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 free_pl_out; 94 95 if (iscsi_update_param_value(param, "CHAP,None") < 0) 96 goto free_pl_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 free_pl_out: 109 iscsi_release_param_list(tpg->param_list); 110 out: 111 if (tpg->sid == 1) 112 core_tpg_deregister(&tpg->tpg_se_tpg); 113 kfree(tpg); 114 return -1; 115 } 116 117 void iscsit_release_discovery_tpg(void) 118 { 119 struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; 120 121 if (!tpg) 122 return; 123 124 iscsi_release_param_list(tpg->param_list); 125 core_tpg_deregister(&tpg->tpg_se_tpg); 126 127 kfree(tpg); 128 iscsit_global->discovery_tpg = NULL; 129 } 130 131 struct iscsi_portal_group *iscsit_get_tpg_from_np( 132 struct iscsi_tiqn *tiqn, 133 struct iscsi_np *np, 134 struct iscsi_tpg_np **tpg_np_out) 135 { 136 struct iscsi_portal_group *tpg = NULL; 137 struct iscsi_tpg_np *tpg_np; 138 139 spin_lock(&tiqn->tiqn_tpg_lock); 140 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 141 142 spin_lock(&tpg->tpg_state_lock); 143 if (tpg->tpg_state != TPG_STATE_ACTIVE) { 144 spin_unlock(&tpg->tpg_state_lock); 145 continue; 146 } 147 spin_unlock(&tpg->tpg_state_lock); 148 149 spin_lock(&tpg->tpg_np_lock); 150 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 151 if (tpg_np->tpg_np == np) { 152 *tpg_np_out = tpg_np; 153 kref_get(&tpg_np->tpg_np_kref); 154 spin_unlock(&tpg->tpg_np_lock); 155 spin_unlock(&tiqn->tiqn_tpg_lock); 156 return tpg; 157 } 158 } 159 spin_unlock(&tpg->tpg_np_lock); 160 } 161 spin_unlock(&tiqn->tiqn_tpg_lock); 162 163 return NULL; 164 } 165 166 int iscsit_get_tpg( 167 struct iscsi_portal_group *tpg) 168 { 169 return mutex_lock_interruptible(&tpg->tpg_access_lock); 170 } 171 172 void iscsit_put_tpg(struct iscsi_portal_group *tpg) 173 { 174 mutex_unlock(&tpg->tpg_access_lock); 175 } 176 177 static void iscsit_clear_tpg_np_login_thread( 178 struct iscsi_tpg_np *tpg_np, 179 struct iscsi_portal_group *tpg, 180 bool shutdown) 181 { 182 if (!tpg_np->tpg_np) { 183 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 184 return; 185 } 186 187 if (shutdown) 188 tpg_np->tpg_np->enabled = false; 189 iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); 190 } 191 192 static void iscsit_clear_tpg_np_login_threads( 193 struct iscsi_portal_group *tpg, 194 bool shutdown) 195 { 196 struct iscsi_tpg_np *tpg_np; 197 198 spin_lock(&tpg->tpg_np_lock); 199 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 200 if (!tpg_np->tpg_np) { 201 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); 202 continue; 203 } 204 spin_unlock(&tpg->tpg_np_lock); 205 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); 206 spin_lock(&tpg->tpg_np_lock); 207 } 208 spin_unlock(&tpg->tpg_np_lock); 209 } 210 211 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) 212 { 213 iscsi_print_params(tpg->param_list); 214 } 215 216 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) 217 { 218 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 219 220 a->authentication = TA_AUTHENTICATION; 221 a->login_timeout = TA_LOGIN_TIMEOUT; 222 a->netif_timeout = TA_NETIF_TIMEOUT; 223 a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; 224 a->generate_node_acls = TA_GENERATE_NODE_ACLS; 225 a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; 226 a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; 227 a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; 228 a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; 229 a->default_erl = TA_DEFAULT_ERL; 230 a->t10_pi = TA_DEFAULT_T10_PI; 231 a->fabric_prot_type = TA_DEFAULT_FABRIC_PROT_TYPE; 232 a->tpg_enabled_sendtargets = TA_DEFAULT_TPG_ENABLED_SENDTARGETS; 233 a->login_keys_workaround = TA_DEFAULT_LOGIN_KEYS_WORKAROUND; 234 } 235 236 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) 237 { 238 if (tpg->tpg_state != TPG_STATE_FREE) { 239 pr_err("Unable to add iSCSI Target Portal Group: %d" 240 " while not in TPG_STATE_FREE state.