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->netif_timeout = TA_NETIF_TIMEOUT; 215 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 216 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 217 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 218 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 219 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 220 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 221 a->default_erl = TA_DEFAULT_ERL; 222 a->t10_pi = TA_DEFAULT_T10_PI; 223 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; 224 a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS; 225 a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND; 226} 227 228int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 229{ 230 if (tpg->tpg_state != TPG_STATE_FREE) { 231 pr_err("Unable to add iSCSI Target Portal Group: %d" 232 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 233 return -EEXIST; 234 } 235 iscsit_set_default_tpg_attribs(tpg); 236 237 if (iscsi_create_default_params(&tpg->param_list) < 0) 238 goto err_out; 239 240 tpg->tpg_attrib.tpg = tpg; 241 242 spin_lock(&tpg->tpg_state_lock); 243 tpg->tpg_state = TPG_STATE_INACTIVE; 244 spin_unlock(&tpg->tpg_state_lock); 245 246 spin_lock(&tiqn->tiqn_tpg_lock); 247 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 248 tiqn->tiqn_ntpgs++; 249 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 250 tiqn->tiqn, tpg->tpgt); 251 spin_unlock(&tiqn->tiqn_tpg_lock); 252 253 return 0; 254err_out: 255 if (tpg->param_list) { 256 iscsi_release_param_list(tpg->param_list); 257 tpg->param_list = NULL; 258 } 259 return -ENOMEM; 260} 261 262int iscsit_tpg_del_portal_group( 263 struct iscsi_tiqn *tiqn, 264 struct iscsi_portal_group *tpg, 265 int force) 266{ 267 u8 old_state = tpg->tpg_state; 268 269 spin_lock(&tpg->tpg_state_lock); 270 tpg->tpg_state = TPG_STATE_INACTIVE; 271 spin_unlock(&tpg->tpg_state_lock); 272 273 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 274 pr_err("Unable to delete iSCSI Target Portal Group:" 275 " %hu while active sessions exist, and force=0\n", 276 tpg->tpgt); 277 tpg->tpg_state = old_state; 278 return -EPERM; 279 } 280 281 if (tpg->param_list) { 282 iscsi_release_param_list(tpg->param_list); 283 tpg->param_list = NULL; 284 } 285 286 core_tpg_deregister(&tpg->tpg_se_tpg); 287 288 spin_lock(&tpg->tpg_state_lock); 289 tpg->tpg_state = TPG_STATE_FREE; 290 spin_unlock(&tpg->tpg_state_lock); 291 292 spin_lock(&tiqn->tiqn_tpg_lock); 293 tiqn->tiqn_ntpgs--; 294 list_del(&tpg->tpg_list); 295 spin_unlock(&tiqn->tiqn_tpg_lock); 296 297 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 298 tiqn->tiqn, tpg->tpgt); 299 300 kfree(tpg); 301 return 0; 302} 303 304int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 305{ 306 struct iscsi_param *param; 307 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 308 int ret; 309 310 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 311 pr_err("iSCSI target portal group: %hu is already" 312 " active, ignoring request.\n", tpg->tpgt); 313 return -EINVAL; 314 } 315 /* 316 * Make sure that AuthMethod does not contain None as an option 317 * unless explictly disabled. Set the default to CHAP if authentication 318 * is enforced (as per default), and remove the NONE option. 319 */ 320 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 321 if (!param) 322 return -EINVAL; 323 324 if (tpg->tpg_attrib.authentication) { 325 if (!strcmp(param->value, NONE)) { 326 ret = iscsi_update_param_value(param, CHAP); 327 if (ret) 328 goto err; 329 } 330 331 ret = iscsit_ta_authentication(tpg, 1); 332 if (ret < 0) 333 goto err; 334 } 335 336 spin_lock(&tpg->tpg_state_lock); 337 tpg->tpg_state = TPG_STATE_ACTIVE; 338 spin_unlock(&tpg->tpg_state_lock); 339 340 spin_lock(&tiqn->tiqn_tpg_lock); 341 tiqn->tiqn_active_tpgs++; 342 pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", 343 tpg->tpgt); 344 spin_unlock(&tiqn->tiqn_tpg_lock); 345 346 return 0; 347 348err: 349 return ret; 350} 351 352int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 353{ 354 struct iscsi_tiqn *tiqn; 355 u8 old_state = tpg->tpg_state; 356 357 spin_lock(&tpg->tpg_state_lock); 358 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 359 pr_err("iSCSI Target Portal Group: %hu is already" 360 " inactive, ignoring request.