887 lines · c
1// SPDX-License-Identifier: GPL-2.0-or-later2/*******************************************************************************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 that63 * 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_auth82 */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 option316 * unless explictly disabled. Set the default to CHAP if authentication317 * 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 the554 * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent555 * 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. Release568 * 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