\n", tpg->tpgt); 241 return -EEXIST; 242 } 243 iscsit_set_default_tpg_attribs(tpg); 244 245 if (iscsi_create_default_params(&tpg->param_list) < 0) 246 goto err_out; 247 248 tpg->tpg_attrib.tpg = tpg; 249 250 spin_lock(&tpg->tpg_state_lock); 251 tpg->tpg_state = TPG_STATE_INACTIVE; 252 spin_unlock(&tpg->tpg_state_lock); 253 254 spin_lock(&tiqn->tiqn_tpg_lock); 255 list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); 256 tiqn->tiqn_ntpgs++; 257 pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", 258 tiqn->tiqn, tpg->tpgt); 259 spin_unlock(&tiqn->tiqn_tpg_lock); 260 261 return 0; 262 err_out: 263 if (tpg->param_list) { 264 iscsi_release_param_list(tpg->param_list); 265 tpg->param_list = NULL; 266 } 267 return -ENOMEM; 268 } 269 270 int iscsit_tpg_del_portal_group( 271 struct iscsi_tiqn *tiqn, 272 struct iscsi_portal_group *tpg, 273 int force) 274 { 275 u8 old_state = tpg->tpg_state; 276 277 spin_lock(&tpg->tpg_state_lock); 278 tpg->tpg_state = TPG_STATE_INACTIVE; 279 spin_unlock(&tpg->tpg_state_lock); 280 281 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 282 pr_err("Unable to delete iSCSI Target Portal Group:" 283 " %hu while active sessions exist, and force=0\n", 284 tpg->tpgt); 285 tpg->tpg_state = old_state; 286 return -EPERM; 287 } 288 289 if (tpg->param_list) { 290 iscsi_release_param_list(tpg->param_list); 291 tpg->param_list = NULL; 292 } 293 294 core_tpg_deregister(&tpg->tpg_se_tpg); 295 296 spin_lock(&tpg->tpg_state_lock); 297 tpg->tpg_state = TPG_STATE_FREE; 298 spin_unlock(&tpg->tpg_state_lock); 299 300 spin_lock(&tiqn->tiqn_tpg_lock); 301 tiqn->tiqn_ntpgs--; 302 list_del(&tpg->tpg_list); 303 spin_unlock(&tiqn->tiqn_tpg_lock); 304 305 pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", 306 tiqn->tiqn, tpg->tpgt); 307 308 kfree(tpg); 309 return 0; 310 } 311 312 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) 313 { 314 struct iscsi_param *param; 315 struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; 316 int ret; 317 318 if (tpg->tpg_state == TPG_STATE_ACTIVE) { 319 pr_err("iSCSI target portal group: %hu is already" 320 " active, ignoring request.\n", tpg->tpgt); 321 return -EINVAL; 322 } 323 /* 324 * Make sure that AuthMethod does not contain None as an option 325 * unless explictly disabled. Set the default to CHAP if authentication 326 * is enforced (as per default), and remove the NONE option. 327 */ 328 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 329 if (!param) 330 return -EINVAL; 331 332 if (tpg->tpg_attrib.authentication) { 333 if (!strcmp(param->value, NONE)) { 334 ret = iscsi_update_param_value(param, CHAP); 335 if (ret) 336 goto err; 337 } 338 339 ret = iscsit_ta_authentication(tpg, 1); 340 if (ret < 0) 341 goto err; 342 } 343 344 spin_lock(&tpg->tpg_state_lock); 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 return ret; 358 } 359 360 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) 361 { 362 struct iscsi_tiqn *tiqn; 363 u8 old_state = tpg->tpg_state; 364 365 spin_lock(&tpg->tpg_state_lock); 366 if (tpg->tpg_state == TPG_STATE_INACTIVE) { 367 pr_err("iSCSI Target Portal Group: %hu is already" 368 " inactive, ignoring request.