/******************************************************************************* * This file contains iSCSI Target Portal Group related functions. * * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. ******************************************************************************/ #include <target/target_core_base.h> #include <target/target_core_fabric.h> #include <target/target_core_configfs.h> #include "iscsi_target_core.h" #include "iscsi_target_erl0.h" #include "iscsi_target_login.h" #include "iscsi_target_nodeattrib.h" #include "iscsi_target_tpg.h" #include "iscsi_target_util.h" #include "iscsi_target.h" #include "iscsi_target_parameters.h" #include <target/iscsi/iscsi_transport.h> struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt) { struct iscsi_portal_group *tpg; tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL); if (!tpg) { pr_err("Unable to allocate struct iscsi_portal_group\n"); return NULL; } tpg->tpgt = tpgt; tpg->tpg_state = TPG_STATE_FREE; tpg->tpg_tiqn = tiqn; INIT_LIST_HEAD(&tpg->tpg_gnp_list); INIT_LIST_HEAD(&tpg->tpg_list); mutex_init(&tpg->tpg_access_lock); sema_init(&tpg->np_login_sem, 1); spin_lock_init(&tpg->tpg_state_lock); spin_lock_init(&tpg->tpg_np_lock); return tpg; } static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *); int iscsit_load_discovery_tpg(void) { struct iscsi_param *param; struct iscsi_portal_group *tpg; int ret; tpg = iscsit_alloc_portal_group(NULL, 1); if (!tpg) { pr_err("Unable to allocate struct iscsi_portal_group\n"); return -1; } ret = core_tpg_register( &lio_target_fabric_configfs->tf_ops, NULL, &tpg->tpg_se_tpg, tpg, TRANSPORT_TPG_TYPE_DISCOVERY); if (ret < 0) { kfree(tpg); return -1; } tpg->sid = 1; /* First Assigned LIO Session ID */ iscsit_set_default_tpg_attribs(tpg); if (iscsi_create_default_params(&tpg->param_list) < 0) goto out; /* * By default we disable authentication for discovery sessions, * this can be changed with: * * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth */ param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); if (!param) goto out; if (iscsi_update_param_value(param, "CHAP,None") < 0) goto out; tpg->tpg_attrib.authentication = 0; spin_lock(&tpg->tpg_state_lock); tpg->tpg_state = TPG_STATE_ACTIVE; spin_unlock(&tpg->tpg_state_lock); iscsit_global->discovery_tpg = tpg; pr_debug("CORE[0] - Allocated Discovery TPG\n"); return 0; out: if (tpg->sid == 1) core_tpg_deregister(&tpg->tpg_se_tpg); kfree(tpg); return -1; } void iscsit_release_discovery_tpg(void) { struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg; if (!tpg) return; core_tpg_deregister(&tpg->tpg_se_tpg); kfree(tpg); iscsit_global->discovery_tpg = NULL; } struct iscsi_portal_group *iscsit_get_tpg_from_np( struct iscsi_tiqn *tiqn, struct iscsi_np *np, struct iscsi_tpg_np **tpg_np_out) { struct iscsi_portal_group *tpg = NULL; struct iscsi_tpg_np *tpg_np; spin_lock(&tiqn->tiqn_tpg_lock); list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { spin_lock(&tpg->tpg_state_lock); if (tpg->tpg_state != TPG_STATE_ACTIVE) { spin_unlock(&tpg->tpg_state_lock); continue; } spin_unlock(&tpg->tpg_state_lock); spin_lock(&tpg->tpg_np_lock); list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { if (tpg_np->tpg_np == np) { *tpg_np_out = tpg_np; kref_get(&tpg_np->tpg_np_kref); spin_unlock(&tpg->tpg_np_lock); spin_unlock(&tiqn->tiqn_tpg_lock); return tpg; } } spin_unlock(&tpg->tpg_np_lock); } spin_unlock(&tiqn->tiqn_tpg_lock); return NULL; } int iscsit_get_tpg( struct iscsi_portal_group *tpg) { int ret; ret = mutex_lock_interruptible(&tpg->tpg_access_lock); return ((ret != 0) || signal_pending(current)) ? -1 : 0; } void iscsit_put_tpg(struct iscsi_portal_group *tpg) { mutex_unlock(&tpg->tpg_access_lock); } static void iscsit_clear_tpg_np_login_thread( struct iscsi_tpg_np *tpg_np, struct iscsi_portal_group *tpg, bool shutdown) { if (!tpg_np->tpg_np) { pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); return; } tpg_np->tpg_np->enabled = false; iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown); } void iscsit_clear_tpg_np_login_threads( struct iscsi_portal_group *tpg, bool shutdown) { struct iscsi_tpg_np *tpg_np; spin_lock(&tpg->tpg_np_lock); list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { if (!tpg_np->tpg_np) { pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n"); continue; } spin_unlock(&tpg->tpg_np_lock); iscsit_clear_tpg_np_login_thread(tpg_np, tpg, shutdown); spin_lock(&tpg->tpg_np_lock); } spin_unlock(&tpg->tpg_np_lock); } void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg) { iscsi_print_params(tpg->param_list); } static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; a->authentication = TA_AUTHENTICATION; a->login_timeout = TA_LOGIN_TIMEOUT; a->netif_timeout = TA_NETIF_TIMEOUT; a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH; a->generate_node_acls = TA_GENERATE_NODE_ACLS; a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS; a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT; a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT; a->demo_mode_discovery = TA_DEMO_MODE_DISCOVERY; a->default_erl = TA_DEFAULT_ERL; a->t10_pi = TA_DEFAULT_T10_PI; } int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg) { if (tpg->tpg_state != TPG_STATE_FREE) { pr_err("Unable to add iSCSI Target Portal Group: %d" " while not in TPG_STATE_FREE state.\n", tpg->tpgt); return -EEXIST; } iscsit_set_default_tpg_attribs(tpg); if (iscsi_create_default_params(&tpg->param_list) < 0) goto err_out; tpg->tpg_attrib.tpg = tpg; spin_lock(&tpg->tpg_state_lock); tpg->tpg_state = TPG_STATE_INACTIVE; spin_unlock(&tpg->tpg_state_lock); spin_lock(&tiqn->tiqn_tpg_lock); list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list); tiqn->tiqn_ntpgs++; pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n", tiqn->tiqn, tpg->tpgt); spin_unlock(&tiqn->tiqn_tpg_lock); return 0; err_out: if (tpg->param_list) { iscsi_release_param_list(tpg->param_list); tpg->param_list = NULL; } kfree(tpg); return -ENOMEM; } int iscsit_tpg_del_portal_group( struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg, int force) { u8 old_state = tpg->tpg_state; spin_lock(&tpg->tpg_state_lock); tpg->tpg_state = TPG_STATE_INACTIVE; spin_unlock(&tpg->tpg_state_lock); iscsit_clear_tpg_np_login_threads(tpg, true); if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { pr_err("Unable to delete iSCSI Target Portal Group:" " %hu while active sessions exist, and force=0\n", tpg->tpgt); tpg->tpg_state = old_state; return -EPERM; } core_tpg_clear_object_luns(&tpg->tpg_se_tpg); if (tpg->param_list) { iscsi_release_param_list(tpg->param_list); tpg->param_list = NULL; } core_tpg_deregister(&tpg->tpg_se_tpg); spin_lock(&tpg->tpg_state_lock); tpg->tpg_state = TPG_STATE_FREE; spin_unlock(&tpg->tpg_state_lock); spin_lock(&tiqn->tiqn_tpg_lock); tiqn->tiqn_ntpgs--; list_del(&tpg->tpg_list); spin_unlock(&tiqn->tiqn_tpg_lock); pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n", tiqn->tiqn, tpg->tpgt); kfree(tpg); return 0; } int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg) { struct iscsi_param *param; struct iscsi_tiqn *tiqn = tpg->tpg_tiqn; int ret; spin_lock(&tpg->tpg_state_lock); if (tpg->tpg_state == TPG_STATE_ACTIVE) { pr_err("iSCSI target portal group: %hu is already" " active, ignoring request.\n", tpg->tpgt); spin_unlock(&tpg->tpg_state_lock); return -EINVAL; } /* * Make sure that AuthMethod does not contain None as an option * unless explictly disabled. Set the default to CHAP if authentication * is enforced (as per default), and remove the NONE option. */ param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); if (!param) { spin_unlock(&tpg->tpg_state_lock); return -EINVAL; } if (tpg->tpg_attrib.authentication) { if (!strcmp(param->value, NONE)) { ret = iscsi_update_param_value(param, CHAP); if (ret) goto err; } ret = iscsit_ta_authentication(tpg, 1); if (ret < 0) goto err; } tpg->tpg_state = TPG_STATE_ACTIVE; spin_unlock(&tpg->tpg_state_lock); spin_lock(&tiqn->tiqn_tpg_lock); tiqn->tiqn_active_tpgs++; pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n", tpg->tpgt); spin_unlock(&tiqn->tiqn_tpg_lock); return 0; err: spin_unlock(&tpg->tpg_state_lock); return ret; } int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force) { struct iscsi_tiqn *tiqn; u8 old_state = tpg->tpg_state; spin_lock(&tpg->tpg_state_lock); if (tpg->tpg_state == TPG_STATE_INACTIVE) { pr_err("iSCSI Target Portal Group: %hu is already" " inactive, ignoring request.