\n", tpg->tpgt); 361 spin_unlock(&tpg->tpg_state_lock); 362 return -EINVAL; 363 } 364 tpg->tpg_state = TPG_STATE_INACTIVE; 365 spin_unlock(&tpg->tpg_state_lock); 366 367 iscsit_clear_tpg_np_login_threads(tpg, false); 368 369 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 370 spin_lock(&tpg->tpg_state_lock); 371 tpg->tpg_state = old_state; 372 spin_unlock(&tpg->tpg_state_lock); 373 pr_err("Unable to disable iSCSI Target Portal Group:" 374 " %hu while active sessions exist, and force=0\n", 375 tpg->tpgt); 376 return -EPERM; 377 } 378 379 tiqn = tpg->tpg_tiqn; 380 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 381 return 0; 382 383 spin_lock(&tiqn->tiqn_tpg_lock); 384 tiqn->tiqn_active_tpgs--; 385 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 386 tpg->tpgt); 387 spin_unlock(&tiqn->tiqn_tpg_lock); 388 389 return 0; 390} 391 392struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 393 struct iscsi_session *sess) 394{ 395 struct se_session *se_sess = sess->se_sess; 396 struct se_node_acl *se_nacl = se_sess->se_node_acl; 397 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 398 se_node_acl); 399 400 return &acl->node_attrib; 401} 402 403struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 404 struct iscsi_tpg_np *tpg_np, 405 int network_transport) 406{ 407 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 408 409 spin_lock(&tpg_np->tpg_np_parent_lock); 410 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 411 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 412 if (tpg_np_child->tpg_np->np_network_transport == 413 network_transport) { 414 spin_unlock(&tpg_np->tpg_np_parent_lock); 415 return tpg_np_child; 416 } 417 } 418 spin_unlock(&tpg_np->tpg_np_parent_lock); 419 420 return NULL; 421} 422 423static bool iscsit_tpg_check_network_portal( 424 struct iscsi_tiqn *tiqn, 425 struct sockaddr_storage *sockaddr, 426 int network_transport) 427{ 428 struct iscsi_portal_group *tpg; 429 struct iscsi_tpg_np *tpg_np; 430 struct iscsi_np *np; 431 bool match = false; 432 433 spin_lock(&tiqn->tiqn_tpg_lock); 434 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 435 436 spin_lock(&tpg->tpg_np_lock); 437 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 438 np = tpg_np->tpg_np; 439 440 match = iscsit_check_np_match(sockaddr, np, 441 network_transport); 442 if (match) 443 break; 444 } 445 spin_unlock(&tpg->tpg_np_lock); 446 447 if (match) 448 break; 449 } 450 spin_unlock(&tiqn->tiqn_tpg_lock); 451 452 return match; 453} 454 455struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 456 struct iscsi_portal_group *tpg, 457 struct sockaddr_storage *sockaddr, 458 struct iscsi_tpg_np *tpg_np_parent, 459 int network_transport) 460{ 461 struct iscsi_np *np; 462 struct iscsi_tpg_np *tpg_np; 463 464 if (!tpg_np_parent) { 465 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 466 network_transport)) { 467 pr_err("Network Portal: %pISc already exists on a" 468 " different TPG on %s\n", sockaddr, 469 tpg->tpg_tiqn->tiqn); 470 return ERR_PTR(-EEXIST); 471 } 472 } 473 474 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 475 if (!tpg_np) { 476 pr_err("Unable to allocate memory for" 477 " struct iscsi_tpg_np.