\n", tpg->tpgt); 369 spin_unlock(&tpg->tpg_state_lock); 370 return -EINVAL; 371 } 372 tpg->tpg_state = TPG_STATE_INACTIVE; 373 spin_unlock(&tpg->tpg_state_lock); 374 375 iscsit_clear_tpg_np_login_threads(tpg, false); 376 377 if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { 378 spin_lock(&tpg->tpg_state_lock); 379 tpg->tpg_state = old_state; 380 spin_unlock(&tpg->tpg_state_lock); 381 pr_err("Unable to disable iSCSI Target Portal Group:" 382 " %hu while active sessions exist, and force=0\n", 383 tpg->tpgt); 384 return -EPERM; 385 } 386 387 tiqn = tpg->tpg_tiqn; 388 if (!tiqn || (tpg == iscsit_global->discovery_tpg)) 389 return 0; 390 391 spin_lock(&tiqn->tiqn_tpg_lock); 392 tiqn->tiqn_active_tpgs--; 393 pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", 394 tpg->tpgt); 395 spin_unlock(&tiqn->tiqn_tpg_lock); 396 397 return 0; 398 } 399 400 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( 401 struct iscsi_session *sess) 402 { 403 struct se_session *se_sess = sess->se_sess; 404 struct se_node_acl *se_nacl = se_sess->se_node_acl; 405 struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, 406 se_node_acl); 407 408 return &acl->node_attrib; 409 } 410 411 struct iscsi_tpg_np *iscsit_tpg_locate_child_np( 412 struct iscsi_tpg_np *tpg_np, 413 int network_transport) 414 { 415 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 416 417 spin_lock(&tpg_np->tpg_np_parent_lock); 418 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 419 &tpg_np->tpg_np_parent_list, tpg_np_child_list) { 420 if (tpg_np_child->tpg_np->np_network_transport == 421 network_transport) { 422 spin_unlock(&tpg_np->tpg_np_parent_lock); 423 return tpg_np_child; 424 } 425 } 426 spin_unlock(&tpg_np->tpg_np_parent_lock); 427 428 return NULL; 429 } 430 431 static bool iscsit_tpg_check_network_portal( 432 struct iscsi_tiqn *tiqn, 433 struct sockaddr_storage *sockaddr, 434 int network_transport) 435 { 436 struct iscsi_portal_group *tpg; 437 struct iscsi_tpg_np *tpg_np; 438 struct iscsi_np *np; 439 bool match = false; 440 441 spin_lock(&tiqn->tiqn_tpg_lock); 442 list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { 443 444 spin_lock(&tpg->tpg_np_lock); 445 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { 446 np = tpg_np->tpg_np; 447 448 match = iscsit_check_np_match(sockaddr, np, 449 network_transport); 450 if (match) 451 break; 452 } 453 spin_unlock(&tpg->tpg_np_lock); 454 } 455 spin_unlock(&tiqn->tiqn_tpg_lock); 456 457 return match; 458 } 459 460 struct iscsi_tpg_np *iscsit_tpg_add_network_portal( 461 struct iscsi_portal_group *tpg, 462 struct sockaddr_storage *sockaddr, 463 struct iscsi_tpg_np *tpg_np_parent, 464 int network_transport) 465 { 466 struct iscsi_np *np; 467 struct iscsi_tpg_np *tpg_np; 468 469 if (!tpg_np_parent) { 470 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, 471 network_transport)) { 472 pr_err("Network Portal: %pISc already exists on a" 473 " different TPG on %s\n", sockaddr, 474 tpg->tpg_tiqn->tiqn); 475 return ERR_PTR(-EEXIST); 476 } 477 } 478 479 tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); 480 if (!tpg_np) { 481 pr_err("Unable to allocate memory for" 482 " struct iscsi_tpg_np.\n"); 483 return ERR_PTR(-ENOMEM); 484 } 485 486 np = iscsit_add_np(sockaddr, network_transport); 487 if (IS_ERR(np)) { 488 kfree(tpg_np); 489 return ERR_CAST(np); 490 } 491 492 INIT_LIST_HEAD(&tpg_np->tpg_np_list); 493 INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); 494 INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); 495 spin_lock_init(&tpg_np->tpg_np_parent_lock); 496 init_completion(&tpg_np->tpg_np_comp); 497 kref_init(&tpg_np->tpg_np_kref); 498 tpg_np->tpg_np = np; 499 tpg_np->tpg = tpg; 500 501 spin_lock(&tpg->tpg_np_lock); 502 list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); 503 tpg->num_tpg_nps++; 504 if (tpg->tpg_tiqn) 505 tpg->tpg_tiqn->tiqn_num_tpg_nps++; 506 spin_unlock(&tpg->tpg_np_lock); 507 508 if (tpg_np_parent) { 509 tpg_np->tpg_np_parent = tpg_np_parent; 510 spin_lock(&tpg_np_parent->tpg_np_parent_lock); 