\n", tpg->tpgt); spin_unlock(&tpg->tpg_state_lock); return -EINVAL; } tpg->tpg_state = TPG_STATE_INACTIVE; spin_unlock(&tpg->tpg_state_lock); iscsit_clear_tpg_np_login_threads(tpg, false); if (iscsit_release_sessions_for_tpg(tpg, force) < 0) { spin_lock(&tpg->tpg_state_lock); tpg->tpg_state = old_state; spin_unlock(&tpg->tpg_state_lock); pr_err("Unable to disable iSCSI Target Portal Group:" " %hu while active sessions exist, and force=0\n", tpg->tpgt); return -EPERM; } tiqn = tpg->tpg_tiqn; if (!tiqn || (tpg == iscsit_global->discovery_tpg)) return 0; spin_lock(&tiqn->tiqn_tpg_lock); tiqn->tiqn_active_tpgs--; pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n", tpg->tpgt); spin_unlock(&tiqn->tiqn_tpg_lock); return 0; } struct iscsi_node_attrib *iscsit_tpg_get_node_attrib( struct iscsi_session *sess) { struct se_session *se_sess = sess->se_sess; struct se_node_acl *se_nacl = se_sess->se_node_acl; struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl); return &acl->node_attrib; } struct iscsi_tpg_np *iscsit_tpg_locate_child_np( struct iscsi_tpg_np *tpg_np, int network_transport) { struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; spin_lock(&tpg_np->tpg_np_parent_lock); list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, &tpg_np->tpg_np_parent_list, tpg_np_child_list) { if (tpg_np_child->tpg_np->np_network_transport == network_transport) { spin_unlock(&tpg_np->tpg_np_parent_lock); return tpg_np_child; } } spin_unlock(&tpg_np->tpg_np_parent_lock); return NULL; } static bool iscsit_tpg_check_network_portal( struct iscsi_tiqn *tiqn, struct __kernel_sockaddr_storage *sockaddr, int network_transport) { struct iscsi_portal_group *tpg; struct iscsi_tpg_np *tpg_np; struct iscsi_np *np; bool match = false; spin_lock(&tiqn->tiqn_tpg_lock); list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) { spin_lock(&tpg->tpg_np_lock); list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) { np = tpg_np->tpg_np; match = iscsit_check_np_match(sockaddr, np, network_transport); if (match == true) break; } spin_unlock(&tpg->tpg_np_lock); } spin_unlock(&tiqn->tiqn_tpg_lock); return match; } struct iscsi_tpg_np *iscsit_tpg_add_network_portal( struct iscsi_portal_group *tpg, struct __kernel_sockaddr_storage *sockaddr, char *ip_str, struct iscsi_tpg_np *tpg_np_parent, int network_transport) { struct iscsi_np *np; struct iscsi_tpg_np *tpg_np; if (!tpg_np_parent) { if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr, network_transport) == true) { pr_err("Network Portal: %s already exists on a" " different TPG on %s\n", ip_str, tpg->tpg_tiqn->tiqn); return ERR_PTR(-EEXIST); } } tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL); if (!tpg_np) { pr_err("Unable to allocate memory for" " struct iscsi_tpg_np.\n"); return ERR_PTR(-ENOMEM); } np = iscsit_add_np(sockaddr, ip_str, network_transport); if (IS_ERR(np)) { kfree(tpg_np); return ERR_CAST(np); } INIT_LIST_HEAD(&tpg_np->tpg_np_list); INIT_LIST_HEAD(&tpg_np->tpg_np_child_list); INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list); spin_lock_init(&tpg_np->tpg_np_parent_lock); init_completion(&tpg_np->tpg_np_comp); kref_init(&tpg_np->tpg_np_kref); tpg_np->tpg_np = np; np->tpg_np = tpg_np; tpg_np->tpg = tpg; spin_lock(&tpg->tpg_np_lock); list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list); tpg->num_tpg_nps++; if (tpg->tpg_tiqn) tpg->tpg_tiqn->tiqn_num_tpg_nps++; spin_unlock(&tpg->tpg_np_lock); if (tpg_np_parent) { tpg_np->tpg_np_parent = tpg_np_parent; spin_lock(&tpg_np_parent->tpg_np_parent_lock); list_add_tail(&tpg_np->tpg_np_child_list, &tpg_np_parent->tpg_np_parent_list); spin_unlock(&tpg_np_parent->tpg_np_parent_lock); } pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n", tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, np->np_transport->name); return tpg_np; } static int iscsit_tpg_release_np( struct iscsi_tpg_np *tpg_np, struct iscsi_portal_group *tpg, struct iscsi_np *np) { iscsit_clear_tpg_np_login_thread(tpg_np, tpg, true); pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n", tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt, np->np_transport->name); tpg_np->tpg_np = NULL; tpg_np->tpg = NULL; kfree(tpg_np); /* * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released. */ return iscsit_del_np(np); } int iscsit_tpg_del_network_portal( struct iscsi_portal_group *tpg, struct iscsi_tpg_np *tpg_np) { struct iscsi_np *np; struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp; int ret = 0; np = tpg_np->tpg_np; if (!np) { pr_err("Unable to locate struct iscsi_np from" " struct iscsi_tpg_np\n"); return -EINVAL; } if (!tpg_np->tpg_np_parent) { /* * We are the parent tpg network portal. Release all of the * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent * list first. */ list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp, &tpg_np->tpg_np_parent_list, tpg_np_child_list) { ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child); if (ret < 0) pr_err("iscsit_tpg_del_network_portal()" " failed: %d\n", ret); } } else { /* * We are not the parent ISCSI_TCP tpg network portal. Release * our own network portals from the child list. */ spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); list_del(&tpg_np->tpg_np_child_list); spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock); } spin_lock(&tpg->tpg_np_lock); list_del(&tpg_np->tpg_np_list); tpg->num_tpg_nps--; if (tpg->tpg_tiqn) tpg->tpg_tiqn->tiqn_num_tpg_nps--; spin_unlock(&tpg->tpg_np_lock); return iscsit_tpg_release_np(tpg_np, tpg, np); } int iscsit_tpg_set_initiator_node_queue_depth( struct iscsi_portal_group *tpg, unsigned char *initiatorname, u32 queue_depth, int force) { return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg, initiatorname, queue_depth, force); } int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication) { unsigned char buf1[256], buf2[256], *none = NULL; int len; struct iscsi_param *param; struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((authentication != 1) && (authentication != 0)) { pr_err("Illegal value for authentication parameter:" " %u, ignoring request.\n", authentication); return -EINVAL; } memset(buf1, 0, sizeof(buf1)); memset(buf2, 0, sizeof(buf2)); param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list); if (!param) return -EINVAL; if (authentication) { snprintf(buf1, sizeof(buf1), "%s", param->value); none = strstr(buf1, NONE); if (!none) goto out; if (!strncmp(none + 4, ",", 1)) { if (!strcmp(buf1, none)) sprintf(buf2, "%s", none+5); else { none--; *none = '\0'; len = sprintf(buf2, "%s", buf1); none += 5; sprintf(buf2 + len, "%s", none); } } else { none--; *none = '\0'; sprintf(buf2, "%s", buf1); } if (iscsi_update_param_value(param, buf2) < 0) return -EINVAL; } else { snprintf(buf1, sizeof(buf1), "%s", param->value); none = strstr(buf1, NONE); if (none) goto out; strncat(buf1, ",", strlen(",")); strncat(buf1, NONE, strlen(NONE)); if (iscsi_update_param_value(param, buf1) < 0) return -EINVAL; } out: a->authentication = authentication; pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n", a->authentication ? "Enforcing" : "Disabling", tpg->tpgt); return 0; } int iscsit_ta_login_timeout( struct iscsi_portal_group *tpg, u32 login_timeout) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if (login_timeout > TA_LOGIN_TIMEOUT_MAX) { pr_err("Requested Login Timeout %u larger than maximum" " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX); return -EINVAL; } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) { pr_err("Requested Logout Timeout %u smaller than" " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN); return -EINVAL; } a->login_timeout = login_timeout; pr_debug("Set Logout Timeout to %u for Target Portal Group" " %hu\n", a->login_timeout, tpg->tpgt); return 0; } int iscsit_ta_netif_timeout( struct iscsi_portal_group *tpg, u32 netif_timeout) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if (netif_timeout > TA_NETIF_TIMEOUT_MAX) { pr_err("Requested Network Interface Timeout %u larger" " than maximum %u\n", netif_timeout, TA_NETIF_TIMEOUT_MAX); return -EINVAL; } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) { pr_err("Requested Network Interface Timeout %u smaller" " than minimum %u\n", netif_timeout, TA_NETIF_TIMEOUT_MIN); return -EINVAL; } a->netif_timeout = netif_timeout; pr_debug("Set Network Interface Timeout to %u for" " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt); return 0; } int iscsit_ta_generate_node_acls( struct iscsi_portal_group *tpg, u32 flag) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } a->generate_node_acls = flag; pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n", tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled"); if (flag == 1 && a->cache_dynamic_acls == 0) { pr_debug("Explicitly setting cache_dynamic_acls=1 when " "generate_node_acls=1\n"); a->cache_dynamic_acls = 1; } return 0; } int iscsit_ta_default_cmdsn_depth( struct iscsi_portal_group *tpg, u32 tcq_depth) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) { pr_err("Requested Default Queue Depth: %u larger" " than maximum %u\n", tcq_depth, TA_DEFAULT_CMDSN_DEPTH_MAX); return -EINVAL; } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) { pr_err("Requested Default Queue Depth: %u smaller" " than minimum %u\n", tcq_depth, TA_DEFAULT_CMDSN_DEPTH_MIN); return -EINVAL; } a->default_cmdsn_depth = tcq_depth; pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n", tpg->tpgt, a->default_cmdsn_depth); return 0; } int iscsit_ta_cache_dynamic_acls( struct iscsi_portal_group *tpg, u32 flag) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } if (a->generate_node_acls == 1 && flag == 0) { pr_debug("Skipping cache_dynamic_acls=0 when" " generate_node_acls=1\n"); return 0; } a->cache_dynamic_acls = flag; pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group" " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ? "Enabled" : "Disabled"); return 0; } int iscsit_ta_demo_mode_write_protect( struct iscsi_portal_group *tpg, u32 flag) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } a->demo_mode_write_protect = flag; pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n", tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF"); return 0; } int iscsit_ta_prod_mode_write_protect( struct iscsi_portal_group *tpg, u32 flag) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } a->prod_mode_write_protect = flag; pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:" " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ? "ON" : "OFF"); return 0; } int iscsit_ta_demo_mode_discovery( struct iscsi_portal_group *tpg, u32 flag) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } a->demo_mode_discovery = flag; pr_debug("iSCSI_TPG[%hu] - Demo Mode Discovery bit:" " %s\n", tpg->tpgt, (a->demo_mode_discovery) ? "ON" : "OFF"); return 0; } int iscsit_ta_default_erl( struct iscsi_portal_group *tpg, u32 default_erl) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((default_erl != 0) && (default_erl != 1) && (default_erl != 2)) { pr_err("Illegal value for default_erl: %u\n", default_erl); return -EINVAL; } a->default_erl = default_erl; pr_debug("iSCSI_TPG[%hu] - DefaultERL: %u\n", tpg->tpgt, a->default_erl); return 0; } int iscsit_ta_t10_pi( struct iscsi_portal_group *tpg, u32 flag) { struct iscsi_tpg_attrib *a = &tpg->tpg_attrib; if ((flag != 0) && (flag != 1)) { pr_err("Illegal value %d\n", flag); return -EINVAL; } a->t10_pi = flag; pr_debug("iSCSI_TPG[%hu] - T10 Protection information bit:" " %s\n", tpg->tpgt, (a->t10_pi) ? "ON" : "OFF"); return 0; }