 663 " %hu\n", a->login_timeout, tpg->tpgt); 664 665 return 0; 666} 667 668int iscsit_ta_generate_node_acls( 669 struct iscsi_portal_group *tpg, 670 u32 flag) 671{ 672 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 673 674 if ((flag != 0) && (flag != 1)) { 675 pr_err("Illegal value %d\n", flag); 676 return -EINVAL; 677 } 678 679 a->generate_node_acls = flag; 680 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 681 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 682 683 if (flag == 1 && a->cache_dynamic_acls == 0) { 684 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 685 "generate_node_acls=1\n"); 686 a->cache_dynamic_acls = 1; 687 } 688 689 return 0; 690} 691 692int iscsit_ta_default_cmdsn_depth( 693 struct iscsi_portal_group *tpg, 694 u32 tcq_depth) 695{ 696 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 697 698 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 699 pr_err("Requested Default Queue Depth: %u larger" 700 " than maximum %u\n", tcq_depth, 701 TA_DEFAULT_CMDSN_DEPTH_MAX); 702 return -EINVAL; 703 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 704 pr_err("Requested Default Queue Depth: %u smaller" 705 " than minimum %u\n", tcq_depth, 706 TA_DEFAULT_CMDSN_DEPTH_MIN); 707 return -EINVAL; 708 } 709 710 a->default_cmdsn_depth = tcq_depth; 711 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 712 tpg->tpgt, a->default_cmdsn_depth); 713 714 return 0; 715} 716 717int iscsit_ta_cache_dynamic_acls( 718 struct iscsi_portal_group *tpg, 719 u32 flag) 720{ 721 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 722 723 if ((flag != 0) && (flag != 1)) { 724 pr_err("Illegal value %d\n", flag); 725 return -EINVAL; 726 } 727 728 if (a->generate_node_acls == 1 && flag == 0) { 729 pr_debug("Skipping cache_dynamic_acls=0 when" 730 " generate_node_acls=1\n"); 731 return 0; 732 } 733 734 a->cache_dynamic_acls = flag; 735 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 736 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 737 "Enabled" : "Disabled"); 738 739 return 0; 740} 741 742int iscsit_ta_demo_mode_write_protect( 743 struct iscsi_portal_group *tpg, 744 u32 flag) 745{ 746 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 747 748 if ((flag != 0) && (flag != 1)) { 749 pr_err("Illegal value %d\n", flag); 750 return -EINVAL; 751 } 752 753 a->demo_mode_write_protect = flag; 754 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 755 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 756 757 return 0; 758} 759 760int iscsit_ta_prod_mode_write_protect( 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 a->prod_mode_write_protect = flag; 772 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 773 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 774 "ON" : "OFF"); 775 776 return 0; 777} 778 779int iscsit_ta_demo_mode_discovery( 780 struct iscsi_portal_group *tpg, 781 u32 flag) 782{ 783 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 784 785 if ((flag != 0) && (flag != 1)) { 786 pr_err("Illegal value %d\n", flag); 787 return -EINVAL; 788 } 789 790 a->demo_mode_discovery = flag; 791 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 792 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 793 "ON" : "OFF"); 794 795 return 0; 796} 797 798int iscsit_ta_default_erl( 799 struct iscsi_portal_group *tpg, 800 u32 default_erl) 801{ 802 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 803 804 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 805 pr_err("Illegal value for default_erl: %u\n", default_erl); 806 return -EINVAL; 807 } 808 809 a->default_erl = default_erl; 810 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 811 812 return 0; 813} 814 815int iscsit_ta_t10_pi( 816 struct iscsi_portal_group *tpg, 817 u32 flag) 818{ 819 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 820 821 if ((flag != 0) && (flag != 1)) { 822 pr_err("Illegal value %d\n", flag); 823 return -EINVAL; 824 } 825 826 a->t10_pi = flag; 827 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 828 " %s\n", tpg->tpgt, (a->t10_pi) ? 829 "ON" : "OFF"); 830 831 return 0; 832} 833 834int iscsit_ta_fabric_prot_type( 835 struct iscsi_portal_group *tpg, 836 u32 prot_type) 837{ 838 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 839 840 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 841 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 842 return -EINVAL; 843 } 844 845 a->fabric_prot_type = prot_type; 846 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 847 tpg->tpgt, prot_type); 848 849 return 0; 850} 851 852int iscsit_ta_tpg_enabled_sendtargets( 853 struct iscsi_portal_group *tpg, 854 u32 flag) 855{ 856 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 857 858 if ((flag != 0) && (flag != 1)) { 859 pr_err("Illegal value %d\n", flag); 860 return -EINVAL; 861 } 862 863 a->tpg_enabled_sendtargets = flag; 864 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:" 865 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF"); 866 867 return 0; 868} 869 870int iscsit_ta_login_keys_workaround( 871 struct iscsi_portal_group *tpg, 872 u32 flag) 873{ 874 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 875 876 if ((flag != 0) && (flag != 1)) { 877 pr_err("Illegal value %d\n", flag); 878 return -EINVAL; 879 } 880 881 a->login_keys_workaround = flag; 882 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s ", 883 tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF"); 884 885 return 0; 886} 887