511 list_add_tail(&tpg_np->tpg_np_child_list, 512 &tpg_np_parent->tpg_np_parent_list); 513 spin_unlock(&tpg_np_parent->tpg_np_parent_lock); 514 } 515 516 pr_debug("CORE[%s] - Added Network Portal: %pISpc,%hu on %s\n", 517 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 518 np->np_transport->name); 519 520 return tpg_np; 521 } 522 523 static int iscsit_tpg_release_np( 524 struct iscsi_tpg_np *tpg_np, 525 struct iscsi_portal_group *tpg, 526 struct iscsi_np *np) 527 { 528 iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); 529 530 pr_debug("CORE[%s] - Removed Network Portal: %pISpc,%hu on %s\n", 531 tpg->tpg_tiqn->tiqn, &np->np_sockaddr, tpg->tpgt, 532 np->np_transport->name); 533 534 tpg_np->tpg_np = NULL; 535 tpg_np->tpg = NULL; 536 kfree(tpg_np); 537 /* 538 * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. 539 */ 540 return iscsit_del_np(np); 541 } 542 543 int iscsit_tpg_del_network_portal( 544 struct iscsi_portal_group *tpg, 545 struct iscsi_tpg_np *tpg_np) 546 { 547 struct iscsi_np *np; 548 struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; 549 int ret = 0; 550 551 np = tpg_np->tpg_np; 552 if (!np) { 553 pr_err("Unable to locate struct iscsi_np from" 554 " struct iscsi_tpg_np\n"); 555 return -EINVAL; 556 } 557 558 if (!tpg_np->tpg_np_parent) { 559 /* 560 * We are the parent tpg network portal. Release all of the 561 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent 562 * list first. 563 */ 564 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, 565 &tpg_np->tpg_np_parent_list, 566 tpg_np_child_list) { 567 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); 568 if (ret < 0) 569 pr_err("iscsit_tpg_del_network_portal()" 570 " failed: %d\n", ret); 571 } 572 } else { 573 /* 574 * We are not the parent ISCSI_TCP tpg network portal. Release 575 * our own network portals from the child list. 576 */ 577 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 578 list_del(&tpg_np->tpg_np_child_list); 579 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); 580 } 581 582 spin_lock(&tpg->tpg_np_lock); 583 list_del(&tpg_np->tpg_np_list); 584 tpg->num_tpg_nps--; 585 if (tpg->tpg_tiqn) 586 tpg->tpg_tiqn->tiqn_num_tpg_nps--; 587 spin_unlock(&tpg->tpg_np_lock); 588 589 return iscsit_tpg_release_np(tpg_np, tpg, np); 590 } 591 592 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) 593 { 594 unsigned char buf1[256], buf2[256], *none = NULL; 595 int len; 596 struct iscsi_param *param; 597 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 598 599 if ((authentication != 1) && (authentication != 0)) { 600 pr_err("Illegal value for authentication parameter:" 601 " %u, ignoring request.\n", authentication); 602 return -EINVAL; 603 } 604 605 memset(buf1, 0, sizeof(buf1)); 606 memset(buf2, 0, sizeof(buf2)); 607 608 param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); 609 if (!param) 610 return -EINVAL; 611 612 if (authentication) { 613 snprintf(buf1, sizeof(buf1), "%s", param->value); 614 none = strstr(buf1, NONE); 615 if (!none) 616 goto out; 617 if (!strncmp(none + 4, ",", 1)) { 618 if (!strcmp(buf1, none)) 619 sprintf(buf2, "%s", none+5); 620 else { 621 none--; 622 *none = '\0'; 623 len = sprintf(buf2, "%s", buf1); 624 none += 5; 625 sprintf(buf2 + len, "%s", none); 626 } 627 } else { 628 none--; 629 *none = '\0'; 630 sprintf(buf2, "%s", buf1); 631 } 632 if (iscsi_update_param_value(param, buf2) < 0) 633 return -EINVAL; 634 } else { 635 snprintf(buf1, sizeof(buf1), "%s", param->value); 636 none = strstr(buf1, NONE); 637 if (none) 638 goto out; 639 strncat(buf1, ",", strlen(",")); 640 strncat(buf1, NONE, strlen(NONE)); 641 if (iscsi_update_param_value(param, buf1) < 0) 642 return -EINVAL; 643 } 644 