\n"); 478 return ERR_PTR(-ENOMEM); 479 } 480 481 np = iscsit_add_np(sockaddr, network_transport); 482 if (IS_ERR(np)) { 483 kfree(tpg_np); 484 return ERR_CAST(np); 485 } 486 487 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 488 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 489 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 490 spin_lock_init(&tpg_np->tpg_np_parent_lock); 491 init_completion(&tpg_np->tpg_np_comp); 492 kref_init(&tpg_np->tpg_np_kref); 493 tpg_np->tpg_np = np; 494 tpg_np->tpg = tpg; 495 496 spin_lock(&tpg->tpg_np_lock); 497 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 498 tpg->num_tpg_nps++; 499 if (tpg->tpg_tiqn) 500 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 501 spin_unlock(&tpg->tpg_np_lock); 502 503 if (tpg_np_parent) { 504 tpg_np->tpg_np_parent = tpg_np_parent; 505 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 506 list_add_tail(&tpg_np->tpg_np_child_list, 507 &tpg_np_parent->tpg_np_parent_list); 508 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 509 } 510 511 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n", 512 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 513 np->np_transport->name); 514 515 return tpg_np; 516} 517 518static int iscsit_tpg_release_np( 519 struct iscsi_tpg_np *tpg_np, 520 struct iscsi_portal_group *tpg, 521 struct iscsi_np *np) 522{ 523 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 524 525 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n", 526 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 527 np->np_transport->name); 528 529 tpg_np->tpg_np = NULL; 530 tpg_np->tpg = NULL; 531 kfree(tpg_np); 532 /* 533 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 534 */ 535 return iscsit_del_np(np); 536} 537 538int iscsit_tpg_del_network_portal( 539 struct iscsi_portal_group *tpg, 540 struct iscsi_tpg_np *tpg_np) 541{ 542 struct iscsi_np *np; 543 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 544 int ret = 0; 545 546 np = tpg_np->tpg_np; 547 if (!np) { 548 pr_err("Unable to locate struct iscsi_np from" 549 " struct iscsi_tpg_np\n"); 550 return -EINVAL; 551 } 552 553 if (!tpg_np->tpg_np_parent) { 554 /* 555 * We are the parent tpg network portal. Release all of the 556 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 557 * list first. 558 */ 559 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 560 &tpg_np->tpg_np_parent_list, 561 tpg_np_child_list) { 562 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 563 if (ret < 0) 564 pr_err("iscsit_tpg_del_network_portal()" 565 " failed: %d\n", ret); 566 } 567 } else { 568 /* 569 * We are not the parent ISCSI_TCP tpg network portal. Release 570 * our own network portals from the child list. 571 */ 572 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 573 list_del(&tpg_np->tpg_np_child_list); 574 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 575 } 576 577 spin_lock(&tpg->tpg_np_lock); 578 list_del(&tpg_np->tpg_np_list); 579 tpg->num_tpg_nps--; 580 if (tpg->tpg_tiqn) 581 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 582 spin_unlock(&tpg->tpg_np_lock); 583 584 return iscsit_tpg_release_np(tpg_np, tpg, np); 585} 586 587int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 588{ 589 unsigned char buf1[256], buf2[256], *none = NULL; 590 int len; 591 struct iscsi_param *param; 592 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 593 594 if ((authentication != 1) && (authentication != 0)) { 595 pr_err("Illegal value for authentication parameter:" 596 " %u, ignoring request.\n", authentication); 597 return -EINVAL; 598 } 599 600 memset(buf1, 0, sizeof(buf1)); 601 memset(buf2, 0, sizeof(buf2)); 602 603 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 604 if (!param) 605 return -EINVAL; 606 607 if (authentication) { 608 snprintf(buf1, sizeof(buf1), "%s", param->value); 609 none = strstr(buf1, NONE); 610 if (!none) 611 goto out; 612 if (!strncmp(none + 4, ",", 1)) { 613 if (!strcmp(buf1, none)) 614 sprintf(buf2, "%s", none+5); 615 else { 616 none--; 617 *none = '\0'; 618 len = sprintf(buf2, "%s", buf1); 619 none += 5; 620 sprintf(buf2 + len, "%s", none); 621 } 622 } else { 623 none--; 624 *none = '\0'; 625 sprintf(buf2, "%s", buf1); 626 } 627 if (iscsi_update_param_value(param, buf2) < 0) 628 return -EINVAL; 629 } else { 630 snprintf(buf1, sizeof(buf1), "%s", param->value); 631 none = strstr(buf1, NONE); 632 if (none) 633 goto out; 634 strlcat(buf1, "," NONE, sizeof(buf1)); 635 if (iscsi_update_param_value(param, buf1) < 0) 636 return -EINVAL; 637 } 638 639out: 640 a->authentication = authentication; 641 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 642 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 643 644 return 0; 645} 646 647int iscsit_ta_login_timeout( 648 struct iscsi_portal_group *tpg, 649 u32 login_timeout) 650{ 651 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 652 653 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 654 pr_err("Requested Login Timeout %u larger than maximum" 655 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 656 return -EINVAL; 657 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 658 pr_err("Requested Logout Timeout %u smaller than" 659 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 660 return -EINVAL; 661 } 662 663 a->login_timeout = login_timeout; 664 pr_debug("Set Logout Timeout to %u for Target Portal Group" 665 " %hu\n", a->login_timeout, tpg->tpgt); 666 667 return 0; 668} 669 670int iscsit_ta_netif_timeout( 671 struct iscsi_portal_group *tpg, 672 u32 netif_timeout) 673{ 674 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 675 676 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 677 pr_err("Requested Network Interface Timeout %u larger" 678 " than maximum %u\n", netif_timeout, 679 TA_NETIF_TIMEOUT_MAX); 680 return -EINVAL; 681 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 682 pr_err("Requested Network Interface Timeout %u smaller" 683 " than minimum %u\n", netif_timeout, 684 TA_NETIF_TIMEOUT_MIN); 685 return -EINVAL; 686 } 687 688 a->netif_timeout = netif_timeout; 689 pr_debug("Set Network Interface Timeout to %u for" 690 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 691 692 return 0; 693} 694 695int iscsit_ta_generate_node_acls( 696 struct iscsi_portal_group *tpg, 697 u32 flag) 698{ 699 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 700 701 if ((flag != 0) && (flag != 1)) { 702 pr_err("Illegal value %d\n", flag); 703 return -EINVAL; 704 } 705 706 a->generate_node_acls = flag; 707 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 708 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 709 710 if (flag == 1 && a->cache_dynamic_acls == 0) { 711 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 712 "generate_node_acls=1\n"); 713 a->cache_dynamic_acls = 1; 714 } 715 716 return 0; 717} 718 719int iscsit_ta_default_cmdsn_depth( 720 struct iscsi_portal_group *tpg, 721 u32 tcq_depth) 722{ 723 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 724 725 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 726 pr_err("Requested Default Queue Depth: %u larger" 727 " than maximum %u\n", tcq_depth, 728 TA_DEFAULT_CMDSN_DEPTH_MAX); 729 return -EINVAL; 730 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 731 pr_err("Requested Default Queue Depth: %u smaller" 732 " than minimum %u\n", tcq_depth, 733 TA_DEFAULT_CMDSN_DEPTH_MIN); 734 return -EINVAL; 735 } 736 737 a->default_cmdsn_depth = tcq_depth; 738 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 739 tpg->tpgt, a->default_cmdsn_depth); 740 741 return 0; 742} 743 744int iscsit_ta_cache_dynamic_acls( 745 struct iscsi_portal_group *tpg, 746 u32 flag) 747{ 748 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 749 750 if ((flag != 0) && (flag != 1)) { 751 pr_err("Illegal value %d\n", flag); 752 return -EINVAL; 753 } 754 755 if (a->generate_node_acls == 1 && flag == 0) { 756 pr_debug("Skipping