645 out: 646 a->authentication = authentication; 647 pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", 648 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); 649 650 return 0; 651 } 652 653 int iscsit_ta_login_timeout( 654 struct iscsi_portal_group *tpg, 655 u32 login_timeout) 656 { 657 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 658 659 if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { 660 pr_err("Requested Login Timeout %u larger than maximum" 661 " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); 662 return -EINVAL; 663 } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { 664 pr_err("Requested Logout Timeout %u smaller than" 665 " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); 666 return -EINVAL; 667 } 668 669 a->login_timeout = login_timeout; 670 pr_debug("Set Logout Timeout to %u for Target Portal Group" 671 " %hu\n", a->login_timeout, tpg->tpgt); 672 673 return 0; 674 } 675 676 int iscsit_ta_netif_timeout( 677 struct iscsi_portal_group *tpg, 678 u32 netif_timeout) 679 { 680 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 681 682 if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { 683 pr_err("Requested Network Interface Timeout %u larger" 684 " than maximum %u\n", netif_timeout, 685 TA_NETIF_TIMEOUT_MAX); 686 return -EINVAL; 687 } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { 688 pr_err("Requested Network Interface Timeout %u smaller" 689 " than minimum %u\n", netif_timeout, 690 TA_NETIF_TIMEOUT_MIN); 691 return -EINVAL; 692 } 693 694 a->netif_timeout = netif_timeout; 695 pr_debug("Set Network Interface Timeout to %u for" 696 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); 697 698 return 0; 699 } 700 701 int iscsit_ta_generate_node_acls( 702 struct iscsi_portal_group *tpg, 703 u32 flag) 704 { 705 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 706 707 if ((flag != 0) && (flag != 1)) { 708 pr_err("Illegal value %d\n", flag); 709 return -EINVAL; 710 } 711 712 a->generate_node_acls = flag; 713 pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", 714 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); 715 716 if (flag == 1 && a->cache_dynamic_acls == 0) { 717 pr_debug("Explicitly setting cache_dynamic_acls=1 when " 718 "generate_node_acls=1\n"); 719 a->cache_dynamic_acls = 1; 720 } 721 722 return 0; 723 } 724 725 int iscsit_ta_default_cmdsn_depth( 726 struct iscsi_portal_group *tpg, 727 u32 tcq_depth) 728 { 729 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 730 731 if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { 732 pr_err("Requested Default Queue Depth: %u larger" 733 " than maximum %u\n", tcq_depth, 734 TA_DEFAULT_CMDSN_DEPTH_MAX); 735 return -EINVAL; 736 } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { 737 pr_err("Requested Default Queue Depth: %u smaller" 738 " than minimum %u\n", tcq_depth, 739 TA_DEFAULT_CMDSN_DEPTH_MIN); 740 return -EINVAL; 741 } 742 743 a->default_cmdsn_depth = tcq_depth; 744 pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", 745 tpg->tpgt, a->default_cmdsn_depth); 746 747 return 0; 748 } 749 750 int iscsit_ta_cache_dynamic_acls( 751 struct iscsi_portal_group *tpg, 752 u32 flag) 753 { 754 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 755 756 if ((flag != 0) && (flag != 1)) { 757 pr_err("Illegal value %d\n", flag); 758 return -EINVAL; 759 } 760 761 if (a->generate_node_acls == 1 && flag == 0) { 762 pr_debug("Skipping cache_dynamic_acls=0 when" 763 " generate_node_acls=1\n"); 764 return 0; 765 } 766 767 a->cache_dynamic_acls = flag; 768 pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" 769 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? 