cache_dynamic_acls=0 when" 757 " generate_node_acls=1\n"); 758 return 0; 759 } 760 761 a->cache_dynamic_acls = flag; 762 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 763 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 764 "Enabled" : "Disabled"); 765 766 return 0; 767} 768 769int iscsit_ta_demo_mode_write_protect( 770 struct iscsi_portal_group *tpg, 771 u32 flag) 772{ 773 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 774 775 if ((flag != 0) && (flag != 1)) { 776 pr_err("Illegal value %d\n", flag); 777 return -EINVAL; 778 } 779 780 a->demo_mode_write_protect = flag; 781 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 782 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 783 784 return 0; 785} 786 787int iscsit_ta_prod_mode_write_protect( 788 struct iscsi_portal_group *tpg, 789 u32 flag) 790{ 791 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 792 793 if ((flag != 0) && (flag != 1)) { 794 pr_err("Illegal value %d\n", flag); 795 return -EINVAL; 796 } 797 798 a->prod_mode_write_protect = flag; 799 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 800 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 801 "ON" : "OFF"); 802 803 return 0; 804} 805 806int iscsit_ta_demo_mode_discovery( 807 struct iscsi_portal_group *tpg, 808 u32 flag) 809{ 810 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 811 812 if ((flag != 0) && (flag != 1)) { 813 pr_err("Illegal value %d\n", flag); 814 return -EINVAL; 815 } 816 817 a->demo_mode_discovery = flag; 818 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 819 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 820 "ON" : "OFF"); 821 822 return 0; 823} 824 825int iscsit_ta_default_erl( 826 struct iscsi_portal_group *tpg, 827 u32 default_erl) 828{ 829 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 830 831 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 832 pr_err("Illegal value for default_erl: %u\n", default_erl); 833 return -EINVAL; 834 } 835 836 a->default_erl = default_erl; 837 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 838 839 return 0; 840} 841 842int iscsit_ta_t10_pi( 843 struct iscsi_portal_group *tpg, 844 u32 flag) 845{ 846 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 847 848 if ((flag != 0) && (flag != 1)) { 849 pr_err("Illegal value %d\n", flag); 850 return -EINVAL; 851 } 852 853 a->t10_pi = flag; 854 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 855 " %s\n", tpg->tpgt, (a->t10_pi) ? 856 "ON" : "OFF"); 857 858 return 0; 859} 860 861int iscsit_ta_fabric_prot_type( 862 struct iscsi_portal_group *tpg, 863 u32 prot_type) 864{ 865 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 866 867 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 868 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 869 return -EINVAL; 870 } 871 872 a->fabric_prot_type = prot_type; 873 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 874 tpg->tpgt, prot_type); 875 876 return 0; 877} 878 879int iscsit_ta_tpg_enabled_sendtargets( 880 struct iscsi_portal_group *tpg, 881 u32 flag) 882{ 883 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 884 885 if ((flag != 0) && (flag != 1)) { 886 pr_err("Illegal value %d\n", flag); 887 return -EINVAL; 888 } 889 890 a->tpg_enabled_sendtargets = flag; 891 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:" 892 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF"); 893 894 return 0; 895} 896 897int iscsit_ta_login_keys_workaround( 898 struct iscsi_portal_group *tpg, 899 u32 flag) 900{ 901 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 902 903 if ((flag != 0) && (flag != 1)) { 904 pr_err("Illegal value %d\n", flag); 905 return -EINVAL; 906 } 907 908 a->login_keys_workaround = flag; 909 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s ", 910 tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF"); 911 912 return 0; 913} 914