770 "Enabled" : "Disabled"); 771 772 return 0; 773 } 774 775 int iscsit_ta_demo_mode_write_protect( 776 struct iscsi_portal_group *tpg, 777 u32 flag) 778 { 779 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 780 781 if ((flag != 0) && (flag != 1)) { 782 pr_err("Illegal value %d\n", flag); 783 return -EINVAL; 784 } 785 786 a->demo_mode_write_protect = flag; 787 pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", 788 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); 789 790 return 0; 791 } 792 793 int iscsit_ta_prod_mode_write_protect( 794 struct iscsi_portal_group *tpg, 795 u32 flag) 796 { 797 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 798 799 if ((flag != 0) && (flag != 1)) { 800 pr_err("Illegal value %d\n", flag); 801 return -EINVAL; 802 } 803 804 a->prod_mode_write_protect = flag; 805 pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" 806 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? 807 "ON" : "OFF"); 808 809 return 0; 810 } 811 812 int iscsit_ta_demo_mode_discovery( 813 struct iscsi_portal_group *tpg, 814 u32 flag) 815 { 816 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 817 818 if ((flag != 0) && (flag != 1)) { 819 pr_err("Illegal value %d\n", flag); 820 return -EINVAL; 821 } 822 823 a->demo_mode_discovery = flag; 824 pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" 825 " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? 826 "ON" : "OFF"); 827 828 return 0; 829 } 830 831 int iscsit_ta_default_erl( 832 struct iscsi_portal_group *tpg, 833 u32 default_erl) 834 { 835 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 836 837 if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { 838 pr_err("Illegal value for default_erl: %u\n", default_erl); 839 return -EINVAL; 840 } 841 842 a->default_erl = default_erl; 843 pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); 844 845 return 0; 846 } 847 848 int iscsit_ta_t10_pi( 849 struct iscsi_portal_group *tpg, 850 u32 flag) 851 { 852 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 853 854 if ((flag != 0) && (flag != 1)) { 855 pr_err("Illegal value %d\n", flag); 856 return -EINVAL; 857 } 858 859 a->t10_pi = flag; 860 pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" 861 " %s\n", tpg->tpgt, (a->t10_pi) ? 862 "ON" : "OFF"); 863 864 return 0; 865 } 866 867 int iscsit_ta_fabric_prot_type( 868 struct iscsi_portal_group *tpg, 869 u32 prot_type) 870 { 871 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 872 873 if ((prot_type != 0) && (prot_type != 1) && (prot_type != 3)) { 874 pr_err("Illegal value for fabric_prot_type: %u\n", prot_type); 875 return -EINVAL; 876 } 877 878 a->fabric_prot_type = prot_type; 879 pr_debug("iSCSI_TPG[%hu] - T10 Fabric Protection Type: %u\n", 880 tpg->tpgt, prot_type); 881 882 return 0; 883 } 884 885 int iscsit_ta_tpg_enabled_sendtargets( 886 struct iscsi_portal_group *tpg, 887 u32 flag) 888 { 889 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 890 891 if ((flag != 0) && (flag != 1)) { 892 pr_err("Illegal value %d\n", flag); 893 return -EINVAL; 894 } 895 896 a->tpg_enabled_sendtargets = flag; 897 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit required for SendTargets:" 898 " %s\n", tpg->tpgt, (a->tpg_enabled_sendtargets) ? "ON" : "OFF"); 899 900 return 0; 901 } 902 903 int iscsit_ta_login_keys_workaround( 904 struct iscsi_portal_group *tpg, 905 u32 flag) 906 { 907 struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; 908 909 if ((flag != 0) && (flag != 1)) { 910 pr_err("Illegal value %d\n", flag); 911 return -EINVAL; 912 } 913 914 a->login_keys_workaround = flag; 915 pr_debug("iSCSI_TPG[%hu] - TPG enabled bit for login keys workaround: %s ", 916 tpg->tpgt, (a->login_keys_workaround) ? "ON" : "OFF"); 917 918 return 0; 919 } 920